Effect of transforming growth factor-β1 on acute lung injury caused by paraquat

Kan,Baotian; Jian,Xiangdong; Zhou,Qian; Wang,Jieru; Yu,Guangcai; Sun,Jing; Gao,Yikai

doi:10.3892/mmr.2014.1938

Effect of transforming growth factor-β1 on acute lung injury caused by paraquat

Authors:
- Baotian Kan
- Xiangdong Jian
- Qian Zhou
- Jieru Wang
- Guangcai Yu
- Jing Sun
- Yikai Gao
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Affiliations: Department of Poisoning and Occupational Disease, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
Published online on: February 7, 2014 https://doi.org/10.3892/mmr.2014.1938
Pages: 1232-1236

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Abstract

In China, and other Asian countries, numerous patients have succumbed to pulmonary fibrosis induced by paquarat poisoning, but the early pathogenesis remains unclear. In this study the effect of cytokine transforming growth factor (TGF)-β1 was observed in early acute paraquat poisoning and examined the mechanism by which paraquat caused early acute lung injury. It was discovered that the rat serum TGF-β1 levels in the paraquat groups were significant higher than that in the control group (P<0.05) and the rat pulmonary TGF-β1 mRNA expression levels were also higher than that in the control group (P<0.05). Histological examination indicated that the rat lung tissue was broad and congested, and had been infiltrated by inflammatory cells. Masson's trichrome staining for collagen showed that the lung tissue appeared fibrotic following paraquat poisoning. Ultramicrostructure observation found that macrophages, red blood cells, lymphocytes and granulocytes infiltrated the alveolar space and there were cytolysosomes in the macrophages. The shape of the type II alveolar epithelial cell nuclei were irregular with karyopyknosis. The heterochromatin migrated to the cell edge and lamellar body vacuolization was also observed. Type I alveolar epithelial cells shrank. In conclusion, the effect of cytokine TGF-β1 on paraquat-induced acute lung tissue injury may be important.

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