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oxidized low density lipoprotein

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https://www.readbyqxmd.com/read/28930823/nonalcoholic-fatty-liver-was-associated-with-asymptomatic-gallstones-in-a-chinese-population
#1
Qiao-Hua Qiao, Wen-Hua Zhu, Yun-Xian Yu, Fei-Fei Huang, Li-Ying Chen
The aim of this study was to determine the association between nonalcoholic fatty liver disease (NAFLD) and asymptomatic gallstones in a Chinese population.The study had a cross-sectional design and enrolled 7583 subjects who visited the physical check-up center at Sir Run Run Shaw Hospital between 2009 and 2011. Colorimetric methods were used to measure the levels of cholesterol, high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C), whereas fasting plasma glucose (FPG) level was measured using a dextrose-oxidizing enzyme method...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28930596/modified-low-density-lipoproteins-as-biomarkers-in-diabetes-and-metabolic-syndrome
#2
Andrea Rivas-Urbina, Sonia Benitez, Antonio Perez, Jose Luis Sanchez-Quesada
Cardiovascular disease of atherosclerotic origin is the main cause of death in diabetes mellitus and metabolic syndrome. One of the mechanisms involved in such increased risk is the high incidence of lipoprotein modification in these pathologies. Increased glycosylation, oxidative stress or high non-esterified fatty acid levels in blood, among other factors, promote the modification and subsequent alteration of the properties of lipoproteins. Since the modification of low-density lipoprotein (LDL) is the triggering factor in the development of atherosclerosis, considerable research has been focused on the quantification of modified LDLs in blood to be used as biomarkers of cardiovascular risk...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28930587/prenylcysteine-oxidase-1-a-pro-oxidant-enzyme-of-low-density-lipoproteins
#3
Luis V Herrera-Marcos, Jose M Lou-Bonafonte, Maria V Martinez-Gracia, Carmen Arnal, María A Navarro, Jesus Osada
Elevated levels of low density lipoproteins (LDLs) cause atherosclerotic disease, and proteomic analyses have found that these lipoproteins are endowed with prenylcysteine lyase. This systematic review summarizes current understanding of this enzyme, now known as prenylcysteine oxidase 1 (PCYOX1), which hydrolyzes the thioether bond of prenylcysteines in the final step in the degradation of prenylated proteins, releasing hydrogen peroxide, cysteine and the isoprenoid aldehyde. Despite the high variability of the PCYOX1 gene, no polymorphism has yet been associated with any disease...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28930153/selective-hdl-raising-human-apo-a-i-gene-therapy-counteracts-cardiac-hypertrophy-reduces-myocardial-fibrosis-and-improves-cardiac-function-in-mice-with-chronic-pressure-overload
#4
Ruhul Amin, Ilayaraja Muthuramu, Joseph Pierre Aboumsallem, Mudit Mishra, Frank Jacobs, Bart De Geest
Epidemiological studies support an independent inverse association between high-density lipoprotein (HDL) cholesterol levels and heart failure incidence. The effect of selective HDL-raising adeno-associated viral serotype 8-human apolipoprotein (apo) A-I (AAV8-A-I) gene transfer on cardiac remodeling induced by transverse aortic constriction (TAC) was evaluated in C57BL/6 low-density lipoprotein receptor-deficient mice. Septal wall thickness and cardiomyocyte cross-sectional area were reduced by 16.5% (p < 0...
September 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28925164/-effects-of-icariin-on-proliferation-of-vascular-smooth-muscle-cell-induced-by-ox-ldl-via-impacting-mapk-signaling-pathway
#5
Yan-Wu Hu, Hai-Tao Li, Kai Liu, Meng-Tong Yan, Yang Zhang, Li-Qun Ren
This paper was aimed to study the effects of icariin (ICA) on the proliferation of vascular smooth muscle cell (VSMC) induced by oxidized low density lipoprotein (ox-LDL), and the molecular mechanism of the expression of proliferating cell nuclear antigen (PCNA) and MAPK signaling pathway. In this study, VSMC was induced by ox-LDL (50 mg•L⁻¹),the effect of ICA on the proliferation of VSMC was detected by MTT assay, Western blot and Real-time PCR. The results showed that after stimulation of ox-LDL, the proliferation activity of VSMC was increased, S phase, G₂/M phase cells were increased, G₀/G₁ phase cells were decreased, PCNA protein expression was enhanced; ICA (40, 20, 10 μmol•L⁻¹) could effectively inhibit ox-LDL-induced VSMC proliferation, S phase and G₂/M phase cells were decreased, the percentage of cells in G₀/G₁ phase were increased, PCNA expression was decreased, p38MAPK and ERK1/2 activation were inhibited...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28923438/d-limonene-ameliorates-diabetes-and-its-complications-in-streptozotocin-induced-diabetic-rats
#6
Merve Bacanli, Hatice Gül Anlar, Sevtap Aydin, Tuğbagül Çal, Nuray Ari, Ülkü Ündeğer Bucurgat, A Ahmet Başaran, Nurşen Başaran
It is known that diabetes causes some complications including alterations in lipid profile, hepatic enzyme levels but also it causes oxidative stress. Limonene, a major component of Citrus oils, has important health beneficial effects in lowering the level of oxidative stress due to its antioxidant activity. The aim of this study was to investigate the effects of D-limonene on streptozotocin (STZ)-induced diabetes in Wistar albino rats. For this purpose, DNA damage was evaluated by alkaline comet assay. Changes in the activities of catalase (CAT), superoxide dismutase (SOD), glutathione reductase (GR) and glutathione peroxidase (GSHPx) and the levels of 8-hydroxy-2'-deoxyguanosine (8-OHdG), total glutathione (GSH), malondialdehyde (MDA), insulin, total bilirubin and BCA protein, alanine aminotransferase (ALT), aspartate aminotransferase (AST) and gamma-glutamyl transferase (GGT), high density lipoprotein (HDL), low density lipoprotein (LDL), total cholesterol and triglyceride were also evaluated...
September 15, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28922099/the-effects-of-probiotic-supplementation-on-gene-expression-related-to-inflammation-insulin-and-lipids-in-patients-with-multiple-sclerosis-a-randomized-double-blind-placebo-controlled-trial
#7
Omid Reza Tamtaji, Ebrahim Kouchaki, Mahmoud Salami, Esmat Aghadavod, Elmira Akbari, Maryam Tajabadi-Ebrahimi, Zatollah Asemi
BACKGROUND: Limited data are available assessing the effects of probiotic supplementation on gene expression related to inflammation, insulin, and lipids in patients with multiple sclerosis (MS). OBJECTIVES: The current study was conducted to assess the effects of probiotic supplementation on gene expression related to inflammation, insulin, and lipids in patients with MS. METHODS: This randomized, double-blind, placebo-controlled clinical trial was performed among 40 patients with MS...
September 18, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28921768/microrna-326-3p-ameliorates-high-glucose-and-ox-ldl-ic-induced-fibrotic-injury-in-renal-mesangial-cells-by-targeting-fc%C3%AE-riii
#8
Yiting Wang, Rui Zhang, Junlin Zhang, Fang Liu
AIM: To identify the regulatory relationship between miR-326-3p and FcγRIII, and to explore the involvement of miR-326-3p/FcγRIII/TGF-β/Smad signaling pathway in fibrotic injury, which was induced by the high glucose (HG) and oxidized low density lipoprotein immune complex (ox-LDL-IC) in mouse glomerular mesangial cells (GMCs) METHODS: Dual-luciferase reporter system and real time PCR (RT-PCR) were used to identify FcγRIII as a target gene of miR-326-3p. Lentiviral transduction was utilized to construct different expression of miR-326-3p in GMCs, which were divided into three groups: miR-326-3p mimics group (miR-326-3p group), miR-326-3p inhibitor group (miR-326-3p-inhibit group) and scramble control group (control group)...
September 17, 2017: Nephrology
https://www.readbyqxmd.com/read/28921056/oxidative-stress-in-atherosclerosis
#9
REVIEW
Ajoe John Kattoor, Naga Venkata K Pothineni, Deepak Palagiri, Jawahar L Mehta
PURPOSE OF REVIEW: Atherosclerosis is now considered a chronic inflammatory disease. Oxidative stress induced by generation of excess reactive oxygen species has emerged as a critical, final common mechanism in atherosclerosis. Reactive oxygen species (ROS) are a group of small reactive molecules that play critical roles in the regulation of various cell functions and biological processes. Although essential for vascular homeostasis, uncontrolled production of ROS is implicated in vascular injury...
September 18, 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28915881/high-density-lipoprotein-modulates-osteocalcin-expression-in-circulating-monocytes-a-potential-protective-mechanism-for-cardiovascular-disease-in-type-1-diabetes
#10
Ernesto Maddaloni, Yu Xia, Kyoungmin Park, Stephanie D'Eon, Liane J Tinsley, Ronald St-Louis, Mogher Khamaisi, Qian Li, George L King, Hillary A Keenan
BACKGROUND: Cardiovascular disease (CVD) is a major cause of mortality in type 1 diabetes (T1D). A pro-calcific drift of circulating monocytes has been linked to vascular calcification and is marked by the surface expression of osteocalcin (OCN). We studied OCN+ monocytes in a unique population with ≥50 years of T1D, the 50-Year Joslin Medalists (J50M). METHODS: CD45 bright/CD14+/OCN+ cells in the circulating mononuclear blood cell fraction were quantified by flow cytometry and reported as percentage of CD45 bright cells...
September 16, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28915447/oxidative-stress-induced-modulation-of-platelet-integrin-%C3%AE-2b%C3%AE-3-expression-and-shedding-may-predict-the-risk-of-major-bleeding-in-heart-failure-patients-supported-by-continuous-flow-left-ventricular-assist-devices
#11
Nandan K Mondal, Zengsheng Chen, Jaimin R Trivedi, Erik N Sorensen, Si M Pham, Mark S Slaughter, Bartley P Griffith, Zhongjun J Wu
INTRODUCTION: Oxidative stress and platelet integrin α2bβ3 plays important role in the process of hemostasis and thrombosis. We hypothesized that device-induced patient specific oxidative stress and integrin α2bβ3 shedding may be linked to major bleeding complication (MBC) in heart failure (HF) patients supported by continuous flow left ventricular assist devices (CF-LVADs). MATERIALS AND METHODS: We recruited 47patients implanted with CF-LVADs and 15 healthy volunteers...
September 8, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28913715/oxidized-low-density-lipoprotein-oxldl-affects-load-free-cell-shortening-of-cardiomyocytes-in-a-proprotein-convertase-subtilisin-kexin-9-pcsk9-dependent-way
#12
Klaus-Dieter Schlüter, Annemarie Wolf, Martin Weber, Rolf Schreckenberg, Rainer Schulz
Recent studies have documented that oxidized low-density lipoprotein cholesterol (oxLDL) levels directly impact myocardial structure and function. However, the molecular mechanisms by which oxLDL affects cardiac myocytes are not well established. We addressed the question whether oxLDL modifies load-free cell shortening, a standardized readout of cardiac cellular function, and investigated whether proprotein convertase subtilisin/kexin-9 (PCSK9) is involved on oxLDL-dependent processes. Adult rat ventricular cardiomyocytes were isolated and incubated for 24 h with oxLDL...
September 14, 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/28912752/disparities-in-cardiovascular-disease-and-type-2-diabetes-risk-factors-in-blacks-and-whites-dissecting-racial-paradox-of-metabolic-syndrome
#13
REVIEW
Kwame Osei, Trudy Gaillard
Cardiovascular diseases (CVD) remain as the leading cause of mortality in the western world and have become a major health threat for developing countries. There are several risk factors that account for the CVD and the associated mortality. These include genetics, type 2 diabetes (T2DM), obesity, physical inactivity, hypertension, and abnormal lipids and lipoproteins. The constellation of these risk factors has been termed metabolic syndrome (MetS). MetS varies among racial and ethnic populations. Thus, race and ethnicity account for some of the differences in the MetS and the associated CVD and T2DM...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28904868/high-density-lipoprotein-protects-cardiomyocytes-from-oxidative-stress-via-the-pi3k-mtor-signaling-pathway
#14
Manabu Nagao, Ryuji Toh, Yasuhiro Irino, Hideto Nakajima, Toshihiko Oshita, Shigeyasu Tsuda, Tetsuya Hara, Masakazu Shinohara, Tatsuro Ishida, Ken-Ichi Hirata
Low levels of plasma high-density lipoprotein (HDL) cholesterol are associated with an increased risk of heart failure, regardless of the presence or absence of coronary artery disease. However, the direct effects of HDL on failing myocardium have not been fully elucidated. We found that HDL treatment resulted in improved cell viability in H9c2 cardiomyocytes under oxidative stress. This cardioprotective effect of HDL was regulated via the phosphatidylinositol 3-kinase (PI3K)/mammalian target of rapamycin (mTOR) pathway...
September 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28904866/imm-h007-a-new-therapeutic-candidate-for-nonalcoholic-fatty-liver-disease-improves-hepatic-steatosis-in-hamsters-fed-a-high-fat-diet
#15
Huijie Shi, Qingchun Wang, Liu Yang, Shouxia Xie, Haibo Zhu
Nonalcoholic fatty liver disease (NAFLD), the most common chronic liver disease in humans, is characterized by the accumulation of triacylglycerols (TGs) in hepatocytes. We tested whether 2',3',5'-tri-acetyl-N6-(3-hydroxylaniline) adenosine (IMM-H007) can eliminate hepatic steatosis in hamsters fed a high-fat diet (HFD), as a model of NAFLD. Compared with HFD-only controls, IMM-H007 treatment significantly lowered serum levels of TG, total cholesterol, and free fatty acids (FFAs) in hamsters fed the HFD, with a prominent decrease in levels of serum transaminases and fasting insulin, without affecting fasting glucose levels...
September 2017: FEBS Open Bio
https://www.readbyqxmd.com/read/28904738/total-oxidant-and-antioxidant-status-in-prepubertal-children-with-obesity
#16
Grażyna Rowicka, Hanna Dyląg, Jadwiga Ambroszkiewicz, Agnieszka Riahi, Halina Weker, Magdalena Chełchowska
AIMS: Obesity is accompanied by the formation of oxygen free radicals, whose intensified activity without effective defense mechanisms can lead to oxidative stress and related complications. We evaluated the presence of oxidative stress in obese prepubertal children. METHODS: The study included 83 healthy children aged 2-10 years (62 with obesity and 21 nonobese controls). Total oxidant capacity (TOC), total antioxidant capacity (TAC), oxidized low-density lipoprotein (ox-LDL), lipid parameters, glucose, and C-reactive protein (CRP) were measured in serum...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28902644/serum-oxidized-low-density-lipoprotein-level-as-a-marker-of-oxidative-stress-in-patients-undergoing-hyperbaric-oxygen-therapy
#17
Kudret Keskin, Hakan Kilci, Gökhan Aksan, Gökhan Çetinkal, Süleyman Sezai Yıldız, Füsun Kocaman Türk, Gülsüm Bingöl
OBJECTIVE: Oxidative stress (OS) is involved in the pathogenesis of atherosclerosis. Hyperbaric oxygen therapy (HBOT), in which 100% oxygen is inhaled under hyperbaric pressure, may create OS. Therefore, the aim of this research was to measure the serum oxidized low-density lipoprotein (oxLDL) level in patients undergoing HBOT. METHODS: Twenty-nine patients who underwent HBOT to treat various diseases were enrolled in this study. The serum oxLDL level was measured at the beginning of the first and after the 10th therapy session...
September 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28899395/role-of-rab5-in-the-formation-of-macrophage-derived-foam-cell
#18
Lokwern Chan, Jin Hong, Junjie Pan, Jian Li, Zhichao Wen, Haiming Shi, Jianping Ding, Xinping Luo
BACKGROUND: Foam cells play a key role in the occurrence and pathogenesis of atherosclerosis. Its formation starts with the ingestion of oxidized low-density lipoprotein (oxLDL). The process is associated with Ras related protein in brain 5 (Rab5) which plays a critical role in regulating endocytosis and early endosomal trafficking. Base on this, we presumed that Rab5 might participate in the maturation of foam cell. The aim of this study is to investigate the effect of Rab5 on macrophage cholesterol during the evolvement of macrophage when induced by oxLDL to the formation of foam cell...
September 12, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28899001/a-role-for-autoantibodies-in-atherogenesis
#19
Rosebella A Iseme, Mark McEvoy, Brian Kelly, Linda Agnew, Frederick R Walker, Tonelle Handley, Christopher Oldmeadow, John Attia, Michael Boyle
An increased risk of cardiovascular disease (CVD) has long been recognized amongst people with autoimmune disease. It has been unclear whether this is due mainly to the ensuing treatment, particularly steroids, or whether some of this risk is due to the autoimmune process itself with subsequent inflammation. Indeed, a large body of evidence supports a role for chronic inflammation in atherogenesis, and autoantibodies have been identified as mediators in this complex inflammatory environment. Our aim is to carry out a systematic review of existing literature in order to formally establish the strength of the association between autoantibodies and atherosclerosis, amongst individuals without clinical autoimmune disease...
August 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28891115/deficiency-of-ccaat-enhancer-binding-protein-homologous-protein-chop-prevents-diet-induced-aortic-valve-calcification-in%C3%A2-vivo
#20
Zhejun Cai, Baoqing Liu, Jia Wei, Zurong Fu, Yidong Wang, Yaping Wang, Jian Shen, Liangliang Jia, Shengan Su, Xiaoya Wang, Xiaoping Lin, Han Chen, Fei Li, Jian'an Wang, Meixiang Xiang
Aortic valve (AoV) calcification is common in aged populations. Its subsequent aortic stenosis has been linked with increased morbidity, but still has no effective pharmacological intervention. Our previous data show endoplasmic reticulum (ER) stress is involved in AoV calcification. Here, we investigated whether deficiency of ER stress downstream effector CCAAT/enhancer-binding protein homology protein (CHOP) may prevent development of AoV calcification. AoV calcification was evaluated in Apoe(-/-) mice (n = 10) or in mice with dual deficiencies of ApoE and CHOP (Apoe(-/-) CHOP(-/-) , n = 10) fed with Western diet for 24 weeks...
September 10, 2017: Aging Cell
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