畜牧兽医学报 ›› 2026, Vol. 57 ›› Issue (1): 526-539.doi: 10.11843/j.issn.0366-6964.2026.01.046

• 临床兽医 • 上一篇    下一篇

常山散对感染不同发育阶段球虫雏鸡盲肠机械屏障的影响

郭志廷1,2(), 孙焕焕1, 刘淑宁1, 李建喜2, 张少博2, 刘圆2, 罗晓琴2, 魏小成1, 李成义1()   

  1. 1.甘肃中医药大学药学院,兰州 730000
    2.中国农业科学院兰州畜牧与兽药研究所,农业农村部兽用药物创制 重点实验室,甘肃省中兽医技术创新中心,兰州 730050
  • 收稿日期:2025-04-08 出版日期:2026-01-23 发布日期:2026-01-26
  • 通讯作者: 李成义 E-mail:guozhiting@caas.cn;gslichengyi@163.com
  • 作者简介:郭志廷,博士生,主要从事新兽药研发和中药药理学研究,E-mail:guozhiting@caas.cn
  • 基金资助:
    “十四五”国家重点研发计划项目(2023YFD1800803-4);国家自然科学基金地区项目(82160730);石家庄市政府与中国农科院战略合作项目(25010)

Effect of Radix dichroa Powder on Intestinal Mechanical Barrier of Chicks Infected with Coccidia at Different Developmental Stages

GUO Zhiting1,2(), SUN Huanhuan1, LIU Shuning1, LI Jianxi2, ZHANG Shaobo2, LIU Yuan2, LUO Xiaoqin2, WEI Xiaocheng1, LI Chengyi1()   

  1. 1.College of Pharmacy,Gansu University of Chinese Medicine,Lanzhou,Gansu Provicne 730000,China
    2.Key Lab of Veterinary Pharmaceutical Development,Ministry of Agriculture and Rural Affairs & Technology Innovation Center of Traditional Chinese Veterinary,Gansu Province,Lanzhou Institute of Husbandry and Pharmaceutical Sciences,Chinese Academy of Agricultural Sciences,Lanzhou 730050,China
  • Received:2025-04-08 Online:2026-01-23 Published:2026-01-26
  • Contact: LI Chengyi E-mail:guozhiting@caas.cn;gslichengyi@163.com

摘要:

旨在研究常山散对感染球虫不同发育阶段雏鸡肠道机械屏障的影响。试验分为6组,分别为攻虫前1天、攻虫当天,攻虫后第2、3、4和5天进行给药,每个试验组包括Ⅰ组(健康对照组)、Ⅱ组(感染对照组)和Ⅲ组(常山散推荐剂量组)。给药结束采集各组鸡盲肠制作病理切片,应用Image Pro PLUS 6.0图像软件对肠紧密连接蛋白Occludin和Claudin-1进行免疫组化分析,测定肠道杯状细胞和黏蛋白的分泌情况。结果表明:与Ⅰ组相比,Ⅱ组和Ⅲ组Occludin蛋白、Claudin-1蛋白和肠黏蛋白表达量显著降低(P<0.05),杯状细胞数显著减少(P<0.05)。与Ⅱ组相比,攻虫前1天至攻虫后第3天给药,Ⅲ组以上三种蛋白表达量明显升高(P<0.05),杯状细胞数增多;但随着球虫在鸡体内不断发育和给药时间的推迟,攻虫后第4和5天给药Ⅱ组和Ⅲ组以上3种蛋白表达量很少(P>0.05),杯状细胞消失。综上,常山散可减轻球虫对宿主肠道的破坏,促进肠道屏障蛋白分泌,减轻球虫对肠道结构的损害;且攻虫后越早给药,对球虫造成的肠道损伤改善效果越好。

关键词: 常山散, 雏鸡, 球虫, 肠道, 机械屏障

Abstract:

The aim of this study was to investigate the effect of Radix dichroapowder (RDP) on intestinal mechanical barrier at different developmental stages of chicks infected with coccidia. The experiment was divided into 6 groups, which were administered on the day before the challenge, the day of the attack, and the 2nd, 3rd, 4th and 5th days after the attack.Each experimental group included Group I (Healthy control group), Group Ⅱ (Infection control group) and Group Ⅲ (RDP recommended dose group). At the end of the administration, the chick cecum of each group were collected to make pathological sections. The immunohistochemical analysis of intestinal tight junction proteins occludin and claudin-1 were performed by Pro PLUS 6.0 image software, and the secretion of intestinal goblet cells and mucin were determined.The results showed that compared with Group Ⅰ, the expression levels of occludin protein, claudin-1 protein, and intestinal mucin in Group Ⅱ and Group Ⅲ were significantly reduced (P<0.05), and the number of goblet cells was significantly decreased (P<0.05). Compared with Group Ⅱ, the expression of the above three proteins of Group Ⅲ were significantly improved (P<0.05), and the number of goblet cells were increased from the day before the challenge to 3 days after the challenge. However, with the continuous development of coccidia in chicks and the delay in administration time, the above three proteins in Group Ⅱ and Group Ⅲ were markedly decreased on the 4th and 5th day of challenge (P>0.05), and the goblet cells disapeared.In summary, RDP can reduce the damage of coccidia to the host intestinal tract, improve the secretion of intestinal barrier protein, and reduce the damage of coccidia to the intestinal structure; the earlier the drug is administered after the challenge, the better the improvement of intestinal damage caused by coccidia.

Key words: Radix dichroa powder, chicks, coccidia, intestine, mechanical barrier

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