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Bourdon C, Etain B, Spano L, Belzeaux R, Leboyer M, Delahaye-Duriez A, Ibrahim EC, Lutz PE, Gard S, Schwan R, Polosan M, Courtet P, Passerieux C, Bellivier F, Marie-Claire C. Accelerated aging in bipolar disorders: An exploratory study of six epigenetic clocks. Psychiatry Res 2023; 327:115373. [PMID: 37542794 DOI: 10.1016/j.psychres.2023.115373] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/18/2023] [Accepted: 07/24/2023] [Indexed: 08/07/2023]
Abstract
Bipolar disorder (BD) is a chronic and severe psychiatric disorder associated with significant medical morbidity and reduced life expectancy. In this study, we assessed accelerated epigenetic aging in individuals with BD using various DNA methylation (DNAm)-based markers. For this purpose, we used five epigenetic clocks (Horvath, Hannum, EN, PhenoAge, and GrimAge) and a DNAm-based telomere length clock (DNAmTL). DNAm profiles were obtained using Infinium MethylationEPIC Arrays from whole-blood samples of 184 individuals with BD. We also estimated blood cell counts based on DNAm levels for adjustment. Significant correlations between chronological age and each epigenetic age estimated using the six different clocks were observed. Following adjustment for blood cell counts, we found that the six epigenetic AgeAccels (age accelerations) were significantly associated with the body mass index. GrimAge AgeAccel was significantly associated with male sex, smoking status and childhood maltreatment. DNAmTL AgeAccel was significantly associated with smoking status. Overall, this study showed that distinct epigenetic clocks are sensitive to different aspects of aging process in BD. Further investigations with comprehensive epigenetic clock analyses and large samples are required to confirm our findings of potential determinants of an accelerated epigenetic aging in BD.
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Affiliation(s)
- Céline Bourdon
- Université Paris Cité, Inserm, Optimisation Thérapeutique en Neuropsychopharmacologie, F-75006 Paris, France.
| | - Bruno Etain
- Université Paris Cité, Inserm, Optimisation Thérapeutique en Neuropsychopharmacologie, F-75006 Paris, France; Département de Psychiatrie et de Médecine Addictologique, Hôpitaux Lariboisière-Fernand Widal, GHU APHP.Nord - Université de Paris, Paris, F-75010, France; Fondation Fondamental, F-94010, Créteil, France
| | - Luana Spano
- Université Paris Cité, Inserm, Optimisation Thérapeutique en Neuropsychopharmacologie, F-75006 Paris, France
| | - Raoul Belzeaux
- Pôle Universitaire de Psychiatrie, CHU de Montpellier, France; Pôle de Psychiatrie, Assistance Publique Hôpitaux de Marseille, INT-UMR7289, CNRS Aix-Marseille Université, Marseille, France; Université Paris Est Créteil, INSERM U955, IMRB, Translational Neuro-Psychiatry, Créteil, France
| | - Marion Leboyer
- Fondation Fondamental, F-94010, Créteil, France; Université Paris Est Créteil, INSERM U955, IMRB, Translational Neuro-Psychiatry, Créteil, France; AP-HP, Hôpitaux Universitaires Henri Mondor, Département Médico-Universitaire de Psychiatrie et d'Addictologie (DMU IMPACT), Fédération Hospitalo-Universitaire de Médecine de Précision en Psychiatrie (FHU ADAPT), Créteil, France
| | | | - El Chérif Ibrahim
- Aix-Marseille Univ, CNRS, INT, Inst Neurosci Timone, 13005 Marseille, France
| | - Pierre-Eric Lutz
- Centre National de la Recherche Scientifique, Université de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg, Institut des Neurosciences Cellulaires et Intégratives UPR3212, F-67000 Strasbourg, France
| | - Sébastien Gard
- Fondation Fondamental, F-94010, Créteil, France; Pôle de Psychiatrie Générale et Universitaire, Centre Hospitalier Charles Perrens, Bordeaux, France
| | - Raymund Schwan
- Fondation Fondamental, F-94010, Créteil, France; Université de Lorraine, Centre Psychothérapique de Nancy, Inserm U1254, Nancy, France
| | - Mircea Polosan
- Fondation Fondamental, F-94010, Créteil, France; Univ. Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble, Institut Neurosciences, Grenoble, France
| | - Philippe Courtet
- Fondation Fondamental, F-94010, Créteil, France; IGF, Univ. Montpellier France, CNRS, INSERM, Montpellier, France; Department of Emergency Psychiatry and Acute Care, Lapeyronie Hospital, CHU Montpellier, Montpellier, France
| | - Christine Passerieux
- Fondation Fondamental, F-94010, Créteil, France; Centre Hospitalier de Versailles, Service Universitaire de Psychiatrie d'adulte et d'addictologie, Le Chesnay, France; DisAP-DevPsy-CESP, INSERM UMR1018, Université de Versailles Saint-Quentin-En-Yvelines, Université Paris-Saclay, Villejuif, France
| | - Frank Bellivier
- Université Paris Cité, Inserm, Optimisation Thérapeutique en Neuropsychopharmacologie, F-75006 Paris, France; Département de Psychiatrie et de Médecine Addictologique, Hôpitaux Lariboisière-Fernand Widal, GHU APHP.Nord - Université de Paris, Paris, F-75010, France; Fondation Fondamental, F-94010, Créteil, France
| | - Cynthia Marie-Claire
- Université Paris Cité, Inserm, Optimisation Thérapeutique en Neuropsychopharmacologie, F-75006 Paris, France
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Horcas-Nieto JM, Versloot CJ, Langelaar-Makkinje M, Gerding A, Blokzijl T, Koster MH, Baanstra M, Martini IA, Coppes RP, Bourdon C, van Ijzendoorn SCD, Kim P, Bandsma RHJ, Bakker BM. Organoids as a model to study intestinal and liver dysfunction in severe malnutrition. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166635. [PMID: 36581145 DOI: 10.1016/j.bbadis.2022.166635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/02/2022] [Accepted: 12/20/2022] [Indexed: 12/27/2022]
Affiliation(s)
- José M Horcas-Nieto
- Laboratory of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Christian J Versloot
- Laboratory of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Miriam Langelaar-Makkinje
- Laboratory of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Albert Gerding
- Laboratory of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, the Netherlands; Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Tjasso Blokzijl
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Mirjam H Koster
- Laboratory of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Mirjam Baanstra
- Department of Biomedical Sciences of Cell & Systems, Section Molecular Cell Biology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Ingrid A Martini
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Robert P Coppes
- Department of Biomedical Sciences of Cell & Systems, Section Molecular Cell Biology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Céline Bourdon
- Translational Medicine, Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, ON, Canada
| | - Sven C D van Ijzendoorn
- Department of Biomedical Sciences of Cell & Systems, Section Molecular Cell Biology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Peter Kim
- Translational Medicine, Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, ON, Canada; Department of Biochemistry, University of Toronto, Toronto, ON, Canada
| | - Robert H J Bandsma
- Laboratory of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, the Netherlands; Translational Medicine, Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, ON, Canada; Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, ON, Canada; Division of Gastroenterology, Hepatology, and Nutrition, The Hospital for Sick Children, Toronto, ON, Canada.
| | - Barbara M Bakker
- Laboratory of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, the Netherlands.
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Billa PA, Faulconnier Y, Ye T, Bourdon C, Pires JAA, Leroux C. Nutrigenomic analyses reveal miRNAs and mRNAs affected by feed restriction in the mammary gland of midlactation dairy cows. PLoS One 2021; 16:e0248680. [PMID: 33857151 PMCID: PMC8049318 DOI: 10.1371/journal.pone.0248680] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 06/05/2020] [Accepted: 03/03/2021] [Indexed: 12/23/2022] Open
Abstract
The objective of this study was to investigate the effects of feed restriction on mammary miRNAs and coding gene expression in midlactation cows. Five Holstein cows and 6 Montbéliarde cows underwent 6 days of feed restriction, during which feed allowance was reduced to meet 50% of their net energy for lactation requirements. Mammary biopsies were performed before and at the end of the restriction period. Mammary miRNA and mRNA analyses were performed using high-throughput sequencing and microarray analyses, respectively. Feed restriction induced a negative energy balance and decreased milk production and fat and protein yields in both breeds. Feed restriction modified the expression of 27 miRNAs and 374 mRNAs in mammary glands from Holstein cows, whereas no significant miRNA change was observed in Montbéliarde cows. Among the 27 differentially expressed miRNAs, 8 miRNAs were associated with dairy QTL. Analysis of target genes indicate that the 8 most abundantly expressed miRNAs control transcripts related to lipid metabolism, mammary remodeling and stress response. A comparison between the mRNAs targeted by the 8 most strongly expressed miRNAs and 374 differentially expressed mRNAs identified 59 mRNAs in common. The bioinformatic analyses of these 59 mRNAs revealed their implication in lipid metabolism and endothelial cell proliferation. These effects of feed restriction on mammary miRNAs and mRNAs observed in Holstein cows suggest a potential role of miRNAs in mammary structure and lipid biosynthesis that could explain changes in milk production and composition.
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Affiliation(s)
- Pierre-Alexis Billa
- INRAE, Université Clermont Auvergne, VetAgro Sup, UMR Herbivores, Saint-Genès-Champanelle, France
| | - Yannick Faulconnier
- INRAE, Université Clermont Auvergne, VetAgro Sup, UMR Herbivores, Saint-Genès-Champanelle, France
| | - Tao Ye
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Centre National de la Recherche Scientifique, UMR7104, Institut National de la Santé et de la Recherche Médicale, U964, Université de Strasbourg, Illkirch, France
| | - Céline Bourdon
- INRAE, AgroParisTech, Université Paris-Saclay, UMR Génétique Animale et Biologie Intégrative, Jouy-en-Josas, France
| | - José A. A. Pires
- INRAE, Université Clermont Auvergne, VetAgro Sup, UMR Herbivores, Saint-Genès-Champanelle, France
| | - Christine Leroux
- INRAE, Université Clermont Auvergne, VetAgro Sup, UMR Herbivores, Saint-Genès-Champanelle, France
- * E-mail:
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Gkotsi A, Bourdon C, Robert C, Schuind F. Normative values of the DASH questionnaire in healthy individuals over 50 years of age. Hand Surg Rehabil 2021; 40:258-262. [PMID: 33636383 DOI: 10.1016/j.hansur.2020.12.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/07/2020] [Accepted: 12/11/2020] [Indexed: 11/25/2022]
Abstract
This study aimed to define the normative values of the DASH score in healthy individuals over 50 years of age. One hundred and twenty subjects equally representing both genders and six age categories (50-54, 55-59, 60-64, 65-69, 70-74 and 75-80 years), with no past medical history affecting the upper limb, were asked to complete the DASH questionnaire. A visual analogue scale for pain and an HAQ-DI questionnaire were also completed to confirm the absence of symptomatic untreated upper limb pathologies. In this series of a priori normal subjects, most had a DASH score greater than 0. Moreover, the DASH score was found to rise with age, with a statistically significant difference between women and men. The DASH questionnaire is widely accepted in the everyday medical practice as a tool to evaluate upper limb function. However, age adjustment of the DASH questionnaire is necessary to correctly evaluate the clinical status and progression of individuals over the age of 50.
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Affiliation(s)
- A Gkotsi
- Department of Orthopaedics and Traumatology, Cliniques Universitaires de Bruxelles, Hôpital Erasme, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium.
| | - C Bourdon
- Physiotherapy and Rehabilitation Department, Cliniques Universitaires de Bruxelles, Hôpital Erasme, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium
| | - C Robert
- Physiotherapy and Rehabilitation Department, Cliniques Universitaires de Bruxelles, Hôpital Erasme, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium
| | - F Schuind
- Department of Orthopaedics and Traumatology, Cliniques Universitaires de Bruxelles, Hôpital Erasme, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium
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Tallec K, Paul-Pont I, Petton B, Alunno-Bruscia M, Bourdon C, Bernardini I, Boulais M, Lambert C, Quéré C, Bideau A, Le Goïc N, Cassone AL, Le Grand F, Fabioux C, Soudant P, Huvet A. Amino-nanopolystyrene exposures of oyster ( Crassostrea gigas) embryos induced no apparent intergenerational effects. Nanotoxicology 2021; 15:477-493. [PMID: 33555961 DOI: 10.1080/17435390.2021.1879963] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Early life stages (ELS) of numerous marine invertebrates mustcope with man-made contaminants, including plastic debris, during their pelagic phase. Among the diversity of plastic particles, nano-sized debris, known as nanoplastics, can induce effects with severe outcomes in ELS of various biological models, including the Pacific oyster Crassostrea gigas. Here, we investigated the effects of a sub-lethal dose (0.1 µg mL-1) of 50 nm polystyrene nanobeads (nano-PS) with amine functions on oyster embryos (24 h exposure) and we assessed consequences on larval and adult performances over two generations of oysters. Only a few effects were observed. Lipid analyses revealed that first-generation (G1) embryos exposed to nano-PS displayed a relative increase in cardiolipin content (+9.7%), suggesting a potential modification of mitochondrial functioning. G1-larvae issued from exposed embryos showed decreases in larval growth (-9%) and lipid storage (-20%). No effect was observed at the G1 adult stage in terms of growth, ecophysiological parameters (clearance and respiration rates, absorption efficiency), or reproductive outputs (gonadic development, gamete quality). Second generation (G2) larvae issued from control G1 displayed a significant growth reduction after G2 embryonic exposure to nano-PS (-24%) compared to control (as observed at the first generation), while no intergenerational effect was detected on G2 larvae issued from G1 exposed embryos. Overall, the present experimental study suggests a low incidence of a short embryonic exposure to nano-PS on oyster phenotypes along the entire life cycle until the next larval generation.
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Affiliation(s)
- K Tallec
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - I Paul-Pont
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - B Petton
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - M Alunno-Bruscia
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - C Bourdon
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - I Bernardini
- Dipartimento di Biomedicina Comparata e Alimentazione, Università degli Studi di Padova, Padova, Italy.,Department of Physical, Earth and Environmental Sciences, University of Siena, Siena, Italy
| | - M Boulais
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - C Lambert
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - C Quéré
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - A Bideau
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - N Le Goïc
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - A-L Cassone
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - F Le Grand
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - C Fabioux
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - P Soudant
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
| | - A Huvet
- University of Brest, Ifremer, CNRS, IRD, LEMAR, F-29280, Plouzané, France
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Bourdon C, Bartels RH, Chimwezi E, Kool J, Chidzalo K, Perot L, Brals D, Bandsma RHJ, Boele van Hensbroek M, Voskuijl WP. The clinical use of longitudinal bio-electrical impedance vector analysis in assessing stabilization of children with severe acute malnutrition. Clin Nutr 2020; 40:2078-2090. [PMID: 33097306 DOI: 10.1016/j.clnu.2020.09.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 08/31/2020] [Accepted: 09/22/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Severe Acute Malnutrition (SAM) in children is determined using anthropometry. However, bio-electrical impedance (BI) analysis could improve the estimation of altered body composition linked to edema and/or loss of lean body mass in children with SAM. We aimed to assess: 1) the changes in BI parameters during clinical stabilization and 2) whether BI parameters add prognostic value for clinical outcome beyond the use of anthropometry. METHODS This prospective observational study enrolled children, aged 6-60 months, that were admitted at Queen Elizabeth Central Hospital in Blantyre, Malawi, for complicated SAM (i.e., having either severe wasting or edematous SAM with a complicating illness). Height, weight, mid-upper arm circumference (MUAC), and BI were measured on admission and after clinical stabilization. BI measures were derived from height-adjusted indices of resistance (R/H), reactance (Xc/H), and phase angle (PA) and considered to reflect body fluids and soft tissue in BI vector analysis (BIVA). RESULTS We studied 183 children with SAM (55% edematous; age 23.0 ± 12.0 months; 54% male) and 42 community participants (age 20.1 ± 12.3 months; male 62%). Compared to community participants, the BIVA of children with edematous SAM were short with low PA and positioned low on the hydration axis which reflects severe fluid retention. In contrast, children with severe wasting had elongated vectors with a PA that was higher than children with edematous SAM but lower than community participants. Their BIVA position fell within the top right quadrant linked to leanness and dehydration. BIVA from severely wasted and edematous SAM patients differed between groups and from community children both at admission and after stabilization (p < 0.001). Vector position shifted during treatment only in children with edematous SAM (p < 0.001) and showed a upward translation suggestive of fluid loss. While PA was lower in children with SAM, PA did not contribute more than anthropometry alone towards explaining mortality, length of stay, or time-to-discharge or time-to-mortality. The variability and heterogeneity in BI measures was high and their overall added predictive value for prognosis of individual children was low. CONCLUSIONS BIVA did not add prognostic value over using anthropometry alone to predict clinical outcome. Several implementation challenges need to be optimized. Thus, in low-resource settings, the routine use of BI in the management of pediatric malnutrition is questionable without improved implementation.
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Affiliation(s)
- Céline Bourdon
- Translational Medicine Program, The Hospital for Sick Children, Toronto, Canada; The Childhood Acute Illness & Nutrition Network, Nairobi, Kenya
| | - Rosalie H Bartels
- Global Child Health Group, Emma Children's Hospital, Amsterdam University Medical Centres, Amsterdam, the Netherlands; Department of Pediatrics and Child Health, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Emmanuel Chimwezi
- The Childhood Acute Illness & Nutrition Network, Nairobi, Kenya; Department of Pediatrics and Child Health, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Jacintha Kool
- Department of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Katherine Chidzalo
- The Childhood Acute Illness & Nutrition Network, Nairobi, Kenya; Department of Pediatrics and Child Health, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Lyric Perot
- Woodrow Wilson School of Public and International Affairs, Princeton University, NJ, USA
| | - Daniella Brals
- Amsterdam Institute for Global Health and Development, Department of Global Health, Amsterdam University Medical Centres, Amsterdam, the Netherlands.
| | - Robert H J Bandsma
- Translational Medicine Program, The Hospital for Sick Children, Toronto, Canada; The Childhood Acute Illness & Nutrition Network, Nairobi, Kenya; Department of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands; Department of Biomedical Sciences, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Michael Boele van Hensbroek
- Global Child Health Group, Emma Children's Hospital, Amsterdam University Medical Centres, Amsterdam, the Netherlands
| | - Wieger P Voskuijl
- The Childhood Acute Illness & Nutrition Network, Nairobi, Kenya; Global Child Health Group, Emma Children's Hospital, Amsterdam University Medical Centres, Amsterdam, the Netherlands; Department of Pediatrics and Child Health, College of Medicine, University of Malawi, Blantyre, Malawi; Amsterdam Institute for Global Health and Development, Department of Global Health, Amsterdam University Medical Centres, Amsterdam, the Netherlands
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Bourdon C, Bardou P, Aujean E, Le Guillou S, Tosser-Klopp G, Le Provost F. RumimiR: a detailed microRNA database focused on ruminant species. Database (Oxford) 2020; 2019:5585578. [PMID: 31608376 PMCID: PMC6790497 DOI: 10.1093/database/baz099] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 05/07/2019] [Accepted: 07/13/2019] [Indexed: 01/03/2023]
Abstract
The ever-increasing use of next-generation sequencing technologies to explore the genome has generated large quantities of data in recent years. Numerous publications have described several thousand sequences of microRNAs, all species included. A new database (RumimiR) has been created from the literature to provide a detailed description of microRNAs for three ruminant species: cattle, goats and sheep. To date, 2887, 2733 and 5095 unique microRNAs from bovine, caprine and ovine species, respectively, are included. In addition to the most recent reference genomic position and sequence of each microRNA, this database contains details about the animals, tissue origins and experimental conditions mentioned in the publications. Identity to human or mouse microRNA is also indicated. The RumimiR database allows data filtering by selecting microRNAs on the basis of defined criteria such as animal status or tissue origin. For ruminant studies, RumimiR supplements the widely used miRBase database, by using complementary criteria to allow browsing and filtering, and integrates all newly described published sequences. The principal goal of this database is to provide easy access to all the ruminant microRNAs described in the literature.
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Affiliation(s)
- Céline Bourdon
- Génétique Animale et Biologie Intégrative (GABI), Institut National de la Recherche Agronomique (INRA), AgroParisTech, Université Paris-Saclay, Allée de Vilvert, 78350 Jouy-en-Josas, France
| | - Philippe Bardou
- GenPhySE, Université de Toulouse, INRA, Ecole Nationale Vétérinaire de Toulouse (ENVT), 24 Chemin de Borde Rouge, 31320 Castanet-Tolosan, France.,Sigenae, INRA, 24 Chemin de Borde Rouge, 31320 Castanet-Tolosan, France
| | - Etienne Aujean
- Génétique Animale et Biologie Intégrative (GABI), Institut National de la Recherche Agronomique (INRA), AgroParisTech, Université Paris-Saclay, Allée de Vilvert, 78350 Jouy-en-Josas, France
| | - Sandrine Le Guillou
- Génétique Animale et Biologie Intégrative (GABI), Institut National de la Recherche Agronomique (INRA), AgroParisTech, Université Paris-Saclay, Allée de Vilvert, 78350 Jouy-en-Josas, France
| | - Gwenola Tosser-Klopp
- GenPhySE, Université de Toulouse, INRA, Ecole Nationale Vétérinaire de Toulouse (ENVT), 24 Chemin de Borde Rouge, 31320 Castanet-Tolosan, France
| | - Fabienne Le Provost
- Génétique Animale et Biologie Intégrative (GABI), Institut National de la Recherche Agronomique (INRA), AgroParisTech, Université Paris-Saclay, Allée de Vilvert, 78350 Jouy-en-Josas, France
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Daniel AI, Kvissberg MEA, Senga E, Versloot CJ, Harawa PP, Voskuijl W, Wishart D, Mandal R, Bandsma R, Bourdon C. Urinary Organic Acids Increase After Clinical Stabilization of Hospitalized Children With Severe Acute Malnutrition. Food Nutr Bull 2019; 40:532-543. [PMID: 31303023 DOI: 10.1177/0379572119853930] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Despite a reduction of child mortality in low-income countries, acutely ill undernourished children still have an elevated risk of death. Those at highest risk are children with severe acute malnutrition (SAM) who often show metabolic dysregulation that remains poorly understood. OBJECTIVE We performed a pilot study to examine changes in urinary organic acids during nutritional rehabilitation of children with SAM, and to identify metabolites associated with the presence of edema or with mortality. METHODS This study included 76 children aged between 6 and 60 months, hospitalized for SAM at the Moyo Nutritional Rehabilitation and Research Unit in Blantyre, Malawi. Urine was collected at admission and 3 days after clinical stabilization and metabolomics were performed using gas chromatography-mass spectrometry. Metabolite concentrations were evaluated with both uni- and multivariate approaches. RESULTS Most metabolites increased 3 days after clinical stabilization, and total urinary concentration changed from 1.2 mM (interquartile range [IQR], 0.78-1.7) at admission to 3.8 mM (IQR, 2.1-6.6) after stabilization (P < .0001). In particular, 6 metabolites showed increases: 3-hydroxybutyric, 4-hydroxyhippuric, p-hydroxyphenylacetic, oxoglutaric, succinic, and lactic acids. Urinary creatinine was low at both time points, but levels did increase from 0.63 mM (IQR, 0.2-1.2) to 2.6 mM (IQR,1.6-4.4; P < .0001). No differences in urinary profiles were found between children who died versus those who survived, nor between children with severe wasting or edematous SAM. CONCLUSIONS Total urinary metabolites and creatinine increase after stabilization and may reflect partial recovery of overall metabolism linked to refeeding. The use of urinary metabolites for risk assessment should be furthered explored. TRIAL REGISTRATION TranSAM study (ISRCTN13916953).
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Affiliation(s)
- Allison I Daniel
- Hospital for Sick Children, Toronto, Canada.,Faculty of Medicine, University of Toronto, Toronto, Canada.,Allison I. Daniel and Matilda E. Arvidsson Kvissberg are co-first authors
| | - Matilda E Arvidsson Kvissberg
- Hospital for Sick Children, Toronto, Canada.,University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.,Allison I. Daniel and Matilda E. Arvidsson Kvissberg are co-first authors
| | - Edward Senga
- College of Medicine, University of Malawi, Blantyre, Malawi
| | - Christian J Versloot
- University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | | | - Wieger Voskuijl
- College of Medicine, University of Malawi, Blantyre, Malawi.,The Childhood Acute Illness and Nutrition Network, Narobi, Kenya.,Academic Medical Centre, University of Amsterdam, The Netherlands
| | | | | | - Robert Bandsma
- Hospital for Sick Children, Toronto, Canada.,Faculty of Medicine, University of Toronto, Toronto, Canada.,University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.,College of Medicine, University of Malawi, Blantyre, Malawi.,The Childhood Acute Illness and Nutrition Network, Narobi, Kenya
| | - Céline Bourdon
- Hospital for Sick Children, Toronto, Canada.,The Childhood Acute Illness and Nutrition Network, Narobi, Kenya
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Bartels RH, Bourdon C, Potani I, Mhango B, van den Brink DA, Mponda JS, Muller Kobold AC, Bandsma RH, Boele van Hensbroek M, Voskuijl WP. Pancreatic Enzyme Replacement Therapy in Children with Severe Acute Malnutrition: A Randomized Controlled Trial. J Pediatr 2017; 190:85-92.e2. [PMID: 28912050 DOI: 10.1016/j.jpeds.2017.07.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 02/06/2017] [Revised: 05/26/2017] [Accepted: 07/07/2017] [Indexed: 10/18/2022]
Abstract
OBJECTIVE To assess the benefits of pancreatic enzyme replacement therapy (PERT) in children with complicated severe acute malnutrition. STUDY DESIGN We conducted a randomized, controlled trial in 90 children aged 6-60 months with complicated severe acute malnutrition at the Queen Elizabeth Central Hospital in Malawi. All children received standard care; the intervention group also received PERT for 28 days. RESULTS Children treated with PERT for 28 days did not gain more weight than controls (13.7 ± 9.0% in controls vs 15.3 ± 11.3% in PERT; P = .56). Exocrine pancreatic insufficiency was present in 83.1% of patients on admission and fecal elastase-1 levels increased during hospitalization mostly seen in children with nonedematous severe acute malnutrition (P <.01). Although the study was not powered to detect differences in mortality, mortality was significantly lower in the intervention group treated with pancreatic enzymes (18.6% vs 37.8%; P < .05). Children who died had low fecal fatty acid split ratios at admission. Exocrine pancreatic insufficiency was not improved by PERT, but children receiving PERT were more likely to be discharged with every passing day (P = .02) compared with controls. CONCLUSIONS PERT does not improve weight gain in severely malnourished children but does increase the rate of hospital discharge. Mortality was lower in patients on PERT, a finding that needs to be investigated in a larger cohort with stratification for edematous and nonedematous malnutrition. Mortality in severe acute malnutrition is associated with markers of poor digestive function. TRIAL REGISTRATION ISRCTN.com: 57423639.
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Affiliation(s)
- Rosalie H Bartels
- Global Child Health Group, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands; Department of Pediatrics and Child Health, College of Medicine, University of Malawi, Blantyre, Malawi.
| | - Céline Bourdon
- Department of Physiology and Experimental Medicine, The Hospital for Sick Children, Toronto, Canada
| | - Isabel Potani
- Department of Pediatrics and Child Health, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Brian Mhango
- Department of Pediatrics and Child Health, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Deborah A van den Brink
- Department of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - John S Mponda
- Department of Pharmacy, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Anneke C Muller Kobold
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Robert H Bandsma
- Department of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands; Department of Biomedical Sciences, College of Medicine, University of Malawi, Blantyre, Malawi
| | | | - Wieger P Voskuijl
- Global Child Health Group, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands; Department of Pediatrics and Child Health, College of Medicine, University of Malawi, Blantyre, Malawi
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Langer M, Väänänen J, Boulestreau M, Miehe U, Bourdon C, Lesjean B. Advanced phosphorus removal via coagulation, flocculation and microsieve filtration in tertiary treatment. Water Sci Technol 2017; 75:2875-2882. [PMID: 28659527 DOI: 10.2166/wst.2017.166] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The applicability of microsieve technology together with coagulation and flocculation for advanced phosphorus removal was investigated. A pilot unit including a microsieve with 10 μm mesh size was operated continuously with secondary effluent from Ruhleben wastewater treatment plant in Berlin. By applying a pretreatment of 0.07-0.09 mmol/L (as metal) coagulant and 1.5-2 mg/L cationic polymer, total phosphorus values below 80 μg/L were achieved. Coagulation with polyaluminum chloride (PACl) produced a better effluent quality compared to FeCl3, as less suspended solids and less residual coagulant were found in the microsieve effluent. In addition, the transmittance of UV radiation through the water was improved by using PACl. The produced amount of backwash water was always below 3% (on average 1.6%). Under optimized mixing conditions, polymer doses of 0.6 mg/L were possible without losses in water quality and filtration performance. Microsieving with chemical pretreatment is a viable option for high quality effluent polishing.
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Affiliation(s)
- M Langer
- Berlin Centre of Competence for Water (KWB), Cicerostr. 24, DE 10709 Berlin, Germany E-mail: ; Institute for Water Resources and Water Supply, Hamburg University of Technology, Am Schwarzenberg-Campus 3, DE 21073 Hamburg, Germany
| | - J Väänänen
- Veolia Water Technologies AB - Hydrotech, Mejselgatan. 6, SE 23532 Vellinge, Sweden
| | - M Boulestreau
- Berlin Centre of Competence for Water (KWB), Cicerostr. 24, DE 10709 Berlin, Germany E-mail:
| | - U Miehe
- Berlin Centre of Competence for Water (KWB), Cicerostr. 24, DE 10709 Berlin, Germany E-mail:
| | - C Bourdon
- Technical Department Veolia Water, 1 rue Giovanni Battista Pirelli, F 94410 Saint Maurice, France
| | - B Lesjean
- Veolia Deutschland, Unter den Linden 21, DE 10117 Berlin, Germany
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11
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Knapp PF, Ball C, Austin K, Hansen SB, Kernaghan MD, Lake PW, Ampleford DJ, McPherson LA, Sandoval D, Gard P, Wu M, Bourdon C, Rochau GA, McBride RD, Sinars DB. A new time and space resolved transmission spectrometer for research in inertial confinement fusion and radiation source development. Rev Sci Instrum 2017; 88:013504. [PMID: 28147637 DOI: 10.1063/1.4973914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We describe the design and function of a new time and space resolved x-ray spectrometer for use in Z-pinch inertial confinement fusion and radiation source development experiments. The spectrometer is designed to measure x-rays in the range of 0.5-1.5 Å (8-25 keV) with a spectral resolution λ/Δλ ∼ 400. The purpose of this spectrometer is to measure the time- and one-dimensional space-dependent electron temperature and density during stagnation. These relatively high photon energies are required to escape the dense plasma created at stagnation and to obtain sensitivity to electron temperatures ≳3 keV. The spectrometer is of the Cauchois type, employing a large 30 × 36 mm2, transmissive quartz optic for which a novel solid beryllium holder was designed. The performance of the crystal was verified using offline tests, and the integrated system was tested using experiments on the Z pulsed power accelerator.
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Affiliation(s)
- P F Knapp
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - C Ball
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - K Austin
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - S B Hansen
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - M D Kernaghan
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - P W Lake
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - D J Ampleford
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - L A McPherson
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - D Sandoval
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - P Gard
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - M Wu
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - C Bourdon
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - G A Rochau
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - R D McBride
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
| | - D B Sinars
- Sandia National Laboratories, Albuquerque, New Mexico 87185, USA
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Attia S, Versloot CJ, Voskuijl W, van Vliet SJ, Di Giovanni V, Zhang L, Richardson S, Bourdon C, Netea MG, Berkley JA, van Rheenen PF, Bandsma RH. Mortality in children with complicated severe acute malnutrition is related to intestinal and systemic inflammation: an observational cohort study. Am J Clin Nutr 2016; 104:1441-1449. [PMID: 27655441 PMCID: PMC5081715 DOI: 10.3945/ajcn.116.130518] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 08/24/2016] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Diarrhea affects a large proportion of children with severe acute malnutrition (SAM). However, its etiology and clinical consequences remain unclear. OBJECTIVE We investigated diarrhea, enteropathogens, and systemic and intestinal inflammation for their interrelation and their associations with mortality in children with SAM. DESIGN Intestinal pathogens (n = 15), cytokines (n = 29), fecal calprotectin, and the short-chain fatty acids (SCFAs) butyrate and propionate were determined in children aged 6-59 mo (n = 79) hospitalized in Malawi for complicated SAM. The relation between variables, diarrhea, and death was assessed with partial least squares (PLS) path modeling. RESULTS Fatal subjects (n = 14; 18%) were younger (mean ± SD age: 17 ± 11 compared with 25 ± 11 mo; P = 0.01) with higher prevalence of diarrhea (46% compared with 18%, P = 0.03). Intestinal pathogens Shigella (36%), Giardia (33%), and Campylobacter (30%) predominated, but their presence was not associated with death or diarrhea. Calprotectin was significantly higher in children who died [median (IQR): 1360 mg/kg feces (2443-535 mg/kg feces) compared with 698 mg/kg feces (1438-244 mg/kg feces), P = 0.03]. Butyrate [median (IQR): 31 ng/mL (112-22 ng/mL) compared with 2036 ng/mL (5800-149 ng/mL), P = 0.02] and propionate [median (IQR): 167 ng/mL (831-131 ng/mL) compared with 3174 ng/mL (5819-357 ng/mL), P = 0.04] were lower in those who died. Mortality was directly related to high systemic inflammation (path coefficient = 0.49), whereas diarrhea, high calprotectin, and low SCFA production related to death indirectly via their more direct association with systemic inflammation. CONCLUSIONS Diarrhea, high intestinal inflammation, low concentrations of fecal SCFAs, and high systemic inflammation are significantly related to mortality in SAM. However, these relations were not mediated by the presence of intestinal pathogens. These findings offer an important understanding of inflammatory changes in SAM, which may lead to improved therapies. This trial was registered at www.controlled-trials.com as ISRCTN13916953.
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Affiliation(s)
- Suzanna Attia
- Division of Gastroenterology, Hepatology, and Nutrition
| | - Christian J Versloot
- Physiology and Experimental Medicine, Peter Gilgan Centre for Research and Learning
| | - Wieger Voskuijl
- Department of Paediatrics and Child Health, College of Medicine, University of Malawi, Blantyre, Malawi.,Global Child Health Group, Emma Children's Hospital, Academic Medical Centre, Amsterdam, Netherlands
| | - Sara J van Vliet
- University of Groningen, University Medical Center Groningen, Department of Pediatric Gastroenterology, Hepatology, and Nutrition, Groningen, Netherlands
| | - Valeria Di Giovanni
- Physiology and Experimental Medicine, Peter Gilgan Centre for Research and Learning
| | - Ling Zhang
- Physiology and Experimental Medicine, Peter Gilgan Centre for Research and Learning
| | | | - Céline Bourdon
- Physiology and Experimental Medicine, Peter Gilgan Centre for Research and Learning
| | - Mihai G Netea
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, Netherlands
| | - James A Berkley
- Kenya Medical Research Institute-Wellcome Trust Research Programme, Kilifi Nuffield Department of Clinical Medicine, Oxford University, Oxford, United Kingdom; and.,Childhood Acute Illness and Nutrition Network (CHAIN)
| | - Patrick F van Rheenen
- University of Groningen, University Medical Center Groningen, Department of Pediatric Gastroenterology, Hepatology, and Nutrition, Groningen, Netherlands
| | - Robert Hj Bandsma
- Division of Gastroenterology, Hepatology, and Nutrition, .,Physiology and Experimental Medicine, Peter Gilgan Centre for Research and Learning.,Centre for Global Child Health, The Hospital for Sick Children, Toronto, Ontario, Canada.,University of Groningen, University Medical Center Groningen, Department of Pediatric Gastroenterology, Hepatology, and Nutrition, Groningen, Netherlands.,Childhood Acute Illness and Nutrition Network (CHAIN)
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13
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Bartels RH, Meyer SL, Stehmann TA, Bourdon C, Bandsma RHJ, Voskuijl WP. Both Exocrine Pancreatic Insufficiency and Signs of Pancreatic Inflammation Are Prevalent in Children with Complicated Severe Acute Malnutrition: An Observational Study. J Pediatr 2016; 174:165-70. [PMID: 27178623 DOI: 10.1016/j.jpeds.2016.04.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [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: 01/23/2016] [Revised: 03/21/2016] [Accepted: 04/06/2016] [Indexed: 02/03/2023]
Abstract
OBJECTIVES To assess whether pancreatic function is impaired in children with severe acute malnutrition, is different between edematous vs nonedematous malnutrition, and improves by nutritional rehabilitation. STUDY DESIGN We followed 89 children with severe acute malnutrition admitted to Queen Elizabeth Central Hospital in Blantyre, Malawi. Stool and blood samples were taken on admission and 3 days after initial stabilization to determine exocrine pancreatic function via fecal elastase-1 (FE-1) and serum trypsinogen and amylase levels. RESULTS A total of 33 children (37.1%) had nonedematous severe acute malnutrition, whereas 56 (62.9%) had edematous severe acute malnutrition. On admission, 92% of patients showed evidence of pancreatic insufficiency as measured by FE-1 <200 μg/g of stool. Patients with edematous severe acute malnutrition were more likely to have low FE-1 (98% vs 82.8%, P = .026). FE-1 levels remained low in these individuals throughout the assessment period. Serum trypsinogen was elevated (>57 ng/mL) in 28% and amylase in 21% (>110 U/L) of children, suggesting pancreatic inflammation. CONCLUSION Exocrine pancreatic insufficiency is prevalent in children with severe acute malnutrition and especially in children with edematous severe acute malnutrition. In addition, biochemical signs suggestive of pancreatitis are common in children with severe acute malnutrition. These results have implications for standard rehabilitation treatment of children with severe acute malnutrition who may benefit from pancreatic enzyme replacement therapy. TRIAL REGISTRATION ISRCTN.com: 13916953.
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Affiliation(s)
- Rosalie H Bartels
- Global Child Health Group, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands; Department of Pediatrics and Child Health, College of Medicine, University of Malawi, Blantyre, Malawi.
| | - Sophie L Meyer
- University Medical Center Groningen, University of Groningen, The Netherlands
| | - Tijs A Stehmann
- University Medical Center Groningen, University of Groningen, The Netherlands
| | - Céline Bourdon
- Division of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, Toronto, University of Toronto, Toronto, Canada
| | - Robert H J Bandsma
- Division of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, Toronto, University of Toronto, Toronto, Canada; Department of Pediatrics, Center for Liver, Digestive and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Centre for Global Child Health, The Hospital for Sick Children, Toronto, Canada
| | - Wieger P Voskuijl
- Global Child Health Group, Emma Children's Hospital, Academic Medical Center, Amsterdam, The Netherlands; Department of Pediatrics and Child Health, College of Medicine, University of Malawi, Blantyre, Malawi
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Valayannopoulos V, Malinová V, Sharma R, Bourdon C, Boyadjiev S, Kessler B, Whitley C, Twelves C, Tripuraneni R, Eckert S, Quinn A. Effect of sebelipase alfa after 90 weeks in adults with lysosomal acid lipase deficiency. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2014.05.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Schaff M, Receveur N, Bourdon C, Ohlmann P, Lanza F, Gachet C, Mangin PH. β-arrestin-1 participates in thrombosis and regulates integrin aIIbβ3 signalling without affecting P2Y receptors desensitisation and function. Thromb Haemost 2012; 107:735-48. [PMID: 22318609 DOI: 10.1160/th11-06-0430] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Accepted: 01/05/2012] [Indexed: 01/21/2023]
Abstract
β-arrestin-1 (β-arr1) and β-arrestin-2 (β-arr2) are cytosolic proteins well-known to participate in G protein-coupled receptor desensitisation and signalling. We used genetically-inactivated mice to evaluate the role of β-arr1 or β-arr2 in platelet function, P2Y receptor desensitisation, haemostasis and thrombosis. Platelet aggregation, soluble fibrinogen binding and P-selectin exposure induced by various agonists were near normal in β-arr1-/- and β-arr2-/- platelets. In addition, deficiency in β-arr1 or β-arr2 was not critical for P2Y receptors desensitisation. A functional redundancy between β-arr1 and β-arr2 may explain these unchanged platelet responses. Interestingly, β-arr1-/- but not β-arr2-/- mice were protected against laser- and FeCl3-induced thrombosis. The tail bleeding times, number of rebleeds and volume of blood loss were unchanged in β-arr1-/- and β-arr2-/- mice, suggesting no defect in haemostasis. β-arr1-/- platelet activation upon adhesion to immobilised fibrinogen was inhibited, as attested by a 37 ± 5% (n = 3, p<0.0001) decrease in filopodia extension, suggesting defective signalling through integrin αIIbβ3. β-arr1 appeared to be located downstream of Src family kinases and to regulate αIIbβ3 signalling by increasing Akt phosphorylation. Overall, this study supports a role for β-arr1 in promoting thrombus formation, in part through its participation in αIIbβ3 signalling, and no role of β-arr1 and β-arr2 in agonist-induced platelet activation and P2Y receptors desensitisation.
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Affiliation(s)
- M Schaff
- INSERM UMR-S949, Etablissement Français du Sang-Alsace (EFS-Alsace), 10, rue Spielmann, BP 36, F-67065 Strasbourg Cedex, France
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Choubert JM, Granger D, Bourdon C, Héduit A. Biochemical acidogenic potential in domestic wastewaters: effect of sampling and storage to characterize daily average composite samples. Water Sci Technol 2011; 63:1396-1404. [PMID: 21508542 DOI: 10.2166/wst.2011.314] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
To estimate the expectable enhanced biological phosphorus removal value of a wastewater, the concentration of volatile fatty acids (VFAs) and the biochemical acidogenic potential (BAP) are generally determined on grab samples of wastewater, as these variables are prone to rapid change after sampling. However, such sampling technique do not take into account the variations of these parameters during the day. This work has evaluated the changes of VFAs and BAP occurring during sampling and storage in an automatic sampler over 24 h. The consequences of waterfall oxygen input during sampling, and changes during storage (fermentation and sulfatereducing process) were studied. The results for two wastewaters showed that the sampling technique used for daily flow proportional composite samples provided a correct estimation of VFAs, and underestimated BAP by up to 25%. For hourly-average composite samples of wastewaters, significant modifications of the concentrations of these two parameters were recorded around the daily average values.
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Affiliation(s)
- J-M Choubert
- Cemagref, UR HBAN, Parc de Tourvoie, F-92163 ANTONY Cedex, France.
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Rowe B, Bretzlaff J, Bourdon C, Bota G, Camargo C. Magnesium sulfate is effective for severe acute asthma treated in the emergency department. West J Med 2010; 172:96. [PMID: 18751237 DOI: 10.1136/ewjm.172.2.96] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Nowlan NC, Bourdon C, Dumas G, Tajbakhsh S, Prendergast PJ, Murphy P. Developing bones are differentially affected by compromised skeletal muscle formation. Bone 2010; 46:1275-85. [PMID: 19948261 PMCID: PMC2860222 DOI: 10.1016/j.bone.2009.11.026] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2009] [Revised: 10/19/2009] [Accepted: 11/20/2009] [Indexed: 12/03/2022]
Abstract
Mechanical forces are essential for normal adult bone function and repair, but the impact of prenatal muscle contractions on bone development remains to be explored in depth in mammalian model systems. In this study, we analyze skeletogenesis in two 'muscleless' mouse mutant models in which the formation of skeletal muscle development is disrupted; Myf5(nlacZ/nlacZ):MyoD(-/-) and Pax3(Sp/Sp) (Splotch). Ossification centers were found to be differentially affected in the muscleless limbs, with significant decreases in bone formation in the scapula, humerus, ulna and femur, but not in the tibia. In the scapula and humerus, the morphologies of ossification centers were abnormal in muscleless limbs. Histology of the humerus revealed a decreased extent of the hypertrophic zone in mutant limbs but no change in the shape of this region. The elbow joint was also found to be clearly affected with a dramatic reduction in the joint line, while no abnormalities were evident in the knee. The humeral deltoid tuberosity was significantly reduced in size in the Myf5(nlacZ/nlacZ):MyoD(-/-) mutants while a change in shape but not in size was found in the humeral tuberosities of the Pax3(Sp/Sp) mutants. We also examined skeletal development in a 'reduced muscle' model, the Myf5(nlacZ/+):MyoD(-/-) mutant, in which skeletal muscle forms but with reduced muscle mass. The reduced muscle phenotype appeared to have an intermediate effect on skeletal development, with reduced bone formation in the scapula and humerus compared to controls, but not in other rudiments. In summary, we have demonstrated that skeletal development is differentially affected by the lack of skeletal muscle, with certain rudiments and joints being more severely affected than others. These findings indicate that the response of skeletal progenitor cells to biophysical stimuli may depend upon their location in the embryonic limb, implying a complex interaction between mechanical forces and location-specific regulatory factors affecting bone and joint development.
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Affiliation(s)
- Niamh C. Nowlan
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, Ireland
- Trinity Centre for Bioengineering, School of Engineering, Trinity College Dublin, Ireland
| | - Céline Bourdon
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, Ireland
- Trinity Centre for Bioengineering, School of Engineering, Trinity College Dublin, Ireland
| | - Gérard Dumas
- Stem Cells & Development, Department of Developmental Biology, Institut Pasteur, Paris, France
| | - Shahragim Tajbakhsh
- Stem Cells & Development, Department of Developmental Biology, Institut Pasteur, Paris, France
| | - Patrick J. Prendergast
- Trinity Centre for Bioengineering, School of Engineering, Trinity College Dublin, Ireland
| | - Paula Murphy
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, Ireland
- Trinity Centre for Bioengineering, School of Engineering, Trinity College Dublin, Ireland
- Corresponding author. Fax: +353 677 8094.
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Bourdon C, Hojna S, Jordan M, Bérubé J, Kren V, Pravenec M, Liu P, Arab S, Pausová Z. Genetic locus on rat chromosome 20 regulates diet-induced adipocyte hypertrophy: a microarray gene expression study. Physiol Genomics 2009; 38:63-72. [PMID: 19383622 DOI: 10.1152/physiolgenomics.90209.2008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Obesity is a leading cause of diabetes mellitus and hypertension. Molecular signals produced by adipose tissue may contribute to the pathogenesis of these two disorders. We showed previously that a specific segment of rat chromosome 20 (RNO20) contains a gene(s) regulating the degree of obesity, glucose intolerance, and hypertension in response to a chronic high-fat diet (HFD). Here we examined microarray gene expression profiles and cellular morphology of adipose tissues and whole body energy expenditure in this model. Adult male spontaneously hypertensive rats (SHR) and a congenic strain (SHR.1N) that differs from SHR by the above-mentioned segment of RNO20 were fed for 12 wk with HFD or a normal diet. At the end of this period, whole body energy expenditure was measured with indirect calorimetry. In response to HFD, body weight, fat pad weights, adipocyte size, and serum leptin levels increased significantly more in SHR.1N than SHR. Microarray gene expression profiles [Affymetrix, 15,923 genes and expressed sequence tags (ESTs)] showed that multiple genes of molecular pathways involved in lipogenesis were downregulated to a similar level in both strains, whereas genes involved in fatty acid oxidation and energy dissipation were upregulated less in SHR.1N than SHR. This was associated with lower whole body energy expenditure in SHR.1N than SHR at the end of the 12-wk HFD. Our results suggest that a gene(s) within the RNO20 segment regulate(s) HFD-induced increases in adiposity, and that this effect may be mediated, at least in part, by the impact of that gene(s) on fat burning and energy expenditure.
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Affiliation(s)
- Céline Bourdon
- Brain and Body Centre, University of Nottingham, Nottingham, United Kingdom
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20
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Bérubé J, Bourdon C, Yao Y, Rousseau S. Distinct intracellular signaling pathways control the synthesis of IL-8 and RANTES in TLR1/TLR2, TLR3 or NOD1 activated human airway epithelial cells. Cell Signal 2008; 21:448-56. [PMID: 19121387 DOI: 10.1016/j.cellsig.2008.12.001] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2008] [Revised: 11/24/2008] [Accepted: 12/02/2008] [Indexed: 01/21/2023]
Abstract
Inflammation is a central feature of many respiratory diseases. Airway epithelial cells are exposed to many agents present in the air that can alter their function and have important structural consequences for the airways. In this study, 19 Toll-Like Receptors (TLRs) and Nucleotide-binding Oligomerization Domain (NOD)1/NOD2 ligands were screened for their capacity to up-regulate Interleukin-8 (IL-8) and Regulated upon Activation Normal T cell Expressed and Secreted (RANTES) in airway epithelial cells. Three ligands (Pam3CSK4, Poly I:C and C12-ie-DAP) were selected for their capacity to activate different receptor complexes (TLR1/TLR2, TLR3 and NOD1 respectively) while leading to the increase of both IL-8 and RANTES albeit with distinct kinetics. Using protein kinase inhibitors we found that the Nuclear Factor kappaB (NFkappaB) pathway is essential for the transcriptional regulation of both IL-8 and RANTES following the activation of TLR1/TLR2, TLR3 and NOD1. In contrast, the Mitogen-Activated Protein Kinases (MAPKs) Extracellular signal-Regulated Kinase (ERK)1/ERK2 and p38 MAPK were necessary for the transcription of IL-8 but not RANTES. Moreover, we found that the p38 MAPK was implicated in the post-transcriptional regulation of IL-8 following TLR3 activation. The distinction made between pathways involved in the regulation of IL-8 and RANTES gives rise to the possibility of designing more targeted clinical approaches based on the biological functions to be ablated.
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Affiliation(s)
- Julie Bérubé
- Meakins-Christie Laboratories, McGill University Heath Centre Research Institute, 3626 St-Urbain, Montréal, Canada H2X 2P2
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21
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Vallat A, Roullier L, Bourdon C. Thermodynamic and kinetic control over the electrochemical reduction of di(propylthiotetramethylcyclopentadienyl) titanium dichloride in tetrahydrofuran. J Electroanal Chem (Lausanne) 2003. [DOI: 10.1016/s0022-0728(02)01454-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Rowe BH, Bretzlaff JA, Bourdon C, Bota GW, Camargo CA. Intravenous magnesium sulfate treatment for acute asthma in the emergency department: a systematic review of the literature. Ann Emerg Med 2000; 36:181-90. [PMID: 10969218 DOI: 10.1067/mem.2000.105659] [Citation(s) in RCA: 113] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
STUDY OBJECTIVES There is some evidence that magnesium, when infused into asthmatic patients, can produce bronchodilation in addition to that obtained from standard treatments. This systematic review examined the effect of intravenous magnesium sulfate used for patients with acute asthma managed in the emergency department. METHODS Only randomized controlled trials were eligible for inclusion. Studies were included if patients presented with acute asthma and were treated with intravenous magnesium sulfate versus placebo. Trials were identified from the Cochrane Airways Review Group register, which consists of a combined search of EMBASE, MEDLINE, and CINAHL databases and hand-searching of 20 key respiratory journals. Bibliographies from included studies and known reviews were searched. Primary authors and content experts were contacted. Data were extracted and methodologic quality was assessed independently by 2 reviewers. Missing data were obtained from authors. RESULTS Seven trials (5 adult, 2 pediatric) involving a total of 668 patients were included. Overall, admission to hospital was not statistically reduced using magnesium sulfate (odds ratio [OR] 0.31, 95% confidence interval [CI] 0.09 to 1.02). In the severe subgroup, admissions were reduced in those receiving magnesium sulfate (OR 0.10, 95% CI 0.04 to 0.27). Overall, patients receiving magnesium sulfate demonstrated nonsignificant improvements in peak expiratory flow rates (PEFR) when all studies were pooled (weighted mean difference [WMD] 29 L/min, 95% CI -3 to 62). In studies of patients with severe acute asthma, PEFR WMD improved by 52 L/min (95% CI 27 to 78) favoring magnesium sulfate treatment. The absolute FEV(1) also improved by 10% predicted (95% CI 4 to 16) in patients with severe acute asthma. No clinically important changes in vital signs or side effects were reported. CONCLUSION Current evidence does not clearly support routine use of intravenous magnesium sulfate in all patients with acute asthma presenting to the ED. However, magnesium sulfate appears to be safe and beneficial for patients who present with severe acute asthma. Practice guidelines need to be changed to reflect these results.
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Affiliation(s)
- B H Rowe
- Division of Emergency Medicine and Department of Public Health Sciences, University of Alberta, Edmonton, Alberta, Canada.
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23
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Dubuquoy L, Bourdon C, Peuchmaur M, Leibowitz MD, Nutten S, Colombel JF, Auwerx J, Desreumaux P. [Peroxisome proliferator-activated receptor (PPAR) gamma: a new target for the treatment of inflammatory bowel disease]. Gastroenterol Clin Biol 2000; 24:719-24. [PMID: 11011247] [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: 02/17/2023]
Abstract
UNLABELLED The peroxisome proliferator-activated receptor (PPAR) gamma is highly expressed in the colon mucosa. In vitro, it regulates inflammation. AIM To evaluate the anti-inflammatory functions of PPARgamma agonist during a trinitrobenzene sulfonic acid (TNBS)-induced colitis in mice. METHODS Colitis was induced in Balb/c mice after intra-rectal administration of TNBS. The intensity of inflammation was assessed 2 and 5 days after colitis induction by macroscopic and histologic scores and by the quantification of colon myeloperoxidase (MPO), IL-1B and TNFalpha mRNA concentrations. The therapeutic role of PPARgamma agonist given by oral gavage was assessed in preventive and treatment modes. RESULTS TNBS induced severe macroscopic and histologic lesions, with high mucosal MPO, IL-1B and TNFalpha mRNA concentrations. PPARgamma agonist given preventively or in treatment mode allowed a significant decrease of macroscopic and histologic scores through a normalization of MPO, IL-1B and TNFalpha mRNA concentrations. CONCLUSION PPARgamma agonist decreases the intensity of TNBS induced colitis through normalization of IL-1B and TNFalpha expression. PPARgamma agonists may be proposed as new therapeutic agents in inflammatory bowel diseases.
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Affiliation(s)
- L Dubuquoy
- Laboratoire de Recherche sur les Maladies Inflammatoires Intestinales (CRI4U0048), CHU Lille
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Abstract
BACKGROUND Treatment of acute asthma is based on rapid reversal of bronchospasm and arresting airway inflammation. There is some evidence that intravenous magnesium can provide additional bronchodilation when given in conjunction with standard bronchodilating agents and corticosteroids. No systematic review of this literature has been completed on this topic. OBJECTIVES To examine the effect of additional intravenous magnesium sulfate in patients with acute asthma managed in the emergency department. SEARCH STRATEGY Randomised controlled trials were identified from the Cochrane Airways Review Group register. Bibliographies from included studies, known reviews and texts were searched. Primary authors and content experts were contacted. SELECTION CRITERIA Randomised controlled trials or quasi-randomised trials were eligible for inclusion. Studies were included if patients presented with acute asthma and were treated with IV magnesium sulfate vs placebo. DATA COLLECTION AND ANALYSIS Data were extracted and methodological quality was assessed independently by two reviewers. Missing data were obtained from authors. MAIN RESULTS Seven trials were included (5 adult, 2 pediatric). A total of 665 patients were involved. Patients receiving magnesium sulfate demonstrated non-significant improvements in peak expiratory flow rates when all studies were pooled (weighted mean difference: 29.4 L/min; 95% confidence interval: -3.4 to 62). In studies of people with severe acute asthma, peak expiratory flow rate improved by 52.3 L/min (95% confidence interval: 27 to 77.5). The forced expiratory volume in one second also improved by 9.8 % predicted (95% confidence interval: 3.8 to 15.8). Overall, admission to hospital was not reduced, odds ratio: 0.31 (95% confidence interval: 0.09 to 1.02). In the severe subgroup, admissions were reduced in those receiving magnesium sulfate (odds ratio: 0.10, 95% confidence interval: 0.04 to 0.27). No clinically important changes in vital signs or adverse side effects were reported. REVIEWER'S CONCLUSIONS Current evidence does not support routine use of intravenous magnesium sulfate in all patients with acute asthma presenting to the emergency department. Magnesium sulfate appears to be safe and beneficial in patients who present with severe acute asthma.
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Affiliation(s)
- B H Rowe
- Division of Emergency Medicine, University of Alberta, 1G1 Walter Mackenzie Centre, 8440-112 Street, Edmonton, Alberta, Canada, T6G 2B7.
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De Sutter PH, Coibion M, Vosse M, Hertens D, Huet F, Wesling F, Wayembergh M, Bourdon C, Autier PH. A multicentre study comparing cervicography and cytology in the detection of cervical intraepithelial neoplasia. Br J Obstet Gynaecol 1998; 105:613-20. [PMID: 9647151] [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: 02/08/2023]
Abstract
OBJECTIVE To evaluate in a multicentre setting the performance of cervicography compared with cytology for the detection of cervical intraepithelial neoplasia. DESIGN Prospective comparative multicentre study. SETTING Three hospitals with outpatient gynaecology clinics and three cancer screening clinics. PARTICIPANTS AND METHODS Cervical cytology and cervicography were performed on 5724 women. If one or both tests showed an abnormality suggestive of at least a low grade squamous intraepithelial lesion, a colposcopy with directed biopsy was carried out. Cervicograms were evaluated by four experienced 'senior' assessors and by ten new 'junior' assessors. RESULTS Results were fully analysed for 5192 women (91%). A cervical biopsy was carried out on 228 women and this confirmed a true positive lesion in 116 cases (incidence rate: 2.2%). Of these, 72 cases (62.1%) were detected by cervicography and 64 (55.2%) by cytology. This difference was not statistically significant (McNemar: P=0.475). Only 20 cases of CIN (17%) were concordantly detected by both tests. Senior assessors performed significantly better with a detection capacity of 80.6% compared to a detection capacity of 56.6% for the junior assessors (chi2 test: P=0.034). CONCLUSIONS Cervicography must be considered as a complementary test to cytology. Overall detection of CIN is improved, but this is mainly due to the detection of more low grade lesions. The lower sensitivity and specificity in high grade lesions compared with cervical cytology is the main limitation of cervicography in screening for CIN. An important finding was that the performance of cervicography was highly dependent on the assessors' experience.
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Affiliation(s)
- P h De Sutter
- Department of Gynaecology and Obstetrics, Colposcopy Clinic, Akademisch Ziekenhuis Vrije Universiteit Brussel, Belgium
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Grivegnee A, Bourdon C, Renard F. Quality assurance in screening mammograms: first results of the Brussels project for breast cancer screening. Breast 1997. [DOI: 10.1016/s0960-9776(97)90065-5] [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] Open
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Bourdon C, Fontugne MJ. [Exercise therapy]. Soins Chir 1994:27-32. [PMID: 8009121] [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: 01/28/2023]
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Vandenbroucke A, Bourdon C. Epidemiological survey of preinvasive breast cancer. Eur J Cancer Prev 1993; 2 Suppl 3:3-10. [PMID: 8298449] [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] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
DCIS and LCIS are different breast diseases at various points of view. DCIS has in most cases a clinical or mammographical pattern, whereas LCIS represents an incidental finding in breast tissue removed for another reason. However, DCIS found incidental to benign disease may be a more innocuous form of tumour. Multifocal foci are more frequent in LCIS than in DCIS, but microinvasion and coexisting unsuspected infiltration carcinoma are more often found in DCIS. Contralateral in situ breast carcinoma is a rare event in DCIS. It is seldom found in LCIS. The risk of development of an infiltrating ipsilateral carcinoma after biopsy or excision showing in situ carcinoma is higher for DCIS than for LCIS. However, in most cases the invasive tumour occurs at or near the site of the original biopsy. Among LCIS patients, invasive carcinoma occurs anywhere in the breast parenchyma. The risk of development of contralateral invasive cancer is very low in DCIS patients, but it is high in LCIS patients. It may be lobular, ductal or a mixture of different types. DCIS has to be considered as a truly preinvasive lesion although LCIS is rather a marker of increased risk.
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Affiliation(s)
- A Vandenbroucke
- Unité de Prévention et Dépistage du Cancer ESP Bte 3051, Bruxelles, Belgium
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Abstract
Results of randomized trials and case-control studies on breast cancer screening are reviewed. A combined analysis of data from the randomized studies indicates that a mortality reduction (29%) can be achieved by mammographic screening in women. Regular breast cancer screening by mammography for women aged 50-69 years reduces breast cancer mortality by 40% (confidence interval [CI] 95% about 27-55) in women who are screened at least once. In younger women, the results are inconclusive. The programme Europe against Cancer has recommended the setting-up of a network of pilot studies on breast cancer screening by mammography in the European Community in order to obtain the necessary experience, with a view to implementation of a national screening programme before the year 2000. In the Brussels project, the main objective is to develop a programme of quality assurance. In Belgium, there are other projects with different designs, for which the results are not yet available.
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Affiliation(s)
- A Vandenbroucke
- Centre des Tumeurs et de Radiothérapie-UCL, Unite de Depistage et de Prevention, Brussels, Belgium
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Bourdon C. Nursing facilities' evolution needs decisive regulatory, financial, management acts. Mod Healthc 1992; 22:38. [PMID: 10116355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Affiliation(s)
- C Bourdon
- Berkshire Health Systems, Pittsfield, MA
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Bourdon C, Mazy G, Vandenbroucke A. [Systematic mammographic screening for breast cancer in asymptomatic women]. J Belge Radiol 1992; 75:17-23. [PMID: 1568999] [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: 12/27/2022]
Abstract
It appears that the mortality rate from breast cancer decreases in 50-year-old (and over) women submitted to mammographic screening. Since 1980, the Unit of Cancer Prevention of the UCL is proposing mammographic screening to women with normal clinical examination but belonging to a "high-risk" group. Among the 5651 mammographies which were performed on 2924 women, 24 biopsies have been proposed and 16 cases of cancer have been diagnosed. 5.5% breast cancers have been detected. This result is consistent with the average figures reported in the screening programmes abroad. Questions about the age at which cancer screening should start and about the number of views that should be taken are also discussed.
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Affiliation(s)
- C Bourdon
- Unité de Dépistage et Prévention du Cancer, Centre des Tumeurs (UCL), Bruxelles, Belgique
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Bourdon C, Lemaitre A, Linker M. [Review of the functional surgical pathology of the temporomandibular joint]. Acta Stomatol Belg 1988; 85:173-7. [PMID: 3189105] [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: 01/04/2023]
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Lemaitre A, Linker M, Bourdon C, Wilmont A, Pieret R. [Conservative attitude in surgery of the temporomandibular joint. Indications and technics]. Acta Stomatol Belg 1988; 85:165-71. [PMID: 3189104] [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: 01/04/2023]
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Vandenbroucke A, Bourdon C, Ilunga J. [[Evaluation of various methods of studying fecal occult blood]. Acta Gastroenterol Belg 1988; 51:383-90. [PMID: 2979053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Occult blood testing for detection of asymptomatic colorectal cancer is an old concept. The authors review the literature about the screening value of current tests. Among the chemical tests, Hemoccult is the most popular and the best studied. Sensitivity and specificity are moderate. False negative reactions are due either to the test itself (high level of sensitivity, loss of reactivity) or to the tumour (intermittent or insufficient bleeding, localization etc...). False positive reactions are due to the interference of a high peroxidase diet. The Hemoccult test is nevertheless interesting because it is simple, cheap and well accepted. Detected cancers tend to be at a relatively early stage: 60 to 80% of Dukes A or B. New methods--Hemoquant and immunochemical methods--are being developed. Their high degree of sensitivity and specificity for human hemoglobin makes them too complex and too costly. Whatever the efficacity of a test to detect occult blood may be, we must know whether the screening of an asymptomatic population could decrease the mortality rate of colorectal cancer, before using it on a large scale. Only long-term controlled trials can give us an answer in the future.
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Wilmont A, Lemaitre A, Bourdon C, Linker M. [Cervicofacial tumors: apropos 6 cases]. Acta Stomatol Belg 1986; 83:57-62. [PMID: 3461699] [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: 01/05/2023]
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Furioli J, Bourdon C, Le Loc'h H. [Mycoplasma pneumoniae infection. Manifestation in a 3-year-old child by Raynaud's phenomenon]. Arch Fr Pediatr 1985; 42:313-4. [PMID: 4004494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The authors report the case of a 3 year-old boy with mycoplasma pneumoniae infection. The presenting sign was Raynaud's phenomenon with cryoglobulinemia and cryofibrinogenemia. To their knowledge this is the first reported case presenting with such an association.
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Bourdon C, Linker M, Lemaitre A, Romagnolo J, Pieret R. [Tumors of the accessory salivary glands]. Acta Stomatol Belg 1984; 81:257-71. [PMID: 6098177] [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: 01/18/2023]
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38
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Linker M, Lemaitre A, Pieret R, Romagnolo J, Bourdon C. [Early treatment of the nasal component in labiomaxillopalatine clefts]. Acta Stomatol Belg 1984; 81:173-80. [PMID: 6595940] [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: 01/20/2023]
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Lemaitre A, Linker M, Romagnolo J, Bourdon C. [Use of latissimus dorsi myocutaneous flaps in head and neck surgery]. Acta Stomatol Belg 1984; 81:119-31. [PMID: 6594035] [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: 01/20/2023]
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Lemaitre A, Linker M, Romagnolo J, Bourdon C. [Sub-mucous velar clefts]. Acta Stomatol Belg 1984; 81:55-62. [PMID: 6591779] [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: 01/20/2023]
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