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Journal of Biomedicine and Biotechnology
Volume 2009 (2009), Article ID 619487, 8 pages
http://dx.doi.org/10.1155/2009/619487
Research Article

Pyrrolidine Dithiocarbamate Attenuates Paraquat-Induced Lung Injury in Rats

Department of Occupational Health and Toxicology, School of Public Health, Fudan University, Shanghai 200032, China

Received 27 February 2009; Accepted 26 May 2009

Academic Editor: Michael Cunningham

Copyright © 2009 Xiuli Chang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Paraquat (PQ) has been demonstrated that the main target organ for the toxicity is the lung. This study aimed to investigate the potential protective effect of PDTC on the PQ-induced pulmonary damage. Fifty-four rats were divided into control, PQ-treated and PQ+PDTC-treated groups. Rats in the PQ group were administrated 40 mg/kg PQ by gastric gavage, and PDTC group with 40 mg/kg PQ followed by injection of 120 mg/kg PDTC (IP). On the days 3, 7, 14 and 21 after treatments, the activities of GSH-Px, SOD, MDA level and the content of HYP were measured. TGF- 𝛽 1 mRNA and protein were assayed by RT-PCR and ELISA. MDA level in plasma and BALF was increased and the activities of GSH-Px and SOD were decreased significantly in the PQ-treated groups ( 𝑃 < . 0 5 ) compared with control group. While the activities of GSH-Px and SOD in the PQ+PDTC-treated groups was markedly higher than that of PQ-treated groups ( 𝑃 < . 0 5 ), and in contrast, MDA level was lower. TGF- 𝛽 1 mRNA and protein were significantly lower in the PQ+PDTC-treated groups than that of PQ-treated groups ( 𝑃 < . 0 5 ). The histopathological changes in the PQ+PDTC-treated groups were milder than those of PQ groups. Our results suggested that PDTC treatment significantly attenuated paraquat-induced pulmonary damage.