中长链脂肪酸食用油对高甘油三酯血症患者脂代谢的影响

目的探讨中长链脂肪酸食用油对高甘油三酯血症患者血脂的影响。方法将112名高甘油三酯血症患者分为2组,分别食用中长链脂肪酸食用油和长链脂肪酸食用油,指导每日运动量、热能和食用油摄入量(25～30g/d)。研究开始前和8w后对两组研究对象进行人体测量、血生化检测。结果有11人退出研究,中长链脂肪酸食用油和长链脂肪酸食用油组分别有51人和50人,两组间性别分布没有差别。研究前、第2、4、6、8w,两组间热能、蛋白质、脂肪、碳水化合物和体力活动时间也无差别。与研究前相比,食用中长链脂肪酸食用油8w后体重、BMI、腰围、臀围、腰臀比、体脂肪量、体脂肪百分比等人体测量指标明显降低,而且体重、BMI、腰围、体脂肪、体脂肪百分比降低的程度明显优于长链脂肪酸食用油组。中长链脂肪酸食用油组8w后TG、ApoB、ApoAII、ApoC2、ApoC3水平明显下降,且降低的程度均明显优于长链脂肪酸食用油组。结论合理膳食条件下,中长链脂肪酸食用油可减轻高甘油三酯血症患者体重,降低血甘油三酯水平,改善脂蛋白代谢。

EFFECTS OF MEDIUM-AND LONG-CHAIN FATTY ACID TRIACYLGLYCEROL ON BLOOD LIPID IN HYPERTRIACYLGLYEROLEMIC SUBJECTS

Objective To investigate the effects of medium-and long-chain fatty acid triacylglycerols on blood lipid in hyperltriacylglycerolemic subjects. Method A case-control clinical trial was carried out,in which 112 subjects with hypertriacylglycerolemia were enrolled and divided into two groups. These two groups were randomized to long-chain fatty acid triacylglycerol oil(LCT) ,and medium-and long-chain fatty acid triacylglycerol oil(MLCT) . All subjects were requested to ingest fixed energy intake and perform physical activity daily during the whole study. Both of the oils were asked to consume at 25-30g daily for consecutive 8w. Anthropometric measurements and blood biochemical variables were measured at the initial and final time of the study. Results Eleven subjects were excluded from the study because of various reasons. There were 50 and 51 subjects left in LCT and MLCT group,respectively. No difference of sex distribution was noted between two groups. There were also no significant differences in daily intake of energy,protein,fat and carbohydrate,as well as daily physical activity time between two groups at 0,2,4,6 and 8w. The subjects consuming MLCT demonstrated significant decreasesin body weight,BMI,WC,HC,WHR,body fat,body fat % compared with the initial values after 8w. A greater extent of decrease in body weight,BMI,WC,body fat and body fat% was found in MLCT group than in LCT group. The levels of TG,ApoB,ApoAII,ApoC2,ApoC3 in MLCT group were significantly lower than those in LCT group after 8 w,and the extent of decrease in these indicators was much greater in the former than in the latter. Conclusion Consumption of medium-and long-chain fatty acid oil may help to reduce body weight,body fat and concentration of blood triacylglycerol and improve apolipoprotein metabolism in hypertriacylgly cerolemic subjects under an appropriate dietary regime.