CN1874764B - 含有银杏提取物的持续释放微粒及其制备方法 - Google Patents
含有银杏提取物的持续释放微粒及其制备方法 Download PDFInfo
- Publication number
- CN1874764B CN1874764B CN2004800319543A CN200480031954A CN1874764B CN 1874764 B CN1874764 B CN 1874764B CN 2004800319543 A CN2004800319543 A CN 2004800319543A CN 200480031954 A CN200480031954 A CN 200480031954A CN 1874764 B CN1874764 B CN 1874764B
- Authority
- CN
- China
- Prior art keywords
- release microparticles
- lasting release
- weight
- semen ginkgo
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000284 extract Substances 0.000 title claims abstract description 17
- 241000218628 Ginkgo Species 0.000 title claims description 42
- 235000011201 Ginkgo Nutrition 0.000 title claims description 42
- 235000008100 Ginkgo biloba Nutrition 0.000 title claims description 42
- 238000000034 method Methods 0.000 title claims description 29
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 238000013268 sustained release Methods 0.000 title abstract 2
- 239000012730 sustained-release form Substances 0.000 title abstract 2
- 239000000203 mixture Substances 0.000 claims abstract description 27
- 230000002045 lasting effect Effects 0.000 claims description 43
- 239000011859 microparticle Substances 0.000 claims description 43
- 238000000576 coating method Methods 0.000 claims description 42
- 210000000582 semen Anatomy 0.000 claims description 41
- 239000011248 coating agent Substances 0.000 claims description 40
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 26
- 239000000546 pharmaceutical excipient Substances 0.000 claims description 26
- 239000000654 additive Substances 0.000 claims description 18
- 230000000996 additive effect Effects 0.000 claims description 18
- 239000008187 granular material Substances 0.000 claims description 18
- 238000002360 preparation method Methods 0.000 claims description 18
- 230000007935 neutral effect Effects 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 16
- -1 flavones glucosides Chemical class 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000011230 binding agent Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 229920000058 polyacrylate Polymers 0.000 claims description 13
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical group CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 10
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 10
- 239000000314 lubricant Substances 0.000 claims description 10
- 238000004090 dissolution Methods 0.000 claims description 9
- 239000003814 drug Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 239000004014 plasticizer Substances 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 229930003944 flavone Natural products 0.000 claims description 8
- 235000011949 flavones Nutrition 0.000 claims description 8
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical group CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims description 7
- 229920002472 Starch Polymers 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 239000008107 starch Substances 0.000 claims description 7
- 235000019698 starch Nutrition 0.000 claims description 7
- 150000003505 terpenes Chemical class 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000001856 Ethyl cellulose Substances 0.000 claims description 6
- 229940079593 drug Drugs 0.000 claims description 6
- 229920001249 ethyl cellulose Polymers 0.000 claims description 6
- 229940075507 glyceryl monostearate Drugs 0.000 claims description 6
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical group [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 6
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 6
- PYGXAGIECVVIOZ-UHFFFAOYSA-N Dibutyl decanedioate Chemical group CCCCOC(=O)CCCCCCCCC(=O)OCCCC PYGXAGIECVVIOZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 5
- 235000019325 ethyl cellulose Nutrition 0.000 claims description 5
- 229930003935 flavonoid Natural products 0.000 claims description 5
- 150000002215 flavonoids Chemical class 0.000 claims description 5
- 235000017173 flavonoids Nutrition 0.000 claims description 5
- 229930182478 glucoside Natural products 0.000 claims description 5
- 235000000346 sugar Nutrition 0.000 claims description 5
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 claims description 4
- 239000008119 colloidal silica Substances 0.000 claims description 4
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- 229910021485 fumed silica Inorganic materials 0.000 claims description 4
- 239000001863 hydroxypropyl cellulose Substances 0.000 claims description 4
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 229930006000 Sucrose Natural products 0.000 claims description 3
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 3
- 239000007931 coated granule Substances 0.000 claims description 3
- 229920001688 coating polymer Polymers 0.000 claims description 3
- MVPICKVDHDWCJQ-UHFFFAOYSA-N ethyl 3-pyrrolidin-1-ylpropanoate Chemical compound CCOC(=O)CCN1CCCC1 MVPICKVDHDWCJQ-UHFFFAOYSA-N 0.000 claims description 3
- 235000019359 magnesium stearate Nutrition 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims description 3
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims description 3
- 239000004299 sodium benzoate Substances 0.000 claims description 3
- 235000010234 sodium benzoate Nutrition 0.000 claims description 3
- 229940045902 sodium stearyl fumarate Drugs 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- 239000005720 sucrose Substances 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 2
- 229920002907 Guar gum Polymers 0.000 claims description 2
- 229930195725 Mannitol Natural products 0.000 claims description 2
- 229920000881 Modified starch Polymers 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- DOOTYTYQINUNNV-UHFFFAOYSA-N Triethyl citrate Chemical compound CCOC(=O)CC(O)(C(=O)OCC)CC(=O)OCC DOOTYTYQINUNNV-UHFFFAOYSA-N 0.000 claims description 2
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 claims description 2
- 235000010443 alginic acid Nutrition 0.000 claims description 2
- 239000000783 alginic acid Substances 0.000 claims description 2
- 229920000615 alginic acid Polymers 0.000 claims description 2
- 229960001126 alginic acid Drugs 0.000 claims description 2
- 150000004781 alginic acids Chemical class 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 235000010980 cellulose Nutrition 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 235000013773 glyceryl triacetate Nutrition 0.000 claims description 2
- 239000000665 guar gum Substances 0.000 claims description 2
- 235000010417 guar gum Nutrition 0.000 claims description 2
- 229960002154 guar gum Drugs 0.000 claims description 2
- 239000000594 mannitol Substances 0.000 claims description 2
- 235000010355 mannitol Nutrition 0.000 claims description 2
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 claims description 2
- 229920000193 polymethacrylate Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 239000001253 polyvinylpolypyrrolidone Substances 0.000 claims description 2
- 235000013809 polyvinylpolypyrrolidone Nutrition 0.000 claims description 2
- 229920000523 polyvinylpolypyrrolidone Polymers 0.000 claims description 2
- 235000010413 sodium alginate Nutrition 0.000 claims description 2
- 239000000661 sodium alginate Substances 0.000 claims description 2
- 229940005550 sodium alginate Drugs 0.000 claims description 2
- 239000000600 sorbitol Substances 0.000 claims description 2
- 235000010356 sorbitol Nutrition 0.000 claims description 2
- 229960002622 triacetin Drugs 0.000 claims description 2
- 239000001069 triethyl citrate Substances 0.000 claims description 2
- VMYFZRTXGLUXMZ-UHFFFAOYSA-N triethyl citrate Natural products CCOC(=O)C(O)(C(=O)OCC)C(=O)OCC VMYFZRTXGLUXMZ-UHFFFAOYSA-N 0.000 claims description 2
- 235000013769 triethyl citrate Nutrition 0.000 claims description 2
- 239000000811 xylitol Substances 0.000 claims description 2
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 claims description 2
- 235000010447 xylitol Nutrition 0.000 claims description 2
- 229960002675 xylitol Drugs 0.000 claims description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims 2
- 229920003141 Eudragit® S 100 Polymers 0.000 claims 1
- 238000009472 formulation Methods 0.000 abstract description 3
- 244000194101 Ginkgo biloba Species 0.000 abstract 1
- 239000000321 herbal drug Substances 0.000 abstract 1
- 239000004531 microgranule Substances 0.000 description 11
- 239000000243 solution Substances 0.000 description 10
- 239000010410 layer Substances 0.000 description 9
- 241000196324 Embryophyta Species 0.000 description 7
- 239000002904 solvent Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- IYRMWMYZSQPJKC-UHFFFAOYSA-N kaempferol Chemical compound C1=CC(O)=CC=C1C1=C(O)C(=O)C2=C(O)C=C(O)C=C2O1 IYRMWMYZSQPJKC-UHFFFAOYSA-N 0.000 description 5
- 229920003134 Eudragit® polymer Polymers 0.000 description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 4
- REFJWTPEDVJJIY-UHFFFAOYSA-N Quercetin Chemical compound C=1C(O)=CC(O)=C(C(C=2O)=O)C=1OC=2C1=CC=C(O)C(O)=C1 REFJWTPEDVJJIY-UHFFFAOYSA-N 0.000 description 4
- MWDZOUNAPSSOEL-UHFFFAOYSA-N kaempferol Natural products OC1=C(C(=O)c2cc(O)cc(O)c2O1)c3ccc(O)cc3 MWDZOUNAPSSOEL-UHFFFAOYSA-N 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 3
- GAMYVSCDDLXAQW-AOIWZFSPSA-N Thermopsosid Natural products O(C)c1c(O)ccc(C=2Oc3c(c(O)cc(O[C@H]4[C@H](O)[C@@H](O)[C@H](O)[C@H](CO)O4)c3)C(=O)C=2)c1 GAMYVSCDDLXAQW-AOIWZFSPSA-N 0.000 description 3
- 239000002775 capsule Substances 0.000 description 3
- 150000002212 flavone derivatives Chemical class 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005243 fluidization Methods 0.000 description 3
- 229930182470 glycoside Natural products 0.000 description 3
- 210000000440 neutrophil Anatomy 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- VHBFFQKBGNRLFZ-UHFFFAOYSA-N vitamin p Natural products O1C2=CC=CC=C2C(=O)C=C1C1=CC=CC=C1 VHBFFQKBGNRLFZ-UHFFFAOYSA-N 0.000 description 3
- UBSCDKPKWHYZNX-UHFFFAOYSA-N Demethoxycapillarisin Natural products C1=CC(O)=CC=C1OC1=CC(=O)C2=C(O)C=C(O)C=C2O1 UBSCDKPKWHYZNX-UHFFFAOYSA-N 0.000 description 2
- GQODBWLKUWYOFX-UHFFFAOYSA-N Isorhamnetin Natural products C1=C(O)C(C)=CC(C2=C(C(=O)C3=C(O)C=C(O)C=C3O2)O)=C1 GQODBWLKUWYOFX-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- ZVOLCUVKHLEPEV-UHFFFAOYSA-N Quercetagetin Natural products C1=C(O)C(O)=CC=C1C1=C(O)C(=O)C2=C(O)C(O)=C(O)C=C2O1 ZVOLCUVKHLEPEV-UHFFFAOYSA-N 0.000 description 2
- HWTZYBCRDDUBJY-UHFFFAOYSA-N Rhynchosin Natural products C1=C(O)C(O)=CC=C1C1=C(O)C(=O)C2=CC(O)=C(O)C=C2O1 HWTZYBCRDDUBJY-UHFFFAOYSA-N 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- MOLPUWBMSBJXER-YDGSQGCISA-N bilobalide Chemical compound O([C@H]1OC2=O)C(=O)[C@H](O)[C@@]11[C@@](C(C)(C)C)(O)C[C@H]3[C@@]21CC(=O)O3 MOLPUWBMSBJXER-YDGSQGCISA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- GDCRSXZBSIRSFR-UHFFFAOYSA-N ethyl prop-2-enoate;2-methylprop-2-enoic acid Chemical compound CC(=C)C(O)=O.CCOC(=O)C=C GDCRSXZBSIRSFR-UHFFFAOYSA-N 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- SQOJOAFXDQDRGF-WJHVHIKBSA-N ginkgolide B Natural products O=C1[C@@H](C)[C@@]2(O)[C@@H]([C@H](O)[C@]34[C@@H]5OC(=O)[C@]23O[C@H]2OC(=O)[C@H](O)[C@@]42[C@H](C(C)(C)C)C5)O1 SQOJOAFXDQDRGF-WJHVHIKBSA-N 0.000 description 2
- 125000005456 glyceride group Chemical group 0.000 description 2
- 150000002338 glycosides Chemical class 0.000 description 2
- IZQSVPBOUDKVDZ-UHFFFAOYSA-N isorhamnetin Chemical compound C1=C(O)C(OC)=CC(C2=C(C(=O)C3=C(O)C=C(O)C=C3O2)O)=C1 IZQSVPBOUDKVDZ-UHFFFAOYSA-N 0.000 description 2
- 235000008800 isorhamnetin Nutrition 0.000 description 2
- 235000008777 kaempferol Nutrition 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- UXOUKMQIEVGVLY-UHFFFAOYSA-N morin Natural products OC1=CC(O)=CC(C2=C(C(=O)C3=C(O)C=C(O)C=C3O2)O)=C1 UXOUKMQIEVGVLY-UHFFFAOYSA-N 0.000 description 2
- 235000005875 quercetin Nutrition 0.000 description 2
- 229960001285 quercetin Drugs 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- LDVVTQMJQSCDMK-UHFFFAOYSA-N 1,3-dihydroxypropan-2-yl formate Chemical class OCC(CO)OC=O LDVVTQMJQSCDMK-UHFFFAOYSA-N 0.000 description 1
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 229910002016 Aerosil® 200 Inorganic materials 0.000 description 1
- 241001397104 Dima Species 0.000 description 1
- AMOGMTLMADGEOQ-FNZROXQESA-N Ginkgolide C Chemical compound O([C@H]1O2)C(=O)[C@H](O)C31[C@]14[C@@H](O)[C@@H]5OC(=O)[C@@H](C)[C@]5(O)[C@@]12C(=O)O[C@@H]4[C@@H](O)[C@H]3C(C)(C)C AMOGMTLMADGEOQ-FNZROXQESA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 241001597008 Nomeidae Species 0.000 description 1
- 229920003081 Povidone K 30 Polymers 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000003470 adrenal cortex hormone Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000005557 antagonist Substances 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 230000000702 anti-platelet effect Effects 0.000 description 1
- 230000002180 anti-stress Effects 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000005605 benzo group Chemical group 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000007766 cera flava Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229920001531 copovidone Polymers 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000002552 dosage form Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- FPUXKXIZEIDQKW-MFJLLLFKSA-N ginkgolide A Natural products O=C1[C@H](C)[C@@]2(O)[C@@H](O1)C[C@]13[C@@H]4OC(=O)[C@]21O[C@@H]1OC(=O)[C@H](O)[C@]31[C@@H](C(C)(C)C)C4 FPUXKXIZEIDQKW-MFJLLLFKSA-N 0.000 description 1
- AMOGMTLMADGEOQ-DPFZUGDXSA-N ginkgolide C Natural products O=C1[C@@H](C)[C@]2(O)[C@H]([C@H](O)[C@@]34[C@H]5[C@H](O)[C@@H](C(C)(C)C)[C@]63[C@H](O)C(=O)O[C@H]6O[C@@]24C(=O)O5)O1 AMOGMTLMADGEOQ-DPFZUGDXSA-N 0.000 description 1
- LMEHVEUFNRJAAV-HOSIAMDISA-N ginkgolide J Natural products O=C1[C@H](C)[C@@]2(O)[C@H](O1)C[C@@]13[C@H]4[C@@H](O)[C@@H](C(C)(C)C)[C@@]51[C@@H](O)C(=O)O[C@@H]5O[C@@]23C(=O)O4 LMEHVEUFNRJAAV-HOSIAMDISA-N 0.000 description 1
- FPUXKXIZEIDQKW-VKMVSBOZSA-N ginkgolide-a Chemical compound O[C@H]([C@]12[C@H](C(C)(C)C)C[C@H]3OC4=O)C(=O)O[C@H]2O[C@]24[C@@]13C[C@@H]1OC(=O)[C@@H](C)[C@]21O FPUXKXIZEIDQKW-VKMVSBOZSA-N 0.000 description 1
- SQOJOAFXDQDRGF-MMQTXUMRSA-N ginkgolide-b Chemical compound O[C@H]([C@]12[C@H](C(C)(C)C)C[C@H]3OC4=O)C(=O)O[C@H]2O[C@]24[C@@]13[C@@H](O)[C@@H]1OC(=O)[C@@H](C)[C@]21O SQOJOAFXDQDRGF-MMQTXUMRSA-N 0.000 description 1
- LMEHVEUFNRJAAV-UKWFQYJJSA-N ginkgolide-j Chemical compound O([C@H]1O2)C(=O)[C@H](O)[C@@]31[C@]14C[C@@H]5OC(=O)[C@@H](C)[C@]5(O)[C@@]12C(=O)O[C@@H]4[C@H](O)[C@H]3C(C)(C)C LMEHVEUFNRJAAV-UKWFQYJJSA-N 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 230000013595 glycosylation Effects 0.000 description 1
- 238000006206 glycosylation reaction Methods 0.000 description 1
- 239000007902 hard capsule Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000028867 ischemia Diseases 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 229940093429 polyethylene glycol 6000 Drugs 0.000 description 1
- 239000013047 polymeric layer Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000185 sucrose group Chemical group 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/14—Particulate form, e.g. powders, Processes for size reducing of pure drugs or the resulting products, Pure drug nanoparticles
- A61K9/16—Agglomerates; Granulates; Microbeadlets ; Microspheres; Pellets; Solid products obtained by spray drying, spray freeze drying, spray congealing,(multiple) emulsion solvent evaporation or extraction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
- A61K36/16—Ginkgophyta, e.g. Ginkgoaceae (Ginkgo family)
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5073—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals having two or more different coatings optionally including drug-containing subcoatings
- A61K9/5078—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals having two or more different coatings optionally including drug-containing subcoatings with drug-free core
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5089—Processes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/22—Anxiolytics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/24—Antidepressants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/02—Antithrombotic agents; Anticoagulants; Platelet aggregation inhibitors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/48—Preparations in capsules, e.g. of gelatin, of chocolate
- A61K9/50—Microcapsules having a gas, liquid or semi-solid filling; Solid microparticles or pellets surrounded by a distinct coating layer, e.g. coated microspheres, coated drug crystals
- A61K9/5005—Wall or coating material
- A61K9/5021—Organic macromolecular compounds
- A61K9/5036—Polysaccharides, e.g. gums, alginate; Cyclodextrin
- A61K9/5042—Cellulose; Cellulose derivatives, e.g. phthalate or acetate succinate esters of hydroxypropyl methylcellulose
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical & Material Sciences (AREA)
- Veterinary Medicine (AREA)
- Medicinal Chemistry (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Epidemiology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Natural Medicines & Medicinal Plants (AREA)
- Biomedical Technology (AREA)
- Neurosurgery (AREA)
- Neurology (AREA)
- Botany (AREA)
- Alternative & Traditional Medicine (AREA)
- Biotechnology (AREA)
- Mycology (AREA)
- Medical Informatics (AREA)
- Microbiology (AREA)
- Psychiatry (AREA)
- Vascular Medicine (AREA)
- Hospice & Palliative Care (AREA)
- Pain & Pain Management (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Urology & Nephrology (AREA)
- Hematology (AREA)
- Diabetes (AREA)
- Medicinal Preparation (AREA)
- Medicines Containing Plant Substances (AREA)
- Steroid Compounds (AREA)
Abstract
本发明的主题为含有银杏提取物的持续释放微粒形式的新的稳定草药制剂及其制备方法。
Description
发明领域
本发明的主题为含有银杏提取物的持续释放微粒形式的新的稳定制剂及其制备方法。
更具体的说,本发明涉及芯形式的微粒,所述芯含有银杏提取物与至少一种药物上可接受的赋形剂、包衣所述芯的中间层和外层,该微粒能够使得银杏从所述芯中持续释放。
发明背景
银杏提取物含有:黄酮糖苷类(类黄酮),诸如槲皮素、莰非醇(kaemferol)、异鼠李亭;和萜类(葡萄糖苷类),诸如白果内酯(Bilobadide)、银杏苦内酯A、银杏苦内酯B、银杏苦内酯C、银杏苦内酯J。
已知类黄酮具有抗血小板活化因子特性,由此萜类具有肾上腺皮质激素样、抗局部缺血特性并且已知它们为诱导抗应激活性的外周(peripherical)苯并二氧杂卓(benzodiapine)受体的拮抗剂。
提取自植物物质的粉末通常极具吸湿性、它们由此从颗粒和胶囊中抽吸水分,变得易脆。这导致稳定性极差。
植物提取物具有极差的流动性和可压缩性。因此,将这类提取物配制成持续释放片形式是不可能的,因为它在所有的压制步骤中都需要提取物与药物赋形剂的均匀混合物。
WO 00/69414涉及含有至少一种植物物质的颗粒,其特征在于它们各自包括具有200-4000μm粒径和用含有所述植物物质的层包衣的中性芯,该中性芯中合并有药物上合适的赋形剂。
发明内容
本发明的多颗粒形式使得获得包括银杏提取物的稳定和可再现的持续释放多颗粒剂型成为可能,它具有在ICH中定义为温度40℃和相对湿度75%的贮存过程中,特别是在加速贮存条件下稳定的优点。
本发明的持续释放微粒含有银杏提取物,其特征在于释放具有使用溶出测试仪I在37.0℃±0.5℃下测定的下列溶出度特性的总黄酮糖苷类(吊篮法,100rpm,900mL纯化水,UV检测:272nm):
T(小时) | 溶出度(w/w) |
0.5 | ≤45% |
2 | <75% |
8 | >60% |
更具体的说,所述持续释放微粒的特征在于下列特性:
T(小时) | 溶出度(w/w) |
0.5小时 | 5-45% |
2小时 | 30-70% |
8小时 | >60% |
这些含有银杏提取物的颗粒的特征进一步在于它们包括:
-用含有银杏提取物与至少一种药物上可接受的赋形剂的层包衣的中性芯;
-对所述芯包衣的任选的防水层,它包括至少聚合物或热塑性赋形剂;
-使所述提取物从活性芯中持续释放的外部聚合物层。
一般获自干燥的植物原料,优选叶子的银杏提取物可以在为液体、固体或具有中间稠度的浓缩制剂形式中;或银杏提取物可以为粉末形式。
流浸膏为液体制剂,一般来说,按质量或按体积计的1份流浸膏相当于按质量计的1份干燥原料。如果必要,调整这些制剂以便满足溶剂、成分或干残渣的含量要求。
煎膏剂为在具有流浸膏剂与干浸膏粉之间的中间稠度的制剂。通过部分蒸发制备用的溶剂来制备煎膏剂。从适当的观点来看,仅使用乙醇,或者使用水。煎膏剂具有的干残渣一般不低于70%重量。它们可以含有适当的抗菌性防腐剂。
干浸膏粉为通过蒸发生产用溶剂而获得的固体制剂。干浸膏粉具有的干残渣一般不低于95%重量。可以加入适当的惰性物质。
植物粉末在作为干燥形式使用时获自全植物或切碎或切断的植物部分。
银杏提取物含有高达40%重量的类黄酮和高达10%重量的萜类。
优选的银杏提取物含有24%重量的类黄酮和6%重量的萜类。
中性芯由选自糖、淀粉、甘露糖醇、山梨醇、木糖醇、纤维素、滑石粉及其混合物的物质组成。
中性芯还可以由80/20质量比的用80%重量的淀粉包衣的淀粉/蔗糖芯组成。在这类中性芯中,有利的是糖的质量比低于20%。
含有银杏提取物的层含有至少一种药物上可接受的赋形剂,该赋形剂选自粘合剂、抗静电剂或润滑剂,优选粘合剂。
所述粘合剂选自:纤维素聚合物,诸如乙基纤维素、羟丙基纤维素和羟丙基甲基纤维素;丙烯酸酯类聚合物,诸如不溶性丙烯酸酯甲基丙烯酸铵共聚物;聚丙烯酸酯类,如聚甲基丙烯酸酯共聚物;聚维酮类;交联聚维酮类(copovidones);聚乙烯醇类;虫胶;藻酸;藻酸钠;淀粉;预胶凝淀粉;蔗糖及其衍生物;瓜耳胶;聚乙二醇;优选聚乙烯吡咯烷酮(PVP)或虫胶。
所述粘合剂的使用比例至多约为银杏提取物重量的50%,优选至多20%。
可以用作流动助剂的抗静电剂选自微粒化或非微粒化滑石粉、热解法二氧化硅(Aerosil_R972)、胶态二氧化硅(Aerosil_;200)、沉淀二氧化硅(FP244)及其混合物。
所述抗静电剂的使用比例至多占所述GB提取物颗粒重量的5%,优选2%。
所述润滑剂选自硬脂酸镁、硬脂酸、硬脂酰醇富马酸钠、微粒化聚乙二醇(微粒化聚乙二醇6000)、白细胞素、苯甲酸钠及其混合物组成的组。
润滑剂的量占所述颗粒重量的0-3%,优选1-2%重量。
为了避免主要因银杏提取物导致的颗粒之间粘附,有必要可选地在包括银杏提取物的活性成分层与确保所述提取物持续释放的聚合物层之间涂布中间层。
所述中间防水层包括至少一种聚合物或热塑性赋形剂。
所述聚合物选自粘合剂,优选PVP。
在本发明的上下文中,热塑性赋形剂指的是具有25-100℃熔点且特征在于在约20℃温度下为糊状到半固体稠度的化合物。
热塑性赋形剂可以选自部分氢化油、蜂蜡、巴西棕榈蜡、石蜡、硅氧烷蜡、C12-C18脂肪醇类和脂肪酸类、固体、半合成甘油酯类、甘油一酯类、二酯类或三酯类、聚乙二醇类和糖基化聚氧乙烯化甘油酯类,优选单硬脂酸甘油酯及其混合物。
为了确保活性物质的持续溶出特性,用含有至少一种包衣剂的包衣组合物给颗粒包衣,所述包衣剂选自纤维素聚合物、丙烯酸酯类聚合物、虫胶及其混合物。
在纤维素聚合物中,有利的是使用乙基纤维素、羟丙基纤维素和羟丙基甲基纤维素。
在丙烯酸酯类聚合物中,有利的是使用单独或组合形式的不溶性丙烯酸酯甲基丙烯酸铵共聚物(Eudragit_RL100或RS100或Eudragit_RL30D或RS30D)、聚丙烯酸酯(Eudragit_;NE30D)或甲基丙烯酸酯共聚物(Eudragit_L100-55或Eudragit_L30D、Eudragite_100、Eudragit_EPO)。
可选地添加增塑剂、表面活性剂、抗静电剂或润滑剂作为包衣添加剂。
所述增塑剂选自癸二酸二丁酯、甘油三乙酸酯、三乙基乙酸酯、三乙基柠檬酸酯、邻苯二甲酸乙酯(ethylphtalate)或其混合物。增塑剂的使用比例至多约为包衣聚合物重量的30%,优选10%。
所述表面活性剂可以为阴离子、非离子、阳离子或两性表面活性剂。
所述抗静电剂的使用比例至多约为10%重量,优选0-3%重量,更优选低于1%重量。
所述润滑剂选自硬脂酸镁、硬脂酸、硬脂酰醇富马酸钠、微粒化聚乙二醇、苯甲酸钠及其混合物。
在任何情况下测定可操作的精确比例一般属于本领域技术人员的能力范围。
由此将上述所有所示比例和相对重量范围理解为优选的表示或各自仅为本发明的示例,但在其最宽泛的方面也并不作为对本发明的限定。
本发明还涉及制备上述颗粒的方法。
本发明的方法使得所述比例的再现性更为良好。
可以通过许多不同方法,例如挤出-球化、流化空气床法或包衣锅法生产微粒。
挤出-球化适合于具有高活性物质含量的丸粒,但需要更多的设备。
为了生产本发明的颗粒,优选包衣锅法,因为它仅需要简单的设备和操作。
微粒的良好球形和合适的大小有益于通过包衣薄膜控制药物释放并且使得成品具有良好的稳定性。
制备含有银杏提取物的持续释放微粒的方法包括下列相继步骤:
-将包括银杏提取物和至少一种药物赋形剂,优选粘合剂的层涂布在中性芯上;
-通过在由此获得的颗粒上喷雾包括聚合物或热塑性赋形剂的混悬液或溶液而在其上用中间层给所述芯包衣;
-通过喷雾持续释放包衣组合物的混悬液、分散液或溶液而用外层给由此包衣的颗粒进行包衣;
-干燥由此获得的包衣颗粒。
在该方法中,所有的步骤均可以在不同或相同的设备中进行,每一个步骤均在有相同或不同的赋形剂的混合物存在下进行。
制备的包衣液体为基于水的或使用有机溶剂,优选异丙醇制备。按照有利的实施方案,该包衣液体适合于使用常规的喷射分层设备喷雾,例如为安装了顶部内插件或底部(wurster)内插件的包衣锅或流化空气床。
按照本发明的方法,通过有利地经可选的喷雾包括至少一种药物赋形剂,优选粘合剂和银杏提取物的醇或水-醇溶液进行的粉末涂敷获得所述芯。
按照本领域中公知的包衣技术,优选在锅或流化空气床中制备本发明的颗粒。
通过下列实施例解释本发明,但本发明并不限于它们。
在如下实施例中,使用下列赋形剂:
-含有24%重量的黄酮糖苷类和6%重量的萜)的银杏提取物:Zhejiang Conba Pharmaceutical Co.Ltd.
-中性芯:NP Pharm
-PVPK30:上海华益科技经贸有限公司(Shanghai Huayi economyand trade industry of science and technology Co.Ltd.)
-虫胶:Alland & Robert
-滑石粉:上海天品药厂(Shanghai Tianpin pharmaceuticalfactory)
-乙基纤维素:FMC
-单硬脂酸甘油酯类
-癸二酸二丁酯
溶出测试方法
研发该方法以便检测总黄酮糖苷类从含有银杏提取物的微粒中的释放。
-设备:溶出测试仪I(吊篮法)
-速度:100rpm
-体积:900mL纯化水
-温度:37.0℃±0.5℃
-取样(mL):10ml
-UV检测:在272nm下UV
含水量测定
使用Karl Fischer水测定法测定含水量。
含量测定法
研发该方法以便测定来自含有银杏提取物的微粒的总黄酮糖苷类含量并且特别测定来自颗粒的槲皮素、莰非醇、异鼠李亭的含量。
来源:中国药典2000年版第一部,附录VID
-设备:HP1100液0相色谱仪(包括四元泵、UV检测器、二极管阵列检测器、化学工作站);
-色谱条件:
HPL柱:C184,6*250nm 15um Beijing Dima
流动相:甲醇,0.4%v/v磷酸溶液(50/50)
取样:10μl
UV检测:360nm
实施例1
步骤1-药物荷载
将84克中性芯置于包衣锅中,制备溶于异丙醇的10%(w/w)的虫胶粘合溶液,然后将该溶液在逐步添加银杏提取物的同时喷雾到中性芯上。
然后将颗粒过筛并且在60℃下干燥10小时。
步骤2-中间防水包衣
将4.8克单硬脂酸甘油酯类以10%(w/w)溶于异丙醇并将所得溶液喷在来自步骤1的颗粒上。
步骤3-持续释放包衣
通过在由此获得的颗粒上喷含有癸二酸二丁酯作为增塑剂(占干聚合物的25%)的16%(重量/重量)的Aquacoat ECD30水分散液而给所述颗粒包衣。
包衣层的量占来自步骤2的颗粒重量的8%重量。
然后将包衣的微粒过筛并且在65℃下和包衣锅中干燥10小时。
由该方法获得的持续释放微粒具有如下配方(片剂1):
表1
组分名称 | 功能 | 单位配方(g) | 配方百分比(%w/w) |
银杏提取物 | 活性组分 | 120.0 | 50.0 |
中性颗粒 | 芯 | 84.0 | 35.0 |
虫胶 | 粘合剂 | 9.6 | 4.0 |
Aquacoat ECD30 | 包衣剂 | 16.8 | 7.0 |
癸二酸二丁酯 | 增塑剂 | 4.1 | 1.7 |
单硬脂酸甘油酯 | 防水剂 | 4.8 | 2.0 |
滑石粉 | 抗静电剂 | 0.7 | 0.3 |
水 | 溶剂 | 适量 | / |
异丙醇 | 溶剂 | 适量 | / |
使用上述方法测定由此获得的持续释放颗粒的溶出度:结果如下表2中所示:
表2
T(小时) | 释放%(w/w) |
1 | 21.8% |
2 | 36.9% |
4 | 51.5% |
8 | 64.1% |
12 | 70.2% |
实施例2:
步骤1-药物荷载
将498克中性芯置于包衣锅中。
制备溶于异丙醇的10%(w/w)PVP K30粘合溶液,然后将该溶液在逐步添加银杏提取物的同时喷雾在中性芯上。
然后将颗粒过筛并且在60℃下干燥10小时。
步骤2-持续释放包衣
制备在异丙醇中含有14克虫胶的10%(w/w)包衣溶液并且使用喷射枪将其喷在微粒上,可以选择添加适量的滑石粉。
然后将包衣的微粒过筛并且在65℃下和包衣锅中干燥10小时。
由该方法获得的持续释放微粒具有如下配方:
表3
单位配方(g) | 配方百分比 | |
银杏提取物 | 498.0 | 49.8% |
中性颗粒 | 418.0 | 41.8% |
PVPK30 | 20.0 | 2% |
虫胶 | 14.0 | 1.4% |
滑石粉 | 50.0 | 5% |
异丙醇 | 适量 | a.q. |
按照中国药典法测定总黄酮糖苷类从持续释放颗粒中的溶出度:
结果如下表4中所示:
表4
T(小时) | 释放%(w/w) |
1 | 20.7% |
2 | 38.1% |
4 | 54.4% |
8 | 62.3% |
12 | 69.1% |
实施例3
按照实施例2的方法制备包括银杏的持续释放微粒(参见表5):
组分名称 | 功能 | 单位配方(g) | 配方百分比(%w/w) |
银杏提取物 | 活性物质 | 120 | 49,8 |
中性颗粒 | 芯 | 101 | 41,8 |
PVPK30 | 粘合剂 | 4.82 | 2 |
虫胶 | 包衣剂 | 3.37 | 1,4 |
滑石粉 | 抗静电剂 | 12.1 | 5 |
异丙醇 | 溶剂 | 适量 | / |
将由此获得的微粒包囊在硬胶囊中,每粒胶囊含有120mg银杏提取物,将所述胶囊包在PVC/Alu泡罩包中。
如ICH所定义的,在长期条件(25℃±2℃/HR 60%±10%)和加速条件(40℃±2℃/HR 75%±5%)下测试所得产品的稳定性。
将结果概括在表6和7中。
结论:3个月后,结果与规范符合。微粒在两种贮存条件下均保持稳定。
银杏胶囊120mg 加速稳定性研究
表6测试结果(40℃±2℃/HR 75%±5%)
*黑体字为规格
银杏胶囊120mg 长期稳定性研究
表7测试结果(25℃±2℃/HR 60%±10%)
*黑体字为规格
Claims (35)
1.含有银杏提取物的持续释放微粒,其特征在于释放具有使用溶出测试仪I在37.0℃±0.5℃下测定的下列溶出度特性的总黄酮糖苷类,采用吊篮法,100rpm,900mL纯化水,UV检测:272nm:
它们包括:
-用含有银杏提取物与至少一种药物上可接受的赋形剂的活性层包衣的中性芯;
-对上述经活性层包衣的中性芯包衣的中间防水层,它包含至少热塑性赋形剂,所述热塑性赋形剂为单硬脂酸甘油酯;和
-使所述提取物从所述活性层中持续释放的外部聚合物层,所述外部聚合物层含有至少一种包衣剂,该包衣剂选自纤维素聚合物、丙烯酸酯类聚合物、虫胶及其混合物。
2.权利要求1的持续释放微粒,其特征在于下列特性:
3.权利要求1或2的持续释放微粒,其特征在于所述中性芯由选自糖、淀粉、甘露糖醇、山梨醇、木糖醇、纤维素、滑石粉及其混合物的物质组成。
4.权利要求3的持续释放微粒,其特征在于所述中性芯由80/20质量比的淀粉/蔗糖组成。
5.权利要求1或2的持续释放微粒,其特征在于所述银杏提取物含有高达40%重量的类黄酮和高达10%重量的萜类。
6.权利要求5的持续释放微粒,其特征在于所述银杏提取物含有高达24%重量的类黄酮和高达6%重量的萜类。
7.权利要求1或2的持续释放微粒,其特征在于含有所述银杏提取物的层含有至少一种药物上可接受的赋形剂,该赋形剂选自粘合剂、抗静电剂或润滑剂。
8.根据权利要求7的持续释放微粒,其特征在于所述赋形剂为粘合剂。
9.权利要求8的持续释放微粒,其特征在于所述粘合剂选自下列物质:纤维素聚合物;丙烯酸酯类聚合物;聚丙烯酸酯类;聚维酮类;交联聚维酮类;聚乙烯醇类;虫胶;藻酸;藻酸钠;淀粉;预胶凝淀粉;蔗糖;瓜耳胶或聚乙二醇。
10.权利要求9的持续释放微粒,其特征在于所述粘合剂是聚乙烯吡咯烷酮。
11.权利要求9的持续释放微粒,其特征在于所述纤维素聚合物为乙基纤维素、羟丙基纤维素或羟丙基甲基纤维素;所述丙烯酸酯类聚合物为不溶性丙烯酸酯甲基丙烯酸铵共聚物;所述聚丙烯酸酯类为聚甲基丙烯酸酯共聚物。
12.权利要求9的持续释放微粒,其特征在于所述粘合剂为聚乙烯吡咯烷酮或虫胶。
13.权利要求9-12任一项的持续释放微粒,其特征在于所述粘合剂的使用比例至多为银杏提取物重量的50%。
14.权利要求13的持续释放微粒,其特征在于所述粘合剂的使用比例至多为银杏提取物重量的20%。
15.权利要求7的持续释放微粒,其特征在于所述抗静电剂用作流动助剂,它选自微粉化或非微粉化滑石粉、热解法二氧化硅、胶态二氧化硅、沉淀二氧化硅及其混合物。
16.权利要求15的持续释放微粒,其特征在于所述抗静电剂的使用比例至多占所述银杏颗粒重量的5%重量。
17.权利要求16的持续释放微粒,其特征在于所述抗静电剂的使用比例至多占所述银杏颗粒重量的2%重量。
18.权利要求7的持续释放微粒,其特征在于所述润滑剂选自硬脂酸镁、硬脂酸、硬脂酰醇富马酸钠、微粒化聚乙二醇、白细胞素、苯甲酸钠及其混合物。
19.权利要求18的持续释放微粒,其特征在于以所述颗粒的重量为基准,所述润滑剂的量为0-3%重量。
20.权利要求18的持续释放微粒,其特征在于以所述颗粒的重量为基准,所述润滑剂的量为1-2%重量。
21.权利要求1或2的持续释放微粒,其特征在于所述纤维素聚合物选自乙基纤维素、羟丙基纤维素和/或羟丙基甲基纤维素。
22.权利要求1或2的持续释放微粒,其特征在于所述丙烯酸酯类聚合物选自不溶性丙烯酸酯甲基丙烯酸铵共聚物、聚丙烯酸酯或甲基丙烯酸共聚物及其组合。
23.权利要求1或2的持续释放微粒,其特征在于所述外部聚合物层还含有增塑剂、表面活性剂、抗静电剂和/或润滑剂。
24.权利要求23的持续释放微粒,其特征在于所述增塑剂选自癸二酸二丁酯、甘油三乙酸酯、三乙基乙酸酯、三乙基柠檬酸酯、邻苯二甲酸乙酯或其混合物。
25.权利要求24的持续释放微粒,其特征在于所述增塑剂的使用比例至多为包衣聚合物重量的30%。
26.权利要求25的持续释放微粒,其特征在于所述增塑剂的使用比例至多为包衣聚合物重量的10%。
27.权利要求7的持续释放微粒,其特征在于所述抗静电剂选自微粒化或非微粒化滑石粉、热解法二氧化硅、胶态二氧化硅、沉淀二氧化硅及其混合物。
28.权利要求27的持续释放微粒,其特征在于所述抗静电剂的使用比例至多为10%重量。
29.权利要求28的持续释放微粒,其特征在于所述抗静电剂的使用比例为0-3%重量。
30.权利要求28的持续释放微粒,其特征在于所述抗静电剂的使用比例至多为1%重量。
31.制备权利要求1-30中任意一项的持续释放微粒的方法,其特征在于该方法包括下列相继步骤:
-将包含银杏提取物和至少一种药物赋形剂的活性层涂布在中性芯上;
-通过在由此获得的颗粒上喷雾包含热塑性赋形剂的混悬液或溶液而给所述经活性层涂布的中性芯包衣中间层,所述热塑性赋形剂为单硬脂酸甘油脂;
-通过喷雾持续释放包衣组合物的混悬液、分散液或溶液而给所述颗粒包衣外层,该包衣组合物选自纤维素聚合物、丙烯酸酯类聚合物、虫胶及其混合物;
-干燥由此获得的包衣颗粒。
32.根据权利要求31的制备持续释放微粒的方法,其特征在于所述药物赋形剂为粘合剂。
33.根据权利要求31的制备持续释放微粒的方法,其特征在于通过喷雾含有所述银杏提取物和赋形剂的醇或含水醇包衣溶液而将所述层涂布在所述中性芯上。
34.权利要求33的制备持续释放微粒的方法,其特征在于所述醇或含水醇包衣溶液含有异丙醇。
35.权利要求31-34中任意一项的制备持续释放微粒的方法,其特征在于所述外部包衣层为含有占干聚合物25%w/w的癸二酸二丁酯的16%w/w的乙基纤维素的水分散液。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03292512.5 | 2003-10-10 | ||
EP03292512 | 2003-10-10 | ||
PCT/IB2004/003542 WO2005034923A1 (en) | 2003-10-10 | 2004-10-11 | Sustained-release microgranules containing gingko biloba extract and the process for manufacturing these |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1874764A CN1874764A (zh) | 2006-12-06 |
CN1874764B true CN1874764B (zh) | 2012-08-01 |
Family
ID=34429540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2004800319543A Expired - Lifetime CN1874764B (zh) | 2003-10-10 | 2004-10-11 | 含有银杏提取物的持续释放微粒及其制备方法 |
Country Status (9)
Country | Link |
---|---|
US (1) | US7569236B2 (zh) |
EP (1) | EP1689373B1 (zh) |
JP (1) | JP5171038B2 (zh) |
KR (1) | KR101148734B1 (zh) |
CN (1) | CN1874764B (zh) |
BR (1) | BRPI0415242B8 (zh) |
CA (1) | CA2541578C (zh) |
MX (1) | MXPA06003942A (zh) |
WO (1) | WO2005034923A1 (zh) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10179130B2 (en) | 1999-10-29 | 2019-01-15 | Purdue Pharma L.P. | Controlled release hydrocodone formulations |
KR20130010512A (ko) | 1999-10-29 | 2013-01-28 | 유로-셀티크 소시에떼 아노뉨 | 서방성 하이드로코돈 제형 |
KR100960200B1 (ko) | 2000-10-30 | 2010-05-27 | 유로-셀티크 소시에떼 아노뉨 | 서방성 하이드로코돈 제형 |
JP2007254339A (ja) * | 2006-03-22 | 2007-10-04 | Takasago Internatl Corp | ロックイン型粉末 |
FR2938430B1 (fr) * | 2008-11-14 | 2011-05-20 | Debregeas Et Associes Pharma | Granules a base de plantes |
JP2013526523A (ja) | 2010-05-11 | 2013-06-24 | シマ ラブス インク. | メトプロロールを含むアルコール耐性持続放出性経口剤形 |
MX2012013021A (es) * | 2010-05-11 | 2012-12-17 | Cima Labs Inc | Formulaciones resistentes a alcohol. |
CH704253A1 (de) * | 2010-12-21 | 2012-06-29 | Mepha Gmbh | Pharmazeutische Zusammensetzung enthaltend pflanzliche Wirkstoffe. |
CN105435236A (zh) * | 2015-12-04 | 2016-03-30 | 中国林业科学研究院林产化学工业研究所 | 一种银杏抗性淀粉微球的制备方法 |
WO2017146286A1 (ko) * | 2016-02-26 | 2017-08-31 | 에스케이케미칼주식회사 | 친수성서방폴리머의 매트릭스를 이용한 은행잎 추출물의 약학조성물 및 이를 이용한 경구용 서방성 제제 |
KR101992394B1 (ko) | 2016-03-07 | 2019-06-24 | 에스케이케미칼 주식회사 | 친수성서방폴리머의 매트릭스를 이용한 은행잎 추출물의 약학조성물 및 이를 이용한 경구용 서방성 제제 |
KR101992404B1 (ko) | 2016-03-07 | 2019-06-24 | 에스케이케미칼 주식회사 | 친수성서방폴리머의 매트릭스를 이용한 은행잎 추출물의 약학조성물 및 이를 이용한 경구용 서방성 제제 |
CA3183185A1 (en) * | 2020-06-18 | 2021-12-23 | Jia-Ning Xiang | Pharmaceutical granulations of water-soluble active pharmaceutical ingredients |
CA3194665A1 (en) | 2020-10-05 | 2022-04-14 | Jia-Ning Xiang | Modified release compositions of a gamma-hydroxybutyric acid derivative |
TW202300139A (zh) | 2021-03-19 | 2023-01-01 | 凱瑞康寧生技股份有限公司 | γ-羟基丁酸衍生物的聯合釋放製劑的藥代動力學 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6340478B1 (en) * | 1999-06-07 | 2002-01-22 | Bio Dar Ltd. | Microencapsulated and controlled-release herbal formulations |
CN1351489A (zh) * | 1999-05-17 | 2002-05-29 | D.B.F.公司 | 含有植物物质的颗粒及其制备方法 |
Family Cites Families (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1443063A (fr) | 1963-08-27 | 1966-06-24 | Key Pharma | Préparation contenant de la théophylline |
AT336190B (de) | 1974-07-23 | 1977-04-25 | Hurka Wilhelm | Verfahren zur herstellung von mikropellets zur behandlung von erkrankungen des mund- und rachenraumes |
US4411882A (en) | 1978-12-21 | 1983-10-25 | Sandoz Ltd. | Galenical compositions |
JPS6327424A (ja) * | 1986-07-17 | 1988-02-05 | Shionogi & Co Ltd | 徐放性製剤およびその製造法 |
US5026560A (en) | 1987-01-29 | 1991-06-25 | Takeda Chemical Industries, Ltd. | Spherical granules having core and their production |
FR2613223B1 (fr) | 1987-04-03 | 1991-09-13 | Biogalenique Laboratoires | Forme galenique se presentant sous la forme de grains hydrosolubles, en particulier a base d'un extrait sec de ginkgo biloba, et son procede de preparation |
JP2515802B2 (ja) * | 1987-05-26 | 1996-07-10 | 大正製薬株式会社 | 安定化製剤の製造方法 |
FR2616068A1 (fr) | 1987-06-04 | 1988-12-09 | Phytland Sa Laboratoires | Procede de stabilisation des principes actifs de produits vegetaux et les compositions pharmaceutiques renfermant lesdits principes actifs stabilises |
FR2623714B1 (fr) | 1987-11-26 | 1990-04-20 | Ethypharm Sa | Forme a liberation prolongee du diltiazem, et son medicament ainsi obtenu |
US5876758A (en) | 1989-08-04 | 1999-03-02 | Lvmh Recherche | Solid complex particles comprising a biologically active solid substance, mode of preparation and compositions for topical use containing them and intended to treat biological surfaces |
FR2685635B1 (fr) | 1991-12-27 | 1995-06-30 | Lvmh Rech | Particules solides complexes comprenant une substance solide biologiquement active, leur mode de preparation et compositions a usage topique les renfermant destinees au traitement de surfaces biologiques. |
US5104661A (en) | 1989-08-14 | 1992-04-14 | Technology Unlimited, Inc. | Reverse loading of liposomes |
JP2542122B2 (ja) | 1990-04-18 | 1996-10-09 | 旭化成工業株式会社 | 球状核、球形顆粒およびその製造方法 |
FR2682874B1 (fr) | 1991-10-24 | 1993-12-10 | Rinrone Ets | Procede pour la preparation d'un extrait de principes actifs sous forme seche adsorbable et microgranules adsorbables ainsi obtenus. |
FR2692146B1 (fr) | 1992-06-16 | 1995-06-02 | Ethypharm Sa | Compositions stables de microgranules d'omeprazole gastro-protégés et leur procédé d'obtention. |
US5387390A (en) * | 1993-04-26 | 1995-02-07 | Atoma International Inc. | Method of molding a vehicle door panel with a soft arm rest |
IL110035A0 (en) | 1994-06-16 | 1994-10-07 | Tapuach Natural Technologies 1 | Homeopathic formulations |
FR2721512A1 (fr) | 1994-06-28 | 1995-12-29 | Maurice Jacob | Formulation et procédé de préparation de sphéroïdes à base de solutions d'origine végétale. |
DE19515971A1 (de) * | 1995-05-02 | 1996-11-07 | Bayer Ag | Kombinationspräparate mit vaskulärer Wirkung |
FR2737134B1 (fr) | 1995-07-27 | 1998-05-29 | Bionatec Sarl | Procede de fabrication de granules et granules ainsi obtenus |
DE19539361A1 (de) | 1995-10-23 | 1997-04-24 | Basf Ag | Verfahren zur Herstellung von mehrschichtigen, festen Arzneiformen zur oralen oder rektalen Verabreichung |
WO1997016078A1 (de) | 1995-10-27 | 1997-05-09 | Givaudan-Roure (International) S.A. | Aromengranulat |
FR2742660B1 (fr) | 1995-12-22 | 1998-04-03 | Ethypharm Lab Prod Ethiques | Nouvelles formes de microgranules a liberation prolongee contenant du diltiazem comme principe actif |
US6120621A (en) * | 1996-07-08 | 2000-09-19 | Alcan International Limited | Cast aluminum alloy for can stock and process for producing the alloy |
CA2269078C (en) | 1996-10-16 | 2012-01-24 | Shaman Pharmaceuticals, Inc. | Enteric formulations of proanthocyanidin polymer antidiarrheal compositions |
FR2759293B1 (fr) | 1997-02-11 | 1999-04-30 | Ethypharm Lab Prod Ethiques | Microgranules contenant du cisplatine, procede de fabrication, preparation pharmaceutique et utilisation en polychimiotherapie ou en association avec une radiotherapie |
FR2771291B1 (fr) | 1997-11-21 | 2000-02-25 | Ethypharm Lab Prod Ethiques | Spheroides, procede de preparation et compositions pharmaceutiques |
FR2769524B1 (fr) | 1998-01-06 | 1999-12-31 | Ethypharm Lab Prod Ethiques | Dispositif d'enrobage pour granules a absorber par voie orale |
FR2774288B1 (fr) | 1998-01-30 | 2001-09-07 | Ethypharm Sa | Microgranules d'omeprazole gastroproteges, procede d'obtention et preparations pharmaceutiques |
FR2774910B1 (fr) | 1998-02-16 | 2001-09-07 | Ethypharm Lab Prod Ethiques | Microgranules de sulfate de morphine, procede de fabrication et preparations pharmaceutiques |
US6030621A (en) | 1998-03-19 | 2000-02-29 | De Long; Xie | Ginkgo biloba composition, method to prepare the same and uses thereof |
DK173431B1 (da) * | 1998-03-20 | 2000-10-23 | Gea Farmaceutisk Fabrik As | Farmaceutisk formulering omfattende en 2-[[(2-pyridinyl)methyl]sulfinyl]benzimidazol med anti-ulcusaktivitet samt fremgangs |
ES2197600T3 (es) * | 1999-01-29 | 2004-01-01 | Disphar International B.V. | Composiciones farmaceuticas. |
FR2790668B1 (fr) * | 1999-03-12 | 2002-07-26 | D B F | Granules contenant une substance vegetale et leur procede de preparation |
CN1361697A (zh) * | 1999-08-12 | 2002-07-31 | 研究及应用科学协会股份有限公司 | 银杏提取物的用途 |
CN1177603C (zh) * | 2002-03-22 | 2004-12-01 | 山西亚宝药业集团股份有限公司 | 银杏叶缓释片 |
ITMI20020990A1 (it) * | 2002-05-10 | 2003-11-10 | Indena Spa | Formulazioni utili nel trattamento dell'impotenza maschile e femminile |
JP4528490B2 (ja) * | 2002-06-25 | 2010-08-18 | 和光化学株式会社 | ギンコライド−aを含有する抗不安剤 |
DE10250543A1 (de) * | 2002-10-29 | 2004-05-19 | Röhm GmbH & Co. KG | Mehrschichtige Arzneiform |
EP1667665B1 (de) * | 2003-09-03 | 2009-01-07 | Pharmaton S.A. | Kapseln enthaltend wirkstoffpellets mit unterschiedlichen freisetzungsprofilen |
US20060280789A1 (en) * | 2004-12-27 | 2006-12-14 | Eisai Research Institute | Sustained release formulations |
-
2004
- 2004-10-11 JP JP2006530765A patent/JP5171038B2/ja not_active Expired - Fee Related
- 2004-10-11 WO PCT/IB2004/003542 patent/WO2005034923A1/en active Application Filing
- 2004-10-11 KR KR1020067008797A patent/KR101148734B1/ko not_active IP Right Cessation
- 2004-10-11 EP EP04791759.6A patent/EP1689373B1/en not_active Expired - Lifetime
- 2004-10-11 US US10/574,923 patent/US7569236B2/en not_active Expired - Fee Related
- 2004-10-11 CN CN2004800319543A patent/CN1874764B/zh not_active Expired - Lifetime
- 2004-10-11 MX MXPA06003942A patent/MXPA06003942A/es active IP Right Grant
- 2004-10-11 BR BRPI0415242A patent/BRPI0415242B8/pt active IP Right Grant
- 2004-10-11 CA CA2541578A patent/CA2541578C/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1351489A (zh) * | 1999-05-17 | 2002-05-29 | D.B.F.公司 | 含有植物物质的颗粒及其制备方法 |
US6340478B1 (en) * | 1999-06-07 | 2002-01-22 | Bio Dar Ltd. | Microencapsulated and controlled-release herbal formulations |
Also Published As
Publication number | Publication date |
---|---|
EP1689373A1 (en) | 2006-08-16 |
MXPA06003942A (es) | 2006-07-05 |
BRPI0415242B1 (pt) | 2017-06-27 |
CA2541578C (en) | 2014-03-25 |
BRPI0415242A (pt) | 2006-12-12 |
EP1689373B1 (en) | 2019-04-03 |
JP5171038B2 (ja) | 2013-03-27 |
BRPI0415242B8 (pt) | 2021-05-25 |
CN1874764A (zh) | 2006-12-06 |
US20070009598A1 (en) | 2007-01-11 |
US7569236B2 (en) | 2009-08-04 |
KR20060115869A (ko) | 2006-11-10 |
JP2007508292A (ja) | 2007-04-05 |
CA2541578A1 (en) | 2005-04-21 |
WO2005034923A1 (en) | 2005-04-21 |
KR101148734B1 (ko) | 2012-07-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1874764B (zh) | 含有银杏提取物的持续释放微粒及其制备方法 | |
US6890561B1 (en) | Microencapsulated and controlled-release formulations of isoflavone from enriched fractions of soy and other plants | |
JP5026787B2 (ja) | ムコ粘着性組成化ペプチド−又はタンパク質−作用物質を含有する多層粒子形剤形、及びこの剤形の製法 | |
CA2895529C (en) | Supersaturated stabilized nanoparticles for poorly soluble drugs | |
EP0194838A2 (en) | Controlled-release pharmaceutical formulation | |
CZ299110B6 (cs) | Sferoidy, multicásticové farmaceutické prostredkya zpusob jejich výroby | |
SE509029C2 (sv) | Långtidsverkande diklofenak-natriumpreparat | |
US6340478B1 (en) | Microencapsulated and controlled-release herbal formulations | |
US20090130200A1 (en) | Granules for controlled release of tamsulosin | |
CN100475197C (zh) | 口服的可持续释放的药用组合物 | |
JP4296562B2 (ja) | 硫酸モルヒネ微小顆粒、その調製方法およびそれを含有する組成物 | |
FI81259B (fi) | Foerfarande foer framstaellning av pao xantiderivat baserade, magen icke irriterade laekemedelsproduktel. | |
EP1839649A1 (en) | Coated formulations for tolterodine | |
JPH0530810B2 (zh) | ||
CN105611915B (zh) | 包衣组合物 | |
MX2012010273A (es) | Sistema de recubrimiento novedoso. | |
KR20010006647A (ko) | 로라타딘과 슈도에페드린을 함유한 캅셀제 조성물 | |
CN102114003B (zh) | 羟基红花黄色素a缓释微丸及其制备方法和应用 | |
WO2010108077A2 (en) | Controlled release particulates containing water-insoluble drug | |
CN104042643A (zh) | 一种银杏酮酯固体自微乳缓释微丸及其制备方法 | |
Hamedelniel | Development and Characterization of Matrix Pellets Prepared by Extrusion/Sheronization of Atenolol | |
JP2005104840A (ja) | 消化管粘膜付着性マイクロスフェアー | |
CS217143B1 (en) | Medicinal preparation containing the pentoxyfylin |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CX01 | Expiry of patent term |
Granted publication date: 20120801 |