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Epigenetic regulation of the shape and position of the auricle in the rat.
- Source :
-
Plastic and reconstructive surgery [Plast Reconstr Surg] 1979 Mar; Vol. 63 (3), pp. 411-7. - Publication Year :
- 1979
-
Abstract
- We hypothesized that epigenetic (non-genomic) factors, related to muscular function, significantly regulate the shape and position of the auricular cartilage. We tested this experimentally by doing unilateral partial and total facial neurectomies, auricular myectomies, and ear rotations with skin excisions in rats. The neurectomies produced muscle atrophy, abolished the horizontal scaphoid ridging, and produced characteristic changes in the auricular shape. The myectomies of extrinsic auricular musculature alone were followed routinely by complete muscle regeneration and no changes in shape. The auricular rotations, with skin excision, produced an antihelix-like complex analogous to the human ear--a configuration that was permanent and was accompanied by muscle relocation. The findings are believed to support our hypothesis.
- Subjects :
- Animals
Dermatologic Surgical Procedures
Ear, External growth & development
Ear, External surgery
Facial Nerve physiology
Facial Nerve surgery
Muscle Development
Muscles innervation
Rats
Skull growth & development
Vagus Nerve physiology
Vagus Nerve surgery
Ear, External anatomy & histology
Skull anatomy & histology
Subjects
Details
- Language :
- English
- ISSN :
- 0032-1052
- Volume :
- 63
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Plastic and reconstructive surgery
- Publication Type :
- Academic Journal
- Accession number :
- 419219
- Full Text :
- https://doi.org/10.1097/00006534-197903000-00023