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"Nitric Oxide" and "Autoimmunity"

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https://www.readbyqxmd.com/read/29766007/autoimmunity-in-the-abdominal-aortic-aneurysm-and-its-association-with-smoking
#1
M David Tilson
Smoking increases the risk of abdominal aortic aneurysm (AAA) in both humans and mice, although the underlying mechanisms are not completely understood. An adventitial aortic antigen, AAAP-40, has been partially sequenced. It has motifs with similarities to all three fibrinogen chains and appears to be connected in evolution to a large family of proteins called fibrinogen-related proteins. Fibrinogen may undergo non-enzymatic nitration, which may result from exposure to nitric oxide in cigarette smoke. Nitration of proteins renders them more immunogenic...
December 2017: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/29761396/macrophage-bactericidal-assays
#2
Mourad Aribi
The search for the bactericidal activity of macrophage (Mϕ) is crucial not only during infection, but also to explore its functional activities in normal and pathological conditions, such as autoimmune and inflammatory disorders, allergic inflammation, and cancer. There are several methods exploring the phagocytic and bactericidal activities of Mϕ. This chapter focuses specifically on the technique called antibiotic protection assay and on the methods for the determination of Mϕ production of nitric oxide and hydrogen peroxide as antimicrobial agents and biomarkers of respiratory burst...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29752572/propolis-modulates-nos2-arginase-1-pathway-in-tropomyosin-induced-experimental-autoimmune-uveitis
#3
Kahina Touri, Houda Belguendouz, Oussama Medjeber, Zineb Djeraba, Karima Lahmar, Chafia Touil-Boukoffa
In this study, we evaluated the preventive and curative effects of ethanolic extract of Propolis (EEP) during α-Tropomyosin-induced uveitis in an experimental model using Wistar rats, through the regulation of inducible nitric oxide synthase (NOS2) and arginase-1. In this context, rats received daily injection of EEP (100 mg/kg) for 5 days prior to immunization or for 9 days commencing 5 days post immunization with α-Tropomyosin extract, then were sacrificed at day 14. Histological examination, NOS2, arginase-1, and nuclear factor-κB (NF-κB) expression were evaluated in the retinas...
May 11, 2018: Inflammopharmacology
https://www.readbyqxmd.com/read/29742699/effect-of-photobiomodulation-treatment-in-the-sublingual-radial-artery-region-and-along-the-spinal-column-in-individuals-with-multiple-sclerosis-protocol-for-a-randomized-controlled-double-blind-clinical-trial
#4
RANDOMIZED CONTROLLED TRIAL
Tamiris da Silva, Fernanda Cordeiro da Silva, Andréa Oliver Gomes, Ariane Oliveira Viana, Marcela Letícia Leal Gonçalves, Maria Fernanda Setúbal Destro Rodrigues, Anna Carolina Ratto Tempestini Horliana, Daniela de Fátima Teixeira da Silva, Maria Cristina Chavantes, Yara Dadalti Fragoso, Luciana Prats Branco, Lara Jansiski Motta, Kristianne Porta Santos Fernandes, Raquel Agnelli Mesquita-Ferrari, Sandra Kalil Bussadori
BACKGROUND: Multiple sclerosis (MS) is an autoimmune disease, for which the forms of treatment are medication and rehabilitation. However, in vitro and in vivo studies have demonstrated that photobiomodulation can be an effective treatment modality for inflammatory diseases, including MS. Photobiomodulation has a broad range of benefits, such as the avoidance of cell and tissue death, the stimulation of healing and injury repair, reductions in pain, edema and inflammation, cell proliferation, and even apoptosis...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29694854/s-nitrosoglutathione-reductase-gsnor-inhibitor-as-an-immune-modulator-in-experimental-autoimmune-encephalomyelitis
#5
Nishant Saxena, Jeseong Won, Seungho Choi, Avtar K Singh, Inderjit Singh
We previously reported that S-nitrosoglutathione (GSNO), an endogenous nitric oxide carrier, attenuated TH 17-mediated immune responses in experimental autoimmune encephalomyelitis (EAE), an animal model for multiple sclerosis (MS). Cellular GSNO homeostasis is regulated via its synthesis by reaction between nitric oxide and glutathione and its enzymatic catabolism by GSNO reductase (GSNOR). In this study, we evaluated potential of reversible inhibitor of GSNOR (N6022) in comparison with exogenous GSNO in immunopathogenesis of EAE...
April 22, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29662489/immunological-approaches-towards-cancer-and-inflammation-a-cross-talk
#6
REVIEW
Xinglong Qu, Ying Tang, Shucheng Hua
The inflammation is the protective response of the body against various harmful stimuli; however, the aberrant and inappropriate activation tends to become harmful. The acute inflammatory response tends to resolved once the offending agent is subside but this acute response becomes chronic in nature when the body is unable to successfully neutralized the noxious stimuli. This chronic inflammatory microenvironment is associated with the release of various pro-inflammatory and oncogenic mediators such as nitric oxide (NO), cytokines [IL-1β, IL-2, interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α)], growth factor, and chemokines...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29661611/nasal-polyposis-or-chronic-olfactory-rhinitis
#7
R Jankowski, C Rumeau, P Gallet, D T Nguyen
The concept of chronic rhinosinusitis with or without polyps is founded on the structural and functional unicity of the pituitary mucosa and its united response to environmental aggression by allergens, viruses, bacteria, pollution, etc. The present review sets this concept against the evo-devo three-nose theory, in which nasal polyposis is distinguished as specific to the olfactory nose and in particular to the non-olfactory mucosa of the ethmoid, which is considered to be not a sinus but rather the skull-base bone harboring the olfactory mucosa...
April 13, 2018: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/29660509/glycosylation-enhanced-biocompatibility-of-the-supramolecular-hydrogel-of-an-anti-inflammatory-drug-for-topical-suppression-of-inflammation
#8
Taotao Xiong, Xianglian Li, Yanfang Zhou, Qianqian Song, Renshu Zhang, Lei Lei, Xingyi Li
Intravitreal/periocular injection of triamcinolone acetonide (TA) suspension is a common uveitis treatment, but it displays a high risk for serious side effects (e.g., high intraocular pressure, retinal toxicity). We report here an intravitreally injectable thermosensitive glycosylated TA (TA-SA-Glu) hydrogel, formed by covalently conjugating glucosamine (Glu) with succinate TA (TA-SA), for treating uveitis. The TA-SA-Glu hydrogelator forms a supramolecular hydrogel spontaneously in aqueous solution with a minimal gelation concentration of 0...
April 13, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29577041/peripheral-alveolar-nitric-oxide-concentration-reflects-alveolar-inflammation-in-autoimmune-pulmonary-alveolar-proteinosis
#9
Taizou Hirano, Shinya Ohkouchi, Naoki Tode, Makoto Kobayashi, Manabu Ono, Teruyuki Satoh, Yoichiro Mitsuishi, Akira Watanabe, Masao Tabata, Toshiya Irokawa, Hiromasa Ogawa, Hisatoshi Sugiura, Toshiaki Kikuchi, Keiichi Akasaka, Ryushi Tazawa, Yoshikazu Inoue, Koh Nakata, Hajime Kurosawa, Masakazu Ichinose
Nitric oxide and alveolar macrophage inflammation http://ow.ly/czCx30i12n8.
January 2018: ERJ Open Research
https://www.readbyqxmd.com/read/29553845/nano-gold-displayed-anti-inflammatory-property-via-nf-kb-pathways-by-suppressing-cox-2-activity
#10
Mahmood Ahmad Khan, Mohd Jahir Khan
Rheumatoid arthritis (RA) is an autoimmune inflammatory disease, affecting almost 1% of world population. Although the exact cause of RA is not known but the complex interaction between inflammatory mediators like tumour necrosis factor-α (TNF-α), interleukin-1β (IL-1β), cyclooxygenase-2 (COX-2) and nitric oxide (NO) is accountable for cartilage destruction in joints. Gold is used for arthritis treatment since long without knowing its mechanism of action. Hence, the present study was designed to assess antiarthritic activity of nanogold (AuNGs) in collagen-induced arthritic (CIA) rat model by virtue of decreasing inflammatory mediators and oxidative stress...
March 19, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29519621/nitric-oxide-signaling-in-t-cell-mediated-immunity
#11
REVIEW
Almudena García-Ortiz, Juan M Serrador
Nitric oxide (NO) is a key messenger in the pathogenesis of inflammation, linking innate and adaptive immunity. By targeting signaling molecules, NO from inducible NO synthase (iNOS) and endothelial (e)NOS affects T helper cell differentiation and the effector functions of T lymphocytes, and is a potential target for therapeutic manipulation. In this review we discuss the regulatory actions exerted by NO on T cell functions, focusing on S-nitrosylation as an important post-translational modification by which NO acts as a signaling molecule during T cell-mediated immunity...
April 2018: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/29517999/role-of-polyamines-in-immune-cell-functions
#12
REVIEW
Rebecca S Hesterberg, John L Cleveland, Pearlie K Epling-Burnette
The immune system is remarkably responsive to a myriad of invading microorganisms and provides continuous surveillance against tissue damage and developing tumor cells. To achieve these diverse functions, multiple soluble and cellular components must react in an orchestrated cascade of events to control the specificity, magnitude and persistence of the immune response. Numerous catabolic and anabolic processes are involved in this process, and prominent roles for l-arginine and l-glutamine catabolism have been described, as these amino acids serve as precursors of nitric oxide, creatine, agmatine, tricarboxylic acid cycle intermediates, nucleotides and other amino acids, as well as for ornithine, which is used to synthesize putrescine and the polyamines spermidine and spermine...
March 8, 2018: Medical Sciences: Open Access Journal
https://www.readbyqxmd.com/read/29516577/effects-of-prokineticin-2-on-testicular-inflammation-in-rats
#13
Ying Li, Jiaojiao Wang, Lili Yu, Kai Zhao, Biao Chen, Cuiling Li, Fan Yang, Hongfang Yuan, Huiping Zhang
PROBLEM: Prokineticin 2 (PK2), a pro-inflammatory peptide, is highly expressed in primary spermatocytes. However, systematic research on PK2 and testicular inflammation is lacking to date. METHOD OF STUDY: An experimental autoimmune orchitis (EAO) model was established to detect the expression of PK2 and its receptor (prokineticin receptor 1, PKR1) 50 and 80 days after immunization. PK2 siRNA sequence was injected into the rat rete testis to downregulate the expression of PK2...
June 2018: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29495436/aberrant-glycosylation-augments-the-immuno-stimulatory-activities-of-soluble-calreticulin
#14
Fang-Yuan Gong, Zheng Gong, Cui-Cui Duo, Jun Wang, Chao Hong, Xiao-Ming Gao
Calreticulin (CRT), a luminal resident calcium-binding glycoprotein of the cell, is a tumor-associated antigen involved in tumorigenesis and also an autoantigen targeted by autoantibodies found in patients with various autoimmune diseases. We have previously shown that prokaryotically expressed recombinant murine CRT (rCRT) exhibits strong stimulatory activities against monocytes/macrophages in vitro and potent immunogenicity in vivo, which is partially attributable to self-oligomerization of soluble rCRT. However, even in oligomerized form native CRT (nCRT) isolated from mouse liver is much less active than rCRT, arguing against the possibility that self-oligomerization alone would license potent pro-inflammatory properties to nCRT...
February 27, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29486306/altered-levels-of-exhaled-nitric-oxide-in-rheumatoid-arthritis
#15
Alexandra Thornadtsson, Anders Lind, Tomas Weitoft, Marieann Högman
BACKGROUND: Rheumatoid arthritis (RA) is an autoimmune disorder characterized by bone and joint destruction, but other organ systems can also be involved. Recent studies have suggested that the disease may start in the lungs. Exhaled nitric oxide (FE NO) is a marker of inflammation. The aims of the study were to compare the NO parameters between subjects with RA and healthy control subjects, and to examine whether the NO parameters correlated with lung function and disease activity in the subjects with RA...
June 1, 2018: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29467007/enhanced-glycolysis-contributes-to-the-pathogenesis-of-experimental-autoimmune-neuritis
#16
Ru-Tao Liu, Min Zhang, Chun-Lin Yang, Peng Zhang, Na Zhang, Tong Du, Meng-Ru Ge, Long-Tao Yue, Xiao-Li Li, Heng Li, Rui-Sheng Duan
BACKGROUND: With the recognition of the key roles of cellular metabolism in immunity, targeting metabolic pathway becomes a new strategy for autoimmune disease treatment. Guillain-Barré syndrome (GBS) is an acute immune-mediated inflammatory demyelinating disease of the peripheral nervous system, characterized by inflammatory cell infiltration. These inflammatory cells, including activated macrophages, Th1 cells, and Th17 cells, generally undergo metabolic reprogramming and rely mainly on glycolysis to exert functions...
February 21, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29450408/effect-of-arginase-1-inhibition-on-the-incidence-of-autoimmune-diabetes-in-nod-mice
#17
Luis F Hernandez, Peter Buchwald, Midhat H Abdulreda
Metabolism of the amino acid L-arginine is implicated in many physiological and pathophysiological processes including autoimmune conditions such as type 1 diabetes (T1D). Alternate arginine metabolism through the citrulline-nitric oxide (NO) or the ornithine pathways can lead to proinflammatory or immune regulatory effects, respectively. In this report, we blocked the arginine-ornithine metabolic pathway by inhibiting the enzyme arginase-1 with Nω-hydroxy-nor-arginine (nor-NOHA) to make arginine more available to the alternate citrulline pathway for augmented NO production and increased incidence of autoimmune T1D in female non-obese diabetic (NOD) mice...
January 2018: Current Research in Diabetes & Obesity Journal
https://www.readbyqxmd.com/read/29445292/late-onset-asthma-current-perspectives
#18
REVIEW
Tsunahiko Hirano, Kazuto Matsunaga
Because the pathophysiology of asthma has diverse characteristics, to manage the disease effectively, it is important for clinicians to distinguish among the clinical phenotypes. Among them, adult-onset asthma, that is, late-onset asthma (LOA), is increasing because of the aging of the population. The phenotype of LOA is largely divided into two types according to the presence or absence of eosinophilic inflammation, T-helper (Th)2- and non-Th2-associated LOA. Especially in Th2 LOA related to rhinosinusitis, as pulmonary function at onset is poor and asthma exacerbations occur frequently, it is important to detect this phenotype in the early phase by using a biomarker of Th2-type inflammation such as fractional exhaled nitric oxide (FENO )...
2018: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/29427649/rat-strain-differences-in-peritoneal-immune-cell-response-to-selected-gut-microbiota-a-crossroad-between-tolerance-and-autoimmunity
#19
Veljko Blagojević, Vesna Kovačević-Jovanović, Ivana Ćuruvija, Raisa Petrović, Ivana Vujnović, Vesna Vujić, Stanislava Stanojević
AIMS: Some gut commensals can be protective, whereas others are implicated as necessary for development of inflammatory/autoimmune diseases. Peritoneal immune cells may play an important role in promoting autoimmunity in response to gut microbiota. This study investigated the phenotype and the function of peritoneal immune cells in the autoimmunity-resistant Albino Oxford (AO), and the autoimmunity-prone Dark Agouti (DA) rat strains upon stimulation with their own colonic E. coli or Enterococcus...
March 15, 2018: Life Sciences
https://www.readbyqxmd.com/read/29422898/cyclic-amp-pathway-suppress-autoimmune-neuroinflammation-by-inhibiting-functions-of-encephalitogenic-cd4-t-cells-and-enhancing-m2-macrophage-polarization-at-the-site-of-inflammation
#20
Tatyana Veremeyko, Amanda W Y Yung, Marina Dukhinova, Inna S Kuznetsova, Igor Pomytkin, Alexey Lyundup, Tatyana Strekalova, Natasha S Barteneva, Eugene D Ponomarev
Although it has been demonstrated that cAMP pathway affect both adaptive and innate cell functions, the role of this pathway in the regulation of T-cell-mediated central nervous system (CNS) autoimmune inflammation, such as in experimental autoimmune encephalomyelitis (EAE), remains unclear. It is also unclear how cAMP pathway affects the function of CD4 T cells in vivo at the site of inflammation. We found that adenylyl cyclase activator Forskolin besides inhibition of functions autoimmune CD4 T cells also upregulated microRNA (miR)-124 in the CNS during EAE, which is associated with M2 phenotype of microglia/macrophages...
2018: Frontiers in Immunology
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