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Interleukin 8

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https://www.readbyqxmd.com/read/28749447/enhanced-uptake-of-fe%C3%A2-o%C3%A2-nanoparticles-by-intestinal-epithelial-cells-in-a-state-of-inflammation
#1
Gang Zhou, Jin Zhang, Chun Pan, Naicheng Liu, Zhenheng Wang, Junfeng Zhang
Fe₃O₄ nanoparticles (Fe₃O₄ NPs) have been used for medical and drug applications, although the mechanisms of cellular uptake and transport need to be further evaluated under inflammatory conditions. In the present study, we investigated the uptake of Fe₃O₄ NPs (20, 50, 100, and 200 nm) by intestinal epithelial cells under inflammatory conditions via the light scattering of flow cytometry and inductively coupled plasma mass spectrometry (ICP-MS) techniques. The results of the correlation analysis indicated that the uptake ratios of Fe₃O₄ NPs by intestinal epithelial cells under inflammatory conditions were higher than those under the control conditions...
July 27, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28749438/synthesis-and-identification-of-novel-berberine-derivatives-as-potent-inhibitors-against-tnf-%C3%AE-induced-nf-%C3%AE%C2%BAb-activation
#2
Yan-Xiang Wang, Lu Liu, Qing-Xuan Zeng, Tian-Yun Fan, Jian-Dong Jiang, Hong-Bin Deng, Dan-Qing Song
Twenty-three new berberine (BBR) analogues defined on substituents of ring D were synthesized and evaluated for their activity for suppression of tumor necrosis factor (TNF)-α-induced nuclear factor (NF)-κB activation. Structure-activity relationship (SAR) analysis indicated that suitable tertiary/quaternary carbon substitutions at the 9-position or rigid fragment at position 10 might be beneficial for enhancing their anti-inflammatory potency. Among them, compounds 2d, 2e, 2i and 2j exhibited satisfactory inhibitory potency against NF-κB activation, with an inhibitory rate of around 90% (5 μM), much better than BBR...
July 27, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28749086/1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol-plag-reduces-hepatic-injury-in-concanavalin-a-treated-mice
#3
Young-Eun Ko, Sun Young Yoon, Sun-Yung Ly, Joo-Heon Kim, Ki-Young Sohn, Jae Wha Kim
1-palmitoyl-2-linoleoyl-3-acetyl-rac-glycerol (PLAG), a chemically synthesized monoacetyldiaglyceride, is one of the constituents in Sika deer antlers and has been known traditionally as having immunomodulatory effects. However, the mechanism by which PLAG controls neutrophil migration, which evokes liver injury in the hepatitis animal model, remains largely unknown. This study was designed to evaluate the immunomodulatory effects of PLAG on cytokine secretion and neutrophil migration in vivo and in vitro. The injection of mice with Concanavalin A (Con A) induced leukocyte infiltration in the liver and increased plasma cytokine levels...
July 27, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28748854/ratios-of-t-helper-2-cells-to-t-helper-1-cells-and-cytokine-levels-in-patients-with-hepatitis-b
#4
Ming-Hui Li, Dan Zhang, Lu Zhang, Xiao-Jing Qu, Yao Lu, Ge Shen, Shu-Ling Wu, Min Chang, Ru-Yu Liu, Lei-Ping Hu, Hong-Xiao Hao, Wen-Hao Hua, Shu-Jing Song, Gang Wan, Shun-Ai Liu, Yao Xie
BACKGROUND: Hepatitis B is an immune response-mediated disease. The aim of this study was to explore the differences of ratios of T-helper (Th) 2 cells to Th1 cells and cytokine levels in acute hepatitis B (AHB) patients and chronic hepatitis B virus (HBV)-infected patients in immune-tolerance and immune-active phases. METHODS: Thirty chronic HBV-infected patients in the immune-tolerant phase (IT group) and 50 chronic hepatitis B patients in the immune-active (clearance) phase (IC group), 32 AHB patients (AHB group), and 13 healthy individuals (HI group) were enrolled in the study...
August 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28748415/role-of-plasma-derived-fibrin-on-keratinocyte-and-fibroblast-wound-healing
#5
Jia Xian Law, Shiplu Roy Chowdhury, Bin Saim Aminuddin, Binti Haji Idrus Ruszymah
Fibrin has excellent biocompatibility and biological properties to support tissue regeneration and promote wound healing. However, the role of diluted fibrin in wound healing has yet to be elucidated as it is commonly used in high concentration. This study was aimed to examine the effects of diluted plasma-derived fibrin (PDF) on keratinocyte and fibroblast wound healing in term of cell proliferation, migration, extracellular matrix (ECM) production and soluble factor secretion. Two PDF concentrations, 10 and 20% (v/v) were tested on keratinocytes and fibroblasts indirectly co-cultured in the transwell system...
July 26, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28747868/protective-effect-of-momordica-charantia-water-extract-against-liver-injury-in-restraint-stressed-mice-and-the-underlying-mechanism
#6
Yuanyuan Deng, Qin Tang, Yan Zhang, Ruifen Zhang, Zhencheng Wei, Xiaojun Tang, Mingwei Zhang
Background: Momordica charantia is used in China for its jianghuo (heat-clearing and detoxifying) effects. The concept of shanghuo (the antonym of jianghuo, excessive internal heat) in traditional Chinese medicine is considered a type of stress response of the body. The stress process involves internal organs, especially the liver. Objective: We hypothesized that Momordica charantia water extract (MWE) has a hepatoprotective effect and can protect the body from stress. The aim of this study was to investigate the possible effects of MWE against liver injury in restraint-stressed mice...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28747718/predicting-the-functional-consequences-of-non-synonymous-single-nucleotide-polymorphisms-in-il8-gene
#7
Tikam Chand Dakal, Deepak Kala, Gourav Dhiman, Vinod Yadav, Andrey Krokhotin, Nikolay V Dokholyan
Here we report an in-silico approach for identification, characterization and validation of deleterious non-synonymous SNPs (nsSNPs) in the interleukin-8 gene using three steps. In first step, sequence homology-based genetic analysis of a set of 50 coding SNPs associated with 41 rsIDs using SIFT (Sorting Intolerant from Tolerant) and PROVEAN (Protein Variation Effect Analyzer) identified 23 nsSNPs to be putatively damaging/deleterious in at least one of the two tools used. Subsequently, structure-homology based PolyPhen-2 (Polymorphism Phenotyping) analysis predicted 9 of 23 nsSNPs (K4T, E31A, E31K, S41Y, I55N, P59L, P59S, L70P and V88D) to be damaging...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28747177/acute-coronary-syndrome-and-acute-kidney-injury-role-of-inflammation-in-worsening-renal-function
#8
Jorge Ortega-Hernández, Rashidi Springall, Fausto Sánchez-Muñoz, Julio-C Arana-Martinez, Héctor González-Pacheco, Rafael Bojalil
BACKGROUND: Acute Kidney Injury (AKI), a common complication of acute coronary syndromes (ACS), is associated with higher mortality and longer hospital stays. The role of cytokines and other mediators is unknown in AKI induced by an ACS (ACS-AKI), leading to several unanswered questions. The worsening of renal function is usually seen as a dichotomous phenomenon instead of a dynamic change, so evaluating changes of the renal function in time may provide valuable information in the ACS-AKI setting...
July 26, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28747175/cd133-cells-are-associated-with-adipocytokines-and-endothelial-dysfunction-in-hemodialysis-patients
#9
Abdullah Ozkok, Riza Atas, Suzan Adin Cinar, Akar Yilmaz, Esin Aktas, Gunnur Deniz, Alaattin Yildiz
BACKGROUND: Hemodialysis (HD) patients have increased risk of cardiovascular disease (CVD). Impaired stem cell health and adipocytokine metabolism may play important roles in the complex pathophysiological mechanisms of CVD in this patient population. We aimed to investigate the relationships between CD133+ cell counts, adipocytokines and parameters of endothelial dysfunction and atherosclerosis in HD patients. METHODS: In 58 chronic HD patients (male/female:28/30, mean age:58 ± 14 years), serum levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), leptin, adiponectin and resistin were measured by ELISA...
July 26, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28746216/the-impact-of-host-s-genetic-susceptibility-on-helicobacter-pylori-infection-in-children
#10
Maria Oana Mărginean, Cristina Oana Mărginean, Lorena Elena Meliţ, Septimiu Voidăzan, Valeriu Moldovan, Claudia Bănescu
The aim of our study was to investigate the impact of interleukin (IL)-6 190C/T, IL-6 174G/C, IL-6 572G/C, tumor necrosis factor-alpha (TNF-α) 308G/A, and angiotensin-converting enzyme (ACE) I/D gene polymorphisms on Helicobacter pylori (H. pylori) infection in children.A cross-sectional study was performed on 126 children (57 children with H. pylori infection and 69 children without H. pylori infection) aged between 3 and 18 years presenting to a Pediatrics Tertiary Hospital from Romania. Children were assessed clinically, endoscopically, histopathologically, and genetically...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28745926/safety-and-efficacy-of-empirical-interleukin-1-inhibition-using-anakinra-in-aa-amyloidosis-of-uncertain-aetiology
#11
Thirusha Lane, Ashutosh D Wechalekar, Julian D Gillmore, Philip N Hawkins, Helen J Lachmann
OBJECTIVE: AA amyloidosis is a serious complication of persistent inflammation, which, untreated will progress to renal failure and death. Effective suppression of the underlying inflammatory disease is the focus of treatment. However, in approximately 20% of cases the underlying condition remains uncertain, presenting a dilemma as to choice of treatment. METHODS: We conducted a retrospective study of a cohort of 11 patients diagnosed with AA amyloidosis of unknown aetiology, who had been empirically treated with anakinra...
July 26, 2017: Amyloid: the International Journal of Experimental and Clinical Investigation
https://www.readbyqxmd.com/read/28745470/effects-of-taurine-on-markers-of-muscle-damage-inflammatory-response-and-physical-performance-in-triathletes
#12
Bryan S Martinez Galan, Flavia Giolo de Carvalho, Priscila Carvalho Santos, Ronaldo Bucken Gobbi, Carlos Kalva-Filho, Marcelo Papoti, Adelino Sanchez Silva, Ellen C Freitas
BACKGROUND: The practice of prolonged exercise with high intensity, as seen in triathlon training, can cause physiological imbalances that might result in muscle fatigue, muscle damage and changes in systemic inflammatory response, thus reduce the athletes physical performance, therefore, both adequate total caloric and macronutrient intake also the use of a specific ergogenic aid, as taurine supplementation would be an alternative to prevent inflammation and muscle damage. In order to verify the effects of 8 weeks of taurine and chocolate milk supplementation, markers of muscle damage, inflammation, and aerobic capacity were quantified in triathletes...
July 25, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28745354/soybean-isoflavones-ameliorate-ischemic-cardiomyopathy-by-activating-nrf2-mediated-antioxidant-responses
#13
Yang Li, Haiyan Zhang
Ischemic cardiomyopathy (IC) is the major cause of heart failure. Conventional medicine has been proved ineffective with adverse effects. Soybean presents exciting adjunctive therapies and shows protective benefits for IC. However, the molecular mechanisms remain unclear. Isoflavones are the main bioactive components of soybean and may be protective against heart disease. Isoflavones were extracted by using an acidic-ethanol method and analyzed by HPLC. All patients with ischemic stroke were randomly and evenly assigned to two groups: the isoflavone group (80 mg day(-1), n = 100) and control group (80 mg day(-1) placebo, n = 100), and the whole period of the experiment was 24 weeks...
July 26, 2017: Food & Function
https://www.readbyqxmd.com/read/28745079/cytokine-production-in-mammary-adenocarcinoma-and-its-microenvironmental-cells-in-patients-with-or-without-metastases-in-regional-lymph-nodes
#14
Alexander Autenshlyus, Sergey Arkhipov, Elena Mikhailova, Igor Marinkin, Valentina Arkhipova, Ekaterina Mogilnaya, Nikolay Varaksin, Michael Rukavishnikov
In recent years, the concept of formation of a sufficiently autonomous cytokine network in a malignant tumour has emerged. In this regard, the data on the role of this network and its signalling pathways in the process of metastasis are an interesting topic. The aim of this study was to evaluate the in vitro cytokine-producing potential of mammary adenocarcinoma (MAC; and cells of its microenvironment) from patients with or without metastases in regional lymph nodes (LNs). By enzyme-linked immunosorbent assays of culture supernatants, we studied the cytokine production by biopsy samples of MAC: spontaneous and stimulated by polyclonal activators (PAs: phytohaemagglutinin, concanavalin A and lipopolysaccharide)...
July 1, 2017: International Journal of Immunopathology and Pharmacology
https://www.readbyqxmd.com/read/28744796/pharmacokinetics-of-abt-122-a-tnf-%C3%AE-and-il-17a-targeted-dual-variable-domain-immunoglobulin-in-healthy-subjects-and-patients-with-rheumatoid-arthritis-results-from-three-phase-i-trials
#15
Amit Khatri, Sandra Goss, Ping Jiang, Heikki Mansikka, Ahmed A Othman
BACKGROUND AND OBJECTIVE: ABT-122 is a dual-variable domain immunoglobulin that neutralizes both tumor necrosis factor-α and interleukin-17A, with the goal of achieving greater clinical efficacy than can be achieved by blocking either cytokine alone. This work characterized the pharmacokinetics of ABT-122 in healthy subjects and in patients with rheumatoid arthritis. METHODS: ABT-122 pharmacokinetics was evaluated in three phase I studies. In Study 1, single intravenous (0...
July 25, 2017: Clinical Pharmacokinetics
https://www.readbyqxmd.com/read/28743816/penile-anaerobic-dysbiosis-as-a-risk-factor-for-hiv-infection
#16
Cindy M Liu, Jessica L Prodger, Aaron A R Tobian, Alison G Abraham, Godfrey Kigozi, Bruce A Hungate, Maliha Aziz, Fred Nalugoda, Sanjeev Sariya, David Serwadda, Rupert Kaul, Ronald H Gray, Lance B Price
Sexual transmission of HIV requires exposure to the virus and infection of activated mucosal immune cells, specifically CD4(+) T cells or dendritic cells. The foreskin is a major site of viral entry in heterosexual transmission of HIV. Although the probability of acquiring HIV from a sexual encounter is low, the risk varies even after adjusting for known HIV risk factors. The genital microbiome may account for some of the variability in risk by interacting with the host immune system to trigger inflammatory responses that mediate the infection of mucosal immune cells...
July 25, 2017: MBio
https://www.readbyqxmd.com/read/28743557/a-high-fat-high-protein-diet-attenuates-the-negative-impact-of-casein-induced-chronic-inflammation-on-testicular-steroidogenesis-and-sperm-parameters-in-adult-mice
#17
Jing-Lu Zhao, Yu-Yun Zhao, Wei-Jie Zhu
Theinteractionbetweenobesityandchronicinflammationhasbeenstudied. Diet-induced obesity or chronic inflammation could reduce the testicular functions of males. However, the mechanism underlying the reproductive effects of fattening foods in males with or without chronic inflammation still needs further discussion. This study was aimed to investigate the effects of high-fat, high-protein diet on testicular steroidogenesis and sperm parameters in adult mice under physiological and chronic inflammatory conditions...
July 22, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28743332/-clinical-significance-of-early-immunological-paralysis-in-patients-with-severe-h1n1-influenza-a
#18
Yongbing Qian, Hui Xie, Rui Tian, Jian Lu, Wei Jin, Ruilan Wang
OBJECTIVE: To analysis the immunological characteristics of patients with severe H1N1 influenza A, and to provide theoretical basis for predicting the prognosis of the disease. METHODS: A retrospective analysis was conducted. The clinical data of 15 patients diagnosed with severe H1N1 influenza A and admitted to Shanghai General Hospital of Nanjing Medical University from October 2015 to December 2016 were collected. All the patients were divided into survival and death groups according to 28-day survival...
July 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28743324/atomic-force-microscopy-study-of-the-anti-inflammatory-effects-of-triptolide-on-rheumatoid-arthritis-fibroblast-like-synoviocytes
#19
Zhanhui Su, Han Sun, Man Ao, Chunying Zhao
High-resolution atomic force microscopy (AFM) was used for the in situ evaluation of the anti-inflammatory effects of triptolide on rheumatoid arthritis (RA) fibroblast-like synoviocytes (FLS) to understand the anti-RA effects of triptolide, based on the morphological and biophysical changes observed in RA-FLS. RA-FLS have been reported to play a primary role in inflammatory bone destruction during the development of RA and thus are regarded as an important target for RA treatment. Triptolide pretreatment significantly inhibited tumor necrosis factor-α-induced expression of the interleukin (IL)-1β, IL-6, and IL-8 genes in MH7A cells...
July 26, 2017: Microscopy and Microanalysis
https://www.readbyqxmd.com/read/28742973/role-of-vitamin-a-oral-supplementation-on-oxidative-stress-and-inflammatory-response-in-the-liver-of-trained-rats
#20
Lyvia Lintzmaier Petiz, Alice Kunzler, Rafael Calixto Bortolin, Juciano Gasparotto, Cristiane Matté, José Claudio Fonseca Moreira, Daniel Pens Gelain
The use of dietary supplements to enhance the benefit of exercise training is a common practice. The liver is the organ where all substances are metabolized, and certain supplements have been associated with liver injury. Vitamin A (VA), a liposoluble vitamin stored in the liver, is commonly used as an antioxidant supplement. Here, we evaluated the effect of chronic VA supplementation on oxidative damage and stress parameters in trained rats. Animals were divided into the following groups: sedentary (SE), sedentary/VA (SE+VA), exercise training (ET), and exercise training/VA (ET+VA)...
July 25, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
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