Lecithin has no effect on serum lipoprotein, plasma fibrinogen and macro molecular protein complex levels in hyperlipidaemic men in a double-blind controlled study.
OBJECTIVE
To examine the effects of lecithin on serum lipoprotein, plasma fibrinogen and macro molecular protein complex (MPC) levels.


METHODS
Twenty free living hyperlipidaemic men participated in this double-blind study which controlled for possible indirect effects. The subjects were randomly assigned to one of three treatments: frozen yoghurt or frozen yoghurt with 20 g soya bean lecithin or frozen yoghurt with 17 g sunflower oil. Sunflower oil was used to control for the increased energy and linoleic acid intake from lecithin. Yoghurt served as the 'vehicle' for the lecithin and sunflower oil and yoghurt alone was given to one group to control for possible effects due to the yoghurt 'vehicle', as well as other environmental influences. Variables were measured with standard methods twice at baseline and after 2 and 4 weeks of treatment.


RESULTS
Plasma linoleic acid levels increased significantly with lecithin and sunflower oil treatments indicating that compliance to the treatments were obtained. Lecithin treatment did not have significant effects on serum total cholesterol, triglyceride, high density lipoprotein cholesterol, low density lipoprotein cholesterol, apolipoprotein A, apolipoprotein B or lipoprotein (a) levels. Plasma fibrinogen and MPC levels were also not affected by lecithin therapy. Sunflower oil treatment resulted in significant increased body weight, serum TC and decreased MPC levels.


CONCLUSIONS
Lecithin treatment had no independent effects on serum lipoprotein, plasma fibrinogen or MPC levels in hyperlipidaemic men.
Department of Nutrition, Potchefstroom University for Christian Higher Education, South Africa.
W
W
Oosthuizen
H H
HH
Vorster
W J
WJ
Vermaak
C M
CM
Smuts
J C
JC
Jerling
F J
FJ
Veldman
H M
HM
Burger
D000328:Adult; D001055:Apolipoproteins B / Q000097:blood; D001798:Blood Proteins / Q000378:metabolism*; D002784:Cholesterol / Q000097:blood; D004311:Double-Blind Method; D005340:Fibrinogen / Q000378:metabolism*; D006801:Humans; D006949:Hyperlipidemias / Q000097:blood*; D017270:Lipoprotein(a) / Q000097:blood; D008074:Lipoproteins / Q000097:blood*; D046911:Macromolecular Substances; D008297:Male; D008875:Middle Aged; D019308:Palmitic Acid / Q000097:blood; D010713:Phosphatidylcholines / Q000008:administration & dosage / Q000494:pharmacology*; D010938:Plant Oils / Q000008:administration & dosage; D013025:Glycine max; D000074242:Sunflower Oil; D015014:Yogurt
D001055:Apolipoproteins B; D001798:Blood Proteins; D017270:Lipoprotein(a); D008074:Lipoproteins; D046911:Macromolecular Substances; D010713:Phosphatidylcholines; D010938:Plant Oils; D000074242:Sunflower Oil; D019308:Palmitic Acid; D005340:Fibrinogen; D002784:Cholesterol