ReviewThe journal of physiological sciences : JPS2024
Influence of age on nicotinic cholinergic regulation of blood flow in rat's olfactory bulb and neocortex.
Review in The journal of physiological sciences : JPS, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 2 citations in OpenAlex.
- A Narrative Review on the Role of Microbiota and Microglia in Premotor Symptoms of Parkinson's Disease.Neurotoxicity research · 2025Review
- Cerebral Blood Flow Responses to Trigeminal Olfactory Stimulation and Their Nicotinic Cholinergic Regulation in Anesthetized Rats.The European journal of neuroscience · 2025Article
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2 authors at 1 institution in 1 country.
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Abstract
The olfactory bulb receives cholinergic basal forebrain inputs as does the neocortex. With a focus on nicotinic acetylcholine receptors (nAChRs), this review article provides an overview and discussion of the following findings: (1) the nAChRs-mediated regulation of regional blood flow in the neocortex and olfactory bulb, (2) the nAChR subtypes that mediate their responses, and (3) their activity in old rats. The activation of the α4β2-like subtype of nAChRs produces vasodilation in the neocortex, and potentiates olfactory bulb vasodilation induced by olfactory stimulation. The nAChR activity producing neocortical vasodilation was similarly maintained in 2-year-old rats as in adult rats, but was clearly reduced in 3-year-old rats. In contrast, nAChR activity in the olfactory bulb was reduced already in 2-year-old rats. Thus, age-related impairment of α4β2-like nAChR function may occur earlier in the olfactory bulb than in the neocortex. Given the findings, the vasodilation induced by α4β2-like nAChR activation may be beneficial for neuroprotection in the neocortex and the olfactory bulb.
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