NMDA receptor is involved in neuroinflammation in intracerebroventricular colchicine-injected rats

Journal of Immunotoxicology
Susmita SilRupsa Ghosh

Abstract

The neurodegeneration in intracerebroventricular (icv) colchicine injected (ICIR) rats is linked with neuroinflammation. Glutamate excitotoxicity through NMDA receptors is involved with the neuroinflammation in some animal models of Alzheimer Disease (AD), but it has not been explored in ICIR rats. The aim of this study was to investigate the role of NMDA receptors (by blocking it's activity with memantine) in colchicine-induced neuroinflammation and neurodegeneration and impacts on peripheral immune parameters in ICIR rats. Levels of inflammatory markers (IL-1β, TNFα, ROS, nitrite) in the hippocampus and serum, histopathology of the hippocampus and select peripheral immune parameters were measured 14 and 21-days after icv colchicine injection in rats. These parameters were also measured in rats that received daily per os administration of memantine (20 mg/kg) in both study durations. Neuroinflammation in the hippocampus of ICIR rats was associated with neurodegeneration (chromatolysis, plaque formation), along with changes in inflammatory markers in the serum and alterations in peripheral immune parameters (phagocytic activity of WBC and splenic PMN, cytotoxic activity/leukocyte adhesion inhibition by splenic MNC). Administrat...Continue Reading

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Sep 14, 2018·Frontiers in Molecular Neuroscience·Md JakariaDong-Kug Choi
Jul 18, 2021·Reproductive Toxicology·Seon Mi ParkEui-Bae Jeung

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