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lipoprotein A

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https://www.readbyqxmd.com/read/28087520/atheroprotective-vaccination-with-mhc-ii-restricted-apob-peptides-induces-peritoneal-il-10-producing-cd4-t-cells
#1
Takayuki Kimura, Kevin Tse, Sara McArdle, Teresa Gerhardt, Jacqueline Miller, Zbigniew Mikulski, John Sidney, Alessandro Sette, Dennis Wolf, Klaus Ley
Although immunization with MHC class II-restricted ApoB peptides has been shown to be atheroprotective, the mechanism is unclear. Here, we investigated CD4(+) T cell populations in immunized atherosclerotic mice. Peptides (16-mers) from mouse ApoB, the core protein of low-density lipoprotein (LDL), were screened for binding to I-A(b) by computer prediction and confirmed by radiolabeled peptide competition. Three new peptides, P101 (FGKQGFFPDSVNKALY, 5.5 nM IC50), P102 (TLYALSHAVNSYFDVD, 6.8 nM), and P103 (LYYKEDKTSLSASAAS, 95 nM) were tested in an atherosclerosis model (Apoe(-/-) mice on western diet)...
January 13, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28086886/biochemical-mechanism-underlying-hypertriglyceridemia-and-hepatic-steatosis-hepatomegaly-induced-by-acute-schisandrin-b-treatment-in-mice
#2
Yi Zhang, Jing Zhao, Shu-Feng Zhou, Zhi-Ling Yu, Xiao-Yan Wang, Pei-Li Zhu, Zhu-Sheng Chu, Si-Yuan Pan, Ming Xie, Kam-Ming Ko
BACKGROUND: It has been demonstrated that acute oral administration of schisandrin B (Sch B), an active dibenzocyclooctadiene isolated from Schisandrae Fructus (a commonly used traditional Chinese herb), increased serum and hepatic triglyceride (TG) levels and hepatic mass in mice. The present study aimed to investigate the biochemical mechanism underlying the Sch B-induced hypertriglyceridemia, hepatic steatosis and hepatomegaly. METHODS: Male ICR mice were given a single oral dose of Sch B (0...
January 13, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28086872/dapagliflozin-decreases-small-dense-low-density-lipoprotein-cholesterol-and-increases-high-density-lipoprotein-2-cholesterol-in-patients-with-type-2-diabetes-comparison-with-sitagliptin
#3
Toshiyuki Hayashi, Tomoyasu Fukui, Noriko Nakanishi, Saki Yamamoto, Masako Tomoyasu, Anna Osamura, Makoto Ohara, Takeshi Yamamoto, Yasuki Ito, Tsutomu Hirano
BACKGROUND: The sodium-glucose co-transporter-2 (SGLT-2) inhibitors have been reported to increase both low-density lipoprotein (LDL) and high-density lipoprotein (HDL)-cholesterol (C). This study aimed to determine how SGLT-2 inhibitors affect LDL and HDL-C subspecies. METHODS: This single center, open-label, randomized, prospective study included 80 patients with type 2 diabetes taking prescribed oral hypoglycemic agents. Patients were allocated to receive dapagliflozin (n = 40) or sitagliptin (n = 40) as add-on treatment...
January 13, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28086768/probiotic-mixture-improves-fatty-liver-disease-by-virtue-of-its-action-on-lipid-profiles-leptin-and-inflammatory-biomarkers
#4
Hessah Mohammed Al-Muzafar, Kamal Adel Amin
BACKGROUND: A high fat diet has an essential role in the pathogenesis of non-alcoholic fatty liver disease (NAFLD). This condition is characterized by hepatic fat accumulation (steatosis) and is associated with obesity, diabetes, and fibrosis or cirrhosis of the liver. Probiotics may be useful in the treatment of steatosis. This study examined the effects of an ingested probiotic formulation on the lipid profiles, liver functions, leptin levels, and inflammatory marker levels of rats with NAFLD that had been induced via high fat and sucrose diet (HFSD)...
January 13, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28081360/pinus-densiflora-bark-extract-pinexol-decreased-adiposity-in-mice-by-down-regulation-of-hepatic-de-novo-lipogenesis-and-adipogenesis-in-white-adipose-tissue
#5
Hyemyoung Ahn, Gwang-Woong Go
PineXol, extracted from Korean red pine bark, has beneficial effects, such as antioxidant, anti3 inflammatory, and anti-lipogenic activities in vitro. We tested the hypothesis that PineXol supplementation could have anti-obesity effects on mice fed a high-fat diet (HFD). Four-week old male C57BL/6 mice were fed normal chow (18% kcal from fat) or HFD (60% kcal from fat). HFD-fed animals were also subjected to PineXol treatment at a dose of 10 or 50 mg/kg body weight (BW) (PX10 or PX50, respectively) body weight...
January 12, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28081247/changes-of-oxidative-stress-glutathione-and-its-dependent-antioxidant-enzyme-activities-in-patients-with-hepatocellular-carcinoma-before-and-after-tumor-resection
#6
Shao-Bin Cheng, Hsiao-Tien Liu, Sin-Yuan Chen, Ping-Ting Lin, Chia-Yu Lai, Yi-Chia Huang
The changes in and relationship between oxidative stress and the glutathione (GSH) antioxidant system in the plasma and tissues of patients with hepatocellular carcinoma (HCC) before and after tumor resection have not been clearly determined. We investigated the changes in oxidative stress, GSH status and its dependent antioxidant enzyme activities in HCC patients before and after tumor resection, and to determine the association of oxidative stress with GSH and its dependent antioxidant enzyme activities in plasma and tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28081221/dietary-lipid-sources-influence-fatty-acid-composition-in-tissue-of-large-yellow-croaker-larmichthys-crocea-by-regulating-triacylglycerol-synthesis-and-catabolism-at-the-transcriptional-level
#7
Hong Qiu, Min Jin, Yi Li, You Lu, Yingmei Hou, Qicun Zhou
An 8-week feeding trial was conducted to evaluate the effects of dietary lipid sources on growth performance, fatty acid composition, rate-limiting enzyme activities and gene expression related to lipid metabolism in large yellow croaker (Larmichthys crocea). Five iso-nitrogenous and iso-lipidic experimental diets were formulated to contain different lipid sources, such as fish oil (FO), soybean oil (SO), linseed oil (LO), rapeseed oil (RO) and peanut oil (PO), respectively. Triplicate groups of 50 fish (initial weight 13...
2017: PloS One
https://www.readbyqxmd.com/read/28081181/aronia-melanocarpa-extract-ameliorates-hepatic-lipid-metabolism-through-ppar%C3%AE-2-downregulation
#8
Chung-Hwa Park, Jung-Hee Kim, Eun Byul Lee, Wonhee Hur, Oh-Joo Kwon, Hyoung-Jin Park, Seung Kew Yoon
Nonalcoholic fatty liver disease (NAFLD) is a hepatic manifestation of metabolic syndrome. Studies have demonstrated that anthocyanin-rich foods may improve hyperlipidemia and ameliorate hepatic steatosis. Here, effects of Aronia melanocarpa (AM), known to be rich of anthocyanins, on hepatic lipid metabolism and adipogenic genes were determined. AM was treated to C57BL/6N mice fed with high fat diet (HFD) or to FL83B cells treated with free fatty acid (FFA). Changes in levels of lipids, enzymes and hormones were observed, and expressions of adipogenic genes involved in hepatic lipid metabolism were detected by PCR, Western blotting and luciferase assay...
2017: PloS One
https://www.readbyqxmd.com/read/28081164/economic-evaluation-of-pcsk9-inhibitors-in-reducing-cardiovascular-risk-from-health-system-and-private-payer-perspectives
#9
Alejandro Arrieta, Timothy F Page, Emir Veledar, Khurram Nasir
The introduction of Proprotein covertase subtilisin/kexin type 9 (PCSK9) inhibitors has been heralded as a major advancement in reducing low-density lipoprotein cholesterol levels by nearly 50%. However, concerns have been raised on the added value to the health care system in terms of their costs and benefits. We assess the cost-effectiveness of PCSK9 inhibitors based on a decision-analytic model with existing clinical evidence. The model compares a lipid-lowering therapy based on statin plus PCSK9 inhibitor treatment with statin treatment only (standard therapy)...
2017: PloS One
https://www.readbyqxmd.com/read/28079773/pregnancies-after-the-diagnosis-of-mild-gestational-diabetes-mellitus-and-risk-of-cardiometabolic-disorders
#10
Michael W Varner, Madeline Murguia Rice, Mark B Landon, Brian M Casey, Uma M Reddy, Ronald J Wapner, Dwight J Rouse, Alan T N Tita, John M Thorp, Edward K Chien, George R Saade, Alan M Peaceman, Sean C Blackwell, J Peter Vandorsten
OBJECTIVE: To assess the association of subsequent pregnancy with subsequent metabolic syndrome and type II diabetes mellitus after a pregnancy complicated by mild gestational diabetes mellitus (GDM). METHODS: We conducted a prospective observational follow-up study of women with mild GDM randomized from 2002 to 2007 to usual care or dietary intervention and glucose self-monitoring. Women were evaluated 5-10 years after the parent study. Participants were grouped according to the number of subsequent pregnancies (group A, none [reference]; group B, one; group C, two or greater)...
January 9, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28079153/nf-%C3%AE%C2%BAb-activation-is-critical-for-bacterial-lipoprotein-tolerance-enhanced-bactericidal-activity-in-macrophages-during-microbial-infection
#11
Jinghua Liu, Jing Xiang, Xue Li, Siobhan Blankson, Shuqi Zhao, Junwei Cai, Yong Jiang, H Paul Redmond, Jiang Huai Wang
Tolerance to bacterial components represents an essential regulatory mechanism during bacterial infection. Bacterial lipoprotein (BLP)-induced tolerance confers protection against microbial sepsis by attenuating inflammatory responses and augmenting antimicrobial activity in innate phagocytes. It has been well-documented that BLP tolerance-attenuated proinflammatory cytokine production is associated with suppressed TLR2 signalling pathway; however, the underlying mechanism(s) involved in BLP tolerance-enhanced antimicrobial activity is unclear...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28078998/lipoprotein-a-management-pharmacological-and-apheretic-treatment
#12
Ruth Hanssen, Ioanna Gouni-Berthold
Lipoprotein (a) [Lp(a)] is an low-density lipoprotein (LDL)-like particle with an additional apolipoprotein, apolipoprotein (a), [apo(a)] attached to apolipoprotein B. Recent epidemiologic and Mendelian randomization studies have provided evidence that Lp(a) is causally related to the pathogenesis of atherosclerosis and cardiovascular disease (CVD). The risk association between Lp(a) concentrations and CVD is still controversial but seems to be continuous and without an obvious threshold Lp(a) level. Circulating concentrations of Lp(a) are genetically determined; desirable levels are amplt; 50 mg/dl...
January 12, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28078997/lipoprotein-a-and-cardiovascular-risk-the-show-must-go-on
#13
Niki Katsiki, Khalid Al-Rasadi, Dimitri P Mikhailidis
Lipoprotein (a) [Lp(a)] is an independent but moderate, predictor for coronary heart disease (CHD) prevalence and severity. Several established and emerging cardiovascular (CV) risk factors including age, gender, ethnicity, smoking, dyslipidemia, hypertension, obesity, type 2 diabetes mellitus, alcohol consumption, arterial stiffness and hyperuricemia have been linked to Lp(a) metabolism. Apart from CHD, Lp(a) has been also associated with non-cardiac vascular diseases and diseases associated with increased CV risk such as chronic kidney disease, metabolic syndrome, non-alcoholic fatty liver disease, erectile dysfunction, obstructive sleep apnea syndrome, inflammatory bowel diseases and human immunodeficiency virus infection...
January 12, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28078862/a-placebo-controlled-trial-of-a-proprietary-lipid-lowering-nutraceutical-supplement-in-the-management-of-dyslipidemia
#14
M Houston, R Rountree, J Lamb, S Phipps, S Meng, B Zhang
There is an ever growing emergence in the popularity of patient-driven care. As this health and wellness model grows, inquiries into diet, lifestyle, and supplemental approaches will continue to become a focal point for the healthcare consumer. Because of this, the aim of this study is to determine the tolerability, and overall effectiveness of a proprietary multi-ingredient lipid-lowering supplement in subjects with dyslipidemia. Forty participants were recruited for a single-center, double-blind randomized, placebocontrolled trial...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28078419/nanostructured-nio-based-reagentless-biosensor-for-total-cholesterol-and-low-density-lipoprotein-detection
#15
Gurpreet Kaur, Monika Tomar, Vinay Gupta
Nanostructured nickel oxide (NiO) thin film has been explored as a matrix to develop a reagentless biosensor for free and total cholesterol as well as low density lipoprotein (LDL) detection. The redox property of the matrix has been exploited to enhance the electron transfer between the enzyme and the electrode as well as to eliminate the toxic mediator in solution. X-ray diffraction, scanning electron microscopy, atomic force microscopy, and Fourier transform infrared spectroscopy were carried out to characterize the NiO thin film...
January 11, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28077872/structural-basis-for-nutrient-acquisition-by-dominant-members-of-the-human-gut-microbiota
#16
Amy J Glenwright, Karunakar R Pothula, Satya P Bhamidimarri, Dror S Chorev, Arnaud Baslé, Susan J Firbank, Hongjun Zheng, Carol V Robinson, Mathias Winterhalter, Ulrich Kleinekathöfer, David N Bolam, Bert van den Berg
The human large intestine is populated by a high density of microorganisms, collectively termed the colonic microbiota, which has an important role in human health and nutrition. The survival of microbiota members from the dominant Gram-negative phylum Bacteroidetes depends on their ability to degrade dietary glycans that cannot be metabolized by the host. The genes encoding proteins involved in the degradation of specific glycans are organized into co-regulated polysaccharide utilization loci, with the archetypal locus sus (for starch utilisation system) encoding seven proteins, SusA-SusG...
January 11, 2017: Nature
https://www.readbyqxmd.com/read/28077740/the-jarisch-herxheimer-reaction-after-antibiotic-treatment-of-spirochetal-infections-a-review-of-recent-cases-and-our-understanding-of-pathogenesis
#17
REVIEW
Thomas Butler
Within 24 hours after antibiotic treatment of the spirochetal infections syphilis, Lyme disease, leptospirosis, and relapsing fever (RF), patients experience shaking chills, a rise in temperature, and intensification of skin rashes known as the Jarisch-Herxheimer reaction (JHR) with symptoms resolving a few hours later. Case reports indicate that the JHR can also include uterine contractions in pregnancy, worsening liver and renal function, acute respiratory distress syndrome, myocardial injury, hypotension, meningitis, alterations in consciousness, seizures, and strokes...
January 11, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28077734/intake-of-up-to-3-eggs-per-day-is-associated-with-changes-in-hdl-function-and-increased-plasma-antioxidants-in-healthy-young-adults
#18
Diana M DiMarco, Gregory H Norris, Courtney L Millar, Christopher N Blesso, Maria Luz Fernandez
BACKGROUND: HDL function may be more important than HDL concentration in determining risk for cardiovascular disease. In addition, HDL is a carrier of carotenoids and antioxidant enzymes, which protect HDL and LDL particles against oxidation. OBJECTIVE: The goal of this study was to determine the impact of consuming 0-3 eggs/d on LDL and HDL particle size, HDL function, and plasma antioxidants in a young, healthy population. METHODS: Thirty-eight healthy men and women [age 18-30 y, body mass index (in kg/m(2)) 18...
January 11, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28077384/predictors-of-nonuse-of-a-high-potency-statin-after-an-acute-coronary-syndrome-insights-from-the-stabilization-of-plaques-using-darapladib-thrombolysis-in-myocardial-infarction-52-solid-timi-52-trial
#19
Alon Eisen, Christopher P Cannon, Eugene Braunwald, Dylan L Steen, Jing Zhou, Erica L Goodrich, KyungAh Im, Anthony J Dalby, Jindrich Spinar, Shruti Daga, Mary Ann Lukas, Michelle L O'Donoghue
BACKGROUND: High-potency statins reduce cardiovascular events after acute coronary syndromes but remain underused in clinical practice. We examined predictors of nonuse of high-potency statins after acute coronary syndromes. METHODS AND RESULTS: The Stabilization of pLaques usIng Darapladib-Thrombolysis in Myocardial Infarction (SOLID-TIMI 52) trial enrolled patients after an acute coronary syndrome in 36 countries between 2009 and 2011. Statin use was strongly encouraged throughout the trial, and statin potency was at the discretion of the treating physician...
January 11, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28077357/triglyceride-rich-lipoprotein-lipolysis-products-increase-blood-brain-barrier-transfer-coefficient-and-induce-astrocyte-lipid-droplets-and-cell-stress
#20
Linda L Lee, Hnin Hnin Aung, Dennis W Wilson, Steven E Anderson, John C Rutledge, Jennifer M Rutkowsky
Elevation of blood triglycerides, primarily as triglyceride-rich lipoproteins (TGRL), has been linked to cerebrovascular inflammation, vascular dementia, and Alzheimer's disease (AD). Brain microvascular endothelial cells and astrocytes, two cell components of the neurovascular unit, participate in controlling blood-brain barrier (BBB) permeability and regulating neurovascular unit homeostasis. Our studies showed that infusion of high physiological concentrations of TGRL lipolysis products (TGRL + lipoprotein lipase) activate and injure brain endothelial cells and transiently increases the BBB transfer coefficient (Ki=permeability x surface area/volume) in vivo...
January 11, 2017: American Journal of Physiology. Cell Physiology
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