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黑龙江林蛙胃肠道5-羟色胺细胞的胚后发生
引用本文:李淑兰,张欣,张婷婷.黑龙江林蛙胃肠道5-羟色胺细胞的胚后发生[J].动物学杂志,2015,50(4):635-642.
作者姓名:李淑兰  张欣  张婷婷
作者单位:哈尔滨师范大学生命科学与技术学院,哈尔滨师范大学生命科学与技术学院,哈尔滨师范大学生命科学与技术学院
基金项目:黑龙江省教育厅科研项目(No.12521162);
摘    要:采用亲和素-生物素复合物(ABC)免疫组织化学法,对黑龙江林蛙(Rana amurensis)胚后发育各时期胃肠道中5-羟色胺(5-HT)细胞的发生过程进行了研究。结果显示,黑龙江林蛙胃中的5-羟色胺阳性细胞最早在第38期被检测到,小肠和大肠最早出现在第41期。从41期开始,5-羟色胺细胞分布于胃、小肠和大肠中,在同一发育时期中,胃部分布密度最大。同一部位在不同发育时期5-羟色胺细胞的分布密度不同,其中胃内5-羟色胺细胞在38期和43期分布最多,分布密度分别为1.8±0.62和1.8±0.89,45期分布数量最少,分布密度为1.1±0.31;小肠中5-羟色胺细胞在41期和43期分布最多,分布密度均为1.2±0.41,在44期和45期分布最少,分布密度分别为0.7±0.49和0.7±0.47;大肠中5-羟色胺细胞在第42期分布最多,分布密度为1.2±0.41,在44期分布最少,分布密度为0.7±0.47。5-羟色胺细胞最早分布在上皮细胞之间,随着胃肠道发育的日渐完善,在上皮基部或腺泡上皮之间也有分布。细胞形态变化不明显,有圆形、椭圆形、锥体形、长梭形和三角形。推测5-羟色胺阳性细胞的出现时间、形态以及分布型是与黑龙江林蛙的个体生长发育需要、胃肠道各段的功能以及食性转变相适应的。

关 键 词:黑龙江林蛙  胃肠道  5-HT细胞  胚后发生
收稿时间:9/5/2014 12:00:00 AM
修稿时间:2015/5/15 0:00:00

5-Hydroxytryptamine Cells in Gastrointestinal Tract during the Postembryonic Development of Rana amurensis
LI Shu-Lan,ZHANG Xin and ZHANG Ting-Ting.5-Hydroxytryptamine Cells in Gastrointestinal Tract during the Postembryonic Development of Rana amurensis[J].Chinese Journal of Zoology,2015,50(4):635-642.
Authors:LI Shu-Lan  ZHANG Xin and ZHANG Ting-Ting
Institution:College of Life Science and Technology,Harbin Normal University and College of Life Science and Technology,Harbin Normal University
Abstract:A immunohistochemical (ABC methods) methods was used to study the 5-Hydroxytryptamine (5-HT) cells generant process in the Gastrointestinal Tract of the postembryonic development of Rana amurensis . The result show that the 5-HT positive cells were first found in the stomach at stage 38,and first found in the Small and large intestine at stage 41.With the development of the gastrointestinal tract, the location of the 5-HT cells were changed a lot, between the mucosal epithelium, the basal part or the between alveolar epithelial cells. But the shape of cells not have clearly changed, they were mainly round, ellipse, cone-shape and shuttle-shaped.The occurs time of 5-HT cells,the location and shape were conformable with needs of growth, and the function of each segment of the gastrointestinal tract.
Keywords:Rana amurensis  Gastrointestinal Tract  5-HT cells  postembryonic development
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