GLP-1 analogue and GC-C receptor agonist composite sustained release preparation and preparation method thereof
A receptor agonist and sustained-release preparation technology, which is applied in drug combination, drug delivery, and pharmaceutical formulations, can solve problems such as increasing the risk of adverse reactions in the gastrointestinal tract, and achieve prevention and relief of constipation, good curative effect, and improved life. quality effect
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Embodiment 1
[0029] 1. Dissolve gelatin and glycerin of equal quality in sterile water to prepare an aqueous solution containing gelatin and glycerin, wherein the mass concentrations of gelatin and glycerin are both 5 mg / L, and dissolve liraglutide and linaclotide in a solution containing In the aqueous solution of gelatin and glycerin, the total mass concentration that obtains liraglutide and linaclotide is the water phase of 50mg / L; Add PVP in the water phase, obtain the mixture; The ester was dissolved in dichloromethane to obtain an oil phase with a mass concentration of 2400mg / L; wherein, the mass ratio of liraglutide and linaclotide was 1:1, and the ratio of polylactide and polylactide-glycolide The mass ratio is 1:3;
[0030] 2. Put the above mixture and the oil phase in the mixer, and mix evenly at a speed of 12000r / min to form a water-in-oil emulsion. Add the water-in-oil emulsion to water and mix evenly to obtain a water-in-oil-in-water emulsion. Double emulsion, wherein, the vo...
Embodiment 2
[0034]1. Dissolve gelatin and glycerin of equal quality in sterile water to prepare an aqueous solution containing gelatin and glycerin, wherein the mass concentrations of gelatin and glycerin are both 5 mg / L, and dissolve liraglutide acetate and plecanatide in In the aqueous solution containing gelatin and glycerin, the total mass concentration that obtains liraglutide acetate and plecanatide is the aqueous phase of 70mg / L; Add PVA in the aqueous phase, obtain mixture; Polylactide and the polylactide that molecular weight is 20000 and Polylactide-glycolide with a molecular weight of 20,000 was dissolved in ether to obtain an oil phase with a mass concentration of 540 mg / L; wherein, the mass ratio of liraglutide acetate and plecanatide was 20:1, and polylactide The mass ratio of polylactide to glycolide is 3:2;
[0035] 2. Put the above mixture and the oil phase in the mixer, and mix evenly at a speed of 12000r / min to form a water-in-oil emulsion. Add water to the water-in-oil...
Embodiment 3
[0039] 1. Dissolve gelatin and glycerin of equal quality in sterile water to prepare an aqueous solution containing gelatin and glycerin, wherein the mass concentrations of gelatin and glycerin are both 5 mg / L, and dissolve exenatide and linaclotide in a solution containing In the aqueous solution of gelatin and glycerin, the total mass concentration that obtains exenatide and linaclotide is the aqueous phase of 60mg / L; Add polysodium methacrylate in the aqueous phase, obtain mixture; 2, the molecular weight is 15000 Polylactide and polylactide-glycolide with a molecular weight of 20,000 were dissolved in acetone to obtain an oil phase with a mass concentration of 320 mg / L; wherein, the mass ratio of exenatide and linaclotide was 5:1, The mass ratio of polylactide and polylactide-glycolide is 1:1;
[0040] 2. Put the above mixture and the oil phase in the mixer, and mix evenly at a speed of 12000r / min to form a water-in-oil emulsion. Add the water-in-oil emulsion to water and ...
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