The relationship between changes in activity of Na~+-K~+-ATPase and carbonic anhydrase of ciliary body and traumatic ocular hypotony
- VernacularTitle:睫状体Na~+-K~+-ATP酶和碳酸酐酶活性变化与外伤性低眼压的关系
- Author:
Jianhe XIAO
;
Maonian ZHANG
- Publication Type:Journal Article
- Keywords:
trauma, anterior proliferative vitreoretinopathy(aPVR), chronic hypotony, Na +-K +ATPase, carbonic anhydrase
- From:
Medical Journal of Chinese People's Liberation Army
1983;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the changes in the activity of two important enzymes related to the productivity of aqueous humor, namely Na +-K +ATPase and carbonic anhydrase, and to probe further into the mechanism of induction of chronic ocular hypotony by traumatic anterior proliferative vitreoretinopathy. Methods A rabbit model of chronic hypotony induced by traumatic anterior proliferative vitreoretinopathy was reproduced. At the 2nd , 4th, 8th and 16th week after trauma, IOP was measured. Then eyeballs were removed, and a part of ciliary body was harvested for orthodox pathological section and HE staining, and another part of ciliary body was used for determination of Na +-K +ATPase's activity and histochemical assessment of carbonic anhydrase. Result Activity of Na, K-ATPase decreased gradually in the experimental group, but there is no remarkable change in the control group, and the difference was significant. In the experimental group, the activity of carbonic anhydrase was nearly normal, but the activity of carbonic anhydrase in the area of injured epithelium was low, and it was similar to the control. Conclusion Activity of ciliary Na +-K +-ATPase and carbonic anhydrase decrease in activity after traumatic anterior proliferative vitreoretinopathy, which is an important causative factor of chronic hypotony.
