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European Journal of Medical Research

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Open Access 01-12-2013 | Research

RETRACTED ARTICLE: Triptolide ameliorates lipopolysaccharide-induced acute lung injury in rats

Authors: Jianling Gao, Ying Zhan, Jun Chen, Lina Wang, Jianping Yang

Published in: European Journal of Medical Research | Issue 1/2013

Abstract

Background

Acute lung injury (ALI) is a serious clinical syndrome with a high rate of mortality. In this study, the effects of triptolide on lipopolysaccharide (LPS)-induced ALI in rats were investigated.

Methods

Sixty-five male Sprague Dawley rats(approved by ethics committee of the First Affiliated Hospital of Soochow University) were randomly divided into five groups. The control group was injected with 2.5 mL saline/kg body weight via the tail vein and intraperitoneally with 1% dimethyl sulfoxide (DMSO) (n = 5). The L group was administered with 0.2% LPS dissolved in saline (5 mg/kg) to induce ALI via the tail vein (n = 15). The TP1, TP2, and TP3 groups were treated as rats in the L group and then intraperitoneally injected with 25, 50, and 100 μg triptolide/kg body weight, respectively (15 rats per group). Blood samples from the left heart artery were taken for blood gas analysis at 1 hour before injection and at 1, 3, 6, and 12 hours after saline and DMSO administration in the control group, LPS injection in the L group, and triptolide injection in the TP1, TP2, and TP3 groups. Lung wet-to-dry weight (W/D) ratio, diffuse alveolar damage (DAD) score, TNF-α levels, and mRNA and protein expression of toll-like receptor 4 (TLR4) were analyzed.

Results

Compared with the control group, the arterial partial pressure of oxygen (PaO₂) declined (P <0.05), the W/D ratio and DAD score increased (P <0.05), and TNF-α levels in serum and bronchoalveolar lavage fluid (BALF) and mRNA and protein expression of TLR4 were significantly increased in the L group (P <0.05). Compared with the L group, PaO₂ significantly increased in the TP2 and TP3 groups (P <0.05), while the W/D ratio and DAD score were significantly decreased in the TP2 and TP3 groups (P <0.05). TNF-α levels and mRNA and protein expression of TLR4 were significantly decreased in the TP2 and TP3 groups compared with the L group (P <0.05).

Conclusions

Triptolide can ameliorate LPS-induced ALI by reducing the release of the inflammatory mediator TNF-α and inhibiting TLR4 expression.

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Title: RETRACTED ARTICLE: Triptolide ameliorates lipopolysaccharide-induced acute lung injury in rats
Authors: Jianling Gao
Ying Zhan
Jun Chen
Lina Wang
Jianping Yang
Publication date: 01-12-2013
Publisher: BioMed Central
Published in: European Journal of Medical Research / Issue 1/2013
Electronic ISSN: 2047-783X
DOI: https://doi.org/10.1186/2047-783X-18-58

Keynote webinar | Spotlight on medication adherence

Springer Medicine

RETRACTED ARTICLE: Triptolide ameliorates lipopolysaccharide-induced acute lung injury in rats

Abstract

Background

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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