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Testosterone deficiency

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https://www.readbyqxmd.com/read/28807822/does-long-term-androgen-deficiency-lead-to-metabolic-syndrome-in-middle-aged-rats
#1
Veronika Borbélyová, Emese Domonkos, Janka Bábíčková, Ľubomíra Tóthová, Mária Kačmárová, Oľga Uličná, Daniela Ostatníková, Július Hodosy, Peter Celec
Evidence from clinical observational studies and animal experiments suggests that hypogonadism is associated with the metabolic syndrome. In most of the experiments, androgen deficiency is induced by gonadectomy in the adulthood and relatively short-term effects of hypogonadism on metabolic parameters are usually observed. The purpose of this study was to evaluate the metabolic effects of long-term androgen deficiency starting before puberty in middle-aged male rats. The components of the metabolic syndrome were examined in male, female and gonadectomized male rats at the age of 18months...
August 11, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28782904/role-of-olfactory-reactions-nociception-and-immunoendocrine-shifts-in-addictive-disorders
#2
Elena Masterova, Tatiana Nevidimova, Dariya Savochkina, Valentina Nikitina, Olga Lobacheva, Tamara Vetlugina, Nikolay Bokhan
BACKGROUND AND OBJECTIVES: Addictive pathology is associated with nervous, immune, and endocrine shifts. Meanwhile, the nature of intersystemic relationship lying beneath addictive disorders remains unclear. The purpose of the study was to identify neuroimmunoendocrine markers of addictive disorders in male subjects defining the nature of their interaction. METHODS: The study enrolled 69 subjects aged 18-43 years: 59 males and 10 females divided into those with addictive disorders (n = 39) and conditionally healthy subjects (n = 30)...
August 7, 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/28774765/novel-mutations-of-hsd17b3-in-three-chinese-patients-with-46-xy-disorders-of-sex-development
#3
Bingqing Yu, Zhaoxiang Liu, Jiangfeng Mao, Xi Wang, Junjie Zheng, Shuyu Xiong, Mingxuan Cui, Wanlu Ma, Qibin Huang, Hongli Xu, Bingkun Huang, Min Nie, Xueyan Wu
17β-Hydroxysteroid dehydrogenase type 3 (17β-HSD3) converts the inactive Δ4-androstenedione (A) to testosterone (T). Its deficiency is the most common testosterone biosynthesis defect that results in 46,XY Disorders Of Sex Development (DSD). However, the disease is difficult to distinguish from other 46,XY DSD for similar clinical phenotypes. Therefore, genetic testing provides good criteria for the diagnosis of the disease. In this study, HSD17B3 gene was examined in 3 unrelated Chinese patients with 46,XY DSD...
August 1, 2017: Steroids
https://www.readbyqxmd.com/read/28765273/cross-sex-testosterone-therapy-in-ovariectomized-mice-addition-of-low-dose-estrogen-preserves-bone-architecture
#4
Laura G Goetz, Ramanaiah Mamillapalli, Maureen J Devlin, Amy E Robbins, Masoumeh Majidi-Zolbin, Hugh S Taylor
Cross-sex hormone therapy (XHT) is widely used by transgender people to alter secondary sex characteristics to match their desired gender presentation. Here we investigate the long-term effects of XHT on bone health, using a murine model. Female mice underwent ovariectomy at either 6 or 10 weeks, and began weekly testosterone or vehicle injections. Dual-energy X-ray Absorptiometry (DXA) was performed to measure bone mineral density (BMD) and microCT was performed to compare femoral cortical and trabecular bone architecture...
August 1, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28763818/-testosterone-deficiency-and-dementia
#5
Christina Dimopoulou, Günter K Stalla
No abstract text is available yet for this article.
August 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28759182/intima-media-thickness-of-common-carotids-and-abdominal-aorta-in-children-and-adolescents-with-congenital-adrenal-hyperplasia-due-to-21-hydroxylase-deficiency-in-relation-to-their-genotypes
#6
Dominika Janus, Malgorzata Wojcik, Katarzyna Tyrawa, Magdalena Janeczko, Mirosław Bik-Multanowski, Jerzy B Starzyk
BACKGROUND: Patients with congenital adrenal hyperplasia (CAH) are at risk of vascular and metabolic complications due to steroid therapy and increased adrenal androgens exposure. OBJECTIVE: of the study was to evaluate the relation between patient's genotype and (1) intima media thickness of abdominal aorta (AIMT) and common carotid arteries (CIMT) and (2) metabolic profile. MATERIAL AND METHODS: In 71 patients (27 boys) aged from 1.5 to 17...
July 2, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28755466/hypospadias-intrauterine-growth-restriction-and-abnormalities-of-the-placenta
#7
M Hassan Toufaily, Drucilla J Roberts, Marie-Noel Westgate, Anne-Therese Hunt, Lewis B Holmes
BACKGROUND: Hypospadias is more common among male infants with growth restriction, defined as a birth weight less than the 10(th) centile, than in infants with a normal birth weight. Intrauterine growth retardation (IUGR) has been associated, also, with abnormalities of the placenta, such as maternal vascular malperfusion. In a consecutive sample of newborn infants, the association between hypospadias, IUGR and abnormalities of the placenta could be analyzed. METHODS: Affected infants were identified among 289,365 liveborn and stillborn infants in the Active Malformations Surveillance Program between 1972 and 2012...
July 29, 2017: Birth defects research
https://www.readbyqxmd.com/read/28753796/serum-concentrations-of-sex-hormone-binding-globulin-vary-widely-in-younger-and-older-men-clinical-data-from-a-men-s-health-practice
#8
Yonah Krakowsky, William Conners, Abraham Morgentaler
BACKGROUND: The testosterone (T) status of a man is influenced by serum concentrations of sex hormone-binding globulin (SHBG). Specifically, tight binding of T to SHBG is believed to render the SHBG-bound T fraction biologically unavailable, meaning that interpretation of T levels in the clinical setting depends in part on knowledge of SHBG concentrations. Although SHBG levels have been reported in population studies, there is scant information for men presenting with clinical symptoms...
June 3, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28740585/testosterone-and-the-heart
#9
Travis Goodale, Archana Sadhu, Steven Petak, Richard Robbins
Testosterone (T) has a number of important effects on the cardiovascular system. In men, T levels begin to decrease after age 40, and this decrease has been associated with an increase in all-cause mortality and cardiovascular (CV) risk. Low T levels in men may increase their risk of developing coronary artery disease (CAD), metabolic syndrome, and type 2 diabetes. Reduced T levels in men with congestive heart failure (CHF) portends a poor prognosis and is associated with increased mortality. Studies have reported a reduced CV risk with higher endogenous T concentration, improvement of known CV risk factors with T therapy, and reduced mortality in T-deficient men who underwent T replacement therapy versus untreated men...
April 2017: Methodist DeBakey Cardiovascular Journal
https://www.readbyqxmd.com/read/28739554/46-xy-disorder-of-sex-development-due-to-17-beta-hydroxysteroid-dehydrogenase-type-3-deficiency-in-an-infant-of-greek-origin
#10
Assimina Galli-Tsinopoulou, Anastasios Serbis, Eleni Kotanidou, Eleni Litou, Vaia Dokousli, Konstantina Mouzaki, Pavlos Fanis, Vassos Neocleous, Nicos Skordis
17β-hydroxysteroid dehydrogenase type 3 (17βHSD-3) enzyme catalyzes the conversion of androstenedione (Δ4) to testosterone (T) in the testes of the developing fetus, thus playing a crucial role in the differentiation of the gonads and in establishing the male sex phenotype. Any mutation in the encoding gene (HSD17B3) can lead to a varying degree of undervirilization of the affected male that ranges from completely undervirilized external female genitalia to predominantly male with micropenis and hypospadias...
July 24, 2017: Journal of Clinical Research in Pediatric Endocrinology
https://www.readbyqxmd.com/read/28735014/initial-clinical-experience-with-testosterone-undecanoate-therapy-aveed-%C3%A2-in-testosterone-deficient-men-in-the-united-states
#11
Abraham Morgentaler, Yonah Krakowsky, William Conners, Emily Davidson, Alex Rawji
OBJECTIVE: To report our initial experiences with TU 750mg in testosterone-deficient men. METHODS: All patients receiving TU 750mg at our center between July 1 2014 to August 1 2016 were identified. Clinical response was assessed via structured interviews and laboratory evaluations. Adverse events were documented, including increases in prostate specific antigen (PSA), hematocrit (Hct), and the development of post-injection cough. RESULTS: More than two injections were received by 147 men, with mean age 63...
July 19, 2017: Urology
https://www.readbyqxmd.com/read/28724410/identification-and-characterization-of-long-non-coding-rnas-in-subcutaneous-adipose-tissue-from-castrated-and-intact-full-sib-pair-huainan-male-pigs
#12
Jing Wang, Liushuai Hua, Junfeng Chen, Jiaqing Zhang, Xianxiao Bai, Binwen Gao, Congjun Li, Zhihai Shi, Weidong Sheng, Yuan Gao, Baosong Xing
BACKGROUND: Long non-coding RNAs (lncRNAs) regulate adipose tissue metabolism, however, their function on testosterone deficiency related obesity in humans is less understood. For this research, intact and castrated male pigs are the best model animal because of their similar proportional organ sizes, cardiovascular systems and metabolic features. RESULTS: We identified lncRNAs in subcutaneous adipose tissue by deep RNA-sequencing using the intact and castrated Huainan male pigs...
July 19, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28721134/osteoporosis-in-men
#13
REVIEW
Waldemar Misiorowski
Osteoporotic fractures are the leading cause of morbidity and mortality among aging men. 30% of all hip fractures occur in men, and mortality resulting from not only the hip fracture, but also the spine and other major osteoporotic fractures, is significantly higher in men than in women. As in women, hypogonadism is the best documented risk factor for developing osteoporosis in men. In older men, testosterone levels are negatively correlated with the risk of fractures, and it seems that this age-related testosterone deficiency should not be considered as one of the many causes of secondary osteoporosis, rather one of the major and most important mechanisms of senile osteoporosis...
June 2017: Przeglad Menopauzalny, Menopause Review
https://www.readbyqxmd.com/read/28721133/late-onset-hypogonadism
#14
REVIEW
Piotr Dudek, Jarosław Kozakowski, Wojciech Zgliczyński
In Poland, the number of men over the age of 50 years exceeds 6 million. It is estimated that about 2-6% of this population develops symptoms of late-onset hypogonadism (LOH). In men, testosterone deficiency increases slightly with age. LOH is a clinically and biochemically defined disease of older men with serum testosterone level below the reference parameters of younger healthy men and with symptoms of testosterone deficiency, manifested by pronounced disturbances of quality of life and harmful effects on multiple organ systems...
June 2017: Przeglad Menopauzalny, Menopause Review
https://www.readbyqxmd.com/read/28717276/testosterone-versus-clomiphene-citrate-in-managing-symptoms-of-hypogonadism-in-men
#15
Pranav Dadhich, Ranjith Ramasamy, Jason Scovell, Nathan Wilken, Larry Lipshultz
INTRODUCTION: Both clomiphene citrate (CC) and testosterone supplementation therapy (TST) are effective treatments for men with hypogonadism. We sought to compare changes in symptoms and treatment efficacy in hypogonadal men before and after receiving CC and TST. PATIENTS AND METHODS: 52 men who received TST and 23 men who received CC for symptomatic hypogonadism were prospectively followed for change in hormone levels and symptoms after treatment. These men were also compared to eugonadal men who were not on CC or TST during the same period...
July 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28710257/regulation-of-bone-metabolism-by-sex-steroids
#16
Sundeep Khosla, David G Monroe
Osteoporosis is a significant public health problem, and a major cause of the disease is estrogen deficiency following menopause in women. In addition, considerable evidence now shows that estrogen is also a major regulator of bone metabolism in men. Since the original description of the effects of estrogen deficiency on bone by Fuller Albright more than 70 years ago, there has been enormous progress in understanding the mechanisms of estrogen and testosterone action on bone using human and mouse models. Although we understand more about the effects of estrogen on bone as compared with testosterone, both sex steroids do play important roles, perhaps in a somewhat compartment-specific (i...
July 14, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28699484/immune-response-to-native-lipoproteins-induces-visceral-obesity-and-aortic-wall-injury-in-rats-the-role-of-testosterone
#17
Kseniya Fomina, Liubov Beduleva, Igor Menshikov, Marina Marina Anikaeva, Daria Suntsova, Alexandr Sidorov, Elena Stolyarova
OBJECTIVES: The underlying mechanism of atherosclerosis and visceral obesity remains unknown. The purpose of this study was to test the hypothesis that atherosclerosis and visceral obesity are caused by an immune response to native plasma lipoproteins, and the atherogenic and adipogenic effects of the antibodies to native lipoproteins stem from the androgen deficiency that is created. METHODS: Wistar rats were immunized with native human (nh) low-density (LDL) or high-density lipoproteins (HDL)...
July 11, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/28679145/the-effect-of-aromatase-on-the-reproductive-function-of-obese-males
#18
Xiaolin Xu, Mingqi Sun, Jifeng Ye, Dandan Luo, Xiaohui Su, Dongmei Zheng, Li Feng, Ling Gao, Chunxiao Yu, Qingbo Guan
Obesity has increased dramatically worldwide, which is associated with male infertility. Androgen deficiency, impaired spermatogenesis, and erectile dysfunction are characteristics of male infertility. The balance of androgens and estrogens is essential for maintaining normal reproductive function in males. Aromatase, the rate-limiting enzyme in the conversion of androgens into estrogens, is present in various tissues. The expression of aromatase is proportional to body fat mass and causes more fat accumulation, thus forming a vicious cycle...
August 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28673432/pharmacokinetics-clinical-efficacy-safety-profile-and-patient-reported-outcomes-in-patients-receiving-subcutaneous-testosterone-pellets-900-mg-for-treatment-of-symptoms-associated-with-androgen-deficiency
#19
Chris G McMahon, Neil Shusterman, Brian Cohen
BACKGROUND: Implantation of testosterone doses of at least 150 to 450 mg (ie, two to six pellets) is common clinical practice despite a lack of prospective data. AIM: To evaluate pharmacokinetics, clinical efficacy, safety, and patient-reported outcomes in men with androgen deficiency who received implantation of testosterone pellets (900 mg) in an open-label study. METHODS: Men with androgen deficiency (serum testosterone < 300 ng/dL [10...
July 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28670536/osteoporosis-in-otherwise-healthy-patients-with-type-2-diabetes-a-prospective-gender-based-comparative-study
#20
Balram Sharma, Hema Singh, Praveen Chodhary, Sanjay Saran, Sandeep Kumar Mathur
BACKGROUND AND OBJECTIVE: Type 2 diabetes mellitus (T2DM) may affect bone loss differentially in adult males and postmenopausal females. We evaluated the prevalence of osteoporosis in otherwise healthy adults with T2DM. MATERIALS AND METHODS: In a cross-sectional study, adults with T2DM, aged 50 years and above, were evaluated for bone mineral density (BMD) using dual-energy X-ray absorptiometry (DXA) scan at spine and hip. T-score of ≤-2.5 was defined as osteoporosis and score -2...
July 2017: Indian Journal of Endocrinology and Metabolism
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