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Testosterone deficiency

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https://www.readbyqxmd.com/read/28544660/altered-secretion-of-sertoli-cells-hormones-in-2-year-old-prepubertal-cryptorchid-boys-a-cross-sectional-study
#1
S M Hamdi, T Almont, P Galinier, R Mieusset, P Thonneau
In cryptorchid boys, failures in germ cell development have been clearly established. Some studies reported some abnormalities in Sertoli cells morphology but the results regarding their endocrine secretion remain controversial. To compare testicular hormone levels in young boys with and without cryptorchidism, we performed a cross-sectional hospital-based study. From surgery appointment records, we identified a case group of boys with unilateral or bilateral cryptorchidism and a control group undergoing dental care, minor osteoarticular or dermal surgery...
May 23, 2017: Andrology
https://www.readbyqxmd.com/read/28544654/hypogonadism-in-testicular-cancer-patients-is-associated-with-risk-factors-of-cardiovascular-disease-and-the-metabolic-syndrome
#2
C Bogefors, S Isaksson, J Bobjer, M Kitlinski, I Leijonhufvud, K Link, A Giwercman
More than 95% of testicular cancer are cured but they are at increased long-term risk of cardiovascular disease. The risk of cardiovascular disease and treatment intensity was reported, but it is unknown whether this effect of cancer therapy is direct or indirect, mediated through androgen deficiency. Our aim was, therefore, to evaluate whether testicular cancer patients have increased the prevalence of risk factors of cardiovascular disease and if these risk factors are associated with hypogonadism and/or the cancer treatment given...
May 23, 2017: Andrology
https://www.readbyqxmd.com/read/28540225/testosterone-deficiency-in-adults-and-corresponding-treatment-patterns-across-the-globe
#3
REVIEW
James Anaissie, Kent J DeLay, William Wang, Georgios Hatzichristodoulou, Wayne J Hellstrom
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...
April 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28526632/erythrocytosis-following-testosterone-therapy
#4
REVIEW
Samuel J Ohlander, Bibin Varghese, Alexander W Pastuszak
INTRODUCTION: A rapid increase in awareness of androgen deficiency has led to substantial increases in prescribing of testosterone therapy (TTh), with benefits of improvements in mood, libido, bone density, muscle mass, body composition, energy, and cognition. However, TTh can be limited by its side effects, particularly erythrocytosis. This review examines the literature on testosterone-induced erythrocytosis and polycythemia. AIM: To review the available literature on testosterone-induced erythrocytosis, discuss possible mechanisms for pathophysiology, determine the significance of formulation, and elucidate potential thromboembolic risk...
May 16, 2017: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/28524342/the-effect-of-vitamin-d-supplementation-on-hormonal-and-glycaemic-profile-of-patients-with-pcos-a-meta-analysis-of-randomised-trials
#5
Vasilios Pergialiotis, Nikoleta Karampetsou, Periklis Panagopoulos, Eftihios Trakakis, Nikolaos Papantoniou
BACKGROUND: Vitamin D deficiency is frequently manifested in women with polycystic ovarian syndrome (PCOS). To date, supplementation of deficient patients has not been correlated with the hormonal and metabolic status of these patients. PURPOSE: We aimed to investigate the impact of vitamin D supplementation on the hormonal and metabolic profile of PCOS women. MATERIALS AND METHODS: We searched Medline, Scopus, ClinicalTrials.gov and Cochrane Central Register databases for published randomised controlled trials...
May 19, 2017: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/28497912/testosterone-replacement-therapy-long-term-safety-and-efficacy
#6
REVIEW
Giovanni Corona, Alessandra Sforza, Mario Maggi
Recent position statements and guidelines have raised the distinction between a true and false, age-related hypogonadism (HG) or late-onset hypogonadism (LOH). The former is the consequence of congenital or acquired "organic" damage of the brain centers or of the testis. The latter is mainly secondary to age-related comorbidities and does not require testosterone (T) therapy (TTh). In addition, concerns related to cardiovascular (CV) safety have further increased the scepticism related to TTh. In this paper, we reviewed the available evidence supporting the efficacy of TTh in non-organic HG and its long term safety...
April 30, 2017: World Journal of Men's Health
https://www.readbyqxmd.com/read/28487215/micturition-dysfunction-in-four-month-old-ovariectomized-rats-effects-of-testosterone-replacement
#7
Sandra M Bonilla-Becerra, Mariana G de Oliveira, Fabiano B Calmasini, Julio A Rojas-Moscoso, Angelina Zanesco, Edson Antunes
AIMS: Androgen deficiency has been implicated in urological complications of postmenopausal women. This study examined the effects of testosterone replacements on the lower urinary tract dysfunction in 4-month old ovariectomized (OVX) rats. MAIN METHODS: Sprague-Dawley female rats were OVX bilaterally. Three months later, rats received single intramuscular injections of testosterone undecanoate. Cystometric study, and bladder and urethra smooth muscle reactivities were evaluated...
May 6, 2017: Life Sciences
https://www.readbyqxmd.com/read/28486593/prevalence-of-obesity-associated-gonadal-dysfunction-in-severely-obese-men-and-women-and-its-resolution-after-bariatric-surgery-a-systematic-review-and-meta-analysis
#8
Hector F Escobar-Morreale, Elisa Santacruz, Manuel Luque-Ramírez, José I Botella Carretero
BACKGROUND: Sexual dimorphism manifests noticeably in obesity-associated gonadal dysfunction. In women, obesity is associated with androgen excess disorders, mostly the polycystic ovary syndrome (PCOS), whereas androgen deficiency is frequently present in obese men in what has been termed as male obesity-associated secondary hypogonadism (MOSH). Obesity-associated gonadal dysfunction, consisting of PCOS in women and MOSH in men, is a frequent finding in patients with severe obesity and it may be ameliorated or even resolve with marked weight loss, especially after bariatric surgery...
May 9, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28479763/microdissection-testicular-sperm-extraction-in-men-with-nonobstructive-azoospermia-experience-of-king-saud-university-medical-city-riyadh-saudi-arabia
#9
Saleh Binsaleh, Dulaim Alhajeri, Khaled Madbouly
OBJECTIVES: Microdissection testicular sperm extraction (micro-TESE) is an optimal technique of sperm extraction for intracytoplasmic sperm injection. This study is to present our experience in micro-TESE and evaluate the relation of its sperm retrieval rate (SRR) with patients' characteristics, testicular functions, and histological parameters as well as previous sperm retrieval interventions. MATERIALS AND METHODS: We retrospectively reviewed records of 255 patients with nonobstructive azoospermia who underwent micro-TESE between 2011 and 2014...
April 2017: Urology Annals
https://www.readbyqxmd.com/read/28474561/hormones-and-sarcopenia
#10
John E Morley
Sarcopenia is defined as the loss of muscle mass associated with a loss of muscle function, e.g., walking speed. A number of consensus definitions exist for sarcopenia with cut-off points being ethnically specific. A rapid screen test (SARC-F) is available and does not require different ethnic cut-off points. Sarcopenia leads to the development of frailty, disability and mortality. The prevalence of sarcopenia varies from 1-29% in community-dwelling and 14 to 33% in long-term care populations. Hormones play a role in the development of muscle mass and in the regulation of muscle strength...
November 23, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28472487/11-oxygenated-androgens-are-biomarkers-of-adrenal-volume-and-testicular-adrenal-rest-tumors-in-21-hydroxylase-deficiency
#11
Adina F Turcu, Ashwini Mallappa, Meredith Elman, Nilo A Avila, Jamie Marko, Hamsini Rao, Alexander Tsodikov, Richard J Auchus, Deborah P Merke
Context: Patients with 21-hydroxylase deficiency (21OHD) suffer from long-term complications, which might result from poor disease control and/or glucocorticoid overtreatment. Lack of optimal biomarkers has made it challenging to tailor therapy and to predict long-term outcomes. Objective: To identify biomarkers of disease control and long-term complications in 21OHD. Setting and participants: Cross-sectional study of 114 patients (70 males), ages 2 to 67 (median, 15) years, seen in a tertiary referral center...
May 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28471544/neonatal-hypothyroidism-affects-testicular-glucose-homeostasis-through-increased-oxidative-stress-in-prepubertal-mice-effects-on-glut3-glut8-and-cx43
#12
D Sarkar, S K Singh
Thyroid hormones (THs) play an important role in maintaining the link between metabolism and reproduction and the altered THs status is associated with induction of oxidative stress in various organs like brain, heart, liver and testis. Further, reactive oxygen species play a pivotal role in regulation of glucose homeostasis in several organs, and glucose utilization by Leydig cells is essential for testosterone biosynthesis and thus is largely dependent on glucose transporter 8 (GLUT8). Glucose uptake by Sertoli cells is mediated through glucose transporter 3 (GLUT3) under the influence of THs to meet energy requirement of developing germ cells...
May 4, 2017: Andrology
https://www.readbyqxmd.com/read/28470410/the-presence-of-symptoms-of-testosterone-deficiency-in-the-exercise-hypogonadal-male-condition-and-the-role-of-nutrition
#13
David R Hooper, William J Kraemer, Catherine Saenz, Kevin E Schill, Brian C Focht, Jeff S Volek, Carl M Maresh
PURPOSE: High volumes of aerobic exercise have been associated with reduced testosterone (T), known as the exercise-hypogonadal male condition (EHMC). Although the presence of low T has been identified, few studies have assessed the presence of androgen-deficient symptoms. The purpose of this investigation is to assess men exhibiting EHMC and evaluate their hypothalamic-pituitary-gonadal axis, the presence of hypogonadal symptoms, and also investigate a possible contribution of inadequate nutrition to the condition...
May 3, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28459143/testosterone-deficiency-and-nocturia-a-review
#14
REVIEW
Kazuyoshi Shigehara, Koji Izumi, Atsushi Mizokami, Mikio Namiki
Nocturia causes lack of sleep and excessive daytime somnolence, reducing overall well-being, vitality, productivity, and mental health. Nocturia is significantly associated with testosterone deficiency, lower urinary tract symptoms (LUTS), and sleep disorders. The development of LUTS is commonly associated with testosterone deficiency in elderly men, and recent studies have suggested that testosterone has an ameliorative effect on nocturia. In hypogonadal men with nocturia, a negative feedback cycle can arise, in which testosterone deficiency leads to the development of nocturia, and nocturia contributes to the decline in testosterone levels...
April 2017: World Journal of Men's Health
https://www.readbyqxmd.com/read/28437281/cardioprotection-by-low-dose-of-estrogen-and-testosterone-at-the-physiological-ratio-on-ovx-rats-during-ischemia-reperfusion-injury
#15
Lu Fu, Yuyu Liu, Jiaxing Wang, Yu Sun, Lei Zhang, Ting Wu, Yiqian Li, Bin Wang, Shuting Huang, Huimin Bu, Hong Sun
Although estrogen and testosterone deficiency have often been associated with the development of cardiac diseases in postmenopausal women, the benefits of estrogen or testosterone therapy are controversial. Supplementation high dose of estrogen or testosterone alone has been associated with many side-effects, especially estrogen. This study was aimed to investigate whether supplementation of testosterone in combination with low-dose estrogen conferred stronger cardioprotective effects on ovariectomized rats subjected to ischemia/reperfusion (I/R) injury...
April 18, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28436486/muscle-wasting-and-cachexia-in-heart-failure-mechanisms-and-therapies
#16
REVIEW
Stephan von Haehling, Nicole Ebner, Marcelo R Dos Santos, Jochen Springer, Stefan D Anker
Body wasting is a serious complication that affects a large proportion of patients with heart failure. Muscle wasting, also known as sarcopenia, is the loss of muscle mass and strength, whereas cachexia describes loss of weight. After reaching guideline-recommended doses of heart failure therapies, the most promising approach to treating body wasting seems to be combined therapy that includes exercise, nutritional counselling, and drug treatment. Nutritional considerations include avoiding excessive salt and fluid intake, and replenishment of deficiencies in trace elements...
June 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28435402/synchronous-bilateral-testis-cancer-clinical-and-oncological-management
#17
Davide Campobasso, Stefania Ferretti, Antonio Frattini
Synchronous bilateral testis cancer (SBTC) is a rare event. It represents only 0.5-1% of all new cases of testicular cancer. Patients with this disease require careful management for psychological, oncological, and medical problems. We performed a PubMed search for all series that reported SBTC. We considered only articles in English, reporting on more than three cases. We also performed an analysis of the reported evidence regarding testosterone replacement and surgical treatment. We found 10 studies satisfying inclusion criteria for a total of 73 patients...
2017: Contemporary Oncology Współczesna Onkologia
https://www.readbyqxmd.com/read/28434676/meta-analysis-of-results-of-testosterone-therapy-on-sexual-function-based-on-international-index-of-erectile-function-scores
#18
Giovanni Corona, Giulia Rastrelli, Abraham Morgentaler, Alessandra Sforza, Edoardo Mannucci, Mario Maggi
CONTEXT: The interpretation of available clinical evidence related to the effect of testosterone (T) treatment (TTh) on sexual function has been inconsistent, in part due to the use of different and self-reported measures to assess outcomes. The International Index of Erectile Function (IIEF) is the most frequently used validated tool to assess male sexual function. OBJECTIVE: To perform a meta-analysis of available data evaluating the effect of TTh on male sexual function using IIEF as the primary outcome...
April 20, 2017: European Urology
https://www.readbyqxmd.com/read/28429281/impact-of-thyroid-disease-on-testicular-function
#19
REVIEW
Sandro La Vignera, Roberto Vita, Rosita A Condorelli, Laura M Mongioì, Silvia Presti, Salvatore Benvenga, Aldo E Calogero
INTRODUCTION: Testis was considered unresponsive to thyroid hormone for a long time. However, like in animals, the presence of thyroid hormone receptors in different testicular cell types was demonstrated also in humans. Accordingly, thyrotoxicosis and hypothyroidism have remarkable effects on testicular function and more extensively on fertility. REVIEW: Thyrotoxicosis and hypothyroidism are associated with changes affecting the endocrine, sexual, or reproductive functions...
April 20, 2017: Endocrine
https://www.readbyqxmd.com/read/28416169/pathologic-fracture-of-the-thoracic-spine-in-a-male-master-ultra-marathoner-due-to-the-combination-of-a-vertebral-hemangioma-and-osteopenia
#20
Beat Knechtle, Pantelis T Nikolaidis, Bruno Lutz, Thomas Rosemann, Christian B Baerlocher
Vertebral hemangiomas are the most common benign vertebral neoplasms and are generally asymptomatic. In the present study, we report the case of a 52-year-old male master ultra-marathoner suffering from a pathologic fracture of the thoracic spine due to a vertebral hemangioma. A further examination in the athlete revealed an accompanying osteopenia, which was most likely due to a deficiency in both vitamin D and testosterone. The treatment of the fracture consisted of percutaneous vertebroplasty. Shortly after the operation the athlete was able to continue running...
March 27, 2017: Medicina
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