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Kesse-Guyot E, Lairon D, Allès B, Seconda L, Rebouillat P, Brunin J, Vidal R, Taupier-Letage B, Galan P, Amiot MJ, Péneau S, Touvier M, Boizot-Santai C, Ducros V, Soler LG, Cravedi JP, Debrauwer L, Hercberg S, Langevin B, Pointereau P, Baudry J. Key Findings of the French BioNutriNet Project on Organic Food-Based Diets: Description, Determinants, and Relationships to Health and the Environment. Adv Nutr 2021; 13:208-224. [PMID: 34661620 PMCID: PMC8803492 DOI: 10.1093/advances/nmab105] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/26/2021] [Accepted: 08/30/2021] [Indexed: 11/13/2022] Open
Abstract
Few studies have investigated the relationships between organic food consumption, dietary patterns, monetary diet cost, health, and the environment. To address these issues, a consortium of French epidemiologists, nutritionists, economists, and toxicologists launched the BioNutriNet project in 2013. In 2014, an FFQ documented the usual organic and nonorganic (conventional) food consumption of approximately 35,000 NutriNet-Santé participants. Then, individual organic and conventional food intakes were merged with price, environmental, and pesticide residue data sets, which distinguished between conventional and organic farming methods. Many studies were conducted to characterize organic consumers and their environmental impacts (i.e., greenhouse gas emissions, energy demand, and land use) and organic food consumption impacts on health. We observed that organic consumers had diets that were healthier and richer in plant-based food than nonorganic consumers. Their diets were associated with higher monetary costs, lower environmental impacts, and reduced exposure to certain pesticide residues. Regular consumption of organic food was associated with reduced risks of obesity, type 2 diabetes, postmenopausal breast cancer, and lymphoma. Although several observations have been confirmed by several studies conducted in other countries, our results should be replicated in other cultural settings and coupled with experimental studies to be able to draw causal conclusions. Finally, the main finding of the BioNutriNet project is that while organic food consumption could be associated with positive externalities on human health and the environment, organic-based diets should be accompanied by dietary shifts toward plant-based diets to allow for better planetary and human health.
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Affiliation(s)
| | - Denis Lairon
- Aix Marseille University, INSERM, INRAE, Centre for Cardiovascular Research and Nutrition (C2VN), Marseille, France
| | - Benjamin Allès
- Sorbonne Paris Nord University, National Institute of Health and Medical Research (INSERM), National Research Institute for Agriculture, Food, and the Environment (INRAE), National Conservatory of Arts and Crafts (CNAM), Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris (CRESS), Bobigny, France
| | - Louise Seconda
- Sorbonne Paris Nord University, National Institute of Health and Medical Research (INSERM), National Research Institute for Agriculture, Food, and the Environment (INRAE), National Conservatory of Arts and Crafts (CNAM), Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris (CRESS), Bobigny, France,Agency for the Environment and Energy Management (ADEME), Angers, France
| | - Pauline Rebouillat
- Sorbonne Paris Nord University, National Institute of Health and Medical Research (INSERM), National Research Institute for Agriculture, Food, and the Environment (INRAE), National Conservatory of Arts and Crafts (CNAM), Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris (CRESS), Bobigny, France
| | - Joséphine Brunin
- Sorbonne Paris Nord University, National Institute of Health and Medical Research (INSERM), National Research Institute for Agriculture, Food, and the Environment (INRAE), National Conservatory of Arts and Crafts (CNAM), Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris (CRESS), Bobigny, France,Agency for the Environment and Energy Management (ADEME), Angers, France
| | | | | | - Pilar Galan
- Sorbonne Paris Nord University, National Institute of Health and Medical Research (INSERM), National Research Institute for Agriculture, Food, and the Environment (INRAE), National Conservatory of Arts and Crafts (CNAM), Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris (CRESS), Bobigny, France
| | - Marie-Josèphe Amiot
- MOISA, INRAE, International Cooperation in Agricultural Research for Development (CIRAD), International Centre for Advanced Mediterranean Agronomic Studies (CIHEAM), Institut Agro-SupAgro (SUPAGRO), Montpellier University, Montpellier, France
| | - Sandrine Péneau
- Sorbonne Paris Nord University, National Institute of Health and Medical Research (INSERM), National Research Institute for Agriculture, Food, and the Environment (INRAE), National Conservatory of Arts and Crafts (CNAM), Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris (CRESS), Bobigny, France
| | - Mathilde Touvier
- Sorbonne Paris Nord University, National Institute of Health and Medical Research (INSERM), National Research Institute for Agriculture, Food, and the Environment (INRAE), National Conservatory of Arts and Crafts (CNAM), Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris (CRESS), Bobigny, France
| | | | - Véronique Ducros
- Biochemistry Department, Grenoble-Alpes Hospital, Grenoble, France
| | | | - Jean-Pierre Cravedi
- Toxalim, Toulouse University, INRAE, National Veterinary School (ENVT), National Polytechnic Institute of Toulouse-Purpan, Paul Sabatier University, Toulouse, France
| | - Laurent Debrauwer
- Toxalim, Toulouse University, INRAE, National Veterinary School (ENVT), National Polytechnic Institute of Toulouse-Purpan, Paul Sabatier University, Toulouse, France
| | - Serge Hercberg
- Sorbonne Paris Nord University, National Institute of Health and Medical Research (INSERM), National Research Institute for Agriculture, Food, and the Environment (INRAE), National Conservatory of Arts and Crafts (CNAM), Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris (CRESS), Bobigny, France
| | | | | | - Julia Baudry
- Sorbonne Paris Nord University, National Institute of Health and Medical Research (INSERM), National Research Institute for Agriculture, Food, and the Environment (INRAE), National Conservatory of Arts and Crafts (CNAM), Nutritional Epidemiology Research Team (EREN), Epidemiology and Statistics Research Center–University of Paris (CRESS), Bobigny, France
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Boulet L, Alex B, Clavey N, Martinez J, Ducros V. Simultaneous analysis of retinol, six carotenoids, two tocopherols, and coenzyme Q10 from human plasma by HPLC. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1151:122158. [PMID: 32531701 DOI: 10.1016/j.jchromb.2020.122158] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 03/25/2020] [Accepted: 05/11/2020] [Indexed: 12/11/2022]
Abstract
Lipophilic antioxidant determination is of relevance in health and diseases. Several HPLC methods exists but rare are those including coenzyme Q10 with carotenoids, retinol and tocopherols. Here a single-step extraction was proposed for the detection of retinol, α and γ-tocopherols, lutein, zeaxanthin, trans-ß-carotene, α-carotene, ß-cryptoxanthin and lycopene as well as coenzyme Q10. A single HPLC column was used and UV-vis diode array detection was performed. Echinenone, alpha-tocopherol nicotinate and coenzyme Q4 were employed as internal standards. Intra-assay and inter-assay precision were respectively 1.4-7.9% and 2.2-15.8%. Accuracy was validated using SRM 968e. LOD (limit of detection) and LOQ (limit of quantification) obtained were sufficient for nutritional epidemiological study and routine clinical application.
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Affiliation(s)
- Lysiane Boulet
- Nutrition Unit, Biochemistry Laboratory, University Hospital Grenoble-Alpes, 38043 Grenoble cedex 9, France
| | - Brigitte Alex
- Nutrition Unit, Biochemistry Laboratory, University Hospital Grenoble-Alpes, 38043 Grenoble cedex 9, France
| | - Nadège Clavey
- Nutrition Unit, Biochemistry Laboratory, University Hospital Grenoble-Alpes, 38043 Grenoble cedex 9, France
| | - Julie Martinez
- Nutrition Unit, Biochemistry Laboratory, University Hospital Grenoble-Alpes, 38043 Grenoble cedex 9, France
| | - Véronique Ducros
- Nutrition Unit, Biochemistry Laboratory, University Hospital Grenoble-Alpes, 38043 Grenoble cedex 9, France.
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3
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Baudry J, Ducros V, Druesne-Pecollo N, Galan P, Hercberg S, Debrauwer L, Amiot MJ, Lairon D, Kesse-Guyot E. Some Differences in Nutritional Biomarkers are Detected Between Consumers and Nonconsumers of Organic Foods: Findings from the BioNutriNet Project. Curr Dev Nutr 2019; 3:nzy090. [PMID: 30842992 PMCID: PMC6397420 DOI: 10.1093/cdn/nzy090] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 09/27/2018] [Accepted: 11/14/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Meta-analyses have compared the nutrient content of both organic and nonorganic foods. However, the impacts of such variations on human nutritional biomarkers still need to be assessed. OBJECTIVE In a nested clinical study from the NutriNet-Santé study, we aimed to compare the nutritional status of "organic" and "nonorganic" food consumers matched on a propensity score. METHODS Based on self-reported organic food consumption assessed through a food frequency questionnaire (FFQ), 150 low and 150 high organic food consumers were selected with <10% or >50% of organic food in their diet, respectively (expressed as the proportion of organic food in the whole diet in g/d). Participants were matched using a propensity score derived from socio-demographic, food, and health variables. Fasting plasma samples were analyzed using acknowledged laboratory methods for measurements of iron status, magnesium, copper, cadmium, carotenoids, vitamins A and E, and fatty acids. RESULTS We found significant differences between low and high organic food consumers with similar dietary patterns, with respect to plasma concentrations of magnesium, fat-soluble micronutrients (α-carotene, β-carotene, lutein, and zeaxanthin), fatty acids (linoleic, palmitoleic, γ-linolenic, and docosapentanoeic acids), and some fatty acid desaturase indexes. No differences between the 2 groups were detected for plasma concentrations of iron, copper, cadmium, lycopene, β-cryptoxanthin, or vitamins A and E. CONCLUSION If confirmed by other studies, our data suggest that a high consumption of organic foods, compared with very low consumption, modulates to some extent, the nutritional status of individuals with similar dietary patterns. Further research including prospective cohort studies is needed to evaluate the clinical relevance of such differences.
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Affiliation(s)
- Julia Baudry
- Nutritional Epidemiology Research team (EREN), Paris 13 University, Inserm (U1153), Inra (U1125), Sorbonne Paris City Epidemiology and Statistics Center, Cnam, COMUE Sorbonne-Paris- City, Bobigny, France
| | - Véronique Ducros
- Biochemistry department, Grenoble-Alpes Hospital, Grenoble cedex 9, France
| | - Nathalie Druesne-Pecollo
- Nutritional Epidemiology Research team (EREN), Paris 13 University, Inserm (U1153), Inra (U1125), Sorbonne Paris City Epidemiology and Statistics Center, Cnam, COMUE Sorbonne-Paris- City, Bobigny, France
| | - Pilar Galan
- Nutritional Epidemiology Research team (EREN), Paris 13 University, Inserm (U1153), Inra (U1125), Sorbonne Paris City Epidemiology and Statistics Center, Cnam, COMUE Sorbonne-Paris- City, Bobigny, France
| | - Serge Hercberg
- Nutritional Epidemiology Research team (EREN), Paris 13 University, Inserm (U1153), Inra (U1125), Sorbonne Paris City Epidemiology and Statistics Center, Cnam, COMUE Sorbonne-Paris- City, Bobigny, France
- Public Health Department, Avicenne hospital, AP-HP, Bobigny, France
| | - Laurent Debrauwer
- Toxalim, Université de Toulouse University, INRA, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Marie Josèphe Amiot
- MOISA, Université Montpellier University, CIRAD, CIHEAM-IAMM, INRA, Montpellier SupAgro, Montpellier, France
| | - Denis Lairon
- Aix Marseille University, INSERM, INRA, Marseille, France
| | - Emmanuelle Kesse-Guyot
- Nutritional Epidemiology Research team (EREN), Paris 13 University, Inserm (U1153), Inra (U1125), Sorbonne Paris City Epidemiology and Statistics Center, Cnam, COMUE Sorbonne-Paris- City, Bobigny, France
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4
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Fournier A, Mondillon L, Dantzer C, Gauchez AS, Ducros V, Mathieu N, Faure P, Canini F, Bonaz B, Pellissier S. Emotional overactivity in patients with irritable bowel syndrome. Neurogastroenterol Motil 2018; 30:e13387. [PMID: 29856118 DOI: 10.1111/nmo.13387] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 05/02/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Negativity is often observed in patients with irritable bowel syndrome (IBS). No study has examined their emotional expressiveness as a marker of emotional reactivity. We investigated IBS patients' vulnerability to an emotional load by associating their expressiveness with psychological and neurophysiological assessments. We hypothesized that IBS would be characterized by a lack of expressiveness coupled with high scores in psychological and neurophysiological parameters. METHODS We assessed the emotional facial expressions (EMFACS), psychological (anxiety, depression, alexithymia), and neurophysiological (cortisol, heart rate variability (HRV)) parameters of 25 IBS patients and 26 healthy controls (HC) while they watched fear-eliciting movie extracts. KEY RESULTS Overall, the task elicited an increase in state anxiety and consistent HRV responses. However, IBS patients differed from HC as they displayed more sadness and tended to display more rage. Contrary to HC, IBS patients showed an increase in heart rate and a decrease in parasympathetic regulation, reflecting an enhanced responsiveness corroborated by higher scores in depression and state anxiety. Consistent with their higher difficulty in identifying feelings, a component of alexithymia positively correlated with their expressions of rage, they were not aware of their increase in anxiety during the task, whereas HC were. No linear relationship between patients' expressions and their neurophysiological responses was found. CONCLUSIONS & INFERENCES Irritable bowel syndrome patients displayed greater emotional expressiveness with negative prevalence. This reflects an emotional vulnerability potentially related to low regulation skills and underscores the importance of considering the central dysregulation hypothesis in IBS as a promising avenue of research.
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Affiliation(s)
- A Fournier
- CNRS, LAPSCO, Physiological and Psychosocial Stress, University Clermont Auvergne, Clermont-Ferrand, France
| | - L Mondillon
- CNRS, LAPSCO, Physiological and Psychosocial Stress, University Clermont Auvergne, Clermont-Ferrand, France
| | - C Dantzer
- Laboratory of Psychology, Bordeaux University, Bordeaux, France
| | - A-S Gauchez
- Biology Institute, Grenoble Alpes University Hospital, Grenoble, France
| | - V Ducros
- Biology Institute, Grenoble Alpes University Hospital, Grenoble, France
| | - N Mathieu
- Grenoble Alpes University Hospital, University Clinic of Hepato-Gastroenterology, Grenoble, France
| | - P Faure
- Biology Institute, Grenoble Alpes University Hospital, Grenoble, France.,Grenoble Alpes University Hospital, University Clinic of Hepato-Gastroenterology, Grenoble, France.,Hypoxia Pathophysiology Laboratory (H2P, INSERM U1042), Grenoble, France
| | - F Canini
- Department of Neurosciences and Operational Constraints, Armed Forces Biomedical Research Institute, Brétigny-sur-Orge, France.,Ecole du Val de Grâce, Paris, France
| | - B Bonaz
- Grenoble Alpes University Hospital, University Clinic of Hepato-Gastroenterology, Grenoble, France.,Hypoxia Pathophysiology Laboratory (H2P, INSERM U1042), Grenoble, France.,Department of Neurosciences and Operational Constraints, Armed Forces Biomedical Research Institute, Brétigny-sur-Orge, France.,Ecole du Val de Grâce, Paris, France.,Grenoble Institute of Neurosciences (GIN), INSERM, University Grenoble Alpes, Grenoble, France
| | - S Pellissier
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, LIP/PC2S, 38000 Grenoble, France
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5
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Dumontet T, Sahut-Barnola I, Septier A, Montanier N, Plotton I, Roucher-Boulez F, Ducros V, Lefrançois-Martinez AM, Pointud JC, Zubair M, Morohashi KI, Breault DT, Val P, Martinez A. Adrenocortical development: Lessons from mouse models. Ann Endocrinol (Paris) 2018; 79:95-97. [PMID: 29673697 DOI: 10.1016/j.ando.2018.03.014] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The adrenocortical gland undergoes structural and functional remodelling in the fetal and postnatal periods. After birth, the fetal zone of the gland undergoes rapid involution in favor of the definitive cortex, which reaches maturity with the emergence of the zona reticularis(zR) at the adrenarche. The mechanisms underlying the adrenarche, the process leading to pre-puberty elevation of plasma androgens in higher primates, remain unknown, largely due to lack of any experimental model. By following up fetal and definitive cortex cell lines in mice, we showed that activation of protein kinase A (PKA) signaling mainly impacts the adult cortex by stimulating centripetal regeneration, with differentiation and then conversion of the zona fasciculata into a functional zR. Animals developed Cushing syndrome associated with primary hyperaldosteronism, suggesting possible coexistence of these hypersecretions in certain patients. Remarkably, all of these traits were sex-dependent: testicular androgens promoted WNT signaling antagonism on PKA, slowing cortical renewal and delaying onset of Cushing syndrome and the establishment of the zR in male mice, this being corrected by orchidectomy. In conclusion, zR derives from centripetal conversion of the zona fasciculata under cellular renewal induced by PKA signaling, determining the size of the adult cortex. Finally, we demonstrated that this PKA-dependent mobilization of cortical progenitors is sexually dimorphic and could, if confirmed in humans, account for female preponderance in adrenocortical pathologies.
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Affiliation(s)
- Typhanie Dumontet
- GReD, CNRS, Inserm, université Clermont-Auvergne, 63001 Clermont-Ferrand, France
| | | | - Amandine Septier
- GReD, CNRS, Inserm, université Clermont-Auvergne, 63001 Clermont-Ferrand, France
| | | | - Ingrid Plotton
- Molecular endocrinology and rare diseases, university hospital, Claude-Bernard Lyon 1 University, 69500 Bron, France
| | - Florence Roucher-Boulez
- Molecular endocrinology and rare diseases, university hospital, Claude-Bernard Lyon 1 University, 69500 Bron, France
| | - Véronique Ducros
- Unit of hormone and nutrition, department of biochemistry, university hospital, 38000 Grenoble, France
| | | | | | - Mohamad Zubair
- Department of molecular biology, graduate school of medical sciences, Kyushu University, Fukuoka, Japan
| | - Ken-Ichirou Morohashi
- Department of molecular biology, graduate school of medical sciences, Kyushu University, Fukuoka, Japan
| | - David T Breault
- Division of endocrinology, Boston Children's Hospital, department of pediatrics, Harvard Medical School, Boston, MA, United States; Harvard Stem Cell Institute, Cambridge, MA, United States
| | - Pierre Val
- GReD, CNRS, Inserm, université Clermont-Auvergne, 63001 Clermont-Ferrand, France
| | - Antoine Martinez
- GReD, CNRS, Inserm, université Clermont-Auvergne, 63001 Clermont-Ferrand, France.
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6
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Dumontet T, Sahut-Barnola I, Septier A, Montanier N, Plotton I, Roucher-Boulez F, Ducros V, Lefrançois-Martinez AM, Pointud JC, Zubair M, Morohashi KI, Breault DT, Val P, Martinez A. PKA signaling drives reticularis differentiation and sexually dimorphic adrenal cortex renewal. JCI Insight 2018; 3:98394. [PMID: 29367455 DOI: 10.1172/jci.insight.98394] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [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: 10/31/2017] [Accepted: 12/19/2017] [Indexed: 01/19/2023] Open
Abstract
The adrenal cortex undergoes remodeling during fetal and postnatal life. How zona reticularis emerges in the postnatal gland to support adrenarche, a process whereby higher primates increase prepubertal androgen secretion, is unknown. Using cell-fate mapping and gene deletion studies in mice, we show that activation of PKA has no effect on the fetal cortex, while it accelerates regeneration of the adult cortex, triggers zona fasciculata differentiation that is subsequently converted into a functional reticularis-like zone, and drives hypersecretion syndromes. Remarkably, PKA effects are influenced by sex. Indeed, testicular androgens increase WNT signaling that antagonizes PKA, leading to slower adrenocortical cell turnover and delayed phenotype whereas gonadectomy sensitizes males to hypercorticism and reticularis-like formation. Thus, reticularis results from ultimate centripetal conversion of adult cortex under the combined effects of PKA and cell turnover that dictate organ size. We show that PKA-induced progenitor recruitment is sexually dimorphic and may provide a paradigm for overrepresentation of women in adrenal diseases.
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Affiliation(s)
- Typhanie Dumontet
- GReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | | | - Amandine Septier
- GReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | | | - Ingrid Plotton
- Molecular Endocrinology and Rare Diseases, University Hospital, Claude Bernard Lyon 1 University, Bron, France
| | - Florence Roucher-Boulez
- Molecular Endocrinology and Rare Diseases, University Hospital, Claude Bernard Lyon 1 University, Bron, France
| | - Véronique Ducros
- Unit of Hormone and Nutrition, Department of Biochemistry, Toxicology and Pharmacology, University Hospital, Grenoble, France
| | | | | | - Mohamad Zubair
- Department of Molecular Biology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Ken-Ichirou Morohashi
- Department of Molecular Biology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - David T Breault
- Division of Endocrinology, Boston Children's Hospital, Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA.,Harvard Stem Cell Institute, Cambridge, Massachusetts, USA
| | - Pierre Val
- GReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
| | - Antoine Martinez
- GReD, Université Clermont Auvergne, CNRS, INSERM, Clermont-Ferrand, France
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7
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Boulet L, Monteremal J, Meunier C, Ducros V, Besson G, Corne C. Mise au point du dosage sanguin des métabolites de la voie du tryptophane en HPLC-MS/MS et perspectives dans le suivi biologique des patients atteints de phénylcétonurie. Arch Pediatr 2016. [DOI: 10.1016/j.arcped.2016.07.021] [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: 10/20/2022]
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8
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Weill A, Ducros V, Cognard C, Piotin M, Moret J. “Corrosion” of Tungsten Spirals. A Disturbing Finding. Interv Neuroradiol 2016; 4:337-40. [DOI: 10.1177/159101999800400412] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/1998] [Accepted: 09/20/1998] [Indexed: 11/15/2022] Open
Abstract
Very long-term (more than 30 months after treatment) skull plain films of patients treated with Mechanical Detachable Spirals “MDS” (tungsten) for intracranial aneurysm or dural fistula by venous approach, showed a decreasing level of radiopacity of the spirals suggesting that this material was resorbing with time. To date, all the aneurysms selectively treated with “MDS” which were followed-up by angiography more than 30 months after treatment (three cases) showed recanalization. The recanalization was proportional to degree of the “corrosion”.
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Affiliation(s)
| | - V. Ducros
- Laboratoire de Biochimie C, Hôpital de la Tronche, CHU; Grenoble Cedex, France
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Belaidi N, Georges A, Lacroix I, Croisonnier A, Ducros V, Souberbielle JC, Corcuff JB. Hypercalcemia and elevated concentration of vitamin D: A case report too easy to be true. Clin Chim Acta 2016; 457:123-4. [PMID: 27095608 DOI: 10.1016/j.cca.2016.04.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 04/10/2016] [Accepted: 04/13/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND Endogenous (heterophile, human anti-animal …) antibodies are a known cause of interference in immunoassays. CASE REPORT A patient with hypercalcemia and low PTH levels was investigated. The serum 25OH vitamin D (25OHD) concentration was above the analytical range of the automated analyser (>150ng/mL) but serum dilutions were not linear. A myeloma-related monoclonal peak of immunoglobulin G (30g/L) was found. RESULTS Alternative 25OHD assays (RIA, automated analysers, mass spectrometry) all found concentrations <25ng/mL. NabTM columns (Thermo Scientific) eliminated the endogenous immunoglobulin from the serum thus allowing the initial analyser to provide correct results. DISCUSSION AND CONCLUSION The potentially misleading point was that the apparent very high 25OHD levels were concomitant with hypercalcemia and low PTH levels thus mimicking vitamin D intoxication. Identifying assay interferences requires clinical awareness but, when suspected, one should be aware that technical tools or alternate assays are available to correct some interferences, including monoclonal immunoglobulins.
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Affiliation(s)
- Nassima Belaidi
- Laboratoire d'hormonologie, CHU de Bordeaux, 33604 Pessac, France
| | - Agnès Georges
- Laboratoire d'hormonologie, CHU de Bordeaux, 33604 Pessac, France; Groupe de Biologie Spécialisé, Société Française de Médecine Nucléaire, 75270 Paris, France
| | - Isabelle Lacroix
- Groupe de Biologie Spécialisé, Société Française de Médecine Nucléaire, 75270 Paris, France; Laboratoire Cerba, 95310 Saint-Ouen, l'Aumône, France
| | - Anne Croisonnier
- Laboratoire, Groupe Hospitalier Mutualiste, Clinique des Eaux Claires, 38000 Grenoble, France
| | - Véronique Ducros
- Département de biochimie, toxicologie et pharmacologie, CHU de Grenoble, 38043 Grenoble, France
| | | | - Jean-Benoît Corcuff
- Laboratoire d'hormonologie, CHU de Bordeaux, 33604 Pessac, France; Groupe de Biologie Spécialisé, Société Française de Médecine Nucléaire, 75270 Paris, France; Laboratoire Nutrition et Neurobiologie intégrée, UMR 1286, Université de Bordeaux, 33076 Bordeaux, France.
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10
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Monneret D, Tamisier R, Ducros V, Faure P, Halimi S, Baguet JP, Lévy P, Pépin JL, Borel AL. Glucose tolerance and cardiovascular risk biomarkers in non-diabetic non-obese obstructive sleep apnea patients: Effects of long-term continuous positive airway pressure. Respir Med 2016; 112:119-25. [PMID: 26847407 DOI: 10.1016/j.rmed.2016.01.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 12/05/2015] [Revised: 01/20/2016] [Accepted: 01/21/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND Insulin resistance, glucose dyshomeostasis and oxidative stress are associated to the cardiovascular consequences of obstructive sleep apnea (OSA). The effects of a long-term continuous positive airway pressure (LT-CPAP) treatment on such mechanisms still remain conflicting. OBJECTIVE To investigate the effect of LT-CPAP on glucose tolerance, insulin sensitivity, oxidative stress and cardiovascular biomarkers in non-obese non-diabetic OSA patients. PATIENTS & METHODS Twenty-eight apneic, otherwise healthy, men suffering from OSA (mean age = 48.9 ± 9.4 years; apnea-hypopnea index = 41.1 ± 16.1 events/h; BMI = 26.6 ± 2.8 kg/m(2); fasting glucose = 4.98 ± 0.37 mmol/L) were evaluated before and after LT-CPAP by an oral glucose tolerance test (OGTT), measuring plasma glucose, insulin and proinsulin. Glycated hemoglobin, homeostasis model assessment resistance insulin, blood lipids, oxidative stress, homocysteine and NT-pro-brain natriuretic peptide (NT-proBNP) were also measured. RESULTS LT-CPAP treatment lasted 13.9 ± 6.5 months. At baseline, the time spent at SaO2<90%, minimal and mean SaO2 were associated with insulin area under the curve during OGTT (r = 0.448, P = 0.011; r = -0.382; P = 0.047 and r = -0.424; P = 0.028, respectively) and most other glucose/insulin homeostasis biomarkers, as well as with homocysteine (r = 0.531, P = 0.006; r = -0.487; P = 0.011 and r = -0.409; P = 0.034, respectively). LT-CPAP had no effect on all the OGTT-related measurements, but increased plasma total antioxidant status (+7.74%; P = 0.035) in a duration-dependent manner (r = 0.607; P < 0.001), and decreased both homocysteine (-15.2%; P = 0.002) and NT-proBNP levels (-39.3%; P = 0.002). CONCLUSIONS In non-obese non-diabetic OSA patients, nocturnal oxygen desaturation is strongly associated to insulin resistance. LT-CPAP does not improve glucose homeostasis nor insulin sensitivity but has a favorable effect on antioxidant capacity and cardiovascular risk biomarkers.
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Affiliation(s)
- D Monneret
- HP2 Laboratory, Inserm U1042, Grenoble Alpes University, Grenoble, France; Department of Biochemistry Toxicology and Pharmacology, Biology & Pathology Institute, Grenoble University Hospital, Grenoble, France.
| | - R Tamisier
- HP2 Laboratory, Inserm U1042, Grenoble Alpes University, Grenoble, France; Sleep, Exercise and Physiology Laboratory, EFCR, Grenoble University Hospital, Grenoble, France
| | - V Ducros
- Department of Biochemistry Toxicology and Pharmacology, Biology & Pathology Institute, Grenoble University Hospital, Grenoble, France
| | - P Faure
- HP2 Laboratory, Inserm U1042, Grenoble Alpes University, Grenoble, France; Department of Biochemistry Toxicology and Pharmacology, Biology & Pathology Institute, Grenoble University Hospital, Grenoble, France
| | - S Halimi
- Department of Endocrinology, Pole DIGIDUNE, Grenoble University Hospital, Grenoble, France
| | - J P Baguet
- Department of Cardiology, Grenoble University Hospital, Grenoble, France
| | - P Lévy
- HP2 Laboratory, Inserm U1042, Grenoble Alpes University, Grenoble, France; Sleep, Exercise and Physiology Laboratory, EFCR, Grenoble University Hospital, Grenoble, France
| | - J L Pépin
- HP2 Laboratory, Inserm U1042, Grenoble Alpes University, Grenoble, France; Sleep, Exercise and Physiology Laboratory, EFCR, Grenoble University Hospital, Grenoble, France
| | - A L Borel
- HP2 Laboratory, Inserm U1042, Grenoble Alpes University, Grenoble, France; Department of Endocrinology, Pole DIGIDUNE, Grenoble University Hospital, Grenoble, France
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Meunier C, Blondelle D, Faure P, Baguet JP, Le Goff C, Chabre O, Ducros V. Development and validation of a method using supported liquid extraction for aldosterone determination in human plasma by LC-MS/MS. Clin Chim Acta 2015; 447:8-15. [PMID: 25982778 DOI: 10.1016/j.cca.2015.05.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [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: 03/27/2014] [Revised: 05/08/2015] [Accepted: 05/09/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND Accurate quantitation of aldosterone is essential for screening, diagnosis and subtype classification in primary aldosteronism. A simple, sensitive method for aldosterone in human plasma using supported liquid extraction (SLE) in combination with liquid chromatography tandem mass spectrometry (LC-MS/MS) was developed and validated. METHODS Plasma samples were diluted with water containing d7-aldosterone as internal standard. The samples were extracted with methyl-tert-butyl-ether (MTBE) on SLE cartridges. Separation was carried out on a Luna C18 (2) column using a methanol-water gradient. Detection was performed in the negative electrospray multiple reaction monitoring (MRM) quantitation. The use of water-based calibrators was evaluated against calibrators prepared in steroid-free serum. RESULTS The assay was linear up to 3265pmol/L with an LOQ of approximately 40pmol/L. Within-run and between-run precision for plasma aldosterone were less than 10% except at low level near LOQ but were still less than 14.7% (Westgard's desirable specification). The mean recovery of the analyte added to plasma was greater than 97.7% and matrix effects were less than 4%. Comparison with another LC-MS/MS method was performed on a more sensitive instrument (ABSciex TQ 5500) and gave the equation API 3000=0.957×TQ 5500+12.6, linear regression r(2)=0.974 (n=43). An estimation of the reference interval for adults was established on a group of healthy volunteers (n=53). Calibration with water-based calibrators was validated and can be used for measurement of aldosterone by LC-MS/MS. CONCLUSIONS This method is reliable, easy to perform on plasma specimens in a clinical environment and is attractive because of its simplicity.
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Affiliation(s)
- Cécile Meunier
- Unit of Hormone and Nutrition, Department of Biochemistry, Toxicology and Pharmacology, University Hospital, Grenoble, France.
| | - Dominique Blondelle
- Unit of Hormone and Nutrition, Department of Biochemistry, Toxicology and Pharmacology, University Hospital, Grenoble, France.
| | - Patrice Faure
- Unit of Hormone and Nutrition, Department of Biochemistry, Toxicology and Pharmacology, University Hospital, Grenoble, France; HP2 Laboratory (INSERM U1042), The Joseph Fourier University, Grenoble, France.
| | - Jean-Philippe Baguet
- Unit of Hypertension, Department of Cardiology, University Hospital, Grenoble, France; INSERM U1039, The Joseph Fourier University, Grenoble, France.
| | - Caroline Le Goff
- Department of Clinical Chemistry, University of Liège, CHU Sart-Tilman, Liège, Belgium.
| | - Olivier Chabre
- Department of Endocrinology, University Hospital, Grenoble, France.
| | - Véronique Ducros
- Unit of Hormone and Nutrition, Department of Biochemistry, Toxicology and Pharmacology, University Hospital, Grenoble, France.
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Meunier C, Montérémal J, Faure P, Ducros V. Four years of LC–MS/MS method for quantification of 25-hydroxyvitamin D (D2+D3) for clinical practice. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 989:54-61. [DOI: 10.1016/j.jchromb.2015.02.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 02/07/2015] [Accepted: 02/28/2015] [Indexed: 01/29/2023]
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Denimal D, Ducros V, Dupré T, Dousset B, Meunier C, Aho S, Guilland JC, Lemaire-Ewing S. Agreement of seven 25-hydroxy vitamin D₃ immunoassays and three high performance liquid chromatography methods with liquid chromatography tandem mass spectrometry. Clin Chem Lab Med 2015; 52:511-20. [PMID: 24152903 DOI: 10.1515/cclm-2013-0434] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 09/24/2013] [Indexed: 11/15/2022]
Abstract
BACKGROUND Several recent studies have shown some discrepancies between 25-hydroxyvitamin D [25(OH)D] assay methods, despite some improvement in the past few years. The accuracy of 25(OH)D assay methods is still a real challenge for clinical laboratories. The aim of this study was to assess the agreement between a large panel of routine assays and a two-dimensional liquid chromatography/tandem mass spectrometry (2D LC-MS/MS) method, selected as the reference method. METHODS Forty-nine human plasma samples with only endogenous 25(OH)D₃ were analyzed with 11 different methods, especially with three LC-UV methods that differed in the extraction step. Seven routine immunoassays were also tested: two manual (RIA and EIA from IDS) and five fully-automated methods. The results of the 25(OH)D₃ assays were compared with those of the 2D LC-MS/MS method using weighted Deming regression analysis, Bland-Altman plots and concordance correlation coefficient (CCC). The ability of these methods to properly classify patients was evaluated by sorting results depending on vitamin D status. RESULTS The CCC was >0.90 for the three LC-UV methods and for most of the automated IA, meaning substantial agreement with 2D LC-MS/MS results. The ability to properly classify patients according to their vitamin D status was overall satisfactory for most of the methods tested (concordance >90%). CONCLUSIONS The immunoassays available on Liaison, Isys, Architect and Elecsys, together with our in-house LC-UV method preceded by an SLE step met the minimum requirements for the assessment of vitamin D status in clinical laboratories.
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Pellissier S, Dantzer C, Mondillon L, Trocme C, Gauchez AS, Ducros V, Mathieu N, Toussaint B, Fournier A, Canini F, Bonaz B. Relationship between vagal tone, cortisol, TNF-alpha, epinephrine and negative affects in Crohn's disease and irritable bowel syndrome. PLoS One 2014; 9:e105328. [PMID: 25207649 PMCID: PMC4160179 DOI: 10.1371/journal.pone.0105328] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 07/20/2014] [Indexed: 12/27/2022] Open
Abstract
Crohn's disease (CD) and irritable bowel syndrome (IBS) involve brain-gut dysfunctions where vagus nerve is an important component. The aim of this work was to study the association between vagal tone and markers of stress and inflammation in patients with CD or IBS compared to healthy subjects (controls). The study was performed in 73 subjects (26 controls, 21 CD in remission and 26 IBS patients). The day prior to the experiment, salivary cortisol was measured at 8:00 AM and 10:00 PM. The day of the experiment, subjects completed questionnaires for anxiety (STAI) and depressive symptoms (CES-D). After 30 min of rest, ECG was recorded for heart rate variability (HRV) analysis. Plasma cortisol, epinephrine, norepinephrine, TNF-alpha and IL-6 were measured in blood samples taken at the end of ECG recording. Compared with controls, CD and IBS patients had higher scores of state-anxiety and depressive symptomatology. A subgroup classification based on HRV-normalized high frequency band (HFnu) as a marker of vagal tone, showed that control subjects with high vagal tone had significantly lower evening salivary cortisol levels than subjects with low vagal tone. Such an effect was not observed in CD and IBS patients. Moreover, an inverse association (r = -0.48; p<0.05) was observed between the vagal tone and TNF-alpha level in CD patients exclusively. In contrast, in IBS patients, vagal tone was inversely correlated with plasma epinephrine (r = -0.39; p<0.05). No relationship was observed between vagal tone and IL-6, norepinephrine or negative affects (anxiety and depressive symptomatology) in any group. In conclusion, these data argue for an imbalance between the hypothalamus-pituitary-adrenal axis and the vagal tone in CD and IBS patients. Furthermore, they highlight the specific homeostatic link between vagal tone and TNF-alpha in CD and epinephrine in IBS and argue for the relevance of vagus nerve reinforcement interventions in those diseases.
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Affiliation(s)
- Sonia Pellissier
- Grenoble Institut des Neurosciences (GIN), Centre de Recherche INSERM 836 Equipe : Stress et Interactions Neuro-Digestives (EA3744), Université Joseph Fourier, Grenoble, France
- Département de Psychologie, Université de Savoie, Chambéry, France
| | - Cécile Dantzer
- Laboratoire Interuniversitaire de Psychologie: Personnalité, Cognition, Changement social (LIP/PC2S), Université de Savoie, Chambéry, France
| | - Laurie Mondillon
- Laboratoire de Psychologie Sociale et Cognitive (LAPSCO, CNRS UMR6024), Université Blaise Pascal, Clermont-Ferrand, France
| | - Candice Trocme
- Institut de Biologie, Centre Hospitalo-Universitaire de Grenoble, Grenoble, France
| | - Anne-Sophie Gauchez
- Institut de Biologie, Centre Hospitalo-Universitaire de Grenoble, Grenoble, France
| | - Véronique Ducros
- Institut de Biologie, Centre Hospitalo-Universitaire de Grenoble, Grenoble, France
| | - Nicolas Mathieu
- Clinique Universitaire d’Hépato-Gastroentérologie, Centre Hospitalo-Universitaire de Grenoble, Grenoble, France
| | - Bertrand Toussaint
- Institut de Biologie, Centre Hospitalo-Universitaire de Grenoble, Grenoble, France
- Laboratoire TIMC/TheREx UMR 5525, Université Joseph Fourier, Grenoble, France
| | - Alicia Fournier
- Laboratoire de Psychologie Sociale et Cognitive (LAPSCO, CNRS UMR6024), Université Blaise Pascal, Clermont-Ferrand, France
| | - Frédéric Canini
- Unité de Neurophysiologie du Stress, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge, France
- Ecole du Val de Grâce, Paris, France
| | - Bruno Bonaz
- Grenoble Institut des Neurosciences (GIN), Centre de Recherche INSERM 836 Equipe : Stress et Interactions Neuro-Digestives (EA3744), Université Joseph Fourier, Grenoble, France
- Clinique Universitaire d’Hépato-Gastroentérologie, Centre Hospitalo-Universitaire de Grenoble, Grenoble, France
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Pouchieu C, Galan P, Ducros V, Latino-Martel P, Hercberg S, Touvier M. Plasma carotenoids and retinol and overall and breast cancer risk: a nested case-control study. Nutr Cancer 2014; 66:980-8. [PMID: 25072980 DOI: 10.1080/01635581.2014.936952] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Experimental studies suggest that carotenoids and retinol may play a role in carcinogenesis, but epidemiological evidence is lacking. We investigated the prospective associations between plasma concentrations of major carotenoids and retinol, and overall and breast cancer risk. A nested case-control study included all first incident cancer cases diagnosed in the SU.VI.MAX cohort between 1994 and 2002 (n = 159 cases, 1 matched control/case). Baseline plasma concentrations of carotenoids and retinol were measured by high-performance liquid chromatography. Conditional logistic regression was used to assess odds ratios for an increase of 0.1 μmol/L [odds ratio (OR)] and 95% confidence intervals (CI). Plasma β-carotene (OR = 0.95, 95% CI = 0.90-0.99, Ptrend = 0.04) and β-cryptoxanthin concentrations (OR = 0.89, 95% CI = 0.81-0.99, Ptrend = 0.03) were inversely associated with overall cancer risk. Plasma β-cryptoxanthin concentration was inversely associated with breast cancer risk (OR = 0.83, 95% CI = 0.71-0.96, Ptrend = 0.02). The OR between plasma lycopene concentration and overall cancer risk was 1.07 (0.99-1.15), Ptrend = 0.06. This association turned significant (Ptrend = 0.01) when excluding cancer cases diagnosed during the first year of follow-up. This prospective study suggests an inverse association between plasma concentrations of β-cryptoxanthin and both overall and breast cancer risk, and an inverse association between β-carotene and overall cancer risk. The direct association between lycopene concentration and cancer risk deserves further investigation.
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Affiliation(s)
- Camille Pouchieu
- a Sorbonne Paris Cité Research Center, Nutritional Epidemiology Research Team, Inserm U557, Inra U1125, Cnam , Paris 13 University , Bobigny , France
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Forceville X, Touati S, Le Toumelin P, Ducros V, Laporte F, Chancerelle Y, Agay D. Elements of margin of safety, toxicity and action of sodium selenite in a lipopolysaccharide rat model. J Trace Elem Med Biol 2014; 28:303-10. [PMID: 24813451 DOI: 10.1016/j.jtemb.2014.03.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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: 06/13/2013] [Revised: 02/20/2014] [Accepted: 03/31/2014] [Indexed: 12/25/2022]
Abstract
PROJECT Both septic shock and sodium selenite (Na2SeO3) lead to multiple organ failure through oxidation. Na2SeO3 has direct oxidant effects above the nutritional level and indirect anti-oxidant properties. In a lipopolysaccharide (LPS) rat model we assessed margin of safety, toxicity and beneficial effect of pentahydrate Na2SeO3 (5H2O·Na2SeO3) at oxidant doses. PROCEDURE In a three-step study on 204 rats we: (i) observed toxic effects of Na2SeO3 injected intraperitoneously (IP) and determined its Minimum Dose Without Toxic effect (MDWT) 0.25-0.35 mg/kg selenium (Se) content; (ii) injected IP LPS at 70% lethal dose (LD) followed, or not, one hour later by IP Na2SeO3 at MDWT and (iii) by doses>MDWT. At 48 h, in survivors, we measured plasma creatinine, lactate, aspartate and alanine aminotransferase (AST, ALT), nitric oxide (NO) and Se concentrations. RESULTS (i) Na2SeO3 alone did not increase NO and lactate. Encephalopathy appeared at 1mg Se/kg. Creatinine increased at 1-1.75 mg Se/kg, AST, ALT at 3-4.5 mg Se/kg, and the minimum LD was 3 mg Se/kg. (ii) Mortality after LPS was 37/50 (74%, [62-86%]) vs. 20/30 (67%, [50-84%]) when followed by Na2SeO3 at MDWT (p=0.483) with a decreased in NO (-31%, p=0.038) a trend for lactate decrease (-19%, p=0.068) and an increased Se in plasma of survivals. (iii) All rats died at doses ≥0.6 mg/kg (p<0.001). CONCLUSION Mechanisms of LPS and Na2SeO3 toxicity differ (i.e. NO, lactate). In septic shock 5H2O·Na2SeO3 toxicity increased, margin of safety decrease, but IP administration of dose considered as oxidant of 5H2O·Na2SeO3 showed beneficial effects.
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Affiliation(s)
- Xavier Forceville
- Centre Hospitalier de Meaux, Réanimation Polyvalente, 77104 Meaux, France.
| | - Samia Touati
- Centre Hospitalier de Meaux, Réanimation Polyvalente, 77104 Meaux, France
| | | | - Véronique Ducros
- CHU de Grenoble, Département de Biochimie Toxicologie & Pharmacologie, UF de Biochimie Hormonologie & Nutrition, BP 217, 38043 Grenoble cedex 9, France
| | - François Laporte
- CHU de Grenoble, Département de Biochimie Toxicologie & Pharmacologie, UF de Biochimie Hormonologie & Nutrition, BP 217, 38043 Grenoble cedex 9, France
| | - Yves Chancerelle
- Institut de Recherche Biomédicale des Armées, Département des Effets Biologiques des Rayonnements, 24 avenue des Maquis du Grésivaudan - BP 87, 38702 La Tronche, France
| | - Diane Agay
- Institut de Recherche Biomédicale des Armées, Département des Effets Biologiques des Rayonnements, 24 avenue des Maquis du Grésivaudan - BP 87, 38702 La Tronche, France
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Pouchieu C, Galan P, Ducros V, Latino-Martel P, Hercberg S, Touvier M. P015 Étude prospective des liens entre concentrations plasmatiques en caroténoïdes et rétinol et risque de cancer (au global et du sein). NUTR CLIN METAB 2013. [DOI: 10.1016/s0985-0562(13)70348-0] [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: 10/25/2022]
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Simone B, De Stefano V, Leoncini E, Zacho J, Martinelli I, Emmerich J, Rossi E, Folsom AR, Almawi WY, Scarabin PY, den Heijer M, Cushman M, Penco S, Vaya A, Angchaisuksiri P, Okumus G, Gemmati D, Cima S, Akar N, Oguzulgen KI, Ducros V, Lichy C, Fernandez-Miranda C, Szczeklik A, Nieto JA, Torres JD, Le Cam-Duchez V, Ivanov P, Cantu-Brito C, Shmeleva VM, Stegnar M, Ogunyemi D, Eid SS, Nicolotti N, De Feo E, Ricciardi W, Boccia S. Risk of venous thromboembolism associated with single and combined effects of Factor V Leiden, Prothrombin 20210A and Methylenetethraydrofolate reductase C677T: a meta-analysis involving over 11,000 cases and 21,000 controls. Eur J Epidemiol 2013; 28:621-47. [PMID: 23900608 DOI: 10.1007/s10654-013-9825-8] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Accepted: 07/02/2013] [Indexed: 12/16/2022]
Abstract
Genetic and environmental factors interact in determining the risk of venous thromboembolism (VTE). The risk associated with the polymorphic variants G1691A of factor V (Factor V Leiden, FVL), G20210A of prothrombin (PT20210A) and C677T of methylentetrahydrofolate reductase (C677T MTHFR) genes has been investigated in many studies. We performed a pooled analysis of case-control and cohort studies investigating in adults the association between each variant and VTE, published on Pubmed, Embase or Google through January 2010. Authors of eligible papers, were invited to provide all available individual data for the pooling. The Odds Ratio (OR) for first VTE associated with each variant, individually and combined with the others, were calculated with a random effect model, in heterozygotes and homozygotes (dominant model for FVL and PT20210A; recessive for C677T MTHFR). We analysed 31 databases, including 11,239 cases and 21,521 controls. No significant association with VTE was found for homozygous C677T MTHFR (OR: 1.38; 95 % confidence intervals [CI]: 0.98-1.93), whereas the risk was increased in carriers of either heterozygous FVL or PT20210 (OR = 4.22; 95 % CI: 3.35-5.32; and OR = 2.79;95 % CI: 2.25-3.46, respectively), in double heterozygotes (OR = 3.42; 95 %CI 1.64-7.13), and in homozygous FVL or PT20210A (OR = 11.45; 95 %CI: 6.79-19.29; and OR: 6.74 (CI 95 % 2.19-20.72), respectively). The stratified analyses showed a stronger effect of FVL on individuals ≤ 45 years (p value for interaction = 0.036) and of PT20210A in women using oral contraceptives (p-value for interaction = 0.045). In this large pooled analysis, inclusive of large studies like MEGA, no effect was found for C677T MTHFR on VTE; FVL and PT20210A were confirmed to be moderate risk factors. Notably, double carriers of the two genetic variants produced an impact on VTE risk significantly increased but weaker than previously thought.
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Affiliation(s)
- Benedetto Simone
- Institute of Public Health - Section of Hygiene, Department of Public Health, Università Cattolica del Sacro Cuore, L.go F.Vito 1, 00168, Rome, Italy
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Tlili A, Jacobs F, de Koning L, Mohamed S, Bui LC, Dairou J, Belin N, Ducros V, Dubois T, Paul JL, Delabar JM, De Geest B, Janel N. Hepatocyte-specific Dyrk1a gene transfer rescues plasma apolipoprotein A-I levels and aortic Akt/GSK3 pathways in hyperhomocysteinemic mice. Biochim Biophys Acta 2013; 1832:718-28. [PMID: 23429073 DOI: 10.1016/j.bbadis.2013.02.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2013] [Accepted: 02/11/2013] [Indexed: 11/17/2022]
Abstract
Hyperhomocysteinemia, characterized by high plasma homocysteine levels, is recognized as an independent risk factor for cardiovascular diseases. The increased synthesis of homocysteine, a product of methionine metabolism involving B vitamins, and its slower intracellular utilization cause increased flux into the blood. Plasma homocysteine level is an important reflection of hepatic methionine metabolism and the rate of processes modified by B vitamins as well as different enzyme activity. Lowering homocysteine might offer therapeutic benefits. However, approximately 50% of hyperhomocysteinemic patients due to cystathionine-beta-synthase deficiency are biochemically responsive to pharmacological doses of B vitamins. Therefore, effective treatments to reduce homocysteine levels are needed, and gene therapy could provide a novel approach. We recently showed that hepatic expression of DYRK1A, a serine/threonine kinase, is negatively correlated with plasma homocysteine levels in cystathionine-beta-synthase deficient mice, a mouse model of hyperhomocysteinemia. Therefore, Dyrk1a is a good candidate for gene therapy to normalize homocysteine levels. We then used an adenoviral construct designed to restrict expression of DYRK1A to hepatocytes, and found decreased plasma homocysteine levels after hepatocyte-specific Dyrk1a gene transfer in hyperhomocysteinemic mice. The elevation of pyridoxal phosphate was consistent with the increase in cystathionine-beta-synthase activity. Commensurate with the decreased plasma homocysteine levels, targeted hepatic expression of DYRK1A resulted in elevated plasma paraoxonase-1 activity and apolipoprotein A-I levels, and rescued the Akt/GSK3 signaling pathways in aorta of mice, which can prevent homocysteine-induced endothelial dysfunction. These results demonstrate that hepatocyte-restricted Dyrk1a gene transfer can offer a useful therapeutic targets for the development of new selective homocysteine lowering therapy.
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Affiliation(s)
- Asma Tlili
- Univ Paris Diderot, Sorbonne Paris Cité, Unit of Functional and Adaptative Biology, EAC-CNRS 4413, 75013 Paris, France
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Bihan H, Mejean C, Castetbon K, Faure H, Ducros V, Galan P, Le Clesiau H, Peneau S, Hercberg S. O61 Des chèques fruits et légumes : impact d’une étude d’intervention sur la consommation de fruits et légumes chez des personnes précaires. NUTR CLIN METAB 2011. [DOI: 10.1016/s0985-0562(11)70065-6] [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: 10/14/2022]
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Bihan H, Méjean C, Castetbon K, Faure H, Ducros V, Sedeaud A, Galan P, Le Clésiau H, Péneau S, Hercberg S. Impact of fruit and vegetable vouchers and dietary advice on fruit and vegetable intake in a low-income population. Eur J Clin Nutr 2011; 66:369-75. [PMID: 21989324 DOI: 10.1038/ejcn.2011.173] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES Lower-income subgroups consume fewer servings of fruit and vegetables (FVs) compared with their more advantaged counterparts. To overcome financial barriers, FV voucher delivery has been proposed. SUBJECTS/METHODS In a 12-month trial, 302 low-income adults 18-60 years old (defined by evaluation of deprivation and inequalities in health examination centers, a specific deprivation score) were randomized into two groups: dietary advice alone ('advice'), or dietary advice plus FV vouchers ('FV vouchers') (10-40 euros/month) exchangeable for fresh fruits and vegetables. Self-reported data were collected on FV consumption and socioeconomic status at baseline, 3, 9 and 12 months. Anthropometric and blood pressure measurements were conducted at these periods, as well as blood samples obtained for determination of vitamins. Descriptive analyses, multiple linear regression and logistic regression were performed to evaluate the impact of FV. RESULTS Between baseline and 3-month follow-up, mean FV consumption increased significantly in both the 'advice' (0.62±1.29 times/day, P=0.0004) and 'FV vouchers' groups (0.74±1.90, P=0.002), with no difference between groups. Subjects in the FV vouchers group had significantly decreased risk of low FV consumption (<1 time/day) compared with those in the advice group (P=0.008). No change was noted in vitamin levels (vitamin C and β-carotene). The high number of lost-to-follow-up cases did not permit analysis at 9 or 12 months. CONCLUSION In the low-income population, FV voucher delivery decreased the proportion of low FV consumers at 3 months. Longer-term studies are needed to assess their impact on nutritional status.
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Affiliation(s)
- H Bihan
- UMR U557 INSERM; U1125 INRA; Université Paris 13; Centre de Recherche en Nutrition Humaine IdF, Bobigny, France.
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Ghodbane S, Amara S, Garrel C, Arnaud J, Ducros V, Favier A, Sakly M, Abdelmelek H. Selenium supplementation ameliorates static magnetic field-induced disorders in antioxidant status in rat tissues. Environ Toxicol Pharmacol 2011; 31:100-106. [PMID: 21787674 DOI: 10.1016/j.etap.2010.09.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2009] [Revised: 08/31/2010] [Accepted: 09/17/2010] [Indexed: 05/31/2023]
Abstract
The aim of this study was to investigate the effect of selenium supplementation on the antioxidant enzymatic system (such as GPx, GR and SOD), GSH and selenium level in liver, kidney, muscle and brain of static magnetic field (SMF) exposed rats. Male adult rats were divided into control rats (n=6), SMF-exposed rats (128 mT; 1h/day for 5 days), selenium-treated rats (Na(2)SeO(3), 0.2mg/l, in drinking water for 4 weeks) and co-exposed rats (selenium for 4 weeks and SMF during the last 5 consecutive days). Sub-acute exposure to SMF induces a decrease of selenium levels in kidney, muscle and brain. Our results also revealed a decrease of GPx activities in kidney and muscle. By contrast, SMF exposure increased total GSH levels and total SOD activities in liver, while glutathione reductase activity is unaffected. Selenium supplementation in SMF-exposed rats restored selenium levels in kidney, muscle and brain and elevated the activities of GPx in kidney and muscle to those of control group. In the liver, selenium supplementation failed to bring down the elevated levels of total GSH and SOD activity. Our investigations suggested that sub-acute exposure to SMF altered the antioxidant response by decreasing the level of total selenium in kidney, muscle and brain. Interestingly, selenium supplementation ameliorates antioxidant capacity in rat tissues exposed to SMF.
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Affiliation(s)
- Soumaya Ghodbane
- Laboratoire de Physiologie Intégrée, Faculté des Sciences de Bizerte, Jarzouna, Tunisia.
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Noll C, Planque C, Ripoll C, Guedj F, Diez A, Ducros V, Belin N, Duchon A, Paul JL, Badel A, de Freminville B, Grattau Y, Bléhaut H, Herault Y, Janel N, Delabar JM. DYRK1A, a novel determinant of the methionine-homocysteine cycle in different mouse models overexpressing this Down-syndrome-associated kinase. PLoS One 2009; 4:e7540. [PMID: 19844572 PMCID: PMC2760102 DOI: 10.1371/journal.pone.0007540] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2009] [Accepted: 09/25/2009] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Hyperhomocysteinemia, characterized by increased plasma homocysteine level, is associated with an increased risk of atherosclerosis. On the contrary, patients with Down syndrome appear to be protected from the development of atherosclerosis. We previously found a deleterious effect of hyperhomocysteinemia on expression of DYRK1A, a Down-syndrome-associated kinase. As increased expression of DYRK1A and low plasma homocysteine level have been associated with Down syndrome, we aimed to analyze the effect of its over-expression on homocysteine metabolism in mice. METHODOLOGY/PRINCIPAL FINDINGS Effects of DYRK1A over-expression were examined by biochemical analysis of methionine metabolites, real-time quantitative reverse-transcription polymerase chain reaction, and enzyme activities. We found that over-expression of Dyrk1a increased the hepatic NAD(P)H:quinone oxidoreductase and S-adenosylhomocysteine hydrolase activities, concomitant with decreased level of plasma homocysteine in three mice models overexpressing Dyrk1a. Moreover, these effects were abolished by treatment with harmine, the most potent and specific inhibitor of Dyrk1a. The increased NAD(P)H:quinone oxidoreductase and S-adenosylhomocysteine hydrolase activities were also found in lymphoblastoid cell lines from patients with Down syndrome. CONCLUSIONS/SIGNIFICANCE Our results might give clues to understand the protective effect of Down syndrome against vascular defect through a decrease of homocysteine level by DYRK1A over-expression. They reveal a link between the Dyrk1a signaling pathway and the homocysteine cycle.
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Affiliation(s)
- Christophe Noll
- University Paris Diderot-CNRS EAC 4413, Unit of Functional and Adaptive Biology (BFA), Paris, France
| | - Chris Planque
- University Paris Diderot-CNRS EAC 4413, Unit of Functional and Adaptive Biology (BFA), Paris, France
| | - Clémentine Ripoll
- University Paris Diderot-CNRS EAC 4413, Unit of Functional and Adaptive Biology (BFA), Paris, France
| | - Fayçal Guedj
- University Paris Diderot-CNRS EAC 4413, Unit of Functional and Adaptive Biology (BFA), Paris, France
| | - Anna Diez
- University Paris Diderot-CNRS EAC 4413, Unit of Functional and Adaptive Biology (BFA), Paris, France
| | - Véronique Ducros
- Département de Biologie Intégrée, unité fonctionnelle de nutrition, CHU Grenoble, Grenoble, France
| | - Nicole Belin
- Département de Biologie Intégrée, unité fonctionnelle de nutrition, CHU Grenoble, Grenoble, France
| | - Arnaud Duchon
- UMR6218 CNRS, Immunology and Molecular Embryology, UPS44, Institut de Transgenose, Orléans, France
| | - Jean-Louis Paul
- AP-HP, Hôpital Européen Georges Pompidou, Service de Biochimie, Paris, France
- Université Paris-Sud, UMR 1154-INRA, Faculté de Pharmacie, Châtenay-Malabry, France
| | - Anne Badel
- UMR-S 973, molécule thérapeutique in silico, University Paris Diderot, Paris, France
| | | | | | | | - Yann Herault
- UMR6218 CNRS, Immunology and Molecular Embryology, UPS44, Institut de Transgenose, Orléans, France
| | - Nathalie Janel
- University Paris Diderot-CNRS EAC 4413, Unit of Functional and Adaptive Biology (BFA), Paris, France
| | - Jean-Maurice Delabar
- University Paris Diderot-CNRS EAC 4413, Unit of Functional and Adaptive Biology (BFA), Paris, France
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Pelus E, Arnaud J, Ducros V, Faure H, Favier A, Roussel AM. Trace element (Cu, Zn, Fe, Mn, Se) intakes of a group of French men using the duplicate diet technique. Int J Food Sci Nutr 2009. [DOI: 10.3109/09637489409167018] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Ducros V, Ruffieux D, Belva-Besnet H, de Fraipont F, Berger F, Favier A. Determination of dansylated polyamines in red blood cells by liquid chromatography-tandem mass spectrometry. Anal Biochem 2009; 390:46-51. [PMID: 19364488 DOI: 10.1016/j.ab.2009.04.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2008] [Revised: 04/07/2009] [Accepted: 04/07/2009] [Indexed: 11/26/2022]
Abstract
The concentration of polyamines in red blood cells (RBCs) is considered to be an index of cell proliferation. This index has been demonstrated to be of clinical importance for the follow-up and treatment of some cancer patients. The concentration of polyamines in RBCs is usually determined by high-performance liquid chromatography (HPLC) with fluorescence detection. In the current work, we present a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the quantification of putrescine, spermidine, and spermine, the three major polyamines in RBCs. The polyamines were dansylated and analyzed by an LC gradient of 20-min duration on a C18 column on-line with a tandem mass spectrometer. An internal standard (1,8-diaminooctane) was used for quantification. This method exhibited excellent linearity for the three polyamines with regression coefficients higher than 0.99. The limits of detection for putrescine, spermidine, and spermine were 0.10, 0.75, and 0.50 pmol/ml, respectively. The intrarun precision values for putrescine, spermidine, and spermine all were better than 10%, and the interrun precision values were 13%, 9%, and 20%, respectively. The LC-MS/MS method is sufficiently simple and reliable enough to replace the currently used HPLC method with fluorescence detection in which putrescine is not always detectable.
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Affiliation(s)
- Véronique Ducros
- Département de Biologie Intégrée, Centre Hospitalier Universitaire, 38043 Grenoble cedex, France.
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Noll C, Hamelet J, Ducros V, Belin N, Paul JL, Delabar JM, Janel N. Resveratrol supplementation worsen the dysregulation of genes involved in hepatic lipid homeostasis observed in hyperhomocysteinemic mice. Food Chem Toxicol 2009; 47:230-6. [DOI: 10.1016/j.fct.2008.11.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2008] [Accepted: 11/01/2008] [Indexed: 11/25/2022]
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Ducros V, Andriollo-Sanchez M, Arnaud J, Meunier N, Laporte F, Hininger-Favier I, Coudray C, Ferry M, Roussel AM. Zinc supplementation does not alter plasma homocysteine, vitamin B12 and red blood cell folate concentrations in French elderly subjects. J Trace Elem Med Biol 2009; 23:15-20. [PMID: 19203712 DOI: 10.1016/j.jtemb.2008.08.003] [Citation(s) in RCA: 11] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2007] [Revised: 07/15/2008] [Accepted: 08/04/2008] [Indexed: 11/24/2022]
Abstract
BACKGROUND/AIMS In ageing, low folates and vitamin B12 status are frequent and can explain the increase of plasma homocysteine level. Zinc is involved in the folates and vitamin B12 metabolism with opposite actions. The aim of this study was to investigate the effects of zinc supplementation on homocysteine and vitamin B12 plasma levels as well as red blood cell folate level in French ageing subjects participating in the ZENITH study. METHODS Apparently healthy middle-aged (55-70 years) and free-living older (70-85 years) subjects were enrolled. They were randomly allocated to three groups: 0, 15 or 30 mg Zn per day for 6 months as zinc gluconate in addition to their usual dietary intake. RESULTS At baseline, plasma homocysteine levels (15.2+/-3.5 micromol/L) in older people were higher than in the middle-aged subjects (12.7+/-2.7 micromol/L) and was negatively correlated with vitamin B12 values (p=0.0036, r=-0.215) and with RBC folate levels (p<0.0001, r=-0.30). These results are in agreement with previous data. However, we found no correlation between the biomarkers of zinc status and homocysteine, vitamin B12 or folate levels at baseline. Moreover, 6-month zinc supplementation did not modify homocysteine, vitamin B12 and RBC folate values in either of the groups. CONCLUSIONS Zinc supplementation at moderate doses do not lead to deleterious effect on folate or vitamin B12 status in ageing healthy free-living people, but does not have any beneficial effects on homocysteine metabolism either.
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Affiliation(s)
- Véronique Ducros
- Département de Biologie Intégrée, CHU de Grenoble, Grenoble F-38043, France.
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Ducros V, Barro C, Yver J, Pernod G, Polack B, Carpentier P, Desruet MD, Bosson JL. Should plasma homocysteine be used as a biomarker of venous thromboembolism? A case-control study. Clin Appl Thromb Hemost 2008; 15:517-22. [PMID: 18818229 DOI: 10.1177/1076029608322548] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Mild or moderate hyperhomocysteinemia as a risk factor for venous thrombosis is still a matter of debate. The strength of this study is to bring a body of elements to evaluate whether hyperhomocysteinemia should be used as a biomarker for venous thromboembolism (VTE). These elements consist of a biological evaluation of several hematological risk factors, and an original control group made of patients with a negative Doppler ultrasonography. A total of 151 cases and 155 controls were included. Total plasma homocysteine level, MTHFR C677T polymorphism, inherited abnormalities of the natural anticoagulant system as well as plasma folate and cobalamin levels were determined. A total of 41 (27.2 %) of cases and only 9 (5.8%) of controls had at least one of the coagulation defects studied. No significant difference was observed for total homocysteine levels between the 2 groups: median (interquartile range) = 8.3 (7.2-10.8) micromol/L for cases and 8.4 (7-10.9) micromol/L for controls. We found significantly more plasma folates and/or cobalamin deficiencies in controls (18.3%) than in cases (8.6%). After adjustment for several variables significantly related to risk factors of VTE, hyperhomocysteinemia (>13.2 micromol/L) was not found statistically associated with VTE: odds ratio 1.36 (95% confidence interval, 0.52-3.54). The prevalence of the homozygous 677TT polymorphism in the MTHFR gene was not increased in cases compared with controls. Mild or moderate hyperhomocysteinemia does not seem to be a strong determinant in VTE not only when the control group does not exclusively include healthy persons but also in investigated disease-free (thromboembolic disease) controls.
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Affiliation(s)
- Véronique Ducros
- Département de Biologie Intégrée Centre Hospitalier Universitaire, BP 217 X, 38043 Grenoble cedex 9, France.
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Roblin X, Genevois M, Ducros V, Zarski JP, Leroy V. Biermer's anemia: a new cause of cholestasis and hepatic steatosis? Dig Dis Sci 2007; 52:3366-8. [PMID: 17436084 DOI: 10.1007/s10620-007-9761-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2006] [Accepted: 01/01/2007] [Indexed: 12/20/2022]
Affiliation(s)
- Xavier Roblin
- Département d'Hépato-gastroentérologie, CHU Grenoble, Grenoble, France.
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Intorre F, Polito A, Andriollo-Sanchez M, Azzini E, Raguzzini A, Toti E, Zaccaria M, Catasta G, Meunier N, Ducros V, O'Connor JM, Coudray C, Roussel AM, Maiani G. Effect of zinc supplementation on vitamin status of middle-aged and older European adults: the ZENITH study. Eur J Clin Nutr 2007; 62:1215-23. [PMID: 17622255 DOI: 10.1038/sj.ejcn.1602844] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [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: 11/08/2022]
Abstract
OBJECTIVE To assess the effects of zinc supplementation on vitamin status in middle-aged and older volunteers. SUBJECTS/METHODS Three hundred and eighty-seven healthy middle-aged (55-70 years) and older (70-85 years) men and women, randomly allocated to three groups to receive 15 or 30 mg Zn/day or placebo for 6 months. Dietary intake was assessed by means of a validated 4-day recall record. Fasting blood samples were simultaneously analysed for levels of plasma retinol and alpha-tocopherol by high-performance liquid chromatography. Erythrocyte folates were measured by a competitive immunoassay with direct chemiluminescence detection on an automatized immunoanalyser. Biochemical measurements were performed at baseline and after 3 and 6 months of zinc supplementation. RESULTS Plasma vitamin A levels were significantly increased proportionally with zinc dose and period of treatment, particularly at 6 months (for 15 mg Zn/day, P<0.05; for 30 mg Zn/day, P<0.0001); no significant changes were observed in the placebo group. There was no effect of zinc supplementation on vitamin E/cholesterol ratio and erythrocyte folates. CONCLUSIONS Our results show that a long-term zinc supplementation increases plasma vitamin A levels in middle-aged and older people of similar characteristics to those involved in this study. Moreover, supplementation influences serum zinc levels but does not affect erythrocyte zinc concentration and both plasma vitamin E and erythrocyte folate status.
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Affiliation(s)
- F Intorre
- Human Nutrition Unit, National Institute for Research on Food and Nutrition, Via Ardeatina 546, Rome, Italy.
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Belkhiria MN, Ducros V, Harzallah K, Jarraya F, Cordonnier D, Favier A, Achour A. [Evaluation of plasmatic homocysteine determination by gas chromatography-mass spectrometry]. Ann Biol Clin (Paris) 2007; 65:393-8. [PMID: 17627920] [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] [Received: 01/15/2007] [Accepted: 04/25/2007] [Indexed: 05/16/2023]
Abstract
Total plasma homocysteine emerged in the past few years as an independent risk factor for cardiovascular diseases. This test is now currently prescribed for the diagnosis of unexplained thrombosis in young adults or recurrent thrombosis in patients with arteriopathy. This sulphured amino-acid is an important intermediate in transsulfuration and remethylation pathways of methionine metabolism. Within the context of a collaboration between Monastir and Grenoble Universities and because a gas chromatograph mass spectrometer (GC-MS) instrument was available in Monastir, we proposed to transpose a GC-MS method previously developed in Grenoble's hospital for this parameter and to validate it by comparison with the liquid chromatography tandem mass spectrometry (LC-MS-MS) method, used at present. Analytical performances were good: detection limit 0.4 micromol/L and linear range up to 4 mg/L (29.6 micromol/L), and between-run and within-run precision with coefficients of variation < 5% and < 8 %, respectively. The comparison with LC-MS-MS method showed a good correlation (y = 0.9874 x -0.208; r(2) = 0.84). Mean difference from LC-MS-MS was -0.4 micromol/L. Plasma concentrations of homocysteine (mean + SD) determined among Tunisian adults, 29 men, 27 women, of the same age were respectively: 11.6 +/- 2.4 micromol/L and 10.1 +/- 2.7 micromol/L, p = 0.025. This method is now currently used to evaluate tHcy concentration in patients with risk factors for cardiovascular disease.
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Affiliation(s)
- M N Belkhiria
- Laboratoire de pharmacologie, Faculté de médecine de Monastir, Tunisie.
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Abstract
BACKGROUND A high prevalence of osteoporosis is observed in Crohn's disease. Recent data have shown that homocysteinaemia is an important risk factor in low-bone mineralization and fracture. AIM To look for an association between homocysteinaemia and low-bone mineralization in Crohn's disease patients. PATIENTS AND METHODS Ninety-two consecutive patients (sex ratio M/F 0.87; mean age: 36.6 +/- 13.2 years) were recruited between 2003 and 2005. Bone densitometry was performed on inclusion. The following parameters were analysed: age, sex, Crohn's Disease Activity Index, duration and extent of Crohn's disease, smoking status, corticosteroid treatment, immunosuppressive drugs, plasma homocysteine, folate and vitamin B12 concentration. RESULTS The prevalence of a high homocysteine level (>15 micromol/L) was 60%. Osteoporosis and low-bone mineralization observed in 26 (28%), and 60 (65%) patients, respectively. On a multivariate analysis, associated factors for osteoporosis and low-bone mineralization were respectively: hyperhomocysteinaemia (OR: 61.4; CI: 95: 23-250; P < 0.001), and ileal Crohn's disease [OR: 13.8; CI: 95: 2.5-150; P = 0.036] for osteoporosis and hyperhomocysteinaemia [OR: 63.7; CI: 95: 8.5-250; P < 0.001] and disease duration of at least 5 years [OR: 11.4; CI: 95: 1.31-99; P = 0.039] for low-bone mineralization. Results were similar whichever site osteoporosis was detected. CONCLUSION Hyperhomocysteinaemia was observed in 60% of our Crohn's disease patients and was strongly associated with low-bone mineralization and osteoporosis (OR: 61.4).
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Affiliation(s)
- X Roblin
- Department of Gastroenterology and Liver Diseases, CHU de Grenoble, Grenoble, France.
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Ducros V, Belva-Besnet H, Casetta B, Favier A. A robust liquid chromatography tandem mass spectrometry method for total plasma homocysteine determination in clinical practice. Clin Chem Lab Med 2006; 44:987-90. [PMID: 16879066 DOI: 10.1515/cclm.2006.178] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [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: 11/15/2022]
Abstract
BACKGROUND Total plasma homocysteine has emerged as an independent risk factor for vascular disease. To meet increasing requests by clinicians for this homocysteine determination, a rapid assay for a routine use has been developed. METHODS A robust, stable, isotope-dilution liquid chromatography tandem mass spectrometry (LC/MS/MS) method is described, including all the practical details and analytical performance results. RESULTS The method allows homocysteine quantitation over a linear working range up to 100 micromol/L, with the limit of quantification estimated at a low value of 0.09 micromol/L. Total analytical imprecision is less than 4%. Accuracy was assessed by measuring the homocysteine concentration in a serum Standard Reference Material. CONCLUSIONS The method was demonstrated to be quick, reliable and cheap after 1 year of use on a time-shared instrument in our hospital unit.
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Affiliation(s)
- Véronique Ducros
- Département de Biologie Intégrée, Centre Hospitalier Universitaire, Grenoble, France.
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Abstract
OBJECTIVE To determine if there is a cross-sectional association between homocysteine (tHcy) level and measures of gait and balance in elderly subjects. METHODS We studied 3,609 noninstitutionalized subjects aged 65 to 85 years from the Dijon (France) center of the Three-City Study. tHcy concentration was measured from fasting blood samples. Motor function was assessed by measuring walking speed and by using a modified version of the Tinetti scale. RESULTS After adjustment for confounders, mean maximum walking speed (MWS) decreased with increasing tHcy levels (p = 0.001). The odds ratio (OR) (95% CI) for having a MWS below the 40th percentile was 1.9 (1.4 to 2.5) in subjects with tHcy levels in the upper quintile compared with those in the lowest quintile. Compared with subjects in the lowest tHcy quintile, the OR for having a modified Tinetti score below 16 ranged from 1.0 (0.8 to 1.4) in the second quintile to 1.9 (1.3 to 2.6) in the upper quintile (p < 0.0001). CONCLUSIONS Elevated homocysteine concentrations are associated with worse motor performances in the elderly. These findings support the hypothesis of a vascular contribution to motor function.
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Affiliation(s)
- A Soumaré
- INSERM Unit 708, Université Pierre et Marie Curie-Paris, France
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Polito A, Intorre F, Andriollo-Sanchez M, Azzini E, Raguzzini A, Meunier N, Ducros V, O'Connor JM, Coudray C, Roussel AM, Maiani G. Estimation of intake and status of vitamin A, vitamin E and folate in older European adults: the ZENITH. Eur J Clin Nutr 2006; 59 Suppl 2:S42-7. [PMID: 16254580 DOI: 10.1038/sj.ejcn.1602297] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [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: 11/09/2022]
Abstract
OBJECTIVE To report selected dietary intake and vitamin status at baseline of volunteers participating in the ZENITH study and the correlation of vitamin status with zinc. DESIGN A multicentre prospective intervention study employing a randomised double-blind design. SETTING Clermont-Ferrand, Theix (France), Coleraine (Northern Ireland), Grenoble (France), Rome (Italy). PARTICIPANTS In total, 387 healthy middle-aged (55-70 y) and older (70-87 y) men and women participated in the study. METHODS Dietary intake was assessed by means of a validated 4-d recall record. Fasting blood samples were simultaneously analysed for retinol and alpha-tocopherol by the HLPC method. Erythrocyte folates were measured by a competitive immunoassay with direct chemiluminescence detection on an automatised immunoanalyser. RESULTS In all centres, men had a significantly (P < 0.0001) higher mean nutrient intake than women. Comparison between age-groups showed that older individuals had significantly lower intakes of macro- and selected micronutrients than middle-aged subjects (P < 0.0001). A high fat intake (from 36 to 40% of total energy) was observed in all examined groups. In relation to biochemical measures of vitamin status, all parameters were above their respective cut-off values for normality and, thus, none of the subjects had biochemical evidence of deficiency of these selected vitamins. A moderate correlation was found with plasma vitamin A and serum zinc (r = 0.12, P < 0.05) or red blood cell zinc (r = 0.12, P < 0.01) and with erythrocyte folates and red blood cell zinc (r = 0.11, P < 0.05). CONCLUSIONS There were only moderate differences in the nutrient intake of the ZENITH study volunteers among the four European centres. Their biochemical status for retinol, alpha-tocopherol and folate appeared adequate.
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Affiliation(s)
- A Polito
- National Institute for Food and Nutrition Research, Human Nutrition Unit, Rome, Italy.
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Sandre C, Agay D, Ducros V, Faure H, Cruz C, Alonso A, Chancerelle Y, Roussel AM. Kinetic Changes of Oxidative Stress and Selenium Status in Plasma and Tissues following Burn Injury in Selenium-Deficient and Selenium-Supplemented Rats. ACTA ACUST UNITED AC 2006; 60:627-34. [PMID: 16531865 DOI: 10.1097/01.ta.0000205640.82459.d6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [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: 11/25/2022]
Abstract
BACKGROUND This study investigates the relationship between the burn-induced oxidative stress and the selenium status. METHODS The rats were fed with a selenium-adequate diet or a selenium-depleted diet for 5 weeks, before a third-degree thermal injury was applied to the animals. One group of selenium-depleted animals received injections of sodium selenite after the injury. The selenium status and the oxidative stress parameters were measured for 5 days. RESULTS The selenium-deficient diet leads to oxidative stress with a high stimulation of the superoxide dismutase activity. After the burn injury, the oxidative stress appears important because the initial selenium status is already impaired and, in all animals, the selenium levels and the antioxidant seleno-dependent glutathione peroxidase (GPx) activity decrease in the plasma and the tissues. A treatment with daily selenium injections is efficient in normalizing selenium levels and restores the GPx activity, but fails to counteract the initial oxidative damages induced by the selenium-deficient diet. CONCLUSIONS The selenium status before the burn injury is a modulating factor of the burn-induced oxidative stress. A single selenium supplement is not sufficient to counteract these oxidative damages and henceforth combined antioxidant supplementations should be investigated to improve the early treatment of the burn patients.
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Affiliation(s)
- Caroline Sandre
- Laboratoire de Nutrition, Vieillissement et Maladies Cardiovasculaires, Faculté de Pharmacie, La Tronche, France
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Roblin X, Germain E, Phelip JM, Ducros V, Pofelski J, Heluwaert F, Oltean P, Faucheron JL, Bonaz B. Hyperhomocystéinémie et facteurs associés au cours des MICI : étude prospective chez 81 patients. Rev Med Interne 2006; 27:106-10. [PMID: 16376461 DOI: 10.1016/j.revmed.2005.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2005] [Accepted: 11/04/2005] [Indexed: 12/31/2022]
Abstract
BACKGROUND A high prevalence (52%) of hyperhomocysteinemia is observed in Crohn disease (CD), however it is not well documented in ulcerative colitis (UC). Furthermore, in the different works studying hyperhomocysteinemia the associated factors are different. AIM Prospective evaluation of hyperhomocysteinemia in inflammatory bowel disease (IBD) patients, of the risk factors and the determination of a potential risk of colorectal carcinoma in case of hyperhomocysteinemia. PATIENTS AND METHODS IBD patients followed in our department were prospectively recruited between November 2003-September 2004. To be included patients should have passed a coloscopy in the two years. Patients with kidney failure or drugs supposed, to interfere with homocystéine metabolism (folates, vitamin B12, methotrexate) were excluded from the study. The following parameters were analysed: age, sex, clinical activity indexes (CDAI for Crohn disease and CAI for ulcerative colitis), length-extent and type of the disease (CD or UC), smoking, plasma homocystein concentration, folates and vitamin B12. RESULTS Eighty-one patients (60 CD, 21 UC, mean age 43.8 +/- 17.3) were included, 30 had an active disease at inclusion and 16 were smokers. The prevalence of high homocystein concentration was 55.6%. In univariate analysis a low rate of folates was the only risk factor for a high homocystein concentration (74 vs. 52.8%; P = 0.018). Smoking was almost an associated factor. In multivariate analysis, a low rate of folate was the only risk factor of hyperhomocysteinemia, OR = 3.59 [1.27-10.17]. Five endoscopic lesions considered as precancerous were described; these patients had all a hyperhomocysteinemia. CONCLUSION The prevalence of hyperhomocysteinemia is high in UC and in CD. A low folate rate is the only risk factor observed in our study. There is a possible link between colorectal cancer and hyperhomocysteinemia. A high Plasma homocystein concentration must be search in inflammatory bowel disease patients and a substitutive treatment of folates and vitamin B12 is necessary in case of hyperhomocysteinemia.
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Affiliation(s)
- X Roblin
- Département d'hépatogastroentérologie, département de biologie appliquée, CHU de Grenoble, France.
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Ducros V, Rousset J, Garambois K, Boujet C, Rolland MO, Valenti K, Bouillet L, Jaillard A, Favier A. Hyperhomocystéinémie sévère révélant une homocystinurie chez deux jeunes adultes présentant un phénotype peu marqué. Rev Med Interne 2006; 27:140-3. [PMID: 16298022 DOI: 10.1016/j.revmed.2005.09.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2005] [Accepted: 09/27/2005] [Indexed: 11/18/2022]
Abstract
INTRODUCTION To the request of total plasma homocysteine determination in the investigation of vascular disease, diagnosis of homocystinuria in young adult patients with mild phenotype is not so rare. EXEGESIS A 26-year-old man developed embolic cerebral infarction and a 22-year-old woman presented a right renal venous thrombosis one week after delivery. In each case, high concentration of total plasma homocysteine was first found and plasma and urinary amino acids analysis later on directed the diagnosis towards homocystinuria. Finally, reduced skin fibroblast cystathionine beta-synthase activity confirmed the diagnosis of homocystinuria. CONCLUSION Total plasma homocysteine determination must be determined for screening for hyperhomocysteinemia in young adults with venous thromboembolism without characteristic phenotypic features of homocystinuria.
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Affiliation(s)
- V Ducros
- Département de biologie intégrée, CHU, Grenoble, France.
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de Bree A, Mennen LI, Zureik M, Ducros V, Guilland JC, Nicolas JP, Emery-Fillon N, Blacher J, Hercberg S, Galan P. Homocysteine is not associated with arterial thickness and stiffness in healthy middle-aged French volunteers. Int J Cardiol 2005; 113:332-40. [PMID: 16364473 DOI: 10.1016/j.ijcard.2005.11.045] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2005] [Revised: 10/26/2005] [Accepted: 11/15/2005] [Indexed: 11/21/2022]
Abstract
BACKGROUND To study the association between the total plasma homocysteine (tHcy) concentration and the carotid artery intima-medial wall thickness (IMT), pulse wave velocity (PWV) and the presence of arterial plaques in a French population. METHODS Cross-sectional analysis of data from 556 male and 559 female middle-aged participants (mean (+/-SD) age 59.6+/-4.7 years) provided by an ongoing intervention trial. RESULTS Mean geometric tHcy concentration was higher for men than for women (10.6 vs. 8.5 micromol/L, p<0.001) and was associated in the expected direction with known determinants. The mean IMT was 0.71+/-0.1 mm for men and 0.69+/-0.1 mm for women (p<0.001), the mean PWV was, respectively, 12.0+/-2.8 and 10.9+/-2.2 m/sec (p<0.001), and the percentages of subjects with plaques were, respectively, 40.8% and 22.7% (p<0.001). In men only, the age-adjusted mean IMT and PWV increased with an increasing tHcy concentration: the IMT was 0.71 mm in the first tHcy-quartile and 0.73 mm in the fourth tHcy-quartile (p for linear trend=0.03), the PWV values were, respectively, 11.6 and 12.4 m/sec (p for linear trend=0.01). These associations disappeared after adjustment for conventional cardiovascular disease risk factors. CONCLUSION In this population, the tHcy concentration was not associated with measures of arterial thickness and stiffness.
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Affiliation(s)
- Angelika de Bree
- Unilever Food and Health Research Institute, Unilever Research and Development, Vlaardingen, The Netherlands.
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Eitenschenck L, Armari-Alla C, Plantaz D, Pagnier A, Ducros V. [Belated decompensation of an Imerslund-Grasbeck disease]. Arch Pediatr 2005; 12:1729-31. [PMID: 16289772 DOI: 10.1016/j.arcped.2005.09.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2004] [Accepted: 09/07/2005] [Indexed: 11/16/2022]
Abstract
Imerslund-Gräsbeck disease is an autosomic recessive disease characterised by a megaloblastic anemia due to a vitamin B12 deficiency and by a moderate proteinuria without kidney failure. It is caused by the malabsorption of Cobalamin-intrinsic factor complex bringing into play cubulin and other proteins (megaline, amnioless), some mutations of which are described at present. We report herein the observation of a child whose diagnosis was made belatedly during an acute decompensation with biological hemophagocytic syndrome. Its evolution was marked by the appearance of neurological disorders at the beginning of the vitamin B12 substitution treatment. These disorder regressed as the dosage was increase. The purpose of this observation is to recapitulate the main characteristics of this disease and to review the current data.
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Affiliation(s)
- L Eitenschenck
- Département de pédiatrie, CHU de Grenoble, BP 217, 38043 Grenoble, France.
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Descamps O, Riondel J, Ducros V, Roussel AM. Mitochondrial production of reactive oxygen species and incidence of age-associated lymphoma in OF1 mice: Effect of alternate-day fasting. Mech Ageing Dev 2005; 126:1185-91. [PMID: 16126250 DOI: 10.1016/j.mad.2005.06.007] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2005] [Revised: 06/15/2005] [Accepted: 06/15/2005] [Indexed: 11/22/2022]
Abstract
There is currently of a great interest investigating the role of nutrition in the prevention of age-associated disorders. The present study aimed to evaluate, on a particular strain of mice, the efficacy of alternate-day fasting on the mitochondrial production of free radical species and on the incidence of a specific cancer (lymphoma) in aged mice. Alternate fasting, that was initiated in middle age mice through a 4 month period, reduced significantly the incidence of lymphoma (0% versus 33% for controls). No remarkable difference was observed in the overall food consumption between alternate-fed (AF) and ad libitum (AL) mice, suggesting that the efficacy of alternate fasting did not really depend on calorie restriction. A significant decrease in the mitochondrial generation of reactive oxygen species (ROS) that was associated with a significant increase in spleen mitochondria SOD activity was observed when mice were maintained on intermittent fasting. Our results suggest that alternate fasting could exert a beneficial antioxidant effect and a modulation of the oxidative stress associated with aging.
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Affiliation(s)
- Olivier Descamps
- Laboratoire de Nutrition, Vieillissement, Maladies Cardio-vasculaires, Faculté de Pharmacie, Université de Grenoble, Domaine de la Merci, 38706 la Tronche, France
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Agay D, Sandre C, Ducros V, Faure H, Cruz C, Alonso A, Roussel AM, Chancerelle Y. Optimization of selenium status by a single intraperitoneal injection of Se in Se-deficient rat: possible application to burned patient treatment. Free Radic Biol Med 2005; 39:762-8. [PMID: 16109306 DOI: 10.1016/j.freeradbiomed.2005.04.024] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2004] [Revised: 01/25/2005] [Accepted: 04/28/2005] [Indexed: 11/16/2022]
Abstract
In order to investigate the efficiency of a single selenium (Se) administration in restoring selenium status, Se and antioxidant enzymes were studied in an animal model of Se depletion. In Se-depleted animals receiving or not a single parenteral administration of Se, plasma, red blood cell (RBC), and tissue Se levels were measured concurrently with glutathione peroxidase (GPx) and superoxide dismutase (SOD) activities. The oxidative stress was assessed by thiobarbituric acid-reactive species (TBARs), total thiol groups, glutathione, and tocopherol measurements. Our study showed that Se depletion with alterations in the antioxidant defense system (Se and GPx activity decreases) led to an increase of lipid peroxidation, a decrease of the plasma vitamin E level, and SOD activation. Sodium selenite injection resulted after 24 h in an optimal plasma Se level and a reactivation of GPx activity. In liver, brain, and kidney, Se levels in injected animals were higher than those in reference animals. However, this single administration of Se failed to decrease free radical damage induced by Se depletion. Therefore, in burned patients who exhibit an altered Se status despite a daily usually restricted Se supplementation, the early administration of a consistent Se amount to improve the GPx activity should be of great interest in preventing the impairment of the antioxidant status.
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Affiliation(s)
- Diane Agay
- Centre de Recherches du Service de Santé des Armées, 24 Av. du Maquis du Grésivaudan, BP87, 38702 La Tronche cedex, France.
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Faure P, Ducros V, Couzy F, Favier A, Ferry M. Rapidly exchangeable pool study of zinc in free-living or institutionalized elderly women. Nutrition 2005; 21:831-7. [PMID: 15975491 DOI: 10.1016/j.nut.2004.12.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2004] [Accepted: 12/01/2004] [Indexed: 11/16/2022]
Abstract
OBJECTIVE We evaluated the effect of age and institutionalization on zinc metabolism by using a stable isotope technique. METHODS This was a randomized case-control study. Three groups were recruited: nine young women (group 1, ages 36+/-1 y) as controls, nine free-living elderly women (group 2, ages 72+/-2 y), and nine institutionalized women (group 3, ages 73+/-2 y). Only women were recruited to obtain homogeneous groups. The study was set in a Valence hospital (France) in the geriatric department (headed by Dr. Ferry). The experimental design of the study was reviewed and approved by the local ethical committee, and all participants signed a consent form. No subject dropped out of the study. A zinc stable isotope label (0.73 mg of (70)Zn) was injected intravenously into patients and measured by inductively coupled plasma mass spectrometry. RESULTS Decay curves of the plasma (70)Zn followed a one-compartment kinetic leading to the determination of one pool. The size of this pool suggested that it corresponded to the liver compartment. The size of this pool was significantly smaller in elderly people. (70)Zn plasma resident time was significantly longer in elderly individuals, and shorter in institutionalized than in free-living elderly subjects. CONCLUSION These data suggest that the zinc metabolism of elderly women is related to lifestyle or its consequences and to age. Moreover, we have demonstrated that kinetic studies using stable isotopes of zinc can provide novel information on exchangeable zinc pools in clinical situations.
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Affiliation(s)
- Patrice Faure
- Laboratoire HP2, Faculté de Médecine et de Pharmacie, BP 217, Grenoble, France.
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Rousseau AS, Robin S, Roussel AM, Ducros V, Margaritis I. Plasma homocysteine is related to folate intake but not training status. Nutr Metab Cardiovasc Dis 2005; 15:125-133. [PMID: 15871861 DOI: 10.1016/j.numecd.2005.02.002] [Citation(s) in RCA: 12] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2004] [Accepted: 02/11/2005] [Indexed: 11/17/2022]
Abstract
BACKGROUND AND AIM Lifestyle including intakes of several essential nutrients and physical activity are of particular interest in reducing plasma total homocysteine concentration (tHcy), a risk factor for cardiovascular diseases. The aim of this study was to determine in athletes, whether dietary factors such as intakes of folate, vitamin B6 and B12 were associated with lower plasma tHcy, and whether this depended on daily energy expenditure (EE) and type of physical activity performed (aerobic, anaerobic, intermittent). METHODS Seventy-four well-trained athletes completed 7-day food and activity records in a cross-sectional study. Blood was sampled on day 8. RESULTS Percentage of vegetal protein, vitamin B6, and folate intakes were higher and tHcy was lower (1) in athletes with high EE (> 16.72 MJ/d) compared to athletes with lower EE; (2) in aerobic athletes compared to intermittent athletes and sedentary subjects. After backward step by step analysis, folate intake was the only significant variable retained in the model to explain tHcy variability. Moreover, after introducing folate intake as a covariate in ANOVA tests, group effects on tHcy were no longer significant. Nutrient density of folate was inversely correlated to tHcy in athletes (r = -0.33; P = 0.004). CONCLUSION High energy intake (> 16.72 MJ/d) allows the necessary folate intake (> 500 microg/d) for tHcy decrease to occur, which is moreover favored by aerobic activity. The mechanism underlying low tHcy in relation to high EE could only play a minor role when compared to the effect of dietary folate intake on tHcy.
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Affiliation(s)
- A S Rousseau
- Laboratoire Nutrition, Vieillissement et Maladies Cardiovasculaires, UFR Pharmacie, UJF Grenoble, France
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Demuth K, Ducros V, Michelsohn S, Paul JL. Evaluation of Advia Centaur automated chemiluminescence immunoassay for determining total homocysteine in plasma. Clin Chim Acta 2005; 349:113-20. [PMID: 15469863 DOI: 10.1016/j.cccn.2004.06.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2004] [Revised: 06/09/2004] [Accepted: 06/10/2004] [Indexed: 11/30/2022]
Abstract
BACKGROUND A lot of methods are now available for total plasma homocysteine (tHcy) determination. HPLC with fluorescence detection were the most widely used methods until recently but immunoassays, easier to use, currently supplant in-house laboratory methods. METHODS The latest commercial automated chemiluminescence immunoassay (ICL) for tHcy, developed on the ADVIA Centaur analyzer (Bayer Diagnostics), was fully evaluated and compared with a current HPLC method. RESULTS The ICL-ADVIA Centaur method had a detection limit <0.9 micromol/l and was linear for tHcy between 2.4 and 58.8 micromol/l. The within- and between assay imprecision was <6% and <7%, respectively. The analytical recovery ranged from 93.5% to 109.7%. The comparison of 168 clinical plasma specimens indicated a good correlation between the two methods (r=0.96, p<0.0001) but a systematic positive bias for ICL-ADVIA Centaur method (mean difference=3.0 micromol/l). CONCLUSIONS The ADVIA Centaur method is a useful and practicable alternative to HPLC methods for tHcy determination. The ICL method is even more convenient than chromatographic methods for routine use because of its significantly higher throughput (200 samples/h vs. 40 per 24 h). However, the agreement among methods is insufficient to allow them to be used interchangeably.
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Affiliation(s)
- Karine Demuth
- Laboratoire de Biochimie Cardiovasculaire, Hôpital Européen Georges Pompidou, AP-HP, 75015 Paris, France.
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Ducros V, Arnaud J, Tahiri M, Coudray C, Bornet F, Bouteloup-Demange C, Brouns F, Rayssiguier Y, Roussel AM. Influence of Short-Chain Fructo-Oligosaccharides (sc-FOS) on Absorption of Cu, Zn, and Se in Healthy Postmenopausal Women. J Am Coll Nutr 2005; 24:30-7. [PMID: 15670982 DOI: 10.1080/07315724.2005.10719440] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [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: 10/26/2022]
Abstract
OBJECTIVE This study was carried out to evaluate the effect of short-chain fructooligosaccharides (sc-FOS) on the absorption of Cu, Zn, and Se among postmenopausal women who are potential candidates to subclinical trace element deficiencies. DESIGN A randomized double blind cross-over study. SETTING This study was carried out at the Human Nutrition Research Center, Clermont-Ferrand, France. SUBJECTS 11 postmenopausal women aged 53-70 y, not taking hormone replacement therapy were enrolled and completed the study. INTERVENTIONS Diets with 10 g/day sc-FOS or placebo were given for 5 weeks each in random order followed by a wash-out period of at least 3 weeks. At the end of each period, stable isotopes (3.19 mg 67Zn as ZnCl2, 2.06 mg 65Cu as CuCl2 and 52.3 microg 74Se as sodium selenite) and radiopaque pellets (as fecal excretion index) were administered during lunch. Stools were collected for the next 5-7 days. Isotopes were determined by ICP-MS (Cu and Zn) or GC-MS (Se). RESULTS Copper absorption was significantly enhanced (p = 0.042) by sc-FOS. No effect of sc-FOS was observed on Zn, and Se absorption. CONCLUSION To our knowledge, this is the first study on the influence of sc-FOS on trace element metabolism. The observed increase in copper absorption may be of interest regarding daily copper requirements in menopausal women. However, the relevance of this observation remains to be established.
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Affiliation(s)
- Véronique Ducros
- Laboratoire Nutrition, Vieillissement et Maladies Cardiovasculaires, Université Joseph Fourier, Domaine de la Merci, 38700 La Tronche, France.
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Rakotovao A, Tanguy S, Toufektsian MC, Berthonneche C, Ducros V, Tosaki A, de Leiris J, Boucher F. Selenium status as determinant of connexin-43 dephosphorylation in ex vivo ischemic/reperfused rat myocardium. J Trace Elem Med Biol 2005; 19:43-7. [PMID: 16240671 DOI: 10.1016/j.jtemb.2005.07.001] [Citation(s) in RCA: 18] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Recent studies have demonstrated that electrical uncoupling at gap junctions during ischemia is associated with cardiac Connexin-43 (Cx43) dephosphorylation. Whether oxidative stress is involved in this phenomenon still remains unclear. In the present study, we examined the influence of selenium intake on reperfusion-induced Cx43 dephosphorylation. Male Wistar rats were fed a diet containing either 0.05 mg/kg (Low-Se, n = 13) or 1.5 mg/kg (High-Se, n = 11) selenium for 8 weeks. At the end of this diet, hearts were isolated and subjected to 10 min regional ischemia followed by 10 min reperfusion. The level of dephosphorylated Cx43 was determined in tissue samples from ischemic/reperfused and non-ischemic regions of the hearts. At the end of the experiemental diet, the activity of the antioxidant enzyme glutathione peroxidase (GSH-Px) was increased in high-Se hearts compared with low-Se hearts (+ 13%; p < 0.05). After ischemia/reperfusion, in low-Se hearts, Cx43 dephosphorylation appeared significantly increased in the left ventricle compared to the non-ischemic right ventricle (+ 149%; p < 0.05). The high-Se diet significantly reduced Cx43 dephosphorylation in the left ventricle (p < 0.05 vs. low-Se diet). In conclusion, our results suggest that oxidative stress may be involved in Cx43 dephosphorylation during myocardial ischemia/reperfusion, thereby contributing to arrhythmogenesis.
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Affiliation(s)
- Andry Rakotovao
- Laboratoire NVMC-EA 3746, IFRT 130 Ingénierie pour le Vivant, Bâtiment Jean Roget-Domaine de la Merci, Université Joseph Fourier, 38700 La Tronche, France
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Tanguy S, Morel S, Berthonneche C, Toufektsian MC, de Lorgeril M, Ducros V, Tosaki A, de Leiris J, Boucher F. Preischemic selenium status as a major determinant of myocardial infarct size in vivo in rats. Antioxid Redox Signal 2004; 6:792-6. [PMID: 15242560 DOI: 10.1089/1523086041361631] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Prospective epidemiological studies have shown that the incidence of numerous cardiovascular pathologies is correlated with body selenium status. However, it remains unclear whether selenium status also influences the outcome of myocardial infarction. The aim of the present study was to test whether dietary selenium intake affects myocardial necrosis induced by transient regional ischemia in vivo in rats. For this purpose, male Wistar rats received either a high-selenium (High-Se: 1.5 mg of Se/kg) or a low-selenium (Low-Se: 0.05 mg of Se/kg) diet for 10 weeks. Animals were subjected to 30 min of myocardial ischemia induced by coronary artery ligation followed by 60 min of reperfusion. Pre- and postischemic blood samples were collected for glutathione (GSH and GSSG) determination and for glutathione peroxidase (GSH-Px) assessment. Our results show that high-selenium intake reduces myocardial infarct size (High-Se: 25.16 +/- 1.19% versus Low-Se: 36.51 +/- 4.14%, p < 0.05), preserves postischemic GSH/GSSG ratio (High-Se: 1.37 +/- 0.37 versus Low-Se: 0.47 +/- 0.10, p < 0.05), increases plasma GSH-Px activity, and improves postischemic mean arterial pressure. In conclusion, preischemic body selenium status is a major determinant of the outcome of myocardial ischemia in vivo in rats probably because it influences the cellular redox status.
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Steiman R, Ford L, Ducros V, Lafond JL, Guiraud P. First survey of fungi in hypersaline soil and water of Mono Lake area (California). Antonie Van Leeuwenhoek 2004; 85:69-83. [PMID: 15028878 DOI: 10.1023/b:anto.0000020150.91058.4d] [Citation(s) in RCA: 25] [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: 11/12/2022]
Abstract
Mono Lake is a closed lake located in central California, east of the Sierra Nevada mountains. It contains dissolved carbonates, sulfates and chlorides at high concentrations. Due to its high salinity, Mono Lake was sometimes compared to the Dead Sea. However, it appears that Mono Lake water and vicinity abound with life. In this work, the fungal flora living in this extreme ecosystem was studied for the first time. Soil, tufa, water and sediment samples were also analyzed for their mineral and salt composition. Results showed that water was particularly rich in sodium, potassium, phosphorus and boron. Soil and sediments contained very high levels of calcium and magnesium, but also barium, boron and strontium. Sodium, phosphorus and iron levels varied in a large extent from one to another sample. Neutral to very alkaline pH were recorded. Water samples were found sterile in the conditions chosen for fungi isolation, while sediment, soil and tufa samples led to the isolation of a total of 67 fungal species (from 23 samples), belonging to various taxonomic groups. From our results no clear effects of the chemical parameters of the samples were observed on fungal life apart from the pH. The methods chosen did not allow the isolation of extremely halotolerant species. We isolated in this work a series of ubiquitous species, suggesting that a selection of resistant and/or adaptable strains of some common species could have occurred. Depending on the medium and the temperature of isolation, it can be hypothesized that some species were present as dormant structures, while some others, isolated at pH 8 on a medium enriched in Na and Ca, could be in a growing form adapted to alkaline and saline conditions. This work contributes to a better knowledge of the mycobiota present in the Mono Lake's ecosystem.
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Affiliation(s)
- Régine Steiman
- Laboratoire ORSOX-UMR UJF/CEA-LRC CEA 8M, Université Joseph Fourier, UFR de Médecine et Pharmacie de Grenoble, 38706 La Tronche Cedex, France
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Sandre C, Agay D, Ducros V, Van Uye A, Cruz C, Chancerelle Y, Roussel AM. Early evolution of selenium status and oxidative stress parameters in rat models of thermal injury. J Trace Elem Med Biol 2004; 17:313-8. [PMID: 15139394 DOI: 10.1016/s0946-672x(04)80034-8] [Citation(s) in RCA: 15] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The objective of the present study was to measure the relationship between selenium status and oxidative stress in two rat models of thermal injury. A non-lethal third-degree burn injury involving 20% (experiment 1) or 40% (experiment 2) of total body surface area (TBSA) was applied to male Wistar rats. Selenium level, glutathione peroxidase (GPx) activity in plasma, red blood cells (RBC) and tissues (liver, kidney, muscle, and brain), and plasma selenoalbumin (Se-alb) were measured in control rats and in burned rats respectively 6 hours after injury and daily from day 1 to day 5. In parallel, lipid and protein oxidative damages, monitored by plasma and tissue thiobarbituric acid reactive species (TBARs) levels and plasma total thiol groups were assessed. We observed a decrease of plasma Se and Se-albumin 6 hours after burn injury. In parallel, plasma GPx activity rapidly decreased and remained significantly lower than in control rats. These alterations were enhanced by the burn injury severity. Plasma TBARs followed the same pattern as that of plasma cholesterol, with an initial decrease and an increase at day 3 in 40% TBSA burned rats. Plasma thiol groups decreased in the two experiments indicating plasma protein oxidation. These results confirm an early oxidative stress in burn injury, and suggest an early selenium mobilization, which might counteract this oxidative stress. These data underline the crucial need of a restored selenium status in burned patients immediately after the burn injury.
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Affiliation(s)
- Caroline Sandre
- Laboratoire de Biologie du Stress Oxydant, Faculté de Pharmacie, La Tronche, France
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