Fibronectin content in the milk and blood of mothers and in the blood of their newborns

Abstract

The infant's resistance to infection is largely determined by the biologically active substances in the woman's milk: immunoglobulins, proteins of the complement system, interferon, lysozyme, lactoperoxidase, lactoferrin, etc. There are single works, which show the presence of fibronectin protein in women's milk. One of the main functions of this protein is its opsonic activity in phagocytosis reactions, which allows to consider it as a nonspecific protection factor capable of taking part in the formation of antimicrobial immunity of newborns.