Abstract
Arabinoxylan extracted from rice bran has an impact on developing immune function and lipid metabolism. Regular aerobic exercise might improve serum immunoglobulin (Ig) concentration with B cell proliferation. Therefore, this study was planned to investigate the effect of arabinoxylan ingestion and regular aerobic exercise in rats for 4 weeks. Thirty-two Sprague-Dawley rats (aged 8wks) were divided into CON(control, n=8), ARA(arabinoxylan, n=8), EXE(aerobic exercise, n=8) and ARA+EXE (arabinoxylan+aerobic exercise, n=8) groups. ARA group was orally ingested with arabinoxylan for 4 weeks. EXE group ran on the rodent treadmill at 15m/min for 4 weeks (5d/w). ARA+EXE group performed both arabinoxylan ingestion and exercise for the same duration. Serum IgA, IgM, IgG concentration and TG, FFA, TC, HDL-C and LDL-C were anlayzed by ELISA kits. The concentration of IgA of ARA(p=.006), EXE(p=.027) and ARA+EXE(p=.013) were significantly higher than that of CON. However, IgM and IgG level had no differences between groups(p .05). TC level of ARA and EXE were significantly lower than that of CON(p.05), however there were no differences between groups in other lipid profiles(p.05). Taken together, regular arabinoxylan ingestion and aerobic exercise can increase IgA concentration, which improves immune function of mucous membrane and upper respiratory system.
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