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当前位置: 首页 > 文章 > 不同规格瘤背石磺胃盲囊5-羟色胺和P物质分布与数量的初步研究 水产学报 2009,33 (2) 91-96
Position: Home > Articles > Preliminary study on distribution and relative frequency of 5-HT and substance P positive cells in stomach caeca of different sizes of Onchidium strumas Journal of Fisheries of China 2009,33 (2) 91-96

不同规格瘤背石磺胃盲囊5-羟色胺和P物质分布与数量的初步研究

作  者：
杨筱珍;沈蓓杰;吴旭干;胡冰;滕炜鸣;成永旭
单  位：
上海海洋大学省部共建水产种质资源发掘与利用教育部重点实验室
关键词：
瘤背石磺;胃盲囊;5-羟色胺;P物质
摘  要：
将不同规格野生瘤背石磺,按8 g以下、8~18 g和18 g以上分为3组,组织切片观察胃盲囊组织结构,并采用免疫组化方法,观察5-羟色胺和P物质在胃盲囊中分布及数量变化规律。结果表明,瘤背石磺胃盲囊主要由非纺锤型和纺锤型两种类型绒毛组成,这两种绒毛所占比例在瘤背石磺不同发育阶段明显不同,在18 g以上组中以纺锤型为主,此时纺锤型所占比例(66%)约为非纺锤型(34%)的2倍。各组瘤背石磺胃盲囊中均有大量5-HT和P物质阳性细胞的分布,这些细胞主要分布于上皮粘膜层,且主要分布在非纺锤型绒毛中,5-羟色胺和P物质阳性非纺锤型绒毛比例均匀约为纺锤型绒毛的10倍。5-羟色胺和P物质阳性细胞数在瘤背石磺胃盲囊的分布规律,均有随瘤背石磺重量的增加而不断增加的趋势,其中18 g以上组5-羟色胺阳性细胞数(112.82 ind/cm2)约为8 g以下组(34.8 ind/cm2)的3倍,而18 g以上组P物质阳性细胞数(177.48 ind/cm2)约为8 g以下组(51.08 ind/cm2)的3.5倍。在各组中P物质阳性细胞的数量明显高于5-羟色胺,且在不同发育阶段其增加趋势更为明显。
译  名：
Preliminary study on distribution and relative frequency of 5-HT and substance P positive cells in stomach caeca of different sizes of Onchidium strumas
作  者：
YANG Xiao-zhen,SHEN Bei-jie,WU Xu-gan,HU Bing,TENG Wei-ming,CHENG Yong-xu(Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources,Ministry of Education,Shanghai Ocean University,Shanghai 201306,China)
关键词：
Onchidium strumas;stomach caeca;5-HT;substance P
摘  要：
Different sizes of Onchidium strumas were divided into three groups,which were below 8 g,8-18 g and upward of 18 g group.The histological structure and the number of 5-HT and substance P positive cells in stomachcaeca of different sizes of Onchidium strumas were observed by histology and immunohistochemical methods.The results showed that histologically,two types of villis,spindly and non-spindly,were found in stomach caeca of Onchidium strumas.The percentage of non-spindly villis was reduced with body weight of Onchidium strumas increasing.The much more spindly villis were distributed in upward of 18 g Onchidium strumas.The percentage of spindly villis(66%) was about two-fold more than non-spindly villis(34%) in upward of 18g group.Numerous 5-HT cells and substance P were detected in the epithelial mucosa of Onchidium strumas stomach caeca villis,especially in non-spindly villis.The percentage of positive non-spindly villis of both 5-HT and substance P were 10 times more than that of spindly villis.The number of positive cells of both 5-HT and substance P in stomach caeca were significantly increased in a weight-dependent manner,from below 8 g to unward of 18 g group.The amount of 5-HT in upward of 18 g group(112.82 ind/cm2) was about 3-fold more than that inbelow 8 g(34.8 ind/cm2),meanwhile,the amount of substance P in upward of 18 g group(177.48 ind/cm2) was about 3.5-fold more of that in below 8 g(51.08 ind/cm2).The amount of substance P was higher than that of 5-HT in three groups,and increased with weight.

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