Objective:To study the effects of Il 6?IL 1??TNF? on the growth and development of cultured human fetal cerebral neurons.Methods:Established the model of primary culture of human fetal cerbral neurons in SFFD,by morphological observation and MTT assay.Results:IL 6 and IL 1? both promote the survival of neurons and IL 6 also promote the outgrowth of neuritis and differentiation of neurons in culture.TNF ? continuously inhibit the survival of neurons.Conclusion:IL 6?IL 1??TNF? can effect the development of cultured neurons.IL 6 and IL 1? both may effect as neurotrophic factor in the survival?growth and development by indirect mechanism.TNF? directly show neurotoxin effect in culture.

Objective:To study the effects of IL 6、IL 1? and TNF? on the expression of c fos and c jun,which may provide the foundation for a further study in clinic.Methods:Used the a model of primary culture of human fetal cerebral neurons in serum free medium,by DNA RNA dot blot hybrdization.Results:The expression of c fos and c jun was increased between 15 min to 30 min after stimulation,reached a maximum at 1 h and declined over the subsequent 1 h.Conclusion:IL 6、IL 1? and TNF ? have induce the expression of c fos and c jun during development of human fetal cerebral neurons in vitro at the level of transcription.