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Lipoprotein(a)

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https://www.readbyqxmd.com/read/28641384/acute-testosterone-deficiency-alters-adipose-tissue-fatty-acid-storage
#1
Sylvia Santosa, Nikki C Bush, Michael D Jensen
Context: Although the long-term effects of testosterone on adipose tissue lipid metabolism in men have been defined, the short-term regulation of these effects is not well understood. Objective: We examined the effects of acute testosterone withdrawal on subcutaneous abdominal and femoral adipose tissue fatty acid (FA) storage and cellular mechanisms. Design: This was a prospective, randomized trial. Setting: Mayo Clinic Clinical Research Unit...
June 21, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28641153/lipoprotein-a-and-coronary-atheroma-progression-rates-during-long-term-high-intensity-statin-therapy-insights-from-saturn
#2
Rishi Puri, Christie M Ballantyne, Ron C Hoogeveen, Mingyuan Shao, Philip Barter, Peter Libby, M John Chapman, Raimund Erbel, Benoit J Arsenault, Joel S Raichlen, Steven E Nissen, Stephen J Nicholls
BACKGROUND & AIMS: Lipoprotein(a) [Lp(a)] is a low-density lipoprotein (LDL)-like particle that associates with major adverse cardiovascular events (MACE). We examined relationships between Lp(a) measurements and changes in coronary atheroma volume following long-term maximally-intensive statin therapy in coronary artery disease patients. METHODS: Study of coronary atheroma by intravascular ultrasound: Effect of Rosuvastatin Versus Atorvastatin (SATURN) used serial intravascular ultrasound measures of coronary atheroma volume in patients treated with rosuvastatin 40 mg or atorvastatin 80 mg for 24 months...
June 15, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28640651/association-of-the-lipoprotein-lipase-gene-ser447ter-polymorphism-with-hypertension-and-blood-pressure-variation-evidence-from-an-updated-meta-analysis
#3
June Wang, Shenlin Du, Jiamin Wang, Man Zhu, Xue Wen, Weiqing Yang
The polymorphism of lipoprotein lipase (LPL) gene Ser447Ter (S447X) has long been linked to hypertension and blood pressure variation, but the established data remained controversial. To better elucidate this inconsistency, a meta-analysis was conducted. We comprehensively searched electronic databases, including Pubmed, EMBASE, China National Knowledge Infrastructure (CNKI), Web of Science, for all literatures with the last update on February 2016. The strength of association was calculated by using odds ratios (ORs) and weighted mean differences (WMDs) with corresponding 95% confidence intervals (CIs)...
June 22, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28637178/the-at04a-vaccine-against-proprotein-convertase-subtilisin-kexin-type-9-reduces-total-cholesterol-vascular-inflammation-and-atherosclerosis-in-apoe-3leiden-cetp-mice
#4
Christine Landlinger, Marianne G Pouwer, Claudia Juno, José W A van der Hoorn, Elsbet J Pieterman, J Wouter Jukema, Guenther Staffler, Hans M G Princen, Gergana Galabova
Aims: Proprotein convertase subtilisin/kexin type 9 (PCSK9) has emerged as a promising therapeutic target for the treatment of hypercholesterolaemia and atherosclerosis. PCSK9 binds to the low density lipoprotein receptor and enhances its degradation, which leads to the reduced clearance of low density lipoprotein cholesterol (LDLc) and a higher risk of atherosclerosis. In this study, the AT04A anti-PCSK9 vaccine was evaluated for its therapeutic potential in ameliorating or even preventing coronary heart disease in the atherogenic APOE*3Leiden...
June 19, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28636837/microrna-101-2-5p-targets-the-apob-gene-in-liver-of-chicken-gallus-gallus
#5
Zheng Ma, Hong Li, Hang Zheng, Keren Jiang, Lijuan Jia, Fengbin Yan, Yadong Tian, Xiangtao Kang, Yanbin Wang, Xiaojun Liu
Apolipoprotein B (ApoB) is a major protein component of plasma lipoproteins, which have been involved in many important biological processes such as lipid transportation, enzyme activity regulation and receptor recognition. Extensive studies have showed that the expression of the ApoB was regulated at multiple levels. However, the regulation of ApoB expression by microRNAs (miRNAs) still remains unknown. In present studies, miRNAs that interact with ApoB have been predicted in chicken. The targeted relationship between the predicated miRNAs and ApoB was verified through dual luciferase reporter assay in chicken DF1 cells, and the effect of miRNAs on ApoB expression was analyzed in chicken embryo hepatocytes stimulated by 17β-estradiol...
June 21, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28636184/pharmacokinetics-pharmacodynamics-of-bococizumab-a-monoclonal-antibody-to-pcsk9-after-single-subcutaneous-injection-at-3-sites-nct-02043301
#6
Ellen Q Wang, Anna Plotka, Joanne Salageanu, Catherine Sattler, Carla Yunis
AIM: To characterize the single-dose pharmacokinetics (PK) and pharmacodynamics (PD) of bococizumab, a monoclonal antibody inhibiting proprotein convertase subtilisin/kexin type 9 (PCSK9), administered subcutaneously (s.c.) to the abdomen, thigh, or upper arm (NCT02043301). METHODS: Seventy-five adults with low-density lipoprotein cholesterol (LDL-C) ≥130 mg/dL and not on background lipid-lowering therapy were randomized (1:1:1) to a single 150-mg s.c. dose of bococizumab administered to the abdomen, thigh, or upper arm...
June 21, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28636182/effects-of-green-tea-on-lipid-metabolism-in-overweight-or-obese-people-a-meta-analysis-of-randomized-controlled-trials
#7
Yuan Fen, Dong Hui, Fang Ke, Gong Jing, Lu Fu Er
SCOPE: The effects of green tea on lipid metabolism were inconsistent. The objective of this meta-analysis was to evaluate the effects of green tea on lipid metabolism in overweight or obese people. METHODS AND RESULTS: We searched randomized controlled trials(RCTs) comparing green tea with a control on lipid metabolism on PUBMED and WEB OF SCIENCE (January 1990 to September 2016), COCHRANE and EMBASE (updated to October 2016), and the Chinese databases CNKI, WanFang and CBMD...
June 21, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28636010/engineering-multi-functional-bacterial-outer-membrane-vesicles-as-modular-nanodevices-for-biosensing-and-bioimaging
#8
Qi Chen, Sharon Rozovsky, Wilfred Chen
Outer membrane vesicles (OMVs) are proteoliposomes derived from the outer membrane and periplasmic space of many Gram-negative bacteria including E. coli as part of their natural growth cycle. Inspired by the natural ability of E. coli to sort proteins to both the exterior and interior of OMVs, we reported here a one-pot synthesis approach to engineer multi-functionalized OMV-based sensors for both antigen binding and signal generation. SlyB, a native lipoprotein, was used a fusion partner to package nanoluciferase (Nluc) within OMVs, while a previously developed INP-Scaf3 surface scaffold was fused to the Z-domain for antibody recruiting...
June 21, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28635335/a-novel-synergetic-targeting-strategy-for-glioma-therapy-employing-borneol-combination-with-angiopep-2-modified-dox-loaded-pamam-dendrimer
#9
Shunping Han, Hongyue Zheng, Yanping Lu, Yue Sun, Anhao Huang, Weidong Fei, Xiaowei Shi, Xiuling Xu, Jingjing Li, Fanzhu Li
Glioma is the most common primary malignant brain tumor and the effect of chemotherapy is hampered by low permeability across the blood-brain-barrier (BBB). Borneol is a time-honored 'Guide' drug in traditional Chinese medicine and has been proved to be capable of promoting free drugs into the brain efficiently, but there are still risks that free drugs, especially anti-glioma drugs, may be disassembled and metabolized before penetrating the BBB and caused the whole brain distribution. The purpose of this paper was to investigate whether borneol intervention could facilitate the BBB penetration and assist glioma treatment by combining with doxorubicin (DOX) loaded PAMAM dendrimers drug delivery system modified with Angiopep-2 (a ligand of the low-density lipoprotein receptor-related protein, which overexpress both in the BBB and gliomas)...
June 21, 2017: Journal of Drug Targeting
https://www.readbyqxmd.com/read/28635327/within-visit-blood-pressure-variability-and-cardiovascular-risk-factors-in-hypertensive-patients-with-non-dialysis-chronic-kidney-disease
#10
Kengo Azushima, Hiromichi Wakui, Kazushi Uneda, Sona Haku, Ryu Kobayashi, Kohji Ohki, Sho Kinguchi, Kotaro Haruhara, Tetsuya Fujikawa, Yoshiyuki Toya, Satoshi Umemura, Kouichi Tamura
As there may be an association between within-visit blood pressure (BP) variability and cardiovascular disease (CVD), we investigated the clinical significance of this BP variability in non-dialysis chronic kidney disease (CKD) patients. MATERIALS AND METHODS: According to the median of coefficient of variation (CV) of three systolic BP (SBP) readings within a single visit, we divided hypertensive patients with stage G1-4 CKD already treated with antihypertensive therapy into the high SBP-CV group and the low SBP-CV group...
June 21, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28634856/estrogen-receptor-%C3%AE-gene-polymorphism-and-vascular-complications-in-girls-with-type-1-diabetes-mellitus
#11
Bartosz Słomiński, Jolanta Myśliwska, Monika Ryba-Stanisławowska, Maria Skrzypkowska, Małgorzata Myśliwiec
The effect of estrogens is mediated by activation of estrogen receptors (ERs). Because ER-α gene polymorphisms may exert different effects in childhood, we analyzed the associations between the IVS1 -397T>C (PvuII) polymorphism and systemic inflammatory state, proangiogenic factors, frequency of monocyte subsets, lipid profile, blood pressure, and vascular complications in girls with type 1 diabetes mellitus (DM1). We examined 180 young girls with DM1 and 120 healthy age-matched controls. The analysis concerned PvuII polymorphism of the ER-α gene as well as the levels of serum inflammatory markers (CRP, IL-6, TNF-α), proangiogenic factors (VEGF, angiogenin), 17β-estradiol, values of monocyte subsets (CD14(++)CD16(-) and CD14(+)CD16(+)), lipid profile, and blood pressure...
June 20, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28634822/the-ratio-of-eicosapentaenoic-acid-epa-to-arachidonic-acid-may-be-a-residual-risk-marker-in-stable-coronary-artery-disease-patients-receiving-treatment-with-statin-following-epa-therapy
#12
Shigemasa Tani, Ken Nagao, Kenji Kawauchi, Tsukasa Yagi, Wataru Atsumi, Rei Matsuo, Atsushi Hirayama
BACKGROUND: We investigated the relationship between the eicosapentaenoic acid (EPA)/arachidonic acid (AA) ratio and non-high-density lipoprotein cholesterol (non-HDL-C) level, a major residual risk of coronary artery disease (CAD), in statin-treated CAD patients following EPA therapy. METHODS: We conducted a 6-month, prospective, randomized clinical trial to investigate the effect of the additional administration of EPA on the EPA/AA ratio and the serum non-HDL-C level in stable CAD patients receiving statin treatment...
June 20, 2017: American Journal of Cardiovascular Drugs: Drugs, Devices, and Other Interventions
https://www.readbyqxmd.com/read/28634192/a-new-enzyme-linked-immunosorbent-assay-system-for-human-serum-hepatic-triglyceride-lipase
#13
Kazuya Miyashita, Katsuyuki Nakajima, Isamu Fukamachi, Yuji Muraba, Takafumi Koga, Yohnosuke Shimomura, Tetsuyo Machida, Masami Murakami, Junji Kobayashi
There is no previously established method for measuring human hepatic triglyceride lipase (HTGL) concentration in serum. In this study, we developed new monoclonal antibodies (MoAb mouse 9A1, MoAb rat 141A1) that react with both HTGL in serum and in post-heparin plasma (PHP) and established a novel enzyme-linked immunosorbent assay (ELISA) system for measuring serum HTGL as well as PHP-HTGL concentrations. To confirm the specificity of MoAb, we performed an immunoprecipitation -immunoblotting analysis. Both MoAb mouse 9A1and MoAb rat 141 A1 were able to immunoprecipitate not only recombinant HTGL and PHP-HTGL but also serum HTGL, demonstrating that HTGL exists in serum obtained without heparin injection...
June 20, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28633641/expression-levels-of-atherosclerosis-associated-mir-143-and-mir-145-in-the-plasma-of-patients-with-hyperhomocysteinaemia
#14
Kejian Liu, Saiyare Xuekelati, Yue Zhang, Yin Yin, Yue Li, Rui Chai, Xinwei Li, Yi Peng, Jiangdong Wu, Xiaomei Guo
BACKGROUND: An elevated level of homocysteine (Hcy) in the blood is designated hyperhomocysteinaemia (Hhcy) and is regarded as a strong risk factor for the development of atherosclerosis (ATH), although the association remains controversial. Considered to be essential gene expression regulators, micro-RNAs (miRNAs) modulate cardiovascular disease development and thus can be regarded as potential biomarkers and therapeutic targets in atherosclerosis. The aim of the current study is to investigate the expression levels of atherosclerosis-associated miR-143 and miR-145 in Hhcy patients and predict the progress of atherosclerosis in Hhcy patients...
June 20, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28633585/lipoprotein-a-activated-immunity-insulin-resistance-and-new-onset-diabetes
#15
Ayşem Kaya, Altan Onat, Hüsniye Yüksel, Günay Can, Murat Yüksel, Evin Ademoğlu
OBJECTIVES: Some evidence suggests that serum lipoprotein[Lp](a) may be inversely linked to type-2 diabetes. We aimed to determine in nondiabetic people the relationship of serum [Lp](a) with insulin resistance and new-onset diabetes (NOD). MATERIALS AND METHODS: Population-based middle-aged adults (n = 1685) were categorized by fasting glucose and stratified to gender, having excluded prevalent diabetic subjects. NOD (n = 90) occurred over a median 5 years' follow-up...
June 22, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28633452/threshold-effects-of-circulating-angiopoietin-like-3-levels-on-plasma-lipoproteins
#16
Sergio Fazio, Jessica Minnier, Michael D Shapiro, Sotirios Tsimikas, Patrizia Tarugi, Maurizio R Averna, Marcello Arca, Hagai Tavori
Context: Angiopoietin-like 3 (ANGPTL3) deficiency in plasma due to loss-of-function (LOF) gene mutations causes familial combined hypobetalipoproteinemia (FHBL) type 2 in homozygotes. However, the lipid phenotype in heterozygotes is much milder and does not appear to relate directly to ANGPTL3 levels. Furthermore, the low LDL phenotype in carriers of ANGPTL3 mutations is unexplained. Objective: To determine whether a reduction below a critical threshold in plasma ANGPTL3 levels is a determinant of lipoprotein metabolism in FHBL2, and to study the whether PCSK9 is involved in determining low LDL levels in this condition...
June 19, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28633193/trictide-a-tricellulin-derived-peptide-to-overcome-cellular-barriers
#17
Jimmi Cording, Basak Arslan, Christian Staat, Sophie Dithmer, Susanne M Krug, Anneliese Krüger, Philipp Berndt, Ramona Günther, Lars Winkler, Ingolf E Blasig, Reiner F Haseloff
The majority of tight junction (TJ) proteins restrict the paracellular permeation of solutes via their extracellular loops (ECLs). Tricellulin tightens tricellular TJs (tTJs) and regulates bicellular TJ (bTJ) proteins. We demonstrate that the addition of recombinantly produced extracellular loop 2 (ECL2) of tricellulin opens cellular barriers. The peptidomimetic trictide, a synthetic peptide derived from tricellulin ECL2, increases the passage of ions, as well as of small and larger molecules up to 10 kDa, between 16 and 30 h after application to human epithelial colorectal adenocarcinoma cell line 2...
June 20, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28633072/roles-of-serum-in-innate-immune-responses-of-human-leukocytes-to-synthetic-lipopeptide
#18
Terukazu Sanui, Masaaki Takeshita, Takao Fukuda, Urara Tanaka, Rehab Alshargabi, Yoshitomi Aida, Fusanori Nishimura
Tripalmitoyl-S-glyceryl-l-Cys-Ser-(Lys)4 (Pam3CSK4) is a highly conserved molecular motif found in various classes of lipoproteins. The requirement for leukocyte to respond to synthetic Pam3CSK4 were studied. Pam3CSK4 primed neutrophils for a respiratory burst in a serum-dependent manner. Pam3CSK4 upregulated CD11b, CD14, and cytochrome b558, and downregulated Leu-8. Treatment of neutrophils with anti-CD14 antibodies and treatment of serum with anti-LPS binding protein (LBP) antibodies resulted in the inhibition of priming for respiratory burst by Pam3CSK4...
June 17, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28632940/characterization-of-the-i4399m-variant-of-apolipoprotein-a-implications-for-altered-prothrombotic-properties-of-lipoprotein-a
#19
Corey A Scipione, Jackson T McAiney, Daniel J Simard, Zainab A Bazzi, Matthew Gemin, Rocco Romagnuolo, Fraser L Macrae, Robert A Ariëns, Robert A Hegele, Janeen Auld, James W Gauld, Michael B Boffa, Marlys L Koschinsky
BACKGROUND: Lipoprotein(a) (Lp(a)) is a causal risk factor for a variety of cardiovascular diseases. Apolipoprotein(a) (apo(a)), the distinguishing component of Lp(a), is homologous to plasminogen, suggesting that Lp(a) can interfere with the normal fibrinolytic functions of plasminogen. This has implications for the persistence of fibrin clots in the vasculature and hence to atherothrombotic diseases. A single nucleotide polymorphism (rs3798220) in the gene encoding apo(a) has been reported that results in an Ile to Met substitution in the protease-like domain (I4399M variant)...
June 20, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28632494/long-term-dutasteride-therapy-in-men-with-benign-prostatic-hyperplasia-alters-glucose-and-lipid-profiles-and-increases-severity-of-erectile-dysfunction
#20
Abdulmaged Traish, Karim Sultan Haider, Gheorghe Doros, Ahmad Haider
Background Dutasteride has been successfully used in treatment of lower urinary tract symptoms (LUTS) secondary to benign prostatic hyperplasia (BPH). However, dutasteride inhibits 5α-reductase type 1 and type 2 enzymes and may compromises glucocorticoids and androgen metabolism and alters metabolic function resulting in undesirable metabolic and sexual adverse side effects. Aim The aim of this study was to investigate the long-term adverse effects of dutasteride therapy in men with BPH on: i) blood glucose, ii) glycated hemoglobin (HbA1c), iii) low density lipoprotein-cholesterol (LDL-C); high density lipoprotein-cholesterol (HDL-C) and total cholesterol (TC), iv) testosterone (T), v) liver alanine and aspartate aminotransferases (ALT and AST) and vi) erectile dysfunction (ED)...
June 21, 2017: Hormone Molecular Biology and Clinical Investigation
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