CN102716090A - Sustained-release metformin hydrochloride pellets and preparation method thereof - Google Patents
Sustained-release metformin hydrochloride pellets and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the field of medicinal preparations and discloses sustained-release metformin hydrochloride pellets and a preparation method thereof. The sustained-release metformin hydrochloride pellet comprises a drug-containing pellet core and a sustained-release coating coated on the drug-containing pellet core. The drug-containing pellet core comprises 75 to 100 parts by weight of metformin hydrochloride and 0 to 25 parts by weight of one or more excipients, wherein the sum of the part numbers of metformin hydrochloride and the one or more excipients is 100 or the part numbers are increased or decreased based on a certain ratio, and also comprises one or more surfactants and one or more wetting agents, wherein the weight of the one or more surfactants is 0.1 to 8% of the total weight of metformin hydrochloride and the one or more excipients; and the weight of the one or more wetting agents is 0.1 to 30% of the total weight of metformin hydrochloride and the one or more excipients. Through the preparation method, the sustained-release metformin hydrochloride pellets having low friability, a high yield, small particle sizes and smooth surfaces are obtained and are convenient for further processing. In the invention, the drug-containing pellet cores are coated with the sustained-release coatings to form the sustained-release metformin hydrochloride pellets; and a bioavailability experiment is carried out and proves that the sustained-release metformin hydrochloride pellets has the characteristics of controllable quality and good stability in vitro, and has the characteristic of sustained release in vivo.
Description
Technical field
The invention belongs to field of pharmaceutical preparations, relate to a kind of diabecron sustained-release micropill and preparation method thereof.
Technical background
Micropill generally is meant the spherical or type spherical preparation of diameter between 0.5-1.5mm.Micropill is as the multiple unit type drug-supplying system; Compare with traditional single dose drug-supplying system such as conventional tablet; Micropill particularly slow-release micro-pill has following advantage: be distributed in whole gastrointestinal tract rapidly after 1. getting in the body; Because dosage is dispersed in the single micropill, medicine and gastrointestinal contact area increase greatly, thereby have improved bioavailability and reduced some drugs to the gastrointestinal zest; 2. micropill then is 120-180min generally at 120-640min the gastric emptying time of conventional tablet, so the drug absorption of this system receives the influence of food and individual variation less, and the absorption dynamics repeatability is better; 3. because absorption dynamics is the summation of many junior unit drug release behaviors, the defective of single micropill or the damaged release conditions that can not influence total formulation can reduce the prominent risk of releasing, and have higher safety; 4. can the micropill of different drug release characteristics be combined into multiple unit system to reach ideal rate of releasing drug, obtain the expection blood concentration to reach curative effect (" modern medicinal agents ", 1998; The Chinese Medicine science and technology Multiparticulate Drug Delivery Systems for Controlled Release of publishing house [J] .Tropical Journal of Pharmaceutical Research, 2008,7 (3); Multiparticulate formulation approach to colon specific drug delivery:current perspectives [J] .J Pharm Pharm Sci, 2006.9 (3)).
In recent decades; Though the method for preparing of micropill has a lot, like spherical container shaping method or the like in coating pan pill method, ebullated bed or fluid bed pill method, centrifugal pill method, fusion pill method, vibration spraying pill method, the liquid; Extrude spheronization because its unique advantage has become the main process technology (Chinese Journal of Pharmaceuticals of micropill preparation; 1998,29 (8), Multiparticulate Drug Delivery Systems for Controlled Release [J] .Tropical Journal of Pharmaceutical Research; 2008,7 (3); Multiparticulate formulation approach to colon specific drug delivery:current perspectives [J] .J Pharm Pharm Sci, 2006.9 (3)).
Though the preparation of micropill has many similar aspects with the wet granulation process of conventional tablet, mainly contain active component, excipient, wetting agent composition like prescription, technology mainly contains mixing, system soft material; The soft material of " hold tight in one's hands agglomerating, the light pressure promptly loose " is easy to compacting in flakes, still; Under the same situation; Owing to reasons such as extrusion difficulty, the shaping of can't rolling are micropill preparation failures, so, be suitable for preparing the micropill active component and must possess to extrude round as a ball characteristic or add and possess the excipient of extruding round as a ball characteristic in a large number and could realize (contemporary Chinese application pharmacy; 2011,1 (28)).
Diabetes have been considered to the third-largest harm humans behind tumor, cardiovascular and cerebrovascular disease in the whole world healthy " killer ".At present, the patient of the diabetes that the whole world has been made a definite diagnosis is about 1.5 hundred million, it is predicted will reach 3.0 hundred million in 2025.According to statistics, the sickness rate of diabetes is 3%-5% in the world, and the sickness rate for each person more than 50 years old is 10%.Interrelated data shows that there are more than 3,000 ten thousand diabeticss in China, annual newly-increased 150～2,000,000 patients, and wherein 11 diabetes mellitus types account for more than 90%.Metformin hydrochloride is global best-selling type ii diabetes medicine.The two fleshes of hydrochloric acid diformazan are a kind of pair of flesh class antidiabetic medicines, the two flesh hydrochlorates of chemistry 1,1 one dimethyl by name; Molecular formula C
4H
11N
5-HCl; Molecular weight: 165.63; Be white crystals or crystalline powder, odorless; In water, be prone to dissolve, in methanol, dissolve, slightly soluble in ethanol, insoluble in ether or chloroform; Mp 220-225 ℃; UV233nm; Chemical structural formula is following:
There are ordinary tablet/capsule and slow releasing tablet/slow releasing capsule in the oral commercial preparation of metformin hydrochloride at present.Patent CN1589782 has described a kind of diabecron sustained-release granule, with ethyl cellulose metformin hydrochloride is carried out the slow release layer coating.Patent CN 1568950 has described a kind of diabecron sustained-release capsule, celphere is made the medicine carrying granule with the medicine-feeding of metformin hydrochloride solution, again with sustained release coating material preparation slow-releasing granules.
According to reported in literature, extrude strip among the micropill preparation technology under action of gravity or through cutting off when being cleaved into diameter and being the doubly irregular brachyplast of hole diameter of sieve (perforated) plate 2-3 (disrumpent feelings ratio), be rolled onto ganoid micropill (Chinese Journal of New Drugs, 2001.10 (9)) easily.
Surfactant is a kind of like this material; Be adsorbed on table (boundary) face of hybrid solid material or mixed material with " type micelle ", " necklace " or " chain pearl " form; Significantly change the attribute (" surfactant application principle (professional book) ", Chemical Industry Press, 2003) of material.In pharmaceutics, surfactant mainly as solubilizing agent, emulsifying agent, wetting agent; Dispersant, flocculating agent, foaming agent and defoamer; Antibacterial and antibacterial, detergent and its have (" pharmaceutics " Tu Xide, People's Health Publishers 2000.3) such as the absorption of the active component of promotion, antistatic property, carrier function, targetings; " application of surfactant in pharmacy ", People's Health Publisher, 1996.2).Particularly, if the characteristic dissolubility of Orally active composition less than 1mg/100ml, often adds surfactant in reagent combination, be beneficial to the dissolving and the absorption (" pharmaceutics " Cui Fude, People's Health Publisher, sixth version) of active component.In disclosed patent documentation (CN182304A, CN 101574326A, CN 101513403A, CN 101185653A), the purpose of adding surfactant in its prescription also is for solubilising and the bioavailability that improves active component.
Coating material generally all is wiring solution-forming or processes liquid dispersion and use.The prescription of coating solution or dispersion liquid generally should contain following basic composition: coating filmogen, plasticizer and solvent (or disperse medium) need add porogen sometimes.Mostly sustained release coating is the macromolecule insoluble polymer, and its solvent or disperse medium can be divided into two types in organic solvent and water.Organic solvent exists significant disadvantages, and is for example dangerous, and the danger of blast is arranged; Air pollution has potential toxicity; Reclaim difficulty and reclaimer costliness etc.The great advantage of aqueous dispersion is (China Medicine University's journal, 2002,33 (suppl): 290-293) such as solids content is high, viscosity is low, easy to operate, film forming fast, the coating time is short.
The extended release coatings of extensive use at present mainly is ethyl cellulose, acrylic resin, cellulose acetate etc., and these clothing materials all have corresponding aqueous dispersion listing.Wherein, Aquacoat has Aquacoat and Surelease (Sulisi), and the acrylic resin aqueous dispersion has Eudragit (You Teqi) RS30D, Eudragit (You Teqi) RL30D, Eudragit (You Teqi) NE30D, Eudragit (You Teqi) L30D (" medicament microcapsule new technique and application " Chen Qing China People's Health Publisher).
When some permeability slow release or release controlling coating material are processed the film of closure; Often medicine can't dissolve from micropill, infiltrate; Being everlasting adds the permeability that some porogen increase coating membrane in the coating solution of these materials, to obtain the coated preparation of required rate of releasing drug.Mostly porogen is that some water miscible materials are as gathering ethanol class, polyvidone, sucrose, salt and other water soluble film-forming materials such as hypromellose, hyprolose; Or even insoluble solid composition such as Pulvis Talci, magnesium stearate, silicon dioxide, white titanium pigment etc. (" oral sustained-release preparation " Tang Xing People's Health Publisher, " modern medicinal agents " flat its can People's Health Publisher).
Usually adopt water-soluble material as the sealing coat clothing can effectively reduce micropill friability, avoid active component to reach in the coating process, drug migration taking place with coating material generation chemical reaction.Wherein, Hypromellose because of neutral, incompatibility is few, do not influence drug release behavior, ball core weightening finish 2-3% can form a densification, continuous, complete attributes such as clothing film, becomes the most frequently used sealing coat clothing material (" oral sustained-release preparation " Tang Xing People's Health Publisher).
Still surfactant is not added at present and improve the report that the also further coating of micropill processing trait prepares the diabecron sustained-release micropill in the micropill prescription.
Summary of the invention:
The slow-release micro-pill that the purpose of this invention is to provide a kind of hydrochloric metformin.
Another object of the present invention provides the method for preparing of the slow-release micro-pill of above-mentioned hydrochloric metformin.
The objective of the invention is to realize through following technical proposal:
A kind of diabecron sustained-release micropill, this micropill is processed by containing pill core coating extended release coatings, wherein:
The prescription that contains pill core contains following raw material:
Metformin hydrochloride 75-100 weight portion, excipient 0-25 weight portion, sum of the two is 100 weight portions, and perhaps the umber of the two amplifies on year-on-year basis or dwindles, and surfactant is the 0.1-8% of metformin hydrochloride and excipient weight sum, is preferably 2-6%; Wetting agent is the 0.1-30% of metformin hydrochloride and excipient weight sum.
Described slow-release micro-pill, wherein containing the pill core particle size distribution is 0.4～0.8mm.
Described slow-release micro-pill, wherein containing the pill core draw ratio is 1.2: 1 to 1: 1.
Described slow-release micro-pill wherein contains excipient in the pill core and is any one or the multiple inactive solid matter that allow on the pharmaceutics.
Described slow-release micro-pill wherein contains surfactant in the pill core and is selected from the following material one or more: Polyethylene Glycol, castor oil derivatives, poloxamer, Polysorbate, span, polyoxyethylene fatty acid ester, dioctyl sodium sulphosuccinate, sodium lauryl sulphate, mono fatty acid glyceride, mono fatty acid diglyceride, phospholipid.
Described slow-release micro-pill wherein contains wetting agent in the pill core and is selected from the following material one or more: water, ethanol, ethyl acetate, dichloromethane, chloroform, PEG400, gather propanol, glycerol.
Described slow-release micro-pill; The extended release coatings prescription that wherein contains pill core is made up of insoluble polymer, plasticizer, disperse medium; Wherein, insoluble polymer is selected from one or more in the following material: ethyl cellulose, cellulose acetate, hydroxypropyl methyl cellulose phthalate, acrylic resin; Plasticizer is selected from one or more in the following material: glycerol, propylene glycol, Polyethylene Glycol, triacetyl glycerine, citron acid esters, phthalic acid ester, dibutyl sebacate; Disperse medium is selected from one or more in water, the organic solvent.
Described slow-release micro-pill wherein can also comprise the antiplastering aid and/or the porogen of any amount in the extended release coatings prescription, wherein, described antiplastering aid is selected from one or more in Pulvis Talci, magnesium stearate, silicon dioxide, the white titanium pigment; Described porogen is selected from one or more in the following material: soluble small molecular material such as sucrose, salt, water-soluble high-molecular material such as Polyethylene Glycol, polyvidone, hypromellose, hyprolose.
Described slow-release micro-pill, wherein the insoluble polymer consumption is the 5%-50% that contains pill core weight in the extended release coatings prescription, preferred 10%-35%, more preferably 15%-30%; Plasticizer is 0～40% of an insoluble polymer consumption, and antiplastering aid is 0～50% of an insoluble polymer consumption, and porogen is 0～40% of an insoluble polymer consumption, and all the other are disperse medium.
Described slow-release micro-pill; This contain pill core and the extended release coatings that coated between can also add the sealing coat material of buffer action; Wherein, Described sealing coat material is selected from one or more in the following material: water-soluble high-molecular material such as hyprolose, hypromellose, polyvidone, Polyethylene Glycol, preferred hypromellose; Wherein, the consumption of sealing coat material is the 2-3% that contains pill core weight.
The method for preparing of described slow-release micro-pill; This method employing is extruded the spheronization preparation and is contained pill core; Perhaps further will contain pill core and apply the sealing coat material, again with the solution of extended release coatings or dispersion to having applied or the pill core that contains of uncoated sealing coat material carries out spray coating.
Described method for preparing, wherein adopt extrude the spheronization preparation when containing pill core the extruder sieve diameter be 0.1～1.5mm, preferred 0.6mm.
In the present invention, surfactant does not have special qualification so long as have the material of surface activity ability and get final product, preferred high HLB surfactant, and for example the HLB value is 8-20, preferred HLB12-16.
In addition; Surfactant of the present invention can be for having the surfactant of hydrocarbon chain; Hydrocarbon chain can be straight chain, side chain, ring-type; There is not special qualification, for example adducible nonionic surfactant, ionic surfactant with hydrocarbon chain, natural or synthetic surfactant all can.
In addition, surfactant of the present invention is preferably the carbon number of hydrocarbon chain more than 4, more preferably more than 6, more preferably at the surfactant more than 8, and the carbon number of preferred especially hydrocarbon chain is more than 10, the surfactant below 20.The example of concrete surfactant such as Polyethylene Glycol, castor oil derivatives, poloxamer, Polysorbate, span, polyoxyethylene fatty acid ester, dioctyl sodium sulphosuccinate or sodium lauryl sulphate, mono fatty acid glyceride, mono fatty acid diglyceride, phospholipid and their mixture, but be not limited to above-mentioned substance.
Among the present invention; Wetting agent so long as the liquid under the normal temperature condition get final product; Do not have special qualification, can be selected from water, ethyl acetate, dichloroethanes, polyalcohols or other solvents that pharmaceutically allows and their mixture, preferred water, more preferably ethanol, more preferably alcohol-water mixture.
Among the present invention; Constituting the surfactant that contains pill core can mix with other solid matters; Also can add in the wetting agent; Particularly when surfactant is in a liquid state at ambient temperature, preferred mode is that surfactant is added in the wetting agent behind the mix homogeneously, mixes with his solid matter again.
Among the present invention, excipient be allow on the pharmaceutics any one or multiplely have an excipient of extruding round as a ball characteristic, normally inactive solid matter, one or more in the preferred following excipient:
Cellulose and cellulose derivative, for example microcrystalline Cellulose, methylcellulose, ethyl cellulose, hydroxypropyl cellulose, hydroxypropyl emthylcellulose, hydroxyethyl-cellulose, ethylhydroxyethylcellulose, carboxymethyl cellulose, cellulose acetate-butyrate, Cellacefate ester etc.
Monosaccharide, disaccharidase or polysaccharide; Monosaccharide is glucose, galactose, fructose, amino sugar for example; Disaccharidase is lactose, sucrose etc. for example, polysaccharide for example starch, pregelatinized Starch, alginate, xanthan gum, chondrus ocellatus Holmes polysaccharide, glucosan, hyaluronic acid, chitin, take off acetic acid chitin etc.Other natural polymer, for example albumin, gelatin, arabic gum etc.
Synthetic polymer, for example esters of acrylic acid such as polymethacrylates, polymethylacrylic acid hydroxy methacrylate, polymethyl methacrylate, polymethylacrylic acid hydroxy methacrylate-common methyl methacrylate, carbomer; Polyamide class such as polypropylene phthalein amine, polymethylene diacrylate amine; Polyethers is for gathering dihydroxy benzenes oxygen methylmethane, polyvinyl pyrrolidone, and polyvinyl acetate, polyvinyl alcohol, ethylene oxide and copolymer thereof such as Polyethylene Glycol, polyesters is polylactic acid, polyglycolic acid, polycaprolactone etc.
Inorganic salts, for example calcium carbonate, silicon dioxide, aluminosilicate magnesium sodium, kieselguhr, kaolin, Pulvis Talci etc.
Other material, wax class be Brazil wax, Cera Flava, glucose wax, castor, paraffin etc. for example; The stearic acid esters is glycerol palmityl stearate, glyceryl monostearate, glycerol tristearate, stearyl alcohol etc. for example; Lipid is glyceride, phospholipid etc. for example.
Among the present invention, the morphology parameter that contains pill core is to adopt image analysis technology to measure.Image analysis technology is the two-dimensional silhouette image that contains pill core through shooting; The utilization computer is distinguished the color or the gray scale of each pixel; Thereby identification contains the two-dimensional silhouette of pill core and the two-dimensional silhouette image is calculated, and draws the morphology parameter that contains pill core.
Among the present invention; The morphology parameter that contains the pill core medicament is to utilize the BT1600 image of Baite Instrument Co., Ltd., Dandong to contain mensuration that the pill core analytical system carries out; The morphology parameter of being gathered comprises and contains pill core draw ratio and two kinds of parameters of the comprehensive morphological factor that wherein preferred major diameter is recently described the geometric properties that contains pill core among the present invention.
Among the present invention, the major diameter that contains pill core is 1.5: 1 to 1: 1, and they preferred 1.2: 1 to 1: 1.
Among the present invention, containing the pill core particle size distribution is 0.1mm to 2.5mm, preferred 0.5mm to 0.8mm.
Of the present invention contain pill core through mixed processes, extrude operation, round as a ball operation, drying and letter sorting obtains.
Beneficial effect of the present invention:
The present invention adds surfactant in ball core prescription, adopt to extrude spheronization and prepare the ball core, can access that friability is low, yield is higher, particle diameter is less, any surface finish contain pill core, such ball core is convenient to further processing.The present invention contains pill core and applies extended release coatings and process the diabecron sustained-release micropill to this, and has carried out the bioavailability experiment, proves that preparation of the present invention has quality controllable, stable characteristics external, has the characteristic of slow release in vivo.
Description of drawings
Fig. 1 is the dependency of surfactant weight ratio and the disrumpent feelings ratio of strip in the prescription.
Fig. 2-1,2-2,2-3 are the ball core microphotograpies of embodiment 3.
Fig. 3-1,3-2,3-3 are the ball core microphotograpies of embodiment 4.
Fig. 4-1,4-2,4-3 are the ball core microphotograpies of embodiment 5.
Fig. 5-1,5-2,5-3 are the ball core microphotograpies of embodiment 6.
Fig. 6-1,6-2,6-3 are the ball core microphotograpies of embodiment 7.
Fig. 7-1,7-2,7-3 are the ball core microphotograpies of embodiment 8.
Fig. 8 is that the diabecron sustained-release micropill discharges the line of writing music among the embodiment 3-8.
Fig. 9 is mean plasma concentration-time graph that beasle dog single oral diabecron sustained-release micropill and Tang fall
.
The specific embodiment
Below through embodiment the present invention is done further elaboration.
The embodiment explanation
Capital equipment: wet mixing pelletizer (HLSH2-6, Beijing Aeronautics Research Inst), extruder (E-35A, Chongqing English lattice pharmaceutical machine company limited), spheronizator (R-250, Chongqing English lattice pharmaceutical machine company limited); Fluid bed (DPL-IIA; Chongqing Seiko pharmaceutical machine company limited), electric drying oven with forced convection (DHG-9140A, Shanghai Yiheng Scientific Instruments Co., Ltd); Image particulate analysis (the BT1600 of system; Baite Instrument Co., Ltd., Dandong), slide gauge (Shanghai constant measurer company limited), sub-sieve (commercially available stainless steel sift).
The prescription that contains pill core contains following raw material:
Metformin hydrochloride 75-100 weight portion, excipient 0-25 weight portion, sum of the two is 100 weight portions, and perhaps the umber of the two amplifies on year-on-year basis or dwindles, and surfactant is the 0.1-8% of metformin hydrochloride and excipient weight sum; Wetting agent is the 0.1-30% of metformin hydrochloride and excipient weight sum;
Ball core preparation and device parameter thereof: take by weighing metformin hydrochloride, excipient, surfactant, wetting agent by prescription and put in the wet mixing pelletizer, stir, be mixed and made into even mixed materials; Shift this mixed material to extruder, be pressed into strip; Shift this strip to spheronizator, this strip of rolling becomes to contain pill core; Shift this and contain pill core to electric drying oven with forced convection, be solidified into the exsiccant pill core that contains; Sub-sieve sorts the pill core that contains of aimed dia, promptly gets.Preparation of ball core and device parameter thereof see the following form shown in 1.Apply isolated substance like need and then further this is contained pill core coating isolated substance (promptly wrapping contagion gown).
Table 1: capital equipment parameter
Ball core coating (extended release coatings or contagion gown) and device parameter thereof: get this and applied or the pill core that contains of uncoated isolated substance is put in the fluid bed in right amount; Open blower fan, heat and make the ball core be fluidized; Reach the temperature of charge of setting when the ball core after, open solution feed pump, spray into coating solution when making the ball core reach the prescription weightening finish to require, close feed flow; To coated pill core drying, close heating, blower fan, promptly get.Coating processing apparatus parameter sees the following form shown in 2.
Table 2: coating (extended release coatings or contagion gown) processing apparatus parameter
| Blower fan frequency (HZ) | 20→30 |
| EAT (℃) | 40→55 |
| Temperature of charge (℃) | 30→45 |
| Atomizing pressure (MPa) | 0.1→0.2 |
| Solution feed pump rotating speed (rpm) | 4→10 |
Contain the pill core evaluation index: the draw ratio of choosing (E), the comprehensive morphological factor (eR), contain pill core yield (Yd), friability (Fl) and surface smoothness as containing the pill core quality evaluation index.
Wherein: E=contains pill core major diameter/minor axis (international journal of pharmaceutics146 (1997) 21-29);
ER=surface roughness-[1-(two-dimensional projection's eccentricity/projected length)
2]
-2(pharmacy and clinical research, 2009,17 (5), A.M.Bouwan et al Power Technology146 (2004))
Fl=contains pill core and places spray apparatus at the bottom of the fluid bed, and fluidisation is 15 minutes under the art for coating condition, and sieve removes fine powder, calculates the ratio (Chinese Journal of Pharmaceuticals, 1999,30 (8)) that contains the pill core loss in weight and original weight.
The Yd=target contains pill core weight/formula material gross weight (" novel pharmaceutical formulation and new technique " second edition Lu Bin), and wherein, target contains pill core and adopts the sieve formula letter sorting, sees the following form shown in 3 in concrete particle size distribution interval.
Table 3: particle size distribution is interval
| Hole diameter of sieve (perforated) plate (mm) | 0.8 | 0.6 | 0.4 |
| Contain pill core value diameter (order) | 20-24 | 24-30 | 30-40 |
Surface smoothness: BT1600 image particulate analysis systematic observation contains pill wicking surface form.
Embodiment 1: influence contains the principal element that pill core is shaped
In the present embodiment; Under the situation of selected medicine; Set active component dissolubility (vitamin C (0.2g/ml; Yi Rong), sarpogrelate hydrochloride (0.02g/ml; Slightly dissolve)), the wetting time (min) of excipient (microcrystalline Cellulose), wetting agent (20% ethanol), surfactant (polyoxyethylene sorbitan monoleate), soft material, extrude frequency (HZ), hole diameter of sieve (perforated) plate (mm), round as a ball time (min), baking temperature (℃) wait 9 variablees, the P-B experimental design (N=12) of 2 pseudo-variables (Dummy) is investigated the principal element that influence contains the pill core shaping.Wherein, The amount of active component is that active component accounts for the weight ratio of (active component and excipient sum); The amount of excipient is that excipient accounts for the weight ratio of (active component and excipient sum); The amount of wetting agent is the weight ratio of wetting agent and (active component and excipient sum), and the amount of surfactant is the percentage by weight of surfactant and (active component and excipient sum); Active component and excipient sum are 1.Each variable, level and the experimental result thereof of P-B experimental design see the following form shown in 4.
Each variable, level and the experimental result thereof of table 4:P-B experimental design
Conclusion:
1. the single order regression equation (Final equation terms of coded factors) of draw ratio (E) and each variable is as follows:
E=+1.17-2.500*10
-003* A-0.032*B+2.500*10
-003* C+2.500*10
-003* D-5.833*10
-003* M-0.012*F-9.167*10
-003* G-0.046*H-3.433*10
-003* J, experimental result shows that the major variable that influences draw ratio is surfactant, hole diameter of sieve (perforated) plate and round as a ball time.Wherein, greater than the influence to draw ratio of hole diameter of sieve (perforated) plate and round as a ball time, draw ratio increases along with surfactant, hole diameter of sieve (perforated) plate and round as a ball time lengthening and reducing surfactant, promptly contains pill core and trends towards sphere to the influence of draw ratio.
2. the single order regression equation (Final equation terms of coded factors) of the comprehensive morphological factor (eR) and each variable is as follows:
ER=+0.94-2.500*10
-003* A+0.018*B-8.333*10
-004* C-8.333*10
-004* D+8.333*10
-004* M+2.500*10
-003* F-2.500*10
-003* G+0.019*H+0.011*J; Experimental result shows; The major variable that influences the comprehensive morphological factor is surfactant, hole diameter of sieve (perforated) plate and excipient successively; The comprehensive morphological factor increases and increases along with surfactant, excipient and hole diameter of sieve (perforated) plate, promptly contains pill core and trends towards sphere and smooth surface.
3. the single order regression equation (Final equation terms of coded factors) of yield (Yd) and each variable is as follows:
Yd=+0.79+2.500*10
-003* A+0.013*B-8.333*10
-004* C+4.167*10
-003* D-0.014*M-0.027*F+2.500*10
-003* G+0.021*H+8.333*10
-004* J, experimental result shows, the major variable that influences yield is the round as a ball time, extrude frequency and surfactant and hole diameter of sieve (perforated) plate.Wherein, Yield and round as a ball time, extrude frequency and be contravariant, just be and become with surfactant, hole diameter of sieve (perforated) plate, it is long more promptly to extrude high more, the round as a ball time of frequency, and the yield that then contains pill core is low more; And amount of surfactant, hole diameter of sieve (perforated) plate are big more, and the yield that contains pill core is high more.
4. the single order regression equation (Final equation terms of coded factors) of friability (F1) and each variable is as follows:
F1=+0.013-2.500*10
-004* A+1.750*10
-003* B-4.167*10
-004* C-4.167*10
-004* D+2.500*10
-0 04* M+8.333*10
-005* F-3.083*10
-003* G+8.333*10
-003* H-2.583*10
-003* J, experimental result shows that the major variable that influences friability is wetting agent, excipient and surfactant and hole diameter of sieve (perforated) plate; Wherein, Friability and wetting agent, excipient are contravariant, just are and become with surfactant, hole diameter of sieve (perforated) plate, and promptly wetting agent, figuration dosage are big more, and the friability that contains pill core is more little; And amount of surfactant is bigger, the hole diameter of sieve (perforated) plate is big more, and the friability that contains pill core is high more.
5. to sum up can know; Under selected prescription condition, surfactant has significant effects to draw ratio, the comprehensive morphological factor, yield and the friability that contains pill core, wherein; With the increase of amount of surfactant, the yield sphere property, the surface smoothness that contain pill core increase and the friability attenuating; The dissolubility of active component and baking temperature are not seen tangible influence to the formability that contains pill core.
Embodiment 2: surfactant is to containing the influence of important procedure in the pill core processing
In the present embodiment; Respectively with vitamin C (be prone to dissolve), taurine (dissolving), hydrochloric acid bromine ammonia rope (slightly molten) be active component respectively with microcrystalline Cellulose (excipient); 20% ethanol (wetting agent) is formed basic components; In every kind of basic components, add respectively with (active substance+excipient) percentage by weight be that 0,1,2,3,4,6,7% surfactant (polyoxyethylene sorbitan monoleate) is formed series prescription (1 active component of filling a prescription is that vitamin C, prescription 2 active component are that taurine, prescription 3 active component are hydrochloric acid bromine ammonia rope); According to " method for preparing " and " working procedure parameter " in " embodiment explanation " preparation strip, observe the also shape and the interior yield of unit interval of calculating strip, and this strip dropped to naturally in 1 meter the square plate; Be transferred in the electric drying oven with forced convection it dry behind the jog; With the average disrumpent feelings ratio of the dry strip of slide gauge mensuration equivalent, investigate surfactant to containing the influence of important procedure in the pill core processing, EE and experimental result see the following form; Wherein, disrumpent feelings ratio is that 2-3 interval is doubly seen shown in the table 5.
Table 5: EE and experimental result
Annotate: the amount of active component is that active component accounts for the weight ratio of (active component and excipient sum);
The amount of excipient is that excipient accounts for the weight ratio of (active component and excipient sum);
The amount of wetting agent is the weight ratio of wetting agent and (active component and excipient sum);
The amount of surfactant is the percentage by weight of surfactant and (active component and excipient sum);
Active component and excipient sum are 1.
Conclusion:
1. there is positive correlation in the character of surfactant and strip, and promptly amount of surfactant increases, strip any surface finish and shinny.
2. there are positive correlation in amount of surfactant and strip output, and promptly along with amount of surfactant increases, material is extruded smooth more, and the strip of preparation is also many more in the unit interval.
3. the disrumpent feelings ratio of amount of surfactant and strip is relevant and have three catastrophe point (see figure 1)s: along with amount of surfactant increases, first catastrophe point (A point) appears in disrumpent feelings ratio, disrumpent feelings bigger and variation very little (OA section); Amount of surfactant continue to increase, and is disrumpent feelings than second catastrophe point (B point) occurring, at this moment, and disrumpent feelings ratio descend rapidly (AB section); Along with the continuation increase of amount of surfactant, disrumpent feelings than the 3rd catastrophe point (C point) occurring, disrumpent feelings than changing steady (BC section); Continuing increases dosage of surfactant, and disrumpent feelings ratio begins rapid decline (＞C section) again.
In certain interval (BC section); Though amount of surfactant changes greatly; But the variation of disrumpent feelings ratio is then less relatively and disrumpent feelings ratio is stabilized between the 2-3, and this stable disrumpent feelings ratio helps: 1), working procedure parameter stable and produce continuously and efficient 2), the physical dimension of strip is relatively stable; 3), the mixed material processing characteristics of last operation is relatively stable, 4), guarantee the rolling of back one operation and obtain higher micropill yield.
Contagion gown prescription (by containing pill core 100 weight portions):
3 parts of hypromelloses
0.3 part of Macrogol 4000
50 parts in water
Extended release coatings prescription (contain bag contagion gown contain pill core 100 weight portion meters):
80 parts of 10% Sulisi
aqueous dispersions
Annotate: 10% Sulisi
aqueous dispersion is an Aquacoat.
Preparation technology: shine three batches of " embodiment explanation " and above-mentioned formulation micropills, quality evaluation result sees the following form shown in 6, and the micropill character is seen Fig. 2-1,2-2,2-3.
Table 6: ball core quality evaluation
| Evaluation index/batch | The 1st batch | The 2nd batch | The 3rd batch |
| Draw ratio (E) | 1.1 | 1.07 | 1.12 |
| The comprehensive morphological factor (eR) | 0.96 | 0.98 | 0.94 |
| Friability (Fl) | 0.008 | 0.01 | 0.005 |
| Yield (Yd) | 0.86 | 0.82 | 0.86 |
| Surface smoothness | Any surface finish | Any surface finish | Any surface finish |
Contagion gown prescription (by containing pill core 100 weight portions):
3 parts of hypromelloses
0.3 part of Macrogol 4000
50 parts in water
Extended release coatings prescription (contain bag contagion gown contain pill core 100 weight portion meters):
100 parts of 10% Sulisi
aqueous dispersions
4 parts of hypromelloses
Annotate: 10% Sulisi
aqueous dispersion is an Aquacoat.
Preparation technology: shine three batches of " embodiment explanation " and above-mentioned formulation micropills, quality evaluation result sees the following form shown in 7, and the micropill character is seen Fig. 3-1,3-2,3-3.
Table 7: ball core quality evaluation
| Evaluation index/batch | The 1st batch | The 2nd batch | The 3rd batch |
| Draw ratio (E) | 1.08 | 1.07 | 1.1 |
| The comprehensive morphological factor (eR) | 0.97 | 0.96 | 0.95 |
| Friability (Fl) | 0.009 | 0.01 | 0.007 |
| Yield (Yd) | 0.81 | 0.83 | 0.86 |
| Surface smoothness | Any surface finish | Any surface finish | Any surface finish |
Contagion gown prescription (by containing pill core 100 weight portions):
3 parts of hypromelloses
0.3 part of Macrogol 4000
50 parts in water
Extended release coatings prescription (contain bag contagion gown contain pill core 100 weight portion meters):
80 parts of 10% You Teqi
aqueous dispersions
Annotate: You Teqi
aqueous dispersion is EUDRAGIT NE 30 D EUDRAGIT NE 30D (2: a 1) aqueous dispersion.
Preparation technology: shine three batches of " embodiment explanation " and above-mentioned formulation micropills, quality evaluation result sees the following form shown in 8, and the micropill character is seen Fig. 4-1,4-2,4-3.
Table 8: ball core quality evaluation
| Evaluation index/batch | The 1st batch | The 2nd batch | The 3rd batch |
| Draw ratio (E) | 1.04 | 1.08 | 1.08 |
| The comprehensive morphological factor (eR) | 0.98 | 0.97 | 0.96 |
| Friability (Fl) | 0.011 | 0.009 | 0.007 |
| Yield (Yd) | 0.81 | 0.84 | 0.85 |
| Surface smoothness | Any surface finish | Any surface finish | Any surface finish |
Contagion gown prescription (by containing pill core 100 weight portions):
3 parts of hypromelloses
0.3 part of Macrogol 4000
50 parts in water
Extended release coatings prescription (contain bag contagion gown contain pill core 100 weight portion meters):
100 parts of 10% You Teqi
aqueous dispersions
4 parts of hypromelloses
Annotate: You Teqi
aqueous dispersion is EUDRAGIT NE 30 D EUDRAGIT NE 30D (2: a 1) aqueous dispersion.
Preparation technology: shine three batches of " embodiment explanation " and above-mentioned formulation micropills, quality evaluation result sees the following form shown in 9, and the micropill character is seen Fig. 5-1,5-2,5-3.
Table 9: ball core quality evaluation
| Evaluation index/batch | The 1st batch | The 2nd batch | The 3rd batch |
| Draw ratio (E) | 1.07 | 1.1 | 1.08 |
| The comprehensive morphological factor (eR) | 0.97 | 0.95 | 0.98 |
| Friability (Fl) | 0.009 | 0.006 | 0.009 |
| Yield (Yd) | 0.82 | 0.84 | 0.84 |
| Surface smoothness | Any surface finish | Any surface finish | Any surface finish |
Contagion gown prescription (by containing pill core 100 weight portions):
3 parts of hypromelloses
0.3 part of Macrogol 4000
50 parts in water
Extended release coatings prescription (contain bag contagion gown contain pill core 100 weight portion meters):
8 parts of ethyl celluloses
92 parts of 95% ethanol
Preparation technology: shine three batches of " embodiment explanation " and above-mentioned formulation micropills, quality evaluation result sees the following form shown in 10, and the micropill character is seen Fig. 6-1,6-2,6-3.
Table 10: ball core quality evaluation
| Evaluation index/batch | The 1st batch | The 2nd batch | The 3rd batch |
| Draw ratio (E) | 1.11 | 1.09 | 1.08 |
| The comprehensive morphological factor (eR) | 0.95 | 0.96 | 0.96 |
| Friability (Fl) | 0.005 | 0.007 | 0.006 |
| Yield (Yd) | 0.86 | 0.03 | 0.82 |
| Surface smoothness | Any surface finish | Any surface finish | Any surface finish |
Contagion gown prescription (by containing pill core 100 weight portions):
3 parts of hypromelloses
0.3 part of Macrogol 4000
50 parts in water
Extended release coatings prescription (contain bag contagion gown contain pill core 100 weight portion meters):
10 parts of ethyl celluloses
90 parts of 95% ethanol
4 parts of hypromelloses
Preparation technology: shine three batches of " embodiment explanation " and above-mentioned formulation micropills, quality evaluation result sees the following form shown in 11, and the micropill character is seen Fig. 7-1,7-2,7-3.
Table 11: ball core quality evaluation
| Evaluation index/batch | The 1st batch | The 2nd batch | The 3rd batch |
| Draw ratio (E) | 1.08 | 1.09 | 1.05 |
| The comprehensive morphological factor (eR) | 0.96 | 0.97 | 0.97 |
| Friability (Fl) | 0.007 | 0.009 | 0.011 |
| Yield (Yd) | 0.83 | 0.85 | 0.82 |
| Surface smoothness | Any surface finish | Any surface finish | Any surface finish |
Embodiment 9
" dissolution method " carry out diabecron sustained-release micropill release degree to " embodiment 3-8 " and detect by first method according to Chinese Pharmacopoeia (version was two ones in 2010) appendix XD " drug release determination method ", XC; Its release degree result such as following table 12, its release line of writing music is seen shown in Figure 8.
Table 12: diabecron sustained-release micropill release degree (%)
According to " embodiment 6 " prescription and method; Preparation diabecron sustained-release micropill (; According to " pharmacological experimental methodology "--" bioavailability and equivalence evaluation " (Xu Shuyun, People's Health Publisher, the third edition) carried out pharmacokinetic studies in the beasle dog single oral dose body.
Claims (12)
1. diabecron sustained-release micropill is characterized in that this micropill coats extended release coatings and processes by containing pill core, wherein:
The prescription that contains pill core contains following raw material:
Metformin hydrochloride 75-100 weight portion, excipient 0-25 weight portion, sum of the two is 100 weight portions, and perhaps the umber of the two amplifies on year-on-year basis or dwindles, and surfactant is the 0.1-8% of metformin hydrochloride and excipient weight sum, is preferably 2-6%; Wetting agent is the 0.1-30% of metformin hydrochloride and excipient weight sum.
2. slow-release micro-pill according to claim 1 is characterized in that it contains the pill core particle size distribution is 0.4～0.8mm.
3. slow-release micro-pill according to claim 1 is characterized in that it contains the pill core draw ratio is 1.2: 1 to 1: 1.
4. slow-release micro-pill according to claim 1 is characterized in that containing excipient in the pill core and is any one or the multiple inactive solid matter that allow on the pharmaceutics.
5. slow-release micro-pill according to claim 1 is characterized in that containing surfactant in the pill core and is selected from the following material one or more: Polyethylene Glycol, castor oil derivatives, poloxamer, Polysorbate, span, polyoxyethylene fatty acid ester, dioctyl sodium sulphosuccinate, sodium lauryl sulphate, mono fatty acid glyceride, mono fatty acid diglyceride, phospholipid.
6. slow-release micro-pill according to claim 1 is characterized in that containing wetting agent in the pill core and is selected from the following material one or more: water, ethanol, ethyl acetate, dichloromethane, chloroform, PEG400, gather propanol, glycerol.
7. slow-release micro-pill according to claim 1; It is characterized in that the extended release coatings prescription that contains pill core is made up of insoluble polymer, plasticizer, disperse medium; Wherein, insoluble polymer is selected from one or more in the following material: ethyl cellulose, cellulose acetate, hydroxypropyl methyl cellulose phthalate, acrylic resin; Plasticizer is selected from one or more in the following material: glycerol, propylene glycol, Polyethylene Glycol, triacetyl glycerine, citron acid esters, phthalic acid ester, dibutyl sebacate; Disperse medium is selected from one or more in water, the organic solvent.
8. slow-release micro-pill according to claim 1 is characterized in that can also comprising in the extended release coatings prescription antiplastering aid and/or the porogen of any amount, and wherein, described antiplastering aid is selected from one or more in Pulvis Talci, magnesium stearate, silicon dioxide, the white titanium pigment; Described porogen is selected from one or more in the following material: soluble small molecular material such as sucrose, salt, water-soluble high-molecular material such as Polyethylene Glycol, polyvidone, hypromellose, hyprolose.
9. slow-release micro-pill according to claim 1 is characterized in that the insoluble polymer consumption is the 5%-50% that contains pill core weight in its extended release coatings prescription, preferred 10%-35%, more preferably 15%-30%; Plasticizer is 0～40% of an insoluble polymer consumption, and antiplastering aid is 0～50% of an insoluble polymer consumption, and porogen is 0～40% of an insoluble polymer consumption, and all the other are disperse medium.
10. slow-release micro-pill according to claim 1; It is characterized in that this contain pill core and the extended release coatings that coated between can also add the sealing coat material of buffer action; Wherein, Described sealing coat material is selected from one or more in the following material: water-soluble high-molecular material such as hyprolose, hypromellose, polyvidone, Polyethylene Glycol, preferred hypromellose; Wherein, the consumption of sealing coat material is the 2-3% that contains pill core weight.
11. method for preparing according to claim 1 or 10 described slow-release micro-pill; It is characterized in that adopting and extrude the spheronization preparation and contain pill core; Perhaps further will contain pill core and apply the sealing coat material, again with the solution of extended release coatings or dispersion to having applied or the pill core that contains of uncoated sealing coat material carries out spray coating.
12. method for preparing according to claim 11, it is characterized in that adopting extrude the spheronization preparation when containing pill core the extruder sieve diameter be 0.1～1.5mm, preferred 0.6mm.
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| CN103040761A (en) * | 2012-12-24 | 2013-04-17 | 广州医药研究总院 | Novel metformin hydrochloride sustained release pellets and preparation method thereof |
| CN103417496A (en) * | 2013-08-26 | 2013-12-04 | 中国人民解放军第150中心医院 | Method for preparing metformin hydrochloride controlled-release pellet preparation |
| CN104434846A (en) * | 2014-11-17 | 2015-03-25 | 中国药科大学 | Metformin hydrochloride enteric-coated sustained-release pellet and preparation method thereof |
| CN110801443A (en) * | 2019-12-03 | 2020-02-18 | 仁和堂药业有限公司 | Metformin hydrochloride sustained-release preparation and quality detection method thereof |
| CN111110648A (en) * | 2020-01-13 | 2020-05-08 | 新发药业有限公司 | Metformin hydrochloride controlled release tablet |
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| CN103040761A (en) * | 2012-12-24 | 2013-04-17 | 广州医药研究总院 | Novel metformin hydrochloride sustained release pellets and preparation method thereof |
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| CN110801443A (en) * | 2019-12-03 | 2020-02-18 | 仁和堂药业有限公司 | Metformin hydrochloride sustained-release preparation and quality detection method thereof |
| CN111110648A (en) * | 2020-01-13 | 2020-05-08 | 新发药业有限公司 | Metformin hydrochloride controlled release tablet |
| CN112972411A (en) * | 2021-04-09 | 2021-06-18 | 迪沙药业集团有限公司 | Metformin hydrochloride sustained-release tablet composition |
| CN112972411B (en) * | 2021-04-09 | 2022-05-31 | 迪沙药业集团有限公司 | Metformin hydrochloride sustained-release tablet composition |
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