数字农科院2.0

内毒素脂多糖对产后奶牛繁殖性能的影响及其机制

文献类型: 中文期刊

作者: 赵善江;郝海生;杜卫华;赵学明;王皓宇;朱化彬

作者机构:

关键词: 奶牛子宫;卵巢;革兰氏阴性菌;LPS;TLR4-p65

期刊名称:中国畜牧杂志

ISSN: 0258-7033

年卷期: 2016 年 52 卷 09 期

页码: 74-79

收录情况: 北大核心

摘要: 实际生产中,奶牛产后繁殖疾病高发,尤其是上生殖道产后感染疾病,对奶牛繁殖性能造成严重的不良影响。革兰氏阴性菌是产后奶牛上生殖道感染最主要的细菌之一,其细胞壁的裂解产物内毒素脂多糖(lipopolysaccharide,LPS)作为一种病原模式分子(pathogen-associated molecular patterns,PAMPs),可被子宫内膜上皮细胞膜表面Toll样受体4(Toll-like receptor 4,TLR4)识别、结合,然后激活TLR4-核转录因子p65(transcription factor p65)通路,引发盆腔炎性反应,造成子宫上皮黏膜损伤。同时,LPS能够透过已被破坏的子宫上皮黏膜移行进入血液循环,甚至进入卵泡液中,影响下丘脑-垂体-子宫/卵巢轴的正常生殖内分泌功能以及子宫和卵巢的正常机能,最终降低奶牛繁殖性能。近年来,关于LPS对奶牛繁殖性能的影响已有广泛研究,本文着重阐述脂多糖LPS对产后奶牛生殖内分泌、子宫与卵巢机能的影响及其机制,以期为奶牛生产工作中提高产后奶牛繁殖性能提供理论支持。

分类号: S858.23

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