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Testosterone replacement

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https://www.readbyqxmd.com/read/27914563/differential-effects-of-testosterone-and-estradiol-on-clitoral-function-an-experimental-study-in-rats
#1
Paolo Comeglio, Ilaria Cellai, Sandra Filippi, Chiara Corno, Francesca Corcetto, Annamaria Morelli, Elena Maneschi, Elisa Maseroli, Edoardo Mannucci, Massimiliano Fambrini, Mario Maggi, Linda Vignozzi
INTRODUCTION: Female sexual response is a complex phenomenon in which psychological, neurologic, and vascular mechanisms and hormonal factors interact. During the arousal phase, they cooperate to increase genital blood flow, thus inducing engorgement of the clitoris and lubrication of the vagina. Regulation of vascular and non-vascular smooth muscle tone is the crucial event in the erectile process. Preclinical studies have suggested that nitric oxide (NO) is the main vasodilator neurotransmitter modulating, through the second messenger cyclic guanosine monophosphate (cGMP), clitoral flow vessels...
December 2016: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/27906030/cases-of-antiretroviral-associated-gynaecomastia-reported-to-the-national-hiv-tuberculosis-health-care-worker-hotline-in-south-africa
#2
Christine Njuguna, Annoesjka Swart, Marc Blockman, Gary Maartens, Briony Chisholm, Annemie Stewart, Anri Uys, Karen Cohen
BACKGROUND: Gynaecomastia is associated with exposure to antiretroviral therapy (ART), in particular efavirenz. There is limited data on clinical characteristics of patients with ART-associated gynaecomastia in resource-limited settings and little guidance on the optimal management of this adverse drug reaction (ADR). We describe the clinical characteristics, management and outcomes of gynaecomastia cases reported to the National HIV & Tuberculosis Health Care Worker Hotline in South Africa...
November 16, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27898110/associations-of-blood-lead-levels-with-reproductive-hormone-levels-in-men-and-postmenopausal-women-results-from-the-spect-china-study
#3
Chi Chen, Ningjian Wang, Hualing Zhai, Xiaomin Nie, Honglin Sun, Bing Han, Qin Li, Yi Chen, Jing Cheng, Fangzhen Xia, Li Zhao, Yanjun Zheng, Zhoujun Shen, Yingli Lu
We examined whether blood lead levels (BLLs) were associated with reproductive hormone levels in a cross-sectional study using data from the SPECT-China study. We selected 2286 men and 1571 postmenopausal women without hormone replacement therapy. BLLs, blood cadmium, total testosterone (TT), oestradiol (E2), luteinizing hormone (LH), follicle stimulating hormone (FSH) and sex hormone binding globulin(SHBG) levels were measured. The results showed that median values (interquartile range) of BLLs were 44.00 μg/L (29...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27891401/premature-ovarian-failure-an-association-with-autoimmune-diseases
#4
Ayesha, Vandana Jha, Deepti Goswami
INTRODUCTION: Premature Ovarian Failure (POF) is the cessation of ovarian function before the age of 40 years. POF is reported to be associated with autoimmune diseases in 20-30% of cases. AIM: Patients presenting with idiopathic POF were screened for the presence of autoimmune disorders. MATERIALS AND METHODS: Twenty patients with idiopathic POF were included in the study. Baseline investigation in all subjects included fasting serum FSH, LH, E2, progesterone, free T3, free T4, Thyroid-Stimulating Hormone (TSH) and Anti-Thyroperoxidase (anti-TPO) antibodies, testosterone and Dehydroepiandrosterone (DHEAS) levels...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27891161/cases-of-antiretroviral-associated-gynaecomastia-reported-to-the-national-hiv-tuberculosis-health-care-worker-hotline-in-south-africa
#5
Christine Njuguna, Annoesjka Swart, Marc Blockman, Gary Maartens, Briony Chisholm, Annemie Stewart, Anri Uys, Karen Cohen
BACKGROUND: Gynaecomastia is associated with exposure to antiretroviral therapy (ART), in particular efavirenz. There is limited data on clinical characteristics of patients with ART-associated gynaecomastia in resource-limited settings and little guidance on the optimal management of this adverse drug reaction (ADR). We describe the clinical characteristics, management and outcomes of gynaecomastia cases reported to the National HIV & Tuberculosis Health Care Worker Hotline in South Africa...
2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27888135/antihypertensive-effects-of-androgens-in-conscious-spontaneously-hypertensive-rats
#6
Mercedes Perusquía, Nieves Herrera, Mercedes Ferrer, John N Stallone
Androgens are vasoactive steroids that induce acute vasodilation in a number of isolated vascular beds from different species, but the effects of these hormones on systemic blood pressure (BP) have been studied little. Although it has been reported that androgens exert systemic hypotensive effects through peripheral vasodilation in normotensive rats, there have not been any reports of systemic hypotensive effects of androgens in animals with hypertension. This study was designed to evaluate the acute effects of testosterone (TES) and its 5-reduced metabolites on systemic BP in hypertensive rats and to test the hypothesis that hypotestosteronemia may be involved in the pathogenesis of hypertension...
November 23, 2016: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/27866050/boucher-neuh%C3%A3-user-syndrome-a-rare-cause-of-inherited-hypogonadotropic-hypogonadism-a-case-of-two-adult-siblings-with-two-novel-mutations-in-pnpla6
#7
Jakob H Langdahl, Anja L Frederiksen, Nina Nguyen, Klaus Brusgaard, Claus B Juhl
Boucher Neuhäuser Syndrome (BNS) is a rare clinical syndrome with autosomal recessive inheritance defined by early-onset ataxia, hypogonadism and chorioretinal dystrophy. We present two siblings diagnosed with BNS in late adult life identified with compound heterozygous state of two novel PNPLA6 mutations. Five healthy siblings were non- or heterozygous carriers of the mutations. The cases, which presented with ataxia in childhood and hypogonadotropic hypogonadism (HH), were diagnosed at age 17 and 25, respectively, when examined for delayed puberty...
November 16, 2016: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/27852981/no-effect-of-testosterone-on-behavior-in-aged-wistar-rats
#8
Veronika Borbélyová, Emese Domonkos, Janka Bábíčková, Ľubomíra Tóthová, Martin Bosý, Július Hodosy, Peter Celec
In men, aging is accompanied by a gradual decline in androgen secretion. Studies suggest beneficial effects of endogenous and exogenous testosterone on affective behavior and cognitive functions. The aim of this study was to describe behavioral and cognitive sex differences and to analyze the effects of long-term androgen deficiency in aged male rats. Thirty-months old rats divided into three groups (males, females and males gonadectomized as young adults) underwent a battery of behavioral tests assessing locomotor activity, anxiety, memory, anhedonia, sociability and depression-like behavior...
November 12, 2016: Aging
https://www.readbyqxmd.com/read/27849376/clomiphene-citrate-in-the-treatment-of-idiopathic-or-functional-hypogonadotropic-hypogonadism-in-men-a-case-series-and-review-of-the-literature
#9
Yair Liel
OBJECTIVE: Late onset hypogonadotropic hypogonadism (LOH) is a complex, heterogeneous entity. Whenever treatment is indicated, the endocrine literature has recommend testosterone replacement. We present our experience with clomiphene citrate (CC) treatment in patients with LOH and a review of the literature. DESIGN: A retrospective case series. PATIENTS AND MEASUREMENTS: Eighteen male patients with hypogonadotropic hypogonadism, roughly according to the EMAS criteria for LOH, attended at an academic hospital outpatient clinic...
November 16, 2016: Endocrine Practice
https://www.readbyqxmd.com/read/27845130/re-association-between-testosterone-replacement-therapy-and-the-incidence-of-deep-vein-thrombosis-and-pulmonary-embolism-a%C3%A2-retrospective-cohort-study-of-the-veterans-administration-database
#10
https://www.readbyqxmd.com/read/27845125/re-testosterone-replacement-therapy-on-the-natural-history-of-prostate-disease
#11
Steven A Kaplan
No abstract text is available yet for this article.
December 2016: Journal of Urology
https://www.readbyqxmd.com/read/27844470/transient-low-testosterone-levels-after-oral-hydrocodone-may-contribute-to-misdiagnosis-of-hypogonadism
#12
Harry W Daniell
CONTEXT: Multiple morning testosterone levels are needed to establish the presence of male hypogonadism and to justify its replacement therapy. Any influence on these levels by short-term opioid ingestion has not, however, been reported. CASE DESCRIPTION: Serial testosterone levels are reported at 2-hour intervals once weekly for 22 weeks in a man after his ingestion of 0, 5, or 10 mg of hydrocodone. CONCLUSIONS: Five milligrams of hydrocodone did not significantly alter postingestion testosterone levels, but 10 mg ingestion lowered them at 2, 4, and 6 hours postingestion...
September 2016: Journal of Opioid Management
https://www.readbyqxmd.com/read/27831823/aging-and-sex-hormones-in-males
#13
Maria Chiara Decaroli, Vincenzo Rochira
Several large cohort studies have disclosed the trajectories of sex steroids changes overtime in men and their clinical significance. In men the slow, physiological decline of serum testosterone (T) with advancing age overlaps with the clinical condition of overt, pathological hypogonadism. In addition, the increasing number of comorbidities, together with the high prevalence of chronic diseases, all further contribute to the decrease of serum T concentrations in the aging male. For all these reasons both the diagnosis of late-onset hypogonadism (LOH) in men and the decision about starting or not T replacement treatment remain challenging...
November 10, 2016: Virulence
https://www.readbyqxmd.com/read/27818256/eurycoma-longifolia-as-a-potential-alternative-to-testosterone-for-the-treatment-of-osteoporosis-exploring-time-mannered-proliferative-differentiative-and-morphogenic-modulation-in-osteoblasts
#14
Hnin Ei Thu, Isa Naina Mohamed, Zahid Hussain, Ahmad Nazrun Shuid
ETHNOPHARMACOLOGICAL RELEVANCE: Eurycoma longifolia (EL) has been well-studied traditionally as a chief ingredient of many polyherbal formulations for the management of male osteoporosis. It has also been well-recognised to protect against bone calcium loss in orchidectomised rats. AIM OF THE STUDY: To evaluate the effects of EL on the time-mannered sequential proliferative, differentiative, and morphogenic modulation in osteoblasts compared with testosterone. MATERIALS AND METHODS: Cell proliferation was analysed using MTS assay and phase contrast microscopy...
November 3, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27807794/low-testosterone-in-men-with-cardiovascular-disease-or-risk-factors-to-treat-or-not-to-treat
#15
REVIEW
Dimitri C Cassimatis, Matthew T Crim, Nanette K Wenger
Current evidence supports the use of testosterone replacement in men with the clinical-biochemical syndrome of hypogonadism, defined as low testosterone serum levels and symptoms such as fatigue, exercise intolerance, erectile dysfunction, low libido, or depression. Although the evidence consistently shows that hypogonadism is associated with elevated cardiovascular risk, evidence is mixed regarding whether testosterone (T) replacement provides cardiovascular (CV) benefit or harm. For a man with symptomatic hypogonadism in the setting of CV disease, clinical heart failure, and/or traditional CV risk factors (hypertension, diabetes, and hyperlipidemia), a balanced approach would be to counsel him that overall, the evidence should not dissuade him from utilizing T replacement for non-cardiac symptom relief but that more data are needed before a definitive recommendation can be made about T replacement for CV benefit...
December 2016: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/27803500/issues-surrounding-testosterone-replacement-therapy
#16
Carson Schlich, Frank Romanelli
Testosterone is derived from Leydig cells and exerts its effects on androgen receptors to influence growth, mood, voice, and several other bodily functions. As men age, their testosterone levels decline. Human immunodeficiency virus (HIV) infection has also been associated with lowered serum testosterone levels. Subtherapeutic levels of testosterone may lead to fatigue, loss of libido, and dysphoria. Exogenous replacement of testosterone can be accomplished by several modalities (oral, topical, injection), with each having distinct advantages and disadvantages...
October 2016: Hospital Pharmacy
https://www.readbyqxmd.com/read/27800162/gonadal-response-after-a-single-dose-stimulation-test-with-recombinant-human-chorionic-gonadotropin-rhcg-in-patients-with-isolated-prepubertal-cryptorchidism
#17
Leticia Ribeiro Oliveira, Thais Kataoka Homma, Renata Reis Woloszynek, Vinícius Nahime Brito, Carlos Alberto Longui
BACKGROUND: The evaluation of prepubertal gonadal Leydig cells secretion requires gonadotropin stimulation. Urinary hCG (human chorionic gonadotropin) is currently unavailable in many countries, however, recombinant hCG (rhCG) can be used. Our aim was to evaluate rhCG-stimulated testicular hormones in a group of patients with cryptorchidism. METHODS: We evaluated 31 prepubertal boys (age range, 0.75-9.0 years) presenting with unilateral (n = 24) or bilateral (n = 7) cryptorchidism...
2016: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/27797640/hypotestosterone-and-long-term-opioid-use
#18
Michael A Lankhorst
Questions from patients about pain conditions and analgesic pharmacotherapy and responses from authors are presented to help educate patients and make them more effective self-advocates. The effects of long-term opioid use on testosterone production, associated comorbidities, and medication-based and natural testosterone replacement therapies are considered.
October 31, 2016: Journal of Pain & Palliative Care Pharmacotherapy
https://www.readbyqxmd.com/read/27794450/3d-engineered-in-vitro-hepatospheroids-for-studying-drug-toxicity-and-metabolism
#19
Swati Chitrangi, Prabha Nair, Aparna Khanna
Drug toxicity is one of the reasons for late stage drug attrition, because of hepatotoxicity. Various in vitro liver models like primary human hepatocytes, immortalized human hepatic cell lines, liver slices and microsomes have been used; but limited by viability, hepatic gene expression and function. The 3D-engineered construct of hepatocyte-like-cells (HLCs) differentiated from stem cells, may provide a limitless source of hepatocytes with improved reproducibility. Towards this end, we used hepatospheroids (diameter=50-80μm) differentiated from human-umbilical-cord-mesenchymal stem cells (hUC-MSCs) on 3D scaffold GEVAC (Gelatin-vinyl-acetate-copolymer) as in vitro model for studying drug metabolism/toxicity...
October 26, 2016: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/27792869/testosterone-vs-aromatase-inhibitor-in-older-men-with-low-testosterone-effects-on-cardiometabolic-parameters
#20
J P Dias, M D Shardell, O D Carlson, D Melvin, G Caturegli, L Ferrucci, C W Chia, J M Egan, S Basaria
Testosterone (T) replacement is being increasingly offered to older men with age-related decline in testosterone levels. The effects of long-term testosterone replacement and aromatase inhibition (AI) on glucose homeostasis and cardiometabolic markers were determine in older non-diabetic men with low testosterone levels. Men ≥65 years, mean age 71 ± 3 years with serum total T < 350 ng/dL were randomized in a double-blind, placebo-controlled, parallel-group, proof-of-concept trial evaluating the effects of 5 g transdermal testosterone gel (TT) (n = 10), 1 mg anastrozole (n = 10) or placebo (n = 9) daily for 12 months...
October 28, 2016: Andrology
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