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Inflammation, atherosclerosis

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https://www.readbyqxmd.com/read/28448973/downregulations-of-cd36-and-calpain-1-inflammation-and-atherosclerosis-by-simvastatin-in-apolipoprotein-e-knockout-mice
#1
Meihui Yin, Qianqian Liu, Lan Yu, Yueyan Yang, Meili Lu, Hongxin Wang, Duosheng Luo, Xianglu Rong, Futian Tang, Jiao Guo
BACKGROUND: In the previous in vitro study, we found that simvastatin decreased the protein expression of CD36, the scavenger receptor, and calpain-1, the Ca2+-sensitive cysteine protease, in oxidized low-density lipoprotein (oxLDL)-treated macrophages. In this in vivo study, we investigated whether simvastatin downregulates the expression of CD36 and calpain-1 and inhibits the inflammation and atherosclerosis in apolipoprotein E knockout (ApoE KO) mice. METHODS: Twenty male 6-week-old ApoE KO mice were divided into 2 groups: the ApoE KO group and the ApoE KO + simvastatin (ApoE KO + Sim) group...
April 28, 2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28447981/isolation-characterization-and-purification-of-macrophages-from-tissues-affected-by-obesity-related-inflammation
#2
Joselyn N Allen, Adwitia Dey, Ruth Nissly, James Fraser, Shan Yu, Gayathri Balandaram, Jeffrey M Peters, Pamela A Hankey-Giblin
Obesity promotes a chronic inflammatory state that is largely mediated by tissue-resident macrophages as well as monocyte-derived macrophages. Diet-induced obesity (DIO) is a valuable model in studying the role of macrophage heterogeneity; however, adequate macrophage isolations are difficult to acquire from inflamed tissues. In this protocol, we outline the isolation steps and necessary troubleshooting guidelines derived from our studies for obtaining a suitable population of tissue-resident macrophages from mice following 18 weeks of high-fat (HFD) or high-fat/high-cholesterol (HFHCD) diet intervention...
April 3, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28445787/adipose-derived-stem-cells-were-impaired-in-restricting-cd4-t-cell-proliferation-and-polarization-in-type-2-diabetic-apoe-mouse
#3
Ming-Hao Liu, Ya Li, Lu Han, Yao-Yuan Zhang, Di Wang, Zhi-Hao Wang, Hui-Min Zhou, Ming Song, Yi-Hui Li, Meng-Xiong Tang, Wei Zhang, Ming Zhong
BACKGROUND: Atherosclerosis (AS) is the most common and serious complication of type 2 diabetes mellitus (T2DM) and is accelerated via chronic systemic inflammation rather than hyperglycemia. Adipose tissue is the major source of systemic inflammation in abnormal metabolic state. Pro-inflammatory CD4(+)T cells play pivotal role in promoting adipose inflammation. Adipose-derived stem cells (ADSCs) for fat regeneration have potent ability of immunosuppression and restricting CD4(+)T cells as well...
April 23, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28445509/functional-genetic-variants-within-the-sirt2-gene-promoter-in-acute-myocardial-infarction
#4
Wentao Yang, Feng Gao, Pei Zhang, Shuchao Pang, Yinghua Cui, Lixin Liu, Guanghe Wei, Bo Yan
Coronary artery disease (CAD), including acute myocardial infarction (AMI) is the complication of atherosclerosis. Recently, genome-wide association studies have identified a large number of CAD-related genetic variants. However, only 10% of CAD cases could be explained. Low frequent and rare genetic variants have been recently proposed to be main causes for CAD. SIRT2 is a member of sirtuin family, NAD(+)-dependent class III deacetylases. SIRT2 is involved in genomic stability, metabolism, inflammation, oxidative stress and autophagy, as well as in platelet function...
2017: PloS One
https://www.readbyqxmd.com/read/28444107/apelin-13-inhibits-lipoprotein-lipase-expression-via-the-apj-pkc%C3%AE-mir-361-5p-signaling-pathway-in-thp-1-macrophage-derived-foam-cells
#5
Xin Zhang, Qiong Ye, Duo Gong, Yuan Lv, Haipeng Cheng, Chong Huang, Lingyan Chen, Zhenwang Zhao, Liang Li, Xie Wei, Min Zhang, Xiaodan Xia, Xiaohua Yu, Xilong Zheng, Shuzhi Wang, Zongbao Wang, Chaoke Tang
Atherosclerotic lesions are characterized by the accumulation of abundant lipids and chronic inflammation. Previous researches have indicated that macrophage-derived lipoprotein lipase (LPL) promotes atherosclerosis progression by accelerating lipid accumulation and pro-inflammatory cytokine secretion. Although apelin-13 has been regarded as an atheroprotective factor, it remains unclear whether it can regulate the expression of LPL. The aim of this study was to explore the effects of apelin-13 on the expression of LPL and the underlying mechanism in THP-1 macrophage-derived foam cells...
April 21, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28442421/distinct-roles-for-dietary-lipids-and-porphyromonas-gingivalis-infection-on-atherosclerosis-progression-and-the-gut-microbiota
#6
Carolyn D Kramer, Alexandra M Simas, Xianbao He, Robin R Ingalls, Ellen O Weinberg, Caroline Attardo Genco
Mounting evidence in humans supports an etiological role for the microbiota in inflammatory atherosclerosis. Atherosclerosis is a progressive disease characterized by accumulation of inflammatory cells and lipids in vascular tissue. While retention of lipoprotein into the sub-endothelial vascular layer is believed to be the initiating stimulus leading to the development of atherosclerosis, activation of multiple pathways related to vascular inflammation and endothelial dysfunction sustain the process by stimulating recruitment of leukocytes and immune cells into the sub-endothelial layer...
April 22, 2017: Anaerobe
https://www.readbyqxmd.com/read/28438491/immunomodulatory-functions-of-neuronal-guidance-proteins
#7
REVIEW
Valbona Mirakaj, Peter Rosenberger
Neuronal guidance proteins (NGPs) were originally identified for their role during the embryonic development of the nervous system. Recent years have seen the discovery of NGP functions during immune responses. In this context, NGPs were demonstrated to control leukocyte migration and the release of cytokines during conditions of acute inflammation, such as lung injury or sepsis. However, NGPs also display potent actions in the resolution of inflammation, chronic inflammatory conditions, the development of atherosclerosis, and during ischemia followed by reperfusion...
April 21, 2017: Trends in Immunology
https://www.readbyqxmd.com/read/28436142/cortisol-is-associated-with-low-frequency-of-interleukin-10-producing-b-cells-in-patients-with-atherosclerosis
#8
Yizhong Huo, Yan Chu, Lixin Guo, Linli Liu, Xiaojun Xia, Tierui Wang
It is accepted that inflammation plays a critical role in the development of atherosclerosis; the pathogenesis is not clear. B-cell-produced interleukin (IL) 10 is an immune regulatory cytokine that can inhibit immune inflammation. This study tests a hypothesis that a psychological stress hormone, cortisol, suppresses IL-10 expression in peripheral B cells of patients with atherosclerosis. Peripheral blood samples were collected from patients with coronary artery atherosclerosis. B cells were isolated from the blood samples to be analyzed for the expression of IL-10 and micro RNA (miR) 98 by real-time polymerase chain reaction...
April 2017: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/28435982/-changes-in-biological-functions-of-high-density-lipoprotein-after-abnormal-modification
#9
Hang Qu, Yang Yu, Shu-Cun Qin, Guo-Hua Song
High-density lipoprotein (HDL) is composed of apolipoproteins, lipids and functional proteins. HDL protects against atherosclerosis (AS) by reverse cholesterol transport (RCT). HDL inhibits the lipid oxidation, inflammation and restores endothelial function. During systemic inflammation or metabolic disorders, HDL can be modified abnormally and converted to a dysfunctional type, which results in the loss of anti-inflammatory factors including apolipoprotein A-I (apoA-I), paraoxonase (PON) and platelet activating factor acetylhydrolase (PAF-AH), and gains of pro-inflammatory factors such as serum amyloid A (SAA), triglyceride (TG) and oxidative lipid...
April 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28432115/effects-of-exercise-on-vascular-function-structure-and-health-in-humans
#10
Daniel J Green, Kurt J Smith
Physical activity has profound impacts on the vasculature in humans. Acute exercise induces immediate changes in artery function, whereas repeated episodic bouts of exercise induce chronic functional adaptation and, ultimately, structural arterial remodeling. The nature of these changes in function and structure are dependent on the characteristics of the training load and may be modulated by other factors such as exercise-induced inflammation and oxidative stress. The clinical implications of these physiological adaptations are profound...
April 21, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28431986/ninj2-a-novel-regulator-of-endothelial-inflammation-and-activation
#11
Jingjing Wang, Jingjing Fa, Pengyun Wang, Xinzhen Jia, Huixin Peng, Jing Chen, Yifan Wang, Chenhui Wang, Qiuyun Chen, Xin Tu, Qing K Wang, Chengqi Xu
Previous genetic studies suggested that variants in NINJ2 (encode ninjurin2) confer risk to ischemic stroke or large artery atherosclerotic stroke. However, the underlying mechanisms of NINJ2 in ischemic stroke or atherosclerosis are still unknown. In this study, we hypothesized that NINJ2 may play a role in endothelial inflammation and activation, and regulate the process of atherosclerosis. Here, we demonstrated that NINJ2 can regulate the expression of a panel of genes that are associated with inflammation and atherosclerosis (e...
April 18, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28430714/ultrasound-molecular-imaging-of-inflammation-in-mouse-abdominal-aorta
#12
Shiying Wang, Sunil Unnikrishnan, Elizabeth B Herbst, Alexander L Klibanov, Frank William Mauldin, John A Hossack
OBJECTIVES: The aim of this study was to demonstrate a new clinically translatable ultrasound molecular imaging approach, modulated acoustic radiation force-based imaging, which is capable of rapid and reliable detection of inflammation as validated in mouse abdominal aorta. MATERIALS AND METHODS: Animal studies were approved by the Institutional Animal Care and Use Committee at the University of Virginia. C57BL/6 mice stimulated with tumor necrosis factor α, or fed with a high-fat diet, were used as inflammation (MInflammation) and diet-induced obesity (DIO) (MDIO) models, respectively...
April 20, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28429349/association-between-the-severity-of-newly-diagnosed-obstructive-sleep-apnea-and-subclinical-carotid-atherosclerosis-in-patients-without-overt-cardiovascular-disease
#13
K Theodoropoulos, D Lykouras, K Karkoulias, D Damania, K Leou, O Lagiou, O A Meelu, A Rigopoulou, G D Dangas, G Hahalis, K Spiropoulos, I Starakis
OBJECTIVE: Obstructive Sleep Apnea (OSA) has been associated with both subclinical and accelerated atherosclerosis; however, it still remains unknown whether this association is unique or is mediated by the higher burden of co-existing cardio-metabolic disorders frequently seen in patients with OSA. PATIENTS AND METHODS: A total of 40 subjects without clinically diagnosed cardiovascular disease (CVD) referred for polysomnography test were included in the study. Subjects with apnea/hypopnea index (AHI > 15/h) were classified as moderate/severe OSA...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28429343/post-prandial-effects-of-hazelnut-enriched-high-fat-meal-on-ldl-oxidative-status-oxidative-and-inflammatory-gene-expression-of-healthy-subjects-a-randomized-trial
#14
L Di Renzo, G Merra, R Botta, P Gualtieri, A Manzo, M A Perrone, M Mazza, S Cascapera, A De Lorenzo
OBJECTIVE: Postprandial oxidative stress is characterized by an increased susceptibility of the organism towards oxidative damage after consumption of a meal rich in lipids and/or carbohydrates. Micronutrients modulate the immune system and exert a protective action by reducing low-density lipoproteins oxidation (ox-LDL) via induction of antioxidant enzymes. SUBJECTS AND METHODS: The clinical study was a randomized and cross-over trial, conducted through the CONSORT flowchart...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28429221/associations-of-osteocalcin-osteoprotegerin-and-calcitonin-with-inflammation-biomarkers-in-atherosclerotic-plaques-of-coronary-arteries
#15
Ya V Polonskaya, E V Kashtanova, I S Murashov, A M Volkov, A V Kurguzov, A M Chernyavsky, Yu I Ragino
We studied associations of osteocalcin, osteoprotegerin, and calcitonin with markers of inflammation in atherosclerotic plaques in coronary arteries and assessed the influence of these biomolecules on calcification of atherosclerotic plaques. The initial stage of calcification of atherosclerotic plaques is characterized by activation of inflammatory processes, which is seen from increased levels of proinflammatory biomarkers (IL-6, IL 8, TNF-α, and IL-1β). Progressive calcification of atherosclerotic plaques is accompanied by insignificant accumulation of calcitonin and osteoprotegerin...
April 21, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28428965/natural-killer-cells-in-the-orchestration-of-chronic-inflammatory-diseases
#16
REVIEW
Luca Parisi, Barbara Bassani, Marco Tremolati, Elisabetta Gini, Giampietro Farronato, Antonino Bruno
Inflammation, altered immune cell phenotype, and functions are key features shared by diverse chronic diseases, including cardiovascular, neurodegenerative diseases, diabetes, metabolic syndrome, and cancer. Natural killer cells are innate lymphoid cells primarily involved in the immune system response to non-self-components but their plasticity is largely influenced by the pathological microenvironment. Altered NK phenotype and function have been reported in several pathological conditions, basically related to impaired or enhanced toxicity...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28428450/independent-and-combined-effects-of-serum-albumin-and-c-reactive-protein-on-long-term-outcomes-of-patients-undergoing-percutaneous-coronary-intervention
#17
Hideki Wada, Tomotaka Dohi, Katsumi Miyauchi, Shinichiro Doi, Ryo Naito, Hirokazu Konishi, Shuta Tsuboi, Manabu Ogita, Takatoshi Kasai, Shinya Okazaki, Kikuo Isoda, Satoru Suwa, Hiroyuki Daida
BACKGROUND: Both inflammation and malnutrition have been reported to be closely linked to atherosclerosis, especially in patients with chronic kidney disease (CKD). The combined effects of serum albumin and C-reactive protein (CRP) on clinical outcomes after percutaneous coronary intervention (PCI) were investigated.Methods and Results:A total of 2,164 all-comer patients with coronary artery disease who underwent their first PCI and had data available for preprocedural serum albumin and hs-CRP levels between 2000 and 2011 were studied...
April 19, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28427390/advanced-glycation-end-products-decreases-expression-of-endothelial-nitric-oxide-synthase-through-oxidative-stress-in-human-coronary-artery-endothelial-cells
#18
Xiaomei Ren, Liqun Ren, Qin Wei, Hua Shao, Long Chen, Naifeng Liu
BACKGROUND: Advanced glycation end-products (AGEs) are elevated under diabetic conditions and associated with insulin resistance, endothelial dysfunction and vascular inflammation in humans. It has been demonstrated that AGEs evoke oxidative and inflammatory reactions in endothelial cells through the interaction with a receptor for AGEs (RAGE). Here, we aimed to identify the cellular mechanisms by which AGEs exacerbate the endothelial dysfunction in human coronary artery endothelial cells (HCAECs)...
April 20, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28425862/the-impact-of-il-17-in-atherosclerosis
#19
Xinjie Lu
Atherosclerosis is a chronic vascular disease in which atherosclerotic plaques develop in the arterial wall. It is believed that inflammation plays a major role in atherosclerotic formation and progression. Thus, atherosclerosis can be considered as an inflammatory disease of the arterial vessel. Mouse model demonstrated that T and B cell deficiency reduces the atherosclerotic burden in the formation of an atherosclerotic lesion. CD4+ T helper cells (Th), such as Th1 cells known being the major CD4+ T cell subtype found in mouse models of atherogenesis, increase plaque formation caused by oxLDL...
April 19, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28423226/rvx-208-a-novel-bet-protein-inhibitor-role-as-an-inducer-of-apo-a-i-hdl-and-beyond
#20
Gopal C Ghosh, Rajarshi Bhadra, Raktim K Ghosh, Kinjal Banerjee, Anjan Gupta
Low density cholesterol (LDL) has been the prime target of currently available lipid-lowering therapies although current research is expanding the focus beyond LDL lowering and has included high density cholesterol (HDL) also as the target. Bromo and extra-terminal (BET) proteins are implicated in the regulation of transcription of several regulatory genes and regulation of pro-inflammatory pathways. As atherosclerosis is an inflammatory pathway and studies showed that BET inhibition has a role in inhibiting inflammation, the concept of BET inhibition came in the field of atherosclerosis...
April 19, 2017: Cardiovascular Therapeutics
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