The trigeminal ganglion neurons are responsible for migraine and trigeminal neuralgia so it is important to study the morphology of neurons responsible for nociception. The ratsÂ’ trigeminal ganglion were collected and stained for crystal violet and immunohistochemical localization for GFAP and CGRP to study the morphology of cells responsible for nociception. The pseudo unipolar neurons were classified into small (29 micron) based on their size. The CGRP was localized in cytoplasm on neurons especially in small neurons with dense staining indicating those neurons are responsible for nociception. The GFAP was localized in satellite glial cells surrounding each neuron. Upregulation of GFAP and CGRP can lead to pathological conditions like migraine and trigeminal neuralgia.
Key words: Trigeminal ganglion, Migraine, Neuralgia, immunohistochemical, satellite glial cells
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