keyword
MENU ▼
Read by QxMD icon Read
search

Cd8

keyword
https://www.readbyqxmd.com/read/29353010/modulation-of-immune-responses-by-plasmodium-falciparum-infection-in-asymptomatic-children-living-in-the-endemic-region-of-mbita-western-kenya
#1
Caroline Kijogi, Daisuke Kimura, Lam Quoc Bao, Risa Nakamura, Evans Asena Chadeka, Ngetich Benard Cheruiyot, Felix Bahati, Kazuhide Yahata, Osamu Kaneko, Sammy M Njenga, Yoshio Ichinose, Shinjiro Hamano, Katsuyuki Yui
Individuals living in malaria endemic areas become clinically immune after multiple re-infections over time and remain infected without apparent symptoms. However, it is unclear why a long period is required to gain clinical immunity to malaria, and how such immunity is maintained. Although malaria infection is reported to induce inhibition of immune responses, studies on asymptomatic individuals living in endemic regions of malaria are relatively scarce. We conducted a cross-sectional study of immune responses in asymptomatic school children aged 4-16years living in an area where Plasmodium falciparum and Schistosoma mansoni infections are co-endemic in Kenya...
January 15, 2018: Parasitology International
https://www.readbyqxmd.com/read/29352737/bronchiolitis-obliterans-syndrome-is-associated-with-increased-p-glycoprotein-expression-and-loss-of-glucocorticoid-receptor-from-steroid-resistant-pro-inflammatory-cd8-t-cells
#2
Greg Hodge, Sandra Hodge, Phan Tien Nguyen, Aeneas Yeo, Parama Sarkar, Arash Badiei, C L Holmes-Liew, Paul N Reynolds, Mark Holmes
Immunosuppressive therapy fails to suppress the production of pro-inflammatory cytokines, particularly by CD8+T cells, in stable lung transplant recipients and those undergoing chronic rejection, suggesting that some patients may become relatively resistant to immunosuppressants such as glucocorticoids (GC). We have shown loss of GC receptor (GCR) from the CD8+ cells, and we hypothesized that the drug membrane efflux pump, p-glycoprotein-1 (Pgp), may also be involved in lymphocyte steroid resistance following lung transplant...
January 20, 2018: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/29352723/which-hiv-infected-adults-with-high-cd4-t-cell-counts-benefit-most-from-immediate-initiation-of-antiretroviral-therapy-a-post-hoc-subgroup-analysis-of-the-start-trial
#3
Jean-Michel Molina, Birgit Grund, Fred Gordin, Ian Williams, Mauro Schechter, Marcello Losso, Matthew Law, Ernest Ekong, Noluthando Mwelase, Athanasios Skoutelis, Martin J Wiselka, Linos Vandekerckhove, Thomas Benfield, David Munroe, Jens D Lundgren, James D Neaton
BACKGROUND: Immediate initiation of antiretroviral therapy (ART) in asymptomatic adults with CD4 counts higher than 500 cells per μL, as recommended, might not always be possible in resource-limited settings. We aimed to identify subgroups of individuals who would benefit most from immediate treatment. METHODS: The START trial was a randomised controlled trial in asymptomatic, HIV-positive adults previously untreated with ART. Participants with CD4 counts higher than 500 cells per μL were randomly assigned to receive immediate ART or to defer ART until CD4 counts were lower than 350 cells per μL...
January 15, 2018: Lancet HIV
https://www.readbyqxmd.com/read/29352630/surgical-damage-to-the-lymphatic-system-promotes-tumor-growth-via-impaired-adaptive-immune-response
#4
Yoshiyuki Nakamura, Yasuhiro Fujisawa, Naoko Okiyama, Rei Watanabe, Ryota Tanaka, Yosuke Ishitsuka, Hideaki Tahara, Manabu Fujimoto
BACKGROUND: Both lymph nodes (LNs) and lymphatic channels from primary sites to regional LNs are critical for initiation of adaptive immunity. However, as LNs are common metastatic sites in skin cancers, LN biopsies or dissections are frequently performed. In addition, reconstructive skin flaps after tumor resection may damage lymphatic flow from primary sites to regional LNs. OBJECTIVE: This study was designed to investigate the effect on tumor progression by such surgeries...
December 29, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/29352371/innate-and-adaptive-t-cells-in-influenza-disease
#5
REVIEW
Simone Nüssing, Sneha Sant, Marios Koutsakos, Kanta Subbarao, Thi H O Nguyen, Katherine Kedzierska
Influenza is a major global health problem, causing infections of the respiratory tract, often leading to acute pneumonia, life-threatening complications and even deaths. Over the last seven decades, vaccination strategies have been utilized to protect people from complications of influenza, especially groups at high risk of severe disease. While current vaccination regimens elicit strain-specific antibody responses, they fail to generate cross-protection against seasonal, pandemic and avian viruses. Moreover, vaccines designed to generate influenza-specific T-cell responses are yet to be optimized...
January 20, 2018: Frontiers of Medicine
https://www.readbyqxmd.com/read/29352109/role-of-b-and-t-lymphocyte-attenuator-in-renal-transplant-recipients-with-biopsy-proven-acute-rejection
#6
Zijie Wang, Haiwei Yang, Xuzhong Liu, Jingying Zhang, Zhijian Han, Jun Tao, Chunchun Zhao, Xiaobin Ju, Ruoyun Tan, Min Gu
BACKGROUND Acute rejection is a common predisposing cause of allograft dysfunction in kidney transplantation. Recently, the B and T lymphocyte attenuator (BTLA)/herpes virus entry mediator (HVEM)/lymphotoxin (LIGHT)/CD160 pathway was found to be potentially involved in the regulation of T cell activation. This could mean that this pathway is involved in graft rejection in kidney transplantation; the present study aimed to explore this possibility. MATERIAL AND METHODS The expression of BTLA, HVEM, LIGHT and CD160 on peripheral CD4+, CD8+ and CD19+ lymphocytes were analyzed by flow cytometry in recipients with biopsy-proven acute rejection (BPAR) or stable allograft function, as well as in healthy volunteers...
January 20, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29352005/differential-expression-of-cd8-t-cell-cytotoxic-effector-molecules-in-blood-and-gastrointestinal-mucosa-in-hiv-1-infection
#7
Brenna E Kiniry, Peter W Hunt, Frederick M Hecht, Ma Somsouk, Steven G Deeks, Barbara L Shacklett
We previously reported that CD8+ T cells in human gastrointestinal mucosa exhibit reduced perforin expression and weak or impaired cytotoxic capacity compared with their counterparts in blood. Nevertheless, these cells degranulate and express cytokines and chemokines in response to cognate Ag. In addition to weak expression of perforin, earlier studies suggested differential regulation of perforin and granzymes (Gzms), with GzmA and B expressed by significantly higher percentages of mucosal CD8+ T cells than perforin...
January 19, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29352001/keap1-editing-using-crispr-cas9-for-therapeutic-nrf2-activation-in-primary-human-t-lymphocytes
#8
Sanjeev Noel, Sul A Lee, Mohanraj Sadasivam, Abdel R A Hamad, Hamid Rabb
Oxidant stress modifies T lymphocyte activation and function. Previous work demonstrated that murine T cell-specific kelch like-ECH-associated protein 1 (Keap1) deletion enhances antioxidant capacity and protects from experimental acute kidney injury. In this study, we used CRISPR technology to develop clinically translatable human T cell-specific KEAP1 deletion. Delivery of KEAP1 exon 2 specific Cas9:guide RNA in Jurkat T cells led to significant (∼70%) editing and upregulation of NRF2-regulated antioxidant genes NADPH dehydrogenase quinone 1 (NQO1) (up to 11-fold), heme oxygenase 1 (HO1) (up to 11-fold), and GCLM (up to 2-fold)...
January 19, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29351920/exceptional-response-to-pembrolizumab-in-a-metastatic-chemotherapy-radiation-resistant-ovarian-cancer-patient-harboring-a-cd274-pd-l1-genetic-rearrangement
#9
Stefania Bellone, Natalia Buza, Jungmin Choi, Luca Zammataro, Laurie Gay, Julia A Elvin, David L Rimm, Yuting Liu, Elena Ratner, Peter E Schwartz, Alessandro D Santin
PURPOSE: Ovarian carcinoma no longer responsive to surgery and chemotherapy remains an incurable disease. Alternative therapeutic options remain desperately needed. EXPERIMENTAL DESIGN: We describe a heavily pretreated ovarian cancer patient with recurrent disease experiencing a remarkable clinical response to treatment with the anti-PD1 immune check-point inhibitor pembrolizumab. The clinical, pathological, and genomic characteristics of this exceptional ovarian cancer responder were carefully investigated using immunohistochemistry (IHC), quantitative multiplex fluorescence methods (ie, automated quantitative analysis, AQUA) and whole exome sequencing (WES) techniques...
January 19, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29351393/liver-tissue-metabolically-transformed-by-alcohol-induces-immune-recognition-of-liver-self-proteins-but-not-in-vivo-inflammation
#10
Michael J Duryee, Benjamin M Wiese, Jordan R Bowman, Jared D Vanlandingham, Lynell W Klassen, Geoffrey E Thiele, Carlos D Hunter, Daniel R Anderson, Ted R Mikuls, Geoffrey M Thiele
Precision cut liver slices (PCLSs) provide a novel model for studies in alcoholic liver disease (ALD). This is relevant, as in vivo ethanol exposure does not appear to generate significant liver damage in ethanol fed mice, except in the NIAAA binge model of ALD. Previous studies have shown that the two metabolites of ethanol consumption, malondialdhyde (MDA) and acetaldehyde (AA), combine to form (MAA), which has been correlated with the development and progression of ALD. In this study murine PCLSs were incubated with ethanol and examined for the production of MAA...
December 28, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29350789/tcr-modifications-that-enhance-chain-pairing-in-gene-modified-t-cells-can-augment-cross-reactivity-and-alleviate-cd8-dependence
#11
Timothy T Spear, Kendra C Foley, Elizabeth Garrett-Mayer, Michael I Nishimura
T cell receptor (TCR) gene-modified T cells are a promising immunotherapy but require refinement to improve clinical responses and limit off-target toxicities. A variety of TCR and gene-delivery vector modifications have been developed to enhance introduced TCR expression and limit introduced/endogenous TCR chain mispairing, improving target antigen recognition and minimizing mispairing-induced cross-reactivity. Using our well-characterized HCV1406 TCR, we previously compared the impact of various chain pairing enhancing modifications on TCR expression and cognate antigen recognition...
January 19, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29350748/protective-effect-of-chitosan-oligosaccharides-against-cyclophosphamide-induced-immunosuppression-and-irradiation-injury-in-mice
#12
Xingchen Zhai, Xin Yang, Pan Zou, Yong Shao, Shoujun Yuan, A M Abd El-Aty, Jing Wang
Chitosan oligosaccharides (COS), hydrolyzed products of chitosan, was found to display various biological activities. Herein, we assessed the immunostimulatory activity of COS both in in vitro and in vivo studies. In vitro cytotoxicity studies to murine macrophage RAW264.7 revealed that COS is safe even at the maximum tested concentration of 1000 μg/mL. It also stimulates the production of nitric oxide (NO) and tumor necrosis factor (TNF-α) and enhances the phagocytosis in COS-stimulated RAW264.7. We have shown that the COS could significantly (P < 0...
January 19, 2018: Journal of Food Science
https://www.readbyqxmd.com/read/29350470/specific-expression-of-pd-l1-in-rela-fusion-supratentorial-ependymoma-implications-for-pd-1-targeted-therapy
#13
Davis A Witt, Andrew M Donson, Vladimir Amani, Daniel C Moreira, Bridget Sanford, Lindsey M Hoffman, Michael H Handler, Jean M Mulcahy Levy, Kenneth L Jones, Anandani Nellan, Nicholas K Foreman, Andrea M Griesinger
BACKGROUND: A desperate need for novel therapies in pediatric ependymoma (EPN) exists, as chemotherapy remains ineffective and radiotherapy often fails. EPN have significant infiltration of immune cells, which correlates with outcome. Immune checkpoint inhibitors provide an avenue for new treatments. This study characterizes tumor-infiltrating immune cells in EPN and aims at predicting candidates for clinical trials using checkpoint inhibitors targeting PD-L1/PD-1 (programmed death ligand 1/programmed death 1)...
January 19, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29349889/t-cell-immunoglobulin-and-itim-domain-contributes-to-cd8-t-cell-immunosenescence
#14
Yangzi Song, Beibei Wang, Rui Song, Yu Hao, Di Wang, Yuxin Li, Yu Jiang, Ling Xu, Yaluan Ma, Hong Zheng, Yaxian Kong, Hui Zeng
Aging is associated with immune dysfunction, especially T-cell defects, which result in increased susceptibility to various diseases. Previous studies showed that T cells from aged mice express multiple inhibitory receptors, providing evidence of the relationship between T-cell exhaustion and T-cell senescence. In this study, we showed that T-cell immunoglobulin and immunoreceptor tyrosine-based inhibitory motif (ITIM) domain (TIGIT), a novel co-inhibitory receptor, was upregulated in CD8+ T cells of elderly adults...
January 19, 2018: Aging Cell
https://www.readbyqxmd.com/read/29348866/protein-methyltransferases-and-demethylases-dictate-cd8-t-cell-exclusion-in-squamous-cell-carcinoma-of-the-head-and-neck
#15
Theodore Vougiouklakis, Riyue Bao, Yusuke Nakamura, Vassiliki Saloura
A subset of patients with recurrent/metastatic squamous cell carcinoma of the head and neck (SCCHN) benefit from pembrolizumab and nivolumab, but the majority of patients do not probably due to lack of activated cytotoxic CD8+ T-cells in their tumor tissues. Herein, we aim to investigate whether specific protein methyltransferases (PMTs) and demethylases (PDMTs) could play any roles in the CD8+ T-cell exclusion process in HPV-negative SCCHN. RNA sequencing data from the TCGA database were interrogated for HPV-negative SCCHN patients using a 10-gene chemokine signature that classifies SCCHN tissues into CD8+ T-cell inflamed and non-CD8+ T-cell inflamed phenotypes...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29348685/overexpression-of-adhesion-molecules-and-barrier-molecules-is-associated-with-differential-infiltration-of-immune-cells-in-non-small-cell-lung-cancer
#16
Young Kwang Chae, Wooyoung M Choi, William H Bae, Jonathan Anker, Andrew A Davis, Sarita Agte, Wade T Iams, Marcelo Cruz, Maria Matsangou, Francis J Giles
Immunotherapy is emerging as a promising option for lung cancer treatment. Various endothelial adhesion molecules, such as integrin and selectin, as well as various cellular barrier molecules such as desmosome and tight junctions, regulate T-cell infiltration in the tumor microenvironment. However, little is known regarding how these molecules affect immune cells in patients with lung cancer. We demonstrated for the first time that overexpression of endothelial adhesion molecules and cellular barrier molecule genes was linked to differential infiltration of particular immune cells in non-small cell lung cancer...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348598/increased-diversity-with-reduced-diversity-evenness-of-tumor-infiltrating-t-cells-for-the-successful-cancer-immunotherapy
#17
Akihiro Hosoi, Kazuyoshi Takeda, Koji Nagaoka, Tamaki Iino, Hirokazu Matsushita, Satoshi Ueha, Shin Aoki, Kouji Matsushima, Masato Kubo, Teppei Morikawa, Kazutaka Kitaura, Ryuji Suzuki, Kazuhiro Kakimi
To facilitate the optimization of cancer immunotherapy lacking immune-related adverse events, we performed TCR repertoire analysis of tumor-infiltrating CD8+ T-cells in B16 melanoma-bearing mice receiving anti-PD-1, anti-CTLA-4, anti-4-1BB, anti-CD4 or a combination of anti-PD-1 and 4-1BB antibodies. Although CD8+ T-cells in the tumor were activated and expanded to a greater or lesser extent by these therapies, tumor growth suppression was achieved only by anti-PD-1, anti-PD-1/4-1BB combined, or by anti-CD4 treatment, but not by anti-CTLA-4 or anti-4-1BB monotherapy...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348563/disruption-of-cxcr3-function-impedes-the-development-of-sj%C3%A3-gren-s-syndrome-like-xerostomia-in-non-obese-diabetic-mice
#18
Jing Zhou, Qing Yu
The chemokine receptor CXCR3 plays an important role in T cell recruitment in various immune responses and autoimmune diseases. Expression of CXCR3 ligands, including CXCL9, CXCL10, and CXCL11, is elevated in the salivary glands of patients with Sjögren's syndrome (SS). To elucidate whether interaction between CXCR3 and its ligands is required for the development of SS, we administrated an anti-CXCR3 blocking antibody (CXCR3-173) to the non-obese diabetic (NOD) mice, a well-defined model of SS, during the stage prior to disease onset...
January 18, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29346301/braf-and-mek-inhibitors-influence-the-function-of-reprogrammed-t-cells-consequences-for-adoptive-t-cell-therapy
#19
Jan Dörrie, Lek Babalija, Stefanie Hoyer, Kerstin F Gerer, Gerold Schuler, Lucie Heinzerling, Niels Schaft
BRAF and MEK inhibitors (BRAFi/MEKi), the standard treatment for patients with BRAFV600 mutated melanoma, are currently explored in combination with various immunotherapies, notably checkpoint inhibitors and adoptive transfer of receptor-transfected T cells. Since two BRAFi/MEKi combinations with similar efficacy are approved, potential differences in their effects on immune cells would enable a rational choice for triple therapies. Therefore, we characterized the influence of the clinically approved BRAFi/MEKi combinations dabrafenib (Dabra) and trametinib (Tram) vs...
January 18, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29346185/higher-art-adherence-is-associated-with-lower-systemic-inflammation-in-treatment-na%C3%A3-ve-ugandans-who-achieve-virologic-suppression
#20
Jose R Castillo-Mancilla, Mary Morrow, Yap Boum, Helen Byakwaga, Jessica E Haberer, Jeffrey N Martin, David Bangsberg, Samantha Mawhinney, Nicholas Musinguzi, Yong Huang, Russell P Tracy, Tricia H Burdo, Kenneth Williams, Conrad Muzoora, Peter W Hunt, Mark J Siedner
BACKGROUND: Residual systemic inflammation persists despite suppressive antiretroviral therapy (ART) and is associated with non-AIDS clinical outcomes. We aimed to evaluate the association between ART adherence and inflammation in Ugandans living with HIV who were predominantly receiving nevirapine-based ART with a thymidine analog backbone and were virologically suppressed by conventional assays. METHODS: Plasma concentrations of interleukin-6 (IL-6), D-dimer, soluble (s)CD14, sCD163, the kynurenine/tryptophan (K/T) ratio, in addition to CD8 T-cell activation, were measured at baseline and 6 months after ART initiation in treatment-naïve adults who achieved an undetectable plasma HIV RNA (<400 copies/mL) at their 6-month visit...
January 16, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
keyword
keyword
8563
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"