[Tissue regeneration strategies: cells, biochemical inductors, bionanomaterials and bioconstructions. Clinical and surgical achievements].

Regenerative medicine is a medical multidisciplinary area with the aim of morphologic and functional restoration of tissues or organs in order to re-establish normal function. The main bases of regenerative medicine are the use of autologous stem or progenitor cells and the ex vivo construction of physical-mechanical tissue structuring organization, which with stem cells may form bioartificial organs. Another eventual strategy is in vivo stem or progenitor cell stimulation for proliferation. Tissue engineering entirely combines the use of cells, biochemical and physicochemical factors, nanomaterials and bioengineering methods to improve or replace biological functions of tissues and organs. The progressive understanding of the proliferation and differentiation of the process of stem cells and their in vitro manipulation has been the launching platform for the field of regenerative medicine. In this review we describe the main strategies used for regenerative medicine in tissue regeneration along with the main obtained clinicalsurgical benefits.