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Kahouadji S, Giguère Y, Lambert S, Forest JC, Bernard N, Blanchon L, Marceau G, Durif J, Pereira B, Gallot D, Sapin V, Bouvier D. CX3CL1/Fractalkine as a biomarker for early pregnancy prediction of preterm premature rupture of membranes. Clin Chem Lab Med 2024; 62:1101-1108. [PMID: 38278625 PMCID: PMC11056942 DOI: 10.1515/cclm-2023-1202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/13/2024] [Indexed: 01/28/2024]
Abstract
OBJECTIVES The objective of our study was to evaluate serum CX3CL1/Fractalkine, a monocyte/macrophage chemoattractant expressed in cytotrophoblasts and decidual cells, as a predictive biomarker for the occurrence of preterm premature rupture of membranes (PPROM). METHODS A case-control study of 438 pregnancies including 82 PPROM cases and 64 preterm labor with intact membranes cases with blood samples collected at first trimester, second trimester and delivery was conducted. The predictive ability of CX3CL1 and maternal risk factors for the occurrence of PPROM was assessed by receiver operating characteristic curve analysis. A second, independent cohort was prospectively constituted to confirm the case-control study results. RESULTS First trimester CX3CL1 was significantly increased in PPROM cases when compared to matched controls. Multivariate regression analysis highlighted a significant difference for CX3CL1 measured during the first trimester (p<0.001). Alone, CX3CL1 predicts PPROM with a 90 % sensitivity and a specificity around 40 %. The area under the receiver operating characteristic curve for PPROM prediction were 0.64 (95% confidence interval: 0.57-0.71) for first trimester CX3CL1, and 0.61 (95% confidence interval: 0.54-0.68) for maternal risk factors (body mass index<18.5 kg/m2, nulliparity, tobacco use and the absence of high school diploma). The combination of CX3CL1 and maternal risk factors significantly improved the area under the curve: 0.72 (95% confidence interval: 0.66-0.79) (p<0.001). The results were confirmed on a second independent cohort. CONCLUSIONS CX3CL1 is a promising blood biomarker in the early (first trimester) prediction of PPROM.
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Affiliation(s)
- Samy Kahouadji
- Biochemistry and Molecular Genetic Department, CHU Clermont-Ferrand, Clermont-Ferrand, France
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Yves Giguère
- Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Québec City, Canada
- Faculty of Medicine, Department of Molecular Biology, Medical Biochemistry and Pathology, Université Laval, Québec City, Canada
| | - Salomé Lambert
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Jean-Claude Forest
- Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Québec City, Canada
- Faculty of Medicine, Department of Molecular Biology, Medical Biochemistry and Pathology, Université Laval, Québec City, Canada
| | - Nathalie Bernard
- Centre de Recherche du Centre Hospitalier Universitaire (CHU) de Québec-Université Laval, Québec City, Canada
| | - Loïc Blanchon
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Geoffroy Marceau
- Biochemistry and Molecular Genetic Department, CHU Clermont-Ferrand, Clermont-Ferrand, France
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Julie Durif
- Biochemistry and Molecular Genetic Department, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Bruno Pereira
- Biostatistics Unit (DRCI), CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Denis Gallot
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
- Department of Obstetrics and Gynecology, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Vincent Sapin
- Biochemistry and Molecular Genetic Department, CHU Clermont-Ferrand, Clermont-Ferrand, France
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
| | - Damien Bouvier
- Biochemistry and Molecular Genetic Department, CHU Clermont-Ferrand, Clermont-Ferrand, France
- Faculty of Medicine, CNRS 6293, INSERM 1103, GReD, Université Clermont Auvergne, Clermont-Ferrand, France
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Coste K, Bruet S, Chollat-Namy C, Filhol O, Cochet C, Gallot D, Marceau G, Blanchon L, Sapin V, Belville C. Characterization of RAGE and CK2 Expressions in Human Fetal Membranes. Int J Mol Sci 2023; 24:ijms24044074. [PMID: 36835482 PMCID: PMC9966553 DOI: 10.3390/ijms24044074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/07/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
At the feto-maternal interface, fetal membranes (FM) play a crucial role throughout pregnancy. FM rupture at term implicates different sterile inflammation mechanisms including pathways activated by the transmembrane glycoprotein receptor for advanced glycation end-products (RAGE) belonging to the immunoglobulin superfamily. As the protein kinase CK2 is also implicated in the inflammation process, we aimed to characterize the expressions of RAGE and the protein kinase CK2 as a candidate regulator of RAGE expression. The amnion and choriodecidua were collected from FM explants and/or primary amniotic epithelial cells throughout pregnancy and at term in spontaneous labor (TIL) or term without labor (TNL). The mRNA and protein expressions of RAGE and the CK2α, CK2α', and CK2β subunits were investigated using reverse transcription quantitative polymerase chain reaction and Western blot assays. Their cellular localizations were determined with microscopic analyses, and the CK2 activity level was measured. RAGE and the CK2α, CK2α', and CK2β subunits were expressed in both FM layers throughout pregnancy. At term, RAGE was overexpressed in the amnion from the TNL samples, whereas the CK2 subunits were expressed at the same level in the different groups (amnion/choriodecidua/amniocytes, TIL/TNL), without modification of the CK2 activity level and immunolocalization. This work paves the way for future experiments regarding the regulation of RAGE expression by CK2 phosphorylation.
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Affiliation(s)
- Karen Coste
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- CHU Clermont-Ferrand, Neonatal Intensive Care Department, F-63000 Clermont-Ferrand, France
| | - Shaam Bruet
- CHU Clermont-Ferrand, Neonatal Intensive Care Department, F-63000 Clermont-Ferrand, France
| | - Caroline Chollat-Namy
- CHU Clermont-Ferrand, Neonatal Intensive Care Department, F-63000 Clermont-Ferrand, France
| | - Odile Filhol
- INSERM, CEA, UMR Biosanté, U1292, University Grenoble Alpes, F-38000 Grenoble, France
| | - Claude Cochet
- INSERM, CEA, UMR Biosanté, U1292, University Grenoble Alpes, F-38000 Grenoble, France
| | - Denis Gallot
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- CHU Clermont-Ferrand, Obstetrics and Gynecology Department, F-63000 Clermont-Ferrand, France
| | - Geoffroy Marceau
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- CHU Clermont-Ferrand, Biochemistry and Molecular Genetic Department, F-63000 Clermont-Ferrand, France
| | - Loïc Blanchon
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
| | - Vincent Sapin
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- CHU Clermont-Ferrand, Biochemistry and Molecular Genetic Department, F-63000 Clermont-Ferrand, France
| | - Corinne Belville
- iGReD, Team “Translational Approach to Epithelial Injury and Repair”, UMR6293 CNRS-U1103 INSERM, Université Clermont Auvergne, F-63000 Clermont-Ferrand, France
- Correspondence: ; Tel.: +33-4-7317-8174
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Eychenne J, Gurioli L, Damby D, Belville C, Schiavi F, Marceau G, Szczepaniak C, Blavignac C, Laumonier M, Gardés E, Le Pennec J, Nedelec J, Blanchon L, Sapin V. Spatial Distribution and Physicochemical Properties of Respirable Volcanic Ash From the 16-17 August 2006 Tungurahua Eruption (Ecuador), and Alveolar Epithelium Response In-Vitro. Geohealth 2022; 6:e2022GH000680. [PMID: 36545343 PMCID: PMC9758688 DOI: 10.1029/2022gh000680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/12/2022] [Accepted: 09/15/2022] [Indexed: 06/17/2023]
Abstract
Tungurahua volcano (Ecuador) intermittently emitted ash between 1999 and 2016, enduringly affecting the surrounding rural area and its population, but its health impact remains poorly documented. We aim to assess the respiratory health hazard posed by the 16-17 August 2006 most intense eruptive phase of Tungurahua. We mapped the spatial distribution of the health-relevant ash size fractions produced by the eruption in the area impacted by ash fallout. We quantified the mineralogy, composition, surface texture, and morphology of a respirable ash sample isolated by aerodynamic separation. We then assessed the cytotoxicity and pro-inflammatory potential of this respirable ash toward lung tissues in-vitro using A549 alveolar epithelial cells, by electron microscopy and biochemical assays. The eruption produced a high amount of inhalable and respirable ash (12.0-0.04 kg/m2 of sub-10 μm and 5.3-0.02 kg/m2 of sub-4 μm ash deposited). Their abundance and proportion vary greatly across the deposit within the first 20 km from the volcano. The respirable ash is characteristic of an andesitic magma and no crystalline silica is detected. Morphological features and surface textures are complex and highly variable, with few fibers observed. In-vitro experiments show that respirable volcanic ash is internalized by A549 cells and processed in the endosomal pathway, causing little cell damage, but resulting in changes in cell morphology and membrane texture. The ash triggers a weak pro-inflammatory response. These data provide the first understanding of the respirable ash hazard near Tungurahua and the extent to which it varies spatially in a fallout deposit.
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Affiliation(s)
- Julia Eychenne
- Université Clermont AuvergneCNRSIRDOPGCLaboratoire Magmas et VolcansClermont‐FerrandFrance
- Université Clermont AuvergneCNRSINSERMInstitut de Génétique Reproduction et DéveloppementClermont‐FerrandFrance
| | - Lucia Gurioli
- Université Clermont AuvergneCNRSIRDOPGCLaboratoire Magmas et VolcansClermont‐FerrandFrance
| | - David Damby
- U.S. Geological SurveyCalifornia Volcano ObservatoryMoffett FieldCAUSA
| | - Corinne Belville
- Université Clermont AuvergneCNRSINSERMInstitut de Génétique Reproduction et DéveloppementClermont‐FerrandFrance
| | - Federica Schiavi
- Université Clermont AuvergneCNRSIRDOPGCLaboratoire Magmas et VolcansClermont‐FerrandFrance
| | - Geoffroy Marceau
- Université Clermont AuvergneCNRSINSERMInstitut de Génétique Reproduction et DéveloppementClermont‐FerrandFrance
- Biochemistry and Molecular Genetic DepartmentUniversity HospitalClermont‐FerrandFrance
| | - Claire Szczepaniak
- Université Clermont AuvergneUCA PARTNERCentre Imagerie Cellulaire SantéClermont‐FerrandFrance
| | - Christelle Blavignac
- Université Clermont AuvergneUCA PARTNERCentre Imagerie Cellulaire SantéClermont‐FerrandFrance
| | - Mickael Laumonier
- Université Clermont AuvergneCNRSIRDOPGCLaboratoire Magmas et VolcansClermont‐FerrandFrance
| | - Emmanuel Gardés
- Université Clermont AuvergneCNRSIRDOPGCLaboratoire Magmas et VolcansClermont‐FerrandFrance
| | - Jean‐Luc Le Pennec
- Geo‐OceanCNRSIfremerUMR6538PlouzanéFrance
- IRD Office for Indonesia & Timor LesteJalan Kemang RayaJakartaIndonesia
| | - Jean‐Marie Nedelec
- Université Clermont AuvergneClermont Auvergne INPCNRSICCFClermont‐FerrandFrance
| | - Loïc Blanchon
- Université Clermont AuvergneCNRSINSERMInstitut de Génétique Reproduction et DéveloppementClermont‐FerrandFrance
| | - Vincent Sapin
- Université Clermont AuvergneCNRSINSERMInstitut de Génétique Reproduction et DéveloppementClermont‐FerrandFrance
- Biochemistry and Molecular Genetic DepartmentUniversity HospitalClermont‐FerrandFrance
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Chavanelle V, Otero YF, Le Joubioux F, Ripoche D, Bargetto M, Vluggens A, Montaurier C, Pickering G, Ducheix G, Dubray C, Dualé C, Boulliau S, Macian N, Marceau G, Sapin V, Dutheil F, Guigas B, Maugard T, Boisseau N, Cazaubiel M, Peltier SL, Sirvent P. Effects of Totum-63 on glucose homeostasis and postprandial glycemia: a translational study. Am J Physiol Endocrinol Metab 2021; 320:E1119-E1137. [PMID: 33938234 PMCID: PMC8285600 DOI: 10.1152/ajpendo.00629.2020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Global prevalence of type 2 diabetes (T2D) is rising and may affect 700 million people by 2045. Totum-63 is a polyphenol-rich natural composition developed to reduce the risk of T2D. We first investigated the effects of Totum-63 supplementation in high-fat diet (HFD)-fed mice for up to 16 wk and thereafter assessed its safety and efficacy (2.5 g or 5 g per day) in 14 overweight men [mean age 51.5 yr, body mass index (BMI) 27.6 kg·m-2] for 4 wk. In HFD-fed mice, Totum-63 reduced body weight and fat mass gain, whereas lean mass was unchanged. Moreover, fecal energy excretion was higher in Totum-63-supplemented mice, suggesting a reduction of calorie absorption in the digestive tract. In the gut, metagenomic analyses of fecal microbiota revealed a partial restoration of HFD-induced microbial imbalance, as shown by principal coordinate analysis of microbiota composition. HFD-induced increase in HOMA-IR score was delayed in supplemented mice, and insulin response to an oral glucose tolerance test was significantly reduced, suggesting that Totum-63 may prevent HFD-related impairments in glucose homeostasis. Interestingly, these improvements could be linked to restored insulin signaling in subcutaneous adipose tissue and soleus muscle. In the liver, HFD-induced steatosis was reduced by 40% (as shown by triglyceride content). In the subsequent study in men, Totum-63 (5 g·day-1) improved glucose and insulin responses to a high-carbohydrate breakfast test (84% kcal carbohydrates). It was well tolerated, with no clinically significant adverse events reported. Collectively, these data suggest that Totum-63 could improve glucose homeostasis in both HFD-fed mice and overweight individuals, presumably through a multitargeted action on different metabolic organs.NEW & NOTEWORTHY Totum-63 is a novel polyphenol-rich natural composition developed to reduce the risk of T2D. Totum-63 showed beneficial effects on glucose homeostasis in HFD-fed mice, presumably through a multitargeted action on different metabolic organs. Totum-63 was well tolerated in humans and improved postprandial glucose and insulin responses to a high-carbohydrate breakfast test.
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Affiliation(s)
| | | | | | | | | | | | | | - Gisèle Pickering
- CHU Clermont-Ferrand, Centre d'Investigation Clinique, Clermont-Ferrand, France
- INSERM, Clermont-Ferrand, France
| | - Gilles Ducheix
- CHU Clermont-Ferrand, Centre d'Investigation Clinique, Clermont-Ferrand, France
- INSERM, Clermont-Ferrand, France
| | - Claude Dubray
- CHU Clermont-Ferrand, Centre d'Investigation Clinique, Clermont-Ferrand, France
- INSERM, Clermont-Ferrand, France
| | - Christian Dualé
- CHU Clermont-Ferrand, Centre d'Investigation Clinique, Clermont-Ferrand, France
- INSERM, Clermont-Ferrand, France
| | - Sylvia Boulliau
- CHU Clermont-Ferrand, Centre d'Investigation Clinique, Clermont-Ferrand, France
- INSERM, Clermont-Ferrand, France
| | - Nicolas Macian
- CHU Clermont-Ferrand, Centre d'Investigation Clinique, Clermont-Ferrand, France
- INSERM, Clermont-Ferrand, France
| | - Geoffroy Marceau
- Biochemistry and Molecular Genetics Department, University Hospital, Clermont-Ferrand, France
| | - Vincent Sapin
- Biochemistry and Molecular Genetics Department, University Hospital, Clermont-Ferrand, France
| | - Frédéric Dutheil
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, CHU Clermont-Ferrand, University Hospital of Clermont-Ferrand, Preventive and Occupational Medicine, Clermont-Ferrand, France
| | - Bruno Guigas
- Department of Parasitology, Leiden University Medical Center, Leiden, The Netherlands
| | - Thierry Maugard
- La Rochelle Université - LIENSs UMR CNRS 7266, La Rochelle, France
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Corriger A, Duclos M, Corcuff JB, Lambert C, Marceau G, Sapin V, Macian N, Roux D, Pereira B, Pickering G. Hormonal Status and Cognitivo-Emotional Profile in Real-Life Patients With Neuropathic Pain: A Case Control Study. Pain Pract 2019; 19:703-714. [PMID: 31127700 DOI: 10.1111/papr.12800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 05/17/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND The specific impact of neuropathic pain and recommended neuropathic pain treatments on the hormonal and immune status of patients has been so far poorly explored. This study aimed at studying, in real life, the hypothalamic-pituitary-adrenal axis and the cytokine profile of patients with neuropathic pain. It also explored their links with cognition, emotion, quality of life, and drug treatment. METHODS This prospective study (clinicaltrials.gov NCT01543425) included 60 patients with neuropathic pain and 60 age- and gender-matched healthy volunteers after obtaining signatures of informed consent. A number of parameters were measured: adrenocorticotropic hormone, cortisol, cortisol awakening response, dehydroepiandrosterone sulphate, sex hormone binding globulin, testosterone, 17-β-estradiol, progesterone, luteinizing hormone, follicle-stimulating hormone, cytokines, brain-derived neurotrophic factor, and vitamin D. Psychological parameters were assessed by questionnaires. RESULTS Patients with neuropathic pain had lower levels of adrenocorticotropic hormone (P = 0.009) and dehydroepiandrosterone sulphate (P < 0.001) than controls, and the cortisol awakening response was impaired. Patients were more depressed and anxious (P < 0.001) and had a diminished quality of life (P < 0.001), which was influenced by cytokines (P = 0.0067) and testosterone (P = 0.028). Antidepressants and antiepileptics appeared to interfere with testosterone and cognitivo-emotional domains. CONCLUSION An impairment of the hormonal status and of the immune system was observed in patients. It identified testosterone as a potential pivotal mediator between antidepressants/antiepileptics and quality of life. Further studies must address the exact impact of different types of drugs on central effects, of gender differences, and of the immune system of neuropathic pain.
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Affiliation(s)
- Alexandrine Corriger
- Laboratoire Neuro-Dol Inserm 1107, University Clermont Auvergne, Clermont-Ferrand, France
| | - Martine Duclos
- Sports Medicine Department, University Hospital, CHU, INRA UMR 1019, UNH, CRNH, Clermont-Ferrand, France
| | - Jean-Benoit Corcuff
- Hormone Laboratory, Nuclear Medicine, CHU Bordeaux UMR INRA 1286 - University Bordeaux, Bordeaux, France
| | - Céline Lambert
- Biostatistics Unit (DRCI), University Hospital Clermont-Ferrand, Clermont-Ferrand, France
| | - Geoffroy Marceau
- Biochemistry Department, University Hospital CHU, Clermont-Ferrand, France
| | - Vincent Sapin
- Biochemistry Department, University Hospital CHU, Clermont-Ferrand, France
| | - Nicolas Macian
- Clinical Pharmacology Department, CPC/CIC Inserm 1405, University Hospital CHU, Clermont-Ferrand, France
| | - Delphine Roux
- Clinical Pharmacology Department, CPC/CIC Inserm 1405, University Hospital CHU, Clermont-Ferrand, France
| | - Bruno Pereira
- Biostatistics Unit (DRCI), University Hospital Clermont-Ferrand, Clermont-Ferrand, France
| | - Gisèle Pickering
- Laboratoire Neuro-Dol Inserm 1107, University Clermont Auvergne, Clermont-Ferrand, France.,Clinical Pharmacology Department, CPC/CIC Inserm 1405, University Hospital CHU, Clermont-Ferrand, France
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Zabaiou N, Fouache A, Trousson A, Buñay-Noboa J, Marceau G, Sapin V, Zellagui A, Baron S, Lahouel M, Lobaccaro JMA. Ethanolic extract of Algerian propolis decreases androgen receptor transcriptional activity in cultured LNCaP cells. J Steroid Biochem Mol Biol 2019; 189:108-115. [PMID: 30831197 DOI: 10.1016/j.jsbmb.2019.02.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 02/08/2019] [Accepted: 02/27/2019] [Indexed: 01/01/2023]
Abstract
Antiandrogens have a peculiar place in the treatment of metastatic prostate cancer by blocking the androgen receptor (AR). Unfortunately, aggressive tumors could rapidly develop into a castration resistant state. It is therefore essential to look for new molecules that are more effective, affecting not only the androgen signaling and with minimum undesirable effects. Natural products are an interesting source of new therapeutics, especially for cancer therapy as 70% of them have botanical origin. Based on an ethnobotany screening, we evaluated the effects of ethanolic extract of propolis (EEP) from Algeria on LNCaP cells. Results pointed out that EEP reduces the survival of LNCaP cells with an IC50 of 0.04 mg/ml, induces the apoptosis and blocks the cell cycle at G0/G1 phase. Interestingly, EEP decreased the accumulation of AR suggesting some anti-androgen activity. Indeed, secreted amount of the androgen target protein PSA was decreased when LNCaP cells were incubated with EEP, starting after 4 h of treatment. This anti-androgen activity was also shown on the androgen target genes Fkbp5 and Sgk1. Finally, the capacity of EEP to block AR functioning was demonstrated in transient transfections with human AR and the reporter gene ARE-tk-Luc. Propolis antagonizes the induction of the luciferase activity induced by the natural androgen DHT (10-8M) or the synthetic AR agonist R1881 (10-7M). Altogether, these results highlight the potential pharmacological effects of EEP in future treatments of prostate cancer.
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Affiliation(s)
- Nada Zabaiou
- Université Clermont Auvergne, GReD, CNRS UMR 6293, INSERM U1103, 28, place Henri Dunant, BP38, F63001, Clermont-Ferrand, France; Centre de Recherche en Nutrition Humaine d'Auvergne, 58 Boulevard Montalembert, F-63009, Clermont-Ferrand, France; Laboratory of Molecular Toxicology, Department of Molecular and Cellular Biology, Faculty of Science, Université Mohamed Seddik Benyahia, 18000, Jijel, Algeria.
| | - Allan Fouache
- Université Clermont Auvergne, GReD, CNRS UMR 6293, INSERM U1103, 28, place Henri Dunant, BP38, F63001, Clermont-Ferrand, France; Centre de Recherche en Nutrition Humaine d'Auvergne, 58 Boulevard Montalembert, F-63009, Clermont-Ferrand, France.
| | - Amalia Trousson
- Université Clermont Auvergne, GReD, CNRS UMR 6293, INSERM U1103, 28, place Henri Dunant, BP38, F63001, Clermont-Ferrand, France; Centre de Recherche en Nutrition Humaine d'Auvergne, 58 Boulevard Montalembert, F-63009, Clermont-Ferrand, France.
| | - Julio Buñay-Noboa
- Université Clermont Auvergne, GReD, CNRS UMR 6293, INSERM U1103, 28, place Henri Dunant, BP38, F63001, Clermont-Ferrand, France; Centre de Recherche en Nutrition Humaine d'Auvergne, 58 Boulevard Montalembert, F-63009, Clermont-Ferrand, France.
| | - Geoffroy Marceau
- Université Clermont Auvergne, GReD, CNRS UMR 6293, INSERM U1103, 28, place Henri Dunant, BP38, F63001, Clermont-Ferrand, France; Service de Biochimie et Génétique Moléculaire, CHU Clermont-Ferrand, 63000, Clermont-Ferrand, France.
| | - Vincent Sapin
- Université Clermont Auvergne, GReD, CNRS UMR 6293, INSERM U1103, 28, place Henri Dunant, BP38, F63001, Clermont-Ferrand, France; Service de Biochimie et Génétique Moléculaire, CHU Clermont-Ferrand, 63000, Clermont-Ferrand, France.
| | - Amar Zellagui
- Laboratory of Biomolecules and Plant Breeding, Université Larbi Ben M'hidi, 04000, Oum El Bouaghi, Algeria.
| | - Silvère Baron
- Université Clermont Auvergne, GReD, CNRS UMR 6293, INSERM U1103, 28, place Henri Dunant, BP38, F63001, Clermont-Ferrand, France; Centre de Recherche en Nutrition Humaine d'Auvergne, 58 Boulevard Montalembert, F-63009, Clermont-Ferrand, France.
| | - Mesbah Lahouel
- Laboratory of Molecular Toxicology, Department of Molecular and Cellular Biology, Faculty of Science, Université Mohamed Seddik Benyahia, 18000, Jijel, Algeria.
| | - Jean-Marc A Lobaccaro
- Université Clermont Auvergne, GReD, CNRS UMR 6293, INSERM U1103, 28, place Henri Dunant, BP38, F63001, Clermont-Ferrand, France; Centre de Recherche en Nutrition Humaine d'Auvergne, 58 Boulevard Montalembert, F-63009, Clermont-Ferrand, France.
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Goncalves-Mendes N, Talvas J, Dualé C, Guttmann A, Corbin V, Marceau G, Sapin V, Brachet P, Evrard B, Laurichesse H, Vasson MP. Impact of Vitamin D Supplementation on Influenza Vaccine Response and Immune Functions in Deficient Elderly Persons: A Randomized Placebo-Controlled Trial. Front Immunol 2019; 10:65. [PMID: 30800121 PMCID: PMC6375825 DOI: 10.3389/fimmu.2019.00065] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 01/11/2019] [Indexed: 12/14/2022] Open
Abstract
Background: Immunosenescence contributes to reduced vaccine response in elderly persons, and is worsened by deficiencies in nutrients such as Vitamin (Vit-D). The immune system is a well-known target of Vit-D, which can both potentiate the innate immune response and inhibit the adaptive system, and so modulate vaccination response. Objective: This randomized placebo-controlled double-blind trial investigated whether Vit-D supplementation in deficient elderly persons could improve influenza seroprotection and immune response. Design: Deficient volunteers (Vit-D serum <30 ng/mL) were assigned (V1) to receive either 100,000 IU/15 days of cholecalciferol (D, n = 19), or a placebo (P, n = 19), over a 3 month period. Influenza vaccination was performed at the end of this period (V2), and the vaccine response was evaluated 28 days later (V3). At each visit, serum cathelicidin, immune response to vaccination, plasma cytokines, lymphocyte phenotyping, and phagocyte ROS production were assessed. Results: Levels of serum 25-(OH)D increased after supplementation (D group, V1 vs. V2: 20.7 ± 5.7 vs. 44.3 ± 8.6 ng/mL, p < 0.001). No difference was observed for serum cathelicidin levels, antibody titers, and ROS production in D vs. P groups at V3. Lower plasma levels of TNFα (p = 0.040) and IL-6 (p = 0.046), and higher ones for TFGβ (p = 0.0028) were observed at V3. The Th1/Th2 ratio was lower in the D group at V2 (D: 0.12 ± 0.05 vs. P: 0.18 ± 0.05, p = 0.039). Conclusions: Vit-D supplementation promotes a higher TGFβ plasma level in response to influenza vaccination without improving antibody production. This supplementation seems to direct the lymphocyte polarization toward a tolerogenic immune response. A deeper characterization of metabolic and molecular pathways of these observations will aid in the understanding of Vit-D's effects on cell-mediated immunity in aging. This clinical trial was registered at clinicaltrials.gov as NCT01893385.
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Affiliation(s)
| | - Jérémie Talvas
- University of Clermont Auvergne, INRA, UMR 1019 Human Nutrition Unit, Clermont-Ferrand, France
| | - Christian Dualé
- CHU Clermont-Ferrand, INSERM CIC 1405, University of Clermont Auvergne, Clermont-Ferrand, France
| | - Aline Guttmann
- CHU Clermont-Ferrand, Biostatistics Unit, University of Clermont Auvergne, Clermont-Ferrand, France
| | - Violaine Corbin
- CHU Clermont-Ferrand, Infectious Diseases Department, University of Clermont Auvergne, Clermont-Ferrand, France
| | - Geoffroy Marceau
- CHU Clermont-Ferrand, Biochemistry and Molecular Biology Department, University of Clermont Auvergne, Clermont-Ferrand, France
| | - Vincent Sapin
- CHU Clermont-Ferrand, Biochemistry and Molecular Biology Department, University of Clermont Auvergne, Clermont-Ferrand, France
| | - Patrick Brachet
- University of Clermont Auvergne, INRA, UMR 1019 Human Nutrition Unit, Clermont-Ferrand, France
| | - Bertrand Evrard
- University of Clermont Auvergne, INRA, UMR 1019 Human Nutrition Unit, Clermont-Ferrand, France.,CHU Clermont-Ferrand, Immunology Department, University of Clermont Auvergne, Clermont-Ferrand, France
| | - Henri Laurichesse
- University of Clermont Auvergne, INRA, UMR 1019 Human Nutrition Unit, Clermont-Ferrand, France.,CHU Clermont-Ferrand, Infectious Diseases Department, University of Clermont Auvergne, Clermont-Ferrand, France
| | - Marie-Paule Vasson
- University of Clermont Auvergne, INRA, UMR 1019 Human Nutrition Unit, Clermont-Ferrand, France.,CHU Clermont-Ferrand, Nutrition Unit, University of Clermont Auvergne, Clermont-Ferrand, France.,Centre Jean Perrin, Nutrition Unit, Clermont-Ferrand, France
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Delabaere A, Blanchon L, Coste K, Clairefond G, Belville C, Blanc P, Marceau G, Sapin V, Gallot D. Retinoic acid and tracheal occlusion for diaphragmatic hernia treatment in rabbit fetuses. Prenat Diagn 2018; 38:482-492. [DOI: 10.1002/pd.5256] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 02/06/2018] [Accepted: 03/14/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Amélie Delabaere
- “Translational approach to epithelial injury and repair” team, Université Clermont Auvergne, CNRS, Inserm, GReD; 63000 Clermont-Ferrand France
- Fetal Maternal Medicine Unit, Obstetrics and Gynecology Department; Clermont-Ferrand University Hospital; 63000 Clermont-Ferrand France
| | - Loïc Blanchon
- “Translational approach to epithelial injury and repair” team, Université Clermont Auvergne, CNRS, Inserm, GReD; 63000 Clermont-Ferrand France
| | - Karen Coste
- “Translational approach to epithelial injury and repair” team, Université Clermont Auvergne, CNRS, Inserm, GReD; 63000 Clermont-Ferrand France
- Department of Pediatrics; Clermont-Ferrand University Hospital; 63000 Clermont-Ferrand France
| | - Gael Clairefond
- “Translational approach to epithelial injury and repair” team, Université Clermont Auvergne, CNRS, Inserm, GReD; 63000 Clermont-Ferrand France
| | - Corinne Belville
- “Translational approach to epithelial injury and repair” team, Université Clermont Auvergne, CNRS, Inserm, GReD; 63000 Clermont-Ferrand France
| | - Pierre Blanc
- “Translational approach to epithelial injury and repair” team, Université Clermont Auvergne, CNRS, Inserm, GReD; 63000 Clermont-Ferrand France
- EA7281-“Translational approach to epithelial injury and repair”; Auvergne University; 63000 Clermont-Ferrand France
| | - Geoffroy Marceau
- “Translational approach to epithelial injury and repair” team, Université Clermont Auvergne, CNRS, Inserm, GReD; 63000 Clermont-Ferrand France
- Department of Biochemistry and Molecular Biology; Clermont-Ferrand University Hospital; 63000 Clermont-Ferrand France
| | - Vincent Sapin
- “Translational approach to epithelial injury and repair” team, Université Clermont Auvergne, CNRS, Inserm, GReD; 63000 Clermont-Ferrand France
- Department of Biochemistry and Molecular Biology; Clermont-Ferrand University Hospital; 63000 Clermont-Ferrand France
| | - Denis Gallot
- “Translational approach to epithelial injury and repair” team, Université Clermont Auvergne, CNRS, Inserm, GReD; 63000 Clermont-Ferrand France
- Fetal Maternal Medicine Unit, Obstetrics and Gynecology Department; Clermont-Ferrand University Hospital; 63000 Clermont-Ferrand France
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Delabaere A, Marceau G, Coste K, Blanchon L, Déchelotte PJ, Blanc P, Sapin V, Gallot D. Effects of tracheal occlusion with retinoic acid administration on normal lung development. Prenat Diagn 2017; 37:427-434. [DOI: 10.1002/pd.5012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 01/09/2017] [Accepted: 01/29/2017] [Indexed: 12/24/2022]
Affiliation(s)
- Amélie Delabaere
- EA7281 - Retinoids, Reproduction Developmental Diseases; Auvergne University; Clermont-Ferrand France
- Fetal Maternal Medicine Unit, Obstetrics and Gynecology Department; Clermont-Ferrand University Hospital; Clermont-Ferrand France
| | - Geoffroy Marceau
- EA7281 - Retinoids, Reproduction Developmental Diseases; Auvergne University; Clermont-Ferrand France
- Biochemistry and Molecular Biology Department; Clermont-Ferrand University Hospital; Clermont-Ferrand France
| | - Karen Coste
- EA7281 - Retinoids, Reproduction Developmental Diseases; Auvergne University; Clermont-Ferrand France
- Department of Paediatrics; Clermont-Ferrand University Hospital; Clermont-Ferrand France
| | - Loïc Blanchon
- EA7281 - Retinoids, Reproduction Developmental Diseases; Auvergne University; Clermont-Ferrand France
| | | | - Pierre Blanc
- EA7281 - Retinoids, Reproduction Developmental Diseases; Auvergne University; Clermont-Ferrand France
| | - Vincent Sapin
- EA7281 - Retinoids, Reproduction Developmental Diseases; Auvergne University; Clermont-Ferrand France
- Biochemistry and Molecular Biology Department; Clermont-Ferrand University Hospital; Clermont-Ferrand France
| | - Denis Gallot
- EA7281 - Retinoids, Reproduction Developmental Diseases; Auvergne University; Clermont-Ferrand France
- Fetal Maternal Medicine Unit, Obstetrics and Gynecology Department; Clermont-Ferrand University Hospital; Clermont-Ferrand France
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10
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Prat C, Belville C, Comptour A, Marceau G, Clairefond G, Chiambaretta F, Sapin V, Blanchon L. Myocilin expression is regulated by retinoic acid in the trabecular meshwork-derived cellular environment. Exp Eye Res 2017; 155:91-98. [PMID: 28153738 DOI: 10.1016/j.exer.2017.01.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 09/04/2016] [Revised: 01/17/2017] [Accepted: 01/25/2017] [Indexed: 12/15/2022]
Abstract
Glaucoma is the leading cause of irreversible blindness and is usually classified as angle closure and open angle glaucoma (OAG). Primary open angle glaucoma represents the most frequent clinical presentation leading to ganglion cell death and optic nerve degeneration as a main consequence of an intraocular pressure' (IOP) increase. The mechanisms of this IOP increase in such pathology remain unclear but one protein called Myocilin could be a part of the puzzle in the trabecular meshwork (TM). Previously described to be transcriptionally regulated by glucocorticoids, the comprehension of the trabecular regulation of Myocilin' expression has only weakly progressed since 15 years. Due to the essential molecular and cellular implications of retinoids' pathway in eye development and physiology, we investigate the potential role of the retinoic acid in such regulation and expression. This study demonstrates that the global retinoids signaling machinery is present in immortalized TM cells and that Myocilin (MYOC) expression is upregulated by retinoic acid alone or combined with a glucocorticoid co-treatment. This regulation by retinoic acid acts through the MYOC promoter which contains a critical cluster of four retinoic acid responsive elements (RAREs), with the RARE-DR2 presenting the strongest effect and binding the RARα/RXRα heterodimer. All together, these results open up new perspectives for the molecular understanding glaucoma pathophysiology and provide further actionable clues on Myocilin gene regulation.
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Affiliation(s)
- Cécile Prat
- EA7281 - Retinoids, Reproduction Developmental Diseases, School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France.
| | - Corinne Belville
- EA7281 - Retinoids, Reproduction Developmental Diseases, School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; GReD, CNRS UMR6293-Clermont Université-INSERM U1103, Université d'Auvergne, F-63000 Clermont-Ferrand, France.
| | - Aurélie Comptour
- EA7281 - Retinoids, Reproduction Developmental Diseases, School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France.
| | - Geoffroy Marceau
- EA7281 - Retinoids, Reproduction Developmental Diseases, School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department, CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France.
| | - Gael Clairefond
- EA7281 - Retinoids, Reproduction Developmental Diseases, School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France.
| | - Frédéric Chiambaretta
- EA7281 - Retinoids, Reproduction Developmental Diseases, School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department, CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; CHU Clermont-Ferrand, Ophthalmology Department, F-63000 Clermont-Ferrand, France.
| | - Vincent Sapin
- EA7281 - Retinoids, Reproduction Developmental Diseases, School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department, CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France.
| | - Loïc Blanchon
- EA7281 - Retinoids, Reproduction Developmental Diseases, School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France.
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11
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Dionet C, Müller-Barthélémy M, Marceau G, Denis JM, Averbeck D, Gueulette J, Sapin V, Pereira B, Tchirkov A, Chautard E, Verrelle P. Different dose rate-dependent responses of human melanoma cells and fibroblasts to low dose fast neutrons. Int J Radiat Biol 2016; 92:527-35. [PMID: 27258624 DOI: 10.1080/09553002.2016.1186300] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
PURPOSE To analyze the dose rate influence in hyper-radiosensitivity (HRS) of human melanoma cells to very low doses of fast neutrons and to compare to the behaviour of normal human skin fibroblasts. MATERIALS AND METHODS We explored different neutron dose rates as well as possible implication of DNA double-strand breaks (DSB), apoptosis, and energy-provider adenosine-triphosphate (ATP) levels during HRS. RESULTS HRS in melanoma cells appears only at a very low dose rate (VLDR), while a high dose rate (HDR) induces an initial cell-radioresistance (ICRR). HRS does not seem to be due either to DSB or to apoptosis. Both phenomena (HRS and ICRR) appear to be related to ATP availability for triggering cell repair. Fibroblast survival after neutron irradiation is also dose rate-dependent but without HRS. CONCLUSIONS Melanoma cells or fibroblasts exert their own survival behaviour at very low doses of neutrons, suggesting that in some cases there is a differential between cancer and normal cells radiation responses. Only the survival of fibroblasts at HDR fits the linear no-threshold model. This new insight into human cell responses to very low doses of neutrons, concerns natural radiations, surroundings of accelerators, proton-therapy devices, flights at high altitude. Furthermore, ATP inhibitors could increase HRS during high-linear energy transfer (high-LET) irradiation.
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Affiliation(s)
- Claude Dionet
- a Centre Jean Perrin , Laboratoire de Radio-Oncologie Expérimentale , Clermont-Ferrand , France
| | - Melanie Müller-Barthélémy
- a Centre Jean Perrin , Laboratoire de Radio-Oncologie Expérimentale , Clermont-Ferrand , France ;,b Clermont Université, Université d'Auvergne, EA7283 CREaT , Clermont-Ferrand , France
| | - Geoffroy Marceau
- c Biochimie et Biologie Moléculaire , CHU Clermont-Ferrand, Centre de Biologie , Clermont-Ferrand , France
| | - Jean-Marc Denis
- d Radiotherapy Department , Cliniques Universitaires Saint Luc-UCL , Bruxelles , Belgique ;,f Université Catholique de Louvain (UCL-IREC-MIRO) , Bruxelles , Belgique
| | - Dietrich Averbeck
- e Institut Curie-Recherche, UMR3348 CNRS/IC, Centre Universitaire, Orsay , France
| | - John Gueulette
- f Université Catholique de Louvain (UCL-IREC-MIRO) , Bruxelles , Belgique
| | - Vincent Sapin
- c Biochimie et Biologie Moléculaire , CHU Clermont-Ferrand, Centre de Biologie , Clermont-Ferrand , France
| | - Bruno Pereira
- g CHU Clermont-Ferrand, Biostatistics unit (DRCI) , Clermont-Ferrand , France
| | - Andrei Tchirkov
- h Cytogénétique médicale, CHU Estaing , Clermont-Ferrand , France
| | - Emmanuel Chautard
- a Centre Jean Perrin , Laboratoire de Radio-Oncologie Expérimentale , Clermont-Ferrand , France ;,b Clermont Université, Université d'Auvergne, EA7283 CREaT , Clermont-Ferrand , France
| | - Pierre Verrelle
- a Centre Jean Perrin , Laboratoire de Radio-Oncologie Expérimentale , Clermont-Ferrand , France ;,b Clermont Université, Université d'Auvergne, EA7283 CREaT , Clermont-Ferrand , France
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12
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Whitfield M, Ouvrier A, Cadet R, Damon-Soubeyrand C, Guiton R, Janny L, Kocer A, Marceau G, Pons-Rejraji H, Trousson A, Drevet JR, Saez F. Liver X Receptors (LXRs) Alpha and Beta Play Distinct Roles in the Mouse Epididymis1. Biol Reprod 2016; 94:55. [DOI: 10.1095/biolreprod.115.133538] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 01/11/2016] [Indexed: 01/07/2023] Open
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13
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Jabaudon M, Blondonnet R, Roszyk L, Bouvier D, Audard J, Clairefond G, Fournier M, Marceau G, Déchelotte P, Pereira B, Sapin V, Constantin JM. Soluble Receptor for Advanced Glycation End-Products Predicts Impaired Alveolar Fluid Clearance in Acute Respiratory Distress Syndrome. Am J Respir Crit Care Med 2015; 192:191-9. [PMID: 25932660 DOI: 10.1164/rccm.201501-0020oc] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
RATIONALE Levels of the soluble form of the receptor for advanced glycation end-products (sRAGE) are elevated during acute respiratory distress syndrome (ARDS) and correlate with severity and prognosis. Alveolar fluid clearance (AFC) is necessary for the resolution of lung edema but is impaired in most patients with ARDS. No reliable marker of this process has been investigated to date. OBJECTIVES To verify whether sRAGE could predict AFC during ARDS. METHODS Anesthetized CD-1 mice underwent orotracheal instillation of hydrochloric acid. At specified time points, lung injury was assessed by analysis of blood gases, alveolar permeability, lung histology, AFC, and plasma/bronchoalveolar fluid measurements of proinflammatory cytokines and sRAGE. Plasma sRAGE and AFC rates were also prospectively assessed in 30 patients with ARDS. MEASUREMENTS AND MAIN RESULTS The rate of AFC was inversely correlated with sRAGE levels in the plasma and the bronchoalveolar fluid of acid-injured mice (Spearman's ρ = -0.73 and -0.69, respectively; P < 10(-3)), and plasma sRAGE correlated with AFC in patients with ARDS (Spearman's ρ = -0.59; P < 10(-3)). Similarly, sRAGE levels were significantly associated with lung injury severity, and decreased over time in mice, whereas AFC was restored and lung injury resolved. CONCLUSIONS Our results indicate that sRAGE levels could be a reliable predictor of impaired AFC during ARDS, and should stimulate further studies on the pathophysiologic implications of RAGE axis in the mechanisms leading to edema resolution. Clinical trial registered with www.clinicaltrials.gov (NCT 00811629).
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Affiliation(s)
- Matthieu Jabaudon
- 1 Intensive Care Unit, Department of Anesthesiology, Critical Care and Perioperative Medicine, Estaing University Hospital.,2 Clermont Université, Université d'Auvergne, Clermont-Ferrand, France
| | - Raiko Blondonnet
- 1 Intensive Care Unit, Department of Anesthesiology, Critical Care and Perioperative Medicine, Estaing University Hospital.,2 Clermont Université, Université d'Auvergne, Clermont-Ferrand, France
| | - Laurence Roszyk
- 3 Department of Medical Biochemistry and Molecular Biology.,2 Clermont Université, Université d'Auvergne, Clermont-Ferrand, France
| | - Damien Bouvier
- 3 Department of Medical Biochemistry and Molecular Biology.,2 Clermont Université, Université d'Auvergne, Clermont-Ferrand, France
| | - Jules Audard
- 1 Intensive Care Unit, Department of Anesthesiology, Critical Care and Perioperative Medicine, Estaing University Hospital
| | - Gael Clairefond
- 2 Clermont Université, Université d'Auvergne, Clermont-Ferrand, France
| | | | - Geoffroy Marceau
- 3 Department of Medical Biochemistry and Molecular Biology.,2 Clermont Université, Université d'Auvergne, Clermont-Ferrand, France
| | | | - Bruno Pereira
- 6 Department of Clinical Research and Innovation, CHU Clermont-Ferrand, Clermont-Ferrand, France; and
| | - Vincent Sapin
- 3 Department of Medical Biochemistry and Molecular Biology.,2 Clermont Université, Université d'Auvergne, Clermont-Ferrand, France
| | - Jean-Michel Constantin
- 1 Intensive Care Unit, Department of Anesthesiology, Critical Care and Perioperative Medicine, Estaing University Hospital.,2 Clermont Université, Université d'Auvergne, Clermont-Ferrand, France
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14
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Courteix D, Valente-Dos-Santos J, Ferry B, Lac G, Lesourd B, Chapier R, Naughton G, Marceau G, Coelho-E-Silva MJ, Vinet A, Walther G, Obert P, Dutheil F. Correction: Multilevel Approach of a 1-Year Program of Dietary and Exercise Interventions on Bone Mineral Content and Density in Metabolic Syndrome - the RESOLVE Randomized Controlled Trial. PLoS One 2015; 10:e0140307. [PMID: 26440101 PMCID: PMC4595444 DOI: 10.1371/journal.pone.0140307] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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15
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Bouvier D, Rouzaire M, Marceau G, Prat C, Pereira B, Lemarié R, Deruelle P, Fajardy I, Gallot D, Blanchon L, Vambergue A, Sapin V. Aquaporins and Fetal Membranes From Diabetic Parturient Women: Expression Abnormalities and Regulation by Insulin. J Clin Endocrinol Metab 2015. [PMID: 26207951 DOI: 10.1210/jc.2015-2057] [Citation(s) in RCA: 15] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
CONTEXT During pregnancy, aquaporins (AQPs) expressed in fetal membranes are essential for controlling the homeostasis of the amniotic volume, but their regulation by insulin was never explored in diabetic women. OBJECTIVE The aim of our study was to investigate the involvement of AQPs 1, 3, 8, and 9 expressed in fetal membranes in diabetic parturient women and the control of their expression by insulin. DESIGN AND PARTICIPANTS From 129 fetal membranes in four populations (controls, type 1, type 2 [T2D], and gestational diabetes [GD]), we established an expression AQP profile. In a second step, the amnion was used to study the control of the expression and functions of AQPs 3 and 9 by insulin. MAIN OUTCOMES AND MEASURES The expression of transcripts and proteins of AQPs was studied by quantitative RT-PCR and ELISA. We analyzed the regulation by insulin of the expression of AQPs 3 and 9 in the amnion. A tritiated glycerol test enabled us to measure the impact of insulin on the functional characteristics. Using an inhibitor of phosphatidylinositol 3-kinase, we analyzed the insulin intracellular signaling pathway. RESULTS The expression of AQP3 protein was significantly weaker in groups T2D and GD. In nondiabetic fetal membranes, we showed for the amnion (but not for the chorion) a significant repression by insulin of the transcriptional expression of AQPs 3 and 9, which was blocked by a phosphatidylinositol 3-kinase inhibitor. CONCLUSION In fetal membranes, the repression of AQP3 protein expression and functions observed in vivo is allowed by the hyperinsulinism described in pregnant women with T2D or GD.
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Affiliation(s)
- Damien Bouvier
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
| | - Marion Rouzaire
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
| | - Geoffroy Marceau
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
| | - Cécile Prat
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
| | - Bruno Pereira
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
| | - Romain Lemarié
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
| | - Philippe Deruelle
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
| | - Isabelle Fajardy
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
| | - Denis Gallot
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
| | - Loïc Blanchon
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
| | - Anne Vambergue
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
| | - Vincent Sapin
- Retinoids, Reproduction Developmental Diseases (D.B., M.R., G.M., C.P., D.G., L.B., V.S.), School of Medicine, Clermont Université, Université d'Auvergne, F-63000 Clermont-Ferrand, France; Biochemistry and Molecular Biology Department (D.B., G.M., R.L. V.S.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; Biostatistics Unit Department (B.P.), CHU Clermont-Ferrand, F-63000 Clermont-Ferrand, France; School of Medicine Henri-Warembourg (P.D., I.F.), Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France; and Integrative Genomics and Modelization of Metabolic Diseases (A.V.), EGID, School of Medicine Henri-Warembourg, Université Lille 2, PRES Lille Nord de France, F-59000 Lille, France
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Courteix D, Valente-dos-Santos J, Ferry B, Lac G, Lesourd B, Chapier R, Naughton G, Marceau G, João Coelho-e-Silva M, Vinet A, Walther G, Obert P, Dutheil F. Multilevel Approach of a 1-Year Program of Dietary and Exercise Interventions on Bone Mineral Content and Density in Metabolic Syndrome--the RESOLVE Randomized Controlled Trial. PLoS One 2015; 10:e0136491. [PMID: 26376093 PMCID: PMC4574281 DOI: 10.1371/journal.pone.0136491] [Citation(s) in RCA: 15] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 08/01/2015] [Indexed: 01/04/2023] Open
Abstract
Background Weight loss is a public health concern in obesity-related diseases such as metabolic syndrome (MetS). However, restrictive diets might induce bone loss. The nature of exercise and whether exercise with weight loss programs can protect against potential bone mass deficits remains unclear. Moreover, compliance is essential in intervention programs. Thus, we aimed to investigate the effects that modality and exercise compliance have on bone mineral content (BMC) and density (BMD). Methods We investigated 90 individuals with MetS who were recruited for the 1-year RESOLVE trial. Community-dwelling seniors with MetS were randomly assigned into three different modalities of exercise (intensive resistance, intensive endurance, moderate mixed) combined with a restrictive diet. They were compared to 44 healthy controls who did not undergo the intervention. Results This intensive lifestyle intervention (15–20 hours of training/week + restrictive diet) resulted in weight loss, body composition changes and health improvements. Baseline BMC and BMD for total body, lumbar spine and femoral neck did not differ between MetS groups and between MetS and controls. Despite changes over time, BMC or BMD did not differ between the three modalities of exercise and when compared with the controls. However, independent of exercise modality, compliant participants increased their BMC and BMD compared with their less compliant peers. Decreases in total body lean mass and negative energy balance significantly and independently contributed to decreases in lumbar spine BMC. Conclusion After the one year intervention, differences relating to exercise modalities were not evident. However, compliance with an intensive exercise program resulted in a significantly higher bone mass during energy restriction than non-compliance. Exercise is therefore beneficial to bone in the context of a weight loss program. Trial Registration ClinicalTrials.gov NCT00917917
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Affiliation(s)
- Daniel Courteix
- Clermont Auvergne University, Blaise Pascal University, Laboratory of Metabolic Adaptations to Exercise in Physiological and Pathological conditions (AME2P, EA3533), Clermont-Ferrand, France
- Australian Catholic University, Faculty of Health, School of Exercise Science, Melbourne, Victoria, Australia
- Research Centre in Human Nutrition (CRNH) Auvergne, Clermont-Ferrand, France
| | - João Valente-dos-Santos
- Lusófona University of Humanities and Technologies, Faculty of Physical Education and Sport, Lisbon, Portugal
- University of Coimbra, Faculty of Sport Sciences and Physical Education, Research Unit for Sport and Physical Activity (CIDAF), Coimbra, Portugal
| | - Béatrice Ferry
- Clermont Auvergne University, Blaise Pascal University, Laboratory of Metabolic Adaptations to Exercise in Physiological and Pathological conditions (AME2P, EA3533), Clermont-Ferrand, France
- Research Centre in Human Nutrition (CRNH) Auvergne, Clermont-Ferrand, France
| | - Gérard Lac
- Clermont Auvergne University, Blaise Pascal University, Laboratory of Metabolic Adaptations to Exercise in Physiological and Pathological conditions (AME2P, EA3533), Clermont-Ferrand, France
- Research Centre in Human Nutrition (CRNH) Auvergne, Clermont-Ferrand, France
| | - Bruno Lesourd
- Clermont Auvergne University, Blaise Pascal University, Laboratory of Metabolic Adaptations to Exercise in Physiological and Pathological conditions (AME2P, EA3533), Clermont-Ferrand, France
- Research Centre in Human Nutrition (CRNH) Auvergne, Clermont-Ferrand, France
- Auvergne University, Faculty of Medicine, Geriatric, Clermont-Ferrand, France
| | - Robert Chapier
- Clermont Auvergne University, Blaise Pascal University, Laboratory of Metabolic Adaptations to Exercise in Physiological and Pathological conditions (AME2P, EA3533), Clermont-Ferrand, France
- Research Centre in Human Nutrition (CRNH) Auvergne, Clermont-Ferrand, France
| | - Geraldine Naughton
- Australian Catholic University, Faculty of Health, School of Exercise Science, Melbourne, Victoria, Australia
| | - Geoffroy Marceau
- University Hospital of Clermont-Ferrand (CHU), Biochemistry, Clermont-Ferrand, France
| | - Manuel João Coelho-e-Silva
- University of Coimbra, Faculty of Sport Sciences and Physical Education, Research Unit for Sport and Physical Activity (CIDAF), Coimbra, Portugal
| | - Agnès Vinet
- Laboratory of Pharm-Ecology Cardiovascular (EA4278), University of Avignon, Avignon, France
| | - Guillaume Walther
- Laboratory of Pharm-Ecology Cardiovascular (EA4278), University of Avignon, Avignon, France
| | - Philippe Obert
- Laboratory of Pharm-Ecology Cardiovascular (EA4278), University of Avignon, Avignon, France
| | - Frédéric Dutheil
- Clermont Auvergne University, Blaise Pascal University, Laboratory of Metabolic Adaptations to Exercise in Physiological and Pathological conditions (AME2P, EA3533), Clermont-Ferrand, France
- Australian Catholic University, Faculty of Health, School of Exercise Science, Melbourne, Victoria, Australia
- Research Centre in Human Nutrition (CRNH) Auvergne, Clermont-Ferrand, France
- University Hospital of Clermont-Ferrand (CHU), Preventive and Occupational Medicine, Clermont-Ferrand, France
- * E-mail:
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Prat C, Bouvier D, Comptour A, Marceau G, Belville C, Clairefond G, Blanc P, Gallot D, Blanchon L, Sapin V. All-trans-retinoic acid regulates aquaporin-3 expression and related cellular membrane permeability in the human amniotic environment. Placenta 2015; 36:881-7. [DOI: 10.1016/j.placenta.2015.05.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 05/07/2015] [Accepted: 05/11/2015] [Indexed: 10/23/2022]
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Heng AE, Montaurier C, Cano N, Caillot N, Blot A, Meunier N, Pereira B, Marceau G, Sapin V, Jouve C, Boirie Y, Deteix P, Morio B. Energy expenditure, spontaneous physical activity and with weight gain in kidney transplant recipients. Clin Nutr 2015; 34:457-64. [DOI: 10.1016/j.clnu.2014.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 03/15/2014] [Accepted: 05/01/2014] [Indexed: 10/25/2022]
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Blondonnet R, Jabaudon M, Clairefond G, Audard J, Bouvier D, Marceau G, Blanc P, Dechelotte P, Sapin V, Constantin JM. Elevated levels of soluble RAGE predict impaired alveolar fluid clearance in a translational mouse model of acute respiratory distress syndrome. Crit Care 2015. [PMCID: PMC4470432 DOI: 10.1186/cc14317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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Beaufrère AM, Neveux N, Patureau Mirand P, Buffière C, Marceau G, Sapin V, Cynober L, Meydinal-Denis D. Long-term intermittent glutamine supplementation repairs intestinal damage (structure and functional mass) with advanced age: assessment with plasma citrulline in a rodent model. J Nutr Health Aging 2014; 18:814-9. [PMID: 25389959 DOI: 10.1007/s12603-014-0554-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Glutamine is the preferred fuel for the rat small intestine and promotes the growth of intestinal mucosa, especially in the event of gut injury. Quantitatively, glutamine is one important precursor for intestinal citrulline release. The aim of this study was to determine whether the effect of glutamine on the increase in intestinal villus height is correlated with an increase in both gut mass and citrulline plasma level in very old rats. METHODS We intermittently supplemented very old (27-mo) female rats with oral glutamine (20% of diet protein). Intestinal histomorphometric analysis of the small bowel was performed. Amino acids, in particular citrulline, were measured in the plasma, liver and jejunum. Markers of renal (creatinine, urea) and liver (alanine aminotransferase [ALT]) and aspartate aminotransferase (AST) functions were measured to evaluate renal and liver functions in relation to aging and to glutamine supplementation. Liver glutathione was also determined to evaluate cellular redox state. RESULTS Glutamine supplementation maintains the body weight of very old rats, not by limiting sarcopenia but rather by increasing the organ mass of the splanchnic area. Total intestine mass was significantly higher in glutamine-supplemented rats than in controls (15%). Measurement of villus height and crypt depth demonstrated that the difference between villus and crypt was significantly improved in glutamine pre-treated rats compared to controls (~ 11%). Plasma citrulline also increased by 15% in glutamine-supplemented rats compared to controls. CONCLUSION Citrulline appears as a biomarker of enterocyte mass in villous atrophy associated with advanced age. Non-invasive measurement of this metabolite may be useful in following the state of the gastrointestinal tract in very old people, whose numbers are increasing worldwide and the care of whom is a major public health issue. The gut may contribute to the malnutrition caused by malabsorption frequently observed in the elderly.
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Affiliation(s)
- A M Beaufrère
- Dominique Meynial-Denis (PhD), Human Nutrition Unit, INRA and Human Nutrition Research Center, Theix 63122 - St Genes Champanelle, France. Phone: +33 (0)4 73 62 43 13; Fax: +33 (0)4 73 62 47 55; E-mail address:
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Blondonnet R, Jabaudon M, Clairefond G, Audard J, Bouvier D, Marceau G, Blanc P, Dechelotte P, Sapin V, Constantin JM. 0853. Elevated levels of soluble rage predict impaired alveolar fluid clearance in a translational mouse model of acute respiratory distress syndrome (ARDS). Intensive Care Med Exp 2014. [PMCID: PMC4796255 DOI: 10.1186/2197-425x-2-s1-p62] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Baptissart M, Vega A, Martinot E, Pommier AJ, Houten SM, Marceau G, de Haze A, Baron S, Schoonjans K, Lobaccaro JMA, Volle DH. Bile acids alter male fertility through G-protein-coupled bile acid receptor 1 signaling pathways in mice. Hepatology 2014; 60:1054-65. [PMID: 24798773 DOI: 10.1002/hep.27204] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 05/01/2014] [Indexed: 12/12/2022]
Abstract
UNLABELLED Bile acids (BAs) are signaling molecules that are involved in many physiological functions, such as glucose and energy metabolism. These effects are mediated through activation of the nuclear and membrane receptors, farnesoid X receptor (FXR-α) and TGR5 (G-protein-coupled bile acid receptor 1; GPBAR1). Although both receptors are expressed within the testes, the potential effect of BAs on testis physiology and male fertility has not been explored thus far. Here, we demonstrate that mice fed a diet supplemented with cholic acid have reduced fertility subsequent to testicular defects. Initially, germ cell sloughing and rupture of the blood-testis barrier occur and are correlated with decreased protein accumulation of connexin-43 (Cx43) and N-cadherin, whereas at later stages, apoptosis of spermatids is observed. These abnormalities are associated with increased intratesticular BA levels in general and deoxycholic acid, a TGR5 agonist, in particular. We demonstrate here that Tgr5 is expressed within the germ cell lineage, where it represses Cx43 expression through regulation of the transcriptional repressor, T-box transcription factor 2 gene. Consistent with this finding, mice deficient for Tgr5 are protected against the deleterious testicular effects of BA exposure. CONCLUSIONS These data identify the testis as a new target of BAs and emphasize TGR5 as a critical element in testicular pathophysiology. This work may open new perspectives on the potential effect of BAs on testis physiology during liver dysfunction.
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Affiliation(s)
- Marine Baptissart
- INSERM U 1103, Génétique Reproduction et Développement (GReD), Aubière, France; Clermont Université, Université Blaise, Pascal, GReD, BP 80026, Aubière, France; CNRS, UMR 6293, GReD, Aubière, France; Centre de Recherche en Nutrition Humaine d'Auvergne, Clermont-Ferrand, France
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Pons-Rejraji H, Brugnon F, Sion B, Maqdasy S, Gouby G, Pereira B, Marceau G, Gremeau AS, Drevet J, Grizard G, Janny L, Tauveron I. Evaluation of atorvastatin efficacy and toxicity on spermatozoa, accessory glands and gonadal hormones of healthy men: a pilot prospective clinical trial. Reprod Biol Endocrinol 2014; 12:65. [PMID: 25016482 PMCID: PMC4114109 DOI: 10.1186/1477-7827-12-65] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 07/07/2014] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Recommendations for cardiovascular disease prevention advocate lowering both cholesterol and low-density lipoprotein cholesterol systemic levels, notably by statin intake. However, statins are the subject of questions concerning their impact on male fertility. This study aimed to evaluate, by a prospective pilot assay, the efficacy and the toxicity of a decrease of cholesterol blood levels, induced by atorvastatin on semen quality and sexual hormone levels of healthy, normocholesterolaemic and normozoospermic men. METHODS Atorvastatin (10 mg daily) was administrated orally during 5 months to 17 men with normal plasma lipid and standard semen parameters. Spermatozoa parameters, accessory gland markers, semen lipid levels and blood levels of gonadal hormones were assayed before statin intake, during the treatment, and 3 months after its withdrawal. RESULTS Atorvastatin treatment significantly decreased circulating low-density lipoprotein cholesterol (LDL-C) and total cholesterol concentrations by 42% and 24% (p<0.0001) respectively, and reached the efficacy objective of the protocol. During atorvastatin therapy and/or 3 months after its withdrawal numerous semen parameters were significantly modified, such as total number of spermatozoa (-31%, p<0.05), vitality (-9.5%, p<0.05), total motility (+7.5%, p<0.05), morphology (head, neck and midpiece abnormalities, p<0.05), and the kinetics of acrosome reaction (p<0.05). Seminal concentrations of acid phosphatases (p<0.01), α-glucosidase (p<0.05) and L-carnitine (p<0.05) were also decreased during the therapy, indicating an alteration of prostatic and epididymal functions. Moreover, we measured at least one altered semen parameter in 35% of the subjects during atorvastatin treatment, and in 65% of the subjects after withdrawal, which led us to consider that atorvastatin is unsafe in the context of our study. CONCLUSIONS Our results show for the first time that atorvastatin significantly affects the sperm parameters and the seminal fluid composition of healthy men.
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Affiliation(s)
- Hanae Pons-Rejraji
- CHU Clermont Ferrand, Laboratoire de BDR: AMP-CECOS, F-63003 Clermont-Ferrand, France
- GReD, UMR CNRS 6293 INSERM U1103, Clermont Université, 63000 Clermont-Ferrand, France
| | - Florence Brugnon
- CHU Clermont Ferrand, Laboratoire de BDR: AMP-CECOS, F-63003 Clermont-Ferrand, France
- GReD, UMR CNRS 6293 INSERM U1103, Clermont Université, 63000 Clermont-Ferrand, France
| | - Benoit Sion
- Pharmacologie Fondamentale et Clinique de la Douleur, France Inserm, U 1107, Neuro-Dol, Clermont Université, Université d’Auvergne, F-63001 Clermont-Ferrand, France
| | - Salwan Maqdasy
- GReD, UMR CNRS 6293 INSERM U1103, Clermont Université, 63000 Clermont-Ferrand, France
- CHU Clermont-Ferrand, Service d’Endocrinologie-Diabétologie, F-63003 Clermont-Ferrand, France
| | - Gerald Gouby
- CHU de Clermont-Ferrand, Délégation à la Recherche Clinique et à l’Innovation (DRCI), F-63003 Clermont-Ferrand, France
| | - Bruno Pereira
- CHU Clermont-Ferrand, Biostatistics unit, DRCI, Clermont-Ferrand, France
| | - Geoffroy Marceau
- GReD, UMR CNRS 6293 INSERM U1103, Clermont Université, 63000 Clermont-Ferrand, France
- CHU Clermont-Ferrand, Laboratoire de Biochimie, F-63003 Clermont-Ferrand, France
| | - Anne-Sophie Gremeau
- CHU Clermont Ferrand, Laboratoire de BDR: AMP-CECOS, F-63003 Clermont-Ferrand, France
| | - Joel Drevet
- GReD, UMR CNRS 6293 INSERM U1103, Clermont Université, 63000 Clermont-Ferrand, France
- Pharmacologie Fondamentale et Clinique de la Douleur, France Inserm, U 1107, Neuro-Dol, Clermont Université, Université d’Auvergne, F-63001 Clermont-Ferrand, France
| | - Genevieve Grizard
- CHU Clermont Ferrand, Laboratoire de BDR: AMP-CECOS, F-63003 Clermont-Ferrand, France
| | - Laurent Janny
- CHU Clermont Ferrand, Laboratoire de BDR: AMP-CECOS, F-63003 Clermont-Ferrand, France
- GReD, UMR CNRS 6293 INSERM U1103, Clermont Université, 63000 Clermont-Ferrand, France
| | - Igor Tauveron
- GReD, UMR CNRS 6293 INSERM U1103, Clermont Université, 63000 Clermont-Ferrand, France
- CHU Clermont-Ferrand, Service d’Endocrinologie-Diabétologie, F-63003 Clermont-Ferrand, France
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Privat M, Radosevic-Robin N, Aubel C, Cayre A, Penault-Llorca F, Marceau G, Sapin V, Bignon YJ, Morvan D. BRCA1 induces major energetic metabolism reprogramming in breast cancer cells. PLoS One 2014; 9:e102438. [PMID: 25010005 PMCID: PMC4092140 DOI: 10.1371/journal.pone.0102438] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Accepted: 06/19/2014] [Indexed: 11/22/2022] Open
Abstract
The hypermetabolic nature of cancer cells and their increased reliance on “aerobic glycolysis”, as originally described by Otto Warburg and colleagues, are considered metabolic hallmarks of cancer cells. BRCA1 is a major tumor suppressor in breast cancer and it was implicated in numerous pathways resulting in anticarcinogenic functions. The objective of our study was to address specific contributions of BRCA1 to the metabolic features of cancer cells, including the so-called “Warburg effect”. To get a comprehensive approach of the role of BRCA1 in tumor cell metabolism, we performed a global transcriptional and metabolite profiling in a BRCA1-mutated breast cancer cell line transfected or not by wild-type BRCA1. This study revealed that BRCA1 induced numerous modifications of metabolism, including strong inhibition of glycolysis while TCA cycle and oxidative phosphorylation tended to be activated. Regulation of AKT by BRCA1 in both our cell model and BRCA1-mutated breast tumors was suggested to participate in the effect of BRCA1 on glycolysis. We could also show that BRCA1 induced a decrease of ketone bodies and free fatty acids, maybe consumed to supply Acetyl-CoA for TCA cycle. Finally increased activity of antioxidation pathways was observed in BRCA1-transfected cells, that could be a consequence of ROS production by activated oxidative phosphorylation. Our study suggests a new function for BRCA1 in cell metabolic regulation, globally resulting in reversion of the Warburg effect. This could represent a new mechanism by which BRCA1 may exert tumor suppressor function.
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Affiliation(s)
- Maud Privat
- Jean Perrin Comprehensive Cancer Center and ERTICA EA4677 Research Team, University of Auvergne, Clermont-Ferrand, France
| | - Nina Radosevic-Robin
- Jean Perrin Comprehensive Cancer Center and ERTICA EA4677 Research Team, University of Auvergne, Clermont-Ferrand, France
| | - Corinne Aubel
- Jean Perrin Comprehensive Cancer Center and ERTICA EA4677 Research Team, University of Auvergne, Clermont-Ferrand, France
| | - Anne Cayre
- Jean Perrin Comprehensive Cancer Center and ERTICA EA4677 Research Team, University of Auvergne, Clermont-Ferrand, France
| | - Frédérique Penault-Llorca
- Jean Perrin Comprehensive Cancer Center and ERTICA EA4677 Research Team, University of Auvergne, Clermont-Ferrand, France
| | - Geoffroy Marceau
- Laboratoire de biochimie médicale, Centre de biologie, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Vincent Sapin
- Laboratoire de biochimie médicale, Centre de biologie, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Yves-Jean Bignon
- Jean Perrin Comprehensive Cancer Center and ERTICA EA4677 Research Team, University of Auvergne, Clermont-Ferrand, France
- * E-mail:
| | - Daniel Morvan
- Jean Perrin Comprehensive Cancer Center and ERTICA EA4677 Research Team, University of Auvergne, Clermont-Ferrand, France
- INRA, UMR 1019, UNH, Clermont-Ferrand, France
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Rondanino C, Ouchchane L, Chauffour C, Marceau G, Déchelotte P, Sion B, Pons-Rejraji H, Janny L, Volle DH, Lobaccaro JMA, Brugnon F. Levels of liver X receptors in testicular biopsies of patients with azoospermia. Fertil Steril 2014; 102:361-371.e5. [PMID: 24842676 DOI: 10.1016/j.fertnstert.2014.04.033] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Revised: 04/12/2014] [Accepted: 04/18/2014] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To determine whether the transcription factors liver X receptors (LXRs) and their downstream genes, which are involved in the regulation of several testicular functions in mouse models, are differentially expressed in testes of men with nonobstructive azoospermia (NOA) or obstructive azoospermia (OA). DESIGN Prospective study. SETTING University hospital. PATIENT(S) Patients with various types of NOA (n=22) and with OA (n=5). INTERVENTION(S) Human testicular biopsies. MAIN OUTCOME MEASURE(S) Transcript levels were measured in testicular biopsies with the use of quantitative polymerase chain reaction. Correlations of LXR mRNA levels with the number of germ cells, the expression of proliferation and apoptosis markers, and the amount of intratesticular lipids and testosterone were evaluated. The localization of LXRα was analyzed by immunofluorescence. RESULT(S) LXR mRNA levels were decreased by 49%-98% in NOA specimens and positively correlated with germ cell number. Accumulations of IDOL and SREBP1c (LXR targets involved in lipid homeostasis) were 1.8-2.1 times lower in NOA samples and mRNA levels of the SREBP1c target gene ELOVL6 were increased 1.9-2.4-fold. Interestingly, the amount of triglycerides and free fatty acids were higher in NOA testes (3.4-12.2-fold). LXRα was present in Leydig cells. Accumulations of LXR downstream genes encoding the steroidogenic proteins StAR and 3βHSD2 were higher in NOA testes (5.9-12.8-fold). CONCLUSION(S) Knowledge of changes in the transcript levels of LXRs and some of their downstream genes during altered spermatogenesis may help us to better understand the physiopathology of testicular failure in azoospermic patients.
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Affiliation(s)
- Christine Rondanino
- Génétique Reproduction et Développement, Clermont Université, Clermont-Ferrand, France; CNRS, UMR 6293, GReD, Aubière, France; INSERM, UMR 1103, GReD, Aubière, France; Centre de Recherche en Nutrition Humaine d'Auvergne, Clermont-Ferrand, France; AMP-CECOS, CHU Clermont-Ferrand, CHU Estaing, Clermont-Ferrand, France
| | - Lemlih Ouchchane
- Laboratoire ISIT, UMR 6284 Université d'Auvergne-CNRS, Clermont-Ferrand, France; Service de Biostatistiques, Clermont-Ferrand, France
| | - Candice Chauffour
- Génétique Reproduction et Développement, Clermont Université, Clermont-Ferrand, France; CNRS, UMR 6293, GReD, Aubière, France; INSERM, UMR 1103, GReD, Aubière, France; Centre de Recherche en Nutrition Humaine d'Auvergne, Clermont-Ferrand, France; AMP-CECOS, CHU Clermont-Ferrand, CHU Estaing, Clermont-Ferrand, France
| | - Geoffroy Marceau
- Laboratoire de Biochimie, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Pierre Déchelotte
- Service d'Anatomie Pathologique, CHU Clermont-Ferrand, CHU Estaing, Clermont-Ferrand, France
| | - Benoît Sion
- Laboratoire NEURO-DOL, INSERM U 1107, Clermont-Ferrand, France; Laboratoire de Pharmacologie Fondamentale et Clinique de la Douleur, Université d'Auvergne, Clermont-Ferrand, France
| | - Hanae Pons-Rejraji
- Génétique Reproduction et Développement, Clermont Université, Clermont-Ferrand, France; CNRS, UMR 6293, GReD, Aubière, France; INSERM, UMR 1103, GReD, Aubière, France; AMP-CECOS, CHU Clermont-Ferrand, CHU Estaing, Clermont-Ferrand, France
| | - Laurent Janny
- Génétique Reproduction et Développement, Clermont Université, Clermont-Ferrand, France; CNRS, UMR 6293, GReD, Aubière, France; INSERM, UMR 1103, GReD, Aubière, France; AMP-CECOS, CHU Clermont-Ferrand, CHU Estaing, Clermont-Ferrand, France
| | - David H Volle
- Génétique Reproduction et Développement, Clermont Université, Clermont-Ferrand, France; CNRS, UMR 6293, GReD, Aubière, France; INSERM, UMR 1103, GReD, Aubière, France; Centre de Recherche en Nutrition Humaine d'Auvergne, Clermont-Ferrand, France
| | - Jean-Marc A Lobaccaro
- Génétique Reproduction et Développement, Clermont Université, Clermont-Ferrand, France; CNRS, UMR 6293, GReD, Aubière, France; INSERM, UMR 1103, GReD, Aubière, France; Centre de Recherche en Nutrition Humaine d'Auvergne, Clermont-Ferrand, France
| | - Florence Brugnon
- Génétique Reproduction et Développement, Clermont Université, Clermont-Ferrand, France; CNRS, UMR 6293, GReD, Aubière, France; INSERM, UMR 1103, GReD, Aubière, France; AMP-CECOS, CHU Clermont-Ferrand, CHU Estaing, Clermont-Ferrand, France.
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Duchenne J, Mestres S, Dublanchet N, Combaret N, Marceau G, Caumon L, Dutoit L, Ughetto S, Motreff P, Sapin V, Schmidt J. Diagnostic accuracy of copeptin sensitivity and specificity in patients with suspected non-ST-elevation myocardial infarction with troponin I below the 99th centile at presentation. BMJ Open 2014; 4:e004449. [PMID: 24662448 PMCID: PMC3975746 DOI: 10.1136/bmjopen-2013-004449] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE To determine whether copeptin-us can rule out diagnosis of non-ST-segment elevation myocardial infarction (NSTEMI) without prolonged monitoring and serial blood sampling in patients with high-sensitive cardiac troponin I (hs-cTnI) below the 99th centile at presentation to the emergency department (ED) [corrected]. DESIGN Prospective, non-randomised, individual blinded diagnostic accuracy study. SETTING Two EDs of a rural region of France. PARTICIPANTS Patients with chest pain suspected of NSTEMI with onset within the last 12 h were considered for enrollment. INTERVENTIONS Serial clinical, electrographical and biochemical investigations were performed at admission and after 2, 4, 6 and 12 h. Hs-cTnI was measured using an assay with Dimension VISTA, Siemens [corrected]. Copeptin was measured by the BRAHMS copeptin-us assay on the KRYPTOR Compact Plus system. The follow-up period was 90 days. PRIMARY AND SECONDARY OUTCOME MEASURES Copeptin, troponin, myoglobin and creatine kinase values. Clinical and paraclinical events. The final diagnosis was adjudicated blinded to copeptin result. RESULTS During 12 months, 102 patients were analysed. Final diagnosis was NSTEMI for 7.8% (n=8), unstable angina for 3.9% (n=4), cardiac but non-coronary artery disease for 8.8% (n=9), non-cardiac chest pain for 52% (n=53) and unknown for 27.5% (n=28). There was no statistical difference for copeptin values between patients with NSTEMI and others (respectively 5.5 pmol/L IQR (3.1-7.9) and 6.5 pmol/L IQR (3.9-12.1), p=0.49). Only one patient with NSTEMI had a copeptin value above the cut-off of 95th centile at admission. CONCLUSIONS In this study, copeptin does not add a diagnostic value at admission to ED for patients with suspected acute coronary syndrome without ST-segment elevation and with hs-cTnI below the 99th centile [corrected]. TRIAL REGISTRATION NUMBER Clinicaltrials.gov identifier: NCT01334645.
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Mouzat K, Baron S, Marceau G, Caira F, Sapin V, Volle DH, Lumbroso S, Lobaccaro JM. Emerging roles for LXRs and LRH-1 in female reproduction. Mol Cell Endocrinol 2013; 368:47-58. [PMID: 22750099 DOI: 10.1016/j.mce.2012.06.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [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] [Received: 01/16/2012] [Revised: 06/18/2012] [Accepted: 06/19/2012] [Indexed: 01/05/2023]
Abstract
Nutritional status is known to control female reproductive physiology. Many reproductive pathologies such as anorexia nervosa, dystocia and preeclampsia, have been linked to body mass index and to metabolic syndrome. Lipid metabolism has also been associated with ovarian, uterine and placental functions. Among the regulators of lipid homeostasis, the Liver X Receptors (LXRs) and the Liver Receptor Homolog-1 (LRH-1), two members of the nuclear receptor superfamily, play a central role. LXRs are sensitive to intracellular cholesterol concentration and decrease plasma cholesterol, allowing to considering them as "cholesterol sensors". LRH-1 shares many target-genes with LXRs and has been considered for a long time as a real orphan nuclear receptor, but recent findings showed that phospholipids are ligands for this nuclear receptor. Acting in concert, LXRs and LRH-1 could thus be sensitive to slight modifications in cellular lipid balance, tightly maintaining their cellular concentrations. These last years, the use of transgenic mice clarified the roles of these nuclear receptors in many physiological functions. This review will be focused on the roles of LXRs and LRH-1 on female reproduction. Their contribution to ovarian endocrine and exocrine functions, as well as uterine and placental physiology will be discussed. The future challenge will thus be to target these nuclear receptors to prevent lipid-associated reproductive diseases in women.
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Affiliation(s)
- Kevin Mouzat
- Laboratoire de Biochimie, Centre Hospitalier Universitaire de Nîmes, Hôpital Carémeau, Place du Pr. Robert Debré, F-30029 Nimes, France.
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Mathieu S, Palat S, Pereira B, Kemeny JL, Marceau G, Dubray C, Soubrier M. Response to 'Statins accelerate the onset of collagen type II-induced arthritis in mice'. Arthritis Res Ther 2013; 15:402. [PMID: 23472824 PMCID: PMC3672816 DOI: 10.1186/ar4169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Prat C, Blanchon L, Borel V, Gallot D, Herbet A, Bouvier D, Marceau G, Sapin V. Ontogeny of Aquaporins in Human Fetal Membranes1. Biol Reprod 2012; 86:48. [DOI: 10.1095/biolreprod.111.095448] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Blanchon L, Marceau G, Borel V, Prat C, Herbet A, Bouvier D, Gallot D, Sapin V. [Implications of retinoid pathway in human fetal membranes: study of target genes]. ACTA ACUST UNITED AC 2011; 39:370-2. [PMID: 21596610 DOI: 10.1016/j.gyobfe.2011.04.009] [Citation(s) in RCA: 6] [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: 01/17/2011] [Accepted: 02/07/2011] [Indexed: 11/19/2022]
Abstract
Retinoids (active derivatives of vitamin A) were already demonstrated to be important morphogenes and their implication at the placental and fetal level was already established. A new field of research is now developed in order to show their role on fetal membranes constituted by amnion and chorion. To describe the role of retinoids on these membranes, our studies were focused on target gene research. Firstly, all metabolism enzymes needed to vitamin A pathways were demonstrated to be present and active in signal transduction. Secondly, a bioinformatic analysis was performed to assess a list of potential target genes that could be classified in different biological pathways (inflammation, retinoids, hormones, vascularization, extracellular matrix and water homeostasis). Then, it was demonstrated that the gene coding for PLAT, implied in the degradation of extracellular matrix during programmed or premature rupture of membranes, is regulated by retinoids in a two steps mechanism. Finally, preliminary data showed that some aquaporins, which control water transport across membranes, are expressed and regulated by retinoids in the fetal membranes. A disregulation in pathologies like oligo or poly-hydramnios can be anticipated. Improvement of our knowledge about the retinoid implications is a key point in order to obtain a precise and complete documented cartography of the vitamin A (regulating) in amniotic membranes (regulated) that will permit the development of new diagnostic and therapeutic strategies.
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Affiliation(s)
- L Blanchon
- GReD, UMR CNRS 6247, Inserm U 931, faculté de médecine, Clermont-Université, 28, place Henri-Dunant, 63000 Clermont-Ferrand, France.
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Tchirkov A, Sapin V, Marceau G, Chautard E, Narla G, Veronese L, Friedman S, Khalil T, Vago P, Kemeny JL, Verrelle P. Increased expression of the oncogenic KLF6-SV1 transcript in human glioblastoma. Clin Chem Lab Med 2010; 48:1167-70. [PMID: 20545576 DOI: 10.1515/cclm.2010.219] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [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]
Abstract
BACKGROUND Gliomas constitute the vast majority of primary central nervous system tumors in adults. Glioblastoma multiforme (GBM) is the most aggressive form of these primary brain tumors. There is a need to define diagnostic and prognostic markers that may help to distinguish GBM from non-GBM tumors. The Krüppel-like factor 6 (KLF6) gene has recently emerged as a promising candidate. The goal of our study was to determine if there is a link between KLF6 splice variants expression and different grades of gliomas. METHODS Fifty-three primary gliomas tumor samples were analyzed using quantitative real-time PCR for the total KLF6, wild-type and alternatively spliced (SV1) KLF6 mRNA. RESULTS Compared to the non-GBM group, the GBM group had a 2.2-fold increase in the mean level of total KLF6 mRNA expression. GBM showed a 2.1-fold increase in the KLF6 splicing ratio. In addition, KLF6-SV1 mRNA expression levels were also 2.2-fold higher in the GBM group, suggesting that the increase in the KLF6 splicing ratio was due to increased expression of the KLF6-SV1 oncogenic splice variant. CONCLUSIONS Our study demonstrates that quantification of total and spliced forms of KLF6 may provide a new and useful supplementary molecular tool for grading glioma.
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Affiliation(s)
- Andrei Tchirkov
- University Clermont 1, EA 3846, School of Medicine, Clermont-Ferrand, France
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Abstract
BACKGROUND The interference of ascorbic acid in the determination of plasma uric acid concentrations, by decreasing the formation of chromophore in Trinder's reaction, is well known. By contrast, the effects of other antioxidant vitamins, such as retinol and alpha-tocopherol have not been investigated. Knowledge of the analytical interaction of these antioxidants in the uric acid assay would be useful. METHODS The effect of a mix of vitamins (Cernevit) on uric acid analysis in a patient hospitalized in a neurological intensive care unit was observed. The effects of the different antioxidant components of the mixture (retinol, alpha-tocopherol and ascorbic acid) on the concentration of uric acid from a pool of plasma were also tested. RESULTS Among the different combinations of vitamins tested, only retinol potentiated the antioxidant effect of ascorbic acid. The most marked effect was observed with 80 IU/mL of retinol and 5.7 mmol/L of ascorbic acid. CONCLUSIONS We demonstrate for the first time the synergistic interference of ascorbic acid and retinol on the measurement of uric acid in plasma. We established that ascorbic acid interference is potentiated by regeneration of reduced ascorbic acid by retinol. Such interference must be kept in mind to avoid misinterpreting low plasma uric acid concentrations in patients in whom this analyte is critical.
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Affiliation(s)
- Damien Bouvier
- Department of Biochemistry, Clermont-Ferrand Teaching Hospital, Clermont-Ferrand, France
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Sahut-Barnola I, de Joussineau C, Val P, Lambert-Langlais S, Damon C, Lefrançois-Martinez AM, Pointud JC, Marceau G, Sapin V, Tissier F, Ragazzon B, Bertherat J, Kirschner LS, Stratakis CA, Martinez A. Cushing's syndrome and fetal features resurgence in adrenal cortex-specific Prkar1a knockout mice. PLoS Genet 2010; 6:e1000980. [PMID: 20548949 PMCID: PMC2883593 DOI: 10.1371/journal.pgen.1000980] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [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: 12/31/2009] [Accepted: 05/10/2010] [Indexed: 01/03/2023] Open
Abstract
Carney complex (CNC) is an inherited neoplasia syndrome with endocrine overactivity. Its most frequent endocrine manifestation is primary pigmented nodular adrenocortical disease (PPNAD), a bilateral adrenocortical hyperplasia causing pituitary-independent Cushing's syndrome. Inactivating mutations in PRKAR1A, a gene encoding the type 1 α-regulatory subunit (R1α) of the cAMP–dependent protein kinase (PKA) have been found in 80% of CNC patients with Cushing's syndrome. To demonstrate the implication of R1α loss in the initiation and development of PPNAD, we generated mice lacking Prkar1a specifically in the adrenal cortex (AdKO). AdKO mice develop pituitary-independent Cushing's syndrome with increased PKA activity. This leads to autonomous steroidogenic genes expression and deregulated adreno-cortical cells differentiation, increased proliferation and resistance to apoptosis. Unexpectedly, R1α loss results in improper maintenance and centrifugal expansion of cortisol-producing fetal adrenocortical cells with concomitant regression of adult cortex. Our data provide the first in vivo evidence that loss of R1α is sufficient to induce autonomous adrenal hyper-activity and bilateral hyperplasia, both observed in human PPNAD. Furthermore, this model demonstrates that deregulated PKA activity favors the emergence of a new cell population potentially arising from the fetal adrenal, giving new insight into the mechanisms leading to PPNAD. Carney complex is a rare familial disease characterized by a predisposition to develop multiple endocrine tumors and highly morbid syndromes due to endocrine overactivities. Its most frequent endocrine manifestation, hypersecretion of glucocorticoids i.e. Cushing's syndrome, is caused by micronodular adrenal gland hyperplasia, an unusual neoplasia which combines both hyperplastic and atrophic areas. Inactivating mutations of the gene encoding the regulatory subunit 1α (R1α) of the cAMP–dependent protein kinase were frequently found in these patients, but the causal link between loss of R1α and onset of this adrenal disorder had not yet been established. Here, we describe the first mouse model mimicking this disease and provide mechanistic insights into endocrine overactivity and neoplastic transformation. Indeed, we show that lack of R1α induces autonomous expression of genes involved in steroid biosynthesis and resurgence of hyperplastic fetal-like cells with concomitant defects in cell renewal of the adult cortex. Our data therefore represent a substantial conceptual advance on the cellular dynamics involved in adrenal gland homeostasis. They suggest that regression of fetal structures may be important to establish normal endocrine functions and to allow cell renewal in the definitive cortex. Failure to clear out cells of fetal features in R1α-deficient adrenals leads to morbid hyperplasia.
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Affiliation(s)
- Isabelle Sahut-Barnola
- CNRS UMR6247, Génétique Reproduction et Développement (GReD), Clermont Université, Aubière, France
| | - Cyrille de Joussineau
- CNRS UMR6247, Génétique Reproduction et Développement (GReD), Clermont Université, Aubière, France
| | - Pierre Val
- CNRS UMR6247, Génétique Reproduction et Développement (GReD), Clermont Université, Aubière, France
| | - Sarah Lambert-Langlais
- CNRS UMR6247, Génétique Reproduction et Développement (GReD), Clermont Université, Aubière, France
| | - Christelle Damon
- CNRS UMR6247, Génétique Reproduction et Développement (GReD), Clermont Université, Aubière, France
| | | | - Jean-Christophe Pointud
- CNRS UMR6247, Génétique Reproduction et Développement (GReD), Clermont Université, Aubière, France
| | - Geoffroy Marceau
- CNRS UMR6247, Génétique Reproduction et Développement (GReD), Clermont Université, Aubière, France
- Laboratoire de Biochimie, Centre de Biologie, CHU G. Montpied, Clermont-Ferrand, France
| | - Vincent Sapin
- CNRS UMR6247, Génétique Reproduction et Développement (GReD), Clermont Université, Aubière, France
- Laboratoire de Biochimie, Centre de Biologie, CHU G. Montpied, Clermont-Ferrand, France
| | - Frédérique Tissier
- INSERM U567, CNRS UMR8104, Institut Cochin, Department of Endocrinologie, Métabolisme, et Cancer, Université Paris Descartes, AP-HP Hôpital Cochin, France
| | - Bruno Ragazzon
- INSERM U567, CNRS UMR8104, Institut Cochin, Department of Endocrinologie, Métabolisme, et Cancer, Université Paris Descartes, AP-HP Hôpital Cochin, France
| | - Jérôme Bertherat
- INSERM U567, CNRS UMR8104, Institut Cochin, Department of Endocrinologie, Métabolisme, et Cancer, Université Paris Descartes, AP-HP Hôpital Cochin, France
| | - Lawrence S. Kirschner
- Department of Molecular Virology, Immunology, and Medical Genetics, Ohio State University, Columbus, Ohio, United States of America
- Division of Endocrinology, Diabetes, and Metabolism, Department of Internal Medicine, Ohio State University, Columbus, Ohio, United States of America
| | - Constantine A. Stratakis
- Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, Maryland, United States of America
| | - Antoine Martinez
- CNRS UMR6247, Génétique Reproduction et Développement (GReD), Clermont Université, Aubière, France
- * E-mail:
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Goumy C, Gouas L, Marceau G, Coste K, Veronese L, Gallot D, Sapin V, Vago P, Tchirkov A. Retinoid pathway and congenital diaphragmatic hernia: hypothesis from the analysis of chromosomal abnormalities. Fetal Diagn Ther 2010; 28:129-39. [PMID: 20501978 DOI: 10.1159/000313331] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2009] [Accepted: 10/15/2009] [Indexed: 11/19/2022]
Abstract
BACKGROUND/OBJECTIVES Although there is strong evidence implicating genetic factors in congenital diaphragmatic hernia (CDH) pathogenesis, few causal genes have been identified. Many studies suggest that early disruption of the retinoid signaling pathway during gestation may contribute to CDH etiology. Chromosome abnormalities are detected in 10-20% of CDH cases. Chromosomal regions that are involved in balanced translocations or are recurrently deleted or duplicated in patients with CDH are of particular interest to researchers because they are more likely to harbor genes that cause or predispose one to the development of CDH. The aim of this review was to select chromosome loci which have been shown to be associated with CDH and to investigate if these loci contain candidate genes involved in the retinoic signaling pathway. DATA SOURCES We have re-examined the known CDH-critical chromosomal loci and searched in available databases, such as the UCSC Genome Browser and OMIM, to see whether candidate genes related to the retinoid pathway were present within these loci. RESULTS Twelve retinoid-related genes have been proposed as potential candidates. Among them, COUP-TFII, FOG2 and GATA4 have already been well studied, especially in animal models. We propose other candidates such as STRA6, LRAT, CRBP1, CRBP2 and CRABP1 are directly implicated in retinoic acid metabolism. CONCLUSION The identification of CDH-related genes and pathways affecting a normal diaphragm will contribute to the understanding of the pathophysiology of this severe embryopathy and might help to facilitate prenatal management and devise more individual treatment strategies. Further studies are necessary to screen large cohorts of patients with CDH for microimbalances or de novo mutations in these candidate genes. Moreover, functional analyses are needed to establish their exact role in CDH etiology.
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Affiliation(s)
- Carole Goumy
- University Clermont, UFR Médecine, Histologie Embryologie Cytogénétique, CHU Clermont-Ferrand, France.
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Delabaere A, Marceau G, Kemeny S, Sapin V, Ughetto S, Coste K, Gallot D. Intra-amniotic N-terminal pro-brain natriuretic peptide in severe twin-to-twin transfusion syndrome treated by fetoscopic laser coagulation. Ultrasound Obstet Gynecol 2010; 35:620-621. [PMID: 20131332 DOI: 10.1002/uog.7579] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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36
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Goumy C, Coste K, Marceau G, Gouas L, Tchirkov A, Vago P, Gallot D, Sapin V. Fetal skin fibroblasts: a cell model for studying the retinoid pathway in congenital diaphragmatic hernia. ACTA ACUST UNITED AC 2010; 88:195-200. [PMID: 20063272 DOI: 10.1002/bdra.20647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Although there is strong evidence that genetic factors play a pathogenic role in congenital diaphragmatic hernia (CDH), few causal genes have been identified in humans. A number of studies, essentially in animal models, have suggested that disruption of the retinoid signaling pathway plays a major role in the pathogenesis of CDH. Our hypothesis is that human fetal skin fibroblasts express some metabolic and molecular actors of the retinoid pathway and that they offer convenient cellular material for investigating the molecular retinoid pathway defects associated with CDH. METHODS We first established the expression of receptors, enzymes and binding proteins involved in the retinoic acid (RA) pathway in non-CDH fetal skin fibroblasts using RT-PCR and immunocytochemistry approaches. We then studied the expression of these genes in skin fibroblasts from seven fetuses with isolated and nonisolated CDH. RESULTS Fetal skin fibroblasts expressed enzymes involved in RA metabolism as well as nuclear receptors for signal transduction. Basal levels of retinoic acid receptor, retinaldehyde dehydrogenase 2, and CYP26 (cytochrome P450 RAI) expression were altered in two of seven fetuses. Interestingly, these genes were previously described as abnormally expressed in CDH physiopathology. CONCLUSION Our results suggest that human fetal skin fibroblasts could be useful for studying retinoid signaling pathway disruption in the context of CDH. Our proposal is strengthened by the fact that we identified CDH fetuses for which molecular and metabolic actors of the retinoid pathway were not detected.
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Affiliation(s)
- Carole Goumy
- Clermont Université, UFR Médecine, Histologie Embryologie Cytogénétique, Clermont-Ferrand, France.
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Mouzat K, Volat F, Baron S, Alves G, Pommier AJC, Volle DH, Marceau G, DeHaze A, Déchelotte P, Duggavathi R, Caira F, Lobaccaro JMA. Absence of nuclear receptors for oxysterols liver X receptor induces ovarian hyperstimulation syndrome in mice. Endocrinology 2009; 150:3369-75. [PMID: 19325005 PMCID: PMC2703512 DOI: 10.1210/en.2008-1519] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [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: 11/19/2022]
Abstract
Ovarian hyperstimulation syndrome is a frequent complication occurring during in vitro fertilization cycles. It is characterized by a massive ovarian enlargement associated with an accumulation of extra vascular fluid. Here we show that liver X receptor (LXR)-alpha and LXR-beta deficient mice present many clinical and biological signs of ovarian hyperstimulation syndrome: ovarian enlargement, hemorrhagic corpora lutea, increased ovarian vascular permeability, and elevated estradiol. Ovulation stimulation resulted in excessive ovarian response to exogenous gonadotropins because follicle number and estradiol production were higher in transgenic mice. LXR deficiency also leads to perturbations in general inflammatory status, associated with ovarian il-6 deregulation. Upon treatment with the synthetic LXR agonist T09101317, serum estradiol and expression of star and cyp11a1 genes were markedly increased in wild-type mice, showing that LXRs are key regulators of ovarian steroidogenesis. These results suggest that LXRs control the ovulation by regulating endocrine and vascular processes.
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Affiliation(s)
- Kevin Mouzat
- Unité Mixte de Recherche, Centre National de la Recherche Scientifique 6247, Clermont Université, Centre de Recherche en Nutrition Humaine d'Auvergne, 63177 Aubière Cedex, France
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Abstract
The collagenolytic effects of the tissue-type plasminogen activator (t-PA) leading to extracellular matrix degradation are clearly involved in the physiopathology of human foetal membranes rupture. Nevertheless, the regulation of t-PA gene expression in extraembryonic developmental contexts remains unknown. The aim of our study is to propose the retinoic acids (RAs) as molecular regulators of t-PA expression in foetal membranes. RA induced t-PA mRNA and proteins in a time-dependent manner in amniotic membrane explants and Wistar Institute Susan Hayflick (WISH) cells. Furthermore, the use of cycloheximide revealed a two-step regulation of t-PA gene. Gene reporter assays confirmed that the RA-induced t-PA gene expression occurred through interactions of retinoid receptors (RARs and RXRs) with a DR5 response element located at –7 kb from the transcription site. Site-directed mutagenesis of this region of the t-PA promoter showed that SP1 factor was also retinoid-mediated induction, and immunoprecipitation assays revealed that SP1 and RAR/RXR interacted physically. Chromatin immunoprecipitation demonstrated that interactions between RARs, RXRs and t-PA promoter were time dependent: RAR-α/RXR-α bound DR5 motif before and up to 12 hrs of RA exposure, and RAR-β/RXR-α bound DR5 response element after 12 hrs of RA treatment. Finally, experiments using shRNA and RAR-β-specific antagonist revealed that reducing RAR-β induction decreased t-PA induction. Altogether, our results established that the RA-mediated regulation of t-PA in human foetal membranes occurred through two steps, with a major role played by RAR-β.
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Affiliation(s)
- Valerie Borel
- Génétique Reproduction et Développement (GReD), UMR CNRS 6247, Clermont Université, INSERM U931, Faculté de Médecine, Clermont-Ferrand, France
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Sahut-Barnola I, De Joussineau C, Val P, Lambert-Langlais S, Lefrançois-Martinez AM, Pointud JC, Marceau G, Sapin V, Ragazzon B, Bertherat J, Kirschner LS, Stratakis CA, Martinez A. Mouse model for bilateral adrenal hyperplasia. Ann Endocrinol (Paris) 2009; 70:194. [PMID: 19286161 DOI: 10.1016/j.ando.2009.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- I Sahut-Barnola
- CNRS UMR6247, génétique reproduction et développement (GReD), Clermont université, 24, avenue des Landais, 63177 Aubière cedex, France
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40
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Merlin E, Zohar S, Jérôme C, Veyrat-Masson R, Marceau G, Paillard C, Auvrignon A, Le Moine P, Gandemer V, Sapin V, Halle P, Boiret-Dupré N, Chevret S, Deméocq F, Dubray C, Kanold J. Hematopoietic progenitor cell mobilization and harvesting in children with malignancies: do the advantages of pegfilgrastim really translate into clinical benefit? Bone Marrow Transplant 2008; 43:919-25. [DOI: 10.1038/bmt.2008.412] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gallot D, Coste K, Jani J, Roubliova X, Marceau G, Velemir L, Verheyen A, Lemery D, Sapin V, Deprest J. Effects of maternal retinoic acid administration in a congenital diaphragmatic hernia rabbit model. Pediatr Pulmonol 2008; 43:594-603. [PMID: 18435480 DOI: 10.1002/ppul.20829] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Maternal retinoid administration has beneficial effects on lung development in the nitrofen rodent toxic model of congenital diaphragmatic hernia (DH). We wanted to investigate the effects in a surgical model, where the retinoid signaling pathway is not primarily disrupted by the toxic agent. We created DH in fetal rabbits at day 23 of gestation, administrated to the does all trans-retinoic acid (ATRA) or vehicle (VHC) intramuscularly for 8 consecutive days and harvested normal and operated (DH) fetuses at 31 d (n = 7 in each group). Normal lungs exposed to ATRA had increased surfactant protein mRNA levels without change in type II pneumocyte density. There was no measurable effect on lung-to-body weight ratio and airway morphometry by ATRA. In DH lungs (DH/VHC) surfactant protein mRNA levels were increased, as well as the density of type II pneumocytes. When supplemented with ATRA (DH/ATRA) these parameters returned to normal (VHC). Cell proliferation or apoptosis were not influenced by ATRA supplementation. In conclusion, maternal ATRA supplementation does not affect gross anatomic, morphologic or proliferation indices in hypoplastic lungs related to surgically induced DH in rabbit. However, ATRA lowers surfactant protein expression and normalizes type I/II pneumocyte ratio to what is observed in normal lungs.
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Affiliation(s)
- Denis Gallot
- Université d'Auvergne, JE2447 ARDEMO, F-63000, Clermont-Ferrand, France
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Henry-Berger J, Mouzat K, Baron S, Bernabeu C, Marceau G, Saru JP, Sapin V, Lobaccaro JMA, Caira F. Endoglin (CD105) expression is regulated by the liver X receptor alpha (NR1H3) in human trophoblast cell line JAR. Biol Reprod 2008; 78:968-75. [PMID: 18276933 DOI: 10.1095/biolreprod.107.066498] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Human implantation involves invasion of the uterine wall and remodeling of uterine arteries by extravillous cytotrophoblasts. Defects in these early steps of placental development lead to poor placentation and are often associated with preeclampsia, a frequent complication of human pregnancy. One of the complex mechanisms controlling trophoblast invasion involves the activation of the liver X receptor beta (or NR1H2, more commonly known as LXRbeta) by oxysterols known as potent LXR activators. This activation of LXRbeta leads to a decrease of trophoblast invasion. The identification of new target genes of LXR in the placenta could aid in the understanding of their physiological roles in trophoblast invasion. In the present study, we show that the endoglin (ENG) gene is a direct target of the liver X receptor alpha (NR1H3, also known as LXRalpha). ENG, whose gene is highly expressed in syncytiotrophoblasts, is part of the transforming growth factor (TGF) receptor complex that binds several members of the TGFbeta superfamily. In the human placenta, ENG has been shown to be involved in the inhibition of trophoblast invasion. Treatment of human choriocarcinoma JAR cells with T0901317, a synthetic LXR-selective agonist, leads to a significant increase in ENG mRNA and protein levels. Using transfection and electrophoretic mobility shift assays, we demonstrate that LXR (as a heterodimer with the retinoid X receptor) is able to bind the ENG promoter on an LXR response element and mediates the activation of ENG gene expression by LXRalpha in JAR cells. This study suggests a novel mechanism by which LXR may regulate trophoblast invasion in pathological pregnancy such as preeclampsia.
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Affiliation(s)
- Joëlle Henry-Berger
- CNRS UMR6247-GreD, Centre de Recherche en Nutrition Humaine d'Auvergne, Clermont Université, 63177 Aubière, France
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Nezzar H, Chiambaretta F, Marceau G, Blanchon L, Faye B, Dechelotte P, Rigal D, Sapin V. Molecular and metabolic retinoid pathways in the human ocular surface. Mol Vis 2007; 13:1641-50. [PMID: 17893666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
PURPOSE To maintain its integrity, the human ocular surface (cornea and conjunctiva) has an absolute requirement for vitamin A and its active derivatives, the retinoic acids. These retinoids regulate transcriptional levels of target genes through the activation of members of a super-family of ligand-dependant nuclear receptors that feature retinoic acid receptors (RAR) alpha, beta, and gamma as well as retinoid X receptors (RXR) alpha, beta, and gamma. The expression patterns of these receptors have been partial characterized in rabbit, mouse, and human cornea and conjunctiva, but systematic tissue and cellular expression of the three RARs and three RXRs had to be completed at the adult human ocular surface. The first objective of our work was to define their expression patterns in term of genes and proteins for total human conjunctiva, cornea, and the major cell types comprising the adult human ocular surface. The second objective was to demonstrate the presence of different enzymes transforming vitamin A to retinoic acid and the functionality of this metabolic pathway in the corneal epithelium. METHODS Total mRNA was extracted from human total cornea, conjunctiva, corneal epithelial cells (primary culture and established cell line), corneal keratocytes (primary culture), corneal endothelial cells (established cell line), and conjunctival epithelial cells (established cell line) and was submitted to reverse transcription-polymerase chain reaction (RT-PCR) analysis to determine the expression patterns of the RARs and RXRs using specific primers. Immunological staining (via histochemistry and cellular chemistry) experiments were performed to better localize RAR and RXR proteins in the ocular surface at tissue and cellular levels. We also checked mRNA expression of cellular retinol binding proteins (CRBPs) and cellular retinoic acid binding proteins (CRABPs) with the enzymes involved in retinoic acid generation, i.e., alcohol dehydrogenases (ADHs) and retinal dehydrogenases (RALDHs) or degradation (Cyp26 family members). The enzymatic generation of functional retinoids was confirmed using epithelial corneal cells treated with specific inhibitors of retinol metabolism. RESULTS RAR alpha, RAR gamma, and RXR alpha are expressed in the cornea, conjunctiva, and all of their constitutive cells, whereas RXR gamma and RXR beta were never detected in the cornea or conjunctiva. RAR beta was absent in primary cultures of corneal keratinocytes. ADH3, ADH4, dehydrogenase/reductase (SDR family) 4 (DHRS4), dehydrogenase/reductase (SDR family) 9 (DHRS9), RALDH1, and RALDH3 are expressed in the ocular surface, as were the retinoid-binding proteins CRBP1, CRABP1, and CRABP2. Retinol dehydrogenase 4 (RODH4) was only detected in the conjunctiva. Corneal epithelial cells convert retinol into retinoic acid using an enzymatic pathway. CONCLUSIONS For the first time, we have established an exhaustive description of the expressions patterns of RARs, RXRs, ADHs, RALDHs, CRBP, and CRABPs in the human ocular surface. Our results for the human ocular surface demonstrated the presence of all the metabolic and molecular actors of the retinoic acid signaling pathway. We also demonstrated the enzymatic conversion of retinol into active retinoids in the corneal environment.
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Abstract
Retinol (vitamin A) is a fat-soluble nutrient indispensable for a harmonious mammalian gestation. The absence or excess of retinol and its active derivatives [i.e., the retinoic acids (RAs)] can lead to abnormal development of embryonic and extraembryonic (placental) structures. The embryo is unable to synthesize the retinol and is strongly dependent on the maternal delivery of retinol itself or precursors: retinyl esters or carotenoids. Before reaching the embryonic tissue, the retinol or the precursors have to pass through the placental structures. During this placental step, a simple diffusion of retinol can occur between maternal and fetal compartments; but retinol can also be used in situ after its activation into RA(1) or stored as retinyl esters. Using retinol-binding protein knockout model, an alternative way of embryonic retinol supply was described using retinyl esters incorporated into maternal chylomicrons. In the embryo, the principal metabolic event occurring for retinol is its conversion into RAs, the active molecules implicated on the molecular control of embryonic morphogenesis and organogenesis. All these placental and embryonic events of retinol transport and metabolism are highly regulated. Nevertheless, some genetic and/or environmental abnormalities in the transport and/or metabolism of retinol can be related to developmental pathologies during mammalian development.
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Affiliation(s)
- Geoffroy Marceau
- Université d'Auvergne, JE 2447, ARDEMO, F-63000, Clermont-Ferrand, France
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Marceau G, Gallot D, Borel V, Lémery D, Dastugue B, Dechelotte P, Sapin V. Molecular and metabolic retinoid pathways in human amniotic membranes. Biochem Biophys Res Commun 2006; 346:1207-16. [PMID: 16793012 DOI: 10.1016/j.bbrc.2006.06.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2006] [Accepted: 06/03/2006] [Indexed: 10/24/2022]
Abstract
Vitamin A (retinol) and its active derivatives (the retinoids) are essential for the growth and development of the mammalian fetus and placenta. The amniotic membranes are extra-embryonic structures that are indispensable for normal gestation in mammals. Although placental involvement of retinoids is clearly established, little is known about the roles of retinoids for the associated amniotic membranes. The aim of this study was to define the metabolic and molecular pathways of retinoic signaling in human fetal membranes. The expression of retinoid receptors (RARalpha, beta and RXRalpha, beta) was established at transcript and protein levels. Enzymes involved in retinoic acid generation were also detected. The enzymatic generation of functional retinoids was confirmed using specific inhibitors of retinol metabolism. Finally, the functionality of retinoid pathways was demonstrated by inducing established retinoid target gene expression. Our results clearly demonstrated that the molecular and metabolic actors of retinoic signaling pathways are functional in human fetal membranes.
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Affiliation(s)
- Geoffroy Marceau
- Université d'Auvergne, JE 2447, ARDEMO, F-63000 Clermont-Ferrand, France
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Blanchon L, Nores R, Gallot D, Marceau G, Borel V, Yang VW, Bocco JL, Lémery D, Panzetta-Dutari G, Sapin V. Activation of the human pregnancy-specific glycoprotein PSG-5 promoter by KLF4 and Sp1. Biochem Biophys Res Commun 2006; 343:745-53. [PMID: 16563348 DOI: 10.1016/j.bbrc.2006.03.032] [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] [Received: 03/02/2006] [Accepted: 03/03/2006] [Indexed: 11/17/2022]
Abstract
Pregnancy-specific glycoproteins (PSGs) are major placental proteins thought to be essential for the maintenance of gestation. Little is known about the regulation of expression of the 11 genes encoding these proteins. It was previously demonstrated that Krüppel-like factor 6 (KLF6) and specific-protein 1 (Sp1) bind to conserved sequence within the PSG-5 gene promoter. Informatics analysis revealed the presence of one potential binding site for Krüppel-like factor 4 (KLF4), in the PSG-5 promoter, suggesting a potential transcriptional regulator role for KLF4. Using gene promoter-reporter transfections and X-ChIP assays, we demonstrated that KLF4 is an activator of the PSG-5 promoter by binding to a KLF consensus like binding which includes the Core Promoter Element region (-147/-140). Furthermore, we used previous data showing the binding of Sp1 transcription factor to a GT-box (-443/-437) and co-transfection assays with KLF4 and Sp1 to demonstrate the strong synergic activity of these two factors on the PSG-5 promoter.
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Affiliation(s)
- Loïc Blanchon
- INSERM U.384, Laboratoire de Biochimie, Faculté de Médecine, F-63000 Clermont-Ferrand, France
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Chiambaretta F, Nakamura H, De Graeve F, Sakai H, Marceau G, Maruyama Y, Rigal D, Dastugue B, Sugar J, Yue BYJT, Sapin V. Kruppel-like factor 6 (KLF6) affects the promoter activity of the alpha1-proteinase inhibitor gene. Invest Ophthalmol Vis Sci 2006; 47:582-90. [PMID: 16431954 DOI: 10.1167/iovs.05-0551] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Keratoconus is a progressive disease that thins and scars the cornea. In keratoconus corneas, levels of degradative enzymes, including lysosomal acid phosphatase (LAP) and cathepsin B, are elevated, and those of inhibitors alpha1-proteinase inhibitor (alpha1-PI) and alpha2-macroglobulin (alpha2-M) are reduced. The present study explored the possible involvement in keratoconus of Krüppel-like factor 6 (KLF6), a transcription factor previously described to be essential for the integrity of the corneal epithelium. The transcript and proteins level of KLF6 and its action in regulating the genes affected in keratoconus were examined in this study. METHODS Semiquantitative RT-PCR, Western blot analysis, immunofluorescence and in situ hybridization were used to investigate the expression of KLF6 mRNA and protein in normal and keratoconus corneas. Modulation by KLF6 of the promoter activity of alpha1-PI, LAP, cathepsin B, and alpha2-M genes was studied after transient transfection of KLF6 expression plasmid into corneal epithelial cells using promoter-reporter gene assays. Chromatin immunoprecipitation (ChIP) assays were performed to confirm the interactions between KLF6 and promoters of the genes affected in keratoconus. RESULTS A global increased expression of the transcription factor KLF6 in terms of mRNAs and proteins was observed in total cornea and/or the epithelium in a substantial number of the keratoconus specimens. The promoter activity of the human alpha1-PI gene was suppressed by expression of KLF6 in corneal epithelial cells. The ChIP assay confirmed a physical interaction between KLF6 and the alpha1-PI promoter. CONCLUSIONS Transcription factor KLF6 downregulates the alpha1-PI gene in corneal epithelial cells and may thereby be involved in keratoconus.
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Affiliation(s)
- Frédéric Chiambaretta
- Department of Ophthalmology, University Hospital, Centre Hospitalier Universitaire (CHU), Clermont-Ferrand, France
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Gallot D, Marceau G, Laurichesse-Delmas H, Vanlieferinghen P, Dechelotte PJ, Lemery D, Sapin V. The Changes in Angiogenic Gene Expression in Recurrent Multiple Chorioangiomas. Fetal Diagn Ther 2006; 22:161-8. [PMID: 17228150 DOI: 10.1159/000098708] [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] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To assess the messenger ribonucleic acid expression in placental tissue of growth factors, cytokines, angiogenic and anti-angiogenic factors in one case of recurrent multiple chorioangiomas. METHODS Complementary deoxyribonucleic acid array analysis was performed on the affected placentae and on normal placentaes (controls) to compare messenger ribonucleic acid levels of 96 genes involved in angiogenesis. RESULTS Eleven genes presented more than two-fold alteration in expression levels: undetectable (angiopoietin 1, osteonectin, tyrosine kinase endothelial, neuropilin 1), decreased (transcription growth factor beta receptor 3, tissue inhibitor of metalloproteinase type 2, EGF receptor, integrin-alpha V, tyrosine kinase vascular endothelial growth factor receptor 2), increased (angiopoietin 2, osteopontin). CONCLUSIONS We illustrated the complexity of angiogenic disruption in recurrent multiple chorioangiomas leading to the difficulty to propose a single candidate gene to explain this pathology.
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Affiliation(s)
- Denis Gallot
- CHU Clermont-Ferrand, Foetal Maternal Medicine Unit, Federation of Gynaecology and Obstetrics, Maternité Hôtel-Dieu, Clermont-Ferrand, France.
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Gallot D, Marceau G, Coste K, Hadden H, Robert-Gnansia E, Laurichesse H, Déchelotte PJ, Labbé A, Dastugue B, Lémery D, Sapin V. Congenital diaphragmatic hernia: a retinoid-signaling pathway disruption during lung development? ACTA ACUST UNITED AC 2005; 73:523-31. [PMID: 15981190 DOI: 10.1002/bdra.20151] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Congenital diaphragmatic hernia (CDH) usually occurs sporadically. The prognosis remains poor, with a 50% perinatal mortality rate. Most deaths result from hypoxemia due to lung hypoplasia and abnormal development of pulmonary vasculature that results in persistent pulmonary hypertension. Our current understanding of the pathogenesis of CDH is based on an assumption linking herniation of abdominal viscera into the thorax with compression of the developing lung. Pulmonary hypoplasia, however, can also result from reduced distension of the developing lung secondary to impaired fetal breathing movements. Moreover, a nitrofen-induced CDH model shows that lung hypoplasia precedes the diaphragmatic defect, leading to a "dual-hit hypothesis." Recent data reveal the role of a retinoid-signaling pathway disruption in the pathogenesis of CDH. We describe the clinical and epidemiological aspects of human CDH, the metabolic and molecular aspects of the retinoid-signaling pathway, and the implications of retinoids in the development of the diaphragm and the lung. Finally, we highlight the existing links between CDH and disruption of the retinoid-signaling pathway, which may suggest an eventual use of retinoids in the treatment of CDH.
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Affiliation(s)
- Denis Gallot
- Maternal Fetal Medicine Unit, Maternité Hôtel-Dieu, Centre Hospitalier Universitaire, Clermont-Ferrand, France
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Nezzar H, Chiambaretta F, Marceau G, Dastugue B, Rigal D, Sapin V. 043 Analyse moléculaire et métabolique de la voie de signalisation des rétinoïdes au niveau de la surface oculaire humaine. J Fr Ophtalmol 2005. [DOI: 10.1016/s0181-5512(05)74439-9] [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: 10/22/2022]
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