Differing roles of the calcitonin gene-related peptide (CGRP) and amylin receptors in migraine-related light aversion and gastrointestinal dysfunction in mice.

This research paper focuses on the role of two receptors in migraine symptoms. One receptor is calcitonin gene-related peptide (CGRP), which is important in migraine. The other is the amylin receptor (AMY1), which CGRP can also activate. Researchers studied how these receptors affect light aversion and gastrointestinal issues in mice. They used light aversion to represent photophobia and observed diarrhoea as a sign of gastrointestinal dysfunction. The study involved different mouse strains, including CD1 and C57BL/6J. Researchers administered CGRP and amylin to trigger symptoms, while also using specific antagonists to block their effects. They found that both CGRP and amylin caused light aversion and diarrhoea. Interestingly, blocking CGRP reduced light aversion, suggesting that CGRP plays a key role. The findings indicate that both receptors may contribute to migraine symptoms, which could inform future treatments. Clinical relevance: This research highlights the importance of CGRP and amylin receptors in migraine symptoms, suggesting new avenues for effective migraine treatments.