Acta Veterinaria et Zootechnica Sinica ›› 2021, Vol. 52 ›› Issue (1): 246-255.doi: 10.11843/j.issn.0366-6964.2021.026

• CLINICAL VETERINARY MEDICINE • Previous Articles     Next Articles

Effect of Jiawei Gegen Qinlian Decoction on the Regulation of Intestine Damage and Repair in the Piglets of Damp-heat Diarrhea

LIU Xiaoxi1, MA Yunfei2, LI Huanrong3, LIU Fenghua3, BAO Minglong1, ZHANG Jidong1, LIN Hongying1, XU Jianqin2*   

  1. 1. Department of Veterinary Medicine, College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524000, China;
    2. College of Veterinary Medicine, China Agricultural University, Beijing 100193, China;
    3. College of Animal Science and Technology, Beijing University of Agriculture, Beijing 102200, China
  • Received:2020-04-08 Online:2021-01-23 Published:2021-01-19

Abstract: The purpose of the study was to research the effect of Jiawei Gegen Qinlian Decoction (JGQLD) on the regulation of intestine damage and repair in the piglets of damp-heat diarrhea (DHD). Six piglets (8-15 days old) were selected as control group. Twenty-four piglets (8-15 days old) that with the symptom of DHD were divided into 4 groups, including DHD group, low dose, middle dose and high dose of JGQLD group, 6 piglets per group. Piglets in the control group and the DHD group were given normal saline. Piglets in medicine groups were given the JGQLD for 5 consecutive days (the doses were recorded as dried medicinal herb, 2.5 g·d-1 in the low dose group, 5.0 g·d-1 in the middle dose, and 10.0 g·d-1 in the high dose group). The fecal scores of piglets in all groups were recorded at 0, 3 and 5 day. In control group, DHD group and middle dose group of JGQLD, the duodenum, jejunum, ileum and colon of piglets were taken for tissue section and H.E. staining, while the duodenum was selected for proliferating cell nuclear antigen (PCNA) immune-histochemical staining. The mRNA expressions of TLR4, TNF-α, IL-1β and IL-6 in the jejunum of piglets from control group, DHD group and middle dose of JGQLD group were detected by real time PCR. In the DHD group, DHD destroyed the structure of small intestine and colon, especially the duodenum and jejunum. Compared with the control group, the PCNA expression in the duodenum crypt of the DHD group was significantly increased (P<0.05), the mRNA expressions of TLR4 (P<0.05), TNF-α (P<0.01), IL-1β (P<0.01) and IL-6 (P<0.05) in the jejunum of the DHD group were all increased significantly. Compared with the DHD group, the low, middle and high dose of JGQLD significantly decreased the fecal scores of piglets (P<0.05). The structures of duodenum, jejunum, ileum and colon in the middle dose of JGQLD group were improved and there were a few shedding villus in the lumen of duodenum. Compare with the DHD group, the PCNA expression in the duodenum villus of the middle dose group was extremely significantly increased (P<0.01), the mRNA expressions of TLR4 (P<0.05), TNF-α (P<0.01), IL-1β (P<0.01) and IL-6 (P<0.05) in the jejunum of the middle dose group were significantly decreased. JGQLD repaired the intestine damage of piglets with DHD by promoting the proliferation of crypt stem cells and reducing the intestinal inflammatory response.

Key words: Jiawei Gegen Qinlian Decoction, damp-heat diarrhea, piglets, intestinal inflammation, damage and repair

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