Immunobiological barriers to xenotransplantation
نویسندگان
چکیده
منابع مشابه
Immunobiological barriers to xenotransplantation.
Binding of natural anti-pig antibodies in humans and nonhuman primates to carbohydrate antigens expressed on the transplanted pig organ, the most important of which is galactose-α1,3-galactose (Gal), activate the complement cascade, which results in destruction of the graft within minutes or hours, known as hyperacute rejection. Even if antibody is removed from the recipient's blood by plasmaph...
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1. The use of organs from animal donors (xenotransplantation) is a potential solution to the chronic shortage of allogeneic organs and currently the pig is thought to be the most suitable donor for man. However, porcine organs are rejected rapidly by a vascular process called hyperacute rejection which has so far prevented clinical xenotransplantation. Although it is likely that this barrier wi...
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Xenotransplantation may be a solution to overcome the shortage of organs for the treatment of patients with organ failure, but it may be associated with the transmission of porcine microorganisms and the development of xenozoonoses. Whereas most microorganisms may be eliminated by pathogen-free breeding of the donor animals, porcine endogenous retroviruses (PERVs) cannot be eliminated, since th...
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The many studies on the immune mechanisms contributing to xenograft rejection have identified two types of antibodies (Abs) that form barriers to transplantation of xenografts into humans: 1. Natural and induced anti-Gal Abs, and 2. Induced anti-non gal Abs. The formidable barrier of anti-Gal Abs seems to have been removed by the generation of 1,3galactosyltransferase (1,3GT) knockout (KO) pi...
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ژورنال
عنوان ژورنال: International Journal of Surgery
سال: 2015
ISSN: 1743-9191
DOI: 10.1016/j.ijsu.2015.06.068