Diabetes Reduces Autophosphorylation of Retinal Insulin Receptor and Increases Protein-Tyrosine Phosphatase-1B Activity
Author(s) -
Raju V. S. Rajala,
Brandt Wiskur,
Masaki Tanito,
Michelle C. Callegan,
Ammaji Rajala
Publication year - 2009
Publication title -
investigative ophthalmology and visual science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.935
H-Index - 218
eISSN - 1552-5783
pISSN - 0146-0404
DOI - 10.1167/iovs.08-2851
Subject(s) - autophosphorylation , retina , insulin receptor , irs1 , biology , phosphorylation , retinal , phosphatase , protein tyrosine phosphatase , western blot , microbiology and biotechnology , chemistry , biochemistry , medicine , endocrinology , insulin , protein kinase a , insulin resistance , neuroscience , gene
Protein-tyrosine phosphatase-1B (PTP1B) has been implicated in the negative regulation of insulin signaling. The expression, activity, and functional role of PTP1B in the retina are unknown. In this study, the authors examined the relationship between the retinal insulin receptor (IR) and PTP1B in normal and diabetic mouse retinas.
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