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Testosterone deficiency

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https://www.readbyqxmd.com/read/29452853/the-impact-of-sex-steroid-agonists-and-antagonists-on-folliculogenesis-in-the-neonatal-porcine-ovary-via-cell-proliferation-and-apoptosis
#1
Katarzyna Knapczyk-Stwora, Malgorzata Grzesiak, Renata E Ciereszko, Elzbieta Czaja, Marek Koziorowski, Maria Slomczynska
The objective of the study was to examine the effects of androgen and estrogen agonists or antagonists on the follicle formation, ovarian cell proliferation and apoptosis as well as plasma steroid concentration in neonatal pigs. Piglets were injected with testosterone propionate (TP, 20 mg/kg bw), flutamide (FLU, 50 mg/kg bw), 4-tert-octylphenol (OP, 100 mg/kg bw), ICI 182,780 (ICI, 400 μg/kg bw), methoxychlor (MXC, 100 mg/kg bw) or corn oil (CTR, controls) between postnatal Days 1 and 10 (n = 4/group). Heart blood was collected and ovaries were excised from the 11-day-old piglets...
February 10, 2018: Theriogenology
https://www.readbyqxmd.com/read/29449314/vitamin-d-pcos-and-androgens-in-men-a-systematic-review
#2
Christian Trummer, Stefan Pilz, Verena Schwetz, Barbara R Obermayer-Pietsch, Elisabeth Lerchbaum
BACKGROUND: Accumulating evidence from animal and human studies suggests that vitamin D is involved in many functions of the reproductive system in both genders. AIM: The aim of this review was to provide an overview on the effects of vitamin D on polycystic ovary syndrome (PCOS) in women and androgen metabolism in men. METHODS: We performed a systematic literature search in Pubmed for relevant English language publications published from January 2012 until July 2017...
February 15, 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29423003/direct-conversion-of-human-fibroblasts-into-functional-leydig-like-cells-by-sf-1-gata4-and-ngfi-b
#3
Yan-Ping Hou, Zhi-Yuan Zhang, Xiao-Yu Xing, Jin Zhou, Jie Sun
The reprogramming of fibroblasts to induced pluripotent stem cells raises the possibility that a somatic cell can be reprogrammed to an alternative, differentiated fate without first becoming a stem/progenitor cell. Recent work has shown that fibroblasts can be reprogrammed to other, terminally differentiated cells with a combination of several transcription factors. Here, we report that a combination of four developmental transcription factors; GATA4, SF-1, NGFI-B, and COUP TF2; efficiently reprogrammed human foreskin fibroblasts into functional induced Leydig-like cells (iLCs)...
2018: American Journal of Translational Research
https://www.readbyqxmd.com/read/29420188/human-3beta-hydroxysteroid-dehydrogenase-deficiency-associated-with-normal-spermatic-numeration-despite-a-severe-enzyme-deficit
#4
Bruno Donadille, Muriel Houang, Irene Netchine, Jean-Pierre Siffroi, Sophie Christin-Maitre
Human 3 beta-hydroxysteroid dehydrogenase deficiency (3b-HSD) is a very rare form of congenital adrenal hyperplasia resulting from HSD3B2 gene mutations. Its estimated prevalence is less than 1/1,000,000 male neonates. It leads to steroidogenesis impairment in both adrenals and gonads. Few data are available on adult testicular function in such patients. Therefore, we evaluated gonadal axis and testicular function in a 46,XY adult patient, carrying a HSD3B2 mutation. The patient presented at birth with neonatal salt wasting syndrome, a micropenis, perineal hypospadias and intrascrotal testes...
February 2, 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29419855/-clinical-report-of-testicular-hypoplasia-combined-with-21-hydroxylase-deficiency
#5
Bo Jiang, Dingyuan Ma, Huanhuan Chen, Xiaoyu Yang, Yugui Cui, Zhengfeng Xu, Jiayin Liu
OBJECTIVE To investigate the correlation of 21-hydroxylase deficiency (21-OHD) with male testicular dysplasia. METHODS Clinical data of 8 infertile males with congenital adrenal hyperplasia due to 21-OHD was retrospectively analyzed. In addition, potential mutations of the CYP21A2 gene was detected. RESULTS All patients were referred because of azoospermia or severe oligospermia and had small testis with averaged testicular volume of 6.1 mL. Three patients had testicular adrenal rest tumors. Endocrinologic examinations revealed low levels of leutinizing hormone and follicular stimulating hormone, normal or elevated testosterone, elevated progesterone, elevated or normal adrenocoticotropic hormone, and low or normal cortisol...
February 10, 2018: Zhonghua Yi Xue Yi Chuan Xue za Zhi, Zhonghua Yixue Yichuanxue Zazhi, Chinese Journal of Medical Genetics
https://www.readbyqxmd.com/read/29417486/the-change-in-the-percent-of-android-and-gynoid-fat-mass-correlated-with-increased-testosterone-after-laparoscopic-sleeve-gastrectomy-in-chinese-obese-men-a-6-month-follow-up
#6
Jingyang Gao, Manna Zhang, Cuiling Zhu, Yi Zhang, Qi Liu, Xingchun Wang, Liang Li, Donglei Zhou, Shen Qu
OBJECTIVE: The study was designed to examine changes of body fat distribution after laparoscopic sleeve gastrectomy (LSG) in obese male patients and to confirm whether these changes are correlated with increased testosterone. METHODS: A total of 30 obese male patients with body mass index (BMI) 30-45 kg/m2 were enrolled in this study. Data on demographic characteristics, anthropometry, metabolic parameters, and body fat distribution were collected at baseline and 6 months after LSG...
February 7, 2018: Obesity Surgery
https://www.readbyqxmd.com/read/29412390/growth-hormone-deficiency-with-advanced-bone-age-phenotypic-interaction-between-ghrh-receptor-and-cyp21a2-mutations-diagnosed-by-sanger-and-whole-exome-sequencing
#7
Fernanda A Correa, Marcela M França, Qing Fang, Qianyi Ma, Tania A Bachega, Andresa Rodrigues, Bilge A Ozel, Jun Z Li, Berenice B Mendonca, Alexander A L Jorge, Luciani R Carvalho, Sally A Camper, Ivo J P Arnhold
Isolated growth hormone deficiency (IGHD) is the most common pituitary hormone deficiency and, clinically, patients have delayed bone age. High sequence similarity between CYP21A2 gene and CYP21A1P pseudogene poses difficulties for exome sequencing interpretation. A 7.5 year-old boy born to second-degree cousins presented with severe short stature (height SDS -3.7) and bone age of 6 years. Clonidine and combined pituitary stimulation tests revealed GH deficiency. Pituitary MRI was normal. The patient was successfully treated with rGH...
December 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29411194/sarcopenia
#8
REVIEW
Karsten Keller
Sarcopenia is a very common, but frequently overlooked and undertreated geriatric syndrome comprising pronounced muscle mass and strength/performance loss. Estimated prevalence is between 5 and 40% in the general population, accompanied by an exponential incline with increasing age. Sarcopenia is connected to atrophy and loss of muscle fibers and motor units, affecting primarily the fast-twitch muscle fibers und their motor units. Fast-twitch muscle fibers seem to be more prone to failure of function and loss over time...
February 6, 2018: Wiener Medizinische Wochenschrift
https://www.readbyqxmd.com/read/29408903/vitamin-d-deficiency-causes-inward-hypertrophic-remodeling-and-alters-vascular-reactivity-of-rat-cerebral-arterioles
#9
Éva Pál, Leila Hadjadj, Zoltán Fontányi, Anna Monori-Kiss, Zsuzsanna Mezei, Norbert Lippai, Attila Magyar, Andrea Heinzlmann, Gellért Karvaly, Emil Monos, György Nádasy, Zoltán Benyó, Szabolcs Várbíró
BACKGROUND AND PURPOSE: Vitamin D deficiency (VDD) is a global health problem, which can lead to several pathophysiological consequences including cardiovascular diseases. Its impact on the cerebrovascular system is not well understood. The goal of the present work was to examine the effects of VDD on the morphological, biomechanical and functional properties of cerebral arterioles. METHODS: Four-week-old male Wistar rats (n = 11 per group) were either fed with vitamin D deficient diet or received conventional rat chow with per os vitamin D supplementation...
2018: PloS One
https://www.readbyqxmd.com/read/29405793/within-day-energy-deficiency-and-metabolic-perturbation-in-male-endurance-athletes
#10
Monica K Torstveit, Ida Fahrenholtz, Thomas B Stenqvist, Øystein Sylta, Anna Melin
Endurance athletes are at increased risk of relative energy deficiency associated with metabolic perturbation and impaired health. We aimed to estimate and compare within-day energy balance (WDEB) in male athletes with suppressed and normal resting metabolic rate (RMR) and explore if within-day energy deficiency (WDED) is associated with endocrine markers of energy deficiency. Thirty-one male cyclists, triathletes, and long-distance runners recruited from regional competitive sports clubs were included. The protocol comprised measurements of RMR by ventilated hood, and energy intake and energy expenditure to predict RMRratio (measured RMR/predicted RMR), energy availability (EA), 24-hour energy balance (EB) and WDEB in 1-hour intervals, assessment of body-composition by dual-energy X-ray absorptiometry, and blood plasma analysis...
February 6, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29398092/prenatal-testosterone-and-theory-of-mind-development-findings-from-disorders-of-sex-development
#11
Behzad S Khorashad, Behnaz Khazai, Ghasem M Roshan, Mehran Hiradfar, Mozhgan Afkhamizadeh, Tim C van de Grift
Women on average perform better than men on the "Reading the Mind in the Eyes" test (RMET) which is a measure of Theory of Mind (ToM). The aim of this study was to assess whether these sex differences are influenced by differences in prenatal testosterone levels through a study on individuals with Disorders of Sex Development and matched controls. ToM performance was examined using the RMET in female-assigned-at-birth individuals with increased prenatal testosterone exposure (Congenital Adrenal Hyperplasia (CAH) and 5-alpha Reductase type-2 Deficiency (5α-RD-2)), female-assigned-at-birth individuals with testosterone insensitivity (Complete Androgen Insensitivity Syndrome (CAIS)), and their age-matched unaffected male and female relatives...
December 14, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29381240/erectile-dysfunction-and-testosterone-deficiency-as-cardiovascular-risk-factors
#12
Geoffrey Hackett, Michael Kirby
Graham Jackson introduced the concept that erectile dysfunction was a marker for undiagnosed cardiovascular disease and future events. Unfortunately this had had modest impact on CVD management as ED is not incorporated into current risk calculators. In this paper, we examine recent evidence as to whether ED should be upgraded to a risk factor, especially with the high predictive value in younger men. In the Princeton 3 guidelines, he recognised the important impact of testosterone deficiency (TD) on all-cause and cardiovascular mortality...
January 30, 2018: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/29373734/long-term-testosterone-administration-on-insulin-sensitivity-in-older-men-with-low-or-low-normal-testosterone-levels
#13
Grace Huang, Karol M Pencina, Zhuoying Li, Shehzad Basaria, Shalender Bhasin, Thomas G Travison, Thomas W Storer, S Mitchell Harman, Panayiotis Tsitouras
Background: Serum testosterone levels and insulin sensitivity both decrease with age. Severe testosterone deficiency is associated with the development of insulin resistance. However, the effects of long-term testosterone administration on insulin sensitivity in older men with low or low-normal testosterone levels remain unknown. Methods: The Testosterone Effects on Atherosclerosis in Aging Men Trial was a placebo-controlled, randomized, double-blind trial. The participants were 308 community-dwelling men, >60-years, with total testosterone 100-400ng/dL or free testosterone<50pg/mL...
January 24, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29371146/couplepause-a-new-paradigm-in-treating-sexual-dysfunction-during-menopause-and-andropause
#14
REVIEW
Emmanuele A Jannini, Rossella E Nappi
BACKGROUND: At midlife and beyond, both men and women face organic changes that can affect sexual functioning. For women, ovarian exhaustion causes estrogen deficiency, leading to genitourinary syndrome of menopause, which may include vaginal dryness, irritation/itching, inadequate lubrication, and dyspareunia. Hypoactive sexual desire disorder also can result from biopsychosocial factors. For men, erectile dysfunction prevalence increases with age, and some men develop testosterone deficiency...
January 19, 2018: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/29367875/myotonic-dystrophy-type-1-with-diabetes-mellitus-mixed-hypogonadism-and-adrenal-insufficiency
#15
Ken Takeshima, Hiroyuki Ariyasu, Tatsuya Ishibashi, Shintaro Kawai, Shinsuke Uraki, Jinsoo Koh, Hidefumi Ito, Takashi Akamizu
Myotonic dystrophy type 1 (DM1) is an autosomal dominant multisystem disease affecting muscles, the eyes and the endocrine organs. Diabetes mellitus and primary hypogonadism are endocrine manifestations typically seen in patients with DM1. Abnormalities of hypothalamic-pituitary-adrenal (HPA) axis have also been reported in some DM1 patients. We present a case of DM1 with a rare combination of multiple endocrinopathies; diabetes mellitus, a combined form of primary and secondary hypogonadism, and dysfunction of the HPA axis...
2018: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/29360485/actions-for-men-s-health-development-of-a-clinically-relevant-men-s-health-phenotype-and-correlation-of-systemic-and-urologic-conditions
#16
Daniel A Shoskes, Sarah C Vij, Aaron Shoskes, Yaw Nyame, Tianming Gao
OBJECTIVE: To develop a clinically relevant men's health phenotype and investigate the correlation between severity of urologic symptoms and systemic health conditions METHODS: Retrospective chart review was performed for men seeking care for benign prostatic hypertrophy (BPH), erectile dysfunction (ED) or chronic prostatitis/chronic pelvic pain syndrome (CPPS). Urologic symptoms were assessed with the International Prostate Symptom Score, Sexual Health Inventory for Men and NIH Chronic Prostatitis Symptom Score...
January 19, 2018: Urology
https://www.readbyqxmd.com/read/29356023/biochemical-evaluation-of-male-androgen-status-beyond-total-testosterone
#17
Mathis Grossmann
Male hypogonadism is a clinical diagnosis confirmed by consistent biochemical findings. Clinical guidelines agree that the initial diagnostic test to confirm clinically suspected androgen deficiency should be a fasting morning total testosterone concentration by a reliable assay. They also agree that a diagnosis of androgen deficiency should only be made in men with consistent symptoms and signs, and unequivocally and repeatedly low serum testosterone concentrations. This article is protected by copyright. All rights reserved...
January 21, 2018: Clinical Endocrinology
https://www.readbyqxmd.com/read/29343749/testosterone-boosts-physical-activity-in-male-mice-via-dopaminergic-pathways
#18
Ferran Jardí, Michaël R Laurent, Nari Kim, Rougin Khalil, Dimitri De Bundel, Ann Van Eeckhaut, Lawrence Van Helleputte, Ludo Deboel, Vanessa Dubois, Dieter Schollaert, Brigitte Decallonne, Geert Carmeliet, Ludo Van den Bosch, Rudi D'Hooge, Frank Claessens, Dirk Vanderschueren
Low testosterone (T) in men, especially its free fraction, has been associated with loss of energy. In accordance, orchidectomy (ORX) in rodents results in decreased physical activity. Still, the mechanisms through which T stimulates activity remain mostly obscure. Here, we studied voluntary wheel running behavior in three different mouse models of androgen deficiency: ORX, androgen receptor (AR) knock-out (ARKO) and sex hormone binding globulin (SHBG)-transgenic mice, a novel mouse model of "low free T". Our results clearly show a fast and dramatic action of T stimulating wheel running, which is not explained by its action on muscle, as evidenced by neuromuscular studies and in a muscle-specific conditional ARKO mouse model...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29335009/isolated-follicle-stimulated-hormone-deficiency-in-male-case-report
#19
Gowri M Ratnayake, P N Weerathunga, L P Ruwanpura, Amila Wickramasinghe, Prasad Katulanda
BACKGROUND: Recent rapid advances in assisted reproductive health technologies enables couples with subfertility to conceive through various intervention. Majority of treatment modalities target the female partner. However it is important to identify and treat male factor subfertility right at the outset. We report a case of isolated follicle stimulating hormone deficiency resulting in azoospermia and primary subfertility. CASE PRESENTATION: A 28 year otherwise healthy male presented with primary subfertility with a healthy female counterpart...
January 15, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29324451/aromatase-deficiency-due-to-a-homozygous-cyp19a1-mutation-in-a-46-xx-egyptian-patient-with-ambiguous-genitalia
#20
Inas Mazen, Ken McElreavey, Aya Elaidy, Alaa K Kamel, Mohamed S Abdel-Hamid
Aromatase deficiency (AD) is a very rare disorder resulting from mutations in the CYP19A1 gene encoding aromatase, a cytochrome P450 enzyme that plays a pivotal role in androgen conversion to estrogens. AD is inherited in an autosomal recessive trait, and to date only 35 cases have been described in the literature. Herein, we depict a new patient reared as a male, who presented at the age of 21 years with no palpable testis, hypoplastic scrotum, penis-like phallus (3 cm), and penoscrotal hypospadias. The patient was born to consanguineous parents, his karyotype was 46,XX, and SRY was negative...
January 12, 2018: Sexual Development: Genetics, Molecular Biology, Evolution, Endocrinology, Embryology, and Pathology of Sex Determination and Differentiation
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