Expression of GABAAα1, GABAB1, and mGluR2 receptors in the lateral geniculate body of male neonates born to diabetic rats

Document Type : Original Article


1 Department of Anatomy and Cell Biology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran

2 Nervous System Stem Cell Research Center, Semnan University of Medical Sciences, Semnan, Iran;Department of Anatomical Sciences, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran

3 Regenerative Medicine, Organ Procurement and transplantation Multidisciplinary Center, Razi Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran

4 Medical Genetic Research Center (MGRC), School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran


Objective(s): Diabetes during gestation is one of the most common pregnancy complications and has adverse effects on offspring, including a negative impact on the offspring’s central nervous system (CNS). Diabetes is a metabolic disease associated with visual impairment. Due to the importance of the lateral geniculate body (LGB) in the visual pathway, the present study examined the effect of maternal diabetes on the expression of gamma-aminobutyric acid (GABAAα1 and GABAB1) and metabotropic Glutamate (mGlu2) receptors in the LGB of male neonates of diabetic rats.
Materials and Methods: Diabetes was induced in female adult rats by a single intraperitoneal dose of streptozotocin (STZ) 65 (mg/kg). In the Insulin-treated diabetic rats, diabetes was controlled by subcutaneous NPH-insulin injection daily. After mating and delivery, male offspring were killed by carbon dioxide gas inhalation at P0, P7, and P14 (postnatal days 0, 7, and 14). The expression of GABAAα1, GABAB1, and mGluR2 in the LGB of male neonates was determined using the immunohistochemistry (IHC) method.
Results: The expression of GABAAα1 and GABAB1 was significantly reduced, whereas the expression of mGluR2 was markedly increased in the diabetic group compared with the control and insulin-treated groups at P0, P7, and P14.
Conclusion: The results of the present study showed that induction of diabetes altered the expression of GABAAα1, GABAB1, and mGluR2 in the LGB of male neonates born to diabetic rats at P0, P7, and P14. Moreover, insulin treatment could reverse these effects of diabetes.


Main Subjects

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