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Immunologic Research

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https://www.readbyqxmd.com/read/27878564/the-role-of-b7-family-costimulatory-molecules-and-indoleamine-2-3-dioxygenase-in-primary-sj%C3%A3-gren-s-syndrome-and-systemic-sclerosis
#1
Nóra Legány, László Berta, László Kovács, Attila Balog, Gergely Toldi
B7 costimulatory molecules are present on antigen-presenting cells (APCs) and influence intracellular expression of indoleamine 2,3-dioxygenase (IDO), a molecule with important immunoregulatory functions. We determined the frequency of activated (CD11b+) monocytes expressing B7-1, B7-2, B7-H1, and B7-H2 molecules, and that of CD3+ and CD4+ T cells expressing the corresponding CD28, CTLA-4, PD-1, and ICOS receptors in peripheral blood samples of 20 healthy adults and 9 SSc and 15 pSS patients using flow cytometry...
November 23, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27838822/intrinsic-jnk-mapk-pathway-involvement-requires-daf-16-mediated-immune-response-during-shigella-flexneri-infection-in-c-elegans
#2
Shanmugam Marudhupandiyan, Krishnaswamy Balamurugan
The c-Jun N-terminal kinase-mitogen-activated protein kinase (JNK-MAPK) pathway assists in modulating signals for growth, survival, and metabolism, thereby coordinating many cellular events during normal and stress conditions. To understand the role of the JNK-MAPK pathway during bacterial infection, an in vivo model organism Caenorhabditis elegans was used. In order to check the involvement of the JNK-MAPK pathway, the survival rate of C. elegans wild type (WT), and JNK-MAPK pathway mutant worms' upon exposure to selective Gram-positive and Gram-negative pathogenic bacteria, was studied...
November 12, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27837410/effect-of-cd40-cd40l-signaling-on-il-10-producing-regulatory-b-cells-in-chinese-children-with-henoch-sch%C3%A3-nlein-purpura-nephritis
#3
Baohui Yang, Xiongjun Tan, Xiao Xiong, Daoqi Wu, Gaofu Zhang, Mo Wang, Shifang Dong, Wei Liu, Haiping Yang, Qiu Li
The aim of the present study was to examine the role and mechanism of interleukin-10 (IL-10)-producing regulatory B cells (B10 cells) in the pathogenesis of Henoch-Schönlein purpura nephritis (HSPN). We examined the percentage of B10 cells, CD19(+)CD24(hi)CD38(hi) B cells, CD19(+)CD24(hi)CD27(+) B cells, Th17 cells, and T regulatory (Treg) cells within the peripheral blood mononuclear cell (PBMC) population in healthy subjects and HSP/HSPN patients. The percentage of B10 cells and CD19(+)CD24(hi)CD38(hi) B cells was reduced in HSPN patients and that of CD19(+)CD24(hi)CD27(+) B cells was decreased only in HSPN patients with hematuria and proteinuria or massive proteinuria...
November 11, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27817149/individualized-correction-of-insulin-measurement-in-hemolyzed-serum-samples
#4
Zhi-Qi Wu, Ju Lu, Huanhuan Chen, Wensen Chen, Hua-Guo Xu
Insulin measurement plays a key role in the investigation of patients with hypoglycemia, subtype classification of diabetes mellitus, insulin resistance, and impaired beta cell function. However, even slight hemolysis can negatively affect insulin measurement due to RBC insulin-degrading enzyme (IDE). Here, we derived and validated an individualized correction equation in an attempt to eliminate the effects of hemolysis on insulin measurement. The effects of hemolysis on insulin measurement were studied by adding lysed self-RBCs to serum...
November 5, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27743128/new-automated-indirect-immunofluorescent-antinuclear-antibody-testing-compares-well-with-established-manual-immunofluorescent-screening-and-titration-for-antinuclear-antibody-on-hep-2-cells
#5
M Daves, J Blecken, T Matthias, A Frey, V Perkmann, A Dall Acqua, A Joos, S Platzgummer
The IIF using the HEp-2 cell substrate should be still considered the "gold standard" techniques for determination of antinuclear antibody (ANA). Standardization and automation can be considered to be still in progress. Aim of this study was to evaluate the performance of the commercially automated indirect immunofluorescent antinuclear HEp-2 antibody assay. The study was designed to compare two commercially available HEp-2 ANA by indirect immunofluorescent antibody assays using a sensitivity panel (120 clinically determined patients) and a specificity panel consisting of 78 clinically confirmed negative patients...
October 14, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27718110/hiv-1-derived-single-stranded-rna-acts-as-activator-of-human-neutrophils
#6
Diana M Giraldo, Juan C Hernandez, Silvio Urcuqui-Inchima
Neutrophils are key effector cells of the innate immune system and are involved in the host defense against invading pathogens such as viruses. Recently, it was reported that HIV-1-neutrophil interaction triggers neutrophil activation and promotes expression of Toll-like receptors (TLRs). Here, we assessed the role of single-stranded RNA40 (ssRNA40) derived from HIV-1 in neutrophil activation. We observed functional activation of neutrophils in response to HIV-1-derived ssRNA40 based on the expression of TLR7/8, RIG-I, and MDA5, induction of cytokines (IL-6 and TNF-α), and the production of reactive oxygen species (ROS)...
October 7, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27704462/genome-wide-scan-in-two-groups-of-hiv-infected-patients-treated-with-dendritic-cell-based-immunotherapy
#7
Ronald Moura Rodrigues, Monserrat Plana, Felipe Garcia, Luisa Zupin, Louise Kuhn, Sergio Crovella
We performed a retrospective genome-wide association study in HIV-infected individuals who were treated with dendritic cell-based immunotherapy in clinical trials performed by two research groups (Spain and Brazil). We aimed to identify host genetic variants influencing treatment response. The Illumina Human Core Exome 12 v 1.0 Bead Chip with over 250,000 markers was used to analyze genetic factors affecting treatment response. Additionally, we performed a meta-analysis of the results obtained from Spanish and Brazilian patients...
October 4, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27699580/inflammasomes-and-its-importance-in-viral-infections
#8
Gaurav Shrivastava, Moisés León-Juárez, Julio García-Cordero, David Eduardo Meza-Sánchez, Leticia Cedillo-Barrón
A complex interplay between pathogen and host determines the immune response during viral infection. A set of cytosolic sensors are expressed by immune cells to detect viral infection. NOD-like receptors (NLRs) comprise a large family of intracellular pattern recognition receptors. Members of the NLR family assemble into large multiprotein complexes, termed inflammasomes, which induce downstream immune responses to specific pathogens, environmental stimuli, and host cell damage. Inflammasomes are composed of cytoplasmic sensor molecules such as NLRP3 or absent in melanoma 2 (AIM2), the adaptor protein ASC (apoptosis-associated speck-like protein containing caspase recruitment domain), and the effector protein procaspase-1...
October 3, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27677768/cd19-tim-1-b-cells-are-decreased-and-negatively-correlated-with-disease-severity-in-myasthenia-gravis-patients
#9
Yong Zhang, Xiuying Zhang, Yan Xia, Xiao Jia, Hao Li, Yanyan Zhang, Zhen Shao, Ning Xin, Mingfeng Guo, Jing Chen, ShuangShuang Zheng, YuZhong Wang, Linlin Fu, Chenghua Xiao, Deqin Geng, Yonghai Liu, Guiyun Cui, Ruiguo Dong, Xiaoyu Huang, Tingyan Yu
T cell immunoglobulin mucin domain-1(Tim-1) was recently identified to be critical and essential for optimal regulatory B cells function in maintaining immune tolerance. We aimed to measure the expression levels of Tim-1 on B cells from patients with Myasthenia Gravis (MG) and to investigate whether the expression of Tim-1 is associated with pathogenesis of MG. A total of 34 patients with MG (18 generalized MG (GMG) and 16 ocular MG (OMG) and 24 healthy donors were recruited in this study. The quantitative myasthenia gravis score (QMGS) was used to evaluate the clinical severity...
September 28, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27665460/effect-of-continuous-positive-airway-pressure-cpap-therapy-on-il-23-in-patients-with-obstructive-sleep-apnea
#10
Murat Can, Fırat Uygur, Hakan Tanrıverdi, Bilgehan Acıkgoz, Barıs Alper, Berrak Guven
Obstructive sleep apnea syndrome (OSAS) is a common sleep disorder characterized by repeated episodes of apnea and hypopnea during sleep. Continuous positive airway pressure (CPAP) is the most effective method for treating OSAS and alleviating the patients' symptoms. The aim of this study was to assess the effect of 3-month CPAP therapy on serum levels of IL-23 in patients with OSAS. Twenty-three patients with newly diagnosed moderate-to-severe OSAS who had not yet started nasal CPAP treatment were prospectively enrolled...
September 24, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27665459/the-role-of-adenosinergic-pathway-in-human-autoimmune-diseases
#11
Ke Dong, Zhao-Wei Gao, Hui-Zhong Zhang
Autoimmune diseases are characterized by the abnormal immune response against self-tissue, which are caused by the failure of nature immune homeostasis. Nature immune homeostasis represents the normal state of appropriate immune response to nonself-antigen and unresponsiveness to self-antigens. In normal situation, immune homeostasis is regulated by immunosuppressive signal and immunostimulating signal together. Accumulating data have demonstrated that the adenosinergic pathway played key roles in immune suppression and shield body from an excessive inflammatory response...
September 24, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27665458/asia-syndrome-calcinosis-cutis-and-chronic-kidney-disease-following-silicone-injections-a-case-based-review
#12
Giuseppe Barilaro, Claudia Spaziani Testa, Antonella Cacciani, Giuseppe Donato, Mira Dimko, Amalia Mariotti
An immunologic adjuvant is a substance that enhances the antigen-specific immune response preferably without triggering one on its own. Silicone, a synthetic polymer used for reconstructive and cosmetic purposes, can cause, once injected, local and/or systemic reactions and trigger manifestations of autoimmunity, occasionally leading to an overt autoimmune disease. Siliconosis, calcinosis cutis with hypercalcemia and chronic kidney disease have all been reported in association with silicone injection. Here, we describe a case of autoimmune/auto-inflammatory syndrome induced by adjuvants, calcinosis cutis and chronic kidney disease after liquid silicone multiple injections in a young man who underwent a sex reassignment surgery, followed by a review of the literature...
September 24, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27665457/novel-clinical-and-therapeutic-aspects-in-autoimmunity
#13
Howard Amital, Abdulla Watad, Zoltán Szekanecz
No abstract text is available yet for this article.
September 24, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27651346/erratum-to-severe-somatoform-and-dysautonomic-syndromes-after-hpv-vaccination-case-series-and-review-of-literature
#14
Beniamino Palmieri, Dimitri Poddighe, Maria Vadalà, Carmen Laurino, Carla Carnovale, Emilio Clementi
No abstract text is available yet for this article.
September 20, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27647146/biomarkers-and-pathogenic-mechanisms-in-autoimmunity
#15
Edward K L Chan, Elias Toubi, Karsten Conrad
No abstract text is available yet for this article.
September 19, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27629117/immunological-characterization-of-the-early-human-fracture-hematoma
#16
Paula Hoff, T Gaber, C Strehl, K Schmidt-Bleek, A Lang, D Huscher, G R Burmester, G Schmidmaier, C Perka, G N Duda, F Buttgereit
The initial inflammatory phase of fracture healing is of great importance for the clinical outcome. We aimed to develop a detailed time-dependent analysis of the initial fracture hematoma. We analyzed the composition of immune cell subpopulations by flow cytometry and the concentration of cytokines and chemokines by bioplex in 42 samples from human fractures of long bones <72 h post-trauma. The early human fracture hematoma is characterized by maturation of granulocytes and migration of monocytes/macrophages and hematopoietic stem cells...
September 14, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27624104/erratum-to-a-novel-bedside-test-for-acpa-the-ccpoint-test-is-moving-the-laboratory-to-the-rheumatologist-s-office
#17
Gisele Zandman-Goddard, Alessandra Soriano, Boris Gilburd, Merav Lidar, Shaye Kivity, Ron Kopilov, Pnina Langevitz, Yehuda Shoenfeld, Nancy Agmon-Levin
No abstract text is available yet for this article.
September 13, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27618831/clinical-association-of-mixed-connective-tissue-disease-and-granulomatosis-with-polyangiitis-a-case-report-and-systematic-screening-of-anti-u1rnp-and-anti-pr3-auto-antibody-double-positivity-in-ten-european-hospitals
#18
Amandine Tubery, Françoise Fortenfant, Bernard Combe, Isabelle Abreu, Xavier Bossuyt, Pascale Chretien, Sophie Desplat-Jégo, Nicole Fabien, Sophie Hue, Catherine Johanet, Daniela Lakomy, Thierry Vincent, Claire I Daïen
We report here the case of a 50-years-old man treated for mixed connective tissue disease (MCTD) positive for anti-U1 ribonucleoprotein (U1RNP) antibodies who secondarily developed a granulomatosis with polyangiitis (GPA) associated with anti-proteinase 3 anti-neutrophil cytoplasmic antibodies (PR3-ANCA). We then evaluated the frequency of the association between anti-U1RNP and anti-PR3-ANCA antibodies by a systematic retrospective study in ten European hospitals. Overall, out of 11,921 samples analyzed for both auto-antibodies, 18 cases of anti-U1RNP and anti-PR3-ANCA double positivity were found and only one patient presented with both MCTD and GPA symptoms...
September 12, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27618830/anti-hmgcr-antibodies-demonstrate-high-diagnostic-value-in-the-diagnosis-of-immune-mediated-necrotizing-myopathy-following-statin-exposure
#19
O Shovman, B Gilburd, C Chayat, A Dortort Lazar, H Amital, M Blank, C Bentow, M Mahler, Y Shoenfeld
Anti-HMGCR antibodies represent a characteristic serological feature of statin-exposed and statin-unexposed patients with immune-mediated necrotizing myopathy (IMNM). We assessed anti-HMGCR antibodies in patients with suspected IMNM following statin exposure and patients with other autoimmune rheumatic diseases. We evaluated the presence of anti-HMGCR autoantibodies in sera samples from 13 statin-exposed patients who were suspected of having IMNM, 38 patients with different inflammatory and autoimmune rheumatic diseases and 29 healthy subjects...
September 12, 2016: Immunologic Research
https://www.readbyqxmd.com/read/27617336/suppression-of-interleukin-17-contributes-to-the-immunomodulatory-effects-of-adipose-derived-stem-cells-in-a-murine-model-of-systemic-lupus-erythematosus
#20
Xiaoliang He, Yunlong Zhang, Ai Zhu, Kang Zeng, Xiuping Zhang, Li Gong, Yusheng Peng, Kuan Lai, Shaogang Qu
Due to roles in immunoregulation and low immunogenicity, mesenchymal stem cells have been suggested to be potent regulators of the immune response and may represent promising treatments for autoimmune disease. Adipose-derived stem cells (ADSCs), stromal cells derived from adipose tissue, were investigated with allogeneic ADSCs in B6.MRL/lpr mice, a murine model of systemic lupus erythematosus (SLE). We intravenously injected allogeneic ADSCs into SLE mice after disease onset and report that ADSCs reduced anti-ds DNA antibodies in serum and proteinuria in SLE mice...
September 12, 2016: Immunologic Research
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