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Uveitis, peptide

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https://www.readbyqxmd.com/read/29675414/spondyloarthritis-acute-anterior-uveitis-and-fungi-updating-the-catterall-king-hypothesis
#1
Martin Laurence, Mark Asquith, James T Rosenbaum
Spondyloarthritis is a common type of arthritis which affects mostly adults. It consists of idiopathic chronic inflammation of the spine, joints, eyes, skin, gut, and prostate. Inflammation is often asymptomatic, especially in the gut and prostate. The HLA-B*27 allele group, which presents intracellular peptides to CD8+ T cells, is by far the strongest risk factor for spondyloarthritis. The precise mechanisms and antigens remain unknown. In 1959, Catterall and King advanced a novel hypothesis explaining the etiology of spondyloarthritis: an as-yet-unrecognized sexually acquired microbe would be causing all spondyloarthritis types, including acute anterior uveitis...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29625456/local-s100a8-levels-correlate-with-recurrence-of-experimental-autoimmune-uveitis-and-promote-pathogenic-t-cell-activity
#2
Juan Yun, Tong Xiao, Lei Zhou, Roger W Beuerman, Juanjuan Li, Yuan Zhao, Amir Hadayer, Xiaomin Zhang, Deming Sun, Henry J Kaplan, Hui Shao
Purpose: To investigate the role of damage-associated molecular patterns (DAMPs) in recurrent experimental autoimmune uveitis (EAU). Methods: Recurrent EAU was induced in Lewis rats by interphotoreceptor retinoid-binding protein (IRBP) R16-peptide specific T cells (tEAU). Aqueous humor and serum samples were kinetically collected and DAMPs examined by quantitative proteomics, Western blot analysis, and ELISA. tEAU rats were treated with S100 inhibitor paquinimod followed by disease evaluation...
March 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29572578/crucial-role-of-p2x-7-receptor-for-effector-t-cell-activation-in-experimental-autoimmune-uveitis
#3
Atsunobu Takeda, Hisakata Yamada, Eiichi Hasegawa, Mitsuru Arima, Shoji Notomi, Sayaka Myojin, Takeru Yoshimura, Toshio Hisatomi, Hiroshi Enaida, Ryoji Yanai, Kazuhiro Kimura, Tatsuro Ishibashi, Koh-Hei Sonoda
PURPOSE: To investigate the roles of P2X7 receptors (P2RX7) in the pathogenesis of experimental autoimmune uveoretinitis (EAU). STUDY DESIGN: Experimental. METHODS: Either wild-type (P2rx7+/+ ) or P2rx7-deficient (P2rx7-∕- ) mice were immunized with interphotoreceptor retinoid-binding protein (IRBP) peptide 1-20. Severity of EAU was evaluated clinically and histopathologically. The induction of IRBP-specific proliferation and cytokines in draining lymph nodes was assessed by enzyme-linked immunosorbent assays (ELISA)...
March 23, 2018: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/29559410/angiogenic-and-immunologic-proteins-identified-by-deep-proteomic-profiling-of-human-retinal-and-choroidal-vascular-endothelial-cells-potential-targets-for-new-biologic-drugs
#4
Justine R Smith, Larry L David, Binoy Appukuttan, Phillip A Wilmarth
Diseases that involve retinal or choroidal vascular endothelial cells are leading causes of vision loss: age-related macular degeneration, retinal ischemic vasculopathies and non-infectious posterior uveitis. Proteins differentially expressed by these endothelial cell populations are potential drug targets. We used deep proteomic profiling to define the molecular phenotype of human retinal and choroidal endothelial cells at the protein level. MethodsRetinal and choroidal vascular endothelial cells were separately isolated from five human eye pairs by selection on CD31...
March 17, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29513936/an-amino-acid-motif-in-hla-dr%C3%AE-1-distinguishes-patients-with-uveitis-in-juvenile-idiopathic-arthritis
#5
Anne-Mieke J W Haasnoot, Marco W Schilham, Sylvia Kamphuis, Petra C E Hissink Muller, Arnd Heiligenhaus, Dirk Foell, Kirsten Minden, Roel A Ophoff, Timothy R D J Radstake, Anneke I Den Hollander, Tjitske H C M Reinards, Sanne Hiddingh, Nicoline E Schalij-Delfos, Esther P A H Hoppenreijs, Marion A J van Rossum, Carine Wouters, Rotraud K Saurenmann, J Merlijn van den Berg, Nico M Wulffraat, Rebecca Ten Cate, Joke H de Boer, Sara L Pulit, Jonas J W Kuiper
OBJECTIVES: Uveitis is a visually-debilitating disorder that affects up to 30% of children with the most common forms of juvenile idiopathic arthritis (JIA). The disease mechanisms predisposing only a subgroup of children to uveitis are unknown. To identify genetic susceptibility loci for uveitis in JIA, we conducted a genome-wide association study totalling 522 JIA cases. METHODS: We genotyped two cohorts of JIA patients with ophthalmological follow-up and then imputed the data using a genome-wide imputation reference panel, and an HLA-specific reference panel used for imputing amino acids and HLA types in the major histocompatibility complex (MHC)...
March 7, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29496590/the-immunopathogenesis-of-chronic-and-relapsing-autoimmune-uveitis-lessons-from-experimental-rat-models
#6
REVIEW
Maria Diedrichs-Möhring, Ulrike Kaufmann, Gerhild Wildner
Autoimmune diseases usually follow a relapsing-remitting or a chronic progressive course. To understand the underlying immunopathogenesis we investigated experimental Lewis rat models displaying both disease types, which were only dependent on the autoantigen peptide used for immunization. Retinal S-Antigen-peptide PDSAg induces chronic, monophasic disease, whilst interphotoreceptor retinoid-binding protein (IRBP)-peptide R14 causes a spontaneously relapsing-remitting course. R14-mediated uveitis can be re-induced by immunization; PDSAg-induced disease is even preventable by prior CFA-injection...
February 27, 2018: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/29467002/intraocular-dhodh-inhibitor-pp-001-suppresses-relapsing-experimental-uveitis-and-cytokine-production-of-human-lymphocytes-but-not-of-rpe-cells
#7
Maria Diedrichs-Möhring, Sandy Niesik, Claudia S Priglinger, Stephan R Thurau, Franz Obermayr, Stefan Sperl, Gerhild Wildner
BACKGROUND: Uveitis is a potentially blinding inflammatory disease of the inner eye with a high unmet need for new therapeutic interventions. Here, we wanted to investigate the suppressive effect of the intraocular application of the small molecule dihydroorotate dehydrogenase (DHODH)-inhibitor PP-001 on experimental relapsing rat uveitis and furthermore determine its effect on proliferation and cytokine secretion of human peripheral blood lymphocytes (PBL) and human retinal pigment epithelial (RPE) cells in vitro...
February 21, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29326066/novel-everolimus-loaded-nanocarriers-for-topical-treatment-of-murine-experimental-autoimmune-uveoretinitis-eau
#8
Maren Kasper, Doris Gabriel, Michael Möller, Dirk Bauer, Lena Wildschütz, Herve Courthion, Michael R R Böhm, Martin Busch, Karin Loser, Solon Thanos, Robert Gurny, Arnd Heiligenhaus
In the present study, therapeutic effect of topically applied everolimus (EV)-loaded methoxy-poly(ethylene-glycol)-hexyl substituted poly (lactic acid) (mPEGhexPLA) nanocarriers on experimental autoimmune uveoretinitis (EAU) were investigated. EAU was induced in B10.RIII mice via immunization with human interphotoreceptor retinoid-binding protein peptide 161-180 (hIRBPp161-180) in complete Freund's adjuvant. Everolimus-loaded mPEGhexPLA (EV/mPEGhexPLA) nanocarriers were prepared by using a solvent evaporation method...
March 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29057162/augmenting-endogenous-levels-of-retinal-annexin-a1-suppresses-uveitis-in-mice
#9
Peter J Gardner, Samia Yazid, Joana Ribeiro, Robin R Ali, Andrew D Dick
PURPOSE: The purpose of this study was to examine the expression of the anti-inflammatory protein Annexin A1 (AnxA1) in mice and human retinae during uveitis and to determine whether local administration of human recombinant AnxA1 (hrAnxA1) can suppress uveitis in mice. METHODS: Retinal sections from mice (healthy normal and uveitis) and postmortem human (no history of eye disease ( n = 5) and uveitis ( n = 7)) were stained for AnxA1 expression and imaged by immunofluorescence microscopy...
September 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28970131/self-assembly-of-a-ibuprofen-peptide-conjugate-to-suppress-ocular-inflammation
#10
Xinxin Yu, Zhaoliang Zhang, Jing Yu, Hao Chen, Xingyi Li
In the present study, we designed and synthesized a hydrogelator comprised of ibuprofen (IPF) and GFFY peptide linked through a cleavable ester bond. We found that the synthesized hydrogelator could spontaneously self-assemble into a hydrogel under a heating-cooling process. When the hydrogel was acted upon by an esterase, IPF was released in a sustained manner. Moreover, the hydrogel had significantly elevated anti-inflammatory efficacy, compared with IPF, in RAW264.7 macrophages. The hydrogel showed good cytocompatibility, as well as excellent ocular biocompatibility when instilled topically...
January 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28914568/human-embryonic-stem-cell-derived-mesenchymal-stromal-cells-decrease-the-development-of-severe-experimental-autoimmune-uveitis-in-b10-riii-mice
#11
Yu Qin, Ann M Chan, Yu-Ling Chang, Anna Matynia, Nicholas A Kouris, Erin A Kimbrel, Negin Ashki, Sachin Parikh, Michael B Gorin, Robert Lanza, Ralph D Levinson, Lynn K Gordon
PURPOSE: We investigated the effect of exogenously administered human embryonic stem cell-derived mesenchymal stromal cells (hESC-MSCs) in experimental autoimmune uveitis (EAU) in B10.RIII mice, a murine model of severe uveitis. METHODS: B10.RIII mice were immunized with an uveitogenic peptide, and intraperitoneal injections of 5 million hESC-MSCs per animal were given on the same day. Behavioral light sensitivity assays, histological evaluation, cytokine production, and regulatory T cells were analyzed at the peak of the disease...
September 15, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28802308/vitreous-amyloidosis-with-autonomic-neuropathy-of-the-digestive-tract-associated-with-a-novel-transthyretin-p-gly87arg-variant-in-a-bangladeshi-patient-a-case-report
#12
Benjamin Terrier, Magali Colombat, Caroline Beugnet, Astrid Quéant, Jonathan London, Jean-Baptiste Daudin, Claire Le Jeunne, Luc Mouthon, Dominique Monnet, Cécile Cauquil, Catherine Lacroix, David Adams, Antoine Brézin, Sophie Valleix
BACKGROUND: Hereditary transthyretin amyloidosis is an autosomal dominant inherited disorder, first described in families with sensorimotor and autonomic neuropathy. Since its first description, more than 120 amyloidogenic transthyretin mutations have been reported with various geographic distributions and associated with a wide range of phenotypes involving the peripheral nerve, the heart, the gastrointestinal tract, the eyes, the central nervous system, or the kidneys. In some cases of transthyretin amyloidosis, the first clinical manifestation is vitreous opacity...
August 13, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28743289/inhibition-of-t-cell-mediated-inflammation-in-uveitis-by-a-novel-anti-cd3-antibody
#13
Sunao Sugita, Jun Shimizu, Kenichi Makabe, Hiroshi Keino, Takeshi Watanabe, Masayo Takahashi
BACKGROUND: A novel anti-mouse CD3ε antibody, Dow2, recognizes mouse CD3ε without activating T cells and suppresses T-cell activation. The purpose of this study was to determine whether Dow2 can inhibit T cells in uveitis. METHODS: Experimental autoimmune uveitis (EAU) was induced in mice by immunization with retinal peptides, followed by administration of Dow2. Inflammation was evaluated by color fundus photography, optical coherence tomography, fluorescein angiography, and histology...
July 25, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28659587/effects-of-mesenchymal-stem-cell-derived-exosomes-on-experimental-autoimmune-uveitis
#14
Lingling Bai, Hui Shao, Hongxing Wang, Zhihui Zhang, Chang Su, Lijie Dong, Bo Yu, Xiteng Chen, Xiaorong Li, Xiaomin Zhang
We previously demonstrated that mesenchymal stem cells (MSCs) ameliorated experimental autoimmune uveoretinitis (EAU) in rats. Recently, MSC-derived exosomes (MSC-Exo) were thought to carry functions of MSCs. In this study, we tested the effect of local administration of human MSC-Exo on established EAU in the same species. Rats with EAU induced by immunization with interphotoreceptor retinol-binding protein 1177-1191 peptide were treated by periocular injections of increasing doses of MSC-Exo starting at the disease onset for 7 consecutive days...
June 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28501709/calcium-ion-coordinated-dexamethasone-supramolecular-hydrogel-as-therapeutic-alternative-for-control-of-non-infectious-uveitis
#15
Wei Wu, Zhaoliang Zhang, Taotao Xiong, Wenguang Zhao, Rou Jiang, Hao Chen, Xingyi Li
Supramolecular hydrogels formed by the self-assembly of therapeutic agents have received considerable attention due to their high drug payload and carrier-free features. Herein, we constructed a dexamethasone sodium phosphate (Dex) supramolecular hydrogel in combination with Dex and calcium ion (Ca(2+)) and further demonstrated its therapeutic efficacy in the control of ocular inflammation. The developed supramolecular hydrogel was thoroughly characterized by rheology, TEM, FTIR and XRD. Calcium ions and Dex concentration had a marked influence on the sol-gel transition behaviour of hydrogel and the proposed Dex supramolecular hydrogel displayed thixotropic properties...
May 10, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28384257/serum-th1-and-th17-related-cytokines-and-autoantibodies-in-patients-with-posner-schlossman-syndrome
#16
Jun Zhao, Wenchieh Chen, Xiaosheng Huang, Shiming Peng, Tianhui Zhu, Zhihui Deng, Ping Liang, Hui Chang, Bao Jian Fan
Posner-Schlossman syndrome (PSS) shares some clinical features with uveitis and open angle glaucoma. Cytokines and autoantibodies have been associated with uveitis and open angle glaucoma. However, the role of serum cytokines and autoantibodies in the pathogenesis of PSS remains unknown. This study aimed to evaluate the associations of type 1 T helper (Th1) and Th17 related cytokines and autoantibodies with PSS. Peripheral blood serum samples were collected from 81 patients with PSS and 97 gender- and age-matched healthy blood donors...
2017: PloS One
https://www.readbyqxmd.com/read/27720708/invariant-natural-killer-t-cells-play-dual-roles-in-the-development-of-experimental-autoimmune-uveoretinitis
#17
Masashi Satoh, Ken-Ichi Namba, Nobuyoshi Kitaichi, Noriko Endo, Hirokuni Kitamei, Daiju Iwata, Shigeaki Ohno, Susumu Ishida, Kazunori Onoé, Hiroshi Watarai, Masaru Taniguchi, Tatsuro Ishibashi, Joan Stein-Streilein, Koh-Hei Sonoda, Luc Van Kaer, Kazuya Iwabuchi
Experimental autoimmune uveoretinitis (EAU) represents an experimental model for human endogenous uveitis, which is caused by Th1/Th17 cell-mediated inflammation. Natural killer T (NKT) cells recognize lipid antigens and produce large amounts of cytokines upon activation. To examine the role of NKT cells in the development of uveitis, EAU was elicited by immunization with a peptide from the human interphotoreceptor retinoid-binding protein (hIRBP1-20 ) in complete Freund's adjuvant and histopathology scores were evaluated in C57BL/6 (WT) and NKT cell-deficient mice...
December 2016: Experimental Eye Research
https://www.readbyqxmd.com/read/27713770/the-role-of-vitamin-d-in-immuno-inflammatory-responses-in-ankylosing-spondylitis-patients-with-and-without-acute-anterior-uveitis
#18
T C Mitulescu, C Stavaru, L M Voinea, L M Banica, C Matache, D Predeteanu
Hypothesis:Abnormal Vitamin D (Vit D) level could have consequences on the immuno-inflammatory processes in Ankylosing Spondylitis (AS). Aim:The purpose of this study was to analyze the role of Vitamin D in the interplay between immune and inflammation effectors in AS associated-Acute Anterior Uveitis (AAU). Methods and Results:25-hydroxyvitamin D (Vit D), LL-37 peptide, IL-8 and Serum Amyloid A (SAA) were identified and quantified in the serum/ plasma of thirty-four AS patients [eleven AS patients presenting AAU (AAU AS patients) and twenty-three AS patients without AAU (wAAU AS patients)] and eighteen healthy individuals (Control) using enzyme-linked immunosorbent assay...
January 2016: Journal of Medicine and Life
https://www.readbyqxmd.com/read/27703302/socs1-mimetic-peptide-suppresses-chronic-intraocular-inflammatory-disease-uveitis
#19
Chang He, Cheng-Rong Yu, Mary J Mattapallil, Lin Sun, Joseph Larkin Iii, Charles E Egwuagu
Uveitis is a potentially sight-threatening disease characterized by repeated cycles of remission and recurrent inflammation. The JAK/STAT pathway regulates the differentiation of pathogenic Th1 and Th17 cells that mediate uveitis. A SOCS1 mimetic peptide (SOCS1-KIR) that inhibits JAK2/STAT1 pathways has recently been shown to suppress experimental autoimmune uveitis (EAU). However, it is not clear whether SOCS1-KIR ameliorated uveitis by targeting JAK/STAT pathways of pathogenic lymphocytes or via inhibition of macrophages and antigen-presenting cells that also enter the retina during EAU...
2016: Mediators of Inflammation
https://www.readbyqxmd.com/read/27415793/gut-microbial-alterations-associated-with-protection-from-autoimmune-uveitis
#20
Yukiko K Nakamura, Christina Metea, Lisa Karstens, Mark Asquith, Henry Gruner, Cathleen Moscibrocki, Iris Lee, Colin J Brislawn, Janet K Jansson, James T Rosenbaum, Phoebe Lin
PURPOSE: To investigate the contribution of the gut microbiota to the pathogenesis of uveitis. METHODS: Experimental autoimmune uveitis (EAU) in B10.RIII mice was induced using interphotoreceptor binding protein peptide. Mice were treated with oral or intraperitoneal (IP) antibiotics. Effector (Teff) and regulatory (Treg) T lymphocytes were identified using flow cytometry; 16S rRNA gene sequencing and qPCR were performed on gastrointestinal (GI) contents. RESULTS: Broad-spectrum (four antibiotics given simultaneously) oral, but not IP, antibiotics reduced mean uveitis clinical scores significantly compared with water-treated animals (0...
July 1, 2016: Investigative Ophthalmology & Visual Science
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