Regeneration of lingual musculature in rats using myoblasts over porcine bladder acellular matrix.

Abstract

To use tissue engineering muscle repair (TEMR) for regenerating the lingual musculature of hemiglossectomized rats using neonatal myoblasts (NM) on porcine acellular urinary bladder matrix (AUBM). The study used 80 male rats. A volumetric muscle loss (VML) injury was created on the left side of the tongue. The rats were randomized into four groups: Group 1 (AUBM+myoblasts); Group 2 (AUBM); Group 3 (myoblasts); and Group 4 (control). NM were obtained from neonatal rats. The animals were weighed on day 0 and just before euthanasia. Five rats in each group were euthanized at days 2, 14, 28, and 42; the tongues were prepared for morphometric analysis, postoperative left hemitongue weight, and immunohistochemical analysis (desmin, CD-31, and anti-neurofilament). The weight gain from greatest to least was as follows: AUBM+myoblasts>myoblasts>AUBM>control. The tongue dorsum occupied by VML, and difference in mg between control side and intervened side from least to great was as follows: AUBM+myoblasts<myoblasts<AUBM<control. The order from highest to lowest antibody positivity was as follows: AUBM+myoblasts>myoblasts>AUBM>control. The use of porcine AUBM and NM for the regeneration of lingual musculature was found to be an effective TEMR treatment for repairing tongue VML injury.