莱芜黑山羊消化道内分泌细胞的免疫组织化学研究

目的 探究莱芜黑山羊消化道内5-羟色胺(5-HT)、生长抑素(SS)、胃泌素(Gas)和血管活性肠肽(VIP)4种免疫阳性细胞的形态结构和分布规律.方法 采用免疫组织化学SABC法.结果 消化道中4种免疫阳性细胞形态多样,大多呈椭圆形和锥体形.5-HT阳性细胞数量以结肠最多,空肠和回肠次之,幽门腺区、十二指肠和直肠较少,食管、贲门腺区、胃底腺区和盲肠中未见;SS阳性细胞在幽门腺区数量最多,贲门腺区、结肠、盲肠和直肠中未见;Gas阳性细胞大量出现于十二指肠,在食管、贲门腺区和盲肠未见;除个别器官(食管、十二指肠和回肠)未见VIP阳性细胞外,在消化道的其余各段均有分布.结论 消化道内5-HT、SS、Gas和VIP 4种细胞出现最多的部位分别是结肠、幽门腺区、十二指肠和贲门腺区.

IMMUNOHISTOCHEMICAL STUDIES ON ENDOCRINE CELLS IN THE DIGESTIVE TRACT OF LAIWU BLACK GOAT

Objective The localization and morphology of somatostain(SS),serotonin(5-HT),gastrin(Gas) and vasoactive intestinal peptide(VIP) immunoreactive cells in Laiwu black goat digestive tract were studied. Methods Immunohistochemical SABC method was used. Results The morphology of endocrine cells in digestive tract was of multiplicity.The density of 5-HT cells was the highest in the colon,but not found in the esophagus,cardia gastric and cecum.The results showed that SS cells were distributed in the pylorus mostly,but not detected in the cardia,colon,cecum and rectum.Gas positive cells were the most in the duodenums,while in the esophagus and cardia was not discovered.In the cardia VIP cells were maximum,but in the esophagus,duodenums and ileum did not appear.Conclusion The location of the SS-,5-HT-,Gas-and VIP-positive cells mostly show up in the colon,the pylorus,the duodenums and the cardia respectively.