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Gene Review

RGMA  -  repulsive guidance molecule family member a

Homo sapiens

Synonyms: RGM, RGM domain family member A, RGMa, Repulsive guidance molecule A
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Disease relevance of RGMA

  • OBJECTIVE: To analyze the clinical features and family history of patients with idiopathic generalized epilepsy (IGE), with pure grand mal (GM), divided into epilepsies with GM occurring exclusively on awakening (GMA) and random GM (RGM) [1].

Psychiatry related information on RGMA

  • Seizure-provoking factors, especially sleep deprivation, were significantly (P=0.001) more common in patients with GMA (52/68, 77%) than in the group with RGM (13/30, 43%) [1].

High impact information on RGMA

  • Following central nervous system injury, RGM, a novel, potent axonal growth inhibitor, is present in axonal growth impediments: the mature myelin, choroid plexus, and components of the developing scar [2].
  • RESULTS: In normal brains, RGM expression was detected on the perikarya of some neurons, choroid plexus, smooth muscle and endothelial cells, oligodendrocytes, and myelinated white matter fibers [2].
  • During the first week after insult, RGM expression remained confined to neurons, smooth muscle and endothelial cells, and leukocytes infiltrating the lesion [2].
  • Thereafter, with maturation of the lesion, we observed RGM expression by components of the developing scar tissue, such as fibroblastoid cells, reactive astrocytes, and a pronounced extracellular RGM deposition resembling neo-laminae [2].
  • Reactive gaseous mercury (RGM, Hg(2+)) is emitted at a rate of 0.34-3.68 g h(-1) [3].

Biological context of RGMA

  • METHODS: Desflurane in concentrations of 0% to 3% in 0.5% increments and 3% to 12% in 1% increments in 2 L.min-1 oxygen was delivered simultaneously to an Ohmeda 5250 RGM desflurane channel, an Ohmeda 5250 RGM isoflurane channel, and a Datex Capnomac Ultima isoflurane channel at room temperature and atmospheric pressure [4].

Anatomical context of RGMA

  • However, the role of RGM in adult central nervous system lesions remains to be clarified [2].
  • In the dentate gyrus, RGM immunostaining was confined to the inner molecular layer, whereas the outer molecular layers targeted by entorhinal fibers remained free [5].

Associations of RGMA with chemical compounds

  • By comparing the readings from the desflurane channel of Ohmeda RGM and the isoflurane channels from Ohmeda RGM and Datex Capnomac Ultima respectively, the linear regression relationship and the slope of the fitted line (conversion factor) between two channels were obtained [4].


  1. Idiopathic generalized epilepsies with pure grand mal: clinical data and genetics. Unterberger, I., Trinka, E., Luef, G., Bauer, G. Epilepsy Res. (2001) [Pubmed]
  2. Central nervous system injury-induced repulsive guidance molecule expression in the adult human brain. Schwab, J.M., Monnier, P.P., Schluesener, H.J., Conrad, S., Beschorner, R., Chen, L., Meyermann, R., Mueller, B.K. Arch. Neurol. (2005) [Pubmed]
  3. Speciation and mass-balance of mercury from pulverized coal fired power plants burning western Canadian subbituminous coals. Goodarzi, F. Journal of environmental monitoring : JEM. (2004) [Pubmed]
  4. Estimation of desflurane concentration using isoflurane channel in optical infrared analyzer. Tsui, B.C., Jolly, D.T., Clanachan, A.S. Canadian journal of anaesthesia = Journal canadien d'anesthésie. (1999) [Pubmed]
  5. The repulsive guidance molecule RGMa is involved in the formation of afferent connections in the dentate gyrus. Brinks, H., Conrad, S., Vogt, J., Oldekamp, J., Sierra, A., Deitinghoff, L., Bechmann, I., Alvarez-Bolado, G., Heimrich, B., Monnier, P.P., Mueller, B.K., Skutella, T. J. Neurosci. (2004) [Pubmed]
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