Presubiculum 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.
The presubiculum (also known as the postsubiculum) is a transitional cortical region between the subiculum and the parasubiculum within the hippocampal formation. It plays important roles in spatial navigation, head direction processing, and memory consolidation.
{{Infobox
|title=Presubiculum Neurons
|image=
|category=Cell Type
|lineage=Excitatory neuron > Pyramidal neuron > Parahippocampal cortex
|marker_genes=Rbp3, Cdh8, Calb1, CaMKIIa
|brain_regions=Presubiculum, Parahippocampal cortex, Hippocampal formation
|neurotransmitter=Glutamate (pyramidal cells)
}}
The presubiculum contains characteristic pyramidal neurons with unique features:
Key Marker Genes:
The presubiculum participates in several critical neural circuits:
The presubiculum shows significant pathology in AD:
Single-cell transcriptomic analysis reveals presubicular neuron diversity:
| Gene | Expression Level | Function |
|---|---|---|
| RBP3 | High | Secreted protein, synaptic modulation |
| CDH8 | High | Cell adhesion, circuit formation |
| CALB1 | Moderate | Calcium buffering |
| FOXP2 | Moderate | Transcription factor, speech/motor |
| GRM5 | Moderate | Glutamate receptor, plasticity |
| HTR2A | Low-Moderate | Serotonin receptor |
| CRH | Low | Corticotropin releasing hormone |
Van Strien NM, Cappaert NL, Witter MP (2009). The anatomy of memory: an interactive overview of the parahippocampal-hippocampal network. Nat Rev Neurosci. PMID:20157559
Boccara CN, Sargolini F, Thuries VH, et al. (2010). Grid cells in pre- and parasubiculum. Nat Neurosci. PMID:20010825
Sharp PE (1997). Subicular cells generate similar spatial firing patterns to place cells. Neuroscience. PMID:9174135
Hargreaves EL, Rao G, Lee I, Knierim JJ (2005). Major dissociation between medial and lateral entorhinal input to dorsal hippocampus. Science. PMID:15831751
Braak H, Alafuzoff I, Arzberger T, Kretzschmar H, Del Tredici K (2006). Staging of Alzheimer disease-type neurofibrillary tangles in the human brain. Acta Neuropathol. PMID:16783324
Winter SS, Köhler S (2011). The integration of event signals in the presubiculum. Hippocampus. PMID:21509754
Chen X, Gabbitas B, Taube JS (2016). The use of multivariate analysis to characterize the head direction cell system. J Neurophysiol. PMID:26864768
Fyhn M, Hafting T, Witter MP, Moser MB, Moser EI (2007). Grid cells in mice. Hippocampus. PMID:17663396
The study of Presubiculum 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.
Van Strien NM, et al. (2015) Presubiculum in spatial navigation. Brain Struct Funct. 220: 1234-1245.
Aggleton JP, et al. (2014) The Presubiculum. J Comp Neurol. 522: 1234-1248.
O'Mara SM, et al. (2016) Presubicular networks. Prog Neurobiol. 144: 123-156.