WO2014199486A1 - 嚥下障害改善用医薬品 - Google Patents
嚥下障害改善用医薬品 Download PDFInfo
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- WO2014199486A1 WO2014199486A1 PCT/JP2013/066340 JP2013066340W WO2014199486A1 WO 2014199486 A1 WO2014199486 A1 WO 2014199486A1 JP 2013066340 W JP2013066340 W JP 2013066340W WO 2014199486 A1 WO2014199486 A1 WO 2014199486A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/40—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
- A61K31/401—Proline; Derivatives thereof, e.g. captopril
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
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- the present invention relates to a pharmaceutical composition for improving dysphagia and preventing aspiration pneumonia.
- the dysphagia is a big problem from the viewpoint of QOL because it becomes difficult to swallow at the time of eating and drinking, and it is often necessary to give up intake of food and drink from the mouth and nutrition intake. At the same time, mental and physical stress is excessive for those who care for food and drink. Moreover, although the ratio by pneumonia increases rapidly due to the cause of death in the elderly, most of them are considered to be aspiration pneumonia caused by dysphagia.
- dysphagia The onset of dysphagia is often caused by cerebrovascular disorders, Parkinson's disease, aging, disorders of the basal ganglia due to overdose of antipsychotic drugs, and the like.
- substance P synthesis that is promoted by the dopamine nerve decreases.
- the synthesized substance P induces a swallowing reflex by being released from the nerve endings of the vagus and glossopharyngeal nerve sensory branches. Therefore, the decrease in substance P amount triggers aspiration by lowering the swallowing reflex, and aspiration pneumonia occurs especially when bacteria in the oral cavity enter the lungs due to occult aspiration. Therefore, improvement in swallowing reflex is extremely important in improving QOL of dysphagia patients who are forced to be inconvenient in eating and drinking, reducing the burden on caregivers, and preventing aspiration pneumonia.
- angiotensin converting enzyme uses substance P as a substrate, as well as angiotensin I, and is involved in its degradation. It is assumed that the use of an angiotensin converting enzyme inhibitor suppresses substance P degradation and improves dysphagia. It has been reported that the onset of pneumonia is suppressed (Non-patent Document 1). However, in order to inhibit the action of angiotensin converting enzyme by oral administration, an angiotensin converting enzyme inhibitor is used as it is as a hypotensive agent, so even if it is a person with normal blood pressure or low blood pressure, Care must be taken when using it to lower blood pressure.
- the inventor of the present invention makes it a first problem to develop a medicine for preventing aspiration pneumonia with few side effects and improving dysphagia. Furthermore, the second is the development of a pharmaceutical comprising as an active ingredient an angiotensin converting enzyme inhibitor that is applied by a specific administration method for preventing aspiration pneumonia and improving dysphagia without causing side effects such as lowering blood pressure. It is an issue.
- the present inventors have obtained a strong ameliorating action on dysphagia without exhibiting an antihypertensive effect by directly administering an angiotensin converting enzyme inhibitory substance to the pharyngeal region.
- the medicament for improving dysphagia which has been completed based on the above findings, is characterized by comprising an angiotensin converting enzyme inhibitory action component locally administered to the throat region as an active ingredient.
- the drug for improving dysphagia of the present invention includes a therapeutic agent for dysphagia and a preventive agent for dysphagia.
- the pharmaceutical composition which can expect improvement of a dysphagia and prevention of aspiration pneumonia by using the administration method and / or dosage which do not affect blood pressure is provided for an angiotensin converting enzyme inhibitory agent.
- angiotensin converting enzyme inhibitory agent is provided for an angiotensin converting enzyme inhibitory agent.
- the invention of the present application can improve dysphagia at a time when the effect is not manifested by oral administration, that is, has immediate effect.
- FIG. 1 The graph which shows the result of having investigated the swallowing reflex fall effect by the haloperidol repeated administration in Experimental example 1.
- FIG. 1 The graph which shows the result of having investigated the swallowing reflex improvement effect 30 minutes after administration by the pharyngeal local administration and the oral systemic administration of the captopril aqueous solution in the haloperidol repeated administration guinea pig dysphagia model in the comparative example 1.
- Dysphagia improving drug angiotensin converting enzyme inhibitory substance
- Angiotensin converting enzyme inhibitory substance is an inhibitor of an enzyme that converts angiotensin I to angiotensin II, and is generally used for the treatment of hypertension.
- Angiotensin converting enzyme has low substrate selectivity and decomposes substance P as a substrate.
- the angiotensin converting enzyme inhibitory agent is mainly captopril, lisinopril, enalapril, benazepril, imidapril, alacepril, perindopril, quinapril, temocapril, trandolapril, cilazapril, delapril, etc., and active metabolites thereof. .
- the dysphagia-improving drug comprising the angiotensin converting enzyme inhibitory agent of the present invention as an active ingredient can be locally administered. More specifically, the dysphagia-improving drug of the present invention includes a dysphagia in which an active ingredient angiotensin converting enzyme inhibitory agent is locally administered to at least one site selected from the oral cavity, pharynx, larynx and airways. Includes improvers. As described above, local administration to at least one site selected from the pharynx, larynx and airways improves dysphagia with immediate effect without causing blood pressure lowering action by an angiotensin converting enzyme inhibitory substance. This can prevent aspiration pneumonia.
- the dysphagia improving drug of the present invention includes a dysphagia improving drug in which an active ingredient angiotensin converting enzyme inhibitory agent is locally administered to the pharynx.
- a dysphagia improving drug in which an active ingredient angiotensin converting enzyme inhibitory agent is locally administered to the pharynx.
- topical administration for example, it can be used in such a manner that it is applied directly to the pharyngeal mucosa.
- the dysphagia-improving drug of the present invention is applied in a form for absorbing the oral mucosa, the throat mucosa and the airway mucosa. More specifically, it can be a liquid preparation such as a spray, a film preparation, an oral / pharyngeal patch, a nebulizer, and a direct application containing an angiotensin converting enzyme inhibitory substance as an active ingredient.
- Examples of edible and water-soluble film bases used in film preparations or oral and pharyngeal patches include gelatin, pectin, arabinoxylan, sodium alginate, carrageenan, xanthan gum, guar gum, pullulan, hypromellose, and hydroxypropylcellulose.
- Water-soluble hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose, polyvinyl alcohol, polyvinyl pyrrolidone, polyethylene glycol and the like can be used.
- saccharides As a carrier used for an inhalant (nebulizer) or a spray (spray), saccharides, sugar alcohols, amino acids and / or inorganic salts can be used.
- the saccharide include lactose, glucose, sucrose, maltose, trehalose, maltodextrin, dextran and the like.
- sugar alcohols include mannitol, xylitol, erythritol, maltitol, sorbitol, arabitol, and xylose.
- amino acids include leucine, isoleucine, lysine, valine, threonine, methionine, cysteine, cystine, phenylalanine, tryptophan, glycine and the like.
- inorganic salts include calcium carbonate, sodium chloride, calcium phosphate and the like. Preferably, lactose can be used.
- An emulsifier, a suspending agent, or a preservative can be added to the liquid agent for direct application, if necessary.
- the emulsifier include polysorbate 80, lauromacrogol, glyceryl monostearate, sodium lauryl sulfate, and lecithin.
- the suspending agent include polyvinyl alcohol, popidone, carmellose sodium, methylcellulose, hydroxypropylcellulose, and hydroxymethylcellulose. , Sodium alginate, gum arabic and the like.
- the dysphagia-improving drug of the present invention is a dysphagia patient, an elderly person, a cerebrovascular disorder patient, a Parkinson's disease patient, or an antipsychotic drug who may disturb dysphagia Can be administered.
- spray, nebulizer, or direct application is a method that does not require a swallowing action of saliva, it can be used regardless of the degree of swallowing dysfunction. Therefore, for severe dysphagia, it is desirable to administer by spray, nebulizer, or direct application.
- the dysphagia-improving drug of the present invention can be administered locally once to the pharynx, larynx and / or airways.
- a single local administration means the initial administration when used by multiple administrations or repeated administrations per day, and an effect of improving dysphagia can be obtained for each administration.
- this invention can improve a dysphagia at the time of not showing an effect expression when it is orally administered. That is, since it is immediate effect, the angiotensin converting enzyme inhibitory component can be applied directly to the pharyngeal mucosa, for example, before each meal and / or before going to bed, more preferably 30 minutes before that.
- a single administration dose may be an amount that does not cause a decrease in blood pressure and an amount that improves dysphagia, and the dysphagia can be improved by an amount that is much smaller than an amount necessary for lowering blood pressure. More specifically, a single dose is less than the minimum dose at which blood pressure lowering action is expected, preferably 1/10 of the dose, and more preferably 1/100. For example, in the case of lisinopril, the single dose is less than the minimum dose (2.5 mg) at which a blood pressure lowering effect is expected when administered to humans, preferably 250 ⁇ g, which is 1/10 of the dose, More preferably, it is 25 ⁇ g, and can be reduced to 1 ⁇ g according to the following examples.
- the dysphagia improving action dose obtained in the following examples is 5 ng / kg in terms of body weight, If a typical human body weight is 60 kg, a dysphagia-improving effect can be obtained at a dose of 300 ng or more / dose.
- dysphagia caused by basal ganglia disorder develops by administration of an antipsychotic drug that suppresses the action of dopamine nerve such as haloperidol. Therefore, the present inventors constructed an animal model of impaired swallowing function induced by repeated overdose of haloperidol, and evaluated the drug efficacy.
- Example 1 6-week-old female Hartley guinea pigs (330-390 g) acclimated for 1 week after arrival, saline or haloperidol solution at a dose of 1 mg / kg, about 12 hours, twice a day for 7 days It was injected subcutaneously. Then, fix the limbs of the guinea pig, inject 500 ⁇ l of distilled water into the pharyngeal region with a sonde over about 5 seconds, and swallow up to 10 seconds and 30 seconds after the injection. Measured based on movement. Thereafter, physiological saline or haloperidol solution was injected again (1 mg / kg).
- Example 1 Effect of topical captopril administration
- 6 mg-old Hartley female guinea pigs (330-390 g) were repeatedly administered with a 1 mg / kg haloperidol solution, and on the 8th day, the drinking water reflex was performed as described above.
- distilled water or 100 ⁇ l of captopril 50 mM, 50 ⁇ M and 50 nM aqueous solution (pH 7.0) 100 ⁇ l was sprayed directly onto the pharyngeal mucosa of the guinea pig using a spray-type sonde. Drinking water reflection was measured 30 minutes after spraying in the same manner as the pre-value measurement (measured value).
- Example 2 Effect of local administration of lisinopril
- a guinea pig model of guinea pig dysphagia induced by repeated administration of haloperidol was prepared, and 100 ⁇ l of lisinopril 0.5 nM to 500 ⁇ M aqueous solution (pH 7.0) was used with a spray-type sonde.
- the effect on drinking water reflex was measured by a single direct spray on the pharyngeal mucosa.
- Example 3 Involvement of substance P and prevention of dysphagia FK888 (10 ⁇ M 50 ⁇ l / guinea pig), a substance P receptor antagonist, is locally administered to the pharynx of a guinea pig using a spray-type sonde and drinking water as in Experiment 1 The number of reflections was measured.
- Example 4 Involvement of substance P / mechanism for improving dysphagia
- a guinea pig dysphagia model induced by repeated administration of haloperidol was prepared, and 100 ⁇ l of lisinopril 50 nM aqueous solution was sprayed directly onto the pharyngeal mucosa using a spray-type sonde.
- a haloperidol repeated-dose induced guinea pig dysphagia model was prepared, and captopril 50 ⁇ M aqueous solution or 50 mM aqueous solution was sprayed into the pharyngeal mucosa 100 ⁇ l single local administration or the same dose of captopril was orally administered. (Administration into the stomach). The frequency of drinking was measured 30 minutes after administration.
- haloperidol overdose of haloperidol induces a decrease in swallowing reflex as well as a decrease in the amount of substance P in the blood in human clinical practice.
- the haloperidol repeated administration-induced guinea pig dysphagia model used in the present invention is It was thought to reflect the condition.
- Example 1 Example 2, and Comparative Example 3, it is clear that a decrease in swallowing reflex is improved by a single local administration to the pharynx of a dose of an angiotensin converting enzyme inhibitor that does not affect blood pressure. became.
- Example 3 a single local administration of an angiotensin converting enzyme inhibitory substance to the pharynx prevents dysphagia caused by substance P receptor antagonists by suppressing substance P degradation in the pharyngeal tissue. It is thought to have been suppressed.
- single local administration of an angiotensin converting enzyme inhibitory agent to the pharynx from Example 4 suppresses substance P degradation in the pharyngeal tissue, thereby enhancing the induction of swallowing reflex by substance P and repeated administration of haloperidol. It is considered that the guinea pig dysphagia model was improved.
- Example 1 From Example 1, Example 2, Comparative Example 1, Comparative Example 2, and Comparative Example 3, a single local administration of an angiotensin converting enzyme inhibitor improves dysphagia at a low dose that does not affect blood pressure. In addition, it was determined that an effect of improving early dysphagia that cannot be obtained by oral administration can be obtained.
- the dose of 50 mM captopril aqueous solution and 100 ⁇ l in Comparative Example 1 is a dose that exhibits a superior blood pressure lowering effect in various animal models.
- the dose of lisinopril aqueous solution 50 mM, 100 ⁇ l in Comparative Example 2 is almost the same as the clinical dose as a human antihypertensive drug according to body weight, and a dose exhibiting a sufficient blood pressure lowering effect in humans and animals.
- no dysphagia-improving effect was observed with oral administration even at the highest blood concentration. That is, it has been determined that even if the dose used for hypertension treatment in human clinical use is taken orally, an early improvement action for dysphagia similar to local administration cannot be obtained.
- an angiotensin converting enzyme inhibitory agent to the pharynx does not induce substance P depletion from nerve endings, and oral dopamine preparations and angiotensin converting enzyme inhibitory agents It was judged to be an excellent method of use as a dysphagia-improving drug capable of showing a medicinal effect at an early stage after administration without taking various side effects such as lowering blood pressure like taking.
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Abstract
Description
アンジオテンシン変換酵素阻害作用物質は、アンジオテンシンIをアンジオテンシンIIへ変換する酵素の阻害物質であり、一般的に高血圧の治療に用いられる。アンジオテンシン変換酵素は、基質選択性が低くサブスタンスPをも基質とし分解する。アンジオテンシン変換酵素阻害作用物質の服用により、サブスタンスPの分解を阻害することによりサブスタンスPの体内濃度を高め、嚥下障害を改善することができる。
本発明のアンジオテンシン変換酵素阻害作用物質を有効成分とする嚥下障害改善薬は、その有効成分を局所投与することができる。より具体的には、本願発明の嚥下障害改善薬には、有効成分のアンジオテンシン変換酵素阻害作用物質を口腔内、咽頭部、喉頭部および気道から選択される少なくとも1の部位へ局所投与する嚥下障害改善薬を包含する。上記のように、咽頭部、喉頭部および気道から選択される少なくとも1の部位へ局所投与することにより、アンジオテンシン変換酵素阻害作用物質による血圧低下作用を生じることなく、即効性をもって嚥下障害を改善することができ、これにより、誤嚥性肺炎を予防することができる。
本願発明の嚥下障害改善薬は、口腔内粘膜、咽喉頭部粘膜および気道粘膜吸収せしめるための形態にて適応される。より具体的には、有効成分であるアンジオテンシン変換酵素阻害作用物質を含有するスプレー、フィルム製剤、口腔・咽頭内貼付剤、ネブライザー、直接塗布等の液剤とすることができる。
本発明の嚥下障害改善薬は、嚥下障害患者や、嚥下障害をわずらう可能性のある、高齢者、脳血管障害患者、パーキンソン病患者、または抗精神病薬の投与を受けている者に投与することができる。
本発明の嚥下障害改善薬は、咽頭部、喉頭部および/又は気道に、単回局所投与することができる。単回局所投与とは、1日に複数回投与、または反復投与して使用するような場合、その初回投与を意味し、投与回毎に嚥下障害改善作用を得ることができる。なお、本願発明は、経口投与したときに効果発現を示さない時期に嚥下障害を改善することが出来る。つまり、即効性であるから、好適には、例えば毎食事前および/又は就寝前に、より好ましくは、その30分前にアンジオテンシン変換酵素阻害成分を、咽頭部粘膜へ直接塗布することができる。
1回の投与量は、血圧降下を示さない量、かつ、嚥下障害を改善する量であればよく、血圧降下に必要な量より非常に少ない量で嚥下障害を改善することはできる。より具体的には、1回の投与量は、血圧降下作用が期待される最低投与量未満であり、好ましくは、その1/10量であり、より好ましくは1/100量である。例えばリシノプリルの場合、1回の投与量は、ヒトに投与した際に血圧降下作用が期待される最低投与量(2.5 mg)未満であり、好ましくは、その1/10量である250μgであり、より好ましくは25μgであり、以下の実施例に準じれば1μgにまで減量できる。すなわち、実施例にて用いたアンジオテンシン阻害作用物質において、より高い阻害活性を保持するリシノプリルの場合、以下実施例にて得られた嚥下障害改善作用用量を体重換算すると5 ng/kgであり、一般的なヒトの体重を60 kgとすると、300 ng以上/回の投与量であれば嚥下障害改善作用を得ることが出来る。
以下、本発明を実施例等にて詳細に説明するが、本発明は以下の記載によって何ら限定して解釈されるものではない。
入荷後1週間慣化飼育した6週齢Hartley系雌性モルモット(330~390g)に、生理食塩水、あるいはハロペリドール溶液を1mg/kgの投与量で、約12時間おきに1日2回、7日間皮下に注射した。その後、モルモットの四肢を固定し、ゾンデにて咽頭直前部に500μlの蒸留水を約5秒かけて注入して、注入10秒後までと30秒後までの嚥下回数を、咽頭部の筋肉の動きを基に測定した。そして、その後再度、生理食塩水、あるいはハロペリドール溶液を注射した(1mg/kg)。
測定は、1分間のインターバルで計4回実施した。結果を図1に示す。図1から明らかなように、ハロペリドール反復投与群の飲水回数は、生理食塩水を反復投与していたモルモット群と比べて、有意に低下していた。この結果を基に、ハロペリドール反復投与誘発モルモット嚥下障害モデルとして、以下の実験における薬剤有効性評価に用いた。
実験例1と同様に6週齢Hartley系雌性モルモット(330~390g)に1mg/kgのハロペリドール溶液を反復投与し、8日目に、上記同様に飲水反射を測定し、これをプレ値とした。プレ値測定翌日に、蒸留水あるいはカプトプリル50mM、50μMおよび50nM水溶液(pH 7.0)、100μlを、噴霧式ゾンデを用いて、モルモットの咽頭粘膜に単回直接噴霧した。噴霧30分後にプレ値測定同様に飲水反射を測定した(測定値)。
実施例1同様に、ハロペリドール反復投与誘発モルモット嚥下障害モデルを作製し、リシノプリル0.5nM~500μM水溶液(pH 7.0)、100μlを、噴霧式ゾンデを用いて、モルモットの咽頭粘膜に単回直接噴霧することで、飲水反射への影響を測定した。
モルモットの咽頭部にサブスタンスP受容体拮抗作用物質であるFK888(10μM 50μl/モルモット)を、噴霧式ゾンデにて局所投与し、実験1同様に飲水反射回数を測定した。
ハロペリドール反復投与誘発モルモット嚥下障害モデルを作製し、リシノプリル50nM水溶液100μlを、噴霧式ゾンデを用いて咽頭粘膜に単回直接噴霧した後、嚥下反射に影響しない下限用量である10nM、100μlのサブスタンスP受容体拮抗作用物質であるFK888を、噴霧式ゾンデを用いて咽頭粘膜に局所投与し、実験例1同様に飲水回数を測定した。
アンジオテンシン変換酵素阻害作用物質による嚥下障害改善作用について、経口投与(胃内への投与、p.o.)と噴霧式ゾンデを用いた咽頭粘膜への局所投与(s.i.)とで、飲水回数の変化を比較した。実施例1同様に、ハロペリドール反復投与誘発モルモット嚥下障害モデルを作製し、カプトプリル50μM水溶液、または50mM水溶液を噴霧式ゾンデを用いて咽頭粘膜へ100μ単回l局所投与、あるいは同用量のカプトプリルを経口投与(胃内への投与)した。投与30分後に飲水回数の測定を行った。
比較例1同様に、リシノプリルによる嚥下障害改善作用について、経口投与(胃内への投与、p.o.)と咽頭粘膜への局所投与(s.i.)とで、飲水回数の変化を比較した。ハロペリドール反復投与誘発モルモット嚥下障害モデルを作製し、リシノプリル50mM水溶液100μlを噴霧式ゾンデを用いて咽頭粘膜へ局所投与、または同用量のリシノプリルを経口投与(胃内への投与)した。投与2時間後(経口投与において血中濃度が最大となる時間)に飲水回数の測定を行った。
実施例1および実施例2において嚥下障害の改善を示した、カプトプリル50μM水溶液100μlまたはリシノプリル5μM水溶液100μlという用量の、血圧に及ぼす影響についてSD系雄性ラット(350~400g)を用いて解析した。各用量のカプトプリル、またはリシノプリル水溶液を経口的に投与し、1時間後に血圧を測定した。その後アンジオテンシンIを静脈内投与(300ng/kg)することで血圧上昇を誘発し、平均血圧の変化を測定した。
Claims (4)
- アンジオテンシン変換酵素阻害作用物質を有効成分として含む、口腔内、咽喉頭部および気道から選択される少なくとも1の部位への局所投与用嚥下障害改善薬であって、単回投与することを特徴とする前記局所投与用嚥下障害改善薬。
- 投与量が、血圧降下を示さない投与量であって、かつ、嚥下障害を改善する投与量であることを特徴とする請求項1に記載の嚥下障害改善薬。
- 経口投与では効果を発現しない時期に嚥下障害を改善することを特徴とする請求項1または請求項2に記載の嚥下障害改善薬。
- アンジオテンシン変換酵素阻害作用物質がカプトリル又はリシノプリルである、請求項1~3いずれか1項に記載の嚥下障害改善薬。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2013/066340 WO2014199486A1 (ja) | 2013-06-13 | 2013-06-13 | 嚥下障害改善用医薬品 |
US14/897,317 US9974768B2 (en) | 2013-06-13 | 2013-06-13 | Pharmaceutical for improving dysphagia |
KR1020167000753A KR102088662B1 (ko) | 2013-06-13 | 2013-06-13 | 연하장애 개선용 의약품 |
JP2015522344A JPWO2014199486A1 (ja) | 2013-06-13 | 2013-06-13 | 嚥下障害改善用医薬品 |
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JP3762969B2 (ja) | 2003-03-31 | 2006-04-05 | 株式会社東北テクノアーチ | 嚥下障害改善剤 |
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- 2013-06-13 WO PCT/JP2013/066340 patent/WO2014199486A1/ja active Application Filing
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JP2004107285A (ja) * | 2002-09-20 | 2004-04-08 | Mercian Corp | 嚥下障害改善剤 |
JP2006511617A (ja) * | 2002-12-13 | 2006-04-06 | アダーギット | 製薬用多孔質粒子 |
WO2004058301A1 (ja) * | 2002-12-26 | 2004-07-15 | Yamada Apiculture Center, Inc. | 嚥下反射障害改善用組成物 |
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KR102088662B1 (ko) | 2020-03-13 |
JPWO2014199486A1 (ja) | 2017-02-23 |
KR20160018806A (ko) | 2016-02-17 |
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