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https://www.readbyqxmd.com/read/29449314/vitamin-d-pcos-and-androgens-in-men-a-systematic-review
#1
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/29432471/in-vitro-mouse-spermatogenesis-with-an-organ-culture-method-in-chemically-defined-medium
#2
Hiroyuki Sanjo, Mitsuru Komeya, Takuya Sato, Takeru Abe, Kumiko Katagiri, Hiroyuki Yamanaka, Yoko Ino, Noriaki Arakawa, Hisashi Hirano, Tatsuma Yao, Yuta Asayama, Akio Matsuhisa, Masahiro Yao, Takehiko Ogawa
We previously reported the successful induction and completion of mouse spermatogenesis by culturing neonatal testis tissues. The culture medium consisted of α-minimum essential medium (α-MEM), supplemented with Knockout serum replacement (KSR) or AlbuMAX, neither of which were defined chemically. In this study, we formulated a chemically defined medium (CDM) that can induce mouse spermatogenesis under organ culture conditions. It was found that bovine serum albumin (BSA) purified through three different procedures had different effects on spermatogenesis...
2018: PloS One
https://www.readbyqxmd.com/read/29412804/testosterone-to-estrogen-conversion-is-not-responsible-for-the-vasodilating-effects-of-testosterone-ex-vivo
#3
Shijin Tan, Dong Yi, Wei Zhu, Rong Sun, Meng Wei
Men have a higher incidence of cardiovascular disease, but poorer vasodilatation than women. However, testosterone exerts vasodilating actions ex vivo. We aimed to determine if reactive oxygen species (ROS) produced in vivo could cause 'eNOS uncoupling' that accounts for the disparity between in vivo and ex vivo results. Ovariectomized SHR and WKY rats were divided into 3 groups: untreated, estradiol benzoate (EB) treated, and testosterone propionate (TP) treated. EB and TP rats were treated for 8 weeks, and blood pressure, serum estrogen, progesterone, and testosterone were measured...
January 31, 2018: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/29408903/vitamin-d-deficiency-causes-inward-hypertrophic-remodeling-and-alters-vascular-reactivity-of-rat-cerebral-arterioles
#4
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/29407900/advancement-of-puberty-and-enhancement-of-seminal-characteristics-by-supplementation-of-trace-minerals-to-bucks
#5
A Arangasamy, M Venkata Krishnaiah, N Manohar, S Selvaraju, P R Guvvala, N M Soren, I J Reddy, K S Roy, J P Ravindra
Attainment of puberty in animals is dependent on their age, body weight, nutritional status, genetic and environmental conditions. Nutritionally, organic minerals are suggested to improve semen production, sperm motility and male fertility. In this context, role of organic zinc (Zn) and copper (Cu) in advancing male puberty and semen characters in Osmanabadi goats were studied. Forty one (n = 41) bucks (Aged 5 months) were divided into ten groups and the dietary treatments comprised of a control group (basal diet; without additional trace mineral supplementation) and nine treatment groups that received, in addition to the basal diet, various doses of trace minerals (mg) on per kg dry matter basis, organic Zn as low Zn20, medium Zn40 and high Zn60, organic Cu as low Cu12...
February 3, 2018: Theriogenology
https://www.readbyqxmd.com/read/29402482/taxifolin-suppresses-rat-and-human-testicular-androgen-biosynthetic-enzymes
#6
Fei Ge, Erpo Tian, Li Wang, Xiaoheng Li, Qiqi Zhu, Yiyan Wang, Ying Zhong, Ren-Shan Ge
Taxifolin is a flavonoid. It has been used as a chemopreventive agent and supplement. It may have some beneficial effects to treat prostate cancer by suppressing androgen production in Leydig cells. The objective of the present study was to study the effects of taxifolin on androgen production of rat Leydig cells isolated from immature testis and some rat and human testosterone biosynthetic enzyme activities. Rat Leydig cells were incubated with 100μM taxifolin without (basal) or with 10ng/ml luteinizing hormone (LH), 10mM 8-bromoadenosine 3',5'-cyclic monophosphate (8BR), and steroid enzyme substrates (20μM): 22R-hydroxychloesterol, pregnenolone, progesterone, and androstenedione...
February 2, 2018: Fitoterapia
https://www.readbyqxmd.com/read/29401540/eighteen-year-effect-of-androgen-therapy-on-bone-mineral-density-in-trans-gender-men
#7
Petr Dan Broulik, Václav Urbánek, Petr Libanský
The study explores the influence of long-term androgen supplementation (18 years) on bone metabolism in trans(gender) men. Thirty five trans(gender) men aged (47±4) were treated with adequate dose of testosterone. BMD was measured by DEXA at lumbar spine and neck and T score was determined. Biochemical parameters of bone turnover were measured in all patients. As compared with female and male age matched controls they showed a not significantly different T-score at spine [1.213±0.15 in trans(gender) men vs...
February 2018: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29390199/intramuscular-testosterone-supplementation-ameliorates-depression-in-hypogonadal-men-a-retrospective-study-in-an-outpatient-department
#8
A Miclea, M Miclea, M Pistor, K Stegmayer, R Hoepner
INTRODUCTION: Substantial evidence has indicated an association between hypogonadism and depressive symptoms, which led to the conduction of studies that found an ameliorating effect of testosterone (T) supplementation (S) upon depression in men. METHODS: Retrospective analysis of medical records identified 16 depressed, hypogonadal men who have not responded adequately to initial antidepressant therapy and subsequently received intramuscular T injections. Following the proposal of Button et al...
February 1, 2018: Pharmacopsychiatry
https://www.readbyqxmd.com/read/29379666/could-the-female-to-male-transgender-population-be-donor-candidates-for-uterus-transplantation
#9
Murat Api, Ayşen Boza, Mehmet Ceyhan
Objective: To evaluate the eligibility of female-to-male (FtM) transgender people as donor candidates with regard to histologic, surgical, and social aspects. Materials and Methods: In this prospective cohort study, 31 FtM transgender people underwent standard hysterectomy and bilateral salpingo-oophorectomy for gender reassignment upon their request. The pelvic viscera of the transgender people was intraoperatively observed and the histology of the removed uteri were evaluated for fertility capacity and procurement surgery...
December 2017: Turkish journal of obstetrics and gynecology
https://www.readbyqxmd.com/read/29371946/episode-like-pulse-testosterone-supplementation-induces-tumor-senescence-and-growth-arrest-down-modulating-androgen-receptor-through-modulation-of-p-erk1-2-parser81-and-cdk1-signaling-biological-implications-for-men-treated-with-testosterone-replacement-therapy
#10
Giovanni Luca Gravina, Francesco Marampon, Patrizia Sanità, Claudio Festuccia, Chiara Forcella, Luca Scarsella, Anna Jitariuc, Antonella Vetuschi, Roberta Sferra, Alessandro Colapietro, Eleonora Carosa, Susanna Dolci, Andrea Lenzi, Emmanuele A Jannini
Despite the growing body of knowledge showing that testosterone (T) may not significantly affect tumor progression in hypogonadal patients treated for prostate cancer (Pca), the use of this hormone in this population still remains controversial. The effects of continuous or pulsed T stimulation were tested in vitro and in vivo on androgen-sensitive Pca cell lines in order to assess the differential biological properties of these two treatment modalities. Pulsed T treatment resulted in a greater inhibition than continuous T supplementation of tumor growth in vitro and in vivo...
December 26, 2017: Oncotarget
https://www.readbyqxmd.com/read/29345161/caffeine-improves-triathlon-performance-a-field-study-in-males-and-females
#11
Sunita Potgieter, Hattie H Wright, Carine Smith
The ergogenic effect of caffeine on endurance exercise is commonly accepted. We aimed to elucidate realistically the effect of caffeine on triathlon event performance using a field study design, while allowing investigation into potential mechanisms at play. A double-blind, randomized, crossover, field trial was conducted. Twenty-six triathletes (14 males, 12 females) participated (age: 37.8±10.6 years, habitual caffeine intake: 413±505 mg/day, percentage body fat: 14.5±7.2%, training/week: 12.8±4.5 hours)...
January 18, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29336631/the-beneficial-radioprotective-effect-of-tomato-seed-oil-against-gamma-radiation-induced-damage-in-male-rats
#12
Magda K Ezz, Nashwa K Ibrahim, Mahmoud M Said, Mostafa A Farrag
Radiation protection research receives intense focus due to its significant impact on human health. The present study was undertaken to investigate the protective effect of pretreatment with tomato seed oil (TSO) against gamma radiation-induced damage in rats. Male Wistar rats were divided into four groups: (1) untreated control; (2) TSO-supplemented; (3) gamma-irradiated; (4) TSO-pretreated and gamma-irradiated. Acute exposure of animals to a single gamma radiation dose (6 Gy) induced oxidative stress in major body organs, altered serum lipid homeostasis, significantly increased serum testosterone and sorbitol dehydrogenase levels, and elicited a systemic inflammation as manifested by the induction of serum vascular cell adhesion molecule-1...
January 16, 2018: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/29319776/hypercalcemia-and-acute-renal-insufficiency-following-use-of-a-veterinary-supplement
#13
Marcelo Fernando Ronsoni, Heloisa de Cassia Dos Santos, Bruno da Silveira Colombo, Carina Gabriela Correa, Ana Paula Gomes Moritz, Marisa Helena Cesar Coral, Simone Van de Sande-Lee, Alexandre Hohl
A previously healthy 24 yo male presented with a two-month history of epigastric pain, nausea, vomiting, fatigue and malaise. He reported abuse of different substances, including an injectable veterinary vitamin compound, which contains high doses of vitamin A, D and E, and an oily vehicle that induces local edema and enhances muscle volume. Serum creatinine was 3.1 mg/dL, alanine transaminase 160 mg/dL, aspartate transaminase 11 mg/dL, total testosterone 23 ng/dL, 25-OH-vitamin D >150 ng/mL (toxicity >100), 1,25-OH-vitamin D 80 pg/mL, vitamin A 0...
October 2017: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/29319133/the-assessment-of-testosterone-and-radioisotopic-index-of-bone-metabolism-and-bone-mineral-density-in-men-with-testosterone-deficiency-after-one-year-of-testosterone-therapy
#14
Wieslaw Tryniszewski, Grzegorz Kamiński, Zbigniew Maziarz, Michal Nowak, Mariusz Gadzicki, Maciej Radek
BACKGROUND: Testosterone deficiency in men is characterized by typical symptoms of hypogonadism and negative influence on the preservation of bone mass. In this study, we analysed the relationship between testosterone concentration and bone metabolism. Moreover, we assessed the impact of one-year compensation of testosterone deficiency in elderly men on bone metabolism and bone mineral density. Radioisotopic methods of bone metabolism assessment provide new research opportunities. MATERIALS AND METHODS: Men with total testosterone concentration (TT) ≤ 3 ng/ml were included into this study...
January 10, 2018: Nuclear Medicine Review. Central & Eastern Europe
https://www.readbyqxmd.com/read/29316840/protective-effect-of-motiliperm-in-varicocele-induced-oxidative-injury-in-rat-testis-by-activating-phosphorylated-inositol-requiring-kinase-1%C3%AE-p-ire1%C3%AE-and-phosphorylated-c-jun-n-terminal-kinase-p-jnk-pathways
#15
Kiran Kumar Soni, Li Tao Zhang, Bo Ram Choi, Keshab Kumar Karna, Jae Hyung You, Yu Seob Shin, Sung Won Lee, Chul Young Kim, Chen Zhao, Han-Jung Chae, Hye Kyung Kim, Jong Kwan Park
CONTEXT: MOTILIPERM was prepared as a mixture of extracts of three medicinal herbs [roots of Morinda officinalis How (Rubiaceae), outer scales of Allium cepa L. (Liliaceae) and seeds of Cuscuta chinensis Lamark (Convolvulaceae)]. OBJECTIVE: To investigate the role of reactive oxygen species (ROS)-based endoplasmic reticulum (ER) stress in a rat model of varicocele and the therapeutic efficacy of MOTILIPERM in this model. MATERIALS AND METHODS: Sixty male rats were divided into five experimental groups: a normal control group (CTR + vehicle), a control group administered MOTILIPERM 200 mg/kg (CTR + M 200), a varicocele-induced control group (VC + vehicle) and two varicocele-induced groups administered MOTILIPERM 100 (VC + M 100) or 200 (VC + M 200) mg/kg for 4 weeks...
December 2018: Pharmaceutical Biology
https://www.readbyqxmd.com/read/29290022/omega-3-fatty-acids-supplementation-with-lithium-and-aripiprazole-for-improving-the-balance-of-circulating-hormones-and-brain-neurotransmitters-in-manic-mice-model
#16
Pandiyan Arunagiri, Elumalai Balamurugan, Murugesan Saravanakumar, Mackraj Irene
The present study was designed to evaluate the combined effect of lithium and aripiprazole supplemented with omega-3 fatty acids in methylphenidate (MPD)-induced manic mice. Swiss albino mice were administered with MPD or saline for 14 days, and based on changes in behavioral activities animals were treated with lithium, aripiprazole, and omega-3 fatty acids from the 8th day. Behavioral patterns were analyzed by video tracking. Thyroxine, follicle-stimulating hormone (FSH), luteinizing hormone (LH), and testosterone levels were assayed in serum using ELISA kits...
December 30, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29276148/testosterone-diminishes-cabazitaxel-efficacy-and-intratumoral-accumulation-in-a-prostate-cancer-xenograft-model
#17
Lisanne Mout, Ronald de Wit, Debra Stuurman, Esther Verhoef, Ron Mathijssen, Corrina de Ridder, Martijn Lolkema, Wytske van Weerden
Inactivation of the androgen receptor (AR) pathway by androgen deprivation therapy (ADT) is the mainstay of (metastatic) prostate cancer therapy. Ultimately, the AR pathway will be re-activated despite castrate levels of circulating androgens. Thereby, maintaining its role even in castration resistant prostate cancer (CRPC). The recent STAMPEDE and CHAARTED trials showed that docetaxel in combination with ADT increased survival in hormone sensitive prostate cancer patients, suggesting cross-talk between AR signaling and chemotherapy efficacy...
December 20, 2017: EBioMedicine
https://www.readbyqxmd.com/read/29275030/testosterone-and-cardiovascular-health
#18
REVIEW
Andrew Elagizi, Tobias S Köhler, Carl J Lavie
There is an ongoing debate in the medical community regarding the effects of testosterone on cardiovascular (CV) health. For decades, there has been conflicting evidence regarding the association of endogenous testosterone levels and CV disease (CVD) events that has resulted in much debate and confusion among health care providers and patients alike. Testosterone therapy has become increasingly widespread, and after the emergence of studies that reported increased CVD events in patients receiving testosterone therapy, the US Food and Drug Administration (FDA) released a warning statement about testosterone and its potential risk regarding CV health...
December 20, 2017: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/29250843/insulin-resistance-improvement-by-cinnamon-powder-in-polycystic-ovary-syndrome-a-randomized-double-blind-placebo-controlled-clinical-trial
#19
Mahdie Hajimonfarednejad, Majid Nimrouzi, Mojtaba Heydari, Mohammad Mehdi Zarshenas, Mohammad Javad Raee, Bahia Namavar Jahromi
Our aim is to assess the effect of cinnamon powder capsules on insulin resistance, anthropometric measurements, glucose and lipid profiles, and androgens of women with polycystic ovarian syndrome (PCOS). Out of 80 women that were diagnosed as PCOS by Rotterdam Criteria, 66 were enrolled in this randomized double-blind placebo-controlled clinical trial. All of the PCOS women were taking medroxy progesterone acetate 10 mg/day for the last 10 days of their menstrual cycles. The cases were randomly allocated to 2 groups...
December 18, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29238244/influence-of-a-thermogenic-dietary-supplement-on-safety-markers-body-composition-energy-expenditure-muscular-performance-and-hormone-concentrations-a-randomized-placebo-controlled-double-blind-trial
#20
Grant M Tinsley, Stacie Urbina, Jacy Mullins, Jordan Outlaw, Sara Hayward, Matt Stone, Cliffa Foster, Colin Wilborn, Lem Taylor
Dietary supplementation is commonly employed by individuals seeking to improve body composition and exercise performance. The purpose of the present study was to examine the safety and effectiveness of a commercially available dietary supplement designed to promote thermogenesis and fat loss. In a randomized double-blind trial, participants were assigned to consume placebo or a multi-ingredient supplement containing caffeine, green tea extract, l-carnitine, evodiamine and other ingredients that purportedly enhance thermogenesis...
December 2017: Journal of Sports Science & Medicine
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