title: Eicosapolyenoic acids of serum lipids of Japanese islanders with low incidence of cardiovascular diseases.
abstract: Japanese are unique among the peoples of developed countries in having a high intake of eicosapentaenoic acid (C 20:5) from fresh fish and this may in part contribute to their low incidence of cardiovascular diseases. Mass spectroscopic analyses of eicosapolyenoic acids (C20:3, C20:4 and C20:5) were carried out on the serum of aged persons living on Kohama island in Okinawa and known to have the lowest incidence of cardiovascular diseases in Japan. All but 4 of the 77 persons examined (73.94 +/- 7.81 years old) led active fishing-farming lives. The total amount of eicosapolyenoic acids in the serum of persons on Kohama island (46.77 +/- 7.46 mg/100 ml) was higher (p less than 0.001) than that in people on mainland Japan, owing to the higher intake of fresh fish (147.7 g/day). A positive correlation (p less than 0.01) was found between serum C 20:5 concentration (6.82 +/- 2.54 mg/100 ml) and high density lipoprotein concentration (55.38 +/- 13.83 mg/100 ml). In addition, there were positive correlations (p less than 0.01) between serum C 20:3 concentration (6.58 +/- 1.61 mg/100 ml) and total cholesterol (188.60 +/- 32.30 mg/100 ml), and triglyceride and skinfold thickness. The blood pressure level (p less than 0.01), incidence of abnormal ECG (p less than 0.05), and salt intake (6.2-8.3 g/day) estimated from urinalysis, were all lower than the average figures for Japanese of similar ages. No persons examined showed Q-wave on ECG. The percentage of smokers and drinkers were similar for Kohama island and mainland Japan.
mesh_terms: D000203:Activities of Daily Living; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001794:Blood Pressure; D002318:Cardiovascular Diseases / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL; D004537:Eicosanoic Acids / Q000097:blood*; D004562:Electrocardiography; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D007564:Japan; D008075:Lipoproteins, HDL / Q000097:blood; D008297:Male; D008875:Middle Aged
chemical_list: D008076:Cholesterol, HDL; D004537:Eicosanoic Acids; D008075:Lipoproteins, HDL; D002784:Cholesterol