keyword
MENU ▼
Read by QxMD icon Read
search

Testosterone receptor

keyword
https://www.readbyqxmd.com/read/28724410/identification-and-characterization-of-long-non-coding-rnas-in-subcutaneous-adipose-tissue-from-castrated-and-intact-full-sib-pair-huainan-male-pigs
#1
Jing Wang, Liushuai Hua, Junfeng Chen, Jiaqing Zhang, Xianxiao Bai, Binwen Gao, Congjun Li, Zhihai Shi, Weidong Sheng, Yuan Gao, Baosong Xing
BACKGROUND: Long non-coding RNAs (lncRNAs) regulate adipose tissue metabolism, however, their function on testosterone deficiency related obesity in humans is less understood. For this research, intact and castrated male pigs are the best model animal because of their similar proportional organ sizes, cardiovascular systems and metabolic features. RESULTS: We identified lncRNAs in subcutaneous adipose tissue by deep RNA-sequencing using the intact and castrated Huainan male pigs...
July 19, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28720108/early-pregnancy-sex-steroids-during-primiparous-pregnancies-and-maternal-breast-cancer-a-nested-case-control-study-in-the-northern-sweden-maternity-cohort
#2
Renée T Fortner, Eglé Tolockiene, Helena Schock, Husam Oda, Hans-Åke Lakso, Göran Hallmans, Rudolf Kaaks, Paolo Toniolo, Anne Zeleniuch-Jacquotte, Kjell Grankvist, Eva Lundin
BACKGROUND: Pregnancy and parity are associated with subsequent breast cancer risk. Experimental and epidemiologic data suggest a role for pregnancy sex steroid hormones. METHODS: We conducted a nested case-control study in the Northern Sweden Maternity Cohort (1975-2007). Eligible women had provided a blood sample in the first 20 weeks of gestation during a primiparous pregnancy leading to a term delivery. The current study includes 223 cases and 417 matched controls (matching factors: age at and date of blood collection)...
July 18, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28717268/empiric-medical-therapy-with-hormonal-agents-for-idiopathic-male-infertility
#3
REVIEW
Nicholas N Tadros, Edmund S Sabanegh
INTRODUCTION: Infertility affects approximately 15% of all couples, and male factor contribute to up to 50% of cases. Unfortunately, the cause of male infertility is unknown in about 30% of these cases. Infertility of unknown origin is classified as idiopathic male infertility when abnormal semen parameters are present. Despite not having a definable cause, these men may respond to treatment. This review focuses on the use of empiric hormonal therapies for idiopathic male infertility...
July 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28704095/sarcopenia-an-endocrine-disorder
#4
Alexis McKee, John E Morley, Alvin M Matsumoto, Aaron Vinik
Sarcopenia is defined as low muscle function (walking speed or grip strength) in the presence of low muscle mass. A simple screening test - the SARC-F - is available to identify persons with sarcopenia. The major endocrine causes of sarcopenia are diabetes mellitus and male hypogonadism. Other causes are decreased physical activity, loss of motor neuron units, weight loss, inflammatory cytokines, reduced blood flow to muscles, very low 25(OH) vitamin D levels and decreased growth hormone and IGF-1. Treatment for sarcopenia includes resistance and aerobic exercise, leucine enriched essential amino acids, and vitamin D...
July 13, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28703914/hsd3b2-associated-in-modulating-steroid-hormone-synthesis-pathway-regulates-the-differentiation-of-chicken-embryonic-stem-cells-into-spermatogonial-stem-cells
#5
Chen Zhang, Man Wang, Nana He, Mahmoud F Ahmed, Yilin Wang, Ruifeng Zhao, Xinjian Yu, Jing Jin, Jiuzhou Song, Qisheng Zuo, Yani Zhang, Bichun Li
Steroid hormones regulate differentiation of various types of cell during embryogenesis. Testosterone is one of the androgens that bind to receptors to regulate gene expression and promote spermatogenesis. Our results showed that testosterone, as a product of steroid hormones synthesis pathway, could facilitate the differentiation of embryonic stem cells (ESCs) into spermatogonial stem cells (SSCs). The analysis of the steroid hormones synthesis pathway demonstrated that 3beta-hydroxysteroid dehydrogenase2 (Hsd3b2) plays a major role in the synthesis of testosterone...
July 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28701961/insights-into-the-development-of-the-adult-leydig-cell-lineage-from-stem-leydig-cells
#6
REVIEW
Leping Ye, Xiaoheng Li, Linxi Li, Haolin Chen, Ren-Shan Ge
Adult Leydig cells (ALCs) are the steroidogenic cells in the testes that produce testosterone. ALCs develop postnatally from a pool of stem cells, referred to as stem Leydig cells (SLCs). SLCs are spindle-shaped cells that lack steroidogenic cell markers, including luteinizing hormone (LH) receptor and 3β-hydroxysteroid dehydrogenase. The commitment of SLCs into the progenitor Leydig cells (PLCs), the first stage in the lineage, requires growth factors, including Dessert Hedgehog (DHH) and platelet-derived growth factor-AA...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28698282/circulating-sex-steroids-co-regulate-adipose-tissue-immune-cell-populations-in-healthy-men
#7
Katya B Rubinow, Jing Chao, Derek Hagman, Mario Kratz, Brian Van Yserloo, Nilesh W Gaikwad, John K Amory, Stephanie T Page
Male hypogonadism results in changes in body composition characterized by increases in fat mass. Resident immune cells influence energy metabolism in adipose tissue and could promote increased adiposity through paracrine effects. We hypothesized that manipulation of circulating sex steroid levels in healthy men would alter adipose tissue immune cell populations. Subjects (n=44 men, 19-55 years of age) received 4 weeks of treatment with the GnRH receptor antagonist acyline with daily administration of 1) placebo gel, 2) 1...
July 11, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28698119/stress-differentially-affects-the-systemic-and-leukocyte-estrogen-network-in-common-carp
#8
Ewa Szwejser, Lukasz Pijanowski, Magdalena Maciuszek, Anna Ptak, Kamil Wartalski, Malgorzata Duda, Helmut Segner, B M Lidy Verburg-van Kemenade, Magdalena Chadzinska
Both systemic and locally released steroid hormones, such as cortisol and estrogens, show immunomodulatory actions. This research gives evidence that circulating and leukocyte-derived estrogens can be involved in the regulation of the immune response in common carp, during homeostasis and upon restraining stress. It was found that stress reduced level of blood 17β-estradiol (E2) and down-regulated the gene expression of components of the "classical" estrogen system: the nuclear estrogen receptors and the aromatase CYP19, in the hypothalamus, the pituitary and in the ovaries...
July 8, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28690152/decreased-expression-of-orexin-1-receptor-in-adult-mice-testes-during-alloxan-induced-diabetes-mellitus-perturbs-testicular-steroidogenesis-and-glucose-homeostasis
#9
Deepanshu Joshi, Debarshi Sarkar, Shio Kumar Singh
Diabetes mellitus (DM) affects male reproductive system and causes infertility. The male reproductive health is largely dependent upon uptake and proper utilization of glucose by testicular cells. Results show involvement of orexin A (OXA) and its receptor (OX1R) in regulation of steroidogenesis and glucose homeostasis in adult mice testis. However, the role of OX1R in regulation of testicular functions during hyperglycemia has not been investigated so far. The present study, therefore, examined the role of OX1R in regulation of steroidogenesis and glucose homeostasis in testis of adult mice during alloxan-induced type 1 DM...
July 6, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28688795/gper1-in-sand-rat-epididymis-effects-of-seasonal-variations-castration-and-efferent-ducts-ligation
#10
Rafik Menad, Meriem Fernini, Souaâd Smaï, Xavier Bonnet, Thérèse Gernigon-Spychalowicz, Elara Moudilou, Farida Khammar, Jean-Marie Exbrayat
Estrogen plays a crucial role in regulating epididymal function and development. Estrogen signaling is mediated via two main receptors essentially involved in the genomic regulating pathway: ERα and ERβ. Recent studies revealed the contribution of a novel estrogen receptor involved in the non-genomic pathway: GPER1. This receptor belongs to the family of seven-transmembrane G-protein-coupled receptors and it triggers rapid cellular responses. Immuno-histochemical studies and Western Blot analyses were performed to investigate the GPER1 expression in the caput and cauda epididymis of free-ranging fat sand rats (Psammomys obesus) captured during the breeding and resting seasons...
June 23, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28687450/role-of-androgens-in-the-ovary
#11
REVIEW
K A Walters, D J Handelsman
It has been well established for decades that androgens, namely testosterone (T) plays an important role in female reproductive physiology as the precursor for oestradiol (E2). However, in the last decade a direct role for androgens, acting via the androgen receptor (AR), in female reproductive function has been confirmed. Deciphering the specific roles of androgens in ovarian function has been hindered as complete androgen resistant females cannot be generated by natural breeding. In addition, androgens can be converted into estrogens which has caused confusion when interpreting findings from pharmacological studies, as observed effects could have been mediated via the AR or estrogen receptor...
July 4, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28685147/genotyping-the-high-altitude-mestizo-ecuadorian-population-affected-with-prostate-cancer
#12
REVIEW
Andrés López-Cortés, Alejandro Cabrera-Andrade, Carolina Salazar-Ruales, Ana Karina Zambrano, Santiago Guerrero, Patricia Guevara, Paola E Leone, César Paz-Y-Miño
Prostate cancer (PC) is the second most commonly diagnosed type of cancer in males with 1,114,072 new cases in 2015. The MTHFR enzyme acts in the folate metabolism, which is essential in methylation and synthesis of nucleic acids. MTHFR C677T alters homocysteine levels and folate assimilation associated with DNA damage. Androgens play essential roles in prostate growth. The SRD5A2 enzyme metabolizes testosterone and the V89L polymorphism reduces in vivo SRD5A2 activity. The androgen receptor gene codes for a three-domain protein that contains two polymorphic trinucleotide repeats (CAG, GGC)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28681988/effect-of-liraglutide-on-ectopic-fat-in-polycystic-ovary-syndrome-a-randomized-clinical-trial
#13
Signe Frøssing, Malin Nylander, Elizaveta Chabanova, Jan Frystyk, Jens Juul Holst, Caroline Kistorp, Sven O Skouby, Jens Faber
Women with polycystic ovary syndrome (PCOS) were treated with the GLP-1 receptor agonist liraglutide to investigate the effect on liver fat content, visceral adipose tissue (VAT), and the prevalence of nonalcoholic fatty liver disease (NAFLD). In a double-blind, placebo-controlled, randomized clinical trial 72 women with PCOS and BMI >25 kg/m(2) and/or insulin resistance were treated with liraglutide or placebo 1.8 mg/day (2:1) for 26 weeks. Liver fat content was assessed by (1) HMR spectroscopy, VAT by MRI, body composition by DXA, and glucose metabolism by oral glucose tolerance test...
July 6, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28678568/testosterone-is-associated-with-insulin-resistance-index-independently-of-adiposity-in-women-with-polycystic-ovary-syndrome
#14
Kari Luotola, Terhi T Piltonen, Johanna Puurunen, Laure C Morin-Papunen, Juha S Tapanainen
OBJECTIVE: To study the associations between androgens, glucose homeostasis, inflammation and statin treatment in women with polycystic ovary syndrome (PCOS). DESIGN AND METHODS: Oral glucose tolerance tests, androgens, hs-CRP and interleukin-1 receptor antagonist (IL-1Ra) were analyzed at baseline and after 6 months of atorvastatin (20 mg/d) or placebo treatment in 27 women with PCOS. RESULTS: Testosterone associated with insulin resistance measured with ISIMatsuda independently of BMI, age and SHBG concentrations and the full model, including IL-1Ra, hs-CRP and HDL-C, also showed independency of BMI and waist circumference (p ≤ ...
July 5, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28677770/the-function-of-androgen-androgen-receptor-and-insulin-growth-factor%C3%A2-1-insulin-growth-factor%C3%A2-1-receptor-on-the-effects-of-tribulus%C3%A2-terrestris-extracts-in-rats-undergoing-high-intensity-exercise
#15
Yin Wu, Hongfang Yang, Xiaohui Wang
Our previous study demonstrated that treatment with Tribulus terrestris (TT) extracts (120 mg/kg) promoted the muscle weight gain and performance of rats undergoing high intensity exercise. The present study was designed to explore the mechanisms underlying the effect of treatment with TT extracts and the involvement of androgens, the androgen receptor (AR), insulin growth factor‑1 (IGF‑1) and the IGF‑1 receptor (IGF‑1R). A total of 32 Sprague‑Dawley rats were randomly divided into groups as follows: Control; TT, treated with TT extracts, E, high intensity exercise; E+TT, high intensity exercise plus TT treatment...
June 30, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28670428/evaluation-of-relationship-between-body-mass-index-with-vitamin-d-receptor-gene-expression-and-vitamin-d-levels-of-follicular-fluid-in-overweight-patients-with-polycystic-ovary-syndrome
#16
Esmat Aghadavod, Hakimeh Mollaei, Mohammad Nouri, Hamed Hamishehkar
BACKGROUND: Polycystic ovary syndrome (PCOS) is the most common endocrine disorder associated with reproductive disorders and metabolic dysfunctions including insulin resistance. The roles of vitamin D in the regulation of metabolic modulations specifically involving insulin and reproduction processing are introduced. In addition, obesity appears to be closely associated with severity of PCOS. The present study is to evaluate the effect of body mass index (BMI) on vitamin D levels in follicular fluid and vitamin D receptor (VDR) expression levels in granulos cells...
July 2017: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/28667465/the-role-of-vitamin-d-in-male-fertility-a-focus-on-the-testis
#17
REVIEW
Cristina de Angelis, Mariano Galdiero, Claudia Pivonello, Francesco Garifalos, Davide Menafra, Federica Cariati, Ciro Salzano, Giacomo Galdiero, Mariangela Piscopo, Alfonso Vece, Annamaria Colao, Rosario Pivonello
In the last decade, vitamin D has emerged as a pleiotropic molecule with a multitude of autocrine, paracrine and endocrine functions, mediated by classical genomic as well as non-classical non-genomic actions, on multiple target organs and systems. The expression of vitamin D receptor and vitamin D metabolizing enzymes in male reproductive system, particularly in the testis, suggests the occurrence of vitamin D synthesis and regulation as well as function in the testis. The role of vitamin D in the modulation of testis functions, including hormone production and spermatogenesis, has been investigated in animals and humans...
July 1, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28665507/participation-of-hypothalamic-cb1-receptors-in-reproductive-axis-disruption-during-immune-challenge
#18
Pablo Nicolás Surkin, María Emilia Di Rosso, Fernando Correa, Juan Carlos Elverdin, Ana María Genaro, Andrea De Laurentiis, Javier Fernández-Solari
It is known that immune challenge inhibits reproductive function and that endocannabinoids (eCB) modulate sexual hormones. However, no studies have been performed to assess whether the endocannabinoid system mediates the inhibition of hormones that control reproduction due to immune system activation during systemic infections. For that reason, we evaluated the participation of the hypothalamic cannabinoid receptor CB1 on hypothalamic-pituitary-gonadal (HPG) axis activity in rats submitted to immune challenge...
June 30, 2017: Journal of Neuroendocrinology
https://www.readbyqxmd.com/read/28659174/crispr-cas9-targeting-of-gprc6a-suppresses-prostate-cancer-tumorigenesis-in-a-human-xenograft-model
#19
Ruisong Ye, Min Pi, John V Cox, Satoru K Nishimoto, L Darryl Quarles
BACKGROUND: GPRC6A is implicated in the pathogenesis of prostate cancer, but its role remains uncertain because of a purported tolerant gene variant created by substitution of a K..Y polymorphism in the 3rd intracellular loop (IL) that evolved in the majority of humans and replaces the ancestral RKLP present in 40% of humans of African descent and all other species. METHODS: We determined whether the K..Y polymorphism is present in human-derived prostate cancer cell lines by sequencing the region of the 3rd IL and assessed the cellular localization of a "humanized" mouse GPRC6A containing the K...
June 28, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28645930/genomic-and-non-genomic-effects-of-androgens-in-the-cardiovascular-system-clinical-implications
#20
REVIEW
Angela K Lucas-Herald, Rheure Alves-Lopes, Augusto C Montezano, S Faisal Ahmed, Rhian M Touyz
The principle steroidal androgens are testosterone and its metabolite 5α-dihydrotestosterone (DHT), which is converted from testosterone by the enzyme 5α-reductase. Through the classic pathway with androgens crossing the plasma membrane and binding to the androgen receptor (AR) or via mechanisms independent of the ligand-dependent transactivation function of nuclear receptors, testosterone induces genomic and non-genomic effects respectively. AR is widely distributed in several tissues, including vascular endothelial and smooth muscle cells...
July 1, 2017: Clinical Science (1979-)
keyword
keyword
28881
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"