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https://www.readbyqxmd.com/read/28924485/hypogonadotropic-hypogonadism-in-human-immunodeficiency-virus-infected-men-uncommonly-low-testosterone-levels
#1
Ana Coelho Gomes, José Maria Aragüés, Sílvia Guerra, Joana Fernandes, Mário Rui Mascarenhas
Hypogonadotropic hypogonadism (HH) is common and occurs prematurely in HIV-infected men. However, HH with very low testosterone has not been described. Three men with normal pubertal development and HIV1 diagnosis at the ages of 22, 34 and 35 years. All complained of decreased libido, anejaculation and erectile dysfunction thirteen years, six months and one year after HIV diagnosis, respectively. Two had depressive syndrome and two were treated with antiretroviral therapy. Laboratory tests revealed isolated HH in all...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28923177/androgens-and-cardiovascular-disease-in-women-and-men
#2
REVIEW
Eleni Armeni, Irene Lambrinoudaki
Cardiovascular disease is the leading cause of death in both women and men. Its pathogenesis is multifactorial, with sex hormones playing an important role. Androgens have both direct and indirect effects on the vasculature. This review summarizes evidence on the association of both endogenous and exogenous androgens with subclinical and overt cardiovascular disease in women and men. Concerning women, both high and low levels of endogenous androgens have been associated with cardiovascular disease, while other studies have reported no association...
October 2017: Maturitas
https://www.readbyqxmd.com/read/28919451/biphasic-modulation-of-neuro-and-interrenal-steroidogenesis-in-juvenile-african-sharptooth-catfish-clarias-gariepinus-exposed-to-waterborne-di-2-ethylhexyl-phthalate
#3
Augustine Arukwe, Oju R Ibor, Aina O Adeogun
Receptor (i.e genomic) and non-receptor (or non-genomic) effects of endocrine toxicology have received limited or almost non-existent attention for tropical species and regions. In the present study, we have studied the effects of di-(2-ethylhexyl) phthalate (DEHP) on neuro- and interrenal steroidogenesis of the African catfish (Clarias gariepinus) using molecular, immunochemical and physiological approaches. Juvenile fish (mean weight and length: 5.6 ± 0.6g and 8.2 ± 1.2 cm, respectively), were randomly distributed into ten 120 L rectangular glass tanks containing 60 L of dechlorinated tap water, at 50 fish per exposure group...
September 14, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28914204/a-review-on-the-effects-of-testosterone-supplementation-in-hypogonadal-men-with-cognitive-impairment
#4
Mohamad Nur Vaizura, Soelaiman Ima-Nirwana, Kok-Yong Chin
Cognitive function and testosterone level of men decline concurrently with aging. Low testosterone levels are associated with higher risk of Alzheimer's disease and mild cognitive impairment in men. There are continuous debates on whether this relationship is casual or causal. This paper aims to summarize the current evidence on the association between testosterone level and cognitive function in elderly men. The presence of testosterone, androgen receptor and its responsive genes hint that testosterone has biological functions in the central nervous system...
September 13, 2017: Current Drug Targets
https://www.readbyqxmd.com/read/28912924/relationship-between-serum-total-testosterone-concentration-and-augmentation-index-at-radial-artery-in-japanese-postmenopausal-patients
#5
Takashi Hitsumoto
BACKGROUND: The significance of testosterone as a risk factor for cardiovascular disease (CVD) in females is controversial. This cross-sectional study aimed to elucidate the relationship between serum total testosterone concentration (T-T) and augmentation index at the radial artery (r-AIx) as a marker of arterial function in Japanese postmenopausal patients. METHODS: A total of 447 postmenopausal patients with traditional cardiovascular risk factors and/or a history of CVD (age (mean ± standard deviation (SD)), 73 ± 10 years) were enrolled...
October 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/28905760/re-high-prevalence-of-low-serum-biologically-active-testosterone-in-older%C3%A2-male-veterans
#6
Allen D Seftel
No abstract text is available yet for this article.
October 2017: Journal of Urology
https://www.readbyqxmd.com/read/28905758/re-testosterone-treatment-and-coronary-artery-plaque-volume-in-older%C3%A2-men-with-low-testosterone
#7
Allen D Seftel
No abstract text is available yet for this article.
October 2017: Journal of Urology
https://www.readbyqxmd.com/read/28905168/the-usefulness-of-testosterone-administration-in-identifying-false-positive-elevation-of-serum-human-chorionic-gonadotropin-in-patients-with-germ-cell-tumor
#8
Akitoshi Takizawa, Koji Kawai, Takashi Kawahara, Takahiro Kojima, Satoru Maruyama, Nobuo Shinohara, Shusuke Akamatsu, Tomomi Kamba, Terukazu Nakamura, Osamu Ukimura, Ryosuke Jikuya, Takeshi Kishida, Kenichi Kakimoto, Kazuo Nishimura, Toru Harabayashi, Satoshi Nagamori, Shinichi Yamashita, Yoichi Arai, Yoshitomo Sawada, Noritoshi Sekido, Hidefumi Kinoshita, Tadashi Matsuda, Tohru Nakagawa, Yukio Homma, Hiroyuki Nishiyama
OBJECTIVE: The pituitary production of human chorionic gonadotropin (hCG) can cause false-positive results during or after germ cell tumor (GCT) treatment. Because hypogonadism leads to pituitary hCG production, testosterone administration test (TAT) has been recommended for pituitary hCG diagnosis. However, little is known about its efficacy for the discrimination of pituitary hCG as detected by currently used hCG assays in treatment of GCT. We conducted a retrospective multicenter study to determine the usefulness of TAT...
September 13, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28904054/a-13-steroid-serum-panel-based-on-lc-ms-ms-use-in-detection-of-adrenocortical-carcinoma
#9
David R Taylor, Lea Ghataore, Lewis Couchman, Royce P Vincent, Ben Whitelaw, Dylan Lewis, Salvador Diaz-Cano, Gabriele Galata, Klaus-Martin Schulte, Simon Aylwin, Norman F Taylor
BACKGROUND: Adrenocortical carcinoma (ACC) is a rare malignancy, with an annual incidence of 1 or 2 cases per million. Biochemical diagnosis is challenging because up to two-thirds of the carcinomas are biochemically silent, resulting from de facto enzyme deficiencies in steroid hormone biosynthesis. Urine steroid profiling by GC-MS is an effective diagnostic test for ACC because of its capacity to detect and quantify the increased metabolites of steroid pathway synthetic intermediates...
September 13, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28901866/a-novel-potential-reproductive-effects-of-pterocarpus-marsupium-methanolic-extract-on-testosterone-propionate-induced-polycystic-ovary-syndrome-in-female-albino-rats
#10
Aruna Lingappa Hugar, Amarvani P Kanjikar, Ramesh L Londonkar
Objective To investigate potential reproductive effects of Pterocarpus marsupium methanolic extract on testosterone propionate induced Polycystic Ovarian Syndrome (PCOS) in female albino rats. Methodology PCOS was induced in female albino rats by daily injecting testosterone propionate for 15 days intraperitoneally. Animals are divided into five groups with six rats per group. Group 1: Control group received olive oil, Group 2: Testosterone propionate+natural recovery, Group 3: Testosterone propionate + a dose of clomiphene citrate (standard), Group 4 and 5: Testosterone propionate + low dose (200mg/kg) and high dose (400mg/kg) b...
September 12, 2017: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/28892815/trans-male-voice-in-the-first-year-of-testosterone-therapy-make-no-assumptions
#11
Adrienne B Hancock, Kayla D Childs, Michael S Irwig
Purpose: The purpose of this study was to prospectively examine changes in gender-related voice domain of pitch measured by fundamental frequency, function-related domains of vocal quality, range, and habitual pitch level and the self-perceptions of transmasculine people during their first year of testosterone treatment. Method: Seven trans men received 2 voice assessments at baseline and 1 assessment at 3, 6, 9, and 12 months after starting treatment. Results: Vocal quality measures varied between and within participants but were generally within normal limits throughout the year...
September 18, 2017: Journal of Speech, Language, and Hearing Research: JSLHR
https://www.readbyqxmd.com/read/28888695/characterization-of-seasonal-reproductive-and-stress-steroid-hormones-in-wild-radiated-tortoises-astrochelys-radiata
#12
Andrea F T Currylow, Tsilavo H Rafeliarisoa, Edward E Louis, Craig B Stanford, Soary T Randrianjafizanaka, Sarah M Chinn, Daniel E Crocker
The critically endangered Radiated Tortoise (Astrochelys radiata) is endemic to the southern coastlines of Madagascar. Once common, wild populations of this tortoise have undergone dramatic declines in recent years. Although there have been studies documenting reproductive activities, reproductive physiological parameters are unknown yet may be crucial in the recovery of the species. Over four research seasons in remote field locations native to A. radiata, we surveyed for, radio-tracked, and sampled wild, free ranging tortoises...
September 6, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28887675/how-bad-is-aluminum-exposure-to-reproductive-parameters-in-rats
#13
Viviane G S Mouro, Tatiana P Menezes, Graziela D A Lima, Rafael R Domingues, Ana Cláudia F Souza, Juraci A Oliveira, Sérgio L P Matta, Mariana Machado-Neves
Aluminum (Al) is the most widely distributed metal in the environment and is extensively used in human daily life without any known biological function. It is known that exposure to high concentrations of Al impacts negatively on serum testosterone levels, testicular histomorphometry, and sperm parameters; however, no information is available about the effects of low exposure levels on reproduction. International organizations have established the Al concentration tolerated in drinking water as 3.35 × 10(-4) mg/kg...
September 8, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28886024/clomiphene-citrate-effect-in-obese-men-with-low-serum-testosterone-treated-with-metformin-due-to-dysmetabolic-disorders-a-randomized-double-blind-placebo-controlled-study
#14
Carla Pelusi, Vito Angelo Giagulli, Margherita Baccini, Flaminia Fanelli, Marco Mezzullo, Alessia Fazzini, Nicola Bianchi, Matteo Domenico Carbone, Giovanni De Pergola, Marianna Mastroroberto, Antonio Maria Morselli Labate, Renato Pasquali
CONTEXT: Low testosterone (T) levels are often found in obese men with impaired glucose tolerance (IGT) and overt type 2 diabetes (T2DM); however, the mechanisms underlying this condition and its correct therapy are still under debate. OBJECTIVE: To evaluate the effectiveness of clomiphene citrate (CC) in increasing endogenous T levels in obese men with low serum T and with IGT or T2DM treated with metformin (MET). DESIGN: Cross-over, randomized, double-blind, placebo-controlled study...
2017: PloS One
https://www.readbyqxmd.com/read/28877700/testosterone-inhibits-the-growth-of-prostate-cancer-xenografts-in-nude-mice
#15
Weitao Song, Vikram Soni, Samit Soni, Mohit Khera
BACKGROUND: Traditional beliefs of androgen's stimulating effects on the growth of prostate cancer (PCa) have been challenged in recent years. Our previous in vitro study indicated that physiological normal levels of androgens inhibited the proliferation of PCa cells. In this in vivo study, the ability of testosterone (T) to inhibit PCa growth was assessed by testing the tumor incidence rate and tumor growth rate of PCa xenografts on nude mice. METHODS: Different serum testosterone levels were manipulated in male nude/nude athymic mice by orchiectomy or inserting different dosages of T pellets subcutaneously...
September 7, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28865467/beneficial-effects-of-curcumin-nano-emulsion-on-spermatogenesis-and-reproductive-performance-in-male-rats-under-protein-deficient-diet-model-enhancement-of-sperm-motility-conservancy-of-testicular-tissue-integrity-cell-energy-and-seminal-plasma-amino-acids
#16
Omar A H Ahmed-Farid, Maha Nasr, Rania F Ahmed, Rofanda M Bakeer
BACKGROUND: Malnutrition resulting from protein and calorie deficiency continues to be a major concern worldwide especially in developing countries. Specific deficiencies in the protein intake can adversely influence reproductive performance. The present study aimed to evaluate the effects of curcumin and curcumin nano-emulsion on protein deficient diet (PDD)-induced testicular atrophy, troubled spermatogenesis and decreased reproductive performance in male rats. METHODS: Juvenile rats were fed the protein deficient diet (PDD) for 75 days...
September 2, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28861683/neuroendocrine-response-to-school-load-in-prepubertal-children-focus-on-trait-anxiety
#17
D Kapsdorfer, N Hlavacova, D Vondrova, L Argalasova, L Sevcikova, Daniela Jezova
At the time of school-age, the most frequent stress stimuli are related to school environment and educational process. Anxiety may play a big role in coping with stressful situations associated with school load. To approach this issue, we performed a real-life study at school during the classwork. The sample consisted of 36 healthy children aged 10 years, which were divided to low and high trait anxiety group based on the median value of the anxiety score. The investigations were carried out in the classroom during a stress condition (final exams) and non-stress condition (without any exam)...
August 31, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28861300/low-free-and-bioavailable-testosterone-levels-may-predict-pathologically-proven-high-risk-prostate-cancer-a-prospective-clinical-trial
#18
Göksel Bayar, Hakan Şirin, Mustafa Aydın, Ayşim Özağarı, Orhan Tanrıverdi, Mustafa Kadıhasanoğlu, Muammer Kendirci
OBJECTIVE: To determine the predictive value of free and bioavailable testosterone levels on the detection of high-grade prostate cancer proven by histopathological examination of transrectal prostate biopsy specimens. MATERIAL AND METHODS: A total of 405 patients who underwent transrectal prostate biopsy due to high prostatic specific antigen (PSA) (>2.5 ng/mL) and/or abnormal findings at digital rectal examination were included in this study. Blood free and bioavailable testosterone levels were calculated by the formula recommended by International Society for the Study of the Aging Male (ISSAM)...
September 2017: Turkish Journal of Urology
https://www.readbyqxmd.com/read/28859878/the-adaptiveness-of-a-queuing-strategy-shaped-by-social-experiences-during-adolescence
#19
Tobias D Zimmermann, Sylvia Kaiser, Norbert Sachser
Social experiences during adolescence profoundly influence behavioural and endocrine phenotypes. A key question is whether these environmentally induced changes can adjust the individual to prevailing environmental conditions. Previous work shows that male guinea pigs living in pairs from early adolescence are more aggressive and exhibit distinctly higher cortisol responses than males living in large mixed-sex colonies. In environments with limited numbers of competitors, the high-aggressive phenotype of pair-housed males (PMs) leads to more dominant positions and higher reproductive success compared with colony-housed males (CMs) and thus represents an adaptation to this situation...
August 30, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28859874/biochemical-analysis-of-four-missense-mutations-in-the-hsd17b3-gene-associated-with-46-xy-disorders-of-sex-development-in-egyptian-patients
#20
Roger T Engeli, Maria Tsachaki, Heba A Hassan, Christoph P Sager, Mona L Essawi, Yehia Z Gad, Alaa K Kamel, Inas Mazen, Alex Odermatt
BACKGROUND: Mutations in the HSD17B3 gene are associated with a 46,XY disorder of sexual development (46,XY DSD) as a result of low testosterone production during embryogenesis. AIM: To elucidate the molecular basis of the disorder by chemically analyzing four missense mutations in HSD17B3 (T54A, M164T, L194P, G289S) from Egyptian patients with 46,XY DSD. METHODS: Expression plasmids for wild-type 17β-hydroxysteroid hydrogenase type 3 (17β-HSD3) and mutant enzymes generated by site-directed mutagenesis were transiently transfected into human HEK-293 cells...
September 2017: Journal of Sexual Medicine
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