Journal
JOURNAL OF ETHNOPHARMACOLOGY
Volume 141, Issue 1, Pages 290-300Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.jep.2012.02.034
Keywords
PI3K/Akt/mTOR; Signaling; BAFF/BAFF-R; Collagen induced arthritis; Paeoniflorin
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Funding
- National Natural Science Foundation of China [30973543, 31100640]
- Anhui province Natural Science Foundation [11040606M195]
- financial assistance project of scientific research funds of doctor [XJ200808]
- Young Talents Foundation of the Education Department of Anhui Province [2010SQRL067]
- Natural Science Foundation of the Education Department of Anhui Province [KJ2010B406, KJ2010B398]
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Ethnopharmacological relevance: Paeoniflorin (Pae) is extracted from the root of paeonia lactiflora which have attracted attention for anti-rheumatic and immune modulating properties. Aim of the study: To investigate the role of PI3K/Akt/mTOR signaling mediated by BAFF/BAFF-R in antibodies production and the regulation of Pae on the signaling pathway in rats with collagen-induced arthritis (CIA). Materials and methods: CIA rats were randomly separated into different groups and treated with Pae (25, 100 mg/kg) from day 18 to day 38 after immunization. The effects of Pae on B lymphocytes of CIA rats were evaluated by the levels of BAFF, anti-CII antibody, IgA, IgG and IgM, and the expressions of BAFF-R, P13K, p-Akt and mTOR. Results: In CIA rats, the levels of anti-CII antibody, IgA, IgG and IgM in serum enhanced, BAFF, BAFF-R, PI3K, p-Akt and mTOR were highly expressed. Pae (100 mg/kg) obviously decreased arthritis score, relieved ankle and paw swelling, improved spleen histopathology in CIA rats, decreased the levels of IgA, IgM, IgG and anti-CII antibody, and significantly decreased the expressions of BAFF, BAFF-R, PI3K, p-Akt and mTOR. Conclusion: PI3K/Akt/mTOR signaling mediated by BAFF/BAFF-R participates in antibodies production by B lymphocytes of CIA rats. Pae had therapeutic effects on rats with CIA. These effects might be relative to regulating PI3K/Akt/mTOR signal mediated by BAFF/BAFF-R, and down regulate the antibodies production further. (c) 2012 Elsevier Ireland Ltd. All rights reserved.
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