title: Apolipoprotein A1 gene polymorphism (G-75A and C+83T) in patients with myocardial infarction: a pilot study in a north Indian population.
abstract: The apolipoprotein A1 gene polymorphism (G-75A and C+83T) was studied in 100 subjects (50 patients diagnosed with myocardial infarction and 50 healthy subjects). Serum apolipoprotein (apo) A1 and apo B levels were estimated immunoturbidometrically. Extracted DNA from blood was amplified by polymerase chain reaction, digested with MspI restriction enzyme, run on 8% polyacrylamide gel, and restriction fragment length polymorphism was studied by using a gel documentation system. Serum (mean +/- SD) apo A1 levels were significantly higher in control subjects than the study group (100.80 +/- 7.06 mg/dL [1.0 +/- 0.07 g/L] and 72.56 +/- 9.86 mg/dL [0.73 +/- 0.1 g/L], respectively; P < .0001), whereas apo B levels were significantly lower (72.12 +/- 11.32 mg/dL [0.7 +/- 0.1 g/L] and 97.45 +/- 9.04 mg/dL [1.0 +/- 0.09 g/L], respectively; P < .0001). The G allele frequency at the -75-base-pair (bp) site was higher in the study group (79%) compared with the control group (58%). The T allele frequency at the +83-bp site was higher in the study group (56%) than in the control group (32%). G at -75 bp upstream from the start of transcription and T at +83 bp in the first intron may be susceptibility alleles for myocardial infarction.
authors.affiliation: Dept. of Biochemistry, Lady Hardinge Medical College & Associated SSK Hospital, New Delhi, India.
authors.forename: Rajni
authors.initials: R
authors.lastname: Dawar
authors.forename: Anil
authors.initials: A
authors.lastname: Gurtoo
authors.forename: Ritu
authors.initials: R
authors.lastname: Singh
mesh_terms: D016632:Apolipoprotein A-I / Q000097:blood / Q000235:genetics*; D001055:Apolipoproteins B / Q000235:genetics; D008076:Cholesterol, HDL / Q000097:blood; D005260:Female; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D007150:Immunohistochemistry; D007194:India; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000235:genetics*; D010865:Pilot Projects; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D020641:Polymorphism, Single Nucleotide
chemical_list: D016632:Apolipoprotein A-I; D001055:Apolipoproteins B; D008076:Cholesterol, HDL