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https://www.readbyqxmd.com/read/28440449/preoperative-tim%C3%A2-3-expression-on-peripheral-nk-cells-is-correlated-with-pathologic-tnm-staging-in-colorectal-cancer
#1
Yang Wang, Jintang Sun, Wenjuan Gao, Bingfeng Song, Qianqian Shao, Lei Zhao, Yun Zhang, Qingjie Wang, Yun Zhang, Xun Qu
Previous research has indicated that T cell immunoglobulin and mucin domain 3 (Tim-3) serves an important regulatory role in lymphocytes and in several cancers. However, the association between Tim‑3 expression on various lymphocyte subsets and human colorectal cancer (CRC) has not been elucidated. The present study aimed to characterize Tim‑3 expression on peripheral lymphocytes, including cluster of differentiation CD3+CD56‑ T cells, CD3‑CD56+ natural killer (NK) cells and CD3+CD56+ natural killer T (NKT) cells, in patients with CRC...
April 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28436935/tnf-superfamily-receptor-ox40-triggers-invariant-nkt-cell-pyroptosis-and-liver-injury
#2
Peixiang Lan, Yihui Fan, Yue Zhao, Xiaohua Lou, Howard P Monsour, Xiaolong Zhang, Yongwon Choi, Yaling Dou, Naoto Ishii, Rafik M Ghobrial, Xiang Xiao, Xian Chang Li
Tissue-resident immune cells play a key role in local and systemic immune responses. The liver, in particular, hosts a large number of invariant natural killer T (iNKT) cells, which are involved in diverse immune responses. However, the mechanisms that regulate survival and homeostasis of liver iNKT cells are poorly defined. Here we have found that liver iNKT cells constitutively express the costimulatory TNF superfamily receptor OX40 and that OX40 stimulation results in massive pyroptotic death of iNKT cells, characterized by the release of potent proinflammatory cytokines that induce liver injury...
April 24, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28435674/the-three-rs-recruitment-retention-and-residence-of-leukocytes-in-the-liver
#3
REVIEW
Hayley A McNamara, Ian A Cockburn
The composition of leukocytes in the liver is highly distinct from that of the blood and lymphoid organs. In particular, the liver is highly enriched in non-conventional T cells such as natural killer T (NKT) cells, γδ T cells and mucosal-associated invariant T cells. In addition, there are significant populations of tissue-resident NK cells (or innate lymphoid cells (ILC1)) and memory CD8(+) T cells. These cells are joined in conditions of inflammation by neutrophils, monocytes and macrophages. In recent years a multitude of studies have generated insights into how these cells arrest, move and remain resident in the liver...
December 2016: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28423034/elevated-frequencies-of-cd8-t-cells-expressing-pd-1-ctla-4-and-tim-3-within-tumour-from-perineural-squamous-cell-carcinoma-patients
#4
Richard Linedale, Campbell Schmidt, Brigid T King, Annabelle G Ganko, Fiona Simpson, Benedict J Panizza, Graham R Leggatt
Perineural spread of tumour cells along cranial nerves is a severe complication of primary cutaneous squamous cell carcinomas of the head and neck region. While surgical excision of the tumour is the treatment of choice, removal of all the tumour is often complicated by the neural location and recurrence is frequent. Non-invasive immune treatments such as checkpoint inhibitor blockade may be useful in this set of tumours although little is understood about the immune response to perineural spread of squamous cell carcinomas...
2017: PloS One
https://www.readbyqxmd.com/read/28421385/in-vitro-and-in-vivo-anti-tumor-effects-of-selected-platinum-iv-and-dinuclear-platinum-ii-complexes-against-lung-cancer-cells
#5
Milos Arsenijevic, Marija Milovanovic, Snezana Jovanovic, Natalija Arsenijevic, Bojana Simovic Markovic, Marina Gazdic, Vladislav Volarevic
In the present study, cytotoxic effects of cisplatin, the most usually used chemotherapeutic agent, were compared with new designed platinum(IV) ([PtCl4(en)] (en = ethylenediamine) and [PtCl4(dach)]) (dach = (±)-trans-1,2-diaminocyclohexane) and platinum(II) complexes ([{trans-Pt(NH3)2Cl}2(μ-pyrazine)](ClO4)2 (Pt1), [{trans-Pt(NH3)2Cl}2(μ-4,4'-bipyridyl)](ClO4)2DMF(Pt2),[{trans-Pt(NH3)2Cl}2(μ-1,2-bis(4pyridyl)ethane)](ClO4)2 (Pt3)), in vitro and in vivo against human and murine lung cancer cells, to determine anti-tumor potential of newly synthesized platinum-based drugs in the therapy of lung cancer...
April 18, 2017: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/28419443/loss-of-natural-killer-t-nkt-cells-promotes-pancreatic-cancer-in-lsl-kras-g12d-mice
#6
Naveena B Janakiram, Altaf Mohammed, Taylor Bryant, Rebekah Ritchie, Nicole Stratton, Lydgia Jackson, Stan Lightfoot, Doris M Benbrook, Adam Asch, Mark L Lang, Chinthalapally V Rao
Role of unique T cell population, Natural Killer T (NKT) cells which have similar functions like NK cells in PC is not yet evaluated. In order to address the regulatory roles of NKT cells on tumor progression through tumor-associated macrophages (TAM) and their production of microsomal prostaglandin E synthase-1 (mPGES-1) and 5-lipoxygenase (5-LOX) in (Kras)-driven pancreatic tumor (KPT) progression, we crossed CD1d(-/-) mice deficient in both iNKT and vNKT cells with the Kras(G12D) mice. Loss of NKT cells significantly increased pancreatic intraepithelial neoplasia lesions [PanINs] and also increased 5-LOX and mPGES-1 expressions in M2 type macrophages and cancer stem like cells in pancreatic tumors...
April 18, 2017: Immunology
https://www.readbyqxmd.com/read/28407659/peripheral-immunological-cells-in-pregnant-women-and-their-change-during-diabetes
#7
Ulrike Friebe-Hoffmann, Linda Antony, Jan-Steffen Kruessel, Brigitte Pawlowski, Thomas Karl Hoffmann
During the last decades the incidence of diabetes has dramatically increased as well as the number of pregnant diabetic women. There is still missing data regarding patterns and shifts of immune cell populations due to pregnancy with or without diabetes. The study aimed to investigate the impact of pregnancy, type 1 diabetes (T1D) and gestational diabetes mellitus (GDM) on different immune cells in female. The number and proportion of CD3-, CD4-, CD8- and γδ T-cells as well as B-, NK-, NKT- and dendritic cells (DC) incl...
April 13, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28404628/simultaneous-detection-of-decidual-th1-th2-and-nk1-nk2-immunophenotyping-in-unknown-recurrent-miscarriage-using-8-color-flow-cytometry-with-fsc-vt-extended-strategy
#8
Peng Dong, Xi Wen, Jia Liu, Cui-Yan Yan, Jing Yuan, Lan-Rong Luo, Qiao-Fei Hu, Jian Li
Th1/Th2 imbalance is considered as a mechanism of recurrent miscarriage. The NK1/NK2 paradigm is hypothesized to play an important role in pregnancy. However, few results showed simultaneous changes of these subsets in vivo in decidual tissues. This study aimed to detect the decidual mononuclear cells and the Th1/Th2 and NK1/NK2 paradigm simultaneously using multiparametric flow cytometry (MFC) in unexplained recurrent miscarriages (URM). Mononuclear cells were isolated from the decidual tissues of URM cases and early pregnant women...
April 12, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28401935/unique-invariant-natural-killer-t-cells-promote-intestinal-polyps-by-suppressing-th1-immunity-and-promoting-regulatory-t-cells
#9
Y Wang, S Sedimbi, L Löfbom, A K Singh, S A Porcelli, S L Cardell
CD1d-restricted invariant natural killer T (iNKT) cells are known as potent early regulatory cells of immune responses. Besides the established roles in the regulation of inflammation and autoimmune disease, studies have shown that iNKT cells have important roles in tumor surveillance and the control of tumor metastasis. Here we found that the absence of iNKT cells markedly decreased the total number of intestinal polyps in APC(Min/+) mice, a model for colorectal cancer. Polyp iNKT cells were enriched for interleukin-10 (IL-10)- and IL-17-producing cells, showed a distinct phenotype being CD4(+), NK1...
April 12, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28392574/m2-specific-reduction-of-cd1d-switches-nkt-cell-mediated-immune-responses-and-triggers-metaflammation-in-adipose-tissue
#10
Huimin Zhang, Rufeng Xue, Shasha Zhu, Sicheng Fu, Zuolong Chen, Rongbin Zhou, Zhigang Tian, Li Bai
Metaflammation is responsible for several metabolic syndromes, such as type 2 diabetes. However, the mechanisms by which metabolic disorders trigger metaflammation remain unclear. We identified a cell type-specific downregulation of CD1d expression in M2 macrophages during the progression of obesity prior to the onset of inflammation in visceral adipose tissues. A reduction in CD1d expression influenced the ability of M2 macrophages to present antigens and caused a change in antigen-presenting cells from M2 macrophages to M1 macrophages...
April 10, 2017: Cellular & Molecular Immunology
https://www.readbyqxmd.com/read/28392436/an-oral-administration-of-a-recombinant-anti-tnf-fusion-protein-is-biologically-active-in-the-gut-promoting-regulatory-t-cells-results-of-a-phase-i-clinical-trial-using-a-novel-oral-anti-tnf-alpha-based-therapy
#11
Einat Almon, Tawfik Khoury, Ariel Drori, Svetlana Gingis-Velitski, Sari Alon, Raul Chertkoff, Mordechai Mushkat, Yoseph Shaaltiel, Yaron Ilan
BACKGROUND: An orally administered BY-2 plant cell-expressed recombinant anti-TNF fusion protein (PRX-106) consists of the soluble form of the human TNF receptor (TNFR) fused to the Fc component of a human IgG1 domain. Aim This study aim at determining the safety and the immune modulatory effect of an oral administration of PRX-106 in humans. METHODS: Three different doses (2, 8 or 16mg/day) of PRX-106 were orally administered for five consecutive days in 14 healthy volunteered participants...
April 7, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28387617/oral-administration-of-%C3%AE-glucosylceramide-for-the-treatment-of-insulin-resistance-and-nonalcoholic-steatohepatitis-results-of-a-double-blind-placebo-controlled-trial
#12
Gadi Lalazar, Ehud Zigmond, Sarah Weksler-Zangen, Ami Ben Ya'acov, Miriam Sklair Levy, Nilla Hemed, Itamar Raz, Yaron Ilan
β-glucosylceramide (GC) is a naturally occurring glycosphingolipid that was shown to improve hepatic steatosis, steatohepatitis, and insulin resistance in animal models of nonalcoholic fatty liver disease. In this study, we evaluated the safety and efficacy of oral administration of GC in subjects with nonalcoholic steatohepatitis (NASH). Twenty-three patients with biopsy proven NASH were enrolled in a double-blind, placebo-controlled trial. Patients were orally administered daily with 7.5 mg of GC. Patients were followed for safety, liver enzymes, HbA1c, insulin sensitivity, lipid profile, hepatic fat content as measured by magnetic resonance imaging (MRI), and NASH score on liver biopsy...
April 7, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28384349/neutrophils-and-ly6chi-monocytes-collaborate-in-generating-an-optimal-cytokine-response-that-protects-against-pulmonary-legionella-pneumophila-infection
#13
Cierra N Casson, Jessica L Doerner, Alan M Copenhaver, Jasmine Ramirez, Alicia M Holmgren, Mark A Boyer, Ingharan J Siddarthan, Sara H Rouhanifard, Arjun Raj, Sunny Shin
Early responses mounted by both tissue-resident and recruited innate immune cells are essential for host defense against bacterial pathogens. In particular, both neutrophils and Ly6Chi monocytes are rapidly recruited to sites of infection. While neutrophils and monocytes produce bactericidal molecules, such as reactive nitrogen and oxygen species, both cell types are also capable of synthesizing overlapping sets of cytokines important for host defense. Whether neutrophils and monocytes perform redundant or non-redundant functions in the generation of anti-microbial cytokine responses remains elusive...
April 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28384114/immune-cell-subsets-evaluation-as-a-predictive-tool-for-hepatitis-b-infection-outcome-and-treatment-responsiveness
#14
Snezhina M Kandilarova, Atanaska I Georgieva, Anastasiya P Mihaylova, Marta P Baleva, Valentina K Atanasova, Diana V Petrova, Georgi T Popov, Elissaveta J Naumova
BACKGROUND: The patient's immune response is one of the major factors influencing HBV eradication or chronification, and it is thought to be responsible for the treatment success. AIM: Our study aimed to investigate whether cellular defense mechanisms are associated with the course of HBV infection (spontaneous recovery [SR] or chronification [CHB]) and with the therapeutic approach. PATIENTS AND METHODS: A total of 139 patients (118 with CHB, 21 SR) and 29 healthy individuals (HI) were immunophenotyped by flowcytometry...
March 1, 2017: Folia Medica
https://www.readbyqxmd.com/read/28378896/a-comprehensive-assessment-of-immunophenotyping-performed-in-cryopreserved-peripheral-whole-blood
#15
Chris P Verschoor, Vikas Kohli, Cynthia Balion
BACKGROUND: Monitoring the frequency and phenotype of white blood cell subsets using flow cytometry (immunophenotyping) has proven to be an incredibly powerful tool in the assessment of health. Although improved technologies have aided in the practical implementation of immunophenotyping in clinical and epidemiological studies, the transportation of blood from the site of collection to a central laboratory for analysis within a reasonable timeframe may not be feasible. Hence, the purpose of the following study was to investigate the validity of cryopreserved whole blood as a simple to prepare and cost-effective biospecimen for multi-colour immunophenotyping in a large epidemiological study - namely, The Canadian Longitudinal Study on Aging (CLSA)...
April 5, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28378547/deficiencies-of-circulating-mucosal-associated-invariant-t-cells-and-natural-killer-t-cells-in-patients-with-multiple-trauma
#16
Young Goun Jo, Hyun Jung Choi, Jung Chul Kim, Young Nan Cho, Jeong Hwa Kang, Hye Mi Jin, Seung Jung Kee, Yong Wook Park
Mucosal-associated invariant T (MAIT) cells and natural killer T (NKT) cells are known to play important roles in autoimmunity, infectious diseases and cancers. However, little is known about the roles of these invariant T cells in multiple trauma. The purposes of this study were to examine MAIT and NKT cell levels in patients with multiple trauma and to investigate potential relationships between these cell levels and clinical parameters. The study cohort was composed of 14 patients with multiple trauma and 22 non-injured healthy controls (HCs)...
May 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28373584/invariant-nkt-cell-activation-is-potentiated-by-homotypic-trans-ly108-interactions
#17
Yuriy Baglaenko, Mayra Cruz Tleugabulova, Eric Gracey, Nafiseh Talaei, Kieran Patricia Manion, Nan-Hua Chang, Dario Michael Ferri, Thierry Mallevaey, Joan E Wither
Invariant NKT (iNKT) cells are innate lymphocytes that respond to glycolipids presented by the MHC class Ib molecule CD1d and are rapidly activated to produce large quantities of cytokines and chemokines. iNKT cell development uniquely depends on interactions between double-positive thymocytes that provide key homotypic interactions between signaling lymphocyte activation molecule (SLAM) family members. However, the role of SLAM receptors in the differentiation of iNKT cell effector subsets and activation has not been explored...
April 3, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28371089/detection-of-invariant-natural-killer-t-cells-in-ejaculates-from-infertile-patients-with-chronic-inflammation-of-genital-tract
#18
Yong-Gang Duan, Shujian Chen, Gerhard Haidl, Jean-Pierre Allam
Chronic inflammation of genital tract is thought to play a major role in male fertility disorder. Natural killer (NK) T cells are a heterogeneous group of T cells that share properties of both T cells and NK cells which display immunoregulatory properties. However, little is known regarding the presence and function of NK T cells in ejaculates from patients with chronic inflammation of genital tract. Invariant NK T (iNK T) cells were detected by invariant (Vα24-JαQ) TCR chain in ejaculates from patients suffering from chronic inflammation of genital tract (CIGT) using flow cytometry and immunofluorescence of double staining (n=40)...
April 3, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28369682/characterization-and-functional-analysis-of-mouse-semi-invariant-natural-t-cells
#19
Amrendra Kumar, Jelena S Bezbradica, Aleksandar K Stanic, Sebastian Joyce
Semi-invariant natural killer T (iNKT) cells are CD1d-restricted innate-like lymphocytes that recognize lipid agonists. Activated iNKT cells have immunoregulatory properties. Human and mouse iNKT cell functions elicited by different glycolipid agonists are highly conserved, making the mouse an excellent animal model for understanding iNKT cell biology in vivo. This unit describes basic methods for the characterization and quantification (see Basic Protocol 1) and functional analysis of mouse iNKT cells in vivo or in vitro...
April 3, 2017: Current Protocols in Immunology
https://www.readbyqxmd.com/read/28369062/t-cell-subtypes-and-reciprocal-inflammatory-mediator-expression-differentiate-p-falciparum-memory-recall-responses-in-asymptomatic-and-symptomatic-malaria-patients-in-southeastern-haiti
#20
Jason S Lehmann, Joseph J Campo, Micheline Cicéron, Christian P Raccurt, Jacques Boncy, Valery E M Beau De Rochars, Anthony P Cannella
Asymptomatic Plasmodium falciparum infection is responsible for maintaining malarial disease within human populations in low transmission countries such as Haiti. Investigating differential host immune responses to the parasite as a potential underlying mechanism could help provide insight into this highly complex phenomenon and possibly identify asymptomatic individuals. We performed a cross-sectional analysis of individuals who were diagnosed with malaria in Sud-Est, Haiti by comparing the cellular and humoral responses of both symptomatic and asymptomatic subjects...
2017: PloS One
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