Consulta: subjectFacets:"Apolipoprotein E"
Registros recuperados: 13
Data/hora: 10/06/2024 03:44:57

Effects of APOE, APOB and LDLR variants on serum lipids and lack of association with xanthelasma in individuals from Southeastern Brazil
Provedor de dados: Genetics and Molecular Biology
Autores: Nakazone,Marcelo A.; De Marchi,Miguel A.; Pinhel,Marcela A.S.; Barros,Carolina F.D.C.; Júlio,Maysa A.F.; Pinheiro,Anielli; Arazi,Simone S.; Hotta,Júlia K.; Hirata,Mário H.; Hirata,Rosario D.C.; Santos,José E. dos; Souza,Dorotéia R.S.
Xanthelasma might be a clinical manifestation of dyslipidemia, a recognized risk factor for coronary artery disease. We investigated the association of apolipoprotein E (APOE HhaI), apolipoprotein B (APOB XbaI and Ins/Del) and LDL receptor (LDLR AvaII and HincII) gene polymorphisms with lipid profiles in 100 Brazilians with xanthelasma and 100 controls. Allele frequencies were similar in both groups. APOE, APOB and LDLR genotypes were not correlated with differences in the serum lipid profile. In individuals with xanthelasma, the APOB D allele was associated with less chance of having increased LDL-cholesterol (O.R. = 0.16, CI95% = 0.03-0.94, p = 0.042). In the control group, the APOB X+ allele was associated with less chance of having both increased total...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apolipoprotein B; Apolipoprotein E; LDL receptor; Gene polymorphisms; Xanthelasma.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200004

Evolutionary analysis of apolipoprotein E by Maximum Likelihood and complex network methods
Provedor de dados: Genetics and Molecular Biology
Autores: Benevides,Leandro de Jesus; Carvalho,Daniel Santana de; Andrade,Roberto Fernandes Silva; Bomfim,Gilberto Cafezeiro; Fernandes,Flora Maria de Campos.
Abstract Apolipoprotein E (apo E) is a human glycoprotein with 299 amino acids, and it is a major component of very low density lipoproteins (VLDL) and a group of high-density lipoproteins (HDL). Phylogenetic studies are important to clarify how various apo E proteins are related in groups of organisms and whether they evolved from a common ancestor. Here, we aimed at performing a phylogenetic study on apo E carrying organisms. We employed a classical and robust method, such as Maximum Likelihood (ML), and compared the results using a more recent approach based on complex networks. Thirty-two apo E amino acid sequences were downloaded from NCBI. A clear separation could be observed among three major groups: mammals, fish and amphibians. The results...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apolipoprotein E; Phylogeny; Complex network; Maximum Likelihood.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000400665

Analysis of apolipoprotein E genetic polymorphism in a large ethnic Hakka population in southern China
Provedor de dados: Genetics and Molecular Biology
Autores: Zhong,Zhixiong; Wu,Heming; Wu,Hesen; Zhao,Pingsen.
Abstract There is currently no data about the genetic variations of APOE in Hakka population in China. The aim of this study was to analyze the allelic and genotypic frequencies of APOE gene polymorphisms in a large ethnic Hakka population in southern China. The APOE genes of 6,907 subjects were genotyped by the gene chip platform. The allele and genotype frequencies were analyzed. Results showed that the ∊3 allele had the greatest frequency (0.804) followed by ∊2 (0.102), and ∊4 (0.094), while genotype ∊3/∊3 accounted for 65.43% followed by ∊2/∊3 (15.85%), ∊3/∊4 (14.13%), ∊2/∊4 (3.01%), ∊4/∊4 (0.84%), and ∊2/∊2 (0.74%) in all subjects. The frequencies of the ∊4 allele in Chinese populations were lower than Mongolian and Javanese, while the frequencies of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apolipoprotein E; Genetic polymorphism; Hakka; Southern China; Genotyping.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000500742

Effect of Lactobacillus delbrueckii on cholesterol metabolism in germ-free mice and on atherogenesis in apolipoprotein E knock-out mice
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Portugal,L.R.; Gonçalves,J.L.; Fernandes,L.R.; Silva,H.P.S.; Arantes,R.M.E.; Nicoli,J.R.; Vieira,L.Q.; Alvarez-Leite,J.I.
Elevated blood cholesterol is an important risk factor associated with atherosclerosis and coronary heart disease. Several studies have reported a decrease in serum cholesterol during the consumption of large doses of fermented dairy products or lactobacillus strains. The proposed mechanism for this effect is the removal or assimilation of intestinal cholesterol by the bacteria, reducing cholesterol absorption. Although this effect was demonstrated in vitro, its relevance in vivo is still controversial. Furthermore, few studies have investigated the role of lactobacilli in atherogenesis. The aim of the present study was to determine the effect of Lactobacillus delbrueckii on cholesterol metabolism in germ-free mice and the possible hypocholesterolemic and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lactobacillus; Atherosclerosis; Apolipoprotein E; Cholesterol; Germ-free mice.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000500010

Association of apolipoprotein E polymorphism in late-onset Alzheimer's disease and vascular dementia in Brazilians
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Souza,D.R.S.; De Godoy,M.R.; Hotta,J.; Tajara,E.H.; Brandão,A.C.; Pinheiro Júnior,S.; Tognola,W.A.; Dos Santos,J.E.
The genetic basis for dementias is complex. A common polymorphism in the apolipoprotein E (APOE) gene is considered to be the major risk factor in families with sporadic and late-onset Alzheimer's disease as well as in the general population. The distribution of alleles and genotypes of the APOE gene in late-onset Alzheimer's disease (N = 68), other late-life dementias (N = 39), and in cognitively normal controls (N = 58) was determined, as also was the risk for Alzheimer's disease associated with the epsilon4 allele. Peripheral blood samples were obtained from a total of 165 individuals living in Brazil aged 65-82 years. Genomic DNA was amplified by the polymerase chain reaction and the products were digested with HhaI restriction enzyme. APOE epsilon2...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Alzheimer's disease; Vascular dementia; Dementia; Apolipoprotein E; Aging; Genetic polymorphisms.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000700013

Oral rapamycin attenuates atherosclerosis without affecting the arterial responsiveness of resistance vessels in apolipoprotein E-deficient mice
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Gadioli,A.L.N.; Nogueira,B.V.; Arruda,R.M.P.; Pereira,R.B.; Meyrelles,S.S.; Arruda,J.A.; Vasquez,E.C.
The objective of the present study was to assess the effects of the immunosuppressant rapamycin (Rapamune®, Sirolimus) on both resistance vessel responsiveness and atherosclerosis in apolipoprotein E-deficient 8-week-old male mice fed a normal rodent diet. Norepinephrine (NE)-induced vasoconstriction, acetylcholine (ACh)- and sodium nitroprusside (SNP)-induced vasorelaxation of isolated mesenteric bed, and atherosclerotic lesions were evaluated. After 12 weeks of orally administered rapamycin (5 mg·kg-1·day-1, N = 9) and compared with untreated (control, N = 9) animals, rapamycin treatment did not modify either NE-induced vasoconstriction (maximal response: 114 ± 4 vs 124 ± 10 mmHg, respectively) or ACh- (maximal response: 51 ± 8 vs 53 ± 5%, respectively)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rapamycin; Sirolimus; Atherosclerosis; Vascular responsiveness; Apolipoprotein E; Mice.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001200012

ApoE polymorphisms and diarrheal outcomes in Brazilian shanty town children
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Oriá,R.B.; Patrick,P.D.; Oriá,M.O.B.; Lorntz,B.; Thompson,M.R.; Azevedo,O.G.R.; Lobo,R.N.B.; Pinkerton,R.F.; Guerrant,R.L.; Lima,A.A.M.
A series of studies have shown that the heavy burdens of diarrheal diseases in the first 2 formative years of life in children living in urban shanty towns have negative effects on physical and cognitive development lasting into later childhood. We have shown that APOE4 is relatively common in shanty town children living in Brazil (13.4%) and suggest that APOE4 has a protective role in cognitive development as well as weight-for-height in children with heavy burdens of diarrhea in early childhood (64/123; 52%), despite being a marker for cognitive decline with Alzheimer’s and cardiovascular diseases later in life. APOE2 frequency was higher among children with heaviest diarrhea burdens during the first 2 years of life, as detected by PCR using the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apolipoprotein E; Malnutrition; Diarrhea; Children.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000300005

Apolipoprotein E polymorphism distribution in an elderly Brazilian population: the Bambuí Health and Aging Study
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Fuzikawa,A.K.; Peixoto,S.V.; Taufer,M.; Moriguchi,E.H.; Lima-Costa,M.F.
Apolipoprotein E (ApoE) is one of the most extensively studied genes in the context of aging, but there are few population-based studies on ApoE polymorphism in the elderly in developing countries. The objective of the present study was to assess ApoE allele and genotype distribution in a large elderly community-based sample and its association with age, sex and skin color. Participants included 1408 subjects (80.8% of all residents aged ³60 years) residing in Bambuí city, MG, Brazil. The DNA samples were subjected to the polymerase chain reaction amplification, followed by the restriction fragment length polymorphism technique, with digestion by HhaI. Analysis was carried out taking into consideration the six ApoE genotypes (e3/e3, e3/e4, e2/e3, e4/e4,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apolipoprotein E; Elderly; Prevalence; Brazil.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007001100002

Association between apolipoprotein E genotype, serum lipids, and colorectal cancer in Brazilian individuals
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Souza,D.R.S.; Nakazone,M.A.; Pinhel,M.A.S.; Alvares,R.M.; Monaco,A.C.; Pinheiro,A.; Barros,C.F.D.C.; Cury,P.M.; Cunrath,G.S.; Netinho,J.G.
We evaluated genetic variants of apolipoprotein E (APOE HhaI) and their association with serum lipids in colorectal cancer (CRC), together with eating habits and personal history. Eight-seven adults with CRC and 73 controls were studied. APOE*2 (rs7412) and APOE*4 (rs429358) were identified by polymerase chain reaction-restriction fragment length polymorphism. APOE gene polymorphisms were similar in both groups, but the ε4/ε4 genotype (6%) was present only in controls. The patients had reduced levels (mean ± SD) of total cholesterol and low-density lipoprotein cholesterol fraction (180.4 ± 49.5 and 116.1 ± 43.1 mg/dL, respectively) compared to controls (204.2 ± 55.6, P = 0.135 and 134.7 ± 50.8 mg/dL; P = 0.330, respectively) indicating that they were not...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apolipoprotein E; Colorectal cancer; Lipid profile; Polymorphisms.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000500001

Alanyl-glutamine attenuates 5-fluorouracil-induced intestinal mucositis in apolipoprotein E-deficient mice
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Araújo,C.V.; Lazzarotto,C.R.; Aquino,C.C.; Figueiredo,I.L.; Costa,T.B.; de Oliveira Alves,L.A.; Ribeiro,R.A.; Bertolini,L.R.; Lima,A.A.M.; Brito,G.A.C.; Oriá,R.B.
Apolipoprotein E (APOE=gene, apoE=protein) is a known factor regulating the inflammatory response that may have regenerative effects during tissue recovery from injury. We investigated whether apoE deficiency reduces the healing effect of alanyl-glutamine (Ala-Gln) treatment, a recognized gut-trophic nutrient, during tissue recovery after 5-FU-induced intestinal mucositis. APOE-knockout (APOE-/-) and wild-type (APOE+/+) C57BL6J male and female mice (N=86) were given either Ala-Gln (100 mM) or phosphate buffered saline (PBS) by gavage 3 days before and 5 days after a 5-fluorouracil (5-FU) challenge (450 mg/kg, via intraperitoneal injection). Mouse body weight was monitored daily. The 5-FU cytotoxic effect was evaluated by leukometry. Intestinal villus...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apolipoprotein E; 5-Fluorouracil; Alanyl-glutamine; Mucositis; Mice.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000600493

Association of ApoE polymorphisms with prevalent hypertension in 1406 older adults: the Bambuí Health Aging Study (BHAS)
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Fuzikawa,A.K.; Peixoto,S.V.; Taufer,M.; Moriguchi,E.H.; Lima-Costa,M.F.
Apolipoprotein E (ApoE) polymorphism influences lipid metabolism, but its association with arterial hypertension is controversial. The objective of this study was to examine the association between ApoE polymorphism and prevalent hypertension in a large unselected population of older adults. Participants from the baseline of the Bambuí Health Aging Study whose ApoE genes had been genotyped were selected for this study (N = 1406, aged 60-95 years). These subjects represented 80.7% of the total elderly residents in Bambuí city, MG, Brazil. Hypertension was defined as a systolic blood pressure ³140 mmHg and/or a diastolic blood pressure ³90 mmHg, or the use of anti-hypertensive medication. The exposure variable was the ApoE genotype as follows: e3 carriers,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Apolipoprotein E; Hypertension; Low-density lipoprotein cholesterol; Triglycerides; Lipid metabolism.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000200002

Lipoprotein lipase PvuII polymorphism is associated with variations in serum lipid levels in non-diabetic pregnant women
Provedor de dados: Brazilian Journal of Medical and Biological Research
Autores: Sepetiba,R.J.C.; Andrade,J.; Hirata,R.D.C.; Hirata,M.H.; Sepetiba,C.R.G.; Nakamura,Y.; Matsumoto,L.O.; Cavalli,S.A.; Bertolami,M.C.
The aim of the present study was to determine if there is an association between the single nucleotide polymorphisms (SNPs) of the lipoprotein lipase (LPL) and apolipoprotein E (apo E) genes and the serum lipid profile in pregnancy and puerperium. Non-diabetic women of European descent in the third semester of pregnancy (N = 120) were selected. Those with diseases or other condition that could modify their lipid profile were excluded from the study (N = 32). Serum lipids were measured by routine laboratory procedures and genomic DNA was extracted by a salting out method. LPL (PvuII and HindIII) and apo E (HhaI) SNPs were detected by the polymerase chain reaction and restriction fragment length polymorphism. Categorical and continuous variables were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lipoprotein lipase; LPL PvuII polymorphism; Apolipoprotein E; Single nucleotide polymorphism; Serum lipids; Non-diabetic pregnancy.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000700005

Association between diet and polymorphisms in individuals with statin-controlled dyslipidaemia grouped according to oxidative stress biomarkers
Provedor de dados: Brazilian Journal of Pharmaceutical Sciences
Autores: Botelho,Patrícia Borges; Fioratti,Cyntia Okoshi; Rogero,Marcelo Macedo; Barroso,Lucia Pereira; Bertolami,Marcelo Chiara; Castro,Inar Alves.
The objective of this study was to investigate whether differences in diet and in single-nucleotide polymorphisms (SNPs) found in paraoxonase-1 (PON-1), 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR), cholesterol ester transfer protein (CETP) and apolipoprotein E (APOE) genes, are associated with oxidative stress biomarkers and consequently with susceptibility of low-density cholesterol (LDL) to oxidation. A multivariate approach was applied to a group of 55 patients according to three biomarkers: plasma antioxidant activity, malondialdehyde and oxidized LDL (oxLDL) concentrations. Individuals classified in Cluster III showed the worst prognoses in terms of antioxidant activity and oxidative status. Individuals classified in Cluster I presented...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Oxidative stress/biomarkers; Single-nucleotide polymorphism (SNPs); Lipoproteins/oxidation; Statins; Apolipoprotein E.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502012000100005