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- Title
Ocular lesions in leptin receptor-deficient medaka (Oryzias latipes).
- Authors
Shin-ichi Chisada; Ayano Hirako; Akihiko Sugiyama
- Abstract
Ocular lesions in leptin receptor-deficient medaka were examined histopathologically at 10, 28, and 37 weeks post hatching. Leptin receptor-deficient medaka at 28 and 37 weeks old showed hyperglycemia and hypoinsulinemia. Histopathologically, vacuolation, swelling, fragmentation, and liquefaction of the lens fibers and dilatation of the retinal central veins, retinal capillaries, iridal veins and capillaries, and choroidal veins were observed in leptin receptor-deficient medaka at 28 and 37 weeks old. Thinning of the total retina, pigment epithelial layer, layer of rods and cones, outer granular layer, outer plexiform layer, inner granular layer, and inner plexiform layer was observed in leptin receptor-deficient medaka at 28 and 37 weeks compared with in control medaka. These histopathological characteristics in leptin receptor-deficient medaka are similar to characteristics in ocular lesions of rodent models for type II diabetes mellitus, making leptin receptor-deficient medaka a useful model of diabetic cataract and retinopathy.
- Subjects
HISTOPATHOLOGY; ORYZIAS latipes; LEPTIN receptors; HYPERGLYCEMIA treatment; DIABETES risk factors
- Publication
Journal of Toxicologic Pathology, 2018, Vol 31, Issue 1, p65
- ISSN
0914-9198
- Publication type
Article
- DOI
10.1293/tox.2017-0042