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Jones TH, Dobs AS, Randeva H, Moore W, Parkin JM. Leflutrozole in male obesity-associated hypogonadotropic hypogonadism: Ph 2b double-blind randomised controlled trial. Eur J Endocrinol 2023; 189:297-308. [PMID: 37579053 DOI: 10.1093/ejendo/lvad099] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/27/2023] [Accepted: 05/24/2023] [Indexed: 08/16/2023]
Abstract
OBJECTIVE Assessment of the efficacy and safety/tolerability of the aromatase inhibitor leflutrozole to normalise testosterone in Obesity-associated Hypogonadotropic Hypogonadism (OHH). DESIGN Placebo-controlled, double-blind, RCT, in 70 sites in Europe/USA. METHODS Patient inclusion criteria: men with BMI of 30-50 kg/m2, morning total testosterone (TT) < 10.41 nmol/L, and two androgen deficiency symptoms (at least one of sexual dysfunction). Patients randomised to weekly leflutrozole (0.1/0.3/1.0 mg) or placebo for 24 weeks. Primary endpoint: normalisation of TT levels in ≥75% of patients after 24 weeks. Secondary endpoints (included): time to TT normalisation and change in LH/FSH. Safety was assessed through adverse events and laboratory monitoring. RESULTS AND CONCLUSIONS Of 2103 screened, 271 were randomised, 81 discontinued. Demographic characteristics were similar across groups. Mean BMI was 38.1 kg/m2 and TT 7.97 nmol/L. The primary endpoint was achieved in all leflutrozole-treated groups by 24 weeks with a dose-tiered response; mean TT 15.89; 17.78; 20.35 nmol/L, for leflutrozole 0.1 mg, 0.3 mg, and 1.0 mg groups respectively, vs 8.04 nmol/L for placebo. LH/FSH significantly increased in leflutrozole vs placebo groups. No improvements in body composition or sexual dysfunction were observed. Semen volume/total motile sperm count improved with leflutrozole vs placebo. Treatment-emergent adverse events, more common in leflutrozole-treated groups included, raised haematocrit, hypertension, increased PSA, and headache. Some reduction in lumbar bone density was observed with leflutrozole (mean -1.24%, -1.30%, -2.09%) and 0.66% for 0.1 mg, 0.3 mg, 1.0 mg, and placebo, respectively, without change at the hip. This RCT of leflutrozole in OHH demonstrated normalisation of TT in obese men. FSH/LH and semen parameter changes support that leflutrozole may preserve/improve testicular function. CLINICAL TRIAL REGISTRATION NUMBER NCT02730169.
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Affiliation(s)
- T Hugh Jones
- Centre for Diabetes and Endocrinology, Barnsley Hospital NHS Trust, Barnsley, United Kingdom
- Department of Oncology and Metabolism, University of Sheffield Medical School, Sheffield, United Kingdom
| | - Adrian S Dobs
- Division of Endocrinology and Metabolism, The Johns Hopkins School of Medicine, Baltimore, MD, United States
| | - Harpal Randeva
- Clinical Sciences Research Laboratories, Warwick Medical School, University of Warwick, Coventry, United Kingdom
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism (WISDEM) and the Human Metabolism Research Unit (HMRU), Coventry, United Kingdom
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Nattiv A, De Souza MJ, Koltun KJ, Misra M, Kussman A, Williams NI, Barrack MT, Kraus E, Joy E, Fredericson M. The Male Athlete Triad-A Consensus Statement From the Female and Male Athlete Triad Coalition Part 1: Definition and Scientific Basis. Clin J Sport Med 2021; 31:335-348. [PMID: 34091537 DOI: 10.1097/jsm.0000000000000946] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 04/23/2021] [Indexed: 02/02/2023]
Abstract
ABSTRACT The Male Athlete Triad is a syndrome of 3 interrelated conditions most common in adolescent and young adult male endurance and weight-class athletes and includes the clinically relevant outcomes of (1) energy deficiency/low energy availability (EA) with or without disordered eating/eating disorders, (2) functional hypothalamic hypogonadism, and (3) osteoporosis or low bone mineral density with or without bone stress injury (BSI). The causal role of low EA in the modulation of reproductive function and skeletal health in the male athlete reinforces the notion that skeletal health and reproductive outcomes are the primary clinical concerns. At present, the specific intermediate subclinical outcomes are less clearly defined in male athletes than those in female athletes and are represented as subtle alterations in the hypothalamic-pituitary-gonadal axis and increased risk for BSI. The degree of energy deficiency/low EA associated with such alterations remains unclear. However, available data suggest a more severe energy deficiency/low EA state is needed to affect reproductive and skeletal health in the Male Athlete Triad than in the Female Athlete Triad. Additional research is needed to further clarify and quantify this association. The Female and Male Athlete Triad Coalition Consensus Statements include evidence statements developed after a roundtable of experts held in conjunction with the American College of Sports Medicine 64th Annual Meeting in Denver, Colorado, in 2017 and are in 2 parts-Part I: Definition and Scientific Basis and Part 2: The Male Athlete Triad: Diagnosis, Treatment, and Return-to-Play. In this first article, we discuss the scientific evidence to support the Male Athlete Triad model.
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Affiliation(s)
- Aurelia Nattiv
- Division of Sports Medicine and Non-Operative Orthopaedics, Departments of Family Medicine and Orthopaedic Surgery, University of California Los Angeles, Los Angeles, California
| | - Mary Jane De Souza
- Department of Kinesiology, Penn State University, University Park, Pennsylvania
| | - Kristen J Koltun
- Department of Sports Medicine and Nutrition, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Madhusmita Misra
- Division of Pediatric Endocrinology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Andrea Kussman
- Department of Orthopaedic Surgery, Stanford University, Stanford, California
| | - Nancy I Williams
- Department of Kinesiology, Penn State University, University Park, Pennsylvania
| | - Michelle T Barrack
- Department of Family and Consumer Sciences, California State University, Long Beach, Long Beach, California; and
| | - Emily Kraus
- Department of Orthopaedic Surgery, Stanford University, Stanford, California
| | | | - Michael Fredericson
- Department of Orthopaedic Surgery, Stanford University, Stanford, California
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Fredericson M, Kussman A, Misra M, Barrack MT, De Souza MJ, Kraus E, Koltun KJ, Williams NI, Joy E, Nattiv A. The Male Athlete Triad-A Consensus Statement From the Female and Male Athlete Triad Coalition Part II: Diagnosis, Treatment, and Return-To-Play. Clin J Sport Med 2021; 31:349-366. [PMID: 34091538 DOI: 10.1097/jsm.0000000000000948] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Accepted: 04/23/2021] [Indexed: 02/02/2023]
Abstract
ABSTRACT The Male Athlete Triad is a medical syndrome most common in adolescent and young adult male athletes in sports that emphasize a lean physique, especially endurance and weight-class athletes. The 3 interrelated conditions of the Male Athlete Triad occur on spectrums of energy deficiency/low energy availability (EA), suppression of the hypothalamic-pituitary-gonadal axis, and impaired bone health, ranging from optimal health to clinically relevant outcomes of energy deficiency/low EA with or without disordered eating or eating disorder, functional hypogonadotropic hypogonadism, and osteoporosis or low bone mineral density with or without bone stress injury (BSI). Because of the importance of bone mass acquisition and health concerns in adolescence, screening is recommended during this time period in the at-risk male athlete. Diagnosis of the Male Athlete Triad is best accomplished by a multidisciplinary medical team. Clearance and return-to-play guidelines are recommended to optimize prevention and treatment. Evidence-based risk assessment protocols for the male athlete at risk for the Male Athlete Triad have been shown to be predictive for BSI and impaired bone health and should be encouraged. Improving energetic status through optimal fueling is the mainstay of treatment. A Roundtable on the Male Athlete Triad was convened by the Female and Male Athlete Triad Coalition in conjunction with the 64th Annual Meeting of the American College of Sports Medicine in Denver, Colorado, in May of 2017. In this second article, the latest clinical research to support current models of screening, diagnosis, and management for at-risk male athlete is reviewed with evidence-based recommendations.
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Affiliation(s)
- Michael Fredericson
- Division of Physical Medicine & Rehabiilitation, Stanford University, Stanford, California
| | - Andrea Kussman
- Division of Physical Medicine & Rehabiilitation, Stanford University, Stanford, California
| | - Madhusmita Misra
- Division of Pediatric Endocrinology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Michelle T Barrack
- Department of Family and Consumer Sciences, California State University, Long Beach, Long Beach, California
| | - Mary Jane De Souza
- Department of Kinesiology and Physiology Penn State University, University Park, Pennsylvania
| | - Emily Kraus
- Division of Physical Medicine & Rehabiilitation, Stanford University, Stanford, California
| | | | - Nancy I Williams
- Department of Kinesiology and Physiology Penn State University, University Park, Pennsylvania
| | | | - Aurelia Nattiv
- Department of Family Medicine, University of California, Los Angeles, Los Angeles, California
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Improvement of testosterone deficiency by fermented Momordica charantia extracts in aging male rats. Food Sci Biotechnol 2021; 30:443-454. [PMID: 33868755 DOI: 10.1007/s10068-020-00872-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 12/08/2020] [Accepted: 12/29/2020] [Indexed: 10/22/2022] Open
Abstract
This study evaluated the efficacy of Momordica charantia (MC; bitter melon) extracts against andropause symptoms. We fermented MC with Lactobacillus plantarum and verified the ability of the fermented MC extracts (FMEs) to control testosterone deficiency by using aging male rats as an animal model of andropause. FME administration considerably increased total and free testosterone levels, muscle mass, forced swimming time, and total and motile sperm counts in aging male rats. In contrast, sex hormone-binding globulin, retroperitoneal fat, serum cholesterol, and triglyceride levels were significantly reduced in the treated groups compared to the non-treated control aging male rats. Furthermore, we observed that FME enhanced the expression of testosterone biosynthesis-related genes but reduced the expression of testosterone degradation-related genes in a mouse Leydig cell line. These results suggest that FME has effective pharmacological activities that increase and restore free testosterone levels and that FME may be employed as a promising natural product for alleviating testosterone deficiency syndrome. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-020-00872-x.
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Zhong SR, Yang HH, Liao CH, Yang DH, Tu SK, Hung CL, Liao CC. Association Between Low Serum Testosterone and the Development of Metabolic Syndrome in Elderly Taiwanese Men. Diabetes Metab Syndr Obes 2021; 14:99-106. [PMID: 33469327 PMCID: PMC7810670 DOI: 10.2147/dmso.s282832] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 12/02/2020] [Indexed: 12/19/2022] Open
Abstract
PURPOSE To assess the association between serum testosterone (T) and metabolic syndrome (MS) in different age groups in Taiwanese men. MATERIALS AND METHODS Male participants, regardless of age or any underlying disease, were identified from MJ Health Screening Center in Taiwan from 2007 to 2016 for this cross-sectional study. They were divided into three groups according to age, and further classified according to MS diagnosis. Basic patient characteristics with relevant parameters were obtained. One-way ANOVA of mean T values between different numbers of measures that exceeds the cut-off values of MS components was performed to assess the relationship of T and MS. Logistic regression analysis was also used to estimate the risk for MS with each increment in T, age, and BMI. RESULTS A total of 4,931 men were included. The MS group had significantly lower serum T levels compared to the non-MS group in each age group. The one-way ANOVA found the mean value of T was significantly higher in patients without MS component (6.19±2.12 ng/mL) than those with 1-5 MS components (with one MS component: 5.48±2.13 ng/mL, two MS components: 4.93±2.03 ng/mL, three MS components: 4.37±1.60 ng/mL, four MS components: 4.13±2.89 ng/mL, five MS components: 3.74±1.27 ng/mL, and P<0.001). There was no significant difference between the patients with three components and the patients with four or five components. Logistic regression models with age stratification showed T with lower odds ratio (OR) for MS after adjusting for BMI in those ≥65 years old (OR=0.693; 95% CI=0.559-0.858; P<0.001); 50-64 years old (OR=0.868; 95% CI=0.802-0.940; P<0.001) and <50 years old (OR=0.810; 95% CI=0.758-0.865; P<0.001). CONCLUSION Lower serum T was strongly associated with MS, with the predictive value increasing with age in Taiwanese men.
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Affiliation(s)
- Shang-Rong Zhong
- Department of Family Medicine, Taichung Armed Forces General Hospital, Taichung, Taiwan
| | - Han-Hsuan Yang
- Department of Family Medicine, Taichung Armed Forces General Hospital, Taichung, Taiwan
- Department of Occupational Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
- School of Professional Education and Continuing Studies, National Taiwan University, Taipei, Taiwan
| | - Cheng-Hsi Liao
- Division of Urology, Department of Surgery, Taichung Armed Forces General Hospital, Taichung, Taiwan
- School of Medicine, National Defense Medical Center, Taipei, Taiwan
- Department of Medical Education and Research, Taichung Armed Forces General Hospital, Taichung, Taiwan
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Deng-Ho Yang
- School of Medicine, National Defense Medical Center, Taipei, Taiwan
- Department of Medical Education and Research, Taichung Armed Forces General Hospital, Taichung, Taiwan
- Division of Rheumatology/Immunology/Allergy, Department of Internal Medicine, Taichung Armed Forces General Hospital, Taichung, Taiwan
- Department of Medical Laboratory Science and Biotechnology, Central Taiwan University of Science and Technology, Taichung, Taiwan
| | - Shih-Kai Tu
- Department of Family Medicine, Taichung Armed Forces General Hospital, Taichung, Taiwan
- School of Medicine, National Defense Medical Center, Taipei, Taiwan
| | - Chia-Lien Hung
- Department of Medical Education and Research, Taichung Armed Forces General Hospital, Taichung, Taiwan
| | - Chun-Cheng Liao
- Department of Family Medicine, Taichung Armed Forces General Hospital, Taichung, Taiwan
- School of Medicine, National Defense Medical Center, Taipei, Taiwan
- Department of Medical Education and Research, Taichung Armed Forces General Hospital, Taichung, Taiwan
- Correspondence: Chun-Cheng Liao Email
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Prince JCJ, Safer JD. Endocrine treatment of transgender individuals: current guidelines and strategies. Expert Rev Endocrinol Metab 2020; 15:395-403. [PMID: 32990485 DOI: 10.1080/17446651.2020.1825075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 09/15/2020] [Indexed: 01/07/2023]
Abstract
INTRODUCTION This review summarizes gender affirming medical and surgical care available to transgender individuals, along with proposals to improve medically and culturally appropriate care. AREAS COVERED Transgender individuals are those whose gender identity differs from that recorded at birth (usually based on visualization of external sexual anatomy). In order to align the body with the patient's gender identity, clinicians can provide hormone therapy (HT) to bring sex hormone levels to the range associated with the patient's gender identity. At steady state, monitoring for maintenance of levels, as well as for known risks and complications, is required. Treating clinicians should have knowledge of trans assessment criteria, hormone therapy, surgical options, primary care, and mental health needs of transgender patients. A narrative literature review was conducted using Pubmed and EMBASE with articles then selected for relevance. The initial search terms were: androgen suppression, antiandrogen, breast development, chest reconstruction, cisgender, estrogen, fertility preservation, gender-affirming surgery, gender identity, gender incongruence, genital reconstruction, hormone replacement, hyperlipidemia, orchiectomy, prolactin, prostate atrophy, spermatogenesis, spironolactone, testosterone, thrombogenesis, transgender, and virilization. EXPERT OPINION Although guidelines exist and examples of training are available, systematic formal training must be implemented to truly mainstream high-quality gender-affirming health care .
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Affiliation(s)
| | - Joshua D Safer
- Center for Transgender Medicine and Surgery, Icahn School of Medicine at Mount Sinai , New York, NY, USA
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Tardivo V, Penner F, Garbossa D, Di Perna G, Pacca P, Salvati L, Altieri R, Grottoli S, Zenga F. Surgical management of pituitary adenomas: does age matter? Pituitary 2020; 23:92-102. [PMID: 31797173 DOI: 10.1007/s11102-019-01014-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PURPOSE Along with increased life expectancy and improvements in the diagnostic tools and techniques, the number of elderly patients with symptomatic pituitary tumors being evaluated for surgery is increasing. To date, contrasting results of the safety and effectiveness of transsphenoidal surgery in patients over 65 years old were published in the medical literature. An investigation concerning the extension of resection, post operative complications and, recovery rate from endocrinological and visual symptoms in elderly patients who underwent transsphenoidal surgery for pituitary adenoma was conducted. METHODS A retrospective review, which included a series of 81 patients 65 years old or older who underwent endoscopic endonasal surgery for pituitary adenomas was analyzed. Pre operative and post operative data were collected and patients were then compared among four age groups: 65-69 years old, 70-74 years old, 75-79 years old and 80 years and over. The results were then compared with the findings from the medical literature review. RESULTS The statistical analysis failed to highlight any difference in terms of clinical presentation or complications among the four age groups, however there seems to be a slightly higher risk of post operative hypopituitarism in patients over 74 years old. CONCLUSION The results of the study seem to confirm that transsphenoidal surgery for PA is safe and effective among patients that are 65 and over. Moreover, a partial resection is preferred over a gross total one in order to reduce the surgical risk.
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Affiliation(s)
- Valentina Tardivo
- Department of Surgical Sciences, University of Torino, 10126, Turin, Italy.
- Neurosurgery Unit, Ente Ospedaliero Galliera, Genoa, Italy.
| | - Federica Penner
- Department of Neuroscience "Rita Levi Montalcini", Neurosurgery Unit, University of Torino, 10126, Turin, Italy
| | - Diego Garbossa
- Department of Neuroscience "Rita Levi Montalcini", Neurosurgery Unit, University of Torino, 10126, Turin, Italy
| | - Giuseppe Di Perna
- Department of Neuroscience "Rita Levi Montalcini", Neurosurgery Unit, University of Torino, 10126, Turin, Italy
| | - Paolo Pacca
- Department of Neuroscience "Rita Levi Montalcini", Neurosurgery Unit, University of Torino, 10126, Turin, Italy
| | - Luca Salvati
- Department of Neuroscience "Rita Levi Montalcini", Neurosurgery Unit, University of Torino, 10126, Turin, Italy
| | - Roberto Altieri
- Department of Anatomy, Biology and Genetics, Legal Medicine, Neuroscience, Diagnostic Pathology, Hygiene and Public Health (DANA) "Gian Filippo Ingrassia", Univeristy of Catania, Catania, Italy
| | - Silvia Grottoli
- Division of Endocrinology, Diabetes and Metabolism, Department of Medical Science, University of Torino, Turin, Italy
| | - Francesco Zenga
- Department of Neuroscience "Rita Levi Montalcini", Neurosurgery Unit, University of Torino, 10126, Turin, Italy
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du Plessis J, Bester HL, Julyan M, Cockeran M. Acute changes in haematocrit leading to polycythaemia in late-onset hypogonadism patients that receive testosterone replacement therapy: a South African study. JOURNAL OF ENDOCRINOLOGY, METABOLISM AND DIABETES OF SOUTH AFRICA 2019. [DOI: 10.1080/16089677.2018.1553344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Jesslee du Plessis
- Medicine Usage in South Africa (MUSA), North-West University, Potchefstroom, South Africa
| | | | - Marlene Julyan
- Medicine Usage in South Africa (MUSA), North-West University, Potchefstroom, South Africa
| | - Marike Cockeran
- School for Computer, Statistical and Mathematical Sciences, North-West University, Potchefstroom, South Africa
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Kirpatovskii VI, Efremov GD, Frolova EV. Ectopic Organogenesis after Allotransplantation of Freshly Removed or Cryopreserved Neonatal Testicle under the Renal Capsule in Rats. Bull Exp Biol Med 2018; 166:268-273. [PMID: 30488204 DOI: 10.1007/s10517-018-4330-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Indexed: 12/13/2022]
Abstract
In experiments on white outbred male rats, a freshly removed (20 experiments) or cryopreserved (10 experiments) testicle from newborn rats (1-2 days after birth) was transplanted under the renal capsule after bilateral orchiectomy. In all experiments with transplantation of freshly removed testicle, it was engrafted. In 3 months, histological examination revealed the formation of mature seminiferous tubules, but spermatogenesis was blocked at the stage of spermatogonia; groups of proliferating Leydig cells in the loose connective tissue between the tubules were also seen. In 6 and 12 months, the status of the seminiferous tubules remained unchanged, but structures typical of the epididymis and developing vas deferens were revealed. The number of proliferating Leydig cells increased. The initially low testosterone concentration in the blood of castrated males increased significantly as soon as in 1 month after transplantation and grew up to 3 months, remaining at a level ~50% of normal. Engraftment of cryopreserved neonatal testicular tissue was observed in 60% cases, however, engrafted tissue, similar to the fresh one, retained the ability for organogenesis with the formation of mature seminiferous tubules, epididymis, and groups of proliferating Leydig cells. The dynamics of blood testosterone concentration in rats with cryopreserved and fresh transplantation was similar. Subcapsular transplantation did not adversely affect the kidneys, which was seen from normal histological structure of the kidneys and creatinine and urea concentrations in the blood.
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Affiliation(s)
- V I Kirpatovskii
- N. A. Lopatkin Research Institute of Urology and Interventional Radiology, Affiliated Branch of National Medical Research Radiological Center, Ministry of Health of the Russian Federation, Moscow, Russia.
| | - G D Efremov
- N. A. Lopatkin Research Institute of Urology and Interventional Radiology, Affiliated Branch of National Medical Research Radiological Center, Ministry of Health of the Russian Federation, Moscow, Russia
| | - E V Frolova
- All-Russian Institute of Scientific and Technical Information, Russian Academy of Sciences, Moscow, Russia
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