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Interleukin receptor antagonist

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https://www.readbyqxmd.com/read/28345165/interleukin-1-inhibition-facilitates-recovery-from-liver-injury-and-promotes-regeneration-of-hepatocytes-in-alcoholic-hepatitis-in-mice
#1
Arvin Iracheta-Vellve, Jan Petrasek, Benedek Gyogyosi, Shashi Bala, Timea Csak, Karen Kodys, Gyongyi Szabo
BACKGROUND & AIMS: Inflammation and impaired hepatocyte regeneration contribute to liver failure in alcoholic hepatitis (AH). Interleukin (IL)-1 is a key inflammatory cytokine in the pathobiology of AH. The role of IL-1 in liver regeneration in the recovery phase of alcohol-induced liver injury is unknown. METHODS: Here we tested IL-1 receptor antagonist to block IL-1 signaling in a mouse model of acute-on-chronic liver injury on liver inflammation and hepatocyte regeneration in AH...
March 26, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28342985/mast-cells-are-directly-activated-by-contact-with-cancer-cells-by-a-mechanism-involving-autocrine-formation-of-adenosine-and-autocrine-paracrine-signaling-of-the-adenosine-a3-receptor
#2
Yaara Gorzalczany, Eyal Akiva, Ofir Klein, Ofer Merimsky, Ronit Sagi-Eisenberg
Mast cells (MCs) constitute an important part of the tumor microenvironment (TME). However, their underlying mechanisms of activation within the TME remain poorly understood. Here we show that recapitulating cell-to-cell contact interactions by exposing MCs to membranes derived from a number of cancer cell types, results in MC activation, evident by the increased phosphorylation of the ERK1/2 MAP kinases and Akt, in a phosphatidylinositol 3-kinase dependent fashion. Activation is unidirectional since MC derived membranes do not activate cancer cells...
March 22, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28342152/association-of-86%C3%A2-bp-variable-number-of-tandem-repeat-vntr-polymorphism-of-interleukin-1-receptor-antagonist-il1rn-with-susceptibility-and-clinical-activity-in-rheumatoid-arthritis
#3
S Ramírez-Pérez, M Salazar-Páramo, S Pineda-Monjarás, U De la Cruz-Mosso, J Hernández-Bello, G E Martínez-Bonilla, A L Pereira-Suárez, J F Muñoz-Valle
Rheumatoid arthritis (RA) is a chronic, systemic disease of unknown etiology. Several studies have reported a variable number of tandem repeat (VNTR) 86 bp (rs2234663) in the intron 2 of IL1RN gene with RA risk. The present study was designed to determine the frequencies of this polymorphism in patients with RA and control subjects (CS) and its association with RA in a western Mexican population. An analytical cross-sectional study was performed, in which 350 patients with RA and 307 CS were included. The identification of IL1RN VNTR polymorphism was carried out by polymerase chain reaction (PCR), and genotypes were associated with clinical variables (DAS28 and CRP)...
March 25, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28339005/curcumin-inhibits-angiotensin-ii-induced-inflammation-and-proliferation-of-rat-vascular-smooth-muscle-cells-by-elevating-ppar-%C3%AE-activity-and-reducing-oxidative-stress
#4
Hai-Yu Li, Mei Yang, Ze Li, Zhe Meng
Angiotensin II (AngII)-induced production of inflammatory factors and proliferation in vascular smooth muscle cells (VSMCs) play an important role in the progression of atherosclerotic plaques. Growing evidence has demonstrated that activation of peroxisome proliferator-activated receptor-γ (PPAR-γ) effectively attenuates AngII-induced inflammation and intercellular reactive oxygen species (iROS) production. Curcumin (Cur) inhibits inflammatory responses by enhancing PPAR-γ activity and reducing oxidative stress in various tissues...
March 20, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28338619/role-and-function-of-a2a-and-a%C3%A2-adenosine-receptors-in-patients-with-ankylosing-spondylitis-psoriatic-arthritis-and-rheumatoid-arthritis
#5
Annalisa Ravani, Fabrizio Vincenzi, Alessandra Bortoluzzi, Melissa Padovan, Silvia Pasquini, Stefania Gessi, Stefania Merighi, Pier Andrea Borea, Marcello Govoni, Katia Varani
Rheumatoid arthritis (RA), ankylosing spondylitis (AS) and psoriatic arthritis (PsA) are chronic inflammatory rheumatic diseases that affect joints, causing debilitating pain and disability. Adenosine receptors (ARs) play a key role in the mechanism of inflammation, and the activation of A2A and A₃AR subtypes is often associated with a reduction of the inflammatory status. The aim of this study was to investigate the involvement of ARs in patients suffering from early-RA (ERA), RA, AS and PsA. Messenger RNA (mRNA) analysis and saturation binding experiments indicated an upregulation of A2A and A₃ARs in lymphocytes obtained from patients when compared with healthy subjects...
March 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28337831/interleukin-1-alpha-deficiency-increases-the-expression-of-follicle-stimulating-hormone-receptors-in-granulosa-cells
#6
Shiri Uri-Belapolsky, Irit Miller, Aviv Shaish, Mattan Levi, Dror Harats, Lihi Ninio-Many, Yehuda Kamari, Ruth Shalgi
Follicle-stimulating hormone receptor (FSHR) is a pivotal regulator of ovarian response to hormonal stimulation. Inflammatory conditions have been linked to lower FSHR expression in granulosa cells (GCs) as well as an attenuated response to hormonal stimulation. The current study aimed to reveal if deficiency and/or blockage of the pro-inflammatory cytokine interleukin 1-alpha (IL1A) increased Fshr expression in rodent GCs. We found elevated Fshr transcript abundance, as assessed by quantitative PCR, in primary GCs isolated from Il1a-knockout compared to wild-type mice, and that the expression of FSHR is significantly higher in Il1a-knockout compared to wild-type ovaries...
March 24, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28337574/the-rs504393-influences-the-level-of-nociceptive-factors-and-enhances-opioid-analgesic-potency-in-neuropathic-rats
#7
Klaudia Kwiatkowski, Anna Piotrowska, Ewelina Rojewska, Wioletta Makuch, Joanna Mika
Increasing evidence has indicated that activated glial cells releasing nociceptive factors, such as interleukins and chemokines, are of key importance for neuropathic pain. Significant changes in the production of nociceptive factors are associated with the low effectiveness of opioids in neuropathic pain. Recently, it has been suggested that CCL2/CCR2 signaling is important for nociception. Here, we studied the time course changes in the mRNA/protein level of CD40/Iba-1, CCL2 and CCR2 in the spinal cord/dorsal root ganglia (DRG) in rats following chronic constriction injury (CCI) of the sciatic nerve...
March 23, 2017: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/28324042/interleukin-1-antagonism-decreases-cortisol-levels-in-obese-individuals
#8
Sandrine Andrea Urwyler, Philipp Schuetz, Fahim Ebrahimi, Marc Y Donath, Mirjam Christ-Crain
Context: Increased cortisol levels in obesity may contribute to the associated metabolic syndrome. In obesity, the activated innate immune system leads to increased interleukin (IL)-1β, which is known to stimulate the release of adrenocorticotropin hormone (ACTH). Objective: We hypothesised that in obesity IL-1 antagonism would result in downregulation of the hypothalamo-pituitary-adrenal (HPA) axis, leading to decreased cortisol levels. Design and participants: In this prospective intervention study we included 73 patients with obesity (BMI >30kg/m2) and at least one additional feature of the metabolic syndrome...
February 20, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323848/7%C3%AE-hydroxycholesterol-induces-monocyte-macrophage-cell-expression-of-interleukin-8-via-c5a-receptor
#9
Hyok-Rae Cho, Yonghae Son, Sun-Mi Kim, Bo-Young Kim, Seong-Kug Eo, Young Chul Park, Koanhoi Kim
We investigated effects of 7-oxygenated cholesterol derivatives present in atherosclerotic lesions, 7α-hydroxycholesterol (7αOHChol), 7β-hydroxycholesterol (7βOHChol), and 7-ketocholesterol (7K), on IL-8 expression. Transcript levels of IL-8 and secretion of its corresponding gene product by monocytes/macrophages were enhanced by treatment with 7αOHChol and, to a lesser extent, 7K, but not by 7βOHChol. The 7-oxygenated cholesterol derivatives, however, did not change transcription of the IL-8 gene in vascular smooth muscle cells...
2017: PloS One
https://www.readbyqxmd.com/read/28322750/supradural-inflammatory-soup-in-awake-and-freely-moving-rats-induces-facial-allodynia-that-is-blocked-by-putative-immune-modulators
#10
Julie Wieseler, Amanda Ellis, Andrew McFadden, Kendra Stone, Kimberley Brown, Sara Cady, Leandro F Bastos, David Sprunger, Niloofar Rezvani, Kirk Johnson, Kenner C Rice, Steven F Maier, Linda R Watkins
Facial allodynia is a migraine symptom that is generally considered to represent a pivotal point in migraine progression. Treatment before development of facial allodynia tends to be more successful than treatment afterwards. As such, understanding the underlying mechanisms of facial allodynia may lead to a better understanding of the mechanisms underlying migraine. Migraine facial allodynia is modeled by applying inflammatory soup (histamine, bradykinin, serotonin, prostaglandin E2) over the dura. Whether glial and/or immune activation contributes to such pain is unknown...
March 16, 2017: Brain Research
https://www.readbyqxmd.com/read/28322132/therapeutically-targeting-the-inflammasome-product-in-a-chimeric-model-of-endometriosis-related-surgical-adhesions
#11
Meredith M Stocks, Marta A Crispens, Tianbing Ding, Shilpa Mokshagundam, Kaylon L Bruner-Tran, Kevin G Osteen
Development of adhesions commonly occurs in association with surgery for endometriosis. Even in the absence of surgery, women with endometriosis appear to be at an enhanced risk of developing adhesions. In the current study, we utilized a chimeric mouse model of experimental endometriosis in order to examine the role of inflammasome activation in the development of postsurgical adhesions. Mice were randomized to receive peritoneal injections of human endometrial tissue fragments or endometrial tissue conditioned media (CM) from women with or without endometriosis 16 hours after ovariectomy and placement of an estradiol-releasing silastic capsule...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28321130/effective-combinatorial-immunotherapy-for-castration-resistant-prostate-cancer
#12
Xin Lu, James W Horner, Erin Paul, Xiaoying Shang, Patricia Troncoso, Pingna Deng, Shan Jiang, Qing Chang, Denise J Spring, Padmanee Sharma, John A Zebala, Dean Y Maeda, Y Alan Wang, Ronald A DePinho
A significant fraction of patients with advanced prostate cancer treated with androgen deprivation therapy experience relapse with relentless progression to lethal metastatic castration-resistant prostate cancer (mCRPC). Immune checkpoint blockade using antibodies against cytotoxic-T-lymphocyte-associated protein 4 (CTLA4) or programmed cell death 1/programmed cell death 1 ligand 1 (PD1/PD-L1) generates durable therapeutic responses in a significant subset of patients across a variety of cancer types. However, mCRPC showed overwhelming de novo resistance to immune checkpoint blockade, motivating a search for targeted therapies that overcome this resistance...
March 20, 2017: Nature
https://www.readbyqxmd.com/read/28321024/the-growth-hormone-secretagogue-hexarelin-protects-rat-cardiomyocytes-from-in-vivo-ischemia-reperfusion-injury-through-interleukin-1-signaling-pathway
#13
Jiannan Huang, Yi Li, Juan Zhang, Yusheng Liu, Qinghua Lu
Hexarelin, a synthetic growth hormone-releasing peptide, has been proven to possess cardioprotective actions through its binding to the growth hormone secretagogue receptor (GHSR) 1a and the non-GHSR receptor CD36. However, its effect on myocardial ischemia/reperfusion (I/R) injury has not been fully clarified in vivo. We aimed to determine whether hexarelin treatment could protect cardiomyocytes from I/R injury and to examine the underlying mechanisms. In vivo hearts of male SD rats underwent 30 minutes of ischemia by left coronary artery ligation followed by reperfusion...
March 17, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28300164/role-of-purinergic-signaling-in-experimental-pneumococcal-meningitis
#14
Marco Zierhut, Susanne Dyckhoff, Ilias Masouris, Matthias Klein, Sven Hammerschmidt, Hans-Walter Pfister, Korcan Ayata, Marco Idzko, Uwe Koedel
Excessive neutrophilic inflammation contributes to brain pathology and adverse outcome in pneumococcal meningitis (PM). Recently, we identified the NLRP3 inflammasome/interleukin (IL)-1β pathway as a key driver of inflammation in PM. A critical membrane receptor for NLRP3 inflammasome activation is the ATP-activated P2 purinoceptor (P2R) P2X7. Thus, we hypothesized involvement of ATP and P2Rs in PM. The functional role of ATP was investigated in a mouse meningitis model using P2R antagonists. Brain expression of P2Rs was assessed by RT-PCR...
March 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28299830/repeated-water-avoidance-stress-induces-visceral-hypersensitivity-role-of-il-1-il-6-and-peripheral-corticotropin-releasing-factor
#15
Tsukasa Nozu, Saori Miyagishi, Rintaro Nozu, Kaoru Takakusaki, Toshikatsu Okumura
BACKGROUND AND AIM: Repeated water avoidance stress (WAS) induces visceral hypersensitivity. Additionally, it is also known to activate corticotropin-releasing factor (CRF), mast cells and pro-inflammatory cytokines systems, but their precise roles on visceral sensation have not been determined definitely. The aim of the study was to explore this issue. METHODS: Abdominal muscle contractions induced by colonic balloon distention, i.e. visceromotor response (VMR) was detected electrophysiologically in conscious rats...
March 15, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28298024/reduction-of-inflammation-after-administration-of-interleukin-1-receptor-antagonist-following-aneurysmal-subarachnoid-hemorrhage-results-of-the-subcutaneous-interleukin-1ra-in-sah-scil-sah-study
#16
James Galea, Kayode Ogungbenro, Sharon Hulme, Hiren Patel, Sylvia Scarth, Margaret Hoadley, Karen Illingworth, Catherine J McMahon, Nikolaos Tzerakis, Andrew T King, Andy Vail, Stephen J Hopkins, Nancy Rothwell, Pippa Tyrrell
OBJECTIVE Aneurysmal subarachnoid hemorrhage (aSAH) is a devastating cerebrovascular event with long-term morbidity and mortality. Patients who survive the initial bleeding are likely to suffer further early brain injury arising from a plethora of pathological processes. These may result in a worsening of outcome or death in approximately 25% of patients and may contribute to longer-term cognitive dysfunction in survivors. Inflammation, mediated by the cytokine interleukin-1 (IL-1), is an important contributor to cerebral ischemia after diverse forms of brain injury, including aSAH...
February 24, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28294424/therapeutic-regulation-of-systemic-inflammation-in-xenograft-recipients
#17
Hayato Iwase, Hong Liu, Tao Li, Zhongquiang Zhang, Bingsi Gao, Hidetaka Hara, Martin Wijkstrom, Cassandra Long, Ryan Saari, David Ayares, David K C Cooper, Mohamed B Ezzelarab
Inflammation is known to preclude tolerance after transplantation. We have previously shown that systemic inflammation in xenograft recipients (SIXR) precedes activation of coagulation in the absence of T cell responses. Accordingly, SIXR may amplify innate and adaptive immune responses against xenografts after pig-to-primate xenotransplantation, even with efficient immunosuppressive therapy. We evaluated the impact of anti-inflammatory agents on pro-inflammatory cytokines and chemokines in pig artery patch and heart xenograft recipients...
March 12, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28293435/interleukin-1-receptor-antagonist-and-interleukin-4-genes-variable-number-tandem-repeats-are-associated-with-adiposity-in-malaysian-subjects
#18
Yung-Yean Kok, Hing-Huat Ong, Yee-How Say
Interleukin-1 receptor antagonist (IL1RA) intron 2 86 bp repeat and interleukin-4 (IL4) intron 3 70 bp repeat are variable number tandem repeats (VNTRs) that have been associated with various diseases, but their role in obesity is elusive. The objective of this study was to investigate the association of IL1RA and IL4 VNTRs with obesity and adiposity in 315 Malaysian subjects (128 M/187 F; 23 Malays/251 ethnic Chinese/41 ethnic Indians). The allelic distributions of IL1RA and IL4 were significantly different among ethnicities, and the alleles were associated with total body fat (TBF) classes...
2017: Journal of Obesity
https://www.readbyqxmd.com/read/28283331/the-role-of-foxo1-in-interleukin-1%C3%AE-induced-autostimulation-in-retina-endothelial-cells-and-retinas-of-diabetic-rats
#19
Lina Wu, Feng Guo, Yang Wu, Qingzhu Wang, Xiaojun Ma, Yanyan Zhao, Guijun Qin
Diabetic retinopathy is a chronic, low-grade inflammatory disease. The present study aimed to investigate the effect of forkhead transcription factor O1 (FoxO1) expression on interleukin-1β (IL-1β)-induced autostimulation, both in vitro in human retina microvascular endothelial cells (HRMECs), and in vivo in retinas isolated from streptozotocin-induced diabetic rats. High-glucose (HG) and recombinant IL-1β treatment were both shown to increase the expression of FoxO1 and IL-1β in HRMECs in a dose-dependent manner...
March 7, 2017: Microvascular Research
https://www.readbyqxmd.com/read/28282360/an-alpha7-nicotinic-acetylcholine-receptor-agonist-gts-21-promotes-c2c12-myonuclear-accretion-in-association-with-release-of-interleukin-6-il-6-and-improves-survival-in-burned-mice
#20
Mohammed A S Khan, Mohammed F Khan, Shizuka Kashiwagi, William R Kem, Shingo Yasuhara, Masao Kaneki, Ronald G Tompkins, J A Jeevendra Martyn
The role of interleukin-6 (IL-6) in physiological processes and disease is poorly understood. The hypothesis tested in this study was that selective alpha7 acetylcholine receptor (α7AChR) agonist, GTS-21, releases of IL-6 in association with myonuclear accretion and enhances insulin signaling in muscle cells, and improves survival of burn injured (BI) mice. The in vitro effects of GTS-21 were determined in C2C12 myoblasts and 7-day differentiated myotubes (myotubes). The in vivo effects of GTS-21 were tested in BI wild type (WT) and IL-6 knockout (IL6KO) mice...
March 9, 2017: Shock
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