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DOI: 10.1055/s-0031-1298212
© Georg Thieme Verlag KG Stuttgart · New York
Geniposide, an Iridoid Glucoside Derived from Gardenia jasminoides, Protects against Lipopolysaccharide-Induced Acute Lung Injury in Mice
Publikationsverlauf
received July 4, 2011
revised January 1, 2012
accepted January 10, 2012
Publikationsdatum:
21. Februar 2012 (online)
![](https://www.thieme-connect.de/media/plantamedica/201206/lookinside/thumbnails/10.1055-s-0031-1298212-1.jpg)
Abstract
Geniposide, a main iridoid glucoside component of gardenia fruit, has been shown to possess anti-inflammatory activity. However, its potential use for acute lung injury (ALI) has not yet been studied. The aim of this study was to evaluate the anti-inflammatory properties of geniposide using a mouse ALI model. ALI was induced by intranasal injection of lipopolysaccharide (LPS). Pretreatment of mice with geniposide (20, 40, or 80 mg/kg) resulted in a marked reduction in inflammatory cells and total protein concentration in the bronchoalveolar lavage fluid (BALF) of mice. Levels of inflammatory mediators, including tumour necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-10 (IL-10), were significantly altered after treatment with geniposide. Histological studies using hematoxylin and eosin (H&E) staining demonstrate that geniposide substantially inhibited LPS-induced alveolar wall changes, alveolar haemorrhage, and neutrophil infiltration in lung tissue, with evidence of reduced myeloperoxidase (MPO) activity. In addition, we investigated potential signal transduction mechanisms that could be implicated in geniposide activity. Our results suggest that geniposide may provide protective effects against LPS-induced ALI by mitigating inflammatory responses and that the compound's mechanism of action may involve blocking nuclear factor-kappaB (NF-κB) and mitogen-activated protein kinases (MAPK) signalling pathway activation.
Key words
geniposide - lipopolysaccharide - acute lung injury - cytokine - nuclear factor-kappaB - mitogen-activated protein kinases - Gardenia jasminoides - Rubiaceae
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1 Yang Xiaofeng and Cai Qinren contributed equally to this work.
Prof Jiang Lanxiang
Department of Dermatology
Second Hospital of Jilin University
Changchun
Jilin 130041
People's Republic of China
Telefon: +86 4 31 88 79 67 11
eMail: jianglanxiang@sohu.com
Prof Dr Deng Xuming
Department of Veterinary Pharmacology
College of Animal Science and Veterinary Medicine
Jilin University
Changchun
Jilin 130062
People's Republic of China
Telefon: +86 4 31 87 83 61 61
Fax: +86 4 31 87 83 61 60
eMail: xumingdeng@jluhp.edu.cn