RESUMEN
Objective:To research the autoimmune mechanism of prolactin(PRL) in uveitis by observing prolaictin′s effects on peripheral blood mononuclear cells(PBMC) proliferation and activation at different concentration.Methods:1.The serum prolactin levels of uveitis and control were checked by chemical spectrometer. 2.To research the effects of different concentration PRL on uveitis PBMC′s proliferation and activation under the soluble antigen(S-Ag) stimulation. PBMC separated from uveitis and control,were cultured with S-Ag and different concentration PRL,and then were assayed the percentage of CD3~+CD25~+ positive cell through double-stain immunofluorescence flow cytometry after 108 h. After cultured 96 h, ~3H-TdR was mixed and counts per minute were assayed after 12 h.Results:1.There was no significance between the uveitis and control refer to the serum PRL level(t=1.936,P=0.051). 2.When uveitis′ PBMC was positive to S-Ag, there had promote proliferation and activation of PBMC with PRL concentration at 12.5-1 000 ?g/L,with the media concentration at 200 ?g/L,while it became weakened at 1 000 ?g/L(activation t=2.736,P=0.012;proliferation t=2.547,P=0.036).When uveitis′ PBMC was negative to S-Ag,there had no action as before.Conclusion:1.There is no significance between the uveitis and control refer to the serum PRL level. 2.Media concentration PRL(200 ?g/L) and S-Ag have costimulation to promote PBMC proliferation and activation in uveitis,though high concentration PRL loses the function.