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应用酶联免疫法分别测定产后～3天、～7天及～42天母乳中α－肿瘤坏死因子（α－TNF）含量。结果显示：产后～3天组、～7天组α－TNF含量较高。～42天组较低。但P值均＞0．05无显著差异。母乳中α－TNF含量与孕周胎次及产式相关，早产第二胎及非顺产婴儿包括剖宫产、产钳及胎头吸引者含量较高，P＜0．05。于应激状态下去。婴儿有窒息或宫内窘迫者母乳中α－TNF含量增高明显，P＜0．005。本研究说明母乳喂养可提供新生儿α－TNF。有利于促进婴儿免疫系统的成熟。对有应激状态的婴儿，更应该强调授于母乳。
The levels of α-TNF in breast milk were measured by enzyme-linked immunosorbent assay (ELISA) at 3 days, 7 days and 42 days postpartum. The results showed that the levels of α-TNF in postpartum ~ 3 days and ~ 7 days groups were higher. ~ 42 days group lower. But P values were> 0.05 no significant difference. The content of α-TNF in breast milk was related to gestational week parity and formula, and the content of cesarean section, forceps and fetus head fetus were higher in preterm second and nonbreeding infants, P <0.05. Go under stress. Α-TNF levels in breast milk increased significantly in infants with asphyxia or intrauterine distress, P <0.005. This study shows that breastfeeding can provide neonatal α-TNF. Help to promote the baby’s immune system maturation. For stressed infants, more emphasis should be given to breast milk.