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Testosterone androgen cholesterol

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https://www.readbyqxmd.com/read/28499525/consecutive-cyproterone-acetate-and-estradiol-treatment-in-late-pubertal-transgender-female-adolescents
#1
Lloyd J W Tack, Robin Heyse, Margarita Craen, Karlien Dhondt, Heidi Vanden Bossche, Jolien Laridaen, Martine Cools
BACKGROUND: Cyproterone acetate (CA) is an antiandrogenic progestin commonly used in adult transwomen to suppress endogenous androgens, often in combination with estrogens to induce feminization. AIM: To assess the (side) effects and biochemical changes of CA alone and in combination with estrogens in adolescent trans-girls. METHODS: This study was a retrospective analysis of clinical and biochemical data from 27 trans-girls who presented at Tanner stage G4 and were treated with CA monotherapy for at least 6 months (mean = 12 months) and then in combination with incremental doses of estrogens (CA + E; mean = 16 months)...
May 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28466507/effects-of-dietary-approach-to-stop-hypertension-diet-on-androgens-antioxidant-status-and-body-composition-in-overweight-and-obese-women-with-polycystic-ovary-syndrome-a-randomised-controlled-trial
#2
M Azadi-Yazdi, M Karimi-Zarchi, A Salehi-Abargouei, H Fallahzadeh, A Nadjarzadeh
BACKGROUND: Polycystic ovary syndrome (PCOS) is the most common endocrine disease in reproductive age women. The present study aimed to determine the effects of Dietary Approaches to Stop Hypertension (DASH) diet on reproductive hormones, plasma total antioxidant status and anthropometric indices in overweight and obese PCOS women. METHODS: In this randomised controlled clinical trial, 60 women with PCOS were randomly assigned to one of two diets with energy restriction: the DASH diet and a control diet...
June 2017: Journal of Human Nutrition and Dietetics: the Official Journal of the British Dietetic Association
https://www.readbyqxmd.com/read/28455626/influences-of-flavones-on-cell-viability-and-camp-dependent-steroidogenic-gene-regulation-in-ma-10-leydig-cells
#3
Michelle Cormier, Firas Ghouili, Pauline Roumaud, William Bauer, Mohamed Touaibia, Luc J Martin
Testicular Leydig cells are major contributors of androgen synthesis and secretion, which play an important role in testis development, normal masculinization, maintenance of spermatogenesis, and general male fertility. The rate-limiting step in testosterone biosynthesis involves the transfer of cholesterol to the mitochondrial inner membrane by the steroidogenic acute regulatory (Star) protein, a critical factor in steroid hormone biosynthesis. Once inside the mitochondria, cholesterol is metabolized by the steroidogenic enzyme Cyp11a1 to pregnenolone, which is further converted to testosterone by the action of other steroidogenic enzymes...
April 28, 2017: Cell Biology and Toxicology
https://www.readbyqxmd.com/read/28353313/echocardiographic-evaluation-of-diastolic-functions-in-patients-with-polycystic-ovary-syndrome-a-comperative-study-of-diastolic-functions-in-sub-phenotypes-of-polycystic-ovary-syndrome
#4
Erkan Yildirim, Onur Karabulut, Uygar Cagdas Yuksel, Murat Celik, Baris Bugan, Yalcin Gokoglan, Mustafa Ulubay, Mutlu Gungor, Mustafa Koklu
BACKGROUND: Polycystic ovary syndrome (PCOS) is a heterogeneous endocrine disorder among reproductive-aged women. It is known to be associated with cardiovascular diseases. The aim of this study was to determine and compare the echocardiographic data of patients according to the phenotypes of PCOS. METHODS: This study included 113 patients with PCOS and 52 controls. Patients were classified into four potential PCOS phenotypes. Laboratory analyses and echocardiographic measurements were performed...
March 29, 2017: Cardiology Journal
https://www.readbyqxmd.com/read/28228318/endocrine-and-cardiometabolic-cord-blood-characteristics-of-offspring-born-to-mothers-with-and-without-polycystic-ovary-syndrome
#5
Nadine M P Daan, Maria P H Koster, Regine P Steegers-Theunissen, Marinus J C Eijkemans, B C J M Fauser
OBJECTIVE: To compare the endocrine and cardiometabolic cord blood characteristics of offspring of mothers with polycystic ovary syndrome (PCOS) with those of healthy controls. DESIGN: Cross-sectional case control study. SETTING: University medical centers. PATIENT(S): Offspring from mothers with PCOS (n = 61) and healthy controls (n = 82). INTERVENTION(S): Cord blood withdrawal from neonates. MAIN OUTCOME MEASURE(S): Cord blood estradiol, androstenedione, dehydroepiandrosterone sulfate (DHEAS), testosterone, sex hormone-binding globulin, free androgen index (FAI), insulin, total cholesterol, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, triglycerides, c-reactive protein, adiponectin, and leptin...
January 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28161330/testosterone-increases-ccl-2-expression-in-visceral-adipose-tissue-from-obese-women-of-reproductive-age
#6
Nicolás Crisosto, Cristián Flores, Manuel Maliqueo, Bárbara Echiburú, Jaime Vásquez, Fernando Maluenda, Teresa Sir-Petermann
CONTEXT: Hyperandrogenic states and obesity in women are associated with insulin-resistance. Androgens reduce glucose uptake in adipose cells and increase TNFα production in peripheral monocytes. Inflammatory cytokines have a known detrimental effect on insulin resistance. The aim of the present study was to explore the role of testosterone in local cytokine production in visceral adipose tissue from women of reproductive age. DESIGN: Twenty-four women 18-40 years old, undergoing elective abdominal surgery for benign and non-inflammatory conditions, were recruited for the study...
February 1, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28086774/androgenic-effects-of-aqueous-and-methanolic-extracts-of-ficus-asperifolia-in-male-wistar-rats
#7
Pierre Watcho, Hermine Meli Watio, Modeste Wankeu-Nya, Esther Ngadjui, Patrick Deeh Defo, Pepin Alango Nkeng-Efouet, Telesphore Benoit Nguelefack, Albert Kamanyi
BACKGROUND: Androgen deficiency is a clinical syndrome resulting from the inability of the testes to produce physiological levels of testosterone due to a disturbance occurring at one or more levels of the hypothalamic-pituitary-testicular axis. The present study was undertaken to evaluate the androgenic properties of aqueous and methanolic extracts of Ficus asperifolia on normal and castrated immature rats. METHODS: Normal rats were treated either per os with aqueous or methanolic extract of Ficus asperifolia (100 mg/kg or 500 mg/kg b...
January 13, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28058854/effect-of-metformin-on-clinical-metabolic-and-endocrine-outcomes-in-women-with-polycystic-ovary-syndrome-a-meta-analysis-of-randomized-controlled-trials
#8
Roshni Patel, Gaurang Shah
OBJECTIVE: Metformin has been used as a treatment option for polycystic ovary syndrome (PCOS) since 1994; however, more than a hundred randomized clinical trials have reported controversial results regarding the efficacy of metformin in PCOS. This could be due to the small sample size and high variability in methodology between studies. The objective of the present meta-analysis was to determine the effect of metformin on clinical, metabolic, and endocrine outcomes compared to placebo in PCOS women...
February 3, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28008755/an-exploratory-analysis-of-the-association-between-levels-of-hormones-implied-in-steroid-biosynthesis-and-activity-of-abiraterone-in-patients-with-metastatic-castration-resistant-prostate-cancer
#9
Valentina Bertaglia, Marcello Tucci, Francesca Vignani, Consuelo Buttigliero, Emiliano Aroasio, Alfredo Berruti, Giorgio V Scagliotti, Massimo DI Maio
BACKGROUND: Abiraterone acetate, approved for patients with metastatic castration-resistant prostate cancer (mCRPC), blocks androgen byosinthesis. We aimed to describe changes determined by abiraterone in hormones implied in steroid biosynthesis, exploring association between hormonal levels and drug activity. METHODS: Patients with mCRPC, receiving standard abiraterone + prednisone after docetaxel failure, were studied. We determined serum levels of progesterone, 17OH-progesterone, cortisol, ACTH, DHEA-sulphate, androstenedione, testosterone, sex hormone-binding globulin, aldosterone, plasma renin activity, and cholesterol, baseline and every 12 weeks...
December 22, 2016: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/27999286/testosterone-deficiency-induces-changes-of-the-transcriptomes-of-visceral-adipose-tissue-in-miniature-pigs-fed-a-high-fat-and-high-cholesterol-diet
#10
Lifan Zhang, Yueqin Cai, Shengjuan Wei, Yun Ling, Liang Zhu, Dongfeng Li, Zhaowei Cai
Testosterone deficiency causes fat deposition, particularly in visceral fat, and its replacement might reverse fat accumulation, however, the underlying mechanisms of such processes under diet-induced adiposity are largely unknown. To gain insights into the genome-wide role of androgen on visceral adipose tissue (VAT), RNA-Seq was used to investigate testosterone deficiency induced changes of VAT in miniature pigs fed a high-fat and high-cholesterol (HFC) diet among intact male pigs (IM), castrated male pigs (CM), and castrated male pigs with testosterone replacement (CMT) treatments...
December 16, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27927075/soy-isoflavones-exert-beneficial-effects-on-letrozole-induced-rat-polycystic-ovary-syndrome-pcos-model-through-anti-androgenic-mechanism
#11
Ravi Kumar Rajan, Siva Selva Kumar M, Bhaskar Balaji
CONTEXT: Soy is the main source of phytoestrogens, which has long been used as traditional food. One major subtype of phytoestrogens includes isoflavones and they are scientifically validated for their beneficial actions on many hormone-dependent conditions. OBJECTIVE: The present study examines the effect of soy isoflavones on letrozole-induced polycystic ovary syndrome (PCOS) rat model. MATERIALS AND METHODS: PCOS was induced in Sprague-Dawley rats with of 1 mg/kg letrozole, p...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27923166/a-comparative-systematic-review-of-yasmin-drospirenone-pill-versus-standard-treatment-options-for-symptoms-of-polycystic-ovary-syndrome
#12
REVIEW
Jing Li, Jing Ren, Wenxia Sun
OBJECTIVES: To systematically review the impact of Yasmin (drospirenone pill) compares with other standard treatments for symptoms of Polycystic Ovary Syndrome (PCOS). STUDY DESIGN: The relevant studies of the randomized controlled trials in women with PCOS treated with drospirenone were retrieved and the systematic evaluation was conducted. RESULTS: Eighteen articles were included. Compared with drospirenone (DRSP) monotherapy, DRSP plus metformin was better in reducing body mass index (BMI), luteinizing hormone (LH) and low-density lipoprotein cholesterol (LDL-C)...
March 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27797332/-experimental-study-of-the-influence-of-recombinant-human-lactoferrin-on-the-levels-of-androgens-and-basic-parameters-of-lipid-and-protein-metabolism
#13
Yu A Rudnichenko, V S Lukashevich, I V Zalutsky
System administration of human recombinant lactoferrin per os to rats for 2,5 months increased serum and testicular levels of total testosterone. The data correlated with the increase in free testosterone levels. These changes were accompanied by an increase of concentrations of steroidogenesis substrates (cholesterol, progesterone, and 17-OH progesterone) and a decrease of the estradiol content in blood serum. This resulted in the 3.6-3.8-fold increase of the testosterone/estradiol index. Basic parameters of lipid and protein were also studied...
July 2016: Biomedit︠s︡inskai︠a︡ Khimii︠a︡
https://www.readbyqxmd.com/read/27672740/paracrine-sonic-hedgehog-signaling-contributes-significantly-to-acquired-steroidogenesis-in-the-prostate-tumor-microenvironment
#14
Amy A Lubik, Mannan Nouri, Sarah Truong, Mazyar Ghaffari, Hans H Adomat, Eva Corey, Michael E Cox, Na Li, Emma S Guns, Parvin Yenki, Steven Pham, Ralph Buttyan
Despite the substantial benefit of androgen deprivation therapy (ADT) for metastatic prostate cancer, patients often progress to castration-resistant disease (CRPC) that is more difficult to treat. CRPC is associated with renewed androgen receptor activity in tumor cells and restoration of tumor androgen levels through acquired intratumoral steroidogenesis (AIS). Although prostate cancer (PCa) cells have been shown to have steroidogenic capability in vitro, we previously found that benign prostate stromal cells (PrSCs) can also synthesize testosterone (T) from an adrenal precursor, DHEA, when stimulated with a hedgehog (Hh) pathway agonist, SAG...
January 15, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27488580/testosterone-differentially-regulates-targets-of-lipid-and-glucose-metabolism-in-liver-muscle-and-adipose-tissues-of-the-testicular-feminised-mouse
#15
Daniel M Kelly, Samia Akhtar, Donna J Sellers, Vakkat Muraleedharan, Kevin S Channer, T Hugh Jones
Testosterone deficiency is commonly associated with obesity, metabolic syndrome, type 2 diabetes and their clinical consequences-hepatic steatosis and atherosclerosis. The testicular feminised mouse (non-functional androgen receptor and low testosterone) develops fatty liver and aortic lipid streaks on a high-fat diet, whereas androgen-replete XY littermate controls do not. Testosterone treatment ameliorates these effects, although the underlying mechanisms remain unknown. We compared the influence of testosterone on the expression of regulatory targets of glucose, cholesterol and lipid metabolism in muscle, liver, abdominal subcutaneous and visceral adipose tissue...
November 2016: Endocrine
https://www.readbyqxmd.com/read/27436076/effects-of-8-year-treatment-of-long-acting-testosterone-undecanoate-on-metabolic-parameters-urinary-symptoms-bone-mineral-density-and-sexual-function-in-men-with-late-onset-hypogonadism
#16
Sompol Permpongkosol, Kalayanee Khupulsup, Supatra Leelaphiwat, Sarawan Pavavattananusorn, Supranee Thongpradit, Thanom Petchthong
INTRODUCTION: The long-term effects of long-acting testosterone undecanoate (TU) and androgen receptor CAG repeat lengths in Thai men with late-onset hypogonadism (LOH) have not been reported. AIM: To analyze the 8-year follow-up effects of intramuscular TU therapy on metabolic parameters, urinary symptoms, bone mineral density, and sexual function and investigate CAG repeat lengths in men with LOH. METHODS: We reviewed the medical records of 428 men with LOH who had been treated with TU and 5 patients were diagnosed with prostate cancer during TU therapy...
August 2016: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/27423106/changes-in-hormone-and-lipid-levels-in-male-patients-with-focal-seizures-when-switched-from-carbamazepine-to-lacosamide-as-adjunctive-treatment-to-levetiracetam-a-small-phase-iiib-prospective-multicenter-open-label-trial
#17
Christian E Elger, Michael Rademacher, Christian Brandt, Sami Elmoufti, Peter Dedeken, Klaus Eckhardt, Frank Tennigkeit, Marc De Backer
Treatment with enzyme-inducing antiepileptic drugs (AEDs) such as carbamazepine (CBZ) can lead to changes in reproductive, endocrine, and lipid parameters, resulting in clinical symptoms for some patients. Previous studies indicate that these changes can be reversed by switching to a nonenzyme-inducing AED. Lacosamide is a newer-generation AED, not known to induce or strongly inhibit cytochrome P450 (CYP450) enzymes. In this phase IIIb, prospective, multicenter, open-label, single-arm trial (NCT01375374), the serum concentrations of CYP-related reproductive hormones, thyroid hormones, and lipids were assessed in otherwise healthy male patients with focal seizures (N=11), before and after a switch from CBZ (600-1200mg/day at baseline) to lacosamide (target dose: 400mg/day by the end of titration) as adjunctive treatment to the nonenzyme-inducing AED levetiracetam (LEV, stable dosage of >1000mg/day throughout)...
September 2016: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/27388148/effects-of-butylated-hydroxyanisole-on-the-steroidogenesis-of-rat-immature-leydig-cells
#18
Xiaoheng Li, Shuyan Cao, Baiping Mao, Yanfang Bai, Xiaomin Chen, Xiudi Wang, Ying Wu, Linxi Li, Han Lin, Qingquan Lian, Ping Huang, Ren-Shan Ge
Butylated hydroxyanisole (BHA) is a synthetic antioxidant used for food preservation. Whether BHA affects testosterone biosynthesis is still unclear. The effects of BHA on the steroidogenesis in rat immature Leydig cells were investigated. Rat immature Leydig cells were isolated from 35-old-day rats and cultured with BHA (50 μM) for 3 h in combination with 22R-OH-cholesterol, pregnenolone, progesterone, androstenedione, testosterone or dihydrotestosterone, and the concentrations of 5α-androstanediol and testosterone in the media were measured...
September 2016: Toxicology Mechanisms and Methods
https://www.readbyqxmd.com/read/27251588/androgen-receptor-ggc-repeat-might-be-more-involved-than-cag-repeat-in-the-regulation-of-the-metabolic-profile-in-men
#19
Giacomo Tirabassi, Melissa Cutini, Benedetta Beltrami, Nicola Delli Muti, Andrea Lenzi, Giancarlo Balercia
The influence of androgen receptor (AR) GGC repeat polymorphism on the metabolic profile of men has been much less studied than the one of CAG tract polymorphism. Therefore, in this study, we looked for the association of GGC and CAG tract with cardiovascular risk factors in men. Ninety-eight men followed by our andrological unit were retrospectively reviewed. Clinical and biochemical parameters on cardiovascular risk were considered. AR CAG and GGC polymorphisms were studied. GGC triplets were found to be positively and significantly correlated with several cardiovascular risk factors...
December 2016: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/27239195/lipid-profile-in-adolescent-girls-with-type-1-diabetes-mellitus-and-hyperandrogenemia
#20
Agnieszka Zachurzok, Grazyna Deja, Aneta Gawlik, Agnieszka Drosdzol-Cop, Katarzyna Klimek, Ewa Malecka-Tendera
Study Objectives. The study aim was to evaluate whether hyperandrogenemia in adolescent girls with type 1 diabetes mellitus (T1DM) may adversely influence lipid profile. Design and Participants. Lipid levels in 16 diabetic girls with biochemical hyperandrogenemia (T1DM-H) aged 16.3 ± 1.2 years were compared to 38 diabetic girls with normal androgen levels (T1DM-N) aged 15.8 ± 1.2 years. 15 healthy girls served as controls (CG). In all patients, anthropometric measurements were done, and androgens and SHBG were assessed...
2016: International Journal of Endocrinology
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