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https://www.readbyqxmd.com/read/28638921/-protective-effect-of-synthetic-salidroside-on-acute-lung-injury-in-rats
#1
Qian Huang, Yan-Chun Cai, Xiao-Li Wei, Jin-Long Wu, Ru-Huan Mei, Xiao-Lan Hu
To study the protective effect and mechanism of synthetic salidroside on acute lung injury (ALI) induced by lipopolysaccharide (LPS), male Sprague-Dawley (SD) rats were randomly divided into saline control group, 3 mg/kg LPS model group, different doses of salidroside groups (5, 20 and 80 mg/kg), and 5 mg/kg dexamethasone group. Intratracheal LPS instillation was used to establish the ALI model 0.5 h after intraperitoneal injection of salidroside or dexamethasone, and the rats were sacrificed 6 h later. Lung wet/dry weight ratio (W/D) was calculated...
June 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28627430/changes-in-eosinophil-count-during-bacterial-infection-revisiting-an-old-marker-to-assess-the-efficacy-of-antimicrobial-therapy
#2
B Davido, S Makhloufi, M Matt, R Calin, O Senard, C Perronne, A Dinh, J Salomon
INTRODUCTION: Eosinopenia as a criterion of sepsis has been the subject of debate for decades. Different authors have proposed different cut-off values. METHODS: A prospective study was conducted from February to August 2016. Hospitalized adults suffering from a bacterial infection with eosinopenia, defined as an eosinophil count <100/mm(3), were included. Patients were divided into two groups according to the first day of effective antimicrobial therapy. They were observed for 5days in order to evaluate whether recovery from eosinopenia was predictive of an appropriate antibiotic regimen...
June 13, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28615221/coronin-1a-a-novel-player-in-integrin-biology-controls-neutrophil-trafficking-in-innate-immunity
#3
Robert Pick, Daniela Begandt, Thomas J Stocker, Melanie Salvermoser, Sarah Thome, Ralph T Böttcher, Eloi Montanez, Ute Harrison, Ignasi Forné, Alexander G Khandoga, Raffaele Coletti, Ludwig T Weckbach, Doris Brechtefeld, Rainer Haas, Axel Imhof, Steffen Massberg, Markus Sperandio, Barbara Walzog
Trafficking of polymorphonuclear neutrophils (PMNs) during inflammation critically depends on the β2 integrins LFA-1 (CD11a/CD18) and Mac-1 (CD11b/CD18). Here, we identify Coronin 1A (Coro1A) as a novel regulator of β2 integrins that interacts with the cytoplasmic tail of CD18 and is crucial for induction of PMN adhesion and post-adhesion events, including adhesion strengthening, spreading, and migration under flow conditions. Transition of PMN rolling to firm adhesion critically depends on Coro1A by regulating the accumulation of high affinity LFA-1 in focal zones of adherent cells...
June 14, 2017: Blood
https://www.readbyqxmd.com/read/28614271/serum-anti-pla2r-antibody-and-glomerular-pla2r-deposition-in-chinese-patients-with-membranous-nephropathy-a-cross-sectional-study
#4
Lu Pang, Ai-Min Zhang, Hai-Xia Li, Jia-Lin Du, Li-Li Jiao, Nan Duan, Yi Liu, Dan Yu
M-type phospholipase A2 receptor (PLA2R) is the major target antigen in primary membranous nephropathy (PMN). Previous studies have evaluated the diagnostic value of serum anti-PLA2R antibody. However, the correlation of serum anti-PLA2R antibody and glomerular PLA2R deposition, and their association with clinical characteristics need to be further evaluated.A total of 136 patients were involved as inception group because serum anti-PLA2R antibody and glomerular PLA2R antigen were simultaneously measured. We examined serum anti-PLA2R antibody by ELISA and glomerular PLA2R deposition by immunofluorescence assay...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28611772/bovine-polymorphonuclear-neutrophils-cast-neutrophil-extracellular-traps-against-the-abortive-parasite-neospora-caninum
#5
Rodolfo Villagra-Blanco, Liliana M R Silva, Tamara Muñoz-Caro, Zhengtao Yang, Jianhua Li, Ulrich Gärtner, Anja Taubert, Xichen Zhang, Carlos Hermosilla
Neospora caninum represents a relevant apicomplexan parasite causing severe reproductive disorders in cattle worldwide. Neutrophil extracellular trap (NET) generation was recently described as an efficient defense mechanism of polymorphonuclear neutrophils (PMN) acting against different parasites. In vitro interactions of bovine PMN with N. caninum were analyzed at different ratios and time spans. Extracellular DNA staining was used to illustrate the typical molecules of NETs [i.e., histones (H3), neutrophil elastase (NE), myeloperoxidase (MPO), pentraxin] via antibody-based immunofluorescence analyses...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28608441/transfusion-related-acute-lung-injury-critical-neutrophil-activation-by-anti-hla-a2-antibodies-for-endothelial-permeability
#6
Kathy Khoy, Minh Vu Chuong Nguyen, Dominique Masson, Béatrice Bardy, Christian Drouet, Marie-Hélène Paclet
BACKGROUND: Transfusion-related acute lung injury (TRALI) is a major complication of hemotherapy that may occur after the transfusion of any blood type component. Several clinical reports have suggested the presence of anti-HLA antibodies in the blood product. This study sought to examine the role of anti-HLA-A2 antibodies in polymorphonuclear neutrophil (PMN) activation and thus in endothelial permeability. STUDY DESIGN AND METHODS: PMN activation was assessed by both nicotinamide adenine dinucleotide phosphate oxidase (NADPH oxidase) activity and reactive oxygen species (ROS) production...
June 13, 2017: Transfusion
https://www.readbyqxmd.com/read/28606316/protective-immune-responses-during-prepatency-in-goat-kids-experimentally-infected-with-eimeria-ninakohlyakimovae
#7
L Matos, M C Muñoz, J M Molina, F Rodríguez, D Perez, A Lopez, O Ferrer, C Hermosilla, A Taubert, A Ruiz
During the first schizogony, the goat coccidia Eimeria ninakohlyakimovae develops macroschizonts in lacteal duct endothelial cells, whose rupture leads to severe ileal damage and clinical signs during the prepatent period. The immune response elicited against early stages of the parasite development still requires to be investigated. In the present study we have evaluated immune reactions in goat kids primary- and challenged-infected with Eimeria ninakohlyakimovae, and sacrificed during prepatency (7days after challenge)...
August 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28600306/expression-of-lewis-a-glycans-on-polymorphonuclear-leukocytes-augments-function-by-increasing-transmigration
#8
Jennifer C Brazil, Ronen Sumagin, Sean R Stowell, Goo Lee, Nancy A Louis, Richard D Cummings, Charles A Parkos
PMN-expressed fucosylated glycans from the Lewis glycan family, including Lewis-x (Le(x)) and sialyl Lewis-x (sLe(x)), have previously been implicated in the regulation of important PMN functions, including selectin-mediated trafficking across vascular endothelium. Although glycans, such as Le(x) and sLe(x), which are based on the type 2 sequence (Galβ1-4GlcNAc-R), are abundant on PMNs, the presence of type 1 Galβ1-3GlcNAc-R glycans required for PMN expression of the closely related stereoisomer of Le(x), termed Lewis-A (Le(a)), has not, to our knowledge, been reported...
June 9, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28599020/isg15-in-host-defense-against-candida-albicans-infection-in-a-mouse-model-of-fungal-keratitis
#9
Chen Dong, Nan Gao, Bing X Ross, Fu-Shin X Yu
Purpose: ISG15, a di-ubiquitin-like protein, is critical for controlling certain viral and bacterial infections. We sought to determine if ISG15 plays a role in corneal innate immunity against Candida albicans (C. albicans) using a C57BL/6 (B6) mouse model of human fungal keratitis. Methods: Scarified corneas of adult B6 mice were pretreated with TLR5 ligand flagellin and then inoculated with C. albicans. The expression of ISG15 and other genes involved in ISG15 conjugation (ISGylation) was determined by real-time PCR...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28598757/exudates-absorption-and-proteases-trapping-in-venous-leg-ulcers
#10
P Humbert, C Courderot-Masuyer, S Robin, D Oster, R Pegahi
OBJECTIVE: In venous leg ulcer (VLU), the impaired healing has been shown to be associated with excessive levels of protease activities such as matrix metalloproteinases (MMPs) and elastases found in exudates. The present study focused on exudates absorption and proteases trapping capacity of a new generation of polyacrylate superabsorbent, Tegaderm superabsorber (TS), compared with a traditional dressing such as Zetuvit. METHOD: We studied the proteases implicated in VLU (MMP-1, MMP-2, MMP-9 and PMN elastase)...
June 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28597106/relative-ascites-polymorphonuclear-cell-count-indicates-bacterascites-and-risk-of-spontaneous-bacterial-peritonitis
#11
Philipp Lutz, Felix Goeser, Dominik J Kaczmarek, Stefan Schlabe, Hans Dieter Nischalke, Jacob Nattermann, Achim Hoerauf, Christian P Strassburg, Ulrich Spengler
BACKGROUND AND AIMS: Absolute polymorphonuclear (PMN) counts in ascites define spontaneous bacterial peritonitis (SBP), a severe form of bacterial infection in liver cirrhosis. Bacterascites, another form of ascites infection, can progress to SBP or may resolve spontaneously but is not reflected by absolute PMN counts. We investigated whether the relative ascites PMN count (the absolute PMN count divided by the absolute leukocyte count) provides additional information to detect bacterascites or predict SBP...
June 9, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28595750/the-tnf-%C3%AE-of-mast-cells-induces-pro-inflammatory-responses-during-infection-with-acinetobacter-baumannii
#12
Takane Kikuchi-Ueda, Go Kamoshida, Tsuneyuki Ubagai, Ryuichi Nakano, Akiyo Nakano, Teruo Akuta, Kenji Hikosaka, Shigeru Tansho-Nagakawa, Hirotoshi Kikuchi, Yasuo Ono
Mast cells serve important roles as sentinels against bacterial infection by secreting mediators stored in granules. Much of their effectiveness depends upon recruiting and/or modulating other immune cells. The location of mast cells implies that they recognize pathogens invading tissues or mucosal tissues. Acinetobacter baumannii is a gram-negative bacterium that is considered an emerging nosocomial pathogen and causes a wide range of infections associated with high morbidity and mortality. To date, the interaction of A...
May 30, 2017: Immunobiology
https://www.readbyqxmd.com/read/28595615/eph-ephrin-signaling-controls-progenitor-identities-in-the-ventral-spinal-cord
#13
Julien Laussu, Christophe Audouard, Anthony Kischel, Poincyane Assis-Nascimento, Nathalie Escalas, Daniel J Liebl, Cathy Soula, Alice Davy
BACKGROUND: In the vertebrate spinal cord, motor neurons (MN) are generated in stereotypical numbers from a pool of dedicated progenitors (pMN) whose number depends on signals that control their specification but also their proliferation and differentiation rates. Although the initial steps of pMN specification have been extensively studied, how pMN numbers are regulated over time is less well characterized. RESULTS: Here, we show that ephrinB2 and ephrinB3 are differentially expressed in progenitor domains in the ventral spinal cord with several Eph receptors more broadly expressed...
June 8, 2017: Neural Development
https://www.readbyqxmd.com/read/28591367/myocardial-ischemic-post-conditioning-protects-the-lung-against-myocardial-ischemia-reperfusion-induced-damage-by-activating-gsk-3%C3%AE
#14
Wenwei Gao, Bo Zhao, Lian Liu, Quan Yuan, Xiaojing Wu, Zhongyuan Xia
Purpose: To investigate whether modulating GSK-3β could attenuate myocardial ischemia reperfusion injury (MIRI) induced acute lung injury (ALI) and analyze the underlying mechanism. Methods: Male SD rats were subjected to MIRI with or without myocardial ischemic post-conditioning in the presence or absence of GSK-3β inhibitor. GSK-3β inhibitor was injected peritoneally 10min before MIRI. Lung W/D weight ratio, MPO, PMNs, histopathological changes, TUNEL, Bax, Bcl-2, IL-6, IL-8, IL-10, GSK-3β, and caspase-3 were evaluated in the lung tissues of all rats...
May 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28575360/microscopic-analysis-and-quality-assessment-of-induced-sputum-from-children-with-pneumonia-in-the-perch-study
#15
David R Murdoch, Susan C Morpeth, Laura L Hammitt, Amanda J Driscoll, Nora L Watson, Henry C Baggett, W Abdullah Brooks, Maria Deloria Knoll, Daniel R Feikin, Karen L Kotloff, Orin S Levine, Shabir A Madhi, Katherine L O'Brien, J Anthony G Scott, Donald M Thea, Dilruba Ahmed, Juliet O Awori, Andrea N DeLuca, Bernard E Ebruke, Melissa M Higdon, Possawat Jorakate, Ruth A Karron, Sidi Kazungu, Geoffrey Kwenda, Lokman Hossain, Sirirat Makprasert, David P Moore, Azwifarwi Mudau, John Mwaba, Sandra Panchalingam, Daniel E Park, Christine Prosperi, Rasheed Salaudeen, Aliou Toure, Scott L Zeger, Stephen R C Howie
Background.: It is standard practice for laboratories to assess the cellular quality of expectorated sputum specimens to check that they originated from the lower respiratory tract. The presence of low numbers of squamous epithelial cells (SECs) and high numbers of polymorphonuclear (PMN) cells are regarded as indicative of a lower respiratory tract specimen. However, these quality ratings have never been evaluated for induced sputum specimens from children with suspected pneumonia. Methods...
June 15, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28573410/depressed-polymorphonuclear-cell-functions-in-periparturient-cows-that-develop-postpartum-reproductive-diseases
#16
Rafiqul Islam, Harendra Kumar, Gyanendra Singh, Binsila B Krishnan, Sahadeb Dey
The study was planned to see if there is any important and significant changes in the PMN function in cows suffering from postpartum reproductive diseases (PRD). Blood sampling was done from 41 pregnant cows on 15 days prepartum (-15d), calving day (0d), 15 days (15d) and 30 days (30d) postpartum and thorough gynaecological examination was performed on 0d, 15d, 30d and 45d for diagnosis of PRD like retained placenta (RP), clinical metritis (CM), clinical endometritis (CE) and delayed involution of uterus (DIU)...
June 1, 2017: Veterinary Research Communications
https://www.readbyqxmd.com/read/28561381/estrogen-dependent-efficacy-of-limb-ischemic-preconditioning-in-female-rats
#17
Levente Pócs, Ágnes Janovszky, Dénes Garab, Gabriella Terhes, Imre Ocsovszki, József Kaszaki, Mihály Boros, József Piffkó, Andrea Szabó
Our aim was to examine the effects of ischemic preconditioning (IPC) on the local periosteal and systemic inflammatory consequences of hindlimb ischemia-reperfusion (IR) in Sprague-Dawley rats with chronic estrogen deficiency (13 weeks after ovariectomy, OVX) in the presence and absence of chronic 17beta-estradiol supplementation (E2, 20 µg kg(-1) , 5 days/week for 5 weeks); sham-operated (non-OVX) animals served as controls. As assessed by intravital fluorescence microscopy, rolling and the firm adhesion of polymorphonuclear neutrophil leukocytes (PMNs) gave similar results in the Sham + IR and OVX + IR groups in the tibial periosteal microcirculation during the 3-h reperfusion period after a 60-min tourniquet ischemia...
May 31, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28554055/graphene-oxide-as-an-efficient-antimicrobial-nanomaterial-for-eradicating-multi-drug-resistant-bacteria-in-vitro-and-in-vivo
#18
Xu Wu, Shirui Tan, Yuqian Xing, Qinqin Pu, Min Wu, Julia Xiaojun Zhao
Graphene is a novel two-dimensional nanomaterial with a growing number of practical applications across numerous fields. In this work, we explored potential biomedical applications of graphene oxide (GO) by systematically studying antibacterial capacity of GO in both macrophages and animal models. Three types of bacteria, including Klebsiella pneumoniae (Kp), Escherichia coli (E. coli) and P. aeruginosa (Pa) were used for in vitro study. Kp was also selected as a representative multidrug resistant (MDR) bacterium for in vivo study...
May 17, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28552375/multivitamins-preventive-therapy-against-subclinical-endometritis-in-buffaloes-its-correlation-to-nefa-and-oxidative-stress
#19
Eman A Ahmed, Doaa H Elsayed, Omnia E Kilany, Marwa A El-Beltagy
The current study was designed to elucidate the in vivo antioxidant, preventive, and ameliorating effects of vitamins AD3E on the incidence of subclinical endometritis (SCE) in buffaloes. Twenty-four buffaloes were divided equally into two groups; group I: control and group II: received AD3E combination. Endometrial cytological samples (n=48) were collected using cytobrush to diagnose SCE by counting polymorphonuclear cells (PMN) ≥6% at 5(th) (W5) and≥4% at 7(th) (W7) weeks postpartum. Results revealed that serum superoxide dismutase and nitric oxide significantly increased and decreased, respectively at W7 in AD3E group...
May 25, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/28552343/compound-edaravone-alleviates-lipopolysaccharide-lps-induced-acute-lung-injury-in-mice
#20
Zhengping Zhang, Zhaowen Luo, Aijing Bi, Weidong Yang, Wenji An, Xiaoliang Dong, Rong Chen, Shibao Yang, Huifang Tang, Xiaodong Han, Lan Luo
Acute lung injury (ALI) represents an unmet medical need with an urgency to develop effective pharmacotherapies. Compound edaravone, a combination of edaravone and borneol, has been developed for treatment of ischemia stroke in clinical phase III study. The purpose of the present study is to investigate the anti-inflammatory effect of compound edaravone on lipopolysaccharide (LPS)-induced inflammatory response in RAW264.7 cells and the therapeutic efficacy on LPS-induced ALI in mice. Edaravone and compound edaravone concentration-dependently decreased LPS-induced interleukin-6 (IL-6) production and cyclooxygenase-2 (COX-2) expression in RAW264...
May 25, 2017: European Journal of Pharmacology
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