Abstract Title:

HS-23, a Lonicera japonica extract, reverses sepsis-induced immunosuppression by inhibiting lymphocyte apoptosis.

Abstract Source:

J Ethnopharmacol. 2015 Aug 2 ;171:231-9. Epub 2015 Jun 9. PMID: 26068428

Abstract Author(s):

So-Jin Kim, Joon-Sung Kim, Hyo-Sun Choi, Young-Mok Kim, Sung-Woon Hong, Sung Hum Yeon, Yeon Kim, Sun-Mee Lee

Article Affiliation:

So-Jin Kim


ETHNOPHARMACOLOGICAL RELEVANCE: Lonicera japonica Thunberg, a widely used traditional Chinese medicine, possesses antibacterial, antiviral, and antiendotoxin activities. This study investigated the molecular mechanisms of HS-23, the ethanol extract of the dried flower buds of L. japonica, on sepsis-induced immunosuppression.

MATERIALS AND METHODS: Male ICR mice were intravenously administered HS-23 (10, 20, and 40mg/kg) immediately (0h) and 22h after cecal ligation and puncture (CLP). The spleen was isolated for biochemical assays 24h after CLP.

RESULTS: HS-23 improved sepsis-induced mortality. CLP induced a marked decrease in the number of splenocytes, B cells, and natural killer cells, which was attenuated by HS-23. HS-23 also attenuated CLP-induced apoptosis in CD4(+) and CD8(+) T cells and inhibited both the intrinsic and extrinsic apoptotic pathway in the spleen. HS-23 attenuated the CLP-induced decrease in interleukin (IL)-17 production. CLP significantly decreased splenic production of tumor necrosis factor-α and IL-2, and these effects were attenuated by HS-23.

CONCLUSION: Our findings suggest that HS-23 reverses immunosuppression during the late phase of sepsis by inhibiting lymphocyte apoptosis and enhancing Th1 cytokine production. HS-23 warrants further evaluation as a potential therapeutic agent for the treatment of sepsis.

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