A kind of multivesicular liposome containing exenatide and its preparation method and application
A multivesicular liposome and exenatide technology, which is applied to medical preparations containing active ingredients, liposome delivery, and medical preparations without active ingredients, etc., can solve the problems of frequent administration, poor patient compliance, Fast release speed and other problems, to achieve the effect of reducing adverse reactions, high drug loading concentration, and improving compliance
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[0054] Example 1
[0055] Step 1: Add 1mL containing 19.8mM (14.85mg) lecithin, 4.2mM (3.13mg) dipalmitoylphosphatidylglycerol, 30mM (11.61mg) cholesterol and 3.75mM (3.32mg) trioleic acid in a clean glass container A chloroform solution of glycerides. This solution is called the lipid phase.
[0056] Step 2: Add 1 mL of the inner aqueous phase of an aqueous solution of Exenatide 1 mg, 20 mM (4.20 mg) citric acid and 2.5% (25 mg) sucrose to the above glass container containing the lipid phase, and use a high-speed shearing machine Stir at 10,000 rpm for 10 minutes to obtain W / O colostrum.
[0057] Step 3: Place 5 mL of the outer aqueous phase solution containing 5.4% (w / v) (270 mg) glucose and 1% (50 mg) PVA on the colostrum layer, and then mix at a speed of 10,000 rpm for 10 seconds to obtain W / O / W type double emulsion.
[0058] Step 4: Transfer the double emulsion to a 250mL Erlenmeyer flask containing 5.4%(w / v)(270mg) glucose and 1%(50mg) PVA, 37℃ constant temperature water bat...
Example Embodiment
[0061] Example 2
[0062] Step 1: In a clean glass container, add 1 mL containing 5mM (3.96mg) hydrogenated soybean phospholipid, 0.5mM (0.38mg) dipalmitate phosphatidylserine, 10mM (3.87mg) cholesterol and 0.155mM (0.073mg) tricaprylin Ester in chloroform-ether (volume ratio 1:1) solution. This solution is called the lipid phase.
[0063] Step 2: Add 0.5 mL of the inner aqueous phase of an aqueous solution of Exenatide 5mg, 20mM (2.10mg) citric acid and 6% (30mg) sucrose into the above glass container containing the lipid phase, and use high-speed shearing The machine was stirred at a speed of 10,000 rpm for 10 minutes to obtain W / O colostrum.
[0064] Step 3: Place 7.5 mL of the outer aqueous solution containing 5.4% (w / v) (405 mg) glucose and 1% (75 mg) gelatin on the colostrum layer, and then mix at 4500 rpm for 40 seconds to obtain W / O / W type double emulsion.
[0065] Step 4: Transfer the double emulsion to a 250mL Erlenmeyer flask containing 9mL containing 5.4% (w / v) (486mg)...
Example Embodiment
[0068] Example 3
[0069] Step 1: Add 1 mL of dichloromethane solution containing 100 mM (75 mg) lecithin, 20 mM (8.49 mg) phosphatidic acid, 10 mM (3.87 mg) cholesterol and 13 mM (11.51 mg) triolein in a clean glass container. This solution is called the lipid phase.
[0070] Step 2: Add 1 mL of the inner aqueous phase of an aqueous solution containing 2.5 mg of Exenatide and 100 mM (21.01 mg) of citric acid to the above glass container containing the lipid phase, and stir with a high-speed shear at 10,000 rpm 10 minutes, get W / O colostrum.
[0071] Step 3: Place 20 mL of the outer aqueous phase solution containing 6% (w / v) (1200 mg) glucose and 1% (200 mg) hydroxymethyl starch on the colostrum layer, and then mix at 10,000 rpm for 10 seconds. Get W / O / W type double emulsion.
[0072] Step 4: Transfer the double emulsion to a 250mL Erlenmeyer flask containing 6% (w / v) (300mg) glucose and 1% (50mg) hydroxymethyl starch, 37℃ constant temperature water bath, make 8L / min A stream of ni...
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