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https://www.readbyqxmd.com/read/28476116/low-apolipoprotein-m-serum-levels-correlate-with-systemic-lupus-erythematosus-disease-activity-and-apolipoprotein-m-gene-polymorphisms-with-lupus
#1
Wenhan Du, Ting Shen, Hui Li, Yinyin Liu, Lagu He, Li Tan, Min Hu, Yaping Ren
BACKGROUND: Sequence variation in gene promoters is often associated with disease risk. In this study, we tested the hypothesis that common promoter variation in the APOM gene is associated with systemic lupus erythematosus (SLE) risk and SLE-related clinical phenotypes in a Chinese cohort. Meanwhile, we investigated the expression of apolipoprotein M (APOM) in the serum of patients with systemic lupus erythematosus (SLE) and its relationship with disease activity. METHODS: We used a case-control design and genotyped 52 SLE patients and 52 healthy controls for 19 APOM promoter single nucleotide polymorphism (SNP) (rs113947529, rs1143030, rs114826514, rs116715239, rs12525463, rs1266078, rs2273612, rs28432254, rs34490746, rs4947251, rs55880811, rs707921, rs74890500, rs75629491, rs76611345, rs76794541, rs805264, rs805297, rs9267528)...
May 5, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28392500/metabolism-and-proteomics-of-large-and-small-dense-ldl-in-combined-hyperlipidemia-effects-of-rosuvastatin
#2
Nuntakorn Thongtang, Margaret R Diffenderfer, Esther M M Ooi, P Hugh R Barrett, Scott M Turner, Ngoc-Anh Le, W Virgil Brown, Ernst J Schaefer
Small dense LDL (sdLDL) has been reported to be more atherogenic than large buoyant LDL (lbLDL). We examined the metabolism and protein composition of sdLDL and lbLDL in six subjects with combined hyperlipidemia on placebo and rosuvastatin 40 mg/day. ApoB-100 kinetics in triglyceride rich lipoproteins (TRL), lbLDL (density [d] 1.019-1.044 g/ml), and sdLDL (d 1.044-1.063 g/ml) were determined in the fed state using stable isotope tracers, mass spectrometry, and compartmental modeling. Compared with placebo, rosuvastatin decreased LDL cholesterol and apoB-100 levels in TRL, lbLDL, and sdLDL by significantly increasing the fractional catabolic rate of apoB-100 (TRL +45%; lbLDL +131%; sdLDL +97%), without a change in production...
April 9, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28385702/a-shift-in-apom-s1p-between-hdl-particles-in-women-with-type-1-diabetes-mellitus-is-associated-with-impaired-anti-inflammatory-effects-of-the-apom-s1p-complex
#3
Cecilia Frej, Armando J Mendez, Mario Ruiz, Melanie Castillo, Thomas A Hughes, Björn Dahlbäck, Ronald B Goldberg
OBJECTIVE: Type 1 diabetes mellitus (T1D) patients have an increased risk of cardiovascular disease despite high levels of high-density lipoproteins (HDL). Apolipoprotein M (apoM) and its ligand sphingosine 1-phospate (S1P) exert many of the anti-inflammatory effects of HDL. We investigated whether apoM and S1P are altered in T1D and whether apoM and S1P are important for HDL functionality in T1D. APPROACH AND RESULTS: ApoM and S1P were quantified in plasma from 42 healthy controls and 89 T1D patients...
April 6, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28359281/17%C3%AE-estradiol-regulates-the-expression-of-apolipoprotein-m-through-estrogen-receptor-%C3%AE-specific-binding-motif-in-its-promoter
#4
Jiang Wei, Yang Yu, Guang-Hua Luo, Yue-Hua Feng, Yuan-Ping Shi, Jun Zhang, Qin-Feng Mu, Miao-Mei Yu, Li-Li Pan, Maria Berggren-Söderlund, Peter Nilsson-Ehle, Xiao-Ying Zhang, Ning Xu
BACKGROUND: We have previously demonstrated that estrogen could significantly enhance expression of apolipoprotein M (apoM), whereas the molecular basis of its mechanism is not fully elucidated yet. To further investigate the mechanism behind the estrogen induced up-regulation of apoM expression. RESULTS: Our results demonstrated either free 17β-estradiol (E2) or membrane-impermeable bovine serum albumin-conjugated E2 (E2-BSA) could modulate human apoM gene expression via the estrogen receptor alpha (ER-α) pathway in the HepG2 cells...
March 31, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28351665/apob-and-apom-new-aspects-of-lipoprotein-biology-in-uremia-induced-atherosclerosis
#5
Christina Christoffersen, Emil D Bartels, Annemarie Aarup, Lars B Nielsen, Tanja X Pedersen
Chronic kidney disease affects as much as 13% of the population, and is associated with a markedly increased risk of developing cardiovascular disease. One of the underlying reasons is accelerated development of atherosclerosis. This can be ascribed both to increased occurrence of traditional cardiovascular risk factors, and to risk factors that may be unique to patients with chronic kidney disease. The latter is reflected in the observation that the current treatment modalities, mainly directed against traditional risk factors, are insufficient to prevent cardiovascular disease in the patient with chronic kidney disease...
March 25, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28321011/vehicle-dependent-effects-of-sphingosine-1-phosphate-on-plasminogen-activator-inhibitor-1-expression
#6
Chiharu Takahashi, Makoto Kurano, Masako Nishikawa, Kuniyuki Kano, Tomotaka Dohi, Katsumi Miyauchi, Hiroyuki Daida, Tomo Shimizu, Junken Aoki, Yutaka Yatomi
AIM: Sphingosine 1-phosphate (S1P) has been suggested to be a positive regulator of plasminogen activator inhibitor 1 (PAI-1) in adipocytes, while some studies are not consistent with this prothrombotic property of S1P. Since S1P is bound to apolipoprotein M (apoM) on HDL or to albumin in plasma, we compared the properties of these two forms on the PAI-1 induction. METHODS: We investigated the associations of S1P, apoM, and PAI-1 concentrations in the plasma of normal coronary artery (NCA), stable angina pectoris (SAP), and acute coronary syndrome (ACS) subjects (n=32, 71, and 38, respectively)...
March 17, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28315462/implications-of-cerebrovascular-atp-binding-cassette-transporter-g1-abcg1-and-apolipoprotein-m-in-cholesterol-transport-at-the-blood-brain-barrier
#7
Alexandra Carmen Kober, Anil Paul Chirackal Manavalan, Carmen Tam-Amersdorfer, Andreas Holmér, Ahmed Saeed, Elham Fanaee-Danesh, Martina Zandl, Nicole Maria Albrecher, Ingemar Björkhem, Gerhard M Kostner, Björn Dahlbäck, Ute Panzenboeck
Impaired cholesterol/lipoprotein metabolism is linked to neurodegenerative diseases such as Alzheimer's disease (AD). Cerebral cholesterol homeostasis is maintained by the highly efficient blood-brain barrier (BBB) and flux of the oxysterols 24(S)-hydroxycholesterol and 27-hydroxycholesterol, potent liver-X-receptor (LXR) activators. HDL and their apolipoproteins are crucial for cerebral lipid transfer, and loss of ATP binding cassette transporters (ABC)G1 and G4 results in toxic accumulation of oxysterols in the brain...
March 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28273134/gene-set-meta-analysis-of-lung-cancer-identifies-pathway-related-to-systemic-lupus-erythematosus
#8
Albert Rosenberger, Melanie Sohns, Stefanie Friedrichs, Rayjean J Hung, Gord Fehringer, John McLaughlin, Christopher I Amos, Paul Brennan, Angela Risch, Irene Brüske, Neil E Caporaso, Maria Teresa Landi, David C Christiani, Yongyue Wei, Heike Bickeböller
INTRODUCTION: Gene-set analysis (GSA) is an approach using the results of single-marker genome-wide association studies when investigating pathways as a whole with respect to the genetic basis of a disease. METHODS: We performed a meta-analysis of seven GSAs for lung cancer, applying the method META-GSA. Overall, the information taken from 11,365 cases and 22,505 controls from within the TRICL/ILCCO consortia was used to investigate a total of 234 pathways from the Kyoto Encyclopedia of Genes and Genomes (KEGG) database...
2017: PloS One
https://www.readbyqxmd.com/read/28245483/the-effect-of-apom-polymorphism-associated-with-hdl-metabolism-on-obese-korean-adults
#9
Myoungsook Lee, Jung-Im Kim, Seojin Choi, Yangsoo Jang, Sungbin Richard Sorn
BACKGROUND: Apolipoprotein M (apoM) is a recently identified apolipoprotein associated with high-density lipoprotein (HDL) in coronary artery disease (CAD), but the association between apoM polymorphism and obesity has not been reported. AIM: To investigate the association between apoM polymorphism and obesity prevalence in 584 Korean adults. METHODS: A total of 584 individuals aged between 30 and 80 years were recruited from Yonsei Medical Center in Seoul, Korea, and divided into obese (OB; body mass index, BMI ≥25) and nonobese (non-OB; BMI <25) groups...
2016: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/28209220/very-low-density-lipoprotein-associated-apolipoproteins-predict-cardiovascular-events-and-are-lowered-by-inhibition%C3%A2-of%C3%A2-apoc-iii
#10
Raimund Pechlaner, Sotirios Tsimikas, Xiaoke Yin, Peter Willeit, Ferheen Baig, Peter Santer, Friedrich Oberhollenzer, Georg Egger, Joseph L Witztum, Veronica J Alexander, Johann Willeit, Stefan Kiechl, Manuel Mayr
BACKGROUND: Routine apolipoprotein (apo) measurements for cardiovascular disease (CVD) are restricted to apoA-I and apoB. Here, the authors measured an unprecedented range of apolipoproteins in a prospective, population-based study and relate their plasma levels to risk of CVD. OBJECTIVES: This study sought to measure apolipoproteins directly by mass spectrometry and compare their associations with incident CVD and to obtain a system-level understanding of the correlations of apolipoproteins with the plasma lipidome and proteome...
February 21, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28179022/hdl-associated-apom-is-anti-apoptotic-by-delivering-sphingosine-1-phosphate-to-s1p1-s1p3-receptors-on-vascular-endothelium
#11
Mario Ruiz, Hiromi Okada, Björn Dahlbäck
BACKGROUND: High-density Lipoprotein (HDL) attenuates endothelial cell apoptosis induced by different cell-death stimuli such as oxidation or growth factor deprivation. HDL is the main plasma carrier of the bioactive lipid sphingosine 1-phosphate (S1P), which it is a signaling molecule that promotes cell survival in response to several apoptotic stimuli. In HDL, S1P is bound to Apolipoprotein M (ApoM), a Lipocalin that is only present in around 5% of the HDL particles. The goal of this study is to characterize ApoM-bound S1P role in endothelial apoptosis protection and the signaling pathways involved...
February 8, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28126827/involvement-of-cetp-cholesteryl-ester-transfer-protein-in-the-shift-of-sphingosine-1-phosphate-among-lipoproteins-and-in-the-modulation-of-its-functions
#12
Makoto Kurano, Masumi Hara, Hitoshi Ikeda, Kazuhisa Tsukamoto, Yutaka Yatomi
OBJECTIVE: Sphingosine-1-phosphate (S1P) is a vasoprotective lipid mediator. About two thirds of plasma S1P rides on high-density lipoprotein (HDL), and several pleiotropic properties of HDL have been ascribed to S1P. In human subjects, CETP (cholesteryl ester transfer protein) greatly influences HDL quantities. In this study, we attempted to elucidate the roles of CETP in the metabolism of S1P. APPROACH AND RESULTS: We overexpressed CETP in mice that lacked CETP and found that CETP overexpression decreased the HDL level but failed to modulate the levels of S1P and apolipoprotein M (apoM), a carrier of S1P, in the total plasma...
January 26, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28079289/apocrine-metaplasia-found-at-mr-biopsy-is-there-something-to-be-learned
#13
Yiming Gao, Vandana Dialani, Carolynn DeBenedectis, Nicole Johnson, Elena Brachtel, Priscilla Slanetz
The purpose of this study was to determine (a) the frequency of apocrine metaplasia (ApoM) found on MR core biopsy of suspicious findings, and (b) to determine if there are specific MR imaging features that might obviate the need for biopsy. This HIPAA-compliant retrospective study was performed under IRB exemption for quality assurance studies. Patient demographics, MR imaging features, and pathology were reviewed. Breast lesions which underwent MR-guided biopsy, yielding ApoM on pathology analysis were included...
January 12, 2017: Breast Journal
https://www.readbyqxmd.com/read/28073663/apom-hdl-c-and-apom-apoa-i-ratios-are-indicators-of-diabetic-nephropathy-in-healthy-controls-and-type-2-diabetes-mellitus
#14
Puhong Zhang, Jialin Gao, Chun Pu, Gang Feng, Lizhuo Wang, Lizhu Huang, Yao Zhang
BACKGROUND: Apolipoprotein M (apoM) concentrations were decreased in type 2 diabetes mellitus (T2DM). ApoM was selectively expressed in renal tubular epithelial cells. We investigated the changes in plasma apoM concentrations in diabetic nephropathy (DN) patients and the potential of apoM as a biomarker of DN. METHODS: A total of 96 DN patients and 100 age- and sex-matched diabetic non-nephropathy (non-DN) patients and 110 healthy controls were included. All T2DM patients were divided into 3 groups according to urinary albumin excretion: normoalbuminuria (n=100), microalbuminuria (n=50) and macroalbuminuria (n=46)...
March 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28039587/tgf-%C3%AE-down-regulates-apolipoprotein-m-expression-through-the-tak-1-jnk-c-jun-pathway-in-hepg2-cells
#15
Kun Ren, Zhong-Cheng Mo, Xing Liu, Zhen-Li Tang, Yue Jiang, Xiao-Shan Peng, Qing-Hai Zhang, Jin-Feng Shi, Guang-Hui Yi
Apolipoprotein M (apoM) is a relatively novel apolipoprotein that plays pivotal roles in many dyslipidemia-associated diseases; however, its regulatory mechanisms are poorly understood. Many cytokines have been identified that down-regulate apoM expression in HepG2 cells, among which transforming growth factor-β (TGF-β) exerts the most potent effects. In addition, c-Jun, a member of the activated protein 1 (AP-1) family whose activity is modulated by c-Jun N-terminal kinase (JNK), decreases apoM expression at the transcriptional level by binding to the regulatory element in the proximal apoM promoter...
February 2017: Lipids
https://www.readbyqxmd.com/read/28038379/high-density-lipoprotein-hdl-associated-sphingosine-1-phosphate-s1p-inhibits-macrophage-apoptosis-by-stimulating-stat3-activity-and-survivin-expression
#16
Renata Feuerborn, Susen Becker, Francesco Potì, Petra Nagel, Martin Brodde, Harmut Schmidt, Christina Christoffersen, Uta Ceglarek, Ralph Burkhardt, Jerzy-Roch Nofer
BACKGROUND AND AIMS: Macrophage apoptosis is critically involved in atherosclerosis. We here examined the effect of anti-atherogenic high density lipoprotein (HDL) and its component sphingosine-1-phosphate (S1P) on apoptosis in RAW264.7 murine macrophages. METHODS: Mitochondrial or endoplasmic reticulum-dependent apoptosis was induced by exposure of macrophages to etoposide or thapsigargin/fukoidan, respectively. RESULTS: Cell death induced by these compounds was inhibited by S1P as inferred from reduced annexin V binding, TUNEL staining, and caspase 3, 9 and 12 activities...
February 2017: Atherosclerosis
https://www.readbyqxmd.com/read/27927202/positive-association-between-serum-apolipoprotein-m-levels-and-hepatitis-b-virus-dna-load-in-hbeag-negative-chronic-hepatitis-b
#17
Ting Shen, Wei Min Wu, Wen Han Du, Lin Wang, La Gu He, Li Tan, ZeYou Wang, Ruohong Chen, Min Hu, Ya Ping Ren
BACKGROUND: Hepatitis virus B (HBV) has infected millions of people worldwide. Notably, such infections can be associated with hepatic complications. Levels of apolipoprotein M (apoM), a component of high-density lipoprotein (HDL), are known to be significantly elevated in patients with chronic hepatitis B (CHB). The aim of this study was to investigate the relationship between HBV DNA load in serum and serum apoM levels in patients with CHB. METHODS: A total of 73 HBeAg-negative CHB patients, 50 HBeAg-positive CHB patients, and 79 non-CHB controls were included in the study cohort...
December 7, 2016: Lipids in Health and Disease
https://www.readbyqxmd.com/read/27879252/high-density-lipoprotein-associated-apolipoprotein-m-limits-endothelial-inflammation-by-delivering-sphingosine-1-phosphate-to-the-sphingosine-1-phosphate-receptor-1
#18
Mario Ruiz, Cecilia Frej, Andreas Holmér, Li J Guo, Sinh Tran, Björn Dahlbäck
OBJECTIVE: Plasma high-density lipoproteins (HDL) are potent antiatherogenic and anti-inflammatory particles. However, HDL particles are highly heterogenic in composition, and different HDL-mediated functions can be ascribed to different subclasses of HDL. Only a small HDL population contains apolipoprotein M (ApoM), which is the main plasma carrier of the bioactive lipid mediator sphingosine-1-phosphate (S1P). Vascular inflammation is modulated by S1P, but both pro- and anti-inflammatory roles have been ascribed to S1P...
January 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/27633510/effects-of-hyperlipidaemia-on-plasma-apolipoprotein-m-levels-in-patients-with-type-2-diabetes-mellitus-an-independent-case-control-study
#19
Puhong Zhang, Jialin Gao, Chun Pu, Gang Feng, Lizhuo Wang, Lizhu Huang, Qingsong Tao, Yao Zhang
BACKGROUND: Apolipoprotein M (apoM) is mainly enriched in high-density lipoprotein (HDL) cholesterol and is slightly present in low-density lipoprotein (LDL) cholesterol and very low-density lipoprotein cholesterol. apoM is involved in HDL formation and HDL-mediated reverse cholesterol transport. apoM is also associated with hyperlipidaemia and type 2 diabetes mellitus (T2DM). Significantly high plasma apoM levels are detected in hyperlipidaemia mice with a defective LDL receptor. By contrast, low plasma apoM levels are observed in patients with T2DM, which is often accompanied with hyperlipidaemia...
September 15, 2016: Lipids in Health and Disease
https://www.readbyqxmd.com/read/27617241/postmenopausal-osteoporosis-is-associated-with-serum-chemerin-and-irisin-but-not-with-apolipoprotein-m-levels
#20
Yaprak Engin-Üstün, Emel Kıyak Çağlayan, Ayşe Yeşim Göçmen, Muhammed Fevzi Polat
OBJECTIVES: The objective of this study was to describe the levels of chemerin, irisin and apolipoprotein M (apoM) in women with postmenopausal osteoporosis. METHODS: The study included 88 women with postmenopausal osteoporosis. Based on World Health Organization criteria, women with a T-score of ≤ -2.5 were defined as osteoporotic. In this case-control study, postmenopausal women with T-score > -1 were selected as controls (n = 88) and case-matched in a 1:1 ratio based on age (within 2 years) and body mass index (BMI) (within 1...
August 2016: Journal of Menopausal Medicine
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