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https://www.readbyqxmd.com/read/28345956/modulation-of-steroidogenesis-by-vitamin-d3-in-granulosa-cells-of-the-mouse-model-of-polycystic-ovarian-syndrome
#1
Shabnam Bakhshalizadeh, Fardin Amidi, Ashraf Alleyassin, Masoud Soleimani, Reza Shirazi, Maryam Shabani Nashtaei
Polycystic ovarian syndrome (PCOS) is the most common endocrine disorder of women of reproductive age characterized by polycystic ovarian morphology, anovulation or oligomenorrhea, and hyperandrogenism. It is shown that disruption in the steroidogenesis pathway caused by excess androgen in PCOS is a critical element of abnormal folliculogenesis and failure in dominant follicle selection. Vitamin D plays an important role in the regulation of ovulatory dysfunction and can influence genes involved in steroidogenesis in granulosa cells...
March 27, 2017: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/28341876/consumption-of-green-tea-epigallocatechin-3-gallate-enhances-systemic-immune-response-antioxidative-capacity-and-hpa-axis-functions-in-aged-male-swiss-albino-mice
#2
Rohit Sharma, Anamika Sharma, Amita Kumari, Pankaj Markand Kulurkar, Rajneesh Raj, Ashu Gulati, Yogendra S Padwad
The present investigation assessed the potential of green tea phytochemical epigallocatechin-3-gallate (EGCG) in alleviating age-associated aberrations in immunity, hypothalamus-pituitary-adrenal (HPA) axis and redox homeostasis using 16 months old male Swiss albino mice. Four groups of animals (n = 6 per group) were supplemented with either aqueous EGCG at 25, 50 and 100 mg/kg/animal or vehicle control for 6 weeks. A concurrent analysis of CD4(+) and CD8(+) lymphocytes in splenocytes, differential leucocyte population, T cell differentiation markers in peripheral blood mononuclear cells (PBMCs), neutrophil functions, immunoglobulins profile in intestine, circulatory HPA axis hormonal levels as well as inflammatory and oxidative stress in the liver was performed...
March 24, 2017: Biogerontology
https://www.readbyqxmd.com/read/28335515/dehydroepiandrosterone-dhea-feeding-protects-liver-steatosis-in-obese-breast-cancer-rat-model
#3
Reza Hakkak, Andrea Bell, Soheila Korourian
Obesity is a major health problem in the US and globally. Obesity is associated with the risk of cardiovascular disease, type 2 diabetes, cancers, hyperlipidemia, and liver steatosis development. Dehydroepiandrosterone (DHEA) is a dietary supplement used as an anti-obesity supplement. Previously, we reported that DHEA feeding protects 7,12-dimethylbenz(a)anthracene (DMBA)-induced mammary tumors. The objectives of this study were to investigate the effects of obesity and DHEA feeding on liver steatosis, body weight gain, and serum DHEA, DHEA sulfate (DHEA-S), insulin-like growth factor-1 (IGF-1), and insulin-like growth factor binding protein-3 (IGFBP-3) levels...
March 20, 2017: Scientia Pharmaceutica
https://www.readbyqxmd.com/read/28328386/walking-training-and-cortisol-to-dhea-s-ratio-in-postmenopause-an-intervention-study
#4
Andrea Di Blasio, Pascal Izzicupo, Angela Di Baldassarre, Sabina Gallina, Ines Bucci, Cesidio Giuliani, Serena Di Santo, Angelo Di Iorio, Patrizio Ripari, Giorgio Napolitano
The literature indicates that the plasma cortisol-to-dihydroepiandrosterone-sulfate (DHEA-S) ratio is a marker of health status after menopause, when a decline in both estrogens and DHEA-S, and an increase in cortisol occur. An increase in the cortisol-to-DHEA-S ratio has been positively correlated with metabolic syndrome, all-cause mortality, cancer and other diseases. The aim of this study was to investigate the effects of a walking program on the plasma cortisol-to-DHEA-S ratio in postmenopausal women. Fifty-one postmenopausal women participated in a 13-week supervised walking program, in the metropolitan area of Pescara (Italy), from June to September 2013...
March 22, 2017: Women & Health
https://www.readbyqxmd.com/read/28326352/aging-lifestyle-factors-hormones-and-bone-health-in-singaporean-men
#5
Victor Hng Hang Goh, William George Hart
PURPOSE: The present study examined how age, bodyweight, body fat, regular exercise and some endocrine factors are associated with osteoporosis, spine bone mineral density (Sbmd) and femoral neck bone mineral density (Fnbmd) in Singaporean men. METHODS: Body composition and bone scans of lumbar spine at L2-L4 and hip were carried out with duel-energy X-ray absorptiometry (DXA). Anthropometric parameters were measured and demographic data, medical history and exercise schedule were collected via a questionnaire...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28326299/the-association-between-dehydroepiandrosterone-sulfate-dhea-s-and-bone-mineral-density-in-korean-men-and-women
#6
Seung-Gun Park, Sena Hwang, Jong-Suk Kim, Kyung-Chae Park, Yuri Kwon, Kyong-Chol Kim
BACKGROUND: The relationship between dehydroepiandrosterone sulfate (DHEA-S) and bone mineral density (BMD) is controversial. And findings of most studies that have investigated this relationship are restricted to postmenopausal women. In this study, we investigated the relationship between serum DHEA-S and BMD in both men and women. METHODS: This cross-sectional study evaluated a total of 294 healthy Korean participants through a medical examination program. And a subgroup of 154 participants was subjected to a longitudinal analysis...
February 2017: Journal of Bone Metabolism
https://www.readbyqxmd.com/read/28323976/protective-effects-of-fetal-zone-steroids-are-comparable-to-estradiol-in-hyperoxia-induced-cell-death-of-immature-glia
#7
Stephanie Hübner, Donna E Sunny, Christine Pöhlke, Johanna Ruhnau, Antje Vogelgesang, Bettina Reich, Matthias Heckmann
Impaired neurodevelopment in preterm infants is caused by prematurity itself; however, hypoxia/ischemia, inflammation, and hyperoxia contribute to the extent of impairment. Because preterm birth is accompanied by a dramatic decrease in 17β-estradiol (E2) and progesterone, preliminary clinical studies have been carried out to substitute these steroids in preterm infants; however, they failed to confirm significantly improved neurological outcomes. We therefore hypothesized that the persistently high postnatal production of fetal zone steroids (mainly dehydroepiandrosterone (DHEA)) until term could interfere with E2-mediated protection...
March 3, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323956/hyperhomocysteinemia-promotes-insulin-resistance-and-adipose-tissue-inflammation-in-pcos-mice-through-modulating-m2-macrophage-polarization-via-estrogen-suppression
#8
Xinyu Qi, Bochun Zhang, Yue Zhao, Rong Li, Hsun-Ming Chang, Yanli Pang, Jie Qiao
It has been shown that serum homocycteine (Hcy) levels are higher in women with polycystic ovary syndrome (PCOS). However, the specific role of hyperhomocycteinemia (HHcy) in the development of PCOS has never been reported. Adipose tissue inflammation is featured by the infiltration of macrophages that plays a critical role in the pathogenesis of glucose and insulin intolerance. In this study, C57BL/6 mice were treated with dehydroepiandrosterone (DHEA) and/or high methionine diet to induce PCOS and HHcy mice models...
March 15, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323951/assessing-energy-requirements-in-women-with-polycystic-ovary-syndrome-a-comparison-against-doubly-labeled-water
#9
Nicholas T Broskey, Monica C Klempel, L Anne Gilmore, Elizabeth F Sutton, Abby D Altazan, Jeffrey H Burton, Eric Ravussin, Leanne M Redman
Context: Weight loss is prescribed to offset the deleterious consequences of polycystic ovary syndrome (PCOS), but a successful intervention requires an accurate assessment of energy requirements. Objective: Describe energy requirements in women with PCOS and evaluate common prediction equations compared to doubly-labeled water (DLW). Design: Cross-sectional study. Setting: Academic research center. Participants: Twenty-eight weight-stable women with PCOS completed a 14-day DLW study along with measures of body composition, resting metabolic rate, and physical activity assessment by accelerometry...
March 8, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323042/comparison-of-intravaginal-0-5-prasterone-0-3mg-conjugated-estrogens-and-10%C3%AE-g-estradiol-on-estrogen-related-symptoms-of-vulvovaginal-atrophy
#10
REVIEW
David F Archer, Fernand Labrie, Marlene Montesino, Céline Martel
The objective is to compare the effect of intravaginal dehydroepiandrosterone (DHEA, prasterone), conjugated equine estrogens (CEE) and estradiol (E2) on moderate to severe dyspareunia and/or vaginal dryness. In a review of available data, independent prospective, randomized, double-blind and placebo-controlled Phase III 12-week clinical trials involved daily administration of 6.5mg (0.50%) prasterone, daily (21days on/7days off) 0.3mg CEE, twice weekly 0.3mg CEE or 10 μg E2 daily for 2 weeks followed by twice weekly for 10 weeks...
March 17, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28322765/hair-cortisol-and-dehydroepiandrosterone-concentrations-in-naturally-taenia-solium-infected-pigs-in-tanzania
#11
Chiara Trevisan, Marta Montillo, Alberto Prandi, Ernatus M Mkupasi, Helena A Ngowi, Maria V Johansen
The aim of this study was to measure hair cortisol and dehydroepiandrosterone (DHEA) concentrations in naturally Taenia solium infected and non-infected control pigs and assess the effect of an environmental change on the aforementioned parameters. Three hair patches were obtained from 13 T. solium infected and 15 non-infected controls sows, respectively corresponding to 3 time points (prior to, at and approximately two weeks after arrival at the research facility). Cortisol and DHEA were extracted using methanol and analysed by radio immune assay...
March 16, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28319688/attenuated-dhea-and-dhea-s-response-to-acute-psychosocial-stress-in-individuals-with-depressive-disorders
#12
Xiaoling Jiang, Wen Zhong, Haiyan An, Mingyu Fu, Yuanyuan Chen, Zhenggang Zhang, Zhongju Xiao
BACKGROUND: In recent years, a relationship between depression and basal dehydroepiandrosterone (DHEA) and dehydroepiandrosterone sulfate (DHEA-S) levels has frequently been suggested, but responses of these adrenal steroids to psychosocial stress have not been examined in individuals with depressive disorders. In this study, we examined salivary DHEA, DHEA-S, and cortisol/DHEA response to the Trier Social Stress Test (TSST) in individuals with depressive disorders and in healthy controls to discover whether the responses of DHEA and DHEA-S to acute psychosocial stress could be a more sensitive marker of HPA dysfunction in depressive disorders...
March 16, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28315270/sigma-1-receptor-agonists-and-their-clinical-implications-in-neuropsychiatric-disorders
#13
Yakup Albayrak, Kenji Hashimoto
Accumulating evidence suggests that sigma-1 receptors play a role in the pathophysiology of neuropsychiatric diseases, as well as in the mechanisms of some selective serotonin reuptake inhibitors (SSRIs). Among the SSRIs, the order of affinity for sigma-1 receptors is as follows: fluvoxamine > sertraline > fluoxetine > escitalopram > citalopram > paroxetine. Some SSRIs (e.g., fluvoxamine, fluoxetine and escitalopram) and other drugs (donepezil , ifenprodil , dehydroepiandeterone (DHEA)) potentiate nerve-growth factor (NGF)-induced neurite outgrowth in PC12 cells, and these effects could be antagonized by the selective sigma-1 receptor antagonist NE-100...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28300625/potential-prevention-by-oral-dhea-of-superficial-tears-in-elderly-atrophy-skin
#14
Harry W Daniell
No abstract text is available yet for this article.
March 11, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28300464/serum-visfatin-vascular-endothelial-growth-factor-and-matrix-metalloproteinase-9-in-women-with-polycystic-ovary-syndrome
#15
Kalliopi Dambala, Dimitrios Vavilis, Eleni Bili, Dimitrios G Goulis, Basil C Tarlatzis
AIM: To evaluate serum concentrations of visfatin, vascular endothelial growth factor (VEGF) and matrix metalloproteinase-9 (MMP-9) in women with polycystic ovary syndrome (PCOS) and to investigate their possible role as early endothelial markers in PCOS. METHODS: Forty-two women with PCOS and 42 controls, matched for age and weight, were included in the study. Serum concentrations of follicle-stimulating hormone (FSH), luteinizing hormone (LH), prolactin, total testosterone (tT), Δ4-androstenedione (Δ4A), dehydroepinadrosterone sulphate (DHEA-S), 17-OH-progesterone, sex hormone-binding protein (SHBG), thyroid-stimulating hormone (TSH), free thyroxine (fT4), visfatin, VEGF and MMP-9 were measured in all women; free androgen index (FAI) was calculated as well...
March 16, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28292621/serum-reproductive-hormone-levels-and-ultrasound-findings-in-female-offspring-after-intracytoplasmic-sperm-injection-first-results
#16
Florence Belva, Mathieu Roelants, Veerle Vloeberghs, Johan Schiettecatte, Jan Evenepoel, Maryse Bonduelle, Michel de Vos
OBJECTIVE: To compare reproductive hormone levels and antral follicle count in intracytoplasmic sperm injection (ICSI)-conceived offspring and peers born after spontaneous conception. DESIGN: Single-center study of the reproductive health at the age of 18-22 years in the worldwide oldest cohort of female ICSI offspring. SETTING: University hospital. PATIENT(S): A longitudinally followed cohort of singleton women (n = 71) conceived by means of ICSI because of male infertility and a cross-sectionally recruited group of spontaneously conceived women of the same age (n = 81)...
March 11, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28283954/genome-shuffling-of-colletotrichum-lini-for-improving-3%C3%AE-7%C3%AE-15%C3%AE-trihydroxy-5-androsten-17-one-production-from-dehydroepiandrosterone
#17
Jin Sun, Hui Li, Yu Ni, Xiaomei Zhang, Jinsong Shi, Zhenghong Xu
3β,7α,15α-Trihydroxy-5-androsten-17-one (7α,15α-diOH-DHEA) is a key intermediate of the novel oral contraceptive Yasmin. It can be catalyzed from dehydroepiandrosterone (DHEA) through Colletotrichum lini. Improvement of 7α,15α-diOH-DHEA production was performed through recursive protoplast fusion of C. lini ST in a genome shuffling format. 7α,15α-diOH-DHEA yield of the best performing recombinant C. lini ST-F307 reached 6.08 g/L from 10 g/L DHEA, and this was 94.9% higher than that of the initial C...
March 10, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28276724/circulating-androgens-and-shbg-during-the-normal-menstrual-cycle-in-two-ethnic-populations
#18
Taraneh Rezaii, Thomas P Gustafsson, Magnus Axelson, Leyla Zamani, Malin Ernberg, Angelica L Hirschberg, Kjell A M Carlström
The objective of this study was to study possible ethnic differences in steroid hormones and sex hormone-binding globulin (SHBG) during the menstrual cycle. Serum levels of the ovarian steroids estradiol (E2) and progesterone (P) and of follicle-stimulating hormone (FSH), luteinizing hormone (LH), SHBG, dehydroepiandrosterone (DHEA) and testosterone (T-ria) were all measured by immunoassay during the menstrual cycle in 15 Swedish and 11 West Asian regularly menstruating women. Testosterone (T-ms) was also measured by LC-MS/MS and so were 4-androstene-3,17-dione (A-4) and 17-alpha-hydroxyprogesterone (17-OHP)...
May 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28276592/low-serum-dheas-predicts-increased-fracture-risk-in-older-men-the-mros-sweden-study
#19
Claes Ohlsson, Maria Nethander, Andreas Kindmark, Östen Ljunggren, Mattias Lorentzon, Björn E Rosengren, Magnus K Karlsson, Dan Mellström, Liesbeth Vandenput
The adrenal-derived hormones dehydroepiandrosterone (DHEA) and its sulfate (DHEAS) are the most abundant circulating hormones and their levels decline substantially with age. DHEAS is considered an inactive precursor which is converted into androgens and estrogens via local metabolism in peripheral target tissues. The predictive value of serum DHEAS for fracture risk is unknown. The aim of this study was, therefore, to assess the associations between baseline DHEAS levels and incident fractures in a large cohort of older men...
March 9, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28274826/the-novel-dehydroepiandrosterone-dhea-derivative-bnn27-counteracts-delay-dependent-and-scopolamine-induced-recognition-memory-deficitsm-in-rats
#20
Nikolaos Pitsikas, Achille Gravanis
Experimental evidence indicates that the neurosteroids dehydroepiandrosterone (DHEA) and dehydroepiandrosterone sulphate (DHEAS) are involved in cognition. BNN27 is a novel 17C spiroepoxy-DHEA derivative, which devoid of steroidogenic activity. The neuroprotective effects of BNN27 have been recently reported. The present study was designed to investigate the effects of BNN27 on recognition memory in rats. For this purpose, the novel object task (NOT), a procedure assessing non-spatial recognition memory and the novel location task (NLT), a procedure evaluating spatial recognition memory were used...
March 6, 2017: Neurobiology of Learning and Memory
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