1
|
Mohammedi K, Bertherat J, Raverot G, Drui D, Reznik Y, Castinetti F, Chanson P, Fafin M, Brossaud J, Tabarin A. Evidence of Persistent Mild Hypercortisolism in Patients Medically Treated for Cushing Disease: the Haircush Study. J Clin Endocrinol Metab 2023; 108:e963-e970. [PMID: 37144820 DOI: 10.1210/clinem/dgad251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/06/2023]
Abstract
CONTEXT Cortisol-lowering drugs may not restore a normal cortisol secretion in Cushing disease (CD). OBJECTIVE This work aimed to assess the long-term cortisol exposure in medically treated CD patients using hair-cortisol (HF) and hair-cortisone (HE) measurement. METHODS This multicenter prospective study included 3 groups of female patients: CushMed = 16 treated with a stable cortisol-lowering drug dosage and normal urinary free cortisol (UFC); CushSurg = 13 cured by pituitary surgery; CushBla = 15 receiving stable recommended doses of hydrocortisone following bilateral adrenalectomy. Patients were evaluated for 3 months with their usual treatments. Two late-night saliva and 24-hour urine samples were collected monthly in CushMed, and at study end in CushSurg and CushBla patients. A 3-cm hair sample was collected at study end from all patients. Main outcome measures included clinical score and centralized measurement of UFC, late-night salivary cortisol (LNSF), late-night salivary cortisone (LNSE), HE, HF. RESULTS Despite having almost all UFCs normalized, CushMed patients exhibited increased HE as compared to CushSurg controls (P = .003). CushMed patients also had increased clinical score (P = .001), UFC (P = .03), LNSF, LNSE (P = .0001), and variability in the latter parameters (P = .004). CushBla patients had increased HF and HE, contrasting with LNSEs similar to CushSurg patients. Six of 15 CushMed patients exhibited increased HE concentrations and had increased antihypertensive drug dosage compared to CushMed patients with normal HE (P = .05). CONCLUSION Despite normalized UFCs, a subset of medically treated CD patients displays an altered circadian rhythm of serum cortisol. A single HE measurement identifies chronic mild persistent hypercortisolism and could replace multiple saliva analyzes to monitor medical treatments in CD patients once UFC is normalized.
Collapse
Affiliation(s)
- Kamel Mohammedi
- Department of Endocrinology, French Reference Center for Adrenal Cancer, EURACAN European Expert Center on Rare Neuroendocrine Tumors, Hôpital Haut-Lévèque, CHU and University of Bordeaux, F-33604 Pessac, France
| | - Jerome Bertherat
- Department of Endocrinology, French Reference Center for Rare Adrenal Disorders, Hôpital Cochin, Université Paris Cité, Institut Cochin, Inserm U1016, CNRS UMR8104, F-75014, Paris, France
| | - Gerald Raverot
- Department of Endocrinology, French Reference Center for Rare Pituitary Diseases HYPO, Hospices Civils de Lyon and Inserm U1052, CNRS UMR5286, Claude Bernard Lyon 1 University, Cancer Research Center of Lyon, F-69001, Lyon, France
| | - Delphine Drui
- Department of Endocrinology and Institut du thorax, CHU de Nantes, F-44000 Nantes, France
| | - Yves Reznik
- Department of Endocrinology and Diabetology, CHU Côte de Nacre, F-14033 Caen, France
| | - Frederic Castinetti
- Department of Endocrinology, Assistance Publique-Hopitaux de Marseille, French Reference Center for Rare Pituitary Diseases, EURACAN European Expert Center on Rare Pituitary Tumors, La Conception Hospital, Aix Marseille University, F-13385, Marseille, France
| | - Philippe Chanson
- Department of Endocrinology, Reference Center for Rare Pituitary Diseases HYPO, CHU Bicêtre, F-94270 Le Kremlin-Bicêtre, France
| | - Manon Fafin
- Department of Endocrinology, French Reference Center for Adrenal Cancer, EURACAN European Expert Center on Rare Neuroendocrine Tumors, Hôpital Haut-Lévèque, CHU and University of Bordeaux, F-33604 Pessac, France
| | - Julie Brossaud
- Laboratory of Hormonology and Tumor Markers, Nutrition and Integrated Neurobiology Laboratory, UMR 1286, CHU de Bordeaux, F-33300, Bordeaux, France
| | - Antoine Tabarin
- Department of Endocrinology, French Reference Center for Adrenal Cancer, EURACAN European Expert Center on Rare Neuroendocrine Tumors, Hôpital Haut-Lévèque, CHU and University of Bordeaux, F-33604 Pessac, France
| |
Collapse
|
2
|
Brossaud J, Bosch-Bouju C, Marissal-Arvy N, Campas-Lebecque MN, Helbling JC, Webster SP, Walker BR, Fioramonti X, Ferreira G, Barat P, Corcuff JB, Moisan MP. Memory deficits in a juvenile rat model of type 1 diabetes are due to excess 11β-HSD1 activity, which is upregulated by high glucose concentrations rather than insulin deficiency. Diabetologia 2023; 66:1735-1747. [PMID: 37300580 DOI: 10.1007/s00125-023-05942-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 03/28/2023] [Indexed: 06/12/2023]
Abstract
AIMS/HYPOTHESIS Children with diabetes may display cognitive alterations although vascular disorders have not yet appeared. Variations in glucose levels together with relative insulin deficiency in treated type 1 diabetes have been reported to impact brain function indirectly through dysregulation of the hypothalamus-pituitary-adrenal axis. We have recently shown that enhancement of glucocorticoid levels in children with type 1 diabetes is dependent not only on glucocorticoid secretion but also on glucocorticoid tissue concentrations, which is linked to 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) activity. Hypothalamus-pituitary-adrenal axis dysfunction and memory alteration were further dissected in a juvenile rat model of diabetes showing that excess 11β-HSD1 activity within the hippocampus is associated with hippocampal-dependent memory deficits. Here, to investigate the causal relationships between diabetes, 11β-HSD1 activity and hippocampus-dependent memory deficits, we evaluated the beneficial effect of 11β-HSD1 inhibition on hippocampal-related memory in juvenile diabetic rats. We also examined whether diabetes-associated enhancement of hippocampal 11β-HSD1 activity is due to an increase in brain glucose concentrations and/or a decrease in insulin signalling. METHODS Diabetes was induced in juvenile rats by daily i.p. injection of streptozotocin for 2 consecutive days. Inhibition of 11β-HSD1 was obtained by administrating the compound UE2316 twice daily by gavage for 3 weeks, after which hippocampal-dependent object location memory was assessed. Hippocampal 11β-HSD1 activity was estimated by the ratio of corticosterone/dehydrocorticosterone measured by LC/MS. Regulation of 11β-HSD1 activity in response to changes in glucose or insulin levels was determined ex vivo on acute brain hippocampal slices. The insulin regulation of 11β-HSD1 was further examined in vivo using virally mediated knockdown of insulin receptor expression specifically in the hippocampus. RESULTS Our data show that inhibiting 11β-HSD1 activity prevents hippocampal-related memory deficits in diabetic juvenile rats. A significant increase (53.0±9.9%) in hippocampal 11β-HSD1 activity was found in hippocampal slices incubated in high glucose conditions (13.9 mmol/l) vs normal glucose conditions (2.8 mmol/l) without insulin. However, 11β-HSD1 activity was not affected by variations in insulin concentration either in the hippocampal slices or after a decrease in hippocampal insulin receptor expression. CONCLUSIONS/INTERPRETATION Together, these data demonstrate that an increase in 11β-HSD1 activity contributes to memory deficits observed in juvenile diabetic rats and that an excess of hippocampal 11β-HSD1 activity stems from high glucose levels rather than insulin deficiency. 11β-HSD1 might be a therapeutic target for treating cognitive impairments associated with diabetes.
Collapse
Affiliation(s)
- Julie Brossaud
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeurO, UMR 1286, Bordeaux, France.
- CHU Bordeaux, Nuclear Medicine, Pessac, France.
| | | | | | | | | | - Scott P Webster
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - Brian R Walker
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Xavier Fioramonti
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeurO, UMR 1286, Bordeaux, France
| | - Guillaume Ferreira
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeurO, UMR 1286, Bordeaux, France
| | - Pascal Barat
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeurO, UMR 1286, Bordeaux, France
- CHU Bordeaux, Pediatric Endocrinology and DiaBEA Unit, Hôpital des Enfants, Bordeaux, France
| | - Jean-Benoît Corcuff
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeurO, UMR 1286, Bordeaux, France
- CHU Bordeaux, Nuclear Medicine, Pessac, France
| | - Marie-Pierre Moisan
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeurO, UMR 1286, Bordeaux, France
| |
Collapse
|
3
|
Pouchieu C, Pourtau L, Brossaud J, Gaudout D, Corcuff JB, Capuron L, Castanon N, Philip P. Acute Effect of a Saffron Extract (Safr'Inside TM) and Its Main Volatile Compound on the Stress Response in Healthy Young Men: A Randomized, Double Blind, Placebo-Controlled, Crossover Study. Nutrients 2023; 15:2921. [PMID: 37447245 DOI: 10.3390/nu15132921] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/14/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
According to animal studies, saffron and its main volatile compound safranal may reduce biological and behavioral signs of acute stress. However, little is known about its impact in humans. This study investigated the acute effect of a saffron extract and safranal on the biological and psychological stress responses in healthy men experiencing a laboratory stress procedure. In this double-blind, placebo-controlled, randomized, cross-over study, 19 volunteers aged 18-25 received a single dose of 30 mg saffron extract (Safr'InsideTM), 0.06 mg synthetic safranal, or a placebo on three visits separated by a 28-day washout. Thirteen minutes after administration, participants were exposed to the Maastricht acute stress test (MAST). Salivary cortisol and cortisone were collected from 15 min before the MAST (and pre-dose), 3 min before the MAST, and then 15, 30, 45, 60, and 75 min after the MAST, and stress and anxiety were measured using visual analogic scales. Compared to the placebo, stress and anxiety were significantly toned down after Safranal and Safr'InsideTM administration and coupled with a delay in the times to peak salivary cortisol and cortisone concentrations (p < 0.05). Safr'InsideTM and its volatile compound seem to improve psychological stress response in healthy men after exposure to a lab-based stressor and may modulate the biological stress response.
Collapse
Affiliation(s)
| | - Line Pourtau
- Activ'Inside, F-33750 Beychac et Caillau, France
| | - Julie Brossaud
- Hormone Laboratory, Nuclear Medicine, CHU Bordeaux, UMR INRA 1286, University Bordeaux, F-33000 Bordeaux, France
| | | | - Jean-Benoit Corcuff
- Hormone Laboratory, Nuclear Medicine, CHU Bordeaux, UMR INRA 1286, University Bordeaux, F-33000 Bordeaux, France
| | - Lucile Capuron
- INRAE, Nutrition and Integrative Neurobiology (NutriNeuro), Bordeaux University, UMR 1286, F-33000 Bordeaux, France
| | - Nathalie Castanon
- INRAE, Nutrition and Integrative Neurobiology (NutriNeuro), Bordeaux University, UMR 1286, F-33000 Bordeaux, France
| | - Pierre Philip
- Pôle Neurosciences Cliniques, Centre Hospitalier Universitaire de Bordeaux, F-33076 Bordeaux, France
- Sommeil, Addiction et NeuroPSYchiatrie, Bordeaux University, CNRS, SANPSY, UMR 6033, F-33000 Bordeaux, France
- Centre d'Investigation Clinique Bordeaux, INSERM CIC 1401, Centre Hospitalier Universitaire de Bordeaux, F-33000 Bordeaux, France
| |
Collapse
|
4
|
Brossaud J, Charret L, De Angeli D, Haissaguerre M, Ferriere A, Puerto M, Gatta-Cherifi B, Corcuff JB, Tabarin A. Hair cortisol and cortisone measurements for the diagnosis of overt and mild Cushing's syndrome. Eur J Endocrinol 2021; 184:445-454. [PMID: 33449913 DOI: 10.1530/eje-20-1127] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 01/15/2021] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Hair cortisol (HF) and cortisone (HE) measurements reflect tissular exposure to cortisol over months and are increased in overt Cushing's syndrome (CS). No data is available in mild CS. We compared the diagnostic performance of HF and HE between patients with overt or mild CS. DESIGN Single centre retrospective study. METHODS HF&HE were measured by LC-MS/MS in 48 consecutive adult females with Cushing's disease (CD), ectopic ACTH syndrome, secreting adenomas and carcinomas, and adrenal incidentalomas. All had impaired dexamethasone suppression tests. Overt CS (n = 25) was diagnosed in front of specific symptoms, a mean UFC (>1.5 ULN) and increased midnight serum cortisol or salivary cortisol. Mild CS (n = 23) was diagnosed in patients lacking specific symptoms and displaying at least one additional biological abnormality including mildly increased UFC (≤1.5 ULN), increased midnight serum cortisol or salivary cortisol and suppressed plasma ACTH in patients with adrenal tumours. In this study, 84 healthy subjects and obese patients served as controls. RESULTS HF and HE showed roughly similar performance in overt CS (92 and 100% sensitivity, 91 and 99% specificity, respectively). HF and HE were lower in mild CS but higher than in controls (P < 0.01). HE was correlated with midnight serum cortisol (P < 0.02) and volume of adrenal incidentalomas (P < 0.04) but not with UFC. HF and HE had 59% and 68% sensitivity, and 79 and 94% specificity, respectively, for the diagnosis of mild CS. Contrary to UFC, both HF and HE were in the range of overt CS in 11/23 patients with mild CS. Patients with mild CS and increased HE required more antihypertensive treatments and showed worser lipid profiles than patients with normal HE. CONCLUSIONS HF and HE measurement performed better in overt than in mild CS but is a useful adjunct to diagnose mild CS and to identify adrenocortical incidentalomas responsible for excessive cortisol exposure.
Collapse
Affiliation(s)
- Julie Brossaud
- Department of Nuclear Medicine, University Hospital of Bordeaux, Bordeaux, France
- Nutrition et Neurobiologie Intégrée, University of Bordeaux, Bordeaux, France
| | - Léa Charret
- Department of Endocrinology, Diabetes and Nutrition, CHU of Bordeaux and University of Bordeaux, France
| | - Delia De Angeli
- Department of Radiology, IRCCS Policlinico San Matteo Foundation, Pavia, Italy
- Department of Clinical‑Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
| | - Magalie Haissaguerre
- Department of Endocrinology, Diabetes and Nutrition, CHU of Bordeaux and University of Bordeaux, France
| | - Amandine Ferriere
- Department of Endocrinology, Diabetes and Nutrition, CHU of Bordeaux and University of Bordeaux, France
| | - Marie Puerto
- Department of Endocrinology, Diabetes and Nutrition, CHU of Bordeaux and University of Bordeaux, France
| | - Blandine Gatta-Cherifi
- Department of Endocrinology, Diabetes and Nutrition, CHU of Bordeaux and University of Bordeaux, France
| | - Jean-Benoît Corcuff
- Department of Nuclear Medicine, University Hospital of Bordeaux, Bordeaux, France
- Nutrition et Neurobiologie Intégrée, University of Bordeaux, Bordeaux, France
| | - Antoine Tabarin
- Department of Endocrinology, Diabetes and Nutrition, CHU of Bordeaux and University of Bordeaux, France
| |
Collapse
|
5
|
Jackson PA, Forster J, Khan J, Pouchieu C, Dubreuil S, Gaudout D, Moras B, Pourtau L, Joffre F, Vaysse C, Bertrand K, Abrous H, Vauzour D, Brossaud J, Corcuff JB, Capuron L, Kennedy DO. Effects of Saffron Extract Supplementation on Mood, Well-Being, and Response to a Psychosocial Stressor in Healthy Adults: A Randomized, Double-Blind, Parallel Group, Clinical Trial. Front Nutr 2021; 7:606124. [PMID: 33598475 PMCID: PMC7882499 DOI: 10.3389/fnut.2020.606124] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [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: 09/14/2020] [Accepted: 12/21/2020] [Indexed: 01/30/2023] Open
Abstract
Anxiety, stress, and low mood are closely related and may contribute to depressive symptoms. Among non-pharmacological solutions to improve subclinical mood symptoms and resilience to stress, natural products such as saffron—identified as promising following preliminary beneficial effects in major depressive disorder—represent a relevant strategy. This study aimed to assess the efficacy of 8 weeks' supplementation with 30 mg standardized saffron extract on emotional well-being in healthy adults with subclinical feelings of low mood and anxiety and/or stress and evaluate the acute effect of saffron in response to a lab-based psychosocial stressor. The study adopted a double-blind, randomized, parallel groups design in which 56 healthy male and female individuals (18–54 years) received either a saffron extract or a placebo for 8 weeks. Chronic effects of saffron on subjective anxiety, stress, and depressive feelings were assessed using a questionnaire battery [including Profile of Mood State-2, (POMS)] and acute effects in response to a lab-based psychosocial stressor were measured through psychological and physiological parameters. Urinary crocetin levels were quantified. Participants who received the saffron extract reported reduced depression scores and improved social relationships at the end of the study. Urinary crocetin levels increased significantly with saffron supplementation and were correlated with change in depression scores. The typical stress-induced decrease in heart rate variability (HRV) during exposure to the stressor was attenuated following acute saffron intake. Saffron extract appears to improve subclinical depressive symptoms in healthy individuals and may contribute to increased resilience against the development of stress-related psychiatric disorders. Clinical trials number: NCT03639831.
Collapse
Affiliation(s)
- Philippa A Jackson
- Brain Performance and Nutrition Research Centre, Northumbria University, Newcastle upon Tyne, United Kingdom
| | - Joanne Forster
- Brain Performance and Nutrition Research Centre, Northumbria University, Newcastle upon Tyne, United Kingdom
| | - Julie Khan
- Brain Performance and Nutrition Research Centre, Northumbria University, Newcastle upon Tyne, United Kingdom
| | | | | | | | | | | | - Florent Joffre
- ITERG, Nutrition-Health & Lipid Biochemistry Department, Canéjan, France
| | - Carole Vaysse
- ITERG, Nutrition-Health & Lipid Biochemistry Department, Canéjan, France
| | - Karène Bertrand
- ITERG, Nutrition-Health & Lipid Biochemistry Department, Canéjan, France
| | - Hélène Abrous
- ITERG, Nutrition-Health & Lipid Biochemistry Department, Canéjan, France
| | - David Vauzour
- Faculty of Medicine and Health Sciences, Biomedical Research Centre, Norwich Medical School, University of East Anglia, Norwich, United Kingdom
| | - Julie Brossaud
- Hormone Laboratory, Nuclear Medicine, CHU Bordeaux, UMR INRA 1286, University Bordeaux, Bordeaux, France
| | - Jean Benoit Corcuff
- Hormone Laboratory, Nuclear Medicine, CHU Bordeaux, UMR INRA 1286, University Bordeaux, Bordeaux, France
| | - Lucile Capuron
- Univ. Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, Bordeaux, France
| | - David O Kennedy
- Brain Performance and Nutrition Research Centre, Northumbria University, Newcastle upon Tyne, United Kingdom
| |
Collapse
|
6
|
Brossaud J, Corcuff JB, Vautier V, Bergeron A, Valade A, Lienhardt A, Moisan MP, Barat P. Altered Cortisol Metabolism Increases Nocturnal Cortisol Bioavailability in Prepubertal Children With Type 1 Diabetes Mellitus. Front Endocrinol (Lausanne) 2021; 12:742669. [PMID: 34970219 PMCID: PMC8712331 DOI: 10.3389/fendo.2021.742669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 11/22/2021] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE Disturbances in the activity of the hypothalamus-pituitary-adrenal axis could lead to functional alterations in the brain of diabetes patients. In a later perspective of investigating the link between the activity of the hypothalamus-pituitary-adrenal axis and the developing brain in children with diabetes, we assessed here nocturnal cortisol metabolism in prepubertal children with type 1 diabetes mellitus (T1DM). METHODS Prepubertal patients (aged 6-12 years) diagnosed with T1DM at least 1 year previously were recruited, along with matched controls. Nocturnal urine samples were collected, with saliva samples taken at awakening and 30 minutes after awakening. All samples were collected at home over 5 consecutive days with no detectable nocturnal hypoglycaemia. The State-Trait Anxiety Inventory (trait scale only) and Child Depression Inventory were also completed. Glucocorticoid metabolites in the urine, salivary cortisol (sF) and cortisone (sE) were measured by liquid chromatography-tandem mass spectrometry. Metabolic data were analysed by logistic regression, adjusting for sex, age, BMI and trait anxiety score. RESULTS Urine glucocorticoid metabolites were significantly lower in T1DM patients compared to controls. 11β-hydroxysteroid dehydrogenase type 1 activity was significantly higher, while 11β-hydroxysteroid dehydrogenase type 2, 5(α+β)-reductase and 5α-reductase levels were all lower, in T1DM patients compared to controls. There was a significant group difference in delta sE level but not in delta sF level between the time of awakening and 30 minutes thereafter. CONCLUSIONS Our findings suggest that altered nocturnal cortisol metabolism and morning HPA axis hyperactivity in children with T1DM leads to greater cortisol bioavailability and lower cortisol production as a compensatory effect. This altered nocturnal glucocorticoid metabolism when cortisol production is physiologically reduced and this HPA axis hyperactivity question their impact on brain functioning.
Collapse
Affiliation(s)
- Julie Brossaud
- Nuclear Medicine, Hospital of Bordeaux, Pessac, France
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, Bordeaux, France
| | - Jean-Benoît Corcuff
- Nuclear Medicine, Hospital of Bordeaux, Pessac, France
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, Bordeaux, France
| | - Vanessa Vautier
- Pediatric Endocrinology and DiaBEA Unit, Hôpital des Enfants, Hospital of Bordeaux, Bordeaux, France
| | - Aude Bergeron
- Pediatric Endocrinology and DiaBEA Unit, Hôpital des Enfants, Hospital of Bordeaux, Bordeaux, France
| | | | | | | | - Pascal Barat
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, Bordeaux, France
- Pediatric Endocrinology and DiaBEA Unit, Hôpital des Enfants, Hospital of Bordeaux, Bordeaux, France
- *Correspondence: Pascal Barat,
| |
Collapse
|
7
|
Biyong EF, Alfos S, Dumetz F, Helbling JC, Aubert A, Brossaud J, Foury A, Moisan MP, Layé S, Richard E, Patterson E, Murphy K, Rea K, Stanton C, Schellekens H, Cryan JF, Capuron L, Pallet V, Ferreira G. Dietary vitamin A supplementation prevents early obesogenic diet-induced microbiota, neuronal and cognitive alterations. Int J Obes (Lond) 2020; 45:588-598. [PMID: 33223517 DOI: 10.1038/s41366-020-00723-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 07/02/2020] [Revised: 09/30/2020] [Accepted: 11/05/2020] [Indexed: 12/25/2022]
Abstract
BACKGROUND Early consumption of obesogenic diets, rich in saturated fat and added sugar, is associated with a plethora of biological dysfunctions, at both peripheral and brain levels. Obesity is also linked to decreased vitamin A bioavailability, an essential molecule for brain plasticity and memory function. METHODS Here we investigated in mice whether dietary vitamin A supplementation (VAS) could prevent some of the metabolic, microbiota, neuronal and cognitive alterations induced by obesogenic, high-fat and high-sugar diet (HFSD) exposure from weaning to adulthood, i.e. covering periadolescent period. RESULTS As expected, VAS was effective in enhancing peripheral vitamin A levels as well as hippocampal retinoic acid levels, the active metabolite of vitamin A, regardless of the diet. VAS attenuated HFSD-induced excessive weight gain, without affecting metabolic changes, and prevented alterations of gut microbiota α-diversity. In HFSD-fed mice, VAS prevented recognition memory deficits but had no effect on aversive memory enhancement. Interestingly, VAS alleviated both HFSD-induced higher neuronal activation and lower glucocorticoid receptor phosphorylation in the hippocampus after training. CONCLUSION Dietary VAS was protective against the deleterious effects of early obesogenic diet consumption on hippocampal function, possibly through modulation of the gut-brain axis.
Collapse
Affiliation(s)
- Essi F Biyong
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Serge Alfos
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Fabien Dumetz
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France.,INRAE, MycSa, UMR 1264, Villenave d'Ornon Cedex, France
| | - Jean-Christophe Helbling
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Agnès Aubert
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Julie Brossaud
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Aline Foury
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Marie-Pierre Moisan
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Sophie Layé
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Emmanuel Richard
- Université de Bordeaux, INSERM, U1035, CHU Bordeaux, Place Amélie Raba Léon, 33000, Bordeaux, France
| | | | - Kiera Murphy
- Teagasc Food Research Centre, Moorepark, Co, Cork, Ireland
| | - Kieran Rea
- APC Microbiome Ireland & Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
| | | | - Harriët Schellekens
- APC Microbiome Ireland & Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
| | - John F Cryan
- APC Microbiome Ireland & Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
| | - Lucile Capuron
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Véronique Pallet
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France
| | - Guillaume Ferreira
- Université de Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, UFR de Pharmacie, 146 Rue Léo Saignat, 33076, Bordeaux Cedex, France.
| |
Collapse
|
8
|
Corcuff JB, Ducint D, Brossaud J. What do you need to know about mass spectrometry? A brief guide for endocrinologists. Ann Endocrinol (Paris) 2020; 81:118-123. [PMID: 32340850 DOI: 10.1016/j.ando.2020.03.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 03/06/2020] [Indexed: 10/24/2022]
Abstract
In routine hormonology, liquid chromatography mass spectrometry (LCMS) is now an established technique for androgen, urinary cortisol and metanephrine assay. It has the undeniable advantage of great analytical specificity, but with sensitivity that clearly depends on financial investment in a very high-end spectrometer. We describe the general principles of LCMS and the routine applications so far developed in hormonology. The purpose is to familiarise endocrinologists with the techniques under development and their pros and cons.
Collapse
Affiliation(s)
- Jean-Benoît Corcuff
- Laboratoire d'hormonologie, hôpital Haut-Lévêque, CHU de Bordeaux, 33604 Pessac, France; Nutrition et neurobiologie intégrée, UMR 1286, université de Bordeaux, 33076 Bordeaux, France; Groupe de biologie spécialisée, societé française de medecine nucléaire, 5, rue Ponscarme 75013, Paris, France.
| | - Dominique Ducint
- Plateau technique de mesures physiques, hôpital Pellegrin, CHU de Bordeaux, 33600 Bordeaux, France.
| | - Julie Brossaud
- Laboratoire d'hormonologie, hôpital Haut-Lévêque, CHU de Bordeaux, 33604 Pessac, France; Nutrition et neurobiologie intégrée, UMR 1286, université de Bordeaux, 33076 Bordeaux, France; Groupe de biologie spécialisée, societé française de medecine nucléaire, 5, rue Ponscarme 75013, Paris, France.
| |
Collapse
|
9
|
Kouzi F, Zibara K, Bourgeais J, Picou F, Gallay N, Brossaud J, Dakik H, Roux B, Hamard S, Le Nail LR, Hleihel R, Foucault A, Ravalet N, Rouleux-Bonnin F, Gouilleux F, Mazurier F, Bene MC, Akl H, Gyan E, Domenech J, El-Sabban M, Herault O. Disruption of gap junctions attenuates acute myeloid leukemia chemoresistance induced by bone marrow mesenchymal stromal cells. Oncogene 2019; 39:1198-1212. [PMID: 31649334 PMCID: PMC7002301 DOI: 10.1038/s41388-019-1069-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 10/07/2019] [Accepted: 10/10/2019] [Indexed: 01/09/2023]
Abstract
The bone marrow (BM) niche impacts the progression of acute myeloid leukemia (AML) by favoring the chemoresistance of AML cells. Intimate interactions between leukemic cells and BM mesenchymal stromal cells (BM-MSCs) play key roles in this process. Direct intercellular communications between hematopoietic cells and BM-MSCs involve connexins, components of gap junctions. We postulated that blocking gap junction assembly could modify cell–cell interactions in the leukemic niche and consequently the chemoresistance. The comparison of BM-MSCs from AML patients and healthy donors revealed a specific profile of connexins in BM-MSCs of the leukemic niche and the effects of carbenoxolone (CBX), a gap junction disruptor, were evaluated on AML cells. CBX presents an antileukemic effect without affecting normal BM-CD34+ progenitor cells. The proapoptotic effect of CBX on AML cells is in line with the extinction of energy metabolism. CBX acts synergistically with cytarabine (Ara-C) in vitro and in vivo. Coculture experiments of AML cells with BM-MSCs revealed that CBX neutralizes the protective effect of the niche against the Ara-C-induced apoptosis of leukemic cells. Altogether, these results suggest that CBX could be of therapeutic interest to reduce the chemoresistance favored by the leukemic niche, by targeting gap junctions, without affecting normal hematopoiesis.
Collapse
Affiliation(s)
- Farah Kouzi
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France.,PRASE, DSST, Lebanese University, Beirut, Lebanon
| | - Kazem Zibara
- PRASE, DSST, Lebanese University, Beirut, Lebanon.,Biology Department, Faculty of Sciences, Lebanese University, Beirut, Lebanon
| | - Jerome Bourgeais
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France.,Department of Biological Hematology, Tours University Hospital, Tours, France
| | - Frederic Picou
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France.,Department of Biological Hematology, Tours University Hospital, Tours, France
| | - Nathalie Gallay
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France.,Department of Biological Hematology, Tours University Hospital, Tours, France
| | - Julie Brossaud
- Department of Nuclear Medicine, Bordeaux University Hospital, Pessac, France
| | - Hassan Dakik
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France
| | - Benjamin Roux
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France.,Department of Biological Hematology, Tours University Hospital, Tours, France
| | - Sophie Hamard
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France
| | | | - Rita Hleihel
- Department of Anatomy, Cell Biology, and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon.,Department of Internal Medicine, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Amelie Foucault
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France.,Department of Biological Hematology, Tours University Hospital, Tours, France
| | - Noemie Ravalet
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France.,Department of Biological Hematology, Tours University Hospital, Tours, France
| | - Florence Rouleux-Bonnin
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France
| | - Fabrice Gouilleux
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France
| | - Frederic Mazurier
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France
| | - Marie C Bene
- Department of Biological Hematology, Nantes University Hospital, CRCINA, Nantes, France
| | - Haidar Akl
- PRASE, DSST, Lebanese University, Beirut, Lebanon.,Biology Department, Faculty of Sciences, Lebanese University, Beirut, Lebanon
| | - Emmanuel Gyan
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France.,Department of Hematology and Cell Therapy, Tours University Hospital, Tours, France
| | - Jorge Domenech
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France.,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France.,Department of Biological Hematology, Tours University Hospital, Tours, France
| | - Marwan El-Sabban
- Department of Anatomy, Cell Biology, and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Olivier Herault
- CNRS ERL7001 LNOx "Leukemic Niche & Redox Metabolism", Tours, France. .,EA7501 GICC, University of Tours, Faculty of Medicine, Tours, France. .,Department of Biological Hematology, Tours University Hospital, Tours, France.
| |
Collapse
|
10
|
Marissal-Arvy N, Campas MN, Semont A, Ducroix-Crepy C, Beauvieux MC, Brossaud J, Corcuff JB, Helbling JC, Vancassel S, Bouzier-Sore AK, Touyarot K, Ferreira G, Barat P, Moisan MP. Insulin treatment partially prevents cognitive and hippocampal alterations as well as glucocorticoid dysregulation in early-onset insulin-deficient diabetic rats. Psychoneuroendocrinology 2018; 93:72-81. [PMID: 29702445 DOI: 10.1016/j.psyneuen.2018.04.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/03/2018] [Accepted: 04/15/2018] [Indexed: 12/21/2022]
Abstract
The diagnosis of Type 1 Diabetes (T1D) in ever younger children led us to question the impact of insulin deficiency or chronic hyperglycemia on cerebral development and memory performances. Here, we sought abnormalities in these traits in a model of streptozotocin-induced diabetes in juvenile rats treated or not by insulin. We made the assumption that such alterations would be related, at least in part, to excessive glucocorticoid exposition in hippocampal neurons. We have compared 3 groups of juvenile rats: controls, untreated diabetics and insulin-treated diabetics. Diabetes was induced by streptozotocin (65 mg/kg IP/day, 2 consecutive days), at postnatal days 21 and 22 and a subcutaneous pellet delivering 2 U of insulin/day was implanted in treated diabetic rats 3 days later. Three weeks after diabetes induction, cognitive performances (Y maze, object location and recognition tests), in vivo brain structure (brain volume and water diffusion by structural magnetic resonance imaging), and hippocampal neurogenesis (immunohistochemical labeling) measurements were undertaken. Corticosterone levels were evaluated in plasma under basal and stress conditions, and within hippocampus together with 11β-dehydrocorticosterone to assess 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) activity. The comparison of the three experimental groups revealed that, compared to controls, untreated diabetic rats showed decreased cognitive performances in Y-maze and object location test (p < 0.05), decreased brain and hippocampal microstructure (p < 0.05), and decreased maturation and survival of hippocampal newborn neurons (p < 0.05). These alterations were associated with increased plasma corticosterone at the baseline nadir of its secretion (p < 0.001) and during the recovery phase following a restraint stress (p < 0.001), as well as increased hippocampal corticosterone levels (p < 0.01) and 11β-HSD1 activity (p < 0.05). As untreated diabetic rats, insulin-treated diabetic rats displayed decreased brain volume and water diffusion (p < 0.05 compared to controls) and intermediate memory performances and hippocampal neurogenesis (p value not significant compared to either controls or untreated diabetics). Moreover, they were similar to controls for basal plasma and hippocampal corticosterone and 11β-HSD1 activity but show increased plasma corticosterone during the recovery phase following a restraint stress similar to untreated diabetics (p < 0.001 compared to controls). Thus, insulin did not completely prevent several hippocampal-dependent behavioral and structural alterations induced by diabetes in juvenile rats which may relate to the higher cognitive difficulties encountered in T1D children compared to non-diabetic controls. Although insulin restored basal corticosterone and 11β-HSD1 activity (in hippocampus and plasma), the negative feedback regulation of corticosterone secretion after stress was still impaired in insulin-treated diabetic rats. Further characterization of insulin control on glucocorticoid regulation and availability within hippocampus is awaited.
Collapse
Affiliation(s)
- Nathalie Marissal-Arvy
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France
| | - Marie-Neige Campas
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France; CHU Bordeaux, Unité d'endocrinologie et de diabétologie pédiatrique, Hôpital des Enfants, Place Amélie Rabat-Léon, 33076, Bordeaux, France
| | - Audrey Semont
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France
| | - Céline Ducroix-Crepy
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France
| | - Marie-Christine Beauvieux
- CNRS, Univ. Bordeaux, Centre de Résonance Magnétique des Systèmes Biologiques UMR 5536, 146 rue Leo Saignat, 33076, Bordeaux, France
| | - Julie Brossaud
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France
| | - Jean-Benoit Corcuff
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France
| | - Jean-Christophe Helbling
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France
| | - Sylvie Vancassel
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France
| | - Anne-Karine Bouzier-Sore
- CNRS, Univ. Bordeaux, Centre de Résonance Magnétique des Systèmes Biologiques UMR 5536, 146 rue Leo Saignat, 33076, Bordeaux, France
| | - Katia Touyarot
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France
| | - Guillaume Ferreira
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France
| | - Pascal Barat
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France; CHU Bordeaux, Unité d'endocrinologie et de diabétologie pédiatrique, Hôpital des Enfants, Place Amélie Rabat-Léon, 33076, Bordeaux, France
| | - Marie-Pierre Moisan
- INRA, Univ. Bordeaux, Nutrition and Integrated Neurobiology UMR1286, 146 rue Leo Saignat, 33076, Bordeaux, France.
| |
Collapse
|
11
|
Brossaud J, Leban M, Corcuff JB, Boux de Casson F, Leloupp AG, Masson D, Moal V, Bach-Ngohou K. LC-MSMS assays of urinary cortisol, a comparison between four in-house assays. ACTA ACUST UNITED AC 2018; 56:1109-1116. [DOI: 10.1515/cclm-2017-0806] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 11/30/2017] [Indexed: 12/18/2022]
Abstract
Abstract
Background:
Twenty-four hour urinary free cortisol (UFC) determination can be used for screening and follow-up of Cushing syndrome (CS). As immunoassay methods lack specificity for UFC measurement, the use of high-performance liquid chromatography coupled to mass spectrometer (LC-MSMS) is recommended. The aim of our study was to compare UFC results using four LC-MSMS methods performed in four independent laboratories in order to evaluate interlaboratory agreement.
Methods:
Frozen aliquots of 24-h urine samples (78 healthy volunteers and 20 patients with CS) were sent to four different laboratories for analysis. Following liquid-liquid or solid-liquid extraction, UFC were determined using four different LC-MSMS assay.
Results:
UFC intra- and interassays variation coefficients were lower than 10% for each centre. External quality control results were not significantly different. UFC normal ranges (established from healthy volunteers) were 17–126, 15–134, 12–118 and 27–157 nmol/day, respectively. Classification of UFC from healthy volunteers and patients with CS using a 95th percentile threshold was similar. However, for extreme UFC values (<50 or >270 nmol/day), negative or positive bias was noted.
Conclusions:
Even for highly specific methods such as LC-MSMS, variations of results can be found depending on analytical process. Validation of LC-MSMS methods including determination of the reference range is essential.
Collapse
|
12
|
Brossaud J, Pallet V, Corcuff JB. Vitamin A, endocrine tissues and hormones: interplay and interactions. Endocr Connect 2017; 6:R121-R130. [PMID: 28720593 PMCID: PMC5551430 DOI: 10.1530/ec-17-0101] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [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] [Received: 06/03/2017] [Revised: 07/03/2017] [Accepted: 07/18/2017] [Indexed: 12/12/2022]
Abstract
Vitamin A (retinol) is a micronutrient critical for cell proliferation and differentiation. In adults, vitamin A and metabolites such as retinoic acid (RA) play major roles in vision, immune and brain functions, and tissue remodelling and metabolism. This review presents the physiological interactions of retinoids and endocrine tissues and hormonal systems. Two endocrine systems have been particularly studied. In the pituitary, retinoids targets the corticotrophs with a possible therapeutic use in corticotropinomas. In the thyroid, retinoids interfere with iodine metabolism and vitamin A deficiency aggravates thyroid dysfunction caused by iodine-deficient diets. Retinoids use in thyroid cancer appears less promising than expected. Recent and still controversial studies investigated the relations between retinoids and metabolic syndrome. Indeed, retinoids contribute to pancreatic development and modify fat and glucose metabolism. However, more detailed studies are needed before planning any therapeutic use. Finally, retinoids probably play more minor roles in adrenal and gonads development and function apart from their major effects on spermatogenesis.
Collapse
Affiliation(s)
- Julie Brossaud
- J Brossaud, Nuclear Medicine, University hospital of Bordeaux, Pessac, France
| | - Veronique Pallet
- V Pallet, NutriNeurO-INRA 1286 - Université Bdx 2, University of Bordeaux, Bordeaux, 33076 BORDEAUX , France
| | - Jean-Benoit Corcuff
- J Corcuff, Nuclear Medicine, University hospital of Bordeaux, Pessac, 33604, France
| |
Collapse
|
13
|
Corcuff JB, Chardon L, El Hajji Ridah I, Brossaud J. Urinary sampling for 5HIAA and metanephrines determination: revisiting the recommendations. Endocr Connect 2017; 6:R87-R98. [PMID: 28566493 PMCID: PMC5527357 DOI: 10.1530/ec-17-0071] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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] [Received: 05/03/2017] [Accepted: 05/30/2017] [Indexed: 01/01/2023]
Abstract
CONTEXT Biogenic amines such as 5-hydroxy-indole acetic acid (5HIAA) the main metabolite of serotonin or metanephrines (catecholamines metabolites) are used as biomarkers of neuroendocrine tumours. OBJECTIVE To re-evaluate the recommendations for urinary sampling (preservatives, diet, drugs, etc.) as many of the reported analytical interferences supporting these recommendations are related to obsolete assays. METHODS Bibliographic analysis of old and modern assays concerning preservation, extraction, assay and interferences. RESULTS 5HIAA may degrade as soon as urine is excreted. Thus, acids as preservatives (hydrochloric or acetic acid) have to be immediately added. Care should be taken not to decrease the pH under 2. Urine preservative for metanephrine assays is not mandatory. Diets including serotonin-, tryptophan- and dopamine-rich foods have to be avoided depending on the biomarkers investigated (bananas, plantain, nuts, etc.). Tryptophan-rich over-the-counter formulas have to be prohibited when 5HIAA has to be assayed. Acetaminophen may interfere with electrochemical detection depending on high-pressure liquid chromatography (HPLC) parameters. No interference is known with mass spectrometric assays but with the one described for metanephrines determination. Some drugs interfere however with serotonin and catecholamines secretion and/or metabolism (monoamine oxidase inhibitors, serotonin or dopamine recapture inhibitors, etc.). CONCLUSION Revisited recommendations are provided for the diet, the drugs and the preservatives before HPLC coupled with electrochemical and mass spectrometry assays.
Collapse
Affiliation(s)
- Jean-Benoît Corcuff
- Department of Nuclear MedicineHaut Lévêque Hospital, Pessac, France
- Nutrition et Neurobiologie intégréeUMR 1286, University of Bordeaux, Bordeaux, France
- Groupe de Biologie SpécialiséeSociété Française de Médecine Nucléaire, Paris, France
| | - Laurence Chardon
- Department of BiochemistryEdouard Herriot Hospital, Lyon, France
| | | | - Julie Brossaud
- Department of Nuclear MedicineHaut Lévêque Hospital, Pessac, France
- Nutrition et Neurobiologie intégréeUMR 1286, University of Bordeaux, Bordeaux, France
- Groupe de Biologie SpécialiséeSociété Française de Médecine Nucléaire, Paris, France
| |
Collapse
|
14
|
Brossaud J, Roumes H, Helbling JC, Moisan MP, Pallet V, Ferreira G, Biyong EF, Redonnet A, Corcuff JB. Retinoic acid increases glucocorticoid receptor phosphorylation via cyclin-dependent kinase 5. Mol Cell Neurosci 2017; 82:96-104. [PMID: 28477983 DOI: 10.1016/j.mcn.2017.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 04/25/2017] [Accepted: 05/01/2017] [Indexed: 12/20/2022] Open
Abstract
Glucocorticoid receptor (GR) function is modulated by phosphorylation. As retinoic acid (RA) can activate some cytoplasmic kinases able to phosphorylate GR, we investigated whether RA could modulate GR phosphorylation in neuronal cells in a context of long-term glucocorticoid exposure. A 4-day treatment of dexamethasone (Dex) plus RA, showed that RA potentiated the (Dex)-induced phosphorylation on GR Serine 220 (pSer220GR) in the nucleus of a hippocampal HT22 cell line. This treatment increased the cytoplasmic ratio of p35/p25 proteins, which are major CDK5 cofactors. Roscovitine, a pharmacological CDK5 inhibitor, or a siRNA against CDK5 prevented RA potentiation of GR phosphorylation. Furthermore, roscovitine counter-acted the effect of RA on GR sensitive target proteins such as BDNF or tissue-transglutaminase. These data help understanding the interaction between RA- and glucocorticoid-signalling pathways, both of which have strong influences on the adult brain.
Collapse
Affiliation(s)
- Julie Brossaud
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France; Departments of Nuclear Medicine University Hospital and University of Bordeaux, France.
| | - Hélène Roumes
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | | | - Marie-Pierre Moisan
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | - Véronique Pallet
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | - Guillaume Ferreira
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | - Essi-Fanny Biyong
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | - Anabelle Redonnet
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France
| | - Jean-Benoît Corcuff
- INRA, Nutrition et Neurobiologie Intégrée, UMR 1286, F-33076 Bordeaux, France; Departments of Nuclear Medicine University Hospital and University of Bordeaux, France
| |
Collapse
|
15
|
Barat P, Meiffred MC, Brossaud J, Fuchs D, Corcuff JB, Thibault H, Capuron L. Inflammatory, endocrine and metabolic correlates of fatigue in obese children. Psychoneuroendocrinology 2016; 74:158-163. [PMID: 27627133 DOI: 10.1016/j.psyneuen.2016.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 08/02/2016] [Accepted: 09/07/2016] [Indexed: 02/07/2023]
Abstract
Alterations in endocrine functions and low-grade systemic inflammation represent fundamental characteristics of obesity. These biological systems have been repeatedly linked to fatigue symptoms. The aim of the study was to assess the relationship between fatigue dimensions and metabolic/inflammatory markers in a sample of non-diabetic obese children. The possibility that inflammation-induced alterations in tryptophan metabolism relates to specific dimensions of fatigue was also investigated in a subsample of patients. The study was conducted in 41 obese children, median aged 12 [9-15] years, recruited in a pediatric tertiary center. Three dimensions of fatigue (e.g., general fatigue, sleep/rest, cognitive fatigue) were assessed using the Pediatric Quality of Life Inventory Multidimentional Fatigue Scale. In addition, a principal component analysis was performed to identify fatigue dimensions that were specific to the population under study. This analysis extracted five relevant dimensions corresponding respectively to concentration, energy, self-perceived cognitive efficiency, sleep/rest and motivation/anhedonia. Blood samples were collected for the measurement of inflammatory and metabolic markers, including high sensitivity C-reactive protein (hs-CRP), insulin, uricemia and glycaemia. Tryptophan, kynurenine and neopterin levels were also determined in a subsample of 17 patients. In the whole population under study, cognitive fatigue and reduced motivation/anhedonia were associated with BMI, independently of sex and age. The dimension of reduced motivation/anhedonia was associated with insulin resistance and inflammatory biomarkers. The association with insulin resistance persisted when the extent of fat mass (BMI-SDS) was taken into account. No association was found between tryptophan metabolism and specific dimensions of fatigue, but kynurenine and the kynurenine/tryptophan ratio correlated with insulin and HOMA-IR. These data indicate that insulin resistance in non diabetic obese children is associated with both cognitive fatigue and reduced motivation/anhedonia and with alterations in tryptophan metabolism. Further investigations are needed to determine whether inflammation-induced alterations in tryptophan metabolism is directly or indirectly implicated in insulin resistance and related fatigue.
Collapse
Affiliation(s)
- Pascal Barat
- CHU Bordeaux, Centre Spécialise Obésité, Hopital des Enfants, F-33076 Bordeaux, France; Univ Bordeaux, Nutrition and Integrative Neurobiology, F-33076 Bordeaux, France.
| | - Marie-Claire Meiffred
- CHU Bordeaux, Centre Spécialise Obésité, Hopital des Enfants, F-33076 Bordeaux, France
| | - Julie Brossaud
- Univ Bordeaux, Nutrition and Integrative Neurobiology, F-33076 Bordeaux, France; CHU Bordeaux, Nuclear Medecine, F-33604 Pessac, France
| | - Dietmar Fuchs
- Division of Biological Chemistry, Biocenter Innsbruck Medical University Center for Chemistry and Biomedicine, A-6020 Innsbruck, Austria
| | - Jean-Benoit Corcuff
- Univ Bordeaux, Nutrition and Integrative Neurobiology, F-33076 Bordeaux, France; CHU Bordeaux, Nuclear Medecine, F-33604 Pessac, France
| | - Helene Thibault
- CHU Bordeaux, Centre Spécialise Obésité, Hopital des Enfants, F-33076 Bordeaux, France
| | - Lucile Capuron
- Univ Bordeaux, Nutrition and Integrative Neurobiology, F-33076 Bordeaux, France; INRA, Nutrition and Integrative Neurobiology, F-33076 Bordeaux, France
| |
Collapse
|
16
|
Brossaud J, Ducint D, Corcuff JB. Urinary glucocorticoid metabolites: biomarkers to classify adrenal incidentalomas? Clin Endocrinol (Oxf) 2016; 84:236-243. [PMID: 25571968 DOI: 10.1111/cen.12717] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 11/21/2014] [Revised: 12/10/2014] [Accepted: 01/05/2015] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Total urinary cortisol metabolites represent cortisol production and metabolism. We hypothesized that to assay metabolites could add some information to the one provided by a sole cortisol assay. DESIGN AND PATIENTS We set up an inexpensive multiplex mass spectrometry assay to quantify cortisol metabolites. We investigated 43 patients with benign secreting (AT+) or silent (AT-) adrenal tumours compared to 48 lean (Nl) or 143 obese (Ob) subjects, and to 26 patients with a Cushing's disease (CD). The initial investigation included immunoreactive quantification of urinary free cortisol (UFC). RESULTS Cortisol metabolites were overexcreted in CD but not in Ob subjects. Nl and Ob were thus pooled in a control population (Ctl). Cortisol, tetrahydrocortisol (THF) and tetrahydrocortisone (THE) excretions were significantly increased in AT compared to Ctl subjects, whereas immunoreactive UFC was similar. A logistic regression retaining cortisol, THF, and α- and β-cortolone as significant analytes allowed the construction of a receiver-operating characteristics (ROC) curve significantly better than the curve generated by cortisol alone (area under the curve (AUC) 0·927 vs 0·729, respectively; P < 0·0001). More importantly, although there was no significant difference between Ctl vs AT- subjects for cortisol metabolites, a logistic regression retaining cortisol, allo-THF, and α- and β-cortolone as significant analytes generated a ROC curve performing significantly better than cortisol alone (AUC 0·910 vs 0·635, respectively; P < 0·0001). CONCLUSION Cortisol metabolite excretion is modified in AT, including AT-, patients even without modification of UFC. Clinical usefulness of these biomarkers has to be investigated in prospective studies following up patients with AT.
Collapse
Affiliation(s)
- Julie Brossaud
- Department of Nuclear Medicine, CHU de Bordeaux, Pessac, France
- Nutrition et Neurobiologie intégrée, UMR 1286, University of Bordeaux, Pessac, France
| | - Dominique Ducint
- Department of Physical Measurements, CHU de Bordeaux, Bordeaux, France
| | - Jean-Benoît Corcuff
- Department of Nuclear Medicine, CHU de Bordeaux, Pessac, France
- Nutrition et Neurobiologie intégrée, UMR 1286, University of Bordeaux, Pessac, France
| |
Collapse
|
17
|
Roumes H, Brossaud J, Lemelletier A, Moisan MP, Pallet V, Redonnet A, Corcuff JB. Retinoids and glucocorticoids have opposite effects on actin cytoskeleton rearrangement in hippocampal HT22 cells. Int J Biochem Cell Biol 2015; 71:102-110. [PMID: 26748244 DOI: 10.1016/j.biocel.2015.12.014] [Citation(s) in RCA: 8] [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] [Received: 09/17/2015] [Revised: 12/18/2015] [Accepted: 12/28/2015] [Indexed: 12/12/2022]
Abstract
A chronic excess of glucocorticoids elicits deleterious effects in the hippocampus. Conversely, retinoic acid plays a major role in aging brain plasticity. As synaptic plasticity depends on mechanisms related to cell morphology, we investigated the involvement of retinoic acid and glucocorticoids in the remodelling of the HT22 neurons actin cytoskeleton. Cells exhibited a significantly more elongated shape with retinoic acid and a rounder shape with dexamethasone; retinoic acid reversed the effects of dexamethasone. Actin expression and abundance were unchanged by retinoic acid or dexamethasone but F-actin organization was dramatically modified. Indeed, retinoic acid and dexamethasone increased (70 ± 7% and 176 ± 5%) cortical actin while retinoic acid suppressed the effect of dexamethasone (90 ± 6%). Retinoic acid decreased (-22 ± 9%) and dexamethasone increased (134 ± 16%) actin stress fibres. Retinoic acid also suppressed the effect of dexamethasone (-21 ± 7%). Spectrin is a key protein in the actin network remodelling. Its abundance was decreased by retinoic acid and increased by dexamethasone (-21 ± 11% and 52 ± 10%). However, retinoic acid did not modify the effect of dexamethasone (48 ± 7%). Calpain activity on spectrin was increased by retinoic acid and decreased by dexamethasone (26 ± 14% and -57 ± 5%); retinoic acid mildly but significantly modified the effect of dexamethasone (-44 ± 7%). The calpain inhibitor calpeptin suppressed the effects of retinoic acid and dexamethasone on cell shape and actin stress fibres remodelling but did not modify the effects on cortical actin. Retinoic acid and dexamethasone have a dramatic but mainly opposite effect on actin cytoskeleton remodelling. These effects originate, at least partly, from calpain activity.
Collapse
Affiliation(s)
- Hélène Roumes
- INRA, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France
| | - Julie Brossaud
- University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; Laboratoire d'Hormonologie, Service de médecine nucléaire, CHU Bordeaux, 33604 Pessac, France
| | - Aloïs Lemelletier
- INRA, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France
| | - Marie-Pierre Moisan
- INRA, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France
| | - Véronique Pallet
- University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; IPB, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France
| | - Anabelle Redonnet
- INRA, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France
| | - Jean-Benoît Corcuff
- University Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, 33076 Bordeaux, France; Laboratoire d'Hormonologie, Service de médecine nucléaire, CHU Bordeaux, 33604 Pessac, France.
| |
Collapse
|
18
|
Brossaud J, Gatta B, Tabarin A, Corcuff JB. Different methods to estimate serum free cortisol: a comparison during cortisol tetracosactide testing. Clin Chem Lab Med 2014; 53:1367-73. [PMID: 25381955 DOI: 10.1515/cclm-2014-0912] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 10/20/2014] [Indexed: 11/15/2022]
Abstract
BACKGROUND Serum cortisol is routinely quantified by immunoassays. In intensive care units serum free cortisol (FC) determination has been described as a better indicator of survival than total cortisol (TC). To estimate FC different methods are available including saliva sampling. We compared five methods to estimate FC, before and after an ACTH stimulating test in patients suspected of adrenal insufficiency. METHOD Serum and saliva was collected from 130 patients from the Endocrine Department of a university hospital before and after tetracosactide injection for TC determination. FC was estimated: after serum ultrafiltration, quadratic (Coolens') or cubic (Dorin's) equations, using TC/cortisol-binding globulin concentrations ratio or using cortisol concentration determination in saliva. RESULTS FC concentrations obtained by different techniques were significantly correlated and Passing-Bablok regressions showed no deviation from linearity between salFC and filtFC or quadFC. Using the routine assumption that the patients were correctly diagnosed using a post-tetracosactide TC threshold of 550 nmol/L the FC methods generating the best ROC curves were salFC and filtFC or cubFC 30 min after tetracosactide injection. CONCLUSIONS FC concentrations obtained by different techniques are significantly but not similarly correlated with TC. As, salFC and filtFC are more convenient to perform than methods involving CBG assays and are better correlated to TC during tetracosactide tests they may be preferred as FC surrogate assays.
Collapse
|
19
|
Meiffred M, Carreire C, Brossaud J, Corcuff J, Thibault H, Barat P. SFP PC-03 - Insulinorésistance et fatigue cognitive chez l’enfant obèse. Arch Pediatr 2014. [DOI: 10.1016/s0929-693x(14)72153-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
20
|
Corcuff JB, Brossaud J. Rebaudioside A and cortisol metabolism: sweet news for consumers. Clin Chim Acta 2014; 431:276-7. [PMID: 24589773 DOI: 10.1016/j.cca.2014.02.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 02/20/2014] [Accepted: 02/20/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Jean-Benoît Corcuff
- Department of Nuclear Medicine, CHU de Bordeaux, F-33604 Pessac, France; Univ. Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, F-33000 Bordeaux, France.
| | - Julie Brossaud
- Department of Nuclear Medicine, CHU de Bordeaux, F-33604 Pessac, France; Univ. Bordeaux, Nutrition et neurobiologie intégrée, UMR 1286, F-33000 Bordeaux, France
| |
Collapse
|
21
|
Abstract
OBJECTIVES We set up plasma normetanephrine (pNMA) and metanephrine (pMA) assays as they demonstrated their usefulness for diagnosing phaeochromocytomas. Our scope is to describe some practical laboratory aspects and the clinical relevance of these assays in our endocrinological or cardiological departments. METHODS We retrospectively reviewed the results of MA from a population of in- and outpatients over a 7-year period. Subjects (n=2536) from endocrinological or cardiological departments were investigated (66 phaeochromocytomas). Urinary NMA (uNMA) and pNMA, and urinary MA (uMA) and pMA were assayed by HPLC with electrochemical detection. RESULTS pNMA and pMA assays are now more frequently requested than uNMA and uMA. This changed our laboratory work load with improved delivery, sensitivity and reliability of plasma assays as well as reduced apparatus maintenance time. The pNMA and pMA upper reference limits (URLs) of subjects with no phaeochromocytoma were 1040 and 430 pmol/l respectively. Sensitivity and specificity based on receiver operating characteristic curves optimal points were 83 and 93% for pNMA at 972 pmol/l and 67 and 98% for pMA at 638 pmol/l. Sensitivity and specificity of paired tests of pMA (positive test: at least one analyte above its URLs) were 100 and 91% respectively. CONCLUSION The very low concentration of analytes requires a sustained very good apparatus analytical sensitivity. This can be obtained in an up-to-date laboratory. In terms of clinical performances, assays in plasma or urine are equivalent. Depending on local preferences, populations, strategies or departments, requests for one or the other assay may sustain the need for specifically defined reference ranges.
Collapse
Affiliation(s)
- Julie Brossaud
- Department of Nuclear Medicine, CHU de Bordeaux, F-33604 Pessac, France
| | | | | | | | | | | |
Collapse
|
22
|
Barat P, Brossaud J, Lacoste A, Vautier V, Nacka F, Moisan MP, Corcuff JB. Nocturnal activity of 11β-hydroxy steroid dehydrogenase type 1 is increased in type 1 diabetic children. Diabetes & Metabolism 2013; 39:163-8. [DOI: 10.1016/j.diabet.2012.10.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 10/03/2012] [Accepted: 10/03/2012] [Indexed: 11/24/2022]
|
23
|
Brossaud J, Roumes H, Moisan MP, Pallet V, Redonnet A, Corcuff JB. Retinoids and glucocorticoids target common genes in hippocampal HT22 cells. J Neurochem 2013; 125:518-31. [PMID: 23398290 DOI: 10.1111/jnc.12192] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 01/11/2013] [Accepted: 01/14/2013] [Indexed: 11/29/2022]
Abstract
Vitamin A metabolite retinoic acid (RA) plays a major role in the aging adult brain plasticity. Conversely, chronic excess of glucocorticoids (GC) elicits some deleterious effects in the hippocampus. We questioned here the involvement of RA and GC in the expression of target proteins in hippocampal neurons. We investigated proteins involved either in the signaling pathways [RA receptor β (RARβ) and glucocorticoid receptor (GR)] or in neuron differentiation and plasticity [tissue transglutaminase 2 (tTG) and brain-derived neurotrophic factor (BDNF)] in a hippocampal cell line, HT22. We applied RA and/or dexamethasone (Dex) as activators of the pathways and investigated mRNA and protein expression of their receptors and of tTG and BDNF as well as tTG activity and BDNF secretion. Our results confirm the involvement of RA- and GC-dependent pathways and their interaction in our neuronal cell model. First, both pathways regulate the transcription and expression of own and reciprocal receptors: RA and Dex increased RARβ and decreased GR expressions. Second, Dex reduces the expression of tTG when associated with RA despite stimulating its expression when used alone. Importantly, when they are combined, RA counteracts the deleterious effect of glucocorticoids on BDNF regulation and thus may improve neuronal plasticity under stress conditions. In conclusion, GC and RA both interact through regulations of the two receptors, RARβ and GR. Furthermore, they both act, synergistically or oppositely, on other target proteins critical for neuronal plasticity, tTG and BDNF.
Collapse
Affiliation(s)
- Julie Brossaud
- INRA, Nutrition et Neurobiologie Intégrée, UMR1286, Bordeaux, France
| | | | | | | | | | | |
Collapse
|
24
|
Brossaud J, Barat P, Fagour L, Corcuff JB. Cortisol assay in dried blood spots to reduce false positive rate in congenital adrenal hyperplasia screening. Clin Chim Acta 2012; 413:1306-7. [DOI: 10.1016/j.cca.2012.04.022] [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] [Received: 04/03/2012] [Revised: 04/17/2012] [Accepted: 04/17/2012] [Indexed: 11/30/2022]
|
25
|
Georges A, Corcuff JB, Brossaud J, Bordenave L. Particularités méthodologiques et interprétation du dosage de thyroglobuline sérique. Médecine Nucléaire 2012. [DOI: 10.1016/j.mednuc.2011.11.001] [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] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
26
|
Abstract
BACKGROUND Erythropoietin (EPO) is an oxygenregulated hormone promoting the differentiation of erythroid progenitor cells. Apart fromhypoxia, few data is available about release by secretagogues including hormones. AIM To investigate EPO serum concentration in subjects with endocrine diseases. MATERIAL AND METHODS A retrospective study evaluating serumEPO concentrations in serumleftovers fromsubjects with various endocrine disorders. RESULTS EPO is not noticeably influenced by thyroid hormone or cortisol concentrations and the relationship with hemoglobin concentration is preserved. In acromegalic patients, the latter is lost but EPO is neither statistically influenced by GH/IGF-I. This may reflect a dual action of GH and/or IGF-I on erythroid progenitors proliferation as well as on EPO synthesis. CONCLUSION EPO is not noticeably modified by endocrine disorders although GH and or IGF-I may alter EPO relationship with blood hemoglobin concentration.
Collapse
Affiliation(s)
- E Klein
- Department of Nuclear Medicine, University Hospital of Bordeaux, Bordeaux, France
| | | | | | | |
Collapse
|
27
|
Brossaud J, Barat P, Gualde D, Corcuff JB. Cross reactions elicited by serum 17-OH progesterone and 11-desoxycortisol in cortisol assays. Clin Chim Acta 2009; 407:72-4. [DOI: 10.1016/j.cca.2009.05.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2009] [Revised: 05/22/2009] [Accepted: 05/22/2009] [Indexed: 11/30/2022]
|
28
|
Seki M, Obara K, Maebara S, Ikeda Y, Imai T, Nagashima T, Goniche M, Brossaud J, Barral C, Berger-By G, Bibet P, Poli S, Rey G, Tonon G. Outgassing measurement of the waveguide module for a steady state LHCD antenna. Fusion Engineering and Design 1995. [DOI: 10.1016/0920-3796(95)00413-f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|