Abstract: The present invention relates to a method and associated agents for the inhibition and treatment of protein aging in animals by stimulating the bodies of the animals to increase their recognition and affinity for advanced glycosylation end products. Specifically, the method contemplates the administration of certain agents such as advanced glycosylation endproducts, such endproducts as are bound to the carrier, monokines that stimulate phagocytic cells to increase their activity toward advanced glycosylation endproducts, and mixtures of these materials either alone, or in conjunction with other co-stimulatory agents. Numerous diagnostic and therapeutic applications are defined, and pharmaceutical compositions are also contemplated.

Abstract: The present invention relates to compositions and methods for inhibiting protein aging. Accordingly, a composition is disclosed which comprises an agent or compound capable of inhibiting the formation of advanced glycosylation end products of target proteins by reacting with the carbonyl moiety of the early glycosylation product of such target proteins formed by their initial glycosylation. Suitable agents may contain an active nitrogen-containing group, such as a hydrazine group. Particular agents comprise aminoguanidine, .alpha.-hydrazinohistidine and mixtures thereof. The method comprises contacting the target protein with the composition. Both industrial and therapeutic applications for the invention are envisioned, as food spoilage and animal protein aging can be treThis invention was made in part with government support under Grant Number PHS AM 19655 awarded by the National Institutes of Health. The government has certain rights in the invention.

Abstract: The present invention relates to compositions and methods for inhibiting protein aging. Accordingly, a composition is disclosed which comprises an agent or compound capable of inhibiting the formation of advanced glycosylation end products of target proteins by reacting with the carbonyl moiety of the early glycosylation product of such target proteins formed by their initial glycosylation. Suitable agents may contain an active nitrogen-containing group, such as a hydrazine group. Particular agents comprise aminoguanidine, .alpha.-hydrazinohistidine and mixtures thereof. The method comprises contacting the target protein with the composition. Both industrial and therapeutic applications for the invention are envisioned, as food spoilage and animal protein aging can be treated.

Abstract: The present invention relates to a method and associated agents for the inhibition and treatment of protein aging in animals by stimulating the bodies of the animals to increase their recognition and affinity for advanced glycosylation end products. Specifically, the method contemplates the administration of certain agents such as advanced glycosylation endproducts, such endproducts as are bound to the carrier, monokines that stimulate phagocytic cells to increase their activity toward advanced glycosylation endproducts, and mixtures of these materials either alone, or in conjunction with other co-stimulatory agents. Numerous diagnostic and therapeutic applications are defined, and pharmaceutical compositions are also contemplated.

Abstract: The present invention relates to compositions and methods for inhibiting protein aging. Accordingly, a composition is disclosed which comprises an agent or compound capable of inhibiting the formation of advanced glycosylation end products of target proteins by reacting with the carbonyl moiety of the early glycosylation product of such target proteins formed by their initial glycosylation. Suitable agents may contain an active nitrogen-containing group, such as a hydrazine group, and may further be at least partially derived from amino acids. Particular agents comprise aminoguanidine, .alpha.-hydrazinohistidine and lysine. The method comprises contacting the target protein with the composition. Both industrial and therapeutic applications for the invention are envisioned, as food spoilage and animal protein aging can be treated.

Abstract: A process for sulphation and phosphorylation of a protein or peptide comprising contacting said protein or peptide with sulphuric or phosphoric acid in the presence of a non-aqeuous apolar organic solvent and contacting the resultant solution with a dehydrating agent is disclosed. Non-aggregating insulin products with bioactivity may be prepared by this process.

Abstract: A process for sulphation and phosphorylation of a protein or peptide comprising contacting said protein or peptide with sulphuric or phosphoric acid in the presence of a non-aqueous apolar organic solvent and contacting the resultant solution with a dehydrating agent is disclosed. Non-aggregating insulin products with bioactivity may be prepared by this process.

Abstract: A process and system for controlled delivery of a biologically active substance to an animal body fluid which comprises contacting fluid with a reversible complex of a conjugate (1) and a binding macromolecule (2), wherein the conjugate (1) comprises a biologically active portion which is intended to be proportionately released into a body fluid stream in response to varying concentration levels of a component of the body fluid stream, and a complexing substrate portion which conjugates with the biologically active portion and which is characterized by affinity to the binding macromolecule (2), competitivey or non-competitively with the variable component of the body fluid; thereby causing the component present in the body fluid to complex to the binding macromolecule and thus releasing the conjugate (1) therefrom into the fluid.The process and system are particularly applicable for the glucose-controlled release of insulin and other hypoglycemic agents in the treatment of diabetes.

Abstract: A method of monitoring metabolic control in a diabetes patient comprising measuring the amount of non-enzymatic glycosylated amino acids and peptides in urine of the patient; a method of measurement and a test kit for the measurement are disclosed.

Abstract: A process and system for controlled delivery of a biologically active substance to an animal body fluid which comprises contacting fluid with a reversible complex of a conjugate (1) and a binding macromolecule (2), wherein the conjugate (1) comprises a biologically active portion which is intended to be proportionately released into a body fluid stream in response to varying concentration levels of a component of the body fluid stream, and a complexing substrate portion which conjugates with the biologically active portion and which is characterized by affinity to the binding macromolecule (2), competitively or non-competitively with the variable component of the body fluid; thereby causing the component present in the body fluid to complex to the binding macromolecule and thus releasing the conjugate (1) therefrom into the fluid.The process and system are particularly applicable for the glucose-controlled release of insulin and other hypoglycemic agents in the treatment of diabetes.

Abstract: The present invention relates to a method and associated agents for the inhibition and treatment of protein aging in animals by stimulating the bodies of the animals to increase their recognition and affinity for advanced glycosylation end products. Specifically, the method contemplates the administration of certain agents such as advanced glycosylation endproducts, such endproducts as are bound to the carrier, monokines that stimulate phagocytic cells to increase their activity toward advanced glycosylation endproducts, and mixtures of these materials either alone, or in conjunction with other co-stimulatory agents. Numerous diagnostic and therapeutic applications are defined, and pharmaceutical compositions are also contemplated.