S-IgA及其动物肠道免疫功能

分泌型免疫球蛋白A（Secretory Immunoglobulin A，SIgA）是粘膜免疫最重要的执行者，是外分泌液中存在的一种最主要的抗体。sIgA在粘膜免疫中通过免疫清除、免疫屏障及中和作用等将病原微生物排出体外，达到保护机体的目的。本文就S-IgA的合成、转运、生物学功能、影响因素以及从动物营养角度的主要调控方法综述了近年来的研究进展。

S-IgA and It''''s Animal Gut Immunity Function

S-IgA is one of the most important member to carry on mucous immunity, and is the most important antibody in the exocrine liquid also. In mucous immunity, S-IgA can exclude the pathogeny microorganism to protect body through immunity eliminate, immunity barrier and counteract action et al. In this paper we will introduce the advanced research on the synthesis, transfer, biology function, influence factors and the regulation in animal nutrition way of S-IgA.