Exposure to manganese during juvenile development increases microglial activation in the hippocampus following systemic infection with A/California/04/2009 Influenza A H1N1 virus.

Publication/Presentation Date

1-1-2026

Abstract

Up to 80% of patients with Parkinson's Disease (PD) develop dementia within 20 years of diagnosis. Although the etiology of PD and related neurodegenerative disorders is poorly understood, risk factors including environmental toxicants and viral infections are linked to disease onset and progression. Exposure to high doses of the essential element, manganese (Mn), causes neurotoxicity associated with parkinsonian symptoms and cognitive impairment in humans. Additionally, epidemiologic studies indicate that viral infections increase risk of developing PD. Previously, our lab demonstrated that mice exposed to Mn during juvenile development showed greater neuroinflammatory changes in microglia within the substantia nigra following systemic infection with H1N1 influenza virus (California/04/09 influenza A) than mice infected without prior exposure to Mn. In the present study, this murine dual-hit model was employed to investigate how juvenile Mn exposure alters H1N1-induced neuropathology and glial morphology in the hippocampus. Mice were exposed to Mn in drinking water from post-natal day 21-51 and then intranasally infected with 10

Volume

8

First Page

1789730

Last Page

1789730

ISSN

2673-3080

Disciplines

Business Administration, Management, and Operations | Health and Medical Administration | Management Sciences and Quantitative Methods

PubMedID

41993870

Department(s)

Administration and Leadership

Document Type

Article

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