Journal
EXPERIMENTAL EYE RESEARCH
Volume 78, Issue 3, Pages 699-703Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.exer.2003.09.018
Keywords
lens; Na,K-ATPase; Ca-ATPase; SERCA; PMCA
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Funding
- NEI NIH HHS [EY09532, EY06916] Funding Source: Medline
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In the lens, different cells appear to be specialized such that some have a high capacity for energy-dependent ion transport while others do not. This short review describes the distribution of functional Na,K-ATPase activity and Ca-ATPase activity in the lens. Movement of ions in the extracellular space between lens fibers, a topic studied by David Maurice 25 years ago, is discussed together with cell-to-cell movement of ions which is facilitated by extensive coupling in the lens cell mass. The expression of different Na,K-ATPase and Ca-ATPase isoforms in lens epithelium and fiber cells is considered along with mechanisms that potentially regulate the activity of these transport proteins. (C) 2003 Published by Elsevier Ltd.
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