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https://www.readbyqxmd.com/read/28533544/sex-specific-metabolic-profiles-of-androgens-and-its-main-binding-protein-shbg-in-a-middle-aged-population-without-diabetes
#1
Uwe Piontek, Henri Wallaschofski, Gabi Kastenmüller, Karsten Suhre, Henry Völzke, Kieu Trinh Do, Anna Artati, Matthias Nauck, Jerzy Adamski, Nele Friedrich, Maik Pietzner
The role of androgens in metabolism with respect to sex-specific disease associations is poorly understood. Therefore, we aimed to provide molecular signatures in plasma and urine of androgen action in a sex-specific manner using state-of-the-art metabolomics techniques. Our study population consisted of 430 men and 343 women, aged 20-80 years, who were recruited for the cross-sectional population-based Study of Health in Pomerania (SHIP-TREND), Germany. We used linear regression models to identify associations between testosterone, androstenedione and dehydroepiandrosterone-sulfate (DHEAS) as well as sex hormone-binding globulin and plasma or urine metabolites measured by mass spectrometry...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28532684/quantitative-determination-of-testosterone-levels-with-biolayer-interferometry
#2
Hao Zhang, Wei Li, Hong Luo, Guangming Xiong, Yuanhua Yu
Natural and synthetic steroid hormones are widely spread in the environment and are considered as pollutants due to their endocrine activities, even at low concentrations, which are harmful to human health. To detect steroid hormones in the environment, a novel biosensor system was developed based on the principle of biolayer interferometry. Detection is based on changes in the interference pattern of white light reflected from the surface of an optical fiber with bound biomolecules. Monitoring interactions between molecules does not require radioactive, enzymatic, or fluorescent labels...
May 19, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28528204/a-novel-pleiotropic-effect-of-aspirin-beneficial-regulation-of-pro-and-anti-inflammatory-mechanisms-in-microglial-cells
#3
Diana Kata, Imre Földesi, Liliana Z Feher, Laszlo Hackler, Laszlo G Puskas, Karoly Gulya
Aspirin, one of the most widely used non-steroidal anti-inflammatory drugs, has extensively studied effects on the cardiovascular system. To reveal further pleiotropic, beneficial effects of aspirin on a number of pro- and anti-inflammatory microglial mechanisms, we performed morphometric and functional studies relating to phagocytosis, pro- and anti-inflammatory cytokine production (IL-1β, tumor necrosis factor-α (TNF-α) and IL-10, respectively) and analyzed the expression of a number of inflammation-related genes, including those related to the above functions, in pure microglial cells...
May 17, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28525721/development-and-application-of-a-screening-method-of-absolute-qpcr-to-detect-the-abuse-of-sex-steroid-hormone-administration-in-male-bovine
#4
Laura Starvaggi Cuccuzza, Bartolomeo Biolatti, Sara Divari, Paola Pregel, Frine E Scaglione, Alessandra Sereno, Francesca T Cannizzo
A method for absolute quantification of regucalcin gene by quantitative PCR was developed to confirm that the decrease of regucalcin gene expression in the testis is a valid biomarker for detection of sex steroid hormone treatment in bovine husbandry. An external standard curve was developed with TaqMan technology. Based on in vivo experiments, specificity, sensitivity and criterion value of this potential biomarker were calculated by means of a ROC curve. Then, regucalcin gene expression was evaluated in beef and veal calves for human consumption...
May 19, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28521877/cyp21a2-intronic-variants-causing-21-hydroxylase-deficiency
#5
REVIEW
Paola Concolino, Roberta Rizza, Alessandra Costella, Cinzia Carrozza, Cecilia Zuppi, Ettore Capoluongo
Congenital adrenal hyperplasia (CAH) is an autosomal recessive disorder mainly caused by defects in the steroid 21-hydroxylase gene (CYP21A2). Most of CYP21A2 mutations result from intergenic recombinations between CYP21A2 and closely linked CYP21A1P pseudogene. Rare mutations not generated by gene conversion account for 5-10% of 21-hydroxylase deficiency alleles. Intronic variants represent only a little part of these but their effect on the protein is generally deleterious. The aim of this paper is to provide a comprehensive literary review regarding all intronic CYP21A2 pathological variants reported to date...
June 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28521115/anticonvulsant-profile-of-the-neuroactive-steroid-sge-516-in-animal-models
#6
Rebecca S Hammond, Alison L Althaus, Michael A Ackley, Carla Maciag, Gabriel Martinez Botella, Francesco G Salituro, Albert J Robichaud, James J Doherty
Despite the availability of multiple antiepileptic drugs (AED), failure to adequately control seizures is a challenge for approximately one third of epilepsy patients, and new therapies with a differentiated mechanism of action are needed. The neuroactive steroid, SGE-516, is a positive allosteric modulator of both gamma- and delta-containing GABAA receptors. This broad GABAA receptor activity differentiates neuroactive steroids like SGE-516 from benzodiazepines, a class of anticonvulsants which have been shown in vitro to selectively target gamma-subunit containing GABAA receptors...
May 7, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28521010/prospective-audit-of-a-pathway-for-in-patient-pain-management-of-chronic-abdominal-pain-a-novel-and-cost-effective-strategy
#7
Gopinath Niraj, Sanjay Chaudhri
Background.:  Unexplained abdominal pain is a common cause of hospital admission and utilizes significant resource. Current in-patient pain management of acute exacerbation of chronic abdominal pain is primarily directed at pharmacological and psychological management strategies in this group of complex patients. We adopted a novel approach that proved to be both clinically effective and cost-effective. Design.:  Adult patients admitted to a surgical ward with acute exacerbation of chronic abdominal pain referred to in-patient pain management were prospectively audited over a two-year period at a single tertiary centre...
May 17, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28516384/a-mutant-in-the-csdet2-gene-leads-to-a-systemic-brassinosteriod-deficiency-and-super-compact-phenotype-in-cucumber-cucumis-sativus-l
#8
Shanshan Hou, Huanhuan Niu, Qianyi Tao, Shenhao Wang, Zhenhui Gong, Sen Li, Yiqun Weng, Zheng Li
A novel dwarf cucumber mutant, scp-2, displays a typical BR biosynthesis-deficient phenotype, which is due to a mutation in CsDET2 for a steroid 5-alpha-reductase. Brassinosteroids (BRs) are a group of plant hormones that play important roles in the development of plant architecture, and extreme dwarfism is a typical outcome of BR-deficiency. Most cucumber (Cucumis sativus L.) varieties have an indeterminate growth habit, and dwarfism may have its value in manipulation of plant architecture and improve production in certain production systems...
May 17, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28506331/glucocorticoids-for-treating-paediatric-pulmonary-hypertension-a-novel-use-for-a-common-medication
#9
Manish Aggarwal, Ronald Mark Grady
Laboratory investigations have shown the role of inflammation in the pathogenesis of pulmonary hypertension and improvement after anti-inflammatory drugs. Despite these observations, reports on the use of steroids to treat pulmonary hypertension in humans are absent from the literature. In this article, we report the use of glucocorticoids in the treatment of two children with pulmonary hypertension, demonstrating its potential utility.
May 16, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28502591/cd8-cd28-cd8-cd28-t-cell-equilibrium-can-predict-the-active-stage-for-patients-with-inflammatory-bowel-disease
#10
Shi-Xue Dai, Hong-Xiang Gu, Qian-Yi Lin, Shao-Zhuo Huang, Tiao-Si Xing, Qing-Fang Zhang, Gang Wu, Min-Hua Chen, Wan-Er Tan, Hong-Jian Jian, Zhong-Wen Zheng, Tao Zhong, Min-Hai Zhang, Xing-Fang Cheng, Peng Huang, Guang-Jie Liao, Wei-Hong Sha
BACKGROUND/AIM: The balance of blood CD8(+)CD28(+)/CD8(+)CD28(-) T cells has been verified to be vital for patients with ulcerative colitis (UC), but their role in inflammatory bowel disease (IBD) remains unknown. This investigation aimed to evaluate the efficiency of the balance in predicting the active stage in IBD patients. METHODS: Fifty-three IBD subjects, including 31 UC and 22 Crohn's disease (CD) patients, were enrolled, and their peripheral blood CD8(+)CD28(+) and CD8(+)CD28(-) T cell levels were tested using flow cytometry...
May 10, 2017: Clinics and Research in Hepatology and Gastroenterology
https://www.readbyqxmd.com/read/28502586/novel-zinc-complexes-of-a-non-steroidal-anti-inflammatory-drug-niflumic-acid-structural-characterization-human-dna-and-albumin-binding-properties
#11
Romana Smolková, Vladimír Zeleňák, Lukáš Smolko, Juraj Kuchár, Miroslava Rabajdová, Michaela Ferenčáková, Mária Mareková
Three novel Zn(II) complexes of NSAID niflumic acid (Hnif) were prepared and studied, namely; [Zn(MeOH)4(nif)2] (1), [Zn(cyclam)(nif)2] (2) and [Zn(nif)2(tmen)] (3), where nif is deprotonated niflumic acid, cyclam is 1,4,8,11-Tetraazacyclotetradecane and tmen is N,N,N',N'-Tetramethylethylenediamine. The complexes have been characterized by infrared spectroscopy, elemental and thermal analysis and single-crystal X-ray structure analysis. All three complexes contain two deprotonated niflumato anions monodentately coordinated via carboxylato groups...
May 5, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28501574/androgen-production-in-pediatric-adrenocortical-tumors-may-occur-via-both-the-classic-and-or-the-alternative-backdoor-pathway
#12
Nesa Marti, Jana Malikova, José A Galván, Maude Aebischer, Marco Janner, Zdenek Sumnik, Barbora Obermannova, Genevieve Escher, Aurel Perren, Christa E Flück
Children with adrenocortical tumors (ACTs) often present with virilization due to high tumoral androgen production, with dihydrotestosterone (DHT) as most potent androgen. Recent work revealed two pathways for DHT biosynthesis, the classic and the backdoor pathway. Usage of alternate routes for DHT production has been reported in castration-resistant prostate cancer, CAH and PCOS. To assess whether the backdoor pathway may contribute to the virilization of pediatric ACTs, we investigated seven children suffering from androgen producing tumors using steroid profiling and immunohistochemical expression studies...
May 10, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28500305/nsaids-use-and-reduced-metastasis-in-cancer-patients-results-from-a-meta-analysis
#13
Xiaoping Zhao, Zhi Xu, Haoseng Li
This meta-analysis investigated the relationship between non-steroidal anti-inflammatory drugs (NSAIDs) and lymph node/distant metastasis. Relevant sources were identified from MEDLINE, EMBASE, PubMed, and Cochrane Library. Studies that reported the odds ratio (OR)/risk ratio (RR)/hazard ratio (HR) with 95% confidence intervals (CIs) for the associations of interested outcomes were included. Pooled effect estimates were obtained by using random- or fixed-effect model depending on the heterogeneity across these studies...
May 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28499916/effects-of-neonatal-and-adolescent-neuroactive-steroid-manipulation-on-locomotor-activity-induced-by-ethanol-in-male-wistar-rats
#14
Iris Bartolomé, Anna Llidó, Sònia Darbra, Marc Pallarès
Neonatal neuroactive steroids levels are crucial for brain development. Alterations of neonatal neuroactive steroids levels induce anxiolytic-like effects and improve exploration in novel environments in adulthood. These behavioural traits, i.e. sensation/novelty seeking, anxiety or impulsivity, are associated with vulnerability to drug use and abuse. Adolescence is also recognized as a particularly critical developmental phase to contribute to vulnerable phenotype. However, the influence of neuroactive steroids during development in the vulnerability to drug addiction has been poorly studied...
May 9, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28487389/normalization-of-testosterone-levels-after-testosterone-replacement-therapy-is-associated-with-decreased-incidence-of-atrial-fibrillation
#15
Rishi Sharma, Olurinde A Oni, Kamal Gupta, Mukut Sharma, Ram Sharma, Vikas Singh, Deepak Parashara, Surineni Kamalakar, Buddhadeb Dawn, Guoqing Chen, John A Ambrose, Rajat S Barua
BACKGROUND: Atrial fibrillation (AF) is the most common cardiac dysrhythmia associated with significant morbidity and mortality. Several small studies have reported that low serum total testosterone (TT) levels were associated with a higher incidence of AF. In contrast, it is also reported that anabolic steroid use is associated with an increase in the risk of AF. To date, no study has explored the effect of testosterone normalization on new incidence of AF after testosterone replacement therapy (TRT) in patients with low testosterone...
May 9, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28485529/exosomes-mediate-interepithelial-transfer-of-functional-p-glycoprotein-in-chronic-rhinosinusitis-with-nasal-polyps
#16
Angela L Nocera, Marcel M Miyake, Philip Seifert, Xue Han, Benjamin S Bleier
OBJECTIVE: P-glycoprotein (P-gp) drives type-2 helper T-cell inflammation in chronic rhinosinusitis with nasal polyps (CRSwNP) through unknown posttranslational mechanisms of overexpression. A recent randomized clinical trial demonstrated that inhibition of P-gp was as effective as oral steroids and biologics in treating CRSwNP. Exosomes are 30- to 150-nm vesicles capable of intercellular membrane protein transfer. The aims of this study were 1) to determine whether CRSwNP mucus exosomes are enriched with P-gp, and 2) whether exosomal P-gp can be functionally transferred to autologous epithelial cells as a putative mechanism for the proinflammatory overexpression of P-gp in CRSwNP...
May 9, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28485026/giant-cell-arteritis-beyond-temporal-artery-biopsy-and-steroids
#17
REVIEW
Jem V Ninan, Susan Lester, Catherine L Hill
Giant cell arteritis is the commonest primary vasculitis of the elderly. The acute complications of untreated Giant cell arteritis such as vision loss or occasionally stroke can be devastating. The diagnosis is however not altogether straightforward due to variable sensitivities of the temporal artery biopsy as a reference diagnostic test. In this review, we discuss the increasing role of imaging in the diagnosis of Giant cell arteritis. Glucocorticoid treatment is the backbone of therapy but it is associated with significant adverse effects...
May 9, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28483508/synthesis-of-novel-4-acylamino-modified-21e-benzylidene-steroidal-derivatives-and-their-cytotoxic-activities
#18
Ning-Juan Fan, Yang-Yang Han, Yuan-Feng Li, Jin-Ming Gao, Jiang-Jiang Tang
A series of 4'-acylamino modified Δ(1,4)-pregnadien-21E-benzylidene-3,20-dione derivatives (6a-v) was synthesized from the commercially available progesterone (1). These title compounds were evaluated for their toxicity against brine shrimp (Artemia salina) and cytotoxic activities against two human cancer cell lines (HeLa and MCF-7). The results revealed that compound 6f exhibited promising in vitro cytotoxic activity to the two cancer cell lines and the nature of acylamino functional group in the benzylidene moiety had a significant influence on cytotoxicity...
May 5, 2017: Steroids
https://www.readbyqxmd.com/read/28481622/cardiomyocytes-of-the-heart-and-pulmonary-veins-novel-contributors-to-asthma
#19
Stephen Sai Folmsbee, Cara J Gottardi
Recent genome-wide association studies have implicated both cardiac and pulmonary vein-related genes in the pathogenesis of asthma. Since cardiac cells are not present in lung airways or viewed to affect the immune system, interpretation of these findings in the context of more well-established contributors to asthma has remained challenging. However, cardiomyocytes are present in the lung, specifically along pulmonary veins, and recent murine models suggest that cardiac cells lining pulmonary veins may contribute to allergic airway disease...
May 8, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28476686/mutation-spectrum-of-genes-associated-with-steroid-resistant-nephrotic-syndrome-in-chinese-children
#20
Ying Wang, Xiqiang Dang, Qingnan He, Yan Zhen, Xiaoxie He, Zhuwen Yi, Kuichun Zhu
Approximately 20% of children with idiopathic nephrotic syndrome do not respond to steroid therapy. More than 30 genes have been identified as disease-causing genes for the steroid-resistant nephrotic syndrome (SRNS). Few reports were from the Chinese population. The coding regions of genes commonly associated with SRNS were analyzed to characterize the gene mutation spectrum in children with SRNS in central China. The first phase study involved 38 children with five genes (NPHS1, NPHS2, PLCE1, WT1, and TRPC6) by Sanger sequencing...
May 2, 2017: Gene
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