RESUMO
AIM To investigated the effect and mechanism of Houttuynium (HOU) on splenectomy animals. METHODS The models of splenectomy mice and splenectomy rats were made and delayed type hypersensitivity (DTH) reaction, ANAE (+) cell percentage of peripheral blood lymphocytes, Con A-induced thymus and groin lymph node lymphocyte proliferation, the amount of lymphocytes of groin lymph node,and T cell subpopulation in peripheral blood were measured. RESULTS HOU ig (60 mg*kg-1, 120 mg*kg-1) can strikingly enhanced delayed type hypersensitivity (DTH) reaction, ANAE(+) cell percentage of peripheral blood lymphocytes. strengthened Con A-induced groin lymph node lymphocyte proliferation, raised the amount of lymphocytes of groin lymph node in splenectomy mice. But the effects of them on Con A-induced thymus lymphocyte proliferation were not apparent. HOU ig (40 mg*kg-1, 80 mg*kg-1) improved Th subset, reduced Ts subset, and then modulated the rate of Th/Ts in splenectomy rats. CONCLUSION HOU strengthened the cellar immune function of splenectomy animals by promoting the compensating capability of lymph node and regulating T cell subpopulation.
RESUMO
Neurotrophic factors are proteins that play an important role in the development and maintenance of neural networks. They released in the brain's response to injury and in neurodegenerative disorders and took part in the protective process. The fact that they can be used to prevent damage to neurons associated with brain lesions in animal models of neurodegenerative disorders supports the above mentioned hypothesis as well. However, they are proteins that do not easily cross the blood brain barrier. The induction of neurotrophic factors by systemically administered some medicines would be an elegant way to overcome problems of application.