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Cheng X, Barakat R, Pavani G, Usha MK, Calderon R, Snella E, Gorden A, Zhang Y, Gadue P, French DL, Dorman KS, Fidanza A, Campbell CA, Espin-Palazon R. Nod1-dependent NF-kB activation initiates hematopoietic stem cell specification in response to small Rho GTPases. Nat Commun 2023; 14:7668. [PMID: 37996457 PMCID: PMC10667254 DOI: 10.1038/s41467-023-43349-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 01/26/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023] Open
Abstract
Uncovering the mechanisms regulating hematopoietic specification not only would overcome current limitations related to hematopoietic stem and progenitor cell (HSPC) transplantation, but also advance cellular immunotherapies. However, generating functional human induced pluripotent stem cell (hiPSC)-derived HSPCs and their derivatives has been elusive, necessitating a better understanding of the developmental mechanisms that trigger HSPC specification. Here, we reveal that early activation of the Nod1-Ripk2-NF-kB inflammatory pathway in endothelial cells (ECs) primes them to switch fate towards definitive hemogenic endothelium, a pre-requisite to specify HSPCs. Our genetic and chemical embryonic models show that HSPCs fail to specify in the absence of Nod1 and its downstream kinase Ripk2 due to a failure on hemogenic endothelial (HE) programming, and that small Rho GTPases coordinate the activation of this pathway. Manipulation of NOD1 in a human system of definitive hematopoietic differentiation indicates functional conservation. This work establishes the RAC1-NOD1-RIPK2-NF-kB axis as a critical intrinsic inductor that primes ECs prior to HE fate switch and HSPC specification. Manipulation of this pathway could help derive a competent HE amenable to specify functional patient specific HSPCs and their derivatives for the treatment of blood disorders.
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Affiliation(s)
- Xiaoyi Cheng
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, 50011, USA
| | - Radwa Barakat
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, 50011, USA
- Department of Toxicology, Faculty of Veterinary Medicine, Benha University, Qalyubia, 13518, Egypt
| | - Giulia Pavani
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Masuma Khatun Usha
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, 50011, USA
| | - Rodolfo Calderon
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, 50011, USA
| | - Elizabeth Snella
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, 50011, USA
| | - Abigail Gorden
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, 50011, USA
| | - Yudi Zhang
- Department of Statistics, Iowa State University, Ames, IA, 50011, USA
| | - Paul Gadue
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Deborah L French
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Karin S Dorman
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, 50011, USA
- Department of Statistics, Iowa State University, Ames, IA, 50011, USA
| | - Antonella Fidanza
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, EH16 4UU, Edinburgh, United Kingdom
| | - Clyde A Campbell
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, 50011, USA
| | - Raquel Espin-Palazon
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, 50011, USA.
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Davis DL, Roberts A, Calderon R, Kim S, Ryan AS, Sanses TVD. Gluteal muscle fatty infiltration, fall risk, and mobility limitation in older women with urinary incontinence: a pilot study. Skeletal Radiol 2023; 52:47-55. [PMID: 35896734 PMCID: PMC10091062 DOI: 10.1007/s00256-022-04132-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 05/31/2022] [Accepted: 07/18/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Gluteal muscle quality influences risk of falling and mobility limitation. We sought (1) to compare gluteal muscle fatty infiltration (FI) between groups of older women with urinary incontinence (UI) at risk for falling (at-risk group) and not at risk for falling (not-at-risk group), and (2) to determine correlation of gluteal FI with Timed Up and Go (TUG) and Short Physical Performance Battery (SPPB) performance. MATERIALS AND METHODS Prospective pilot study of gluteal FI on pelvis MRI for 19 women with UI, aged ≥ 70 years. A musculoskeletal radiologist selected axial T1-weighted MR images; then, two blinded medical student research assistants analyzed gluteal FI by quantitative fuzzy C-means segmentation. TUG and SPPB tests were performed. TUG ≥ 12 s defined participants as at risk for falling. Descriptive, correlation, and reliability analyses were performed. RESULTS Mean age, 76.3 ± 4.8 years; no difference for age or body mass index (BMI) between the at-risk (n = 5) versus not-at-risk (n = 14) groups. SPPB score (p = 0.013) was lower for the at-risk group (6.4 ± 3.1) than for the not-at-risk group (10.2 ± 1.9). Fuzzy C-means FI-%-estimate differed between the at-risk group and the not-at-risk group for bilateral gluteus medius/minimus (33.2% ± 15.6% versus 19.5% ± 4.1%, p = 0.037) and bilateral gluteus maximus (33.6% ± 15.6% versus 19.7% ± 6.9%, p = 0.047). Fuzzy C-means FI-%-estimate for bilateral gluteus maximus had significant (p < 0.050) moderate correlation with age (rho = - 0.64), BMI (rho = 0.65), and TUG performance (rho = 0.52). Fuzzy C-means FI-%-estimates showed excellent inter-observer and intra-observer reliability (intraclass correlation coefficient, ≥ 0.892). CONCLUSION Older women with UI at risk for falling have greater levels of gluteal FI and mobility limitation as compared to those not at risk for falling.
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Affiliation(s)
- Derik L Davis
- Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, 22 S. Greene Street, Baltimore, MD, 21201, USA.
| | - Andrew Roberts
- University of Maryland School of Medicine, Baltimore, MD, USA
| | | | - Shihyun Kim
- Department of Obstetrics and Gynecology, Howard University College of Medicine, Washington, DC, USA
| | - Alice S Ryan
- Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Tatiana V D Sanses
- Department of Obstetrics and Gynecology, Howard University College of Medicine, Washington, DC, USA
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Tovar MA, Puma D, Palomino S, Peinado J, Llanos F, Martinelli C, Jimenez J, Calderon R, Yuen CM, Lecca L. Integrated screening and testing for TB and COVID-19 in Peru. Public Health Action 2022; 12:7-9. [DOI: 10.5588/pha.21.0077] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 01/21/2021] [Indexed: 11/10/2022] Open
Abstract
We describe the experience of integrating COVID-19 screening and testing into a mobile TB screening unit in Lima, Peru. All attendees received chest radiographs, which were analysed using CAD4TB and CAD4COVID; Xpert MTB/RIF Ultra was used to test for TB, and antibody and polymerase
chain reaction (PCR) for SARS-CoV-2. One Xpert-positive TB case was diagnosed per 168 people screened, one person with SARS-CoV-2 antibodies per 3 people screened, and one PCR-confirmed SARS-CoV-2 infection per 8 people screened. Integrated screening can help to avoid delays in the diagnosis
of both TB and COVID-19.
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Affiliation(s)
- M. A. Tovar
- Socios En Salud Sucursal Peru, Lima, Peru, Escuela de Medicina, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas – UPC, Lima, Peru
| | - D. Puma
- Socios En Salud Sucursal Peru, Lima, Peru
| | | | - J. Peinado
- Socios En Salud Sucursal Peru, Lima, Peru
| | - F. Llanos
- Dirección de Redes Integradas de Salud Lima Norte (DIRIS), Lima, Peru, Facultad de Salud Pública y Administración, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - C. Martinelli
- Dirección de Redes Integradas de Salud Lima Norte (DIRIS), Lima, Peru
| | - J. Jimenez
- Socios En Salud Sucursal Peru, Lima, Peru
| | | | - C. M. Yuen
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA, Division of Global Health Equity, Brigham and Women’s Hospital, Boston, MA, USA
| | - L. Lecca
- Socios En Salud Sucursal Peru, Lima, Peru, Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA
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Calderon R, García-Hernández J, Palma P, Leyva-Morales J, Zambrano-Soria M, Bastidas-Bastidas P, Godoy M. Assessment of pesticide residues in vegetables commonly consumed in Chile and Mexico: potential impacts for public health. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Davis DL, Gilotra MN, Calderon R, Roberts A, Hasan SA. Reliability of supraspinatus intramuscular fatty infiltration estimates on T1-weighted MRI in potential candidates for rotator cuff repair surgery: full-thickness tear versus high-grade partial-thickness tear. Skeletal Radiol 2021; 50:2233-2243. [PMID: 33959799 PMCID: PMC8565455 DOI: 10.1007/s00256-021-03805-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/28/2021] [Accepted: 04/28/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Patients with supraspinatus high-grade partial-thickness tear or full-thickness tear are potential candidates for rotator cuff repair surgery. We sought (1) to compare supraspinatus intramuscular fatty infiltration between these groups by Goutallier grade, fuzzy C-means and an orthopaedic surgeon visible percentage estimate, (2) and to determine the reliability of each method. MATERIALS AND METHODS We performed a retrospective cross-sectional study of supraspinatus intramuscular fatty infiltration on T1-weighted MR images for 93 shoulders with either supraspinatus partial-thickness tear > 50% tendon thickness or full-thickness tear by Goutallier grade, fuzzy C-means and an orthopaedic surgeon visible percentage estimate, by two observers for each method. Descriptive statistics were performed to compare groups. Inter- and intra-observer reliability was determined. Correlative analysis among the three methods was performed. RESULTS Significant differences of mean supraspinatus intramuscular fatty infiltration were present when comparing supraspinatus high-grade partial-thickness tear versus full-thickness tears by Goutallier grade (p = 0.004), fuzzy C-means (p = 0.002) and orthopaedic surgeon visible percentage estimate (p = 0.001). There was no significant difference for age (55.0 ± 11.1 years versus 56.1 ± 9.6 years) or sex (35.4% male versus 47.8% male) for supraspinatus high-grade partial-thickness tear and full-thickness tear, respectively. A significant difference existed among the subgroup of full-thickness tears stratified by tear size by all three methods (p < 0.020). Inter- and intra-observer reliability was Goutallier grade 0.590 and 0.624, fuzzy C-means 0.768 and 0.925 and orthopaedic surgeon visible percentage estimate 0.858 and 0.686, respectively. For shoulders with mean Goutallier grade ≥ 2.0, inter-observer reliability was 0.878 and 0.802 for fuzzy C-means and orthopaedic surgeon visible percentage estimate, respectively. A strong correlation was present among the three methods of supraspinatus FI analysis (rho ≥ 0.72). CONCLUSION Supraspinatus full-thickness tears have higher amounts of intramuscular fatty infiltration compared to high-grade partial-thickness tear. Quantitative fuzzy C-means shows excellent inter-observer reliability for estimating supraspinatus intramuscular fat. Experienced orthopaedic surgeons' semi-quantitative estimation of supraspinatus visible intramuscular fat may offer improved reliability as compared to semi-quantitative Goutallier grade.
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Affiliation(s)
- Derik L. Davis
- Department of Diagnostic Radiology & Nuclear Medicine, University of Maryland School of Medicine, 22 S. Greene Street, Baltimore, MD 21201, USA
| | - Mohit N. Gilotra
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, USA
| | | | - Andrew Roberts
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - S. Ashfaq Hasan
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, USA
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Zarco-Tejada PJ, Poblete T, Camino C, Gonzalez-Dugo V, Calderon R, Hornero A, Hernandez-Clemente R, Román-Écija M, Velasco-Amo MP, Landa BB, Beck PSA, Saponari M, Boscia D, Navas-Cortes JA. Divergent abiotic spectral pathways unravel pathogen stress signals across species. Nat Commun 2021; 12:6088. [PMID: 34667165 PMCID: PMC8526582 DOI: 10.1038/s41467-021-26335-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 10/01/2021] [Indexed: 11/30/2022] Open
Abstract
Plant pathogens pose increasing threats to global food security, causing yield losses that exceed 30% in food-deficit regions. Xylella fastidiosa (Xf) represents the major transboundary plant pest and one of the world's most damaging pathogens in terms of socioeconomic impact. Spectral screening methods are critical to detect non-visual symptoms of early infection and prevent spread. However, the subtle pathogen-induced physiological alterations that are spectrally detectable are entangled with the dynamics of abiotic stresses. Here, using airborne spectroscopy and thermal scanning of areas covering more than one million trees of different species, infections and water stress levels, we reveal the existence of divergent pathogen- and host-specific spectral pathways that can disentangle biotic-induced symptoms. We demonstrate that uncoupling this biotic-abiotic spectral dynamics diminishes the uncertainty in the Xf detection to below 6% across different hosts. Assessing these deviating pathways against another harmful vascular pathogen that produces analogous symptoms, Verticillium dahliae, the divergent routes remained pathogen- and host-specific, revealing detection accuracies exceeding 92% across pathosystems. These urgently needed hyperspectral methods advance early detection of devastating pathogens to reduce the billions in crop losses worldwide.
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Affiliation(s)
- P J Zarco-Tejada
- School of Agriculture and Food (SAF-FVAS) and Faculty of Engineering and Information Technology (IE-FEIT), University of Melbourne, Melbourne, VIC, Australia.
- Instituto de Agricultura Sostenible (IAS), Consejo Superior de Investigaciones Científicas (CSIC), Avda. Menéndez Pidal s/n, 14004, Córdoba, Spain.
| | - T Poblete
- School of Agriculture and Food (SAF-FVAS) and Faculty of Engineering and Information Technology (IE-FEIT), University of Melbourne, Melbourne, VIC, Australia
| | - C Camino
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - V Gonzalez-Dugo
- Instituto de Agricultura Sostenible (IAS), Consejo Superior de Investigaciones Científicas (CSIC), Avda. Menéndez Pidal s/n, 14004, Córdoba, Spain
| | - R Calderon
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell AgriTech, Cornell University, Geneva, NY, USA
| | - A Hornero
- Instituto de Agricultura Sostenible (IAS), Consejo Superior de Investigaciones Científicas (CSIC), Avda. Menéndez Pidal s/n, 14004, Córdoba, Spain
- Department of Geography, Swansea University, Swansea, SA2 8PP, UK
| | | | - M Román-Écija
- Instituto de Agricultura Sostenible (IAS), Consejo Superior de Investigaciones Científicas (CSIC), Avda. Menéndez Pidal s/n, 14004, Córdoba, Spain
| | - M P Velasco-Amo
- Instituto de Agricultura Sostenible (IAS), Consejo Superior de Investigaciones Científicas (CSIC), Avda. Menéndez Pidal s/n, 14004, Córdoba, Spain
| | - B B Landa
- Instituto de Agricultura Sostenible (IAS), Consejo Superior de Investigaciones Científicas (CSIC), Avda. Menéndez Pidal s/n, 14004, Córdoba, Spain
| | - P S A Beck
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - M Saponari
- CNR, Istituto per la Protezione Sostenibile delle Piante, Bari, Italy
| | - D Boscia
- CNR, Istituto per la Protezione Sostenibile delle Piante, Bari, Italy
| | - J A Navas-Cortes
- Instituto de Agricultura Sostenible (IAS), Consejo Superior de Investigaciones Científicas (CSIC), Avda. Menéndez Pidal s/n, 14004, Córdoba, Spain
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Pollock NR, MacIntyre AT, Blauwkamp TA, Blair L, Ho C, Calderon R, Franke MF. Detection of Mycobacterium tuberculosis cell-free DNA to diagnose TB in pediatric and adult patients. Int J Tuberc Lung Dis 2021; 25:403-405. [PMID: 33977910 DOI: 10.5588/ijtld.21.0055] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- N R Pollock
- Department of Laboratory Medicine, Boston Children´s Hospital and Harvard Medical School, Boston, MA
| | | | | | - L Blair
- Karius Inc, Redwood City, CA, USA
| | - C Ho
- Karius Inc, Redwood City, CA, USA
| | - R Calderon
- Socios En Salud Sucursal Peru, Lima, Peru, Programa Acadêmico de Tuberculose, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, RJ, Brazil
| | - M F Franke
- Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA, USA
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Calderon R, Rajendiran K, U J K, Palma P, Arancibia-Miranda N, Silva-Moreno E, Corradini F. Sources and fates of perchlorate in soils in Chile: A case study of perchlorate dynamics in soil-crop systems using lettuce (Lactuca sativa) fields. Environ Pollut 2020; 264:114682. [PMID: 32380400 DOI: 10.1016/j.envpol.2020.114682] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 04/24/2020] [Accepted: 04/25/2020] [Indexed: 06/11/2023]
Abstract
Perchlorate occurs naturally in the environment in deposits of nitrate and can be formed in the atmosphere and precipitate into soil. However, little is known about the occurrence and levels of perchlorate in soils and fertilizers in Chile and its impacts on agricultural systems and food safety. In this study, concentrations of perchlorate were determined in 101 surface soils and 17 fertilizers [nitrogenous (n = 8), nitrogen-phosphorous-potassium (NPK; n = 3), phosphate (n = 2) and non-nitrogenous (n = 4)] collected across Chile from 2017 to 2018. Our results show that perchlorate was detected mainly in agricultural soils (mean: 0.32 ng g-1), grassland rotation sites (0.41 ngg-1) and urban locations (0.38 ng g-1). Interestingly, elevated concentrations of perchlorate (9.66 and 54.0 ng g-1) were found in agricultural soils. All fertilizers contained perchlorate: nitrogenous fertilizers (mean: 32.6 mg kg-1), NPK (mean: 12.6 mg kg-1), non-nitrogenous fertilizers (mean: 10.2 mg kg-1) and phosphates (mean: 11.5 mg kg-1). Only one type of nitrogenous fertilizer (KNO3: 95.3 mg kg-1) exceeded the international regulation limit (50 mg kg-1). For two agronomic practices, the content of perchlorate in lettuce increased as the fertilizer application rate increased, with fertigation promoting a more significant accumulation. However, the concentrations generally remained below regulatory values. Our results suggest that fertilizers constitute an important source of perchlorate in soils.
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Affiliation(s)
- R Calderon
- Centro de Investigación en Recursos Naturales y Sustentabilidad, Universidad Bernardo O'Higgins, Fabrica, 1990, Segundo Piso, Santiago, Chile; Instituto de Investigaciones Agropecuarias, INIA La Platina, Santa Rosa, 11610, Santiago, Chile.
| | - Karthikraj Rajendiran
- Wadsworth Center, New York State Department of Health, Empire State Plaza, P.O. Box 509, Albany, NY, 12201-0509, United States
| | - Kim U J
- Wadsworth Center, New York State Department of Health, Empire State Plaza, P.O. Box 509, Albany, NY, 12201-0509, United States; Department of Earth & Environmental Sciences, University of Texas at Arlington, 500 Yates Street, Arlington, TX, 76019, United States
| | - P Palma
- Laboratorio de Salud Pública, Ambiental y Laboral, Servicio Regional Ministerial, Ministerio de Salud, Región Metropolitana, Santiago, Chile
| | - N Arancibia-Miranda
- Facultad de Química and Biología, Universidad de Santiago de Chile, USACH, Casilla 40, C.P. 33, Santiago, 9170022, Chile; Center for the Development of Nanoscience and Nanotechnology, CEDENNA, Santiago, 9170124, Chile
| | - E Silva-Moreno
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Chile; Instituto de Investigaciones Agropecuarias, INIA La Platina, Santa Rosa, 11610, Santiago, Chile
| | - F Corradini
- Soil Physics and Land Management Group, Wageningen University & Research, Droevendaalsesteeg 3, 6708PB Wageningen, the Netherlands; Instituto de Investigaciones Agropecuarias, INIA La Platina, Santa Rosa, 11610, Santiago, Chile
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Zarco-Tejada PJ, Camino C, Beck PSA, Calderon R, Hornero A, Hernández-Clemente R, Kattenborn T, Montes-Borrego M, Susca L, Morelli M, Gonzalez-Dugo V, North PRJ, Landa BB, Boscia D, Saponari M, Navas-Cortes JA. Previsual symptoms of Xylella fastidiosa infection revealed in spectral plant-trait alterations. Nat Plants 2018; 4:432-439. [PMID: 29942047 DOI: 10.1038/s41477-018-0189-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 05/29/2018] [Indexed: 05/24/2023]
Abstract
Plant pathogens cause significant losses to agricultural yields and increasingly threaten food security1, ecosystem integrity and societies in general2-5. Xylella fastidiosa is one of the most dangerous plant bacteria worldwide, causing several diseases with profound impacts on agriculture and the environment6. Primarily occurring in the Americas, its recent discovery in Asia and Europe demonstrates that X. fastidiosa's geographic range has broadened considerably, positioning it as a reemerging global threat that has caused socioeconomic and cultural damage7,8. X. fastidiosa can infect more than 350 plant species worldwide9, and early detection is critical for its eradication8. In this article, we show that changes in plant functional traits retrieved from airborne imaging spectroscopy and thermography can reveal X. fastidiosa infection in olive trees before symptoms are visible. We obtained accuracies of disease detection, confirmed by quantitative polymerase chain reaction, exceeding 80% when high-resolution fluorescence quantified by three-dimensional simulations and thermal stress indicators were coupled with photosynthetic traits sensitive to rapid pigment dynamics and degradation. Moreover, we found that the visually asymptomatic trees originally scored as affected by spectral plant-trait alterations, developed X. fastidiosa symptoms at almost double the rate of the asymptomatic trees classified as not affected by remote sensing. We demonstrate that spectral plant-trait alterations caused by X. fastidiosa infection are detectable previsually at the landscape scale, a critical requirement to help eradicate some of the most devastating plant diseases worldwide.
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Affiliation(s)
- P J Zarco-Tejada
- European Commission, Joint Research Centre, Directorate D-Sustainable Resources, Ispra, Italy.
| | - C Camino
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Córdoba, Spain
| | - P S A Beck
- European Commission, Joint Research Centre, Directorate D-Sustainable Resources, Ispra, Italy
| | - R Calderon
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Córdoba, Spain
| | - A Hornero
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Córdoba, Spain
- Department of Geography, Swansea University, Swansea, UK
| | | | - T Kattenborn
- Institute of Geography and Geoecology, Karlsruhe Institute of Technology , Karlsruhe, Germany
| | - M Montes-Borrego
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Córdoba, Spain
| | - L Susca
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti dell'Università di Bari, Bari, Italy
| | - M Morelli
- CNR, Istituto per la Protezione Sostenibile delle Piante, Bari, Italy
| | - V Gonzalez-Dugo
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Córdoba, Spain
| | - P R J North
- Department of Geography, Swansea University, Swansea, UK
| | - B B Landa
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Córdoba, Spain
| | - D Boscia
- CNR, Istituto per la Protezione Sostenibile delle Piante, Bari, Italy
| | - M Saponari
- CNR, Istituto per la Protezione Sostenibile delle Piante, Bari, Italy
| | - J A Navas-Cortes
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas, Córdoba, Spain
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Huang CC, Tchetgen ET, Becerra MC, Cohen T, Galea J, Calderon R, Yataco R, Contreras C, Zhang ZB, Lecca L, Murray M. Cigarette smoking among tuberculosis patients increases risk of transmission to child contacts. Int J Tuberc Lung Dis 2014; 18:1285-91. [DOI: 10.5588/ijtld.14.0309] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Perrin MC, Terry MB, Kleinhaus K, Deutsch L, Yanetz R, Tiram E, Calderon R, Friedlander Y, Paltiel O, Harlap S. Gestational diabetes as a risk factor for pancreatic cancer: a prospective cohort study. BMC Med 2007; 5:25. [PMID: 17705823 PMCID: PMC2042496 DOI: 10.1186/1741-7015-5-25] [Citation(s) in RCA: 40] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2006] [Accepted: 08/16/2007] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Diabetes is known to be associated with cancer of the pancreas, though there is some debate as to whether it is a cause or a consequence of the disease. We investigated the incidence of pancreatic cancer in a cohort of 37926 Israeli women followed for 28-40 years for whom information on diabetes had been collected at the time they gave birth, in 1964-1976, in Jerusalem. There were 54 cases of pancreatic cancer ascertained from the Israel Cancer Registry during follow-up. METHODS We used Cox proportional hazards models to adjust for age at baseline and explore effects of other risk factors, including ethnic groups, preeclampsia, birth order and birth weight of offspring. RESULTS We observed no cases of pancreatic cancer in the women with insulin dependent diabetes; however, there were five cases in the women with gestational diabetes. The interval between the record of diabetes in pregnancy and the diagnosis of pancreatic cancer ranged from 14-35 years. Women with a history of gestational diabetes showed a relative risk of pancreatic cancer of 7.1 (95% confidence interval, 2.8-18.0). CONCLUSION We conclude that gestational diabetes is strongly related to the risk of cancer of the pancreas in women in this population, and that gestational diabetes can precede cancer diagnosis by many years.
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Affiliation(s)
- MC Perrin
- Department of Psychiatry, School of Medicine, New York University, 550 1st Avenue, New York, NY 10017, USA
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, New York, NY 10032, USA
| | - MB Terry
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, New York, NY 10032, USA
| | - K Kleinhaus
- New York State Psychiatric Institute, 1051 Riverside Avenue, New York, NY 10032, USA
| | - L Deutsch
- Unit of Epidemiology, The Hebrew University-Hadassah School of Public Health, Ein Kerem, Jerusalem, 91120, Israel
| | - R Yanetz
- Unit of Epidemiology, The Hebrew University-Hadassah School of Public Health, Ein Kerem, Jerusalem, 91120, Israel
| | - E Tiram
- Unit of Epidemiology, The Hebrew University-Hadassah School of Public Health, Ein Kerem, Jerusalem, 91120, Israel
| | - R Calderon
- Unit of Epidemiology, The Hebrew University-Hadassah School of Public Health, Ein Kerem, Jerusalem, 91120, Israel
| | - Y Friedlander
- Unit of Epidemiology, The Hebrew University-Hadassah School of Public Health, Ein Kerem, Jerusalem, 91120, Israel
| | - O Paltiel
- Unit of Epidemiology, The Hebrew University-Hadassah School of Public Health, Ein Kerem, Jerusalem, 91120, Israel
| | - S Harlap
- Department of Psychiatry, School of Medicine, New York University, 550 1st Avenue, New York, NY 10017, USA
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168th Street, New York, NY 10032, USA
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12
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Harlap S, Friedlander Y, Barchana M, Calderon R, Deutsch L, Kleinhaus KR, Perrin MC, Tiram E, Yanetz R, Paltiel O. Late fetal death in offspring and subsequent incidence of prostate cancer in fathers: the Jerusalem Perinatal Study cohort. Prostate 2007; 67:989-98. [PMID: 17440938 DOI: 10.1002/pros.20591] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Little is known of the causes of prostate cancer and few previous studies have investigated men's reproductive histories in relation to this disease. We sought to determine whether risk of prostate cancer was altered in men who had fathered stillborn offspring. METHODS We studied the incidence of prostate cancer (N = 252) in a cohort of 15,268 fathers followed for 28-41 years from the birth of a live offspring, whose wives participated in one of two separate surveys of outcomes of previous births. Proportional hazards models were used to estimate relative risks (RR) associated with previous stillbirths, controlling for changes in incidence over time, social and occupational factors. RESULTS The 543 men with one or more stillborn offspring experienced an increased risk of prostate cancer (adjusted RR = 1.87, 95% confidence interval = 1.17-3.00, P = 0.0095), compared to men without stillbirths. With one reported stillbirth, the RR was 1.68 (0.99-2.84); with two or more, the RR was 3.29 (1.22-8.88). Results were consistent in men whose wives were interviewed in 1965-1968 and 1974-1976. In 100 fathers with no male offspring and at least one stillbirth the RR was 4.04 (1.87-8.71, P = 0.0004). CONCLUSIONS These findings should be considered hypothesis-generating and require confirmation in other studies. They suggest that stillbirth and prostate cancer may have shared environmental causes; alternatively, genetic susceptibility to prostate cancer might increase the risk of a stillbirth in offspring.
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Affiliation(s)
- S Harlap
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY 10032, USA.
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13
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Paltiel O, Friedlander Y, Deutsch L, Yanetz R, Calderon R, Tiram E, Hochner H, Chana MB, Harlap S, Manor O. 061: Time Interval Between the Diagnosis of Cancer in Mothers and Offspring in the Jerusalem Perinatal Study (JPS) Cohort. Am J Epidemiol 2005. [DOI: 10.1093/aje/161.supplement_1.s16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- O Paltiel
- School of Public Health, Hadassah-Hebrew University, Jerusalem, Israel 91120
| | - Y Friedlander
- School of Public Health, Hadassah-Hebrew University, Jerusalem, Israel 91120
| | - L Deutsch
- School of Public Health, Hadassah-Hebrew University, Jerusalem, Israel 91120
| | - R Yanetz
- School of Public Health, Hadassah-Hebrew University, Jerusalem, Israel 91120
| | - R Calderon
- School of Public Health, Hadassah-Hebrew University, Jerusalem, Israel 91120
| | - E Tiram
- School of Public Health, Hadassah-Hebrew University, Jerusalem, Israel 91120
| | - H Hochner
- School of Public Health, Hadassah-Hebrew University, Jerusalem, Israel 91120
| | - M Bar Chana
- School of Public Health, Hadassah-Hebrew University, Jerusalem, Israel 91120
| | - S Harlap
- School of Public Health, Hadassah-Hebrew University, Jerusalem, Israel 91120
| | - O Manor
- School of Public Health, Hadassah-Hebrew University, Jerusalem, Israel 91120
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Mundo-Sagardia JA, Johnson C, Calderon R, Quintana C. 81 PATIENT WITH COMPLICATED AORTIC DEFORMITIES IN ASSOCIATION WITH AN ATRIAL SEPTAL DEFECT AND INFECTIVE ENDOCARDITIS. J Investig Med 2005. [DOI: 10.2310/6650.2005.00006.80] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Schneider RH, Castillo-Richmond A, Alexander CN, Myers H, Kaushik V, Aranguri C, Norris K, Haney C, Rainforth M, Calderon R, Nidich S. Behavioral treatment of hypertensive heart disease in African Americans: rationale and design of a randomized controlled trial. Behav Med 2002; 27:83-95. [PMID: 11763829 DOI: 10.1080/08964280109595775] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
African Americans experience higher morbidity and mortality than Whites do as a result of hypertension and associated cardiovascular disease. Chronic psychosocial stress has been considered an important contributing factor to these high rates. The authors describe the rationale and design for a planned randomized controlled trial comparing Transcendental Meditation, a stress-reduction technique, with lifestyle education in the treatment of hypertension and hypertensive heart disease in urban African Americans. They pretested 170 men and women aged 20 to 70 years over a 3-session baseline period, with posttests at 6 months. Outcomes included clinic and ambulatory blood pressure, quality of life, left ventricular mass measured by M-mode echocardiography, left ventricular diastolic function measured by Doppler, and carotid atherosclerosis measured by beta-mode ultrasound. This trial was designed to evaluate the hypothesis that a selected stress reduction technique is effective in reducing hypertension and hypertensive heart disease in African Americans.
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16
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Peña JA, Calderon R, Perez-Miranda A, Vidales C, Dugoujon JM, Carrion M, Crouau-Roy B. Microsatellite DNA markers from HLA region (D6S105, D6S265 and TNFa) in autochthonous Basques from Northern Navarre (Spain). Ann Hum Biol 2002; 29:176-91. [PMID: 11874622 DOI: 10.1080/03014460110075675] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND The extent of the genetic polymorphism of the HLA complex is becoming well characterized in Basque population and their subpopulations. This level of knowledge mainly concerns HLA class I loci. However, Basque population surveys dealing with HLA class II genes and/or microsatellites in the HLA region are still very scarce. AIM The population genetics of three highly polymorphic short tandem repeat (STR) loci, D6S105, D6S265 and TNFa, from HLA region has been analysed in autochthonous (indigenous) Basques from Northern Navarre (Spain). The same blood samples have been typed for HLA class II genes from DQ/DR/DP regions and some findings from that information can be found therein. SUBJECTS AND METHODS Blood samples were taken from 107 unrelated autochthonous Basques from Northern Navarre. The criterion used to define Northern Navarrese identity was that of three generations of Basque surnames and birthplaces. RESULTS The main features observed in Navarrese Basques were the rather high frequencies of alleles D6S105*4 and D6S265*7. A novel allele has been detected at the D6S265 locus (13: 145 bp). The most frequent haplotype was D6S105*8-D6S265*4 with a highly significant linkage disequilibrium being presented. The high frequency of allele TNFa*1 in Basques is noteworthy and this characteristic is not shared by other European populations, where TNFa*1 is absent or shows negligible values. The multidimensional scaling analysis (MDS) for TNFa allele frequencies has shown a high variability among populations and that alleles TNFa*1 (F(ST) = 0.0615) and TNFa*12 (F(ST) = 0.0424) seem to have significant influence over the spatial population configuration. TNFa*2 showed the lowest FST value (0.0077) because of its conspicuous homogeneous distribution all over the European populations. CONCLUSIONS Findings shown here on HLA microsatellites and their relationships with other HLA class I and class II genes in Basques can be helpful for those studies mainly addressed at detecting associations between HLA genes and diseases in the Basque area as a whole, and particularly in its autochthonous population, settled there since remote times.
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Affiliation(s)
- J A Peña
- Departamento de Biología Animal y Genética, Unidad de Antropología Física, Universidad del País Vasco, 48080 Bilbao, Spain.
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17
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Abstract
The emergence of tics in children treated with stimulant medication for attention deficit hyperactivity disorder (ADHD) was investigated. A retrospective chart review of the medical records of 555 subjects was performed to examine the emergence of tics in relation to treatment with a stimulant medication, dosage, duration of treatment, and age of subjects. A total of 7.8% of the subjects treated with stimulants developed tics: 8.3% of subjects treated with methylphenidate, 6.3% with dextroamphetamine, and 7.7% with pemoline. The subjects who developed tics were significantly younger than those who did not. Subjects treated with higher doses of stimulant medication were not more likely to develop tics. While the emergence of tics was common, these subjects may have developed tics irrespective of stimulant medication. Controversy remains as to the long-term risk of tics in relation to stimulant medication and to appropriate practice should tics emerge during the course of stimulant medication treatment.
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Affiliation(s)
- C K Varley
- Division of Child and Adolescent Psychiatry, Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, USA
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18
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Calderon R, Schneider RH, Alexander CN, Myers HF, Nidich SI, Haney C. Stress, stress reduction and hypercholesterolemia in African Americans: a review. Ethn Dis 2001; 9:451-62. [PMID: 10600068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023] Open
Abstract
Psychological stress may directly contribute to the disproportionately high rates of coronary heart disease morbidity and mortality and its etiologic risk factors in African Americans. Specifically, acute and chronic stress have been shown to raise serum lipids and are associated with clinical coronary events. The mechanisms by which stress contributes to alterations in lipid levels are not fully known, but various pathways (ie, hormonal, dietary, etc) have been implicated. Traditional methods for reducing blood serum lipids include diet, drugs or both. These methods have been criticized because of issues of compliance, side effects, and cost. Because of these limitations, nondrug behavioral methods are recommended by the National Cholesterol Education Program as the first line of prevention and treatment for hypercholesterolemia and other risk factors. Research shows that CHD morbidity and mortality and major risk factors may be modifiable by behavioral intervention. Specifically, the Transcendental Meditation technique, an effective antidote to stress, reduces levels of major CHD risk factors including hypercholesterolemia, as well as blood pressure and smoking. Using an effective stress reduction approach for prevention and treatment of CHD and its risk factors in African Americans may prove to be a valuable asset for this underserved population.
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Affiliation(s)
- R Calderon
- Department of Psychology, Maharishi University of Management. College of Vedic Medicine, Fairfield, IA 52557, USA
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Calderon R. Parental Involvement in Deaf Children's Education Programs as a Predictor of Child's Language, Early Reading, and Social-Emotional Development. J Deaf Stud Deaf Educ 2000; 5:140-155. [PMID: 15454509 DOI: 10.1093/deafed/5.2.140] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This study examined the impact of school-based, teacher-rated parental involvement on four child outcomes: language development, early reading skills, and positive and negative measures of social-emotional development. The 28 children were assessed for outcomes between 9 to 53 months post-graduation from a birth-to-3 early intervention (EI) program for children with hearing loss. Other factors included in the study were child's hearing loss, mother's education level, mother's current communication skills with her child, and maternal use of additional services beyond those offered by the early intervention program or the child's school program. Parental involvement in children's school-based education program is a significant positive predictor to early reading skills but shares considerable variance with maternal communication skill for this outcome. In this study, maternal communication skills and the child's hearing loss were the strongest predictors for language development. Maternal use of additional services was the strongest predictor to poorer social-emotional adjustment. The study's findings indicate that although parental involvement in their deaf child's school-based education program can positively contribute to academic performance, parental communication skill is a more significant predictor for positive language and academic development. Factors associated with parental involvement, maternal communication, and use of additional services are explored and suggestions are offered to enhance parental involvement and communication skills.
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Affiliation(s)
- R Calderon
- Psychiatry and Behavioral Sciences, University of Washington, Box 359300, CH-13, Seattle, WA 98195
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20
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Calderon R, Greenberg MT. Stress and coping in hearing mothers of children with hearing loss: factors affecting mother and child adjustment. Am Ann Deaf 1999; 144:7-18. [PMID: 10230078 DOI: 10.1353/aad.2012.0153] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The present study examines maternal and child adjustment as a result of the application of a stress and coping model (Folkman, Schaefer, & Lazarus 1979) to factors associated with having a school-aged child with a hearing loss. Thirty-six hearing mothers of children with hearing loss participated in the study. Information was gathered through parent and teacher questionnaires and home interviews and observations. Results indicated that (a) social support emerged as an important predictor of maternal adjustment as well as a buffer between current life stress and maternal adjustment, and (b) maternal problem-solving skill emerged as a significant predictor of child adjustment and as a mediating factor between child's age and teacher rating of child adjustment. The discussion focuses on possible explanations for these findings, the utility of a competency-based rather than psychopathology-based perspective in understanding parent and child outcomes, and implications for intervention strategies.
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Affiliation(s)
- R Calderon
- Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, USA
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21
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Calderon R, Bargones J, Sidman S. Characteristics of hearing families and their young deaf and hard of hearing children. Early intervention follow-up. Am Ann Deaf 1998; 143:347-362. [PMID: 9842062 DOI: 10.1353/aad.2012.0100] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Children with hearing loss are at risk for outcomes below their potential despite institution of educational approaches at increasingly younger ages. Research suggests some benefits of early intervention (EI) for these children and their families. However, previous investigators have not delineated broader family, child, and program variables that warrant consideration in understanding the role, success, and limitations of EI. The present study involved 28 hearing families and their children with hearing impairments aged 42 to 87 months, 9 to 42 months postgraduation from an EI program. The information gathered included demographics, duration and intensity of the EI, parent involvement, and educational and communication choices. Results provide a descriptive profile of children with hearing loss and their hearing families from EI through the preschool years. The discussion reflects upon EI in the context of this population's significant heterogeneity. Complex and confounding factors are presented that may affect children's and families' short- or long-term progress and the goals of EI.
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Affiliation(s)
- R Calderon
- Psychiatric Services for Deaf & Hard-of-Hearing Children, Children's Hospital & Regional Medical Center, Seattle, USA
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22
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Calderon R, Low S. Early social-emotional, language, and academic development in children with hearing loss. Families with and without fathers. Am Ann Deaf 1998; 143:225-234. [PMID: 9680729 DOI: 10.1353/aad.2012.0115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
As a group, children with significant hearing loss are at greater risk than other children for outcomes far below their potential, despite the institution of various educational approaches at increasingly earlier ages. Research suggests some benefits of early intervention for deaf children and their families. However, there remains a paucity of research into how family variables may affect child outcomes. The present study investigated the effect of paternal presence or absence on the social-emotional, language, and academic outcomes of 22 deaf and hard of hearing children ages 43-83 months. The children had graduated anywhere from 9 to 47 months earlier from an early intervention program for deaf and hard of hearing children 3 years of age or younger. Results indicated that children whose father is present have significantly better academic and language outcomes than those without a father present. Possible explanations for the findings are discussed, as well as implications of these findings for services offered by early intervention programs.
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Affiliation(s)
- R Calderon
- Psychiatric Services for Deaf and Hard-of-Hearing Children, Childrens Hospital & Medical Center, University of Washington School of Medicine, Seattle, USA
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Mastana SS, Calderon R, Pena J, Reddy PH, Papiha SS. Anthropology of the apoplipoprotein E (apo E) gene: low frequency of apo E4 allele in Basques and in tribal (Baiga) populations of India. Ann Hum Biol 1998; 25:137-43. [PMID: 9533513 DOI: 10.1080/03014469800005512] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The distribution of apolipoprotein E (apo E) polymorphism was examined in 11 population groups not previously studied for this system. There is a marked difference in phenotype and gene frequency between the populations of England and Spain. The south European populations of Basques and Spanish non-Basques showed greater similarity to the populations of South Asia. The study clearly indicates that the distribution of apo E alleles does match with regions showing a high mortality rate of coronary heart disease. The data presented also indicate that authochthon groups such as Basques in Europe and tribals in India may throw better light on the role of apolipoproteins in the regulation of lipid levels in disease.
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Papiha SS, Calderon R, Sertedaki A, Pena J, Zhong Y, Chakraborty R. Study of three hypervariable DNA loci (D1S7; D7S22 and D12S11) in three European populations. Ann Hum Biol 1998; 25:29-41. [PMID: 9483206 DOI: 10.1080/03014469800005412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
To investigate the population genetic characteristics and genetic affinity, DNA profiles of three highly polymorphic VNTR (variable number of tandem repeats) loci (D1S7; D7S22 and D12S11) were studied in 405 individuals from three major European populations (English, Spanish and Basques). Like other studies on VNTRs, a large significant heterozygote deficiency was observed in all three populations. This decrease was ascribed to the limitation, coalescence and non-detectibility of alleles associated with the RFLP (restriction fragment length polymorphism) technique, through which the VNTR loci are genotyped. When the non-detectable alleles were taken into consideration, analyses of fragment sizes at these loci within each sample, as well as their fixed binned analyses, reveal that the assumptions of independence of allelelic occurrences within and between loci are valid for this European data. By comparing genetic variation at three VNTR loci with 17 blood groups, proteins and HLA loci in three well defined European populations, it is shown that the pattern of differentiation at these sets of loci are in general parallel especially for the hypervariable loci HLA and VNTR. Fixed-bin allele frequencies, therefore, are the best descriptions of such a database both for population genetic and forensic calculation studies. The Basques, with regard to VNTR loci, do not show any reduced genetic variability compared to other two European populations (English and Spanish).
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Affiliation(s)
- S S Papiha
- Department of Human Genetics, University of Newcastle upon Tyne, UK
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25
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Varley CK, Calderon R, Vincent JG, Hacker L. A survey of child and adolescent psychiatry residents : demographic characteristics, program selection factors, training satisfaction, and career choice. Acad Psychiatry 1996; 20:15-25. [PMID: 24449183 DOI: 10.1007/bf03341957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This study attempted to discover how child and adolescent psychiatry residents chose their training programs, what they intended to do with their careers, and how they perceived their educational experiences. The survey was distributed to all psychiatry residents in the United States through their training directors in 1990. The authors received 310 responses. Significant differences were noted between male and female residents. Most residents expressed an intention to go into private practice after training. There were significant differences in residents interested in private practice vs. academic careers. The residents had applied to comparatively few programs and made training decisions early. The study generated objective information that may yield more specific recruitment strategies for child and adolescent psychiatry.
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Affiliation(s)
- C K Varley
- Department of Child Psychiatry, CL-09, University of Washington, Highline Mental Health Center in Seattle, Children's Hospital and Medical Center, Post Office Box C-6371, Seattle, WA, 98105, USA
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Abstract
OBJECTIVE This project was designed to provide prospective data on the clinical presentation and longitudinal course of depression in children and adolescents. METHOD Children and their parent(s) completed a structured diagnostic interview (Schedule for Affective Disorders and Schizophrenia for School Age Children) at intake, and then yearly for 3 years. Collateral data were collected on school, social, and family functioning. RESULTS Mean length of initial depressive episode was 35.6 weeks, SD of 26 weeks. Of the 65 depressed youths who completed the 3-year follow-up, 35 (54%) disclosed another episode of depression. Demographic, family-environment, and diagnostic variables were explored as predictors of characteristics of initial episode, recurrence of depression, and psychosocial competence at follow-up. Female gender and presence of a coexisting anxiety disorder were significantly related to severity of initial depression. Family environment was the only predictor significantly related to overall psychosocial competence over 3 years. CONCLUSIONS The findings confirm depression in youth as a valid clinical phenomenon, with substantial risk of recurrence. Increased levels of stress in the family environment were associated with poorer overall outcomes.
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Affiliation(s)
- E McCauley
- Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle
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27
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Abstract
HLA antigen and gene frequencies at the A, B, and C loci are examined in a sample of 181 Basques and 102 non-Basques in Bilbao, Spain. The most common associations of genes at the A and B loci are as in western Europe generally. The results are compared with gene frequencies in other Basque and non-Basque samples in Spain and France. There is clear distinction in gene frequency between Basques and non-Basques, to which the greatest contribution is made by A1 and B35, followed by B7, B8 and B12; and a difference between Basques in France and in Spain, notably in A28, 29, 30 and 31 and B17 and 18.
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Affiliation(s)
- R Calderon
- Departamento de Biologia Animal y Genetica, Universidad del Pais Vasco, Bilbao, Spain
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Myers K, McCauley E, Calderon R, Treder R. The 3-year longitudinal course of suicidality and predictive factors for subsequent suicidality in youths with major depressive disorder. J Am Acad Child Adolesc Psychiatry 1991; 30:804-10. [PMID: 1938798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This study followed the course of suicidal thoughts and behaviors in youths 7 to 17 years of age who recently experienced an episode of major depression. Suicidal was expressed by 72% of the youths at some time during the study. These predominantly outpatient youths tended to be suicidal on multiple occasions, but their severity of suicidality did not increase over time. Three variables at presentation predicted later suicidality: severity of initial suicidality, anger, and age. These results suggest that milder forms of suicidality represent a feature of depression rather than characterizing a subgroup of high-risk depressed youths. The results also suggest that suicidality and anger may mark a predominantly irritable form of depression as youths mature.
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Affiliation(s)
- K Myers
- Division of Child Psychiatry, Children's Hospital and Medical Center, Seattle, WA 98105
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Abstract
The question of whether somatic complaints are a significant feature of depression independent of anxiety was explored. Structured interview (Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Children) and Child Behavior Checklist data from depressed and nondepressed psychiatric controls were analyzed to explore the interaction of somatic complaints, anxiety, and depression. Seventy percent of the children who met criteria for depression also had significant somatic complaints in contrast to 34% of the controls. Findings revealed that frequency of somatic complaints increased with severity of depression regardless of coexisting anxiety.
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Affiliation(s)
- E McCauley
- University of Washington/Children's Hospital and Medical Center, Seattle 98105
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Calderon R, Vidales C, Rebato E, Peña JA. ABH antigen secretion in Basques and the spatial variation pattern of the secretor locus in Spain. Gene Geogr 1991; 5:61-8. [PMID: 1820157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Secretion of the ABH blood group antigen was analyzed in 305 saliva samples of students in the Basque Country University. The frequency of ABH non-secretor was 26.23%, a result very close to that obtained in autoctonous Basques (22-23%) and in other populations from the West (Galicia) and Centre (Castille) of Spain. With certain exceptions, the frequencies of non-secretor se allele present a fairly homogeneous variability pattern and no significant spatial orientation or tendencies of se gene distribution are observed in the Iberian Peninsula.
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Affiliation(s)
- R Calderon
- Department of Animal Biology and Genetics, Faculty of Sciences, Basque Country University, Bilbao, Spain
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Abstract
This investigation developed a hierarchical multiple regression model to assess the potential risk factors for suicidality in youths 7 to 17 years old. Variables were assessed in three domains: self-perceptions, demography and diagnosis, and home/environment. The model controlled for major depressive disorder (MDD), which has confounded previous investigations, by evaluating potential risks in a diagnostically heterogenous sample, and then evaluating these risks in a subsample with MDD. Conduct problems and depressive thinking emerged as the most powerful predictors in both samples. Hopelessness, life stress, and maternal psychopathology predicted suicidality only in the total sample. Separation anxiety protected MDD youths. These results suggest that suicidal MDD youths may comprise a distinct subgroup of depressed youths.
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Affiliation(s)
- K Myers
- Group Health Cooperative of Puget Sound, Seattle, WA
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Smith MS, Mitchell J, McCauley EA, Calderon R. Screening for anxiety and depression in an adolescent clinic. Pediatrics 1990; 85:262-6. [PMID: 2304778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The Spielberger State-Trait Anxiety Inventory (STAI) and the Children's Depression Inventory (CDI) were administered to 228 consecutive adolescent clinic patients and provisional physician diagnoses were compared with test scores obtained in 205 valid replies. The age range was 10 to 17 with a mean +/- SD of 14.3 +/- 1.8 years. Racial distribution was 176 white, 21 black, 4 Asian, and 4 other. The provisional diagnoses were categorized as follows: medical diagnosis only, 140; psychiatric diagnosis only, 45; and combined medical/psychiatric diagnosis, 20. Mean scores +/- SD for the entire study population were STAI-State 41.1 +/- 10.9, STAI-Trait 41.3 +/- 11.8, and CDI 10.1 +/- 8.3. Odds ratios showed that patients with only a psychiatric diagnosis had higher STAI scores than those with only a medical diagnosis and those with a combined medical/psychiatric diagnosis; patients with only a psychiatric diagnosis and those with a combined medical/psychiatric diagnosis had higher CDI scores than those with only a medical diagnosis. The medical records of 30 patients in the medical diagnosis category with high STAI and CDI scores were reviewed; of 140 patients with medical diagnoses, screening detected 15 patients (10.7%) who warranted further intervention for psychiatric disorders.
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Affiliation(s)
- M S Smith
- University of Washington School of Medicine, Seattle
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Abstract
Records of 182 consecutive patients with the diagnosis of operable osteogenic sarcoma, treated between 1954 through 1980 by the Breast, Bone and Mixed Tumors Department of the Instituto Nacional de Enfermedades Neoplasicas (Lima, Peru), were reviewed to study the incidence of regional lymph node metastases in this disease. All the patients included in this study had radical surgery, which means the complete resection of the bone where the tumor is located, including the proximal joint, which permitted excision of the regional lymph nodes. Nineteen patients (10.4%) had evidence of sarcoma metastatic to draining lymph nodes. A comprehensive analysis of the literature shows that the incidence of metastasis to the lymph nodes in this study, is higher than those cited in a review of the literature, probably due to the policy in the management of osteogenic sarcoma in our institution, during the period of study.
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Affiliation(s)
- E Caceres
- Instituto Nacional de Enfermedades Neoplásicas, Lima, Peru
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Calderon R. Consanguinity in the Archbishopric of Toledo, Spain, 1900-79. I. Types of consanguineous mating in relation to premarital migration and its effects on inbreeding levels. J Biosoc Sci 1989; 21:253-66. [PMID: 2670948 DOI: 10.1017/s002193200001796x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This study, the first of a series on consanguinity in the Archbishopric of Toledo from 1900 to 1979, analyses in detail the types of consanguineous mating in a population of considerable size, some 650,000 persons, in Central Spain. During the period covered, very important transformations occurred in Spanish society. The data relate to 21,464 consanguineous marriages. They were divided into two groups, according to the premarital migration of the couple. Significant differences in the frequencies of the types of consanguineous matings, and their secular evolution, are found for the two groups. The expected trend in inbreeding in the total area shows two different tendencies: constancy till the end of the 1950s, followed by a fast decline during the last two decades.
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Abstract
One hundred and seventeen biological mothers and 63 biological fathers of depressed and nondepressed, psychiatrically disturbed children and adolescents were interviewed with the Schedule for Affective Disorders and Schizophrenia-Lifetime Version. Diagnostic information was also obtained on 54 biological fathers who were unavailable for interview. Histories of depressive disorders and other forms of psychopathology were reported at high rates in the parents. Major depression was the most commonly reported disorder in interviewed parents of both sexes, but it was reported more often in mothers. Substance abuse and antisocial pathology was more prevalent in fathers. Depression in parents did not distinguish depressed from nondepressed probands, but maternal history of anxiety disorders, alcoholism and/or drug abuse, and suicidality did. Depressed probands were more likely than their nondepressed peers to have two parents with histories of depression. Mothers of younger patients had more substance abuse and suicidality in their histories than mothers of adolescents. They also reported earlier age of onset of depression and earlier age of entry into treatment.
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Patterson J, Calderon R, Dumigan D, Mangi R, Hierholzer W. Nosocomial legionellosis associated with a localized obstruction in a hospital water supply. Am J Infect Control 1987. [DOI: 10.1016/0196-6553(87)90043-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Serena A, Aliaga L, Richter JA, Calderon R, Sanchez L, Charvet MA. Scintigraphic demonstration of a diaphragmatic defect as the cause of massive hydrothorax in cirrhosis. Eur J Nucl Med 1985; 11:46-8. [PMID: 4043113 DOI: 10.1007/bf00440961] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A 64-year-old man presented with a massive right-sided hydrothorax associated with cirrhosis of the liver. There was no clinical evidence of ascites nor other underlying disease. The usual complementary tests failed to demonstrate any causative abnormality. Chest and abdominal scintigraphy after intraperitoneal injection of 99mTc-human serum albumin disclosed early filling of the pleural space by the radiopharmaceutical and suggested a diaphragmatic defect as the cause for this rare association.
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Greenberg MT, Calderon R, Kusché C. Early intervention using simultaneous communication with deaf infants: the effect on communication development. Child Dev 1984; 55:607-16. [PMID: 6723450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
This report presents findings on an independent evaluation of an early intervention program for severely and profoundly deaf children. Located in Vancouver, British Columbia, this comprehensive program served families with children under age 3. The evaluation included comparison with a matched sample of deaf children without intervention. Included were a developmental assessment and videotape of linguistic and social interactions. Results indicated more developmentally mature communication and higher-quality interaction in families who had received intervention.
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Abstract
The natural region of the Jara, with an area of 2500 km2 occupies much of the south west of the province of Toledo, and extends into the provinces of Caceres and Ciudad Real. It is situated between the Tajo and Guadiana rivers, south of the town of Talavera de la Reina, the centre of the economic life in this region. Its highlands are covered with xerophytic vegetation, of which the most common plant is the jara (Cistus ladaniferus), from which this zone takes it name, (Fig. 1). It has been occupied from the neolithic period onwards by peoples of different origins, e.g. Romans, Muslims, Jews, Mozarabs (Jimenez de Gregorio, 1959) but the present population derives from settlement from the north of the Tajo river beginning in the 14th century following the upheavals of the Moslem–Christian wars.
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Abstract
In an effort to determine if bacterial water quality was related to the incidence of otitis externa (swimmer's ear), a retrospective study was conducted from July, 1980 to September, 1980. Data from 29 cases and 29 controls matched for age and sex were collected. Warm air, warm water, age of less than 18 yr, swimming, and length of time spent swimming were associated positively with cases of otitis externa. Water quality, as measured by fecal coliforms, enterococci, and Pseudomonas aeruginosa was not found to be associated with otitis externa.
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Calderon R. [Hypoaldosteronism: a new clinical entity]. Rev Soc Peru Endocrinol 1965; 2:1-2. [PMID: 5847377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Calderon R, Arnao J. [Determination of the reserve of the thyrotropic hormone]. Rev Soc Peru Endocrinol 1965; 2:75-8. [PMID: 5847382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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