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Evaluation of Apolipoprotein A5 Polymorphism in Coronary- Heart Disease Patients  [cached]
Somayeh Haqparast,Peyman Izadpanah,Abbas Abdollahi,Sohrab Najafipoor
Journal of Fasa University of Medical Sciences , 2012,
Abstract: Background and Objectives: Apolipoprotein A5 (APOA5) gene is important in determining plasma triglyceride levels, a major cardiovascular disease risk factor. Mutation in this gene affected plasma triglyceride level. We looked for possible associations of the APOA5 gene polymorphism S19W with coronary heart disease (CHD) in a sample of Iranian population. Materials and Methods: A total of 73 CHD patients and 55 controls were genotyped by polymerase chain reaction–restriction fragment length polymorphism (PCR-RFLP) for this single nucleotide polymorphism. Serum lipids and Fast Blood Sugar concentrations were measured in all subjects with enzymatic method. Results: Allele frequencies observed in our population were 0.041 for the W allele and 0.959 for the S allele which are similar to other populations (p>0.05). There is no evidence that APOA5 S19W, is a risk factor of CHD in our sample (p>0.05). In addition, we observed no association between the APOA5 W allele and elevated plasma TG levels (p>0.05) in the CHD group. This result was also present in the control group (p>0.05). Conclusion: The APO A5 gene polymorphism in S19W gene has no association with the high susceptibility to CHD.
Interactions of the Apolipoprotein A5 Gene Polymorphisms and Alcohol Consumption on Serum Lipid Levels  [PDF]
Rui-Xing Yin,Yi-Yang Li,Wan-Ying Liu,Lin Zhang,Jin-Zhen Wu
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0017954
Abstract: Little is known about the interactions of apolipoprotein (Apo) A5 gene polymorphisms and alcohol consumption on serum lipid profiles. The present study was undertaken to detect the interactions of ApoA5–1131T>C, c.553G>T and c.457G>A polymorphisms and alcohol consumption on serum lipid levels.
Apolipoprotein A1/C3/A5 haplotypes and serum lipid levels
Rui-Xing Yin, Yi-Yang Li, Chao-Qiang Lai
Lipids in Health and Disease , 2011, DOI: 10.1186/1476-511x-10-140
Abstract: A total of 1030 unrelated subjects (492 males and 538 females) aged 15-89 were randomly selected from our previous stratified randomized cluster samples. Genotyping of the ApoA1 -75 bp G>A, ApoC3 3238C>G, ApoA5 -1131T>C, ApoA5 c.553G>T and ApoA5 c.457G>A was performed by polymerse chain reaction and restriction fragment length polymorphism combined with gel electrophoresis, and then confirmed by direct sequencing. Pair-wise linkage disequilibria and haplotype analysis among the five SNPs were estimated.The levels of high-density lipoprotein cholesterol (HDL-C) and ApoA1 were lower in males than in femailes (P < 0.05 for each). The allelic and genotypic frequencies of the SNPs were no significant difference between males and females except ApoC3 3238C>G. There were 11 haplotypes with a frequency >1% identified in the cluster in our population. At the global level, the haplotypes comprised of all five SNPs were significantly associated with all seven lipid traits. In particular, haplotype G-G-C-C-A (6%; in the order of ApoA5 c.553G>T, ApoA5 c.457G>A, ApoA5 -1131T>C, ApoC3 3238C>G, and ApoA1 -75bp G>A) and G-A-T-C-G (4%) showed consistent association with total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), ApoA1, ApoB, and the ApoA1/ApoB ratio. In addition, carriers of haplotype G-G-T-C-G (26%) had increased serum concentration of HDL-C and ApoA1, whereas carriers of G-G-C-G-G (15%) had high concentrations of TC, triglyceride (TG) and ApoB. We also found that haplotypes with five SNPs explain much more serum lipid variation than any single SNP alone, especially for TG (4.4% for haplotype vs. 2.4% for -1131T>C max based on R-square) and HDL-C (5.1% for haplotype vs. 0.9% for c.553G>T based on R-square). Serum lipid parameters were also correlated with genotypes and several environment factors.Several common SNPs and their haplotypes in the ApoA1/C3/A5 gene cluster are closely associated with modifications of serum lipid parameters in the general Chinese
蛋源性抗菌肽的研究进展  [PDF]
食品科学 , 2013,
Abstract: ?抗菌肽具有分子质量小、热稳定性高、抗菌谱广等特点,已成为生物领域研究的热点之一,而富含蛋白质的禽蛋成为分离天然或制备抗菌肽的研究对象。本文综述蛋源性抗菌肽的来源、抗菌活性以及结构与活性之间的关系,提出蛋源性抗菌肽研究中存在的问题,并对蛋源性抗菌肽的研究与应用进行展望。
Analysis of apolipoprotein A5 gene polymorphisms in Hubei Han people

DING Yan,ZHU Ming-An,ZHOU You-Li,WANG Zhi-Xiao,YANG Gong-Li,

遗传 , 2007,
Abstract: Polymerase chain reaction-restriction fragments length polymorphism (PCR-RFLP) was used to explore the distribution of apolipoprotein A5 gene-1131T>C and 56C>G polymorphisms in 257 healthy Hubei Han people. The following results were calculated: the frequency of-1131TT genotype was 50.9%, far more than that of ?1131TC and ?1131CC genotypes (32.9% and 16.2%, respectively). The number of T allele carriers was higher than that of C carriers, and their respective frequencies were 0.675 and 0.325. There were 56GG and 56GC genotypes, but only 2 individuals in all subjects carried the G allele, the frequency of which was low than 5%. Furthermore, the frequency of genotypes and alleles in apoa5 ?1131T>C and 56C>G polymorphisms was clearly different from other races and areas. We conclude that the apoa5 ?1131T>C variation should be considered a single nucleotide polymorphism, but the 56C>G variation should be considered as a mutation instead.
Impacto de la apolipoproteína A5 en el riesgo cardiovascular: Modulaciones genéticas y ambientales Impact of apolipoprotein A5 on cardiovascular risk: Genetic and environmental modulation
Revista médica de Chile , 2010,
Abstract: Triglyceride concentrations are an independent risk factor for coronary heart disease. Apolipoprotein A5 gene (APOA5) has an important role determining triglyceride metabolism and it is a potential cardiovascular risk. However the mechanisms for these actions are not well-known. Despite the different allelic frequency of its major polymorphisms in different populations, multiple studies have shown consistent associations between these variants and fasting triglycerides. Variations in the APOA5 gene have also been associated with postprandial triglycerides, as well as with different sizes of lipoproteins and other markers. Moreover, some of the APOA5 gene variants have been associated with ischemic heart disease, stroke, and carotid intima media thickness, although the references on this issue are scanty and contradictory. This may be due to the presence of gene-environment interactions that have been poorly studied until now. Among the few studies that have examined the infuence of environmental factors on possible genetic variations, the most important are those that contemplate possible gene-diet interactions. However, the evidence is still scarce and more research is required in the feld of nutrigenomics. To understand the impact of this gene on cardiovascular disease, we review the genetic functionality and variability of APOA5, its associations with intermediate and fnal phenotypes and gene-environment interactions detected.
Lipoprotein lipase activity and mass, apolipoprotein C-II mass and polymorphisms of apolipoproteins E and A5 in subjects with prior acute hypertriglyceridaemic pancreatitis
Inmaculada Coca-Prieto, Pedro Valdivielso, Gunilla Olivecrona, María Ariza, José Rioja, Pilar Font-Ugalde, Carlota García-Arias, Pedro González-Santos
BMC Gastroenterology , 2009, DOI: 10.1186/1471-230x-9-46
Abstract: Twenty-four survivors of acute hypertriglyceridaemic pancreatitis (cases) and 31 patients with severe hypertriglyceridaemia (controls) were included. Clinical and anthropometrical data, chylomicronaemia, lipoprotein profile, postheparin lipoprotein lipase mass and activity, hepatic lipase activity, apolipoprotein C II and CIII mass, apo E and A5 polymorphisms were assessed.Only five cases were found to have LPL mass and activity deficiency, all of them thin and having the first episode in childhood. No cases had apolipoprotein CII deficiency. No significant differences were found between the non-deficient LPL cases and the controls in terms of obesity, diabetes, alcohol consumption, drug therapy, gender distribution, evidence of fasting chylomicronaemia, lipid levels, LPL activity and mass, hepatic lipase activity, CII and CIII mass or apo E polymorphisms. However, the SNP S19W of apo A5 tended to be more prevalent in cases than controls (40% vs. 23%, NS).Primary defects in LPL and C-II are rare in survivors of acute hypertriglyceridaemic pancreatitis; lipase activity measurements should be restricted to those having their first episode during chilhood.Among patients with acute pancreatitis, 1.3 to 3.5% are due to hypertriglyceridaemia, also known as hypertriglyceridaemic pancreatitis [1,2], some times relapsing and being even more severe than lithiasic acute pancreatitis [3]. Acute hypertriglyceridaemic pancreatitis forms part of the Chylomicronaemia Syndrome, defined as the presence of one or more of the typical signs (eruptive xanthomas, lipidaemia retinalis, recurrent abdominal pain or acute pancreatitis) in a patient with plasma triglyceride concentrations >22.58 mmol/L[4].Genetic causes of the syndrome are rare and include deficiency of lipoprotein lipase (LPL), apolipoprotein C-II, and familial inhibitor of LPL. Other genes are also involved in the catabolism of chylomicrons, such as those for apolipoprotein E, apolipoprotein A-V [5] and glycosylphosphatidyli
Association of the Apolipoprotein A5 Gene ?1131T>C Polymorphism with Serum Lipids in Korean Subjects: Impact of Sasang Constitution
Kwang Hoon Song,Sung-Gon Yu,Seongwon Cha,Jong Yeol Kim
Evidence-Based Complementary and Alternative Medicine , 2012, DOI: 10.1155/2012/598394
Abstract: Apolipoprotein A5 (APOA5) was identified as a strong modulator of serum lipids. Moreover, an APOA5 gene −1131T>C polymorphism has been associated with serum lipids, but the results are inconsistent according to ethnic and racial groups. We have genotyped and analyzed 1,619 outpatients of Korean oriental medicine hospitals who were classified into three Sasang constitution groups (SCGs), So-Yang (SY), So-Eum (SE), and Tae-Eum (TE). There were no significant difference in the distribution of the APOA5 −1131T>C genotype among the three SCGs. Subjects with the C allele in SY and TE showed significantly lower serum high-density lipoprotein cholesterol (HDL-C) and higher triglyceride (TG) levels than noncarriers of the C allele. These results show the differences in the prevalence of decreasing serum HDL-C and elevating serum TG levels along with APOA5 −1131T>C polymorphism according to SCG and suggest that SCG may act as a significant risk factor for hypo-HDL-C-emia and hypertriglyceridemia susceptibility.
Association of the apolipoprotein A5 gene -1131 T>C polymorphism with fasting blood lipids: a meta-analysis in 37859 subjects
Tongfeng Zhao, Jiangpei Zhao
BMC Medical Genetics , 2010, DOI: 10.1186/1471-2350-11-120
Abstract: We limited our analysis to the following four blood lipid variables: total cholesterol (TC), triglycerides (TG), low density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C). Subjects were confined to adults who were at least 18 years old. A dominant model was used for this meta-analysis. 37 studies with 37859 subjects were included in this meta-analysis.The results showed that the carriers of -1131C allele have higher blood TC and TG than the non-carriers: standardized mean difference (SMD) = 0.08, 95% confidence interval (CI, 0.05, 0.11), P < 0.00001, Pheterogeneity = 0.42, and SMD = 0.31, 95% CI (0.27, 0.34), P < 0.00001, Pheterogeneity = 0.0003, respectively. Significant association between the -1131 T>C polymorphism and lower blood HDL-C was also detected under the dominant model: SMD = -0.17, 95% CI (-0.21, -0.14), P < 0.00001, Pheterogeneity = 0.003.Our meta-analysis supports the strong association of the APOA5 -1131 T>C polymorphism with higher levels of TC and TG, and lower levels of HDL-C.Hyperlipidemia, which is considered to be one of the most important risk factors for coronary heart disease (CHD) and stroke, is characterized by the derangements of one or many of the lipids: elevations of total cholesterol (TC), low density lipoprotein cholesterol (LDL-C) and/or triglycerides (TG), or low levels of high-density lipoprotein cholesterol (HDL-C) [1]. Although a large number of studies have tried to elucidate the pathogenesis of the disease, the exact underlying mechanisms are still not completely understood [2]. In recent years, much has been learned about specific genes that influence hyperlipidemia [3]. However, due to various reasons, including considerable heterogeneity of the disease, the identification of susceptibility genes is difficult and most associations have not been replicated [3].More recently, apolipoprotein A5 (APOA5) was identified as a strong modulator of blood lipids [4]. The APOA5 is predominantly synth
Genetic Polymorphism of Apolipoprotein A5 Gene and Susceptibility to Type 2 Diabetes Mellitus: A Meta-Analysis of 15,137 Subjects  [PDF]
Yan-Wei Yin, Qian-Qian Sun, Pei-Jian Wang, Li Qiao, Ai-Min Hu, Hong-Li Liu, Qi Wang, Zhi-Zhen Hou
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0089167
Abstract: Background Several studies have investigated whether the polymorphism in the apolipoprotein A5 (APOA5) is associated with type 2 diabetes mellitus (T2DM) risk. However, those studies have produced inconsistent results. The purpose of this study was to investigate whether the APOA5 -1131T/C polymorphism (rs662799) confers significant susceptibility to T2DM using a meta-analysis. Methods PubMed, Embase, Web of Science, Cochrane database, CBMdisc, CNKI and Google Scholar were searched to get the genetic association studies. All statistical analyses were done with Stata 11.0. Results A total of 19 studies included 4,767 T2DM cases and 10,370 controls (four studies involving 555 T2DM cases and 2958 controls were performed among Europeans and 15 studies involving 4212 T2DM cases and 7412 controls were performed among Asians) were combined showing significant association between the APOA5 -1131T/C polymorphism and T2DM risk (for C allele vs. T allele: OR = 1.28, 95% CI = 1.17–1.40, p<0.00001; for C/C vs. T/T: OR = 1.57, 95% CI = 1.35–1.83, p<0.00001; for C/C vs. T/C+T/T: OR = 1.36, 95% CI = 1.18–1.57, p<0.0001; for C/C+T/C vs. T/T: OR = 1.32, 95% CI = 1.16–1.51, p<0.0001). In the subgroup analysis by ethnicity, significant association was also found among Asians (for C allele vs. T allele: OR = 1.31, 95% CI = 1.22–1.40, p<0.00001; for C/C vs. T/T: OR = 1.61, 95% CI = 1.38–1.88, p<0.00001; for C/C vs. T/C+T/T: OR = 1.39, 95% CI = 1.20–1.61, p<0.0001; for C/C+T/C vs. T/T: OR = 1.42, 95% CI = 1.25–1.62, p<0.00001). However, no significant association was found between the APOA5 -1131T/C polymorphism and T2DM risk among Europeans. Conclusions The present meta-analysis suggests that the APOA5 -1131T/C polymorphism is associated with an increased T2DM risk in Asian population.
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