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Steroid hormone

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https://www.readbyqxmd.com/read/29334211/curcumin-and-quercetin-ameliorated-cypermethrin-and-deltamethrin-induced-reproductive-system-impairment-in-male-wistar-rats-by-upregulating-the-activity-of-pituitary-gonadal-hormones-and-steroidogenic-enzymes
#1
Poonam Sharma, Irshad Aslam Khan, Rambir Singh
Background: Dietary antioxidants protect tissues and organs against insecticides/xenobiotic-induced damage. In the present study, we evaluated the results of exposure to synthetic pyrethroid insecticides, cypermethrin (Cyp) and deltamethrin (Del) and possible protective effects of curcumin and quercetin on reproductive system in male Wistar rats. MATERIALS AND METHODS: In this controlled experimental study, 42 male Wistar rats were randomly divided into 7 groups of 6 animals...
April 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29332424/salivary-metabolomics-profile-of-patients-with-recurrent-aphthous-ulcer-as-revealed-by-liquid-chromatography-tandem-mass-spectrometry
#2
Yantao Li, Daoming Wang, Chunwei Zeng, Yichen Liu, Guangyuan Huang, Zhanlong Mei
Objective We compared the salivary nontargeted metabolite profiles between patients with recurrent aphthous ulcer (RAU) and healthy individuals to investigate the metabolic alterations associated with RAU. Methods Saliva samples were collected from 45 patients with RAU and 49 healthy individuals, and the salivary metabolites were quantified using liquid chromatography-tandem mass spectrometry. The metabolomic profiles were then analyzed using multivariate and univariate statistical methods, and enrichment of the metabolites in various biological pathways was assessed...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29331929/sex-related-differential-response-to-dexamethasone-in-endocrine-and-immune-measures-in-depressed-in-patients-and-healthy-controls
#3
Carina Rampp, Andreas Eichelkraut, Johanna Best, Darina Czamara, Monika Rex-Haffner, Manfred Uhr, Elisabeth B Binder, Andreas Menke
Although sex differences in major depression have been reported repeatedly, the underlying mechanisms are still disputed. The rapidly changing gonadal steroid concentrations of the postpartum period or during menopause have been shown to be associated with depressive symptoms and to modulate the hypothalamic-pituitary-adrenal (HPA)-axis, which is implicated in depression. The sample comprised of 128 depressed in-patients (36.7% women) and 166 healthy controls (30.0% women). Blood was collected at baseline (at 6pm) and then 3 h as well as 21 h after ingestion of 1...
January 3, 2018: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/29330967/the-impact-of-bisphenol-s-on-bovine-granulosa-and-theca-cells
#4
K A Campen, M Lavallee, Cmh Combelles
Bisphenol S (BPS) is an endocrine-disrupting chemical with multiple potential mechanisms of action, including as an oestrogen receptor agonist. BPS is increasingly used in plastics and thermal receipts as a substitute for bisphenol A, which has been phased out due to concerns about human health implications. The ability of BPS to alter female reproductive function in mammals has not been widely studied, despite the importance of normal hormone signalling for female reproduction. The aim of this study was to investigate how BPS (in a wide range of doses, including very low doses) affects granulosa cell and theca cell steroid hormone production and cell viability in the bovine...
January 12, 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29330934/melatonin-inhibits-the-proliferation-of-breast-cancer-cells-induced-by-bisphenol-a-via-targeting-estrogen-receptor-related-pathways
#5
Tianjiao Wang, Bowen Liu, Yanan Guan, Miaomiao Gong, Weiying Zhang, Jinjin Pan, Yanan Liu, Rui Liang, Yuhui Yuan, Lihong Ye
BACKGROUND: Background: Bisphenol A (BPA) is an estrogen-like chemical widely contained in daily supplies. There is evidence that environmental exposure to BPA could contribute to the development of hormone-related cancers. As is reported in numerous studies, melatonin, an endogenous hormone secreted by the pineal gland, could markedly inhibit estrogen-induced proliferation of breast cancer (BC) cells. In this study, we intended to reveal the effects of melatonin on BPA-induced proliferation of estrogen receptor-positive BC cells...
January 13, 2018: Thoracic Cancer
https://www.readbyqxmd.com/read/29330226/mitotane-treatment-in-patients-with-metastatic-testicular-leydig-cell-tutor-associated-with-severe-androgen-excess
#6
Vasileios Chortis, Nicholas J Johal, Irina Bancos, Matthew Evans, Kassiani Skordilis, Peter Guest, Michael H Cullen, Emilio Porfiri, Wiebke Arlt
Mitotane (o,p'DDD) is established in the adjuvant and advanced stage treatment of adrenocortical carcinoma and counteracts both tumour growth and tumour-related steroid production. Both the adrenal glands and the gonads are steroidogenically active organs and share a common embryogenic origin. Here we describe the effects of mitotane in two patients with metastatic Leydig cell tumour (LCT) of the testes and associated severe androgen excess (serum testosterone 93 and 88 nmol/l, respectively; male reference range 7-27 nmol/L)...
January 12, 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29329570/exophthalmos-in-a-young-woman-with-no-graves-disease-a-case-report-of-igg4-related-orbitopathy
#7
Annamaria Erdei, Zita Steiber, Csaba Molnar, Ervin Berenyi, Endre V Nagy
BACKGROUND: Immunoglobulin G4-related disease (IgG4-rd) is characterized by lymphoplasmacytic infiltration and tissue fibrosis. Orbital manifestations of IgG4-rd may include unilateral or bilateral proptosis, cicatricial extraocular muscle myopathy, orbital inflammation and pain which may mimic ophthalmic Graves' disease. CASE PRESENTATION: A 25-year-old woman has been referred to the endocrinology clinic, 4 months after delivery, with suspected Graves' orbitopathy...
January 12, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29329424/brassinosteroids-regulate-pavement-cell-growth-by-mediating-bin2-induced-microtubule-stabilization
#8
Xiaolei Liu, Qin Yang, Yuan Wang, Linhai Wang, Ying Fu, Xuelu Wang
Brassinosteroids (BRs), a group of plant steroid hormones, play important roles in regulating plant development. The cytoskeleton also affects key developmental processes and a deficiency in BR biosynthesis or signaling leads to abnormal phenotypes similar to those of microtubule-defective mutants. However, how BRs regulate microtubule and cell morphology remains unknown. Here, using liquid chromatography-tandem mass spectrometry, we identified tubulin proteins that interact with Arabidopsis BRASSINOSTEROID INSENSITIVE2 (BIN2), a negative regulator of BR responses in plants...
January 10, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29328024/endometrial-polyps-in-women-of-reproductive-age-clinical-and-pathogene-tic-variations
#9
N Kosei, N Zakharenko, D Herman
The aim of the study was to study the relationship between the morphofunctional characteristics of the endometrium, hormonal homeostasis and microbiocenosis of the reproductive system in patients with endometrial polyps. The study involved 130 patients aged 18-35 years: 34 patients with endometrial polyps, 30 patients with micropolyps, 36 patients with endometrial polyps and micropolyps, 30 healthy women of the control group. Hysteroscopy was performed for women who had been suspected for endometrial polyps and who had infertility or repeated recurrent miscarriages...
December 2017: Georgian Medical News
https://www.readbyqxmd.com/read/29325023/the-extending-spectrum-of-npc1-related-human-disorders-from-niemann-pick-c1-disease-to-obesity
#10
Amel Lamri, Marie Pigeyre, William S Garver, David Meyre
The Niemann-Pick C1 (NPC1) protein regulates the transport of cholesterol and fatty acids from late endosomes / lysosomes and has a central role in maintaining lipid homeostasis. NPC1 loss-of-function mutations in humans cause NPC1 disease, a rare autosomal-recessive lipid-storage disorder characterized by progressive and lethal neurodegeneration, liver and lung failure, due to cholesterol infiltration. In humans, genome wide association studies (GWAS) and post-GWAS reports highlight the implication of common variants in NPC1 in adult-onset obesity, body fat mass, and type 2 diabetes...
January 9, 2018: Endocrine Reviews
https://www.readbyqxmd.com/read/29324978/effect-of-fish-meal-supplementation-on-luteal-sensitivity-to-intrauterine-infusions-of-prostaglandin-f2alpha-in-the-bovine
#11
Michele R Plewes, Jessica C Cedillo, Patrick D Burns, Peter E Graham, Jason E Bruemmer, Terry E Engle
Progesterone is a steroid hormone secreted from the corpus luteum (CL), which is responsible for establishment and maintenance of pregnancy. Early embryonic mortality often occurs due to inadequate regulation of uterine prostaglandin (PG) F2alpha secretion, leading to decrease in progesterone and loss of pregnancy. The objective of the current study was to determine the effects of fish meal supplementation on luteal sensitivity to intrauterine infusions of PGF2alpha. Non-lactating beef cows received corn gluten meal or fish meal supplementation for 60-days...
January 9, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29324824/assessing-the-links-among-environmental-contaminants-endocrinology-and-parasites-to-understand-amphibian-declines-in-montane-regions-of-costa-rica
#12
Christopher J Leary, Hannah F Ralicki, David Laurencio, Sarah Crocker-Buta, John H Malone
Amphibians inhabiting montane riparian zones in the Neotropics are particularly vulnerable to decline, but the reasons are poorly understood. Because environmental contaminants, endocrine disruption, and pathogens often figure prominently in amphibian declines it is imperative that we understand how these factors are potentially interrelated to affect montane populations. One possibility is that increased precipitation associated with global warming promotes the deposition of contaminants in montane regions...
2018: PloS One
https://www.readbyqxmd.com/read/29324286/digit-ratio-2d-4d-and-circulating-testosterone-oestradiol-and-progesterone-levels-across-the-menstrual-cycle
#13
Gareth Richards, Magdalena Klimek, Grazyna Jasienska, Urszula M Marcinkowska
BACKGROUND: Digit ratio (2D:4D) is used by researchers as an indicator of prenatal sex hormone exposure. Two previous studies have examined associations between 2D:4D and circulating sex steroid concentrations across the menstrual cycle in adult females. One reported that digit ratio correlated positively with oestradiol levels, whereas the other found no such effect; neither observed significant associations with progesterone. AIMS: To examine associations between 2D:4D, as well as asymmetry (i...
January 8, 2018: Early Human Development
https://www.readbyqxmd.com/read/29317254/revisiting-progesterone-receptor-pr-actions-in-breast-cancer-insights-into-pr-repressive-functions
#14
Cecilia J Proietti, Mauro E Cenciarini, Patricia V Elizalde
Progesterone receptor (PR) is a master regulator in female reproductive tissues that controls developmental processes and proliferation and differentiation during the reproductive cycle and pregnancy. PR also plays a role in progression of endocrine-dependent breast cancer. As a member of the nuclear receptor family of ligand-dependent transcription factors, the main action of PR is to regulate networks of target gene expression in response to binding its cognate steroid hormone, progesterone. Liganded-PR transcriptional activation has been thoroughly studied and associated mechanisms have been described while progesterone-mediated repression has remained less explored...
January 6, 2018: Steroids
https://www.readbyqxmd.com/read/29316826/the-role-of-metabolomic-markers-for-patients-with-infectious-diseases-implications-for-risk-stratification-and-therapeutic-modulation
#15
Seline Zurfluh, Thomas Baumgartner, Marc A Meier, Manuel Ottiger, Alaadin Voegeli, Luca Bernasconi, Peter Neyer, Beat Mueller, Philipp Schuetz
Metabolomics is a rapidly growing area of research. Metabolomic markers can provide information about the interaction of different organ systems, and thereby improve the understanding of physio-pathological processes, disease risk, prognosis and therapy responsiveness in a variety of diseases. Areas covered: In this narrative review of recent clinical studies investigating metabolomic markers in adult patients presenting with acute infectious disease, we mainly focused on patients with sepsis and lower respiratory tract infections...
January 9, 2018: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/29315692/comprehensive-review-of-cardiovascular-toxicity-of-drugs-and-related-agents
#16
REVIEW
Přemysl Mladěnka, Lenka Applová, Jiří Patočka, Vera Marisa Costa, Fernando Remiao, Jana Pourová, Aleš Mladěnka, Jana Karlíčková, Luděk Jahodář, Marie Vopršalová, Kurt J Varner, Martin Štěrba
Cardiovascular diseases are a leading cause of morbidity and mortality in most developed countries of the world. Pharmaceuticals, illicit drugs, and toxins can significantly contribute to the overall cardiovascular burden and thus deserve attention. The present article is a systematic overview of drugs that may induce distinct cardiovascular toxicity. The compounds are classified into agents that have significant effects on the heart, blood vessels, or both. The mechanism(s) of toxic action are discussed and treatment modalities are briefly mentioned in relevant cases...
January 5, 2018: Medicinal Research Reviews
https://www.readbyqxmd.com/read/29315590/brassinosteroids-regulate-glucosinolate-biosynthesis-in-arabidopsis-thaliana
#17
Ji Hyea Lee, Jeongyeo Lee, HyeRan Kim, Won Byoung Chae, Sun-Ju Kim, Yong Pyo Lim, Man-Ho Oh
Plants must constantly adjust their growth and defense responses to deal with the wide variety of stresses they encounter in their environment. Among phytohormones, brassinosteroids (BRs) are an important group of plant steroid hormones involved in numerous aspects of the plant lifecycle including growth, development, and responses to various stresses including insects. Here, we show that BRs regulate glucosinolate (GS) biosynthesis and function in insect herbivory. Preference tests and larval feeding experiments using the generalist herbivore, diamondback moth (Plutella xylostella), revealed that the larvae of this moth prefer to feed on Arabidopsis thaliana brassinosteroid insensitive 1 (bri1-5) plants than on wild-type Ws-2 or BRI1-Flag (bri1-5 background) transgenic plants, which leads an increase in larval weight...
January 5, 2018: Physiologia Plantarum
https://www.readbyqxmd.com/read/29315244/effects-of-sex-steroids-on-fish-leukocytes
#18
REVIEW
Elena Chaves-Pozo, Alfonsa García-Ayala, Isabel Cabas
In vertebrates, in addition to their classically reproductive functions, steroids regulate the immune system. This action is possible mainly due to the presence of steroid receptors in the different immune cell types. Much evidence suggests that the immune system of fish is vulnerable to xenosteroids, which are ubiquitous in the aquatic environment. In vivo and in vitro assays have amply demonstrated that oestrogens interfere with both the innate and the adaptive immune system of fish by regulating the main leukocyte activities and transcriptional genes...
January 9, 2018: Biology
https://www.readbyqxmd.com/read/29313974/genetic-variants-in-rora-and-dnmt1-associated-with-cutaneous-melanoma-survival
#19
Bo Li, Yanru Wang, Yinghui Xu, Hongliang Liu, Wendy Bloomer, Dakai Zhu, Christopher I Amos, Shenying Fang, Jeffrey E Lee, Xin Li, Jiali Han, Qingyi Wei
Cutaneous melanoma (CM) is considered as a steroid hormone-related malignancy. However, few studies have evaluated the roles of genetic variants encoding steroid hormone receptor genes and their related regulators (SHR-related genes) in CM-specific survival (CMSS). Here, we performed a pathway-based analysis to evaluate genetic variants of 191 SHR-related genes in 858 CMSS patients using a dataset from a genome-wide association study (GWAS) from The University of Texas MD Anderson Cancer Center (MDACC), and then validated the results in an additional dataset of 409 patients from the Harvard GWAS...
January 4, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29310516/assessment-of-squalene-eligibility-in-bettering-some-maternal-and-fetal-disorders-instigated-by-gamma-irradiation-of-rats-at-mid-gestation
#20
M F Ibrahim, N Abdelaziz
Squalene is an eminent vital part of the synthesis of steroid hormones in the body as well as the first specific intermediate in cholesterol biosynthesis that plays an essential role in normal embryogenesis. PURPOSE: The present work was designed to test the maternal and embryonic response to the modulating capacity of Squalene (0.4 mL/kg/day), when supplemented to rats from Day 1-18 of pregnancy, against the damaging consequences induced by maternal subjection to 3 Gy gamma irradiation on Day 10 post conception...
January 9, 2018: International Journal of Radiation Biology
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