Tissue expander stimulated lengthening of arteries (TESLA) induces early endothelial cell proliferation in a novel rodent model.
BACKGROUND
We examine the mechanism of aortic lengthening in a novel rodent model of tissue expander stimulated lengthening of arteries (TESLA).


METHODS
A rat model of TESLA was examined with a single stretch stimulus applied at the time of tissue expander insertion with evaluation of the aorta at 2, 4 and 7day time points. Measurements as well as histology and proliferation assays were performed and compared to sham controls.


RESULTS
The aortic length was increased at all time points without histologic signs of tissue injury. Nuclear density remained unchanged despite the increase in length suggesting cellular hyperplasia. Cellular proliferation was confirmed in endothelial cell layer by Ki-67 stain.


CONCLUSIONS
Aortic lengthening may be achieved using TESLA. The increase in aortic length can be achieved without tissue injury and results at least partially from cellular hyperplasia. Further studies are required to define the mechanisms involved in the growth of arteries under increased longitudinal stress.
['Potanos|Kristina|K|', 'Fullington|Nora|N|', 'Cauley|Ryan|R|', 'Purcell|Patricia|P|', 'Zurakowski|David|D|', 'Fishman|Steven|S|', 'Vakili|Khashayar|K|', 'Kim|Heung Bae|HB|']
D000293:Adolescent D000328:Adult D000818:Animals D001011:Aorta D001018:Aortic Diseases D049109:Cell Proliferation D002648:Child D002675:Child, Preschool D042783:Endothelial Cells D006801:Humans D008297:Male D023421:Models, Animal D051381:Rats D017207:Rats, Sprague-Dawley D015626:Tissue Expansion D015625:Tissue Expansion Devices D055815:Young Adult
Tissue expander Stretch Stress Artery lengthening Midaortic syndrome Middle aortic syndrome Tension