Application of decellularized tissues in ear regeneration

More than 5 % of people worldwide suffer from hearing disorders. Ototoxic drugs, aging, exposure to loud sounds, rupture, subperichondrial hematoma, perichondritis, burns and frostbite and infections are the main causes of hearing loss, some of which can destroy the cartilage and lead to deformation. On the other hand, disorders of the external ear are diverse and can range from dangerous neoplasms to defects that are not acceptable from a cosmetic standpoint. These issues include injuries, blockages, dermatoses, and infections, and any or all of them may be bothersome to the busy doctor. Using an implant or hearing aid is one of the treatment strategies for deafness. However, these medical devices are not useful for every eligible patient. With the right therapy, many of these issues are not life-threatening and can be treated with confidence in a positive outcome. As medical research and treatment have advanced dramatically in the past ten years, tissue engineering (TE) has emerged as a promising method to regenerate damaged tissue, raising the prospect of a permanent cure for deafness. Decellularization is now seen as a promising development for regenerative medicine, and an increasing number of applications are being found for acellular matrices. Studies on decellularization show that natural scaffolds made from decellularized tissues can serve as a suitable platform while preserving the main components, and the preparation of such scaffolds will be an important part of future bioscience research. It can have wide applications in regenerative medicine and TE. This review intends to give an overview of the status of research and alternative scaffolds in inner and outer ear regenerative medicine from both a preclinical and clinical perspective for ear disorders in order to show how ongoing TE research has the potential to advance and enhance novel disease treatments.