ABSTRACT
To investigate the effects of dietary fatty acids on liver and serum lipid as well as on erythrocyte membrane, 23%(w/w) lard (as saturated fatty acids SFA), 23%(w/w) corn oil (as polyunsaturated fatty acids PUFA) and 5%(w/w) corn oil (as low fatty acids LFA control) were fed respectively to three groups of Wistar rats for 35 and 63 days. The study showed that the pattern of liver fatty acids was correlated with that of dietary fatty acids. Serum VLDL-Ch was lowered in PUFA group when compared with that in SFA group. The osmotic fragility and hemolytic rate of RBC were elevated in PUFA group, but lowered in SFA group. The membrane fluidity of RBC in PUFA group tended to increase. The immune adhesive activity of RBC C3b receptor was impaired when high dietary fat (PUFA, SFA) were given to rats. This study indicates that high dietary fatty acids have adverse effect on RBC membrane structure and immune adhesive function. That high PUFA is good for health is not always correct.
ABSTRACT
Weanling Wistar rats were fed a modified AIN-76 diet ad libitum for 25 to 57 days, either copper-deficient (0.49mg/kg; CuD) or copper-adequate (6.44mg/kg;CuA). The effects of dietary copper deficiency on the enzymatic components of the primary free radical defense system-super-oxide dismutase (SOD), catalasc (CAT) and glutathione peroxidase (GSH-Px), lipoperoxides (LPO) and serum hemolysin were examined. The amount of LPO exhibited no significant change even though SOD activity decreased significantly in the tissues of CuD rats, which indicated that Cu-ZnSOD activity responded directly to copper status of the body but the compromises in the overall protection against free radicals were not evident. The profound reduction in scrum hemolysin in CuD rats suggests that humoral immune function is copper dependent. The results also suggest that as an index of evaluating copper nutriture CuZnSOD is more sensitive than hemoglobin to copper deficiency.
ABSTRACT
Hemoglobin (Hb) regeneration method in rats was used to prove the effect of pigmented rice on iron dificiency anemia (IDA). IDA was induced in 90 Wistar male weaning rats by feeding low iron diet for 25 days. Fifty of the anemic rats were divided into 5 groups; low iron, nonpigmented milled rice, pigmented milled rice, pigmented semibrown rice and control (compared only with the pigmented milled rice group). The result of 30 days experiment showed that pigmented rice was superior to nonpigmented rice in Hb regeneration and the semibrown was superior to the milled. Pigmented rice, especially the semibrown, was found to possess more iron than nonpigmented rice. There was a close correlation between the degree of Hb regeneration and the quantity of iron taken by rats or the quantity of iron in diets. These evidences suggested that pigmented rice had certain prophylactic and curing effect against IDA and this was probably due to its higher iron content.
ABSTRACT
Anthropometric evaluations of the upper limb have become valuable in the assessment of nutritional status of fat and protein. The standards for TSF (triceps skinfold thickness), T + S (sum of triceps and subscapular skinfold thicknesses), F(upper arm fat area), AMC (upper arm muscle circumference) and M(upper arm muscle area) which can be used on male adults tentatively are presented by survey in 1532 healthy males aged from 18 to 34 years.