Stage releasing CsA solid tiny milk agent and tiny milk curing method thereof

Abstract

The invention discloses a stage-releasing-type cyclosporine A solid micro-emulsion preparation and the solidification method of the micro-emulsion. With the containing cyclosporine A serving as the active component, the micro-emulsification technique and the micro-emulsion solidification technique are adopted to solidify the cyclosporine A micro-emulsion; then corresponding auxiliary material for delayed release is adopted to prepare into particles which can release at the specific intestine; the gastric juice soluble particles and the enteric soluble particles are mixed in a certain proportion to get the cyclosporine stage-releasing preparation which can be slowly released by stage. The new preparation overcomes the deficiency of the big fluctuation of the blood concentration of the ordinary preparation, prolongs the effective concentration time of the medicine and reduces the incidence of adverse reaction. The preparation method is applied to the industrialized production.

Description

1. Technical field [0001] The invention relates to a pharmaceutical preparation and a preparation method thereof, in particular to a step-release cyclosporin A solid microemulsion preparation and a microemulsion solidification method thereof. 2. Background technology [0002] Ciclosporin A (Ciclosporin A) is a fat-soluble cyclic undecapeptide compound produced by the fungus Tolypocladium inflatum. Discovered in 1969, it was first used clinically in 1978. At present, cyclosporine A is mainly used for clinical immunosuppression, and this raw material has been produced by many pharmaceutical companies. The chemical name of cyclosporine is: cyclo[[(E)-(2S,3R,4R)-3-hydroxy-4-methyl-2-(methylamino)-6-octenoyl]-L-2 amino Butyryl-N-methylglycyl-N-methyl-L-leucyl-L-valyl-N-methyl-L-leucyl-L-alanyl-D-alanyl -N-methyl-L-leucyl-N-methyl-L-leucyl-N-methyl-L-valyl] [0003] Its structural formula is: [0004] [0005] Cyclosporine can act selectively on the initial stage of T lymp...

AI Technical Summary

Problems solved by technology

[0011] The problem in the clinical application of cyclosporine is that the blood drug concentration needs to be continuously monitored. Adverse reactions such as kidney damage and nerve damage are prone to occur when the blood drug concentration exceeds the therapeutic concentration, and rejection reactions will occur when the blood drug concentration is lower than the therapeutic concentration

Patent 01807863 mentions the technology of microemulsion solidification, but this technology adopts spray drying method, the production is complicated and the loss is large, and at the same time, the solidified microemulsion is not made into a delayed release preparation

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