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A systematic review of the impact of 7-keto-DHEA on body weight. Arch Gynecol Obstet 2022:10.1007/s00404-022-06884-8. [PMID: 36566478 DOI: 10.1007/s00404-022-06884-8] [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: 07/17/2022] [Accepted: 10/31/2022] [Indexed: 12/26/2022]
Abstract
7-Keto-DHEA has been commercially advertised as a dietary supplement to support weight loss. The objective of the present systematic review it to summarize the evidence supporting the use of 7-keto-DHEA in overweight and obese population. The systematic search was conducted in Medline, Embase, Cochrane Library, CINAHL, Web of Science, Scopus, ICTRP, and ClinicalTrials.gov. Additionally, reference lists of eligible studies were considered, and authors of relevant studies were contacted. Two authors independently screened the studies against the inclusion criteria and assessed their risk of bias. In total, 4 out of 686 studies were included in the review. They all held a low risk of bias. Half of them showed a significant reduction in body weight. One study found a decrease in body fat percentage and another one reported a decrease in BMI. Two studies stated an increase in resting metabolic rate. No serious adverse effects were reported. Various possible mechanisms in favor of weight loss are discussed; however, with the evidence currently available, no clear answer can be given regarding 7-keto-DHEA and weight loss. Further studies need to be conducted to clarify the efficacy and safety of this drug before it can be recommended for therapeutic use.
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Wang F, He Y, O Santos H, Sathian B, C Price J, Diao J. The effects of dehydroepiandrosterone (DHEA) supplementation on body composition and blood pressure: A meta-analysis of randomized clinical trials. Steroids 2020; 163:108710. [PMID: 32745490 DOI: 10.1016/j.steroids.2020.108710] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 07/13/2020] [Accepted: 07/27/2020] [Indexed: 12/14/2022]
Abstract
Dehydroepiandrosterone (DHEA) supplementation has been anecdotally considered as a tool to improve body composition and health status. We aimed to verify the impact of DHEA supplementation on traditional measurements of body composition and blood pressure (BP) due to their clinical applicability. A meta-analysis of randomized clinical trials was conducted based on the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines. Regarding anthropometric characteristics, DHEA supplementation did not change body weight (weighted mean difference (WMD): -0.16 kg, 95% CI: -1.02 to 0.70, p = 0.72) or body mass index (WMD: -0.18 kg/m2, 95% CI: -0.48 to 0.12, p = 0.24), but increased lean body mass (WMD: 0.45 kg, 95% CI: 0.15 to 0.75, p = 0.004) and decreased fat mass (WMD: -0.85%, 95% CI: -1.18 to -0.51, p = 0.000), when compared to control groups. Neither systolic (WMD: 0.98 mm Hg, 95% CI: -2.31 to 4.29, p = 0.56) nor diastolic BP were significantly changed (WMD: -1.62 mm Hg, 95% CI: -5.49 to 2.24, p = 0.49). Our findings demonstrate that DHEA supplementation increased lean body mass and decreased fat mass, but debate persists when translating the results into clinical benefit. Lastly, DHEA supplementation had a neutral effect on BP.
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Affiliation(s)
- Furong Wang
- College of Life Sciences, Northwest University, Xi'an 710069, China
| | - Yanfei He
- Department of Reproductive Health, Women and Children Health and Family Planning Service Center of Decheng District, Dezhou City, Shandong Province 253000, China
| | - Heitor O Santos
- School of Medicine, Federal University of Uberlandia (UFU), Uberlandia, Minas Gerais, Brazil
| | - Brijesh Sathian
- Deputy Chair for Research, Geriatrics and long term care department, Rumailah Hospital, Hamad Medical Corporation, P. O BOX 3050, Doha, Qatar
| | - James C Price
- Institute of Science and the Environment, University of Worcester, United Kingdom
| | - Jianjun Diao
- Department of Medical Records Management, Central Hospital Affiliated to Shandong First Medical University, Shandong University, No. 105 Jiefang Road, Jinan City, Shandong Province 250013, China.
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Kolatorova Sosvorova L, Sarek J, Vitku J, Kvasnica M. Synthesis of 3α-deuterated 7α-hydroxy-DHEA and 7-oxo-DHEA and application in LC-MS/MS plasma analysis. Steroids 2016; 112:88-94. [PMID: 27192427 DOI: 10.1016/j.steroids.2016.05.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 05/02/2016] [Accepted: 05/10/2016] [Indexed: 11/29/2022]
Abstract
7-Oxygenated metabolites of dehydroepiandrosterone (DHEA) are known for their neuroprotective and immunomodulatory properties. These neuroactive steroids are currently predominately analysed by mass spectrometry, for which the use of internal deuterated standards is necessary. The aim of this study was to synthesize the deuterated derivatives of 7α-hydroxy-DHEA and 7-oxo-DHEA and test them in liquid chromatography-tandem mass spectrometry (LC-MS/MS) in order to enhance the performance characteristics of this method. Here we report the synthesis of 3α deuterium-labelled 7α-hydroxy-DHEA and 7-oxo-DHEA. Deuterium was introduced into the 3α position by reduction of the corresponding 3-ketone with a protected 17-carbonyl group using NaBD4. Our new procedure allows the easier synthesis of deuterated steroid labelled compounds. The use of these deuterated steroids enabled us to improve the human plasma LC-MS/MS analysis of 7α-hydroxy-DHEA and 7-oxo-DHEA in terms of sensitivity, precision and recovery.
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Affiliation(s)
- Lucie Kolatorova Sosvorova
- Institute of Endocrinology, Department of Steroids and Proteofactors, Narodni 8, 116 94 Prague, Czech Republic.
| | - Jan Sarek
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 5, 77900 Olomouc, Czech Republic.
| | - Jana Vitku
- Institute of Endocrinology, Department of Steroids and Proteofactors, Narodni 8, 116 94 Prague, Czech Republic.
| | - Miroslav Kvasnica
- Laboratory of Growth Regulators, Centre of the Region Hana for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacky University, Slechtitelu 27, 78371 Olomouc, Czech Republic.
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Gallagher P, Malik N, Newham J, Young AH, Ferrier IN, Mackin P. WITHDRAWN: Antiglucocorticoid treatments for mood disorders. Cochrane Database Syst Rev 2015; 2015:CD005168. [PMID: 26098594 PMCID: PMC10641662 DOI: 10.1002/14651858.cd005168.pub3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In the original submission two of the authors declared a filing of a pharmaceutical patent. This does not comply with Cochrane's Commercial Sponsorship Policy. The remaining authors are unable to update the review at this time and have therefore withdrawn it from the Cochrane library. The editorial group responsible for this previously published document have withdrawn it from publication.
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Affiliation(s)
- Peter Gallagher
- University of Newcastle upon TyneSchool of Neurology, Neurobiology and PsychiatryQueen Victoria RoadNewcastle upon TyneUKNE1 4LP
| | - Navdeep Malik
- Leazes Wing, The Royal Victoria InfirmaryDepartment of PsychiatryRichardson RoadNewcastle upon TyneUKNE1 4LP
| | - James Newham
- Leazes Wing, The Royal Victoria InfirmaryDepartment of PsychiatryRichardson RoadNewcastle upon TyneUKNE1 4LP
| | - Allan H Young
- Institute of Psychiatry, King's College LondonCentre for Affective DisordersPO72, De Crespigny ParkDenmark HillLondonUKSE5 8AF
| | - I Nicol Ferrier
- University of Newcastle upon TyneDepartment of PsychiatryQueen Victoria RoadNewcastle upon TyneUKNE1 4LP
| | - Paul Mackin
- University of Newcastle upon TyneDepartment of PsychiatryQueen Victoria RoadNewcastle upon TyneUKNE1 4LP
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Desroches S, Lapointe A, Ratté S, Gravel K, Légaré F, Turcotte S. Interventions to enhance adherence to dietary advice for preventing and managing chronic diseases in adults. Cochrane Database Syst Rev 2013:CD008722. [PMID: 23450587 PMCID: PMC4900876 DOI: 10.1002/14651858.cd008722.pub2] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND It has been recognized that poor adherence can be a serious risk to the health and wellbeing of patients, and greater adherence to dietary advice is a critical component in preventing and managing chronic diseases. OBJECTIVES To assess the effects of interventions for enhancing adherence to dietary advice for preventing and managing chronic diseases in adults. SEARCH METHODS We searched the following electronic databases up to 29 September 2010: The Cochrane Library (issue 9 2010), PubMed, EMBASE (Embase.com), CINAHL (Ebsco) and PsycINFO (PsycNET) with no language restrictions. We also reviewed: a) recent years of relevant conferences, symposium and colloquium proceedings and abstracts; b) web-based registries of clinical trials; and c) the bibliographies of included studies. SELECTION CRITERIA We included randomized controlled trials that evaluated interventions enhancing adherence to dietary advice for preventing and managing chronic diseases in adults. Studies were eligible if the primary outcome was the client's adherence to dietary advice. We defined 'client' as an adult participating in a chronic disease prevention or chronic disease management study involving dietary advice. DATA COLLECTION AND ANALYSIS Two review authors independently assessed the eligibility of the studies. They also assessed the risk of bias and extracted data using a modified version of the Cochrane Consumers and Communication Review Group data extraction template. Any discrepancies in judgement were resolved by discussion and consensus, or with a third review author. Because the studies differed widely with respect to interventions, measures of diet adherence, dietary advice, nature of the chronic diseases and duration of interventions and follow-up, we conducted a qualitative analysis. We classified included studies according to the function of the intervention and present results in a narrative table using vote counting for each category of intervention. MAIN RESULTS We included 38 studies involving 9445 participants. Among studies that measured diet adherence outcomes between an intervention group and a control/usual care group, 32 out of 123 diet adherence outcomes favoured the intervention group, 4 favoured the control group whereas 62 had no significant difference between groups (assessment was impossible for 25 diet adherence outcomes since data and/or statistical analyses needed for comparison between groups were not provided). Interventions shown to improve at least one diet adherence outcome are: telephone follow-up, video, contract, feedback, nutritional tools and more complex interventions including multiple interventions. However, these interventions also shown no difference in some diet adherence outcomes compared to a control/usual care group making inconclusive results about the most effective intervention to enhance dietary advice. The majority of studies reporting a diet adherence outcome favouring the intervention group compared to the control/usual care group in the short-term also reported no significant effect at later time points. Studies investigating interventions such as a group session, individual session, reminders, restriction and behaviour change techniques reported no diet adherence outcome showing a statistically significant difference favouring the intervention group. Finally, studies were generally of short duration and low quality, and adherence measures varied widely. AUTHORS' CONCLUSIONS There is a need for further, long-term, good-quality studies using more standardized and validated measures of adherence to identify the interventions that should be used in practice to enhance adherence to dietary advice in the context of a variety of chronic diseases.
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Affiliation(s)
- Sophie Desroches
- Centre de recherche du Centre hospitalier universitaire de Québec (CHUQ), St-François d’Assise Hôpital, Québec, Canada.
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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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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: 165] [Impact Index Per Article: 11.8] [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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Roudebush P, Schoenherr WD, Delaney SJ. An evidence-based review of the use of nutraceuticals and dietary supplementation for the management of obese and overweight pets. J Am Vet Med Assoc 2008; 232:1646-55. [DOI: 10.2460/javma.232.11.1646] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Gallagher P, Malik N, Newham J, Young AH, Ferrier IN, Mackin P. Antiglucocorticoid treatments for mood disorders. Cochrane Database Syst Rev 2008:CD005168. [PMID: 18254070 DOI: 10.1002/14651858.cd005168.pub2] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Antiglucocorticoids may have antidepressant effects and have been reported to be efficacious in the treatment of severe psychiatric disorders. The efficacy and safety of antiglucocorticoid treatments for mood disorders is the subject of this systematic review. OBJECTIVES To compare the efficacy and safety of antiglucocorticoid agents in the treatment of mood episodes (manic, mixed affective or depressive) with placebo or alternative drug treatment in mood disorders. SEARCH STRATEGY CCDANCTR-Studies and CCDANCTR-References were searched on 11-9-2007. Additional searches of electronic databases were conducted in December 2006. Conference proceedings were searched. Experts and pharmaceutical companies were contacted. SELECTION CRITERIA Randomised controlled trials comparing antiglucocorticoid drugs in the treatment of mood episodes with placebo or alternative drug treatment in mood disorders were selected. DATA COLLECTION AND ANALYSIS Data were extracted and the methodological quality of each study was assessed independently by two review authors. Meta-analyses were performed using Review Manager software. Relative risk (RR) with 95% confidence intervals (CI) were calculated for dichotomous outcomes. For continuous data, weighted mean differences (WMD) were calculated. MAIN RESULTS Nine studies met criteria for inclusion. A number of drugs were examined, including mifepristone [RU-486], ketoconazole, metyrapone and DHEA. Three trials were in patients with psychotic major depression (pMDD), five trials in non-psychotic major depression and one trial in bipolar disorder. When examining all trials together across all affective episodes, there was no significant difference in the overall proportion of patients responding to antiglucocorticoid treatment over placebo, although the mean change in HAM-D scores indicated a significant difference in favour of treatment (WMD -4.54, 95%CI -6.78 to -2.29). Of the five trials in non-psychotic depression (unipolar or bipolar), there was a significant difference favouring treatment (HAM-D 50% reduction: RR 0.72, 95%CI 0.56 to 0.91). In pMDD, there was no evidence of an overall antidepressant effect (HAM-D 50% reduction: RR 0.98, 95%CI 0.79 to 1.22) or an effect on overall psychopathology (BPRS 30% reduction: RR 0.96, 95%CI 0.76 to 1.22). In these subtypes, the mean change in HAM-D indicated a significant difference in favour of treatment. AUTHORS' CONCLUSIONS The use of antiglucocorticoids in the treatment of mood disorders is at the proof-of-concept stage. Considerable methodological differences exist between studies with respect to the compounds used and the patient cohorts studied. Results in some diagnostic subtypes are promising and warrant further investigation to establish the clinical utility of these drugs in the treatment of mood disorders.
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Zenk JL, Leikam SA, Kassen LJ, Kuskowski MA. Effect of lean system 7 on metabolic rate and body composition. Nutrition 2005; 21:179-85. [PMID: 15723746 DOI: 10.1016/j.nut.2004.05.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2003] [Revised: 11/03/2003] [Accepted: 05/20/2004] [Indexed: 11/20/2022]
Abstract
OBJECTIVE This study evaluated whether a commercial weight-loss product (Lean System 7) would result in less reduction in resting metabolic rate (RMR) in overweight subjects on a calorie-restricted diet and exercise regimen than in subjects using diet and exercise alone. METHODS In this randomized, double-blind, placebo-controlled study, healthy overweight adults were given three capsules of a commercial weight-loss product twice daily or an identical placebo and followed a calorie-restricted diet and an exercise program for 8 wk. RMR, body weight, body mass index, waist and hip circumferences, and body composition by dual-energy x-ray absorptiometry were measured at baseline and week 8. An intention-to-treat analysis was performed. RESULTS Of 47 adults enrolled, 35 completed the study. Subjects taking the commercial weight-loss product had a significant (P = 0.03) increase in RMR, 7.2% increase versus 0.7% decrease in the placebo group. Subjects taking the commercial weight-loss product also had a significant (P = 0.04) decrease in hip circumference, 3.78 cm versus 2.07 cm in the placebo group. There were no other statistically significant differences in any other outcome variable, diet composition, exercise compliance, or adverse events. CONCLUSION The results of this study showed that administration of a commercial weight-loss product to overweight adults in conjunction with a calorie-restricted diet and moderate exercise program effectively reverses the decrease in RMR associated with calorie restriction within this study population. The commercial weight-loss product was well tolerated, and there were no serious adverse events over the 8 wk studied.
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Affiliation(s)
- John L Zenk
- Minnesota Applied Research Center, Eden Prairie, Minnesota, USA.
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Kreider RB, Almada AL, Antonio J, Broeder C, Earnest C, Greenwood M, Incledon T, Kalman DS, Kleiner SM, Leutholtz B, Lowery LM, Mendel R, Stout JR, Willoughby DS, Ziegenfuss TN. ISSN Exercise & Sport Nutrition Review: Research & Recommendations. J Int Soc Sports Nutr 2004. [PMCID: PMC2129137 DOI: 10.1186/1550-2783-1-1-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Sport nutrition is a constantly evolving field with literally thousands of research papers published annually. For this reason, keeping up to date with the literature is often difficult. This paper presents a well-referenced overview of the current state of the science related to how to optimize training through nutrition. More specifically, this article discusses: 1.) how to evaluate the scientific merit of nutritional supplements; 2.) general nutritional strategies to optimize performance and enhance recovery; and, 3.) our current understanding of the available science behind weight gain, weight loss, and performance enhancement supplements. Our hope is that ISSN members find this review useful in their daily practice and consultation with their clients.
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Zenk JL, Helmer TR, Kassen LJ, Kuskowski MA. The effect of 7-Keto Naturalean™ on weight loss: A randomized, double-blind, placebo-controlled trial. Curr Ther Res Clin Exp 2002. [DOI: 10.1016/s0011-393x(02)80031-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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