An injectable liposome for sustained release of icariin to the treatment of acute blunt muscle injury

Author:

Wang Jinwu12,Zhu Gaosheng12,Wang Xingyu12,Cai Jie12,Xie Linzhen12,Zheng Wenhao12,Feng Yongzeng12,Guo Qiang12,Chen Hua12,Cai Leyi12ORCID

Affiliation:

1. Department of Orthopaedics, Wenzhou Medical University Second Affiliated Hospital, Wenzhou, China

2. Wenzhou Medical University, Wenzhou, China

Abstract

Abstract Objectives Icariin, extracted from Epimedium, is a kind of flavonoid and possesses osteogenesis and antioxidant. This study aimed to evaluate the therapeutic effects of icariin liposome on acute blunt skeletal muscle injury in rats. Methods Icariin liposome was prepared by the thin-film dispersion method. After muscle injury, the corresponding treatment measures were given every day for two weeks. Recovery and mechanism of muscle injury were evaluated by QRT-PCR, HE, immunohistochemistry, malondialdehyde, superoxide dismutase and serological tests. Key findings The particle size, polydispersity index, zeta potential, encapsulation efficiency and drug loading of icariin liposomes were 171.37 ± 38.23 nm, 0.27 ± 0.01, −5.59 ± 1.36 mV, 78.15 ± 2.04% and 15.62%, respectively. The QRT-PCR showed that icariin liposome significantly promoted the expression of MHCIIB and vimentin. Through HE, immunohistochemistry, ELISA and serological tests, we found that icariin liposome effectively promoted desmin expression, reduced collagen I expression and inhibited the production of pro-inflammatory factors, including TNF-α and IL-6. Icariin liposome therapy significantly reduced the level of malondialdehyde and increased the activity of superoxide dismutase. Conclusions Icariin liposome has excellent therapeutic effects on acute blunt muscle injury in rats by improving immunity, repairing cytoskeleton and cellular integrity, anti-inflammation, anti-fibrosis and antioxidant stress.

Funder

National Natural Science Foundation of China

the Zhejiang Medical and Health Science and Technology Plan Project

Publisher

Oxford University Press (OUP)

Subject

Pharmaceutical Science,Pharmacology

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