Dopamine agonist Rotigotine mitigates lipopolysaccharide-induced neuroinflammation and memory impairment in mice

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Gurram, PC
Satarker, S
Nassar, A
Begum, F
Mudgal, J
Arora, D
Nampoothiri, M
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2025
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Abstract

Background: Dopaminergic signaling in the Central Nervous System (CNS) has been observed in the pathophysiology of memory deficits. Rotigotine belongs to a non-ergot-based dopamine receptor agonist possessing anti-inflammatory properties. However, it is uncertain if it has a role in ameliorating cognitive decline. Here, we evaluated the actions of rotigotine on neuroinflammation and memory impairment. Methodology: Rotigotine 1, 3, and 5 mg/kg were administered to mice subcutaneously once a day for fifteen days. Lipopolysaccharide (LPS) 750 µg/kg was administered intraperitoneally for seven days to produce cognitive impairment in mice. Morris water maze and Passive avoidance step-down tests were performed to evaluate memory function. Further, tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and amyloid-beta (Aβ) were estimated by ELISA. The mouse brain was analyzed for acetylcholinesterase (AChE) activity, lipid peroxidation, catalase, and reduced glutathione levels. Results: LPS elevated IL-6, Aβ, TNF-α, and AChE activity, promoted oxidative stress, and caused memory decline in mice. Lower doses of rotigotine 1 and 3 mg/kg significantly reduced neuroinflammation, oxidative stress, and AChE activity, followed by improved cognitive impairment. Conclusion: Our data suggest that rotigotine 1 and 3 mg/kg could reverse the neuroinflammation-associated memory impairment.

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Metabolic Brain Disease

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40

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1

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Clinical sciences

Neurosciences

Biological psychology

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Gurram, PC; Satarker, S; Nassar, A; Begum, F; Mudgal, J; Arora, D; Nampoothiri, M, Dopamine agonist Rotigotine mitigates lipopolysaccharide-induced neuroinflammation and memory impairment in mice, Metabolic Brain Disease, 2025, 40 (1), pp. 23

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