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oxidized low density lipoprotein

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https://www.readbyqxmd.com/read/28453380/lipids-on-the-second-day-in-ischemic-and-normoxemic-term-neonates
#1
Miljana Z Jovandaric, Tatjana V Nikolic, Svetlana Milenkovi, Biljana Otaševi, Violeta V Bankovic, Petar I Ivanovski, Milos M Jesic
INTRODUCTION: In hypoxic newborns requiring oxygen, lipid peroxidation affects the peripheral blood lipids. OBJECTIVES: Determine the influence of perinatal oxygen therapy for hypoxia on serum lipid concentrations on the second day of life. MATERIALS AND METHODS: Our study included 50 newborns with perinatal hypoxia requiring oxygen and 50 healthy newborns without oxygen therapy. Arterialized capillary blood was taken for categorization of hypoxia (pO2) after birth in both groups...
April 28, 2017: Fetal and Pediatric Pathology
https://www.readbyqxmd.com/read/28453363/a-polyphenol-based-multicomponent-nutraceutical-in-dysmetabolism-and-oxidative-stress-results-from-a-pilot-study
#2
Roberto Corsi, Giovanni Mosti, Attilio Cavezzi, Simone Ugo Urso, Gayla Dimitrova, Elena Fioroni, Roberto Colucci, Valentina Quinzi
To assess short-term efficacy and safety of a multicomponent nutraceutical (MCN) on dysmetabolism and oxidative stress, a pilot prospective observational study was performed on 21 individuals (12 men and 9 women) who took, for 60 days, 2 tablets per day of an MCN based on antioxidants and metabolism regulators: hydroxytyrosol (15 mg), maqui (300 mg), amla (200 mg), monacolin K (10 mg), berberine (245 mg), astaxanthin (0.5 mg), coenzyme Q10 (100 mg), and folic acid (200 mcg). On day 0 (T0) and day 60 (T60), all participants underwent laboratory tests related to lipid profile, carbohydrate metabolism, oxidative stress, and cellular inflammation...
April 28, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28448973/downregulations-of-cd36-and-calpain-1-inflammation-and-atherosclerosis-by-simvastatin-in-apolipoprotein-e-knockout-mice
#3
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/28447736/investigation-of-hypoglycemic-hypolipidemic-and-anti%C3%A2-nephritic-activities-of-paecilomyces-tenuipesn45-in-diet-streptozotocin%C3%A2-induced-diabetic-rats
#4
Chungang Liu, Xuerui Zeng, Yi Li, Hongli Ma, Jingjing Song, Yuhuan Li, Yulin Zhou, Robert J Lee, Di Wang
Due to its pharmacological activities, Paecilomyces tenuipes has previously been used as a folk medicine in Asia. The primary aim of the present study was to investigate the hypoglycemic, hypolipidemic and anti‑nephritic effects of P. tenuipes N45 aqueous extracts (PTNE) in a high fat diet/streptozotocin‑induced diabetic rat model. The rats were treated with 120 mg/kg of metformin or 0.04, 0.2 or 1.0 g/kg PTNE for 4 weeks. The hypoglycemic activity of PTNE was confirmed by the observation of reduced fasting blood glucose level and by partially normalized oral glucose tolerance...
March 10, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28447714/resveratrol-protects-against-oxidized-low%C3%A2-density-lipoprotein%C3%A2-induced-human-umbilical-vein-endothelial-cell-apoptosis-via-inhibition-of-mitochondrial%C3%A2-derived-oxidative-stress
#5
Yujie Liu, Xizhou Chen, Jie Li
Resveratrol, a natural phytochemical found in grapes and red wine, has been found to possess protective effects against endothelial cell apoptosis and oxidative damage. Oxidized‑low density lipoprotein (ox‑LDL) can induce apoptosis of endothelial cells, which is an important initial event in several cardiovascular diseases. However, the effect of resveratrol on ox‑LDL‑induced apoptosis and oxidative damage, and the possible associated mechanisms remain to be elucidated. In the present study, following exposure to ox‑LDL, human umbilical vein endothelial cells (HUVECs) were treated with or without resveratrol...
March 9, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28444734/highly-electronegative-low-density-lipoprotein-l5-evokes-microglial-activation-and-creates-a-neuroinflammatory-stress-via-toll-like-receptor-4-signaling
#6
Liang-En Yu, Chiou-Lian Lai, Ching-Tien Lee, Jiz-Yuh Wang
Atherogenic risk factors, such as hypercholesterolemia, are associated with increased risk of neurodegeneration, especially Alzheimer's dementia. Human plasma electronegative low-density lipoprotein [LDL(-)], especially L5, may serve as an important contributing factor. L5 promoting an inflammatory action in atherosclerosis has been extensively studied. However, the role of L5 in inducing neuroinflammation remains unknown. Here, we examined the impact of L5 on immune activation and cell viability in cultured BV-2 microglia...
April 26, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28444662/early-mitochondrial-adaptations-in-skeletal-muscle-to-obesity-and-obesity-resistance-differentially-regulated-by-high-fat-diet
#7
Jingyu Sun, Tao Huang, Zhengtang Qi, Songhui You, Jingmei Dong, Chen Zhang, Lili Qin, Yunhe Zhou, Shuzhe Ding
The mechanism for different susceptibilities to obesity after short-term high-fat diet (HFD) feeding is largely unknown. Given the close association between obesity occurrence and mitochondrial dysfunction, the early events in skeletal muscle mitochondrial adaptations between HFD-induced obesity (DIO) and HFD-induced obesity resistant (DIO-R) lean phenotype under excess nutritional environment were explored.ICR/JCL male mice were randomly divided into 2 groups, as follows: low-fat diet (LFD) and HFD groups...
April 25, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28438472/shared-metabolic-and-immune-inflammatory-oxidative-and-nitrosative-stress-pathways-in-the-metabolic-syndrome-and-mood-disorders
#8
REVIEW
Luiz Gustavo Piccoli de Melo, Sandra Odebrecht Vargas Nunes, George Anderson, Heber Odebrecht Vargas, Décio Sabbattini Barbosa, Piotr Galecki, André F Carvalho, Michael Maes
This review examines the shared immune-inflammatory, oxidative and nitrosative stress (IO&NS) and metabolic pathways underpinning metabolic syndrome (MetS), bipolar disorder (BD) and major depressive disorder (MDD). Shared pathways in both MetS and mood disorders are low grade inflammation, including increased levels of pro-inflammatory cytokines and acute phase proteins, increased lipid peroxidation with formation of malondialdehyde and oxidized low density lipoprotein cholesterol (LDL-c), hypernitrosylation, lowered levels of antioxidants, most importantly zinc and paraoxonase (PON1), increased bacterial translocation (leaky gut), increased atherogenic index of plasma and Castelli risk indices; and reduced levels of high-density lipoprotein (HDL-c) cholesterol...
April 21, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28436319/in-vitro-antioxidant-and-in-vivo-hypolipidemic-effects-of-the-king-oyster-culinary-medicinal-mushroom-pleurotus-eryngii-var-ferulae-ddl01-agaricomycetes-in-rats-with-high-fat-diet-induced-fatty-liver-and-hyperlipidemia
#9
Jun-Hui Choi, Dae-Won Kim, Seung Kim, Sung-Jun Kim
We investigated the effect of the culinary-medicinal mushroom Pleurotus eryngii var. ferulae DDL01 on oxidative damage in the liver and brain and a high-fat/high-cholesterol-induced hyperlipidemic model. In in vitro studies, the water extracts of the fruiting bodies showed strong scavenging activities of DPPH (139.46 ± 3.2 μg) and hydroxyl (139.46 ± 3.2 μg) radicals. Moreover, the extracts showed Fe2+ chelating and reducing abilities, as well as a large amount of polyphenols and an inhibitory effect on lipid peroxidation in the liver and brain tissues...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/28434137/cholesterol-hydroperoxide-generation-translocation-and-reductive-turnover-in-biological-systems
#10
Albert W Girotti, Witold Korytowski
Cholesterol is like other unsaturated lipids in being susceptible to peroxidative degradation upon exposure to strong oxidants like hydroxyl radical or peroxynitrite generated under conditions of oxidative stress. In the eukaryotic cell plasma membrane, where most of the cellular cholesterol resides, peroxidation leads to membrane structural and functional damage from which pathological states may arise. In low density lipoprotein, cholesterol and phospholipid peroxidation have long been associated with atherogenesis...
April 22, 2017: Cell Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28434118/hyperoside-inhibits-the-effects-induced-by-oxidized-low-density-lipoprotein-in-vascular-smooth-muscle-cells-via-oxldl-lox-1-erk-pathway
#11
Zhengyu Zhang, Dongdong Zhang, Baoling Du, Zhiqiang Chen
Hyperoside is a major active constituent in many medicinal plants traditionally used in Chinese medicines for their anti-inflammatory, antioxidative, and vascular protective effects. Recent studies have focused on the protective effects of hyperoside on hyperlipidemia. However, the molecular mechanisms underlying these effects are unknown. In this study, vascular smooth muscle cells (VSMCs) were treated in vitro with oxidized low-density lipoprotein (oxLDL) in the presence or absence of hyperoside. Western blotting, quantitative PCR, and tetrazolium assay were used to detect lectin-like oxLDL receptor-1 (LOX-1) expression and extracellular signal-regulated kinases (ERK) activation, and to determine VSMCs viability...
April 22, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28432661/lipid-biomarkers-for-risk-assessment-in-acute-coronary-syndromes
#12
REVIEW
Jeffrey W Meeusen, Leslie J Donato, Allan S Jaffe
PURPOSE OF REVIEW: The objective of this review was to summarize evidence gathered for the prognostic value of routine and novel blood lipids and lipoproteins measured in patients with acute coronary syndromes (ACS). RECENT FINDINGS: Data supports clear association with risk and actionable value for non-high-density lipoprotein (Non-HDL) cholesterol and plasma ceramides in a setting of ACS. The prognostic value and clinical actionability of apolipoprotein B (apoB) and lipoprotein(a) [Lp(a)] in ACS have not been thoroughly tested, while the data for omega-3 fatty acids and oxidized low-density lipoprotein (Ox-LDL) are either untested or more varied...
June 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28432377/emerging-roles-of-calpain-proteolytic-systems-in-macrophage-cholesterol-handling
#13
REVIEW
Takuro Miyazaki, Akira Miyazaki
Calpains are Ca(2+)-dependent intracellular proteases that play central roles in the post-translational processing of functional proteins. In mammals, calpain proteolytic systems comprise the endogenous inhibitor calpastatin as well as 15 homologues of the catalytic subunits and two homologues of the regulatory subunits. Recent pharmacological and gene targeting studies in experimental animal models have revealed the contribution of conventional calpains, which consist of the calpain-1 and -2 isozymes, to atherosclerotic diseases...
April 21, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28429691/comparison-of-the-effects-of-high-dose-atorvastatin-and-high-dose-rosuvastatin-on-oxidative-stress-in-patients-with-acute-myocardial-infarction-a-pilot-study
#14
Celal Kilit, Fatma Emel Koçak, Türkan Paşalı Kilit
OBJECTIVE: Oxidative stress is increased in patients with acute myocardial infarction (AMI). Statins reduce oxidative stress independent of their effect in reducing low-density lipoprotein cholesterol (LDL-C). The aim of the present study was to compare the effects of atorvastatin and rosuvastatin on oxidative status by investigating serum paraoxonase, serum arylesterase, total oxidant status, total antioxidant status (TAS) and oxidative stress index (OSI) in patients with AMI. METHODS: Seventy patients with AMI were randomized into 2 groups; total of 55 patients (19 females, 36 males) aged 32 to 86 years completed the study and were included in the analysis...
April 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
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
#15
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/28428482/triglyceride-rich-lipoprotein-lpl-vldl-receptor-and-lp-a-vldl-receptor-pathways-for-macrophage-foam-cell-formation
#16
Sadao Takahashi
Very low-density lipoprotein (VLDL) receptor is a member of the low-density lipoprotein (LDL) receptor family. It binds triglyceride rich lipoprotein (TGRL) but not LDL, because it recognizes apolipoprotein (apo)E only but not apoB. The VLDL receptor functions as a peripheral lipoprotein receptor in concert with lipoprotein lipase (LPL) in heart, muscle, adipose tissue and macrophages. In contrast to the LDL receptor, VLDL receptor binds apo E2/2 VLDL and apoE3/3 VLDL particles, and its expression is not down-regulated by intracellular lipoproteins...
April 19, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28425583/sleep-apnea-syndrome-inflammation-and-oxidative-stress-in-hemodialysis-patients
#17
Olga Nikitidou, Euphemia Daskalopoulou, Aikaterini Papagianni, Vassilios Liakopoulos, Aikaterini Michalaki, Foteini Christidou, Paraskevi Argyropoulou, Dimitrios Kirmizis, Georgios Efstratiadis, Pavlos Nikolaidis, Michail Daniilidis, Nicholas Dombros
INTRODUCTION: Sleep apnea syndrome (SAS) is an established cardiovascular risk factor in the general population related to inflammation and oxidative stress and is very common among hemodialysis patients. Cardiovascular disease and its complications is the main cause of death among hemodialysis patients. The aim of the present study was to investigate the role of SAS in the promotion of inflammation and oxidative stress and thus in the augmentation of cardiovascular risk in hemodialysis patients...
April 20, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28422277/oxidized-ldl-gamma-glutamyltransferase-and-adverse-outcomes-in-older-adults
#18
Belinda Spoto, Francesco Mattace-Raso, Eric J Sijbrands, Graziella D'Arrigo, Giovanni Tripepi, Stefano Volpato, Stefania Bandinelli, Luigi Ferrucci, Carmine Zoccali
OBJECTIVES: Gamma-glutamyltransferase (GGT) is a biomarker of liver disease and oxidative stress which was associated with all-cause and cardiovascular (CV) mortality in the general population and in patients with high risk conditions. This study aims at assessing whether oxLDL modifies the relationship between GGT, all-cause, and CV mortality in elderly individuals from the general population. DESIGN: Observational longitudinal study. SETTING: Population-based cohort of older individuals (>65 years) free of liver disease...
April 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28419828/hypoglycemic-and-hypolipidemic-effects-of-a-polysaccharide-from-flower-buds-of-lonicera-japonica-in-streptozotocin-induced-diabetic-rats
#19
Dongying Wang, Xiangmei Zhao, Yulan Liu
Hyperglycemia and dyslipidemia are classic features for diabetes mellitus (DM). In this study, one fraction of the crude polysaccharides extracted from Lonicera japonica flower buds (LJP) were investigated for its hypolipidaemic and hypoglycaemic activities by means of streptozotocin (STZ)-induced diabetic rats. Interestingly, after orally administrated with 800mg/kg body weight (B.W.) LJP for 42 days, the food and water intake and the levels of sugar and insulin in blood for the diabetic rats were drastically decreased, while the contents of liver and skeletal muscle glycogen and the concentrations of hepatic pyruvate kinase and hexokinase were obviously increased (p<0...
April 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28417112/lectin-type-oxidized-ldl-receptor-1-distinguishes-population-of-human-polymorphonuclear-myeloid-derived-suppressor-cells-in-cancer-patients
#20
Thomas Condamine, George A Dominguez, Je-In Youn, Andrew V Kossenkov, Sridevi Mony, Kevin Alicea-Torres, Evgenii Tcyganov, Ayumi Hashimoto, Yulia Nefedova, Cindy Lin, Simona Partlova, Alfred Garfall, Dan T Vogl, Xiaowei Xu, Stella C Knight, George Malietzis, Gui Han Lee, Evgeniy Eruslanov, Steven M Albelda, Xianwei Wang, Jawahar L Mehta, Meenakshi Bewtra, Anil Rustgi, Neil Hockstein, Robert Witt, Gregory Masters, Brian Nam, Denis Smirnov, Manuel A Sepulveda, Dmitry I Gabrilovich
Polymorphonuclear myeloid-derived suppressor cells (PMN-MDSC) are important regulators of immune responses in cancer and have been directly implicated in promotion of tumor progression. However, the heterogeneity of these cells and lack of distinct markers hampers the progress in understanding of the biology and clinical importance of these cells. Using partial enrichment of PMN-MDSC with gradient centrifugation we determined that low density PMN-MDSC and high density neutrophils from the same cancer patients had a distinct gene profile...
August 2016: Science Immunology
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