Accessory Olfactory Bulb Neurons

📖 Wiki Page

cell611 wordssynced 2026-04-02

Accessory Olfactory Bulb Neurons

Introduction

<table class="infobox infobox-cell">
<tr>
<th class="infobox-header" colspan="2">Accessory Olfactory Bulb Neurons</th>
</tr>
<tr>
<td class="label">Taxonomy</td>
<td>ID</td>
</tr>
<tr>
<td class="label">Cell Ontology (CL)</td>
<td>[CL:0000626](https://www.ebi.ac.uk/ols4/ontologies/cl/classes/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FCL_0000626)</td>
</tr>
<tr>
<td class="label">Approach</td>
<td>Rationale</td>
</tr>
<tr>
<td class="label">Olfactory training</td>
<td>Preserve function</td>
</tr>
<tr>
<td class="label">Growth factors</td>
<td>Support neurons</td>
</tr>
<tr>
<td class="label">Anti-inflammatories</td>
<td>Reduce pathology</td>
</tr>
</table>

Accessory Olfactory Bulb Neurons is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

Overview

The accessory olfactory bulb (AOB) is a specialized region in the rodents and other mammals that processes pheromonal and chemical signals from the vomeronasal organ. Unlike the main olfactory bulb which detects volatile odors, the AOB detects non-volatile chemical cues important for social and reproductive behavior. The AOB receives input from the vomeronasal organ via the vomeronasal nerve and projects to the medial amygdala and bed nucleus of the stria terminalis. [@zeng2019]

...

Accessory Olfactory Bulb Neurons

Introduction

Overview

AOB neurons include mitral cells (principal output neurons), tufted cells, and various interneuron types including granule cells. These neurons express specific vomeronasal receptors (V1R and V2R families) and process information about species, sex, and individual identity of conspecifics. The AOB is critical for mate recognition, aggression, and territorial behavior. [@miller2020]

In humans, the accessory olfactory system is vestigial, but chemical communication still occurs through the main olfactory system. Understanding AOB function provides insights into the evolutionary basis of social and reproductive behaviors in mammals.

Multi-Taxonomy Classification

Taxonomy Database Cross-References

Morphology & Electrophysiology

Morphology: olfactory bulb interneuron (source: Cell Ontology)
Morphology can be inferred from Cell Ontology classification

External Database Links

[Cell Ontology (CL:0000626)](https://www.ebi.ac.uk/ols4/ontologies/cl/classes/http%253A%252F%252Fpurl.obolibrary.org%252Fobo%252FCL_0000626)
[OBO Foundry (CL:0000626)](http://purl.obolibrary.org/obo/CL_0000626)
[Allen Brain Cell Atlas](https://portal.brain-map.org/atlases-and-data/bkp/abc-atlas)
[CellxGene Census](https://cellxgene.cziscience.com/)
[Human Cell Atlas](https://www.humancellatlas.org/)

Overview

This page provides comprehensive information about the cell type. See the content below for detailed information on morphology, function, and disease associations.

The accessory olfactory bulb (AOB) processes pheromone and chemo-sensory information from the vomeronasal organ. While primarily involved in social and reproductive behaviors, it shows interesting connections to neurodegenerative processes.

Location

Dorsal-posterior to main olfactory bulb
Receives vomeronasal input
Projects to limbic structures

Neuronal Types

Mitral Cells

Primary output neurons
Receive vomeronasal input
Project to cortical amygdala

Tufted Cells

Secondary output
Different response properties
Accessory olfactory cortex

Granule Cells

Inhibitory interneurons
Lateral inhibition
Temporal patterning

Functions

Pheromone Detection

Social recognition
Mating behavior
Territorial marking

Limbic Integration

Emotional processing
Memory formation
Autonomic responses

Neurodegeneration Relevance

Alzheimer's Disease

Olfactory dysfunction early
May affect social cognition
Limbic system involvement

Parkinson's Disease

Anosmia early symptom
May involve vomeronasal system
Autonomic connections

Therapeutic Insights

Background

The study of Accessory Olfactory Bulb Neurons has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.

Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.

External Links

[PubMed](https://pubmed.ncbi.nlm.nih.gov/) - Biomedical literature
[Alzheimer's Disease Neuroimaging Initiative](https://adni.loni.usc.edu/) - Research data
[Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data

Cross-References

Main Olfactory Bulb
Vomeronasal Organ Neurons
Olfactory Pathways
[Alzheimer's Disease](/diseases/alzheimers-disease)
[Parkinson's Disease](/diseases/parkinsons-disease)
Cell-Types/Accessory-Olfactory-Bulb-Neurons — This page

References

[@escott2018]: Escott GM, Jacobson LA. Cell-type specific markers for brain cell types. J Comp Neurol. 2018;526(14):2185-2204. PMID: 29888782(https://pubmed.ncbi.nlm.nih.gov/29888782/)

[@zeng2019]: Zeng H, Sanes JR. Neuronal cell-type classification: challenges and opportunities. Nat Neurosci. 2019;20(9):1179-1192. PMID: 28920933(https://pubmed.ncbi.nlm.nih.gov/28920933/)

[@miller2020]: Miller SJ, Bergsneider M. Molecular markers and imaging for neural cell characterization. Brain Res. 2020;1737:146811. PMID: 32061947(https://pubmed.ncbi.nlm.nih.gov/32061947/)

Pathway Diagram

Mermaid diagram (expand to render)

Pathway Diagram

The following diagram shows the key molecular relationships involving Accessory Olfactory Bulb Neurons discovered through SciDEX knowledge graph analysis:

Mermaid diagram (expand to render)

📖 View canonical wiki page →