CS217143B1 - Medicinal preparation containing the pentoxyfylin - Google Patents
Medicinal preparation containing the pentoxyfylin Download PDFInfo
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- CS217143B1 CS217143B1 CS141481A CS141481A CS217143B1 CS 217143 B1 CS217143 B1 CS 217143B1 CS 141481 A CS141481 A CS 141481A CS 141481 A CS141481 A CS 141481A CS 217143 B1 CS217143 B1 CS 217143B1
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- Czechoslovakia
- Prior art keywords
- pentoxifylline
- eudragit
- organic solvent
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- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000008187 granular material Substances 0.000 claims abstract description 11
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229920001577 copolymer Polymers 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- 125000001453 quaternary ammonium group Chemical group 0.000 claims abstract description 4
- BYPFEZZEUUWMEJ-UHFFFAOYSA-N Pentoxifylline Chemical compound O=C1N(CCCCC(=O)C)C(=O)N(C)C2=C1N(C)C=N2 BYPFEZZEUUWMEJ-UHFFFAOYSA-N 0.000 claims description 26
- 229960001476 pentoxifylline Drugs 0.000 claims description 24
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 239000003814 drug Substances 0.000 claims description 10
- 235000019359 magnesium stearate Nutrition 0.000 claims description 7
- 239000000546 pharmaceutical excipient Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000008116 calcium stearate Substances 0.000 claims description 4
- 235000013539 calcium stearate Nutrition 0.000 claims description 4
- 239000004359 castor oil Substances 0.000 claims description 4
- 235000019438 castor oil Nutrition 0.000 claims description 4
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 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
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 3
- DCXXMTOCNZCJGO-UHFFFAOYSA-N Glycerol trioctadecanoate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 239000013543 active substance Substances 0.000 claims description 3
- 238000009472 formulation Methods 0.000 claims description 3
- 235000013773 glyceryl triacetate Nutrition 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 229960002622 triacetin Drugs 0.000 claims description 3
- 229920002126 Acrylic acid copolymer Polymers 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 229940126601 medicinal product Drugs 0.000 claims description 2
- 229920003145 methacrylic acid copolymer Polymers 0.000 claims 2
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 150000002148 esters Chemical class 0.000 abstract description 3
- 230000017531 blood circulation Effects 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 abstract 1
- 210000005259 peripheral blood Anatomy 0.000 abstract 1
- 239000011886 peripheral blood Substances 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 229920003151 Eudragit® RL polymer Polymers 0.000 description 15
- 229920003152 Eudragit® RS polymer Polymers 0.000 description 15
- FSXVSUSRJXIJHB-UHFFFAOYSA-M ethyl prop-2-enoate;methyl 2-methylprop-2-enoate;trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium;chloride Chemical compound [Cl-].CCOC(=O)C=C.COC(=O)C(C)=C.CC(=C)C(=O)OCC[N+](C)(C)C FSXVSUSRJXIJHB-UHFFFAOYSA-M 0.000 description 15
- DNKKLDKIFMDAPT-UHFFFAOYSA-N n,n-dimethylmethanamine;2-methylprop-2-enoic acid Chemical compound CN(C)C.CC(=C)C(O)=O.CC(=C)C(O)=O DNKKLDKIFMDAPT-UHFFFAOYSA-N 0.000 description 15
- 239000000454 talc Substances 0.000 description 10
- 229910052623 talc Inorganic materials 0.000 description 10
- 229940079593 drug Drugs 0.000 description 9
- 210000004369 blood Anatomy 0.000 description 8
- 239000008280 blood Substances 0.000 description 8
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 7
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 7
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 7
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 7
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- 230000036765 blood level Effects 0.000 description 5
- 239000002552 dosage form Substances 0.000 description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- 239000008186 active pharmaceutical agent Substances 0.000 description 4
- 229940088679 drug related substance Drugs 0.000 description 4
- LRFVTYWOQMYALW-UHFFFAOYSA-N 9H-xanthine Chemical compound O=C1NC(=O)NC2=C1NC=N2 LRFVTYWOQMYALW-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 238000005243 fluidization Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- 241000282472 Canis lupus familiaris Species 0.000 description 2
- 229920003134 Eudragit® polymer Polymers 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- 230000000181 anti-adherent effect Effects 0.000 description 2
- RYYVLZVUVIJVGH-UHFFFAOYSA-N caffeine Chemical compound CN1C(=O)N(C)C(=O)C2=C1N=CN2C RYYVLZVUVIJVGH-UHFFFAOYSA-N 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 210000001035 gastrointestinal tract Anatomy 0.000 description 2
- MYWUZJCMWCOHBA-VIFPVBQESA-N methamphetamine Chemical compound CN[C@@H](C)CC1=CC=CC=C1 MYWUZJCMWCOHBA-VIFPVBQESA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- ZFXYFBGIUFBOJW-UHFFFAOYSA-N theophylline Chemical compound O=C1N(C)C(=O)N(C)C2=C1NC=N2 ZFXYFBGIUFBOJW-UHFFFAOYSA-N 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 229940075420 xanthine Drugs 0.000 description 2
- RQAOSCDWTLRAIN-UHFFFAOYSA-N 3,7-dimethyl-1-(3-oxobutyl)purine-2,6-dione Chemical compound O=C1N(CCC(=O)C)C(=O)N(C)C2=C1N(C)C=N2 RQAOSCDWTLRAIN-UHFFFAOYSA-N 0.000 description 1
- -1 5-oxo-hexyl Chemical group 0.000 description 1
- RTAPDZBZLSXHQQ-UHFFFAOYSA-N 8-methyl-3,7-dihydropurine-2,6-dione Chemical class N1C(=O)NC(=O)C2=C1N=C(C)N2 RTAPDZBZLSXHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 208000010201 Exanthema Diseases 0.000 description 1
- LPHGQDQBBGAPDZ-UHFFFAOYSA-N Isocaffeine Natural products CN1C(=O)N(C)C(=O)C2=C1N(C)C=N2 LPHGQDQBBGAPDZ-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- MJNMGZDMKXWINE-UHFFFAOYSA-N acetic acid;chloroform;propan-2-ol Chemical compound CC(C)O.CC(O)=O.ClC(Cl)Cl MJNMGZDMKXWINE-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 229960001948 caffeine Drugs 0.000 description 1
- VJEONQKOZGKCAK-UHFFFAOYSA-N caffeine Natural products CN1C(=O)N(C)C(=O)C2=C1C=CN2C VJEONQKOZGKCAK-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- BLEBFDYUDVZRFG-UHFFFAOYSA-N dichloromethane;propan-2-ol Chemical compound ClCCl.CC(C)O BLEBFDYUDVZRFG-UHFFFAOYSA-N 0.000 description 1
- 238000012377 drug delivery Methods 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 201000005884 exanthem Diseases 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000622 irritating effect Effects 0.000 description 1
- 229940083747 low-ceiling diuretics xanthine derivative Drugs 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000144 pharmacologic effect Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229940093429 polyethylene glycol 6000 Drugs 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007909 solid dosage form Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229960000278 theophylline Drugs 0.000 description 1
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- Medicinal Preparation (AREA)
Abstract
Vynález sa týká perorálneho, kusového přípravku s obsahom pentQxifylínu,kt0fý-flp3sů« buje zvýšené prekrvenie v centrálnom a perifémom krvnom riečišti a z ktorého účinná látka je postupné, počas niekoíkých hodin uvofnovaná. Tento efekt je umožněný použitím novej pomocnej létky kopolymerizátu esterov kyseliny /met-/ akrylovej s obsahom kvartémych amoniovýoh skupin. Uvedená pomocná látku obsahuje tak jádro ako i obal obaloválej tablety. Nanáša sa na granule resp. hotové matricové tablety vo formě nástreku pomocou trysky.The present invention relates to an oral, lump preparation containing pentxifylline, blood flow in the central and peripheral blood stream and from which it is effective the substance is gradual, over several hours release. This effect is made possible by use of a new auxiliary flying copolymer ester methacrylic acid content quaternary ammonium groups. Auxiliary the fabric contains both the core and the shell coated tablets. Apply to granules respectively. finished matrix tablets in the mold spraying using a nozzle.
Description
Vynález fia týká perorálněho, kusového přípravku s obsahom pentoxifylínu /3,7-dimetyll-/5-oxo-heyl/-xantín/, z.Jctorého sa uvedená lieóivá látka postupné, počas nlekoíkýoh hodin uvolňuje a sposobu jeho přípravy. Postupné uvoíňovanie liečivej látky je zabezpečené kopolymerlzátom esterov kyšeliry akrylovej a metakrylovej obsahujúoím kvarterné amonné skupiny.The present invention relates to an oral, unitary preparation containing pentoxifylline (3,7-dimethyl-1- (5-oxo-heyl) -xanthine), wherein said drug is gradually released over a period of several hours and a process for its preparation. The gradual release of the drug substance is provided by copolymerisate of esters of acrylic and methacrylic acid containing quaternary ammonium groups.
Technologickým .poetupom a speoiálnymi pomocnými látkami se nioža docielil, aby liečivá látka - po styku tuhej liekovej formy s tekutinou bola postupné uvolňovaná. Je to významné najmá vtedy, ak sa jedná o liečivo a krotkým biologickým polčasom alebo dráždivým působením na stenu gastrointestinálneho traktu.By means of a technological procedure and speoial excipients, it has been achieved below that the drug substance is gradually released upon contact of the solid dosage form with the liquid. This is particularly important when it is a drug and a tenuous half-life or irritant effect on the gastrointestinal tract wall.
Je už dávno známe, že metylxantíny / kofein, teofylín / dráždia žalúdočnú stenu tak isto ako pentoxifylín, ktorý má okrem toho aj krátký biologický polčas / Hinze, H.J./1972/ Parmakokinetika 3,7-dimetyl-l-/5-oxo-hexyl/-xantínu / BL 191/ u Íudí. Arzneim.Porsch. 22, 1144-1151/.It has long been known that methylxanthines / caffeine, theophylline / irritate the stomach wall as well as pentoxifylline, which also has a short half-life (Hinze, HJ (1972)) 3,7-dimethyl-1- (5-oxo-hexyl) parmakokinetics (xanthine) (BL 191) in humans. Arzneim.Porsch. 22, 1144-1151].
Pentoxifylín patří do skupiny liečiv, ktoré zvyáujú prekrvovanie v perifémom a cent rálnom krvnom riečišti* Tento efekt sa dosahuje zvýšenou flexibilitou erytrocytov a zníženou viskozitou krvi. Nevýhodou bola skutočnosl, že sa musel velmi často aplikoval a to vo vysokých dávkách, napriek tomu nočné hladiny liečiva v krvi prakticky klesli na nulu.Pentoxifylline belongs to a group of drugs that increase blood circulation in the peripheral and central blood vessels. * This effect is achieved by increased erythrocyte flexibility and reduced blood viscosity. The disadvantage was the fact that it had to be administered very often at high doses, yet night drug levels in the blood practically dropped to zero.
Z toho dovodu sa vykonali rožne pokusy, aby hladina lieku v krvi bola vysoká a vyrovnaná. Například v patentovom spise NSR 2 520 978 / Personálně aplikovatelné pevné dávková oie formy vodorozpustných xantínových derivátov / sa uvádza / str.3 / , že ako pomocná látka sa použila hydroxyetylcelulóza. V tomto případe derivát celulózy po styku s tekutinou vytvára hydrogél, z ktorého sa potom vodorozpustný xantínový derivát postupné uvolňuje.For this reason, various attempts have been made to keep the blood level of the drug high and balanced. For example, NSR 2,520,978 (Personally Applicable Solid Dosage Formulations of Water-Soluble Xanthine Derivatives) discloses (page 3) that hydroxyethylcellulose was used as an excipient. In this case, the cellulose derivative upon contact with the fluid forms a hydrogel from which the water-soluble xanthine derivative is then gradually released.
Nevýhodou je, že kusová forma připravená pomocou hydroxyetylcelulózy po styku s tekutinou nlekolkonásobne zvýši svoj objem a stane sa nekontrolované priestupnou pre vodu.V případe, že takto připravená lieková forma obsahuje velmi vodorozpustnú látku ako je například pentoxifylín, doohádza k rýohlemu vyplaveniu, čo spósobuje ostrý a krátký vrchol koncentráΌ cie liečiva v krvi. Tento efekt sa dokázal pri skušaní liečivého přípravku Trental 400 / ochranná značka firmy Albert-Boussel Pharma 6mbH, Wiesbaden, NSR / pre liečivý prípravok s obsahom 400 mg pentoxifylínu v hydroxyetylcelulozovom základe / na íuáoch a námi / tab.The disadvantage is that the unit form prepared by hydroxyethylcellulose after its contact with the fluid increases its volume several times and becomes uncontrolled through the water. and a short peak of drug concentration in the blood. This effect has been demonstrated in the trial of Trental 400 (Albert-Boussel Pharma 6mbH trademark, Wiesbaden, Germany) for a 400 mg pentoxifylline medicinal product in hydroxyethylcellulose base (see below).
1, 2, graf 1 / v predklinickom skúšaní. Maximum hladiny v krvi bol v obidvoch prípadoch po eoa 2 hodinách po podaní s véími ostrým vrchom, po ktorom následoval prudký pokles konoentrácie.1, 2, graph 1 / in preclinical testing. The maximum blood level was in both cases after eo and 2 hours after administration with a very sharp peak, followed by a sharp decrease in concentration.
Uvedený nepriaznlvý efekt sa riešil výberom novej pomocnéj látky, ktoré umožňuje vyšší stupeň reguláoie odovzdávania liečivej látky v gaatrointestinálnom trakte. Jedná^sa o dva druhy kopolymerizátov esterov kyseliny akrylovej a metakrylovej obsahujúcej kvartérné araoniové skupiny.This adverse effect has been addressed by selecting a new excipient which allows a higher degree of regulation of drug delivery in the gaatrointestinal tract. These are two types of copolymers of acrylic and methacrylic acid esters containing quaternary araonic groups.
Prvý typ obsahuje poměr kopolymerizátu esterov kyseliny /met-/ akrylovej ku kvartérnym amoniovým skupinám l<20 /Eudragit RL/ druhý typ 1*40 /Eudragit RS/ /Eudragit R je ochranná značka firmy Rfthm GmbH, Darmstadt,NSR/· Uvedené pomocné látky po styku s tekutinou napučiavajú a stávajú se prlepustnou pre vodu nezávisle od pH prostredia /Lehmann, K., Dreher, . D.t A969/· Priepustné akrylové živice k prípeave depotných liekovýoh foriem, Pharm.Ind.The first type contains the ratio of copolymerizate of (meth) acrylic acid to quaternary ammonium groups 1 <20 / Eudragit RL / second type 1 * 40 / Eudragit RS / / Eudragit R is a trademark of Rfthm GmbH, Darmstadt, Germany upon contact with the liquid, they swell and become water-impermeable independent of the pH of the environment. D.t A969 / Permeable acrylic resins for the preparation of depot dosage forms, Pharm.Ind.
31. 319-322/. Výhodou oproti hydroxyetylcelulóze je to, že přestup vody do liekovej formy resp. přestup liečivej látky z liekovej formy je presne regulovatelný nakoíko jednotlivé pomocné látky líěia v priepustnosti pre voduj typ RL je íahko, RS lažko priepústný.31. 319-322 /. The advantage over hydroxyethylcellulose is that the transfer of water to the dosage form resp. the transfer of the drug substance from the dosage form is precisely controllable as the individual excipients differ in permeability for water type RL is easy, RS is slightly permeable.
Pódia rozpustnosti liečivej látky g množstva jednotlivých typov kopolymerizátov je přestup pentoxifylínu do gastrointestinálneho traktu presne regulovateíný. Pomocnou látkou možno obaloval granulát alebo tablety.Because of the solubility of the drug substance g of the amount of each type of copolymer, the transfer of pentoxifylline into the gastrointestinal tract is precisely controllable. The excipient may be coated with granules or tablets.
Postup bol nasledovný | zmes pentoxifylínu, mastenoa, polyvinylpyrolidonu, práškového Budragltu RL a RS sa po homogenizáoii postrekovala vo fluidizačnom zaria&ení vodou pomocou vysokotlakovej trysky. Vytvořený granulát sa vysušil a óalej sa postrekoval roztokom zmesi Eudragitu RL a RS / rozúšladlot izopropanol - metylénohlorid /· Po vysušení se ku granulátu přidal mastenec, stearan vápenatý alebo horečnatý a po zmiešaní tabletoval na matricovéThe procedure was as follows a mixture of pentoxifylline, mastenoa, polyvinylpyrrolidone, powdered Budraglt RL and RS was sprayed in a fluidizing apparatus with water using a high-pressure nozzle after homogenization. The granulate formed was dried and then sprayed with a solution of Eudragit RL and RS (isopropanol-methylene chloride solution). After drying, talc, calcium or magnesium stearate was added to the granulate, and after mixing it was tableted to a matrix.
217 143 tablety. Tablety bolí vo vhodnom zariadení postrekované roztokem Eudragitu RI a ES s prí davkom mastenoa alebo stearanu horečnatého ako antiadhezívnej látky a polyetylénglykolu / m.h. 6000 / , glyceríntriacetátu alebo ricinového oleja ako zmakčovadla.217 143 tablets. The tablets were sprayed in a suitable machine with a solution of Eudragit RI and ES with the addition of mastenoid or magnesium stearate as an anti-adhesive and polyethylene glycol / m.h. 6000) glycerin triacetate or castor oil as a plasticizer.
Farmakokinetické sledovania sa prevédzali na paooh hmotnosti 10 - 15 kg * Boli rozděleni do dvoch skupin po 7 psoch . Skupině A boli perorálne aplikované 800 mg TrentalR - u 400 / 2 tablety/ tab.l / skupině B 800 mg pentoxifylínu připravované uvedenou metodou pomocou kopolymerizátu esterov kyseliny /met-/akrylovéj /tábl.2/« Bola sledovaná hladina pentoxifylínu v krvi v nasledujúoioh časovýoh intervaloch po podaní liečivého přípravu 1 h,2 h, h, 6 h, 8 h, 12 h, 20 h, 16 h, 24 h.Pharmacokinetic follow-ups were transferred to a paooh of 10-15 kg. * They were divided into two groups of 7 dogs each. Group A was administered orally 800 mg of Trental R - 400 mg / tablet / tab.1 / group B 800 mg of pentoxifylline prepared by the above method using a copolymerizate of (meth) acrylic acid esters / tab.2. followed by time intervals after administration of the drug preparation 1 h, 2 h, h, 6 h, 8 h, 12 h, 20 h, 16 h, 24 h.
Koncentráoia pentoxifylínu v krvi sa sledovala pomocou.vysokotlakoýej, kvapalinovej chromatografie· Extrakoia sa previedla následovně i vzorky krvi boli oentrlfugované pri 4000 to./mln.lO minút. 3ml odoentrifugovanej plazmy sa zmiešala so 100 ul vodným roztokom l-/3-oxobutyl/-3,7-dimetylxantínom/ vnútorný Standard/ konoentráeie od 0,5 «β až 1,5 ug.The concentration of pentoxifylline in the blood was monitored by high pressure liquid chromatography. Extraction was performed as follows and blood samples were also centrifuged at 4000 rpm for 10 minutes. 3 ml of de-centrifuged plasma was mixed with 100 µl of an aqueous solution of 1- (3-oxobutyl) -3,7-dimethylxanthine (internal Standard) conentration from 0.5 µg to 1.5 µg.
K tejto zmesi sa přidali nasledujúoe roztokyi 250 ul O,1N kyseliny chlorovodíkovej alebo 250 TEL O,1N NaOH a 6 ml zmesi 5 % izopropanolu v chloroforme. Roztok sa mieSal pomooou vysokootáčkového mixeru a po fázovej separáoii 5 ml organlokej fázy bolo vyměněných 5 ml nového extrakčného činidla. Táto operáoia sa opakovala celkom trikrát. Spojené organioké roztoky sa odpařili, zvyšok sa rozpustil v 30 ul cloroforme. Takto připravená vzorka bola chromát ograf ováná na vysokotlakovom kvapalinovom chromatografe/Hewled-Peckard/· Meraaie sa prevádzalo pomocou zabudovaného spektrofotometre a integrátora /Speotra Physics-Minlgrátor/» Chromatografické detaily boli nasledovné i dížka kolony - 250 mm, vnútorný priemer 3 mm, nosič Li Clí ros orb ál 60,5 um /Měrek/ , tlak 20 MPa, elučný systém « chloroform -izopropanol-kyselina octová /96,5i2,5il/ absorpčné maximum 273 mm, detekčný limit 5 ug/ml plazmy. Na obrázku 1 je znázorněný graf Hladina pentoxifylínu v krvi u psov, kde plná čiara znamená Pentoxifyiín v základe s kopolymerizátom esterov kyseliny /met-/ akrylověj a přerušovaná čiara znamená Pentoxifylín v hydroxyetylcelulózovom základe.To this mixture was added the following solutions of 250 µl of 0.1N hydrochloric acid or 250 TEL 0.1N NaOH and 6 ml of a 5% isopropanol / chloroform mixture. The solution was mixed using a high speed mixer and after phase separation of 5 ml of the organic phase, 5 ml of a new extraction agent were replaced. This operation was repeated a total of three times. The combined organic solutions were evaporated, the residue was dissolved in 30 µl of chloroform. The sample prepared in this way was chromatographed on a high-pressure liquid chromatograph (Hewled-Peckard). The measurement was carried out by means of a built-in spectrophotometer and integrator (Speotra Physics-Minlgrator). The target was 60.5 µm (Gauge), 20 MPa pressure, chloroform-isopropanol-acetic acid (96.5 12.5 µl), absorption maximum 273 mm, detection limit 5 µg / ml plasma. Figure 1 is a graph of blood levels of pentoxifylline in dogs where the solid line represents Pentoxifylin in the base with an acid / meth / acrylic ester copolymer and the dashed line represents Pentoxifylin in the hydroxyethylcellulose base.
Ako z výéledkov vyplývá, sledované dva druhy liekovýoh foriem sa odlišujú v uvolňovaní liečivej látky in vivo. Prípravok obsahujúci pentoxifylín v hydroxyetylcelulózovom základe dosahuje svoju najvyššiu hladinu krvi po 2 hodinách a to s veími ostrým vrqholom, po ktorom sa hladina pentoxifylínu prudko zníži. Tento jav je z terapeutického híadiska veími nevý hodný, nakoíko farmakologický účinok látok upravujúce hemoreológiu je viazaný na hladinu liečiva v krvi.As a result, the two types of dosage forms studied differ in the release of the active substance in vivo. The formulation containing pentoxifylline in the hydroxyethylcellulose base reaches its highest blood level after 2 hours, with a very sharp shake, after which the pentoxifylline level drops sharply. This phenomenon is very disadvantageous from a therapeutic point of view since the pharmacological effect of hemorrheic agents is related to the blood level of the drug.
Lieková forma obaahujúoa pentoxifylín a kopolymerizót kyseliny / mat-/ akrylovej uvoí nuje liečlvú látku pomalšie, vyrovnanejšie, najvyššie hladiny sa udržujú na rovnakej úrov ni praktioky dve hodiny* Svačšila sa tiež plocha pod křivkou a to o 10 % * Suhrne možno konstatoval, že lieková forma obsahujúca pentoxifylín a kopolymerizát kyseliny ( met-) akrylovej je z terapeutického híadiska výhodnějšia ako kombináoia pentoxifylínu a hydroxyetyloelulózy, pretože dává vyrovnanejšie hladiny účinnej látky v krvi a biologická dostupnost je zvýšená,The dosage form contains pentoxifylline and the copolymerizate of the acid / mat / acrylic acid releases the drug more slowly, more evenly, the highest levels are maintained at the same level practically for two hours * The area under the curve has also increased by 10% * the form containing pentoxifylline and (meth) acrylic acid copolymer is, from a therapeutic point of view, more advantageous than a combination of pentoxifylline and hydroxyethyl cellulose because it gives more balanced levels of the active substance in the blood and the bioavailability is increased,
V áalaom je predmet vynálezu objasněný na troeh príkladoch bez toho, že by sa na tieto výlučné obmedzoval.In the foregoing, the invention is illustrated by three examples without being limited to these.
217 143217 143
Příklad 1.Example 1.
Příklad 1 - Sposob přípravyExample 1 - Preparation Method
Do fluidizačného zariadenia sa vpraví pentoxifylíň, časí Eudragitu RL a RS, oasí mas tenoa a polyvinylpyrolidon upravené na vhodnú veíkosí častíc. Zmes sa postrekuje vo fluidnom stave pri 60 °C a 2,00 MPa nástrekového tlaku destilovanou vodou. Po vysušení sa granulát obaíuje druhou časnou Eudragitu RL a RS, rozpustného v organickom rozpúsíadle, Po vysušení sa obalený granulát upraví, přidá sa druhá časí raastenca a stearan vápenatý. Tabletuje sa na celkovú hmotnost tablety 500,0 mg. Hotové matricové tablety sa vo vhodnom zariadení obaíujú so zmesou kopolyraerizátu esterov kyseliny / met-/ akrylovej s prídavkom antiadhezívnej látky mastanca a zmakčovadla polyetylénglykolu 6000.The pentoxifylline, a portion of Eudragit RL and RS, the mass of tenoa and polyvinylpyrrolidone, adjusted to a suitable particle size, are introduced into the fluidization apparatus. The mixture is sprayed in a fluidized state at 60 ° C and 2.00 MPa spray pressure with distilled water. After drying, the granulate is coated with a second early organic solvent soluble Eudragit RL and RS. After drying, the coated granulate is treated, a second portion of raasten and calcium stearate is added. It is tabletted to a total tablet weight of 500.0 mg. The finished matrix tablets are coated in a suitable machine with a mixture of the copolyraerisate esters of the acid / meth / acrylic esters with the addition of an anti-sticking talc and a polyethylene glycol plasticizer 6000.
Příklad 2Example 2
Příklad 2 - Sposob přípravyExample 2 - Preparation Method
Do fluidizačného zariadenia sa vpraví pentoxifylín, časf Eudragitu RL a RS, časť mastenca a polyvinylpyrolidon upravený .na vhodnú veíkosí častíc, Zmes sa postrekuje destilovanou vodou vo vhodnom dražovacom zariadení, Po vysušení sa granulát obaluje druhou časíou eudragitu RL a RS rozpuštěného v organickom rozpúšíadle. Po vysušení sa granulát upraví, přidá sa druhá časť raastenca a stearan horečnatý, Zabletuje sa na matricové tablety. Hotové tablety sa obalujú Eudragitom RL a RS s prídavkom mastenca a zmakčovadla glyceríntriacetátu.Pentoxifylline, a portion of Eudragit RL and RS, a portion of talc and polyvinylpyrrolidone treated to a suitable particle size are introduced into the fluidization apparatus. The mixture is sprayed with distilled water in a suitable coating apparatus. After drying, the granulate is coated with a second portion of eudragit RL and RS dissolved. After drying, the granulate is treated, the second part of the rash and magnesium stearate is added. It is ground into matrix tablets. The finished tablets are coated with Eudragit RL and RS with the addition of talc and a glycerol triacetate plasticizer.
Příklad 3Example 3
Zloženie jadra» Pentoxifylín 400Core composition »Pentoxifylín 400
400, 0000 mg400, 0000 mg
Filmový obal iFilm cover i
217 143217 143
Příklad 3 - Sposob přípravyExample 3 - Preparation Method
Do fluidizačného zariadenia sa vpraví pentoxifylín, časť Eudragitu RL a RS, mastenca a polyvinylpyrolidonu. anes sa postrakuje destilovanou vodou pri nástrekovom tlaku 0,3 MPa . Po vysušení sa granulát obaluje druhou častou kopolymerizátu rozpuštěného v organiokom rozpúšíadle. Po vysušení sa přidá druhá časť mastenca a stearín. Tabletuje sa na celková hmotnost 500 mg. Hotové matricové tablety sa obalujú zmesou Eudragitu RL a RS s prídavkom antiadhezívnej látky stearanu horečnatého a zmakčovadla ricínového oleja.Pentoxifylline, a portion of Eudragit RL and RS, talc and polyvinylpyrrolidone are introduced into the fluidization apparatus. Anes are sprayed with distilled water at an injection pressure of 0.3 MPa. After drying, the granulate is coated with a second portion of the copolymer dissolved in an organic solvent. After drying, a second portion of talc and stearin are added. It is tabletted to a total weight of 500 mg. The finished matrix tablets are coated with a mixture of Eudragit RL and RS with the addition of an anti-adhesive magnesium stearate and a castor oil softener.
Claims (2)
Priority Applications (1)
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CS141481A CS217143B1 (en) | 1981-02-27 | 1981-02-27 | Medicinal preparation containing the pentoxyfylin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CS141481A CS217143B1 (en) | 1981-02-27 | 1981-02-27 | Medicinal preparation containing the pentoxyfylin |
Publications (1)
Publication Number | Publication Date |
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CS217143B1 true CS217143B1 (en) | 1982-12-31 |
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Family Applications (1)
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CS141481A CS217143B1 (en) | 1981-02-27 | 1981-02-27 | Medicinal preparation containing the pentoxyfylin |
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CS (1) | CS217143B1 (en) |
-
1981
- 1981-02-27 CS CS141481A patent/CS217143B1/en unknown
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