JP2011068683A - Composition prevented from reduction in viscosity - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for stably maintaining a viscosity of a composition that is applied to a viscous membrane and contains a cellulose-based thickening agent, and a stably maintained composition. <P>SOLUTION: Incorporation of a specific vegetable oil suppresses reduction of a viscosity of a composition composed of a cellulose-based thickening agent and a nonionic surfactant to maintain the viscosity stably over a long period of time. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a composition for applying to mucosa in which the viscosity of a composition containing a cellulosic thickener is stably maintained. The present invention also relates to a method for stably maintaining the viscosity of a composition containing a cellulosic thickener. Furthermore, this invention relates to the method of improving the usability | use_condition of the composition containing a cellulosic thickener.

  In a composition applied to mucous membranes applied to ocular mucosa, nasal mucosa, intraoral mucosa, etc., it is necessary to improve the retention of the composition in the mucous membrane in order to enhance bioavailability. Then, the formulation design which mix | blended cellulose type thickeners, such as methylcellulose and a hydroxypropyl methylcellulose, made the composition viscosity was improved, and the retention was improved.

  In eye tissue, a simple treatment to relieve symptoms by administering artificial tears to dry eye, in other words, keratoconjunctival epithelial disorder caused by qualitative or quantitative abnormalities of tears There is a way. By adding a thickening agent such as methylcellulose to the artificial tears-type eye drops used for the treatment of dry eye, it is possible to expect a dry eye treatment effect with improvement in conjunctival sac retention.

Useful effects such as the effect of improving mucosal retention and the effect of alleviating dry eye symptoms are mainly attributed to the viscosity imparted to the composition by containing the above-mentioned cellulosic thickener. Therefore, in the composition applied to mucosa, it is important to set an appropriate viscosity and to maintain a desired set viscosity stably for a long period of time.

  By the way, in order to increase the stability and solubility of medicinal components and the feeling of use (functionality), a surfactant may be added to the composition applied to mucous membranes such as eye drops and eye wash. It has been found that the viscosity of the composition containing the cellulosic thickener decreases with time in the presence of a nonionic surfactant. The decrease in viscosity affects the feeling in use and may reduce the effect of the thickening agent.

  To date, polymers of bioadhesives or viscosity enhancing agents such as poly (acrylic acids), acrylate copolymers, cross-linked polyacrylic acids, cellulose, cellulose derivatives, dextran, hyaluronic acid Decomposition is facilitated by metal ions in solution or slurry, but free metal ions can be reduced by using phosphonic acid or phosphonic acid ester, a chelating agent that has a greater ability to complex with free ions than EDTA. It has been found that the viscosity of the polymer composition can be reduced to reduce the rate of disintegration, degradation or other inactivation (US Pat.

  Moreover, it has been found that viscosity reduction due to light or heat of thickening agents such as cellulose derivatives and polyvinyl compounds can be suppressed by blending xanthines and nonionic surfactants or chelating agents (Patent Literature). 2). However, none of the literature has known a method for suppressing a decrease in viscosity when a cellulosic thickener and a surfactant are used in combination.

  By the way, when a composition containing a thickening agent is applied to the eyes, depending on the viscosity of the applied composition, it may feel sticky or may feel resistance in blinking. In addition, the sensation of use may be affected, for example, the field of view may be unclear for a while after application. Therefore, it is important not only to suppress the decrease in viscosity but also to improve the feeling of use when applying the composition to the mucosa at a desired viscosity.

Japanese National Patent Publication No. 11-510480 JP 2003-201241 A

  Therefore, there has been a demand for a method for maintaining the viscosity of the composition imparted by the cellulosic thickener for a long time even in the presence of a nonionic surfactant. Moreover, the method of improving the usability | use_condition of the composition containing a cellulose thickener was calculated | required.

  As a result of intensive investigations to achieve the above object, the present inventors have found that a) a cellulose-based thickener and b) a nonionic surfactant, c) a nonionic surfactant. By containing castor oil in an amount of 0.001 part by weight or more and less than 2 parts by weight with respect to 1 part by weight, the viscosity of the composition applied to mucosa can be stably maintained at a predetermined viscosity, and the usability can be improved. As a result, the present invention has been completed.

The present invention has been developed based on such knowledge.
That is, the present invention is a composition listed in the following (1) to (8):
(1) i) Cellulosic thickener, ii) nonionic surfactant, and iii) 0.001 part by weight or more and less than 2 parts by weight of castor oil relative to 1 part by weight of the nonionic surfactant A composition for applying to mucosa,
(2) The composition applied to mucosa according to (1), wherein the viscosity at 20 ° C. is 2 mPa · s or more and 100,000 mPa · s or less,
(3) The mucosal application according to (1) or (2), wherein the cellulosic thickener is at least one selected from methylcellulose, hydroxyethylcellulose, hydroxypropylmethylcellulose, hydroxypropylcellulose, carboxymethylcellulose, or a salt thereof. Composition,
(4) The nonionic surfactant is a nonionic surfactant selected from a polyoxyethylene-polyoxypropylene block copolymer, a polyoxyethylene sorbitan fatty acid ester or a polyoxyethylene hydrogenated castor oil (1 ) To (3), the composition for applying to mucosa,
(5) The composition for applying to mucosa according to any one of (1) to (4), which is an eye drop, an eye wash, a contact lens mounting solution, and a nasal drop,
(6) The composition for applying to mucosa according to any one of (1) to (5), wherein the pH is 4.0 to 10.0.
(7) The composition for applying to mucosa according to any one of (1) to (6), further comprising an ethylenediamineacetic acid derivative or a salt thereof,
(8) The composition for applying to mucosa according to any one of (1) to (7), further comprising one or more compounds selected from menthol, camphor or borneol,
Furthermore, the present invention is the method described in the following (9) to (10):
(9) Composition by adding 0.001 part by weight or more and less than 2 parts by weight of castor oil to 1 part by weight of the nonionic surfactant together with the cellulose-based thickening agent and the nonionic surfactant. A method for stabilizing the viscosity of a product,
(10) Composition by blending castor oil in an amount of 0.001 part by weight or more and less than 2 parts by weight with respect to 1 part by weight of the nonionic surfactant together with the cellulose-based thickening agent and the nonionic surfactant. How to improve the feeling of use of things.
In the present specification, unless otherwise specified,% means w / v%. Further, in the present specification, the contact lens is meant to include all types of contact lenses such as hard, oxygen permeable hard, soft, and color.

  In this invention, the fall of the viscosity of a composition can be prevented by containing a specific vegetable oil in the composition containing a cellulose thickening agent and a nonionic surfactant. The mucosa-applied composition of the present invention having such effects includes eye drops, eye washes, eye ointments, contact lens mounting liquids, contact lens preparations (cleaning liquids, storage liquids, bactericidal liquids, multipurpose solutions, etc.) It is useful as an ophthalmic composition such as an ophthalmic composition and a nasal drop.

It is a figure which shows the method of the measurement by the conical one plate type rotational viscometer used in the test example.

  The cellulose thickening agent in the present invention is a cellulose derivative obtained by replacing the hydroxyl group of cellulose with a polar group or a nonpolar group, and is a compound capable of imparting viscosity to an aqueous composition. Examples of the functional group that substitutes the hydroxyl group of cellulose include a methoxyl group, an ethoxyl group, a hydroxyethoxyl group, and a hydroxypropoxyl group. Examples of cellulose derivatives include methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, and pharmacologically acceptable salts thereof. Among these, at least one selected from methyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, or a salt thereof is preferable. Here, examples of the pharmacologically acceptable salt include alkali metals such as sodium and potassium, alkaline earth metals such as calcium and magnesium, and salts with metals such as aluminum.

  In addition, the cellulose thickening agent used in the present invention is not limited in the degree of substitution of the substituent or the molecular weight, but for example, the weight average molecular weight is 50,000 to 1,000,000, preferably 10,000 to 500,000, and more preferably. Can be about 10,000 to 100,000. Moreover, a commercially available thing can be used for these cellulose type thickening agents, You may use these compounds combining 1 type (s) or 2 or more types.

  The amount of cellulosic thickener used for the composition applied to mucosa can be set as appropriate according to the desired viscosity to be applied to the composition, and varies depending on the molecular weight and type, but cannot generally be specified. The concentration of the thickening agent in the composition is 0.001 to 10%, preferably 0.005 to 5%, more preferably 0.01 to 2%, and particularly preferably about 0.1 to 2%. be able to.

  The nonionic surfactant in the present invention decreases the viscosity of the composition applied to mucosa by blending with a cellulosic thickener, but suppresses the decrease in viscosity of the composition applied to mucosa by blending with a specific vegetable oil. it can. As such a nonionic surfactant, those which can be usually used by those skilled in the art for a composition applied to mucosa can be used. For example, polyoxyethylene (hereinafter also referred to as POE) which is a nonionic surfactant. A polyoxypropylene (hereinafter also referred to as POP) block copolymer (for example, poloxamer 407, poloxamer 235, poloxamer 188, etc.); a POE-POP block copolymer adduct of ethylenediamine such as poloxamine; POE (20) sorbitan monolaurate (20) POE sorbitan fatty acid esters such as polysorbate 20), monooleic acid POE (20) sorbitan (polysorbate 80), POE sorbitan monostearate (polysorbate 60), POE sorbitan tristearate (polysorbate 65); POE hydrogenated castor oil 5, POE cured chick POE hardened castor oils such as Pear oil 10, POE hardened castor oil 20, POE hardened castor oil 50, POE hardened castor oil 50, POE hardened castor oil 60, POE hardened castor oil 100; POE such as POE (9) lauryl ether POE (20) POP (4) POE / POP alkyl ethers such as cetyl ether; POE alkyl phenyl ethers such as POE (10) nonyl phenyl ether. The numbers in parentheses indicate the number of added moles.

  Among them, nonionic surfactants selected from polyoxyethylene-polyoxypropylene block copolymers, POE sorbitan fatty acid esters or POE hydrogenated castor oils are preferable, and polyoxyethylene-polyoxypropylene blocks are particularly preferable. Copolymer, polysorbate 80, polyoxyethylene hydrogenated castor oil 60.

  The amount of the nonionic surfactant used in the ophthalmic composition varies depending on the type of the surfactant and the like, and thus cannot be specified unconditionally, but is usually 0.0001 to 5%, preferably 0.001 to 1%. More preferably, it is used at about 0.001 to 0.8%, particularly preferably about 0.005 to 0.5%.

  The mucosa-applied composition of the present invention is characterized in that it contains 0.001 part by weight or more and less than 2 parts by weight of castor oil with respect to 1 part by weight of the nonionic surfactant. The content may be from 01 parts by weight to less than 2 parts by weight, more preferably from 0.01 parts by weight to 1.5 parts by weight, particularly preferably from 0.01 parts by weight to 1 part by weight. When the castor oil is contained in an amount of 0.001 part by weight or less with respect to 1 part by weight of the nonionic surfactant, it is difficult to suppress a decrease in viscosity, and when it is contained in an amount of 2 parts by weight or more, the preparation tends to be unstable. is there.

The castor oil in the present invention refers to a vegetable oil obtained from the seed of a plant belonging to the genus Euphorbiaceae (Ricinus communis Linne (Euphorbiaceae), etc.). It can be obtained from seeds using known extraction methods and known purification methods. For example, castor oil listed in the Japanese Pharmacopoeia (see 14th revision Japanese Pharmacopoeia Description D-972 to 973) After the oil cake is centrifuged, it can be obtained by decolorization with activated clay, followed by steam distillation at high temperature (200 to 220 ° C.) and high vacuum, and deoxidation and deodorization. In addition, those that can be used by those skilled in the art for the composition applied to mucosa can be used, and commercially available products can also be used.
The amount of castor oil of the present invention used in the composition for applying to mucosa is usually less than 0.000001 to 10%, preferably less than 0.0001 to 10%, more preferably 0.0001 to 2%, and particularly preferably 0. .0005 to about 1%. In the case of an ophthalmic composition, about 0.00001 to 1% is more preferable, and about 0.0001 to 0.8% is particularly preferable.

  The effect of suppressing the decrease in viscosity by the sesame oil of the present invention becomes more prominent when an ethylenediamineacetic acid derivative or a salt thereof is blended in the composition applied to mucosa. In the present invention, a cellulosic thickener and a nonionic surfactant are contained, but the viscosity is stably maintained by containing a specific vegetable oil, and further, an ethylenediamineacetic acid derivative or a salt thereof is added. By containing, a mucosa-applied composition with further improved viscosity stability can be obtained.

  Examples of such ethylenediamineacetic acid derivatives or salts thereof include edetic acid (ethylenediaminetetraacetic acid, EDTA), ethylenediaminediacetic acid (EDDA), diethylenetriaminepentaacetic acid (DTPA), and N- (2-hydroxyethyl) ethylenediaminetriacetic acid (HEDTA). Etc. can be exemplified. These may be used alone or in combination, and may be used as a pharmacologically or physiologically acceptable salt (for example, sodium ethylenediaminetetraacetate). Among them, ethylenediaminetetraacetic acid or a salt thereof is preferable, for example, ethylenediaminetetraacetic acid disodium, ethylenediaminetetraacetic acid disodium dihydrate (hereinafter also referred to as sodium edetate).

  The amount of the ethylenediamineacetic acid derivative or salt thereof used in the composition applied to the mucosa varies depending on the molecular weight, type, etc., and thus cannot be specified unconditionally, but the concentration in the composition is 0.0001 to 1%, preferably 0.001. The amount is about 0.5 to 0.5%, particularly preferably about 0.005 to 0.3%.

  When one or more compounds selected from menthol, camphor or borneol are further added to the composition for applying to mucosa of the present invention, the effect of improving the feeling of use becomes more remarkable. These compounds may be d-form, l-form or dl-form. Moreover, you may use essential oils, such as peppermint oil and eucalyptus oil.

  The use amount of one or more compounds selected from menthol, camphor or borneol in the composition for applying to mucosa of the present invention is preferably 0.0001 to 5%, and preferably 0.001 to 2% as the total amount of the compounds. Is more preferable, 0.005 to 1% is more preferable, and 0.007 to 0.8% is particularly preferable.

  In the present invention, the composition for applying to mucosa containing a cellulosic thickener can be initially set to an appropriate viscosity to obtain a desired effect, and the set viscosity can be stably maintained over a long period of time. The viscosity of the ophthalmic composition has a great effect on the comfort (use feeling), drug retention, and treatment of diseases such as dry eye when applied to the ocular mucosa. It is important that the designed viscosity is kept stable over the long term. When setting an appropriate viscosity, it is usually designed to be 1.2 mPa · s or higher, for example, an ophthalmic composition with a viscosity at 20 ° C. maintained at 2 mPa · s or higher, usually 2 to 300 mPa · s, preferably Can be designed to be 2 to 200 mPa · s, particularly preferably 5 to 100 mPa · s, and more preferably about 10 to 80 mPa · s. If the viscosity is 2 mPa · s or less, the useful effect of the cellulosic thickener cannot be sufficiently exerted, and if it is 300 mPa · s or more, the stickiness is large and management of the production process tends to be difficult. The nasal composition is preferably designed with a viscosity at 20 ° C. of 2 to 100,000 mPa · s or more, usually 2 to 100,000 mPa · s, preferably 50 to 10,000 mPa · s, particularly Preferably, it can design to about 100-5000 mPa * s.

  The use application of the mucosa of the present invention is not specified as long as it uses the effects of the invention, and can be used in various fields such as pharmaceuticals, quasi drugs, and miscellaneous goods. For example, eye drops (including eye drops that can be used while wearing hard or soft contact lenses, also referred to as eye drops), eye wash (hard or soft contact lenses should also be used while wearing Eye ointment, contact lens mounting solution, contact lens preparation (cleaning solution, preservative solution, bactericidal solution, multi-purpose solution, etc.), nasal drops and the like. Among these, it is useful for eye drops, eye wash, contact lens mounting liquid, and nasal drops.

The mucosa-applied composition of the present invention may contain various components (including pharmacologically active components and physiologically active components) in combination as long as the effects of the present invention are not hindered. The type of such components is not particularly limited, and examples thereof include, for example, a decongestant component, an eye regulator component, an anti-inflammatory component or an astringent component, an antihistamine component or an antiallergic component, vitamins, amino acids, and antibacterial agents. Examples include components, bactericidal components, saccharides, polysaccharides or derivatives thereof, cellulose or derivatives or salts thereof, water-soluble polymers other than those described above, local anesthetic components, steroid components, and glaucoma therapeutic agents. Examples of suitable components in the present invention include the following components.
Decongestant: For example, α-adrenergic agonists, specifically epinephrine, epinephrine hydrochloride, ephedrine hydrochloride, oxymetazoline hydrochloride, tetrahydrozoline hydrochloride, naphazoline hydrochloride, phenylephrine hydrochloride, methylephedrine hydrochloride, epinephrine hydrogen tartrate, naphazoline nitrate. These may be d-form, l-form or dl-form.
Eye muscle modulator component: For example, cholinesterase inhibitor having an active center similar to acetylcholine, specifically, neostigmine methyl sulfate, tropicamide, atropine sulfate helenien, and the like.
Anti-inflammatory component or astringent component: for example, zinc sulfate, zinc lactate, allantoin, epsilon-aminocaproic acid, indomethacin, lysozyme chloride, silver nitrate, pranoprofen, sodium azulenesulfonate, dipotassium glycyrrhizinate, diclofenac sodium, bromfena Sodium chloride, berberine chloride, berberine sulfate, etc.
Antihistamine component or antiallergic agent component: for example, acitazanolast, amlexanox, ibudilast, tranilast, diphenhydramine hydrochloride, levocabastine hydrochloride, ketotifen fumarate, sodium cromoglycate, pemirolast potassium, chlorpheniramine maleate and the like.
Vitamins: for example, retinol acetate, retinol palmitate, pyridoxine hydrochloride, flavin adenine dinucleotide sodium, pyridoxal phosphate, cyanocobalamin, panthenol, calcium pantothenate, sodium pantothenate, ascorbic acid, tocopherol acetate and the like.
Amino acids: For example, aminoethylsulfonic acid (taurine), glutamic acid, creatinine, potassium aspartate, magnesium aspartate, magnesium / aspartate mixture, sodium glutamate, sodium chondroitin sulfate and the like.
These may be d-form, l-form or dl-form.
Antibacterial component or bactericidal component: For example, alkylpolyaminoethylglycine, sulfamethoxazole, sulfisoxazole, sulfamethoxazole sodium, sulfisomidine sodium, berberine sulfate, berberine chloride, boro Acid, etc.
Sugars: for example, monosaccharides, disaccharides, specifically glucose, trehalose and the like.
Polysaccharides or derivatives thereof: for example, sodium hyaluronate, sodium chondroitin sulfate, etc.
Cellulose or a derivative thereof or a salt thereof: for example, hydroxyethyl cellulose, hydroxypropylmethyl cellulose, methyl cellulose and the like.
Water-soluble polymers other than those described above: polyvinyl alcohol (completely or partially saponified product), polyvinylpyrrolidone, and the like.
Local anesthetic components: for example, oxybuprocaine hydrochloride, cocaine hydrochloride, cornecaine hydrochloride, dibucaine hydrochloride, tetracaine hydrochloride, diethylaminoethyl parabutylaminobenzoate, piperocaine hydrochloride, procaine hydrochloride, proparacaine hydrochloride, hexothiocaine hydrochloride, lidocaine hydrochloride.
Steroid component: for example, dexamethasone, hydrocortisone, fluorometholone, prednisolone, methylprednisolone, hydroxymesterone, hydrocortisone caproate, prednisolone caproate, cortisone acetate, hydrocortisone acetate, prednisolone acetate, sodium dexamethasone metasulfobenzoate, sodium dexamethasone sulfate Dexamethasone sodium phosphate, triamcinolone acetonide, betamethasone sodium phosphate, dexamethasone sodium metasulfobenzoate, methylprednisolone and the like.

  The compounding amounts of these components in the mucosa-applied composition are appropriately selected according to the type of preparation, the type of active ingredient, and the like, and the compounding amounts of various components are known in the art. For example, it can be selected from the range of about 0.0001 to 30%, preferably about 0.001 to 10% with respect to the whole preparation. More specifically, the content of each component is, for example, as follows for the ophthalmic composition.

Decongestant component (vasoconstrictor or sympathomimetic drug): For example, 0.0001 to 0.5%, preferably 0.0005 to 0.3%, more preferably 0.001 to 0.1%.
Eye muscle modulator component: For example, 0.0001 to 0.5%, preferably 0.0005 to 0.1%, more preferably 0.0005 to 0.01%.
Anti-inflammatory component or astringent component: for example, 0.0001-10%, preferably 0.0001-5%.
Antihistamine component or antiallergic agent component: for example, 0.0001 to 10%, preferably 0.001 to 5%.
Vitamins: For example, 0.0001 to 1%, preferably 0.0001 to 0.5%.
Amino acids: For example, 0.0001 to 10%, preferably 0.001 to 3%.
Antibacterial component or bactericidal component: For example, 0.00001 to 10%, preferably 0.0001 to 10%.
Sugar: For example, 0.0001 to 5%, preferably 0.001 to 5%, more preferably 0.01 to 2%.
Polysaccharides or derivatives thereof: for example, 0.0001 to 2%, preferably 0.01 to 2%, more preferably 0.01 to 1%.
Cellulose or a derivative thereof or a salt thereof: For example, 0.001 to 5%, preferably 0.01 to 1%.
Water-soluble polymers other than those described above: For example, 0.001 to 10%, preferably 0.001 to 5%, and more preferably 0.01 to 3%.
Local anesthetic component: For example, 0.001-1%, preferably 0.01-1%.
Steroid component: For example, 0.001-1%, preferably 0.01-1%.

  Further, in the composition for applying to mucosa of the present invention, various components and additives are appropriately selected according to conventional methods according to the use and form as long as the effects of the invention are not impaired. May be used in combination. As those components or additives, for example, carriers (water, aqueous solvents, aqueous or oily bases, etc.) commonly used in the preparation of semi-solids and liquids, thickeners, sugars, surfactants, Various additives such as preservatives, bactericides or antibacterial agents, pH regulators, tonicity agents, fragrances or refreshing agents, and buffering agents can be mentioned.

Although the typical component used for the mucosa application composition of this invention is illustrated below, it is not limited to these.
Thickeners: for example, dextran, carboxyvinyl polymer, alginic acid or a salt thereof, polyvinyl alcohol (completely or partially saponified product), polyvinylpyrrolidone, macrogol, sodium chondroitin sulfate and the like.
Sugars: for example, glucose, cyclodextrin and the like.
Sugar alcohols: For example, xylitol, sorbitol, mannitol and the like.
These may be d-form, l-form or dl-form.
Surfactant: For example, glycine-type amphoteric surfactant such as alkyldiaminoethylglycine; alkyl quaternary ammonium salt (specifically, cationic surfactant such as benzalkonium chloride, benzethonium chloride, etc.) The number indicates the number of moles added.
Preservatives, bactericides or antibacterial agents: for example, alkyldiaminoethylglycine hydrochloride, sodium benzoate, ethanol, benzalkonium chloride, benzethonium chloride, chlorhexidine gluconate, chlorobutanol, sorbic acid, potassium sorbate, sodium dehydroacetate, paraoxy Methyl benzoate, ethyl paraoxybenzoate, propyl paraoxybenzoate, butyl paraoxybenzoate, oxyquinoline sulfate, phenethyl alcohol, benzyl alcohol, biguanide compounds (specifically, polyhexamethylene biguanide, etc.), Glow Kill (manufactured by Rhodia) Name) etc.
pH adjuster: For example, hydrochloric acid, boric acid, aminoethylsulfonic acid, epsilon-aminocaproic acid, acetic acid, sodium hydroxide, sodium hydrogen carbonate, sodium carbonate, borax, triethanolamine, monoethanolamine and the like.
Isotonizing agents: for example, sodium bisulfite, sodium sulfite, potassium chloride, calcium chloride, sodium chloride, magnesium chloride, potassium acetate, sodium acetate, sodium bicarbonate, sodium carbonate, sodium thiosulfate, magnesium sulfate, dihydrogen phosphate Sodium, sodium dihydrogen phosphate, potassium dihydrogen phosphate, glycerin, propylene glycol and the like.
Fragrance or cooling agent: For example, geraniol, menthone, linalyl acetate, citral other than those described above. These may be d-form, l-form or dl-form.
Buffer: aminoethyl sulfonic acid, epsilon-aminocaproic acid, citrate buffer, acetate buffer, carbonate buffer, borate buffer, phosphate buffer, etc. Specifically, citric acid, sodium citrate, acetic acid, potassium acetate, sodium acetate, sodium hydrogen carbonate, sodium carbonate, boric acid, borax, disodium hydrogen phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate Such.
Stabilizer: Dibutylhydroxytoluene, trometamol, sodium formaldehyde sulfoxylate (Longalite), tocopherol, sodium pyrosulfite, monoethanolamine, aluminum monostearate, etc.
Solubilizer, base: octyldodecanol, olive oil, sesame oil, titanium oxide, potassium bromide, soybean oil, camellia oil, corn oil, rapeseed oil, paraffin, plastibase, peanut oil, lanolin, petrolatum, almond oil, wheat germ Oil, sunflower oil, cottonseed oil, coconut oil, etc.

Thickener: 0.0005 to 50%, for example, preferably 0.001 to 10%
Saccharides: for example 0.001 to 10%, preferably 0.01 to 5%
Surfactant: For example, 0.0001 to 10%, preferably 0.005 to 5%
Preservative, bactericidal agent or antibacterial agent: for example, 0.00001-5%, preferably 0.0001-2%
pH regulator: for example, 0.00001-5%, preferably 0.0001-2%
Isotonizing agent: for example 0.001 to 10%, preferably 0.01 to 5%
Perfume or refreshing agent: for example, 0.00001-5%, preferably 0.0001-2%
Buffer: for example 0.001-10%, preferably 0.01-5%

  The mucosa-applied composition of the present invention is used after adjusting to an osmotic pressure within a range acceptable for a living body, if necessary. The osmotic pressure is about 100 to 1200 mOsm, preferably about 100 to 600 mOsm, particularly preferably about 150 to 400 mOsm, and the osmotic pressure ratio with respect to physiological saline is usually 0.3 to 4.1, preferably 0.3 to 2. 1, particularly preferably about 0.5 to 1.4.

The mucosa-applied composition of the present invention is used after adjusting to an osmotic pressure within a range applicable to a living body, if necessary. The pH is usually pH 4.0 to 10.0, preferably 4.5 to 9.5, particularly preferably 5.0 to 9.0. The pH can be adjusted using a buffer, the pH adjuster, or the like.
Here, examples of the buffer include borate buffer, phosphate buffer, carbonate buffer, citrate buffer, and acetate buffer. Preferred buffering agents are borate buffer, phosphate buffer, carbonate buffer and citrate buffer. Particularly preferred buffering agents are borate buffers or phosphate buffers. Examples of the boric acid buffer include borates such as boric acid, alkali metal borates, and alkaline earth metal borates, and combinations of boric acid and borates. Examples of the phosphate buffer include phosphates such as phosphoric acid, alkali metal phosphates, and alkaline earth metal phosphates, and combinations of phosphoric acid and phosphates. Moreover, you may use the borate or the hydrate of a phosphate as a borate buffer or a phosphate buffer. More specifically, boric acid or a salt thereof (sodium borate, potassium tetraborate, potassium metaborate, etc.), phosphoric acid or a salt thereof (sodium hydrogen phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, etc.) , Carbonic acid or a salt thereof (sodium bicarbonate, sodium carbonate, etc.), citric acid or a salt thereof (sodium citrate, potassium citrate, etc.). When a borate buffer or a phosphate buffer is used as the buffer, the concentration of these buffers in the ophthalmic composition of the present invention is, for example, about 0.0001 to 10.0%.

  The composition applied to mucosa of the present invention can be produced by a known method. Semi-solid and liquid preparations can be prepared by mixing the base and each component. Furthermore, if necessary, a filtration sterilization treatment process, a container filling process, and the like can be added.

  Moreover, this invention mix | blends a castor oil with 0.001 weight part or more and less than 2 weight part with respect to 1 weight part of cellulosic thickener, nonionic surfactant, and nonionic surfactant. A method of stabilizing the viscosity of the composition. Furthermore, this invention mix | blends castor oil with 0.001 weight part or more and less than 2 weight part with respect to 1 weight part of cellulosic thickener, nonionic surfactant, and nonionic surfactant. To improve the feeling of use of the composition. In addition, the kind of the cellulose thickener to contain, the kind of nonionic surfactant, castor oil, the usage-amount of these, etc. can be performed according to the above-mentioned description regarding the composition of this invention.

Hereinafter, the present invention will be described in detail based on test examples and examples, but the present invention is not limited to these examples.
Viscosity measurement method Viscosity measurement method is a method using a cone-and-plate rotational viscometer (general test method, 45. Viscosity measurement method, second method rotational viscometer method described in the 14th revised Japanese pharmacy method, "( 3) The method described in the section “Cone-plate rotational viscometer” was followed. Specifically, the measurement was performed using a commercially available cone-plate type rotational viscometer and an appropriately selected rotor.
In measuring the viscosity, commercially available viscometers such as E-type viscometers (manufactured by TOKIMEC, sold by Toki Sangyo (Japan)), Synchroelectric PC type (Brookfield, USA), Ferran Tishari (Feranti, UK), Rot Visco R (Haake, Germany), IGK Hischer Rheometer (Ishida Giken, Japan), Shimadzu Rheometer R (Shimadzu, Japan), Weissenberg Greogoniometer (Sangamo, UK), Mechanical spectrometers (Rheometrics, US) can be used. Then, by appropriately selecting these commercially available viscometers and rotors, by appropriately adjusting the petroleum-based hydrocarbon oil (Newtonian fluid) defined by JIS Z8809 for each test sample measurement as a calibration standard solution, The viscosity at 20 ° C. can be measured.

Specifically, as shown in FIG. 1, a sample is put into a gap having an angle α between the cone 1 and the flat disk 2, and the cone 1 or the flat disk 2 is rotated at a constant angular velocity ω or torque T. The torque or angular velocity received by the flat disc 2 or the cone 1 when reaching a steady state was measured, and the viscosity was measured by calculating the viscosity η of the sample by the following equation.
η = 100 × (3α / 2πR ³ ) · (T / ω)
η: Viscosity of sample (mPa · s) (Pa · s = 10 ³ mPa · s)
α: Angle formed by flat disk 2 and cone 1 (rad)
π: Circumference ratio R: Radius of cone 1 (cm)
T: Torque (10 ⁻⁷ N · m) acting on the flat disk 2 or the conical surface
ω: Angular velocity (rad / s)

The viscosity of each comparative example and each example in this test is a TVE-20L type viscometer cone plate type (manufactured by TOKIMEC, Toki Sangyo (Japan)), which is a type of E-type viscometer. Measurement was performed under the following measurement conditions.
Measurement condition:
Standard scale cone rotor (equivalent to cone 1 in Fig. 1) (α = 1 ° 34 ', radius (R) = 24mm) attached to TVE-20L viscometer cone plate type full scale torque 6.737 × 10-7 Nm Rotate with a motor through the spring. During measurement, the viscometer is installed so that the rotation axis is perpendicular to the horizontal plane.
1 ml of the test sample is placed on a predetermined position of the cone rotor (a plate, which corresponds to the flat disk 2 in FIG. 1), and is left until the temperature reaches 20.0 ° C. Next, the apparatus is rotated at a rotational speed corresponding to the viscosity of the test sample, and the displayed viscosity is read. In order to obtain highly accurate measurement results, before measurement of the test sample, petroleum-based hydrocarbon oil (Newtonian fluid) specified by JIS Z 8809 is used as the calibration standard solution, and the measured value is the viscosity of the standard solution. Adjust to match. The same result can be obtained by using a commercially available model other than the TVE-20L viscometer cone plate type, selecting a cone rotor in the same manner as described above, and performing calibration appropriately.
Rotor used: Standard rotor (1 ° 34 ', R = 24mm)
Rotation speed: 50rpm
Sample volume: 1ml
Measurement temperature: 20 ° C
Time: Viscosity after 3 minutes was taken as a measured value.

Test Example 1 The preparation of each Example and Test Example used in the viscosity stability test was performed according to the formulation shown in Table 1. Specifically, the preparation method of Example 1 is shown. 0.6 g of hydroxyethyl cellulose (trade name “Fuji Chemi HEC” CF-V, manufactured by Sumitomo Seika) was stirred and dissolved in 100 ml of purified water, and after dissolving hydroxyethyl cellulose (HEC in the table), 3.6 g boric acid, 0.7 g borax was added and dissolved (conditioning liquid A). Stir and dissolve 1.0 g of polysorbate 80 (trade name “Nikkor TO-10M” manufactured by Nippon Surfactant) and 0.04 g of castor oil (trade name “castor oil” manufactured by Kominato Pharmaceutical Co., Ltd.) and add 50 ml of purified water to stir and dissolve. (Preparation liquid B). Adjustment liquid B was added to adjustment liquid A, and purified water was further added to make a total of 200 ml (pH = 7.2). After measuring the viscosity, each glass bottle was filled with 100 ml. Further, according to Example 1, other examples and comparative examples were also prepared.

The viscosity of each Example and each Comparative Example prepared with the formulation shown in Table 1 was measured. Then, 10 mL was filled in a transparent glass bottle, sealed, and stored for 7 days in a thermostatic bath at 50 ° C. (CH20-11M manufactured by Nagano Kagaku Kikai Seisakusho). The viscosity was measured again after storage for 7 days. From the viscosity measured values before and after the heat treatment, the residual viscosity ratio (%) = viscosity after storage at 50 ° C. for 7 days ÷ viscosity before storage at 50 ° C. × 100 was calculated.
The results are shown in Table 1.

  As a result of the test, the viscosity reduction of the cellulosic thickener is promoted by the presence of a nonionic surfactant, but it is confirmed that the viscosity reduction can be suppressed depending on the concentration of castor oil by containing castor oil. It was done. Furthermore, in the Example which contained EDTA with castor oil, it was shown that the fall inhibitory effect of a viscosity is reinforced. In the composition of the present invention, the desired viscosity set in the formulation design was stably maintained over a long period of time, and it was confirmed that the composition was more excellent as a mucosa-applied composition.

In the following examples, the formulation components were dissolved in purified water to make a total volume of 100 ml, and sterile filtered to prepare eye drops (or eye drops) and eye drops (or eye wash).
Example 7 Eye Drop Hydroxyethyl Cellulose 0.60 g
Polysorbate 80 0.10g
Polyoxyethylene hydrogenated castor oil 60 0.20 g
Castor oil 0.02g
L-potassium potassium aspartate 0.10 g
Sodium chondroitin sulfate 0.50g
Potassium chloride 0.08g
Sodium chloride 0.44g
Boric acid 0.30g
Borax 0.035g
Potassium sorbate 0.10g
l-Menthol 0.001g
Hydrochloric acid / sodium hydroxide
Purified water
100ml total volume
pH (20 ° C.) = 7.5 Viscosity (20 ° C.) = 70.6 mPa · s

Example 8 Eye Drop Hydroxyethyl Cellulose 0.13 g
Hydroxypropyl methylcellulose 0.10g
Polysorbate 80 0.30g
Polyoxyethylene hydrogenated castor oil 60 0.30 g
Castor oil 0.02g
Sesame oil 0.03g
Methyl sulfate neostigmine 0.005g
Allantoin 0.10g
Chlorobutanol 0.15g
Boric acid 0.900g
Borax 0.045g
l-Menthol 0.05g
0.01 g of alkyldiaminoethylglycine hydrochloride solution
Hydrochloric acid / sodium hydroxide
Purified water
100ml total volume
pH (20 ° C.) = 6.3 Viscosity (20 ° C.) = 5.2 mPa · s

Example 9 Eye Drops for CL Hydroxypropylmethylcellulose 0.10 g
Polysorbate 80 0.20g
Castor oil 0.06g
Sodium edetate 0.005g
Dipotassium glycyrrhizinate 0.10g
0.10 g of pyridoxine hydrochloride
L-aspartate potassium 0.20 g
Sodium chondroitin sulfate 0.50g
Sodium hyaluronate 0.05g
Sodium chloride appropriate amount
1.000g boric acid
Borax 0.200g
l-Menthol 0.01g
d-Camphor 0.001g
d-borneol 0.001 g
Potassium sorbate 0.10g
Hydrochloric acid / sodium hydroxide
Purified water
100ml total volume
pH (20 ° C.) = 7.2 Viscosity (20 ° C.) = 19.4 mPa · s

Example 10 Eyewash Hydroxypropylmethylcellulose 0.25 g
Polysorbate 80 0.20g
Castor oil 0.01g
Dipotassium glycyrrhizinate 0.025g
0.005 g of pyridoxine hydrochloride
D-α-Tocopherol acetate 0.005 g
L-potassium aspartate 0.100 g
Boric acid 1.700g
Borax 0.100g
l-Menthol 0.015g
d-Camphor 0.006g
d-borneol 0.003g
Concentrated benzalkonium chloride solution 50 0.004g
Hydrochloric acid / sodium hydroxide
Purified water
100ml total volume
pH (20 ° C.) = 6.3 Viscosity (20 ° C.) = 6.1 mPa · s

Test Example 2 Usability Test Preparation of the test preparation used for the test was in accordance with the formulation shown in Table 2.
Specifically, the preparation method of the test formulation 2 is shown. Sodium chloride, potassium chloride, potassium sorbate, sodium edetate, polysorbate 80 (TO-10M), polyxammer 407, l-menthol, castor oil (trade name “castor oil” manufactured by Kominato Pharmaceutical Co., Ltd.), borax and boric acid Is stirred and dissolved in 50 ml of purified water, and sodium carboxymethylcellulose (in the table, CMC, trade name “AG Gum M”, Daiichi Kogyo Seiyaku Co., Ltd.) is added and dissolved by stirring to dissolve borax. After addition, purified water and hydrochloric acid / sodium hydroxide were added in appropriate amounts to adjust to pH = 7.5 to make a total of 100 ml.
Other test preparations are hydroxyethyl cellulose (trade name “Fuji Chemi HEC” CF-V Sumitomo Seika Co., Ltd.), hydroxypropyl cellulose (trade name “Metroze 65SH-4000”, Shin-Etsu Chemical Co., Ltd.) instead of sodium carboxymethylcellulose. Was similarly adjusted using.

  The prepared test preparation is filtered and filled into an eye drop container to produce eye drops for use in the test, and each eye drop is used for 20 dedicated monitors (10 naked eyes, 5 oxygen-permeable hard contact lens wearers, soft contact) 5 lens wearers) were instilled to evaluate the feeling of use. One eye drop of castor oil (Test preparations 1, 3, 5) was instilled into both eyes, and 30 minutes later, eye drops containing castor oil (Test preparations 2, 4, 6) were instilled into both eyes. Then, the feeling of use was compared between the eye drops containing no castor oil and the eye drops containing castor oil, and the feeling of use was evaluated according to the following evaluation criteria. The average values of the evaluation points of the naked eye monitor not wearing the contact lens and the contact lens wear monitor are shown in the table.

Evaluation criteria Stickiness:
Castor oil-containing eye drops are free from stickiness, and the three-point castor oil-containing eye drops are the same as the non-castor oil-containing eye drops. The two-point castor oil-containing eye drops are more sticky. Yes About one-point blurring:
Castor oil-containing ophthalmic solution quickly eliminated blurring and clouding of the visual field. Three-point castor oil-containing ophthalmic solution and non-castor oil-containing ophthalmic solution are about the same level. One point that is difficult to eliminate blurring and clouding of the field of view

  Test results show that eye drops containing cellulosic thickeners and nonionic surfactants add castor oil, which eliminates stickiness and gives a light and smooth feeling of blinking. It was shown that the cloudiness disappeared quickly.

Claims (9)

a) Cellulosic thickener,
b) a nonionic surfactant, and c) a mucosa-applied composition containing 0.001 part by weight or more and less than 2 parts by weight of castor oil with respect to 1 part by weight of the nonionic surfactant. , Ethylenediaminediacetic acid, diethylenetriaminepentaacetic acid, N- (2-hydroxyethyl) ethylenediaminetriacetic acid, or a salt thereof, except that at least one selected from these is included]. The composition for mucous membrane application according to claim 1, wherein the viscosity at 20 ° C is 2 mPa · s or more and 100,000 mPa · s or less. The composition for applying to mucosa according to any one of claims 1 and 2, wherein the cellulosic thickener is at least one selected from methyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, and salts thereof. . The nonionic surfactant is a nonionic surfactant selected from polyoxyethylene-polyoxypropylene block copolymers, polyoxyethylene sorbitan fatty acid esters or polyoxyethylene hydrogenated castor oils. The composition for applying to mucosa according to any one of the above. The composition for applying to mucosa according to any one of claims 1 to 4, which is an eye drop, an eye wash, a contact lens mounting liquid, and a nasal drop. The mucosa-applied composition according to any one of claims 1 to 5, which has a pH of 4.0 to 10.0. Furthermore, the composition applied to mucosa according to any one of claims 1 to 6, further comprising one or more compounds selected from menthol, camphor or borneol. Viscosity of the composition by blending castor oil in an amount of 0.001 part by weight or more and less than 2 parts by weight with respect to 1 part by weight of the nonionic surfactant together with the cellulosic thickener and the nonionic surfactant. (However, the case where at least one selected from edetic acid, ethylenediaminediacetic acid, diethylenetriaminepentaacetic acid, N- (2-hydroxyethyl) ethylenediaminetriacetic acid, or a salt thereof is blended) is used. Use of the composition by blending castor oil in an amount of 0.001 part by weight to less than 2 parts by weight with respect to 1 part by weight of the nonionic surfactant together with the cellulosic thickener and the nonionic surfactant. A method for improving the feeling (except when blending at least one selected from edetic acid, ethylenediaminediacetic acid, diethylenetriaminepentaacetic acid, N- (2-hydroxyethyl) ethylenediaminetriacetic acid, or salts thereof).

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