摘要:
The invention provides a composition conditioned for the remodeling, restoration, repair, or replacement of tissue within a host. The composition is conditioned by culturing cells on the matrix and/or by exposing the cultured cells or matrix to one or more stressors.
摘要:
A composition includes at least one biologically active agent covalently attached to a first polymerizing molecule that is adapted to undergo a free radical polymerization. The first polymerizing molecule retains the ability to undergo free radical polymerization after attachment of the bioactive agent thereto. The first polymerizing molecule is preferably biocompatible. The polymerizing molecule can, for example. be dihydroxyphenyl-L-alanine (DOPA) or tyrosine. The composition can also include a second component synthesized by reacting at least one core molecule having a plurality of reactive hydrogen groups with at least one multi-isocyanate functional molecule to create a conjugate including terminal isocyanate groups. The conjugate molecule is reacted with a second polymerizing molecule that is adapted to undergo a free radical polymerization. The second polymerizing molecule includes a reactive hydrogen to react with the isocyanate groups of the conjugate. The second polymerizing molecule retains the ability to undergo the free radical polymerization after reaction with the conjugate. In several embodiments, the first polymerizing molecule and the second polymerizing molecule are the same and dihydroxyphenyl-L-alanine (DOPA) or tyrosine.
摘要:
The present invention provides a devitalized mammalian parenchymatous tissue composition which includes an interstitial structure which can serve as a scaffold for tissue repair or regeneration. The devitalized mammalian parenchymatous tissue composition can further include the basement membrane of the tissue.
摘要:
The invention provides a composition conditioned for the remodeling, restoration, repair, or replacement of tissue within a host. The composition is conditioned by culturing cells on the matrix and/or by exposing the cultured cells or matrix to one or more stressors.
摘要:
The present invention provides a devitalized mammalian parenchymatous tissue composition which includes an interstitial structure which can serve as a scaffold for tissue repair or regeneration. The devitalized mammalian parenchymatous tissue composition can further include the basement membrane of the tissue.
摘要:
A tissue graft composition comprising stomach submucosal tissue delaminated from both the luminal portion of the tunica mucosa and the smooth muscle layers of the muscularis externa of a stomach of a warm blooded vertebrate is described. The graft composition can be or implanted into a host to replace or support damaged or diseased tissues.
摘要:
The use of submucosal tissue of a warm blooded vertebrate to manufacture a tissue graft composition that induces the formation of endogenous cardiac tissues in vivo upon contact of the cardiac tissues with the manufactured composition.
摘要:
Multi-laminar tissue graft constructs, pseudoisotropic graft constructs and a method of preparing such constructs are described. Multi-laminar tissue graft constructs are prepared by fusing partially overlapped strips of submucosa tissue into a unitary graft construct by compressing the tissue under dehydrating conditions. Pseudoisotropic tissue graft constructs are prepared by overlapping a first strip of submucosa tissue with at least two strips of submucosa tissue orientated so that the longitudinal axis of each strip formts an angle of about 180.degree./N with the longitudinal axes of at least two other strips of submucosal tissue.
摘要:
A method for repairing damaged or diseased bone is described. The method comprises the step of implanting into the damaged or diseased region a bone graft composition in powder form, the composition comprising the tunica submucosa delaminated from the tunica muscularis and at least the luminal portion of the tunica mucosa of a segment of vertebrate intestine.
摘要:
A fluidized, injectable tissue graft composition is described. The composition comprises comminuted intestinal submucosa or protease-digested intestinal submucosa. Methods for the preparation and use of injectable tissue graft compositions are described. In preferred embodiments the tissue graft material is prepared from the intestinal submucosa comprising the tunica submucosa, the muscularis mucosa and the stratum compactum of a segment of intestinal tissue of a warm-blooded vertebrate. Effective amounts of the fluidized graft compositions can be injected to promote repair tissue defects by inducing formation of endogenous tissues.