Objective To observe the dynamic expression of nestin and glial fibrilary acidic protein (GFAP) in the development of retina in rats.Methods In 48 Wistar rats, 24 were divided into 8 groups with 3 rats in each according to their age (1 day, 1 week, and 2, 3, 4, 7, 12, and 20 weeks old). The sagittal freezing sections of the eye were made; nestin/glutamine synthetase (GS) and GFAP/GS were stained by immunofluorescence and were observed under the confocal microscope. Total RNA was extracted from 18 rats which were divided into 6 groups according to the age (1 day, 1 week, and 2, 3, 4, and 12 weeks old) with 3 rats in each. The expression of nestin, GAFA and GS mRNA were detected by realtime quantitative reverse transcription polymerase chain reaction (RT-PCR). Müller cells were cultured from postnatal day 7-12 rats; the expression of nestin and GFAP was detected by immunostaining study. Double immunofluorescence was carried out between nestin/GS and GFAP/GS.Results One day after the birth, nestin positive cells were found in the whole retinal neuroblast layers with elongated retinal progenitor cells; the GFAP positive astrocytes were observed in the inner retina. One week after the birth, Müller glial cells expressed GS and nestin but not GFAP; GFAP positive cells localized in the inner retina.Two to 12 weeks after the birth, the expression of nestin in Müller cells decreased and even disappeared; the expression of GFAP in astrocytes didn't change much. The Müller cells expressed nestin but no GFAP in vitro. The expression of nestin and GFAP mRNA in retina was accordant with the results of immunofluorescence staining.Conclusion In the developing retina, the expression of nestin in Müller cells decreases gradually, and no expression of nestin can be found in adult rats; the expression of GFAP can't be observed in Müller cells in neonatal and adult rats.
Citation： 薛黎萍,丁鹏,江春光,胡竹林,肖丽波,刘海. The dynamic expression of nestin and glial fibrilary acidic protein in the development of retina in rats. Chinese Journal of Ocular Fundus Diseases, 2010, 26(3): 263-266. doi: Copy