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https://www.readbyqxmd.com/read/28529732/microarray-analysis-of-differentially-expressed-genes-and-their-functions-in-omental-visceral-adipose-tissues-of-pregnant-women-with-vs-without-gestational-diabetes-mellitus
#1
Yuan Qian, Hao Sun, Hongli Xiao, Meirun Ma, Xue Xiao, Qinzai Qu
Increasing evidence has shown that insulin resistance in omental visceral adipose tissue (OVAT) is a characteristic of gestational diabetes mellitus (GDM). The present study aimed to identify differentially expressed genes (DEGs) and their associated functions and pathways involved in the pathogenesis of GDM by comparing the expression profiles of OVATs obtained from pregnant Chinese women with and without GDM during caesarian section. A total of 935 DEGs were identified, including 450 downregulated and 485 upregulated genes...
May 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28529687/histone-demethylases-utx-and-jmjd3-are-required-for-nkt-cell-development-in-mice
#2
Daniel Northrup, Ryoji Yagi, Kairong Cui, William R Proctor, Chaochen Wang, Katarzyna Placek, Lance R Pohl, Rongfu Wang, Kai Ge, Jinfang Zhu, Keji Zhao
BACKGROUND: Natural killer (NK)T cells and conventional T cells share phenotypic characteristic however they differ in transcription factor requirements and functional properties. The role of histone modifying enzymes in conventional T cell development has been extensively studied, little is known about the function of enzymes regulating histone methylation in NKT cells. RESULTS: We show that conditional deletion of histone demethylases UTX and JMJD3 by CD4-Cre leads to near complete loss of liver NKT cells, while conventional T cells are less affected...
2017: Cell & Bioscience
https://www.readbyqxmd.com/read/28529616/lymphocyte-monocyte-ratio-is-a-novel-predictor-for-early-stage-extranodal-natural-killer-t-cell-lymphoma-nasal-type
#3
Qiao-Xuan Wang, Shao-Hua Li, Bao-Yan Ji, Han-Yu Wang, Yi-Yang Li, Ling-Ling Feng, Kai Chen, Yun-Fei Xia, Yu-Jing Zhang
Objective: Great heterogeneity exists in clinical behavior and survival outcome in patients with stage IE/IIE extranodal natural killer/T-cell lymphoma, nasal type (ENKTL). In this study, we proposed lymphocyte/monocyte ratio (LMR) as a new prognostic factor for these early stage ENKTL. Methods: We retrospectively examined the LMR as a prognostic variable in a cohort of 379 patients with newly diagnosed stage IE/IIE ENKTL. The relationship between the LMR and clinicopathologic variables were analyzed in Kaplan-Meier log-rank survival analysis, and the Cox proportional hazards model was used to determine the survival significance of the LMR for both progression-free survival (PFS) and overall survival (OS)...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28529568/a-different-representation-of-natural-t-cells-and-natural-killer-cells-between-tumor-infiltrating-and-periphery-lymphocytes-in-human-hepatocellular-carcinoma
#4
Xiao-Feng Li, Dong Dai, Xiu-Yu Song, Jian-Jing Liu, Lei Zhu, Xiang Zhu, Wenchao Ma, Wengui Xu
Natural T cells [cluster of differentiation (CD) 3(+)CD56(+)] and natural killer (NK) cells (CD3(-)CD56(+)) are particularly abundant in the human liver and serve an important role in immune responses in the liver. The aim of the present study was to extensively determine the phenotypic and functional characteristics of natural T and NK cells in human hepatocellular carcinoma (HCC). Tumorous and non-tumorous tissue infiltrating lymphocytes (TILs and NILs, respectively) and peripheral blood mononuclear cells (PBMCs) from patients with hepatocellular carcinoma (HCC) were obtained to determine the frequency and phenotype of natural T/NK cells by a multicolor fluorescence activated cell sorting analysis...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529563/role-of-nkg2d-in-cytokine-induced-killer-cells-against-lung-cancer
#5
Xiaowei Yin, Xuzhang Lu, Zhang Xiuwen, Zhou Min, Rong Xiao, Zhengdao Mao, Qian Zhang
It has been previously demonstrated that cytokine-induced killer (CIK) cells possess potent cytotoxicity against various cancer cells, including lung cancer cells. However, the mechanism by which CIK cells recognize lung cancer cells has not been understood. The interaction between killer cell lectin like receptor K1 (NKG2D) receptor and NKG2D ligands was demonstrated to serve an important role in target cell killing by natural killer cells. The present study investigated whether NKG2D receptor and NKG2D ligand interactions are involved in the CIK-directed killing of lung cancer cells...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529313/impact-of-killer-immunoglobulin-like-receptor-and-human-leukocyte-antigen-genotypes-on-the-efficacy-of-immunotherapy-in-acute-myeloid-leukemia
#6
E Bernson, A Hallner, F E Sander, O Wilsson, O Werlenius, A Rydström, R Kiffin, M Brune, R Foà, J Aurelius, A Martner, K Hellstrand, F B Thorén
Interactions between killer-immunoglobulin-like receptors (KIRs) and their HLA class I ligands are instrumental in natural killer (NK) cell regulation and protect normal tissue from NK cell attack. Human KIR haplotypes comprise genes encoding mainly inhibitory receptors (KIR A) or activating and inhibitory receptors (KIR B). A substantial fraction of humans lack ligands for inhibitory KIRs (iKIRs), i.e. a 'missing ligand' genotype. KIR B/x and missing ligand genotypes may thus give rise to potentially autoreactive, unlicensed NK cells...
May 22, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28528709/association-between-the-killer-cell-immunoglobulin-like-receptor-a-haplotype-and-childhood-acute-lymphoblastic-leukemia
#7
Awad E Osman, Abdullah Aljuryan, Hanan Al-Harthi, Mai Almeshari
Killer immunoglobulin-like receptors (KIRs) have the ability to regulate Natural killer (NK) cell function through inhibition/activation mechanisms. Healthy human cells express HLA class I ligands on their surface, which are recognized by NK cells to avoid spontaneous cell destruction. The associations of KIRs and/or HLA class 1 ligands in leukemic patients have been studied in some populations, with some of these studies demonstrating an association of specific types with leukemia. KIRs and their corresponding HLA class 1 ligands were investigated in Saudi patients with ALL and AML and compared to healthy controls...
May 18, 2017: Human Immunology
https://www.readbyqxmd.com/read/28528419/a-risk-based-characterization-of-sediment-contamination-by-legacy-and-emergent-contaminants-of-concern-in-coastal-british-columbia-canada
#8
Carmen Morales-Caselles, Jean-Pierre W Desforges, Neil Dangerfield, Peter S Ross
Sediments have long been used to help describe pollution sources, contaminated sites, trends over time, and habitat quality for marine life. We collected surficial sediments from 12 sites at an average seawater depth of 25 m in three near-urban areas of the Salish Sea (British Columbia, Canada) to investigate habitat quality for marine life, including heavily contaminated killer whales. Samples were analyzed using high-resolution instrumentation for a wide variety of congeners of polychlorinated biphenyls (PCBs), polybrominated diphenylethers (PBDEs), hexabromocyclododecane (HBCDD), polybrominated biphenyls, polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans, organochlorine pesticides, and polychlorinated naphthalenes (PCNs)...
May 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28528178/expanding-biological-activities-of-ts19-frag-ii-toxin-insights-into-il-17-production
#9
Felipe Augusto Cerni, Manuela Berto Pucca, Karina Furlani Zoccal, Fabiani Gai Frantz, Lucia Helena Faccioli, Eliane Candiani Arantes
Tityus serrulatus (Ts) venom is composed of a mixture of toxins presenting diverse biological functions. However, although this venom has been studied over the past three decades, omics analysis revealed that most of its toxins are not identified or their biological activities are unknown. Ts19 Frag-II is included is this group, which function is still uncertain. This study aimed to expand the biological activities of Ts19 Frag-II through in vivo investigation. Our results demonstrates that mice challenged with Ts19 Frag-II presented biochemical alterations, increasing serum levels of urea, ALT and β-globulin, besides decreasing γ-globulins...
May 17, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28526557/the-frog-skin-host-defense-peptide-frenatin-2-1s-enhances-recruitment-activation-and-tumoricidal-capacity-of-nk-cells
#10
Jelena M Pantic, Ivan P Jovanovic, Gordana D Radosavljevic, Nevena M Gajovic, Nebojsa N Arsenijevic, J Michael Conlon, Miodrag L Lukic
Frog skin is a source of peptides with various biological properties. Frenatin 2.1S, derived from norepinephrine-stimulated skin secretions of the Orinoco lime tree frog Sphaenorhynchus lacteus, exhibits immunostimulatory effects as demonstrated by the promotion of proinflammatory phenotypes of mononuclear cells in mouse peritoneal cavity and spleen. The aim of this study was to identify the populations of host cells sensitive to the action of frenatin 2.1S in vivo and to study its effects on their functional antitumor capacity...
May 16, 2017: Peptides
https://www.readbyqxmd.com/read/28525893/rat-embryonic-fibroblasts-immortalized-by-mrps18-2-protein-are-target-for-nk-cells
#11
Muhammad Mushtaq, Pradeepa N Pangigadde, Suhas Darekar, Erik Dissen, Elena Kashuba
Overexpression of the human mitochondrial ribosomal protein MRPS18-2 (S18-2) led to immortalization of primary rat embryonic fibroblasts (REFs). The derived cells (18IM) expressed embryonic stem cell markers. Noteworthy, genes encoding the COX family proteins were up-regulated significantly. It is known that the COX family proteins are involved in the regulation of immune response.In the present work we demonstrate that 18IM cells behave like stem cells when subjected to directed differentiation in vitro. However, unlike stem cells, 18IM cells do not develop tumors in vivo, in SCID mice...
May 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28525883/-don-t-let-kids-play-football-a-killer-idea
#12
EDITORIAL
James MacDonald, Gregory D Myer
No abstract text is available yet for this article.
October 8, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28523761/unraveling-the-expression-of-microrna-27a-nkg2d-in-peripheral-blood-mononuclear-cells-and-natural-killer-cells-of-pediatric-systemic-lupus-erythematosus-patients
#13
Shady K Sourour, Heba R Aboelenein, Noha M Elemam, Amira K Abdelhamid, Samia Salah, Ahmed I Abdelaziz
BACKGROUND AND AIM: The activity of natural killer (NK) cells is known to be decreased in systemic lupus erythematosus (SLE) patients. Nevertheless, the exact contribution of NK cells in the pathogenesis of SLE is still inconclusive. MicroRNAs (miRNAs), are small noncoding RNA molecules that play a fundamental role in regulating NK cell function. The objective of this study was to investigate the expression of miRNAs that might potentially target an essential activating receptor, NKG2D in peripheral blood mononuclear cells (PBMCs) and NK cells of SLE patients...
May 19, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28523429/kir-lilrb-and-their-ligands-genes-as-potential-biomarkers-in-recurrent-implantation-failure
#14
REVIEW
Izabela Nowak, Karolina Wilczyńska, Jacek R Wilczyński, Andrzej Malinowski, Paweł Radwan, Michał Radwan, Piotr Kuśnierczyk
Reproductive failure in humans is a very important social and economic problem, because nowadays women decide to conceive later in life and delay motherhood. Unfortunately, with increasing age they have less chance for natural fertilization and maintenance of pregnancy. Many of them need assisted reproductive technology. Approximately 10% of women after in vitro fertilization-embryo transfers experience recurrent implantation failure (RIF). Multiple factors may contribute to RIF, including oocyte and sperm quality, parental chromosomal anomalies, genetic or metabolic abnormalities of the embryo, poor uterine receptivity, immunological disturbances in the implantation site, and some gynecologic pathologies such as endometriosis, uterine fibroids, hydrosalpinx and endometrial polyps...
May 18, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/28522576/natural-killer-cell-counts-are-associated-with-molecular-relapse-free-survival-after-imatinib-discontinuation-in-chronic-myeloid-leukemia-the-immunostim-study
#15
Delphine Rea, Guylaine Henry, Zena Khaznadar, Gabriel Etienne, François Guilhot, Franck Nicolini, Joelle Guilhot, Philippe Rousselot, Françoise Huguet, Laurence Legros, Martine Gardembas, Viviane Dubruille, Agnès Guerci-Bresler, Aude Charbonnier, Frédéric Maloisel, Jean-Christophe Ianotto, Bruno Villemagne, François-Xavier Mahon, Hélène Moins-Teisserenc, Nicolas Dulphy, Antoine Toubert
Despite leukemic stem cell persistence, patients with chronic myeloid leukemia who achieve and maintain deep molecular responses may successfully stop the tyrosine kinase inhibitor imatinib. However, questions remain unanswered regarding the biological basis of molecular relapse after imatinib cessation. In IMMUNOSTIM, we monitored 51 patients from the French Stop IMatinib trial for peripheral blood T-cells and natural killer-cells. Molecular relapse-free survival at 24 months was 45.1% (95% CI: 31.44%-58.75%)...
May 18, 2017: Haematologica
https://www.readbyqxmd.com/read/28520963/humoral-and-innate-antiviral-immunity-as-tools-to-clear-persistent-hiv-infection
#16
Guido Ferrari, Justin Pollara, Georgia D Tomaras, Barton F Haynes
Human immunodeficiency virus (HIV) type 1 uses the CD4 molecule as its principal receptor to infect T cells. HIV-1 integrates its viral genome into the host cell, leading to persistent infection wherein HIV-1 can remain transcriptionally silent in latently infected CD4+ T cells. On reactivation of replication-competent provirus, HIV-1 envelope glycoproteins (Env) are expressed and accumulate on the cell surface, allowing infected cells to be detected and targeted by endogenous immune responses or immune interventions...
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28520652/a-systematic-review-and-meta-analysis-of-laparoscopic-and-open-distal-pancreatectomy-of-nonductal-adenocarcinomatous-pancreatic-tumor-ndacpt-in-the-pancreatic-body-and-tail
#17
Xiaojiang Yi, Sile Chen, Wei Wang, Liaonan Zou, Dechang Diao, Yansheng Zheng, Yaobin He, Hongming Li, Lijie Luo, Wenjun Xiong, Jin Wan
BACKGROUND: Currently, laparoscopic distal pancreatectomy is regarded as a safe and effective surgical approach for lesions in the body and tail of the pancreas. This review examined the evidence from published data of comparative studies of laparoscopic versus open distal pancreatectomy of nonductal adenocarcinomatous pancreatic tumor in pancreatic body and tail. METHODS: A systematic review of the studies comparing laparoscopic and open distal pancreatectomy was conducted...
May 17, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28520526/kir3dl1-hl-a-b-subtypes-govern-acute-myelogenous-leukemia-relapse-after-hematopoietic-cell-transplantation
#18
Jeanette E Boudreau, Fabio Giglio, Ted A Gooley, Philip A Stevenson, Jean-Benoît Le Luduec, Brian C Shaffer, Raja Rajalingam, Lihua Hou, Carolyn Katovich Hurley, Harriet Noreen, Elaine F Reed, Neng Yu, Cynthia Vierra-Green, Michael Haagenson, Mari Malkki, Effie W Petersdorf, Stephen Spellman, Katharine C Hsu
Purpose Disease relapse remains a major challenge to successful outcomes in patients who undergo allogeneic hematopoietic cell transplantation (HCT). Donor natural killer (NK) cell alloreactivity in HCT can control leukemic relapse, but capturing alloreactivity in HLA-matched HCT has been elusive. HLA expression on leukemia cells-upregulated in the post-HCT environment-signals for NK cell inhibition via inhibitory killer immunoglobulin-like (KIR) receptors and interrupts their antitumor activity. We hypothesized that varied strengths of inhibition among subtypes of the ubiquitous KIR3DL1 and its cognate ligand, HLA-B, would titrate NK reactivity against acute myelogenous leukemia (AML)...
May 18, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28520183/infected-malnourished-children-displayed-changes-in-early-activation-and-lymphocyte-subpopulations
#19
Oralia Nájera-Medina, Fernando Valencia-Chavarría, Consuelo Cortés-Bejar, Monika Palacios-Martínez, C Paulina Rodríguez-López, María Cristina González-Torres
AIM: Malnutrition and infections cause immunological changes in lymphocyte subpopulations and their functionality. We evaluated the activation capacity of lymphocytes and memory cells in 10 well nourished, seven well nourished infected and eight malnourished infected children before and after treatment. METHODS: All the children were patients in Mexico City and were less than three years of age. The expression of various cluster of differentiation (CD) cells were assessed by flow cytometry: CD45RA (naïve) and CD45RO (memory) antigens on CD4 lymphocytes and CD69 in all lymphocytes...
May 18, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28515356/licensing-delineates-helper-and-effector-nk-cell-subsets-during-viral-infection
#20
Anthony E Zamora, Ethan G Aguilar, Can M Sungur, Lam T Khuat, Cordelia Dunai, G Raymond Lochhead, Juan Du, Claire Pomeroy, Bruce R Blazar, Dan L Longo, Jeffrey M Venstrom, Nicole Baumgarth, William J Murphy
Natural killer (NK) cells can be divided into phenotypic subsets based on expression of receptors that bind self-MHC-I molecules, a concept termed licensing or education. Here we show NK cell subsets with different migratory, effector, and immunoregulatory functions in dendritic cell and antigen (ag)-specific CD8+ T cell responses during influenza and murine cytomegalovirus infections. Shortly after infection, unlicensed NK cells localized in draining lymph nodes and produced GM-CSF, which correlated with the expansion and activation of dendritic cells, and resulted in greater and sustained ag-specific T cell responses...
May 18, 2017: JCI Insight
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