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Wannowius M, Karakus E, Aktürk Z, Breuer J, Geyer J. Role of the Sodium-Dependent Organic Anion Transporter (SOAT/SLC10A6) in Physiology and Pathophysiology. Int J Mol Sci 2023; 24:9926. [PMID: 37373074 DOI: 10.3390/ijms24129926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/02/2023] [Accepted: 06/03/2023] [Indexed: 06/29/2023] Open
Abstract
The sodium-dependent organic anion transporter (SOAT, gene symbol SLC10A6) specifically transports 3'- and 17'-monosulfated steroid hormones, such as estrone sulfate and dehydroepiandrosterone sulfate, into specific target cells. These biologically inactive sulfo-conjugated steroids occur in high concentrations in the blood circulation and serve as precursors for the intracrine formation of active estrogens and androgens that contribute to the overall regulation of steroids in many peripheral tissues. Although SOAT expression has been detected in several hormone-responsive peripheral tissues, its quantitative contribution to steroid sulfate uptake in different organs is still not completely clear. Given this fact, the present review provides a comprehensive overview of the current knowledge about the SOAT by summarizing all experimental findings obtained since its first cloning in 2004 and by processing SOAT/SLC10A6-related data from genome-wide protein and mRNA expression databases. In conclusion, despite a significantly increased understanding of the function and physiological significance of the SOAT over the past 20 years, further studies are needed to finally establish it as a potential drug target for endocrine-based therapy of steroid-responsive diseases such as hormone-dependent breast cancer.
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Affiliation(s)
- Marie Wannowius
- Institute of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Biomedical Research Center Seltersberg (BFS), Justus Liebig University of Giessen, Schubertstr. 81, 35392 Giessen, Germany
| | - Emre Karakus
- Institute of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Biomedical Research Center Seltersberg (BFS), Justus Liebig University of Giessen, Schubertstr. 81, 35392 Giessen, Germany
| | - Zekeriya Aktürk
- General Practice, Faculty of Medicine, University of Augsburg, 86159 Augsburg, Germany
| | - Janina Breuer
- Institute of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Biomedical Research Center Seltersberg (BFS), Justus Liebig University of Giessen, Schubertstr. 81, 35392 Giessen, Germany
| | - Joachim Geyer
- Institute of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Biomedical Research Center Seltersberg (BFS), Justus Liebig University of Giessen, Schubertstr. 81, 35392 Giessen, Germany
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Wierman ME, Kiseljak-Vassiliades K. Should Dehydroepiandrosterone Be Administered to Women? J Clin Endocrinol Metab 2022; 107:1679-1685. [PMID: 35254428 PMCID: PMC9113789 DOI: 10.1210/clinem/dgac130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Indexed: 01/11/2023]
Abstract
CONTEXT Androgen prohormones such as dehydroepiandrosterone (DHEA) increase in early puberty, peak in the second and third decade, and thereafter decline, independent of menopausal status. Investigators have examined their potential beneficial effects in normal women and those with DHEA-deficient states. EVIDENCE ACQUISITION A review of the literature from 1985 to 2021 on the potential benefits and risks of androgen prohormones in women. EVIDENCE SYNTHESIS Studies have examined the potential benefit of DHEA therapy for anti-aging, sexual dysfunction, infertility, metabolic bone health, cognition, and wellbeing in hormone-deficient states such as primary adrenal insufficiency, hypopituitarism, and anorexia as well as administration to normal women across the lifespan. CONCLUSIONS Data support small benefits in quality of life and mood but not for anxiety or sexual function in women with primary or secondary adrenal insufficiency or anorexia. No consistent beneficial effects of DHEA administration have been observed for menopausal symptoms, sexual function, cognition, or overall wellbeing in normal women. Local administration of DHEA shows benefit in vulvovaginal atrophy. Use of DHEA to improve induction of ovulation response in women with diminished ovarian reserve is not recommended. Risks of high physiologic or pharmacologic use of DHEA include androgenic and estrogenic side effects which are of concern for long-term administration. CLINICAL CASE A 49-year-old woman with Addison's disease who is on low dose estrogen with cyclic progesterone therapy for menopausal symptoms returns for follow-up. She is on a stable glucocorticoid replacement strategy of hydrocortisone 10 mg in the morning and 5 mg in the early afternoon and fludrocortisone 0.05 mg each morning. She has read on the internet that additional therapy with DHEA may help her overall quality of life and libido. She asks whether she should add this therapy to her regimen and at what dose.
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Affiliation(s)
- Margaret E Wierman
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO 80045, USA
| | - Katja Kiseljak-Vassiliades
- Division of Endocrinology, Metabolism and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO 80045, USA
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Karakus E, Schmid A, Leiting S, Fühler B, Schäffler A, Jakob T, Geyer J. Role of the Steroid Sulfate Uptake Transporter Soat (Slc10a6) in Adipose Tissue and 3T3-L1 Adipocytes. Front Mol Biosci 2022; 9:863912. [PMID: 35573729 PMCID: PMC9095825 DOI: 10.3389/fmolb.2022.863912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/24/2022] [Indexed: 11/22/2022] Open
Abstract
In addition to the endocrine and paracrine systems, peripheral tissues such as gonads, skin, and adipose tissue are involved in the intracrine mechanisms responsible for the formation of sex steroids via the transformation of dehydroepiandrosterone and dehydroepiandrosterone sulfate (DHEA/DHEAS) into potent androgenic and estrogenic hormones. Numerous studies have examined the relationship between overweight, central obesity, and plasma levels of DHEA and DHEAS. The sodium-dependent organic anion transporter Soat (Slc10a6) is a plasma membrane uptake transporter for sulfated steroids. Significantly increased expression of Slc10a6 mRNA has been previously described in organs and tissues of lipopolysaccharide (LPS)-treated mice, including white adipose tissue. These findings suggest that Soat plays a role in the supply of steroids in peripheral target tissues. The present study aimed to investigate the expression of Soat in adipocytes and its role in adipogenesis. Soat expression was analyzed in mouse white intra-abdominal (WAT), subcutaneous (SAT), and brown (BAT) adipose tissue samples and in murine 3T3-L1 adipocytes. In addition, adipose tissue mass and size of the adipocytes were analyzed in wild-type and Slc10a6−/− knockout mice. Soat expression was detected in mouse WAT, SAT, and BAT using immunofluorescence. The expression of Slc10a6 mRNA was significantly higher in 3T3-L1 adipocytes than that of preadipocytes and was significantly upregulated by exposure to lipopolysaccharide (LPS). Slc10a6 mRNA levels were also upregulated in the adipose tissue of LPS-treated mice. In Slc10a6−/− knockout mice, adipocytes increased in size in the WAT and SAT of female mice and in the BAT of male mice, suggesting adipocyte hypertrophy. The serum levels of adiponectin, resistin, and leptin were comparable in wild-type and Slc10a6−/− knockout mice. The treatment of 3T3-L1 adipocytes with DHEA significantly reduced lipid accumulation, while DHEAS did not have a significant effect. However, following LPS-induced Soat upregulation, DHEAS also significantly inhibited lipid accumulation in adipocytes. In conclusion, Soat-mediated import of DHEAS and other sulfated steroids could contribute to the complex pathways of sex steroid intracrinology in adipose tissues. Although in cell cultures the Soat-mediated uptake of DHEAS appears to reduce lipid accumulation, in Slc10a6−/− knockout mice, the Soat deletion induced adipocyte hyperplasia through hitherto unknown mechanisms.
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Affiliation(s)
- Emre Karakus
- Institute of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Justus Liebig University, Giessen, Germany
| | - Andreas Schmid
- Department of Internal Medicine III, Giessen University Hospital, Justus Liebig University, Giessen, Germany
| | - Silke Leiting
- Institute of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Justus Liebig University, Giessen, Germany
| | - Bärbel Fühler
- Institute of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Justus Liebig University, Giessen, Germany
| | - Andreas Schäffler
- Department of Internal Medicine III, Giessen University Hospital, Justus Liebig University, Giessen, Germany
| | - Thilo Jakob
- Department of Dermatology and Allergology, Giessen University Hospital, Justus Liebig University, Giessen, Germany
| | - Joachim Geyer
- Institute of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Justus Liebig University, Giessen, Germany
- *Correspondence: Joachim Geyer,
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Pott J, Horn K, Zeidler R, Kirsten H, Ahnert P, Kratzsch J, Loeffler M, Isermann B, Ceglarek U, Scholz M. Sex-Specific Causal Relations between Steroid Hormones and Obesity-A Mendelian Randomization Study. Metabolites 2021; 11:738. [PMID: 34822396 PMCID: PMC8624973 DOI: 10.3390/metabo11110738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 10/22/2021] [Accepted: 10/26/2021] [Indexed: 12/15/2022] Open
Abstract
Steroid hormones act as important regulators of physiological processes including gene expression. They provide possible mechanistic explanations of observed sex-dimorphisms in obesity and coronary artery disease (CAD). Here, we aim to unravel causal relationships between steroid hormones, obesity, and CAD in a sex-specific manner. In genome-wide meta-analyses of four steroid hormone levels and one hormone ratio, we identified 17 genome-wide significant loci of which 11 were novel. Among loci, seven were female-specific, four male-specific, and one was sex-related (stronger effects in females). As one of the loci was the human leukocyte antigen (HLA) region, we analyzed HLA allele counts and found four HLA subtypes linked to 17-OH-progesterone (17-OHP), including HLA-B*14*02. Using Mendelian randomization approaches with four additional hormones as exposure, we detected causal effects of dehydroepiandrosterone sulfate (DHEA-S) and 17-OHP on body mass index (BMI) and waist-to-hip ratio (WHR). The DHEA-S effect was stronger in males. Additionally, we observed the causal effects of testosterone, estradiol, and their ratio on WHR. By mediation analysis, we found a direct sex-unspecific effect of 17-OHP on CAD while the other four hormone effects on CAD were mediated by BMI or WHR. In conclusion, we identified the sex-specific causal networks of steroid hormones, obesity-related traits, and CAD.
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Affiliation(s)
- Janne Pott
- Institute for Medical Informatics, Statistics and Epidemiology, Medical Faculty, University of Leipzig, 04107 Leipzig, Germany; (K.H.); (H.K.); (P.A.); (M.L.)
- LIFE Research Center for Civilization Diseases, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (J.K.); (B.I.); (U.C.)
| | - Katrin Horn
- Institute for Medical Informatics, Statistics and Epidemiology, Medical Faculty, University of Leipzig, 04107 Leipzig, Germany; (K.H.); (H.K.); (P.A.); (M.L.)
- LIFE Research Center for Civilization Diseases, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (J.K.); (B.I.); (U.C.)
| | - Robert Zeidler
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany;
| | - Holger Kirsten
- Institute for Medical Informatics, Statistics and Epidemiology, Medical Faculty, University of Leipzig, 04107 Leipzig, Germany; (K.H.); (H.K.); (P.A.); (M.L.)
- LIFE Research Center for Civilization Diseases, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (J.K.); (B.I.); (U.C.)
| | - Peter Ahnert
- Institute for Medical Informatics, Statistics and Epidemiology, Medical Faculty, University of Leipzig, 04107 Leipzig, Germany; (K.H.); (H.K.); (P.A.); (M.L.)
- LIFE Research Center for Civilization Diseases, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (J.K.); (B.I.); (U.C.)
| | - Jürgen Kratzsch
- LIFE Research Center for Civilization Diseases, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (J.K.); (B.I.); (U.C.)
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany;
| | - Markus Loeffler
- Institute for Medical Informatics, Statistics and Epidemiology, Medical Faculty, University of Leipzig, 04107 Leipzig, Germany; (K.H.); (H.K.); (P.A.); (M.L.)
- LIFE Research Center for Civilization Diseases, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (J.K.); (B.I.); (U.C.)
| | - Berend Isermann
- LIFE Research Center for Civilization Diseases, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (J.K.); (B.I.); (U.C.)
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany;
| | - Uta Ceglarek
- LIFE Research Center for Civilization Diseases, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (J.K.); (B.I.); (U.C.)
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, 04103 Leipzig, Germany;
| | - Markus Scholz
- Institute for Medical Informatics, Statistics and Epidemiology, Medical Faculty, University of Leipzig, 04107 Leipzig, Germany; (K.H.); (H.K.); (P.A.); (M.L.)
- LIFE Research Center for Civilization Diseases, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany; (J.K.); (B.I.); (U.C.)
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Exercise training and burdock root (Arctium lappa L.) extract independently improve abdominal obesity and sex hormones in elderly women with metabolic syndrome. Sci Rep 2021; 11:5175. [PMID: 33664334 PMCID: PMC7933410 DOI: 10.1038/s41598-021-84301-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 02/02/2021] [Indexed: 01/31/2023] Open
Abstract
The prevalence of metabolic syndrome (MS) is increasing among the elderly, and new lifestyle-based treatment strategies are warranted. We conducted a randomized, double-blind controlled trial of the effects of aquatic exercise (AE) and/or consumption of burdock root extract (BE) on body composition and serum sex hormones, i.e., testosterone, estradiol, sex hormone-binding globulin (SHBG), and dehydroepiandrosterone-sulfate (DHEA-S) in elderly women with MS. The percentage of abdominal fat was decreased in the AE group. Waist circumference was increased in the control (CON) group, but not in the other groups. SHBG and estradiol levels were enhanced by both AE and BE and correlated with changes in fat-related body composition. DHEA-S levels only increased in the BE group, which was consistent with changes in lean body mass. Testosterone levels decreased in the CON group, which correlated with changes in lean body mass, skeletal muscle mass, body fat, and waist circumference. Our findings suggested that the combined AE/BE intervention exerted no synergistic and/or additive effects on any sex-related outcome measures in elderly women with MS.
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Dutheil F, de Saint Vincent S, Pereira B, Schmidt J, Moustafa F, Charkhabi M, Bouillon-Minois JB, Clinchamps M. DHEA as a Biomarker of Stress: A Systematic Review and Meta-Analysis. Front Psychiatry 2021; 12:688367. [PMID: 34295276 PMCID: PMC8290065 DOI: 10.3389/fpsyt.2021.688367] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/28/2021] [Indexed: 12/13/2022] Open
Abstract
Background: Psychosocial stress is a significant public health problem inducing consequences for quality of life. Results about the use of dehydroepiandrosterone (DHEA) as a biomarker of acute stress are conflicting. We conducted a systematic review and meta-analysis to demonstrate that DHEA levels could be a biomarker of stress. Methods: PubMed, Cochrane Library, Embase, and ScienceDirect databases were searched on March 19, 2021 using the keywords "acute stress" AND "DHEA" OR "Dehydroepiandrosterone." Articles needed to describe our primary outcome, i.e., induction of acute stress and at least two measures of DHEA. Results: We included 14 studies, with a total of 631 participants, in our meta-analysis. The DHEA levels increased overtime after acute stress [standardized mean difference (SMD) = 1.56, 95%CI = 1.13-1.99]. Stratification by time showed a main peak at the end of stress (SMD = 2.43, 95%CI = 1.59-3.27), followed by a progressive decrease (coefficient = -0.11, 95%CI = -0.19 to -0.17, p = 0.020). There was no significant change 1 h after the end of acute stress. Metaregressions showed an impact of mental stress (SMD = 2.04, 95%CI = 1.43-2.65), sex (SMD = 0.02, 95%CI = 0.00-0.04), age (SMD = -0.12, 95%CI = -0.2 to -0.05), and obesity (SMD = 0.31, 95%CI = -0.00 to 0.63). There was no difference whatever the type of fluid (blood or saliva) and the measurement technique used. Conclusions: DHEA is a biomarker of acute stress, with a short-term increase (1 h). DHEA increases following acute mental stress, whatever the type and duration of mental stress. Women, young people, and obese individuals had a higher response. Blood and saliva measures were comparable.
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Affiliation(s)
- Frédéric Dutheil
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, CHU Clermont-Ferrand, Occupational and Environmental Medicine, Wittyfit, Clermont-Ferrand, France
| | - Sarah de Saint Vincent
- Université Clermont Auvergne, Occupational and Environmental Medicine, Clermont-Ferrand, France
| | - Bruno Pereira
- CHU Clermont-Ferrand, CHU Clermont-Ferrand, Clinical Research and Innovation Direction, Clermont-Ferrand, France
| | - Jeannot Schmidt
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, CHU Clermont-Ferrand, Emergency Department, Clermont-Ferrand, France
| | - Farès Moustafa
- Université Clermont Auvergne, CHU Clermont-Ferrand, Emergency Department, Clermont-Ferrand, France
| | - Morteza Charkhabi
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, Clermont-Ferrand, France
| | - Jean-Baptiste Bouillon-Minois
- Université Clermont Auvergne, CNRS, LaPSCo, Physiological and Psychosocial Stress, CHU Clermont-Ferrand, Emergency Department, Clermont-Ferrand, France
| | - Maëlys Clinchamps
- CHU Clermont-Ferrand, CHU Clermont-Ferrand, Occupational and Environmental Medicine, Clermont-Ferrand, France
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Qin Y, O Santos H, Khani V, Tan SC, Zhi Y. Effects of dehydroepiandrosterone (DHEA) supplementation on the lipid profile: A systematic review and dose-response meta-analysis of randomized controlled trials. Nutr Metab Cardiovasc Dis 2020; 30:1465-1475. [PMID: 32675010 DOI: 10.1016/j.numecd.2020.05.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/21/2020] [Accepted: 05/25/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND AIMS Dehydroepiandrosterone (DHEA) supplementation has gained attention in individuals with adrenal insufficiency, and as a tool for increasing androgens and estrogens whereby is proposed to improve the accretion of muscle and bone mass. However, DHEA supplementation has demonstrated negative effects on the lipid profile and, thus, we aimed to analyze the body of evidence in this regard. METHODS AND RESULTS A systematic review and dose-response meta-analysis of randomized controlled trials (RCTs) was performed employing in Scopus, PubMed/Medline, Web of Science, Embase and Google Scholar, then including relevant articles that addressed the effects of DHEA supplementation on the lipid profile, up to February 2020. Combined findings were generated from 23 eligible articles. Hence, total cholesterol (TC) (weighted mean difference (WMD): -3.5 mg/dl, 95% confidence interval (CI): -8.5 to 1.6)), low-density lipoprotein-cholesterol (LDL-C) (WMD: 0.34 mg/dl, 95% CI: -3 to 3.7) and triglycerides (TG) levels (WMD: -2.85 mg/dl, 95% CI: -9.3 to 3.6) did not alter in DHEA group compared to the control, but HDL-C levels significantly reduced in DHEA group (WMD: -3.1 mg/dl, 95% CI: -4.9 to -1.3). In addition, a significant reduction in HDL-C values was observed in studies comprising women (WMD: -5.1 mg/dl, 95% CI: -7.2 to -3) but not in males (WMD: 0.13 mg/dl, 95% CI: -1.4 to 1.7). CONCLUSIONS Overall, supplementation with DHEA did not change circulating values of TC, LDL-C and TG, whereas it may decrease HDL-C levels. Further long-term RCTs are required to investigate the effects of DHEA particularly on major adverse cardiac events.
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Affiliation(s)
- Ying Qin
- Department of Hypertension, Jinan Municipal Hospital of Traditional Chinese Medicine, No. 76, Gongqingtuan Road, Jinan City, Shandong Province, 250000, PR China
| | - Heitor O Santos
- School of Medicine, Federal University of Uberlandia (UFU), Uberlandia, Minas Gerais, Brazil
| | - Vahid Khani
- Department of Radiology, Taleghani Hospital, Student Research Committee, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shing Cheng Tan
- UKM Medical Molecular Biology Institute, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Yingpeng Zhi
- Department of Hypertension, Jinan Municipal Hospital of Traditional Chinese Medicine, No. 76, Gongqingtuan Road, Jinan City, Shandong Province, 250000, PR China.
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8
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Dehydroepiandrosterone on metabolism and the cardiovascular system in the postmenopausal period. J Mol Med (Berl) 2019; 98:39-57. [DOI: 10.1007/s00109-019-01842-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/16/2019] [Accepted: 10/09/2019] [Indexed: 12/16/2022]
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Balaban S, Durmus C, Aydindogan E, Gumus ZP, Timur S. An Electrochemical Biosensor Platform for Testing of Dehydroepiandrosterone 3‐Sulfate (DHEA−S) as a Model for Doping Materials. ELECTROANAL 2019. [DOI: 10.1002/elan.201900413] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Simge Balaban
- Department of Biochemistry, Faculty of Science DepartmentEge University 35100 Bornova, Izmir Turkey
| | - Ceren Durmus
- Department of Biochemistry, Faculty of Science DepartmentEge University 35100 Bornova, Izmir Turkey
| | - Eda Aydindogan
- Department of Biochemistry, Faculty of Science DepartmentEge University 35100 Bornova, Izmir Turkey
| | - Zinar Pinar Gumus
- Central Research Test and Analysis Laboratory Application and Research CenterEge University 35100 Bornova Izmir Turkey
| | - Suna Timur
- Department of Biochemistry, Faculty of Science DepartmentEge University 35100 Bornova, Izmir Turkey
- Central Research Test and Analysis Laboratory Application and Research CenterEge University 35100 Bornova Izmir Turkey
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Bentley C, Hazeldine J, Greig C, Lord J, Foster M. Dehydroepiandrosterone: a potential therapeutic agent in the treatment and rehabilitation of the traumatically injured patient. BURNS & TRAUMA 2019; 7:26. [PMID: 31388512 PMCID: PMC6676517 DOI: 10.1186/s41038-019-0158-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 05/03/2019] [Indexed: 02/07/2023]
Abstract
Severe injuries are the major cause of death in those aged under 40, mainly due to road traffic collisions. Endocrine, metabolic and immune pathways respond to limit the tissue damage sustained and initiate wound healing, repair and regeneration mechanisms. However, depending on age and sex, the response to injury and patient prognosis differ significantly. Glucocorticoids are catabolic and immunosuppressive and are produced as part of the stress response to injury leading to an intra-adrenal shift in steroid biosynthesis at the expense of the anabolic and immune enhancing steroid hormone dehydroepiandrosterone (DHEA) and its sulphated metabolite dehydroepiandrosterone sulphate (DHEAS). The balance of these steroids after injury appears to influence outcomes in injured humans, with high cortisol: DHEAS ratio associated with increased morbidity and mortality. Animal models of trauma, sepsis, wound healing, neuroprotection and burns have all shown a reduction in pro-inflammatory cytokines, improved survival and increased resistance to pathological challenges with DHEA supplementation. Human supplementation studies, which have focused on post-menopausal females, older adults, or adrenal insufficiency have shown that restoring the cortisol: DHEAS ratio improves wound healing, mood, bone remodelling and psychological well-being. Currently, there are no DHEA or DHEAS supplementation studies in trauma patients, but we review here the evidence for this potential therapeutic agent in the treatment and rehabilitation of the severely injured patient.
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Affiliation(s)
- Conor Bentley
- 1NIHR Surgical Reconstruction and Microbiology Research Centre, University Hospital Birmingham, Birmingham, B15 2WB UK.,2School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK.,3MRC-Arthritis Research UK Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, Birmingham University Medical School, Birmingham, B15 2TT UK
| | - Jon Hazeldine
- 1NIHR Surgical Reconstruction and Microbiology Research Centre, University Hospital Birmingham, Birmingham, B15 2WB UK.,3MRC-Arthritis Research UK Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, Birmingham University Medical School, Birmingham, B15 2TT UK
| | - Carolyn Greig
- 2School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, UK.,4NIHR Biomedical Research Centre, University Hospital Birmingham, Birmingham, UK
| | - Janet Lord
- 1NIHR Surgical Reconstruction and Microbiology Research Centre, University Hospital Birmingham, Birmingham, B15 2WB UK.,3MRC-Arthritis Research UK Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, Birmingham University Medical School, Birmingham, B15 2TT UK.,4NIHR Biomedical Research Centre, University Hospital Birmingham, Birmingham, UK
| | - Mark Foster
- 1NIHR Surgical Reconstruction and Microbiology Research Centre, University Hospital Birmingham, Birmingham, B15 2WB UK.,5Royal Centre for Defence Medicine, Birmingham Research Park, Birmingham, B15 2SQ UK
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11
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Dietary Intake of Selenium in Relation to Pubertal Development in Mexican Children. Nutrients 2019; 11:nu11071595. [PMID: 31337124 PMCID: PMC6682956 DOI: 10.3390/nu11071595] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/08/2019] [Accepted: 07/11/2019] [Indexed: 12/27/2022] Open
Abstract
Alterations in pubertal timing have been associated with long-term health outcomes. While a few reports have shown that dietary intake of selenium is associated with fertility and testosterone levels in men, no human studies have considered the association between selenium and pubertal development in children. We examined the cross-sectional association of childhood dietary intake of selenium with pubertal development among 274 girls and 245 boys aged 10–18 years in Mexico City. Multiple logistic and ordinal regression models were used to capture the association between energy-adjusted selenium intake (below Recommended Dietary Allowance (RDA) vs. above RDA) and stages of sexual maturity in children, adjusted for covariates. We found that boys with consumption of selenium below the RDA had lower odds of a higher stage for pubic hair growth (odds ratio (OR) = 0.51, 95% confidence interval (95% CI): 0.27–0.97) and genital development (OR = 0.53, 95% CI: 0.28–0.99) as well as a lower probability of having matured testicular volume (OR = 0.37, 95% CI: 0.15–0.88) compared with boys who had adequate daily dietary intake of selenium (above RDA). No associations were found in girls. According to our results, it is possible that inadequate consumption of selenium may be associated with later pubertal development in boys, suggesting a sex-specific pattern. Future work with a larger sample size and measures of selenium biomarkers is needed to confirm our findings and improve understanding of the role of this mineral in children’s sexual development.
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Gravisse N, Vibarel-Rebot N, Buisson C, Le Tiec C, Castanier C, Do MC, Gagey O, Audran M, Collomp K. Short-term DHEA administration in recreational athletes: impact on food intake, segmental body composition and adipokines. J Sports Med Phys Fitness 2019; 59:808-816. [DOI: 10.23736/s0022-4707.18.08845-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Mäntyselkä A, Lindi V, Viitasalo A, Eloranta AM, Ågren J, Väisänen S, Voutilainen R, Laitinen T, Lakka TA, Jääskeläinen J. Associations of Dehydroepiandrosterone Sulfate With Cardiometabolic Risk Factors in Prepubertal Children. J Clin Endocrinol Metab 2018; 103:2592-2600. [PMID: 29757399 DOI: 10.1210/jc.2018-00184] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 05/07/2018] [Indexed: 02/13/2023]
Abstract
CONTEXT Premature adrenarche (PA) has been associated with overweight and insulin resistance, but the associations of serum dehydroepiandrosterone sulfate (DHEAS) concentration with other cardiometabolic risk factors are uncertain. OBJECTIVE To examine the associations of serum DHEAS concentration with several cardiometabolic risk factors in children. DESIGN Cross-sectional data from the Physical Activity and Nutrition in Children Study. PARTICIPANTS Population sample of 207 girls and 225 boys aged 7.6 ± 0.4 years. MAIN OUTCOME MEASURES Cardiometabolic risk factors by serum DHEAS concentration. RESULTS DHEAS correlated positively with body mass index standard deviation score, body fat percentage, lean body mass, high-sensitivity C-reactive protein (hs-CRP), and alanine aminotransferase (ALT) when adjusted for age and sex. The associations of DHEAS with hs-CRP and ALT disappeared when adjusted also for body fat percentage. When further adjusted for birth weight SD score, DHEAS correlated negatively with low-density lipoprotein (LDL) cholesterol and LDL/high-density lipoprotein (HDL) cholesterol ratio. LDL cholesterol was lower in children with DHEAS ≥40 µg/dL than in those with DHEAS <40 µg/dL, adjusted for age, sex, and body fat percentage (86.5 vs 92.3 mg/dL, P = 0.029). This association strengthened after further adjustment for birth weight SD score (85.3 vs 92.3 mg/dL, P = 0.012). CONCLUSION Higher DHEAS is not associated with an increased cardiometabolic risk in prepubertal children. Instead, it may be protective, evidenced by an association with lower LDL cholesterol and LDL/HDL cholesterol ratio. The increased cardiometabolic risk in PA shown in many studies may be due to low birth weight and childhood overweight associated with PA.
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Affiliation(s)
- Aino Mäntyselkä
- Department of Pediatrics, School of Medicine, Kuopio University Hospital, and University of Eastern Finland Kuopio, Finland
| | - Virpi Lindi
- Institute of Biomedicine, Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - Anna Viitasalo
- Institute of Biomedicine, Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - Aino-Maija Eloranta
- Institute of Biomedicine, Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - Jyrki Ågren
- Institute of Biomedicine, Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland
| | - Sari Väisänen
- Department of Clinical Chemistry, University of Eastern Finland and Eastern Finland Laboratory Centre, Kuopio Finland
| | - Raimo Voutilainen
- Department of Pediatrics, School of Medicine, Kuopio University Hospital, and University of Eastern Finland Kuopio, Finland
| | - Tomi Laitinen
- Department of Clinical Physiology and Nuclear Medicine, School of Medicine, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland
| | - Timo A Lakka
- Institute of Biomedicine, Physiology, School of Medicine, University of Eastern Finland, Kuopio, Finland
- Department of Clinical Physiology and Nuclear Medicine, School of Medicine, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland
- Kuopio Research Institute of Exercise Medicine, Kuopio, Finland
| | - Jarmo Jääskeläinen
- Department of Pediatrics, School of Medicine, Kuopio University Hospital, and University of Eastern Finland Kuopio, Finland
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Collomp K, Buisson C, Gravisse N, Belgherbi S, Labsy Z, Do MC, Gagey O, Dufay S, Vibarel-Rebot N, Audran M. Effects of short-term DHEA intake on hormonal responses in young recreationally trained athletes: modulation by gender. Endocrine 2018; 59:538-546. [PMID: 29322301 DOI: 10.1007/s12020-017-1514-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 12/26/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND Dehydroepiandrosterone (DHEA) figures on the World Anti-Doping Agency list of prohibited substances in sport because it is assumed that athletes expect a significant increase in testosterone through DHEA administration. The literature on the hormonal effects of DHEA intake nevertheless appears to be very scant in healthy young subjects, especially women. PURPOSE We examined the effects of DHEA on adrenal and gonadal hormones, IGF1 and free T3 in healthy young male and female recreationally trained volunteers. METHODS The study followed a double-blind, randomized-order crossover design. Lean healthy young men (n = 10) and women (n = 11), with all women using oral contraceptives, were treated daily with 100 mg of DHEA and placebo for 4 weeks. DHEA, DHEA-sulfate (DHEA-S), androstenedione, total testosterone (Tes), dihydrotestosterone (DHT), SHBG, estrone, cortisol, IGF1, and free T3 were measured before, in the middle and at the end of each treatment, as were blood glucose, liver transaminases and lipid status. RESULTS We observed a significant increase in DHEA, DHEA-S, androstenedione, Tes, DHT, and estrone in both men and women in the middle and at the end of DHEA treatment, but the increase in Tes was more marked in women (p < 0.001) than men (p < 0.05). No changes were found in the other parameters, irrespective of gender. CONCLUSION In young athletes, DHEA administration induces significant blood hormonal changes, some modulated by gender, which can be used as biomarkers of doping.
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Affiliation(s)
- Katia Collomp
- CIAMS, Univ. Paris-Sud, Université Paris-Saclay, Orsay, France.
- CIAMS, Université Orléans, Orléans, France.
- Département des Analyses, AFLD, Chatenay-Malabry, France.
| | | | - Nicolas Gravisse
- CIAMS, Univ. Paris-Sud, Université Paris-Saclay, Orsay, France
- CIAMS, Université Orléans, Orléans, France
| | - Soraya Belgherbi
- Service de Médecine Préventive, Univ. Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Zakaria Labsy
- CIAMS, Univ. Paris-Sud, Université Paris-Saclay, Orsay, France
- CIAMS, Université Orléans, Orléans, France
| | - Manh-Cuong Do
- CIAMS, Univ. Paris-Sud, Université Paris-Saclay, Orsay, France
- CIAMS, Université Orléans, Orléans, France
| | - Olivier Gagey
- CIAMS, Univ. Paris-Sud, Université Paris-Saclay, Orsay, France
- CIAMS, Université Orléans, Orléans, France
| | - Sophie Dufay
- Laboratoire de Développement Analytique, AGEPS, Paris, France
| | - Nancy Vibarel-Rebot
- CIAMS, Univ. Paris-Sud, Université Paris-Saclay, Orsay, France
- CIAMS, Université Orléans, Orléans, France
| | - Michel Audran
- Département des Analyses, AFLD, Chatenay-Malabry, France
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15
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Colín-Val Z, González-Puertos VY, Mendoza-Milla C, Gómez EO, Huesca-Gómez C, López-Marure R. DHEA increases epithelial markers and decreases mesenchymal proteins in breast cancer cells and reduces xenograft growth. Toxicol Appl Pharmacol 2017; 333:26-34. [PMID: 28803991 DOI: 10.1016/j.taap.2017.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 08/02/2017] [Accepted: 08/09/2017] [Indexed: 01/05/2023]
Abstract
Breast cancer is one of the most common neoplasias and the leading cause of cancer death in women worldwide. Its high mortality rate is linked to a great metastatic capacity associated with the epithelial-mesenchymal transition (EMT). During this process, a decrease in epithelial proteins expression and an increase of mesenchymal proteins are observed. On the other hand, it has been shown that dehydroepiandrosterone (DHEA), the most abundant steroid in human plasma, inhibits migration of breast cancer cells; however, the underlying mechanisms have not been elucidated. In this study, the in vitro effect of DHEA on the expression pattern of some EMT-related proteins, such as E-cadherin (epithelial), N-cadherin, vimentin and Snail (mesenchymal) was measured by Western blot and immunofluorescence in MDA-MB-231 breast cancer cells with invasive, metastatic and mesenchymal phenotype. Also, the in vivo effect of DHEA on xenograft tumor growth in nude mice (nu-/nu-) and on expression of the same epithelial and mesenchymal proteins in generated tumors was evaluated. We found that DHEA increased expression of E-cadherin and decreased N-cadherin, vimentin and Snail expression both in MD-MB-231 cells and in the formed tumors, possibly by DHEA-induced reversion of mesenchymal phenotype. These results were correlated with a tumor size reduction in mouse xenografts following DHEA administration either a week earlier or concurrent with breast cancer cells inoculation. In conclusion, DHEA could be useful in the treatment of breast cancer with mesenchymal phenotype.
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Affiliation(s)
- Zaira Colín-Val
- Departamento de Fisiología, Instituto Nacional de Cardiología "Ignacio Chávez", Ciudad de México, Mexico
| | | | - Criselda Mendoza-Milla
- Laboratorio de Biología Celular, Departamento de Fibrosis Pulmonar, Instituto Nacional de Enfermedades Respiratorias "Ismael Cosío Villegas", Mexico
| | - Erika Olivia Gómez
- Universidad Autónoma de la Ciudad de México, Colegio de Ciencias y Humanidades, Plantel San Lorenzo Tezonco, Mexico
| | - Claudia Huesca-Gómez
- Departamento de Fisiología, Instituto Nacional de Cardiología "Ignacio Chávez", Ciudad de México, Mexico
| | - Rebeca López-Marure
- Departamento de Fisiología, Instituto Nacional de Cardiología "Ignacio Chávez", Ciudad de México, Mexico.
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16
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Hodges‐Simeon CR, Prall SP, Blackwell AD, Gurven M, Gaulin SJ. Adrenal maturation, nutritional status, and mucosal immunity in Bolivian youth. Am J Hum Biol 2017; 29. [DOI: 10.1002/ajhb.23025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 03/29/2017] [Accepted: 05/29/2017] [Indexed: 11/11/2022] Open
Affiliation(s)
| | - Sean P. Prall
- Department of AnthropologyUniversity of CaliforniaLos Angeles California90095
| | - Aaron D. Blackwell
- Department of AnthropologyUniversity of CaliforniaSanta Barbara California93106
| | - Michael Gurven
- Department of AnthropologyUniversity of CaliforniaSanta Barbara California93106
| | - Steven J.C. Gaulin
- Department of AnthropologyUniversity of CaliforniaSanta Barbara California93106
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17
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Zhao M, Garland T, Chappell MA, Andrew JR, Saltzman W. Metabolic and affective consequences of fatherhood in male California mice. Physiol Behav 2017; 177:57-67. [PMID: 28414073 DOI: 10.1016/j.physbeh.2017.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/10/2017] [Accepted: 04/12/2017] [Indexed: 01/06/2023]
Abstract
Physiological and affective condition can be modulated by the social environment and parental state in mammals. However, in species in which males assist with rearing offspring, the metabolic and affective effects of pair bonding and fatherhood on males have rarely been explored. In this study we tested the hypothesis that fathers, like mothers, experience energetic costs as well as behavioral and affective changes (e.g., depression, anxiety) associated with parenthood. We tested this hypothesis in the monogamous, biparental California mouse (Peromyscus californicus). Food intake, blood glucose and lipid levels, blood insulin and leptin levels, body composition, pain sensitivity, and depression-like behavior were compared in males from three reproductive groups: virgin males (VM, housed with another male), non-breeding males (NB, housed with a tubally ligated female), and breeding males (BM, housed with a female and their first litter). We found statistically significant (P<0.007, when modified for Adaptive False Discovery Rate) or nominally significant (0.007<P<0.05) differences among reproductive groups in relative testis mass, circulating glucose, triglyceride, and insulin concentrations, pain sensitivity, and anxiety-like behaviors. A priori contrasts indicated that VM produced significantly more fecal pellets than BM in the tail-suspension test, had significantly higher glucose levels than NB, and had significantly lower average testis masses than did NB and BM. A priori contrasts also indicated that VM had a nominally longer latency to the pain response than NB and that VM had nominally higher insulin levels than did NB. For breeding males, litter size (one to three pups) was a nominally significant positive predictor of body mass, food consumption, fat mass, and plasma leptin concentration. These results indicate that cohabitation with a female and/or fatherhood influences several metabolic, morphological, and affective measures in male California mice. Overall, the changes we observed in breeding males were minor, but stronger effects might occur in long-term breeding males and/or under more challenging environmental conditions.
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Affiliation(s)
- Meng Zhao
- Department of Biology, University of California, Riverside, USA; Evolution, Ecology and Organismal Biology Graduate Program, University of California, Riverside, USA
| | - Theodore Garland
- Department of Biology, University of California, Riverside, USA; Evolution, Ecology and Organismal Biology Graduate Program, University of California, Riverside, USA
| | - Mark A Chappell
- Department of Biology, University of California, Riverside, USA; Evolution, Ecology and Organismal Biology Graduate Program, University of California, Riverside, USA
| | - Jacob R Andrew
- Department of Biology, University of California, Riverside, USA; Evolution, Ecology and Organismal Biology Graduate Program, University of California, Riverside, USA
| | - Wendy Saltzman
- Department of Biology, University of California, Riverside, USA; Evolution, Ecology and Organismal Biology Graduate Program, University of California, Riverside, USA.
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18
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Hakkak R, Bell A, Korourian S. Dehydroepiandrosterone (DHEA) Feeding Protects Liver Steatosis in Obese Breast Cancer Rat Model. Sci Pharm 2017; 85:scipharm85010013. [PMID: 28335515 PMCID: PMC5388150 DOI: 10.3390/scipharm85010013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 03/10/2017] [Accepted: 03/13/2017] [Indexed: 01/01/2023] Open
Abstract
Obesity is a major health problem in the US and globally. Obesity is associated with the risk of cardiovascular disease, type 2 diabetes, cancers, hyperlipidemia, and liver steatosis development. Dehydroepiandrosterone (DHEA) is a dietary supplement used as an anti-obesity supplement. Previously, we reported that DHEA feeding protects 7,12-dimethylbenz(a)anthracene (DMBA)-induced mammary tumors. The objectives of this study were to investigate the effects of obesity and DHEA feeding on liver steatosis, body weight gain, and serum DHEA, DHEA sulfate (DHEA-S), insulin-like growth factor-1 (IGF-1), and insulin-like growth factor binding protein-3 (IGFBP-3) levels. Female Zucker rats were randomly assigned to either a control diet or a control diet with DHEA supplementation for 155 days. Livers were collected for histological examination. Serum was collected to measure DHEA, DHEA-S, IGF-1, and IGFBP-3. Our results show that DHEA-fed rats had significantly less liver steatosis (p < 0.001) than control-fed rats and gained less weight (p < 0.001). DHEA feeding caused significant decreases (p < 0.001) in the serum levels of IGF-1 and IGFBP-3 and significantly increased (p < 0.001) serum levels of DHEA and DHEA-S. Our results suggest that DHEA feeding can protect against liver steatosis by reducing body weight gain and modulating serum IGF-1 and IGFBP-3 levels in an obese breast cancer rat model.
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Affiliation(s)
- Reza Hakkak
- Department of Dietetics and Nutrition, 4301 W. Markham St., Mail Slot 627, Little Rock, AR 72205, USA.
- Pediatrics, University of Arkansas for Medical Sciences, 4301 W. Markham St., Little Rock, AR 72205, USA.
- Arkansas Children's Research Institute, 13 Children's Way, Little Rock, AR 72202, USA.
| | - Andrea Bell
- Department of Dietetics and Nutrition, 4301 W. Markham St., Mail Slot 627, Little Rock, AR 72205, USA.
| | - Soheila Korourian
- Department of Pathology, University of Arkansas for Medical Sciences, W. Markham St., Little Rock, AR 72205, USA.
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19
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Newell-Fugate AE. The role of sex steroids in white adipose tissue adipocyte function. Reproduction 2017; 153:R133-R149. [PMID: 28115579 DOI: 10.1530/rep-16-0417] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 01/16/2017] [Accepted: 01/20/2017] [Indexed: 12/13/2022]
Abstract
With the increasing knowledge that gender influences normal physiology, much biomedical research has begun to focus on the differential effects of sex on tissue function. Sexual dimorphism in mammals is due to the combined effects of both genetic and hormonal factors. Hormonal factors are mutable particularly in females in whom the estrous cycle dominates the hormonal milieu. Given the severity of the obesity epidemic and the fact that there are differences in the obesity rates in men and women, the role of sex in white adipose tissue function is being recognized as increasingly important. Although sex differences in white adipose tissue distribution are well established, the mechanisms affecting differential function of adipocytes within white adipose tissue in males and females remain largely understudied and poorly understood. One of the largest differences in the endocrine environment in males and females is the concentration of circulating androgens and estrogens. This review examines the effects of androgens and estrogens on lipolysis/lipogenesis, adipocyte differentiation, insulin sensitivity and adipokine production in adipocytes from white adipose tissue with a specific emphasis on the sexual dimorphism of adipocyte function in white adipose tissue during both health and disease.
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Affiliation(s)
- A E Newell-Fugate
- Department of Veterinary Physiology and PharmacologyTexas A&M University, College Station, Texas, USA
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20
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Brahimaj A, Muka T, Kavousi M, Laven JSE, Dehghan A, Franco OH. Serum dehydroepiandrosterone levels are associated with lower risk of type 2 diabetes: the Rotterdam Study. Diabetologia 2017; 60:98-106. [PMID: 27771738 PMCID: PMC6518366 DOI: 10.1007/s00125-016-4136-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 09/26/2016] [Indexed: 12/22/2022]
Abstract
AIMS/HYPOTHESIS Previous literature documents controversial results for the impact of dehydroepiandrosterone (DHEA) in glucose metabolism. We aimed to assess the associations between serum levels of DHEA and its main derivatives DHEA sulphate (DHEAS) and androstenedione, as well as the ratio of DHEAS to DHEA, and risk of type 2 diabetes. METHODS We used data on serum levels of DHEA, DHEAS and androstenedione from 5189 middle-aged and elderly men and women from the prospective population-based Rotterdam Study. Type 2 diabetes was defined as a fasting blood glucose ≥7.0 mmol/l or a non-fasting blood glucose ≥11.1 mmol/l. RESULTS During a median follow-up of 10.9 years, 643 patients with incident type 2 diabetes were identified. After adjusting for age, sex, cohort, fasting status, fasting glucose and insulin, and BMI, both serum DHEA levels (per 1 unit natural log-transformed, HR 0.76, 95% CI 0.67, 0.87) and serum DHEAS levels (per 1 unit natural log-transformed, HR 0.82, 95% CI 0.73, 0.92) were inversely associated with risk of type 2 diabetes in the total population. Further adjustment for alcohol, smoking, physical activity, prevalent cardiovascular disease, serum total cholesterol, use of lipid-lowering medications, systolic BP, treatment for hypertension, C-reactive protein, oestradiol and testosterone did not substantially affect the association between DHEA and incident type 2 diabetes (per 1 unit natural log-transformed, HR 0.80, 95% CI 0.65, 0.99), but abolished the association between DHEAS and type 2 diabetes. Androstenedione was not associated with risk of type 2 diabetes, nor was DHEAS to DHEA ratio. CONCLUSIONS/INTERPRETATION DHEA serum levels might be an independent marker of type 2 diabetes.
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Affiliation(s)
- Adela Brahimaj
- Department of Epidemiology, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, the Netherlands.
| | - Taulant Muka
- Department of Epidemiology, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, the Netherlands
| | - Maryam Kavousi
- Department of Epidemiology, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, the Netherlands
| | - Joop S E Laven
- Division of Reproductive Medicine, Department of Obstetrics and Gynaecology, Erasmus MC, Rotterdam, the Netherlands
| | - Abbas Dehghan
- Department of Epidemiology, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, the Netherlands
| | - Oscar H Franco
- Department of Epidemiology, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, the Netherlands
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Mikeladze M, Hedrington MS, Joy N, Tate DB, Younk LM, Davis I, Davis SN. Acute Effects of Oral Dehydroepiandrosterone on Counterregulatory Responses During Repeated Hypoglycemia in Healthy Humans. Diabetes 2016; 65:3161-70. [PMID: 27486235 PMCID: PMC5033266 DOI: 10.2337/db16-0406] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 07/15/2016] [Indexed: 11/13/2022]
Abstract
We tested the hypothesis that acute administration of oral dehydroepiandrosterone (DHEA) during episodes of repeated hypoglycemia can prevent the development of hypoglycemia-associated neuroendocrine and autonomic failure in healthy humans. Twenty-seven individuals (16 men, 11 women) participated in two separate randomized, single-blind, 2-day protocols. Day 1 consisted of morning and afternoon 2-h hypoglycemic clamps (2.9 mmol/L) with 800 mg of DHEA or placebo administered before each clamp. Day 2 consisted of a single 2-h hypoglycemic clamp (2.9 mmol/L) following either DHEA (1,600 mg) or placebo. A 3-tritiated glucose was used to determine glucose kinetics during hypoglycemia on day 2. Antecedent hypoglycemia with placebo resulted in significant reductions of epinephrine, norepinephrine, glucagon, growth hormone, cortisol, endogenous glucose production, and lipolytic and symptom responses. During hypoglycemia on day 2, DHEA prevented blunting of all neuroendocrine, autonomic nervous system (ANS), metabolic, and symptom counterregulatory responses following hypoglycemia on day 1. In summary, DHEA can acutely preserve a wide range of key neuroendocrine, ANS, and metabolic counterregulatory homeostatic responses during repeated hypoglycemia. We conclude that DHEA may have acute effects to protect against hypoglycemia-associated neuroendocrine and autonomic failure in healthy humans.
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Affiliation(s)
- Maia Mikeladze
- Department of Medicine, University of Maryland, Baltimore, MD
| | | | - Nino Joy
- Department of Medicine, University of Maryland, Baltimore, MD
| | - Donna B Tate
- Department of Medicine, University of Maryland, Baltimore, MD
| | - Lisa M Younk
- Department of Medicine, University of Maryland, Baltimore, MD
| | - Ian Davis
- Department of Medicine, University of Maryland, Baltimore, MD
| | - Stephen N Davis
- Department of Medicine, University of Maryland, Baltimore, MD
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Espinosa De Ycaza AE, Rizza RA, Nair KS, Jensen MD. Effect of Dehydroepiandrosterone and Testosterone Supplementation on Systemic Lipolysis. J Clin Endocrinol Metab 2016; 101:1719-28. [PMID: 26885881 PMCID: PMC5399517 DOI: 10.1210/jc.2015-4062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Dehydroepiandrosterone (DHEA) and T hormones are advertised as antiaging, antiobesity products. However, the evidence that these hormones have beneficial effects on adipose tissue metabolism is limited. OBJECTIVE The objective of the study was to determine the effect of DHEA and T supplementation on systemic lipolysis during a mixed-meal tolerance test (MMTT) and an iv glucose tolerance test (IVGTT). DESIGN This was a 2-year randomized, double-blind, placebo-controlled trial. SETTING The study was conducted at a general clinical research center. PARTICIPANTS Sixty elderly women with low DHEA concentrations and 92 elderly men with low DHEA and bioavailable T concentrations participated in the study. INTERVENTIONS Elderly women received 50 mg DHEA (n = 30) or placebo (n = 30). Elderly men received 75 mg DHEA (n = 30), 5 mg T (n = 30), or placebo (n = 32). MAIN OUTCOME MEASURES In vivo measures of systemic lipolysis (palmitate rate of appearance) during a MMTT or IVGTT. RESULTS At baseline there was no difference in insulin suppression of lipolysis measured during MMTT and IVGTT between the treatment groups and placebo. For both sexes, a univariate analysis showed no difference in changes in systemic lipolysis during the MMTT or IVGTT in the DHEA group and T group when compared with placebo. There was no change in the results after adjusting for the resting energy expenditure, except for a small, but significant (P = .03) lowering of MMTT nadir palmitate rate of appearance in women who received DHEA. CONCLUSION In elderly individuals with concentrations of DHEA (men and women) or T (men) below the normal range for young adults, supplementation of these hormones has no effect on insulin suppression of systemic lipolysis.
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Affiliation(s)
| | - Robert A Rizza
- Division of Endocrinology, Endocrine Research Unit, Mayo Clinic, Rochester, Minnesota 55905
| | - K Sreekumaran Nair
- Division of Endocrinology, Endocrine Research Unit, Mayo Clinic, Rochester, Minnesota 55905
| | - Michael D Jensen
- Division of Endocrinology, Endocrine Research Unit, Mayo Clinic, Rochester, Minnesota 55905
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Goy B, Atmaca M, Aslan M, Ucler R, Alay M, Seven I, Demir H, Ozturk M. Relationship between serum DHEAS and oxidative stress levels of body mass index in healthy postmenopausal women. Redox Rep 2016; 21:61-6. [PMID: 26024430 PMCID: PMC6837362 DOI: 10.1179/1351000215y.0000000016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVES Menopause is a natural step in the process of aging. Postmenopausal women have decreased levels of antioxidants and increased oxidative stress, the latter of which plays an important role in atherogenesis. The aim of the present study was to evaluate the relationship of the body mass index (BMI) with serum catalase activity, malondialdehyde (MDA), and dehydroepiandrosterone sulfate (DHEAS) levels in healthy postmenopausal women and estimate whether the MDA/DHEAS ratio is a possible marker of oxidative stress for determining cardiovascular risk in these women. METHODS We investigated serum catalase activity, MDA, and DHEAS levels, parity history, age, and BMI in 96 healthy postmenopausal women aged 50-82 years. The serum MDA levels and catalase activity were measured spectrophotometrically. The serum DHEAS levels were measured using an enzyme-linked immunosorbent assay. The ratio percentage of the serum DHEAS levels to serum MDA levels was designated as a biomarker for oxidative stress. RESULTS The mean BMI of the patients was 31.72 ± 6.16 kg/m(2) (range = 20.5-47.94). The MDA/DHEAS ratio was significantly decreased in patients with a BMI over 30 compared to that of patients with a BMI between 25 and 30 (P = 0.025). Moreover, BMI was positively correlated with serum DHEAS levels (r = 0.285, P < 0.01) and negatively correlated with the MDA/DHEAS ratio (r = -0.241, P < 0.05) in postmenopausal women. Furthermore, BMI was observed to be a potential predictor of the MDA/DHEAS ratio based on covariance analysis (P = 0.039). CONCLUSIONS Our results indicate that healthy, obese, postmenopausal women have a decreased MDA/DHEAS ratio. Additionally, BMI was observed to be a potential predictor of the MDA/DHEAS ratio.
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Affiliation(s)
- Burhan Goy
- Department of Internal Medicine, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Murat Atmaca
- Department of Endocrinology and Metabolism, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Mehmet Aslan
- Department of Internal Medicine, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Rıfkı Ucler
- Department of Endocrinology and Metabolism, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Murat Alay
- Department of Endocrinology and Metabolism, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Ismet Seven
- Department of Internal Medicine, Medical Faculty, Yuzuncu Yil University, Van, Turkey
| | - Halit Demir
- Department of Chemistry, Division of Biochemistry, Faculty of Science, Yuzuncu Yil University, Van, Turkey
| | - Mustafa Ozturk
- Department of Endocrinology and Metabolism, Medical Faculty, Medipol University, Istanbul, Turkey
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Karbowska J, Kochan Z. Effects of DHEA on metabolic and endocrine functions of adipose tissue. Horm Mol Biol Clin Investig 2015; 14:65-74. [PMID: 25436721 DOI: 10.1515/hmbci-2013-0009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 04/30/2013] [Indexed: 11/15/2022]
Abstract
Dehydroepiandrosterone (DHEA) and its sulfate ester, DHEAS, are the major circulating adrenal steroids and serve as substrates for sex hormone biosynthesis. DHEA is effectively taken up by adipose tissue, where the concentrations of free DHEA are four to ten times higher than those found in the circulation. DHEA reduces adipose tissue mass and inhibits the proliferation and differentiation of adipocytes; it may also protect against obesity by lowering the activity of stearoyl-CoA desaturase 1 in fat cells. Recent studies demonstrate that DHEA stimulates triacylglycerol hydrolysis in adipose tissue by increasing the expression and activity of adipose triglyceride lipase and hormone-sensitive lipase, the key enzymes of lipolysis. DHEA has been shown to modulate insulin signaling pathways, enhance glucose uptake in adipocytes, and increase insulin sensitivity in patients with DHEA deficiency or abnormal glucose tolerance. Additionally, by suppressing the activity of 11β-hydroxysteroid dehydrogenase 1 in adipocytes, DHEA may promote intra-adipose inactivation of cortisol to cortisone. Several studies have demonstrated that DHEA may also regulate the expression and secretion of adipokines such as leptin, adiponectin, and resistin. The effects of DHEA on adipokine expression in adipose tissue are depot-specific, with visceral fat being the most responsive. The mechanisms underlying DHEA actions in adipose tissue are still unclear; however, they involve nuclear receptors such as androgen receptor and peroxisome proliferator-activated receptors γ and α. Because clinical trials investigating the effects of DHEA failed to yield consistent results, further studies are needed to clarify the role of DHEA in the regulation of human adipose tissue physiology.
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Affiliation(s)
- Joanna Karbowska
- Department of Biochemistry, Medical University of Gdansk, Gdansk, Poland.
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Akyürek N, Atabek ME, Eklioglu BS, Alp H. Is there a relationship between cardiovascular risk factors and dehydroepiandrosterone sulfate levels in childhood obesity? J Pediatr Endocrinol Metab 2015; 28:545-50. [PMID: 25381943 DOI: 10.1515/jpem-2014-0253] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 09/29/2014] [Indexed: 11/15/2022]
Abstract
AIM In this study, parameters of metabolic syndrome and dehydroepiandrosterone sulfate (DHEAS) levels in obese children and adolescents were evaluated and the associations between these factors were analyzed. METHOD One hundred obese and 40 healthy children/adolescents were included in the study. Pubertal stages, anthropometric and blood pressure measurements were recorded. Levels of fasting serum lipids, glucose, insulin, and DHEAS, and liver function tests were determined. Carotid intima-media thickness (CIMT) was measured using two-dimensional echocardiography. Steatorrhoeic hepatosis was evaluated using abdominal ultrasonography in the obese group. RESULTS Mean body weight, body mass index, waist, hip circumference, waist/hip ratio, homeostatic model assessment of insulin resistance, triglycerides, high-density lipoprotein cholesterol, alanine transferase, DHEAS, and CIMT values were significantly higher in the obese group than in the controls. DHEAS levels were found to be positively correlated with waist circumference, waist/hip ratio, and CIMT. CONCLUSION Early determination of metabolic and cardiac dysfunction in obese children is important for the prevention of future complications. Since in this study we found a strong association between DHEAS levels and obesity-related metabolic and cardiovascular risk factors, we believe that this may lead to increased interest in further studies of DHEAS in the search for new treatment approaches.
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Collomp K, Buisson C, Lasne F, Collomp R. DHEA, physical exercise and doping. J Steroid Biochem Mol Biol 2015; 145:206-12. [PMID: 24704255 DOI: 10.1016/j.jsbmb.2014.03.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 03/03/2014] [Accepted: 03/16/2014] [Indexed: 12/21/2022]
Abstract
The dehydroepiandrosterone (DHEA) and dehydroepiandrosterone sulfate (DHEA-S) concentrations during acute and chronic exercise (training) have been investigated only fairly recently. DHEA is generally preferred to DHEA-S for exploring the acute exercise repercussions in laboratory or field tests because of its shorter elimination half-life. Conversely, DHEA-S is preferred to estimate chronic adaptations. Both can be measured noninvasively in saliva, and it is therefore possible to follow these hormone responses in elite athletes during competitive events and in healthy and pathological populations, without imposing additional stress. Indeed, the correlation between saliva and serum concentrations is high for steroid hormones, both at rest and during exercise. In this review, we will first summarize the current knowledge on the DHEA/DHEA-S responses to exercise and examine the potential modulating factors: exercise intensity, gender, age, and training. We will then discuss the ergogenic effects that athletes expect from the exogenous administration of DHEA and the antidoping methods of analysis currently used to detect this abuse.
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Affiliation(s)
- K Collomp
- Laboratoire CIAMS, EA 4532, Université Paris Sud - Université Orléans, France; Département des Analyses, Agence Française de Lutte contre le Dopage, Chatenay-Malabry, France.
| | - C Buisson
- Département des Analyses, Agence Française de Lutte contre le Dopage, Chatenay-Malabry, France
| | - F Lasne
- Département des Analyses, Agence Française de Lutte contre le Dopage, Chatenay-Malabry, France
| | - R Collomp
- Laboratoire de Soins Pharmaceutiques et de Santé Publique, Pôle Pharmacie, CHU Nice, France
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Topsakal S, Akin F, Yerlikaya E, Erurker T, Dogu H. Dehydroepiandrosterone sulfate levels in Turkish obese patients. Eat Weight Disord 2014; 19:261-5. [PMID: 24715632 DOI: 10.1007/s40519-014-0120-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 03/20/2014] [Indexed: 01/20/2023] Open
Abstract
PURPOSE Obesity is well known to be linked to higher morbidity and mortality. Elevated plasma levels of free dehydroepiandrosterone (DHEA) are associated with reduced obesity and more limited accumulation of abdominal body fat. In contrast, the relationship between the DHEA sulfate ester (DHEAS) and adiposity is inconsistent and contradictory. METHODS The aim of this study was to compare DHEAS levels in obese Turkish individuals, 37 men and 246 women. A variety of fatness, hormone, and blood parameters were measured. RESULTS Statistically significant differences were found between male and female individuals with respect to weight, waist circumference, fat %, insulin, and DHEAS levels. CONCLUSIONS We found that in the Turkish population, while a correlation between obesity parameters and DHEAS levels exists in both female and male individuals, DHEAS levels are significantly higher in obese male individuals than in obese female individuals.
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Affiliation(s)
- Senay Topsakal
- Department of Endocrinology and Metabolism, Burdur State Hospital, Yeni Mahalle, Burdur, 15030, Turkey,
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Eleawa S, Bin-Jaliah I, Alkhateeb M, Bayoumy N, Alessa R, Sakr H. The impact of dehydroepiandrosterone on indomethacin-induced gastric lesions in rats. ACTA ACUST UNITED AC 2014; 101:77-87. [DOI: 10.1556/aphysiol.101.2014.1.9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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The relationship between endogenous androgens and body fat distribution in early and late postmenopausal women. PLoS One 2013; 8:e58448. [PMID: 23484029 PMCID: PMC3587576 DOI: 10.1371/journal.pone.0058448] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Accepted: 02/05/2013] [Indexed: 12/11/2022] Open
Abstract
Objectives To investigate the relationship between endogenous androgens and body fat distribution in early and late postmenopausal women. Materials and Methods We enrolled postmenopausal women consisting of an early group (≤5 years since menopause, n = 105) and a late group (≥10 years since menopause, n = 107). Each group was subdivided into normal weight (BMI <24 kg/m2) group, overweight and obese (BMI ≥24 kg/m2) group. Fasting total testosterone (T), dehydroepiandrosterone-sulfate (DHEA-S) and sex hormone-binding globulin (SHBG) levels were measured. Body fat distribution was evaluated by dual-energy X-ray absorptiometry (DEXA). Results Late postmenopausal women had a higher proportion of body fat than early postmenopausal women. The body fat of the overweight and obese women had a greater tendency to accumulate in the abdomen compared with the normal weight women both in early and late postmenopausal groups. The overweight and obese women had a higher free testosterone (FT) than the normal weight women in early postmenopausal women (P<0.05). In late postmenopausal women, the overweight and obese women had higher DHEA-S levels than normal weight women (P<0.05). No direct relationship was observed between the T levels and body fat distribution both in early and late postmenopausal groups (P>0.05).The FT in early postmenopausal women and the DHEA-S levels in late postmenopausal women correlated positively with the trunk/leg fat ratio (T/L) and the proportion of android fat whereas correlated negatively with the proportion of gynoid fat in the partial correlation and multiple linear regression analyses (all P<0.05). Conclusions Serum T levels do not correlate directly with body fat distribution, the FT in early postmenopausal women and DHEA-S levels in late postmenopausal women correlate positively with abdominal fat accumulation.
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Diamanti-Kandarakis E, Dunaif A. Insulin resistance and the polycystic ovary syndrome revisited: an update on mechanisms and implications. Endocr Rev 2012; 33:981-1030. [PMID: 23065822 PMCID: PMC5393155 DOI: 10.1210/er.2011-1034] [Citation(s) in RCA: 1036] [Impact Index Per Article: 86.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Polycystic ovary syndrome (PCOS) is now recognized as an important metabolic as well as reproductive disorder conferring substantially increased risk for type 2 diabetes. Affected women have marked insulin resistance, independent of obesity. This article summarizes the state of the science since we last reviewed the field in the Endocrine Reviews in 1997. There is general agreement that obese women with PCOS are insulin resistant, but some groups of lean affected women may have normal insulin sensitivity. There is a post-binding defect in receptor signaling likely due to increased receptor and insulin receptor substrate-1 serine phosphorylation that selectively affects metabolic but not mitogenic pathways in classic insulin target tissues and in the ovary. Constitutive activation of serine kinases in the MAPK-ERK pathway may contribute to resistance to insulin's metabolic actions in skeletal muscle. Insulin functions as a co-gonadotropin through its cognate receptor to modulate ovarian steroidogenesis. Genetic disruption of insulin signaling in the brain has indicated that this pathway is important for ovulation and body weight regulation. These insights have been directly translated into a novel therapy for PCOS with insulin-sensitizing drugs. Furthermore, androgens contribute to insulin resistance in PCOS. PCOS may also have developmental origins due to androgen exposure at critical periods or to intrauterine growth restriction. PCOS is a complex genetic disease, and first-degree relatives have reproductive and metabolic phenotypes. Several PCOS genetic susceptibility loci have been mapped and replicated. Some of the same susceptibility genes contribute to disease risk in Chinese and European PCOS populations, suggesting that PCOS is an ancient trait.
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Montalcini T, Migliaccio V, Ferro Y, Gazzaruso C, Pujia A. Androgens for postmenopausal women's health? Endocrine 2012; 42:514-20. [PMID: 22581204 DOI: 10.1007/s12020-012-9692-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Accepted: 04/30/2012] [Indexed: 12/24/2022]
Abstract
Obesity, metabolic syndrome, and diabetes are becoming a leading health concern in the developed Countries, due to their link to cardiovascular disease. These conditions are common in women in the post-menopausal period. Unfortunately, actual lifestyle change strategy fail to prevent cardiovascular events for several reasons, thus specific medications are needed. In addition, it was showed an increased cardiovascular diseases and breast cancer risk in postmenopausal women taking estrogens alone or with progestin, thus the optimal therapy for the prevention of chronic disease in women is still lacking. Androgens exert different actions on organs like adipose tissue, brain, bone, and on cardiovascular system. However, a debate still exists on the positive role of androgens on human health, especially in women. Furthermore, the vascular effects of androgens remain poorly understood and have been controversial for a long time. Sex hormones are important determinants of body composition. Aging is, often, accompanied by a decrease in free testosterone levels, a concomitant reduction in muscle mass and an increase in fat mass. Furthermore, numerous studies showed that total serum testosterone levels were inversely related to the atherosclerosis disease incidence in postmenopausal women. New therapeutic targets may, therefore, arise understanding how androgen could influence the fat distribution, the metabolic disease onset, the vascular reactivity and cardiovascular risk, in both sex.
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Affiliation(s)
- Tiziana Montalcini
- Clinical Nutrition Unit, Department of Medical and Surgical Science, University Magna Graecia, Catanzaro, Italy.
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Karbowska J, Kochan Z. Fat-reducing effects of dehydroepiandrosterone involve upregulation of ATGL and HSL expression, and stimulation of lipolysis in adipose tissue. Steroids 2012; 77:1359-65. [PMID: 22951290 DOI: 10.1016/j.steroids.2012.08.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 08/07/2012] [Indexed: 12/31/2022]
Abstract
Dehydroepiandrosterone (DHEA) reduces body fat in rodents and humans, and increases glycerol release from isolated rat epididymal adipocytes and human visceral adipose tissue explants. It suggests that DHEA stimulates triglyceride hydrolysis in adipose tissue; however, the mechanisms underlying this action are still unclear. We examined the effects of DHEA on the expression of adipose triglyceride lipase (ATGL) and hormone-sensitive lipase (HSL), the key enzymes of lipolysis, in rat epididymal white adipose tissue (eWAT). Male Wistar rats were fed a diet containing 0.6% DHEA for 2 weeks and eWAT was analyzed for mRNA and protein expression of ATGL and HSL, as well as mRNA expression of peroxisome proliferator-activated receptor γ 2 (PPARγ2) and its downstream target fatty acid translocase (FAT). Glycerol release from eWAT explants and serum free fatty acids (FFA) were also measured. Rats that received DHEA gained less weight, had 23% lower eWAT mass and 31% higher serum FFA levels than controls. Cultured explants of eWAT from DHEA-treated rats released 81% more glycerol than those from control rats. DHEA administration upregulated ATGL mRNA (1.62-fold, P<0.05) and protein (1.78-fold, P<0.05) expression as well as augmented HSL mRNA levels (1.36-fold, P<0.05) and Ser660 phosphorylation of HSL (2.49-fold, P<0.05). PPARγ2 and FAT mRNA levels were also increased in DHEA-treated rats (1.61-fold, P<0.05 and 2.16-fold, P<0.05; respectively). Moreover, ATGL, HSL, and FAT mRNA levels were positively correlated with PPARγ2 expression. This study demonstrates that DHEA promotes lipid mobilization in adipose tissue by increasing the expression and activity of ATGL and HSL. The effects of DHEA appear to be mediated, at least in part, via PPARγ2 activation, which in turn upregulates ATGL and HSL gene expression.
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Affiliation(s)
- Joanna Karbowska
- Department of Biochemistry, Medical University of Gdansk, Debinki 1, 80-211 Gdansk, Poland.
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Physiological levels of estradiol correlate with lipid / lipoprotein profiles in healthy men. Environ Health Prev Med 2012; 4:81-6. [PMID: 21432177 DOI: 10.1007/bf02931999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/1998] [Accepted: 03/24/1999] [Indexed: 10/21/2022] Open
Abstract
In this cross-sectional study, the relationships of the physiological levels of estradiol (E2) and dehydroepiandrosterone-sulfate (DHEA-S) to the lipid and lipoprotein profiles were investigated in 212 apparently healthy men aged from 18 to 59 years old. These subjects were divided into tertiles according to the levels of E2 and DHEA-S, respectively. We performed one-way analysis of variance and analysis of co-variance controlling for age, body mass index, percent body fat, waist to hip ratio, maximal oxygen uptake, alcohol and cigarette consumptions as confounding factors.A lower E2 level was associated with higher concentrations of total cholesterol (TC) and low density lipoprotein cholesterol. A lower DHEA-S level was associated with a lower concentration of high density lipoprotein cholesterol (HDLC) and a higher ratio of TC / HDLC. These correlations remained significant after adjusting for the above confounding factors. Neither free testosterone nor sex hormone-binding globulin was associated with the lipids and lipoproteins. These results suggest that higher levels of E2 and DHEA-S, at least in physiological concentrations, are related to the favorable lipid and lipoprotein levels in men.
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Gómez-Santos C, Hernández-Morante JJ, Tébar FJ, Granero E, Garaulet M. Differential effect of oral dehydroepiandrosterone-sulphate on metabolic syndrome features in pre- and postmenopausal obese women. Clin Endocrinol (Oxf) 2012; 77:548-54. [PMID: 22136516 DOI: 10.1111/j.1365-2265.2011.04306.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVE To analyze the effect in obese pre- and postmenopausal women of a daily dose of 100 mg dehydroepiandrosterone-sulphate (DHEA-S) provided over a period of 3 months as replacement therapy against metabolic syndrome. CONTEXT Although DHEA-S appears to be effective against certain features of metabolic syndrome, its usefulness against this syndrome as a whole has not been evaluated to date. DESIGN/PATIENTS A randomized, double-blind placebo-controlled trial was conducted involving 61 postmenopausal women, who received DHEA-S (n = 41) or placebo (n = 20) for 3 months. The effect of DHEA-S treatment on the same postmenopausal women was compared with the effects observed in a group of premenopausal women (n = 20). MEASUREMENTS Anthropometric measurements were taken at the beginning and at the end of the treatment. Similarly, different parameters that define metabolic syndrome and other cardiometabolic variables were determined. RESULTS Dehydroepiandrosterone-sulphate replacement produced weight loss in the obese women studied. Moreover, waist circumference, glucose and systolic and diastolic blood pressure, among other metabolic syndrome parameters, improved in the postmenopausal group, who showed a significant reduction in the total metabolic syndrome score (P < 0·05). In contrast, in premenopausal women, the effect of DHEA-S was limited to obesity parameters, and no effect was observed on metabolic syndrome components. No significant changes were evident in the placebo group. CONCLUSIONS An oral dose of DHEA-S is useful for weight loss. In obese postmenopausal women, the hormone significantly improves plasma biochemical levels and anthropometric characteristics, leading to a better metabolic profile, which highlights the usefulness of this therapy against metabolic syndrome in this group of women.
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Affiliation(s)
- Cecilia Gómez-Santos
- Department of Physiology, Faculty of Biology, University of Murcia, Murcia, Spain
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Zumoff B, Strain GW, Heymsfield SB, Lichtman S. A Randomized Double-Blind Crossover Study of the Antiobesity Effects of Etiocholanedione. ACTA ACUST UNITED AC 2012; 2:13-8. [PMID: 16353603 DOI: 10.1002/j.1550-8528.1994.tb00038.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Etiocholanedione (ED), a natural metabolite of dehydroepiandrosterone, has antiobesity effects in animals when given orally and is nontoxic. We carried out a trial of oral ED in obese humans. In a 20-week randomized double-blind crossover study, 14 subjects lost significantly more weight and body fat during treatment with oral ED, 4 gm daily, than during placebo administration. Mean weight loss during ED administration was 2.8 +/- 5.5 kilograms, which was equivalent to 0.53 +/- 0.91 kilograms per week per 100 kilograms of body fat; mean weight change during placebo administration was essentially zero: +0.21 +/- 4.2 kg, or +0.04 +/- 0.74 kg/wk/100 kg body fat. The difference between the weight changes in the two periods was significant: for delta kg, P < 0.05; for delta kg/wk/100 kg body fat, P < 0.03. Densitometric measurement of body fat content showed that the mean weight loss coincided almost exactly with the mean decrease in fat content; thus, over the 10-week period of ED administration, the mean fat loss was about 5% of the initial body fat content. Three of the obese subjects had strikingly greater fat loss, about 18%, 19%, and 25% of the initial body fat content. There were no significant subjective or objective side effects of ED administration.
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Affiliation(s)
- B Zumoff
- Division of Endocrinology and Metabolism, Beth Israel Medical Center, First Ave. at 16th St., New York, NY 10003, USA
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Kohtz AS, Frye CA. Dissociating behavioral, autonomic, and neuroendocrine effects of androgen steroids in animal models. Methods Mol Biol 2012; 829:397-431. [PMID: 22231829 DOI: 10.1007/978-1-61779-458-2_26] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Developments in behavioral assessment, autonomic and/or baseline reactivity, psychopharmacology, and genetics, have contributed significantly to the assessment of performance-enhancing drugs in animal models. Particular classes of steroid hormones: androgenic steroids are of interest. Anecdotally, the performance enhancing effects of androgens are attributed to anabolic events. However, there is a discrepancy between anecdotal evidence and investigative data. While some androgen steroids may promote muscle growth (myogenesis), effects of androgens on performance enhancement are not always seen. Indeed, some effects of androgens on performance may be attributable to their psychological and cardiovascular effects. As such, we consider androgen effects in terms of their behavioral, autonomic, and neuroendocrine components. Techniques are discussed in this chapter, some of which are well established, while others have been more recently developed to study androgen action. Androgens may be considered for their positive impact, negative consequence, or psychotropic properties. Thus, this review aims to elucidate some of the effects and/or mechanisms of androgens on behavioral, autonomic, and/or neuroendocrine assessment that may underlie their controversial performance enhancing effects.
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Affiliation(s)
- Amy S Kohtz
- Department of Psychology, The University at Albany-SUNY, Albany, NY, USA
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Chompoo J, Upadhyay A, Gima S, Fukuta M, Tawata S. Antiatherogenic properties of acetone extract of Alpinia zerumbet seeds. Molecules 2012; 17:6237-48. [PMID: 22634836 PMCID: PMC6268935 DOI: 10.3390/molecules17066237] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 05/17/2012] [Accepted: 05/18/2012] [Indexed: 11/23/2022] Open
Abstract
Oxidation of low-density lipoprotein (LDL) is the principal risk factor for the development of atherosclerosis. In this study, we used several methods to investigate the ability of the acetone extract from rhizomes, stems, leaves, flowers, pericarps and seeds of Alpinia zerumbet to inhibit atherosclerosis in vitro. The seed extract had the strongest activity against tyrosinase, pancreatic lipase (PL), 15-lipoxygenase (15-LO) and LDL oxidation activities (IC50 = 2.30 ± 0.02, 5.00 ± 0.07, 1.29 ± 0.07 and 15.40 ± 0.86 µg/mL, respectively), amongst all different parts. It also had similar effects to the positive controls. Most of the extracts showed partial agonistic properties towards estrogenic activity. Cholest-4-ene-3,6-dione, a steroid present only in the seed extract seems to be the compound responsible for these activities. The results showed that cholest-4-ene-3,6-dione had similar ability to curcumin and quercetin against PL and LDL oxidation (IC50 = 19.50 ± 1.17 and 16.12 ± 1.43 µg/mL, respectively). Furthermore, cholest-4-ene-3,6-dione (IC50 = 34.21 ± 1.31 µg/mL) had higher inhibition against 15-LO than quercetin (IC50 = 54.79 ± 1.12 µg/mL).
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Affiliation(s)
- Jamnian Chompoo
- Department of Bioscience and Biotechnology, The United Graduate School of Agricultural Science, Kagoshima University, Kagoshima 890-0065, Japan; (J.C.); (A.U.)
| | - Atul Upadhyay
- Department of Bioscience and Biotechnology, The United Graduate School of Agricultural Science, Kagoshima University, Kagoshima 890-0065, Japan; (J.C.); (A.U.)
| | - Shinichi Gima
- Instrumental Research Center, University of the Ryukyus, Senbaru 1, Nishihara-cho, Okinawa 903-0213, Japan;
| | - Masakazu Fukuta
- Department of Bioscience and Biotechnology, Faculty of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara-cho, Okinawa 903-0219, Japan;
| | - Shinkichi Tawata
- Department of Bioscience and Biotechnology, Faculty of Agriculture, University of the Ryukyus, Senbaru 1, Nishihara-cho, Okinawa 903-0219, Japan;
- Author to whom correspondence should be addressed; ; Tel.: +81-98-895-8803; Fax: +81-98-895-8734
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Tagawa N, Minamitani E, Yamaguchi Y, Kobayashi Y. Alternative mechanism for anti-obesity effect of dehydroepiandrosterone: possible contribution of 11β-hydroxysteroid dehydrogenase type 1 inhibition in rodent adipose tissue. Steroids 2011; 76:1546-53. [PMID: 21945397 DOI: 10.1016/j.steroids.2011.09.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 08/21/2011] [Accepted: 09/06/2011] [Indexed: 11/24/2022]
Abstract
Dehydroepiandrosterone (DHEA) has been suggested to have an anti-obesity effect; however, the mechanism underlying this effect remains unclear. The effect of DHEA on adipocytes opposes that of glucocorticoids, which potentiate adipogenesis. The key to the intracellular activation of glucocorticoids in adipocytes is 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1), which catalyses the production of active glucocorticoids (cortisol in humans and corticosterone in rodents) from an inactive 11-keto form (cortisone in humans and 11-dehydrocorticosterone in rodents). In humans and rodents, intracellular glucocorticoid reactivation is exaggerated in obese adipose tissue. Using differentiated 3T3-L1 adipocytes, we demonstrated that DHEA inhibited about 15.6% of 11β-HSD1 activity at a concentration of 1 μM within 10min. Inhibition was also observed in a cell-free system composed of microsomes prepared from rat adipose tissue and NADPH, a coenzyme of 11β-HSD1. A kinetic study revealed that DHEA acted as a non-competitive inhibitor of 11β-HSD1. Moreover, conversion from DHEA to estrogens was not observed by sensitive semi-micro HPLC equipped with electrochemical detector. These results indicate that the inhibition of 11β-HSD1 by DHEA depends on neither the transcriptional pathway nor the nonspecific manner. This is the first demonstration that the anti-obesity effect of DHEA is exerted by non-transcriptional inhibition of 11β-HSD1 in rodent adipocytes.
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Affiliation(s)
- Noriko Tagawa
- Department of Medical Biochemistry, Kobe Pharmaceutical University, 4-19-1 Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan.
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Gómez-Santos C, Larqué E, Granero E, Hernández-Morante JJ, Garaulet M. Dehydroepiandrosterone-sulphate replacement improves the human plasma fatty acid profile in plasma of obese women. Steroids 2011; 76:1425-32. [PMID: 21840329 DOI: 10.1016/j.steroids.2011.07.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 07/19/2011] [Accepted: 07/20/2011] [Indexed: 11/19/2022]
Abstract
DHEA-S treatment is used as an anti-aging and anti-obesity hormone therapy in adults; however, it mechanisms of action are not clearly elucidated. The objective of the present work was to analyze the effect of a replacement therapy, which included a daily single oral dose of DHEA-S for three months, on the composition of human plasma fatty acids (FAs) in obese women. In the first study, a randomized, double-blind, placebo-controlled trial was conducted involving 61 postmenopausal women, who were assigned to receive 100mg/day of DHEA-S (n = 41) or placebo (n = 20) orally for 3 months. In a second study, the effect of DHEA-S treatment on postmenopausal obese women (n = 41) was compared to that in premenopausal obese women (n = 20). Blood samples were collected at the beginning and at the end of the treatment. Plasma FAs were analyzed by gas chromatography. DHEA-S treatment produced significant changes in plasma FAs of both post- and premenopausal women with a reduction of total saturated FAs (SFA) as well as an increase in n-6 polyunsaturated FA (PUFA). Particularly, in premenopausal women the DHEA-S treatment also increased the plasma n-3 PUFA percentage. Regarding estimation of desaturase activity, our data showed that Δ6-desaturase was significantly decreased in postmenopausal women after DHEA-S treatment, whereas Δ5-desaturase was increased in the premenopausal group. In conclusion, DHEA-S treatment in obese women modifies plasma FA composition towards a potentially better metabolic profile, mainly by decreasing SFA and increasing n-6 PUFA in both postmenopausal and premenopausal women.
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Affiliation(s)
- C Gómez-Santos
- Department of Physiology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
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Traish AM, Kang HP, Saad F, Guay AT. Dehydroepiandrosterone (DHEA)—A Precursor Steroid or an Active Hormone in Human Physiology (CME). J Sex Med 2011; 8:2960-82; quiz 2983. [DOI: 10.1111/j.1743-6109.2011.02523.x] [Citation(s) in RCA: 151] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Sato K, Iemitsu M, Aizawa K, Mesaki N, Fujita S. Increased muscular dehydroepiandrosterone levels are associated with improved hyperglycemia in obese rats. Am J Physiol Endocrinol Metab 2011; 301:E274-80. [PMID: 21285401 DOI: 10.1152/ajpendo.00564.2010] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study was undertaken to assess the effects of dehydroepiandrosterone (DHEA) administration and exercise training on muscular DHEA and 5α-dihydrotestosterone (DHT) levels and hyperglycemia in diet-induced obese and hyperglycemic rats. After 14 wk of a high-sucrose diet, obese male Wistar rats were assigned randomly to one of three 6-wk regimens: control, DHEA treatment, or exercise training (running at 25 m/min for 1 h, 5 days/wk; n = 10 each group). Results indicate that either 6 wk of DHEA treatment or exercise training significantly attenuated serum insulin and fasting glucose levels compared with the control group. Plasma and muscle concentrations of DHEA and DHT and expression levels of 5α-reductase were significantly higher in the DHEA-treated and exercise-training groups. Moreover, both DHEA administration and exercise training upregulated GLUT4 translocation with concomitant increases in protein kinase B and protein kinase Cζ/λ phosphorylation. Muscle DHEA and DHT concentrations closely correlated with blood glucose levels (DHEA treatment: r = -0.68, P < 0.001; exercise training: r = -0.65, P < 0.001), serum insulin levels, and activation of the GLUT4-regulated signaling pathway. Thus, increased levels of muscle sex steroids may contribute to improved fasting glucose levels via upregulation of GLUT4-regulated signaling in diet-induced obesity and hyperglycemia.
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Affiliation(s)
- Koji Sato
- Faculty of Sport and Health Science, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu, Shiga, Japan
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Karavitakis M, Komninos C, Simaioforidis V, Kontos S, Lefakis G, Politis V, Koritsiadis G, Konstantellou K, Doumanis G. The relationship between androgens, regulators of collagen metabolism, and Peyronie's disease: a case control study. J Sex Med 2011; 7:4011-7. [PMID: 20584122 DOI: 10.1111/j.1743-6109.2010.01915.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Changes in collagen metabolism have been postulated to play a pivotal role in the pathogenesis of Peyronie's Disease (PD). Androgens such as dehydroepiandrosterone sulfate (DHEA-S) and testosterone influence collagen metabolism by modulating the activity of matrix metalloproteases (MMP) and tissue inhibitors of metalloproteases (TIMP). AIM The aim of this study was to evaluate the interrelationship between androgens (DHEA-S and testosterone), key regulators of collagen metabolism such as insulin-like growth factor (IGF) 1 and IGF Binding Protein 3 (IGF-BP3), the MMP/TIMP system, and PD. METHODS Age matched PD patients (14) and healthy men (10) who acted as controls were recruited. Blood samples were collected from all subjects in the early morning hours after an overnight fast. MAIN OUTCOME MEASURES Serum levels of testosterone, sex hormone binding globulin, DHEA-S, 3-α-androstanediol glucuronide, pro-MMP-1, MMP-1, MMP-2, TIMP-1, TIMP-2, IGF-1 and IGF-BP3 were measured in both groups. Statistical methods included univariate, bivariate, and multivariate regression models. RESULTS Levels of DHEA-S (114.5 vs. 169.5 µg/dL; p = 0.03), IGF-BP3 (2.96 vs. 3.79 µg/mL; p = 0.01), and TIMP-1 (173.1 vs. 195 ng/mL; p = 0.01) were significantly lower in PD patients. In contrast, the level of TIMP-2 (102 vs. 85 ng/mL; p = 0.001) was significantly lower in the control group. Using stepwise regression analysis, only TIMP-2 (p < 0.001) and DHEA-S (p = 0.04) were significantly related to PD in the final model (R(2) = 0.63). TIMP-1 and DHEA-S (r = 0.55, p < 0.05) were positively correlated in the PD group, whereas IGF-1 and testosterone (r = -0.54, p < 0.05), and IGF-BP3 and testosterone (r = -0.68, p < 0.05) were negatively correlated in PD patients. CONCLUSIONS Our findings suggest that decreased levels of adrenal androgens may be implicated in the pathogenesis of PD. The mechanism and clinical relevance of this observation remain to be established.
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Affiliation(s)
- Markos Karavitakis
- Department of Urology Laboratory of Hormonology, St Panteleimon General Hospital of Nikaia, Piraeus, Greece.
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Camporez JPG, Akamine EH, Davel AP, Franci CR, Rossoni LV, Carvalho CRDO. Dehydroepiandrosterone protects against oxidative stress-induced endothelial dysfunction in ovariectomized rats. J Physiol 2011; 589:2585-96. [PMID: 21486789 DOI: 10.1113/jphysiol.2011.206078] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Cardiovascular disease is less frequent in premenopausal women than in age-matched men or postmenopausal women. Moreover, the marked age-related decline in serum dehydroepiandrosterone (DHEA) level has been associated to cardiovascular disease. The aim of this study was to evaluate the effects of DHEA treatment on vascular function in ovariectomized rats. At 8 weeks of age, female Wistar rats were ovariectomized (OVX) or sham (SHAM) operated and 8 weeks after surgery both groups were treated with vehicle or DHEA (10mg kg⁻¹ week⁻¹) for 3 weeks. Aortic rings were used to evaluate the vasoconstrictor response to phenylephrine (PHE) and the relaxation responses to acetylcholine (ACh) and sodium nitroprusside (SNP). Tissue reactive oxygen species (ROS) production and SOD, NADPH oxidase and eNOS protein expression were analysed. PHE-induced contraction was increased in aortic rings from OVX compared to SHAM, associated with a reduction in NO bioavailability. Furthermore, the relaxation induced by ACh was reduced in arteries from OVX, while SNP relaxation did not change. The incubation of aortic rings with SOD or apocynin restored the enhanced PHE-contraction and the impaired ACh-relaxation only in OVX. DHEA treatment corrected the increased PHE contraction and the impaired ACh-induced relaxation observed in OVX by an increment in NO bioavailability and decrease in ROS production. Besides, DHEA treatment restores the reduced Cu/Zn-SOD protein expression and eNOS phosphorylation and the increased NADPH oxidase protein expression in the aorta of OVX rats. The present results suggest an important action of DHEA, improving endothelial function in OVX rats by acting as an antioxidant and enhancing the NO bioavailability.
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Affiliation(s)
- João Paulo Gabriel Camporez
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of S˜ao Paulo, SP, Brazil
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Adam T, Schamarek I, Springer EA, Havel PJ, Epel EE. Adiponectin and negative mood in healthy premenopausal and postmenopausal women. Horm Behav 2010; 58:699-704. [PMID: 20483360 DOI: 10.1016/j.yhbeh.2010.05.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2010] [Revised: 05/07/2010] [Accepted: 05/09/2010] [Indexed: 10/19/2022]
Abstract
Negative mood and stress are associated with cardiovascular and metabolic disease. There are likely many physiological mechanisms underlying the poor health outcomes. The relationship of psychological states (negative mood, life stress, and stress-responsive hormones) and adiponectin, an adipokine that promotes insulin sensitivity, was investigated in two separate studies. The two groups of participants included 52 healthy, premenopausal women, and 63 postmenopausal women with a range of stress levels. The relationship between adiponectin and psychological state (perceived stress and negative mood) was examined cross-sectionally in both groups of participants, but also prospectively (1 year later) in the group of postmenopausal women. In premenopausal women, negative mood and nocturnal urinary epinephrine were significantly related to adiponectin, independent of BMI. In postmenopausal women, negative mood was not associated with adiponectin cross-sectionally, but negative mood was a significant predictor for lower levels of adiponectin 1 year later, independent of initial adiponectin concentrations and changes in body mass index. Lastly, having a depressive disorder was related to lower adiponectin. As adiponectin levels are associated with insulin resistance, obesity, and diabetes mellitus, these findings suggest there may be an adiponectin-mediated pathway explaining in part how negative mood affects metabolic health. Mechanistic studies are needed to explore this potential relationship further.
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Affiliation(s)
- Tanja Adam
- Department of Preventive Medicine, University of Southern California, CSC 213, Los Angeles, CA 90033, USA
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Prabhu A, Xu Q, Manigrasso MB, Biswas M, Flynn E, lliescu R, Lephart ED, Maric C. Expression of aromatase, androgen and estrogen receptors in peripheral target tissues in diabetes. Steroids 2010; 75:779-87. [PMID: 20064538 PMCID: PMC2891268 DOI: 10.1016/j.steroids.2009.12.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Revised: 12/23/2009] [Accepted: 12/29/2009] [Indexed: 01/28/2023]
Abstract
Our previous studies have shown that diabetes in the male streptozotocin (STZ)-induced diabetic rat is characterized by a decrease in circulating testosterone and concomitant increase in estradiol levels. Interestingly, this increase in estradiol levels persists even after castration, suggesting extra-testicular origins of estradiol in diabetes. The aim of the present study was to examine whether other target organs of diabetes may be sources of estradiol. The study was performed in male Sprague-Dawley non-diabetic (ND), STZ-induced diabetic (D) and STZ-induced diabetic castrated (Dcas) rats (n=8-9/group). 14 weeks of diabetes was associated with decreased testicular (ND, 26.3+/-4.19; D, 18.4+/-1.54; P<0.05), but increased renal (ND, 1.83+/-0.92; D, 7.85+/-1.38; P<0.05) and ocular (D, 23.4+/-3.66; D, 87.1+/-28.1; P<0.05) aromatase activity. This increase in renal (Dcas, 6.30+/-1.25) and ocular (Dcas, 62.7+/-11.9) aromatase activity persisted after castration. The diabetic kidney also had increased levels of tissue estrogen (ND, 0.31+/-0.01; D, 0.51+/-0.11; Dcas, 0.45+/-0.08) as well as estrogen receptor alpha protein expression (ND, 0.63+/-0.09; D, 1.62+/-0.28; Dcas, 1.38+/-0.20). These data suggest that in male STZ-induced diabetic rats, tissues other than the testis may become sources of estradiol. In particular, the diabetic kidney appears to produce estradiol following castration, a state that is associated with a high degree or renal injury. Overall, our data provides evidence for the extra-testicular source of estradiol that in males, through an intracrine mechanism, may contribute to the development and/or progression of end-organ damage associated with diabetes.
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Affiliation(s)
- Anjali Prabhu
- Department of Medicine, Georgetown University Medical Center, 4000 Reservoir road NW, Washington, DC, 20057
| | - Qin Xu
- Department of Medicine, Georgetown University Medical Center, 4000 Reservoir road NW, Washington, DC, 20057
| | - Michaele B. Manigrasso
- Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216
| | - Moumita Biswas
- Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216
| | - Elizabeth Flynn
- Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216
| | - Radu lliescu
- Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216
- Women's Health Research Center, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216
| | - Edwin D. Lephart
- Department of Physiology and Developmental Biology and The Neuroscience Center, Brigham Young University, Provo, UT, 84602
| | - Christine Maric
- Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216
- Women's Health Research Center, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS, 39216
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Greydanus DE, Patel DR. Sports doping in the adolescent: the Faustian conundrum of Hors de Combat. Pediatr Clin North Am 2010; 57:729-50. [PMID: 20538154 DOI: 10.1016/j.pcl.2010.02.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The drive toward success in sports and the need for a cosmetically acceptable appearance have driven many adolescents to take a wide variety of so-called doping substances. The consumption of these chemicals in the hope and hype of improved sports performance, fueled by the easing of government restrictions on their proof of safety and efficacy, has resulted in an explosion of so-called ergogenic products available to our youth. Agents that have been used include anabolic steroids, anabolic-like agents, designer steroids, creatine, protein and amino acid supplements, minerals, antioxidants, stimulants, blood doping, erythropoietin, beta-blockers, and others. The use of these agents has considerable potential to cause physical and psychological damage. Use and misuse of drugs in this sports doping process should be discouraged. This discussion reviews some of the agents that are currently being used. Clinicians providing sports medicine care to youth, whether through anticipatory guidance or direct sports medicine management, should educate their young patients about the hype and hyperbole of these products that may keep them out instead of in the game at considerable financial cost to the unwary consumer.
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Affiliation(s)
- Donald E Greydanus
- Department of Pediatrics & Human Development, Michigan State University College of Human Medicine, Kalamazoo, MI 49008-1284, USA.
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Ritsner MS. Pregnenolone, dehydroepiandrosterone, and schizophrenia: alterations and clinical trials. CNS Neurosci Ther 2010; 16:32-44. [PMID: 20070787 DOI: 10.1111/j.1755-5949.2009.00118.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Neurosteroids, such as pregnenolone (PREG), dehydroepiandrosterone (DHEA), and their sulfates (PREGS and DHEAS) are reported to have a modulatory effect on neuronal excitability and synaptic plasticity. They also have many other functions associated with neuroprotection, response to stress, mood regulation, and cognitive performance. Furthermore, these neurosteroids have been linked to, and their levels are altered in, neuropsychiatric disorders. This review highlights what is currently known about the metabolism and mode of action of PREG and DHEA, as well as about alterations of these neurosteroids in schizophrenia. This review also provides substantial information about clinical trials with DHEA and PREG augmentation with of antipsychotic agents in schizophrenia.
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Affiliation(s)
- Michael S Ritsner
- Psychiatry Department, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, and Sha'ar Menashe Mental Health Center, Israel.
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Hahner S, Allolio B. Dehydroepiandrosterone to enhance physical performance: myth and reality. Endocrinol Metab Clin North Am 2010; 39:127-39, x. [PMID: 20122454 DOI: 10.1016/j.ecl.2009.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Dehydroepiandrosterone (DHEA) is secreted by the zona reticularis of the adrenal cortex and is converted into potent sex steroids in peripheral target cells. As oral DHEA administration can lead to dose-dependent increases in circulating androgens, which may reach high supraphysiologic levels in women, it has been included in the list of prohibited substances by the World Anti-Doping Agency (WADA). However, evidence for an ergogenic activity of DHEA is still largely nonexistent. Randomized trials in elderly subjects with an age-dependent decrease in DHEA have provided little or no evidence for enhanced physical performance after long-term administration of DHEA, 50 mg/d, and smaller short-term studies in healthy male athletes using higher doses were completely negative. Thus the widely perceived performance-enhancing activity of DHEA is still more myth than reality. However, because studies in female athletes are still lacking, an ergogenic activity of high-dose DHEA in this population cannot be excluded but is expected to be associated with adverse events like hirsutism, acne, and alopecia.
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Affiliation(s)
- Stefanie Hahner
- Department of Medicine I, University of Würzburg, Würzburg, Germany
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Kreider RB, Wilborn CD, Taylor L, Campbell B, Almada AL, Collins R, Cooke M, Earnest CP, Greenwood M, Kalman DS, Kerksick CM, Kleiner SM, Leutholtz B, Lopez H, Lowery LM, Mendel R, Smith A, Spano M, Wildman R, Willoughby DS, Ziegenfuss TN, Antonio J. ISSN exercise & sport nutrition review: research & recommendations. J Int Soc Sports Nutr 2010. [PMCID: PMC2853497 DOI: 10.1186/1550-2783-7-7] [Citation(s) in RCA: 161] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Sports nutrition is a constantly evolving field with hundreds of research papers published annually. For this reason, keeping up to date with the literature is often difficult. This paper is a five year update of the sports nutrition review article published as the lead paper to launch the JISSN in 2004 and presents a well-referenced overview of the current state of the science related to how to optimize training and athletic performance through nutrition. More specifically, this paper provides an overview of: 1.) The definitional category of ergogenic aids and dietary supplements; 2.) How dietary supplements are legally regulated; 3.) How to evaluate the scientific merit of nutritional supplements; 4.) General nutritional strategies to optimize performance and enhance recovery; and, 5.) An overview of our current understanding of the ergogenic value of nutrition and dietary supplementation in regards to weight gain, weight loss, and performance enhancement. Our hope is that ISSN members and individuals interested in sports nutrition find this review useful in their daily practice and consultation with their clients.
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Dehydroepiandrosterone-Sulfate Modifies Human Fatty Acid Composition of Different Adipose Tissue Depots. Obes Surg 2010; 21:102-11. [DOI: 10.1007/s11695-009-0064-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2009] [Accepted: 12/15/2009] [Indexed: 01/22/2023]
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