Fuliru is a complete, balanced and isoosmotic nutrition for enteral feeding. It consists of intact proteins, fat. sucrose, minerals, vitamins and water. Approximate caloric content is 2.1 kJ/ml. Caloric distributions are 20% for proteins, 27%-30% for fat. 50%-53% for carbohydrate. Three groups of Wistar adult rats with 30% TBSA full thickness burn were fed with Fuliru, commercially supplied formula, and standard rat meal separately. It was found that the body weight, hemoglobin level, the length of small intestine, the DNA content of ileal mucosa, the dry weight of ileal wall, and the plasma amino acid profile of burned rats fed with Fuliru recovered better than others. The results suggest that the Fuliru may be benefical to burned and other severe traumatic patients.

One hundred adult male rats were equally distributed into 5 groups entitled to recieve protein diets, namely milk-egg, egg, gelatin-corn, beef and soybean cake.Having received these diets for 2 weeks, all rats were given first exposure of 550 rad and fed on the same diet as before. After 30 days, any rat survived in 5 groups had to receive second irradiation of 650 rad.After the first irradiation, the body weights of rats in 5 groups were declined but restored to pre-irradiation level at the 25th day, among them the egg diet group was restored much better. At the same day after the second irradiation, the body weight of the gelatin-corn group restored much more than the soybean, group.No statistically different results have been found in survival rate of 5 groups following the irradiation of 550 rad for 32 days. The survival rate of the gelatin group was higher than that of the soybean group both 32 and 50 days after the second exposure of ?-rays for 650 rad, but the survival rate of the egg diet group was significantly higher only at 50 days.

Sixty male rats divided equally into three groups were fed with synthetic diet. In every group each rat was subcutaneously given with vitamin B12 and folic acid, but the administration dose for different group was different so that the first group showed nutritional insufficiency, the second almost normal and the third good nutritional condition.Having fed to four weeks, the nitrogen intake for the first group (0.36 ?0.01 g/day) was significantly lower than that for the second (0.45?0.02 g/day) or for the third (0.44 ?0.012 g/day). The same were true for urinary nitrogen and total nitrogen.Under histidine load of 50 mg per rat, the urinary nitrogen excretion in every group was increased, but the increased quantity was much more than the nitrogen content in histidine used for loading test. At the same while the urinary amino nitrogen and ammonia nitrogen for the first group were increased, but not for the second or for the third before and after the loading test.Twelve rats selected from every group were equally distributed into two subgroups, one being irradiated with 60Co ray 700 rad and other not irradiated taking as control. The loading tests of histidine were undertaken at 1st, 7th, 14th, 21th and 28th day. The results showed that the radiation damage, the decrease of food intake and histidine loading test might exaggerate the disturbance of nitrogen metabolism in rats suffered from nutritional insufficiency of vitamin B12 and folic acid, as shown in urinary amino nitrogen and ammonia nitrogen excretion, but higher administration of vitamin B12 and folic acid could eliminate the exaggeration and improve the disturbance of nitrogen metabolism as well.

Three patients of chronic radiation disease having typical clinical symptoms were selected as experimental subjects. They took high-protein diet containing 1586-1669 kcal, 75.4-77.2g protein, 162.4-183.0g carbohydrate and 69.7-69.8g fat. Apparent digestibilities of protein, carbohydrate and fat in the diet were estimated as 85.9-87.3, 98.8-99.3 and 94.7-96.1% respectively. Nitrogen balances of three patients were -0.90, -0.31 and -0.01g per day. During that period, patients' body weight dropped 0.5-1.5kg.Afterward two patients received the diet therapy of a high-protein high-calorie diet specially prepared and given at six meals instead of four meals per day. The daily intakes of protein, fat, carbohydrate and calories were increased to 97.2g, 94g, 308-312g and 2467-2483 kcal respectively. The digestibility of protein in the therapeutic diet was slightly higher than that in hospital diet, but those of carbohydrate and fat did not change obviously. The nutritional status of two patients became better as shown by that the nitrogen balance turned positive ( + 2.37 and +2.93g per day) and the body weight increased.

Weanlimg male rats fed on synthetic diet containing 1% succinylsulfa-thiazole and devoid of vitamin B12 and folic acid for 3-5 weeks, developed syndromes of the vitamins deficiency, i.e. poor food consumption, low growth rate, decrease in white cell count and marked increase in formimi-noglutamic acid excretion.Nevertheless, the others had an intake of vitamin B12 (0.02 ?g/day/-rat) and folic acid (0.5?g/day/rat) for a 36-day period, also showed signs of vitamins deficiency. But when given a daily dose of 0.1 ?g of vitamin B12 and 2.5 ug of folic acid, the rats had a good appetite and grew well, and excreted more formiminoglutamic acid than normal rats, when they were given a loading dose (0.05 g/rat) of histidine. Under the similar feed- ing condition, rat ingesting a daily dose of 0.3 ug of vitamin B12 and 7.5ug of folic acid, showed no obvious syndomes of the vitamins deficiency.After the rats were fed on the same diet and given with vitamin B12 (0.02 ug/day/rat) and folic acid (0.5ug/day/rat) for a 36-day period, the animals developed increased radiosensitivity. After total-body irradiation (700 rad), the food consumption, growth rate and survival rate in this group were lower than those in other groups ingesting individually 0.1 ug of vitamin B12 and 2.5 ug of folic acid or 0.3ug of vitamin B12 and 7.5 ug of folic acid daily.After irradiation, in the group of 0.02 ug of vitamin B12 and 0.5 ug of folic acid or 0.1 ug of vitamin B12 and 2.5 ug of folic acid in daily in-gestion there was a considerable increase in formiminoglutamic acid with a loading test of histidine(0.05 g/rat) than before. The results showed that the radiation intensified vitamins deficiency in rats.

Sixty male rats divided into the control and the gelatin group were fed with 20% protein synthetic diet. The diet for the former group contained 24% casein, whereas for the latter 11% gelatin and 12% casein. , Having been fed for some days, all rats were irradiated with 875 rad (LD85-90). The main results were summarized as follows;1. The gelatin group had higher survival rate than the control group. 2. The body weight of gelatin group was less declined than that of control group and then much restored than the latter. 3. The survival time of dying rats within 14 days following the exposure to 875 rad in gelatin group was more longer than that in control group. 4. The gelatin group had less biological lesions than the control group.It was suggested that the gelatin diet had distinctly prophylactic-therapeutic action on acute radiation damage and its mechanism was probably related to the prevention from disturbance of collagen metabolism.

Studies on nitrogen metabolism in rats and dogs during acute radiation damage were made, the main results being shown as follows:1. Rats given 630 r whole body radiation showed marked decrease of food intake, but their body weight losses exceeded substantially those of non-radiated rats in pair feeding group. As compared with the latter, the former had more excretion of urinary nitrogem and negative nitrogen balance in the 1st and 2nd day following the exposure of X-ray.2. Four adult male dogs were selected as experimental animals. After irradiation of 430 r,the daily intake of protein and calories were decreased and correspondingly the excretion of total nitrogen,urea nitrogen and amino nitrogen became increased, especially in the 1st and 2nd day.3. Three groups of dogs were fed to low, moderate and high protein diet respectively. Their nitrogen balance were different but normal, however, after irradiation of 400 r the nitrogen balances in the low protein diet group became negative whereas that in the moderate or high protein diet group in general was slightly positive.

Rats were divided into 4 groups. Among them the control group was fed to the synthetic diet consisted of egg white powder, sucrose, plant oil, vitamins and salts mixture, the other 3 groups being fed to the same diet except that instead of egg white and sucrose in 20 % composition of diet liver, cabbage and yeast were used respectively.After the irradiation of 630 r, the 30 days mortality in control group was significantly higher than any other experimental group. As compared with the control group, the liver-fed group had longer survival time and more increment of body weight in the recovery period. It suggested that certain factors might exist in liver, cabbage or yeast for the protective effect on acute radiation damage though the action of known nutrients (especially essential trace elements) was not completely exclusive.