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Leukocyte poor

Holger Winkels, Erik Ehinger, Melanie Vassallo, Konrad Buscher, Huy Dinh, Kouji Kobiyama, Anouk Hamers, Clément Cochain, Ehsan Vafadarnejad, Antoine-Emmanuel Saliba, Alma Zernecke, Akula Pramod, Amlan Ghosh, Nathaly Anto Michel, Natalie Hoppe, Ingo Hilgendorf, Andreas Zirlik, Catherine Hedrick, Klaus Ley, Dennis Wolf
<u>Rationale:</u> Atherosclerosis is a chronic inflammatory disease that is driven by the interplay of pro- and anti-inflammatory leukocytes in the aorta. Yet, the phenotypic and transcriptional diversity of aortic leukocytes is only poorly understood. <u>Objective:</u> We characterized leukocytes from healthy and atherosclerotic mouse aortas in-depth by single cell RNA-sequencing (scRNAseq) and mass cytometry (CyTOF) to define an atlas of the immune cell landscape in atherosclerosis...
March 15, 2018: Circulation Research
Salvatore Sutti, Frank Tacke
Drug-induced liver injury (DILI) remains a clinical challenge due to the poorly predictable outcomes. Accordingly, considerable efforts have been devoted to unravel the risk factors responsible for DILI worsening toward acute liver failure (ALF), liver transplantation (LT), and/or death. From a pathogenic point of view, exhaustion of drug metabolizing pathways, cell death mechanisms, activation of local immune cells, such as Kupffer cells, and recruitment of inflammatory leukocytes including monocytes and lymphocytes are key drivers of DILI progression...
March 15, 2018: Clinical Science (1979-)
Jahnavi Aluri, Maya Gupta, Aparna Dalvi, Snehal Mhatre, Manasi Kulkarni, Gouri Hule, Mukesh Desai, Nitin Shah, Prasad Taur, Ramprasad Vedam, Manisha Madkaikar
Major histocompatibility complex (MHC) class II deficiency is a rare autosomal recessive form of primary immunodeficiency disorder (PID) characterized by the deficiency of MHC class II molecules. This deficiency affects the cellular and humoral immune response by impairing the development of CD4+ T helper (Th) cells and Th cell-dependent antibody production by B cells. Affected children typically present with severe respiratory and gastrointestinal tract infections. Hematopoietic stem cell transplantation (HSCT) is the only curative therapy available for treating these patients...
2018: Frontiers in Immunology
Angelo A Manfredi, Giuseppe A Ramirez, Patrizia Rovere-Querini, Norma Maugeri
Neutrophils recognize particulate substrates of microbial or endogenous origin and react by sequestering the cargo via phagocytosis or by releasing neutrophil extracellular traps (NETs) outside the cell, thus modifying and alerting the environment and bystander leukocytes. The signals that determine the choice between phagocytosis and the generation of NETs are still poorly characterized. Neutrophils that had phagocytosed bulky particulate substrates, such as apoptotic cells and activated platelets, appear to be "poised" in an unresponsive state...
2018: Frontiers in Immunology
Gang Chen, Ming Yan, Rong Rong Li, Wan Tao Chen
OBJECTIVE: To investigate the Sonic Hedgehog (SHH) signalling molecules and activated leukocyte cell adhesion molecule (ALCAM) expression in the mechanisms regulating invasion and metastasis in oral squamous cell carcinoma (OSCC). METHODS: The expressions of SHH signalling molecules Gli family zinc finger 1/2 (Gli1/Gli2), as well as ALCAM expression, was analysed in 101 OSCC patients by immunohistochemistry. The potential relationship between Gli1/Gli2 and ALCAM in regard to invasion and metastasis were studied by western blot, invasion and wound-healing assays...
2018: Chinese Journal of Dental Research
Susana Beceiro, Attila Pap, Zsolt Czimmerer, Tamer Sallam, Jose A Guillén, Germán Gallardo, Cynthia Hong, Noelia A-Gonzalez, Carlos Tabraue, Mercedes Diaz, Felix Lopez, Jonathan Matalonga, Annabel F Valledor, Pilar Dominguez, Carlos Ardavin, Cristina Delgado-Martin, Santiago Partida-Sanchez, Jose Luis Rodriguez-Fernandez, Laszlo Nagy, Peter Tontonoz, Antonio Castrillo
The liver X receptors (LXRs) are ligand-activated nuclear receptors with established roles in the maintenance of lipid homeostasis in multiple tissues. LXRs exert additional biological functions as negative regulators of inflammation, particularly in macrophages. However, the transcriptional responses controlled by LXRs in other myeloid cells, such as dendritic cells (DC), are still poorly understood. Here we used gain- and loss-of-function models to characterize the impact of LXR deficiency on DC activation programs...
March 5, 2018: Molecular and Cellular Biology
Yoshinobu Saitoh, Takao Setoguchi, Takako Yoshioka, Junichiro Nishi, Akihide Tanimoto, Setsuro Komiya
OBJECTIVE: The aim of this study was to evaluate whether intraoperative histopathological examination could predict the risk of relapse of infection in periprosthetic joint infections (PJI). METHODS: The study included 25 patients (14 women and 11 men, with a mean age of 67.0 years (range, 37-83 years)), who had two-staged revision surgery for a PJI. Following prosthetic removal in the first stage, all patient underwent an intraoperative histopathological examination during the second stage...
March 1, 2018: Acta Orthopaedica et Traumatologica Turcica
Nardhy Gomez-Lopez, Roberto Romero, Yi Xu, Derek Miller, Yaozhu Leng, Bogdan Panaitescu, Pablo Silva, Jonathan Faro, Ali Alhousseini, Navleen Gill, Sonia S Hassan, Chaur-Dong Hsu
PROBLEM: The immune cellular composition of amniotic fluid is poorly understood. Herein, we determined: 1) the immunophenotype of amniotic fluid immune cells during the second and third trimester in the absence of intra-amniotic infection/inflammation; 2) whether amniotic fluid T cells and ILCs display different phenotypical characteristics to that of peripheral cells; and 3) whether the amniotic fluid immune cells are altered in women with intra-amniotic infection/inflammation. METHOD OF STUDY: Amniotic fluid samples (n = 57) were collected from 15 to 40 weeks of gestation in women without intra-amniotic infection/inflammation...
March 3, 2018: American Journal of Reproductive Immunology: AJRI
Benedikt Höing, Oliver Kanaan, Petra Altenhoff, Robert Petri, Kruthika Thangavelu, Anke Schlüter, Stephan Lang, Agnes Bankfalvi, Sven Brandau
In solid tumors the biology and clinical course are strongly influenced by the interaction of tumor cells and infiltrating stromal host cells. The aim of this study was to assess the relative importance of stromal vs. tumoral inflammation for metastasis and survival in patients with laryngeal squamous cell carcinoma (LSCC). In 110 patients with tissues from histologically proven LSCC the expression of CD45, CD11b, CD3, MMP-9 and COX-2 was semiquantitatively analyzed in stromal regions and tumor nests. CD45, CD11b, CD3 and MMP-9 positive cells were more abundant in stroma whereas COX-2 was predominantly expressed in epithelial tumor nests...
February 2, 2018: Oncotarget
Mazhar Hussain, Muhammad Zafar Majeed Babar, Lubna Akhtar, Muhammad Shahbaz Hussain
Background and Objective: Increased neutrophil lymphocyte ratio (NLR) is a marker as well as predictor of various cardiac and non cardiac disorders. Our aim was to assess the relationship between NLR and different level of glycemic control in type 2 diabetic patients. Methods: An observational study was conducted at diabetic clinic of Sheikh Zayed Medical College/Hospital, Rahim Yar Khan from September 2016 to February 2017 in which 330 type 2 diabetic patients were randomly divided in to three groups based upon diabetes control according to ADA criteria...
November 2017: Pakistan Journal of Medical Sciences Quarterly
Ayako Kamiunten, Kotaro Shide, Takuro Kameda, Masaaki Sekine, Yoko Kubuki, Masafumi Ito, Takanori Toyama, Noriaki Kawano, Kousuke Marutsuka, Kouichi Maeda, Masanori Takeuchi, Hiroshi Kawano, Seiichi Sato, Junzo Ishizaki, Keiichi Akizuki, Yuki Tahira, Haruko Shimoda, Tomonori Hidaka, Kiyoshi Yamashita, Hitoshi Matsuoka, Kazuya Shimoda
Polycythemia vera (PV) and essential thrombocythemia (ET) are associated with life-threatening thrombohemorrhagic events, and disease progression and development of non-hematological malignancies also reduce long-term survival. We retrospectively surveyed thrombohemorrhagic events and overall survival (OS) in 62 PV and 117 ET patients. The cumulative incidences of thrombohemorrhagic events in PV and ET patients were 11.3 and 10.3%, and the incidence rates were 2.42 and 1.85 per 100 person-years. The combined incidence rates of disease progression and development of non-hematological malignancies in PV and ET patients were 1...
February 27, 2018: International Journal of Hematology
Xunlei Kang, Changhao Cui, Chen Wang, Guojin Wu, Heyu Chen, Zhigang Lu, Xiaoli Chen, Li Wang, Jie Huang, Huimin Geng, Meng Zhao, Zhengshan Chen, Markus Müschen, Huan-You Wang, Cheng Cheng Zhang
BACKGROUND: We recently identified the human leukocyte immunoglobulin-like receptor B2 (LILRB2) and its mouse ortholog-paired Ig-like receptor (PirB) as receptors for several angiopoietin-like proteins (Angptls). We also demonstrated that PirB is important for the development of acute myeloid leukemia (AML), but exactly how an inhibitory receptor such as PirB can support cancer development is intriguing. RESULTS: Here, we showed that the activation of Ca (2+)/calmodulin-dependent protein kinases (CAMKs) is coupled with PirB signaling in AML cells...
February 27, 2018: Journal of Hematology & Oncology
Hans Jørgen Timm Guthe, Torbjørn Nedrebø, Jan Kristian Damås, Helge Wiig, Ansgar Berg
BACKGROUND: Therapeutic hypothermia is neuroprotective in asphyxiated neonates by counteracting mechanisms contributing to brain injury. Although an initial increased permeability is part of an inflammatory reaction and thereby a natural healing process, an excessive endothelial permeability with edema formation may result in impaired hemodynamics. Reduced permeability may, however, benefit healing. Although plasma and interstitial colloid osmotic pressure are accessible and essential parameters for understanding fluid imbalance, the mechanisms of fluid exchange remain poorly understood...
February 23, 2018: BMC Pediatrics
Stefan O Ciurea, Myriam Labopin, Gerard Socie, Liisa Volin, Jakob Passweg, Patrice Chevallier, Dietrich Beelen, Noel Milpied, Didier Blaise, Jan J Cornelissen, Nathalie Fegueux, Emmanuelle Polge, Piyanuch Kongtim, Gabriela Rondon, Jordi Esteve, Mohamad Mohty, Bipin N Savani, Richard E Champlin, Arnon Nagler
BACKGROUND: Despite recent advances in allogeneic hematopoietic stem cell transplantation (AHSCT), the outcome of patients who have acute myeloid leukemia (AML) with a complex karyotype (CK) remains poor. The objective of this study was to identify prognostic factors associated with post-transplantation survival in a large cohort of patients with CK AML. METHODS: In total, data on 1342 consecutively patients who underwent transplantation for CK (≥3 chromosomal abnormalities) AML were provided by the Acute Leukemia Working Party of the European Society for Blood and Marrow Transplantation and from the University of Texas MD Anderson Cancer Center database were included in the analysis...
February 22, 2018: Cancer
Juan C Mira, Dina C Nacionales, Tyler J Loftus, Ricardo Ungaro, Brittany Mathias, Alicia M Mohr, Lyle L Moldawer, Philip A Efron
Severe injury and shock remain major sources of morbidity and mortality worldwide. Immunologic dysregulation following trauma contributes to these poor outcomes. Few, if any, therapeutic interventions have benefited these patients, and this is due to our limited understanding of the host response to injury and shock. The Food and Drug Administration requires preclinical animal studies prior to any interventional trials in humans; thus, animal models of injury and shock will remain the mainstay for trauma research...
2018: Methods in Molecular Biology
Sören Verstraete, Ilse Vanhorebeek, Esther van Puffelen, Inge Derese, Catherine Ingels, Sascha C Verbruggen, Pieter J Wouters, Koen F Joosten, Jan Hanot, Gonzalo G Guerra, Dirk Vlasselaers, Jue Lin, Greet Van den Berghe
BACKGROUND: Children who have suffered from critical illnesses that required treatment in a paediatric intensive care unit (PICU) have long-term physical and neurodevelopmental impairments. The mechanisms underlying this legacy remain largely unknown. In patients suffering from chronic diseases hallmarked by inflammation and oxidative stress, poor long-term outcome has been associated with shorter telomeres. Shortened telomeres have also been reported to result from excessive food consumption and/or unhealthy nutrition...
February 21, 2018: Critical Care: the Official Journal of the Critical Care Forum
Houliang Deng, Jianming Zeng, Ting Zhang, Longcai Gong, Hongjie Zhang, Edwin Cheung, Chris Jones, Gang Li
Lysine to Methionine mutations at position 27 (K27M) in the histone H3 (H3.3 and H3.1) are highly prevalent in pediatric high-grade gliomas (HGG) that arise in the midline of the central nervous system. H3K27M perturbs the activity of polycomb repressor complex 2 (PRC2) and correlates with DNA hypomethylation; however, the pathways whereby H3K27M drive the development of pediatric HGG remain poorly understood. To understand the mechanism of pediatric HGG development driven by H3.3K27M and discover potential therapeutic targets or biomarkers, we established pediatric glioma cell model systems harboring H3...
February 16, 2018: Molecular Cancer Research: MCR
Elena Y Senchenkova, Janice Russell, Shantel A Vital, Alper Yildirim, A Wayne Orr, D Neil Granger, Felicity N E Gavins
Angiotensin II (Ang-II)-induced hypertension is associated with accelerated thrombus formation in arterioles and leukocyte recruitment in venules. The mechanisms that underlie the prothrombotic and proinflammatory responses to chronic Ang-II administration remain poorly understood. We evaluated the role of CD40/CD40 ligand (CD40L) signaling in Ang-II-mediated microvascular responses and assessed whether and how soluble CD40L (sCD40L) contributes to this response. Intravital video microscopy was performed to analyze leukocyte recruitment and dihydrorhodamine-123 oxidation in postcapillary venules...
February 8, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Manisha Agarwal, Sameer Bakhshi, Sadanand N Dwivedi, Madhulika Kabra, Rashmi Shukla, Rachna Seth
BACKGROUND: Cyclin dependent kinase inhibitor 2A/B (CDKN2A/B) genes are implicated in many malignancies including acute lymphoblastic leukemia (ALL). These tumor suppressor genes, with a key regulatory role in cell cycle are located on chromosome 9p21.3. Previous studies involving CDKN2A/B gene deletions have shown mixed associations with survival outcome in childhood ALL. PROCEDURE: Hundred and four newly diagnosed children with ALL (1-14 years) were enrolled in this study...
February 15, 2018: Pediatric Blood & Cancer
Danyi Xu, Guanhua Xu, Jin Lin
We report a case of leukemic arthritis (LA) of monocytic differentiation, which presented with spondyloarthritis-like symptoms and a positive human leukocyte antigen-B27, and discuss its potential mechanisms.The patient was admitted because of pain in her right knee and lower back for 18 months. Magnetic resonance imaging showed diffuse hyperintense signal in the bilateral liac bones and bone marrow edema and synovitis in the right knee.The diagnosis of acute monocytic leukemia and LA were concluded by bone marrow aspiration and flow cytometry of the synovial fluid...
February 2018: Medicine (Baltimore)
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