8周有氧运动对肥胖大鼠消化道嗜银细胞形态及分布密度的影响  

Effects of 8-Week Aerobic Exercise on the Morphology and Distribution Density of Argyrophilic Cells in the Digestive Tract of Obese Rats

作　　者：张敏军 陈霞[1] ZHANG Min-Jun;CHEN Xia(Harbin School of Physical Education Science,Harbin normal University,Harbin 150025,China)

机构地区：[1]哈尔滨师范大学体育科学学院,哈尔滨150025

出　　处：《动物学杂志》2020年第6期752-759,共8页Chinese Journal of Zoology

基　　金：哈尔滨师范大学硕士研究生创新科研项目(No.HSDSSCX2020-35)。

摘　　要：为了研究有氧运动对肥胖大鼠(Rattus norvegicus)消化道嗜银细胞形态及分布密度的影响,本实验采用Grimelius银染法观察8周运动组(n=9)与对照组(n=9)肥胖大鼠消化道嗜银细胞形态及分布密度。结果显示,大鼠消化道各部位均有嗜银细胞分布;两组大鼠消化道嗜银细胞形态上无差异,均以圆形、椭圆形、锥体形、梭形为主;两组大鼠消化道嗜银细胞分布密度高峰均位于胃体,而低谷有所不同,对照组大鼠消化道嗜银细胞的分布密度低谷位于食管、贲门,运动组大鼠位于食管、贲门、空肠、回肠、直肠;两组相比,食管和直肠两部位分布密度差异不显著(P>0.05),其余各部位均有差异,且运动组大鼠贲门、胃体、盲肠、结肠嗜银细胞分布密度极显著低于对照组(P<0.01),幽门、空肠嗜银细胞分布密度极显著高于对照组(P<0.01),运动组十二指肠、回肠嗜银细胞分布密度显著高于对照组(P<0.05)。两组动物嗜银细胞分泌密度的这种改变与动物机体所处不同生理状态以及消化道各部位功能有关。This experiment was designed to observe the changes in morphology and distribution density of argyrophilic cells in digestive tract of obese rats(Rattus norvegicus)after 8-week exercise by Grimelius silver staining.Rats in exercise group did an 8-week aerobic exercise on the treadmill.SPSS 25.0 and Duncan’s multiple range test were applied to make a statistical analysis of the argyrophilic cells in digestive tract of obese rats from the exercise group and the control group.An independent sample T was applied to test the distribution density of the argyrophilic cells in the same part of the digestive tract of the two groups.The results showed that argyrophilic cells distributed in all parts of digestive tract of rats(Fig.1),mainly in the form of round,oval,cone and fusiform(Table 4).The highest distribution density of argyrophilic cells in gastrointestinal tract of the two groups was in body of stomach(Table 3).The density of argirophilic cells in the body of stomach in the control group was 112.30±13.42,while that in the exercise group was 98.15±12.53.The distribution density of argyrophilic cells in digestive tract of the control group reached its lowest point in oesophagus and cardia,while in the exercise group that occurred in oesophagus,cardia,jejunum,ileum and rectum.Compared with the control group,distribution density in esophagus and rectum in exercise group was not significantly different(P>0.05),while there was significant difference in the other parts.The distribution densities of argyrophilic cells in cardia,body of stomach,cecum and colon in the exercise group were significantly lower than in the control group(P<0.01).The distribution densities of argyrophilic cells in the esophagus and rectum in the exercise group were significantly higher than in the control group(P<0.01).The distribution densities of argyrophilic cells in the duodenum and ileum in the exercise group were significantly higher than in the control group(P<0.05).There was no difference in the distribution density of argyrophilic ce

关 键 词：有氧运动 肥胖大鼠 嗜银细胞 形态 分布密度 

分 类 号：Q955[生物学—动物学]