Effects of Degraded and Natural Polysaccharides from Porphyra Haitanensis on Proliferation of Lymphocytes / 中药新药与临床药理

ABSTRACT

Objective To analyze the property of natural polysaccharides(P) from Porphyra haitanensis T. J. Chang et B. F. Zheng and its degraded polysaccharides(P3),and to investigate their effects on proliferation of lymphocytes. Methods P3 and P were identified by IR spectra. Their effects on immunological function were studied by cell culture technique. Results P3 and P displayed significant effects on promoting the proliferation of T-lymphocytes,and had inhibitory effects on the proliferation of B-lymphocytes in a dose-dependent manner. The effects of P3 were more powerful than P. Conclusion The degraded and natural polysaccharides from Porphyra haitanensis(P3 and P) can regulate the proliferation of lymphocytes,which may be related to their molecular weights.