CHEN Jun-xiang, et al. Alteration of the expression of PTEN in rats with aging[J]. Journal of Chongqing Medical University, 2010,35(5):648-651. DOI: 10.13406/j.cnki.cyxb.2010.05.029.
Objective:To investigate the alteration of the expression of PTENin rats with aging.Methods:Wistar rats were divided into 3 groups:3-month-old group
12-month-old group and 24-month-old group(n=6).Immunohistochemistry of CD34 was employed to detecte angiogenesis in the kidneys with aging.The protein expression of PTEN was examined by Western Blot.Immunohistochemistry was also employed to detect the expression of PTEN in the kidneys with aging.Results:(1)Compared with 3-month-old rats and 12-month-old rats
the level of PTEN protein expression in kidneys of 24-month-old rats was higher than that of 3-month-old rats and 12month-old rats
as examined by Western Blot(P<0.05);(2) With aging
the positive percentages of PTEN expression in the kidneys were increased
as detected by Immunohistochemistry(P< 0.05);(3)With aging
impaired angiogenesis was found in renal tissues of Wistar rats.At the age of 24 months
the glomerular capillary density and the peritubular capillary density were lower than that of 3-month-old rats and 12-month-old rats(P<0.05)
which were correlated negatively with the protein expression of PTEN in kidneys(r=-0.761 and-0.613
P<0.05).Conclusion:PTEN could promote age-related renal insenecence through affecting angiogenesis.