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Expression and changes of neuropeptide Y in the development of mouse stomach
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- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 2
- DOI:
- 10.3969/j.issn.1009-3079.2009.02.002
- Key Word:
- 神经肽Y;胃发育;免疫组化;小鼠
Abstract： 目的: 观察神经肽Y(neuropeptide Y, NPY)在小鼠胚胎胃内的表达, 分布及发育规律, 探讨胃组织形态的变化、功能与NPY的关系.方法: 采用HE染色法和免疫组化SABC法, 免疫组化图像分析系统对切片进行定量测定, 研究小鼠胚胎13D(embryonic days, E13D)至出生前(E21D)胃NPY的表达情况.结果: 首先于胚胎14 d的肌间处及黏膜上皮出现NPY免疫反应物阳性表达, 随发育相继出现在黏膜下层, 固有层及黏膜肌层内, 在鼠胎胃发育的E14D-E18D, 免疫物反应阳性由弱到强, E18D到高峰. NPY在胃壁的总数密度E15D时明显增加, E15D组与E14D组间有差异(2.26±4.19 vs 1.05±3.91, P<0.05); 总面密度E18D时明显增加, 与其之前的E14-16D及随后的E19D-21D差异具有显著性(9.00±3.41vs 1.12±1.10, 1.88±4.75, 3.77±5.09, 3.39±3.11, 3.36±4.11, 3.43±3.16, P<0.01); 黏膜阳性表达密度E18D较其他组显著升高(7.35±5.01 vs 2. 45±2.79, 3.41±3.25, 5.89±7.43,3.55±3.78, 4.33±6.52, 3.21±6.25, 2.77±6.13, P<0.05或0.01).结论: E14D-E18D是鼠NPY在胎鼠胃发生发育的一个关键时期; NPY发生发育与胃发育及功能的建立有着密切关系.
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