Objective To investigate the hypoglycemic effect of water extracts from lemon grass on hyperglycemia model rats. Methods Hyperglycemia rats model was established by high-fat diet with small dosage of streptozotocin,and randomized into 3 groups:hyperglycemia model group(model group),Xiaoke pill group[treated with 1 g/(kg·d) Xiaoke pill for intragastric ad ministration] and lemon-grass extraction solution group[treated with 0.1 mL/(10 g·d) lemon-grass extraction solution for intragas-tric administration],8 cases in each group,half male and female for 28 d continous administration;meanwhile another 10 rats (half male and female) were selected randomly as control group. The body mass and blood glucose level in all the groups were detected on the 7th,14th,21st,28th d. The liver,kidney,spleen and thymus were taken from rats and measured on the 28th d of the experi-ment,to compare the changes of body mass,blood glucose level and internal quality of rats in all groups. Results Compared with the control group,the body mass of rats in the model group declined,blood glucose level in creased,thymus shrinked,thymus mass decreased,and the differences all had statistical significance(P<0.05). Compared with the model group,the change rate of body mass of rats in both xiaoke pill group and lemon-grass extraction solution group increased,the blood glucose level in Xiaoke pill group decreased with statistically significant difference(P<0.05);the blood glucose level in lemon-grass extraction solution group was similar to that in the model group,and the difference had no statistical significance(P>0.05). Conclusion The hyper-glycemic rats model is established by high-fat diet combined with STZ successfully. The Xiaoke pill has antagonistic action on weight loss and hyperglycemia compared with the model group;water extract from lemon grass has antagonistic action on weight loss,but it has no effect on the hyperglycemia.

Objective To investigate safety consciousness of food consumption among pupils in Zhanjiang City,and provide useful references for targeted intervention activities.Methods A total of 1166 pupils were selected randomly in six schools and investigated by using a self designed questionnaires which was about safety consciousness of food consumption.Results Among 1166 students,91.1% of students agreed the relationship between food and health.87.0% of them considered learning relevant knowledge was necessary.93.5% of students paid attention to the information of foods safety when they bought someone.94.7% of students were able to have correct understanding of food additives.In above,those percentages in girls were higher than that in boys.The percentage of students who knew the meaning of "QS"was 33.9% and 66.38% of them cared about nutritional value.They obtained knowledge from family members,the media,teachers and the promotion of lectures in sequence.Conclusion The pupils in urban area of Zhanjiang had good safety awareness of consumption.Girls had more safety consciousness than boys.But misunderstanding and insufficient knowledge were still existed.Schools and related departments in this respect should pay more attention and play their important role.

目的了解湛江市区中小学生购买食品的安全意识状况,为食品安全监督管理和教育宣传提供依据。方法用自制的学生购买食品安全意识问卷,对9所中小校学生进行调查。结果 1 504名学生中有35.4%不太了解和基本不了解食品安全问题;87.0%表示有必要学习相关知识;质量安全知晓率初中生(46.7%)高于小学生(33.9%)。结论湛江市区中小学生购买食品安全意识较好,但存在购买误区,同时法律意识薄弱,学校和相关部门应发挥其应有作用。

[Objective]To understand the level of primary and high school students' first aid knowledge,so as to provide useful references for the relevant departments in the future work.[Methods]A random survey was conducted among primary and high school students in urban areas of Zhanjiang city in June 2011.[Results]A total of 818 primary and high school students were surveyed.80.20% of students thought that first aid knowledge was very important.Those who had participated in the first aid training related activities accounted for 18.80%.Those who were in great need of system training of first aid knowledge accounted for 46.10%.11.50% of students knew how to give patients who have spinal trauma the proper body positions.Students who knew CPR accounted for 81.00%.[Conclusion]Most primary and high school students lack knowledge and ability of first aid.