Related Experiment Videos
Corneal disorders in KKAy mouse: a type 2 diabetes model
Hiroko Watanabe1, Chikako Katakami, Satoshi Miyata
1Department of Ophthalmology, Kobe University School of Medicine, Kobe, Japan.
Japanese Journal of Ophthalmology
|June 14, 2002
Summary
Type 2 diabetes in KKAy mice causes significant corneal changes, including epithelial fragility, opacities, and basement membrane thickening. These findings offer insights into diabetic corneal complications in humans.
Area of Science:
- Ophthalmology
- Diabetology
- Cell Biology
Background:
- Type 2 diabetes is associated with various ocular complications.
- Corneal health is crucial for vision, and diabetic conditions can impair corneal integrity.
Purpose of the Study:
- To investigate clinical and histopathological corneal changes in KKAy mice, a model for type 2 diabetes.
- To explore the underlying mechanisms of these diabetic corneal alterations.
Main Methods:
- Corneal epithelial cell proliferation assessed using (3H)-thymidine autoradiography in KKAy and control mice.
- Clinical examinations and histopathological analyses performed on both groups.
Main Results:
- KKAy mice exhibited elevated blood glucose and body weight.
- Observed corneal changes included fragile epithelial attachment, subepithelial opacities, basement membrane thickening, calcium deposits, and neovascularization.
- Advanced glycation end products (Pyrraline) and altered collagen IV and laminin distribution were noted.
Conclusions:
- KKAy mice develop distinct corneal disorders mirroring those seen in human diabetes.
- These findings contribute to understanding the pathogenesis of corneal complications in non-insulin-dependent diabetes mellitus.