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https://www.readbyqxmd.com/read/29782179/early-intravascular-events-are-associated-with-development-of-ards
#1
Raja-Elie E Abdulnour, Tina Gunderson, Ioanna Barkas, Jack Y Timmons, Cindy Barnig, Michelle Gong, Daryl J Kor, Ognjen Gajic, Daniel Talmor, Rickey E Carter, Bruce D Levy
RATIONALE: The acute respiratory distress syndrome (ARDS) is a devastating illness with limited therapeutic options. A better understanding of early biochemical and immunological events in ARDS could inform the development of new preventive and treatment strategies. OBJECTIVE: To determine select peripheral blood lipid mediator and leukocyte responses in patients at-risk for ARDS. METHODS: Patients at risk for ARDS were randomized as part of a multicenter, double-blind clinical trial of aspirin versus placebo (LIPS-A; NCT01504867)...
May 21, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29769349/hiv-1-activation-of-innate-immunity-depends-strongly-on-the-intracellular-level-of-trex1-and-sensing-of-incomplete-reverse-transcription-products
#2
Swati Kumar, James H Morrison, David Dingli, Eric Poeschla
TREX1 has been reported to degrade cytosolic immune-stimulatory DNA, including viral DNA generated during HIV-1 infection, but the dynamic range of its capacity to suppress innate immune stimulation is unknown and its full role in the viral life cycle remains unclear. A main purpose of our study was to determine how the intracellular level of TREX1 affects HIV-1 activation and avoidance of innate immunity. Using stable over-expression and CRISPR-mediated gene disruption, we engineered a range of TREX1 levels in human THP-1 monocytes...
May 16, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29707619/differences-in-proinflammatory-cytokines-and-monocyte-subtypes-in-older-as-compared-with-younger-kidney-transplant-recipients
#3
Emily C Liang, Maura Rossetti, Tiffany Sidwell, Victoria Groysberg, Gema Sunga, Yael Korin, Sitaram Vangala, Basmah Abdalla, Erik Lum, Suphamai Bunnapradist, Phuong-Thu Pham, Gabriel Danovitch, Elaine F Reed, Joanna Schaenman
Background: The number of elderly patients with end-stage kidney disease requiring kidney transplantation continues to grow. Evaluation of healthy older adults has revealed proinflammatory changes in the immune system, which are posited to contribute to age-associated illnesses via "inflamm-aging." Immunologic dysfunction is also associated with impaired control of infections. Whether these immunologic changes are found in older kidney transplant recipients is not currently known, but may have important implications for risk for adverse clinical outcomes...
March 2018: Transplantation Direct
https://www.readbyqxmd.com/read/29707521/evaluation-by-flow-cytometry-of-mature-monocyte-subpopulations-for-the-diagnosis-and-follow-up-of-chronic-myelomonocytic-leukemia
#4
Tiphanie Picot, Carmen Mariana Aanei, Pascale Flandrin Gresta, Pauline Noyel, Sylvie Tondeur, Emmanuelle Tavernier Tardy, Denis Guyotat, Lydia Campos Catafal
Chronic myelomonocytic leukemia (CMML) is a myelodysplastic/myeloproliferative neoplasm, characterized by persistent monocytosis and dysplasia in at least one myeloid cell lineage. This persistent monocytosis should be distinguished from the reactive monocytosis which is sometimes observed in a context of infections or solid tumors. In 2015, Selimoglu-Buet et al. observed an increased percentage of classical monocytes (CD14+ /CD16- >94%) in the peripheral blood (PB) of CMML patients. In this study, using multiparametric flow cytometry (MFC), we assessed the monocytic distribution in PB samples and in bone marrow aspirates from 63 patients with monocytosis or CMML suspicion, and in seven follow-up blood samples from CMML patients treated with hypomethylating agents (HMA)...
2018: Frontiers in Oncology
https://www.readbyqxmd.com/read/29705238/hcv-modifies-egf-signalling-and-upregulates-production-of-cxcr2-ligands-role-in-inflammation-and-antiviral-immune-response
#5
Christina Groepper, Kerstin Rufinatscha, Nadja Schröder, Sabine Stindt, Christian Ehlting, Ute Albrecht, Hans H Bock, Ralf Bartenschlager, Dieter Häussinger, Johannes G Bode
BACKGROUND & AIMS: To affect immune response and inflammation, the hepatitis C virus (HCV) substantially influences intercellular communication pathways that are decisive for immune cell recruitment. The present study investigates mechanisms by which HCV modulates chemokine-mediated intercellular communication of the infected cells. METHODS: Chemokine expression is studied in HCVcc -infected cell lines or cell lines harbouring a subgenomic replicon as well as in serum samples from patients...
April 26, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29700367/differential-interaction-of-platelet-derived-extracellular-vesicles-with-leukocyte-subsets-in-human-whole-blood
#6
René Weiss, Marion Gröger, Sabine Rauscher, Birgit Fendl, Tanja Eichhorn, Michael B Fischer, Andreas Spittler, Viktoria Weber
Secretion and exchange of biomolecules via extracellular vesicles (EVs) are crucial mechanisms in intercellular communication, and the roles of EVs in infection, inflammation, or thrombosis have been increasingly recognized. EVs have emerged as central players in immune regulation and can enhance or suppress the immune response, depending on the state of donor and recipient cells. We investigated the interaction of blood cell-derived EVs with leukocyte subpopulations (monocytes and their subsets, granulocytes, B cells, T cells, and NK cells) directly in whole blood using a combination of flow cytometry, imaging flow cytometry, cell sorting, and high resolution confocal microscopy...
April 26, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29696395/associations-of-intestinal-helminth-infections-with-health-parameters-of-spring-migrating-female-lesser-scaup-aythya-affinis-in-the-upper-midwest-usa
#7
J Conner England, Jeffrey M Levengood, Josh M Osborn, Aaron P Yetter, Cory D Suski, Rebecca A Cole, Heath M Hagy
Thousands of lesser scaup (Aythya affinis) die during spring and fall migrations through the upper Midwest, USA, from infections with Cyathocotyle bushiensis and Sphaeridiotrema spp. (Class: Trematoda) after ingesting infected intermediate hosts, such as non-native faucet snails (Bithynia tentaculata). The lesser scaup is a species of conservation concern and is highly susceptible to these infections. We collected female lesser scaup from spring migratory stopover locations throughout Illinois and Wisconsin and assessed biochemical and morphological indicators of health in relation to intestinal helminth loads...
April 25, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29682887/biological-effects-of-ni-ii-on-monocytes-and-macrophages-in-normal-and-hyperglycemic-environments
#8
Monica Chana, Jill B Lewis, Ryan Davis, Yolanda Elam, David Hobbs, Petra E Lockwood, John C Wataha, Regina L Messer
Corrosion and release of nickel ions from biomedical alloys are well documented, but little is still known about the effects of released nickel ions on cellular function with recurrent inflammatory challenges. Evidence suggests Ni(II) ions amplify LPS-induced secretion of several pro-inflammatory cytokines from monocytes. Exacerbating the inflammatory response, hyperglycemic conditions also affect monocytic function. This study investigated how Ni(II) and hyperglycemic conditions, both singly and in combination, alter monocyte proliferation, mitochondrial activity, inflammatory responses, and differentiation...
April 16, 2018: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29650491/fecal-microbiota-composition-drives-immune-activation-in-hiv-infected-individuals
#9
Charles Preston Neff, Owen Krueger, Kathy Xiong, Sabrina Arif, Nichole Nusbacher, Jennifer M Schneider, Annie W Cunningham, Abigail Armstrong, Sam Li, Martin D McCarter, Thomas B Campbell, Catherine A Lozupone, Brent E Palmer
The inflammatory properties of the enteric microbiota of Human Immunodeficiency Virus (HIV)-infected individuals are of considerable interest because of strong evidence that bacterial translocation contributes to chronic immune activation and disease progression. Altered enteric microbiota composition occurs with HIV infection but whether altered microbiota composition or increased intestinal permeability alone drives peripheral immune activation is controversial. To comprehensively assess the inflammatory properties of HIV-associated enteric microbiota and relate these to systemic immune activation, we developed methods to purify whole fecal bacterial communities (FBCs) from stool for use in in vitro immune stimulation assays with human cells...
March 26, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29642771/restoration-of-peripheral-intermediate-and-classical-monocytes-expressing-hla-dr-in-patients-with-lung-adenocarcinoma-after-platinum-based-chemotherapy
#10
Selma Rivas-Fuentes, Anjarath Higuera Iglesias, Ana García Trejo, Daniel Yair Chavarría Castro, Norma Inclán Figueroa, Teresa Aguirre Pérez, Renata Báez Saldaña, Patricia Gorocica Rosete
Lung adenocarcinoma represents one of the lung cancer subtypes with major prevalence. Accumulating evidence indicates that the immune system plays an important role in the evolution of the neoplastic process; additionally, several reports suggest that chemotherapy has an immunomodulatory effect. In order to identify the peripheral subpopulations of leukocytes that may change after chemotherapy, we evaluated several peripheral immune subpopulations of monocytes and lymphocytes by multicolor flow cytometry. In addition, we also measured cytokines and growth factors on plasma in order to evaluate the pro-inflammatory context in patients with lung adenocarcinoma after chemotherapy...
January 1, 2018: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/29624852/cryopreserved-whole-blood-for-the-quantification-of-monocyte-t-cell-and-nk-cell-subsets-and-monocyte-receptor-expression-by-multi-color-flow-cytometry-a-methodological-study-based-on-participants-from-the-canadian-longitudinal-study-on-aging
#11
Chris P Verschoor, Vikas Kohli
Immunophenotyping by multi-color flow cytometry is arguably the best tool to identify and quantify distinct cell lineages from the peripheral blood and other biological fluids/tissues. Effective in both clinical and research settings, it can be used to estimate the frequency of a given cell type or measure its phenotypic or functional properties. Normally, immunophenotyping is performed in fresh or fractionated blood (i.e., PBMCs) the same day, or within 24 hours of collection; however, this may not be feasible for all study designs...
April 6, 2018: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/29603382/the-continuum-of-monocyte-phenotypes-experimental-evidence-and-prognostic-utility-in-assessing-cardiovascular-risk
#12
REVIEW
Andrea Cignarella, Serena Tedesco, Roberta Cappellari, Gian Paolo Fadini
The monocyte-macrophage cell lineage represents a major player in innate immunity, and is involved in many physiologic and pathologic conditions. Particularly, monocyte-macrophages play a very important role in atherosclerosis and cardiovascular disease. Monocyte heterogeneity is well recognized but the biologic and clinical meaning of the various monocyte subtypes is not entirely understood. Traditionally, monocytes can be divided in classical, intermediate, and nonclassical based on expression of the surface antigens CD14 and CD16...
March 30, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29596634/expression-and-purification-of-biologically-active-recombinant-rabbit-monocyte-chemoattractant-protein1-in-escherichia-coli
#13
Maryam Boshtam, Hossein Khanahmad Shahreza, Sadegh Feizollahzadeh, Ilnaz Rahimmanesh, Seddigheh Asgary
Monocyte chemoattractant protein 1 (MCP1) with recruiting monocytes is an important factor at the beginning of inflammatory disorders such as atherosclerosis which seems its blocking preclude this process and help improvement of related diseases. To perform clinical research in this field, MCP1 protein is required but firstly, animal studies should be done. As the rabbit is a suitable model for many inflammatory disorders, and Escherichia coli BL21(DE3) (BL21) cell is a high-efficiency host for protein expression, we decided to produce recombinant rabbit MCP1 (rRMCP1) in BL21/pET28a system...
March 27, 2018: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29582352/correlation-analysis-of-monocyte-subsets-and-insulin-resistance-considering-fetuin-a-involvement-in-patients-with-type-2-diabetes
#14
Saori Maruo, Katsuhito Mori, Koka Motoyama, Miyuki Nakamura, Reina Kawarabayashi, Yoshinori Kakutani, Yuko Yamazaki, Tomoaki Morioka, Tetsuo Shoji, Masaaki Inaba, Masanori Emoto
BACKGROUND: Fetuin-A is a multifunctional circulating glycoprotein that can induce insulin resistance. Lately, adipose tissue has gained prominence as an effector site of fetuin-A. Although fetuin-A-induced proinflammatory polarization and migration of macrophages plays a crucial role, it remains obscure whether monocyte subsets in circulation could simulate characteristics of macrophages in adipose tissues. This study aims to investigate the correlation between monocyte subsets with fetuin-A and its relevant insulin resistance...
March 27, 2018: Clinical and Translational Medicine
https://www.readbyqxmd.com/read/29547441/role-of-toll-like-receptor-4-asp299gly-polymorphism-in-the-development-of-cardiovascular-diseases-in-hiv-infected-patients
#15
Laura Tarancon-Diez, Rebeca S De Pablo-Bernal, José L Jiménez, Ana I Álvarez-Ríos, Miguel Genebat, Isaac Rosado-Sánchez, María-Ángeles Muñoz-Fernández, Ezequiel Ruiz-Mateos, Manuel Leal
OBJECTIVE: Cardiovascular diseases (CVDs) are one of the main causes of morbimortality in HIV-infected patients on suppressive antiretroviral therapy. The objective of this work was to evaluate the role of single nucleotide polymorphisms (SNPs) in lipopolysaccharide (LPS) Toll-like receptor 4 (TLR4) and CVDs occurrence in HIV-infected patients. Additionally, the functional consequences of carrying these SNPs were analyzed. METHODS: The association of TLR4 SNPs, Asp299Gly/Thr399Ile with CVDs occurrence was analyzed using multivariate logistic regression models...
May 15, 2018: AIDS
https://www.readbyqxmd.com/read/29540215/glutaminase-1-regulates-the-release-of-extracellular-vesicles-during-neuroinflammation-through-key-metabolic-intermediate-alpha-ketoglutarate
#16
Beiqing Wu, Jianhui Liu, Runze Zhao, Yuju Li, Justin Peer, Alexander L Braun, Lixia Zhao, Yi Wang, Zenghan Tong, Yunlong Huang, Jialin C Zheng
BACKGROUND: Extracellular vesicles (EVs) are important in the intercellular communication of the central nervous system, and their release is increased during neuroinflammation. Our previous data demonstrated an increased release of EVs during HIV-1 infection and immune activation in glial cells. However, the molecular mechanism by which infection and inflammation increase EV release remains unknown. In the current study, we investigated the role of glutaminase 1 (GLS1)-mediated glutaminolysis and the production of a key metabolic intermediate α-ketoglutarate on EV release...
March 14, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29510254/the-functionality-of-prebiotics-as-immunostimulant-evidences-from-trials-on-terrestrial-and-aquatic-animals
#17
REVIEW
Asad Nawaz, Allah Bakhsh Javaid, Sana Irshad, Seyed Hossein Hoseinifar, Hanguo Xiong
The gut immune system is, the main option for maintaining host's health, affected by numerous factors comprising dietary constituents and commensal bacteria. These dietary components that affect the intestinal immunity and considered as an alternative of antibiotics are called immunosaccharides. Fructooligosaccharide (FOS), Galactooligosaccharide (GOS), inulin, dietary carbohydrates, and xylooligosaccharide (XOS) are among the most studied prebiotics in human as well as in aquaculture. Although prebiotics and probiotics have revealed potential as treatment for numerous illnesses in both human and fish, a comprehensive understanding of the molecular mechanism behind direct and indirect effect on the intestinal immune response will help more and perhaps extra effective therapy intended for ailments...
May 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29505094/phenotypic-and-functional-heterogeneity-of-human-intermediate-monocytes-based-on-hla-dr-expression
#18
Eanna P Connaughton, Serika Naicker, Shirley A Hanley, Stephanie M Slevin, John K Eykelenboom, Noel F Lowndes, Timothy O'Brien, Rhodri Ceredig, Matthew D Griffin, Michael C Dennedy
Human blood monocytes are subclassified as classical, intermediate and nonclassical. In this study, it was shown that conventionally defined human intermediate monocytes can be divided into two distinct subpopulations with mid- and high-level surface expression of HLA-DR (referred to as DRmid and DRhi intermediate monocytes). These IM subpopulations were phenotypically and functionally characterized in healthy adult blood by flow cytometry, migration assays and lipoprotein uptake assays. Their absolute numbers and proportions were then compared in blood samples from obese and nonobese adults...
March 5, 2018: Immunology and Cell Biology
https://www.readbyqxmd.com/read/29489031/blood-tolerogenic-monocytes-and-low-proportions-of-dendritic-cell-subpopulations-are-hallmarks-of-human-tuberculosis
#19
Violette Dirix, Véronique Corbière, Chloé Wyndham-Thomas, Elodie Selis, Sabine Allard, Maya Hites, Laetitia Aerts, Thomas Giese, Françoise Mascart
BACKGROUND: The immune mechanisms underlying the pathogenesis of tuberculosis (TB) need better understanding to improve TB management, as the disease still causes more than 1.5 million deaths annually. This study tested the hypothesis that a modulation of the proportions or activation status of APC during Mycobacterium tuberculosis infection may impact on the course of the disease. PROCEDURE: Proportions of circulating APC subsets and the expression of stimulatory (CD86), inhibitory (ILT-3, ILT-4, ILT-7), or apoptosis-inducing (PDL-1, PDL-2) molecules were analyzed in 2 independent cohorts, on blood monocytes and dendritic cell (DC) subsets from patients with active or latent TB infection (aTB /LTBI) and from uninfected subjects...
May 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29475558/fetal-monocytes-and-the-origins-of-tissue-resident-macrophages
#20
Guillaume Hoeffel, Florent Ginhoux
Tissue-resident macrophages have pivotal functions for tissue defense and homeostasis. Two main discoveries have changed our current understanding of macrophage development: Their embryonic origin and their ability to self-renew throughout the lifespan. It is now well accepted that most tissue-resident macrophages are long-lived cells derived from a transient hematopoietic wave of erythro-myeloid progenitors (EMPs) emerging in the yolk sac. At least two distinct pathways derived from EMPs have been implicated in macrophage development...
January 12, 2018: Cellular Immunology
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