1301
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Galenkamp H, Stronks K, Mokkink LB, Derks EM. Measurement invariance of the SF-12 among different demographic groups: The HELIUS study. PLoS One 2018; 13:e0203483. [PMID: 30212480 PMCID: PMC6136718 DOI: 10.1371/journal.pone.0203483] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 08/21/2018] [Indexed: 01/09/2023] Open
Abstract
AIM To investigate whether items of the SF-12, widely used to assess health outcome in clinical practice and public health research, provide unbiased measurements of underlying constructs in different demographic groups regarding gender, age, educational level and ethnicity. METHODS We included 23,146 men and women aged 18-70 of Dutch, South-Asian Surinamese, African Surinamese, Ghanaian, Turkish, or Moroccan origin from the HELIUS study. Both multiple group confirmatory factor analyses (MGCFA), with increasingly stringent model constraints (i.e. assessing Configural, Metric, Strong and Strict measurement invariance (MI)), and regression analysis were conducted to establish comparability of SF-12 items across demographic groups. RESULTS MI regarding gender, age and education was tested in the ethnic Dutch group (N = 4,615). In each subsequent step of testing MI, change in goodness-of-fit measures did not exceed 0.010 (RMSEA) or 0.004 (CFI). Moreover, goodness-of-fit indices showed good fit for strict invariance models: RMSEA<0.055; CFI>0.97. Regarding ethnicity, RMSEA values of metric and subsequent models fell above 0.055, indicating violation of measurement invariance in factor loadings, thresholds and residual variances. Regression analysis revealed possible age-, education- and ethnicity-related DIF. Adjustment for this DIF had little impact on the magnitude of age and educational differences in physical and mental health, but ethnic inequalities in physical health-and to a lesser extent mental health-were reduced after DIF adjustment. CONCLUSIONS We found no evidence of violation of measurement invariance of the SF-12 regarding gender, age and educational level. If minor DIF would remain undetected in our MGCFA analyses, we showed that this would have negligible effect on the magnitude of demographic health inequalities. Regarding ethnicity, the SF-12 was not measurement invariant. After accounting for DIF, we observed a reduction of ethnic inequalities in health, in particular in physical health. Caution is warranted when comparing SF-12 scores across population groups with various ethnic backgrounds.
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Affiliation(s)
- Henrike Galenkamp
- Department of Public Health, Amsterdam Public Health Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- * E-mail:
| | - Karien Stronks
- Department of Public Health, Amsterdam Public Health Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Lidwine B. Mokkink
- Department of Epidemiology and Biostatistics, Amsterdam Public Health Research Institute, Amsterdam UMC, VU University, Amsterdam, The Netherlands
| | - Eske M. Derks
- Department of Psychiatry, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Translational Neurogenomics Group, QIMR Berghofer, Brisbane, Australia
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1302
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Silva-Alvim FAL, An J, Alvim JC, Foresti O, Grippa A, Pelgrom A, Adams TL, Hawes C, Denecke J. Predominant Golgi Residency of the Plant K/HDEL Receptor Is Essential for Its Function in Mediating ER Retention. Plant Cell 2018; 30:2174-2196. [PMID: 30072420 PMCID: PMC6181015 DOI: 10.1105/tpc.18.00426] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 07/02/2018] [Accepted: 07/26/2018] [Indexed: 05/08/2023]
Abstract
Accumulation of soluble proteins in the endoplasmic reticulum (ER) of plants is mediated by a receptor termed ER RETENTION DEFECTIVE2 (ERD2) or K/HDEL receptor. Using two gain-of-function assays and by complementing loss of function in Nicotiana benthamiana, we discovered that compromising the lumenal N terminus or the cytosolic C terminus with fluorescent fusions abolishes its biological function and profoundly affects its subcellular localization. Based on the confirmed asymmetrical topology of ERD2, we engineered a new fluorescent ERD2 fusion protein that retains biological activity. Using this fusion, we show that ERD2 is exclusively detected at the Golgi apparatus, unlike nonfunctional C-terminal fusions, which also label the ER. Moreover, ERD2 is confined to early Golgi compartments and does not show ligand-induced redistribution to the ER. We show that the cytosolic C terminus of ERD2 plays a crucial role in its function. Two conserved leucine residues that do not correspond to any known targeting motifs for ER-Golgi trafficking were shown to be essential for both ERD2 Golgi residency and its ability to mediate ER retention of soluble ligands. The results suggest that anterograde ER to Golgi transport of ERD2 is either extremely fast, well in excess of the bulk flow rate, or that ERD2 does not recycle in the way originally proposed.
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Affiliation(s)
- Fernanda A L Silva-Alvim
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Jing An
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Jonas C Alvim
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Ombretta Foresti
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Alexandra Grippa
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Alexandra Pelgrom
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Thomas L Adams
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Chris Hawes
- Department of Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Headington, Oxford OX3 0AZ, United Kingdom
| | - Jurgen Denecke
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
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1303
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Gomez-Raya L, Silio L, Rauw WM, Gracia-Cortés LA, Rodríguez C. Extent of third-order linkage disequilibrium in a composite line of Iberian pigs. BMC Genet 2018; 19:60. [PMID: 30119622 PMCID: PMC6098602 DOI: 10.1186/s12863-018-0661-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/26/2018] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Previous studies on linkage disequilibrium have investigated second order linkage disequilibrium in animal and plant populations. The objective of this paper was to investigate the genome-wide levels of third order linkage disequilibrium in a composite line founded by admixture of four Iberian pig strains. A model for the generation of third order linkage disequilibrium by population admixture is proposed. A computer Expectation-Maximization algorithm is developed and applied to the estimation of third order linkage disequilibrium at inter- and intra-chromosomal level using 26,347 SNPs typed in 306 sows. The relationship of third order linkage disequilibrium with physical distance was investigated over 35 million triplets in SSC12. Basic and normalized estimates of inter and intra-chromosomal third order linkage disequilibrium are reported. RESULTS Genome-wide analyses revealed that third order linkage disequilibrium is rather common among linked loci in this Iberian pig line. It is shown that population admixture of multiple populations may explain the observed levels of third order linkage disequilibrium although it could be generated by genetic drift. Third order linkage disequilibrium decreases rapidly up to 4 Mb and then declines slowly. The short distances between consecutive markers explain the maintenance of the observed third order linkage disequilibria levels when using a model incorporating the break-up of disequilibrium by recombination. Genome-wide testing also revealed that only 3.6% of the normalized estimates were different from 1, - 1, 0, or from a not well-defined situation in which there is only one possible value for the third order linkage disequilibrium parameter, given allele frequencies and pairwise linkage disequilibria parameters. CONCLUSIONS Third order linkage disequilibrium is common among linked markers in the analyzed pig line and may have been generated by population admixture of multiple populations or by genetic drift. As with second order linkage disequilibrium, the absolute value of the third order linkage disequilibrium decreases with physical distance. Normalization of third order linkage disequilibrium should be avoided for closely linked bi-allelic loci.
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Affiliation(s)
- Luis Gomez-Raya
- Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Ctra. de La Coruña km 7, Madrid, 28040 Spain
| | - Luis Silio
- Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Ctra. de La Coruña km 7, Madrid, 28040 Spain
| | - Wendy M. Rauw
- Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Ctra. de La Coruña km 7, Madrid, 28040 Spain
| | - Luis Alberto Gracia-Cortés
- Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Ctra. de La Coruña km 7, Madrid, 28040 Spain
| | - Carmen Rodríguez
- Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Ctra. de La Coruña km 7, Madrid, 28040 Spain
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1304
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Llorens C, Arcos SC, Robertson L, Ramos R, Futami R, Soriano B, Ciordia S, Careche M, González-Muñoz M, Jiménez-Ruiz Y, Carballeda-Sangiao N, Moneo I, Albar JP, Blaxter M, Navas A. Functional insights into the infective larval stage of Anisakis simplex s.s., Anisakis pegreffii and their hybrids based on gene expression patterns. BMC Genomics 2018; 19:592. [PMID: 30086708 PMCID: PMC6080401 DOI: 10.1186/s12864-018-4970-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 07/30/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Anisakis simplex sensu stricto and Anisakis pegreffii are sibling species of nematodes parasitic on marine mammals. Zoonotic human infection with third stage infective larvae causes anisakiasis, a debilitating and potentially fatal disease. These 2 species show evidence of hybridisation in geographical areas where they are sympatric. How the species and their hybrids differ is still poorly understood. RESULTS Third stage larvae of Anisakis simplex s.s., Anisakis pegreffii and hybrids were sampled from Merluccius merluccius (Teleosti) hosts captured in waters of the FAO 27 geographical area. Specimens of each species and hybrids were distinguished with a diagnostic genetic marker (ITS). RNA was extracted from pools of 10 individuals of each taxon. Transcriptomes were generated using Illumina RNA-Seq, and assembled de novo. A joint assembly (here called merged transcriptome) of all 3 samples was also generated. The inferred transcript sets were functionally annotated and compared globally and also on subsets of secreted proteins and putative allergen families. While intermediary metabolism appeared to be typical for nematodes in the 3 evaluated taxa, their transcriptomes present strong levels of differential expression and enrichment, mainly of transcripts related to metabolic pathways and gene ontologies associated to energy metabolism and other pathways, with significant presence of excreted/secreted proteins, most of them allergens. The allergome of the 2 species and their hybrids has also been thoroughly studied; at least 74 different allergen families were identified in the transcriptomes. CONCLUSIONS A. simplex s.s., A. pegreffi and their hybrids differ in gene expression patterns in the L3 stage. Strong parent-of-origin effects were observed: A. pegreffi alleles dominate in the expression patterns of hybrids albeit the latter, and A. pegreffii also display significant differences indicating that hybrids are intermediate biological entities among their parental species, and thus of outstanding interest in the study of speciation in nematodes. Analyses of differential expression based on genes coding for secreted proteins suggests that co-infections presents different repertoires of released protein to the host environment. Both species and their hybrids, share more allergen genes than previously thought and are likely to induce overlapping disease responses.
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Affiliation(s)
- C. Llorens
- Biotechvana, Scientific Park, University of Valencia, Calle Catedrático José Beltrán 2, 46980 Paterna, Valencia Spain
| | - S. C. Arcos
- Departamento Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales, CSIC, Calle José Gutiérrez Abascal, 2, 28006 Madrid, Spain
| | - L. Robertson
- Departamento Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales, CSIC, Calle José Gutiérrez Abascal, 2, 28006 Madrid, Spain
| | - R. Ramos
- Unidad de Genómica, Campus de Cantoblanco, Scientific Park of Madrid, Calle Faraday, 7, Campus de Cantoblanco, 28049 Madrid, Spain
| | - R. Futami
- Biotechvana, Scientific Park, University of Valencia, Calle Catedrático José Beltrán 2, 46980 Paterna, Valencia Spain
| | - B. Soriano
- Biotechvana, Scientific Park, University of Valencia, Calle Catedrático José Beltrán 2, 46980 Paterna, Valencia Spain
| | - S. Ciordia
- Unidad de Proteomica Centro Nacional de Biotecnología, CSIC, Calle Darwin, 3, 28049 Madrid, Spain
| | - M. Careche
- Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN), Calle José Antonio Novais, 10, 28040 Madrid, Spain
| | - M. González-Muñoz
- Servicio de Immunología, Hospital Universitario La Paz, Paseo de la Castellana, 261, 28046 Madrid, Spain
| | - Y. Jiménez-Ruiz
- Departamento Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales, CSIC, Calle José Gutiérrez Abascal, 2, 28006 Madrid, Spain
| | - N. Carballeda-Sangiao
- Servicio de Immunología, Hospital Universitario La Paz, Paseo de la Castellana, 261, 28046 Madrid, Spain
| | - I. Moneo
- Servicio de Immunología, Hospital Universitario La Paz, Paseo de la Castellana, 261, 28046 Madrid, Spain
| | - J. P. Albar
- Unidad de Proteomica Centro Nacional de Biotecnología, CSIC, Calle Darwin, 3, 28049 Madrid, Spain
| | - M. Blaxter
- Edinburgh Genomics, and Institute of Evolutionary Biology, School of Biological Sciences, The King’s Buildings, The University of Edinburgh, Edinburgh, EH9 3JT UK
| | - A. Navas
- Departamento Biodiversidad y Biología Evolutiva, Museo Nacional de Ciencias Naturales, CSIC, Calle José Gutiérrez Abascal, 2, 28006 Madrid, Spain
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1305
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Kilburn K, Prencipe L, Hjelm L, Peterman A, Handa S, Palermo T. Examination of performance of the Center for Epidemiologic Studies Depression Scale Short Form 10 among African youth in poor, rural households. BMC Psychiatry 2018; 18:201. [PMID: 29914413 PMCID: PMC6006708 DOI: 10.1186/s12888-018-1774-z] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 06/05/2018] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Youth mental health has emerged as a pressing global issue. However, to advance research gaps in low-income settings, we need valid measures of common mental health disorders. Using primary data collected in five countries (Kenya, Malawi, Tanzania, Zambia, and Zimbabwe), this study aims to assess the psychometric properties of the commonly used 10-item Center for Epidemiological Studies Depression (CES-D 10) scale among poor, disadvantaged youth populations in sub-Saharan African (SSA). METHODS Youth samples from each country (sample sizes ranging from 651 to 2098) come from large household surveys with youth modules, collected for impact evaluations of cash transfer programs targeted to poor families. For each sample, we assessed internal consistency (alpha), conducted factor analysis, and then examined construct validity and measurement invariance. We performed both exploratory (EFA) and confirmatory factor analysis (CFA) to examine and confirm the structure of the CES-D 10 for each country and then used multigroup CFA to assess measurement invariance across gender and age. Multivariate analyses were conducted to assess construct validity via test of the relationship between CES-D 10 and background characteristics. RESULTS Results show the CES-D 10 had strong psychometric properties and was a reliable measure of depressive symptoms among disadvantaged youth in SSA. Across countries, there was high internal consistency (Cronbach alphas = 0.70-0.76) and the traditional two-factor solution showed good model fit. Full measurement invariance of the CES-D 10 was supported across gender. Consistent with previous literature on risk factors for depressive symptoms, the CES-D 10 was associated with increasing age, and female gender and being out of school in some locations. CONCLUSIONS Results from this study support broad use of the CES-D 10 among poor youth populations in SSA. Between one-third and two-thirds of our samples demonstrated depressive symptoms as classified by recommended cut-offs for the CES-D 10, indicating a high burden of mental illness in disadvantaged youth populations. This tool can be used in future efforts to study prevalence and dynamics of depressive symptoms in this population, as well as effectiveness of policies and interventions to improve the mental health of youth in SSA.
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Affiliation(s)
- Kelly Kilburn
- Institute for Global Health and Infectious Diseases, University of North Carolina, Bioinformatics CB# 7030, Chapel Hill, NC 27599-7030 USA
| | - Leah Prencipe
- UNICEF Office of Research – Innocenti, Piazza SS. Annunziata, 12, 50122 Florence, Italy
| | - Lisa Hjelm
- UNICEF East and Southern Africa Regional Office, P.O. Box 44145, Nairobi, 00100 Kenya
| | - Amber Peterman
- UNICEF Office of Research – Innocenti, Piazza SS. Annunziata, 12, 50122 Florence, Italy
| | - Sudhanshu Handa
- Department of Public Policy, University of North Carolina, Abernethy Hall CB #3435, Chapel Hill, NC 27599-3435 USA
| | - Tia Palermo
- UNICEF Office of Research – Innocenti, Piazza SS. Annunziata, 12, 50122 Florence, Italy
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1306
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Vouraki S, Gelasakis AI, Alexandri P, Boukouvala E, Ekateriniadou LV, Banos G, Arsenos G. Genetic profile of scrapie codons 146, 211 and 222 in the PRNP gene locus in three breeds of dairy goats. PLoS One 2018; 13:e0198819. [PMID: 29879210 PMCID: PMC5991713 DOI: 10.1371/journal.pone.0198819] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 05/27/2018] [Indexed: 11/29/2022] Open
Abstract
Polymorphisms at PRNP gene locus have been associated with resistance against classical scrapie in goats. Genetic selection on this gene within appropriate breeding programs may contribute to the control of the disease. The present study characterized the genetic profile of codons 146, 211 and 222 in three dairy goat breeds in Greece. A total of 766 dairy goats from seven farms were used. Animals belonged to two indigenous Greek, Eghoria (n = 264) and Skopelos (n = 287) and a foreign breed, Damascus (n = 215). Genomic DNA was extracted from blood samples from individual animals. Polymorphisms were detected in these codons using Real-Time PCR analysis and four different Custom TaqMan® SNP Genotyping Assays. Genotypic, allelic and haplotypic frequencies were calculated based on individual animal genotypes. Chi-square tests were used to examine Hardy-Weinberg equilibrium state and compare genotypic distribution across breeds. Genetic distances among the three breeds, and between these and 30 breeds reared in other countries were estimated based on haplotypic frequencies using fixation index FST with Arlequin v3.1 software; a Neighbor-Joining tree was created using PHYLIP package v3.695. Level of statistical significance was set at P = 0.01. All scrapie resistance-associated alleles (146S, 146D, 211Q and 222K) were detected in the studied population. Significant frequency differences were observed between the indigenous Greek and Damascus breeds. Alleles 222K and 146S had the highest frequency in the two indigenous and the Damascus breed, respectively (ca. 6.0%). The studied breeds shared similar haplotypic frequencies with most South Italian and Turkish breeds but differed significantly from North-Western European, Far East and some USA goat breeds. Results suggest there is adequate variation in the PRNP gene locus to support breeding programs for enhanced scrapie resistance in goats reared in Greece. Genetic comparisons among goat breeds indicate that separate breeding programs should apply to the two indigenous and the imported Damascus breeds.
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Affiliation(s)
- Sotiria Vouraki
- Laboratory of Animal Husbandry, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Athanasios I. Gelasakis
- Veterinary Research Institute of Thessaloniki, Hellenic Agricultural Organization Demeter, Thessaloniki, Greece
| | - Panoraia Alexandri
- Laboratory of Animal Husbandry, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Evridiki Boukouvala
- Veterinary Research Institute of Thessaloniki, Hellenic Agricultural Organization Demeter, Thessaloniki, Greece
| | - Loukia V. Ekateriniadou
- Veterinary Research Institute of Thessaloniki, Hellenic Agricultural Organization Demeter, Thessaloniki, Greece
| | - Georgios Banos
- Laboratory of Animal Husbandry, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
- Scotland’s Rural College and The Roslin Institute, University of Edinburgh, Scotland, United Kingdom
| | - Georgios Arsenos
- Laboratory of Animal Husbandry, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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1307
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Warr DA, Perdigão LMA, Pinfold H, Blohm J, Stringer D, Leventis A, Bronstein H, Troisi A, Costantini G. Sequencing conjugated polymers by eye. Sci Adv 2018; 4:eaas9543. [PMID: 29922716 PMCID: PMC6003723 DOI: 10.1126/sciadv.aas9543] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 05/03/2018] [Indexed: 05/27/2023]
Abstract
The solid-state microstructure of a conjugated polymer is the most important parameter determining its properties and performance in (opto)-electronic devices. A huge amount of research has been dedicated to tuning and understanding how the sequence of monomers, the nature and frequency of defects, the exact backbone conformation, and the assembly and crystallinity of conjugated polymers affect their basic photophysics and charge transporting properties. However, because of the lack of reliable high-resolution analytical techniques, all the structure-property relations proposed in the literature are based either on molecular modeling or on indirect experimental data averaged on polydisperse samples. We show that a combination of electrospray vacuum deposition and high-resolution scanning tunneling microscopy allows the imaging of individual conjugated polymers with unprecedented detail, thereby unraveling structural and self-assembly characteristics that have so far been impossible to determine.
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Affiliation(s)
- Daniel A. Warr
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
| | | | - Harry Pinfold
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
| | - Jonathan Blohm
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
| | - David Stringer
- Department of Chemistry, Imperial College London, London SW7 2AZ, UK
| | | | - Hugo Bronstein
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | - Alessandro Troisi
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK
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1308
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Abstract
Sulphonylurea drugs stimulate insulin secretion from pancreatic β-cells primarily by inhibiting ATP sensitive potassium (KATP) channels in the β-cell membrane. The effective sulphonylurea concentration at its site of action is significantly attenuated by binding to serum albumin, which makes it difficult to compare in vitro and in vivo data. We therefore measured the ability of gliclazide and glibenclamide to inhibit KATP channels and stimulate insulin secretion in the presence of serum albumin. We used this data, together with estimates of free drug concentrations from binding studies, to predict the extent of sulphonylurea inhibition of KATP channels at therapeutic concentrations in vivo. KATP currents from mouse pancreatic β-cells and Xenopus oocytes were measured using the patch-clamp technique. Gliclazide and glibenclamide binding to human plasma were determined in spiked plasma samples using an ultrafiltration-mass spectrometry approach. Bovine serum albumin (60g/l) produced a mild, non-significant reduction of gliclazide block of KATP currents in pancreatic β-cells and Xenopus oocytes. In contrast, glibenclamide inhibition of recombinant KATP channels was dramatically suppressed by albumin (predicted free drug concentration <0.1%). Insulin secretion was also reduced. Free concentrations of gliclazide and glibenclamide in the presence of human plasma measured in binding experiments were 15% and 0.05%, respectively. Our data suggest the free concentration of glibenclamide in plasma is too low to account for the drug’s therapeutic effect. In contrast, the free gliclazide concentration in plasma is high enough to close KATP channels and stimulate insulin secretion.
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Affiliation(s)
- Peter Proks
- Oxford Centre for Gene Function, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Holger Kramer
- Oxford Centre for Gene Function, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Elizabeth Haythorne
- Oxford Centre for Gene Function, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
| | - Frances M. Ashcroft
- Oxford Centre for Gene Function, Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, United Kingdom
- * E-mail:
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1309
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Denk J, Oberhauser F, Kornhuber J, Wiltfang J, Fassbender K, Schroeter ML, Volk AE, Diehl-Schmid J, Prudlo J, Danek A, Landwehrmeyer B, Lauer M, Otto M, Jahn H. Specific serum and CSF microRNA profiles distinguish sporadic behavioural variant of frontotemporal dementia compared with Alzheimer patients and cognitively healthy controls. PLoS One 2018; 13:e0197329. [PMID: 29746584 PMCID: PMC5945001 DOI: 10.1371/journal.pone.0197329] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 04/29/2018] [Indexed: 12/12/2022] Open
Abstract
Information on circulating miRNAs in frontotemporal lobar degeneration is very limited and conflicting results have complicated an interpretation in Alzheimer's disease thus far. In the present study we I) collected samples from multiple clinical centers across Germany, II) defined 3 homogenous patient groups with high sample sizes (bvFTD n = 48, AD n = 48 and cognitively healthy controls n = 44), III) compared expression levels in both CSF and serum samples and IV) detected a limited set of miRNAs by using a MIQE compliant protocol based on SYBR-green miRCURY assays that have proven reliable to generate reproducible results. We included several quality controls that identified and reduced technical variation to increase the reliability of our data. We showed that the expression levels of circulating miRNAs measured in CSF did not correlate with levels in serum. Using cluster analysis we found expression pattern in serum that, in part, reflects the genomic organization and affiliation to a specific miRNA family and that were specifically altered in bvFTD, AD, and control groups. Applying factor analysis we identified a 3-factor model characterized by a miRNA signature that explained 80% of the variance classifying healthy controls with 97%, bvFTD with 77% and AD with 72% accuracy. MANOVA confirmed signals like miR-320a and miR-26b-5p at BH corrected significance that contributed most to discriminate bvFTD cases with 96% sensitivity and 90% specificity and AD cases with 89% sensitivity and specificity compared to healthy controls, respectively. Correlation analysis revealed that miRNAs from the 3-factor model also correlated with levels of protein biomarker amyloid-beta1-42 and phosphorylated neurofilament heavy chain, indicating their potential role in the monitoring of progressive neuronal degeneration. Our data show that miRNAs can be reproducibly measured in serum and CSF without pre-amplification and that serum includes higher expressed signals that demonstrate an overall better ability to classify bvFTD, AD and healthy controls compared to signals detected in CSF.
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Affiliation(s)
- Johannes Denk
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Felix Oberhauser
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Johannes Kornhuber
- Department of Psychiatry and Psychotherapy, Friedrich-Alexander-University of Erlangen-Nuremberg, Erlangen, Germany
| | - Jens Wiltfang
- Department of Psychiatry and Psychotherapy, University Medical Center Goettingen, Goettingen, Germany
| | | | - Matthias L. Schroeter
- Clinic for Cognitive Neurology, University Clinic Leipzig and Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - Alexander E. Volk
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Johannes Prudlo
- Department of Neurology, University of Rostock, Rostock, Germany
| | - Adrian Danek
- Department of Neurology, Ludwig-Maximilians-University, Munich, Germany
| | | | - Martin Lauer
- Department of Psychiatry and Psychotherapy, University of Wuerzburg, Wuerzburg, Germany
| | - Markus Otto
- Department of Neurology, University of Ulm, Ulm, Germany
| | - Holger Jahn
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- AMEOS Klinikum, Heiligenhafen, Heiligenhafen, Germany
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1310
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Molnár T, Csuvár A, Benedek I, Molnár M, Kabai P. Domestication affects exploratory behaviour of pikeperch (Sander lucioperca L.) during the transition to pelleted food. PLoS One 2018; 13:e0196118. [PMID: 29742135 PMCID: PMC5942806 DOI: 10.1371/journal.pone.0196118] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 04/07/2018] [Indexed: 01/07/2023] Open
Abstract
Genetic selection for body size during domestication of animal species can inadvertently affect a number of physiological and behavioural traits. The pace-of-life syndrome (POLS) hypothesis predicts that domestication in an artificial environment lacking predators and providing abundant resources prefers proactive individuals with strong feeding motivation, high levels of aggression and risk taking, with low hypothalamus-pituitary-adrenal (HPA) axis responsiveness. In the present experiment we weaned fingerling pike-perch from live feed and habituated them to formulated feed. We recorded the number of weeks needed for the fish to accept pellets, their body length at the age of 100 days, their boldness in a novel object test and their HPI axis responsiveness. Individuals accepting the artificial feed within the first week grew larger than fish habituating later; therefore early weaners would be kept and bred in routine aquaculture procedures. Contrary to predictions of POLS hypothesis, fish weaning earlier and thus growing faster were less bold and had higher HPI axis responsiveness than fish accepting the pellets later or never. As live feed is preferred to artificial pellets, less competitive individuals may switch to pellets earlier. Inadvertent selection for stress sensitive fish may have an effect on production in aquaculture as well as on natural population after intensive restocking.
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Affiliation(s)
- Tamás Molnár
- Institute of Environmental Science and Nature Protection, Kaposvár University, Kaposvár, Hungary
- * E-mail:
| | - Adrienn Csuvár
- Institute of Environmental Science and Nature Protection, Kaposvár University, Kaposvár, Hungary
| | - Ildikó Benedek
- Institute of Environmental Science and Nature Protection, Kaposvár University, Kaposvár, Hungary
| | - Marcell Molnár
- Institute of Environmental Science and Nature Protection, Kaposvár University, Kaposvár, Hungary
| | - Péter Kabai
- Institute of Environmental Science and Nature Protection, Kaposvár University, Kaposvár, Hungary
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1311
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Kurian SM, Di Pietro A, Read ND. Live-cell imaging of conidial anastomosis tube fusion during colony initiation in Fusarium oxysporum. PLoS One 2018; 13:e0195634. [PMID: 29734342 PMCID: PMC5937734 DOI: 10.1371/journal.pone.0195634] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 03/26/2018] [Indexed: 01/07/2023] Open
Abstract
Fusarium oxysporum exhibits conidial anastomosis tube (CAT) fusion during colony initiation to form networks of conidial germlings. Here we determined the optimal culture conditions for this fungus to undergo CAT fusion between microconidia in liquid medium. Extensive high resolution, confocal live-cell imaging was performed to characterise the different stages of CAT fusion, using genetically encoded fluorescent labelling and vital fluorescent organelle stains. CAT homing and fusion were found to be dependent on adhesion to the surface, in contrast to germ tube development which occurs in the absence of adhesion. Staining with fluorescently labelled concanavalin A indicated that the cell wall composition of CATs differs from that of microconidia and germ tubes. The movement of nuclei, mitochondria, vacuoles and lipid droplets through fused germlings was observed by live-cell imaging.
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Affiliation(s)
- Smija M. Kurian
- Manchester Fungal Infection Group, Institute of Inflammation and Repair, University of Manchester, Manchester, United Kingdom
| | - Antonio Di Pietro
- Departamento de Genetica, Universidad de Cordoba, Campus Rabanales C5, Cordoba, Spain
| | - Nick D. Read
- Manchester Fungal Infection Group, Institute of Inflammation and Repair, University of Manchester, Manchester, United Kingdom
- * E-mail:
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1312
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Tura A, Chemello G, Szendroedi J, Göbl C, Færch K, Vrbíková J, Pacini G, Ferrannini E, Roden M. Prediction of clamp-derived insulin sensitivity from the oral glucose insulin sensitivity index. Diabetologia 2018; 61:1135-1141. [PMID: 29484470 DOI: 10.1007/s00125-018-4568-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 01/18/2018] [Indexed: 10/17/2022]
Abstract
AIMS/HYPOTHESIS The euglycaemic-hyperinsulinaemic clamp is the gold-standard method for measuring insulin sensitivity, but is less suitable for large clinical trials. Thus, several indices have been developed for evaluating insulin sensitivity from the oral glucose tolerance test (OGTT). However, most of them yield values different from those obtained by the clamp method. The aim of this study was to develop a new index to predict clamp-derived insulin sensitivity (M value) from the OGTT-derived oral glucose insulin sensitivity index (OGIS). METHODS We analysed datasets of people that underwent both a clamp and an OGTT or meal test, thereby allowing calculation of both the M value and OGIS. The population was divided into a training and a validation cohort (n = 359 and n = 154, respectively). After a stepwise selection approach, the best model for M value prediction was applied to the validation cohort. This cohort was also divided into subgroups according to glucose tolerance, obesity category and age. RESULTS The new index, called PREDIcted M (PREDIM), was based on OGIS, BMI, 2 h glucose during OGTT and fasting insulin. Bland-Altman analysis revealed a good relationship between the M value and PREDIM in the validation dataset (only 9 of 154 observations outside limits of agreement). Also, no significant differences were found between the M value and PREDIM (equivalence test: p < 0.0063). Subgroup stratification showed that measured M value and PREDIM have a similar ability to detect intergroup differences (p < 0.02, both M value and PREDIM). CONCLUSIONS/INTERPRETATION The new index PREDIM provides excellent prediction of M values from OGTT or meal data, thereby allowing comparison of insulin sensitivity between studies using different tests.
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Affiliation(s)
- Andrea Tura
- Metabolic Unit, CNR Institute of Neuroscience, Corso Stati Uniti 4, 35127, Padova, Italy.
| | - Gaetano Chemello
- Metabolic Unit, CNR Institute of Neuroscience, Corso Stati Uniti 4, 35127, Padova, Italy
| | - Julia Szendroedi
- Division of Endocrinology and Diabetology, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
- Institute for Clinical Diabetology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research, Düsseldorf, Germany
- German Center for Diabetes Research (DZD), München-Neuherberg, Germany
| | - Christian Göbl
- Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-maternal Medicine, Medical University of Vienna, Vienna, Austria
| | | | | | - Giovanni Pacini
- Metabolic Unit, CNR Institute of Neuroscience, Corso Stati Uniti 4, 35127, Padova, Italy
| | | | - Michael Roden
- Division of Endocrinology and Diabetology, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
- Institute for Clinical Diabetology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research, Düsseldorf, Germany
- German Center for Diabetes Research (DZD), München-Neuherberg, Germany
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1313
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Lee JJY, Gottlieb MM, Lever J, Jones SJM, Blau N, van Karnebeek CDM, Wasserman WW. Text-based phenotypic profiles incorporating biochemical phenotypes of inborn errors of metabolism improve phenomics-based diagnosis. J Inherit Metab Dis 2018; 41:555-562. [PMID: 29340838 PMCID: PMC5959948 DOI: 10.1007/s10545-017-0125-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 12/01/2017] [Accepted: 12/05/2017] [Indexed: 01/28/2023]
Abstract
Phenomics is the comprehensive study of phenotypes at every level of biology: from metabolites to organisms. With high throughput technologies increasing the scope of biological discoveries, the field of phenomics has been developing rapid and precise methods to collect, catalog, and analyze phenotypes. Such methods have allowed phenotypic data to be widely used in medical applications, from assisting clinical diagnoses to prioritizing genomic diagnoses. To channel the benefits of phenomics into the field of inborn errors of metabolism (IEM), we have recently launched IEMbase, an expert-curated knowledgebase of IEM and their disease-characterizing phenotypes. While our efforts with IEMbase have realized benefits, taking full advantage of phenomics requires a comprehensive curation of IEM phenotypes in core phenomics projects, which is dependent upon contributions from the IEM clinical and research community. Here, we assess the inclusion of IEM biochemical phenotypes in a core phenomics project, the Human Phenotype Ontology. We then demonstrate the utility of biochemical phenotypes using a text-based phenomics method to predict gene-disease relationships, showing that the prediction of IEM genes is significantly better using biochemical rather than clinical profiles. The findings herein provide a motivating goal for the IEM community to expand the computationally accessible descriptions of biochemical phenotypes associated with IEM in phenomics resources.
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Affiliation(s)
- Jessica J Y Lee
- Centre for Molecular Medicine and Therapeutics, BC Children's Hospital Research Institute, University of British Columbia, Room 3109, 950 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada
| | - Michael M Gottlieb
- Centre for Molecular Medicine and Therapeutics, BC Children's Hospital Research Institute, University of British Columbia, Room 3109, 950 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada
| | - Jake Lever
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, Canada
| | - Steven J M Jones
- Canada's Michael Smith Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, Canada
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Nenad Blau
- Dietmar-Hopp Metabolic Center, Department of General Pediatrics, University Hospital, Heidelberg, Germany
| | - Clara D M van Karnebeek
- Centre for Molecular Medicine and Therapeutics, BC Children's Hospital Research Institute, University of British Columbia, Room 3109, 950 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada
- Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
- Departments of Pediatrics and Clinical Genetics, Emma Children's Hospital, Academic Medical Centre, Amsterdam, The Netherlands
| | - Wyeth W Wasserman
- Centre for Molecular Medicine and Therapeutics, BC Children's Hospital Research Institute, University of British Columbia, Room 3109, 950 West 28th Avenue, Vancouver, BC, V5Z 4H4, Canada.
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada.
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1314
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Schulze H, Nacke M, Gutenbrunner C, Hadamitzky C. Worldwide assessment of healthcare personnel dealing with lymphoedema. Health Econ Rev 2018; 8:10. [PMID: 29663122 PMCID: PMC5901432 DOI: 10.1186/s13561-018-0194-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Accepted: 04/03/2018] [Indexed: 05/29/2023]
Abstract
BACKGROUND Lymphoedema is a pandemic with about 250 million people suffering from this condition worldwide. Lymphatic diseases have considerable public health significance, but yet few professionals are specialised in their management causing a substantial burden on health resources. AIMS AND OBJECTIVES This study aims to give an overview of the approximate number of medical professionals, professional societies, institutions and companies dealing with lymphoedema in various countries. Concepts of improvement for current human resources are considered. METHODS An online database analysis (Google search engine and PubMed) was carried out for each country of the world. Additionally, relevant congress participant lists as well as member lists of significant medical societies and reports of the World Health Organisation were analysed. RESULTS Overall distribution of tertiary level professionals specialised in this field is heterogenous. A decrescent gradient of professionals can be seen between developed and developing countries and between urban and rural areas. Countries in general do not seem to have yet met the current demand for specialists at tertiary level in this field. CONCLUSIONS This study intends to draw attention to the current medical coverage gaps due to a low number of lymphoedema specialists at tertiary level. It wishes to start a discussion about structured reimbursement and certification of knowledge and skills that are essential incentives for experts to act as multiplicators and change the lack of care in the mid-term. Current fail prescriptions and evitable disability and sick certificates represent a high financial burden that could be reinvested in a correct management. Policy makers must focus in the two above mentioned essential measures. Medical training and the consequent development of the industry will then naturally take place, as it was the case for other professional groups in the past.
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Affiliation(s)
- Henrike Schulze
- Clinic of Rehabilitation Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - Marisa Nacke
- Cancer Research UK, Beatson Institute, Glasgow, UK
| | - Christoph Gutenbrunner
- Clinic of Rehabilitation Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
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1315
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Stern J, Moraïs S, Ben-David Y, Salama R, Shamshoum M, Lamed R, Shoham Y, Bayer EA, Mizrahi I. Assembly of Synthetic Functional Cellulosomal Structures onto the Cell Surface of Lactobacillus plantarum, a Potent Member of the Gut Microbiome. Appl Environ Microbiol 2018; 84:e00282-18. [PMID: 29453253 PMCID: PMC5881048 DOI: 10.1128/aem.00282-18] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 02/08/2018] [Indexed: 12/27/2022] Open
Abstract
Heterologous display of enzymes on microbial cell surfaces is an extremely desirable approach, since it enables the engineered microbe to interact directly with the plant wall extracellular polysaccharide matrix. In recent years, attempts have been made to endow noncellulolytic microbes with genetically engineered cellulolytic capabilities for improved hydrolysis of lignocellulosic biomass and for advanced probiotics. Thus far, however, owing to the hurdles encountered in secreting and assembling large, intricate complexes on the bacterial cell wall, only free cellulases or relatively simple cellulosome assemblies have been introduced into live bacteria. Here, we employed the "adaptor scaffoldin" strategy to compensate for the low levels of protein displayed on the bacterial cell surface. That strategy mimics natural elaborated cellulosome architectures, thus exploiting the exponential features of their Lego-like combinatorics. Using this approach, we produced several bacterial consortia of Lactobacillus plantarum, a potent gut microbe which provides a very robust genetic framework for lignocellulosic degradation. We successfully engineered surface display of large, fully active self-assembling cellulosomal complexes containing an unprecedented number of catalytic subunits all produced in vivo by the cell consortia. Our results demonstrate that the enzyme stability and performance of the cellulosomal machinery, which are superior to those seen with the equivalent secreted free enzyme system, and the high cellulase-to-xylanase ratios proved beneficial for efficient degradation of wheat straw.IMPORTANCE The multiple benefits of lactic acid bacteria are well established in health and industry. Here we present an approach designed to extensively increase the cell surface display of proteins via successive assembly of interactive components. Our findings present a stepping stone toward proficient engineering of Lactobacillus plantarum, a widespread, environmentally important bacterium and potent microbiome member, for improved degradation of lignocellulosic biomass and advanced probiotics.
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Affiliation(s)
- Johanna Stern
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Sarah Moraïs
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
- Faculty of Natural Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Yonit Ben-David
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Rachel Salama
- Department of Biotechnology and Food Engineering, The Technion Israel Institute of Technology, Haifa, Israel
| | - Melina Shamshoum
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Raphael Lamed
- Department of Molecular Microbiology and Biotechnology, Tel Aviv University, Ramat Aviv, Israel
| | - Yuval Shoham
- Department of Biotechnology and Food Engineering, The Technion Israel Institute of Technology, Haifa, Israel
| | - Edward A Bayer
- Department of Biomolecular Sciences, The Weizmann Institute of Science, Rehovot, Israel
| | - Itzhak Mizrahi
- Faculty of Natural Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
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1316
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Mindus S, Malinovschi A, Ekerljung L, Forsberg B, Gíslason T, Jõgi R, Franklin KA, Holm M, Johannessen A, Middelveld R, Schlünssen V, Svanes C, Torén K, Lindberg E, Janson C. Asthma and COPD overlap (ACO) is related to a high burden of sleep disturbance and respiratory symptoms: Results from the RHINE and Swedish GA2LEN surveys. PLoS One 2018; 13:e0195055. [PMID: 29608582 PMCID: PMC5880361 DOI: 10.1371/journal.pone.0195055] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 03/15/2018] [Indexed: 01/18/2023] Open
Abstract
Background The term Asthma and COPD Overlap (ACO) describes a condition where asthma and COPD overlap. We aimed to investigate associations between ACO and insomnia and respiratory symptoms, and to investigate the prevalence of ACO and the characteristics of subjects with ACO in two Northern European population studies. Methods The study comprised 25 429 subjects aged ≥ 40 years who participated in one of two Northern European general population surveys. Both surveys included questions on asthma, COPD, respiratory and sleep-related symptoms, including difficulty initiating sleep, difficulty maintaining sleep, early-morning awakening, and excessive daytime sleepiness. ACO was defined as having both self-reported asthma and COPD. Results The prevalence of ACO was 1.0%. The group with ACO had a higher prevalence of both insomnia and respiratory symptoms than subjects with only asthma or COPD. Having ACO was independently associated with a 2–3 times higher probability of having sleep-related symptoms as compared with the group without asthma or COPD, after adjustment for age, sex, BMI, smoking history and educational level (adjusted odds ratio 2.14–3.36, 95% CI). Conclusion Subjects with ACO have a high prevalence of insomnia and respiratory symptoms. To our knowledge, this is the first study to assess the association between sleep-related symptoms and ACO.
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Affiliation(s)
- Stephanie Mindus
- Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
| | - Andrei Malinovschi
- Department of Medical Sciences: Clinical Physiology, Uppsala University, Uppsala, Sweden
| | - Linda Ekerljung
- Institute of Medicine at Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Bertil Forsberg
- Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | | | - Rain Jõgi
- Lung Clinic, Tartu University Clinics, Tartu, Estonia
| | - Karl A. Franklin
- Department of Surgical and Perioperative Sciences, Umeå University, Umeå, Sweden
| | - Mathias Holm
- Department of Occupational and Environmental Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Ane Johannessen
- Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway
| | - Roelinde Middelveld
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Vivi Schlünssen
- Department of Public Health, Section for Environment, Occupation and Health, Aarhus University, Aarhus, Denmark
| | - Cecilie Svanes
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway, Centre for International Health, University of Bergen, Bergen, Norway
| | - Kjell Torén
- Department of Occupational and Environmental Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Eva Lindberg
- Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
| | - Christer Janson
- Department of Medical Sciences, Respiratory, Allergy and Sleep Research, Uppsala University, Uppsala, Sweden
- * E-mail:
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1317
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Strindberg S, Maisels F, Williamson EA, Blake S, Stokes EJ, Aba’a R, Abitsi G, Agbor A, Ambahe RD, Bakabana PC, Bechem M, Berlemont A, Bokoto de Semboli B, Boundja PR, Bout N, Breuer T, Campbell G, De Wachter P, Ella Akou M, Esono Mba F, Feistner ATC, Fosso B, Fotso R, Greer D, Inkamba-Nkulu C, Iyenguet CF, Jeffery KJ, Kokangoye M, Kühl HS, Latour S, Madzoke B, Makoumbou C, Malanda GAF, Malonga R, Mbolo V, Morgan DB, Motsaba P, Moukala G, Mowawa BS, Murai M, Ndzai C, Nishihara T, Nzooh Z, Pintea L, Pokempner A, Rainey HJ, Rayden T, Ruffler H, Sanz CM, Todd A, Vanleeuwe H, Vosper A, Warren Y, Wilkie DS. Guns, germs, and trees determine density and distribution of gorillas and chimpanzees in Western Equatorial Africa. Sci Adv 2018; 4:eaar2964. [PMID: 29707637 PMCID: PMC5916511 DOI: 10.1126/sciadv.aar2964] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 03/12/2018] [Indexed: 06/08/2023]
Abstract
We present a range-wide assessment of sympatric western lowland gorillas Gorilla gorilla gorilla and central chimpanzees Pan troglodytes troglodytes using the largest survey data set ever assembled for these taxa: 59 sites in five countries surveyed between 2003 and 2013, totaling 61,000 person-days of fieldwork. We used spatial modeling to investigate major drivers of great ape distribution and population trends. We predicted density across each taxon's geographic range, allowing us to estimate overall abundance: 361,900 gorillas and 128,700 chimpanzees in Western Equatorial Africa-substantially higher than previous estimates. These two subspecies represent close to 99% of all gorillas and one-third of all chimpanzees. Annual population decline of gorillas was estimated at 2.7%, maintaining them as Critically Endangered on the International Union for Conservation of Nature and Natural Resources (IUCN) Red List. We quantified the threats to each taxon, of which the three greatest were poaching, disease, and habitat degradation. Gorillas and chimpanzees are found at higher densities where forest is intact, wildlife laws are enforced, human influence is low, and disease impacts have been low. Strategic use of the results of these analyses could conserve the majority of gorillas and chimpanzees. With around 80% of both subspecies occurring outside protected areas, their conservation requires reinforcement of anti-poaching efforts both inside and outside protected areas (particularly where habitat quality is high and human impact is low), diligent disease control measures (including training, advocacy, and research into Ebola virus disease), and the preservation of high-quality habitat through integrated land-use planning and implementation of best practices by the extractive and agricultural industries.
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Affiliation(s)
- Samantha Strindberg
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Fiona Maisels
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
- Faculty of Natural Sciences, University of Stirling, Stirling FK9 4LA, Scotland, UK
| | | | - Stephen Blake
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
- Department of Biology, Saint Louis University, Macelwane Hall, St. Louis, MO 63108, USA
| | - Emma J. Stokes
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Rostand Aba’a
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Gaspard Abitsi
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Anthony Agbor
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
- Conservation International, 2011 Crystal Drive, Suite 500, Arlington, VA 22202, USA
| | - Ruffin D. Ambahe
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Parfait C. Bakabana
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Martha Bechem
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
- Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES)–Monitoring the Illegal Killing of Elephants (MIKE), MIKE Subregional Office, Yaoundé, BP 5506, Cameroon
| | - Antoine Berlemont
- Conservation International, 2011 Crystal Drive, Suite 500, Arlington, VA 22202, USA
| | | | - Patrick R. Boundja
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Nicolas Bout
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Thomas Breuer
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Genevieve Campbell
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
| | - Pauwel De Wachter
- World Wildlife Fund International, Regional Office for Africa, BP 6776 Yaoundé, Cameroon
| | - Marc Ella Akou
- World Wildlife Fund International, Regional Office for Africa, BP 6776 Yaoundé, Cameroon
| | - Fidel Esono Mba
- Instituto Nacional de Desarrollo Forestal y Gestión del Sistema Nacional de Áreas Protegidas, Bata, Equatorial Guinea
| | - Anna T. C. Feistner
- World Wildlife Fund International, Regional Office for Africa, BP 6776 Yaoundé, Cameroon
| | - Bernard Fosso
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Roger Fotso
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - David Greer
- World Wildlife Fund International, Regional Office for Africa, BP 6776 Yaoundé, Cameroon
| | - Clement Inkamba-Nkulu
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Calixte F. Iyenguet
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Kathryn J. Jeffery
- Faculty of Natural Sciences, University of Stirling, Stirling FK9 4LA, Scotland, UK
| | - Max Kokangoye
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Hjalmar S. Kühl
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
- Robert Bosch Junior Professor, German Centre for Integrative Biodiversity Research (iDiv), Halle-Leipzig-Jena, Leipzig, Germany
| | - Stephanie Latour
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
- The Jane Goodall Institute, 1595 Spring Hill Road, Suite 550, Vienna, VA 22182, USA
| | - Bola Madzoke
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Calixte Makoumbou
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Guy-Aimé F. Malanda
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Richard Malonga
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Victor Mbolo
- World Wildlife Fund International, Regional Office for Africa, BP 6776 Yaoundé, Cameroon
| | - David B. Morgan
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
- Lester E. Fisher Center for the Study and Conservation of Apes, Lincoln Park Zoo, 2001 North Clark Street, Chicago, IL 60614, USA
| | - Prosper Motsaba
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Gabin Moukala
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Brice S. Mowawa
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Mizuki Murai
- Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103 Leipzig, Germany
- Conservation International, 2011 Crystal Drive, Suite 500, Arlington, VA 22202, USA
| | - Christian Ndzai
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Tomoaki Nishihara
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Zacharie Nzooh
- World Wildlife Fund International, Regional Office for Africa, BP 6776 Yaoundé, Cameroon
| | - Lilian Pintea
- The Jane Goodall Institute, 1595 Spring Hill Road, Suite 550, Vienna, VA 22182, USA
| | - Amy Pokempner
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Hugo J. Rainey
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Tim Rayden
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Heidi Ruffler
- Conservation International, 2011 Crystal Drive, Suite 500, Arlington, VA 22202, USA
| | - Crickette M. Sanz
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
- Department of Anthropology, Washington University, 1 Brookings Drive, St. Louis, MO 63130, USA
| | - Angelique Todd
- World Wildlife Fund International, Regional Office for Africa, BP 6776 Yaoundé, Cameroon
| | - Hilde Vanleeuwe
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Ashley Vosper
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - Ymke Warren
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
| | - David S. Wilkie
- Wildlife Conservation Society, Global Conservation Program, 2300 Southern Boulevard, Bronx, New York, NY 10460, USA
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1318
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Abstract
Clustered regularly interspaced short palindromic repeat (CRISPR)-Cas systems are well-known acquired immunity systems that are widespread in archaea and bacteria. The RNA-guided nucleases from CRISPR-Cas systems are currently regarded as the most reliable tools for genome editing and engineering. The first hint of their existence came in 1987, when an unusual repetitive DNA sequence, which subsequently was defined as a CRISPR, was discovered in the Escherichia coli genome during an analysis of genes involved in phosphate metabolism. Similar sequence patterns were then reported in a range of other bacteria as well as in halophilic archaea, suggesting an important role for such evolutionarily conserved clusters of repeated sequences. A critical step toward functional characterization of the CRISPR-Cas systems was the recognition of a link between CRISPRs and the associated Cas proteins, which were initially hypothesized to be involved in DNA repair in hyperthermophilic archaea. Comparative genomics, structural biology, and advanced biochemistry could then work hand in hand, not only culminating in the explosion of genome editing tools based on CRISPR-Cas9 and other class II CRISPR-Cas systems but also providing insights into the origin and evolution of this system from mobile genetic elements denoted casposons. To celebrate the 30th anniversary of the discovery of CRISPR, this minireview briefly discusses the fascinating history of CRISPR-Cas systems, from the original observation of an enigmatic sequence in E. coli to genome editing in humans.
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Affiliation(s)
- Yoshizumi Ishino
- Unité de Biologie Moléculaire du Gène Chez les Extrêmophiles, Département de Microbiologie, Institut Pasteur, Paris, France
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Mart Krupovic
- Unité de Biologie Moléculaire du Gène Chez les Extrêmophiles, Département de Microbiologie, Institut Pasteur, Paris, France
| | - Patrick Forterre
- Unité de Biologie Moléculaire du Gène Chez les Extrêmophiles, Département de Microbiologie, Institut Pasteur, Paris, France
- Institute of Integrative Cellular Biology, Université Paris Sud, Orsay, France
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1319
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Hanchi M, Thibaud MC, Légeret B, Kuwata K, Pochon N, Beisson F, Cao A, Cuyas L, David P, Doerner P, Ferjani A, Lai F, Li-Beisson Y, Mutterer J, Philibert M, Raghothama KG, Rivasseau C, Secco D, Whelan J, Nussaume L, Javot H. The Phosphate Fast-Responsive Genes PECP1 and PPsPase1 Affect Phosphocholine and Phosphoethanolamine Content. Plant Physiol 2018; 176:2943-2962. [PMID: 29475899 PMCID: PMC5884592 DOI: 10.1104/pp.17.01246] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 02/06/2018] [Indexed: 05/24/2023]
Abstract
Phosphate starvation-mediated induction of the HAD-type phosphatases PPsPase1 (AT1G73010) and PECP1 (AT1G17710) has been reported in Arabidopsis (Arabidopsis thaliana). However, little is known about their in vivo function or impact on plant responses to nutrient deficiency. The preferences of PPsPase1 and PECP1 for different substrates have been studied in vitro but require confirmation in planta. Here, we examined the in vivo function of both enzymes using a reverse genetics approach. We demonstrated that PPsPase1 and PECP1 affect plant phosphocholine and phosphoethanolamine content, but not the pyrophosphate-related phenotypes. These observations suggest that the enzymes play a similar role in planta related to the recycling of polar heads from membrane lipids that is triggered during phosphate starvation. Altering the expression of the genes encoding these enzymes had no effect on lipid composition, possibly due to compensation by other lipid recycling pathways triggered during phosphate starvation. Furthermore, our results indicated that PPsPase1 and PECP1 do not influence phosphate homeostasis, since the inactivation of these genes had no effect on phosphate content or on the induction of molecular markers related to phosphate starvation. A combination of transcriptomics and imaging analyses revealed that PPsPase1 and PECP1 display a highly dynamic expression pattern that closely mirrors the phosphate status. This temporal dynamism, combined with the wide range of induction levels, broad expression, and lack of a direct effect on Pi content and regulation, makes PPsPase1 and PECP1 useful molecular markers of the phosphate starvation response.
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Affiliation(s)
- Mohamed Hanchi
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Marie-Christine Thibaud
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Bertrand Légeret
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Keiko Kuwata
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa, Nagoya 464-8601, Japan
| | - Nathalie Pochon
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Fred Beisson
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Aiqin Cao
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana 47907
| | - Laura Cuyas
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Pascale David
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Peter Doerner
- School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, United Kingdom
| | - Ali Ferjani
- Department of Biology, Tokyo Gakugei University, Koganei-shi, Tokyo, Japan 184-8501
| | - Fan Lai
- School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, United Kingdom
| | - Yonghua Li-Beisson
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Jérôme Mutterer
- Institute of Plant Molecular Biology, Centre National de la Recherche Scientifique, University of Strasbourg, 67084 Strasbourg, France
| | - Michel Philibert
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Kashchandra G Raghothama
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana 47907
| | - Corinne Rivasseau
- CEA, CNRS, INRA, Université Grenoble Alpes, Institut de Biosciences et Biotechnologies de Grenoble, UMR5168, Grenoble, France
| | - David Secco
- ARC Centre of Excellence in Plant Energy Biology, The University of Western Australia, Perth 6009 WA, Australia
| | - James Whelan
- Department of Animal, Plant, and Soil Science, School of Life Science, ARC Centre of Excellence in Plant Energy Biology, La Trobe University, Bundoora 3086, Australia
| | - Laurent Nussaume
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
| | - Hélène Javot
- Commissariat à l'Energie Atomique et aux Energies Alternatives, CNRS, Aix Marseille Université, UMR7265, Institut de Biosciences et Biotechnologies, Cadarache, 13108 St Paul Lez Durance, France
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1320
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Detroux T, Noël JP, Virgin LN, Kerschen G. Experimental study of isolas in nonlinear systems featuring modal interactions. PLoS One 2018; 13:e0194452. [PMID: 29584758 PMCID: PMC5870979 DOI: 10.1371/journal.pone.0194452] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 03/02/2018] [Indexed: 11/24/2022] Open
Abstract
The objective of the present paper is to provide experimental evidence of isolated resonances in the frequency response of nonlinear mechanical systems. More specifically, this work explores the presence of isolas, which are periodic solutions detached from the main frequency response, in the case of a nonlinear set-up consisting of two masses sliding on a horizontal guide. A careful experimental investigation of isolas is carried out using responses to swept-sine and stepped-sine excitations. The experimental findings are validated with advanced numerical simulations combining nonlinear modal analysis and bifurcation monitoring. In particular, the interactions between two nonlinear normal modes are shown to be responsible for the creation of the isolas.
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Affiliation(s)
- Thibaut Detroux
- Space Structures and Systems Laboratory, Aerospace and Mechanical Engineering Department, University of Liège, Liège, Belgium
- * E-mail:
| | - Jean-Philippe Noël
- Space Structures and Systems Laboratory, Aerospace and Mechanical Engineering Department, University of Liège, Liège, Belgium
| | - Lawrence N. Virgin
- Nonlinear Dynamics Group, Pratt School of Engineering, Duke University, Durham, North Carolina, United States of America
| | - Gaëtan Kerschen
- Space Structures and Systems Laboratory, Aerospace and Mechanical Engineering Department, University of Liège, Liège, Belgium
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1321
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Wei FF, Trenson S, Monney P, Yang WY, Pruijm M, Zhang ZY, Bouatou Y, Huang QF, Ponte B, Martin PY, Thijs L, Kuznetsova T, Allegaert K, Janssens S, Vermeer C, Verhamme P, Burnier M, Bochud M, Ehret G, Staessen JA. Epidemiological and histological findings implicate matrix Gla protein in diastolic left ventricular dysfunction. PLoS One 2018; 13:e0193967. [PMID: 29529056 PMCID: PMC5846787 DOI: 10.1371/journal.pone.0193967] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 02/22/2018] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVES A novel paradigm of diastolic left ventricular (LV) dysfunction proposes involvement of the cardiac microvasculature. Vitamin K dependent matrix Gla protein (MGP) plays a role in preserving microcirculatory integrity. We hypothesized that LV filling pressure-a measure of diastolic LV dysfunction-increases with higher plasma level of inactive desphospho-uncarboxylated MGP (dp-ucMGP). We also studied the distribution of active and inactive MGP in human myocardium. METHODS We measured echocardiographic diastolic LV function and plasma dp-ucMGP (ELISA) in 668 Flemish and for replication in 386 Swiss. RESULTS Among Flemish and Swiss, E/e' (6.78 vs. 6.73) and dp-ucMGP (3.94 μg/L vs. 4.20 μg/L) were similarly distributed. In multivariable-adjusted models, for each doubling of dp-ucMGP, E/e' increased by 0.26, 0.33 and 0.31 in Flemish, Swiss and both cohorts combined (P≤0.026); the odds ratios for having E/e' ≥ 8.5 were 1.99, 3.29 and 2.36, respectively (P≤0.017). Cardiac biopsies from patients with ischemic or dilated cardiomyopathy and healthy hearts (n = 4 for each) were stained with conformation-specific MGP antibodies. In diseased compared with normal hearts, uncarboxylated inactive MGP was more prevalent (P≤0.004) in the perivascular matrix and interstitium (204.4 vs. 8.6 μm2 per field) and phosphorylated active MGP in and around capillaries and interstitial cells (31.3 vs. 6.6 number of positive capillaries and cells per field). CONCLUSIONS Our study supports a role of activated MGP in maintaining myocardial integrity and diastolic LV performance and can potentially be translated into new strategies for managing diastolic LV dysfunction and preventing its progression to heart failure.
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Affiliation(s)
- Fang-Fei Wei
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Sander Trenson
- Division of Cardiology, University Hospitals Leuven, Leuven, Belgium
| | - Pierre Monney
- Department of Cardiology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Wen-Yi Yang
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Menno Pruijm
- Department of Nephrology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Zhen-Yu Zhang
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Yassine Bouatou
- Department of Pathology, Academisch Medisch Centrum, Universiteit van Amsterdam, Amsterdam, The Netherlands
| | - Qi-Fang Huang
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Belen Ponte
- Department of Nephrology, University Hospital of Geneva, Geneva, Switzerland
| | - Pierre-Yves Martin
- Department of Nephrology, University Hospital of Geneva, Geneva, Switzerland
| | - Lutgarde Thijs
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Tatiana Kuznetsova
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Karel Allegaert
- Research Unit Organ Systems, Department of Development and Regeneration, University of Leuven, Leuven, Belgium
- Department of Pediatric Surgery, Erasmus Medical Center, Sophia Children’s Hospital, Rotterdam, The Netherlands
| | - Stefan Janssens
- Division of Cardiology, University Hospitals Leuven, Leuven, Belgium
| | - Cees Vermeer
- R&D Group VitaK, Maastricht University, Maastricht, The Netherlands
| | - Peter Verhamme
- Research Unit Molecular and Vascular Biology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Michel Burnier
- Department of Nephrology, University Hospital of Lausanne, Lausanne, Switzerland
| | - Murielle Bochud
- Division of Chronic Disease, Institute of Social and Preventive Medicine, University Hospital of Lausanne, Lausanne, Switzerland
| | - Georg Ehret
- Department of Cardiology, University Hospital of Geneva, Geneva, Switzerland
- Center for Complex Disease Genomics, McKusick-Nathans Institute of Genetic Medicine, John Hopkins University, Baltimore, Maryland, United States of America
| | - Jan A. Staessen
- Studies Coordinating Centre, Research Unit Hypertension and Cardiovascular Epidemiology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
- R&D Group VitaK, Maastricht University, Maastricht, The Netherlands
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1322
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Smart OS, Horský V, Gore S, Svobodová Vařeková R, Bendová V, Kleywegt GJ, Velankar S. Worldwide Protein Data Bank validation information: usage and trends. Acta Crystallogr D Struct Biol 2018; 74:237-244. [PMID: 29533231 PMCID: PMC5947764 DOI: 10.1107/s2059798318003303] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 02/26/2018] [Indexed: 11/10/2022] Open
Abstract
Realising the importance of assessing the quality of the biomolecular structures deposited in the Protein Data Bank (PDB), the Worldwide Protein Data Bank (wwPDB) partners established Validation Task Forces to obtain advice on the methods and standards to be used to validate structures determined by X-ray crystallography, nuclear magnetic resonance spectroscopy and three-dimensional electron cryo-microscopy. The resulting wwPDB validation pipeline is an integral part of the wwPDB OneDep deposition, biocuration and validation system. The wwPDB Validation Service webserver (https://validate.wwpdb.org) can be used to perform checks prior to deposition. Here, it is shown how validation metrics can be combined to produce an overall score that allows the ranking of macromolecular structures and domains in search results. The ValTrendsDB database provides users with a convenient way to access and analyse validation information and other properties of X-ray crystal structures in the PDB, including investigating trends in and correlations between different structure properties and validation metrics.
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Affiliation(s)
- Oliver S Smart
- Protein Data Bank in Europe, European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, England
| | - Vladimír Horský
- Faculty of Science, National Centre for Biomolecular Research, Kamenice 5, 625 00 Brno, Czech Republic
| | - Swanand Gore
- Protein Data Bank in Europe, European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, England
| | - Radka Svobodová Vařeková
- CEITEC - Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Veronika Bendová
- Faculty of Science, National Centre for Biomolecular Research, Kamenice 5, 625 00 Brno, Czech Republic
| | - Gerard J Kleywegt
- Protein Data Bank in Europe, European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, England
| | - Sameer Velankar
- Protein Data Bank in Europe, European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, England
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1323
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Smart OS, Horský V, Gore S, Svobodová Vařeková R, Bendová V, Kleywegt GJ, Velankar S. Validation of ligands in macromolecular structures determined by X-ray crystallography. Acta Crystallogr D Struct Biol 2018; 74:228-236. [PMID: 29533230 PMCID: PMC5947763 DOI: 10.1107/s2059798318002541] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 02/12/2018] [Indexed: 01/19/2023] Open
Abstract
Crystallographic studies of ligands bound to biological macromolecules (proteins and nucleic acids) play a crucial role in structure-guided drug discovery and design, and also provide atomic level insights into the physical chemistry of complex formation between macromolecules and ligands. The quality with which small-molecule ligands have been modelled in Protein Data Bank (PDB) entries has been, and continues to be, a matter of concern for many investigators. Correctly interpreting whether electron density found in a binding site is compatible with the soaked or co-crystallized ligand or represents water or buffer molecules is often far from trivial. The Worldwide PDB validation report (VR) provides a mechanism to highlight any major issues concerning the quality of the data and the model at the time of deposition and annotation, so the depositors can fix issues, resulting in improved data quality. The ligand-validation methods used in the generation of the current VRs are described in detail, including an examination of the metrics to assess both geometry and electron-density fit. It is found that the LLDF score currently used to identify ligand electron-density fit outliers can give misleading results and that better ligand-validation metrics are required.
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Affiliation(s)
- Oliver S. Smart
- Protein Data Bank in Europe, European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, England
| | - Vladimír Horský
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- CEITEC – Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Swanand Gore
- Protein Data Bank in Europe, European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, England
| | - Radka Svobodová Vařeková
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- CEITEC – Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Veronika Bendová
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- CEITEC – Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
- Institute of Mathematics and Statistics, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Gerard J. Kleywegt
- Protein Data Bank in Europe, European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, England
| | - Sameer Velankar
- Protein Data Bank in Europe, European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge CB10 1SD, England
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1324
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Balatoni T, Mohos A, Papp E, Sebestyén T, Liszkay G, Oláh J, Varga A, Lengyel Z, Emri G, Gaudi I, Ladányi A. Tumor-infiltrating immune cells as potential biomarkers predicting response to treatment and survival in patients with metastatic melanoma receiving ipilimumab therapy. Cancer Immunol Immunother 2018; 67:141-151. [PMID: 28988380 PMCID: PMC11028067 DOI: 10.1007/s00262-017-2072-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 09/27/2017] [Indexed: 12/20/2022]
Abstract
Monoclonal antibodies targeting immune checkpoints are gaining ground in the treatment of melanoma and other cancers, and considerable effort is made to identify biomarkers predicting the efficacy of these therapies. Our retrospective study was performed on surgical tissue samples (52 lymph nodes and 34 cutaneous/subcutaneous metastases) from 30 patients with metastatic melanoma treated with ipilimumab. Using a panel of 11 antibodies against different immune cell types, intratumoral immune cell densities were determined and evaluated in relation to response to ipilimumab treatment and disease outcome. For most markers studied, median immune cell densities were at least two times higher in lymph node metastases compared to skin/subcutaneous ones; therefore, the prognostic and predictive associations of immune cell infiltration were evaluated separately in the two groups of metastases as well as in all samples as a whole. Higher prevalence of several immune cell types was seen in lymph node metastases of the responders compared to non-responders, particularly FOXP3+ cells and CD8+ T lymphocytes. In subcutaneous or cutaneous metastases, on the other hand, significant difference could be observed only in the case of CD16 and CD68. Associations of labeled cell densities with survival were also found for most cell types studied in nodal metastases, and for CD16+ and CD68+ cells in skin/s.c. metastatic cases. Our results corroborate the previous findings suggesting an association between an immunologically active tumor microenvironment and response to ipilimumab treatment, and propose new potential biomarkers for predicting treatment efficacy and disease outcome.
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Affiliation(s)
- Tímea Balatoni
- Department of Oncodermatology, National Institute of Oncology, Budapest, Hungary
| | - Anita Mohos
- 1st Institute of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Eszter Papp
- Department of Surgical and Molecular Pathology, National Institute of Oncology, 7-9. Ráth György u., Budapest, H-1122, Hungary
| | - Tímea Sebestyén
- Department of Pathology, St. John's Hospital, Budapest, Hungary
| | - Gabriella Liszkay
- Department of Oncodermatology, National Institute of Oncology, Budapest, Hungary
| | - Judit Oláh
- Department of Dermatology and Allergology, Albert Szent-Györgyi Medical Center, University of Szeged, Szeged, Hungary
| | - Anita Varga
- Department of Dermatology and Allergology, Albert Szent-Györgyi Medical Center, University of Szeged, Szeged, Hungary
| | - Zsuzsanna Lengyel
- Department of Dermatology, Venerology and Oncodermatology, University of Pécs, Pécs, Hungary
| | - Gabriella Emri
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - István Gaudi
- National Korányi Institute of TB and Pulmonology, Budapest, Hungary
| | - Andrea Ladányi
- Department of Surgical and Molecular Pathology, National Institute of Oncology, 7-9. Ráth György u., Budapest, H-1122, Hungary.
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1325
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Schröter M, Kraemer R, Ceauşu S, Rusch GM. Incorporating threat in hotspots and coldspots of biodiversity and ecosystem services. Ambio 2017; 46:756-768. [PMID: 28503701 PMCID: PMC5622886 DOI: 10.1007/s13280-017-0922-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 04/21/2017] [Accepted: 04/25/2017] [Indexed: 05/23/2023]
Abstract
Spatial prioritization could help target conservation actions directed to maintain both biodiversity and ecosystem services. We delineate hotspots and coldspots of two biodiversity conservation features and five regulating and cultural services by incorporating an indicator of 'threat', i.e. timber harvest profitability for forest areas in Telemark (Norway). We found hotspots, where high values of biodiversity, ecosystem services and threat coincide, ranging from 0.1 to 7.1% of the area, depending on varying threshold levels. Targeting of these areas for conservation follows reactive conservation approaches. In coldspots, high biodiversity and ecosystem service values coincide with low levels of threat, and cover 0.1-3.4% of the forest area. These areas might serve proactive conservation approaches at lower opportunity cost (foregone timber harvest profits). We conclude that a combination of indicators of biodiversity, ecosystem services and potential threat is an appropriate approach for spatial prioritization of proactive and reactive conservation strategies.
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Affiliation(s)
- Matthias Schröter
- Department of Ecosystem Services, UFZ – Helmholtz Centre for Environmental Research, Permoserstr. 15, 04318 Leipzig, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany
| | - Roland Kraemer
- Department of Ecosystem Services, UFZ – Helmholtz Centre for Environmental Research, Permoserstr. 15, 04318 Leipzig, Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany
| | - Silvia Ceauşu
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, 04103 Leipzig, Germany
- Institute of Biology, Martin Luther University Halle-Wittenberg, Am Kirchtor 1, 06108 Halle (Saale), Germany
| | - Graciela M. Rusch
- Norwegian Institute for Nature Research (NINA), PO Box 5685, Sluppen, 7485 Trondheim, Norway
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1326
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Oesterle S, Roberts TM, Widmer LA, Mustafa H, Panke S, Billerbeck S. Sequence-based prediction of permissive stretches for internal protein tagging and knockdown. BMC Biol 2017; 15:100. [PMID: 29084520 PMCID: PMC5661948 DOI: 10.1186/s12915-017-0440-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 10/11/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Internal tagging of proteins by inserting small functional peptides into surface accessible permissive sites has proven to be an indispensable tool for basic and applied science. Permissive sites are typically identified by transposon mutagenesis on a case-by-case basis, limiting scalability and their exploitation as a system-wide protein engineering tool. METHODS We developed an apporach for predicting permissive stretches (PSs) in proteins based on the identification of length-variable regions (regions containing indels) in homologous proteins. RESULTS We verify that a protein's primary structure information alone is sufficient to identify PSs. Identified PSs are predicted to be predominantly surface accessible; hence, the position of inserted peptides is likely suitable for diverse applications. We demonstrate the viability of this approach by inserting a Tobacco etch virus protease recognition site (TEV-tag) into several PSs in a wide range of proteins, from small monomeric enzymes (adenylate kinase) to large multi-subunit molecular machines (ATP synthase) and verify their functionality after insertion. We apply this method to engineer conditional protein knockdowns directly in the Escherichia coli chromosome and generate a cell-free platform with enhanced nucleotide stability. CONCLUSIONS Functional internally tagged proteins can be rationally designed and directly chromosomally implemented. Critical for the successful design of protein knockdowns was the incorporation of surface accessibility and secondary structure predictions, as well as the design of an improved TEV-tag that enables efficient hydrolysis when inserted into the middle of a protein. This versatile and portable approach can likely be adapted for other applications, and broadly adopted. We provide guidelines for the design of internally tagged proteins in order to empower scientists with little or no protein engineering expertise to internally tag their target proteins.
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Affiliation(s)
- Sabine Oesterle
- Department of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, 4058, Basel, Switzerland
| | - Tania Michelle Roberts
- Department of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, 4058, Basel, Switzerland
| | - Lukas Andreas Widmer
- Department of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, 4058, Basel, Switzerland
- Swiss Institute of Bioinformatics, Mattenstrasse 26, 4058, Basel, Switzerland
- Life Science Zürich Graduate School in Systems Biology, Zürich, Switzerland
| | - Harun Mustafa
- Department of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, 4058, Basel, Switzerland
- Department of Computer Science, ETH Zürich, Zürich, Switzerland
| | - Sven Panke
- Department of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, 4058, Basel, Switzerland
| | - Sonja Billerbeck
- Department of Biosystems Science and Engineering, ETH Zürich, Mattenstrasse 26, 4058, Basel, Switzerland.
- Present address: Chemistry Department, Columbia University, 550 West 120th Street, New York, NY, 10027, USA.
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1327
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Fründt O, Schulz R, Schöttle D, Cheng B, Thomalla G, Braaß H, Ganos C, David N, Peiker I, Engel AK, Bäumer T, Münchau A. White Matter Microstructure of the Human Mirror Neuron System is Related to Symptom Severity in Adults with Autism. J Autism Dev Disord 2017; 48:417-429. [PMID: 29027066 DOI: 10.1007/s10803-017-3332-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Mirror neuron system (MNS) dysfunctions might underlie deficits in autism spectrum disorders (ASD). Diffusion tensor imaging based probabilistic tractography was conducted in 15 adult ASD patients and 13 matched, healthy controls. Fractional anisotropy (FA) was quantified to assess group differences in tract-related white matter microstructure of both the classical MNS route (mediating "emulation") and the alternative temporo-frontal route (mediating "mimicry"). Multiple linear regression was used to investigate structure-function relationships between MNS connections and ASD symptom severity. There were no significant group differences in tract-related FA indicating an intact classical MNS in ASD. Direct temporo-frontal connections could not be reconstructed challengeing the concept of multiple routes for imitation. Tract-related FA of right-hemispheric parieto-frontal connections was negatively related to autism symptom severity.
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Affiliation(s)
- Odette Fründt
- Department of Neurology, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246, Hamburg, Germany.
| | - Robert Schulz
- Department of Neurology, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246, Hamburg, Germany
| | - Daniel Schöttle
- Department of Psychiatry, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Bastian Cheng
- Department of Neurology, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246, Hamburg, Germany
| | - Götz Thomalla
- Department of Neurology, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246, Hamburg, Germany
| | - Hanna Braaß
- Department of Neurology, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246, Hamburg, Germany
| | - Christos Ganos
- Department of Neurology, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246, Hamburg, Germany
| | - Nicole David
- Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Ina Peiker
- Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Andreas K Engel
- Department of Neurophysiology and Pathophysiology, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - Tobias Bäumer
- Department of Neurology, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246, Hamburg, Germany
- Department of Pediatric and Adult Movement Disorders and Neuropsychiatry, Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
| | - Alexander Münchau
- Department of Neurology, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246, Hamburg, Germany
- Department of Pediatric and Adult Movement Disorders and Neuropsychiatry, Institute of Neurogenetics, University of Lübeck, Lübeck, Germany
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1328
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Purse BV, Masante D, Golding N, Pigott D, Day JC, Ibañez-Bernal S, Kolb M, Jones L. How will climate change pathways and mitigation options alter incidence of vector-borne diseases? A framework for leishmaniasis in South and Meso-America. PLoS One 2017; 12:e0183583. [PMID: 29020041 PMCID: PMC5636069 DOI: 10.1371/journal.pone.0183583] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 08/18/2017] [Indexed: 12/26/2022] Open
Abstract
The enormous global burden of vector-borne diseases disproportionately affects poor people in tropical, developing countries. Changes in vector-borne disease impacts are often linked to human modification of ecosystems as well as climate change. For tropical ecosystems, the health impacts of future environmental and developmental policy depend on how vector-borne disease risks trade off against other ecosystem services across heterogeneous landscapes. By linking future socio-economic and climate change pathways to dynamic land use models, this study is amongst the first to analyse and project impacts of both land use and climate change on continental-scale patterns in vector-borne diseases. Models were developed for cutaneous and visceral leishmaniasis in the Americas-ecologically complex sand fly borne infections linked to tropical forests and diverse wild and domestic mammal hosts. Both diseases were hypothesised to increase with available interface habitat between forest and agricultural or domestic habitats and with mammal biodiversity. However, landscape edge metrics were not important as predictors of leishmaniasis. Models including mammal richness were similar in accuracy and predicted disease extent to models containing only climate and land use predictors. Overall, climatic factors explained 80% and land use factors only 20% of the variance in past disease patterns. Both diseases, but especially cutaneous leishmaniasis, were associated with low seasonality in temperature and precipitation. Since such seasonality increases under future climate change, particularly under strong climate forcing, both diseases were predicted to contract in geographical extent to 2050, with cutaneous leishmaniasis contracting by between 35% and 50%. Whilst visceral leishmaniasis contracted slightly more under strong than weak management for carbon, biodiversity and ecosystem services, future cutaneous leishmaniasis extent was relatively insensitive to future alternative socio-economic pathways. Models parameterised at narrower geographical scales may be more sensitive to land use pattern and project more substantial changes in disease extent under future alternative socio-economic pathways.
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Affiliation(s)
- Bethan V. Purse
- NERC Centre for Ecology and Hydrology,Crowmarsh Gifford, Oxfordshire, United Kingdom
| | - Dario Masante
- NERC Centre for Ecology and Hydrology, Environment Centre Wales, Bangor, United Kingdom
| | - Nicholas Golding
- School of BioSciences, University of Melbourne, Victoria, Australia
| | - David Pigott
- Institute for Health Metrics and Evaluation, University of Washington, Seattle, Washington, United States of America
| | - John C. Day
- NERC Centre for Ecology and Hydrology,Crowmarsh Gifford, Oxfordshire, United Kingdom
| | - Sergio Ibañez-Bernal
- Instituto de Ecología, A.C. (INECOL), Red Ambiente y Sustentabilidad, Xalapa, Veracruz, Mexico
| | - Melanie Kolb
- Institute of Geography, National Autonomous University of Mexico, Mexico City, Mexico
| | - Laurence Jones
- NERC Centre for Ecology and Hydrology, Environment Centre Wales, Bangor, United Kingdom
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Gregson S, Mugurungi O, Eaton J, Takaruza A, Rhead R, Maswera R, Mutsvangwa J, Mayini J, Skovdal M, Schaefer R, Hallett T, Sherr L, Munyati S, Mason P, Campbell C, Garnett GP, Nyamukapa CA. Documenting and explaining the HIV decline in east Zimbabwe: the Manicaland General Population Cohort. BMJ Open 2017; 7:e015898. [PMID: 28988165 PMCID: PMC5639985 DOI: 10.1136/bmjopen-2017-015898] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 04/10/2017] [Accepted: 04/27/2017] [Indexed: 01/20/2023] Open
Abstract
PURPOSE The Manicaland cohort was established to provide robust scientific data on HIV prevalence and incidence, patterns of sexual risk behaviour and the demographic impact of HIV in a sub-Saharan African population subject to a generalised HIV epidemic. The aims were later broadened to include provision of data on the coverage and effectiveness of national HIV control programmes including antiretroviral therapy (ART). PARTICIPANTS General population open cohort located in 12 sites in Manicaland, east Zimbabwe, representing 4 major socioeconomic strata (small towns, agricultural estates, roadside settlements and subsistence farming areas). 9,109 of 11,453 (79.5%) eligible adults (men 17-54 years; women 15-44 years) were recruited in a phased household census between July 1998 and January 2000. Five rounds of follow-up of the prospective household census and the open cohort were conducted at 2-year or 3-year intervals between July 2001 and November 2013. Follow-up rates among surviving residents ranged between 77.0% (over 3 years) and 96.4% (2 years). FINDINGS TO DATE HIV prevalence was 25.1% at baseline and had a substantial demographic impact with 10-fold higher mortality in HIV-infected adults than in uninfected adults and a reduction in the growth rate in the worst affected areas (towns) from 2.9% to 1.0%pa. HIV infection rates have been highest in young adults with earlier commencement of sexual activity and in those with older sexual partners and larger numbers of lifetime partners. HIV prevalence has since fallen to 15.8% and HIV incidence has also declined from 2.1% (1998-2003) to 0.63% (2009-2013) largely due to reduced sexual risk behaviour. HIV-associated mortality fell substantially after 2009 with increased availability of ART. FUTURE PLANS We plan to extend the cohort to measure the effects on the epidemic of current and future HIV prevention and treatment programmes. Proposals for access to these data and for collaboration are welcome.
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Affiliation(s)
- Simon Gregson
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | - Owen Mugurungi
- Zimbabwe Ministry of Health and Child Care, Harare, Zimbabwe
| | - Jeffrey Eaton
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
| | - Albert Takaruza
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | - Rebecca Rhead
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
| | | | | | - Justin Mayini
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | | | - Robin Schaefer
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
| | - Timothy Hallett
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
| | | | - Shungu Munyati
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | - Peter Mason
- Biomedical Research and Training Institute, Harare, Zimbabwe
| | | | - Geoffrey P Garnett
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
| | - Constance Anesu Nyamukapa
- Department of Infectious Disease Epidemiology, Imperial College London, London, UK
- Biomedical Research and Training Institute, Harare, Zimbabwe
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1330
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Imamura F, Sharp SJ, Koulman A, Schulze MB, Kröger J, Griffin JL, Huerta JM, Guevara M, Sluijs I, Agudo A, Ardanaz E, Balkau B, Boeing H, Chajes V, Dahm CC, Dow C, Fagherazzi G, Feskens EJM, Franks PW, Gavrila D, Gunter M, Kaaks R, Key TJ, Khaw KT, Kühn T, Melander O, Molina-Portillo E, Nilsson PM, Olsen A, Overvad K, Palli D, Panico S, Rolandsson O, Sieri S, Sacerdote C, Slimani N, Spijkerman AMW, Tjønneland A, Tumino R, van der Schouw YT, Langenberg C, Riboli E, Forouhi NG, Wareham NJ. A combination of plasma phospholipid fatty acids and its association with incidence of type 2 diabetes: The EPIC-InterAct case-cohort study. PLoS Med 2017; 14:e1002409. [PMID: 29020051 PMCID: PMC5636062 DOI: 10.1371/journal.pmed.1002409] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 09/14/2017] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Combinations of multiple fatty acids may influence cardiometabolic risk more than single fatty acids. The association of a combination of fatty acids with incident type 2 diabetes (T2D) has not been evaluated. METHODS AND FINDINGS We measured plasma phospholipid fatty acids by gas chromatography in 27,296 adults, including 12,132 incident cases of T2D, over the follow-up period between baseline (1991-1998) and 31 December 2007 in 8 European countries in EPIC-InterAct, a nested case-cohort study. The first principal component derived by principal component analysis of 27 individual fatty acids (mole percentage) was the main exposure (subsequently called the fatty acid pattern score [FA-pattern score]). The FA-pattern score was partly characterised by high concentrations of linoleic acid, stearic acid, odd-chain fatty acids, and very-long-chain saturated fatty acids and low concentrations of γ-linolenic acid, palmitic acid, and long-chain monounsaturated fatty acids, and it explained 16.1% of the overall variability of the 27 fatty acids. Based on country-specific Prentice-weighted Cox regression and random-effects meta-analysis, the FA-pattern score was associated with lower incident T2D. Comparing the top to the bottom fifth of the score, the hazard ratio of incident T2D was 0.23 (95% CI 0.19-0.29) adjusted for potential confounders and 0.37 (95% CI 0.27-0.50) further adjusted for metabolic risk factors. The association changed little after adjustment for individual fatty acids or fatty acid subclasses. In cross-sectional analyses relating the FA-pattern score to metabolic, genetic, and dietary factors, the FA-pattern score was inversely associated with adiposity, triglycerides, liver enzymes, C-reactive protein, a genetic score representing insulin resistance, and dietary intakes of soft drinks and alcohol and was positively associated with high-density-lipoprotein cholesterol and intakes of polyunsaturated fat, dietary fibre, and coffee (p < 0.05 each). Limitations include potential measurement error in the fatty acids and other model covariates and possible residual confounding. CONCLUSIONS A combination of individual fatty acids, characterised by high concentrations of linoleic acid, odd-chain fatty acids, and very long-chain fatty acids, was associated with lower incidence of T2D. The specific fatty acid pattern may be influenced by metabolic, genetic, and dietary factors.
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Affiliation(s)
- Fumiaki Imamura
- Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Stephen J. Sharp
- Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Albert Koulman
- National Institute for Health Research Biomedical Research Centres Core Nutritional Biomarker Laboratory, University of Cambridge, Addenbrooke’s Hospital, Cambridge, United Kingdom
- National Institute for Health Research Biomedical Research Centres Core Metabolomics and Lipidomics Laboratory, University of Cambridge, Addenbrooke’s Hospital, Cambridge, United Kingdom
- Medical Research Council Epidemiology Unit Elsie Widdowson Laboratory, Cambridge, United Kingdom
| | - Matthias B. Schulze
- Department of Molecular Epidemiology, German Institute of Human Nutrition, Potsdam, Germany
| | - Janine Kröger
- Department of Molecular Epidemiology, German Institute of Human Nutrition, Potsdam, Germany
| | - Julian L. Griffin
- Medical Research Council Epidemiology Unit Elsie Widdowson Laboratory, Cambridge, United Kingdom
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
| | - José M. Huerta
- Department of Epidemiology, Consejería de Sanidad y Política Social, CIBER de Epidemiología y Salud Pública, Murcia, Spain
- CIBER Epidemiología y Salud Pública, Madrid, Spain
| | - Marcela Guevara
- CIBER Epidemiología y Salud Pública, Madrid, Spain
- Navarre Public Health Institute, Pamplona, Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
| | - Ivonne Sluijs
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Antonio Agudo
- Unit of Nutrition, Environment and Cancer, Cancer Epidemiology Research Program, Catalan Institute of Oncology, Barcelona, Spain
| | - Eva Ardanaz
- CIBER Epidemiología y Salud Pública, Madrid, Spain
- Navarre Public Health Institute, Pamplona, Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
| | - Beverley Balkau
- Center for Research in Epidemiology and Population Health, Inserm U1018, Paris-Sud University, University Versailles Saint-Quentin-en-Yvelines, Paris Saclay University, Villejuif, France
| | - Heiner Boeing
- Department of Molecular Epidemiology, German Institute of Human Nutrition, Potsdam, Germany
| | | | - Christina C. Dahm
- Section for Epidemiology, Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Courtney Dow
- Center for Research in Epidemiology and Population Health, Inserm U1018, Paris-Sud University, University Versailles Saint-Quentin-en-Yvelines, Paris Saclay University, Villejuif, France
- Gustave Roussy Institute, Villejuif, France
| | - Guy Fagherazzi
- Center for Research in Epidemiology and Population Health, Inserm U1018, Paris-Sud University, University Versailles Saint-Quentin-en-Yvelines, Paris Saclay University, Villejuif, France
- Gustave Roussy Institute, Villejuif, France
| | - Edith J. M. Feskens
- Department of Agrotechnology and Food Sciences, Wageningen University, Wageningen, Netherlands
| | - Paul W. Franks
- Family Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
- Department of Clinical Sciences, Lund University, Skane University Hospital, Malmo, Sweden
| | - Diana Gavrila
- CIBER Epidemiología y Salud Pública, Madrid, Spain
- Department of Epidemiology, Murcia Regional Health Council, Murcia, Spain
- Murcia BioHealth Research Institute–Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Marc Gunter
- Section for Epidemiology, Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Rudolf Kaaks
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Timothy J. Key
- Cancer Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - Kay-Tee Khaw
- Department of Public Health and Primary Care, University of Cambridge School of Clinical Medicine, Cambridge, United Kingdom
| | - Tilman Kühn
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Olle Melander
- Department of Clinical Sciences, Lund University, Skane University Hospital, Malmo, Sweden
| | - Elena Molina-Portillo
- CIBER Epidemiología y Salud Pública, Madrid, Spain
- Escuela Andaluza de Salud Pública, Instituto de Investigación Biosanitaria ibs.GRANADA, Hospitales Universitarios de Granada/Universidad de Granada, Granada, Spain
| | - Peter M. Nilsson
- Department of Public Health and Primary Care, University of Cambridge School of Clinical Medicine, Cambridge, United Kingdom
| | - Anja Olsen
- Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Kim Overvad
- Section for Epidemiology, Department of Public Health, Aarhus University, Aarhus, Denmark
- Department of Cardiology, Aalborg University Hospital, Aarhus, Denmark
| | - Domenico Palli
- Cancer Risk Factors and Lifestyle Epidemiology Unit, Cancer Research and Prevention Institute, Florence, Italy
| | - Salvatore Panico
- Dipartimento di Medicina Clinica e Chirurgia, Università degli Studi di Federico II University, Naples, Italy
| | - Olov Rolandsson
- Family Medicine, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Sabina Sieri
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Carlotta Sacerdote
- Unit of Cancer Epidemiology, Città della Salute e della Scienza Hospital–University of Turin and Center for Cancer Prevention, Torino, Italy
| | - Nadia Slimani
- International Agency for Research on Cancer, Lyon, France
| | | | | | - Rosario Tumino
- Affiliation Cancer Registry, Department of Prevention, Azienda Sanitaria Provinciale di Ragusa, Ragusa, Italy
| | - Yvonne T. van der Schouw
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Claudia Langenberg
- Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Elio Riboli
- School of Public Health, Imperial College London, London, United Kingdom
| | - Nita G. Forouhi
- Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Nick J. Wareham
- Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
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Twine R, Hundt GL, Kahn K. The 'experimental public' in longitudinal health research: views of local leaders and service providers in rural South Africa. Glob Health Res Policy 2017; 2:26. [PMID: 29202094 PMCID: PMC5683227 DOI: 10.1186/s41256-017-0046-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 06/28/2017] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND The concept of 'experimental public' has been recently applied to publics involved in clinical trials. This term could also be applied to publics involved in longitudinal research such as health and demographic surveillance systems. The ethics of practice and public engagement with these experimental publics are of key importance and include issues of informed consent, confidentiality, collection of body tissue samples and fair local benefit. METHODS Individual (n = 11) and focus group (n = 5) qualitative semi-structured interviews were conducted with 56 local leaders and service providers regarding their views about research activities in a longitudinal health research study site run by the MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt) in rural South Africa. Deductive and inductive thematic analysis was undertaken using NVivo software to identify the emergent themes. RESULTS There was an understanding of the usefulness of collecting demographic data, but reasons for gathering other contextual data such as on food security, as well as the reasons for collection of blood was less clear. While appreciation was expressed for feedback of individual results such as blood pressure levels during home-based data collection, there were requests for more results from biomarkers, and for these to be given at home, rather than at the clinic. There were reports of indirect refusals, and offers by leaders to assist in reducing refusal rates. There were concerns about confidentiality, especially in the publication of results. Some leaders would have liked to receive more individual level data for planning of services, although they understood this would breach confidentiality. Service providers were concerned about the withdrawal of some services post intervention trials. CONCLUSIONS This experimental public has, over time, developed a nuanced understanding of the reasons for research and the procedures undertaken. Discussions concerning fair benefit ranged from requests for more individual clinically-relevant results for participants, to understanding how research results could assist in planning of public health services at local and national levels. The concerns illustrate the complexity of the ethics of practice which has implications for policy, practice and governance for those working in longitudinal health research sites globally.
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Affiliation(s)
- Rhian Twine
- MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt), School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Gillian Lewando Hundt
- MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt), School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- Division of Health Sciences, Warwick Medical School, University of Warwick, Coventry, UK
| | - Kathleen Kahn
- MRC/Wits Rural Public Health and Health Transitions Research Unit (Agincourt), School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
- INDEPTH Network, Accra, Ghana
- Epidemiology and Global Health Unit, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
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1332
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Castro M, Falvello LR, Forcén-Vázquez E, Guerra P, Al-Kenany NA, Martínez G, Tomás M. A phase transition caught in mid-course: independent and concomitant analyses of the monoclinic and triclinic structures of ( nBu 4N)[Co(orotate) 2(bipy)]·3H 2O. Acta Crystallogr C Struct Chem 2017; 73:731-742. [PMID: 28872072 PMCID: PMC5601254 DOI: 10.1107/s2053229617010841] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 07/24/2017] [Indexed: 11/10/2022] Open
Abstract
The preparation and characterization of the nBu4N+ salts of two bis-orotate(2-) complexes of cobalt, namely bis(tetra-n-butylammonium) diaquabis(2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-ide-6-carboxylato-κ2N1,O6)cobalt(II) 1.8-hydrate, (C16H36N)2[Co(C5H2N2O4)2(H2O)2]·1.8H2O, (1), and tetra-n-butylammonium (2,2'-bipyridine-κ2N,N')bis(2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-ide-6-carboxylato-κ2N1,O6)cobalt(III) trihydrate, (C16H36N)[Co(C5H2N2O4)2(C10H8N2)]·3H2O, (2), are reported. The CoIII complex, (2), which is monoclinic at room temperature, presents a conservative single-crystal-to-single-crystal phase transition below 200 K, producing a triclinic twin. The transition, which involves a conformational change in one of the nBu groups of the cation, is reversible and can be cycled. Both end phases have been characterized structurally and the system was also characterized structurally in a two-phase intermediate state, using single-crystal diffraction techniques, with both the monoclinic and triclinic phases present. Thermal analysis allows a rough estimate of the small energy content, viz. 0.25 kJ mol-1, for both the monoclinic-to-triclinic transformation and the reverse transition, in agreement with the nature of the structural changes involving only the nBu4N+ cation.
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Affiliation(s)
- Miguel Castro
- Departamento de Ciencia y Tecnología de Materiales y Fluidos, Escuela de Ingeniería y Arquitectura, Instituto de Ciencia de Materiales de Aragón (ICMA), University of Zaragoza–CSIC, María de Luna 3, Zaragoza E-50018, Spain
| | - Larry R. Falvello
- Department of Inorganic Chemistry and Aragón Materials Science Institute (ICMA), University of Zaragoza-CSIC, Pedro Cerbuna 12, Zaragoza E-50009, Spain
| | - Elena Forcén-Vázquez
- Department of Inorganic Chemistry and Aragón Materials Science Institute (ICMA), University of Zaragoza-CSIC, Pedro Cerbuna 12, Zaragoza E-50009, Spain
| | - Pablo Guerra
- Department of Inorganic Chemistry and Aragón Materials Science Institute (ICMA), University of Zaragoza-CSIC, Pedro Cerbuna 12, Zaragoza E-50009, Spain
| | - Nuha A. Al-Kenany
- Department of Inorganic Chemistry and Aragón Materials Science Institute (ICMA), University of Zaragoza-CSIC, Pedro Cerbuna 12, Zaragoza E-50009, Spain
| | - Gema Martínez
- Department of Inorganic Chemistry and Aragón Materials Science Institute (ICMA), University of Zaragoza-CSIC, Pedro Cerbuna 12, Zaragoza E-50009, Spain
| | - Milagros Tomás
- Department of Inorganic Chemistry and Instituto de Síntesis Química y Catálisis Homogenea (ISQCH), University of Zaragoza–CSIC, Pedro Cerbuna 12, Zaragoza E-50009, Spain
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1333
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Pandharipande PP, Ely EW, Arora RC, Balas MC, Boustani MA, La Calle GH, Cunningham C, Devlin JW, Elefante J, Han JH, MacLullich AM, Maldonado JR, Morandi A, Needham DM, Page VJ, Rose L, Salluh JIF, Sharshar T, Shehabi Y, Skrobik Y, Slooter AJC, Smith HAB. The intensive care delirium research agenda: a multinational, interprofessional perspective. Intensive Care Med 2017; 43:1329-1339. [PMID: 28612089 PMCID: PMC5709210 DOI: 10.1007/s00134-017-4860-7] [Citation(s) in RCA: 124] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 06/01/2017] [Indexed: 12/25/2022]
Abstract
Delirium, a prevalent organ dysfunction in critically ill patients, is independently associated with increased morbidity. This last decade has witnessed an exponential growth in delirium research in hospitalized patients, including those critically ill, and this research has highlighted that delirium needs to be better understood mechanistically to help foster research that will ultimately lead to its prevention and treatment. In this invited, evidence-based paper, a multinational and interprofessional group of clinicians and researchers from within the fields of critical care medicine, psychiatry, pediatrics, anesthesiology, geriatrics, surgery, neurology, nursing, pharmacy, and the neurosciences sought to address five questions: (1) What is the current standard of care in managing ICU delirium? (2) What have been the major recent advances in delirium research and care? (3) What are the common delirium beliefs that have been challenged by recent trials? (4) What are the remaining areas of uncertainty in delirium research? (5) What are some of the top study areas/trials to be done in the next 10 years? Herein, we briefly review the epidemiology of delirium, the current best practices for management of critically ill patients at risk for delirium or experiencing delirium, identify recent advances in our understanding of delirium as well as gaps in knowledge, and discuss research opportunities and barriers to implementation, with the goal of promoting an integrated research agenda.
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Affiliation(s)
- Pratik P Pandharipande
- Division of Anesthesiology Critical Care Medicine, Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, USA.
| | - E Wesley Ely
- Division of Pulmonary and Critical Care and Health Services Research, Vanderbilt University and VA-GRECC, Nashville, TN, USA
| | - Rakesh C Arora
- Department of Surgery, St. Boniface Hospital, University of Manitoba, Winnipeg, MB, Canada
| | - Michele C Balas
- Center of Excellence in Critical and Complex Care, College of Nursing, The Ohio State University, Columbus, OH, USA
| | - Malaz A Boustani
- Indiana University Center for Health Innovation and Implementation Science, Indianapolis, IN, USA
| | - Gabriel Heras La Calle
- International Research Project Humanizing Intensive Care (Proyecto HU-CI), Intensive Care Unit, Hospital Universitario de Torrejón, Madrid, Spain
| | - Colm Cunningham
- School of Biochemistry and Immunology, Trinity College Institute of Neuroscience, Lloyd Institute, Trinity College Dublin, Dublin, Ireland
| | - John W Devlin
- School of Pharmacy, Northeastern University, Boston, USA
- Division of Pulmonary, Critical Care and Sleep Medicine, Tufts Medical Center, Boston, MA, USA
| | - Julius Elefante
- Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, Canada
| | - Jin H Han
- Department of Emergency Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alasdair M MacLullich
- Edinburgh Delirium Research Group, Geriatric Medicine Unit, University of Edinburgh, Edinburgh, Scotland, UK
| | | | | | - Dale M Needham
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
| | | | - Louise Rose
- Sunnybrook Health Sciences Centre, Toronto, Canada
- Lawrence S. Bloomberg Faculty of Nursing, University of Toronto, Toronto, Canada
| | - Jorge I F Salluh
- Department of Critical Care, rD' OR Institute for Research and Education and Post-Graduate Program Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tarek Sharshar
- Department of Intensive Care Medicine, Raymond Poincaré Hospital, Paris, France
- Laboratory of Human Histology and Animal Models, Institut Pasteur, Paris, France
| | - Yahya Shehabi
- School of Clinical Sciences, Faculty of Medicine, Monash University and Medical Center, Melbourne, Australia
- Clinical School of Medicine, University New South Wales, Sydney, NSW, 2031, Australia
| | - Yoanna Skrobik
- Department of Medicine, McGill University, Montreal, Canada
| | - Arjen J C Slooter
- Department of Intensive Care Medicine, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Heidi A B Smith
- Division of Pediatric Cardiac Anesthesia, Department of Anesthesiology and Pediatrics, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, TN, USA
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1334
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Kovess-Masfety V, Sowa D, Keyes K, Husky M, Fermanian C, Bitfoi A, Carta MG, Koç C, Goelitz D, Lesinskiene S, Mihova Z, Otten R, Pez O. The association between car accident fatalities and children's fears: A study in seven EU countries. PLoS One 2017; 12:e0181619. [PMID: 28771500 PMCID: PMC5542599 DOI: 10.1371/journal.pone.0181619] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 07/05/2017] [Indexed: 11/18/2022] Open
Abstract
Children's fear of a car accident occurring to parents or themselves has been used as a concrete example to illustrate one of the symptoms of anxiety disorders such as separation anxiety and generalized anxiety. However, its usage across countries may be questionable where the prevalence of this specific type of injury differs. This cross-sectional study compares samples from seven diverse European countries (Bulgaria, Germany, Italy, Lithuania, Netherlands, Romania, Turkey) to see if an environmental exposure, car accident death rate per 100,000 people (country-wide from WHO data), is associated with children's self-report of car accident fears. In this study, 6-11 year-old children were surveyed by a diagnostic instrument (Dominic Interactive) about several situations and asked if they believed they were similar to a fictional child depicted in said situations. Mothers were surveyed for additional sociodemographic information. Multivariable logistic regression was used to adjust for covariates including mother's age, mother's education, single parenting, and mother's professional inactivity. We report a monotonic relationship between higher car accident death rates and the prevalence of children reporting fear of parent's or own accident. Relative to a reference of 3.9 deaths per 100,000 people, children's odds of reporting fear of parent's accident ranged from 1.99 (95% CI 1.51-2.61) times to 4.84 (95% CI 3.68-6.37) times as the risk of death by car accident increased across countries. A similar result arose from fear of child's own accident, with significant ORs ranging from 1.91 (95% CI 1.53-2.40) to 2.68 (95% CI 2.07-3.47) alongside increased death rates. Given that reporting of these fears accompanies correspondingly high accident death rates, the pertinence of using fear of car accidents as an illustration for some diagnostic item for mental disorders cross-nationally appears to be an issue.
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Affiliation(s)
- Viviane Kovess-Masfety
- EHESP Rennes, Sorbonne Paris Cité, Paris, France
- EA 4057 Université Paris Descartes, Paris, France
| | - David Sowa
- Mailman School of Public Health, Columbia University, New York, New York, United States of America
| | - Katherine Keyes
- Mailman School of Public Health, Columbia University, New York, New York, United States of America
| | - Mathilde Husky
- Université de Bordeaux EA4139, Institut Universitaire de France, Bordeaux, France
- * E-mail:
| | | | - Adina Bitfoi
- The Romanian League for Mental Health, Bucharest, Romania
| | - Mauro Giovanni Carta
- Centro di Psichiatria di Consulenza e PsicosomaticaAziendaOspedalieroUniversitaria di Cagliari, Italy
| | - Ceren Koç
- Yeniden Health and Education Society, Istanbul, Turkey
| | - Dietmar Goelitz
- Friedrich-Alexander University Erlangen-Nurenberg, Erlangen, Germany
| | - Sigita Lesinskiene
- Clinic of Psychiatry, School of Medicine, University of Vilnius, Vilnius, Lithuania
| | | | - Roy Otten
- Behavioural Science Institute, Radboud University Nijmegen, Pluryn, Research & Development, Nijmegen, The Netherlands
| | - Ondine Pez
- EHESP Rennes, Sorbonne Paris Cité, Paris, France
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1335
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Schlipf L, Oeckinghaus T, Xu K, Dasari DBR, Zappe A, de Oliveira FF, Kern B, Azarkh M, Drescher M, Ternes M, Kern K, Wrachtrup J, Finkler A. A molecular quantum spin network controlled by a single qubit. Sci Adv 2017; 3:e1701116. [PMID: 28819646 PMCID: PMC5553819 DOI: 10.1126/sciadv.1701116] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 07/12/2017] [Indexed: 05/24/2023]
Abstract
Scalable quantum technologies require an unprecedented combination of precision and complexity for designing stable structures of well-controllable quantum systems on the nanoscale. It is a challenging task to find a suitable elementary building block, of which a quantum network can be comprised in a scalable way. We present the working principle of such a basic unit, engineered using molecular chemistry, whose collective control and readout are executed using a nitrogen vacancy (NV) center in diamond. The basic unit we investigate is a synthetic polyproline with electron spins localized on attached molecular side groups separated by a few nanometers. We demonstrate the collective readout and coherent manipulation of very few (≤ 6) of these S = 1/2 electronic spin systems and access their direct dipolar coupling tensor. Our results show that it is feasible to use spin-labeled peptides as a resource for a molecular qubit-based network, while at the same time providing simple optical readout of single quantum states through NV magnetometry. This work lays the foundation for building arbitrary quantum networks using well-established chemistry methods, which has many applications ranging from mapping distances in single molecules to quantum information processing.
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Affiliation(s)
- Lukas Schlipf
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
- 3. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Thomas Oeckinghaus
- 3. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Kebiao Xu
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
- 3. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
- Chinese Academy of Sciences Key Laboratory of Microscale Magnetic Resonance and Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
| | - Durga Bhaktavatsala Rao Dasari
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
- 3. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Andrea Zappe
- 3. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | | | - Bastian Kern
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Mykhailo Azarkh
- Department of Chemistry, Zukunftskolleg, and Konstanz Research School Chemical Biology, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Malte Drescher
- Department of Chemistry, Zukunftskolleg, and Konstanz Research School Chemical Biology, Universität Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany
| | - Markus Ternes
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Klaus Kern
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
- Institut de Physique, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Jörg Wrachtrup
- Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
- 3. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Amit Finkler
- 3. Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
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1336
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Nieuwenhuis J, Hooimeijer P, van Ham M, Meeus W. Neighbourhood immigrant concentration effects on migrant and native youth's educational commitments, an enquiry into personality differences. Urban Stud 2017; 54:2285-2304. [PMID: 28781388 PMCID: PMC5519151 DOI: 10.1177/0042098016640693] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In the literature examining neighbourhood effects on educational outcomes, the socialisation mechanism is usually investigated by looking at the association between neighbourhood characteristics and educational attainment. The step in between, that adolescents actually internalise educational norms held by residents, is often assumed. We attempt to fill this gap by looking at how the internalisation of educational norms (commitments) is influenced by neighbourhoods' immigrant concentration. We investigate this process for both migrant and native youth, as both groups might be influenced differently by immigrant concentrations. To test our hypothesis we used longitudinal panel data with five waves (N = 4255), combined with between-within models which control for a large portion of potential selection bias. These models have an advantage over naïve OLS models in that they predict the effect of change in neighbourhood characteristics on change in educational commitment, and therefore offer a more dynamic approach to modelling neighbourhood effects. Our results show that living in neighbourhoods with higher proportions of immigrants increases the educational commitments of migrant youth compared to living in neighbourhoods with lower proportions. Besides, we find that adolescents with a resilient personality experience less influence of the neighbourhood context on educational commitments than do adolescents with non-resilient personalities.
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Affiliation(s)
- Jaap Nieuwenhuis
- Jaap Nieuwenhuis, Delft University of Technology, OTB - Research for the Built Environment, PO Box 5043, Delft, 2600GA, Netherlands.
| | | | - Maarten van Ham
- Delft University of Technology, Netherlands; University of St Andrews, UK
| | - Wim Meeus
- Utrecht University, Netherlands; Tilburg University, Netherlands
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1337
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Burri O, Wolf B, Seitz A, Gönczy P. TRACMIT: An effective pipeline for tracking and analyzing cells on micropatterns through mitosis. PLoS One 2017; 12:e0179752. [PMID: 28746386 PMCID: PMC5528263 DOI: 10.1371/journal.pone.0179752] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Accepted: 06/02/2017] [Indexed: 01/01/2023] Open
Abstract
The use of micropatterns has transformed investigations of dynamic biological processes by enabling the reproducible analysis of live cells using time-lapse fluorescence microscopy. With micropatterns, thousands of individual cells can be efficiently imaged in parallel, rendering the approach well suited for screening projects. Despite being powerful, such screens remain challenging in terms of data handling and analysis. Typically, only a fraction of micropatterns is occupied in a manner suitable to monitor a given phenotypic output. Moreover, the presence of dying or otherwise compromised cells complicates the analysis. Therefore, focusing strictly on relevant cells in such large time-lapse microscopy dataset poses interesting analysis challenges that are not readily met by existing software packages. This motivated us to develop an image analysis pipeline that handles all necessary image processing steps within one open-source platform to detect and analyze individual cells seeded on micropatterns through mitosis. We introduce a comprehensive image analysis pipeline running on Fiji termed TRACMIT (pipeline for TRACking and analyzing cells on micropatterns through MITosis). TRACMIT was developed to rapidly and accurately assess the orientation of the mitotic spindle during metaphase in time-lapse fluorescence microscopy of human cells expressing mCherry::histone 2B and plated on L-shaped micropatterns. This solution enables one to perform the entire analysis from the raw data, avoiding the need to save intermediate images, thereby decreasing data volume and thus reducing the data that needs to be processed. We first select micropatterns containing a single cell and then identify anaphase figures in the time-lapse recording. Next, TRACMIT tracks back in time until metaphase, when the angle of the mitotic spindle with respect to the micropattern is assessed. We designed the pipeline to allow for manual validation of selected cells with a simple user interface, and to enable analysis of cells plated on micropatterns of different shapes. For ease of use, the entire pipeline is provided as a series of Fiji/ImageJ macros, grouped into an ActionBar. In conclusion, the open source TRACMIT pipeline enables high-throughput analysis of single mitotic cells on micropatterns, thus accurately and efficiently allowing automatic determination of spindle positioning from time-lapse recordings.
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Affiliation(s)
- Olivier Burri
- Bioimaging and Optics Platform (BIOP), School of Life Sciences, Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland
| | - Benita Wolf
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland
| | - Arne Seitz
- Bioimaging and Optics Platform (BIOP), School of Life Sciences, Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland
| | - Pierre Gönczy
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland
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1338
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Waiswa P, Manzi F, Mbaruku G, Rowe AK, Marx M, Tomson G, Marchant T, Willey BA, Schellenberg J, Peterson S, Hanson C. Effects of the EQUIP quasi-experimental study testing a collaborative quality improvement approach for maternal and newborn health care in Tanzania and Uganda. Implement Sci 2017; 12:89. [PMID: 28720114 PMCID: PMC5516352 DOI: 10.1186/s13012-017-0604-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 05/30/2017] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Quality improvement is a recommended strategy to improve implementation levels for evidence-based essential interventions, but experience of and evidence for its effects in low-resource settings are limited. We hypothesised that a systemic and collaborative quality improvement approach covering district, facility and community levels, supported by report cards generated through continuous household and health facility surveys, could improve the implementation levels and have a measurable population-level impact on coverage and quality of essential services. METHODS Collaborative quality improvement teams tested self-identified strategies (change ideas) to support the implementation of essential maternal and newborn interventions recommended by the World Health Organization. In Tanzania and Uganda, we used a plausibility design to compare the changes over time in one intervention district with those in a comparison district in each country. Evaluation included indicators of process, coverage and implementation practice analysed with a difference-of-differences and a time-series approach, using data from independent continuous household and health facility surveys from 2011 to 2014. Primary outcomes for both countries were birth in health facilities, breastfeeding within 1 h after birth, oxytocin administration after birth and knowledge of danger signs for mothers and babies. Interpretation of the results considered contextual factors. RESULTS The intervention was associated with improvements on one of four primary outcomes. We observed a 26-percentage-point increase (95% CI 25-28%) in the proportion of live births where mothers received uterotonics within 1 min after birth in the intervention compared to the comparison district in Tanzania and an 8-percentage-point increase (95% CI 6-9%) in Uganda. The other primary indicators showed no evidence of improvement. In Tanzania, we saw positive changes for two other outcomes reflecting locally identified improvement topics. The intervention was associated with an increase in preparation of clean birth kits for home deliveries (31 percentage points, 95% CI 2-60%) and an increase in health facility supervision by district staff (14 percentage points, 95% CI 0-28%). CONCLUSIONS The systemic quality improvement approach was associated with improvements of only one of four primary outcomes, as well as two Tanzania-specific secondary outcomes. Reasons for the lack of effects included limited implementation strength as well a relatively short follow-up period in combination with a 1-year recall period for population-based estimates and a limited power of the study to detect changes smaller than 10 percentage points. TRIAL REGISTRATION Pan African Clinical Trials Registry: PACTR201311000681314.
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Affiliation(s)
- P Waiswa
- College of Health Sciences, School of Public Health, Makerere University, Kampala, Uganda
- Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
| | - F Manzi
- Ifakara Health Institute, Dar-es-Salaam, Tanzania
| | - G Mbaruku
- Ifakara Health Institute, Dar-es-Salaam, Tanzania
| | - A. K. Rowe
- Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, GA USA
| | - M Marx
- Evaplan GmbH the University of Heidelberg, Heidelberg, Germany
| | - G Tomson
- Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
- Department of Learning, Informatics, Management, Ethics, Karolinska Institutet, Stockholm, Sweden
| | - T Marchant
- Department of Disease Control, London School of Hygiene and Tropical Medicine, London, UK
| | - B. A. Willey
- Department Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
| | - J Schellenberg
- Department of Disease Control, London School of Hygiene and Tropical Medicine, London, UK
| | - S Peterson
- College of Health Sciences, School of Public Health, Makerere University, Kampala, Uganda
- Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
- International Maternal and Child Health Unit, Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
| | - C Hanson
- Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden
- Department of Disease Control, London School of Hygiene and Tropical Medicine, London, UK
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1339
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Beau A, Rivollat M, Réveillas H, Pemonge MH, Mendisco F, Thomas Y, Lefranc P, Deguilloux MF. Multi-scale ancient DNA analyses confirm the western origin of Michelsberg farmers and document probable practices of human sacrifice. PLoS One 2017; 12:e0179742. [PMID: 28678860 PMCID: PMC5497962 DOI: 10.1371/journal.pone.0179742] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2017] [Accepted: 06/02/2017] [Indexed: 02/05/2023] Open
Abstract
In Europe, the Middle Neolithic is characterized by an important diversification of cultures. In northeastern France, the appearance of the Michelsberg culture has been correlated with major cultural changes and interpreted as the result of the settlement of new groups originating from the Paris Basin. This cultural transition has been accompanied by the expansion of particular funerary practices involving inhumations within circular pits and individuals in “non-conventional” positions (deposited in the pits without any particular treatment). If the status of such individuals has been highly debated, the sacrifice hypothesis has been retained for the site of Gougenheim (Alsace). At the regional level, the analysis of the Gougenheim mitochondrial gene pool (SNPs and HVR-I sequence analyses) permitted us to highlight a major genetic break associated with the emergence of the Michelsberg in the region. This genetic discontinuity appeared to be linked to new affinities with farmers from the Paris Basin, correlated to a noticeable hunter-gatherer legacy. All of the evidence gathered supports (i) the occidental origin of the Michelsberg groups and (ii) the potential implication of this migration in the progression of the hunter-gatherer legacy from the Paris Basin to Alsace / Western Germany at the beginning of the Late Neolithic. At the local level, we noted some differences in the maternal gene pool of individuals in "conventional" vs. "non-conventional" positions. The relative genetic isolation of these sub-groups nicely echoes both their social distinction and the hypothesis of sacrifices retained for the site. Our investigation demonstrates that a multi-scale aDNA study of ancient communities offers a unique opportunity to disentangle the complex relationships between cultural and biological evolution.
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Affiliation(s)
- Alice Beau
- De la Préhistoire à l’Actuel, Culture, Environnement, Anthropologie—UMR 5199, CNRS, Université de Bordeaux, Allée Geoffroy Saint-Hilaire, CS, Pessac cedex, France
| | - Maïté Rivollat
- De la Préhistoire à l’Actuel, Culture, Environnement, Anthropologie—UMR 5199, CNRS, Université de Bordeaux, Allée Geoffroy Saint-Hilaire, CS, Pessac cedex, France
- * E-mail: (MR); (PL)
| | - Hélène Réveillas
- De la Préhistoire à l’Actuel, Culture, Environnement, Anthropologie—UMR 5199, CNRS, Université de Bordeaux, Allée Geoffroy Saint-Hilaire, CS, Pessac cedex, France
- Centre d’Archéologie Préventive de Bordeaux Métropole, Direction des Bâtiments et Moyens, Esplanade Charles-de-Gaulle, Bordeaux cedex, France
- Institut National de Recherche en Archéologie Préventive, Centre Archéologique de Strasbourg, 10 rue d’Altkirch, Strasbourg, France
| | - Marie-Hélène Pemonge
- De la Préhistoire à l’Actuel, Culture, Environnement, Anthropologie—UMR 5199, CNRS, Université de Bordeaux, Allée Geoffroy Saint-Hilaire, CS, Pessac cedex, France
| | - Fanny Mendisco
- De la Préhistoire à l’Actuel, Culture, Environnement, Anthropologie—UMR 5199, CNRS, Université de Bordeaux, Allée Geoffroy Saint-Hilaire, CS, Pessac cedex, France
| | - Yohann Thomas
- Institut National de Recherche en Archéologie Préventive, Centre Archéologique de Strasbourg, 10 rue d’Altkirch, Strasbourg, France
| | - Philippe Lefranc
- Institut National de Recherche en Archéologie Préventive, Centre Archéologique de Strasbourg, 10 rue d’Altkirch, Strasbourg, France
- Archéologie et Histoire Ancienne: Méditerranée/Europe–UMR 7044, Université de Strasbourg, Maison Interuniversitaire des Sciences de l’Homme d’Alsace, 5 Allée du Général Rouvillois, CS, Strasbourg cedex, France
- * E-mail: (MR); (PL)
| | - Marie-France Deguilloux
- De la Préhistoire à l’Actuel, Culture, Environnement, Anthropologie—UMR 5199, CNRS, Université de Bordeaux, Allée Geoffroy Saint-Hilaire, CS, Pessac cedex, France
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Dossou-Yovo ER, Baggie I, Djagba JF, Zwart SJ. Diversity of inland valleys and opportunities for agricultural development in Sierra Leone. PLoS One 2017; 12:e0180059. [PMID: 28662093 PMCID: PMC5491119 DOI: 10.1371/journal.pone.0180059] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 06/08/2017] [Indexed: 12/02/2022] Open
Abstract
Inland valleys are becoming increasingly important agricultural production areas for rural households in sub-Saharan Africa due to their relative high and secure water availability and soil fertility. In addition, inland valleys are important as water buffer and biodiversity hot spots and they provide local communities with forest, forage, and fishing resources. As different inland-valley ecosystem functions may conflict with agricultural objectives, indiscriminate development should be avoided. This study aims to analyze the diversity of inland valleys in Sierra Leone and to develop guidelines for more precise interventions. Land use, biophysical and socio-economic data were analyzed on 257 inland valleys using spatial and multivariate techniques. Five cluster groups of inland valleys were identified: (i) semi-permanently flooded with high soil organic carbon (4.2%) and moderate available phosphorus (10.2 ppm), mostly under natural vegetation; (ii) semi-permanently flooded with low soil organic carbon (1.5%) and very low available phosphorus (3.1 ppm), abandoned by farmers; (iii) seasonally flooded with moderate soil organic carbon (3.1%) and low available phosphorus (8.3 ppm), used for rainfed rice and off-season vegetables produced without fertilizer application for household consumption and market; (iv) well drained with moderate soil organic carbon (3.8%) and moderate available phosphorus (10.0 ppm), used for rainfed rice and off-season vegetables produced with fertilizer application for household consumption and market; and (v) well drained with moderate soil organic carbon (3.6%) and moderate available phosphorus (11 ppm), used for household consumption without fertilizer application. Soil organic carbon, available phosphorus, hydrological regime, physical accessibility and market opportunity were the major factors affecting agricultural intensification of inland valleys. Opening up the areas in which inland valleys occur through improved roads and markets, and better water control through drainage infrastructures along with an integrated nutrient management would promote the sustainable agricultural use of inland valleys.
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Affiliation(s)
- Elliott Ronald Dossou-Yovo
- Geographic Information System and Remote Sensing Unit, Africa Rice Center (AfricaRice), Cotonou, Benin
- * E-mail: ,
| | - Idriss Baggie
- Rokupr Agricultural Research Centre (RARC), Sierra Leone Agricultural Research Institute (SLARI), Rokupr, Sierra Leone
| | - Justin Fagnombo Djagba
- Geographic Information System and Remote Sensing Unit, Africa Rice Center (AfricaRice), Cotonou, Benin
| | - Sander Jaap Zwart
- Geographic Information System and Remote Sensing Unit, Africa Rice Center (AfricaRice), Cotonou, Benin
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Augsburger M, Elbert T. When do traumatic experiences alter risk-taking behavior? A machine learning analysis of reports from refugees. PLoS One 2017; 12:e0177617. [PMID: 28498865 PMCID: PMC5428957 DOI: 10.1371/journal.pone.0177617] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 04/28/2017] [Indexed: 11/19/2022] Open
Abstract
Exposure to traumatic stressors and subsequent trauma-related mental changes may alter a person's risk-taking behavior. It is unclear whether this relationship depends on the specific types of traumatic experiences. Moreover, the association has never been tested in displaced individuals with substantial levels of traumatic experiences. The present study assessed risk-taking behavior in 56 displaced individuals by means of the balloon analogue risk task (BART). Exposure to traumatic events, symptoms of posttraumatic stress disorder and depression were assessed by means of semi-structured interviews. Using a novel statistical approach (stochastic gradient boosting machines), we analyzed predictors of risk-taking behavior. Exposure to organized violence was associated with less risk-taking, as indicated by fewer adjusted pumps in the BART, as was the reported experience of physical abuse and neglect, emotional abuse, and peer violence in childhood. However, civil traumatic stressors, as well as other events during childhood were associated with lower risk taking. This suggests that the association between global risk-taking behavior and exposure to traumatic stress depends on the particular type of the stressors that have been experienced.
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Affiliation(s)
- Mareike Augsburger
- Department of Psychology, University of Konstanz, Konstanz, Germany
- NGO vivo international e.V., Allensbach, Germany
- Department of Psychology, University of Zurich, Zurich, Switzerland
- * E-mail:
| | - Thomas Elbert
- Department of Psychology, University of Konstanz, Konstanz, Germany
- NGO vivo international e.V., Allensbach, Germany
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Lonjou C, Damiola F, Moissonnier M, Durand G, Malakhova I, Masyakin V, Le Calvez-Kelm F, Cardis E, Byrnes G, Kesminiene A, Lesueur F. Investigation of DNA repair-related SNPs underlying susceptibility to papillary thyroid carcinoma reveals MGMT as a novel candidate gene in Belarusian children exposed to radiation. BMC Cancer 2017; 17:328. [PMID: 28499365 PMCID: PMC5429528 DOI: 10.1186/s12885-017-3314-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 05/02/2017] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Genetic factors may influence an individual's sensitivity to ionising radiation and therefore modify his/her risk of developing papillary thyroid carcinoma (PTC). Previously, we reported that common single nucleotide polymorphisms (SNPs) within the DNA damage recognition gene ATM contribute to PTC risk in Belarusian children exposed to fallout from the Chernobyl power plant accident. Here we explored in the same population the contribution of a panel of DNA repair-related SNPs in genes acting downstream of ATM. METHODS The association of 141 SNPs located in 43 DNA repair genes was examined in 75 PTC cases and 254 controls from the Gomel region in Belarus. All subjects were younger than 15 years at the time of the Chernobyl accident. Conditional logistic regressions accounting for radiation dose were performed with PLINK using the additive allelic inheritance model, and a linkage disequilibrium (LD)-based Bonferroni correction was used for correction for multiple testing. RESULTS The intronic SNP rs2296675 in MGMT was associated with an increased PTC risk [per minor allele odds ratio (OR) 2.54 95% CI 1.50, 4.30, P per allele = 0.0006, P corr.= 0.05], and gene-wide association testing highlighted a possible role for ERCC5 (P Gene = 0.01) and PCNA (P Gene = 0.05) in addition to MGMT (P Gene = 0.008). CONCLUSIONS These findings indicate that several genes acting in distinct DNA repair mechanisms contribute to PTC risk. Further investigation is needed to decipher the functional properties of the methyltransferase encoded by MGMT and to understand how alteration of such functions may lead to the development of the most common type of thyroid cancer.
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Affiliation(s)
- Christine Lonjou
- Institut Curie, 75248 Paris, France
- PSL Research University, 75005 Paris, France
- INSERM, U900, 75248 Paris, France
- Mines Paris Tech, 77305 Fontainebleau, France
| | | | - Monika Moissonnier
- Environment and Radiation, International Agency for Research on Cancer (IARC), 69372 Lyon, France
| | | | - Irina Malakhova
- Republican Scientific and Practical Center for Medical Technologies, Informatisation, Administration and Management of Health (RSPC MT), 220013 Minsk, Belarus
| | - Vladimir Masyakin
- Republican Research Center for Radiation Medicine & Human Ecology, 246040 Gomel, Belarus
| | | | - Elisabeth Cardis
- Centre for Research in Environmental Epidemiology (CREAL), IMIM (Hospital del Mar Research Institute), CIBER Epidemiología y Salud Pública (CIBERESP), 08003 Barcelona, Spain
| | - Graham Byrnes
- Environment and Radiation, International Agency for Research on Cancer (IARC), 69372 Lyon, France
| | - Ausrele Kesminiene
- Environment and Radiation, International Agency for Research on Cancer (IARC), 69372 Lyon, France
| | - Fabienne Lesueur
- Institut Curie, 75248 Paris, France
- PSL Research University, 75005 Paris, France
- INSERM, U900, 75248 Paris, France
- Mines Paris Tech, 77305 Fontainebleau, France
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Connette GM, Oswald P, Thura MK, LaJeunesse Connette KJ, Grindley ME, Songer M, Zug GR, Mulcahy DG. Rapid forest clearing in a Myanmar proposed national park threatens two newly discovered species of geckos (Gekkonidae: Cyrtodactylus). PLoS One 2017; 12:e0174432. [PMID: 28403189 PMCID: PMC5389631 DOI: 10.1371/journal.pone.0174432] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Accepted: 02/26/2017] [Indexed: 11/18/2022] Open
Abstract
Myanmar’s recent transition from military rule towards a more democratic government has largely ended decades of political and economic isolation. Although Myanmar remains heavily forested, increased development in recent years has been accompanied by exceptionally high rates of forest loss. In this study, we document the rapid progression of deforestation in and around the proposed Lenya National Park, which includes some of the largest remaining areas of lowland evergreen rainforest in mainland Southeast Asia. The globally unique forests in this area are rich in biodiversity and remain a critical stronghold for many threatened and endangered species, including large charismatic fauna such as tiger and Asian elephant. We also conducted a rapid assessment survey of the herpetofauna of the proposed national park, which resulted in the discovery of two new species of bent-toed geckos, genus Cyrtodactylus. We describe these new species, C. lenyasp. nov. and C. payarhtanensissp. nov., which were found in association with karst (i.e., limestone) rock formations within mature lowland wet evergreen forest. The two species were discovered less than 35 km apart and are each known from only a single locality. Because of the isolated nature of the karst formations in the proposed Lenya National Park, these geckos likely have geographical ranges restricted to the proposed protected area and are threatened by approaching deforestation. Although lowland evergreen rainforest has vanished from most of continental Southeast Asia, Myanmar can still take decisive action to preserve one of the most biodiverse places on Earth.
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Affiliation(s)
- Grant M. Connette
- Conservation Ecology Center, Smithsonian Conservation Biology Institute, Smithsonian Institution, Front Royal, Virginia, United States of America
- * E-mail:
| | - Patrick Oswald
- Fauna & Flora International, San Chaung Township, Yangon, Myanmar
| | - Myint Kyaw Thura
- Myanmar Environment & Sustainable Conservation Co., LTD (MESC), Yangon, Myanmar
| | - Katherine J. LaJeunesse Connette
- Conservation Ecology Center, Smithsonian Conservation Biology Institute, Smithsonian Institution, Front Royal, Virginia, United States of America
| | - Mark E. Grindley
- Fauna & Flora International, San Chaung Township, Yangon, Myanmar
| | - Melissa Songer
- Conservation Ecology Center, Smithsonian Conservation Biology Institute, Smithsonian Institution, Front Royal, Virginia, United States of America
| | - George R. Zug
- Department of Vertebrate Zoology, National Museum of Natural History (NMNH), Smithsonian Institution, Washington D.C., United States of America
| | - Daniel G. Mulcahy
- Global Genome Initiative (GGI), National Museum of Natural History (NMNH), Smithsonian Institution, Washington D.C., United States of America
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Kauzlaric A, Ecco G, Cassano M, Duc J, Imbeault M, Trono D. The mouse genome displays highly dynamic populations of KRAB-zinc finger protein genes and related genetic units. PLoS One 2017; 12:e0173746. [PMID: 28334004 PMCID: PMC5363842 DOI: 10.1371/journal.pone.0173746] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 02/24/2017] [Indexed: 12/13/2022] Open
Abstract
KRAB-containing poly-zinc finger proteins (KZFPs) constitute the largest family of transcription factors encoded by mammalian genomes, and growing evidence indicates that they fulfill functions critical to both embryonic development and maintenance of adult homeostasis. KZFP genes underwent broad and independent waves of expansion in many higher vertebrates lineages, yet comprehensive studies of members harbored by a given species are scarce. Here we present a thorough analysis of KZFP genes and related units in the murine genome. We first identified about twice as many elements than previously annotated as either KZFP genes or pseudogenes, notably by assigning to this family an entity formerly considered as a large group of Satellite repeats. We then could delineate an organization in clusters distributed throughout the genome, with signs of recombination, translocation, duplication and seeding of new sites by retrotransposition of KZFP genes and related genetic units (KZFP/rGUs). Moreover, we harvested evidence indicating that closely related paralogs had evolved through both drifting and shifting of sequences encoding for zinc finger arrays. Finally, we could demonstrate that the KAP1-SETDB1 repressor complex tames the expression of KZFP/rGUs within clusters, yet that the primary targets of this regulation are not the KZFP/rGUs themselves but enhancers contained in neighboring endogenous retroelements and that, underneath, KZFPs conserve highly individualized patterns of expression.
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Affiliation(s)
- Annamaria Kauzlaric
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Gabriela Ecco
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Marco Cassano
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Julien Duc
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Michael Imbeault
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Didier Trono
- School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
- * E-mail:
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Cowart DA, Durand L, Cambon-Bonavita MA, Arnaud-Haond S. Investigation of bacterial communities within the digestive organs of the hydrothermal vent shrimp Rimicaris exoculata provide insights into holobiont geographic clustering. PLoS One 2017; 12:e0172543. [PMID: 28296889 PMCID: PMC5351989 DOI: 10.1371/journal.pone.0172543] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 02/05/2017] [Indexed: 01/16/2023] Open
Abstract
Prokaryotic communities forming symbiotic relationships with the vent shrimp, Rimicaris exoculata, are well studied components of hydrothermal ecosystems at the Mid-Atlantic Ridge (MAR). Despite the tight link between host and symbiont, the observed lack of spatial genetic structure seen in R. exoculata contrasts with the geographic differentiation detected in specific bacterial ectosymbionts. The geographic clustering of bacterial lineages within a seemingly panmictic host suggests either the presence of finer scale restriction to gene flow not yet detected in the host, horizontal transmission (environmental selection) of its endosymbionts as a consequence of unique vent geochemistry, or vertically transmitted endosymbionts that exhibit genetic differentiation. To identify which hypothesis best fits, we tested whether bacterial assemblages exhibit differentiation across sites or host populations by performing a 16S rRNA metabarcoding survey on R. exoculata digestive prokaryote samples (n = 31) taken from three geochemically distinct vents across MAR: Rainbow, Trans-Atlantic Geotraverse (TAG) and Logatchev. Analysis of communities across two organs (digestive tract, stomach), three molt colors (white, red, black) and three life stages (eggs, juveniles, adults) also provided insights into symbiont transmission mode. Examining both whole communities and operational taxonomic units (OTUs) confirmed the presence of three main epibionts: Epsilonproteobacteria, Mollicutes and Deferribacteres. With these findings, we identified a clear pattern of geographic segregation by vent in OTUs assigned to Epsilonproteobacteria. Additionally, we detected evidence for differentiation among all communities associated to vents and life stages. Overall, results suggest a combination of environmental selection and vertical inheritance of some of the symbiotic lineages.
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Affiliation(s)
- Dominique A. Cowart
- Ifremer (Institut Français de Recherche pour l'Exploitation de la MER) UMR MARBEC (Marine Biodiversity, Exploitation and Conservation) BP 17, Sète - France
| | - Lucile Durand
- Ifremer (Institut Français de Recherche pour l'Exploitation de la MER) Laboratoire de Microbiologie des Environnements Extrêmes, UMR6197, Département des Ressources physiques et Ecosystèmes de Fond de mer (REM) ZI pointe du diable, CS 10070, Plouzané - France
| | - Marie-Anne Cambon-Bonavita
- Ifremer (Institut Français de Recherche pour l'Exploitation de la MER) Laboratoire de Microbiologie des Environnements Extrêmes, UMR6197, Département des Ressources physiques et Ecosystèmes de Fond de mer (REM) ZI pointe du diable, CS 10070, Plouzané - France
- UBO, UMR 6197, UBO, Ifremer, CNRS, IUEM Rue Dumont d'Urville, Plouzané - France
- CNRS, UMR 6197, CNRS, Ifremer, UBO, IUEM Rue Dumont d'Urville, Plouzané - France
| | - Sophie Arnaud-Haond
- Ifremer (Institut Français de Recherche pour l'Exploitation de la MER) UMR MARBEC (Marine Biodiversity, Exploitation and Conservation) BP 17, Sète - France
- * E-mail:
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Lanoiselée HM, Nicolas G, Wallon D, Rovelet-Lecrux A, Lacour M, Rousseau S, Richard AC, Pasquier F, Rollin-Sillaire A, Martinaud O, Quillard-Muraine M, de la Sayette V, Boutoleau-Bretonniere C, Etcharry-Bouyx F, Chauviré V, Sarazin M, le Ber I, Epelbaum S, Jonveaux T, Rouaud O, Ceccaldi M, Félician O, Godefroy O, Formaglio M, Croisile B, Auriacombe S, Chamard L, Vincent JL, Sauvée M, Marelli-Tosi C, Gabelle A, Ozsancak C, Pariente J, Paquet C, Hannequin D, Campion D. APP, PSEN1, and PSEN2 mutations in early-onset Alzheimer disease: A genetic screening study of familial and sporadic cases. PLoS Med 2017; 14:e1002270. [PMID: 28350801 PMCID: PMC5370101 DOI: 10.1371/journal.pmed.1002270] [Citation(s) in RCA: 310] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 02/17/2017] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Amyloid protein precursor (APP), presenilin-1 (PSEN1), and presenilin-2 (PSEN2) mutations cause autosomal dominant forms of early-onset Alzheimer disease (AD-EOAD). Although these genes were identified in the 1990s, variant classification remains a challenge, highlighting the need to colligate mutations from large series. METHODS AND FINDINGS We report here a novel update (2012-2016) of the genetic screening of the large AD-EOAD series ascertained across 28 French hospitals from 1993 onwards, bringing the total number of families with identified mutations to n = 170. Families were included when at least two first-degree relatives suffered from early-onset Alzheimer disease (EOAD) with an age of onset (AOO) ≤65 y in two generations. Furthermore, we also screened 129 sporadic cases of Alzheimer disease with an AOO below age 51 (44% males, mean AOO = 45 ± 2 y). APP, PSEN1, or PSEN2 mutations were identified in 53 novel AD-EOAD families. Of the 129 sporadic cases screened, 17 carried a PSEN1 mutation and 1 carried an APP duplication (13%). Parental DNA was available for 10 sporadic mutation carriers, allowing us to show that the mutation had occurred de novo in each case. Thirteen mutations (12 in PSEN1 and 1 in PSEN2) identified either in familial or in sporadic cases were previously unreported. Of the 53 mutation carriers with available cerebrospinal fluid (CSF) biomarkers, 46 (87%) had all three CSF biomarkers-total tau protein (Tau), phospho-tau protein (P-Tau), and amyloid β (Aβ)42-in abnormal ranges. No mutation carrier had the three biomarkers in normal ranges. One limitation of this study is the absence of functional assessment of the possibly and probably pathogenic variants, which should help their classification. CONCLUSIONS Our findings suggest that a nonnegligible fraction of PSEN1 mutations occurs de novo, which is of high importance for genetic counseling, as PSEN1 mutational screening is currently performed in familial cases only. Among the 90 distinct mutations found in the whole sample of families and isolated cases, definite pathogenicity is currently established for only 77%, emphasizing the need to pursue the effort to classify variants.
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Affiliation(s)
- Hélène-Marie Lanoiselée
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Neurology and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Rouen, France
- Department of Neurology, Orleans Regional Hospital, Orleans, France
| | - Gaël Nicolas
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - David Wallon
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Neurology and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Anne Rovelet-Lecrux
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Morgane Lacour
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Neurology and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Stéphane Rousseau
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Anne-Claire Richard
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Florence Pasquier
- Department of Neurology and CNR-MAJ, Lille University Hospital, Lille, France
- Inserm UMR-S 1171, Université Lille Nord de France, Lille, France
| | - Adeline Rollin-Sillaire
- Department of Neurology and CNR-MAJ, Lille University Hospital, Lille, France
- Inserm UMR-S 1171, Université Lille Nord de France, Lille, France
| | - Olivier Martinaud
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Neurology and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | | | | | | | | | - Valérie Chauviré
- Department of Neurology, Angers University Hospital, Angers, France
| | - Marie Sarazin
- Department of Neurology, Saint Anne University Hospital, Paris, France
| | - Isabelle le Ber
- CNR-MAJ, AP-HP, Hôpital de la Pitié-Salpêtrière, Paris, France; and ICM, Inserm U1127, CNRS UMR 7225, Sorbonne Universités, UPMC-P6 UMR S 1127 - Hôpital Pitié-Salpêtrière, Paris, France
| | - Stéphane Epelbaum
- CNR-MAJ, AP-HP, Hôpital de la Pitié-Salpêtrière, Paris, France; and ICM, Inserm U1127, CNRS UMR 7225, Sorbonne Universités, UPMC-P6 UMR S 1127 - Hôpital Pitié-Salpêtrière, Paris, France
| | - Thérèse Jonveaux
- Department of Neurology, Nancy University Hospital, Nancy, France
| | - Olivier Rouaud
- Department of Neurology, Dijon University Hospital, Dijon, France
| | - Mathieu Ceccaldi
- Aix Marseille University, Inserm, INS, Institut de Neurosciences des Systèmes, Marseille, France; AP-HM, Service de Neurologie et Neuropsychologie, CHU Timone, Marseille, France
| | - Olivier Félician
- Aix Marseille University, Inserm, INS, Institut de Neurosciences des Systèmes, Marseille, France; AP-HM, Service de Neurologie et Neuropsychologie, CHU Timone, Marseille, France
| | - Olivier Godefroy
- Department of Neurology, Amiens University Hospital Center, Amiens, France
| | - Maite Formaglio
- Department of Neurology and CMRR Lyon University Hospital, Lyon, France
| | - Bernard Croisile
- Department of Neurology and CMRR Lyon University Hospital, Lyon, France
| | - Sophie Auriacombe
- Department of Neurology, Bordeaux University Hospital, Bordeaux, France
| | - Ludivine Chamard
- Department of Neurology, Besançon University Hospital, Besançon, France
| | | | - Mathilde Sauvée
- Department of Neurology, Grenoble University Hospital, Grenoble, France
| | | | - Audrey Gabelle
- Department of Neurology, Montpellier University Hospital, Montpellier, France
| | - Canan Ozsancak
- Department of Neurology, Orleans Regional Hospital, Orleans, France
| | - Jérémie Pariente
- Department of Neurology, Toulouse University Hospital, Toulouse, France
| | - Claire Paquet
- CMRR Paris Nord AP-HP, Hôpital Lariboisière, INSERM, U942, Université Paris Diderot, Sorbonne Paris Cité, UMRS 942, Paris, France
| | - Didier Hannequin
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Neurology and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Rouen, France
| | - Dominique Campion
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and CNR-MAJ, Normandy Center for Genomic and Personalized Medicine, Rouen, France
- Department of Research, Centre Hospitalier du Rouvray, Sotteville-lès-Rouen, France
- * E-mail:
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Le Port A, Bernard T, Hidrobo M, Birba O, Rawat R, Ruel MT. Delivery of iron-fortified yoghurt, through a dairy value chain program, increases hemoglobin concentration among children 24 to 59 months old in Northern Senegal: A cluster-randomized control trial. PLoS One 2017; 12:e0172198. [PMID: 28245227 PMCID: PMC5330480 DOI: 10.1371/journal.pone.0172198] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 02/01/2017] [Indexed: 12/23/2022] Open
Abstract
Background Innovative strategies are needed to enhance the nutritional impact of agriculture. Value chain approaches, which use supply chains to add value (usually economic) to products as they move from producers to consumers, can be used to increase access to nutritious foods and improve nutritional status. This study tested whether a dairy value chain could be used to distribute a micronutrient-fortified yoghurt (MNFY) (conditional upon the producer supplying a minimum amount of cow milk/day) to improve hemoglobin and reduce anemia among preschool children in a remote area in Northern Senegal. Methods A cluster randomized control trial was used to compare 204 children (24 to 59 months of age at baseline) from households who received the MNFY coupled to a behavior change communication (BCC) campaign focusing on anemia prevention to 245 children from a control group (receiving BCC only) after one year. Randomization was done at the level of the family concession (households from the same family) (n = 321). Eligible households had a child of the target age and were willing to deliver milk to the dairy factory. Changes in anemia and hemoglobin between groups were assessed using mixed regression models. Key findings Anemia prevalence was very high at baseline (80%) and dropped to close to 60% at endline, with no differences between intervention groups. Hemoglobin increased by 0.55 g/dL, 95%CI (0.27; 0.84) more in the intervention compared to the control group after one year, in models that controlled for potentially confounding factors. The impact was greater (0.72 g/dL, 95%CI (0.34; 1.12)) for boys, compared to girls (0.38 g/dL, 95%CI (-0.03; 0.80)). Conclusion The dairy value chain was a successful strategy to distribute MNFY among pastoralists in Northern Senegal, and increase Hb concentrations among their children. This study is one of the first proofs of concept showing that a nutrition-sensitive agriculture value chain approach can contribute to improved child nutrition in a remote pastoralist population. Trial registration ClinicalTrials.gov NCT02079961
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Affiliation(s)
- Agnes Le Port
- Poverty Health and Nutrition Division, International Food Policy Research Institute, Dakar, Senegal
- * E-mail:
| | - Tanguy Bernard
- Markets, Trade and Institutions, International Food Policy Research Institute, Dakar, Senegal
- GREThA, UMR CNRS 5113, University of Bordeaux, Bordeaux, France
| | - Melissa Hidrobo
- Poverty Health and Nutrition Division, International Food Policy Research Institute, Washington DC, United States of America
| | - Ousmane Birba
- Poverty Health and Nutrition Division, International Food Policy Research Institute, Dakar, Senegal
| | - Rahul Rawat
- Poverty Health and Nutrition Division, International Food Policy Research Institute, Dakar, Senegal
| | - Marie T. Ruel
- Poverty Health and Nutrition Division, International Food Policy Research Institute, Washington DC, United States of America
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Klupp E, Weidlich D, Schlaeger S, Baum T, Cervantes B, Deschauer M, Kooijman H, Rummeny EJ, Zimmer C, Kirschke JS, Karampinos DC. B1-insensitive T2 mapping of healthy thigh muscles using a T2-prepared 3D TSE sequence. PLoS One 2017; 12:e0171337. [PMID: 28196133 PMCID: PMC5308846 DOI: 10.1371/journal.pone.0171337] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 01/18/2017] [Indexed: 11/29/2022] Open
Abstract
Purpose To propose a T2-prepared 3D turbo spin echo (T2prep 3D TSE) sequence for B1-insensitive skeletal muscle T2 mapping and compare its performance with 2D and 3D multi-echo spin echo (MESE) for T2 mapping in thigh muscles of healthy subjects. Methods The performance of 2D MESE, 3D MESE and the proposed T2prep 3D TSE in the presence of transmit B1 and B0 inhomogeneities was first simulated. The thigh muscles of ten young and healthy subjects were then scanned on a 3 T system and T2 mapping was performed using the three sequences. Transmit B1-maps and proton density fat fraction (PDFF) maps were also acquired. The subjects were scanned three times to assess reproducibility. T2 values were compared among sequences and their sensitivity to B1 inhomogeneities was compared to simulation results. Correlations were also determined between T2 values, PDFF and B1. Results The left rectus femoris muscle showed the largest B1 deviations from the nominal value (from 54.2% to 92.9%). Significant negative correlations between T2 values and B1 values were found in the left rectus femoris muscle for 3D MESE (r = -0.72, p<0.001) and 2D MESE (r = -0.71, p<0.001), but not for T2prep 3D TSE (r = -0.32, p = 0.09). Reproducibility of T2 expressed by root mean square coefficients of variation (RMSCVs) were equal to 3.5% in T2prep 3D TSE, 2.6% in 3D MESE and 2.4% in 2D MESE. Significant differences between T2 values of 3D sequences (T2prep 3D TSE and 3D MESE) and 2D MESE were found in all muscles with the highest values for 2D MESE (p<0.05). No significant correlations were found between PDFF and T2 values. Conclusion A strong influence of an inhomogeneous B1 field on the T2 values of 3D MESE and 2D MESE was shown, whereas the proposed T2prep 3D TSE gives B1-insensitive and reproducible thigh muscle T2 mapping.
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Affiliation(s)
- Elisabeth Klupp
- Institut für Diagnostische und Interventionelle Neuroradiologie, Technische Universität München, Munich, Germany
- * E-mail:
| | - Dominik Weidlich
- Institut für Diagnostische und Interventionelle Radiologie, Technische Universität München, Munich, Germany
| | - Sarah Schlaeger
- Institut für Diagnostische und Interventionelle Neuroradiologie, Technische Universität München, Munich, Germany
| | - Thomas Baum
- Institut für Diagnostische und Interventionelle Radiologie, Technische Universität München, Munich, Germany
| | - Barbara Cervantes
- Institut für Diagnostische und Interventionelle Radiologie, Technische Universität München, Munich, Germany
| | - Marcus Deschauer
- Neurologische Klinik und Poliklinik, Technische Universität München, Munich, Germany
| | | | - Ernst J. Rummeny
- Institut für Diagnostische und Interventionelle Radiologie, Technische Universität München, Munich, Germany
| | - Claus Zimmer
- Institut für Diagnostische und Interventionelle Neuroradiologie, Technische Universität München, Munich, Germany
| | - Jan S. Kirschke
- Institut für Diagnostische und Interventionelle Neuroradiologie, Technische Universität München, Munich, Germany
| | - Dimitrios C. Karampinos
- Institut für Diagnostische und Interventionelle Radiologie, Technische Universität München, Munich, Germany
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Schuecker J, Schmidt M, van Albada SJ, Diesmann M, Helias M. Fundamental Activity Constraints Lead to Specific Interpretations of the Connectome. PLoS Comput Biol 2017; 13:e1005179. [PMID: 28146554 PMCID: PMC5287462 DOI: 10.1371/journal.pcbi.1005179] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 10/03/2016] [Indexed: 01/11/2023] Open
Abstract
The continuous integration of experimental data into coherent models of the brain is an increasing challenge of modern neuroscience. Such models provide a bridge between structure and activity, and identify the mechanisms giving rise to experimental observations. Nevertheless, structurally realistic network models of spiking neurons are necessarily underconstrained even if experimental data on brain connectivity are incorporated to the best of our knowledge. Guided by physiological observations, any model must therefore explore the parameter ranges within the uncertainty of the data. Based on simulation results alone, however, the mechanisms underlying stable and physiologically realistic activity often remain obscure. We here employ a mean-field reduction of the dynamics, which allows us to include activity constraints into the process of model construction. We shape the phase space of a multi-scale network model of the vision-related areas of macaque cortex by systematically refining its connectivity. Fundamental constraints on the activity, i.e., prohibiting quiescence and requiring global stability, prove sufficient to obtain realistic layer- and area-specific activity. Only small adaptations of the structure are required, showing that the network operates close to an instability. The procedure identifies components of the network critical to its collective dynamics and creates hypotheses for structural data and future experiments. The method can be applied to networks involving any neuron model with a known gain function.
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Affiliation(s)
- Jannis Schuecker
- Institute of Neuroscience and Medicine (INM-6) and Institute for Advanced Simulation (IAS-6) and JARA BRAIN Institute I, Jülich Research Centre, Jülich, Germany
| | - Maximilian Schmidt
- Institute of Neuroscience and Medicine (INM-6) and Institute for Advanced Simulation (IAS-6) and JARA BRAIN Institute I, Jülich Research Centre, Jülich, Germany
| | - Sacha J. van Albada
- Institute of Neuroscience and Medicine (INM-6) and Institute for Advanced Simulation (IAS-6) and JARA BRAIN Institute I, Jülich Research Centre, Jülich, Germany
| | - Markus Diesmann
- Institute of Neuroscience and Medicine (INM-6) and Institute for Advanced Simulation (IAS-6) and JARA BRAIN Institute I, Jülich Research Centre, Jülich, Germany
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical Faculty, RWTH Aachen University, Aachen, Germany
- Department of Physics, Faculty 1, RWTH Aachen University, Aachen, Germany
| | - Moritz Helias
- Institute of Neuroscience and Medicine (INM-6) and Institute for Advanced Simulation (IAS-6) and JARA BRAIN Institute I, Jülich Research Centre, Jülich, Germany
- Department of Physics, Faculty 1, RWTH Aachen University, Aachen, Germany
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Luttrell C, Sills E, Aryani R, Ekaputri AD, Evinke MF. Beyond opportunity costs: who bears the implementation costs of reducing emissions from deforestation and degradation? Mitig Adapt Strateg Glob Chang 2017; 23:291-310. [PMID: 30093832 PMCID: PMC6054016 DOI: 10.1007/s11027-016-9736-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 12/15/2016] [Indexed: 06/08/2023]
Abstract
Reducing Emissions from Deforestation and Degradation (REDD+) in developing countries is based on the premise that conserving tropical forests is a cost-effective way to reduce carbon emissions and therefore can be fully funded by international actors with obligations or interests in reducing emissions. However, concerns have repeatedly been raised about whether stakeholders in REDD+ host countries will actually end up bearing the costs of REDD+. Most prior analyses of the costs of REDD+ have focused on the opportunity costs of foregone alternative uses of forest land. We draw on a pan-tropical study of 22 subnational REDD+ initiatives in five countries to explore patterns in implementation costs, including which types of organizations are involved and which are sharing the costs of implementing REDD+. We find that many organizations involved in the implementation of REDD+, particularly at the subnational level and in the public sector, are bearing implementation costs not covered by the budgets of the REDD+ initiatives. To sustain this level of cost-sharing, REDD+ must be designed to deliver local as well as global forest benefits.
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Affiliation(s)
- Cecilia Luttrell
- Center for International Forestry Research (CIFOR), P.O. Box 0113 BOCBD, Bogor, 16000 Indonesia
| | - Erin Sills
- Center for International Forestry Research (CIFOR), P.O. Box 0113 BOCBD, Bogor, 16000 Indonesia
- NC State University, Raleigh, NC USA
| | - Riza Aryani
- Wildlife Conservation Society, Bogor, Indonesia
| | - Andini Desita Ekaputri
- Indonesian Institute of Sciences (LIPI), Jakarta, Indonesia
- University of Hawai’I, Mānoa, HI USA
| | - Maria Febe Evinke
- Center for International Forestry Research (CIFOR), P.O. Box 0113 BOCBD, Bogor, 16000 Indonesia
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