Insulin formulations for rapid uptake
First Claim
1. A clear insulin solution having a pH of between greater than 7.0 and 7.6, consisting of insulin, one or more zinc chelators one or more dissolution agents and one or more excipients,wherein the insulin comprises dissociated insulin monomers produced by chelation of the zinc in insulin hexamers which are not soluble at a pH of between greater than 7.0 and 7.6,the dissociated insulin monomers have bound thereto charge masking agents which stabilize the dissociated insulin monomers,wherein the solution is prepared by raising the pH of an insulin solution from about pH 4.0 to a pH between a pH greater than 7.0 and a pH about 7.6, andwherein the insulin has an enhanced rate of uptake and transport through epithelial cells relative to the solution without the zinc chelator and dissolution agent.
3 Assignments
0 Petitions
Accused Products
Abstract
Injectable insulin formulations with improved stability and rapid onset of action are described herein. The formulations may be for subcutaneous, intradermal or intramuscular administration. In the preferred embodiment, the formulations are administered via subcutaneous injection. The formulations contain insulin in combination with a chelator and dissolution agent, and optionally additional excipients. In the preferred embodiment, the formulation contains human insulin, a zinc chelator such as EDTA and a dissolution agent such as citric acid or sodium citrate. These formulations are rapidly absorbed into the blood stream when administered by subcutaneous injection. In the preferred embodiment, the insulin is provided as a clear liquid, neutral pH, in a multi-use sterile vial. In an alternative embodiment, the insulin is provided as a powder in a sterile vial. This is mixed with a diluent containing a pharmaceutically acceptable carrier, such as water, a zinc chelator such as EDTA and a dissolution agent such as citric acid shortly before or at the time of administration. In another embodiment, the insulin is stored as a frozen mixture, ready for use upon thawing.
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Citations
20 Claims
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1. A clear insulin solution having a pH of between greater than 7.0 and 7.6, consisting of insulin, one or more zinc chelators one or more dissolution agents and one or more excipients,
wherein the insulin comprises dissociated insulin monomers produced by chelation of the zinc in insulin hexamers which are not soluble at a pH of between greater than 7.0 and 7.6, the dissociated insulin monomers have bound thereto charge masking agents which stabilize the dissociated insulin monomers, wherein the solution is prepared by raising the pH of an insulin solution from about pH 4.0 to a pH between a pH greater than 7.0 and a pH about 7.6, and wherein the insulin has an enhanced rate of uptake and transport through epithelial cells relative to the solution without the zinc chelator and dissolution agent.
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12. A method of treating a diabetic individual comprising
injecting an effective amount of a clear insulin solution having a pH of between greater than 7.0 and 7.6, consisting of insulin, a one or more zinc chelators, one or more dissolution agents and one or more excipients, wherein the insulin comprises dissociated insulin monomers produced by chelation of the zinc in insulin hexamers which are not soluble at a pH of between greater than 7.0 and 7.6 by a zinc chelator, the dissociated insulin monomers have bound thereto charge masking agents which stabilize the dissociated insulin monomers, wherein the solution is prepared by raising the pH of an insulin solution from about pH 4.0 to a pH between a pH greater than 7.0 and a pH about 7.6, and wherein the insulin has an enhanced rate of uptake and transport through epithelial cells relative to the solution without the zinc chelator and dissolution agent.
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20. A clear insulin solution having a pH of between a pH greater than 7 and a pH of 7.6, wherein the solution consists of insulin, zinc chelator, dissolution agent and one or more excipients, wherein the solution is prepared by raising the pH of an insulin solution from about pH 4.0 to a pH of between a pH greater than 7.0 and a pH of 7.6.
Specification