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adrenal estrogen

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https://www.readbyqxmd.com/read/28126832/effect-of-%C3%AE-agonist-on-the-dexamethasone-induced-expression-of-aromatase-by-the-human-monocyte-cells
#1
Masatada Watanabe, Shuji Ohno, Hiroshi Wachi
Emerging evidence suggests that sex steroids are important for human skin health. In particular, estrogen improves skin thickness, elasticity, and moisture of older women. The major source of circulating estrogen is the ovary; however, local estrogen synthesis and secretion have important roles in, for example, bone metabolism and breast cancer development. We hypothesized that infiltrated peripheral monocytes are one of the sources of estrogen in skin tissues. We also hypothesized that, during atopic dermatitis under stress, a decline in the hypothalamus-pituitary-adrenal axis (HPA) and facilitation of the (hypothalamus)-sympathetic-adrenomedullary system (SAM) attenuates estrogen secretion from monocytes...
January 26, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28098598/science-of-intracrinology-in-postmenopausal-women
#2
Fernand Labrie, Alain Bélanger, Georges Pelletier, Céline Martel, David F Archer, Wulf H Utian
OBJECTIVE: To illustrate the marked differences between classical endocrinology that distributes hormones to all tissues of the body through the bloodstream and the science of intracrinology, whereby each cell of each peripheral tissue makes a small and appropriate amount of estrogens and androgens from the inactive precursor dehydroepiandrosterone (DHEA), DHEA being mainly of adrenal origin. Because only the inactivated sex steroids are released in the blood, influence in the other tissues is avoided...
January 16, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28081469/anti-osteoporotic-effects-of-an-antidepressant-tianeptine-on-ovariectomized-rats
#3
Osama A Alkhamees, Abdulaziz S Al-Roujayee, Hatem M Abuohashish, Mohammed M Ahmed
In the current investigation, the potential alleviating effects of tianeptine against bone loss induced in ovariectomized (OVX) rats was determined. Two weeks following a bilateral ovariectomy operation, tianeptine treatment (12.5 and 25mg/kg/twice/d) was initiated and continued for twenty-eight consecutive days. Changes in serum and urinary bone turnover biomarkers and osteoclastogenesis-inducing factors were estimated. The femoral bone mineral content was estimated using inductively-coupled-plasma mass spectrometry...
March 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28061972/estrogen-receptors-modulation-of-anxiety-like-behavior
#4
A P Borrow, R J Handa
Estrogens exert profound effects on the expression of anxiety in humans and rodents; however, the directionality of these effects varies considerably within both clinical and preclinical literature. It is believed that discrepancies regarding the nature of estrogens' effects on anxiety are attributable to the differential effects of specific estrogen receptor (ER) subtypes. In this chapter we will discuss the relative impact on anxiety and anxiety-like behavior of each of the three main ERs: ERα, which has a generally anxiogenic effect, ERβ, which has a generally anxiolytic effect, and the G-protein-coupled ER known as GPR30, which has been found to both increase and decrease anxiety-like behavior...
2017: Vitamins and Hormones
https://www.readbyqxmd.com/read/28045098/effects-of-elevated-%C3%AE-estradiol-levels-on-the-functional-morphology-of-the-testis-new-insights
#5
Myles Leavy, Matthias Trottmann, Bernhard Liedl, Sven Reese, Christian Stief, Benjamin Freitag, John Baugh, Giulio Spagnoli, Sabine Kölle
Elevated estradiol levels are correlated with male infertility. Causes of hyperestrogenism include diseases of the adrenal cortex, testis or medications affecting the hypothalamus-pituitary-gonadal axis. The aim of our study was to elucidate the effects of estradiol treatment on testicular cellular morphology and function, with reference to the treatment regimen received. Testes samples (n = 9) were obtained post-orchiectomy from male-to-female transsexuals within the age range of 26-52 years. Each patient had a minimum of 1-6 years estradiol treatment...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28024269/aromatase-changes-in-depression-a-postmortem-and-animal-experimental-study
#6
Juan-Li Wu, Yang He, Radovan Hrubý, Rawien Balesar, Yang-Jian Qi, Lei Guo, Zhong Ren, Qiong-Bin Zhu, Man-Li Huang, Dick F Swaab, Ai-Min Bao
A hyperactive hypothalamo-pituitary-adrenal (HPA) axis is a prominent feature in depression. It has been shown that androgens inhibit HPA activity and that estrogens stimulate it. We have therefore investigated, in human postmortem hypothalamus, whether depression features an increase in aromatase, which is the rate-limiting enzyme for the conversion of androgens to estrogens. In addition, we have tested the effect of an aromatase inhibitor on depression-like symptoms in a frequently used animal model for depression...
November 30, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28013353/changes-in-stress-stimulated-allopregnanolone-levels-induced-by-neonatal-estradiol-treatment-are-associated-with-enhanced-dopamine-release-in-adult-female-rats-reversal-by-progesterone-administration
#7
Patrizia Porcu, Valeria Lallai, Andrea Locci, Sandro Catzeddu, Valeria Serra, Maria Giuseppina Pisu, Mariangela Serra, Laura Dazzi, Alessandra Concas
BACKGROUND: Allopregnanolone plays a role in the stress response and homeostasis. Alterations in the estrogen milieu during the perinatal period influence brain development in a manner that persists into adulthood. Accordingly, we showed that a single administration of estradiol benzoate (EB) on the day of birth decreases brain allopregnanolone concentrations in adult female rats. OBJECTIVE: We examined whether the persistent decrease in allopregnanolone concentrations, induced by neonatal EB treatment, might affect sensitivity to stress during adulthood...
December 24, 2016: Psychopharmacology
https://www.readbyqxmd.com/read/27959413/17%C3%AE-%C3%A2-hydroxylase-17-20%C3%A2-lyase-deficiency-in-congenital-adrenal-hyperplasia-a-case-report
#8
Simiao Xu, Shuhong Hu, Xuefeng Yu, Muxun Zhang, Yan Yang
Congenital adrenal hyperplasia (CAH) is a rare autosomal recessive disorder caused by mutations in the cytochrome P450 family 17 subfamily A member 1 (CYP17A1) gene located on chromosome 10q24.3, which leads to a deficiency in 17α‑hydroxylase/17,20‑lyase. The disorder is characterized by low blood levels of estrogens, androgens and cortisol, which leads to a compensatory increase in adrenocorticotropic hormone levels that stimulate the production of mineralocorticoid precursors. This subsequently leads to hypertension, hypokalemia, primary amenorrhea and sexual infantilism...
January 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27942913/genomic-and-rapid-effects-of-aldosterone-what-we-know-and-do-not-know-thus-far
#9
Milla Marques Hermidorff, Leonardo Vinícius Monteiro de Assis, Mauro César Isoldi
Aldosterone is the most known mineralocorticoid hormone synthesized by the adrenal cortex. The genomic pathway displayed by aldosterone is attributed to the mineralocorticoid receptor (MR) signaling. Even though the rapid effects displayed by aldosterone are long known, our knowledge regarding the receptor responsible for such event is still poor. It is intense that the debate whether the MR or another receptor-the "unknown receptor"-is the receptor responsible for the rapid effects of aldosterone. Recently, G protein-coupled estrogen receptor-1 (GPER-1) was elegantly shown to mediate some aldosterone-induced rapid effects in several tissues, a fact that strongly places GPER-1 as the unknown receptor...
December 12, 2016: Heart Failure Reviews
https://www.readbyqxmd.com/read/27936531/endocrinology-update-hirsutism
#10
Joel J Heidelbaugh
Hirsutism is defined as excessive terminal hair growth, such as coarse sexual or secondary hair, that typically appears in a male growth pattern in androgen-dependent areas of the female body. It can occur in men and women. Common etiologies include polycystic ovary syndrome, idiopathic hyperandrogenemia, idiopathic hirsutism, adrenal hyperplasia due to 21-hydroxylase deficiency, androgen-secreting tumors, iatrogenic hirsutism, acromegaly, Cushing syndrome, hyperprolactinemia, and hypo- or hyperthyroidism. Diagnostic guidelines are predominantly aimed at premenopausal women but an appropriate evaluation for underlying endocrinopathies in postmenopausal women and men may be required...
December 2016: FP Essentials
https://www.readbyqxmd.com/read/27917104/thirty-eight-year-follow-up-of-two-sibling-lipoid-congenital-adrenal-hyperplasia-patients-due-to-homozygous-steroidogenic-acute-regulatory-stard1-protein-mutation-molecular-structure-and-modeling-of-the-stard1-l275p-mutation
#11
Khalil Khoury, Elie Barbar, Youssef Ainmelk, Annie Ouellet, Pierre Lavigne, Jean-Guy LeHoux
Objective: Review the impact of StAR (STARD1) mutations on steroidogenesis and fertility in LCAH patients. Examine the endocrine mechanisms underlying the pathology of the disorder and the appropriate therapy for promoting fertility and pregnancies. Design: Published data in the literature and a detailed 38-year follow-up of two sibling LCAH patients. Molecular structure and modeling of the STARD1 L275P mutation. Setting: University hospital. Patients: Patient A (46,XY female phenotype) and patient B (46,XX female) with LCAH bearing the L275P mutation in STARD1...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27908659/public-exposure-and-number-of-conspecifics-have-no-influence-on-ovarian-and-adrenal-activity-in-the-cheetah-acinonyx-jubatus
#12
Diana C Koester, David E Wildt, Janine L Brown, Karen Meeks, Adrienne E Crosier
Cheetahs in managed zoological collections do not reproduce efficiently, a problem that may be related to environmental/management stressors. In this study, we examined 17 adult female cheetahs to determine the influence of two environmental factors, (1) being housed on- or off-exhibit and (2) number of adult conspecifics (males and/or females) in nearby enclosures, on profiles and concentrations of ovarian and adrenal hormones. Secondarily, we assessed a subset of group-housed siblings (n=5 females in groups of 2 or 3) for effects of long-term cohabitation...
March 1, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27853336/seventeen-alpha-hydroxylase-deficiency-associated-with-absent-gonads-and-myelolipoma-a-case-report-and-review-of-literature
#13
Mahmood Soveid, Ghanbar Ali Rais-Jalali
Congenital adrenal hyperplasia comprises a group of disorders resulting from defects in enzymes required for the synthesis of cortisol. The clinical presentation depends on the specific enzyme defect. We report a rare case of congenital adrenal hyperplasia due to 17 alpha-hydroxylase deficiency. A 26-year-old female patient referred with hypertension and hypokalemia. She also had primary amenorrhea and lack of sexual development. The karyotype was 46, XY. Hormonal evaluation showed low serum levels of all steroid hormones, requiring alpha-hydroxylation, which included cortisol, 17 alpha-hydroxy progesterone, dehydroepiandrosterone sulfate, estradiol, and testosterone...
November 2016: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/27827529/a-design-thinking-approach-to-primary-ovarian-insufficiency
#14
Lisa A Martin, Alison G Porter, Vincent A Pelligrini, Peter F Schnatz, Xuezhi Jiang, Nicole Kleinstreuer, Janet E Hall, Sarah Verbiest, Jill Olmstead, Ryan Fair, Alberto Falorni, Luca Persani, Aleksandar Rajkovic, Khanjan Mehta, Lawrence M Nelson
Most clinicians are not prepared to provide integrated personal care to address all the clinical needs of women with primary ovarian insufficiency. Design thinking is an engineering methodology used to develop and evaluate novel concepts for systems operation. Here we articulate the need for a seamlessly integrated mobile health system to support genomic research as well as patient care. We also review the pathophysiology and management of primary ovarian insufficiency. Molecular understanding regarding the pathogenesis is essential to developing strategies for prevention, earlier diagnosis, and appropriate management of the disorder...
March 2017: Panminerva Medica
https://www.readbyqxmd.com/read/27793723/association-of-estradiol-on-expression-of-melanocortin-receptors-and-their-accessory-proteins-in-the-liver-of-chicken-gallus-gallus
#15
Junxiao Ren, Yanmin Li, Naiyi Xu, Hong Li, Cuicui Li, Ruili Han, Yanbin Wang, Zhuanjian Li, Xiangtao Kang, Xiaojun Liu, Yadong Tian
The melanocortin receptor accessory proteins (MRAP and MRAP2) are small single-pass transmembrane proteins that regulate the biological functions of the melanocortin receptor (MCR) family. MCRs comprise five receptors (MC1R-MC5R) with diverse physiological roles in mammals. Five MCR members and two MRAPs were also predicted in the chicken (Gallus gallus) genome. However, little is known about their expression, regulation and biological functions. In this study, we cloned the MRAP and MRAP2 genes. Sequencing analysis revealed that the functional domains of MRAP and MRAP2 were conserved among species, suggesting that the physiological roles of chicken MRAP and MRAP2 could be similar to their mammalian counterparts...
January 1, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/27779913/estrogen-suppresses-interaction-of-melanocortin-2-receptor-and-its-accessory-protein-in-the-primate-fetal-adrenal-cortex
#16
Jeffery S Babischkin, Graham W Aberdeen, Gerald J Pepe, Eugene D Albrecht
We have shown that fetal adrenal fetal zone (FZ) volume and serum dehydroepiandrosterone sulfate (DHAS) levels were increased, whereas definitive and transitional zone (DZ/TZ) volume was unaltered, in baboons in which estrogen levels were suppressed by the administration of the aromatase inhibitor letrozole. The interaction of the melanocortin 2 receptor (MC2R) with its accessory protein (MRAP) is essential for trafficking MC2R to the adrenal cell surface for binding to ACTH. The present study determined whether the estrogen-dependent regulation of fetal adrenocortical development is mediated by ACTH and/or expression/interaction of MC2R and MRAP...
December 2016: Endocrinology
https://www.readbyqxmd.com/read/27773476/dead-or-alive-predicting-fetal-loss-in-japanese-macaques-macaca-fuscata-by-fecal-metabolites
#17
Rafaela S C Takeshita, Michael A Huffman, Keiko Mouri, Keiko Shimizu, Fred B Bercovitch
Dehydroepiandrosterone-sulfate (DHEAS) is the main steroid product of the primate fetal adrenal during mid to late gestation and it plays a major role in providing estrogens needed for parturition. We tested the hypothesis that this hormone can indicate fetal health status and attempted to use fecal DHEAS (fDHEAS) to predict pregnancy outcome in Japanese macaques. The subjects were 16 adult females and 3 neonatal Japanese macaques living in captivity at the Primate Research Institute, Kyoto University. We classified females that gave birth to healthy infants as successful and females that gave birth to dead infants as stillbirth (late fetal loss) and miscarriage (early fetal loss)...
December 2016: Animal Reproduction Science
https://www.readbyqxmd.com/read/27741188/disorders-of-sexual-development-in-adult-women
#18
Veronica Gomez-Lobo, Anne-Marie Amies Oelschlager
Disorders (differences) of sexual development encompass a variety of conditions with atypical development of chromosomal, gonadal, or anatomic sex. Three of the most common differences of sex development conditions include congenital adrenal hyperplasia, complete androgen insensitivity, and Turner syndrome. Obstetrician-gynecologists who care for affected individuals in their practice must be familiar with the genetic, endocrine, and anatomic considerations of the most common conditions to provide optimal care...
November 2016: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27649611/hypericum-perforatum-l-treatment-restored-bone-mass-changes-in-swimming-stressed-rats
#19
Nikos Seferos, Loukas Petrokokkinos, Antonia Kotsiou, George Rallis, Christine Tesseromatis
UNLABELLED: Stress, via corticosteroids release, influences bone mass density. Hypericum perforatum (Hp) a traditional remedy possess antidepressive activity (serotonin reuptake inhibitor) and wound healing properties. Hp preparation contains mainly hypericin, hyperforin, hyperoside and flavonoids exerting oestrogen-mimetic effect. Cold swimming represents an experimental model of stress associating mental strain and corporal exhaustion. OBJECTIVES: This study investigates the Hp effect on femur and mandible bone mass changes in rats under cold forced swimming procedure...
2016: Stomatologija
https://www.readbyqxmd.com/read/27634643/executive-functioning-in-children-with-congenital-adrenal-hyperplasia
#20
A Monica Agoston, Maria Teresa Gonzalez-Bolanos, Margaret Semrud-Clikeman, Nancy Vanderburg, Kyriakie Sarafoglou
Congenital adrenal hyperplasia (CAH) due to 21-hydroxylase deficiency is a disorder characterized by impaired cortisol synthesis leading to excessive production of adrenal androgens. Prenatal and postnatal exposure to excess androgens may increase neural vulnerability to insult and affect cognitive functions, particularly dopamine-dependent neural circuits responsible for executive functioning (EF). Our study aimed to investigate relationship between more pronounced androgen exposure and EF-related behaviors in children with CAH, as well as sex differences in these associations...
January 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
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