Pressure-dependent changes in nuclei and the process origins of the endothelial cells lining Schlemm's canal.

Abstract:

:Monkeys eyes were fixed with glutaraldehyde in vivo at positive intraocular pressure of 35 or 25 mm Hg and compared with eyes fixed without a positive pressure gradient, with the use of light microscopy and transmission and scanning electron microscopy. The entire endothelial lining of the inner wall of Schlemm's canal ballooned or distended toward the external wall of the canal at positive intraocular pressure. Characteristic nuclear shapes were identified and appeared to result from the increased pressure forcing the lining away from the meshwork opposed by a restraining or anchoring effect of cytoplasmic processes attached to the subendothelial cells and trabecular meshwork. Without positive intraocular pressure endothelial cell nuclei were rounded, with many folds and notches in the nuclear membrane and were not deformed by their cytoplasmic processes. These findings suggest that the cells may be capable of elastic recoil or contraction.

authors

Johnstone MA

keywords:

subject

Has Abstract

pub_date

1979-01-01 00:00:00

pages

44-51

issue

1

eissn

0146-0404

issn

1552-5783

journal_volume

18

pub_type

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