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https://www.readbyqxmd.com/read/28635624/effects-of-type-1-diabetes-risk-alleles-on-immune-cell-gene-expression
#1
REVIEW
Ramesh Ram, Grant Morahan
Genetic studies have identified 61 variants associated with the risk of developing Type 1 Diabetes (T1D). The functions of most of the non-HLA (Human Leukocyte Antigen) genetic variants remain unknown. We found that only 16 of these risk variants could potentially be linked to a protein-coding change. Therefore, we investigated whether these variants affected susceptibility by regulating changes in gene expression. To do so, we examined whole transcriptome profiles of 600 samples from the Type 1 Diabetes Genetics Consortium (T1DGC)...
June 21, 2017: Genes
https://www.readbyqxmd.com/read/28633072/roles-of-serum-in-innate-immune-responses-of-human-leukocytes-to-synthetic-lipopeptide
#2
Terukazu Sanui, Masaaki Takeshita, Takao Fukuda, Urara Tanaka, Rehab Alshargabi, Yoshitomi Aida, Fusanori Nishimura
Tripalmitoyl-S-glyceryl-l-Cys-Ser-(Lys)4 (Pam3CSK4) is a highly conserved molecular motif found in various classes of lipoproteins. The requirement for leukocyte to respond to synthetic Pam3CSK4 were studied. Pam3CSK4 primed neutrophils for a respiratory burst in a serum-dependent manner. Pam3CSK4 upregulated CD11b, CD14, and cytochrome b558, and downregulated Leu-8. Treatment of neutrophils with anti-CD14 antibodies and treatment of serum with anti-LPS binding protein (LBP) antibodies resulted in the inhibition of priming for respiratory burst by Pam3CSK4...
June 17, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28632732/fructo-oligosaccharides-and-intestinal-barrier-function-in-a-methionine-choline-deficient-mouse-model-of-nonalcoholic-steatohepatitis
#3
Kotaro Matsumoto, Mayuko Ichimura, Koichi Tsuneyama, Yuki Moritoki, Hiromichi Tsunashima, Katsuhisa Omagari, Masumi Hara, Ichiro Yasuda, Hiroshi Miyakawa, Kentaro Kikuchi
Impairments in intestinal barrier function, epithelial mucins, and tight junction proteins have been reported to be associated with nonalcoholic steatohepatitis. Prebiotic fructo-oligosaccharides restore balance in the gastrointestinal microbiome. This study was conducted to determine the effects of dietary fructo-oligosaccharides on intestinal barrier function and steatohepatitis in methionine-choline-deficient mice. Three groups of 12-week-old male C57BL/6J mice were studied for 3 weeks; specifically, mice were fed a methionine-choline-deficient diet, a methionine-choline-deficient diet plus 5% fructo-oligosaccharides in water, or a normal control diet...
2017: PloS One
https://www.readbyqxmd.com/read/28626364/ex-vivo-generation-of-genetically-modified-macrophages-from-human-induced-pluripotent-stem-cells
#4
Mania Ackermann, Alexandra Kuhn, Jessica Kunkiel, Sylvia Merkert, Ulrich Martin, Thomas Moritz, Nico Lachmann
BACKGROUND: Pluripotent stem cells, including induced pluripotent stem cells (iPSCs), have the capacity to differentiate towards all three germ layers and have been highlighted as an attractive cell source for the field of regenerative medicine. Thus, stable expression of therapeutic transgenes in iPSCs, as well as thereof derived progeny of hematopoietic lineage, may lay the foundation for innovative cell replacement therapies. METHODS: We have utilized human iPSC lines genetically modified by lentiviral vector technology or targeted integration of reporter genes to evaluate transgene expression during hematopoietic specification and differentiation towards macrophages...
June 2017: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/28625325/importance-of-cd117-in-the-assignation-of-a-myeloid-lineage-in-acute-leukemias
#5
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/28622534/increased-expression-of-toll-like-receptors-2-and-9-is-associated-with-reduced-dna-methylation-in-spontaneous-preterm-labor
#6
Scott W Walsh, Anuja A Chumble, Sonya L Washington, Kellie J Archer, Sinem E Sahingur, Jerome F Strauss
The cause of spontaneous preterm labor (sPTL) is not known, but it could be due to epigenetic alterations that increase the sensitivity of decidual tissue to inflammatory stimuli. We collected decidual tissue from women at term not in labor (TNL), women at term in labor (TL), and women with sPTL. Illumina Infinium HumanMethylation450 BeadChip analysis revealed significantly reduced DNA methylation for TLR-2 and TLR-9 in sPTL as compared to TL. Immunohistochemical staining documented significantly increased expression of TLR-2 and TLR-9 in decidual tissue of women with sPTL as compared to TL or TNL...
June 3, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28622332/comparison-of-monocyte-gene-expression-among-patients-with-neurocysticercosis-associated-epilepsy-idiopathic-epilepsy-and-idiopathic-headaches-in-india
#7
Vasudevan Prabhakaran, Douglas A Drevets, Govindan Ramajayam, Josephine J Manoj, Michael P Anderson, Jay S Hanas, Vedantam Rajshekhar, Anna Oommen, Hélène Carabin
BACKGROUND: Neurocysticercosis (NCC), a neglected tropical disease, inflicts substantial health and economic costs on people living in endemic areas such as India. Nevertheless, accurate diagnosis using brain imaging remains poorly accessible and too costly in endemic countries. The goal of this study was to test if blood monocyte gene expression could distinguish patients with NCC-associated epilepsy, from NCC-negative imaging lesion-free patients presenting with idiopathic epilepsy or idiopathic headaches...
June 16, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28620611/dogs-with-acute-myeloid-leukemia-have-clonal-rearrangements-in-t-and-b-cell-receptors
#8
Tracy Stokol, Gabrielle A Nickerson, Martha Shuman, Nicole Belcher
Clonality testing for rearrangements in the complementarity-determining region 3 of the immunoglobulin heavy chain of B lymphocytes (B cell receptor) and the T cell receptor of T lymphocytes helps distinguish between clonal and non-clonal expansions of lymphocytes. There are rare reports of clonally rearranged T and B cell receptors in dogs with acute myeloid leukemia (AML). Our objective was to determine the frequency of clonally rearranged T and B cell receptors in dogs with AML. Archived slides from historical cases of AML (from January 2010 to June 2013) and slides or liquid specimens [blood, bone marrow (BM), body cavity fluid, or tissue aspirates] from cases of AML diagnosed between June 2013 and February 2017 were used in the study...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28620383/ly6c-hi-monocytes-and-their-macrophage-descendants-regulate-neutrophil-function-and-clearance-in-acetaminophen-induced-liver-injury
#9
Nadine Graubardt, Milena Vugman, Odelia Mouhadeb, Gabriele Caliari, Metsada Pasmanik-Chor, Debby Reuveni, Ehud Zigmond, Eli Brazowski, Eyal David, Lousie Chappell-Maor, Steffen Jung, Chen Varol
Monocyte-derived macrophages (MoMF) play a pivotal role in the resolution of acetaminophen-induced liver injury (AILI). Timely termination of neutrophil activity and their clearance are essential for liver regeneration following injury. Here, we show that infiltrating Ly6C(hi) monocytes, their macrophage descendants, and neutrophils spatially and temporally overlap in the centrilobular necrotic areas during the necroinflammatory and resolution phases of AILI. At the necroinflammatory phase, inducible ablation of circulating Ly6C(hi) monocytes resulted in reduced numbers and fractions of reactive oxygen species (ROS)-producing neutrophils...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28619539/systemic-immunological-changes-in-patients-with-distinct-clinical-outcomes-during-mycobacterium-tuberculosis-infection
#10
Tatiane Figueiredo Morais-Papini, Jordana Grazziela Alves Coelho-Dos-Reis, Ana Paula Barbosa Wendling, Lis Ribeiro do Vale Antonelli, Pryscilla Fanini Wowk, Vânia Luiza Deperon Bonato, Valéria Maria Augusto, Silvana Elói-Santos, Olindo Assis Martins-Filho, Cláudia Martins Carneiro, Andréa Teixeira-Carvalho
BACKGROUND: The lung lesions in an individual infected with tuberculosis (TB) are surprisingly variable and independent of each other. However, there is no circulating biomarker yet able to segregate patients according to the extent of lung lesions. MATERIALS AND METHODS: In this study, the phenotypic and functional profile of leukocytes of patients with active pulmonary tuberculosis (TB) and controls (CO) were fully scrutinized by immunophenotyping assays and in vitro short-term whole blood culture...
May 26, 2017: Immunobiology
https://www.readbyqxmd.com/read/28619088/chemokine-signals-are-crucial-for-enhanced-homing-and-differentiation-of-circulating-osteoclast-progenitor-cells
#11
Alan Sucur, Zrinka Jajic, Marinko Artukovic, Marina Ikic Matijasevic, Branimir Anic, Darja Flegar, Antonio Markotic, Tomislav Kelava, Sanja Ivcevic, Natasa Kovacic, Vedran Katavic, Danka Grcevic
BACKGROUND: The peripheral blood (PB) monocyte pool contains osteoclast progenitors (OCPs), which contribute to osteoresorption in inflammatory arthritides and are influenced by the cytokine and chemokine milieu. We aimed to define the importance of chemokine signals for migration and activation of OCPs in rheumatoid arthritis (RA) and psoriatic arthritis (PsA). METHODS: PB and, when applicable, synovial fluid (SF) samples were collected from 129 patients with RA, 53 patients with PsA, and 110 control patients in parallel to clinical parameters of disease activity, autoantibody levels, and applied therapy...
June 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28615124/blood-and-milk-polymorphonuclear-leukocyte-and-monocyte-macrophage-functions-in-naturally-caprine-arthritis-encephalitis-virus-infection-in-dairy-goats
#12
Bruna Parapinski Santos, Fernando Nogueira Souza, Maiara Garcia Blagitz, Camila Freitas Batista, Heloísa Godoi Bertagnon, Soraia Araújo Diniz, Marcos Xavier Silva, João Paulo Amaral Haddad, Alice Maria Melville Paiva Della Libera
The exact influence of caprine arthritis encephalitis virus (CAEV) infection on blood and milk polymorphonuclear leukocytes (PMNLs) and monocyte/macrophages of goats remains unclear. Thus, the present study sought to explore the blood and milk PMNL and monocyte/macrophage functions in naturally CAEV-infected goats. The present study used 18 healthy Saanen goats that were segregated according to sera test outcomes into serologically CAEV negative (n=8; 14 halves) and positive (n=10; 14 halves) groups. All milk samples from mammary halves with milk bacteriologically positive outcomes, somatic cell count ≥2×10(6)cellsmL(-1), and abnormal secretions in the strip cup test were excluded...
June 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28612637/treatment-options-for-children-and-adolescents-with-inflammatory-bowel-disease-is-granulomonocytapheresis-an-effective-alternative-to-drug-therapy
#13
Tomotaka Tanaka, Takayuki Yamamoto, Koji Sawada, Rodolfo Sacco
Patients with inflammatory bowel diseases (IBD) require life-long medications, which even if effective have the potential to cause adverse effects as additional morbidity factors. In pediatric patients, drug therapy has more serious limitations, including impaired physical and mental development. A non-drug therapeutic option is believed to be depletion of elevated and activated granulocytes and monocytes known to release inflammatory cytokines, like the CD14+CD16+ monocyte phenotype known to release tumor necrosis factor-α...
June 14, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28611261/non-neoplastic-portal-vein-thrombosis-in-hcv-cirrhosis-patients-is-it-an-immuno-inflammatory-disorder
#14
Mona Abu El-Makarem, Atef El-Akad, Moustafa Elian, Tahra Sherif, Ragaa El-Shaheed, Aliaa Abd El Fatah, Douaa Sayed, Rania Bakry, Aisha Mahmoud
BACKGROUND AND AIMS: Portal vein thrombosis (PVT) is a critical complication in cirrhotic patients. We explored the role of the activated factor VII-antithrombin (FVIIa-AT) complex and enhanced monocytic tissue factor (TF) expression in the development and prediction of non-neoplastic PVT in cirrhotic patients. MATERIAL AND METHODS: A total of 30 HCV-cirrhosis patients were included in our study. They were compared to 35 cirrhotic patients without PVT, 15 non-cirrhotic patients with PVT, and 15 healthy controls...
August 1, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/28609832/pembrolizumab-induced-thyroiditis-comprehensive-clinical-review-and-insights-into-underlying-involved-mechanisms
#15
Danae A Delivanis, Michael P Gustafson, Svetlana Bornschlegl, Michele M Merten, Lisa Kottschade, Sarah Withers, Allan B Dietz, Mabel Ryder
Context: Thyroid immune-related adverse events (irAEs) in patients treated with programmed death receptor-1 (PD-1) blockade are increasingly recognized as one of the most common adverse effects. Our aim was to determine the incidence and examine the potential mechanisms of anti-PD-1 induced thyroid irAEs. Design: Single center, retrospective cohort study. Patients and Measurements: We studied 93 patients with advanced cancer (aged 24–82 years; 60% males) who received at least one infusion of pembrolizumab...
May 9, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28596474/lenalidomide-increases-human-dendritic-cell-maturation-in-multiple-myeloma-patients-targeting-monocyte-differentiation-and-modulating-mesenchymal-stromal-cell-inhibitory-properties
#16
Federica Costa, Rosanna Vescovini, Marina Bolzoni, Valentina Marchica, Paola Storti, Denise Toscani, Fabrizio Accardi, Laura Notarfranchi, Benedetta Dalla Palma, Cristina Manferdini, Sabrina Manni, Giannalisa Todaro, Gina Lisignoli, Francesco Piazza, Franco Aversa, Nicola Giuliani
The use of Lenalidomide (LEN), to reverse tumor-mediated immune suppression and amplify multiple myeloma-specific immunity is currently being explored. Particularly, LEN effects on dendritic cells (DCs) are still unclear. In this study, we investigated the potential effect of LEN on DC differentiation and activity. DCs were differentiated either from CD14+ cells obtained from patients with multiple myeloma or from a human monocytic cell line.LEN, at the concentration range reached in vivo, significantly increased the median intensity expression of HLA-DR, CD86 and CD209 by DCs derived from both bone marrow and peripheral myeloma monocytes and enhanced the production of Interleukin-8, C-C motif chemokine ligand (CCL) 2, CCL5 and tumor necrosis factor-α...
May 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28596372/human-blood-monocyte-subsets-a-new-gating-strategy-defined-using-cell-surface-markers-identified-by-mass-cytometry
#17
Graham D Thomas, Anouk A J Hamers, Catherine Nakao, Paola Marcovecchio, Angela M Taylor, Chantel McSkimming, Anh Tram Nguyen, Coleen A McNamara, Catherine C Hedrick
OBJECTIVE: Human monocyte subsets are defined as classical (CD14(++)CD16(-)), intermediate (CD14(++)CD16(+)), and nonclassical (CD14(+)CD16(+)). Alterations in monocyte subset frequencies are associated with clinical outcomes, including cardiovascular disease, in which circulating intermediate monocytes independently predict cardiovascular events. However, delineating mechanisms of monocyte function is hampered by inconsistent results among studies. APPROACH AND RESULTS: We use cytometry by time-of-flight mass cytometry to profile human monocytes using a panel of 36 cell surface markers...
June 8, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28594751/dhrs9-is-a-stable-marker-of-human-regulatory-macrophages
#18
Paloma Riquelme, Giada Amodio, Camila Macedo, Aurelie Moreau, Nataša Obermajer, Christoph Brochhausen, Norbert Ahrens, Tuija Kekarainen, Fred Fändrich, Cristina Cuturi, Silvia Gregori, Diana Metes, Hans J Schlitt, Angus W Thomson, Edward K Geissler, James A Hutchinson
BACKGROUND: The human regulatory macrophage (Mreg) has emerged as a promising cell type for use as a cell-based adjunct immunosuppressive therapy in solid organ transplant recipients. In this brief report, dehydrogenase/reductase 9 (DHRS9) is identified as a robust marker of human Mregs. MATERIALS AND METHODS: The cognate antigen of a mouse monoclonal antibody raised against human Mregs was identified as DHRS9 by immunoprecipitation and MALDI-MS sequencing. Expression of DHRS9 within a panel of monocyte-derived macrophages was investigated by quantitative PCR, immunoblotting and flow cytometry...
June 7, 2017: Transplantation
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
#19
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/28592841/lipopolysaccharides-induced-inflammatory-responses-and-electrophysiological-dysfunctions-in-human-induced-pluripotent-stem-cell-derived-cardiomyocytes
#20
Gökhan Yücel, Zhihan Zhao, Ibrahim El-Battrawy, Huan Lan, Siegfried Lang, Xin Li, Fanis Buljubasic, Wolfram-Hubertus Zimmermann, Lukas Cyganek, Jochen Utikal, Ursula Ravens, Thomas Wieland, Martin Borggrefe, Xiao-Bo Zhou, Ibrahim Akin
Severe infections like sepsis lead frequently to cardiomyopathy. The mechanisms are unclear and an optimal therapy for septic cardiomyopathy still lacks. The aim of this study is to establish an endotoxin-induced inflammatory model using human induced pluripotent stem cell (hiPSC) derived cardiomyocytes (hiPSC-CMs) for mechanistic and therapeutic studies. hiPSC-CMs were treated by lipopolysaccharide (LPS) in different concentrations for different times. ELISA, FACS, qPCR, and patch-clamp techniques were used for the study...
June 7, 2017: Scientific Reports
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