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https://www.readbyqxmd.com/read/29908492/treatment-of-guillain-barr%C3%A3-syndrome-with-bifidobacterium-infantis-through-regulation-of-t-helper-cells-subsets
#1
Peng Shi, Hongdang Qu, Di Nian, Yuhua Chen, Xiaolin Liu, Qiang Li, Qianqian Li, Chun Wang, Ming Ye, Bo Ma
BACKGROUND: Guillain-Barré syndrome (GBS) is a rare, autoimmune-mediated disease. The use of Bifidobacterium is reportedly effective in alleviating GBS since they act by regulating T helper (Th) cells. OBJECTIVES: In this study, we explored the differentiation of T helper cell subsets in patients with GBS. We also evaluated the effect of GBS on Bifidobacterium levels in patients and the likely protective influence of this bacterium in alleviating the disease in an animal model...
June 13, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29908447/fas-activity-mediates-airway-inflammation-during-mouse-adenovirus-type-1-respiratory-infection
#2
Laura J Adkins, Caitlyn T Molloy, Jason B Weinberg
CD8 T cells play a key role in clearance of mouse adenovirus type 1 (MAV-1) from the lung and contribute to virus-induced airway inflammation. We tested the hypothesis that interactions between Fas ligand (FasL) and Fas mediate the antiviral and proinflammatory effects of CD8 T cells. FasL and Fas expression were increased in the lungs of C57BL/6 (B6) mice during MAV-1 respiratory infection. Viral replication and weight loss were similar in B6 and Fas-deficient (lpr) mice. Histological evidence of pulmonary inflammation was similar in B6 and lpr mice, but lung mRNA levels and airway proinflammatory cytokine concentrations were lower in MAV-1-infected lpr mice compared to infected B6 mice...
June 13, 2018: Virology
https://www.readbyqxmd.com/read/29908376/the-increased-level-of-tspan5-in-villi-suggests-more-proliferation-and-invasiveness-of-trophoblasts-in-tubal-pregnancy
#3
Tianyang Gao, Yingqiu Liang, Haiyu Tang, Li Quan
OBJECTIVE: This study was to determinate the expression of Tspan5 in tubal ectopic implantation sites and to explore the correlation of the expressive level of Tspan5 at maternal-fetal interface and the occurrence of tubal ectopic pregnancy. STUDY DESIGN: This is a retrospective study. Trophoblastic and endometrial tissues were collected from tubal ectopic pregnancy(Total of 40), and intrauterine pregnancy(Total of 41), who had voluntary abortion, non-pregnancy women(Total of 12), who recieved an diagnostic uterine curettage before IVF-ET for male infertility...
June 5, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29908231/haploidentical-bone-marrow-transplantation-with-post-transplant-cyclophosphamide-bendamustine-in-pediatric-and-young-adult-patients-with-hematologic-malignancies
#4
Emmanuel Katsanis, Lauren N Sapp, Nicole Varner, Shannon Koza, Baldassarre Stea, Yi Zeng
More than half of patients undergoing hematopoietic cell transplantation at our institution are ethnic or racial minorities, making the search for matched unrelated donors more challenging. Since the introduction of haploidentical bone marrow transplant (haplo-BMT) into our pediatric BMT program in 2015, 69.2% of the recipients have been minorities. Herein, we describe our experience with the first thirteen pediatric and young adult patients with hematologic malignancies who have undergone T-cell replete haplo-BMT following myeloablative conditioning (MAC) at our institution...
June 13, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29908204/lipase-mediated-direct-in-situ-ring-opening-polymerization-of-%C3%AE%C2%B5-caprolactone-formed-by-a-chemo-enzymatic-method
#5
Yuanyuan Zhang, Peiyu Lu, Qinghua Sun, Tao Li, Lanjie Zhao, Xin Gao, Fanye Wang, Junhong Liu
A novel method to synthesize poly(ε-caprolactone) (PCL) through a three-step, lipase-mediated chemo-enzymatic reaction from cyclohexanone using an immobilized lipase from Trichosporon laibacchii (T. laibacchii) CBS5791 was developed. The immobilized preparation with 1280 U· g-1 used here was obtained by a method of purification and in situ immobilization where the crude intracellular lipase (cell homogenate) was subjected to partial purification by an aqueous two-phase system (ATPS) consisting of 12% (w/w) polyethylene glycol (PEG) 4000 and 13% (w/w) potassium phosphate (K2 HPO4 ) and then in situ immobilization directly on diatomite from the top PEG-rich phase of ATPS...
June 13, 2018: Journal of Biotechnology
https://www.readbyqxmd.com/read/29908151/vaccination-with-a-cd4-and-cd8-t-cell-epitopes-based-recombinant-chimeric-protein-derived-from-leishmania-infantum-proteins-confers-protective-immunity-against-visceral-leishmaniasis
#6
Daniel S Dias, Patrícia A F Ribeiro, Vívian T Martins, Daniela P Lage, Lourena E Costa, Miguel A Chávez-Fumagalli, Fernanda F Ramos, Thaís T O Santos, Fernanda Ludolf, Jamil S Oliveira, Tiago A O Mendes, Eduardo S Silva, Alexsandro S Galdino, Mariana C Duarte, Bruno M Roatt, Daniel Menezes-Souza, Antonio L Teixeira, Eduardo A F Coelho
Vaccination seems to be the best approach to control visceral leishmaniasis (VL). Resistance against infection is based on the development of a Th1 immune response characterized by the production of interferons-γ (IFN-γ), interleukin-12 (IL-12), granulocyte-macrophage-colony-stimulating factor (GM-CSF), and tumor necrosis factor-α (TNF-α), among others. A number of antigens have been tested as potential targets against the disease; few of them are able to stimulate human immune cells. In the present study, 1 prediction of MHC class I and II molecules-specific epitopes in the amino acid sequences of 3 Leishmania proteins: 1 hypothetical, prohibitin, and small glutamine-rich tetratricopeptide repeat-containing proteins, was performed using bioinformatics tools, and a T-cell epitopes-based recombinant chimeric protein was constructed, synthetized and purified to be evaluated in invitro and in vivo experiments...
May 22, 2018: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/29908145/influence-of-multiple-delays-in-brain-tumor-and-immune-system-interaction-with-t11-target-structure-as-a-potent-stimulator
#7
Subhas Khajanchi, Sandip Banerjee
We present a mathematical model which describes the growth of malignant gliomas in presence of immune responses by considering the role of immunotherapeutic agent T11 target structure (T11TS). The model consider five populations, namely, glioma cells, macrophages, cytotoxic T-lymphocytes, TGF - β and IFN - γ. The model system has highly nonlinear terms with four discrete time lags, but remains tractable. The goal of this work is to better understand the effect of multiple delays on the interaction between gliomas and immune components in conjunction with an administration of T11 target structure...
June 13, 2018: Mathematical Biosciences
https://www.readbyqxmd.com/read/29908119/cd4-foxp3-regulatory-t-cell-mediated-immunomodulation-by-anti-depressants-inhibiting-acid-sphingomyelinase
#8
Jürgen Schneider-Schaulies, Niklas Beyersdorf
Acid sphingomyelinase (ASM) is the rate-limiting enzyme cleaving sphingomyelin into ceramide and phosphorylcholin. CD4+ Foxp3+ regulatory T (Treg) cells depend on CD28 signaling for their survival and function, a receptor that activates the ASM. Both, basal and CD28-induced ASM activities are higher in Treg cells than in conventional CD4+ T (Tconv) cells. In ASM-deficient (Smpd1-/-) as compared to wt mice, membranes of T cells contain 7-10-fold more sphingomyelin and 2-3-fold more ceramide, and are in a state of higher order than membranes of T cells from wt mice, which may facilitate their activation...
June 1, 2018: Biological Chemistry
https://www.readbyqxmd.com/read/29908084/extranodal-nk-t-cell-lymphoma-nasal-type-clinical-features-outcome-and-prognostic-factors-in-101-cases
#9
Yi-Jiun Su, Po-Nan Wang, Hung Chang, Lee-Yung Shih, Tung-Liang Lin, Ming-Chung Kuo, Wen-Yu Chuang, Jin-Hou Wu, Tzung-Chih Tang, Yu-Shin Hung, Po Dunn, Hsiao-Wen Kao
OBJECTIVES: We aimed to define the clinical features, outcome and prognostic factors for extranodal NK/T cell lymphoma (ENKTL) patients in Taiwan. METHODS: We retrospectively reviewed 101 ENKTL patients diagnosed between February 1998 and October 2015. RESULTS: The median age of 101 patients was 52 years old (range 22-85), 76.2% of patients were Ann-Arbor stage I/II disease. The five-year progression-free survival (PFS) and overall survival (OS) were 49...
June 16, 2018: European Journal of Haematology
https://www.readbyqxmd.com/read/29908068/macrophages-in-patients-with-recurrent-endometrial-polyps-could-exacerbate-th17-responses
#10
Yali Zhu, Zhihong Liu, Miaomiao Du, Lisha Yi, Guifang Gong, Xiang Tang
Endometrial polyps (EPs) are outgrowths in the endometrium with unknown etiology. The fact that EPs can often recur after surgical removal suggests that EPs are not induced by random events but by continuous or recurrent processes in the patients. We previously demonstrated that the risk of EP development was positively associated with overactive Th17 responses. However, the requirements of Th17 upregulation are yet unclear. Here, we recruited twenty-six females with symptomatic EP and twenty-four females without EP, and peripheral mononuclear cells were harvested for the examination of circulating immunity...
June 16, 2018: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29908067/effects-of-type-i-interferons-in-malaria
#11
REVIEW
Ismail Sebina, Ashraful Haque
Type I interferons are a family of cytokines with a wide range of biological activities including anti-viral and immune-regulatory functions. Here, we focus on the protozoan parasitic disease, malaria, and examine the effects of type I IFN-signalling during Plasmodium infection of humans and experimental mice. Since the 1960's, there have been many studies in this area, but a simple explanation for the role of type I IFN has not emerged. Although epidemiological data are consistent with roles for type I IFN in influencing malaria disease severity, functional proof of this remains sparse in humans...
June 16, 2018: Immunology
https://www.readbyqxmd.com/read/29907957/laminin-%C3%AE-1-orchestrates-vegfa-functions-in-the-ecosystem-of-colorectal-carcinoma
#12
E Mammadova-Bach, T Rupp, C Spenlé, I Jivkov, P Shankaranarayanan, A Klein, L Pisarsky, A Méchine-Neuville, G Cremel, M Kedinger, O De Wever, N Ambartsumian, S Robine, E Pencreach, D Guenot, P Simon-Assmann, J G Goetz, G Orend, O Lefebvre
Tumor stroma remodeling is a key feature of malignant tumors and can promote cancer progression. Laminins are major constituents of basement membranes that physically separate the epithelium from the underlying stroma. By employing mouse models expressing high and low levels of the laminin α1 chain (LMα1), we highlighted its implication in a tumor-stroma crosstalk, thus leading to increased colon tumor incidence, angiogenesis and tumor growth. The underlying mechanism involves attraction of carcinoma-associated fibroblasts by LMα1, VEGFA expression triggered by the complex integrin α2β1-CXCR4 and binding of VEGFA to LM-111, which in turn promotes angiogenesis, tumor cell survival and proliferation...
June 15, 2018: Biology of the Cell
https://www.readbyqxmd.com/read/29907880/ag-specific-cd4-t-cells-promote-innate-immune-responses-in-liver-ischemia-reperfusion-injury
#13
Jianhua Rao, Feng Cheng, Shikun Yang, Yuan Zhai, Ling Lu
No abstract text is available yet for this article.
June 15, 2018: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/29907875/a-novel-homozygous-missense-mutation-in-the-sh3-binding-motif-of-stambp-causing-microcephaly-capillary-malformation-syndrome
#14
Ikumi Hori, Fuyuki Miya, Yutaka Negishi, Ayako Hattori, Naoki Ando, Keith A Boroevich, Nobuhiko Okamoto, Mitsuhiro Kato, Tatsuhiko Tsunoda, Mami Yamasaki, Yonehiro Kanemura, Kenjiro Kosaki, Shinji Saitoh
Microcephaly-capillary malformation syndrome is a congenital and neurodevelopmental disorder caused by biallelic mutations in the STAMBP gene. Here we identify the novel homozygous mutation located in the SH3 binding motif of STAMBP (NM_006463.4) (c.707C>T: p.Ser236Phe) through whole-exome sequencing. The case patient was a 2-year-old boy showing severe global developmental delay, progressive microcephaly, refractory seizures, dysmorphic facial features, and multiple capillary malformations. Immunoblot analysis of patient-derived lymphoblastoid cell lines (LCLs) revealed a severe reduction in STAMBP expression, indicating that Ser236Phe induces protein instability...
June 15, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29907870/synergistic-activation-of-pro-inflammatory-type-2-cd8-t-lymphocytes-by-lipid-mediators-in-severe-eosinophilic-asthma
#15
Bart Hilvering, Timothy S C Hinks, Linda Stöger, Emanuele Marchi, Maryam Salimi, Rahul Shrimanker, Wei Liu, Wentao Chen, Jian Luo, Simei Go, Timothy Powell, Jennifer Cane, Samantha Thulborn, Ayako Kurioka, Tianqi Leng, Jamie Matthews, Clare Connolly, Catherine Borg, Mona Bafadhel, Christian B Willberg, Adaikalavan Ramasamy, Ratko Djukanović, Graham Ogg, Ian D Pavord, Paul Klenerman, Luzheng Xue
Human type-2 CD8+ T cells are a cell population with potentially important roles in allergic disease. We investigated this in the context of severe asthma with persistent airway eosinophilia-a phenotype associated with high exacerbation risk and responsiveness to type-2 cytokine-targeted therapies. In two independent cohorts we show that, in contrast to Th2 cells, type-2 cytokine-secreting CD8+ CRTH2+ (Tc2) cells are enriched in blood and airways in severe eosinophilic asthma. Concentrations of prostaglandin D2 (PGD2 ) and cysteinyl leukotriene E4 (LTE4 ) are also increased in the airways of the same group of patients...
June 15, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29907869/bves-is-required-for-maintenance-of-colonic-epithelial-integrity-in-experimental-colitis-by-modifying-intestinal-permeability
#16
Yash A Choksi, Vishruth K Reddy, Kshipra Singh, Caitlyn W Barrett, Sarah P Short, Bobak Parang, Cody E Keating, Joshua J Thompson, Thomas G Verriere, Rachel E Brown, M Blanca Piazuelo, David M Bader, M Kay Washington, Mukul K Mittal, Thomas Brand, Alain P Gobert, Lori A Coburn, Keith T Wilson, Christopher S Williams
Blood vessel epicardial substance (BVES), or POPDC1, is a tight junction-associated transmembrane protein that modulates epithelial-to-mesenchymal transition (EMT) via junctional signaling pathways. There have been no in vivo studies investigating the role of BVES in colitis. We hypothesized that BVES is critical for maintaining colonic epithelial integrity. At baseline, Bves -/- mouse colons demonstrate increased crypt height, elevated proliferation, decreased apoptosis, altered intestinal lineage allocation, and dysregulation of tight junctions with functional deficits in permeability and altered intestinal immunity...
June 15, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29907868/t-cell-directed-il-17-production-by-lung-granular-%C3%AE-%C3%AE-t-cells-is-coordinated-by-a-novel-il-2-and-il-1%C3%AE-circuit
#17
Antoine Ménoret, James A Buturla, Maria M Xu, Julia Svedova, Sanjeev Kumar, Vijay A K Rathinam, Anthony T Vella
Immune-mediated lung is considered the result of an exacerbated innate injury immune response, although a role for adaptive lymphocytes is emerging. αβ T cells specific for S. aureus enterotoxin A orchestrate a Tγδ17 response during lung injury. However, the mechanism driving IL-17 production is unclear. Here, we show a role for IL-2 triggering IL-17 production by lung granular γδ T cells as IL-17 synthesis and neutrophil recruitment was reduced by IL-2 blocking mAbs in vitro and in vivo. Mass cytometry analysis revealed that lung γδ T cells responded directly to IL-2 as evident from STAT5 phosphorylation and RoRγt expression...
June 15, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29907867/the-common-%C3%AE-chain-cytokine-il-7-promotes-immunopathogenesis-during-fungal-asthma
#18
Kristen M Reeder, Chad W Dunaway, Jonathan P Blackburn, Zhihong Yu, Sadis Matalon, Annette T Hastie, Elizabeth J Ampleford, Deborah A Meyers, Chad Steele
Asthmatics sensitized to fungi are reported to have more severe asthma, yet the immunopathogenic pathways contributing to this severity have not been identified. In a pilot assessment of human asthmatics, those subjects sensitized to fungi demonstrated elevated levels of the common γ-chain cytokine IL-7 in lung lavage fluid, which negatively correlated with the lung function measurement PC20. Subsequently, we show that IL-7 administration during experimental fungal asthma worsened lung function and increased the levels of type 2 cytokines (IL-4, IL-5, IL-13), proallergic chemokines (CCL17, CCL22) and proinflammatory cytokines (IL-1α, IL-1β)...
June 15, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29907866/intestinal-damage-precedes-mucosal-immune-dysfunction-in-siv-infection
#19
Tiffany Hensley-McBain, Alicia R Berard, Jennifer A Manuzak, Charlene J Miller, Alexander S Zevin, Patricia Polacino, Jillian Gile, Brian Agricola, Mark Cameron, Shiu-Lok Hu, Jacob D Estes, R Keith Reeves, Jeremy Smedley, Brandon F Keele, Adam D Burgener, Nichole R Klatt
HIV and pathogenic SIV infection are characterized by mucosal dysfunction including epithelial barrier damage, loss of Th17 cells, neutrophil infiltration, and microbial translocation with accompanying inflammation. However, it is unclear how and when these contributing factors occur relative to one another. In order to determine whether any of these features initiates the cycle of damage, we longitudinally evaluated the kinetics of mucosal and systemic T-cell activation, microbial translocation, and Th17 cell and neutrophil frequencies following intrarectal SIV infection of rhesus macaques...
June 15, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29907809/killer-cell-immunoglobulin-like-receptor-ligand-mismatching-and-outcome-after-haploidentical-transplantation-with-post-transplant-cyclophosphamide
#20
Avichai Shimoni, Myriam Labopin, Francesca Lorentino, Maria Teresa Van Lint, Yener Koc, Zafer Gülbas, Johanna Tischer, Benedetto Bruno, Didier Blaise, Pietro Pioltelli, Boris Afanasyev, Fabio Ciceri, Mohamad Mohty, Arnon Nagler
Haploidentical stem cell transplantation with T cell-replete grafts and post-transplant cyclophosphamide (PTCy) is increasingly used with encouraging outcome. Natural killer (NK) cell alloreactivity, predicted by missing killer cell immunoglobulin-like receptor (KIR) ligands in the recipient that are present in their donor improves outcome of T cell-depleted haploidentical transplants. We explored the role of KIR ligand mismatching in 444 acute leukemia patients after T cell-replete transplants with PTCy. Thirty-seven percent of all patients had KIR ligand mismatching...
June 15, 2018: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
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