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Testosterone replacement therapy

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https://www.readbyqxmd.com/read/29216720/testosterone-replacement-therapy-trt-and-its-effect-on-bone-marrow-how-serious-is-it-and-is-there-a-true-polyglobulia
#1
M Levcikova, J Breza, J Luha, J Dubravicky, E Kovacova, J Fillo
INTRODUCTION: TRT in men with testosterone deficiency syndrome (TDS) had multiple positive effects and restore a quality of life of affected men. Polyglobulia is the most common dose-limiting adverse effect of TRT, but the mechanisms of TRT-mediated erythropoesis remain unclear. In this study, we evaluated long term haematological side effects of TRT: polyglobulia, elevated hemoglobin (Hb) and haematocrit (Ht). METHODS: In a cross-sectional descriptive study, the authors treated 69 men with TDS and the average age 59 years and the follow-up period 81...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/29205178/association-of-subcutaneous-testosterone-pellet-therapy-with-developing-secondary-polycythemia
#2
Katherine Lang Rotker, Michael Alavian, Bethany Nelson, Grayson L Baird, Martin M Miner, Mark Sigman, Kathleen Hwang
A variety of methods for testosterone replacement therapy (TRT) exist, and the major potential risks of TRT have been well established. The risk of developing polycythemia secondary to exogenous testosterone (T) has been reported to range from 0.4% to 40%. Implantable T pellets have been used since 1972, and secondary polycythemia has been reported to be as low as 0.4% with this administration modality. However, our experience has suggested a higher rate. We conducted an institutional review board-approved, single-institution, retrospective chart review (2009-2013) to determine the rate of secondary polycythemia in 228 men treated with subcutaneously implanted testosterone pellets...
December 5, 2017: Asian Journal of Andrology
https://www.readbyqxmd.com/read/29204279/sellar-plasmacytoma-presenting-with-symptoms-of-anterior-pituitary-dysfunction
#3
Ana G Ferreira, Tiago N Silva, Henrique V Luiz, Filipa D Campos, Maria C Cordeiro, Jorge R Portugal
Sellar plasmacytomas are rare and the differential diagnosis with non-functioning pituitary adenomas might be difficult because of clinical and radiological resemblance. They usually present with neurological signs and intact anterior pituitary function. Some may already have or eventually progress to multiple myeloma. We describe a case associated with extensive anterior pituitary involvement, which is a rare form of presentation. A 68-year-old man was referred to our Endocrinology outpatient clinic due to gynecomastia, reduced libido and sexual impotence...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29198509/testosterone-deficiency-causes-endothelial-dysfunction-via-elevation-of-asymmetric-dimethylarginine-and-oxidative-stress-in-castrated-rats
#4
Tomoya Kataoka, Yuji Hotta, Yasuhiro Maeda, Kazunori Kimura
BACKGROUND: Testosterone is believed to mediate the penile erectile response by producing adequate nitric oxide; therefore, testosterone deficiency results in erectile dysfunction through decreased nitric oxide bioavailability. However, the mechanisms underlying endothelial dysfunction in testosterone deficiency remain unclear. AIM: To investigate the mechanism of endothelial dysfunction in a rat model of testosterone deficiency. METHODS: Rats were distributed into 3 groups: castrated (Cast), castrated and supplemented with testosterone (Cast + T), and sham (Sham)...
December 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29198507/british-society-for-sexual-medicine-guidelines-on-adult-testosterone-deficiency-with-statements-for-uk-practice
#5
REVIEW
Geoff Hackett, Michael Kirby, David Edwards, Thomas Hugh Jones, Kevan Wylie, Nick Ossei-Gerning, Janine David, Asif Muneer
BACKGROUND: Testosterone deficiency (TD) is an increasingly common problem with significant health implications, but its diagnosis and management can be challenging. AIM: To review the available literature on TD and provide evidence-based statements for UK clinical practice. METHODS: Evidence was derived from Medline, EMBASE, and Cochrane searches on hypogonadism, testosterone (T) therapy, and cardiovascular safety from May 2005 to May 2015...
December 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29194818/rapid-non-genomic-modulation-by-neurosteroids-of-dendritic-spines-in-the-hippocampus-androgen-estrogen-and-corticosteroid
#6
REVIEW
Gen Murakami, Yasushi Hojo, Asami Kato, Yoshimasa Komatsuzaki, Shigeo Horie, Mika Soma, Jonghyuk Kim, Suguru Kawato
Memories are stored in synapses which consist of axon terminals and dendritic spines. Dendritic spines are postsynaptic structures of synapses and essential for synaptic plasticity and cognition. Therefore, extensive investigations about functions and structures of spines have been performed. Sex steroids and stress steroids have been shown to modulate hippocampal synapses. Although rapid modulatory action of sex steroids on synapses has been studied in hippocampal neurons over several decades, its essential molecular mechanisms have not been fully understood...
December 1, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/29174957/alternatives-to-testosterone-therapy-a-review
#7
REVIEW
Eric M Lo, Katherine M Rodriguez, Alexander W Pastuszak, Mohit Khera
INTRODUCTION: Although testosterone therapy (TTh) is an effective treatment for hypogonadism, recent concerns regarding its safety have been raised. In 2015, the US Food and Drug Administration issued a warning about potential cardiovascular risks resulting from TTh. Fertility preservation is another reason to search for viable alternative therapies to conventional TTh, and in this review we evaluate the literature examining these alternatives. AIMS: To review the role and limitations of non-testosterone treatments for hypogonadism...
November 23, 2017: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/29174614/marketing-and-testosterone-treatment-in-the-usa-a-systematic-review
#8
REVIEW
Jathin Bandari, Omar M Ayyash, Sherry L Emery, Charles B Wessel, Benjamin J Davies
CONTEXT: Testosterone replacement therapy (TRT) is currently approved by the Food and Drug Administration only for classic hypogonadism, although off-label indications have resulted in a dramatic expansion in prescriptions in the USA. Marketing may significantly affect prescriber behavior. OBJECTIVE: To systematically review all available evidence on marketing and TRT in the USA. EVIDENCE ACQUISITION: PubMed, Embase, and Scopus were searched up to July 2017 for all relevant publications reporting on assessments of the TRT market size, economic costs associated with hypogonadism, trends in TRT prescriptions, drug discontinuation rates, and advertising and sales efforts in the USA...
November 22, 2017: European Urology Focus
https://www.readbyqxmd.com/read/29158902/hypernatraemic-hypovolaemia-with-anaemia-an-unusual-presentation-of-primary-testicular-insufficiency
#9
Usman Javaid, Vikram Lal, Catherine Napier, Alison Burbridge, Richard Quinton
Hypogonadal men may experience intense vasomotor symptoms, and vasomotor sweating can occasionally be associated with profound fluid losses. We describe a 37-year-old male, who exhibited persistent hypovolaemic hypernatraemia that was challenging to treat despite a continuous high fluid input (>4-5 L/day). He was noted to have drenching sweats and normochromic anaemia. He had recent traumatic head injury, which resulted in neurocognitive dysfunction, so pituitary function tests were done which showed primary hypogonadism...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29150464/testosterone-therapy-in-hypogonadal-men-a-systematic-review-and-network-meta-analysis
#10
Jesse Elliott, Shannon E Kelly, Adam C Millar, Joan Peterson, Li Chen, Amy Johnston, Ahmed Kotb, Becky Skidmore, Zemin Bai, Muhammad Mamdani, George A Wells
OBJECTIVE: To assess the relative effects of individual testosterone products among hypogonadal men. DESIGN: Systematic review and network meta-analysis. METHODS: We searched MEDLINE, Embase, Cochrane CENTRAL, and grey literature (25 May 2017) for randomised-controlled trials (RCTs) and non-randomised studies (NRS) that involved hypogonadal men given testosterone replacement therapy (TRT) for ≥3 months. Comparators were placebo, another TRT, or the same product at a different dose...
November 16, 2017: BMJ Open
https://www.readbyqxmd.com/read/29150164/testosterone-replacement-therapy-and-the-risk-of-stroke-in-men-a-systematic-review
#11
REVIEW
Simone Y Loo, Bing Yu Chen, Oriana Hoi Yun Yu, Laurent Azoulay, Christel Renoux
In recent years, questions have been raised regarding the cardiovascular safety of testosterone replacement therapy (TRT). The objective of this study was to systematically review the available evidence on TRT safety in men, specifically with respect to the risk of stroke. We identified publications from MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials up to May 2017. Articles eligible for review included observational studies evaluating TRT and the risk of stroke among men aged 18 or older...
December 2017: Maturitas
https://www.readbyqxmd.com/read/29149458/hormone-therapy-and-patients-satisfaction-with-treatment-in-a-large-cohort-of-diverse-disorders-of-sex-development-dsd
#12
Anna Nordenström, Robert Röhle, Ute Thyen, Claire Bouvattier, Jolanta Slowikowska-Hilczer, Nicole Reisch, Hedi Claahsen van der Grinten, Aude Brac de la Perriere, Peggy T Cohen-Kettenis, Birgit Köhler
OBJECTIVES: To describe and investigate the hormone treatments in individuals with different forms of disorders of sex development (DSD), and the patients own views on their treatment. DESIGN: Multicentre cross-sectional clinical evaluation, dsd-LIFE in six European countries from 02/2014 to 09/2015. PARTICIPANTS: 1040 adolescents and adults (≥16 years) with different DSD conditions. MAIN OUTCOMES MEASURES: Hormone replacement, information received and patient satisfaction...
November 17, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/29145707/relationship-between-testosterone-in-serum-saliva-and-urine-during-treatment-with-intramuscular-testosterone-undecanoate-in-gender-dysphoria-and-male-hypogonadism
#13
Y Lood, E Aardal-Eriksson, C Webe, J Ahlner, B Ekman, J Wahlberg
Long-term testosterone replacement therapy is mainly monitored by trough levels of serum testosterone (S-T), while urinary testosterone (U-T) is used by forensic toxicology to evaluate testosterone doping. Testosterone in saliva (Sal-T) may provide additional information and simplify the sample collection. We aimed to investigate the relationships between testosterone measured in saliva, serum and urine during standard treatment with 1,000 mg testosterone undecanoate (TU) every 12th week during 1 year. This was an observational study...
November 16, 2017: Andrology
https://www.readbyqxmd.com/read/29144993/evaluate-the-effects-of-antiepileptic-drugs-on-reproductive-endocrine-system-in-newly-diagnosed-female-epileptic-patients-receiving-either-valproate-or-lamotrigine-monotherapy-a-prospective-study
#14
Harpreet Singh Sidhu, R Srinivasa, Akshay Sadhotra
OBJECTIVE: To investigate the development of reproductive endocrine changes in Indian women with epilepsy initiating on either Valproate (VPA) or Lamotrigine (LTG) monotherapy. METHODS: Reproductive hormonal profiles, hirsutism, ovarian morphology by ultrasonography and menstrual cycle data in newly diagnosed women with epilepsy taking VPA (n=34) or LTG (n=32) monotherapy were compared. None of the women were receiving hormonal contraception. Patients gave details of seizure type and frequency, medical and drug history...
October 28, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29141657/local-estrogen-axis-in-the-human-bone-microenvironment-regulates-estrogen%C3%A2-receptor-positive%C3%A2-breast-cancer-cells
#15
Derek F Amanatullah, John S Tamaresis, Pauline Chu, Michael H Bachmann, Nhat M Hoang, Deborah Collyar, Aaron T Mayer, Robert B West, William J Maloney, Christopher H Contag, Bonnie L King
BACKGROUND: Approximately 70% of all breast cancers express the estrogen receptor, and are regulated by estrogen. While the ovaries are the primary source of estrogen in premenopausal women, most breast cancer is diagnosed following menopause, when systemic levels of this hormone decline. Estrogen production from androgen precursors is catalyzed by the aromatase enzyme. Although aromatase expression and local estrogen production in breast adipose tissue have been implicated in the development of primary breast cancer, the source of estrogen involved in the regulation of estrogen receptor-positive (ER+) metastatic breast cancer progression is less clear...
November 15, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/29118987/massive-adrenal-incidentalomas-and-late-diagnosis-of-congenital-adrenal-hyperplasia-in-prostate-cancer
#16
Xin Feng, Gregory Kline
In a 61-year-old Caucasian male with prostate cancer, leuprolide and bicalutamide failed to suppress the androgens. He presented to endocrinology with persistently normal testosterone and incidental massive (up to 18 cm) bilateral adrenal myelolipomas on CT scan. Blood test did not reveal metanephrine excess. The patient was noted to have short stature (151 cm) and primary infertility. Elementary school photographs demonstrated precocious puberty. Physical examination revealed palpable abdominal (adrenal) masses...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29115626/influence-of-androgen-on-myocardial-apoptosis-and-expression-of-myocardial-ir-and-irs%C3%A2-1-in-chronic-heart-failure-rat-models
#17
Yu Wang, Yang Hu, Zhaoping Zeng, Yinghua Li, Huipeng Su, Yiwei Li, Ruiping Wang, Mingqian Zhang, Yongli Yang, Jie Deng
The present study aimed to investigate the effect of androgens on chronic heart failure (CHF) in a rat model. A total of 120 Sprague Dawley male rats were randomly divided into the following groups: (A) sham operation group, (B) castrated group, (C) heart failure (HF) group, (D) castrated + HF group, and (E) castrated + HF + testosterone (T) replacement therapy group. There were 20 rats in group A, and 25 rats in the other groups. Surgical castration was performed on groups B, D and E, and T replacement therapy was administered to group E...
November 8, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29112589/androgens-mediate-%C3%AE-adrenergic-vasorelaxation-impairment-via-adenylyl-cyclase
#18
O A López-Canales, M C Castillo-Hernández, H Vargas-Robles, A Rios, J S López-Canales, B Escalante
Cardiovascular disease development has been associated with gender differences, suggesting that sex hormones are implicated in vascular function and development of hypertension. Vascular tone comparison at different stages of rat growth represents a good model to study testosterone-related vascular response. We explored the role of testosterone in modulation of age-dependent impaired β-adrenergic vasodilation.The 3 week-old male Sprague-Dawley rats were sorted in 3 week-old rats without any manipulation and 3 week-old rats treated with testosterone...
October 31, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/29105668/-testosterone-replacement-therapy-and-cardiovascular-risk
#19
Giovanni Corona, Mauro Dicuio, Giulia Rastrelli, Alessandra Sforza, Mario Maggi
Late onset hypogonadism (LOH) is the most commonly used term to indicate the age-dependent reduction of testosterone. Sexual dysfunction represents the most important determinant for medical consultation and the most specific symptoms associated with LOH. In particular, data from the European Male Ageing Study (EMAS), a population-based survey on more than 3400 subjects, recognized that a triad of sexual symptoms (low libido and reduced spontaneous and sex-related erections) is the only syndromic association with decreased testosterone levels...
November 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/29095270/pituitary-insufficiency-following-traumatic-thoracic-injury-in-an-adolescent-male-patient-a-case-report-and-literature-review
#20
REVIEW
Aleksandra Gilis-Januszewska, Łukasz Kluczyński, Małgorzata Wilusz, Jacek Pantofliński, Renata Turek-Jabrocka, Dorota Pach, Alicja Hubalewska-Dydejczyk
RATIONALE: Traumatic thoracic injuries in adolescents are rare but could be connected with traumatic brain injuries (TBI) and development of chronic hypopituitarism. Early recognition of these endocrine problems is a significant challenge to clinicians. We present difficulties in diagnosis of hypothalamic-pituitary insufficiency following traumatic thoracic injury in adolescence. We also review the literature of similar cases. PATIENT CONCERNS: We present a case of a 24-years-old male...
November 2017: Medicine (Baltimore)
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