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Intraductal Injection of LPS as a Mouse Model of Mastitis: Signaling Visualized via an NF-κB Reporter Transgenic
Published on: September 4, 2012
Cepharanthine attenuates lipopolysaccharide-induced mice mastitis by suppressing the NF-κB signaling pathway
Zhou Ershun1, Fu Yunhe, Wei Zhengkai
1Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, 130062, People's Republic of China.
Abstract:
Cepharanthine (CEP), a biscoclaurine alkaloid isolated from Stephania cepharantha Hayata, has been reported to have potent anti-inflammatory properties. However, the anti-inflammatory effects of CEP on a mouse model of lipopolysaccharide (LPS)-induced mastitis and its underlying molecular mechanisms remain to be elucidated. The purpose of the present study was to investigate the effects of CEP on LPS-induced mouse mastitis. The mouse model of mastitis was induced by inoculation of LPS through the canals of the mammary gland. CEP was administered intraperitoneally at 1 h before and 12 h after induction of LPS. The results show that CEP significantly attenuates the infiltration of neutrophils, suppresses myeloperoxidase activity, and reduces the levels of TNF-α, IL-1β, and IL-6 in LPS-induced mouse mastitis. Furthermore, CEP inhibited the phosphorylation of NF-κB p65 subunit and the degradation of its inhibitor IκBα. All the results suggest that CEP exerts potent anti-inflammatory effects on LPS-induced mouse mastitis. Accordingly, CEP might be a potential therapeutic agent for mastitis.
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