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https://www.readbyqxmd.com/read/27900224/perioperative-severe-hypotension-in-a-patient-with-multiple-endocrine-neoplasia-type-iib-and-bilateral-adrenalectomies-time-to-review-the-evidence-for-stress-dose-steroids
#1
Jens Tan, Acsa Zavala, Katherine B Hagan, Antoinette Van Meter, Uduak Ursula Williams, Wei Zhang, Pascal Owusu-Agyemang
Multiple endocrine neoplasia type IIb (MEN IIb) is an endocrine disorder which can manifest with tumors such as pheochromocytomas and neuromas. We present the case of a patient with MEN IIb, after bilateral adrenalectomies, on maintenance steroid replacement, who underwent a neuroma resection and developed severe hypotension. There is persistent controversy regarding the general administration of perioperative "stress dose" steroids for patients with adrenal insufficiency. While the most recent literature suggests that stress dose steroids are unnecessary for secondary adrenal insufficiency, the rarer form of primary adrenal insufficiency always requires supplemental steroids, specifically hydrocortisone, when undergoing surgical procedures...
2016: Case Reports in Anesthesiology
https://www.readbyqxmd.com/read/27896593/biochemical-and-oxidative-stress-markers-in-the-liver-and-kidneys-of-rats-submitted-to-different-protocols-of-anabolic-steroids
#2
Guilherme Lopes Dornelles, Andressa Bueno, Juliana Sorraila de Oliveira, Aleksandro Schafer da Silva, Raqueli Teresinha França, Cássia Bagolin da Silva, Márcia Silveira Netto Machado, Letícia do Santos Petry, Fátima Husein Abdalla, Cibele Lima Lhamas, Cinthia Melazzo de Andrade
The objective of this study was to evaluate the effects of different protocols (P1, P2, and P3) of boldenone undecylenate (BU) and stanozolol (ST) on markers of liver and kidney function and variables of oxidative stress in these organs. For this, 54 male Wistar rats were divided into nine groups of six animals each. Each animal received intramuscularly 5.0 mg kg(-1) of BU or ST once a week for 4 weeks (P1); 2.5 mg kg(-1) of BU or ST once a week for 8 weeks (P2); and 1.25 mg kg(-1) of BU or ST once a week for 12 weeks (P3)...
November 28, 2016: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/27856527/role-of-glucocorticoid-receptor-and-pregnane-x-receptor-in-dexamethasone-induction-of-rat-hepatic-aryl-hydrocarbon-receptor-nuclear-translocator-and-nadph-cytochrome-p450-oxidoreductase
#3
Sarah R Hunter, Alex Vonk, Anne K Mullen Grey, David S Riddick
The aryl hydrocarbon receptor (AHR) nuclear translocator (ARNT), as the AHR's heterodimerization partner, and NADPH-cytochrome P450 oxidoreductase (POR), as the key electron donor for all microsomal P450s, are independent and indispensable components in the adaptive and toxic responses to polycyclic aromatic hydrocarbons. Expression of both ARNT and POR in rat liver is induced by dexamethasone (DEX), a synthetic glucocorticoid known to activate both the glucocorticoid receptor (GR) and the pregnane X receptor (PXR)...
November 16, 2016: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/27806574/ado-keto-reductase-regulation-by-the-nrf2-system-implications-for-stress-response-chemotherapy-drug-resistance-and-carcinogenesis
#4
Trevor M Penning
Human Aldo-Keto Reductases are NAD(P)H dependent oxidoreductases that convert aldehydes and ketones to primary and secondary alcohols for subsequent conjugation reactions and can be referred to as "phase 1" enzymes. Among all the human genes regulated by the Keap1/Nrf2 pathway they are consistently the most overexpressed in response to Nrf2 activators. While these enzymes play clear cytoprotective roles and deal effectively with carbonyl stress, their up-regulation by the Keap1/Nrf2 pathway also has a potential dark-side, which can lead to chemotherapeutic drug resistance, and the metabolic activation of lung carcinogens (e...
November 3, 2016: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/27803931/brassinolide-increases-potato-root-growth-in-vitro-in-a-dose-dependent-way-and-alleviates-salinity-stress
#5
Yueqing Hu, Shitou Xia, Yi Su, Huiqun Wang, Weigui Luo, Shengying Su, Langtao Xiao
Brassinosteroids (BRs) are steroidal phytohormones that regulate various physiological processes, such as root development and stress tolerance. In the present study, we showed that brassinolide (BL) affects potato root in vitro growth in a dose-dependent manner. Low BL concentrations (0.1 and 0.01 μg/L) promoted root elongation and lateral root development, whereas high BL concentrations (1-100 μg/L) inhibited root elongation. There was a significant (P < 0.05) positive correlation between root activity and BL concentrations within a range from 0...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27798546/evaluation-of-early-corticosteroid-therapy-in-management-of-pediatric-septic-shock-in-pediatric-intensive-care-patients-a-randomized-clinical-study
#6
Ahmed El-Nawawy, Doaa Khater, Heba Omar, Yasser Wali
BACKGROUND: Septic shock is a major healthcare problem. Adrenal insufficiency in children with septic shock is a recognized complication, yet is controversial regarding its management and effect on mortality. According to the current guidelines, children with risk factors for adrenal insufficiency should receive a stress dose of steroids in step 3 of treatment. This study aimed to evaluate and compare early corticosteroid therapy with the traditional use of steroids among pediatric septic shock patients...
October 25, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27776205/investigations-on-16-arylideno-steroids-as-a-new-class-of-neuroprotective-agents-for-the-treatment-of-alzheimer-s-and-parkinson-s-diseases
#7
Ranjit Singh, Ranju Bansal
Neuroinflammatory mechanisms mediated by activated glial and cytokines (TNF-α, IL-1β) might contribute neuronal degeneration leading to Alzheimer's (AD) and Parkinson's disease (PD). Lipopolysaccharide (LPS) is an inflammogen derived from the cell wall of Gram-negative bacteria, which promotes neuroinflammation and subsequent neurodegeneration. Dehydroepiandrosterone (DHEA) and testosterone have been reported as neuroprotective steroids useful for the treatment of various neurodegenerative disorders. In the present study, several 16-arylidene steroidal derivatives have been evaluated as neuroprotective agents in LPS-treated animal models...
October 24, 2016: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/27766109/adrenal-suppression-in-children-treated-with-swallowed-fluticasone-and-oral-viscous-budesonide-for-eosinophilic-esophagitis
#8
Alexandra Ahmet, Eric I Benchimol, Ellen B Goldbloom, Janice L Barkey
BACKGROUND: Adrenal suppression (AS), a glucocorticoid (GC) side effect associated with significant morbidity, is well described related to inhaled corticosteroid therapy for asthma. Swallowed topical glucocorticoid therapy is the main pharmacotherapy treatment for eosinophilic esophagitis (EoE) and therefore children with EoE are potentially at increased risk of AS. METHODS: In this prospective cohort study, we included children and youth <18 years diagnosed with EoE and treated with swallowed fluticasone or oral viscous budesonide for more than 1 month...
2016: Allergy, Asthma, and Clinical Immunology
https://www.readbyqxmd.com/read/27758889/trpa1-mediates-aromatase-inhibitor-evoked-pain-by-the-aromatase-substrate-androstenedione
#9
Francesco De Logu, Raquel Tonello, Serena Materazzi, Romina Nassini, Camilla Fusi, Elisabetta Coppi, Simone Li Puma, Ilaria M Marone, Laura R Sadofsky, Alyn H Morice, Tommaso Susini, Alessandro Terreni, Gloriano Moneti, Mariarosaria Di Tommaso, Pierangelo Geppetti, Silvia Benemei
Aromatase inhibitors (AI) induce painful musculoskeletal symptoms (AIMSS), which are dependent upon the pain transducing receptor TRPA1. However, as the AI concentrations required to engage TRPA1 in mice are higher than those found in the plasma of patients, we hypothesized that additional factors may cooperate to induce AIMSS. Here we report that the aromatase substrate androstenedione, unique among several steroid hormones, targeted TRPA1 in peptidergic primary sensory neurons in rodent and human cells expressing the native or recombinant channel...
December 1, 2016: Cancer Research
https://www.readbyqxmd.com/read/27746409/an-immortalized-steroidogenic-goat-granulosa-cell-line-as-a-model-system-to-study-the-effect-of-the-endoplasmic-reticulum-er-stress-response-on-steroidogenesis
#10
Diqi Yang, Lei Wang, Pengfei Lin, Tingting Jiang, Nan Wang, Fan Zhao, Huatao Chen, Keqiong Tang, Dong Zhou, Aihua Wang, Yaping Jin
With granulosa and theca cells, the ovaries are responsible for producing oocytes and secreting sex steroids such as estrogen and progesterone. Endoplasmic reticulum stress (ERS) plays an important role in follicle atresia and embryo implantation. In this study, goat granulosa cells were isolated from medium-sized (4-6 mm) healthy follicles. Primary granulosa cells were immortalized by transfection with human telomerase reverse transcriptase (hTERT) to establish a goat granulosa cell line (hTERT-GGCs). These hTERT-GGCs expressed hTERT and had relatively long telomeres at passage 50...
October 15, 2016: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/27723273/frequency-and-duration-of-adrenal-suppression-following-glucocorticoid-therapy-in-children-with-rheumatic-diseases
#11
Alexandra Ahmet, Vincent Brienza, Audrey Tran, Julie Lemieux, Mary Aglipay, Nick Barrowman, Ciaran Duffy, Johannes Roth, Roman Jurencak
OBJECTIVE: Adrenal suppression (AS), a glucocorticoid (GC) side effect with potentially significant morbidity, is poorly understood. The purpose of our study was to determine frequency, duration and predictors of AS following a gradual taper of GC in children with rheumatologic conditions. METHODS: Prospective observational cohort study was conducted. All patients ≤16 years ready to discontinue GC after >4weeks of therapy were included. Morning cortisol was tested 4 weeks after GC taper to physiologic doses and then repeatedly until normalization...
October 9, 2016: Arthritis Care & Research
https://www.readbyqxmd.com/read/27660932/systemic-lupus-erythematosus-does-not-increase-risk-of-adverse-events-in-the-first-6-months-after-total-knee-arthroplasty
#12
Arielle W Fein, Caroline A Figgie, Taylor R Dodds, Joshua Wright-Chisem, Michael L Parks, Lisa A Mandl, Edwin P Su, Jane E Salmon, David J Mayman, Yuo-Yu Lee, Mark P Figgie, Susan M Goodman
BACKGROUND: Increasing numbers of patients with systemic lupus erythematosus (SLE) are undergoing total knee arthroplasty (TKA). Whether postsurgical adverse events (AEs) are higher in patients with SLE than patients with osteoarthritis (OA) is unknown. OBJECTIVES: This study aims to compare AEs within 6 months of TKA. METHODS: Patients in a single institution's arthroplasty and SLE registries who underwent TKA from 2007 to 2014 were eligible...
October 2016: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/27631436/drug-synergism-of-proteasome-inhibitors-and-mitotane-by-complementary-activation-of-er-stress-in-adrenocortical-carcinoma-cells
#13
Matthias Kroiss, Silviu Sbiera, Sabine Kendl, Max Kurlbaum, Martin Fassnacht
Mitotane is the only drug approved for treatment of the orphan disease adrenocortical carcinoma (ACC) and was recently shown to be the first clinically used drug acting through endoplasmic reticulum (ER)-stress induced by toxic lipids. Since mitotane has limited clinical activity as monotherapy, we here study the potential of activating ER-stress through alternative pathways. The single reliable NCI-H295 cell culture model for ACC was used to study the impact MG132, bortezomib (BTZ) and carfilzomib (CFZ) on mRNA and protein expression of ER-stress markers, cell viability and steroid hormone secretion...
September 8, 2016: Hormones & Cancer
https://www.readbyqxmd.com/read/27627570/correlates-of-abusing-and-misusing-over-the-counter-pain-relievers-among-adult-population-of-wroc%C3%A5-aw-poland
#14
Monika Wójta-Kempa, Dominik M Krzyżanowski
BACKGROUND: Almost 90% of households in Poland buy medicines on their own initiative. The most popular OTC medicines bought by Polish consumers are painkillers and non-steroid-anti-inflammatory drugs. OBJECTIVES: The aim of this article was to recognize and describe the most important predictive factors of the abuse and misuse of over-the-counter pain relievers among adults in Wrocław (Poland). The groups of users were selected and described. Some examples of misuse were analyzed...
March 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/27611094/peroral-estradiol-is-sufficient-to-induce-carcinogen-induced-mammary-tumorigenesis-in-ovariectomized-rats-without-progesterone
#15
Hillary Stires, Mariana Saboya, Samantha P Globerman, Wendie S Cohick
A role for estrogens in breast cancer is widely accepted, however, recent evidence highlights that timing and exposure levels are important in determining whether they elicit harmful versus beneficial effects. The rat chemical carcinogen model has been widely used to study the effects of estrogens but conclusions on the levels that lead to tumor development and an absolute requirement for progesterone (P4) are lacking. A newer method of hormone administration mixes hormones with nut butter for peroral consumption allowing for a less stressful method of long-term administration with lower spikes in serum estradiol (E2) levels...
2016: PloS One
https://www.readbyqxmd.com/read/27591239/adrenocorticotropic-hormone-elicits-gonadotropin-secretion-in-premenopausal-women
#16
Jurate Aleknaviciute, Joke H M Tulen, Mirjam Timmermans, Yolanda B de Rijke, Elisabeth F C van Rossum, Frank H de Jong, Steven A Kushner
STUDY QUESTION: Does adrenocorticotropic hormone (ACTH) induce gonadotropin release in premenopausal women? SUMMARY ANSWER: Administration of ACTH stimulates gonadotropin release, most likely by stimulation of the production of cortisol, in premenopausal women. WHAT IS KNOWN ALREADY: In animal models, acute activation of the hypothalamic-pituitary-adrenal (HPA) axis has been shown to induce gonadotropin release in the presence of sufficiently high estrogen levels...
October 2016: Human Reproduction
https://www.readbyqxmd.com/read/27555148/triple-a-to-triple-s-from-diagnosis-to-anesthetic-management-of-allgrove-syndrome
#17
Mridul Dhar, Nimisha Verma, Ram Badan Singh, Vishal Krishna Pai
INTRODUCTION: Allgrove syndrome (AS) is a rare autosomal recessive disorder characterized by achalasia cardia, alacrimia, and adrenocorticotropic hormone-resistant adrenal insufficiency which is sometimes associated with autonomic dysfunction. It has also been referred to as the triple A syndrome in view of the cardinal symptoms described above. First described by Allgrove et al in 1978, the disorder usually presents mostly during the first decade of life. These patients have the threat of adrenal crisis, shock, and hypoglycemia and are usually on steroid supplementation...
September 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27532452/exposure-of-lactating-dairy-cows-to-acute-pre-ovulatory-heat-stress-affects-granulosa-cell-specific-gene-expression-profiles-in-dominant-follicles
#18
Jens Vanselow, Andreas Vernunft, Dirk Koczan, Marion Spitschak, Björn Kuhla
High environmental temperatures induce detrimental effects on various reproductive processes in cattle. According to the predicted global warming the number of days with unfavorable ambient temperatures will further increase. The objective of this study was to investigate effects of acute heat stress during the late pre-ovulatory phase on morphological, physiological and molecular parameters of dominant follicles in cycling cows during lactation. Eight German Holstein cows in established lactation were exposed to heat stress (28°C) or thermoneutral conditions (15°C) with pair-feeding for four days...
2016: PloS One
https://www.readbyqxmd.com/read/27489133/the-protective-effect-of-resveratrol-against-cytotoxicity-induced-by-mycotoxin-zearalenone
#19
Yaqiu Sang, Wenzhu Li, Genyi Zhang
Zearalenone (ZEA), a non-steroidal estrogenic mycotoxin, is widely present in cereals and agricultural products. The literature reports suggest that oxidative damage seems to be a key determinant of ZEA-induced toxicity, and the protective effect of resveratrol (RSV), an antioxidant phenolic compound, on ZEA-induced cytotoxicity to HEK293 cells was investigated. The experimental results showed that ZEA decreased cell viability in a dose dependent manner with an IC50 value of 80 μM, and induced an increase in intracellular reactive oxygen species (ROS) in HEK293 cells...
September 14, 2016: Food & Function
https://www.readbyqxmd.com/read/27485028/the-acute-and-temporary-modulation-of-period-genes-by-hydrocortisone-in-healthy-subjects
#20
Türkan Yurtsever, Thomas M Schilling, Monika Kölsch, Jonathan D Turner, Jobst Meyer, Hartmut Schächinger, Andrea B Schote
The physiological stress system and the circadian clock system communicate with each other at different signaling levels. The steroid hormone cortisol, the end-effector of the hypothalamus-pituitary-adrenal axis, is released in response to stress and acts as a mediator in circadian rhythms. We determined the effect of escalating cortisol doses on the expression of PERIOD genes (PER1, PER2 and PER3) in healthy subjects and analyzed whether the glucocorticoid receptor (GR) is involved in the cortisol-mediated PERIOD gene expression...
2016: Chronobiology International
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