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https://www.readbyqxmd.com/read/28791853/neutrophil-cd64-as-a-diagnostic-marker-for-neonatal-sepsis-meta-analysis
#1
Ji Dai, Wenjie Jiang, Zhigang Min, Jian Yang, Yongfei Tan, Tieliang Ma, Zhijun Ge
BACKGROUND: Neutrophil CD64 (nCD64) is a promising marker for diagnosing bacterial infections. Several studies have investigated the performance of nCD64 for diagnosing neonatal sepsis and the results are variable. Interest in nCD64 for detecting serious bacterial infections is increasing rapidly. OBJECTIVES: The aim of the present study was to carry out a meta-analysis to systematically evaluate the diagnostic accuracy of nCD64 in neonatal sepsis. As far as the authors know, no previous studies have undertaken this...
March 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28774361/-value-of-combined-determination-of-neutrophil-cd64-and-procalcitonin-in-early-diagnosis-of-neonatal-bacterial-infection
#2
Dao-Jian Qin, Zong-Sheng Tang, Shu-Li Chen, Xue-Mei Xu, Shuang-Gen Mao, Shi-Fa Zhang
OBJECTIVE: To investigate the value of combined determination of neutrophil CD64 and procalcitonin (PCT) in the early diagnosis of neonatal bacterial infection. METHODS: According to discharge diagnosis, 37 neonates with bacterial infection were divided into sepsis (n=15) and ordinary infection (non-sepsis) groups (n=22). Twenty-one neonates without infection who were hospitalized during the same period of time were enrolled as the control group. Venous blood samples were collected immediately after admission...
August 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28740457/perioperative-increase-in-neutrophil-cd64-expression-is-an-indicator-for-intra-abdominal-infection-after-colorectal-cancer-surgery
#3
Milena Kerin Povsic, Bojana Beovic, Alojz Ihan
BACKGROUND: Colorectal surgery is associated with a high incidence of postoperative infections. Early clinical signs are difficult to distinguish from the systemic inflammatory response related to surgical trauma. Timely diagnosis may significantly improve the outcome. The objective of this study was to compare a new biomarker index CD64 for neutrophils (iCD64n) with standard biomarkers, white blood cell (WBC) count, neutrophil/lymphocyte ratio (NLR), C-reactive protein (CRP) and procalcitonin (PCT) for the early detection of postoperative infection...
June 2017: Radiology and Oncology
https://www.readbyqxmd.com/read/28732735/acidic-polysaccharide-complexes-from-purslane-silver-linden-and-lavender-stimulate-peyer-s-patch-immune-cells-through-innate-and-adaptive-mechanisms
#4
Yordan N Georgiev, Manol H Ognyanov, Hiroaki Kiyohara, Tsvetelina G Batsalova, Balik M Dzhambazov, Milan Ciz, Petko N Denev, Haruki Yamada, Berit S Paulsen, Ondrej Vasicek, Antonin Lojek, Hilde Barsett, Daniela Antonova, Maria G Kratchanova
Three polysaccharide complexes (PSCs) were isolated from the aerial parts of common purslane (Portulaca oleracea L.), and the flowers of common lavender (Lavandula angustifolia Mill.) and silver linden (Tilia tomentosa Moench) by boiling water extraction and ethanol precipitation. The chemical composition and immunomodulating effects of isolated PSCs were characterized. The chemical characterization revealed that the three samples contain mainly pectic polysaccharides. They exhibited ex vivo intestinal immunomodulating activity through the murine Peyer's patch-mediated bone marrow cell proliferation test at 100μg/ml concentration...
July 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28680905/high-cellular-monocyte-activation-in-people-living-with-human-immunodeficiency-virus-on-combination-antiretroviral-therapy-and-lifestyle-matched-controls-is-associated-with-greater-inflammation-in-cerebrospinal-fluid
#5
Thijs Booiman, Ferdinand W Wit, Irma Maurer, Davide De Francesco, Caroline A Sabin, Agnes M Harskamp, Maria Prins, Paolo Garagnani, Chiara Pirazzini, Claudio Franceschi, Dietmar Fuchs, Magnus Gisslén, Alan Winston, Peter Reiss, Neeltje A Kootstra
BACKGROUND: Increased monocyte activation and intestinal damage have been shown to be predictive for the increased morbidity and mortality observed in treated people living with human immunodeficiency virus (PLHIV). METHODS: A cross-sectional analysis of cellular and soluble markers of monocyte activation, coagulation, intestinal damage, and inflammation in plasma and cerebrospinal fluid (CSF) of PLHIV with suppressed plasma viremia on combination antiretroviral therapy and age and demographically comparable HIV-negative individuals participating in the Comorbidity in Relation to AIDS (COBRA) cohort and, where appropriate, age-matched blood bank donors (BBD)...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28671185/a-point-of-care-microfluidic-biochip-for-quantification-of-cd64-expression-from-whole-blood-for-sepsis-stratification
#6
U Hassan, T Ghonge, B Reddy, M Patel, M Rappleye, I Taneja, A Tanna, R Healey, N Manusry, Z Price, T Jensen, J Berger, A Hasnain, E Flaugher, S Liu, B Davis, J Kumar, K White, R Bashir
Sepsis, a potentially life-threatening complication of an infection, has the highest burden of death and medical expenses in hospitals worldwide. Leukocyte count and CD64 expression on neutrophils (nCD64) are known to correlate strongly with improved sensitivity and specificity of sepsis diagnosis at its onset. A major challenge is the lack of a rapid and accurate point-of-care (PoC) device that can perform these measurements from a minute blood sample. Here, we report a PoC microfluidic biochip to enumerate leukocytes and quantify nCD64 levels from 10 μl of whole blood without any manual processing...
July 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/28652325/transmembrane-features-governing-fc-receptor-cd16a-assembly-with-cd16a-signaling-adaptor-molecules
#7
Alfonso Blázquez-Moreno, Soohyung Park, Wonpil Im, Melissa J Call, Matthew E Call, Hugh T Reyburn
Many activating immunoreceptors associate with signaling adaptor molecules like FcεR1γ or CD247. FcεR1γ and CD247 share high sequence homology and form disulphide-linked homodimers that contain a pair of acidic aspartic acid residues in their transmembrane (TM) domains that mediate assembly, via interaction with an arginine residue at a similar register to these aspartic acids, with the activating immunoreceptors. However, this model cannot hold true for receptors like CD16A, whose TM domains do not contain basic residues...
July 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28625325/importance-of-cd117-in-the-assignation-of-a-myeloid-lineage-in-acute-leukemias
#8
Alan Pomerantz, Sergio Rodríguez-Rodríguez, Roberta Demichelis-Gómez, Georgina Barrera-Lumbreras, Olga V Barrales-Benítez, María José Díaz-Huízar, Monica Goldberg-Murow, Xavier López-Karpovitch, Álvaro Aguayo
The correct classification of acute leukemias (AL) is an essential part in the evaluation of any patient with this disease. Historically, CD117 has been an important asset in the diagnosis of patients with mixed-phenotype acute leukemia (MPAL). In an attempt to simplify the diagnosis of MPAL with fewer and more lineage specific markers, the World Health Organization (WHO) proposed in 2008 a new criteria for the diagnosis of this type of AL, which excluded CD117 from the myeloid markers that are utilized to diagnose MPAL...
February 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/28611041/an-immunosuppressive-dendritic-cell-subset-accumulates-at-secondary-sites-and-promotes-metastasis-in-pancreatic-cancer
#9
Justin A Kenkel, William W Tseng, Matthew G Davidson, Lorna L Tolentino, Okmi Choi, Nupur Bhattacharya, E Scott Seeley, Daniel A Winer, Nathan E Reticker-Flynn, Edgar G Engleman
Pancreatic ductal adenocarcinoma (PDAC) after complete surgical resection is often followed by distant metastatic relapse for reasons that remain unclear. In this study, we investigated how the immune response at secondary sites affects tumor spread in murine models of metastatic PDAC. Early metastases were associated with dense networks of CD11b(+)CD11c(+)MHC-II(+)CD24(+)CD64(low)F4/80(low) dendritic cells (DC), which developed from monocytes in response to tumor-released GM-CSF. These cells uniquely expressed MGL2 and PD-L2 in the metastatic microenvironment and preferentially induced the expansion of T regulatory cells (Treg) in vitro and in vivo Targeted depletion of this DC population in Mgl2(DTR) hosts activated cytotoxic lymphocytes, reduced Tregs, and inhibited metastasis development...
August 1, 2017: Cancer Research
https://www.readbyqxmd.com/read/28593077/alteration-in-leukocyte-subsets-and-expressions-of-fc%C3%AE-r-and-complement-receptors-among-female-ragpickers-in-eastern-india
#10
Nandan K Mondal, Shabana Siddique, Madhuchanda Banerjee, Sanghita Roychoudhury, Sayali Mukherjee, Mark S Slaughter, Twisha Lahiri, Manas R Ray
BACKGROUND: There are a million ragpickers in India who gather and trade recyclable municipal solid wastes materials for a living. The objective of this study was to examine whether their occupation adversely affects their immunity. METHODS: Seventy-four women ragpickers (median age, 30 years) and 65 age-matched control housemaids were enrolled. Flow cytometry was used to measure leukocyte subsets, and leukocyte expressions of Fcγ receptor I (CD64), FcγRIII (CD16), complement receptor 1 (CD35) and CR3 (CD11b/CD18), and CD14...
June 2017: Safety and Health At Work
https://www.readbyqxmd.com/read/28576848/identification-of-fc-gamma-receptor-glycoforms-that-produce-differential-binding-kinetics-for-rituximab
#11
Jerrard M Hayes, Asa Frostell, Robert Karlsson, Steffen Müller, Silvia Millan-Martin, Martin Pauers, Franziska Reuss, Eoin Cosgrave, Cecilia Anneren, Gavin P Davey, Pauline M Rudd
Fc gamma receptors (FcyR) bind the Fc region of antibodies and therefore play a prominent role in antibody-dependent cell-based immune responses such as ADCC, CDC and ADCP. The immune effector cell activity is directly linked to a productive molecular engagement of FcyRs where both the protein and glycan moiety of antibody and receptor can affect the interaction and in the present study we focus on the role of the FcyR glycans in this interaction. We provide a complete description of the glycan composition of Chinese hamster ovary (CHO) expressed human Fcy receptors RI (CD64), RIIa Arg131/His131 (CD32a), RIIb (CD32b) and RIIIa Phe158/Val158 (CD16a) and analyze the role of the glycans in the binding mechanism with IgG...
June 2, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28574201/standardized-high-sensitivity-flow-cytometry-testing-for-paroxysmal-nocturnal-hemoglobinuria-in-children-with-acquired-bone-marrow-failure-disorders-a-single-center-us-study
#12
Rachel E Donohue, Andrea N Marcogliese, Ghadir S Sasa, M Tarek Elghetany, Alka A Redkar, Alison A Bertuch, Choladda V Curry
BACKGROUND: Paroxysmal nocturnal hemoglobinuria (PNH) is a rare, acquired hematopoietic stem cell disorder that has not been well-documented in children, particularly those with acquired bone marrow failure disorders (ABMFD)-acquired aplastic anemia (AAA) and myelodysplastic syndrome (MDS). Therefore, we sought to determine the prevalence of PNH populations in children with ABMFD. METHODS: PNH testing was performed in children with an ABMFD diagnosis using high sensitivity (≥0...
June 2, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28514689/identification-of-a-human-clonogenic-progenitor-with-strict-monocyte-differentiation-potential-a-counterpart-of-mouse-cmops
#13
Shunsuke Kawamura, Nobuyuki Onai, Fuyuki Miya, Taku Sato, Tatsuhiko Tsunoda, Kazutaka Kurabayashi, Satoshi Yotsumoto, Shoko Kuroda, Katsuto Takenaka, Koichi Akashi, Toshiaki Ohteki
Monocytes give rise to macrophages and dendritic cells (DCs) under steady-state and inflammatory conditions, thereby contributing to host defense and tissue pathology. A common monocyte progenitor (cMoP) that is strictly committed to the monocyte lineage has been recently identified in mice. Here, we identified human cMoPs as a CLEC12A(hi)CD64(hi) subpopulation of conventional granulocyte-monocyte progenitors (cGMPs) in umbilical cord blood and in bone marrow. Human cMoPs gave rise to monocyte subsets without showing any potential for differentiating into myeloid or lymphoid cells...
May 16, 2017: Immunity
https://www.readbyqxmd.com/read/28502306/-detection-and-analysis-of-immune-molecules-in-leukemia-cell-surfaces-of-acute-promyelocytic-leukemia
#14
Ting Dong, Yaxian Jiang, Zhengfa Li, Hongmei Ouyang, Qin Zhang
Objective To investigate the immunophenotypic characteristics of acute promyelocytic leukemia (APL) and its clinical significance. Methods Immunophenotyping was performed by four-color flow cytometry with CD45/SSC-lin gating for neoplastic cells and was divided into five levels according to the intensity of antigen expression. Results The expression intensity and percentage of typical APL phenotypes were: myeloperoxidase (MPO) and CD33 were consistently expressed (100%); CD38 (82.35%), CD13 (64.71%), CD64 (50%), CD123 (47...
May 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28501938/zoledronic-acid-renders-human-m1-and-m2-macrophages-susceptible-to-v%C3%AE-2-%C3%AE-%C3%AE-t-cell-cytotoxicity-in-a-perforin-dependent-manner
#15
Daniel W Fowler, John Copier, Angus G Dalgleish, Mark D Bodman-Smith
Vδ2(+) T cells are a subpopulation of γδ T cells in humans that are cytotoxic towards cells which accumulate isopentenyl pyrophosphate. The nitrogen-containing bisphosphonate, zoledronic acid (ZA), can induce tumour cell lines to accumulate isopentenyl pyrophosphate, thus rendering them more susceptible to Vδ2(+) T cell cytotoxicity. However, little is known about whether ZA renders other, non-malignant cell types susceptible. In this study we focussed on macrophages (Mϕs), as these cells have been shown to take up ZA...
May 13, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28446314/-changes-of-neutrophil-cd64-in-patients-with-hematological-mali-gnancies-combined-with-bacterial-infections
#16
Xin Dai, Jian-Ping Li, Wen-Qian Li, Jian-Ming Feng
OBJECTIVE: To explore the changes of CD64 on surface of neutrophils in patients with hematological malignancies combined with bacterial infections. METHODS: Ninety-seven patients with hematological tumor admitted in our hospital from August 2014 to February 2016 were selected and divided into 2 groups: infection group(50 cases) and noninfection group(47 cases) according to their symptoms, physical sings and blood culture results for microbiologic detection. The CD46 index on surface of neutrophils, serum C- reactive protein (CRP), neutrophil count (NC) and procalcitonin (PCT) level were detected by flow cytometry...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28442521/application-of-flow-cytometry-in-the-early-diagnosis-of-neonatal-sepsis
#17
Mustafa Aydin, Sumeyye Barut, H Handan Akbulut, Sit Ucar, Aysen Orman
GOALS: To raise awareness of the utility of flow cytometric detection of inflammatory markers in the early diagnosis of neonatal sepsis. PROCEDURES: In accordance with the Töllner scoring system, cases with ≥10 points are accepted as having "clinical sepsis" and cases with 0-4 points as having "no sepsis". The study group consisted of 50 newborns with clinical sepsis as well as a control group of 50 newborns without sepsis. In all cases, blood counts, C-reactive protein (CRP) levels, and procalcitonin (PCT) levels were recorded...
March 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28415754/gene-modified-nk-92mi-cells-expressing-a-chimeric-cd16-bb-%C3%AE-or-cd64-bb-%C3%AE-receptor-exhibit-enhanced-cancer-killing-ability-in-combination-with-therapeutic-antibody
#18
Ying Chen, Fengtao You, Licui Jiang, Jialu Li, Xuejun Zhu, Yangyi Bao, Xiang Sun, Xiaowen Tang, Huimin Meng, Gangli An, Bozhen Zhang, Lin Yang
Natural killer (NK) cells play a pivotal role in monoclonal antibody-mediated immunotherapy through the antibody-dependent cell-mediated cytotoxicity (ADCC) mechanism. NK-92MI is an interleukin-2 (IL-2)-independent cell line, which was derived from NK-92 cells with superior cytotoxicity toward a wide range of tumor cells in vitro and in vivo. Nonetheless, the Fc-receptor (CD16) that usually mediates ADCC is absent in NK-92 and NK-92MI cells. To apply NK-92MI cell-based immunotherapy to cancer treatment, we designed and generated two chimeric receptors in NK-92MI cells that can bind the Fc portion of human immunoglobulins...
June 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28400539/mass-cytometry-deep-phenotyping-of-human-mononuclear-phagocytes-and-myeloid-derived-suppressor-cells-from-human-blood-and-bone-marrow
#19
Mikael Roussel, P Brent Ferrell, Allison R Greenplate, Faustine Lhomme, Simon Le Gallou, Kirsten E Diggins, Douglas B Johnson, Jonathan M Irish
The monocyte phagocyte system (MPS) includes numerous monocyte, macrophage, and dendritic cell (DC) populations that are heterogeneous, both phenotypically and functionally. In this study, we sought to characterize those diverse MPS phenotypes with mass cytometry (CyTOF). To identify a deep phenotype of monocytes, macrophages, and DCs, a panel was designed to measure 38 identity, activation, and polarization markers, including CD14, CD16, HLA-DR, CD163, CD206, CD33, CD36, CD32, CD64, CD13, CD11b, CD11c, CD86, and CD274...
April 11, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28396236/skin-inflammation-induced-by-lupus-serum-was-inhibited-in-il-1r-deficient-mice
#20
Xiaoyan Li, Xuanxuan Guo, Huicheng Liu, Gongming Gao, Guangqiong Xu, Xibin Fei, Xiang Fang, Wei Qiao, Guo-Min Deng
Skin inflammation induced by lupus serum is a useful tool to investigate the pathogenesis of lupus skin injury. IL-1 is a proinflammatory cytokine, and its role in lupus skin lesion is still unclear. We determined the role of IL-1 in lupus skin injury by using gene deficient mice. We found that skin inflammation induced by lupus serum was significantly reduced in IL-1R deficient mice and caspase-1 deficient mice. IL-1R deficiency did not affect the expression of FcγRI (CD64), FcγRII (CD32) and MHC class II (CD74) induced by lupus serum...
July 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
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