The enriched soybean high branched chain amino acid mixture (II) was a special hydrolytic soybean protein enriched with a small amount of individual amino acids. The content of its essential amino acids was 68.89% and branched chain amino acids 42.85%.The results of this experiment show that the mixture (II) can improve negative nitrogen balance and elevate the level of serum albumin, and is a good nitrogen source for elemental diet after trauma.

Objective: To investigate the effects of supplementing multivitamins on the growth and development of children. Methods: A total of 24 000 children (6 8 years old) from Shanghai, Beijing and Guangzhou were divided into 2 groups. One group was given multivitamin tablets and another was without any treatment for 12 weeks. Each tablet contains VA 5 000 IU, VD 400 IU,VE 30 IU,VB 1 1.5 mg,VB 2 1.7 mg,niacin 20 mg,VB 6 2 mg,VB 12 6 ?g,folic acid 0.4 mg and VC 60 mg. Height, body weight, skinfold thickness, mid arm muscle circumference and serum VA, 25 OHD 3, Hb, IgA,IgG and IgM were measured before and after supplementing multivitamins.VB 1, VB 2 and VC were evaluated by four hours loading test. Results: It was found that vitamin deficiencies, especially that of VA, VB 2 and VB 1, existed in the children. After supplement, the net increase of height and weight was significantly higher than that of control group. Levels of serum VA, 25 OHD 3 and Hb in supplemented group were significantly increased and the urinary excretion of VB 1, VB 2 and VC was also significantly increased in supplemented group. Conclusion: The results indicate that the multivitamins is conductive to improvement of vitamin status and nutritional anemia, and to growth and development. It is necessary for children with routine diet to supplement multivitamins. [

Objective To investigate the sleep self-adaptation for Chinese military personnel and the correlations with sleep quality. Methods 857 soldiers completed the Sleep Quality Scale of Chinese Military Personnel (SQSCMP) and the Soldier Sleep Self-Adaptation Scale (SSSAS). Results The average level of sleep selfadaptation of Chinese military personnel was 2.89, below the theoretical midpoint score 3. There were significant positive correlations between the sleep quality and the global level of sleep self-adaptation and its 5 factors ( r =0. 16 ～ 0. 533, P ＜ 0.001 ), except the factor of perceived importance of sleep ( r = -0.027 ). Multiple stepwise regression analysis showed that the major determinants of the sleep quality were the factors of positive attitudes about sleep,the positive self-suggastions on sleep and the ability of anti-disturbance of sleep. Conclusion The positive and appropriate attitudes and beliefs about sleep are of benefit to sleep quality.

Graduate education is a major way for training advanced talents in the field of military preventive medicine,and the process management is the key step for training talents with high quality of theoretic creation and experimental skills.In order to cultivate excellent graduate students with distinct military especially naval characters,in recent years,we have made certain exploration and practices during the education management process,facilitating construction of educational and experimental platform,intensifying theoretic ability and lab skills,improving research project selection and design,emphasizing middle evaluation and so on.Now a new type of process management mode of graduate education in military preventive medicine with significant military character has come into being.

Objective: To study the effect of a-linolenic acid on insulin resistance and its mechanism concerning the insulin signal transduction,providing a theoratic basis for applying plant oil rich in a-linolenic acid in preventing and treating diabetes. Methods :The effect of a-linolenic acid on protein kinase B(PKB) signal transduction and expression of glucose transport protein 4(GLUT4) in rat skeletal muscles was detected by primary cell culture and Western blot techniques. Results:At the concentration of 0. 125-1. 0?mol/L, a-linolenic acid promoted the PKB phosphorylation, but didnot influence the expression of PKB. The expression of GLUT4 protein was dose-dependent and time-dependent. Adding PI3K inhibitor LY294002(15 ?mol/L) in a-linolenic acid cultured skeletal muscle cells made no significant difference in the level of PKB phosphorylation and GLUT4 protein. Conclusion:a-linolenic acid can improve the level of GLUT4 protein by promoting skeletal muscle PI3K/ PKB signal transduction,and increase the sensitivity of skeletal muscle on insulin, which can alleviate or avoid insulin resistance and glycometabolic disturbance.

The changes of the dietary composition of Shanghai population from 1950 to 1985 were investigated and the relationship between the dietary composition and the mortality of diseases of the population was analysed with retrospective method. The results showed that the amount of consumption of grain was decreased but that of animal foods increased (except that around 1960) year after year during the past 35 years. The consumption of meat and eggs in 1985 was 2.8 and 4.9 times , higher than that in 1950 respectively. The intake of carbohydrates was decreased but- that of fat increased year by year. The ratio of polyunsaturated fat to saturated fats (P/S) was decreased and there was a trend of excess intake of fat. The mortalities from malignant tumours, cardiovascular and cerebrovascular diseases were increased year by year, which correlated strongly with the consumption of dietary saturated fat. On the other hand the intake of protein, calcium and riboflavm was lower. Therefore, the dietary composition of Shanghai population was imperatively adjusted.

Objective: To observe the changes of free amino acids (FAAs) in plasma and brain of rats during simulated sea sickness and post–adaptation. Method: Pica or kaolin consumption was used as an indicator to judge the development of sea sickness and adaptation when SD rats were stimulated by Crampton sea sickness simulator. FAAs concentrations in plasma and brain of rats were determined by high performance liquid chromatography (HPLC) after simulated sea sickness and post-adaptation. Results: After simulated sea sickness stimulation for 1 d, the levels of Cys and Ile were increased, and Gly and Pro decreased significantly in plasma. The increase of BCAA/AAA ratio was also found. In brain, the contents of Ala, Cys+Met, Tyr, His, and total amino acids were remarkably decreased. After simulated sea sickness stimulation for 21 d, no changes of FAAs were observed in plasma and brain but the ratio of Glu/ GABA was increased in brain. There were no differences of FAAs, Glu/GABA ratio and BCAA/AAA ratio in plasma and brain of tolerant and susceptible sea sickness rats. Conclusion: The levels of amino acids, especially those related to neurotransmitter synthesis, in plasma and brain were changed significantly during sea sickness.

The primary problems in preventive medicine teaching in clinical medicine are analyzed,and some countermeasures are proposed,including understanding the important strategic status of preventive medicine,strengthening teachers construction and im- proving teaching ways so as to promote teaching effect of preventive medicine.

The soybean high branched-chain amino acid mixture was composed of soybean protein hydrolyzed by special method with a few types additional amino acids in small amount. The mixture contained 68.9% of essential ami-no acids and 42.9% of branched-chain amino acids.The animal experiment showed that the mixture could promote the growth of young rats and maintain the normal levels of Hb, serum total protein and albumin. Its protein efficiency ratio (PER), true protein digestibility (TD), biological value (BV) and net protein utilization (NPU) were 2.78, 94.0%, 85.0 and 80.0% respectively. These values were significantly higher than that of casein. The results indicated that the soybean high branched-chain amio acid mixture did not produce amino acid antagonism caused by the high amount of branched-chain amino acids and had higher nutritional quality.