1
|
De Silva NL, Papanikolaou N, Grossmann M, Antonio L, Quinton R, Anawalt BD, Jayasena CN. Male hypogonadism: pathogenesis, diagnosis, and management. Lancet Diabetes Endocrinol 2024; 12:761-774. [PMID: 39159641 DOI: 10.1016/s2213-8587(24)00199-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 07/09/2024] [Accepted: 07/09/2024] [Indexed: 08/21/2024]
Abstract
Organic male hypogonadism due to irreversible hypothalamic-pituitary-testicular (HPT) pathology is easily diagnosed and treated with testosterone-replacement therapy. However, controversy surrounds the global practice of prescribing testosterone to symptomatic men with low testosterone and non-gonadal factors reducing health status, such as obesity, type 2 diabetes, and ageing (ie, functional hypogonadism), but without identifiable HPT axis pathology. Health optimisation remains the gold-standard management strategy. Nevertheless, in the last decade large clinical trials and an individual patient data meta-analysis of smaller clinical trials confirmed that testosterone therapy induces modest, yet statistically significant, improvements in sexual function without increasing short-term to medium-term cardiovascular or prostate cancer risks in men with functional hypogonadism. Although testosterone improves bone mineral density and insulin sensitivity in these men, trials from the last decade suggest insufficient evidence to determine the safety and effectiveness of use of this hormone for the prevention of fractures or type 2 diabetes. This Review discusses the pathogenesis and diagnosis of male hypogonadism and appraises the evidence underpinning the management of this condition.
Collapse
Affiliation(s)
- Nipun Lakshitha De Silva
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK; Faculty of Medicine, General Sir John Kotelawala Defence University, Colombo, Sri Lanka
| | - Nikoleta Papanikolaou
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Mathis Grossmann
- Department of Medicine (Austin Health), The University of Melbourne, Melbourne, VIC, Australia; Department of Endocrinology, Austin Health, Heidelberg, VIC, Australia
| | - Leen Antonio
- Department of Chronic Diseases and Metabolism (CHROMETA), Laboratory of Clinical and Experimental Endocrinology, KU Leuven, Leuven, Belgium; Department of Endocrinology, University Hospitals Leuven, Leuven, Belgium
| | - Richard Quinton
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK; Northern Regional Gender Dysphoria Service, Cumbria Northumberland Tyne & Wear NHS Foundation Trust, Newcastle-upon-Tyne, UK
| | - Bradley David Anawalt
- Department of Medicine, University of Washington School of Medicine, Seattle, WA, USA
| | - Channa N Jayasena
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK.
| |
Collapse
|
2
|
de Silva NL, Grant B, Minhas S, Jayasena CN. Cardiovascular disease and testosterone therapy in male hypogonadism. Ann N Y Acad Sci 2024. [PMID: 39243393 DOI: 10.1111/nyas.15211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2024]
Abstract
This review assesses the evidence of the physiological effects of testosterone on cardiovascular health, the association between male hypogonadism and cardiovascular health, and the effects of testosterone therapy on cardiovascular health in male hypogonadism. Preclinical studies suggest complex effects of testosterone on cardiovascular risk by acting on skeletal muscle, cardiomyocytes, vasculature, adipocytes, insulin action, and erythropoiesis. Furthermore, low testosterone has a bi-directional association with cardiometabolic risk. Observational studies have reported worse metabolic profiles in men with organic hypogonadism. However, a consistent association between major cardiovascular events and male hypogonadism has not been established. Hematocrit increases with testosterone therapy; however, most studies do not report an increase in venous thromboembolism risk. Although some observational studies and a small randomized controlled study reported an increased risk of cardiovascular disease, recent data confirm the medium-term cardiovascular safety of testosterone therapy in middle-aged and older men with low testosterone.
Collapse
Affiliation(s)
- Nipun Lakshitha de Silva
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
- Faculty of Medicine, General Sir John Kotelawala Defence University, Colombo, Sri Lanka
| | - Bonnie Grant
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Suks Minhas
- Department of Urology, Imperial College Healthcare NHS Trust, London, UK
| | - Channa N Jayasena
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| |
Collapse
|
3
|
Cruickshank M, Hudson J, Hernández R, Aceves-Martins M, Quinton R, Gillies K, Aucott LS, Kennedy C, Manson P, Oliver N, Wu F, Bhattacharya S, Dhillo WS, Jayasena CN, Brazzelli M. The effects and safety of testosterone replacement therapy for men with hypogonadism: the TestES evidence synthesis and economic evaluation. Health Technol Assess 2024; 28:1-210. [PMID: 39248210 PMCID: PMC11404359 DOI: 10.3310/jryt3981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/10/2024] Open
Abstract
Background Low levels of testosterone cause male hypogonadism, which is associated with sexual dysfunction, tiredness and reduced muscle strength and quality of life. Testosterone replacement therapy is commonly used for ameliorating symptoms of male hypogonadism, but there is uncertainty about the magnitude of its effects and its cardiovascular and cerebrovascular safety. Aims of the research The primary aim was to evaluate the safety of testosterone replacement therapy. We also assessed the clinical and cost-effectiveness of testosterone replacement therapy for men with male hypogonadism, and the existing qualitative evidence on men's experience and acceptability of testosterone replacement therapy. Design Evidence synthesis and individual participant data meta-analysis of effectiveness and safety, qualitative evidence synthesis and model-based cost-utility analysis. Data sources Major electronic databases were searched from 1992 to February 2021 and were restricted to English-language publications. Methods We conducted a systematic review with meta-analysis of individual participant data according to current methodological standards. Evidence was considered from placebo-controlled randomised controlled trials assessing the effects of any formulation of testosterone replacement therapy in men with male hypogonadism. Primary outcomes were mortality and cardiovascular and cerebrovascular events. Data were extracted by one reviewer and cross-checked by a second reviewer. The risk of bias was assessed using the Cochrane Risk of Bias tool. We performed one-stage meta-analyses using the acquired individual participant data and two-stage meta-analyses to integrate the individual participant data with data extracted from eligible studies that did not provide individual participant data. A decision-analytic Markov model was developed to evaluate the cost per quality-adjusted life-years of the use of testosterone replacement therapy in cohorts of patients of different starting ages. Results We identified 35 trials (5601 randomised participants). Of these, 17 trials (3431 participants) provided individual participant data. There were too few deaths to assess mortality. There was no difference between the testosterone replacement therapy group (120/1601, 7.5%) and placebo group (110/1519, 7.2%) in the incidence of cardiovascular and/or cerebrovascular events (13 studies, odds ratio 1.07, 95% confidence interval 0.81 to 1.42; p = 0.62). Testosterone replacement therapy improved quality of life and sexual function in almost all patient subgroups. In the testosterone replacement therapy group, serum testosterone was higher while serum cholesterol, triglycerides, haemoglobin and haematocrit were all lower. We identified several themes from five qualitative studies showing how symptoms of low testosterone affect men's lives and their experience of treatment. The cost-effectiveness of testosterone replacement therapy was dependent on whether uncertain effects on all-cause mortality were included in the model, and on the approach used to estimate the health state utility increment associated with testosterone replacement therapy, which might have been driven by improvements in symptoms such as sexual dysfunction and low mood. Limitations A meaningful evaluation of mortality was hampered by the limited number of defined events. Definition and reporting of cardiovascular and cerebrovascular events and methods for testosterone measurement varied across trials. Conclusions Our findings do not support a relationship between testosterone replacement therapy and cardiovascular/cerebrovascular events in the short-to-medium term. Testosterone replacement therapy improves sexual function and quality of life without adverse effects on blood pressure, serum lipids or glycaemic markers. Future work Rigorous long-term evidence assessing the safety of testosterone replacement therapy and subgroups most benefiting from treatment is needed. Study registration The study is registered as PROSPERO CRD42018111005. Funding This award was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (NIHR award ref: 17/68/01) and is published in full in Health Technology Assessment; Vol. 28, No. 43. See the NIHR Funding and Awards website for further award information.
Collapse
Affiliation(s)
| | - Jemma Hudson
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | - Rodolfo Hernández
- Health Economics Research Unit, University of Aberdeen, Aberdeen, UK
| | | | - Richard Quinton
- Department of Endocrinology, Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK
| | - Katie Gillies
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | - Lorna S Aucott
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | - Charlotte Kennedy
- Health Economics Research Unit, University of Aberdeen, Aberdeen, UK
| | - Paul Manson
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| | | | - Frederick Wu
- Division of Diabetes, Endocrinology and Gastroenterology, University of Manchester, Manchester, UK
| | - Siladitya Bhattacharya
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
| | | | | | - Miriam Brazzelli
- Health Services Research Unit, University of Aberdeen, Aberdeen, UK
| |
Collapse
|
4
|
Hernández R, de Silva NL, Hudson J, Cruickshank M, Quinton R, Manson P, Dhillo WS, Bhattacharya S, Brazzelli M, Jayasena CN. Cost-effectiveness of testosterone treatment utilising individual patient data from randomised controlled trials in men with low testosterone levels. Andrology 2024; 12:477-486. [PMID: 38233215 DOI: 10.1111/andr.13597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/05/2023] [Accepted: 12/28/2023] [Indexed: 01/19/2024]
Abstract
BACKGROUND Testosterone is safe and highly effective in men with organic hypogonadism, but worldwide testosterone prescribing has recently shifted towards middle-aged and older men, mostly with low testosterone related to age, diabetes and obesity, for whom there is less established evidence of clinical safety and benefit. The value of testosterone treatment in middle-aged and older men with low testosterone is yet to be determined. We therefore evaluated the cost-effectiveness of testosterone treatment in such men with low testosterone compared with no treatment. METHODS A cost-utility analysis comparing testosterone with no treatment was conducted following best practices in decision modelling. A cohort Markov model incorporating relevant care pathways for individuals with hypogonadism was developed for a 10-year-time horizon. Clinical outcomes were obtained from an individual patient meta-analysis of placebo-controlled, double-blind randomised studies. Three starting age categories were defined: 40, 60 and 75 years. Cost utility (quality-adjusted life years) accrued and costs of testosterone treatment, monitoring and cardiovascular complications were compared to estimate incremental cost-effectiveness ratios and cost-effectiveness acceptability curves for selected scenarios. RESULTS Ten-year excess treatment costs for testosterone compared with non-treatment ranged between £2306 and £3269 per patient. Quality-adjusted life years results depended on the instruments used to measure health utilities. Using Beck depression index-derived quality-adjusted life years data, testosterone was cost-effective (incremental cost-effectiveness ratio <£20,000) for men aged <75 years, regardless of morbidity and mortality sensitivity analyses. Testosterone was not cost-effective in men aged >75 years in models assuming increased morbidity and/or mortality. CONCLUSIONS AND FUTURE RESEARCH Our data suggest that testosterone is cost-effective in men <75 years when Beck depression index-derived quality-adjusted life years data are considered; cost-effectiveness in men >75 years is dependent on cardiovascular safety. However, more robust and longer-term cost-utility data are needed to verify our conclusion.
Collapse
Affiliation(s)
- Rodolfo Hernández
- Health Economics Research Unit, University of Aberdeen, Foresterhill, Aberdeen, UK
| | - Nipun Lakshitha de Silva
- Faculty of Medicine, General Sir John Kotelawala Defence University, Colombo, Sri Lanka
- Department of Metabolism, Digestion and Reproduction, Imperial College, London, UK
| | - Jemma Hudson
- Health Service Research Unit, University of Aberdeen, Aberdeen, UK
| | | | - Richard Quinton
- Department of Metabolism, Digestion and Reproduction, Imperial College, London, UK
- Translational & Clinical Research Institute, University of Newcastle upon Tyne, Newcastle Upon Tyne, UK
- Department of Endocrinology, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Paul Manson
- Health Service Research Unit, University of Aberdeen, Aberdeen, UK
| | - Waljit S Dhillo
- Department of Metabolism, Digestion and Reproduction, Imperial College, London, UK
| | - Siladitya Bhattacharya
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Foresterhill, Aberdeen, UK
| | - Miriam Brazzelli
- Health Service Research Unit, University of Aberdeen, Aberdeen, UK
| | - Channa N Jayasena
- Department of Metabolism, Digestion and Reproduction, Imperial College, London, UK
| |
Collapse
|
5
|
Peppa Μ, Manta A. Sexual Dysfunction in Diabetic Patients: Τhe Role of Advanced Glycation End Products. Curr Diabetes Rev 2024; 20:e070423215531. [PMID: 37026501 DOI: 10.2174/1573399819666230407095522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/30/2023] [Accepted: 02/17/2023] [Indexed: 04/08/2023]
Abstract
Sexual dysfunction is a common but underestimated disorder of diabetic patients of both genders, entailing specific and complex pathogenesis and severely affecting reproductive health and quality of life. Hyperglycemia, dyslipidemia, hypertension, obesity, aging, and psychological factors underlie its pathogenesis. A large body of evidence indicates that advanced glycation end products and oxidative stress have a distinct impact on the pathogenesis of diabetes and its complications, including hypogonadism, which is closely related to sexual dysfunction. Advanced glycation end products seem to affect sexual function either directly by accumulation in various regions of the reproductive system and/or correlation or indirectly through oxidative stress induction via several mechanisms. They are also involved in the pathogenesis of diabetic complications, which are related to sexual dysfunction. Herein, we review the issue of sexual dysfunction in diabetic males and females, with special emphasis on the impact of advanced glycation end products in the pathogenesis of sexual dysfunction, the relationship of advanced glycation end products with low testosterone levels in diabetic subjects, which account for the proportion of disorder and the available therapeutic interventions.
Collapse
Affiliation(s)
- Μelpomeni Peppa
- Endocrine and Metabolic Disorders Unit, Second Propaedeutic Department of Internal Medicine, Research Institute and Diabetes Center, Attikon University Hospital, Athens, Greece
| | - Aspasia Manta
- Endocrine and Metabolic Disorders Unit, Second Propaedeutic Department of Internal Medicine, Research Institute and Diabetes Center, Attikon University Hospital, Athens, Greece
| |
Collapse
|
6
|
Aceves‐Martins M, Quinton R, Brazzelli M, Cruickshank M, Manson P, Hudson J, Oliver N, Hernandez R, Aucott L, Wu F, Dhillo WS, Bhattacharya S, Gillies K, Jayasena CN. Identifying the outcomes important to men with hypogonadism: A qualitative evidence synthesis. Andrology 2022; 10:625-641. [PMID: 35064779 PMCID: PMC9487983 DOI: 10.1111/andr.13156] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 01/11/2022] [Accepted: 01/15/2022] [Indexed: 12/04/2022]
Abstract
OBJECTIVE Men with male hypogonadism (MH) experience sexual dysfunction, which improves with testosterone replacement therapy (TRT). However, randomised controlled trials provide little consensus on functional and behavioural symptoms in hypogonadal men; these are often better captured by qualitative information from individual patient experience. METHODS We systematically searched major electronic databases to identify qualitative data from men with hypogonadism, with or without TRT. Two independent authors performed the selection, extraction, and thematic analysis of data. Quality of eligible studies was assessed using the Critical Appraisals Skills Programme and Grading of Recommendations Assessment, Development and Evaluation-Confidence in the Evidence from Reviews of Qualitative research tools. RESULTS We analysed data from five studies published in nine reports that assessed a total of 284 participants. Published data were only available within North America, with no ethnic minority or other underserved groups included. In addition to sexual dysfunction, men with MH experienced adverse changes in physical strength, perceptions of masculinity, cognitive function, and quality of life. The experience of MH appeared dependent on the source(s) of educational material. DISCUSSION We propose a patient-centred approach to clinician interactions rather than focusing on discreet MH symptoms. Current evidence about the experience of MH is limited to North America and predominantly white ethnicity, which may not be broadly applicable to other geographic regions. Broadening our understanding of the MH experience may improve the targeting of information to patients. In addition, a multidisciplinary approach may better address symptoms neither attributable to MH nor alleviated by TRT.
Collapse
Affiliation(s)
| | - Richard Quinton
- Translational & Clinical Research InstituteUniversity of Newcastle‐upon‐TyneNewcastle upon TyneUK
- Department of EndocrinologyDiabetes & MetabolismNewcastle‐upon‐Tyne Hospitals NHS Foundation TrustNewcastle upon TyneUK
| | | | | | - Paul Manson
- Health Services Research UnitUniversity of AberdeenAberdeenUK
| | - Jemma Hudson
- Health Services Research UnitUniversity of AberdeenAberdeenUK
| | - Nick Oliver
- Department of MetabolismDigestion and ReproductionFaculty of MedicineImperial College LondonLondonUK
| | | | - Lorna Aucott
- Health Services Research UnitUniversity of AberdeenAberdeenUK
| | - Frederick Wu
- Division of DiabetesEndocrinology & GastroenterologyManchester Institute for Collaborative Research on Ageing School of Social SciencesUniversity of ManchesterManchesterUK
| | - Waljit S. Dhillo
- Department of MetabolismDigestion and ReproductionFaculty of MedicineImperial College LondonLondonUK
| | | | - Katie Gillies
- Health Services Research UnitUniversity of AberdeenAberdeenUK
| | - Channa N. Jayasena
- Department of EndocrinologyDiabetes & MetabolismNewcastle‐upon‐Tyne Hospitals NHS Foundation TrustNewcastle upon TyneUK
| | | |
Collapse
|
7
|
Sharma A, Ul-Haq Z, Sindi E, Al-Sharefi A, Kamalati T, Dhillo WS, Minhas S, Jayasena CN. Clinical characteristics and comorbidities associated with testosterone prescribing in men. Clin Endocrinol (Oxf) 2022; 96:227-235. [PMID: 34816471 DOI: 10.1111/cen.14643] [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: 06/02/2021] [Revised: 10/12/2021] [Accepted: 10/31/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Testosterone replacement therapy (TRT) is recommended for the treatment of symptomatic hypogonadism in men. Data on prescription behaviours are, however, limited and conflicting. The objective of this study was to investigate clinical characteristics associated with the likelihood of being prescribed TRT by general practitioners (GP) in North-West London (NWL). DESIGN Retrospective cohort study using Discover database of GP-registered patients in NWL between 2015 and 2019. PATIENTS We identified 20,299 men aged ≥18 years with serum total testosterone measurement (TT) and without prior TRT prescription records. MEASUREMENTS We determined whether TRT was subsequently commenced, while analysing clinical characteristics related to hypogonadism. RESULTS Of all men having TT measurement, 19,583 (96.4%) were not commenced on TRT (Group A) and 716 (3.5%) men were commenced on TRT (Group B). Men prescribed TRT (Group B) had higher mean age, body mass index (BMI) and higher risks of hypertension, depression type 2 diabetes and ischaemic heart disease; conversely, men in Group B had lower mean pretreatment TT and were less likely to have prostate cancer. Four-hundred and thirty-six men (24.3%) with TT < 8 nmol/L and symptoms of low libido were not prescribed TRT. CONCLUSIONS Our study highlights several factors which may influence the decisions made by clinicians when initiating TRT in primary care. Clearer guidance for clinicians may help to improve the consistency of treatment of men with hypogonadism.
Collapse
Affiliation(s)
- Aditi Sharma
- Section of Investigative Medicine, Imperial College London, London, UK
| | - Zia Ul-Haq
- Imperial College Health Partners, London, UK
| | - Emad Sindi
- Section of Investigative Medicine, Imperial College London, London, UK
| | - Ahmed Al-Sharefi
- Section of Investigative Medicine, Imperial College London, London, UK
| | | | - Waljit S Dhillo
- Section of Investigative Medicine, Imperial College London, London, UK
| | - Suks Minhas
- Department of Urology, Charing Cross Hospital, Imperial Healthcare NHS Trust, London, UK
| | - Channa N Jayasena
- Section of Investigative Medicine, Imperial College London, London, UK
| |
Collapse
|
8
|
Jayasena CN, Quinton R. Male hypogonadism and general practitioners in the UK. How to increase case recognition, without compromising diagnostic accuracy? Clin Endocrinol (Oxf) 2021; 95:412-413. [PMID: 33655569 DOI: 10.1111/cen.14432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Channa N Jayasena
- Section of Investigative Medicine, Hammersmith Hospital, Imperial College London, London, UK
| | - Richard Quinton
- Translational & Clinical Research Institute, University of Newcastle-upon-Tyne, Newcastle Upon Tyne, UK
- Department of Endocrinology, Diabetes & Metabolism, Newcastle-upon-Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
| |
Collapse
|
9
|
Abstract
Androgens are potent drugs requiring prescription for valid medical indications but are misused for invalid, unproven, or off-label reasons as well as being abused without prescription for illicit nonmedical application for performance or image enhancement. Following discovery and first clinical application of testosterone in the 1930s, commercialization of testosterone and synthetic androgens proliferated in the decades after World War II. It remains among the oldest marketed drugs in therapeutic use, yet after 8 decades of clinical use, the sole unequivocal indication for testosterone remains in replacement therapy for pathological hypogonadism, organic disorders of the male reproductive system. Nevertheless, wider claims assert unproven, unsafe, or implausible benefits for testosterone, mostly representing wishful thinking about rejuvenation. Over recent decades, this created an epidemic of testosterone misuse involving prescription as a revitalizing tonic for anti-aging, sexual dysfunction and/or obesity, where efficacy and safety remains unproven and doubtful. Androgen abuse originated during the Cold War as an epidemic of androgen doping among elite athletes for performance enhancement before the 1980s when it crossed over into the general community to become an endemic variant of drug abuse in sufficiently affluent communities that support an illicit drug industry geared to bodybuilding and aiming to create a hypermasculine body physique and image. This review focuses on the misuse of testosterone, defined as prescribing without valid clinical indications, and abuse of testosterone or synthetic androgens (androgen abuse), defined as the illicit use of androgens without prescription or valid indications, typically by athletes, bodybuilders and others for image-oriented, cosmetic, or occupational reasons.
Collapse
Affiliation(s)
- David J Handelsman
- ANZAC Research Institute, University of Sydney, Sydney, Australia.,Andrology Department, Concord Hospital, Sydney, Australia
| |
Collapse
|
10
|
Jaschke NP, Rachner TD, Hofbauer LC. [Testosterone deficiency in the ageing male]. Dtsch Med Wochenschr 2021; 146:141-145. [PMID: 33513645 DOI: 10.1055/a-1240-9784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Over the past years, a growing demand for testosterone replacement therapy in aging men has been noted in the US as well as in Europe. The current evidence for detrimental consequences of low testosterone in old men is largely based on retrospective studies. On the other hand, prospective placebo-controlled randomized trials investigating clinically relevant endpoints are limited. Clinical benefits of testosterone replacement therapy in ageing men include improved sexual function and libido, increase in muscle mass and -function, as well as bone mass accrual. Whether testosterone supplementation in ageing men confers an altered risk for cardiovascular disease and/or prostate cancer remains unclear. Ongoing clinical trials (e. g. TRAVERSE trial, NCT03 518 034) will help to resolve these questions.
Collapse
Affiliation(s)
- Nikolai Pirmin Jaschke
- Bereich Endokrinologie, Diabetes und Knochenstoffwechselerkrankungen und Zentrum für gesundes Altern, Medizinische Klinik und Poliklinik III, Universitätsklinikum Carl Gustav Carus der Technischen Universität Dresden
| | - Tilman D Rachner
- Bereich Endokrinologie, Diabetes und Knochenstoffwechselerkrankungen und Zentrum für gesundes Altern, Medizinische Klinik und Poliklinik III, Universitätsklinikum Carl Gustav Carus der Technischen Universität Dresden
| | - Lorenz C Hofbauer
- Bereich Endokrinologie, Diabetes und Knochenstoffwechselerkrankungen und Zentrum für gesundes Altern, Medizinische Klinik und Poliklinik III, Universitätsklinikum Carl Gustav Carus der Technischen Universität Dresden
| |
Collapse
|
11
|
Al-Sharefi A, Quinton R. Current National and International Guidelines for the Management of Male Hypogonadism: Helping Clinicians to Navigate Variation in Diagnostic Criteria and Treatment Recommendations. Endocrinol Metab (Seoul) 2020; 35:526-540. [PMID: 32981295 PMCID: PMC7520594 DOI: 10.3803/enm.2020.760] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/23/2020] [Accepted: 07/27/2020] [Indexed: 12/19/2022] Open
Abstract
Male hypogonadism-rebadged by some as testosterone deficiency syndrome-is a clinical and biochemical diagnosis of increasing worldwide interest. Organic male hypogonadism-usually permanent-is well-established, but aging men may also exhibit lower serum testosterone levels; principally due to burden of extra-gonadal comorbidities such as obesity, diabetes and metabolic syndrome, but with an underlying intact hypothalamo-pituitary-testicular (HPT) axis capable of springing back into operation once comorbidities are addressed. Despite encouraging observational data and plausible theoretical underpinning, evidence for efficacy and safety of testosterone in this "aging" group of men is lacking; addressing comorbid illnesses remains the key priority instead. Nevertheless, in recent years, accumulation of misleading information online has triggered a global tsunami of testosterone prescriptions. Despite this, many men with organic hypogonadism remain undiagnosed or untreated; many more face a diagnostic odyssey before achieving care by the appropriate specialist. As testosterone therapy is not without risk several clinical practice guidelines have been published specialist societies to guide physicians on best practice. However, these are heterogeneous in key areas, reflecting divergent approaches to the same evidence basis. Herein, we navigate the major clinical practice guidelines on male hypogonadism and test their respective recommendations against current best evidence.
Collapse
Affiliation(s)
- Ahmed Al-Sharefi
- Department of Endocrinology, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle-upon-Tyne, UK
| | - Richard Quinton
- Department of Endocrinology, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle-upon-Tyne, UK
- Translational & Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, UK
| |
Collapse
|
12
|
Morton A, Williams M, Perera M, Ranasinghe S, Teloken PE, Williams M, Chung E, Roberts MJ. A National Analysis of Temporal Changes in Prescribing of Testosterone Replacement Therapy Considering Methods of Delivery and Government Regulation. World J Mens Health 2020; 39:83-89. [PMID: 32777869 PMCID: PMC7752513 DOI: 10.5534/wjmh.190166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/25/2020] [Accepted: 03/23/2020] [Indexed: 12/02/2022] Open
Abstract
Purpose Testosterone replacement therapy (TRT) is commonly used for various causes of androgen deficiency and subsidized by the Pharmaceutical Benefits Scheme (PBS) in Australia when appropriate. In response to a sharp increase in the prescribing of subsidized TRT, the Australian government instituted new, stricter prescription criteria in April 2015. We aim to demonstrate longitudinal changes in the prescription patterns of subsidized TRT over time. Materials and Methods The publicly available PBS database was accessed for TRT prescription data between 1992–2018. Population estimate data was collected from the Australian Bureau of Statistics for population-adjustment. Data analysis was performed according to class and specific formulation of TRT. Total and population-adjusted trends were considered, as was indexation to 2015 when restrictions were implemented. Results Longitudinal trends in subsidized TRT prescription demonstrated a progressive overall increase since 2000, according to total prescriptions and population-adjusted estimates, with greater use of topical formulations (gel, patch, cream/spray) and injections. Since 2015, a 37% decline in total population-adjusted prescriptions was observed (1,399–883 per 100,000 persons). Since 2015, relatively increased use of injections (50%) and 1% gel (30%) comprise the majority of contemporary TRT. Annual financial burden due to TRT was $AU16,768 per 100,000 persons prior to 2000 (mean cost 1992–2000), increasing to $AU112,539 in 2018 (due to use of injections). The rate of change in costs slowed after the restrictions were introduced in 2015. Conclusions The restrictions in subsidized TRT eligibility enforced by the PBS have reduced overall TRT prescriptions and slowed the cumulative financial burden.
Collapse
Affiliation(s)
- Andrew Morton
- Faculty of Medicine, The University of Queensland, Brisbane, Australia.,Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | - Michael Williams
- Faculty of Medicine, The University of Queensland, Brisbane, Australia.,Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | - Marlon Perera
- Faculty of Medicine, The University of Queensland, Brisbane, Australia.,Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Australia.,Department of Surgery, Austin Health, The University of Melbourne, Melbourne, Australia
| | - Sachinka Ranasinghe
- Faculty of Medicine, The University of Queensland, Brisbane, Australia.,Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | - Patrick E Teloken
- Faculty of Medicine, The University of Queensland, Brisbane, Australia.,Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | | | - Eric Chung
- Faculty of Medicine, The University of Queensland, Brisbane, Australia.,Department of Urology, Princess Alexandra Hospital, Brisbane, Australia.,Andro Urology Centre, Brisbane, Australia
| | - Matthew J Roberts
- Department of Urology, Royal Brisbane and Women's Hospital, Brisbane, Australia.,Nepean Urology Research Group, Nepean Hospital, Kingswood, Australia.,Centre for Clinical Research and Faculty of Medicine, The University of Queensland, Herston, Australia.
| |
Collapse
|
13
|
How to manage low testosterone level in men: a guide for primary care. Br J Gen Pract 2020; 70:364-365. [PMID: 32586827 DOI: 10.3399/bjgp20x710729] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 11/14/2019] [Indexed: 10/31/2022] Open
|
14
|
Loo SY, Azoulay L, Nie R, Dell'Aniello S, Yu OHY, Renoux C. Cardiovascular and Cerebrovascular Safety of Testosterone Replacement Therapy Among Aging Men with Low Testosterone Levels: A Cohort Study. Am J Med 2019; 132:1069-1077.e4. [PMID: 30953635 DOI: 10.1016/j.amjmed.2019.03.022] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 03/01/2019] [Accepted: 03/01/2019] [Indexed: 01/10/2023]
Abstract
PURPOSE We assessed the risk of ischemic stroke, transient ischemic attack, and myocardial infarction associated with testosterone replacement therapy (TRT) among aging men with low testosterone levels. METHODS Using the UK Clinical Practice Research Datalink, we formed a cohort of men aged 45 years or older with low testosterone levels and no evidence of hypogonadotropic or testicular disease, between 1995 and 2017. Hazard ratios (HRs) and 95% confidence intervals (CIs) of a composite of ischemic stroke/transient ischemic attack and myocardial infarction were estimated using time-dependent Cox proportional hazards models, comparing current use of TRT with nonuse. RESULTS The cohort included 15,401 men. During 71,541 person-years of follow-up, 850 patients experienced an ischemic stroke/transient ischemic attack/myocardial infarction (crude incidence rate 1.19 [95% confidence interval (CI), 1.11-1.27] per 100 persons per year). Compared with nonuse, current use of TRT was associated with an increased risk of the composite outcome (HR 1.21; 95% CI, 1.00-1.46). This risk was highest in the first 6 months to 2 years of continuous TRT use (HR 1.35; 95% CI, 1.01-1.79), as well as among men aged 45-59 years (HR 1.44; 95% CI, 1.07-1.92). CONCLUSIONS TRT may increase the risk of cardiovascular events in aging men with low testosterone levels, particularly in the first 2 years of use. In the absence of identifiable causes of hypogonadism, TRT should be initiated with caution among aging men with low testosterone levels.
Collapse
Affiliation(s)
- Simone Y Loo
- Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Québec, Canada
| | - Laurent Azoulay
- Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Québec, Canada; Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Québec, Canada; Gerald Bronfman Department of Oncology, McGill University, Montreal, Québec, Canada
| | - Rui Nie
- Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Québec, Canada
| | - Sophie Dell'Aniello
- Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Québec, Canada
| | - Oriana Hoi Yun Yu
- Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Québec, Canada; Division of Endocrinology, Jewish General Hospital, Montreal, Québec, Canada
| | - Christel Renoux
- Centre for Clinical Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Québec, Canada; Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Québec, Canada; Department of Neurology and Neurosurgery, McGill University, Montreal, Québec, Canada.
| |
Collapse
|
15
|
Santella C, Renoux C, Yin H, Yu OHY, Azoulay L. Testosterone Replacement Therapy and the Risk of Prostate Cancer in Men With Late-Onset Hypogonadism. Am J Epidemiol 2019; 188:1666-1673. [PMID: 31145457 DOI: 10.1093/aje/kwz138] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/24/2019] [Accepted: 05/24/2019] [Indexed: 12/20/2022] Open
Abstract
The association between the use of testosterone replacement therapy (TRT) and prostate cancer remains uncertain. Thus, we investigated whether TRT is associated with an increased risk of prostate cancer in men with late-onset hypogonadism. We used the UK Clinical Practice Research Datalink to assemble a cohort of 12,779 men who were newly diagnosed with hypogonadism between January 1, 1995, and August 31, 2016, with follow-up until August 31, 2017. Exposure to TRT was treated as a time-varying variable and lagged by 1 year to account for cancer latency, with nonuse as the reference category. During 58,224 person-years of follow-up, a total of 215 patients were newly diagnosed with prostate cancer, generating an incidence rate of 3.7 per 1,000 person-years. In time-dependent Cox proportional hazards models, use of TRT was not associated with an overall increased risk of prostate cancer (hazard ratio = 0.97; 95% confidence interval: 0.71, 1.32) compared with nonuse. Results remained consistent in secondary and sensitivity analyses, as well as in a propensity score-matched cohort analysis that further assessed the impact of residual confounding. Overall, the use of TRT was not associated with an increased risk of prostate cancer in men with late-onset hypogonadism.
Collapse
Affiliation(s)
- Christina Santella
- Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital, Montreal, Quebec, Canada
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada
| | - Christel Renoux
- Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital, Montreal, Quebec, Canada
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
| | - Hui Yin
- Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital, Montreal, Quebec, Canada
| | - Oriana H Y Yu
- Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital, Montreal, Quebec, Canada
- Division of Endocrinology, Jewish General Hospital, Montreal, Quebec, Canada
| | - Laurent Azoulay
- Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital, Montreal, Quebec, Canada
- Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada
- Gerald Bronfman Department of Oncology, McGill University, Montreal, Quebec, Canada
| |
Collapse
|
16
|
Kwong JC, Krakowsky Y, Grober E. Testosterone Deficiency: A Review and Comparison of Current Guidelines. J Sex Med 2019; 16:812-820. [DOI: 10.1016/j.jsxm.2019.03.262] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/16/2019] [Accepted: 03/18/2019] [Indexed: 11/24/2022]
|
17
|
Tharakan T, Miah S, Jayasena C, Minhas S. Investigating the basis of sexual dysfunction during late-onset hypogonadism. F1000Res 2019; 8. [PMID: 30984376 PMCID: PMC6436191 DOI: 10.12688/f1000research.16561.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/15/2019] [Indexed: 12/29/2022] Open
Abstract
Late-onset hypogonadism (LOH) is the term used to describe the decline in serum testosterone levels associated with increasing age in men above 40 years. A number of symptoms are attributed to LOH, but the most common association is that of sexual dysfunction. LOH has recently come under greater scrutiny with the widespread use of testosterone therapy, and concerns regarding the efficacy and safety of testosterone replacement therapy have been raised. In particular, the cardiovascular safety and the beneficial effects of testosterone replacement therapy on general health have been questioned. This review will give an overview of the current evidence for the relationship of LOH and male sexual dysfunction.
Collapse
Affiliation(s)
- Tharu Tharakan
- Department of Urology, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK.,Section of Investigative Medicine, Department of Medicine, Imperial College London, London, UK
| | - Saiful Miah
- Department of Urology, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Channa Jayasena
- Section of Investigative Medicine, Department of Medicine, Imperial College London, London, UK
| | - Suks Minhas
- Department of Urology, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| |
Collapse
|
18
|
Swee DS, Gan EH. Late-Onset Hypogonadism as Primary Testicular Failure. Front Endocrinol (Lausanne) 2019; 10:372. [PMID: 31244778 PMCID: PMC6581721 DOI: 10.3389/fendo.2019.00372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 05/24/2019] [Indexed: 12/21/2022] Open
Affiliation(s)
- Du Soon Swee
- Endocrine Unit, Royal Victoria Infirmary, Newcastle upon Tyne, United Kingdom
- Department of Endocrinology, Singapore General Hospital, Singapore, Singapore
| | - Earn H. Gan
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Newcastle upon Tyne, United Kingdom
- South Tyneside and Sunderland NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
- *Correspondence: Earn H. Gan
| |
Collapse
|
19
|
Houghton DE, Alsawas M, Barrioneuvo P, Tello M, Farah W, Beuschel B, Prokop LJ, Layton JB, Murad MH, Moll S. Testosterone therapy and venous thromboembolism: A systematic review and meta-analysis. Thromb Res 2018; 172:94-103. [PMID: 30396049 PMCID: PMC10601700 DOI: 10.1016/j.thromres.2018.10.023] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 10/17/2018] [Accepted: 10/24/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUND Testosterone prescribing for men has dramatically increased, and there have been concerns about inappropriate use and adverse events. While regulatory bodies have warned about increased risk of venous thromboembolism (VTE), published clinical data supporting an increased risk for VTE are limited. OBJECTIVE To conduct a systematic review of studies examining the association between testosterone therapy in men and VTE. METHODS Comprehensive searches of multiple databases were performed from inception through October 3rd, 2018. Randomized control trials (RCTs) and observational studies examining the association between exogenous testosterone (any route) and VTE. Study selection and data extraction were performed by two independent investigators. Random-effect model meta-analyses were used to estimate pooled odds ratios (OR) and 95% confidence intervals (CIs). Heterogeneity among studies was evaluated using the I2 statistic. Risk of bias was assessed using the Cochrane and Newcastle-Ottawa tools. RESULTS Six RCTs (n = 2236) and 5 observational studies (n = 1,249,640) were included. Five RCTs were performed in men with documented hypogonadism. The observational studies included: 2 case-control studies, 2 retrospective cohorts, and 1 retrospective cohort with a nested case-control study. There was no evidence of a statistically significant association between VTE and testosterone (OR 1.41, 95%CI 0.96-2.07). Heterogeneity was high (I-squared = 84.4%). The association remained nonsignificant when the analysis was stratified by study design: RCTs (2.05, 95% CI 0.78-5.39); cohort (1.06, 95% CI 0.85-1.33); and case-control (1.34, 95% CI 0.78-2.28). The overall risk of bias was moderate. CONCLUSIONS The current evidence is of low certainty but does not support an association between testosterone use and VTE in men.
Collapse
Affiliation(s)
- Damon E Houghton
- Mayo Clinic, Department of Cardiovascular Diseases, Division of Vascular Medicine & Department of Internal Medicine, Division of Hematology/Oncology, 200 1st St SW, Rochester, MN 55905, USA.
| | - Mouaz Alsawas
- Mayo Clinic, Evidence-based Practice Center, Mayo Clinic Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, 200 1st St SW, Rochester, MN 55901, USA
| | - Patricia Barrioneuvo
- Mayo Clinic, Evidence-based Practice Center, Mayo Clinic Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, 200 1st St SW, Rochester, MN 55901, USA
| | - Mouaffaa Tello
- Mayo Clinic, Evidence-based Practice Center, Mayo Clinic Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, 200 1st St SW, Rochester, MN 55901, USA
| | - Wigdan Farah
- Mayo Clinic, Evidence-based Practice Center, Mayo Clinic Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, 200 1st St SW, Rochester, MN 55901, USA
| | - Brad Beuschel
- Mayo Clinic, Evidence-based Practice Center, Mayo Clinic Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, 200 1st St SW, Rochester, MN 55901, USA
| | - Larry J Prokop
- Mayo Clinic Libraries, 200 1st St SW, Rochester, MN 55901, USA
| | - J Bradley Layton
- RTI Health Solutions, Research Triangle Park, NC 27709-2194, USA
| | - M Hassan Murad
- Mayo Clinic, Evidence-based Practice Center, Mayo Clinic Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, 200 1st St SW, Rochester, MN 55901, USA
| | - Stephan Moll
- University of North Carolina School of Medicine, Department of Medicine, Division of Hematology/Oncology, Chapel Hill, NC, USA
| |
Collapse
|
20
|
Testosterone Therapy: Do American and European Clinicians Have Different Approaches? J Sex Med 2018; 15:1373-1377. [DOI: 10.1016/j.jsxm.2018.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 07/01/2018] [Accepted: 07/17/2018] [Indexed: 11/23/2022]
|
21
|
Takov K, Wu J, Denvir MA, Smith LB, Hadoke PWF. The role of androgen receptors in atherosclerosis. Mol Cell Endocrinol 2018; 465:82-91. [PMID: 29024781 DOI: 10.1016/j.mce.2017.10.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 10/02/2017] [Accepted: 10/07/2017] [Indexed: 12/19/2022]
Abstract
Male disadvantage in cardiovascular health is well recognised. However, the influence of androgens on atherosclerosis, one of the major causes of many life-threatening cardiovascular events, is not well understood. With the dramatic increase in clinical prescription of testosterone in the past decade, concerns about the cardiovascular side-effects of androgen supplementation or androgen deprivation therapy are increasing. Potential atheroprotective effects of testosterone could be secondary to (aromatase-mediated) conversion into oestradiol or, alternatively, to direct activation of androgen receptors (AR). Recent development of animal models with cell-specific AR knockout has indicated a complex role for androgen action in atherosclerosis. Most studies suggest androgens are atheroprotective but the precise role of AR remains unclear. Increased use of AR knockout models should clarify the role of AR in atherogenesis and, thus, lead to exploitation of this pathway as a therapeutic target.
Collapse
Affiliation(s)
- Kaloyan Takov
- University/ BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Junxi Wu
- MRC Centre for Reproductive Health, University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK; University/ BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Martin A Denvir
- University/ BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Lee B Smith
- MRC Centre for Reproductive Health, University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK; School of Environmental and Life Sciences, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Patrick W F Hadoke
- University/ BHF Centre for Cardiovascular Science, University of Edinburgh, The Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK.
| |
Collapse
|
22
|
Khandwala YS, Raheem OA, Ali MA, Hsieh TC. Variation in Practice Pattern of Male Hypogonadism: A Comparative Analysis of Primary Care, Urology, Endocrinology, and HIV Specialists. Am J Mens Health 2018; 12:472-478. [PMID: 29183245 PMCID: PMC5818126 DOI: 10.1177/1557988317743152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 08/31/2017] [Accepted: 09/06/2017] [Indexed: 11/29/2022] Open
Abstract
The objective of the current study was to measure the adherence of guideline-based evaluation and treatment of hypogonadism by medical specialty. A retrospective review was performed analyzing patients from a single academic institution within the past 10 years. The cohort of 193 men was grouped according to medical specialty of the diagnosing physician (50 urology, 49 primary care, 44 endocrinology, and 50 HIV medicine). Adherence to guidelines was assessed using the Endocrine Society's criteria. Primary care patients were older compared to the rest of the cohort ( p < .001) but BMI and cardiovascular risk factors were similar ( p = .900). Patients treated by urologists and endocrinologists had the highest percentage of low testosterone findings at initial encounter at 72% ( p < .001). Sixty-two percent of urology patients had low LH or FSH compared to 63.6% for endocrinology and 16% for primary care ( p < .001). As for brain MRI findings, no urology patients had positive findings (0/9) while eight pituitary adenomas (40%) were found by endocrinologists. Forty-five percent of men treated by urologists received TRT without repeat confirmation, compared to 58% of endocrinologists, 77% of primary care, and 88% of HIV medicine ( p < .001). All urology patients had PSA checked before TRT compared to 77.5% of primary care and 61.2% of endocrinology patients ( p = .063). Adherence to the guidelines helps prevent undue over-diagnosis and over-treatment of hypogonadism. This study suggests that adherence to guideline-based screening is varied among specialties.
Collapse
Affiliation(s)
- Yash S. Khandwala
- Department of Urology, University of California San Diego, La Jolla, CA, USA
- University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Omer A. Raheem
- Department of Urology, University of California San Diego, La Jolla, CA, USA
| | - Mir Amaan Ali
- University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Tung-Chin Hsieh
- Department of Urology, University of California San Diego, La Jolla, CA, USA
| |
Collapse
|
23
|
Curtis HJ, Goldacre B. OpenPrescribing: normalised data and software tool to research trends in English NHS primary care prescribing 1998-2016. BMJ Open 2018; 8:e019921. [PMID: 29476029 PMCID: PMC5855401 DOI: 10.1136/bmjopen-2017-019921] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 12/11/2017] [Accepted: 12/12/2017] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVES We aimed to compile and normalise England's national prescribing data for 1998-2016 to facilitate research on long-term time trends and create an open-data exploration tool for wider use. DESIGN We compiled data from each individual year's national statistical publications and normalised them by mapping each drug to its current classification within the national formulary where possible. We created a freely accessible, interactive web tool to allow anyone to interact with the processed data. SETTING AND PARTICIPANTS We downloaded all available annual prescription cost analysis datasets, which include cost and quantity for all prescription items dispensed in the community in England. Medical devices and appliances were excluded. PRIMARY AND SECONDARY OUTCOME MEASURES We measured the extent of normalisation of data and aimed to produce a functioning accessible analysis tool. RESULTS All data were imported successfully. 87.5% of drugs were matched exactly on name to the current formulary and a further 6.5% to similar drug names. All drugs in core clinical chapters were reconciled to their current location in the data schema, with only 1.26% of drugs not assigned a current chemical code. We created an openly accessible interactive tool to facilitate wider use of these data. CONCLUSIONS Publicly available data can be made accessible through interactive online tools to help researchers and policy-makers explore time trends in prescribing.
Collapse
Affiliation(s)
- Helen J Curtis
- Evidence Based Medicine DataLab, Centre for Evidence Based Medicine, Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Ben Goldacre
- Evidence Based Medicine DataLab, Centre for Evidence Based Medicine, Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| |
Collapse
|
24
|
British Society for Sexual Medicine Guidelines on Adult Testosterone Deficiency, With Statements for UK Practice. J Sex Med 2017; 14:1504-1523. [DOI: 10.1016/j.jsxm.2017.10.067] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 10/14/2017] [Accepted: 10/19/2017] [Indexed: 01/01/2023]
|
25
|
Handelsman DJ. Pharmacoepidemiology of testosterone: Curbing off-label prescribing. Pharmacoepidemiol Drug Saf 2017; 26:1248-1255. [DOI: 10.1002/pds.4284] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 07/12/2017] [Accepted: 07/12/2017] [Indexed: 11/10/2022]
Affiliation(s)
- David J. Handelsman
- ANZAC Research Institute; University of Sydney; Sydney New South Wales Australia
| |
Collapse
|
26
|
Translational Perspective on the Role of Testosterone in Sexual Function and Dysfunction. J Sex Med 2017; 13:1183-98. [PMID: 27436075 DOI: 10.1016/j.jsxm.2016.06.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 05/13/2016] [Accepted: 06/09/2016] [Indexed: 12/31/2022]
Abstract
INTRODUCTION The biological importance of testosterone is generally accepted by the medical community; however, controversy focuses on its relevance to sexual function and the sexual response, and our understanding of the extent of its role in this area is evolving. AIM To provide scientific evidence examining the role of testosterone at the cellular and molecular levels as it pertains to normal erectile physiology and the development of erectile dysfunction and to assist in guiding successful therapeutic interventions for androgen-dependent sexual dysfunction. METHODS In this White Paper, the Basic Science Committee of the Sexual Medicine Society of North America assessed the current basic science literature examining the role of testosterone in sexual function and dysfunction. RESULTS Testosterone plays an important role in sexual function through multiple processes: physiologic (stimulates activity of nitric oxide synthase), developmental (establishes and maintains the structural and functional integrity of the penis), neural (development, maintenance, function, and plasticity of the cavernous nerve and pelvic ganglia), therapeutically for dysfunctional regulation (beneficial effect on aging, diabetes, and prostatectomy), and phosphodiesterase type 5 inhibition (testosterone supplement to counteract phosphodiesterase type 5 inhibitor resistance). CONCLUSION Despite controversies concerning testosterone with regard to sexual function, basic science studies provide incontrovertible evidence for a significant role of testosterone in sexual function and suggest that properly administered testosterone therapy is potentially advantageous for treating male sexual dysfunction.
Collapse
|
27
|
Abstract
PURPOSE OF REVIEW There has been an increase in the prescribing of testosterone therapy in the past decade. There is concern that at least part of this increase is driven by advertising rather than sound medical practice. The purpose of this review is to summarize the recent trends in testosterone prescribing, and to examine whether testosterone is being appropriately prescribed as per guidelines. RECENT FINDINGS Both global and U.S. data reflect an overall increase in the use of testosterone in the last decade, although there are early signs of a decline in testosterone sales since 2014. This increased prescribing has been accompanied with an overall increase in testing for testosterone levels, prescription of testosterone without the appropriate diagnostic evaluation recommended by clinical practice guidelines, and apparent use of this therapy for unproven medical conditions. SUMMARY Research to date suggests that there is room to improve our prescribing of testosterone. Greater understanding of the potential provider-level and system-level factors that contribute to the current prescribing practices may help accomplish such improvement.
Collapse
Affiliation(s)
- Guneet K Jasuja
- aCenter for Healthcare Organization and Implementation Research (CHOIR), ENRM VAMC, Bedford. bDepartment of Health Law, Policy and Management, Boston University School of Public Health, Boston cResearch Program in Men's Health, Aging and Metabolism, Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women's Hospital, Harvard Medical School, Boston dRAND Corporation, Boston, MA eDepartment of Medicine, Section of General Internal Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | | | | |
Collapse
|
28
|
Anaissie J, DeLay KJ, Wang W, Hatzichristodoulou G, Hellstrom WJ. Testosterone deficiency in adults and corresponding treatment patterns across the globe. Transl Androl Urol 2017; 6:183-191. [PMID: 28540225 PMCID: PMC5422691 DOI: 10.21037/tau.2016.11.16] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
The global prevalence of testosterone deficiency (TD) ranges from 10–40%. The actual diagnosis of TD is controversial, as a wide range of total testosterone (TT) thresholds are used for diagnosis (200–400 ng/dL), and physicians differ in their emphasis placed on clinical symptoms. There are also significant global differences in the prescription patterns of testosterone replacement therapy (TRT). In the United States, prescription of TRT is significantly higher than the rest of the world, increasing 3-fold over the last 10 years and more so in eugonadal men. The majority of treating physicians emphasizes clinical symptomology of TD over laboratory values, and up to one-fourth of their patients do not even have serum testosterone levels. There are significant inter-physician differences in willingness to prescribe TRT in the setting of prostate cancer. Data is scarce on testosterone prescribing patterns in Africa, Asia, and the Middle East. More literature is needed to better characterize how physicians from different regions diagnose TD.
Collapse
Affiliation(s)
- James Anaissie
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Kent J DeLay
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA
| | - William Wang
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA
| | | | - Wayne J Hellstrom
- Department of Urology, Tulane University School of Medicine, New Orleans, LA, USA
| |
Collapse
|
29
|
Piotrowska K, Wang C, Swerdloff RS, Liu PY. Male hormonal contraception: hope and promise. Lancet Diabetes Endocrinol 2017; 5:214-223. [PMID: 26915313 PMCID: PMC4993687 DOI: 10.1016/s2213-8587(16)00034-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 01/05/2016] [Accepted: 01/12/2016] [Indexed: 02/01/2023]
Abstract
Family planning is a shared responsibility, but available male-directed contraceptive methods are either not easily reversible (vasectomy) or not sufficiently effective (condom). However, roughly 20% of couples using a contraceptive method worldwide, and up to 80% in some countries, still choose a male-directed method. Male hormonal contraception is highly effective, with perfect use failure rates of 0·6% (95% CI 0·3-1·1) if sperm concentrations of less than 1 million per mL are maintained. After cessation of male hormonal contraception, sperm output fully recovers in a predictable manner, resulting in pregnancies and livebirths. Spontaneous miscarriage and fetal malformation rates after recovery of sperm output overlap those in the general population. Short-term adverse events-acne, night sweats, increased weight, and altered mood and libido-are recognised, but are generally mild. Further optimisation of specific androgen-progestin regimens and phase 3 studies of lead combinations are still needed to successfully develop an approved male hormonal contraceptive and to identify long-term side-effects.
Collapse
Affiliation(s)
- Katarzyna Piotrowska
- Division of Endocrinology, Department of Medicine, Harbor-UCLA Medical Center and Los Angeles Biomedical Research Institute (LA BioMed) Torrance, CA, USA
| | - Christina Wang
- Division of Endocrinology, Department of Medicine, Harbor-UCLA Medical Center and Los Angeles Biomedical Research Institute (LA BioMed) Torrance, CA, USA
| | - Ronald S Swerdloff
- Division of Endocrinology, Department of Medicine, Harbor-UCLA Medical Center and Los Angeles Biomedical Research Institute (LA BioMed) Torrance, CA, USA
| | - Peter Y Liu
- Division of Endocrinology, Department of Medicine, Harbor-UCLA Medical Center and Los Angeles Biomedical Research Institute (LA BioMed) Torrance, CA, USA.
| |
Collapse
|
30
|
Soto-Pedre E, Newey PJ, Bevan JS, Greig N, Leese GP. The epidemiology of hyperprolactinaemia over 20 years in the Tayside region of Scotland: the Prolactin Epidemiology, Audit and Research Study (PROLEARS). Clin Endocrinol (Oxf) 2017; 86:60-67. [PMID: 27434534 DOI: 10.1111/cen.13156] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 06/22/2016] [Accepted: 07/14/2016] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To estimate the prevalence and incidence of hyperprolactinaemia. Hyperprolactinaemia is a common problem in endocrine practice, but its epidemiology has not been accurately established. STUDY DESIGN A population-based retrospective follow-up study in Tayside, Scotland (population 400,000), from 1993 to 2013. PATIENTS Record linkage technology (biochemistry, prescribing, hospital admissions, radiology, mortality and maternity data) was used to identify all patients with a serum prolactin measurement. From these, cases were defined as those with a prolactin greater than 1000 mU/L (47·2 ng/ml) or at least three prescriptions for a dopamine agonist. MEASUREMENTS Number of prevalent and incident cases of hyperprolactinaemia per calendar year by age, sex and cause of hyperprolactinaemia. RESULTS A total of 32289 patients had a serum prolactin assay undertaken, of which 1301 had hyperprolactinaemia not related to pregnancy: 25·6% patients had pituitary disorder, 45·9% were drug-induced, 7·5% had macroprolactin and 6·1% had hypothyroidism, leaving 15·0% idiopathic. Over the 20 years, there was a fourfold increase in the number of prolactin assays performed, and prevalence of hyperprolactinaemia was initially 0·02%, but rose to 0·23% by 2013. Overall incidence was 13·8 cases per 100000 person-years (20·6 in 2008-13) and was 3·5 times higher in women than in men. The highest rates were found in women aged 25-44 years. Drug-induced causes tripled during the 20 years. CONCLUSIONS Rising prevalence of hyperprolactinaemia is probably due to an increased ascertainment and increased incidence of psychoactive drug-related causes. Rates are higher in women than in men but only before the age of 65 years.
Collapse
Affiliation(s)
- Enrique Soto-Pedre
- Division of Molecular & Clinical Medicine, School of Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - Paul J Newey
- Division of Molecular & Clinical Medicine, School of Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
- Department of Endocrinology and Diabetes, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - John S Bevan
- JJR Macleod Centre for Diabetes, Endocrinology & Metabolism (Mac-DEM), Aberdeen Royal Infirmary, University of Aberdeen, Aberdeen, UK
| | - Neil Greig
- Department of Clinical Biochemistry, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - Graham P Leese
- Department of Endocrinology and Diabetes, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| |
Collapse
|
31
|
Snyder G, Shoskes DA. Hypogonadism and testosterone replacement therapy in end-stage renal disease (ESRD) and transplant patients. Transl Androl Urol 2016; 5:885-889. [PMID: 28078220 PMCID: PMC5182240 DOI: 10.21037/tau.2016.08.01] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Hypogonadism is a common problem in the end-stage renal disease (ESRD) and renal transplant population. It has widespread systemic effects and has been linked with mortality in dialysis patients and at the time of renal transplant. The etiology is likely multifactorial and most patients are afflicted by various comorbidities that can contribute to hypogonadism. Clinical manifestations are mostly nonspecific. We review the approach to the diagnosis of hypogonadism, focusing on both laboratory values and clinical signs and symptoms. We review treatment with testosterone replacement in this population and highlight various studies that tend to have small sample sizes. Though these studies provide insight into testosterone replacement, the need for larger studies is emphasized to better understand the effects and safety of therapy.
Collapse
Affiliation(s)
- Grace Snyder
- Departments of Nephrology and Urology, Glickman Urological and Kidney Institute, The Cleveland Clinic, Cleveland, OH 44195, USA
| | - Daniel A Shoskes
- Departments of Nephrology and Urology, Glickman Urological and Kidney Institute, The Cleveland Clinic, Cleveland, OH 44195, USA
| |
Collapse
|
32
|
Abstract
Hypogonadism is a common clinical condition affecting men of different age groups. In addition to its sexual consequences, it has several implications posing significant concerns for a man’s health and well-being. Recent advances in testosterone (T) supplementation have facilitated hypogonadism treatment. Despite that, patients complaining of infertility or seeking conception are still hindered by the unfavorable effects supplemental T has on testicular function. Consequently, alternative approaches that can stimulate endogenous T production are favored. Selective estrogen receptor modulators, gonadotropins and aromatase inhibitors (AIs) can be successful in restoring serum T levels, preserving fertility, and providing symptomatic relief.
Collapse
Affiliation(s)
- Ahmad Majzoub
- Department of Urology, Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Edmund Sabanegh
- Department of Urology, Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| |
Collapse
|
33
|
Trumble BC, Blackwell AD, Stieglitz J, Thompson ME, Suarez IM, Kaplan H, Gurven M. Associations between male testosterone and immune function in a pathogenically stressed forager-horticultural population. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2016; 161:494-505. [PMID: 27465811 PMCID: PMC5075254 DOI: 10.1002/ajpa.23054] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 06/28/2016] [Accepted: 07/06/2016] [Indexed: 01/24/2023]
Abstract
OBJECTIVES Despite well-known fitness advantages to males who produce and maintain high endogenous testosterone levels, such phenotypes may be costly if testosterone-mediated investment in reproductive effort trade-off against investment in somatic maintenance. Previous studies of androgen-mediated trade-offs in human immune function find mixed results, in part because most studies either focus on a few indicators of immunity, are confounded by phenotypic correlation, or are observational. Here the association between male endogenous testosterone and 13 circulating cytokines are examined before and after ex vivo antigen stimulation with phytohemagglutinin (PHA) and lipopolysaccharides (LPS) in a high pathogen population of Bolivian forager-horticulturalists. MATERIALS AND METHODS A Milliplex 13-plex cytokine panel measured cytokine concentration in whole blood samples from 109 Tsimane men aged 40-89 (median = 50 years) before and after antigen stimulation with PHA and LPS. Urinary testosterone was measured via enzyme immunoassay, demographic, and anthropometric data were collected as part of the Tsimane Health and Life History Project. RESULTS Higher endogenous testosterone was associated with down-regulated responses in all cytokines after PHA stimulation (but significantly in only 2/13 cytokines), controlling for age and body mass index. In contrast, testosterone was not significantly associated with down-regulation of cytokines after LPS stimulation. MANOVAs indicate that men with higher testosterone showed reduced cytokine responses to PHA compared with LPS (p = 0.0098). DISCUSSION Endogenous testosterone appears to be immunomodulatory rather than immunosuppressive. Potentially costlier forms of immune activation like those induced by PHA (largely T-cell biased immune activation) are down-regulated in men with higher testosterone, but testosterone has less impact on potentially less costly immune activation following LPS stimulation (largely B-cell mediated immunity).
Collapse
Affiliation(s)
- Benjamin C Trumble
- Department of Anthropology, University of California Santa Barbara, Santa Barbara, CA.
- Tsimane Health and Life History Project, San Borja, Bolivia.
| | - Aaron D Blackwell
- Department of Anthropology, University of California Santa Barbara, Santa Barbara, CA
- Tsimane Health and Life History Project, San Borja, Bolivia
| | - Jonathan Stieglitz
- Tsimane Health and Life History Project, San Borja, Bolivia
- Department of Anthropology, University of New Mexico, Albuquerque, NM
- Institute for Advanced Study in Toulouse, Toulouse, France
| | | | | | - Hillard Kaplan
- Tsimane Health and Life History Project, San Borja, Bolivia
- Department of Anthropology, University of New Mexico, Albuquerque, NM
| | - Michael Gurven
- Department of Anthropology, University of California Santa Barbara, Santa Barbara, CA
- Tsimane Health and Life History Project, San Borja, Bolivia
| |
Collapse
|
34
|
Brock G, Heiselman D, Knorr J, Ni X, Kinchen K. 9-Month Efficacy and Safety Study of Testosterone Solution 2% for Sex Drive and Energy in Hypogonadal Men. J Urol 2016; 196:1509-1515. [DOI: 10.1016/j.juro.2016.04.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2016] [Indexed: 01/23/2023]
Affiliation(s)
- Gerald Brock
- Department of Surgery, University of Western Ontario, London, Ontario, Canada
| | | | - Jack Knorr
- Eli Lilly and Company, Indianapolis, Indiana
| | - Xiao Ni
- Eli Lilly and Company, Indianapolis, Indiana
| | | |
Collapse
|
35
|
Mascarenhas A, Khan S, Sayal R, Knowles S, Gomes T, Moore JE. Factors that may be influencing the rise in prescription testosterone replacement therapy in adult men: a qualitative study. Aging Male 2016; 19:90-5. [PMID: 26927629 DOI: 10.3109/13685538.2016.1150994] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To explore and describe the factors that may be influencing the rise of prescribing and use of testosterone replacement therapy (TRT) in adult men. DESIGN A rapid qualitative research design using semi-structured interviews with providers and patients. SETTING Ontario, Canada. PARTICIPANTS Nine men who have used TRT (referred to as "patients"), and six primary care clinicians and seven specialists (collectively referred to as "providers") who prescribed or administered TRT. METHOD Patients' and providers' perspectives were investigated through semi-structured interviews. A purposive sampling approach was used to recruit all participants. We conducted qualitative analysis using the framework approach for applied health research. MAIN FINDINGS Participants perceived the following factors to have influenced TRT prescriptions and use in adult men: provider factors (diagnostic ambiguity of age-related hypogonadism and beliefs about appropriateness of TRT) and patient factors (access to information on TRT and drug seeking behavior). They perceived that these factors have perpetuated a rise in prescription in the absence of clear clinical guidelines and unclear research evidence on the safety and efficacy of TRT. CONCLUSION The findings of this study highlight that much work still needs to be done to improve diagnostic accuracy and encourage appropriate TRT prescription in adult men. In addition, both patients and providers need more information about the risks and long-term effects of TRT in men.
Collapse
Affiliation(s)
- Alekhya Mascarenhas
- a St. Michael's Hospital, Li Ka Shing Knowledge Institute , Toronto , Ontario , Canada
| | - Sobia Khan
- a St. Michael's Hospital, Li Ka Shing Knowledge Institute , Toronto , Ontario , Canada
| | - Radha Sayal
- a St. Michael's Hospital, Li Ka Shing Knowledge Institute , Toronto , Ontario , Canada
| | - Sandra Knowles
- a St. Michael's Hospital, Li Ka Shing Knowledge Institute , Toronto , Ontario , Canada
| | - Tara Gomes
- a St. Michael's Hospital, Li Ka Shing Knowledge Institute , Toronto , Ontario , Canada
- b The Institute for Clinical Evaluative Sciences , Toronto , Ontario , Canada , and
- c Leslie Dan Faculty of Pharmacy, University of Toronto , Toronto , Ontario , Canada
| | - Julia E Moore
- a St. Michael's Hospital, Li Ka Shing Knowledge Institute , Toronto , Ontario , Canada
| |
Collapse
|
36
|
De Smet MAJ, Lapauw B, De Backer T. Sex steroids in relation to cardiac structure and function in men. Andrologia 2016; 49. [PMID: 27135437 DOI: 10.1111/and.12610] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2016] [Indexed: 12/27/2022] Open
Abstract
The prevalence of testosterone substitution as well as of androgen deprivation therapy in men is increasing. This review aims to summarise available knowledge of the effects of sex steroids on cardiac structure and function in men. MEDLINE was searched through PubMed. Original studies, systematic reviews and meta-analyses, and relevant citations were screened. A short-term hormonal intervention study in healthy young men with respect to echocardiographic parameters of structure and function was performed. Preclinical research provides sufficient evidence for the heart as a substrate for sex hormones. In animals, administration of oestradiol appears to have beneficial effects on cardiac structure and function, whereas administration of testosterone to noncastrated animals adversely affects cardiac function. However, the effects of sex steroids on cardiac function and structure appear more heterogeneous in human observational studies while comparative, prospective studies in humans are lacking. It is concluded that although effects of testosterone substitution as well as of androgen deprivation on cardiac structure and function can be expected based on pre-clinical research, there exists an important knowledge gap of the effects of hormonal intervention in men. As such, there is a need to address this question in future prospective intervention trials.
Collapse
Affiliation(s)
- M A J De Smet
- Department of Internal Medicine, Ghent University, Ghent, Belgium
| | - B Lapauw
- Department of Endocrinology, Ghent University Hospital, Ghent, Belgium
| | - T De Backer
- Department of Cardiology, Ghent University Hospital, Ghent, Belgium
| |
Collapse
|
37
|
|
38
|
Ablation of the androgen receptor from vascular smooth muscle cells demonstrates a role for testosterone in vascular calcification. Sci Rep 2016; 6:24807. [PMID: 27095121 PMCID: PMC4837411 DOI: 10.1038/srep24807] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 04/05/2016] [Indexed: 02/06/2023] Open
Abstract
Vascular calcification powerfully predicts mortality and morbidity from cardiovascular disease. Men have a greater risk of cardiovascular disease, compared to women of a similar age. These gender disparities suggest an influence of sex hormones. Testosterone is the primary and most well-recognised androgen in men. Therefore, we addressed the hypothesis that exogenous androgen treatment induces vascular calcification. Immunohistochemical analysis revealed expression of androgen receptor (AR) in the calcified media of human femoral artery tissue and calcified human valves. Furthermore, in vitro studies revealed increased phosphate (Pi)-induced mouse vascular smooth muscle cell (VSMC) calcification following either testosterone or dihydrotestosterone (DHT) treatment for 9 days. Testosterone and DHT treatment increased tissue non-specific alkaline phosphatase (Alpl) mRNA expression. Testosterone-induced calcification was blunted in VSMC-specific AR-ablated (SM-ARKO) VSMCs compared to WT. Consistent with these data, SM-ARKO VSMCs showed a reduction in Osterix mRNA expression. However, intriguingly, a counter-intuitive increase in Alpl was observed. These novel data demonstrate that androgens play a role in inducing vascular calcification through the AR. Androgen signalling may represent a novel potential therapeutic target for clinical intervention.
Collapse
|
39
|
Ricciuti A, Travison TG, Di Dalmazi G, Talor MV, DeVincentiis L, Manley RW, Bhasin S, Caturegli P, Basaria S. A Subset of Men With Age-Related Decline in Testosterone Have Gonadotroph Autoantibodies. J Clin Endocrinol Metab 2016; 101:1535-41. [PMID: 26963952 PMCID: PMC4880156 DOI: 10.1210/jc.2016-1016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
CONTEXT Age-related decline in serum testosterone (T) is being increasingly diagnosed. In most men, it associates with low or inappropriately normal gonadotropin levels, which suggests a hypothalamic-pituitary etiology. Autoantibodies against adenohypophyseal cells have been associated with pituitary dysfunction; however, the prevalence of pituitary autoimmunity in this age-related T decline has not been assessed. OBJECTIVES This is a proof-of-concept study with the objective of determining the prevalence of antibodies to gonadotrophs in older men with age-related low T and compare it with healthy young and older eugonadal men. STUDY DESIGN This is a cross-sectional case-control study of 182 men. Cases included 100 older men (≥65 years) with age-related low T levels; the control groups were composed of 50 young and 32 older healthy eugonadal men. Serum antibodies against the anterior pituitary gland were measured using a two-step approach: 1) single indirect immunofluorescence (ie, participant serum only) to determine the pattern of cytosolic staining; and 2) double indirect immunofluorescence (ie, participant serum plus a commercial adenohypophyseal hormone antibody) to identify the anterior pituitary cell type recognized by the patient's antibodies). RESULTS In participants with positive antipituitary antibodies, the granular cytosolic pattern (highly predictive of pituitary autoimmunity) was only seen in older men with age-related low T (4%) and none in control groups (0%, P = .001). Double indirect immunofluorescence confirmed that pituitary antibodies were exclusively directed against the gonadotrophs. CONCLUSION A subset of older men with age-related low T levels have specific antibodies against the gonadotrophs. Whether these antibodies are pathogenic and contributory to the age-related decline in T remains to be established.
Collapse
|
40
|
Tadrous M, Martins D, Lee K, Knowles S, Mamdani MM, Juurlink DN, Gomes T. Variations in costs and use of provincially-funded testosterone replacement therapy across Canada: a population-based study. Expert Rev Pharmacoecon Outcomes Res 2016; 16:803-807. [PMID: 26986676 DOI: 10.1586/14737167.2016.1167600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
INTRODUCTION Provincial drug-program policies for the reimbursement of testosterone replacement therapy (TRT) vary across Canada, which may result in marked regional variability in use. METHODS We conducted a population-based cross-sectional analysis of provincially funded TRT spending and utilization in eight provinces across Canada in 2012. We reported the annual cost per user, total cost, and rate of use of TRT overall and by formulation. RESULTS We identified 23,544 provincially-funded recipients of TRT in 2012 in the eight provinces studied. Average annual cost per person varied by 3-fold, ranging from $173 (Prince Edward Island) to $485 (Ontario). Ontario also had the highest rate of use (1,105 users per 100,000 eligible) and the most liberal listing. Provinces with more restricted access (Alberta, British Columbia, and PEI) had lower annual costs per user ($293, $206, $173, respectively). CONCLUSIONS Differing reimbursement policies for TRT products across Canada are likely contributing to variation in the rate of use and cost per recipient.
Collapse
Affiliation(s)
- Mina Tadrous
- a Li Ka Shing Knowledge Institute , St. Michael's Hospital , Toronto , ON , Canada.,b The Institute for Clinical Evaluative Sciences , Toronto , ON , Canada.,c Leslie Dan Faculty of Pharmacy , University of Toronto , Toronto , ON , Canada
| | - Diana Martins
- b The Institute for Clinical Evaluative Sciences , Toronto , ON , Canada
| | - Kathy Lee
- d Canadian Institute for Health Information , Ottawa , ON , Canada
| | - Sandra Knowles
- a Li Ka Shing Knowledge Institute , St. Michael's Hospital , Toronto , ON , Canada.,c Leslie Dan Faculty of Pharmacy , University of Toronto , Toronto , ON , Canada
| | - Muhammad M Mamdani
- a Li Ka Shing Knowledge Institute , St. Michael's Hospital , Toronto , ON , Canada.,c Leslie Dan Faculty of Pharmacy , University of Toronto , Toronto , ON , Canada.,e The Sunnybrook Research Institute , Toronto , ON , Canada.,f Department of Medicine , St. Michael's Hospital , Toronto , ON , Canada.,g Department of Medicine , University of Toronto , Toronto , ON , Canada.,h Departments of Health Policy, Management, and Evaluation , University of Toronto , Toronto , ON , Canada
| | - David N Juurlink
- b The Institute for Clinical Evaluative Sciences , Toronto , ON , Canada.,g Department of Medicine , University of Toronto , Toronto , ON , Canada.,h Departments of Health Policy, Management, and Evaluation , University of Toronto , Toronto , ON , Canada.,i Departments of Pediatrics , University of Toronto , Toronto , ON , Canada
| | - Tara Gomes
- a Li Ka Shing Knowledge Institute , St. Michael's Hospital , Toronto , ON , Canada.,b The Institute for Clinical Evaluative Sciences , Toronto , ON , Canada.,c Leslie Dan Faculty of Pharmacy , University of Toronto , Toronto , ON , Canada.,h Departments of Health Policy, Management, and Evaluation , University of Toronto , Toronto , ON , Canada
| |
Collapse
|
41
|
Gencer B, Mach F. Testosterone: a hormone preventing cardiovascular disease or a therapy increasing cardiovascular events? Eur Heart J 2015; 37:3569-3575. [PMID: 26637832 DOI: 10.1093/eurheartj/ehv439] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 08/02/2015] [Accepted: 08/12/2015] [Indexed: 11/15/2022] Open
Abstract
Decreasing testosterone levels with ageing is a well-known condition in older men named 'low T', 'manopause', or hypogonadism. Observational studies suggested an association between low endogenous testosterone levels and a high cardio-metabolic profile (increased blood pressure, dyslipidaemia, insulin resistance, atherosclerosis, thrombosis), as well as a modest increase in total and cardiovascular (CV) mortality. Controversies persist regarding the need for screening 'low T' in older men, as well as what precisely should be the indication(s) for testosterone replacement therapy. So far, no data have shown that normalization of testosterone levels reduce CV events. Although testosterone replacement therapy seems to have beneficial effects on male quality of life or physical condition, some data suggest serious adverse events, such as CV events. In addition, there is a lack of consensus on the threshold for treatment indication in men with non-specific symptoms or borderline levels of testosterone. Available data from clinical practice setting suggest an increase in testosterone prescription over time and possible overtreatment. In recent years, pharmaceutical companies have promoted 'low T' as a treatable disease, suggesting that testosterone replacement may help restore energy, positive mood and sexuality, and despite ageing. Currently, well-designed, adequately powered randomized controlled trials are needed to assess the impact of testosterone replacement therapy on CV clinically relevant CV outcomes within age-specific ranges to strengthen the evidence for clinical practice guidelines.
Collapse
Affiliation(s)
- Baris Gencer
- Cardiology Division, Department of Specialties in Medicine, Geneva University Hospitals, Rue Gabrielle-Perret Gentil 4, 1211 Geneva 14, Switzerland
| | - François Mach
- Cardiology Division, Department of Specialties in Medicine, Geneva University Hospitals, Rue Gabrielle-Perret Gentil 4, 1211 Geneva 14, Switzerland
| |
Collapse
|
42
|
Bann D, Hardy R, Cooper R, Lashen H, Keevil B, Wu FCW, Holly JMP, Ong KK, Ben-Shlomo Y, Kuh D. Socioeconomic conditions across life related to multiple measures of the endocrine system in older adults: Longitudinal findings from a British birth cohort study. Soc Sci Med 2015; 147:190-9. [PMID: 26588434 PMCID: PMC4686046 DOI: 10.1016/j.socscimed.2015.11.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 10/08/2015] [Accepted: 11/01/2015] [Indexed: 12/29/2022]
Abstract
Background Little is known about how socioeconomic position (SEP) across life impacts on different axes of the endocrine system which are thought to underlie the ageing process and its adverse consequences. We examined how indicators of SEP across life related to multiple markers of the endocrine system in late midlife, and hypothesized that lower SEP across life would be associated with an adverse hormone profile across multiple axes. Methods Data were from a British cohort study of 875 men and 905 women followed since their birth in March 1946 with circulating free testosterone and insulin-like growth factor-I (IGF-I) measured at both 53 and 60–64 years, and evening cortisol at 60–64 years. Indicators of SEP were ascertained prospectively across life—paternal occupational class at 4, highest educational attainment at 26, household occupational class at 53, and household income at 60–64 years. Associations between SEP and hormones were investigated using multiple regression and logistic regression models. Results Lower SEP was associated with lower free testosterone among men, higher free testosterone among women, and lower IGF-I and higher evening cortisol in both sexes. For example, the mean standardised difference in IGF-I comparing the lowest with the highest educational attainment at 26 years (slope index of inequality) was −0.4 in men (95% CI -0.7 to −0.2) and −0.4 in women (−0.6 to −0.2). Associations with each hormone differed by SEP indicator used and sex, and were particularly pronounced when using a composite adverse hormone score. For example, the odds of having 1 additional adverse hormone concentration in the lowest compared with highest education level were 3.7 (95% CI: 2.1, 6.3) among men, and 1.6 (1.0, 2.7) among women (P (sex interaction) = 0.02). We found no evidence that SEP was related to apparent age-related declines in free testosterone or IGF-I. Conclusions Lower SEP was associated with an adverse hormone profile across multiple endocrine axes. SEP differences in endocrine function may partly underlie inequalities in health and function in later life, and may reflect variations in biological rates of ageing. Further studies are required to assess the likely functional relevance of these associations. Socioeconomic position (SEP) across life was related to multiple hormone measures. Lower SEP was related to lower testosterone in men, higher testosterone in women. Lower SEP was related to lower IGF-I and higher evening cortisol in both sexes. SEP differences in multiple hormone axes may underlie later life health inequality.
Collapse
Affiliation(s)
- David Bann
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK; Centre for Longitudinal Studies, UCL Institute of Education, London, UK.
| | - Rebecca Hardy
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Rachel Cooper
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| | - Hany Lashen
- Department of Human Metabolism, The University of Sheffield, Sheffield, UK
| | - Brian Keevil
- Andrology Research Unit, School of Biomedicine, University of Manchester, UK
| | - Frederick C W Wu
- Andrology Research Unit, School of Biomedicine, University of Manchester, UK
| | - Jeff M P Holly
- School of Clinical Science, Bristol University, Bristol, UK
| | - Ken K Ong
- MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - Yoav Ben-Shlomo
- School of Social and Community Medicine, Bristol University, Bristol, UK
| | - Diana Kuh
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| |
Collapse
|
43
|
Dean JD, McMahon CG, Guay AT, Morgentaler A, Althof SE, Becher EF, Bivalacqua TJ, Burnett AL, Buvat J, El Meliegy A, Hellstrom WJ, Jannini EA, Maggi M, McCullough A, Torres LO, Zitzmann M. The International Society for Sexual Medicine's Process of Care for the Assessment and Management of Testosterone Deficiency in Adult Men. J Sex Med 2015; 12:1660-86. [DOI: 10.1111/jsm.12952] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
44
|
Bjerkeli PJ, Mulinari S, Merlo J. Testosterone prescribing in the population-a short social epidemiological analysis in Sweden. Pharmacoepidemiol Drug Saf 2015. [PMID: 26216248 DOI: 10.1002/pds.3836] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
PURPOSE In recent years, there has been an increased interest for use of pharmaceutical testosterone among elderly men. However, it is still scarcely studied if this use is conditioned by socioeconomic factors in the general population of elderly men. METHODS Using individual-level data from a population-based cohort of men aged 65-84 years in the County Scania, Sweden, we analysed testosterone use in 2006 in relation to demographic and socioeconomic factors by means of multiple logistic regression. We also analysed national data at the ecological level to investigate trends in prescribing between 2006 and 2014. RESULTS The prevalence of testosterone use in Sweden among 65- to 84-year-old men increased by 83%, from 3.3 per 1000 men in 2006 to 6.0 in 2014. Testosterone use was more than twice as common in men in the highest income quintile compared with those in the lowest (0.68% versus 0.25%, odds ratio 2.69 and 95% confidence interval 1.80-4.02). Besides in the high-income group, testosterone use was highest in 65- to 69-year-old men, divorced men and, specially, in men with a previous hospital diagnose of hypogonadism. CONCLUSIONS Our findings show socioeconomic inequities in prescription of testosterone. This is a short analysis based on limited data, but because information on this topic is scarce, our analysis adds a relevant piece of evidence and highlights the need for further research.
Collapse
Affiliation(s)
- Pernilla J Bjerkeli
- Unit for Social Epidemiology, Faculty of Medicine, Lund University, Lund, Sweden
| | - Shai Mulinari
- Unit for Social Epidemiology, Faculty of Medicine, Lund University, Lund, Sweden
- Department of Sociology, Faculty of Social Sciences, Lund University, Lund, Sweden
| | - Juan Merlo
- Unit for Social Epidemiology, Faculty of Medicine, Lund University, Lund, Sweden
| |
Collapse
|
45
|
Bann D, Wu FCW, Keevil B, Lashen H, Adams J, Hardy R, Muniz G, Kuh D, Ben‐Shlomo Y, Ong KK. Changes in testosterone related to body composition in late midlife: Findings from the 1946 British birth cohort study. Obesity (Silver Spring) 2015; 23:1486-92. [PMID: 26053924 PMCID: PMC4744737 DOI: 10.1002/oby.21092] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 02/25/2015] [Indexed: 12/02/2022]
Abstract
OBJECTIVE Randomized trials in men with testosterone deficiency have provided evidence of short-term effects of testosterone therapy on muscle and fat mass but it is unclear whether this persists over a longer period or how testosterone affects women. We examined whether the midlife decline in testosterone relates to fat and lean mass in both sexes. METHODS Data were collected from 440 men and 560 women participating in the 1946 British birth cohort study with testosterone measured at 53 and/or 60-64 years. Fat and appendicular lean mass were measured at 60-64 years using dual-energy X-ray absorptiometry. RESULTS Mean free testosterone concentrations were lower at 60-64 than 53 years, by 26% in both sexes. At both ages testosterone was negatively associated with fat mass in men and positively associated in women. A larger decline in free testosterone was associated with higher fat mass in men but with lower fat mass among women. In contrast, declines in testosterone were not associated with lean mass in either sex. CONCLUSIONS Our findings suggest sex-divergent relationships between testosterone and fat mass and their distribution but do not support the hypothesis that midlife declines in testosterone lead to lower lean mass.
Collapse
Affiliation(s)
- David Bann
- MRC Unit for Lifelong Health and Ageing at UCLLondonUK
| | - Frederick C. W. Wu
- Andrology Research Unit, School of BiomedicineUniversity of ManchesterManchesterUK
| | - Brian Keevil
- Andrology Research Unit, School of BiomedicineUniversity of ManchesterManchesterUK
| | - Hany Lashen
- Department of Human MetabolismThe University of SheffieldSheffieldUK
| | - Judith Adams
- Department of RadiologyCentral Manchester University Hospital NHS Foundation Trust, Manchester Academic Health Science CenterManchesterUK
| | - Rebecca Hardy
- MRC Unit for Lifelong Health and Ageing at UCLLondonUK
| | | | - Diana Kuh
- MRC Unit for Lifelong Health and Ageing at UCLLondonUK
| | - Yoav Ben‐Shlomo
- School of Social and Community MedicineBristol UniversityBristolUK
| | - Ken K. Ong
- MRC Epidemiology UnitUniversity of CambridgeCambridgeUK.
| |
Collapse
|
46
|
Abstract
IMPORTANCE Increases in testosterone use and mixed reports of adverse events have raised concerns about the cardiovascular safety of testosterone. Testosterone is available in several delivery mechanisms with varying pharmacokinetics; injections cause spikes in testosterone levels, and transdermal patches and gels cause more subtle but sustained increases. The comparative cardiovascular safety of gels, injections, and patches has not been studied. OBJECTIVE To determine the comparative cardiovascular safety of testosterone injections, patches, and gels. DESIGN, SETTING, AND PARTICIPANTS A retrospective cohort study was conducted using administrative claims from a commercially insured (January 1, 2000, to December 31, 2012) and Medicare (January 1, 2007, to December 31, 2010) population in the United States and general practitioner records from the United Kingdom (January 1, 2000, to June 30, 2012). Participants included men (aged ≥18 years) who initiated use of testosterone patches, gels, or injections following 180 days with no testosterone use. Our analysis was conducted from December 11, 2013, to November 12, 2014. EXPOSURES New initiation of a testosterone dosage form, with use monitored for up to 1 year. MAIN OUTCOMES AND MEASURES Inpatient or outpatient medical records, diagnoses, or claims for cardiovascular and cerebrovascular events including myocardial infarction (MI), unstable angina, stroke, and composite acute event (MI, unstable angina, or stroke); venous thromboembolism (VTE); mortality; and all-cause hospitalization. RESULTS We identified 544,115 testosterone initiators between the 3 data sets: 37.4% injection, 6.9% patch, and 55.8% gel. The majority of men in the Medicare cohort were injection initiators (51.2%), most in the US commercially insured population were gel initiators (56.5%), and the UK database included equal proportions of injections and gel users (approximately 41%). With analysis conducted using hazard ratios and 95% CIs, compared with men using gels, injection initiators had higher hazards of cardiovascular events (ie, MI, unstable angina, and stroke) (1.26; 1.18-1.35), hospitalization (1.16; 1.13-1.19), and death (1.34; 1.15-1.56) but not VTE (0.92; 0.76-1.11). Compared with gels, patches did not confer increased hazards of cardiovascular events (1.10; 0.94-1.29), hospitalization (1.04; 1.00-1.08), death (1.02; 0.77-1.33), or VTE (1.08; 0.79-1.47). CONCLUSIONS AND RELEVANCE Testosterone injections were associated with a greater risk of cardiovascular events, hospitalizations, and deaths compared with gels. Patches and gels had similar risk profiles. However, this study did not assess whether patients met criteria for use of testosterone and did not assess the safety of testosterone among users compared with nonusers of the drug.
Collapse
Affiliation(s)
- J. Bradley Layton
- Department of Epidemiology, The University of North Carolina at Chapel Hill, USA
| | - Christoph R. Meier
- Department of Pharmaceutical Sciences, Basel University, Basel, Switzerland
| | - Julie L. Sharpless
- Department of Medicine, The University of North Carolina at Chapel Hill, USA
| | - Til Stürmer
- Department of Epidemiology, The University of North Carolina at Chapel Hill, USA
| | - Susan S. Jick
- Department of Epidemiology, Boston University School of Public Health, USA
| | - M. Alan Brookhart
- Department of Epidemiology, The University of North Carolina at Chapel Hill, USA
| |
Collapse
|
47
|
|
48
|
Karavolos S, Reynolds M, Panagiotopoulou N, McEleny K, Scally M, Quinton R. Male central hypogonadism secondary to exogenous androgens: a review of the drugs and protocols highlighted by the online community of users for prevention and/or mitigation of adverse effects. Clin Endocrinol (Oxf) 2015; 82:624-32. [PMID: 25333666 DOI: 10.1111/cen.12641] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 09/23/2014] [Accepted: 10/17/2014] [Indexed: 11/28/2022]
Abstract
Androgen- or anabolic steroid-induced hypogonadism (ASIH) is no longer confined to professional athletes; its prevalence amongst young men and teenagers using androgens and/or anabolic steroids (AASs) is rising fast, and those affected can experience significant symptoms. Clinicians are increasingly encountering demanding, well-informed men affected by ASIH, yet lacking authoritative information on the subject may struggle to project a credible message. In this article, we overview the methods and drugs that men use in an attempt to counteract ASIH (with a view to either preventing its onset, or reversing it once it has developed) and summarize the scientific evidence underpinning these. The main channel for obtaining these drugs is the Internet, where they can be readily sourced without a valid prescription. An Internet search using relevant terms revealed a huge number of websites providing advice on how to buy and use products to counteract ASIH. Drugs arising repeatedly in our search included human chorionic gonadotrophin (hCG), selective oestrogen receptor modulators (SERMs) and aromatase inhibitors (AIs). The quality and accuracy of the online information was variable, but review of medical literature also highlighted a lack of scientific data to guide clinical practice. It is important for clinicians to be aware of the AAS user's self-treatment strategies with regard to ASIH side-effect mitigation. By ensuring that they are well-informed, clinicians are more likely to retain the credibility and trust of AAS users, who will in turn likely be more open to engage with appropriate management.
Collapse
Affiliation(s)
- Stamatios Karavolos
- Newcastle Fertility Centre, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | | | | | | | | | | |
Collapse
|
49
|
The Role of Testosterone Therapy in Cardiovascular Mortality: Culprit or Innocent Bystander? Curr Atheroscler Rep 2015; 17:490. [DOI: 10.1007/s11883-015-0490-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
50
|
Morgentaler A, Miner MM, Caliber M, Guay AT, Khera M, Traish AM. Testosterone therapy and cardiovascular risk: advances and controversies. Mayo Clin Proc 2015; 90:224-51. [PMID: 25636998 DOI: 10.1016/j.mayocp.2014.10.011] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 10/15/2014] [Accepted: 10/16/2014] [Indexed: 01/25/2023]
Abstract
Two recent studies raised new concerns regarding cardiovascular (CV) risks with testosterone (T) therapy. This article reviews those studies as well as the extensive literature on T and CV risks. A MEDLINE search was performed for the years 1940 to August 2014 using the following key words: testosterone, androgens, human, male, cardiovascular, stroke, cerebrovascular accident, myocardial infarction, heart attack, death, and mortality. The weight and direction of evidence was evaluated and level of evidence (LOE) assigned. Only 4 articles were identified that suggested increased CV risks with T prescriptions: 2 retrospective analyses with serious methodological limitations, 1 placebo-controlled trial with few major adverse cardiac events, and 1 meta-analysis that included questionable studies and events. In contrast, several dozen studies have reported a beneficial effect of normal T levels on CV risks and mortality. Mortality and incident coronary artery disease are inversely associated with serum T concentrations (LOE IIa), as is severity of coronary artery disease (LOE IIa). Testosterone therapy is associated with reduced obesity, fat mass, and waist circumference (LOE Ib) and also improves glycemic control (LOE IIa). Mortality was reduced with T therapy in 2 retrospective studies. Several RCTs in men with coronary artery disease or heart failure reported improved function in men who received T compared with placebo. The largest meta-analysis to date revealed no increase in CV risks in men who received T and reduced CV risk among those with metabolic disease. In summary, there is no convincing evidence of increased CV risks with T therapy. On the contrary, there appears to be a strong beneficial relationship between normal T and CV health that has not yet been widely appreciated.
Collapse
|