Abstract
This research aims to observe and compare the wound healing process of urethral bladder after transurethral holmium laser resection of bladder tumor (HoLRBT) and transurethral resection of bladder tumor (TURBT) and explore the possible mechanism of wound healing and bladder re-epithelialization after HoLRBT. An animal model of canine achieving HoLRBT and TURBT was established. Cystoscopy was performed at different time points (3 days and 1, 2, 3, and 4 weeks) after operation to observe the wound healing and re-epithelialization of bladder epithelium. Bladder mucosa specimens were obtained and histopathological changes of the bladder epithelium were observed under light microscope after HE staining. Immunochemistry was used to determine the cell expression ofCK5, CK14, EGF, EGFR; microRNA expressions of CK5, CK14, EGF, and EGFR were measured by qRT-PCR. The changes of urinary EGF concentration were detected by ELISA. The bladder epithelial wound was repaired and re-epithelialized at 1 week after HoLRBT. At the 4th week, the bladder wound was basically completed and re-epithelialized; repair of bladder epithelial wounds recapitulates the wounds with the proliferation and migration of residual epithelial cells under the wound and ...Continue Reading
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