Histological, ultrastructural and stereological analyses of pancreatic islets in glucocorticoid-treated rats
-
Published:2023
Issue:45
Volume:
Page:179-194
-
ISSN:1450-9636
-
Container-title:Kragujevac Journal of Science
-
language:en
-
Short-container-title:Kragujevac J Science
Author:
Glišić RadmilaORCID, Čakić-Milošević Maja, Ukropina Mirela, Mitrovski-Bogdanović AnaORCID, Stanković VesnaORCID
Abstract
Dexamethasone is a synthetic glucocorticoid commonly used in both human and veterinary medicine. Prolonged treatment with dexamethasone can lead to serious metabolic side effects such as insulin resistance and diabetes. In this study, the morphological, immunohistochemical, and ultrastructural changes in the rat pancreatic islets were investigated after dexamethasone treatment (2 mg/kg, intraperitoneally for 12 days). The results showed that the volume density, mean diameter and profile area of islets were significantly increased in dexamethasone-treated animals. The volume density, profile area and mass of B-cells increased, whereas the volume density of A-and D-cells decreased, as did the number of A-cells per mm 2 of islet. Mild insulin immunopositivity of the centrally located B-cells together with altered ultrastructural features indicated their loss of function. The results of the present study suggest adverse effects of dexamethasone on pancreatic endocrine function that may ultimately seriously affect glucose homeostasis.
Funder
Ministry of Education, Science and Technological Development of the Republic of Serbia
Publisher
Centre for Evaluation in Education and Science (CEON/CEES)
Reference57 articles.
1. AKTER, R., CAO, P., NOOR, H., RIDGWAY, Z., TU, L-H., WANG, H., WONG, G.A., ZHANG, X., ABEDINI, A., SCHMIDT, A.M., RALEIGH, P.D. (2016): Islet amyloid polypeptide: 190 structure, function, and pathophysiology. Journal of Diabetes Research 2016: 2798269. doi: 10.1155/2016/2798269; 2. ALANENTALO, T., HÖRNBLAD, A., MAYANS, S., KARIN NILSSON, A., SHARPE, J., LAREFALK, A., AHLGREN, U., HOLMBERG, D. (2010): Quantification and threedimensional imaging of the insulitis-induced destruction of beta-cells in murine type 1 diabetes. Diabetes 59 (7): 1756-1764. doi: 10.2337/db09-1400; 3. ARTH, G.E., GLEN, E., JOHNSTON, D.B.R., FRIED, J., SPOONCER, W.W., HOFF, D.R., SARETT, L.H. (1958): 16-methylated steroids. I. 16a-methylated analogs of cortisone, a new group of anti-inflammatory steroids. Journal of the American Chemical Society 80 (12): 3160-3161. doi: 10.1021/ja01545a061; 4. BAETENS, D., STEFAN, Y., RAVAZZOLA, M., MALAISSE-LAGAE, F., COLEMAN, D.L., ORCI, L. (1978): Alteration of islet cell populations in spontaneously diabetic mice. Diabetes 27: 1-7. doi: 10.2337/diab.27.1.1; 5. BARBERA, M., FIERABRACCI, V., NOVELLI, M., BOMBARA, M., MASIELLO, P., BERGAMINI, E., DE TATA, V. (2001): Dexamethasone-induced insulin resistance and pancreatic adaptive response in aging rats are not modified by oral vanadyl sulfate treatment. The European Journal of Endocrinology 145 (6): 799-806. doi: 10.1530/eje.0.1450799;
|
|