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Immunologic Research

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https://www.readbyqxmd.com/read/28653285/innate-defense-regulator-idr-1018-activates-human-mast-cells-through-g-protein-phospholipase-c-mapk-and-nf-%C3%A4-b-sensitive-pathways
#1
Kensuke Yanashima, Panjit Chieosilapatham, Eri Yoshimoto, Ko Okumura, Hideoki Ogawa, François Niyonsaba
Host defense (antimicrobial) peptides not only display antimicrobial activities against numerous pathogens but also exert a broader spectrum of immune-modulating functions. Innate defense regulators (IDRs) are a class of host defense peptides synthetically developed from natural or endogenous cationic host defense peptides. Of the IDRs developed to date, IDR-1018 is more efficient not only in killing bacteria but also in regulating the various functions of macrophages and neutrophils and accelerating the wound healing process...
June 26, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28646409/neuroprotective-effects-of-g-csf-administration-in-microglia-mediated-reactive-t-cell-activation-in-vitro
#2
Wei Peng
G-CSF is a growth factor that has known neuroprotective effects in a variety of experimental brain injury models. As both antigen-presenting microglia and reactive T cells are key components in the development and progression of EAE, the aim of this study is to investigate the neuroprotective effects of recombinant human G-CSF, as administered in microglia-mediated reactive T cell assay in vitro. Our results indicate that G-CSF treatment has no apparent effect for the resting un-activated microglia. G-CSF pre-protection of microglia increased protective cytokine IL-4 production and effectively inhibited the productions of NO and other inflammatory mediators (IFN-γ, TNF-α, IL-1β, IL-17, and chemokine MCP-1) after LPS stimulation...
June 23, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28612255/il-27-regulates-the-adherence-proliferation-and-migration-of-mscs-and-enhances-their-regulatory-effects-on-th1-and-th2-subset-generations
#3
Fenghuang Xu, Junzhu Yi, Zhuoya Wang, Yejia Hu, Chunlei Han, Qun Xue, Xueguang Zhang, Xiying Luan
Interleukin 27 (IL-27) regulates T cell function and is involved in inflammation. It has been reported that human placenta-derived mesenchymal stromal cells (hPMSCs) can inhibit T cell responses and attenuate inflammation reactions. However, it is unclear whether IL-27 can regulate hPMSC function. Here, we examined the effects of IL-27 upon adherence, migration, and proliferation as well as the immunomodulatory effects of hPMSCs. The results show that IL-27 receptor α chain (IL-27Rα) is expressed in hPMSCs...
June 14, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28573424/vitamin-d-inhibits-the-staphylococcal-enterotoxin-b-induced-expression-of-tumor-necrosis-factor-in-microglial-cells
#4
Jinggui He, Xiyun Guo, Zhi-Qiang Liu, Ping-Chang Yang, Shaobo Yang
Microglial cells play a crucial role in inflammatory responses in neural tissue. Vitamin D (VitD3) deficiency is associated with the pathogenesis of inflammation. Staphylococcal enterotoxin B (SEB) is a superantigen and can initiate inflammation. This study tests a hypothesis that VitD3 deficiency upregulates the expression of tumor necrosis factor (TNF) in microglial cells. Microglial cells were isolated from the mouse brain. The microglial cells were cultured in the presence or absence of VitD3 or/and SEB...
June 1, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28508945/clinical-efficacy-of-percutaneous-cryoablation-combined-with-allogenic-nk-cell-immunotherapy-for-advanced-non-small-cell-lung-cancer
#5
Mao Lin, Shu-Zhen Liang, Xiao-Hua Wang, Ying-Qing Liang, Ming-Jie Zhang, Li-Zhi Niu, Ji-Bing Chen, Hai-Bo Li, Ke-Cheng Xu
In this study, the safety and clinical efficacy of cryosurgery combined with allogenic NK cell immunotherapy for the treatment of advanced non-small cell lung cancer (NSCLC) were evaluated. From July 2016 to March 2017, we enrolled 60 patients who met the enrollment criteria and divided them into two groups: (1) the simple cryoablation group (n = 30) and (2) the cryoablation combined with allogenic NK cell group (n = 30). The changes in immune function, quality of life, and clinical response were evaluated...
May 16, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28488090/pathogenesis-of-systemic-sclerosis-current-concept-and-emerging-treatments
#6
REVIEW
Masutaka Furue, Chikage Mitoma, Hiroki Mitoma, Gaku Tsuji, Takahito Chiba, Takeshi Nakahara, Hiroshi Uchi, Takafumi Kadono
Systemic sclerosis (SSc) is an intractable multifaceted disease with high mortality. Although its pathogenesis is not fully understood, recent studies have advanced our knowledge on SSc. The cardinal pathological features of SSc are autoimmunity, vasculopathy, and fibrosis. The B cells in SSc are constitutively activated and lead to the production of a plethora of autoantibodies, such as anti-topoisomerase I and anti-centromere antibodies. In addition to these autoantibodies, which are valuable for diagnostic criteria or biomarkers, many other autoantibodies targeting endothelial cells, including endothelin type A receptor and angiotensin II type I receptor, are known to be functional and induce activation or apoptosis of endothelial cells...
May 9, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28478499/the-levels-of-dngr-1-and-its-ligand-bearing-cells-were-altered-after-human-and-simian-immunodeficiency-virus-infection
#7
Wen-Rong Yao, Dong Li, Lei Yu, Feng-Jie Wang, Hui Xing, Gui-Bo Yang
Dendritic cell NK lectin Group Receptor-1 (DNGR-1), also known as C-type lectin domain family 9, member A (CLEC9A), is a member of C-type lectin receptor superfamily expressed primarily on dendritic cells (DC) that excel in cross-presentation of exogenous antigens. To find out whether and how it is affected in human immunodeficiency virus infections or acquired immunodeficiency syndromes (HIV/AIDS), DNGR-1 expression and DNGR-1-binding cells in simian/human immunodeficiency virus (SHIV) and simian immunodeficiency virus (SIV)-infected rhesus macaques and antiretroviral therapy (ART)-treated AIDS patients were examined by real-time RT-PCR, flow cytometry, and confocal microscopy...
May 6, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28456882/the-nlrp3-and-casp1-gene-polymorphisms-are-associated-with-developing-of-acute-coronary-syndrome-a-case-control-study
#8
Hector Gonzalez-Pacheco, Gilberto Vargas-Alarcon, Javier Angeles-Martinez, Carlos Martinez-Sanchez, Oscar Perez-Mendez, Gabriel Herrera-Maya, Marco Antonio Martinez-Rios, Marco Antonio Peña-Duque, Carlos Posadas-Romero, Jose Manuel Fragoso
The protein products of NLRP3 and CASP1 genes are involved in the cleavage of pro-IL-1B and pro-IL-18 leading to the active cytokines, which play an important role in the development of the acute coronary syndrome (ACS). The aim of the present study was to evaluate whether NLRP3 and CASP1 gene polymorphisms are biomarkers of ACS susceptibility in Mexican population. Two polymorphisms of the CASP1 gene [G+7/in6A (rs501192) and A10370-G Exon-6 (rs580253)] and one of the NLRP3 gene [UTR'3 G37562-C (rs10754558)] were genotyped by 5' exonuclease TaqMan assays in a group of 617 patients with ACS and 609 control individuals...
April 30, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28456881/haplotype-analysis-of-il-10-gene-polymorphism-in-couples-with-spontaneous-abortions-and-aborted-fetuses
#9
M Vidyadhari, M Sujatha, P Krupa, Pratibha Nallari, A Venkateshwari
Spontaneous abortion is the loss of pregnancy during an early gestational period. Interleukin-10 is an anti-inflammatory cytokine which plays an important role in successful pregnancy outcome. The aim of the study is to elucidate an association of IL-10 gene promoter polymorphisms (-1082G/A, -819 C/T, -592C/A) in spontaneous abortions from Telangana state of South India. The present population-based retrospective case-control triad study includes a total of 80 case families with spontaneous abortions and 100 control families with medically terminated pregnancies...
April 29, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28432603/immunoprophylaxis-of-multi-antigen-peptide-map-vaccine-for-human-lymphatic-filariasis
#10
Christiana Immanuel, Aparnaa Ramanathan, Malathi Balasubramaniyan, Vishal Kishor Khatri, Nitin Purushottam Amdare, Donthamsetty Nageswara Rao, Maryada Venkata Rami Reddy, Kaliraj Perumal
Human lymphatic filariasis, the parasitic disease caused by the filarial nematodes Wuchereria bancrofti, Brugia malayi, and Brugia timori, is ranked as the second most complex clinical condition leading to permanent and long-term disability. The multiple antigen peptide (MAP) approach is an effective method to chemically synthesize and deliver multiple T and B cell epitopes as the constituents of a single immunogen. Here, we report on the design, chemical synthesis, and immunoprophylaxis of three epitopes that have been identified from promising vaccine candidates reported in our previous studies, constructed as MAP on an inert lysine core for human lymphatic filariasis in Jird model...
April 21, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28405920/effector-functions-of-memory-ctls-can-be-affected-by-signals-received-during-reactivation
#11
Yingjun Lv, Elliot Mattson, Anjuli Bhadurihauck, Karla Garcia, Lei Li, Zhengguo Xiao
Memory cytotoxic T lymphocytes (CTLs) are able to provide protections to the host against repeated insults from intracellular pathogens. However, it has not been completely understood how the effector functions of memory CTLs are induced upon antigen challenge, which is directly related to the efficacy of their protection. Third signal cytokines, such as IL-12 and type I interferon, have been suggested to be involved in the protective function of memory CTLs, but direct evidence is warranted. In this report, we found that memory CTLs need to be reactivated to exert effector functions...
April 12, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28391374/resolution-of-inflammation-pathways-in-preeclampsia-a-narrative-review
#12
REVIEW
Luiza Oliveira Perucci, Mário Dias Corrêa, Luci Maria Dusse, Karina Braga Gomes, Lirlândia Pires Sousa
Preeclampsia (PE) is one of the leading causes of maternal morbidity and mortality worldwide. This disease is believed to occur in two stages with placental dysfunction in early pregnancy leading to maternal clinical findings after 20 weeks of gestation, as consequence of systemic inflammation, oxidative stress, and endothelial dysfunction. Much evidence suggests that PE women display an overshooting inflammatory response throughout pregnancy due to an unbalanced regulation of innate and adaptive immune responses...
April 8, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28378118/mir-451-limits-cd4-t-cell-proliferative-responses-to-infection-in-mice
#13
Lesley M Chapman, Sara K Ture, David J Field, Craig N Morrell
MicroRNAs (miRNAs) are major regulators of cell responses, particularly in stressed cell states and host immune responses. Some miRNAs have a role in pathogen defense, including regulation of immune responses to Plasmodium parasite infection. Using a nonlethal mouse model of blood stage malaria infection, we have found that miR-451(-/-) mice infected with Plasmodium yoelii XNL cleared infection at a faster rate than did wild-type (WT) mice. MiR-451(-/-) mice had an increased leukocyte response to infection, with the protective phenotype primarily driven by CD4(+) T cells...
April 4, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28367602/myeloid-cells-expressing-high-level-of-cd45-are-associated-with-a-distinct-activated-phenotype-in-glioma
#14
Susan Brandenburg, Kati Turkowski, Annett Mueller, Yordan T Radev, Sabine Seidlitz, Peter Vajkoczy
Glioblastoma multiforme is characterized by high accumulation of microglia/macrophages. The function of these tumor-infiltrating myeloid cells is not sufficiently elucidated. Therefore, a better understanding of the precise immune cell composition and function in brain tumors is required. In rodent glioma models, two different myeloid cell populations exist, determined by the expression level of CD45, namely CD11b(+)CD45(low) and CD11b(+)CD45(high). Previous analyses of cytokine and marker expression profiles were almost exclusively performed on the entire myeloid cell fraction...
April 3, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28286920/blockade-of-notch-signaling-promotes-acetaminophen-induced-liver-injury
#15
Longfeng Jiang, Michael Ke, Shi Yue, Wen Xiao, Youde Yan, Xiaozhao Deng, Qi-Long Ying, Jun Li, Bibo Ke
Liver injury after experimental acetaminophen treatment is mediated both by direct hepatocyte injury through a P450-generated toxic metabolite and indirectly by activated liver Kupffer cells and neutrophils. This study was designed to investigate the role of Notch signaling in the regulation of innate immune responses in acetaminophen (APAP)-induced liver injury. Using a mouse model of APAP-induced liver injury, wild-type (WT) and toll-like receptor 4 knockout (TLR4 KO) mice were injected intraperitoneally with APAP or PBS...
June 2017: Immunologic Research
https://www.readbyqxmd.com/read/28258348/neutralization-of-nerve-growth-factor-ngf-inhibits-the-th2-response-and-protects-against-the-respiratory-syncytial-virus-rsv-infection
#16
Xiaorong Wu, Xiong Zhou, Yuxiang Hu, Chao Liu, Jun Wang
Increasing evidence suggests that respiratory syncytial virus (RSV) infection during the early life is an important risk factor for the development of asthma. RSV infection is associated with neurogenic inflammation in the airways along with the increased expression of nerve growth factor (NGF). However, the role of NGF in RSV infection is not clear. In this study, we infected the rat with RSV and treated these animals with anti-NGF neutralization antibody. We found that anti-NGF treatment significantly alleviated the lung inflammation as evidenced by decreased inflammatory infiltration and decreased airway resistance...
June 2017: Immunologic Research
https://www.readbyqxmd.com/read/28224361/modeling-strategy-to-identify-patients-with-primary-immunodeficiency-utilizing-risk-management-and-outcome-measurement
#17
Vicki Modell, Jessica Quinn, Grant Ginsberg, Ron Gladue, Jordan Orange, Fred Modell
This study seeks to generate analytic insights into risk management and probability of an identifiable primary immunodeficiency defect. The Jeffrey Modell Centers Network database, Jeffrey Modell Foundation's 10 Warning Signs, the 4 Stages of Testing Algorithm, physician-reported clinical outcomes, programs of physician education and public awareness, the SPIRIT® Analyzer, and newborn screening, taken together, generates P values of less than 0.05%. This indicates that the data results do not occur by chance, and that there is a better than 95% probability that the data are valid...
June 2017: Immunologic Research
https://www.readbyqxmd.com/read/28176163/retrospective-analysis-of-55-twin-neonates-with-haemolytic-disease-of-the-newborn
#18
Hu Zhao, Bijuan Li, Ning Li, Yamei Shen, Kailiang Liu, Xiangwu Shu, Cheng Mei, Lanlan Tang
Haemolytic disease is a condition characterized by anaemia and jaundice, and the course may be more complicated in twins. We investigated the demographic and laboratory characteristics of twins with haemolytic disease of the newborn (HDN) and compared these characteristics between groups categorized according to multiple birth status (twins vs. singletons) and conception method (assisted reproductive technology (ART) vs. spontaneous conception). Fifty-five twins with HDN and 253 singletons with HDN who were born during the same period (controls) were included in the study, and we performed comparisons between them...
June 2017: Immunologic Research
https://www.readbyqxmd.com/read/28161762/validation-of-an-enzyme-linked-immunosorbent-assay-for-the-quantification-of-citrullinated-histone-h3-as-a-marker-for-neutrophil-extracellular-traps-in-human-plasma
#19
Charlotte Thålin, Maud Daleskog, Sophie Paues Göransson, Daphne Schatzberg, Julie Lasselin, Ann-Charlotte Laska, Anders Kallner, Thomas Helleday, Håkan Wallén, Mélanie Demers
There is an emerging interest in the diverse functions of neutrophil extracellular traps (NETs) in a variety of disease settings. However, data on circulating NETs rely largely upon surrogate NET markers such as cell-free DNA, nucleosomes, and NET-associated enzymes. Citrullination of histone H3 by peptidyl arginine deiminase 4 (PAD4) is central for NET formation, and citrullinated histone H3 (H3Cit) is considered a NET-specific biomarker. We therefore aimed to optimize and validate a new enzyme-linked immunosorbent assay (ELISA) to quantify the levels of H3Cit in human plasma...
June 2017: Immunologic Research
https://www.readbyqxmd.com/read/28101811/the-distribution-and-function-of-human-memory-t-cell-subsets-in-lung-cancer
#20
Si Yuan Sheng, Yong Gu, Chuan Gang Lu, Jian Yong Zou, Hai Hong, RongFu Wang
The distribution and function of T lymphocytes in human lung cancer remain limited. In this study, we investigated the properties of human T cell subsets in the blood of non-small cell lung cancer (NSCLC) patients. We found a relatively normal level of CD4+ subsets in the blood of NSCLC patients, but CD8+ effector T cells increased and CD8+ effector memory cells declined compared to the healthy donors. To further analyze their properties, we stimulated the peripheral blood mononuclear cells (PBMCs) of NSCLC patients by mitogens to examine cytokine production...
June 2017: Immunologic Research
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