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Immunosuppressive Activity of Semen Persicae Ethanol Extract on Specific Antibody and Cellular Response to Ovalbumin in Mice
Author(s) -
Zhang YiBin,
Qin Feng,
Sun HongXiang
Publication year - 2006
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.200690105
Subject(s) - splenocyte , ovalbumin , concanavalin a , lipopolysaccharide , immune system , chemistry , antibody , in vitro , immunology , humoral immunity , pharmacology , endocrinology , medicine , biology , biochemistry
The immunosuppressive activity of the ethanol extract of Semen Persicae (EESP) was studied with respect to specific antibody and cellular response to ovalbumin (OVA) in mice. The effects of EESP on mice splenocyte proliferation in vitro were measured. EESP significantly suppressed concanavalin A (ConA)‐ and lipopolysaccharide (LPS)‐stimulated splenocyte proliferation in vitro in a concentration‐dependent manner. Furthermore, the effects of EESP at three dose levels on the humoral and cellular immune responses in the OVA‐immunized mice were examined. ICR Mice were immunized subcutaneously with OVA on day 0 and 14. Starting on the day of immunization, the mice were administered intraperitoneally with EESP at a single dose of 0.25, 0.5, and 1.0 mg, and cyclosporin A (CsA, positive drug) at a single dose of 0.1 mg at intervals of 7 days. On day 28, mitogen‐ and OVA‐induced splenocyte proliferation and OVA‐specific antibody level in serum were measured. EESP significantly decreased ConA‐, LPS‐, and OVA‐induced splenocyte proliferation in the OVA‐immunized mice at the dose of 1.0 mg. Meanwhile, the OVA‐specific serum IgG, IgG1, and IgG2b antibody levels in the OVA‐immunized mice were markedly reduced by EESP in a dose‐dependent manner. The results suggest that EESP could suppress the cellular and humoral immune response in mice, and deserve further research to be developed as immunosuppressant.