Modulation of TGFβ(2) and dopamine by PKC in retinal Müller cells of guinea pig myopic eye.

Abstract:

AIM:To investigate the effect of protein kinase C (PKC) on transforming growth factor-β(2) (TGFβ(2)) and dopamine in retinal Müller cells of guinea pig myopic eye. METHODS:Myopia was induced by translucent goggles in guinea pig, whose retinal Müller cells were cultured using the enzyme-digesting method. Retinal Müller cells were divided into 5 groups: normal control, myopia, myopia plus GF109203X, myopia plus PMA, myopia plus DMSO. PKC activities were detected by the non-radioactive methods. TGFβ(2) and tyrosine hydroxylase (TH) proteins were analyzed by Western Blotting in retinal Müller cells. Dopamine was determined by the high-performance liquid chromatography-electrochemical detection in suspensions. RESULTS:After 14 days deprived, the occluded eyes became myopic with ocular axle elongating. Müller cells of guinea pigs were obtained using enzyme digestion. Compared with normal control group, the increase in PKC activity and the up-regulation in TGFβ(2) expression were found in retinal Müller cells of myopic eyes, with the decrease of TH and dopamine content (P<0.05). After PKC activated by PMA, TGFβ(2) and TH content were up-regulated with the increase of dopamine content (P<0.05). While the PKC activities was inhibited by GF109203X, proteins of TGFβ(2) and TH were down-regulated in the myopic eyes, with the decrease of dopamine content (P<0.05). CONCLUSION:TGFβ(2) and dopamine are modulated by PKC in Müller cells of the myopic eyes in guinea pig.

journal_name

Int J Ophthalmol

authors

Mao JF,Liu SZ,Qin WJ,Xiang Q

doi

10.3980/j.issn.2222-3959.2011.04.06

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

357-60

issue

4

eissn

2222-3959

issn

2227-4898

pii

ijo-04-04-357

journal_volume

4

pub_type

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