Martinotti cell
| Martinotti cell | |
|---|---|
| Identifiers | |
| NeuroLex ID | nifext_55 |
| Anatomical terms of neuroanatomy | |
Martinotti cells are small multipolar neurons with short branching dendrites. They are scattered throughout various layers of the cerebral cortex, sending their axons up to the cortical layer I where they form axonal arborization. The arbors transgress multiple columns in layer VI and make contacts with the distal tuft dendrites of pyramidal cells.[1] Martinotti cells express somatostatin and sometimes calbindin, but not parvalbumin or vasoactive intestinal peptide.[2] Furthermore, Martinotti cells in layer V of mouse cortex have been shown to express the nicotinic acetylcholine receptor α2 subunit (Chrna2), and preferably form reciprocal circuits with L5 extratelencephalic pyramidal neurons.[3] They are commonly considered a subset of somatostatin (SST)-expressing interneurons.[4]
Martinotti cells are associated with a cortical dampening mechanism.[5] When the pyramidal neuron, which is the most common type of neuron in the cortex, starts getting overexcited, Martinotti cells start sending inhibitory signals to the surrounding neurons. [6]
Historically, the discovery of Martinotti cells has been mistakenly attributed to Giovanni Martinotti 1888, although it is now accepted that they were actually discovered in 1889 by Carlo Martinotti (1859–1908), a student of Camillo Golgi.[7]
See also
[edit]References
[edit]- ↑ Wang Y, Toledo-Rodriguez M, Gupta A, et al. (November 2004). "Anatomical, physiological and molecular properties of Martinotti cells in the somatosensory cortex of the juvenile rat". J. Physiol. 561 (Pt 1): 65–90. doi:10.1113/jphysiol.2004.073353. PMC 1665344. PMID 15331670.
- ↑ Sugino K, Hempel CM, Miller MN, et al. (January 2006). "Molecular taxonomy of major neuronal classes in the adult mouse forebrain". Nat. Neurosci. 9 (1): 99–107. doi:10.1038/nn1618. PMID 16369481. S2CID 27815855.
- ↑ Hilscher, Markus M.; Leão, Richardson N.; Edwards, Steven J.; Leão, Katarina E.; Kullander, Klas (2017-02-09). "Chrna2-Martinotti Cells Synchronize Layer 5 Type A Pyramidal Cells via Rebound Excitation". PLOS Biology. 15 (2) e2001392. doi:10.1371/journal.pbio.2001392. ISSN 1545-7885. PMC 5300109. PMID 28182735.
- ↑ Gouwens, NW; Sorensen, SA; Baftizadeh, F; et al. (2020-11-12). "Integrated Morphoelectric and Transcriptomic Classification of Cortical GABAergic Cells". Cell. 183 (4): 935–953.e19. doi:10.1016/j.cell.2020.09.057. PMC 7781065. PMID 33186530.
- ↑ Riedemann, T (17 June 2019). "Diversity and Function of Somatostatin-Expressing Interneurons in the Cerebral Cortex". International Journal of Molecular Sciences. 20 (12): 2952. doi:10.3390/ijms20122952. PMC 6627222. PMID 31212931.
- ↑ Silberberg G, Markram H (March 2007). "Disynaptic inhibition between neocortical pyramidal cells mediated by Martinotti cells". Neuron. 53 (5): 735–46. doi:10.1016/j.neuron.2007.02.012. PMID 17329212. S2CID 15624023.
- ↑ Martinotti C (1889). "Contributo allo studio della corteccia cerebrale, ed all'origine centrale dei nervi". Ann. Freniatr. Sci. Affini. 1: 14–381.
External links
[edit]News, press releases
[edit]- Rare cell prevents rampant brain activity - on the discovery of potential dampening influence of Martinotti cells.
- NIF Search - Martinotti Cell via the Neuroscience Information Framework
 | This neuroanatomy article is a stub. You can help Wikipedia by adding missing information. |