keyword
MENU ▼
Read by QxMD icon Read
search

Glucocorticoid resistance

keyword
https://www.readbyqxmd.com/read/28343139/oxytocin-in-corticosterone-induced-chronic-stress-model-focus-on-adrenal-gland-function
#1
Dušanka Stanić, Bosiljka Plećaš-Solarović, Duško Mirković, Predrag Jovanović, Slađana Dronjak, Bojan Marković, Tea Đorđević, Svetlana Ignjatović, Vesna Pešić
Chronic stress conditions can lead to considerable and extensible changes in physiological and psychological performances, and in emergence of risk for various somatic diseases. On the other hand, the neuropeptide oxytocin is reported to increase the resistance of the organism to stress and modulate activity of autonomic nervous system. Chronic corticosterone administration is used as a rat model for a state observed in terms of chronic stress exposure, when negative feedback mechanism of hypothalamus-pituitary-adrenal axis activity is disrupted...
March 10, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28333238/clustering-of-pcos-like-traits-in-naturally-hyperandrogenic-female-rhesus-monkeys
#2
D H Abbott, B H Rayome, D A Dumesic, K C Lewis, A K Edwards, K Wallen, M E Wilson, S E Appt, J E Levine
STUDY QUESTION: Do naturally occurring, hyperandrogenic (≥1 SD of population mean testosterone, T) female rhesus monkeys exhibit traits typical of women with polycystic ovary syndrome (PCOS)? SUMMARY ANSWER: Hyperandrogenic female monkeys exhibited significantly increased serum levels of androstenedione (A4), 17-hydroxyprogesterone (17-OHP), estradiol (E2), LH, antimullerian hormone (AMH), cortisol, 11-deoxycortisol and corticosterone, as well as increased uterine endometrial thickness and evidence of reduced fertility, all traits associated with PCOS...
March 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28330327/role-of-gnb3-net-kcnj11-tcf7l2-and-grl-genes-single-nucleotide-polymorphism-in-the-risk-prediction-of-type-2-diabetes-mellitus
#3
REVIEW
Saliha Rizvi, Syed Tasleem Raza, Qamar Rahman, Farzana Mahdi
Type 2 diabetes (T2DM) is a polygenic metabolic disorder characterized by hyperglycemia occurring as a result of impaired insulin secretion or insulin resistance. Various environmental and genetic factors interact and increase the risk of T2DM and its complications. Among the various genetic factors associated with T2DM, single nucleotide polymorphism in different candidate genes have been studied intensively and the resulting genetic variants have been found to have either positive or negative association with T2DM thereby increasing or decreasing the risk of T2DM, respectively...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28324010/separating-the-anti-inflammatory-and-diabetogenic-effects-of-glucocorticoids-through-lxr%C3%AE-antagonism
#4
Rucha Patel, Lilia Magomedova, Ricky Tsai, Stéphane Angers, Arturo Orellana, Carolyn L Cummins
Synthetic glucocorticoids (GCs) including dexamethasone (DEX) are powerful anti-inflammatory drugs. Long-term use of GCs, however, can result in metabolic side effects such as hyperglycemia, hepatosteatosis, and insulin resistance. The glucocorticoid receptor (GR) and liver X receptors (LXRα and LXRβ) regulate overlapping genes involved in gluconeogenesis and inflammation. We have previously shown that Lxrβ-/- mice are resistant to the diabetogenic effects of DEX, but still sensitive to its immunosuppressive actions...
January 27, 2017: Endocrinology
https://www.readbyqxmd.com/read/28321320/calcineurin-inhibitors-in-the-treatment-of-primary-focal-segmental-glomerulosclerosis-a-systematic-review-and-meta-analysis-of-the-literature
#5
REVIEW
Louis-Philippe Laurin, Patrick H Nachman, Bethany J Foster
PURPOSE OF REVIEW: Primary focal segmental glomerulosclerosis (FSGS) is the most common cause of nephrotic syndrome in adults. Glucocorticoids have been evaluated in the treatment of primary FSGS in numerous retrospective studies. Evidence suggesting a role for including calcineurin inhibitors (CNIs) in early therapy remains limited. The aim of this study was to systematically review the literature examining the efficacy of CNIs in the treatment of primary FSGS both as first-line therapy and as an adjunctive agent in steroid-resistant patients, with respect to remission in proteinuria and renal survival...
2017: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/28320277/mechanisms-of-brain-glucocorticoid-resistance-in-stress-induced-psychopathologies
#6
REVIEW
V M Merkulov, T I Merkulova, N P Bondar
Exposure to stress activates the hypothalamic-pituitary-adrenal axis and leads to increased levels of glucocorticoid (GC) hormones. Prolonged elevation of GC levels causes neuronal dysfunction, decreases the density of synapses, and impairs neuronal plasticity. Decreased sensitivity to glucocorticoids (glucocorticoid resistance) that develops as a result of chronic stress is one of the characteristic features of stress-induced psychopathologies. In this article, we reviewed the published data on proposed molecular mechanisms that contribute to the development of glucocorticoid resistance in brain, including changes in the expression of the glucocorticoid receptor (GR) gene, biosynthesis of GR isoforms, and GR posttranslational modifications...
March 2017: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28301846/programming-of-the-hypothalamus-pituitary-adrenal-axis-by-very-preterm-birth
#7
Martijn J J Finken, Bibian van der Voorn, Jonneke J Hollanders, Charlotte A Ruys, Marita de Waard, Johannes B van Goudoever, Joost Rotteveel
BACKGROUND: Many very preterm (i.e., <32 weeks of gestation) newborns fail to mount an adequate adrenocortical response to stress or illness, termed relative adrenal insufficiency. Conversely, later in life these infants show features of increased glucocorticoid bioactivity, such as abdominal adiposity, insulin resistance, raised blood pressure, shorter stature and internalizing problem behavior. SUMMARY: Studies suggested that very preterm newborns have impairments along multiple levels of the hypothalamus-pituitary-adrenal (HPA) axis...
March 17, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28297812/-the-regulative-effects-of-aspergillus-fumigatus-on-expression-of-glucocorticoid-receptor-in-asthmatic-rats
#8
X Zhou, Y J Dang, G F Wang, X Q Jin
Objective: To study the regulative effects of Aspergillus fumigatus (A.fumigatus) on expression of glucocorticoid receptor (GCR) in asthmatic rats. Methods: Wistar rats were randomly divided into 4 groups: a normal control group (UC), a normal control with A. fumigatus group (UC+ AF), an OVA group (OVA), and an OVA with A. fumigatus group (OVA+ AF). OVA and OVA+ AF groups were sensitized and challenged with OVA to establish asthmatic models. UC and UC+ AF groups were given normal saline as controls. After the last challenge, OVA+ AF and UC+ AF groups were given A...
March 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28293120/glucocorticoid-receptor-expression-in-20-solid-tumor-types-using-immunohistochemistry-assay
#9
Thaddeus S Block, Tiffany I Murphy, Pamela N Munster, Dat P Nguyen, Frank J Lynch
BACKGROUND: Glucocorticoid receptor (GR) activity plays a role in many aspects of human physiology and may play a crucial role in chemotherapy resistance in a wide variety of solid tumors. A novel immunohistochemistry (IHC) based assay has been previously developed and validated in order to assess GR immunoreactivity in triple-negative breast cancer. The current study investigates the standardized use of this validated assay to assess GR expression in a broad range of solid tumor malignancies...
2017: Cancer Management and Research
https://www.readbyqxmd.com/read/28286901/the-effects-of-micrornas-on-glucocorticoid-responsiveness
#10
REVIEW
Huimin Wang, Xuxu Gou, Tang Jiang, Juan Ouyang
PURPOSE: Glucocorticoids (GCs) are of wide usage in the clinical treatment of lymphoblastic malignancies such as acute lymphoblastic leukemia. However, individually distinctive responsiveness to the GC therapy may attenuate their clinical efficacy, and more reliable predictor for GC resistance is still eagerly needed. Recent studies indicate that microRNAs (miRNAs), which demonstrate regulatory functions targeting mRNAs during the post-transcription, involved in the regulation of GCs sensitivity through several mechanisms, especially adjusting the magnitude of GC receptors (GRs), which mediates the cellular effects of GCs and plays a pivotal role in GCs sensitivity, inspiring that special miRNAs pattern could serve as the biomarkers to predict GC sensitivity and bring forth potential strategies for overcoming drug resistance...
March 12, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28283576/glucocorticoid-and-cytokine-crosstalk-feedback-feedforward-and-co-regulatory-interactions-determine-repression-or-resistance
#11
Robert Newton, Suharsh V Shah, Mohammed O Altonsy, Anthony N Gerber
Inflammatory signals induce complex feedback and feedforward systems that allow tight temporal control. Whereas glucocorticoids generally repress inflammatory gene expression, GR recruitment increases expression of negative feedback and feedforward regulators, including DUSP1, IRAK3, NFKBIA, TNFAIP3 or ZFP36. Moreover, GR cooperativity with factors, such as NF-κB, can enhance regulator expression to promote repression. Conversely, MAPKs, which are inhibited by glucocorticoids, limit expression of the transcription factor IRF1, and the host defense gene, CXCL10, through a feedforward control mechanism...
March 10, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28278709/microrna-185-5p-restores-glucocorticoid-sensitivity-by-suppressing-the-mammalian-target-of-rapamycin-complex-mtorc-signaling-pathway-to-enhance-glucocorticoid-receptor-autoregulation
#12
Peisong Chen, Ting Shen, Huimin Wang, Zhiyong Ke, Yaru Liang, Juan Ouyang, Tang Jiang
Overexpression of microRNA-185-5p (miR-185-5p) in glucocorticoid (GC)-sensitive acute lymphoblastic leukemia (ALL) was identified using a microarray and reverse transcription polymerase chain reaction and was further confirmed in ALL cell lines. A reporter assay confirmed that the Rictor-one component of mammalian target of rapamycin complex 2 (mTORC2) is a target of miR-185-5p. Decreased mTORC activity was also confirmed in GC-sensitive patients. Overexpression of miR-185-5p significantly enhanced GC sensitivity in CEM-C1 cells (GC resistance) by increasing the rate of cell apoptosis and cycle arrest, and decreasing cell survival, accompanied by a decrease in mTORC activity and an increase in GC-induced glucocorticoid receptor (GR) expression...
February 28, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28276799/comparison-of-outcome-and-clinical-characteristics-of-bacteremia-caused-by-methicillin-resistant-penicillin-resistant-and-penicillin-susceptible-staphylococcus-aureus-strains
#13
Elina Jokinen, Janne Laine, Reetta Huttunen, Pekka Rahikka, Heini Huhtala, Risto Vuento, Jaana Vuopio, Jaana Syrjänen
BACKGROUND: The aim of this study was to assess the association of methicillin resistance and penicillinase production with clinical characteristics and outcome of Staphylococcus aureus bacteremia. METHODS: For 126 patients with methicillin-resistant Staphylococcus aureus (MRSA) bacteremia, 378 age- and gender-matched controls with methicillin-susceptible Staphylococcus aureus (MSSA) bacteremia were selected. Of controls, 126 had bacteremia caused by penicillin-susceptible strains (PSSA) and 252 by penicillinase-producing strains (PRSA)...
February 28, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28267764/ex-vivo-modulation-of-the-foxo1-phosphorylation-state-does-not-lead-to-dysfunction-of-t-regulatory-cells
#14
Kristen Kelley Penberthy, Monica Weaver Buckley, Sanja Arandjelovic, Kodi Ravichandran
Peripheral regulatory CD4+ T cells (Treg cells) prevent maladaptive inflammatory responses to innocuous foreign antigens. Treg cell dysfunction has been linked to many inflammatory diseases, including allergic airway inflammation. Glucocorticoids that are used to treat allergic airway inflammation and asthma are thought to work in part by promoting Treg cell differentiation; patients who are refractory to these drugs have defective induction of anti-inflammatory Treg cells. Previous observations suggest that Treg cells deficient in the transcription factor FoxO1 are pro-inflammatory, and that FoxO1 activity is regulated by its phosphorylation status and nuclear localization...
2017: PloS One
https://www.readbyqxmd.com/read/28266732/pharmacogenetics-of-steroid-responsive-acute-graft-versus-host-disease
#15
Mukta Arora, Daniel J Weisdorf, Ryan M Shanley, Bharat Thyagarajan
Glucocorticoids are central to effective therapy of acute graft-versus-host disease (GVHD). However, only about half of the patients respond to steroids in initial therapy. Based on postulated mechanisms for anti-inflammatory effectiveness, we explored genetic-variations in glucocorticoid receptor, co-chaperone proteins, membrane transporters, inflammatory mediators, and variants in the T-cell receptor complex in hematopoietic cell transplant recipients with acute GVHD requiring treatment with steroids and their donors towards response at day 28 after initiation of therapy...
March 7, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28263937/identifying-drug-drug-interactions-by-data-mining-a-pilot-study-of-warfarin-associated-drug-interactions
#16
Peter Wæde Hansen, Line Clemmensen, Thomas S G Sehested, Emil Loldrup Fosbøl, Christian Torp-Pedersen, Lars Køber, Gunnar H Gislason, Charlotte Andersson
BACKGROUND: Knowledge about drug-drug interactions commonly arises from preclinical trials, from adverse drug reports, or based on knowledge of mechanisms of action. Our aim was to investigate whether drug-drug interactions were discoverable without prior hypotheses using data mining. We focused on warfarin-drug interactions as the prototype. METHODS AND RESULTS: We analyzed altered prothrombin time (measured as international normalized ratio [INR]) after initiation of a novel prescription in previously INR-stable warfarin-treated patients with nonvalvular atrial fibrillation...
November 2016: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28262792/glucocorticoid-resistance-of-migration-and-gene-expression-in-a-daughter-mda-mb-231-breast-tumour-cell-line-selected-for-high-metastatic-potential
#17
Ebony R Fietz, Christine R Keenan, Guillermo López-Campos, Yan Tu, Cameron N Johnstone, Trudi Harris, Alastair G Stewart
Glucocorticoids are commonly used to prevent chemotherapy-induced nausea and vomiting despite a lack of understanding of their direct effect on cancer progression. Recent studies suggest that glucocorticoids inhibit cancer cell migration. However, this action has not been investigated in estrogen receptor (ER)-negative breast tumour cells, although activation of the glucocorticoid receptor (GR) is associated with a worse prognosis in ER-negative breast cancers. In this study we have explored the effect of glucocorticoids on the migration of the ER-negative MDA-MB-231 human breast tumour cell line and the highly metastatic MDA-MB-231-HM...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28262636/effects-of-corticosterone-on-infection-and-disease-in-salamanders-exposed-to-the-amphibian-fungal-pathogen-batrachochytrium-dendrobatidis
#18
Chris W Fonner, Shreya A Patel, Shelby M Boord, Matthew D Venesky, Sarah K Woodley
Although it is well established that glucocorticoid hormones (GCs) alter immune function and disease resistance in humans and laboratory animal models, fewer studies have linked elevated GCs to altered immune function and disease resistance in wild animals. The chytrid fungal pathogen Batrachochytrium dendrobatidis (Bd) infects amphibians and can cause the disease chytridiomycosis, which is responsible for worldwide amphibian declines. It is hypothesized that long-term exposure to environmental stressors reduces host resistance to Bd by suppressing host immunity via stress-induced release of GCs such as corticosterone (CORT)...
March 6, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28254481/effects-of-the-combined-herba-epimedii-and-fructus-ligustri-lucidi-on-bone-turnover-and-tgf-%C3%AE-1-smads-pathway-in-giop-rats
#19
Yan Yang, Honglei Nian, Xiufeng Tang, Xiujuan Wang, Renhui Liu
ETHNOPHARMACOLOGICAL RELEVANCE: Kidney deficiency is the main pathogenesis of osteoporosis based on the theory of "kidney governing bones" in traditional Chinese medicine (TCM). Combined Herba Epimedii and Fructus Ligustri Lucidi, based on traditional Chinese formula Er-Zhi pills, were frequently used in TCM formulas that were prescribed for kidney tonifying and bone strengthening. However, it is unclear whether the combination of the two herbs may have a protective influence on glucocorticoid-induced osteoporosis (GIOP)...
February 27, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28251001/a-case-of-refractory-neuropsychiatric-lupus-responsive-to-anticoagulation
#20
Rui Wu, Sun Hu
Neuropsychiatric disorder is a severe complication in 14% to 75% of systemic lupus erythematosus (SLE) patients, which can result in significant morbidity. A 15-year-old female SLE patient with coexistence of dural sinus thrombosis and intracerebral hemorrhage resistant to two pulses of high dose of glucocorticoid was treated with anticoagulation of the low-molecular-weight [LMW] heparin subcutaneously followed by warfarin. The patient demonstrated a remarkable clinical response.
2017: Case Reports in Neurological Medicine
keyword
keyword
17205
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"