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https://www.readbyqxmd.com/read/29334374/transitory-presence-of-myeloid-derived-suppressor-cells-in-neonates-is-critical-for-control-of-inflammation
#1
Yu-Mei He, Xing Li, Michela Perego, Yulia Nefedova, Andrew V Kossenkov, Erik A Jensen, Valerian Kagan, Yu-Feng Liu, Shu-Yu Fu, Qing-Jian Ye, Yan-Hong Zhou, Lai Wei, Dmitry I Gabrilovich, Jie Zhou
Myeloid-derived suppressor cells (MDSCs) are pathologically activated and relatively immature myeloid cells that have been implicated in the immunological regulation of many pathologic conditions. Phenotypically and morphologically, MDSCs are similar to neutrophils (PMN-MDSCs) and monocytes (M-MDSCs). However, they have potent suppressive activity and distinct gene expression profiles and biochemical characteristics. No or very few MDSCs are observed in steady-state physiological conditions. Therefore, until recently, accumulation of MDSCs was considered a consequence of pathological processes or pregnancy...
January 15, 2018: Nature Medicine
https://www.readbyqxmd.com/read/29333081/innate-immunity-recovers-earlier-than-acquired-immunity-during-severe-postoperative-immunosuppression
#2
Gunnar Lachmann, Clarissa von Haefen, Johannes Kurth, Fatima Yuerek, Claudia Spies
Background: Postoperative immune suppression, particularly a loss of cell-mediated immunity, is commonly seen after surgery and is associated with worse outcome, i.e. delayed wound healing, infections, sepsis, multiple-organ failure and cancer recurrence. However, the recovery of immune cells focusing on differences between innate and acquired immunity during severe postoperative immunosuppression is not investigated. Methods: In this retrospective randomized controlled trial (RCT) subgroup analysis, 10 postoperatively immune suppressed patients after esophageal or pancreatic resection were analyzed...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29331029/characterization-of-cd34-hematopoietic-cells-in-systemic-mastocytosis-potential-role-in-disease-dissemination
#3
Andrea Mayado, Cristina Teodosio, Noelia Dasilva Freire, Maria Jara-Acevedo, Andrés C Garcia-Montero, Ivan Álvarez-Twose, Laura Sánchez-Muñoz, Almudena Matito, Carolina Caldas, Javier I Muñoz-González, Ana Henriques, José I Sánchez-Gallego, Luis Escribano, Alberto Orfao
BACKGROUND: Recent studies show that most systemic mastocytosis (SM) patients, including indolent SM (ISM) with (ISMs+) and without skin lesions (ISMs-), carry the KIT D816V mutation in PB leukocytes. We investigated the potential association between the degree of involvement of BM hematopoiesis by the KIT D816V mutation and the distribution of different maturation-associated compartments of bone marrow (BM) and peripheral blood (PB) CD34+ hematopoietic precursors (HPC) in ISM, and identified the specific PB cell compartments that carry this mutation...
January 13, 2018: Allergy
https://www.readbyqxmd.com/read/29327065/blood-predictive-biomarkers-for-nivolumab-in-advanced-melanoma
#4
Edouard Chasseuil, Mélanie Saint-Jean, Hannah Chasseuil, Lucie Peuvrel, Gaëlle Quéreux, Jean-Michel Nguyen, Aurélie Gaultier, Emilie Varey, Amir Khammari, Brigitte Dréno
Nivolumab response rate is 40% in metastatic melanoma. Few studies have evaluated pre-treatment biomarkers predictive of response. The aim of this study was to identify potential peripheral blood biomarkers associated with survival in patients with advanced melanoma treated with nivolumab. All advanced melanoma cases treated with anti-programmed cell death protein 1 (anti-PD1) over a 3-year period in our department were identified. For each case, 9 potential blood biomarkers were identified. Bivariate and multivariate analyses, adjusted for the American Joint Committee on Cancer (AJCC) classification stage, Eastern Cooperative Oncology Group (ECOG) performance status, lactate dehydrogenase (LDH) level and failure to respond to first-line therapy, were used to test the association between biomarkers and overall survival (primary outcome) or progression-free survival (secondary outcome)...
December 20, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/29323706/the-origins-and-homeostasis-of-monocytes-and-tissue-resident-macrophages-in-physiological-situation
#5
REVIEW
Yang Zhao, Weilong Zou, Junfeng Du, Yong Zhao
Monocytes and macrophages are critical effectors and regulators of innate immune response. They not only play crucial and distinctive roles in homeostasis, but also contribute to some pathologic processes. The heterogeneity of the macrophage lineage has been widely recognized and, in part, is a result of the specialization of resident macrophages in particular tissue microenvironments. Monocytes are usually known to originate in the bone marrow from a common myeloid progenitor that is shared with neutrophils, and they are then released into the peripheral blood...
January 11, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29321478/reprogramming-of-pro-inflammatory-human-macrophages-to-an-anti-inflammatory-phenotype-by-bile-acids
#6
Marianne Wammers, Anna-Kathrin Schupp, Johannes G Bode, Christian Ehlting, Stephanie Wolf, René Deenen, Karl Köhrer, Dieter Häussinger, Dirk Graf
Cholestasis is caused by autoimmune reactions, drug-induced hepatotoxicity, viral infections of the liver and the obstruction of bile ducts by tumours or gallstones. Cholestatic conditions are associated with impaired innate and adaptive immunity, including alterations of the cellular functions of monocytes, macrophages, NK cells and T-cells. Bile acids act as signalling molecules, affecting lipopolysaccharide (LPS)-induced cytokine expression in primary human macrophages. The present manuscript investigates the impact of bile acids, such as taurolithocholic acid (TLC), on the transcriptome of human macrophages in the presence or absence of LPS...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29317963/neutrophil-to-lymphocyte-ratio-predicts-overall-survival-of-advanced-non-small-cell-lung-cancer-harboring-mutant-epidermal-growth-factor-receptor
#7
Seigo Minami, Yoshitaka Ogata, Shouichi Ihara, Suguru Yamamoto, Kiyoshi Komuta
Background: Neutrophil-to-lymphocyte ratio (NLR) and lymphocyte-to-monocyte ratio (LMR) have been demonstrated to be prognostic biomarkers in various cancers, including non-small cell lung cancer (NSCLC). However, little has been known about these two ratios for a specific population of NSCLC harboring active epidermal growth factor receptor (EGFR) mutation. Methods: We retrospectively reviewed electrical medical records of 152 patients who met the following criteria: NSCLC harboring mutant EGFR, EGFR-tyrosine kinase inhibitor (EGFR-TKI) monotherapy initiated between October 2007 and February 2017 at our hospital, stage III-IV or post-surgical recurrence...
December 2017: World Journal of Oncology
https://www.readbyqxmd.com/read/29314737/airway-inflammation-in-sickle-cell-disease-a-translational-perspective
#8
REVIEW
Aliva De, Deepa Manwani, Deepa Rastogi
Asthma and sickle cell disease (SCD) are common chronic conditions in children of African ancestry that are characterized by cough, wheeze, and obstructive patterns on pulmonary function. Pulmonary function testing in children with SCD has estimated a prevalence of obstructive lung disease ranging from 13% to 57%, and airway hyper-responsiveness of up to 77%, independent of a diagnosis of asthma. Asthma co-existing with SCD is associated with increased risk of acute chest syndrome (ACS), respiratory symptoms, pain episodes, and death...
January 4, 2018: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29314019/white-blood-cell-differentials-in-dogs-with-congestive-heart-failure-chf-in-comparison-to-those-in-dogs-without-cardiac-disease
#9
J Hamilton-Elliott, E Ambrose, R Christley, J Dukes-McEwan
OBJECTIVES: To determine if dogs with congestive heart failure have different white blood cell differential cell counts than dogs without cardiac disease. MATERIALS AND METHODS: In total, 72 dogs with congestive heart failure and 143 controls were included in this retrospective study. Signalment, white blood cell differential counts and echocardiography data were retrieved. Basic statistical analysis was performed on white blood cell differential counts, and principal component analysis was used to compare these counts between cases and controls, with age, gender and case/control status as supplementary variables...
January 4, 2018: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/29312554/aging-increases-the-expression-of-lung-cincs-and-mcp-1-in-senile-patients-with-pneumonia
#10
Wei Li, Cheng Ding, Shaojun Yin
Objective: To explore the relationship between aging and the expression of monocyte chemoattractant protein (MCP) and cytokine-induced neutrophil chemoattractant (CINCs) in patients with pneumonia. Results: Bacteria counts in senile group were significantly higher than non-senile group, and while white blood cell and neutrophil counts in senile group were observably lower than non-senile group. The concentration of MCP-1 was significantly higher in senile group compared with the non-senile group, and the expression of CINC-1 and CINC-2α was also higher in senile group...
December 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29311091/neutralizing-%C3%AE-toxin-accelerates-healing-of-staphylococcus-aureus-infected-wounds-in-normal-and-diabetic-mice
#11
Roger V Ortines, Haiyun Liu, Lily I Cheng, Taylor S Cohen, Heather Lawlor, Abhishek Gami, Yu Wang, Carly A Dillen, Nathan K Archer, Robert J Miller, Alyssa G Ashbaugh, Bret L Pinsker, Mark C Marchitto, Christine Tkaczyk, C Kendall Stover, Bret R Sellman, Lloyd S Miller
Staphylococcus aureus wound infections delay healing and result in invasive complications such as osteomyelitis, especially in the setting of diabetic foot ulcers. In preclinical animal models of S. aureus skin infection, antibody neutralization of α-toxin (AT), a S. aureus secreted pore-forming cytolytic toxin, reduces disease severity by inhibiting skin necrosis and restoring effective host immune responses. However, whether therapeutic neutralization of α-toxin is effective against S. aureus-infected wounds is unclear...
January 8, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29310959/increased-expression-of-t-cell-immunoglobulin-and-mucin-domain-3-on-cd14-monocytes-is-associated-with-systemic-inflammatory-reaction-and-brain-injury-in-patients-with-spontaneous-intracerebral-hemorrhage
#12
ChangJun Xu, HaiTao Ge, Tao Wang, JianBing Qin, De Liu, YuGuang Liu
OBJECTIVE: To study the expression of T cell immunoglobulin and mucin domain 3 (Tim-3) on peripheral blood immunocytes, and the relationship between Tim-3 and the systemic inflammatory response or brain injury in patients with intracerebral hemorrhage (ICH). METHODS: According to the volume of hematoma at 12 hours after onset of ICH, 60 newly diagnosed patients with ICH were divided into the small (volume of hematoma <30 mL, 30 cases) and large (volume of hematoma ≥30 mL, 30 cases) ICH groups...
January 5, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29310473/a-new-approach-for-diagnosing-chronic-myelomonocytic-leukemia-using-structural-parameters-of-sysmex-xntm-analyzers-in-routine-laboratory-practice
#13
Françoise Schillinger, Elise Sourdeau, Marouane Boubaya, Lucile Baseggio, Sylvain Clauser, Edouard Cornet, Camille Debord, Jean-Pierre Defour, Frédérique Dubois, Marion Eveillard, Anne-Cécile Galoisy, Marie-Odile Geay, François Mullier, Vanessa Nivaggioni, Valérie Soenen, Pascal Morel, Francine Garnache-Ottou, Emily Ronez, Valérie Bardet, Eric Deconinck
According to WHO recommendations, diagnosis of chronic myelomonocytic leukemia (CMML) beforehand requires microscopic examination of peripheral blood to identify dysplasia and/or blasts when monocytes are greater or equal to 1.0 × 109/L and 10% of leucocytes. We analyzed parameters derived from SysmexTM XN analyzers to improve the management of microscopic examination for monocytosis. We analyzed results of the complete blood count and the positioning and dispersion parameters of polymorphonuclear neutrophils and monocytes in 61 patients presenting with CMML and 635 control patients presenting with a reactive monocytosis...
January 8, 2018: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/29307055/novel-acute-kidney-injury-biomarkers-their-characteristics-utility-and-concerns
#14
REVIEW
Braian M Beker, Mateo G Corleto, Cecilia Fieiras, Carlos G Musso
Acute kidney injury (AKI) consists of a rapid renal function decline which usually increases serum urea and creatinine levels. Since kidney injury begins by inducing biological and molecular changes which evolve to cellular damage, biomarkers could be used as tools for monitoring early AKI appearance, and predicting its recovery. Among the main AKI biomarkers the neutrophil gelatinase-associated lipocalin, cystatin C, kidney injury molecule-1, monocyte chemotactic peptide-1, N-acetyl-β-D-glucosaminidase, interleukin-18, liver-type fatty acid-binding protein, netrin-1, cycle arrest markers, endogenous ouabain, selenium-binding protein 1, and BPIFA2 marker, have been described...
January 6, 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29306942/targeting-neutrophils-in-severe-asthma-via-siglec-9
#15
Zi Chen, Fang-Fang Bai, Lu Han, Jin Zhu, Tao Zheng, Zhou Zhu, Lin-Fu Zhou
Severe asthma comprises only 5% of patients with asthma, but the burden it brings to the social health system accounts for more than half of all asthmatics. Clinical evidence shows that severe asthma is often linked to the recruitment and activation of neutrophils in the airways. However, the underlying molecular and immunological mechanisms of neutrophilia in severe asthma are not clear and currently available drugs exert only limited effects on neutrophilic inflammation. Great efforts are underway to address the mystery of neutrophilic inflammation in chronic respiratory disorders...
January 6, 2018: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29304171/mcp-1-kc-like-and-il-8-as-critical-mediators-of-pathogenesis-caused-by-babesia-canis
#16
Asier Galán, Iva Mayer, Renata Barić Rafaj, Krešo Bendelja, Velimir Sušić, José Joaquín Cerón, Vladimir Mrljak
Canine babesiosis caused by the intraerythrocytic protozoan parasite Babesia canis is a tick-borne disease characterized by a host response that involves both cellular and humoral immunity. This study focuses on the secretion of cytokines Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF), Keratinocyte Chemotactic-like (KC-like), Interleukins (IL)-2, IL-7, IL-8, IL-10, IL-15, IL-18 and Monocyte Chemotactic Protein-1 (MCP-1) in babesiosis caused by Babesia canis upon treatment with Imizol®. We assessed time dependent changes in cytokine levels and tested whether these changes correlate with pathogenesis of the disease...
2018: PloS One
https://www.readbyqxmd.com/read/29297805/the-effects-of-migratory-flight-on-hematologic-parameters-in-northern-bald-ibises-geronticus-eremita
#17
Gabriela Stanclova, Ilse Schwendenwein, Olaf Merkel, Lukas Kenner, John Dittami, Johannes Fritz, Alexandra Scope
Under the project of "Human-Led Migration," the authors had the unique opportunity to accompany hand-raised northern bald Iibises (NBIs; Geronticus eremita) during migration, which occurred in stages from Bavaria, Germany, to southern Tuscany, Italy. The aim of this study was to investigate the immediate effects of flight, with respect to flight duration, and the more delayed recovery effects on hematologic variables. A total of 31 birds were sampled. Blood samples were taken immediately before takeoff, after landing, and 1 day after the flight...
December 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/29296907/tlr2-agonism-reverses-chemotherapy-induced-neutropenia-in-macaca-fascicularis
#18
Nicholas J Laping, Michael P DeMartino, Joshua E Cottom, Jeffrey M Axten, John G Emery, Jeffrey H Guss, Miriam Burman, James J Foley, Mui Cheung, Allen Oliff, Sanjay Kumar
Neutropenia is a common consequence of radiation and chemotherapy in cancer patients. The resulting immunocompromised patients become highly susceptible to potentially life-threatening infections. Granulocyte colony-stimulating factor (G-CSF) is known to stimulate neutrophil production and is widely used as a treatment of chemotherapy-induced neutropenia. A small-molecule G-CSF secretagogue without a requirement for refrigerated supply chain would offer a more convenient and cost-effective treatment of chemotherapy-induced neutropenia...
December 12, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296734/gene-correction-of-hax1-reversed-kostmann-disease-phenotype-in-patient-specific-induced-pluripotent-stem-cells
#19
Erik Pittermann, Nico Lachmann, Glenn MacLean, Stephan Emmrich, Mania Ackermann, Gudrun Göhring, Brigitte Schlegelberger, Karl Welte, Axel Schambach, Dirk Heckl, Stuart H Orkin, Tobias Cantz, Jan-Henning Klusmann
Severe congenital neutropenia (SCN, Kostmann disease) is a heritable disorder characterized by a granulocytic maturation arrest. Biallelic mutations in HCLS1 associated protein X-1 (HAX1) are frequently detected in affected individuals, including those of the original pedigree described by Kostmann in 1956. To date, no faithful animal model has been established to study SCN mediated by HAX1 deficiency. Here we demonstrate defective neutrophilic differentiation and compensatory monocyte overproduction from patient-derived induced pluripotent stem cells (iPSCs) carrying the homozygous HAX1W44X nonsense mutation...
June 13, 2017: Blood Advances
https://www.readbyqxmd.com/read/29296731/human-and-murine-splenic-neutrophils-are-potent-phagocytes-of-igg-opsonized-red-blood-cells
#20
Sanne M Meinderts, Per-Arne Oldenborg, Boukje M Beuger, Thomas R L Klei, Johanna Johansson, Taco W Kuijpers, Takashi Matozaki, Elise J Huisman, Masja de Haas, Timo K van den Berg, Robin van Bruggen
Red blood cell (RBC) clearance is known to occur primarily in the spleen, and is presumed to be executed by red pulp macrophages. Erythrophagocytosis in the spleen takes place as part of the homeostatic turnover of RBCs to remove old RBCs. It can be strongly promoted by immunoglobulin G (IgG) opsonization of RBCs, a condition that can occur as a consequence of autoantibody or alloantibody formation. The purpose of our study was to investigate which phagocytes are involved in IgG-mediated RBC clearance in the human spleen...
June 13, 2017: Blood Advances
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