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https://www.readbyqxmd.com/read/28549401/human-in-situ-cytokine-and-leukocyte-responses-to-acute-smoking
#1
Tegan Kastelein, Rob Duffield, Frank Marino
This study examined immune/inflammatory parameters following an acute tobacco smoking episode in smokers with varying smoking histories. Twenty-eight male habitual smokers were categorized according to smoking history, e.g. younger smoker (YSM) or middle-aged smoker (MSM). Participants were matched for fitness and smoking habits and following baseline testing, undertook a smoking protocol involving consumption of two cigarettes within 15 min. Venous blood was collected pre- and immediately, 1 h, and 4 h post-protocol to permit analyses of circulating levels of interleukin (IL)-6, IL-1β, IL-1ra, monocyte chemoattractant protein-1 (MCP-1), C-reactive protein (CRP), and leukocytes...
December 2017: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/28546328/microrna-15a-16-1-antagomir-ameliorates-ischemic-brain-injury-in-experimental-stroke
#2
Xinxin Yang, Xuelian Tang, Ping Sun, Yejie Shi, Kai Liu, Sulaiman H Hassan, R Anne Stetler, Jun Chen, Ke-Jie Yin
BACKGROUND AND PURPOSE: Dysregulation of the miR-15a/16-1 cluster in plasma has been reported in patients with stroke as a potential biomarker for diagnostic and prognostic use. However, the essential role and therapeutic potential of the miR-15a/16-1 cluster in ischemic stroke are poorly understood. This study is aimed at investigating the regulatory role of the miR-15a/16-1 cluster in ischemic brain injury and insight mechanisms. METHODS: Adult male miR-15a/16-1 knockout and wild-type mice, or adult male C57 BL/6J mice injected via tail vein with the miR-15a/16-1-specific inhibitor (antagomir, 30 pmol/g), were subjected to 1 hour of middle cerebral artery occlusion and 72 hours of reperfusion...
May 25, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28545809/macrophage-specific-nanotechnology-driven-cd163-overexpression-in-human-macrophages-results-in-an-m2-phenotype-under-inflammatory-conditions
#3
Perla Abigail Alvarado-Vazquez, Laura Bernal, Candler A Paige, Rachel L Grosick, Carolina Moracho Vilrriales, David Wilson Ferreira, Cristina Ulecia-Morón, E Alfonso Romero-Sandoval
M1 macrophages release proinflammatory factors during inflammation. They transit to an M2 phenotype and release anti-inflammatory factors to resolve inflammation. An imbalance in the transition from M1 to M2 phenotype in macrophages contributes to the development of persistent inflammation. CD163, a member of the scavenger receptor cysteine-rich family, is an M2 macrophage marker. The functional role of CD163 during the resolution of inflammation is not completely known. We postulate that CD163 contributes to the transition from M1 to M2 phenotype in macrophages...
May 16, 2017: Immunobiology
https://www.readbyqxmd.com/read/28545667/arctigenin-suppresses-renal-interstitial-fibrosis-in-a-rat-model-of-obstructive-nephropathy
#4
Ao Li, Xiaoxun Zhang, Mao Shu, Mingjun Wu, Jun Wang, Jingyao Zhang, Rui Wang, Peng Li, Yitao Wang
BACKGROUND: Renal tubulointerstitial fibrosis (TIF) is commonly the final result of a variety of progressive injuries and leads to end-stage renal disease. There are few therapeutic agents currently available for retarding the development of renal TIF. PURPOSE: The aim of the present study is to evaluate the role of arctigenin (ATG), a lignan component derived from dried burdock (Arctium lappa L.) fruits, in protecting the kidney against injury by unilateral ureteral obstruction (UUO) in rats...
July 1, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28544187/chemical-composition-and-immuno-modulatory-effects-of-urtica-dioica-l-stinging-nettle-extracts
#5
Marina Francišković, Raquel Gonzalez-Pérez, Dejan Orčić, Fermín Sánchez de Medina, Olga Martínez-Augustin, Emilija Svirčev, Nataša Simin, Neda Mimica-Dukić
The purpose of this work was to determine the chemical profile of stinging nettle and to provide an insight into the mechanisms by which it ameliorates the immune response. Qualitative and quantitative liquid chromatography tandem mass spectrometry analyses indicated that phenolic acids (5-O-caffeoylquinic acid as dominant) and flavonol glycosides (rutin, isoquercitrin, and kaempferol 3-O-glucoside) are present in the aerial parts, while lignans (secoisolariciresinol, 9,9'-bisacetyl-neo-olivil and their glucosides) were detected in the root...
May 24, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28542370/upregulation-of-tlr4-via-pkc-activation-contributes-to-impaired-wound-healing-in-high-glucose-treated-kidney-proximal-tubular-cells
#6
Jianping Peng, Hang Zheng, Xia Wang, Zhixiang Cheng
Acute kidney injury (AKI) leads to a worse prognosis in diabetic patients compared with prognoses in non-diabetic patients, but whether and how diabetes affects kidney repair after AKI remains unknown. Here, we used scratch-wound healing and transwell migration models to examine whether and how wound healing is affected by high glucose levels in cultured kidney proximal tubular cells (RPTC). The results show that scratch-wound healing and transwell migration were significantly slower in high-glucose-treated kidney tubular cells (30 mM glucose) than in low-glucose-treated cells (5...
2017: PloS One
https://www.readbyqxmd.com/read/28539682/the-human-body-as-an-energetic-hybrid-new-perspectives-for-chronic-disease-treatment
#7
REVIEW
Michał Gajewski, Przemysław Rzodkiewicz, Sławomir Maśliński
Inflammatory response is accompanied by changes in cellular energy metabolism. Proinflammatory mediators like plasma C-reactive protein, IL-6, plasminogen activator inhibitor-1, TNF-α or monocyte chemoattractant protein-1 released in the site of inflammation activates immune cells and increase energy consumption. Increased demand for energy creates local hypoxia and lead in consequence to mitochondrial dysfunction. Metabolism of cells is switched to anaerobic glycolysis. Mitochondria continuously generate free radicals that what result in imbalance that causes oxidative stress, which results in oxidative damage...
2017: Reumatologia
https://www.readbyqxmd.com/read/28538192/hepatic-anti-inflammatory-effect-of-hexane-extracts-of-dioscorea-batatas-decne-possible-suppression-of-toll-like-receptor-4-mediated-signaling
#8
Hyun Jung Koo, SungRyul Lee, Kwang Jin Chang, Eunsoo Sohn, Eun-Hwa Sohn, Se Chan Kang, Suhkneung Pyo
The hepatic anti-inflammatory potential of hexane extracts of Dioscorea batatas Decne edible part (EDH-1e) and bark (EDH-2b) were investigated in Western-type diet-fed apolipoprotein E null [ApoE (-/-)] mice and HepG2 cells. EDH-1e and EDH-2b suppressed the increased levels of tumor necrosis factor alpha (TNF-α), interleukin (IL)-6, transforming growth factor beta 1 (TGF-β1), vascular cell adhesion protein 1 (VCAM-1), and monocyte chemoattractant protein-1 (MCP-1), and reduced infiltration of monocytes into liver tissue...
May 21, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28537453/expression-regulation-and-effects-of-interleukin-17f-in-the-human-ocular-surface
#9
Aihua Hou, Louis Tong
PURPOSE: To evaluate the basal and possibly stimulated expression of interleukin (IL)-17 in the context of the ocular surface and potential downstream effects. METHODS: Western blot and immunofluorescent staining were used to evaluate IL-17F expression in human cornea/conjunctival tissues and cornea epithelial cell line. Cytokines and matrix metalloproteinase (MMP) transcripts were quantified by qPCR. IL-17F effects on NF-κB were investigated by the secretary alkaline phosphatase assay...
May 24, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28536301/key-determinants-of-selective-binding-and-activation-by-the-monocyte-chemoattractant-proteins-at-the-chemokine-receptor-ccr2
#10
Zil E Huma, Julie Sanchez, Herman D Lim, Jessica L Bridgford, Cheng Huang, Bradyn J Parker, Jiann G Pazhamalil, Benjamin T Porebski, Kevin D G Pfleger, J Robert Lane, Meritxell Canals, Martin J Stone
Chemokines and their receptors collectively orchestrate the trafficking of leukocytes in normal immune function and inflammatory diseases. Different chemokines can induce distinct responses at the same receptor. In comparison to monocyte chemoattractant protein-1 (MCP-1; also known as CCL2), the chemokines MCP-2 (CCL8) and MCP-3 (CCL7) are partial agonists of their shared receptor CCR2, a key regulator of the trafficking of monocytes and macrophages that contribute to the pathology of atherosclerosis, obesity, and type 2 diabetes...
May 23, 2017: Science Signaling
https://www.readbyqxmd.com/read/28535426/new-role-of-pcsk9-in-atherosclerotic-inflammation-promotion-involving-the-tlr4-nf-%C3%AE%C2%BAb-pathway
#11
Zhi-Han Tang, Juan Peng, Zhong Ren, Jing Yang, Ting-Ting Li, Tao-Hua Li, Zuo Wang, Dang-Heng Wei, Lu-Shan Liu, Xi-Long Zheng, Zhi-Sheng Jiang
BACKGROUND AND AIMS: Proprotein convertase subtilisin/kexin 9 (PCSK9) has emerged as a popular target in the development of new cholesterol-lowering drugs and therapeutic interventions for atherosclerosis. PCSK9 could accelerate atherosclerosis through mechanisms beyond the degradation of the hepatic low-density lipoprotein receptor. Several clinical studies suggested that PCSK9 is involved in atherosclerotic inflammation. Accordingly, this study aimed to explore the role of PCSK9 in vascular inflammation that promotes atherosclerotic progression...
April 29, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28534119/splenic-ly6c-hi-monocytes-contribute-to-adverse-late-post-ischemic-left-ventricular-remodeling-in-heme-oxygenase-1-deficient-mice
#12
Mateusz Tomczyk, Izabela Kraszewska, Krzysztof Szade, Karolina Bukowska-Strakova, Marco Meloni, Alicja Jozkowicz, Jozef Dulak, Agnieszka Jazwa
Heme oxygenase-1 (Hmox1) is a stress-inducible protein crucial in heme catabolism. The end products of its enzymatic activity possess anti-oxidative, anti-apoptotic and anti-inflammatory properties. Cardioprotective effects of Hmox1 were demonstrated in experimental models of myocardial infarction (MI). Nevertheless, its importance in timely resolution of post-ischemic inflammation remains incompletely understood. The aim of this study was to determine the role of Hmox1 in the monocyte/macrophage-mediated cardiac remodeling in a mouse model of MI...
July 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28527399/the-effects-of-melamine-with-or-without-cyanuric-acid-on-immune-function-in-ovalbumin-sensitized-mice
#13
Rong H Yin, Qiao Dong, Hua S Li, Jing Yuan, Xi T Li, Rong L Yin, Wen Li, Wen C Wang, Bao S Liu, Xiao H Han, Ren F Wang, Xin Wang, Wen L Bai
Melamine is commonly used in the chemical industry, and it has been found to exist on food processing equipment and utensils. Previous investigations suggested that melamine alone or its combination with cyanuric acid appears to be toxic to immune system in animals. The objective of this study is to investigate the potential effects of melamine with or without cyanuric acid on immune function in ovalbumin- sensitized mice. Our data indicated that melamine-related administration caused a significant decreasing in the content of IL-4 in mice in comparison to negative control group...
May 13, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28527302/aortic-adventitial-fibroblast-sensitivity-to-mitogen-activated-protein-kinase-inhibitors-depends-on-substrate-stiffness
#14
Rebecca A Scott, Prathamesh M Kharkar, Kristi L Kiick, Robert E Akins
Adventitial fibroblasts (AFs) are key determinants of arterial function and critical mediators of arterial disease progression. The effects of altered stiffness, particularly those observed across individuals during normal vascular function, and the mechanisms by which AFs respond to altered stiffness, are not well understood. To study the effects of matrix stiffness on AF phenotype, cytokine production, and the regulatory pathways utilized to interpret basic cell-matrix interactions, human aortic AFs were grown in 5%, 7...
May 10, 2017: Biomaterials
https://www.readbyqxmd.com/read/28524086/dietary-green-pea-protects-against-dss-induced-colitis-in-mice-challenged-with-high-fat-diet
#15
Shima Bibi, Luís Fernando de Sousa Moraes, Noelle Lebow, Mei-Jun Zhu
Obesity is a risk factor for developing inflammatory bowel disease. Pea is unique with its high content of dietary fiber, polyphenolics, and glycoproteins, all of which are known to be health beneficial. We aimed to investigate the impact of green pea (GP) supplementation on the susceptibility of high-fat diet (HFD)-fed mice to dextran sulfate sodium (DSS)-induced colitis. Six-week-old C57BL/6J female mice were fed a 45% HFD or HFD supplemented with 10% GP. After 7-week dietary supplementation, colitis was induced by adding 2...
May 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28521869/high-fgf21-levels-are-associated-with-altered-bone-homeostasis-in-hiv-1-infected-patients
#16
José M Gallego-Escuredo, Maria Karuna Lamarca, Joan Villarroya, Joan C Domingo, Ma Gracia Mateo, Ma Del Mar Gutierrez, Francesc Vidal, Francesc Villarroya, Pere Domingo, Marta Giralt
BACKGROUND: Fibroblast growth factor-21 (FGF21) has emerged as an important regulator of glucose, lipid, and body weight homeostasis. However, recent experimental studies have reported that increased FGF21 levels may lead to bone loss. OBJECTIVE: To assess the relationship of serum FGF21 levels and altered bone homeostasis in HIV-1-infected patients. DESIGN: Cross-sectional study of 137 HIV-1-infected patients and 35 healthy controls conducted at the Hospital de la Santa Creu i Sant Pau, Barcelona...
June 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28521173/thymoquinone-ameliorates-renal-damage-in-unilateral-ureteral-obstruction-in-rats
#17
Sara Hosseinian, Abolfazl Khajavi Rad, Alireza Ebrahimzadeh Bideskan, Mohammad Soukhtanloo, Hamidreza Sadeghnia, Mohammad Naser Shafei, Fatemeh Motejadded, Reza Mohebbati, Samira Shahraki, Farimah Beheshti
BACKGROUND: It is well established that renin-angiotensin system (RAS) play a central role in pathophysiology of renal damage following unilateral ureteral obstruction (UUO). The present study investigated the effects of thymoquinone and RAS blockade on renal tissue damage and renal expression of angiotensin II after UUO in rats. METHODS: Forty male rats were divided to five groups: Sham-operated group, UUO group and rats with UUO treated with losartan, captopril and thymoquinone...
March 14, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28514870/biomarker-profile-of-sepsis-associated-coagulopathy-using-biochip-assay-for-inflammatory-cytokines
#18
Amanda Walborn, Debra Hoppensteadt, Daneyal Syed, Michael Mosier, Jawed Fareed
Disseminated intravascular coagulation (DIC) is a major pathophysiological mechanism of sepsis and greatly increases the risk of death in septic patients. Disseminated intravascular coagulation is a complex physiological phenomenon that involves inappropriate activation of coagulation, inflammation, and endothelial processes. The purpose of this study was to analyze the levels of inflammatory cytokines in the plasma of patients with DIC in order to compare the measured levels with those from healthy individuals, draw correlations, and provide a basis for further biomarker panel development...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28508193/neutrophil-depletion-improves-diet-induced-non-alcoholic-fatty-liver-disease-in-mice
#19
Rongying Ou, Jia Liu, Mingfen Lv, Jingying Wang, Jinmeng Wang, Li Zhu, Liang Zhao, Yunsheng Xu
PURPOSE: Non-alcoholic fatty liver disease is highly associated with morbidity and mortality in population. Although studies have already demonstrated that the immune response plays a pivotal role in the development of non-alcoholic fatty liver disease, the comprehensive regulation is unclear. Therefore, present study was carried out to investigate the non-alcoholic fatty liver disease development under neutrophil depletion. METHODS: To achieve the aim of the study, C57BL/6 J mice were fed with high fat diet for 6 weeks before treated with neutrophil deplete antibody 1A8 or isotype control (200 μg/ mouse every week) for another 4 weeks...
April 6, 2017: Endocrine
https://www.readbyqxmd.com/read/28504607/innate-inflammatory-gene-expression-profiling-in-potential-brain-dead-donors-detailed-investigation-of-the-effect-of-common-corticosteroid-therapy
#20
Reza Gholamnezhadjafari, Nader Tajik, Reza Falak, Reza Aflatoonian, Sanaz Dehghan, Abbas Rezaei
Our study aimed to assess the influence of common methylprednisolone therapy on innate inflammatory factors in potential brain-dead organ donors (BDDs). The study groups consisted of 50 potential BDDs who received 15 mg/kg/d methylprednisolone and 25 live organ donors (LDs) as control group. Innate immunity gene expression profiling was performed by RT-PCR array. Soluble serum cytokines and chemokines, complement components, heat shock protein 70 (HSP70) and high mobility group box-1 (HMGB1) were measured by ELISA...
January 1, 2017: Innate Immunity
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