Original Article

Effects of Coriolus versicolor polysaccharides peptides on electric activity of mediobasal hypothalamus and on immune function in rats

Guang-Di Yu, Qi-Zhang Yin, Yu-Min Hu, Zhi-Wei Yin, Zhen-Lun Gu, Zeng-Nian Qian, Zhong-Ming Qian


AIM: The nervous mechanism of the immune potentiating effect of Coriolus versicolor polysaccharides peptides (PSP) was studied in Wistar rats.
METHODS: The unit discharge of the mediobasal hypothalamus (MBH) neurons was recorded extracellularly and the lymphocyte proliferation was measured.
RESULTS: PSP 1 g.kg-1 ig for 5 d increased the T-lymphocytes and promoted T-lymphocyte proliferation in spleen and peripheral blood. This promoting effect of PSP was blocked by MBH lesion. PSP increased the discharge frequency of MBH neurons, but no increase in discharge frequency was observed after treatment of PSP plus immune inhibitor, cyclosporin A.
CONCLUSION: MBH is involved in the immune-potentiating effect of PSP.

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