Journal of North Khorasan

Background & Objectives: Despite the serious effects of smoking, about 25 to 30% of women interest to smoke during pregnancy. Nicotine interfere the developmental process. The aim of this study was to evaluate the maternal nicotine effects on fibronectine expressions in newborn kidney extracellular matrix. Material and Method: eighteen pregnant mice were used for this study that followed to the E6 day. To mice in experimental group 3mg/kg /day nicotine and to ones in control 3ml/kg/day normal saline administrated intraperitoneally. On the first day of delivery the left Neonatal kidney tissue was used for Immunohistochemistry(IHC) examination and right kidney for RT-PCR test. Results: THE IHC results that analyzing with kruskal walis showed fibronectine accumulated significantly in glomerule and proximal convoluted tubule matrix in mice received nicotine(P<0.05). The RT-PCR results proved this finding. Conclusion: Nicotine induces the production of Fibronectin in kidney extracellular matrix that reduce the Possibility of Glomerular filtration rate and glomerular sclerosis.