Expression and position fixing of bFGF in retina of diabetic rabbits / 吉林大学学报(医学版)

ABSTRACT

Objective To investigate the expression period of bFGF and the correlation between the M?ller cells in retina and the increasing of bFGF expression in diabetic rabbits.Methods Sixteen rabbits were divided randomly into normal control and diabetic groups.After the models of diabetic rabbits were set up,the rabbits were breeded for 7 weeks.The immunofluorescence double labeling method and laser confocal microscopy were used to observe the ratina of the diabetic rabbits and the position fixing of bFGF was studied.Results In normal control group,the structure of each layer of retina was clear,the cell lined up tightly and regularly with normal shape,the location with red fluorescence was M?ller cells signaled with GFAP,labeled with bFGF,only on capillary basement membrane the red fluorescence could be found.In diabetic group,the structure of each layer of retina was clear,the cells of INL and GCL lined up loosely,the intercellular space increased,there was no significant difference compared with normal group on cell shape.Labeled with bFGF,the different intensity red fluorescence could be found in each layer cells,double labeled with GFAP and bFGF,the yellow fluorescence could be found.The retinopathy of diabetic rabbit was in BDR stage.The expression of bFGF increased in this stage.The bFGF and GFAP coexpressed in M?ller cells.Conclusion The bFGF begins to express in the M?ller cells from the BDR stage.