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Neutrophil inflammation

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https://www.readbyqxmd.com/read/28434120/involvement-of-fas-fasl-pathway-in-the-murine-model-of-atopic-dermatitis
#1
Karolina Bień, Magdalena Żmigrodzka, Piotr Orłowski, Aleksandra Fruba, Łukasz Szymański, Wanda Stankiewicz, Zuzanna Nowak, Tadeusz Malewski, Małgorzata Krzyżowska
OBJECTIVE AND DESIGN: The aim of this study was to elucidate the role of apoptosis mediated through Fas/FasL pathway using the mouse model of atopic dermatitis (AD). MATERIALS AND TREATMENT: AD was induced by epicutaneous application of ovalbumin (OVA) in wild-type C57BL/6, B6. MRL-Faslpr/J (Fas-) and B6Smn.C3-Faslgld/J (FasL-) mouse strains. METHODS: Skin samples were subjected to staining for Fas/FasL expression, M30 epitope and assessment of inflammatory response via immunohistochemical staining...
April 22, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28433943/acute-lung-injury-leads-to-depression-like-symptoms-through-upregulation-of-neutrophilic-and-neuronal-nadph-oxidase-signaling-in-a-murine-model
#2
Ahmed Nadeem, Nahid Siddiqui, Naif O Al-Harbi, Sabry M Attia, Shakir D AlSharari, Sheikh F Ahmad
There is an increased prevalence of comorbid major depressive disorders with a number of inflammatory conditions which is thought to result from activation of the immune system. Acute lung injury (ALI) in humans has been also shown to be associated with depression previously. However, no study has explored the mechanism behind ALI-induced depression. NADPH oxidase (NOX-2) derived reactive oxygen species (ROS) are associated with neuropsychiatric disorders including depression. ROS generation via NOX-2 is also shown to be involved in the pathogenesis of ALI...
April 20, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28432279/il-35-induces-n2-phenotype-of-neutrophils-to-promote-tumor-growth
#3
Jiu-Ming Zou, Jian Qin, Yong-Chao Li, Yu Wang, Dong Li, Yu Shu, Chao Luo, Shan-Shan Wang, Gang Chi, Fang Guo, Gui-Mei Zhang, Zuo-Hua Feng
IL-35 is an immunosuppressive cytokine and exerts regulatory effects on T cells, B cells, macrophages and dendritic cells. Neutrophils are important innate immune cells that play key roles in tumor development. The effect of IL-35 on neutrophils remains unknown. Here, we report that IL-35 can induce N2 neutrophil polarization (protumor phenotype) by increasing G-CSF and IL-6 production, and promote neutrophil infiltration into tumor microenvironment. The sustained expression of IL-35 could promote chronic inflammation to augment the proangiogenic and immunosuppressive function of neutrophils...
April 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28432145/bacterial-siderophores-hijack-neutrophil-functions
#4
Piu Saha, Beng San Yeoh, Rodrigo A Olvera, Xia Xiao, Vishal Singh, Deepika Awasthi, Bhagawat C Subramanian, Qiuyan Chen, Madhu Dikshit, Yanming Wang, Carole A Parent, Matam Vijay-Kumar
Neutrophils are the primary immune cells that respond to inflammation and combat microbial transgression. To thrive, the bacteria residing in their mammalian host have to withstand the antibactericidal responses of neutrophils. We report that enterobactin (Ent), a catecholate siderophore expressed by Escherichia coli, inhibited PMA-induced generation of reactive oxygen species (ROS) and neutrophil extracellular traps (NETs) in mouse and human neutrophils. Ent also impaired the degranulation of primary granules and inhibited phagocytosis and bactericidal activity of neutrophils, without affecting their migration and chemotaxis...
April 21, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28431566/the-prognostic-value-of-the-preoperative-c-reactive-protein-albumin-ratio-in-ovarian-cancer
#5
Yubo Liu, Shengfu Chen, Chengyu Zheng, Miao Ding, Lan Zhang, Liangan Wang, Meiqing Xie, Jianhua Zhou
BACKGROUND: Inflammation plays an important role in the pathogenesis of ovarian cancer. This study sought to investigate the association between the preoperative c-reactive protein/albumin ratio (CRP/Alb) and oncological outcomes in ovarian cancer patients. METHODS: Two hundred patients with histologically verified ovarian cancer between June 2006 and July 2012 were retrospectively reviewed. Overall survival was evaluated by the Kaplan-Meier method and log-rank test...
April 21, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28431555/reduction-of-pulmonary-toxicity-of-metal-oxide-nanoparticles-by-phosphonate-based-surface-passivation
#6
Xiaoming Cai, Anson Lee, Zhaoxia Ji, Cynthia Huang, Chong Hyun Chang, Xiang Wang, Yu-Pei Liao, Tian Xia, Ruibin Li
BACKGROUND: The wide application of engineered nanoparticles has induced increasing exposure to humans and environment, which led to substantial concerns on their biosafety. Some metal oxides (MOx) have shown severe toxicity in cells and animals, thus safe designs of MOx with reduced hazard potential are desired. Currently, there is a lack of a simple yet effective safe design approach for the toxic MOx. In this study, we determined the key physicochemical properties of MOx that lead to cytotoxicity and explored a safe design approach for toxic MOx by modifying their hazard properties...
April 21, 2017: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/28430696/sequential-analysis-of-a-panel-of-biomarkers-and-pathologic-findings-in-a-resuscitated-rat-model-of-sepsis-and-recovery
#7
Nishkantha Arulkumaran, Marije L Sixma, Elisa Jentho, Elias Ceravola, Paul S Bass, John A Kellum, Robert J Unwin, Fred W K Tam, Mervyn Singer
OBJECTIVES: To characterize the temporal pattern of a panel of blood and urinary biomarkers in an animal model of fecal peritonitis and recovery. DESIGN: Prospective observational animal study. SETTING: University research laboratory. SUBJECTS: Male Wistar rats. INTERVENTIONS: A fluid-resuscitated, long-term (3 d) rat model of sepsis (fecal peritonitis) and recovery was used to understand the temporal association of sepsis biomarkers in relation to systemic hemodynamics, inflammation, and renal function...
April 20, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28430605/prognostic-significance-of-neutrophil-to-lymphocyte-ratio-in-patients-with-malignant-pleural-mesothelioma-a-meta-analysis
#8
Nan Chen, Shuai Liu, Lin Huang, Wanling Li, Wenhao Yang, Tianxin Cong, Lin Ding, Meng Qiu
Systemic inflammation responses can be reflected by peripheral blood count and combine index like the neutrophil-to-lymphocyte (NLR). The NLR has been reported to be a poor prognostic indicator in cancer recently. However, the prognostic effect of the NLR in patients with malignant pleural mesothelioma (MPM) still unclear yet. We conducted this meta-analysis aiming to evaluate the pooled value of NLR in prognosis as well as clinical characteristics in malignant pleural mesothelioma. A total of 11 studies with 1533 patients were included in this meta-analysis, in which 10 studies investigated the prognosis role of NLR using hazard ratio (HR) and 95% confidence intervals (95% CI)...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28429725/estrogen-reprograms-the-activity-of-neutrophils-to-foster-protumoral-microenvironment-during-mammary-involution
#9
Hwa Hwa Chung, Yu Zuan Or, Smeeta Shrestha, Jia Tong Loh, Chew Leng Lim, Zoe Ong, Amanda Rui En Woo, I-Hsin Su, Valerie C L Lin
Epidemiological studies have indicated increased risk for breast cancer within 10 years of childbirth. Acute inflammation during mammary involution has been suggested to promote this parity-associated breast cancer. We report here that estrogen exacerbates mammary inflammation during involution. Microarray analysis shows that estrogen induces an extensive proinflammatory gene signature in the involuting mammary tissue. This is associated with estrogen-induced neutrophil infiltration. Furthermore, estrogen induces the expression of protumoral cytokines/chemokines, COX-2 and tissue-remodeling enzymes in isolated mammary neutrophils and systemic neutrophil depletion abolished estrogen-induced expression of these genes in mammary tissue...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28429222/comparison-of-the-effects-of-mitochondria-targeted-antioxidant-10-6-plastoquinonyl-decyltriphenylphosphonium-bromide-skq1-and-a-fragment-of-its-molecule-dodecyltriphenylphosphonium-on-carrageenan-induced-acute-inflammation-in-mouse-model-of-subcuteneous-air
#10
M A Chelombitko, O A Averina, T V Vasil'eva, E E Dvorianinova, M V Egorov, O Yu Pletjushkina, E N Popova, A V Fedorov, V P Romashchenko, O P Ilyinskaya
The effect of mitochondria-targeted antioxidant 10-(6'-plastoquinonyl) decyltriphenylphosphonium bromide (SkQ1) and its fragment dodecyltriphenylphosphonium (C12TPP), weak uncouplers of respiration and oxidative phosphorylation, was studied using a mouse model of carrageenan-induced acute inflammation in the subcutaneous air pouch. In our model, SkQ1 demonstrated a strong anti-inflammatory effect that manifested in a decrease in the absolute number of inflammatory cells, mainly neutrophils, and their relative number in parallel with an increase in macrophages and mast cell content in the inflammatory exudate...
April 21, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28428948/understanding-the-entanglement-neutrophil-extracellular-traps-nets-in-cystic-fibrosis
#11
REVIEW
Saira R Martínez-Alemán, Lizbeth Campos-García, José P Palma-Nicolas, Romel Hernández-Bello, Gloria M González, Alejandro Sánchez-González
Cystic fibrosis (CF) is an autosomal recessive disorder caused by mutations in the gene that codes for the CF trans-membrane conductance regulator. These mutations result in abnormal secretions viscous airways of the lungs, favoring pulmonary infection and inflammation in the middle of neutrophil recruitment. Recently it was described that neutrophils can contribute with disease pathology by extruding large amounts of nuclear material through a mechanism of cell death known as Neutrophil Extracellular Traps (NETs) into the airways of patients with CF...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28428349/toll-like-receptor-4-mediates-hemorrhagic-transformation-after-delayed-tissue-plasminogen-activator-administration-in-in-situ-thromboembolic-stroke
#12
Alicia García-Culebras, Sara Palma-Tortosa, Ana Moraga, Isaac García-Yébenes, Violeta Durán-Laforet, Maria I Cuartero, Juan de la Parra, Ana L Barrios-Muñoz, Jaime Díaz-Guzmán, Jesús M Pradillo, María A Moro, Ignacio Lizasoain
BACKGROUND AND PURPOSE: Hemorrhagic transformation is the main complication of revascularization therapies after stroke. Toll-like receptor 4 (TLR4) is implicated in cerebral damage and inflammation in stroke. This study was designed to determine the role of TLR4 in hemorrhagic transformation development after tissue plasminogen activator (tPA) administration. METHODS: Mice expressing (TLR4(+/+)) or lacking functional TLR4 (TLR4(-)(/-)) were subjected to middle cerebral artery occlusion using an in situ thromboembolic model by thrombin injection into the middle cerebral artery, and tPA (10 mg/kg) was administered 20 minutes or 3 hours after ischemia...
April 20, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28428089/enhanced-anti-rheumatic-activity-of-methotrexate-entrapped-ultradeformable-liposomal-gel-in-adjuvant-induced-arthritis-rat-model
#13
Alam Zeb, Omer Salman Qureshi, Chan-Hee Yu, Muhammad Akram, Hyung-Seo Kim, Myung-Sic Kim, Jong-Ho Kang, Arshad Majid, Sun-Young Chang, Ok-Nam Bae, Jin-Ki Kim
The aim of this study is to investigate in vivo anti-rheumatic activity of methotrexate-entrapped ultradeformable liposomal gel (MTX-UDLs-gel) in adjuvant-induced arthritis rat model. Methotrexate-entrapped ultradeformable liposomes (MTX-UDLs) with the optimal phosphatidylcholine to Tween 80 ratio (7:3, w/w) were incorporated into 1% Carbopol gel. MTX-UDLs-gel was characterized in terms of appearance, clarity, homogeneity, pH and drug content. The permeation of MTX-UDLs-gel across rat skin was investigated using Franz diffusion cell...
April 17, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28428003/rac1-signaling-regulates-cigarette-smoke-induced-inflammation-in-the-lung-via-the-erk1-2-mapk-and-stat3-pathways
#14
Jun-Xia Jiang, Shui-Juan Zhang, Hui-Juan Shen, Yan Guan, Qi Liu, Wei Zhao, Yong-Liang Jia, Jian Shen, Xiao-Feng Yan, Qiang-Min Xie
Cigarette smoke (CS) is a major risk factor for the development of chronic obstructive pulmonary disease (COPD). Our previous studies have indicated that Rac1 is involved in lipopolysaccharide-induced pulmonary injury and CS-mediated epithelial-mesenchymal transition. However, the contribution of Rac1 activity to CS-induced lung inflammation remains not fully clear. In this study, we investigated the regulation of Rac1 in CS-induced pulmonary inflammation. Mice or 16HBE cells were exposed to CS or cigarette smoke extract (CSE) to induce acute inflammation...
April 17, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28427999/serpinb1-ameliorates-acute-lung-injury-in-liver-transplantation-through-erk1-2-mediated-stat3-dependent-ho-1-induction
#15
Weifeng Yao, Haobo Li, Gangjian Luo, Xiang Li, Chaojin Chen, Dongdong Yuan, Xinjin Chi, Zhengyuan Xia, Ziqing Hei
BACKGROUND: Postoperative acute lung injury(ALI) is a severe complication after liver transplantation, which severely affects postoperative patients' survival. The underlying mechanism is largely unknown and effective treatment limited. We explored the role of serpin protease inhibitor B1(SERPINB1), a potent inhibitor of neutrophil serine proteases, in ALI in liver transplantation and its interplay with signal transducer and activator of transcription 3(STAT3) and heme oxygenase-1(HO-1)...
April 17, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28426800/neutrophil-lymphocyte-ratio-predicts-short-term-mortality-in-patients-with-hepatitis-b-virus-related-acute-on-chronic-liver-failure-treated-with-an-artificial-liver-support-system
#16
Zeng Fan, Chen EnQiang, Du Ling Yao, Yan LiBo, Li Hong, Bai Lang, Feng Ping, Tang Hong
AIM: Hepatitis B virus-related acute-on-chronic liver failure has high short-term mortality. Artificial liver support systems (ALSS) may improve outcome and avoid liver transplantation, but predicting short-term prognosis in such patients is difficult. This study aimed to determine whether the neutrophil-lymphocyte ratio (NLR), an inflammation marker, predicted mortality in patients treated with ALSS. METHODS: A total of 560 patients with hepatitis B virus-related acute-on-chronic liver failure were enrolled, 338 were treated with ALSS and the others treated with standard of care(SOC)...
2017: PloS One
https://www.readbyqxmd.com/read/28425575/high-dose-supplementation-of-vitamin-d-affects-measures-of-systemic-inflammation-reductions-in-high-sensitivity-c-reactive-protein-level-and-neutrophil-to-lymphocyte-ratio-nlr-distribution
#17
Seyed-Amir Tabatabaeizadeh, Amir Avan, Afsane Bahrami, Ezzat Khodashenas, Habibollah Esmaeili, Gordon A Ferns, Mojtaba Fattahi Abdizadeh, Majid Ghayour-Mobarhan
BACKGROUND: The prevalence of Vitamin D deficiency is increasing worldwide, which has be shown to be associated with increased risk of cardiovascular disease (CVD), autoimmune disease and metabolic syndrome. These conditions are also associated with a heightened state of inflammation. The aim of the current study was to evaluate the effect of vitamin D supplementation on serum C - reactive protein (CRP) level and Neutrophil-to-lymphocyte ratio (NLR) distribution in a large cohort of adolescent girls...
April 20, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28425045/soluble-triggering-receptor-expressed-on-myeloid-cell-1-strem-1-a-potential-biomarker-for-the-diagnosis-of-infectious-diseases
#18
REVIEW
Changlin Cao, Jingxian Gu, Jingyao Zhang
Sensitive and useful biomarkers for the diagnosis and prognosis of infectious diseases have been widely developed. An example of these biomarkers is triggering receptor expressed on myeloid cell-1 (TREM-1), which is a cell surface receptor expressed on monocytes/macrophages and neutrophils. TREM-1 amplifies inflammation by activating the TREM-1/DAP12 pathway. This pathway is triggered by the interaction of TREM-1 with ligands or stimulation by bacterial lipopolysaccharide. Consequently, pro-inflammatory cytokines and chemokines are secreted...
April 19, 2017: Frontiers of Medicine
https://www.readbyqxmd.com/read/28424660/ccl2-monocyte-chemoattractant-protein-1-and-parathyroid-hormone-action-on-bone
#19
REVIEW
Jawed Akhtar Siddiqui, Nicola C Partridge
Chemokines are small molecules that play a crucial role as chemoattractants for several cell types, and their components are associated with host immune responses and repair mechanisms. Chemokines selectively recruit monocytes, neutrophils, and lymphocytes and induce chemotaxis through the activation of G protein-coupled receptors. Two well-described chemokine families (CXC and CC) are known to regulate the localization and trafficking of immune cells in cases of injury, infection, and tumors. Monocyte chemoattractant protein 1 (MCP-1/CCL2) is one of the important chemokines from the CC family that controls migration and infiltration of monocytes/macrophages during inflammation...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28424616/whole-blood-cytokine-response-to-local-traffic-related-particulate-matter-in-peruvian-children-with-and-without-asthma
#20
Jesse P Negherbon, Karina Romero, D'Ann L Williams, Rafael E Guerrero-Preston, Thomas Hartung, Alan L Scott, Patrick N Breysse, William Checkley, Nadia N Hansel
This study sought to investigate if acute phase immune responses of whole blood from Peruvian children with controlled and uncontrolled asthma differed from children without asthma, following exposure to traffic-related particulate matter (TRPM). TRPM, including particulate matter from diesel combustion, has been shown to stimulate acute airway inflammation in individuals with and without asthma. For this study, a whole blood assay (WBA) was used to test peripheral whole blood samples from 27 children with asthma, and 12 without asthma...
2017: Frontiers in Pharmacology
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