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Arq. bras. oftalmol ; 78(2): 85-88, Mar-Apr/2015. tab
Article in English | LILACS | ID: lil-744288

ABSTRACT

Purpose: This study aimed to evaluate the association of age-related macular degeneration (AMD) with apolipoprotein E (APOE) variants and serum lipid profiles, including levels and fractions of total serum cholesterol (TC), low-density lipoprotein cholesterol (LDLc), and high-density lipoprotein cholesterol (HDLc), and triglycerides (TG). Methods: Genotyping of APOE-HhaI was performed in 134 patients (study group, SG) and 164 individuals without AMD (control group, CG), aged 50-89 years. Lipid profiles were analyzed in a subgroup of 30 subjects of both groups, matched according to age and sex. The significance level was set at P<0.05. Results: APOE E3/E3 was more prevalent (SG=74.6%; CG=77.4%), with no difference between both groups (P=0.667). The same result was observed for risk genotypes (APOE E -/2: SG=7.4%; CG=10.3%, P=0.624). Serum levels of TC, LDLc, and TG revealed similar median values between SG (193.5, 116, and 155 mg/dL, respectively) and CG (207.5, 120, and 123.5 mg/dL, respectively; P >0.05). For HDLc, a higher median value was observed in SG (53.3 mg/dL) versus CG (42.5 mg/dL; P=0.016). Logistic regression analysis showed the same value, and the HDLc/TC ratio was -11.423 (P=0.014), as also confirmed by an increase in HDLc in SG. The association between lipid profiles and apolipoprotein E genotypes was similar in both groups (P>0.05). Conclusion: APOE-HhaI is not associated with AMD. However, an increase in serum HDLc level appears to exert a protective effect against the disease, irrespective of the genetic variants of apoE. .


Objetivo: Este estudo teve como objetivo avaliar a associação de degeneração macular relacionada à idade (DMRI) com variantes de alipoproteína E (APOE) e perfil lipídico sérico, incluindo níveis séricos de colesterol total (TC) e frações de proteínas relacionadas a receptor de LDL (LDLc) e HDL colesterol (HDLc), e triglicérides (TG). Métodos: Realizouse genotipagem de APOE-HhaI em 134 pacientes (grupo de estudo SG) e 164 indivíduos sem a doença (grupo controle CG), na faixa etária entre 5089 anos. O perfil lipídico sérico foi analisado em um subgrupo de 30 indivíduos de ambos os grupos, pareados por idade e sexo. Admitiuse nível de significância para valorP<0,05. Resultados: APOE E3/E3 prevaleceu (SG=74,6%; CG=77,4%), sem diferença entre os grupos (P=0,667), o mesmo ocorreu para genótipos de risco (APOE /E2: SG=7,4%; CG=10,3%,P=0,624).Níveis séricos de TC, LDLc e TG mostraram medianas semelhantes entre SG (193,5; 116; 155 mg/dL, respectivamente) e CG (207,5; 120; 123,5 mg/dL respectivamente; P>0,05). Para HDLc notouse valor de mediana elevado em SG (53,3 mg/dL) versus CG (42,5 mg/dL; P=0,016), constatado também na análise de regressão logística, cuja razão HDLc/TC mostrou coeficiente 11,423 (P=0,014), confirmando acréscimo de HDLc em SG. A relação entre perfil lipídico sérico e genótipos de APOE mostrou semelhança entre os grupos (P>0,05). Conclusão: APOE-HhaI não se associa a DMRI, no entanto, o acréscimo no nível sérico de HDLc parece ter efeito protetor contra a doença, independente de variantes genéticas da apoE. .


Subject(s)
Female , Humans , Male , Cross Infection/prevention & control , Infection Control/methods , Mass Screening/economics , Methicillin-Resistant Staphylococcus aureus/isolation & purification , Staphylococcal Infections/prevention & control
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