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Effects of autonomic denervations on the rhythms in axial length and choroidal thickness in chicks
- Source :
- Journal of Comparative Physiology A. 205:139-149
- Publication Year :
- 2019
- Publisher :
- Springer Science and Business Media LLC, 2019.
-
Abstract
- In chicks, axial length and choroidal thickness undergo circadian oscillations. The choroid is innervated by both branches of the autonomic nervous system, but their contribution(s) to these rhythms is unknown. We used two combination lesions to test this. For parasympathectomy, nerve VII was sectioned presynaptic to the pterygopalatine ganglia, and the ciliary post-ganglionics were cut (double lesion; n = 8). Triple lesions excised the sympathetic superior cervical ganglion as well (n = 8). Sham surgery was done in controls (n = 7). 8–14 days later, axial dimensions were measured with ultrasonography at 4-h intervals over 24 h. Rhythm parameters were assessed using a “best fit” function, and growth rates measured. Both types of lesions resulted in ultradian (> 1 cycle/24 h) rhythms in choroidal thickness and axial length, and increased vitreous chamber growth (Exp-fellow: double: 69 µm; triple: 104 µm; p
- Subjects :
- Superior cervical ganglion
Time Factors
Physiology
030310 physiology
Superior Cervical Ganglion
Article
Lesion
03 medical and health sciences
Behavioral Neuroscience
0302 clinical medicine
Autonomic Denervation
Myopia
medicine
Animals
Circadian rhythm
Vision, Ocular
Ecology, Evolution, Behavior and Systematics
Ultradian rhythm
0303 health sciences
Choroid
business.industry
Ultradian Rhythm
Ciliary ganglion
Ganglia, Parasympathetic
Anatomy
Axial Length, Eye
Autonomic nervous system
medicine.anatomical_structure
Animals, Newborn
Vitreous chamber
Animal Science and Zoology
sense organs
medicine.symptom
business
Chickens
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 14321351 and 03407594
- Volume :
- 205
- Database :
- OpenAIRE
- Journal :
- Journal of Comparative Physiology A
- Accession number :
- edsair.doi.dedup.....061314f09c4e96ec129b557bdb2b45c1