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https://www.readbyqxmd.com/read/28806151/establishment-of-a-monoclonal-antibody-against-chgilz
#1
Zhiyuan He, Yongqiang Wang
The chicken glucocorticoid-induced leucine zipper (chGILZ) participates in the inflammation of avian immunosuppressive diseases. We aimed to establish a monoclonal antibody (MAb) against chGILZ and to investigate its distribution in clinical diagnosis. A gene cloned from chicken embryo fibroblast (CEF) cell was inserted into the expression vector pET-28a and pGEX-6p-1. The recombinant expression vectors were transformed into Escherichia coli BL21 (DE3). Then the recombinant proteins His-chGILZ and GST-chGILZ were successfully expressed and purified...
August 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28771604/role-of-glucocorticoid-induced-leucine-zipper-gilz-in-inflammatory-bone-loss
#2
Nianlan Yang, Babak Baban, Carlos M Isales, Xing-Ming Shi
TNF-α plays a key role in the development of rheumatoid arthritis (RA) and inflammatory bone loss. Unfortunately, treatment of RA with anti-inflammatory glucocorticoids (GCs) also causes bone loss resulting in osteoporosis. Our previous studies showed that overexpression of glucocorticoid-induced leucine zipper (GILZ), a mediator of GC's anti-inflammatory effect, can enhance osteogenic differentiation in vitro and bone acquisition in vivo. To investigate whether GILZ could antagonize TNF-α-induced arthritic inflammation and protect bone in mice, we generated a TNF-α-GILZ double transgenic mouse line (TNF-GILZ Tg) by crossbreeding a TNF-α Tg mouse, which ubiquitously expresses human TNF-α, with a GILZ Tg mouse, which expresses mouse GILZ under the control of a 3...
2017: PloS One
https://www.readbyqxmd.com/read/28754349/effect-of-steviol-steviol-glycosides-and-stevia-extract-on-glucocorticoid-receptor-signaling-in-normal-and-cancer-blood-cells
#3
Christina Panagiotou, Chrysovalantou Mihailidou, George Brauhli, Olga Katsarou, Paraskevi Moutsatsou
The use of steviol glycosides as non-caloric sweeteners has proven to be beneficial for patients with type 2 diabetes mellitus (T2D), obesity, and metabolic syndrome. However, recent data demonstrate that steviol and stevioside might act as glucocorticoid receptor (GR) agonists and thus correlate with adverse effects on metabolism. Herein, we evaluated the impact of steviol, steviol glycosides, and a Greek-derived stevia extract on a number of key steps of GR signaling cascade in peripheral blood mononuclear cells (PBMCs) and in Jurkat leukemia cells...
July 25, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28729456/mechanistic-multi-tissue-modeling-of-gilz-regulation-integrating-circadian-gene-expression-with-receptor-mediated-corticosteroid-pharmacodynamics
#4
Vivaswath S Ayyar, Debra C DuBois, Richard R Almon, William J Jusko
The glucocorticoid-induced leucine zipper (GILZ) is an important mediator of anti-inflammatory corticosteroid action. The pharmacokinetic/pharmacodynamic/pharmacogenomic effects of acute and chronic methylprednisolone (MPL) dosing on the tissue-specific dynamics of GILZ expression were examined in rats. A mechanism-based model was developed to investigate and integrate the role of MPL and circadian rhythms on the transcriptional enhancement of GILZ in multiple tissues. Animals received a single 50 mg/kg intramuscular bolus or a seven-day 0...
July 20, 2017: Journal of Pharmacology and Experimental Therapeutics
https://www.readbyqxmd.com/read/28728173/glucocorticoid-induced-leucine-zipper-protects-the-retina-from-light-induced-retinal-degeneration-by-inducing-bcl-xl-in-rats
#5
Ruiping Gu, Wenyi Tang, Boya Lei, Xinyi Ding, Cheng Jiang, Gezhi Xu
Purpose: The aim of the present study was to investigate the neuroprotective effects of glucocorticoid-induced leucine zipper (GILZ) in a light-induced retinal degeneration model and to explore the underlying mechanisms. Methods: Intravitreal injection of recombinant GILZ-overexpressing lentivirus (OE-GILZ-rLV) and short hairpin RNA targeting GILZ recombinant lentivirus (shRNA-GILZ-rLV) was performed to up- and downregulate retinal GILZ, respectively. Three days after stable transduction, rats were exposed to continuous bright light (5000 lux) for 2 days...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28649452/glucocorticoid-receptor-expression-on-circulating-leukocytes-differs-between-healthy-male-and-female-adults
#6
Kim D Lu, Shlomit Radom-Aizik, Fadia Haddad, Frank Zaldivar, Monica Kraft, Dan M Cooper
INTRODUCTION: The glucocorticoid receptor (GR) is a key receptor involved in inflammatory responses and is influenced by sex steroids. This study measured GR expression on circulating leukocyte subtypes in males and females. METHODS: A total of 23 healthy adults (12 female) participated in this study. GR expression was measured in leukocyte subtypes using flow cytometry. Peripheral blood mononuclear cell (PBMC) gene expression of GR (NR3C1), GR β, TGF-β1 and 2, and glucocorticoid-induced leucine zipper (GILZ) were determined by real-time polymerase chain reaction...
April 2017: Journal of clinical and translational science
https://www.readbyqxmd.com/read/28638383/non-canonical-glucocorticoid-receptor-transactivation-of-gilz-by-alcohol-suppresses-cell-inflammatory-response
#7
Hang Pong Ng, Scott Jennings, Jack Wang, Patricia E Molina, Steve Nelson, Guoshun Wang
Acute alcohol exposure suppresses cell inflammatory response. The underlying mechanism has not been fully defined. Here we report that alcohol was able to activate glucocorticoid receptor (GR) signaling in the absence of glucocorticoids (GCs) and upregulated glucocorticoid-induced leucine zipper (gilz), a prominent GC-responsive gene. Such a non-canonical activation of GR was not blocked by mifepristone, a potent GC competitor. The proximal promoter of gilz, encompassing five GC-responsive elements (GREs), was incorporated and tested in a luciferase reporter system...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28601944/glucocorticoid-induced-leucine-zipper-expression-is-associated-with-response-to-treatment-and-immunoregulation-in-systemic-lupus-erythematosus
#8
Saeed Mohammadi, Mohammad Reza Ebadpour, Sima Sedighi, Mohsen Saeedi, Ali Memarian
Systemic lupus erythematosus (SLE) is an autoimmune disorder in which cytokine balance is disturbed. Glucocorticoids (GCs) are shown to balance immune response by transcriptional regulation of glucocorticoid receptor target genes such as Glucocorticoid-induced leucine zipper (GILZ) which has been introduced as an endogenous anti-inflammatory mediator. In the present study, we assessed the expression of GILZ in association with interferon-γ (IFN-γ), interleukine-10 (IL-10), and B lymphocyte stimulator (BLyS) plasma levels in SLE patients...
August 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28499885/the-role-of-gilz-in-modulation-of-adaptive-immunity-in-a-murine-model-of-myocardial-infarction
#9
Babak Baban, Lin Yin, Xu Qin, Jun Yao Liu, Xingming Shi, Mahmood S Mozaffari
Myocardial infarction (MI) is associated with intense immune and inflammatory responses which contribute to tissue injury. Increasing evidence indicates that the glucocorticoid-induced leucine zipper (GILZ) protein suppresses immune and inflammatory responses. However, the status of and the role of GILZ in MI are not known. We tested the hypotheses that a) MI reduces cardiac GILZ associated with intense inflammation and cell death and b) intramyocardial GILZ delivery confers cardioprotection in association with increased Tregs and suppression of inflammation...
June 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28373208/role-of-the-glucocorticoid-induced-leucine-zipper-gene-in-dexamethasone-induced-inhibition-of-mouse-neutrophil-migration-via-control-of-annexin-a1-expression
#10
Erika Ricci, Simona Ronchetti, Eva Pericolini, Elena Gabrielli, Luigi Cari, Marco Gentili, Elena Roselletti, Graziella Migliorati, Anna Vecchiarelli, Carlo Riccardi
The glucocorticoid-induced leucine zipper gene (GILZ) is a pivotal mediator of the anti-inflammatory effects of glucocorticoids (GCs) that are known to regulate the function of both adaptive and innate immunity cells. Our aim was to investigate the role of GILZ in GC-induced inhibition of neutrophil migration, as this role has not been investigated before. We found that GILZ expression was induced by dexamethasone (DEX), a synthetic GC, in neutrophils, and that it regulated migration of these cells into inflamed tissues under DEX treatment...
April 3, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28363169/glucocorticoid-induced-leucine-zipper-may-play-an-important-role-in-icariin-by-suppressing-osteogenesis-inhibition-induced-by-glucocorticoids-in-osteoblasts
#11
Zhong Lin, Zheng Li Jiang, Li Hua Chen, Yuan Sun, Sai Zhen Chen, Peng Zhou, Ai Xiao Xia, Hui Jin, Yan Wu Zhu, Dan Yang Chen
BACKGROUND AND PURPOSE: Icariin is a potent stimulator of osteogenic differentiation; however, the mechanism underlying its osteogenic effect remains unclear. The osteogenic effect of icariin is related to the upstream glucocorticoid-induced leucine zipper (GILZ) signaling pathway, and antagonism with dexamethasone-induced osteoblast inhibition was noted. METHODS: MC3T3-E1 cells were cultured in induced medium treated with icariin with or without dexamethasone. After short interfering RNA (siRNA) were used to silence GILZ expression, the degree of mineralization, proliferation, and GILZ expression as well as the levels of osteogenic (OPG, RANKL, ALP, OC and RUNX2) markers were tested...
June 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28267767/maternal-exposure-to-low-levels-of-corticosterone-during-lactation-protects-adult-rat-progeny-against-tnbs-induced-colitis-a-study-on-gr-mediated-anti-inflammatory-effect-and-prokineticin-system
#12
Manuela Zinni, Anna Rita Zuena, Veronica Marconi, Carla Petrella, Ilaria Fusco, Chiara Giuli, Nadia Canu, Cinzia Severini, Maria Broccardo, Vassilia Theodorou, Roberta Lattanzi, Paola Casolini
The early phase of life represents a critical period for the development of an organism. Interestingly, early life experiences are able to influence the development of the gastrointestinal tract and the reactivity to colonic inflammatory stress. We recently demonstrated that adult male rats exposed to low doses of corticosterone during lactation (CORT-nursed rats) are protected against experimental colitis induced by the intracolonic infusion of 2,4,6-trinitrobenzenesulfonic acid (TNBS). Based on these interesting results, we wanted to better investigate which cellular actors could be involved in the protection of CORT-nursed rats from TNBS-induced experimental colitis...
2017: PloS One
https://www.readbyqxmd.com/read/28259749/metabolic-rewiring-in-cancer-cells-overexpressing-the-glucocorticoid-induced-leucine-zipper-protein-gilz-activation-of-mitochondrial-oxidative-phosphorylation-and-sensitization-to-oxidative-cell-death-induced-by-mitochondrial-targeted-drugs
#13
Fanny André, Anne Trinh, Stéphane Balayssac, Patrice Maboudou, Salim Dekiouk, Myriam Malet-Martino, Bruno Quesnel, Thierry Idziorek, Jérome Kluza, Philippe Marchetti
Cancer cell metabolism is largely controlled by oncogenic signals and nutrient availability. Here, we highlighted that the glucocorticoid-induced leucine zipper (GILZ), an intracellular protein influencing many signaling pathways, reprograms cancer cell metabolism to promote proliferation. We provided evidence that GILZ overexpression induced a significant increase of mitochondrial oxidative phosphorylation as evidenced by the augmentation in basal respiration, ATP-linked respiration as well as respiratory capacity...
March 1, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28257662/daucane-esters-from-laserwort-laserpitium-latifolium-l-inhibit-cytokine-and-chemokine-production-in-human-lung-epithelial-cells
#14
Višnja Popović, Jan Goeman, Jonathan Thommis, Arne Heyerick, Jurgen Caroen, Johan Van der Eycken, Karolien De Bosscher
BACKGROUND: Laserwort, Laserpitium latifolium L. (Apiaceae), is a European medicinal plant. Its roots and rhizomes were traditionally used as a general tonic and to treat inflammatory and infective diseases. PURPOSE: The anti-inflammatory potential of daucane esters, isolated from underground parts extract of L. latifolium and specific structural features that contribute to their activity were investigated. In addition, we studied their interference with the transactivation capacity of the Glucocorticoid Receptor when added together with a classic glucocorticoid (GC), dexamethasone (DEX)...
March 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28238753/glucocorticoid-induced-leucine-zipper-overexpression-inhibits-lipopolysaccharide-induced-retinal-inflammation-in-rats
#15
Ruiping Gu, Boya Lei, Qinmeng Shu, Gang Li, Gezhi Xu
Glucocorticoid-induced leucine zipper (GILZ) mediates several effects of glucocorticoids and has important anti-inflammatory properties. Here, we explored the role of GILZ in inhibiting retinal inflammation. Endotoxin-induced uveitis (EIU) was established in rats by intravitreal injection of lipopolysaccharide (LPS). GILZ levels decreased in the EIU retina at 4 h after LPS injection and slowly recovered within 24 h. Retinal GILZ was downregulated by recombinant lentivirus-delivered short-hairpin RNA targeting GILZ (shRNA-GILZ-rLV) and upregulated by recombinant lentivirus-mediated GILZ overexpression (Oe-GILZ-rLV)...
February 24, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28230786/sex-specificity-of-mineralocorticoid-target-gene-expression-during-renal-development-and-long-term-consequences
#16
Laurence Dumeige, Caroline Storey, Lyvianne Decourtye, Melanie Nehlich, Christophe Lhadj, Say Viengchareun, Laurent Kappeler, Marc Lombès, Laetitia Martinerie
Sex differences have been identified in various biological processes, including hypertension. The mineralocorticoid signaling pathway is an important contributor to early arterial hypertension, however its sex-specific expression has been scarcely studied, particularly with respect to the kidney. Basal systolic blood pressure (SBP) and heart rate (HR) were measured in adult male and female mice. Renal gene expression studies of major players of mineralocorticoid signaling were performed at different developmental stages in male and female mice using reverse transcription quantitative PCR (RT-qPCR), and were compared to those of the same genes in the lung, another mineralocorticoid epithelial target tissue that regulates ion exchange and electrolyte balance...
February 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28129426/glucocorticoid-induced-leucine-zipper-suppresses-icam-1-and-mcp-1-expression-by-dephosphorylation-of-nf-%C3%AE%C2%BAb-p65-in-retinal-endothelial-cells
#17
Ruiping Gu, Boya Lei, Chen Jiang, Gezhi Xu
Purpose: Glucocorticoid-induced leucine zipper (GILZ) is involved in anti-inflammatory activities in several animal models and in various cell types. In this study, we explored the role of GILZ in rat retinal vascular endothelial cells. Methods: Glucocorticoid-induced leucine zipper overexpression or silencing was established using GILZ overexpressing recombinant lentivirus (OE-GILZ-rLV) or short-hairpin RNA targeting GILZ recombinant lentivirus (shRNA-GILZ-rLV), respectively, in rat primary retinal microvascular endothelial cells (RMECs) and intact retina...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28094030/glucocorticoid-induced-leucine-zipper-protein-regulates-sodium-and-potassium-balance-in-the-distal-nephron
#18
Priyanka Rashmi, GianLuca Colussi, Michael Ng, Xinhao Wu, Atif Kidwai, David Pearce
Glucocorticoid induced leucine zipper protein (GILZ) is an aldosterone-regulated protein that controls sodium transport in cultured kidney epithelial cells. Mice lacking GILZ have been reported previously to have electrolyte abnormalities. However, the mechanistic basis has not been explored. Here we provide evidence supporting a role for GILZ in modulating the balance of renal sodium and potassium excretion by regulating the sodium-chloride cotransporter (NCC) activity in the distal nephron. Gilz(-/-) mice have a higher plasma potassium concentration and lower fractional excretion of potassium than wild type mice...
January 13, 2017: Kidney International
https://www.readbyqxmd.com/read/27934944/overexpression-of-glucocorticoid-induced-leucine-zipper-gilz-increases-susceptibility-to-imiquimod-induced-psoriasis-and-involves-cutaneous-activation-of-tgf-%C3%AE-1
#19
Elena Carceller, Marlies Ballegeer, Julie Deckers, Carlo Riccardi, Stefano Bruscoli, Tino Hochepied, Claude Libert, Paloma Pérez
Psoriasis vulgaris is a chronic inflammatory skin disease affecting millions of people. Its pathophysiology is complex and involves a skin compartment with epidermal and immune cells which produce cytokines, e.g. belonging to the IL-23-Th17-cell axis. Glucocorticoids (GCs) are the most common therapeutics used in cutaneous inflammatory disorders and GC-induced leucine zipper (GILZ) has emerged as a mediator of GCs due to its anti-inflammatory actions, theoretically lacking GC side-effects. We evaluated whether GILZ may provide a better therapeutic index in comparison to GCs during the onset and progression of psoriasis by generating and characterizing a mouse model with generalized overexpression of this protein (GILZ-Tg mice) and the imiquimod (IMQ) psoriasis model...
December 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27913746/anti-trachea-inflammatory-effects-of-diosgenin-from-dioscorea-nipponica-through-interactions-with-glucocorticoid-receptor-%C3%AE
#20
Yang Junchao, Wang Zhen, Wang Yuan, Xu Liying, Jiang Libin, Zhu Yuanhong, Zhao Wei, Chen Ruilin, Zhai Lu
Asthma is a heterogeneous disease characterized by symptoms of chronic inflammation and airway structural and functional changes. It affects about 300 million people worldwide and causes 250 000 deaths annually, but its symptoms can be greatly relieved by regular use of inhaled glucocorticoids (GCs). GCs exert their function through interacting with glucocorticoid receptors (GRs). Diosgenin is a naturally occurring steroidal saponin abundantly present in many medicinal plants, including Dioscorea nipponica, which shares a similar steroidal structure with GC...
February 2017: Journal of International Medical Research
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