A new solubilization method of recombinant interferon beta-1b (IFNβ-1b) from the inclusion bodies was developed. This method allows to extract the target protein selectively in the solutions of different alcohols, such as ethanol, propanol and isopropanol. It was shown that the more effective IFNβ-1b solubilization was achieved in the 55% propanol solution. This method allowed to extract the target protein from inclusion bodies around 85-90%, and significantly reduced Escherichia coli content in the solubilizate, in comparison with standard methods.
Anticonvulsant activity and pharmacokinetics of nanoemulsion and unmodified substance of carbamazepine were compared in experiments on mice. Carbamazepine nanoemulsion demonstrated significant anticonvulsant activity and was superior to unmodified substance of carbamazepine against seizures induced by maximum electric shock and picrotoxin. Relative bioavailability of carbamazepine after administration of nanoemulsion was 160% compared to unmodified substance. Carbamazepine nanoemulsion more effectively penetrated through BBB by 1.5 times in comparison with unmodified substance.
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