Effect of passive smoking during pregnancy on the expression of TNF-? and CINC in the lungs of neonatal rats / 中华围产医学杂志

ABSTRACT

Objective To determine the effect of passive smoking during pregnancy on the expression of tumor necrosis factor-? (TNF-?) and cytokine-induced neutrophil chemoattractant (CINC) in the lungs of neonatal rats. Methods Sprague Dawley rats were exposed to sidestream cigarette smoke on the 1, 8 and 15 day after pregnancy for a total of 2 h each day. Those rats who were put into the box without smoke exposure were as control. The neonatal rats were delivered by cesarean section on the 20th day of gestation and birth weight was measured. Reverse transcription polymerase chain reaction (RT-PCR) and enzyme-linked immunoadsorbent assay (ELISA) was performed to evaluate the expression of TNF-?、CINC mRNAs and TNF-? protein. Results The birth weight of neonatal rats born from those mothers who were exposed to sidestream cigarette smoke was significantly lower than that of control gruop(P