Characterization of Novel Nonobese Type 2 Diabetes Rat Model with Enlarged Kidneys
Joint Authors
Katayama, Kentaro
Domon, Ayaka
Tochigi, Yuki
Suzuki, Hiroetsu
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-07-31
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
A variety of animal models of diabetes mellitus (DM) are required to study the genetics and pathophysiology of DM.
We established a novel rat strain showing nonobese type 2 diabetes with enlarged kidneys from the LEA.PET-pet congenic strain and named it Diabetes with Enlarged Kidney (DEK).
The body growth of DEK affected rats was similar to that of normal rats before the development of DM but was attenuated with the deterioration of DM.
There was a marked difference in the etiology of DEK by gender: DM phenotypes including polyuria, polydipsia, and hyperglycemia (nonfasting blood glucose over 300 mg/dl) were found in male rats aged over 10 weeks but not in female rats.
The cumulative incidence of DM in DEK males at the age of 30 weeks was 44.8%.
Oral glucose tolerance tests showed glucose intolerance and decreased insulin secretion in response to glucose loading in affected males, features which were exacerbated with age.
Affected males exhibited disorganized architecture of pancreatic islets, decreased numbers of β cells, and markedly decreased expression of insulin, despite no pathological findings of hemorrhage or infiltration of inflammatory cells in the pancreatic islet.
Age-related islet fibrosis appeared similar in normal and affected males.
Affected males also showed enlarged kidneys with dilation of renal tubules in both the cortex and medulla, but no obvious glomerular lesions typical of diabetic nephropathy (DN) at the age of 30 weeks.
Plasma levels of urea nitrogen and creatinine were normal, but hypoalbuminemia was detected.
These pathophysiological features in affected males indicated that their renal function was almost maintained despite severe DM.
Taken together, these findings indicate that the affected males of the DEK strain are a novel nonobese type 2 diabetes rat model useful for studying the mechanisms underlying β cell loss and identifying genetic factors protective against DN.
American Psychological Association (APA)
Domon, Ayaka& Katayama, Kentaro& Tochigi, Yuki& Suzuki, Hiroetsu. 2019. Characterization of Novel Nonobese Type 2 Diabetes Rat Model with Enlarged Kidneys. Journal of Diabetes Research،Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1173265
Modern Language Association (MLA)
Domon, Ayaka…[et al.]. Characterization of Novel Nonobese Type 2 Diabetes Rat Model with Enlarged Kidneys. Journal of Diabetes Research No. 2019 (2019), pp.1-9.
https://search.emarefa.net/detail/BIM-1173265
American Medical Association (AMA)
Domon, Ayaka& Katayama, Kentaro& Tochigi, Yuki& Suzuki, Hiroetsu. Characterization of Novel Nonobese Type 2 Diabetes Rat Model with Enlarged Kidneys. Journal of Diabetes Research. 2019. Vol. 2019, no. 2019, pp.1-9.
https://search.emarefa.net/detail/BIM-1173265
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1173265