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Is tissue augmentation a reality in biosurgery? An experimental study of endothelial cell invasion into tissue filler
Tomaž Velnar, Vladimir Smrkolj, Marjan Rupnik, Lidija Gradišnik, 2013, izvirni znanstveni članek

Opis: New therapeutic approaches for wound treatment are evolving. Non healing wounds in oncology and after trauma may be cured by a novel technique of tissue augmentation with soft tissue fillers. The principle resides in filling the wound with collagen filler in order to seal the defect and promote healing. Successful angiogenesis forms the basis of tissue filler survival and determines the outcome of the healing process. During this study, basic data about endothelial cell invasion into collagen-made substratum was collected that could be used for neoangiogenesis studies in tissue augmentation techniques for large wound defect treatment. In the in vitro assay, the human umbilical vein endothelial cells (HUVEC) grow into a three-dimensional framework of collagenous tissue fillers, forming the basic step for angiogenesis. After heparins were used as chemotactic agents, a typical bell-shaped relationship between chemotaxis and agent concentrations was found. Significant cell infiltration was present in the assays with chemotactic agents. These observations support the potential for tissue augmentation with soft tissue fillers that could be used in acute and chronic non healing traumatic and oncology wounds after extensive surgical resections and radiotherapy.
Ključne besede: angiogenesis, cell invasion, tissue augmentation, tissue filler, wound healing
Objavljeno: 10.07.2015; Ogledov: 610; Prenosov: 61
URL Povezava na celotno besedilo

Biomaterials and host versus graft response
Tomaž Velnar, Gorazd Bunc, Robert Klobucar, Lidija Gradišnik, 2016, pregledni znanstveni članek

Opis: Biomaterials and biotechnology are increasing becoming an important area in modern medicine. The main aim in this area is the development of materials, which are biocompatible to normal tissue. Tissue-implant interactions with molecular, biological and cellular characteristics at the implant-tissue interface are important for the use and development of implants. Implantation may cause an inflammatory and immune response in tissue, foreign body reaction, systemic toxicity and imminent infection. Tissue-implant interactions determine the implant life-period. The aims of the study are to consider the biological response to implants. Biomaterials and host reactions to implants and their mechanisms are also briefly discussed.
Ključne besede: host versus graft disease, GVHD, biomaterial, wound healing, transplant, tissue, prosthetic, implants, biological response, complications
Objavljeno: 03.08.2017; Ogledov: 370; Prenosov: 50
.pdf Celotno besedilo (815,30 KB)
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