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Age‐Related Changes in Human Laryngeal Nerves

2007; Wiley; Volume: 136; Issue: 5 Linguagem: Inglês

10.1016/j.otohns.2006.11.054

1097-6817

Romualdo Suzano Louzeiro Tiago, Paulo Pontes, Osíris Camponês do Brasil,

Head and Neck Surgical Oncology

We sought to perform a morphometric analysis of myelinated fibers from laryngeal nerves with the aim of verifying quantitative changes due to the aging process.A 1-cm fragment was collected from the superior laryngeal nerves and recurrent laryngeal nerves from 12 cadavers during autopsy. The sample was divided in two groups: an adult group (aged or =60 years).The total number of myelinated fibers from the superior laryngeal nerves was similar in both groups (adult group = 9017 +/- 1692, elderly group = 7918 +/- 1624; P = 0.79). The adult group had a higher total number of myelinated fibers in the recurrent laryngeal nerves than that of the elderly group (adult group = 3276 +/- 383, elderly group = 2381 +/- 669; P = 0.005), as well as a higher total number of fibers in the laryngeal nerves (both superior and recurrent) than the elderly group (P = 0.02).The adult group has a higher total number of myelinated fibers in the laryngeal nerves than the elderly group.