the relation between nutrition and serum lipid and apolipoprotein profile of female elementary school students, khomeinishahr, iran

background : the excessive changes in serum of lipids, lipoproteins and apolipproteins can be considered as strong risk factors for cardiovascular diseases.in particularlipoproteins can determine the risk of cardiovascular illnesses in teenyears (before showing clinical symptoms).studies have shown that the serum level of ldl c -hdl c is a function of the productionamount of apoa 1 and apob 100 .moreover, the amount of apoa 1 has a negative correlation and the amount of apob 100 has a positive correlationwith cardiovascular diseases.this study has done in order to determinethe lipid and apolipoprotein levels of serum in elementary school girls in khomeini shahr town and to see which students are exposed to an increment of blood lipids and cardiovascular disease.   methods: one hundred students were chosen randomly and their blood samples were taken in fasting state. personal information form and agreement form for taking part in the research and a 24 hour dietary recallfor 3 days(2 working days and one off day) were given to their parents to complete, then they were analyzed by using the transforming coefficient tables and nutrition percentage , and spss software. the results were analyzed statistically. the values of absolute cholesterol tg, ldl, hdl were also measured enzymatically and lipoproteins of apoa i andapob 100 were determinedby immunoturbidimetry and compared with reference values and nutritional status. results: results showed that there were no significant differencesbetween mean absolute cholesterol,mean apoa i and mean reference.the mean of tg, hdl c , aopb 100 weresignificantlyhigher than mean reference. moreover,mean ldlc was significantly lower than mean reference. there was a significant inverse correlation between protein intake through food and apob 100 amount(r= -0.212, p = 0.034). there was a significant direct correlation between cholesterol intake through food and apoa i amount (r= 0.250 p= 0.012,). in addition, dietary carbohydrates, fibers and fat intake had no significant correlation with the studied variables (sfa- pufa- mufa- fat total). conclusions: there were a meaningful and direct correlation between dietary protein intake and aopb 100 (p = 0.034) and there wasalso a direct correlation between apoa i and dietary cholesterol intake (p = 0.012).