Abstract:
The present teachings provide new compositions comprising polycations and polycations, and the preparation and use of these new compositions. In one aspect, the new compositions are complex coacervates. The compositions described herein can have several desired properties, including, low interfacial tension in water, adjustable cohesive strength, antimicrobial activity, suitability for dissolution at or near physiological pH, biocompatiblility, and/or biodegradability. The compositions can have the ability of promoting cell attachment, cell adhesion, cell migration, cell differentiation, and/or morphogenesis. Thus, in various embodiments, the complex coacervates can be used in water-based applications, for example, in the body.
Abstract:
Described is an implantable medical material comprising a malleable, cohesive, shape-retaining putty including mineral particles, insoluble collagen fibers and soluble collagen. The medical material can be used in conjunction with biologically active factors such as osteogenic proteins to treat bone or other tissue defects in patients.
Abstract:
Described is a medically useful article comprising a three-dimensional body including one or more implantable substances, wherein the body defines one or more reservoirs for receiving amounts of a biocompatible wetting liquid. In certain embodiments the body is disruptable upon wetting with the biocompatible liquid to form a conformable implantable material such as a putty, paste or more flowable wetted implant material. Also described are methods for manufacturing such medical materials, and methods for using such medical materials to treat patients.
Abstract:
Biocompatible phase invertible proteinaceous compositions and methods for making and using the same are provided. Phase invertible compositions in accordance with the invention are prepared by combining a liquid proteinaceous substrate and a liquid crosslinking composition, where the liquid crosslinking composition includes a macromolecular crosslinking agent. Also provided are kits for use in preparing the subject compositions. The subject compositions, kits and systems find use in a variety of different applications.
Abstract:
A method of crosslinking a protein or peptide for use as a biomaterial, the method comprising the step of irradiating a photoactivatable metal-ligand complex and an electron acceptor in the presence of the protein or peptide, thereby initiating a crosslinking reaction to form a 3-dimensional matrix of the biomaterial.
Abstract:
Described is an implantable medical material comprising a malleable, cohesive, shape-retaining putty including mineral particles, insoluble collagen fibers and soluble collagen. The medical material can be used in conjunction with biologically active factors such as osteogenic proteins to treat bone or other tissue defects in patients.
Abstract:
A method for cross-linking albumin for use as a sealant or glue for a biological system, for example to induce hemostasis and/or prevent leakage of any other fluid from a biological tube or tissue, such as lymph for example. The cross-linked albumin may optionally and preferably be applied as part of a bandage for example. In other embodiments, the present invention provides a method of enzymatically cross-linking globular proteins, by altering the structure of the protein to improve the accessibility of the protein to the cross-linking enzyme.
Abstract:
Biocompatible phase invertable proteinaceous compositions and methods for making and using the same are provided. The subject phase invertable compositions are prepared by combining a proteinaceous substrate and a cross-linker. The proteinaceous substrate includes one or more proteins and an adhesion modifier, and may also include one or more of: a plasticizer, a carbohydrate, or other modification agent. In certain embodiments, the cross-linker is a heat-treated dialdehyde, e.g., heat-treated glutaraldehyde. Also provided are kits for use in preparing the subject compositions. The subject compositions, kits and systems find use in a variety of different applications.
Abstract:
Described is a medically useful article comprising a three-dimensional body including one or more implantable substances, wherein the body defines one or more reservoirs for receiving amounts of a biocompatible wetting liquid. In certain embodiments the body is disruptable upon wetting with the biocompatible liquid to form a conformable implantable material such as a putty, paste or more flowable wetted implant material. Also described are methods for manufacturing such medical materials, and methods for using such medical materials to treat patients.
Abstract:
An open implant, and a method for preparing the implant, constituted of an osteogenic composition with at least one osteogenic growth factor, one soluble salt of a cation at least divalent, and one organic support. The organic support has no demineralized bone matrix. In one embodiment, the implant is in the form of a lyophilizate.