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Sharma JK, Turner ME, Paynter AS, Norman PA, White CA, Ward EC, Adams MA, Holden RM. Serum total testosterone is associated with phosphate and calcium excretion in response to oral phosphate loading in healthy middle-aged males. Andrology 2024. [PMID: 38376008 DOI: 10.1111/andr.13607] [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] [Received: 12/15/2023] [Revised: 01/15/2024] [Accepted: 01/24/2024] [Indexed: 02/21/2024]
Abstract
Androgen receptors are expressed in the kidney and serum testosterone is negatively associated with serum phosphate in males, suggesting a role of testosterone in renal phosphate handling. In this cross-sectional study, we examined the association of serum total and free testosterone with acute phosphate and calcium excretion in males in response to an oral phosphate challenge. Thirty-five healthy adult males with normal baseline testosterone levels consumed a 500 mg phosphorus drink and the urinary excretion of minerals, as well as levels of relevant circulating parameters, were assessed at baseline and hourly for 4 h. Serum total testosterone was positively associated with overall phosphate excretion (r = 0.35, p = 0.04) and calcium excretion (r = 0.44, p = 0.00) in response to the challenge. Serum free testosterone was positively associated with post-challenge calcium excretion (r = 0.34, p = 0.048), but significance was not reached for phosphate excretion (r = 0.31, p = 0.07). Serum total and free testosterone were not associated with parathyroid hormone, fibroblast growth factor-23, or vitamin D-key factors implicated in phosphate and calcium regulation. Overall, higher serum total testosterone levels in healthy middle-aged males are associated with a greater capacity to acutely excrete phosphate and calcium after a single oral phosphate challenge, suggesting potential ramifications of testosterone deficiency related to mineral homeostasis.
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Affiliation(s)
- Jaya K Sharma
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Mandy E Turner
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Amanda S Paynter
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Patrick A Norman
- Kingston General Health Research Institute, Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - Christine A White
- Department of Medicine, Queen's University, Kingston, Ontario, Canada
| | - Emilie C Ward
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Michael A Adams
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Rachel M Holden
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
- Department of Medicine, Queen's University, Kingston, Ontario, Canada
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2
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Zhao H, Li JM, Li ZR, Zhang Q, Zhong MK, Yan MM, Qiu XY. Major adverse cardiovascular events associated with testosterone treatment: a pharmacovigilance study of the FAERS database. Front Pharmacol 2023; 14:1182113. [PMID: 37502210 PMCID: PMC10370495 DOI: 10.3389/fphar.2023.1182113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 06/28/2023] [Indexed: 07/29/2023] Open
Abstract
Background and purpose: Testosterone is an essential sex hormone in maintaining masculine characteristics, which is prescribed for male hypogonadism as testosterone replacement treatment (TRT). Herein, we investigated long-standing controversies about the association between TRT and major adverse cardiovascular events (MACEs), based on real world adverse event (AE) reports, registered in the Food and Drug Administration Adverse Event Reporting System (FAERS). Methods: Publicly available FAERS data from 1 January 2004 to 31 December 2022 were retrieved from the Food and Drug Administration (FDA) website. The data mining protocol including the reporting odds ratio (ROR) and the Bayesian confidence propagation neural network (BCPNN) was applied to analyze overreporting caused by risk factors and MACEs, including TRT, morbidities, and ages. The ROR and the BCPNN were also applied to investigate the annually developing trend of pharmacovigilance (PV) signals in the real world, retrospectively. Results: A total of 3,057 cases referring to MACEs, with a median age of 57 years old (yo), were identified from 28,921 cases of testosterone users. MACEs related to PV signals have emerged since 2014, including cardiac death, non-fatal myocardial infarction, and non-fatal stroke. Myocardial infarction (MI) (ROR: 9.46; IC025: 3.08), acute myocardial infarction (AMI) (ROR: 16.20; IC025: 3.72), ischemic cardiomyopathy (ROR: 11.63; IC025: 2.20), and cardiomyopathy (ROR: 5.98; IC025: 1.96) were the most significant signals generated, and weaker signals included cardiac failure acute (ROR: 4.01; IC025: 0.71), cardiac arrest (ROR: 1.88; IC025: 0.56), and ventricular fibrillation (VF) (ROR: 2.38; IC025: 0.38). The time-to-onset (TTO) of MACEs was calculated with a median of 246 days for AMI. Conclusion: For myocardial infarction and cardiomyopathy, TRT statistically tended to increase the risk of MACEs, while for cardiac arrhythmia, cardiac failure, and stroke, TRT demonstrated beneficial effects among the population with morbidities, such as testosterone deficiency (TD), diabetes mellitus (DM), and hypertension. MACEs were rare but led to serious outcomes including significant increase in death and disability. Since 2018, and before 2014, reports referring to TRT associated with MACEs were relatively scarce, which indicated that there might be a considerable number of cases that went unrecorded, due to neglection. Health workers and testosterone users might pay more attention to testosterone-induced MACEs.
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Affiliation(s)
- Hui Zhao
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Jun-Min Li
- School of Pharmacy, Fudan University, Shanghai, China
| | - Zi-Ran Li
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Qian Zhang
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Ming-Kang Zhong
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Ming-Ming Yan
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiao-Yan Qiu
- Department of Pharmacy, Huashan Hospital, Fudan University, Shanghai, China
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Does Testosterone Salvage PDE5i Non-Responders? A Scoping Review. ENDOCRINES 2023. [DOI: 10.3390/endocrines4010011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
Erectile physiology, in order to function normally, requires the complex coordination of endocrine, neurocognitive, neuromuscular and vascular mechanisms. Testosterone (T) influences male sexuality as well as penile erections at multiple levels, including a direct influence on the nitric oxide synthase (NOS)/cGMP/phosphodiesterase 5 pathway in the penis. However, the precise role of testosterone replacement (TRT) to “salvage” men with mixed ED failing phosphdiesterase-5 inhibitors (PDE5i) remains unclear. We conducted a scoping review identifying the rationale for TRT in ED failing PDE5i, and we critically discuss clinical trials that have examined TRT in the setting of PDE5i use. Overall, TRT replacement appears to be well tolerated and may enhance the response to PDE5i and quality of life, particularly for men with mixed ED, and particularly among men with very low levels of testosterone. However, most of the available literature examines concurrent TRT alone or simultaneous TRT + PDE5i usage, without necessarily selecting for PDE5i failure cases. The present studies are limited to heterogenous studies with small sample sizes, without an exact predominant etiologic factor causing ED. Furthermore, studies showing the most benefit are non-placebo-controlled trials; however, the correction of more profound hypogonadism may lead to an improved response to PDE5i. Stronger conclusions would require properly selected patient populations and larger placebo-controlled RCTs.
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Brown G, Somani BK. Atlas of 35 patient reported outcome measures (PROMs) in andrology: a comprehensive overview of literature. World J Urol 2023; 41:371-404. [PMID: 36534155 DOI: 10.1007/s00345-022-04246-2] [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] [Received: 08/09/2022] [Accepted: 12/05/2022] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION Disorders of male sexual health and functioning are complex and can have significant deleterious effects on patients psychological wellbeing and interpersonal relationships. It is well recognised that clinicians have an overall poor understanding of the true effect that disease has on their patients and self-reported patient-reported outcome measures (PROMs) aim to better communicate these issues. PROMs are generally welcomed by patients and their use in this highly sensitive area of clinical practice is well recognised. An atlas of available PROMs for key conditions in andrology is presented in this article. METHODS A comprehensive search of world literature was conducted from the inception of databases to June 2022, to identify male-specific PROMs relevant to four key andrological disorders: hypogonadism, erectile dysfunction, penile curvature and disorders of ejaculation. Each tool was evaluated in narrative format. RESULTS 35 PROMs were identified. 6 were designed for the assessment of hypogonadism, 18 for erectile dysfunction, one for penile curvature and 10 for ejaculatory disorders. In general, PROMs were brief, self-administered and user-friendly. There was sufficient scope and variety in all categories (apart from penile curvature) to give the clinician flexibility in tool selection and find an appropriate tool for different scenarios. CONCLUSION A number of PROMs exist within andrology that can be utilised in both research and clinical settings. PROMs enable subjective evaluation of difficult-to-assess aspects of the patient experience.
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Affiliation(s)
- G Brown
- Department of Urology, University Hospital Southampton NHS Trust, Southampton, UK
| | - B K Somani
- Department of Urology, University Hospital Southampton NHS Trust, Southampton, UK.
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Dobs AS, Campbell KJ. An Individualized Approach to Managing Testosterone Therapy in the Primary Care Setting. Int J Gen Med 2022; 15:7719-7733. [PMID: 36238539 PMCID: PMC9552794 DOI: 10.2147/ijgm.s364189] [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: 02/26/2022] [Accepted: 06/08/2022] [Indexed: 11/23/2022] Open
Abstract
The incidence of testosterone deficiency and the use of testosterone therapy have increased in recent years, and currently the majority of testosterone prescriptions in the United States and Canada are written by primary care physicians. Meanwhile, the range of available testosterone therapy formulations has widened to include buccal tablets, intramuscular injections, transdermal gels, intranasal gel, subcutaneous injections, oral capsules, and subdermal pellets, each with unique pharmacokinetic and clinical characteristics. Despite the growing use of testosterone therapy and its overall efficacy and safety as demonstrated in clinical trials, concerns exist about the potential impact of testosterone therapy on spermatogenesis and fertility, development of prostate cancer, and risk of polycythemia and cardiovascular events. In addition, ongoing research aims to better characterize the effects of testosterone therapy in specific populations, such as patients aged 65 years and older, patients with obesity and type 2 diabetes, and transgender patients. The range of treatment options and the diversity of patients' goals, preferences, comorbidities, and risk factors necessitate an individualized approach to testosterone therapy that considers each patient's clinical needs alongside the distinct features of different testosterone formulations.
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Affiliation(s)
- Adrian Sandra Dobs
- Division of Endocrinology, Diabetes and Metabolism, The Johns Hopkins University School of Medicine, Baltimore, MD, USA,Correspondence: Adrian Sandra Dobs, The Johns Hopkins University School of Medicine Division of Endocrinology, Diabetes and Metabolism, 1830 Monument Street, Suite 328, Baltimore, MD, 21287, USA, Tel +1-410-955-3663, Fax +1-410-367-2042, Email
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Shrem NS, Wood L, Hamilton RJ, Kuhathaas K, Czaykowski P, Roberts M, Matthew A, Izard JP, Chung P, Nappi L, Jones J, Soulières D, Aprikian A, Power N, Canil C. Testicular cancer survivorship: Long-term toxicity and management. Can Urol Assoc J 2022; 16:257-272. [PMID: 35905486 PMCID: PMC9343164 DOI: 10.5489/cuaj.8009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Affiliation(s)
- Noa Shani Shrem
- Division of Medical Oncology, Department of Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
| | - Lori Wood
- Division of Medical Oncology, Queen Elizabeth II Health Sciences Centre, Dalhousie University, Halifax, NS, Canada
| | - Robert J. Hamilton
- Division of Urology, Department of Surgical Oncology, Princess Margaret Cancer Center, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Kopika Kuhathaas
- Division of Urology, Department of Surgical Oncology, Princess Margaret Cancer Center, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Piotr Czaykowski
- Department of Medical Oncology and Hematology, CancerCare Manitoba, University of Manitoba, Winnipeg, MB, Canada
| | - Matthew Roberts
- Division of Urology, Department of Surgery, University of Ottawa, Ottawa, ON, Canada
| | - Andrew Matthew
- Department of Surgical Oncology, Princess Margaret Cancer Centre, Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Jason P. Izard
- Departments of Urology and Oncology, Queen’s University, Kingston, ON, Canada
| | - Peter Chung
- Department of Radiation Oncology, Radiation Medicine Program, Princess Margaret Hospital, University of Health Network, University of Toronto, Toronto, ON, Canada
| | - Lucia Nappi
- Division of Medical Oncology, British Columbia Cancer - Vancouver Cancer Centre, University of British Columbia, Vancouver, BC, Canada
| | - Jennifer Jones
- Department of Supportive Care, Princess Margaret Cancer Centre, Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Denis Soulières
- Division of Medical Oncology/Hematology, Le Centre Hospitalier de l’Université de Montréal, Montreal, QC, Canada
| | - Armen Aprikian
- Division of Urology, Department of Surgery, McGill University Health Centre, Montreal, QC, Canada
| | - Nicholas Power
- Division of Urology, Department of Surgery, Western University, London, ON, Canada
| | - Christina Canil
- Division of Medical Oncology, Department of Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
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Testosterone therapy and secondary erythrocytosis. Int J Impot Res 2022; 34:693-697. [PMID: 34987178 DOI: 10.1038/s41443-021-00509-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 10/08/2021] [Accepted: 11/22/2021] [Indexed: 12/11/2022]
Abstract
Secondary erythrocytosis is one of the most common adverse events associated with testosterone therapy (TT). Upon encountering this, clinicians will often either adjust TT dosing, stop therapy, order a phlebotomy, or recommend a combination of these. Despite this, the evidence for secondary polycythemia causing harm during TT is scarce, and the hematocrit-based cutoffs present in multiple guidelines appear to be arbritrarily chosen. In this review, we present the pathophysiology behind TT and secondary erythrocytosis, the evidence connecting TT, secondary erythrocytosis and major adverse cardiovascular events (MACE), and the data supporting varying interventions upon diagnosis of secondary erythrocytosis.
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Domes T, Najafabadi BT, Roberts M, Campbell J, Flannigan R, Bach P, Patel P, Langille G, Krakowsky Y, Violette PD, Brock GB, Yafi FA. Canadian Urological Association guideline: Erectile dysfunction. Can Urol Assoc J 2021; 15:310-322. [PMID: 34665713 DOI: 10.5489/cuaj.7572] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Erectile dysfunction (ED) impacts the wellness and quality of life of millions of Canadians. An evaluation focused on the identification of reversible and irreversible underlying factors is recommended for patients presenting with ED. Through a shared decision-making model framework, the goal of ED treatment is to improve functional outcomes and enhance sexual satisfaction while minimizing adverse effects associated with treatment. Given that ED is assessed and treated by multiple different types of health practitioners, the purpose of this guideline is to provide the best available evidence to facilitate care delivery through a Canadian lens. After a narrative review of ED assessment and treatment for general readership, five key clinical questions relating to priority areas of ED are assessed using the GRADE and evidence-to-decision-making frameworks.
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Affiliation(s)
- Trustin Domes
- Division of Urology, Department of Surgery, University of Saskatchewan, Saskatoon, SK, Canada
| | - Borna Tadayon Najafabadi
- Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Matthew Roberts
- Division of Urology, Department of Surgery, University of Ottawa, Ottawa, ON, Canada
| | - Jeffrey Campbell
- Division of Urology, Department of Surgery, Western University, London, ON, Canada
| | - Ryan Flannigan
- Department of Urological Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Phil Bach
- Division of Urology, Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Premal Patel
- Division of Urology, Department of Surgery, University of Manitoba, Winnipeg, MB, Canada
| | | | - Yonah Krakowsky
- Division of Urology, Women's College Hospital & Sinai Health System, Department of Surgery, University of Toronto, Toronto, ON, Canada
| | - Philippe D Violette
- Department of Surgery, McMaster University, Hamilton, ON, Canada.,Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Gerald B Brock
- Professor Emeritus, Western University, London, ON, Canada
| | - Faysal A Yafi
- Department of Urology, University of California Irvine, Irvine, CA, United States
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