ArticleBrain structure & function2019
Modulation of olfactory-driven behavior by metabolic signals: role of the piriform cortex.
Article in Brain structure & function, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 31 citations in OpenAlex.
- Brief high-fat diet exposure temporally reshapes affective behavior and prefrontal cortex function.bioRxiv : the preprint server for biology · 2026Article
- Olfactory dysfunction in obesity and type 2 diabetes: mechanistic insights from preclinical models.Diabetologia · 2026Review
- Effects of Kv1.3 knockout on pyramidal neuron excitability and synaptic plasticity in piriform cortex of mice.Acta pharmacologica Sinica · 2024Article
- Modulating the Excitability of Olfactory Output Neurons Affects Whole-Body Metabolism.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022Article
- Alteration of Neural Pathways and Its Implications in Alzheimer's Disease.Biomedicines · 2022Review
- GFP-Margatoxin, a Genetically Encoded Fluorescent Ligand to Probe Affinity of Kv1.3 Channel Blockers.International journal of molecular sciences · 2022Article
- The role of the piriform cortex in temporal lobe epilepsy: A current literature review.Frontiers in neurology · 2022Review
- Olfactory bulb-targeted quantum dot (QD) bioconjugate and Kv1.3 blocking peptide improve metabolic health in obese male mice.Journal of neurochemistry · 2021Article
- Article
- Long-term obesogenic diet and targeted deletion of potassium channel KPhysiological reports · 2019Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
Abstract
Olfaction is one of the major sensory modalities that regulates food consumption and is in turn regulated by the feeding state. Given that the olfactory bulb has been shown to be a metabolic sensor, we explored whether the anterior piriform cortex (aPCtx)-a higher olfactory cortical processing area-had the same capacity. Using immunocytochemical approaches, we report the localization of Kv1.3 channel, glucose transporter type 4, and the insulin receptor in the lateral olfactory tract and Layers II and III of the aPCtx. In current-clamped superficial pyramidal (SP) cells, we report the presence of two populations of SP cells: glucose responsive and non-glucose responsive. Using varied glucose concentrations and a glycolysis inhibitor, we found that insulin modulation of the instantaneous and spike firing frequency are both glucose dependent and require glucose metabolism. Using a plethysmograph to record sniffing frequency, rats microinjected with insulin failed to discriminate ratiometric enantiomers; considered a difficult task. Microinjection of glucose prevented discrimination of odorants of different chain-lengths, whereas injection of margatoxin increased the rate of habituation to repeated odor stimulation and enhanced discrimination. These data suggest that metabolic signaling pathways that are present in the aPCtx are capable of neuronal modulation and changing complex olfactory behaviors in higher olfactory centers.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.