JP3910292B2 - Anti-inflammatory analgesic for external use - Google Patents

Anti-inflammatory analgesic for external use Download PDF

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JP3910292B2
JP3910292B2 JP05200998A JP5200998A JP3910292B2 JP 3910292 B2 JP3910292 B2 JP 3910292B2 JP 05200998 A JP05200998 A JP 05200998A JP 5200998 A JP5200998 A JP 5200998A JP 3910292 B2 JP3910292 B2 JP 3910292B2
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inflammatory
extract
weight
external
minutes
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JPH11246423A (en
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道▲徳▼ 久保
秀秋 松田
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Daiichi Sankyo Healthcare Co Ltd
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Daiichi Sankyo Healthcare Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は外用消炎鎮痛剤に関する。
【0002】
【従来の技術】
インドメタシンに代表される非ステロイド系抗炎症剤は外科領域において打撲、捻挫、筋肉痛、関節炎などの治療に内服で広く用いられ、優れた治療効果が認められている。
【0003】
しかし、その消炎機序をプロスタグランジン合成阻害とする故に、内服では重篤な胃腸障害が惹起される。近年、その副作用を防ぐために、液剤、軟膏剤、貼付剤等の外用剤が開発されている。しかし、これらの成分は皮膚からの吸収が悪く、外用投与では内服と同等あるいはそれ以上の治療効果が得られていないのが現状であり、皮膚からの吸収改善による治療効果の促進が最大の課題とされていた。
【0004】
この課題を解決する方法としては、非ステロイド系抗炎症剤の基剤への溶解性を高める方法、皮膚からの吸収を促進させる成分を配合する方法などが知られている。しかし、これらの方法も非ステロイド系抗炎症剤の外用時の効果を十分に満足させるものではなかった。
【0005】
また、従来の外用剤は、適用部位に発赤、かゆみを生じさせる等の問題があり、かかる皮膚刺激性の改善も求められている。
【0006】
【発明が解決しようとする課題】
本発明の目的は非ステロイド系抗炎症剤の外用時の消炎、鎮痛効果を改善し、かつ皮膚刺激性も改善した外用消炎鎮痛剤を提供することにある。
【0007】
【課題を解決するための手段】
そこで、本発明者らは、天然由来の生薬に着目して非ステロイド系抗炎症剤との併用による作用について種々検討してきた結果、呉茱萸又はその抽出物を非ステロイド系抗炎症剤と併用すると消炎・鎮痛効果が飛躍的に向上し、更に呉茱萸又はその抽出物が優れた抗アレルギー作用、痒み防止作用を有することから前記皮膚刺激性も改善されることを見出し、本発明を完成するに至った。
【0008】
すなわち、本発明は、インドメタシン及び呉茱萸又はその抽出物を含有することを特徴とする外用消炎鎮痛剤を提供するものである。
【0010】
【発明の実施の形態】
本発明外用剤へのインドメタシンの配合量は、0.01〜10重量%、特に0.5〜2重量%が好ましい。
【0011】
本発明で用いられる呉茱萸は、ミカン科エボジア属植物の果実を起源とし、第十三改正日本薬局方にはEvodia rutaecarpa 又はEvodia officinalisの果実と定義されており、局方外生薬としてEvodia rutaecarpa var. bodinieriも収載されている。漢方では健胃、鎮痛、利尿を目標に胃内停水、頭痛、嘔吐、胸満などに用いられている。呉茱萸エキスには鎮痛作用、抗炎症作用、血流増加作用などが知られているが、非ステロイド系抗炎症剤、中でもインドメタシンの消炎鎮痛効果を増強する作用は知られていない。
【0012】
本発明においては、呉茱萸の起源植物を構成する部位全て又は葉、茎、根、花、果実、根茎などの一部をそのまま用いることができ、これらを乾燥した後、粉砕して粉末にして用いることもできる。また、本発明においては、この植物の抽出物を用いることもできる。抽出物を得る方法としては、例えばこの植物の果実、葉、根、根茎、茎、花などを水及び/又は親水性有機溶媒等の抽出溶媒を用いて抽出して抽出液を得る方法が挙げられる。親水性有機溶媒としては、例えばメタノール、エタノールなどの炭素数1〜4の低級アルコール、アセトン、エーテルなどが挙げられるが、炭素数1〜4の低級アルコールが好ましく、特にメタノール、エタノールが好ましい。これらの溶媒は単独でも、2種以上を組み合わせて使用してもよく、また、水とこれらの親水性有機溶媒を混合して使用してもよい。好ましい抽出溶媒としては、含水アルコールが挙げられ、特に含水エタノールが好ましい。これらの抽出溶媒の使用量は特に制限されず、抽出液を製するには、例えばエキス剤、チンキ剤などを製する際に用いられる冷浸法、温浸法、パーコレーション法などを適用することができる。
【0013】
得られた抽出液はそのまま、又は更に濃縮したり、希釈したり、精製したりして用いることができる。更にこのような抽出液から凍結乾燥、噴霧乾燥、減圧留去などにより粉末として用いてもよい。また、呉茱萸には、エボジアミン、ルテカルピン、エボカルピン、リモニン、エボドール等の成分が含まれており、本発明においては、これら成分の単独又は2種以上を組合せて用いてもよい。これらの成分は、これらの成分を含む呉茱萸などの植物等から抽出又は化学合成することにより、得ることができる。
【0014】
本発明において、呉茱萸又はその抽出物の配合量は外用剤に対し、起源植物換算で0.001〜30重量%が好ましく、0.01〜10重量%が特に好ましい。
【0015】
本発明の外用消炎鎮痛剤の剤型としては、外用製剤であれば、いずれの剤型でも使用でき、例えば、液剤、軟膏剤、パップ剤、エアゾール剤、硬膏剤、リニメント剤、ローション剤などを挙げることができる。これらの剤型は、その剤型に応じて通常の基剤を用い、適当な添加剤を加えることができる。
【0016】
例えば、液剤ではアラビアゴム、アルギン酸ナトリウム、カルボキシメチルセルロースナトリウム、メチルセルロース、ベントナイト等の懸濁化剤;ラウリル硫酸ナトリウム、ポリソルベート類、ソルビタンモノ脂肪酸エステル類、ポリオキシエチレン脂肪酸エステル類等の乳化剤等が用いられる。
【0017】
軟膏剤としては、油脂性基剤、水溶性基剤、乳剤性基剤又はゲル基剤のいずれでもよい。ここで油脂性基剤としては、黄色ワセリン、白色ワセリン、パラフィン、流動パラフィン、プラスチベース、シリコーン等の鉱物性基剤、植物油、豚脂、牛脂、ロウ等の動植物性基剤が挙げられる。また、乳剤性基剤としては、種々の油剤と界面活性剤と水とで構成されるクリーム剤が挙げられる。水溶性基剤としては、ポリエチレングリコールを主基剤とするものが挙げられる。また、ゲル基剤としては、カルボキシビニルポリマー、キサンタンガムなどの水溶性高分子等が挙げられる。
【0018】
本発明の外用消炎鎮痛剤には、非ステロイド系抗炎症剤の溶解、使用感等の改善を目的として、ベンジルアルコール、クロタミトン、脂肪酸ポリエチレングリコールエステル、グリコール類(プロピレングリコール、ブチレングリコール、ポリエチレングリコールなど)等を配合してもよい。
【0019】
本発明の外用消炎鎮痛剤は、例えば肩、腰、肘等の消炎鎮痛を目的とする患部に適当量を1日1回〜数回塗布又は貼付することが望ましい。
【0020】
【実施例】
次に実施例を挙げて本発明を更に詳細に説明するが、本発明はこれに何ら限定されるものではない。
【0021】
実施例1
(1)呉茱萸の50%エタノール抽出エキスの調製;
中国産呉茱萸(Evodia rutaecarpa var. bodinieriの果実)を粉砕した後、10倍量の50%含水エタノールで2時間、2回熱時抽出した。抽出液を熱時濾過し、濾液を減圧下に濃縮し、凍結乾燥を施し、乾燥50%エタノール抽出エキスを44.2%の収率で得た。
【0022】
(2)呉茱萸の70%メタノール抽出エキスの調製;
中国産呉茱萸を粉砕した後、10倍量の70%含水メタノールで2時間、2回熱時抽出した。抽出液を熱時濾過し、濾液を減圧下に濃縮し、凍結乾燥を施し、乾燥70%メタノール抽出エキスを43.4%の収率で得た。
【0023】
(3)軟膏の調製;
下記組成の軟膏基剤を用い、これにインドメタシン及び上記(1)の呉茱萸エキスをそれぞれ1.0重量%となるように混合攪拌してインドメタシン1.0重量%含有軟膏、呉茱萸1.0重量%含有軟膏、及びインドメタシン及び呉茱萸をそれぞれ1.0重量%含有軟膏を調製した。
【0024】
カルボキシビニルポリマー 1.0重量%
ベンジルアルコール 0.5重量%
オクチルドデカノール 5.0重量%
ポリエチレングリコール脂肪酸エステル 0.5重量%
ジイソプロパノールアミン 0.7重量%
エデト酸塩 0.01重量%
精製水 全量100重量%
【0025】
試験例1(カラゲニン浮腫試験)
Wistar系雄性ラット(140〜160g)の右後肢足蹠皮下に1%カラゲニン生理食塩液0.1ml/ラットを注射し、足蹠浮腫を惹起した。カラゲニン注射直前及び2、3時間後に足容積を水置換法により測定し、浮腫率を算出した。なお、被検軟膏〔実施例1(3)〕はカラゲニン注射2、1時間前に右後肢に50mg/ラットとなるように塗布した。結果は表1に示した。
【0026】
【表1】

Figure 0003910292
【0027】
その結果、呉茱萸1%単独軟膏にはカラゲニン浮腫を抑制する作用が認められなかった。インドメタシン1.0%単独軟膏は用量依存的にその浮腫を抑制した。インドメタシンと呉茱萸を併用すると、インドメタシンの抗炎症作用が顕著に増強され、その効果はインドメタシン単独群に比べて有意差が認められた。
【0028】
試験例2(呉茱萸の抗アレルギー作用)
(1)マスト細胞からのヒスタミン遊離抑制作用;
▲1▼感作ラット腹腔マスト細胞浮遊液の調製
1mgの卵白アルブミン(以下、EWAと略記、type V)と10mgの水酸化アルミニウムゲルを含む生理食塩液0.5mlをWistar系雄性ラットの足蹠皮下に4分割して投与し、同時に百日咳死菌(Bordetella pertussis)2×1010個/mlを含む生理食塩液1mlを腹腔内に投与し、感作した。7日後、上述のEWA生理食塩液をラットの両大腿部筋肉内に投与し、更に百日咳死菌2×1010個/mlの生理食塩液を腹腔内に投与して追加感作した。追加感作7日後、腹大動脈から採血して、抗EWAラット血清を得た。血清は−80℃で凍結保存した。
【0029】
上記の方法で作製した血清0.5mlをWistar系雄性ラットの腹腔内に投与し感作した24時間後、ラットを断頭瀉血し、ただちにハンクス液(10U/mlのヘパリン含有)10mlを腹腔内に注入した。90秒間腹部を静かにマッサージした後、腹腔内液を採取し、40%フィコール溶液2mlに静かに重層し、室温で30分間放置後、5℃、1,200rpm 、10分間遠心分離を行い、フィコール層上のマスト細胞を集めた。このマスト細胞はリン酸緩衝液(以下、PBSと略記、pH7.0)に浮遊させ、遠心分離による洗浄を3回繰り返し、再びPBSに浮遊(2.9×106個/ml)させた。この浮遊液中のマスト細胞含有率は85〜90%で、生存率はトルイジンブルー(0.1%、50%エタノール溶液)染色法で90%以上であることを確認した。
【0030】
▲2▼ヒスタミン遊離反応試験
▲1▼で得られたマスト細胞浮游液1.8mlを37℃、10分間プレインキュベート後、被検液(10%ジメチルスルホキシド(以下、DMSOと略記)/PBSに溶解)0.1mlを加え、10分間インキュベートし、更にEWAとホスファチジル−L−セリンを混合したもの(最終濃度EWA2mg/ml、ホスファチジル−L−セリン100mg/ml)0.1mlを加えて15分間インキュベートした。氷冷により反応を停止し、5℃、1,200rpm 、5分間遠心分離を行い、上清及び沈渣を得た。上清中のヒスタミン量は、上清0.7mlに水1.4ml、1N NaOH0.4ml、1%o−フタルジアルデヒド/メタノール溶液0.1mlを加えて4分間放置後、3N塩酸溶液0.2mlで反応を停止させた。反応終了10分後に5℃、3,000rpm 、5分間遠心分離し、上清の蛍光を励起波長360nm、蛍光波長450nmで測定し、既知濃度のヒスタミン検量線からヒスタミン量を求めた。また、マスト細胞に残留するヒスタミン量は沈渣にPBS2mlを加えて超音波処理、更に凍結融解を3回繰り返し、5℃、1,200rpm 、5分間遠心分離を行い、得られた上清を同様に測定し、抗原抗体によるヒスタミン遊離率は次式によって求めた。
【0031】
【数1】
ヒスタミン遊離率%=(抗原処置時のヒスタミン遊離量−抗原無処置時のヒスタミン遊離量)/マスト細胞中の全ヒスタミン量×100
【0032】
被検体の活性は次式による抑制率で示した。
【0033】
【数2】
抑制率%=(被検体無処置時のヒスタミン遊離率−被検体処置時のヒスタミン遊離率)/被検体無処置時のヒスタミン遊離率×100
【0034】
【表2】
Figure 0003910292
【0035】
その結果は表2に示したごとく、呉茱萸エキスは抗原抗体反応によるマスト細胞からのヒスタミン遊離を用量依存的に抑制した。
【0036】
(2)IgE関与ラット48時間Homologous Passive Cutaneous Anaphylaxix(PCA)反応試験;
抗卵白アルブミン(EWA)ラット血清の調製は、上記の方法に従って行った。PCA反応試験はWistar系雄性ラットの背部を剪毛し、皮内に8倍、もしくは16倍に希釈した抗EWAラット血清を0.05ml/siteで、それぞれ1点ずつ合計2点注射し感作した。48時間後、EWA2mgを含む1%エバンスブルー生理食塩液0.5mlを尾静脈から注射し、30分後にラットを放血致死させ、8倍希釈の血清により生じた青斑部の面積及び漏出色素量を測定した。漏出色素量の測定はこの青斑部を切り出して、1N水酸化カリウム溶液1mlを加え、37℃、48時間インキュベートした後、0.6Nリン酸2.5mlで中和し、アセトン6.5mlでよく混和抽出した。3,000rpm 、10分間遠心した後、620nmでその上清液の吸光度を測定し、予め作製したエバンスブルーの検量線より色素量を求めた。被検体はPCA誘発1時間前に1回経口投与した。
【0037】
【表3】
Figure 0003910292
【0038】
その結果は表3に示したごとく、呉茱萸エキスはPCA反応による色素の漏出を用量依存的に抑制した。
【0039】
(3)塩化ピクリル誘発接触性皮膚炎(以下、PC−CDと略記)試験
前日に剪毛したICR系雌性マウス(体重30〜32g)の腹部を剪毛し、7%塩化ピクリルエタノール溶液0.1mlを塗布し感作した。感作6日後、1%塩化ピクリル−オリーブオイル溶液0.02mlをマウスの右耳介に塗布し誘発した。誘発24時間後、耳介が十分に腫れているマウスを選別し、再度感作誘発を行った。PC−CDによる耳介の腫脹はDial Thickness Gauge(尾崎製作所株式会社)を用い、再誘発直前及び誘発後の耳介の厚さを測定することにより浮腫率として算出した。被検体は再誘発直前及び16時間後に2回経口投与した。
【0040】
【表4】
Figure 0003910292
【0041】
その結果は、表4に示したように、呉茱萸エキスはPC−CDによる耳浮腫を用量依存的に抑制した。
【0042】
試験例3(呉茱萸の抗掻痒作用)
コンパウンド誘発掻痒試験;
ddY系雄性マウス(28〜30g)に被検体を経口投与し、その1時間後に起痒物質として0.1%コンパウンド48/80生理食塩液0.1mlを背部皮下に注射することによりマウスの掻痒行動を惹起した。マウスの掻痒行動の判定はマウスが後肢で注射部位を引っ掻く行動を掻痒行動とし、その回数を注射直後より10分間計数することにより評価した。
【0043】
【表5】
Figure 0003910292
【0044】
結果は表5に示したごとく、呉茱萸エキスはコンパウンド48/80によって惹起された掻痒行動を用量依存的に抑制した。
【0045】
試験例2及び3から明らかなように、呉茱萸は抗アレルギー作用、抗掻痒作用があることから、呉茱萸と非ステロイド系抗炎症剤を配合した外用剤は、外用剤の副作用としてしばしば見られる発赤、かゆみなどの皮膚症状がおこらないことが明らかである。
【0046】
【発明の効果】
本発明の外用消炎鎮痛剤は、消炎、鎮痛効果に優れたものであり、かつ皮膚刺激性がなく皮膚外用剤として好適に使用することができ、関節炎、リウマチ、捻挫、腰痛、筋肉痛などの炎症性疾患を改善することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an external anti-inflammatory analgesic.
[0002]
[Prior art]
Non-steroidal anti-inflammatory agents represented by indomethacin are widely used in the field of surgery for the treatment of bruises, sprains, myalgia, arthritis, etc., and have excellent therapeutic effects.
[0003]
However, since the anti-inflammatory mechanism is inhibition of prostaglandin synthesis, serious gastrointestinal disorders are caused by internal use. In recent years, in order to prevent the side effects, external preparations such as liquids, ointments and patches have been developed. However, these components are poorly absorbed from the skin, and currently the therapeutic effect equivalent to or better than that of internal use is not obtained by external administration, and the greatest challenge is to promote the therapeutic effect by improving absorption from the skin It was said.
[0004]
As a method for solving this problem, a method for enhancing the solubility of a nonsteroidal anti-inflammatory agent in a base, a method for blending a component that promotes absorption from the skin, and the like are known. However, these methods also do not sufficiently satisfy the effects of non-steroidal anti-inflammatory agents when applied externally.
[0005]
In addition, conventional external preparations have problems such as redness and itching at the application site, and improvement of such skin irritation is also required.
[0006]
[Problems to be solved by the invention]
An object of the present invention is to provide an external anti-inflammatory analgesic that improves the anti-inflammatory and analgesic effects of a non-steroidal anti-inflammatory agent when applied externally and also has improved skin irritation.
[0007]
[Means for Solving the Problems]
Therefore, as a result of various investigations on the action of the combined use with a non-steroidal anti-inflammatory agent by focusing on natural herbal medicines, the present inventors have used Kurepu or an extract thereof together with a non-steroidal anti-inflammatory agent. In order to complete the present invention, the anti-inflammatory and analgesic effects are dramatically improved, and further, the skin irritation is also improved since Kureka or its extract has an excellent antiallergic action and anti-itching action. It came.
[0008]
That is, the present invention provides an external anti-inflammatory analgesic characterized by containing indomethacin and wushu or an extract thereof.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The blending amount of indomethacin in the external preparation of the present invention is preferably 0.01 to 10% by weight, particularly preferably 0.5 to 2% by weight.
[0011]
The cucumber used in the present invention originates from the fruit of the citrus family Evodia genus, and is defined as the fruit of Evodia rutaecarpa or Evodia officinalis in the 13th revised Japanese pharmacopoeia. bodinieri is also included. In Kampo, it is used for gastric arrest, headache, vomiting, chest fullness, etc., aiming at healthy stomach, analgesia and diuresis. Although the analgesic action, the anti-inflammatory action, the blood flow increasing action, etc. are known, the action of enhancing the anti-inflammatory analgesic action of non-steroidal anti-inflammatory drugs, especially indomethacin, is not known.
[0012]
In the present invention, it is possible to use all the parts constituting the plant of origin of koji or a part of leaves, stems, roots, flowers, fruits, rhizomes as they are, and after drying these, they are pulverized into powder. It can also be used. In the present invention, this plant extract can also be used. Examples of the method for obtaining the extract include a method of extracting the fruits, leaves, roots, rhizomes, stems, flowers, etc. of this plant using an extraction solvent such as water and / or a hydrophilic organic solvent to obtain an extract. It is done. Examples of the hydrophilic organic solvent include lower alcohols having 1 to 4 carbon atoms such as methanol and ethanol, acetone and ether, and lower alcohols having 1 to 4 carbon atoms are preferable, and methanol and ethanol are particularly preferable. These solvents may be used alone or in combination of two or more thereof, or may be used by mixing water and these hydrophilic organic solvents. A preferable extraction solvent includes hydrous alcohol, and hydrous ethanol is particularly preferred. The amount of these extraction solvents to be used is not particularly limited, and in order to produce an extract, for example, a cold immersion method, a digestion method, a percolation method, etc., used when producing an extract, a tincture, etc., are applied. Can do.
[0013]
The obtained extract can be used as it is, or further concentrated, diluted or purified. Further, the extract may be used as a powder by freeze drying, spray drying, vacuum distillation or the like. In addition, components such as evodiamine, lutecarpine, evocarpine, limonin, evodol and the like are included in Kureiso, and in the present invention, these components may be used alone or in combination of two or more. These components can be obtained by extraction or chemical synthesis from plants or the like such as Kureiso containing these components.
[0014]
In this invention, 0.001-30 weight% is preferable with respect to an external preparation, and 0.001-30 weight% is preferable with respect to an external preparation, and 0.01-10 weight% is especially preferable.
[0015]
As the dosage form of the external anti-inflammatory analgesic agent of the present invention, any dosage form can be used as long as it is a preparation for external use. For example, a liquid agent, an ointment, a poultice, an aerosol, a plaster, a liniment, a lotion, etc. Can be mentioned. In these dosage forms, an appropriate base can be used according to the dosage form, and appropriate additives can be added.
[0016]
For example, in the liquid agent, suspending agents such as gum arabic, sodium alginate, sodium carboxymethylcellulose, methylcellulose, bentonite; emulsifiers such as sodium lauryl sulfate, polysorbates, sorbitan monofatty acid esters, polyoxyethylene fatty acid esters, etc. are used. .
[0017]
The ointment may be any of an oleaginous base, a water-soluble base, an emulsion base, or a gel base. Here, examples of the oily base include mineral bases such as yellow petrolatum, white petrolatum, paraffin, liquid paraffin, plastibase, and silicone, and animal and plant bases such as vegetable oil, lard, beef tallow, and wax. Examples of the emulsion base include creams composed of various oils, surfactants and water. Examples of the water-soluble base include those having polyethylene glycol as a main base. Examples of the gel base include water-soluble polymers such as carboxyvinyl polymer and xanthan gum.
[0018]
The anti-inflammatory analgesics for external use of the present invention include benzyl alcohol, crotamiton, fatty acid polyethylene glycol esters, glycols (propylene glycol, butylene glycol, polyethylene glycol, etc.) for the purpose of improving the dissolution and feeling of use of non-steroidal anti-inflammatory agents. ) Etc. may be blended.
[0019]
The external anti-inflammatory analgesic agent of the present invention is preferably applied or affixed once or several times a day to an affected area for anti-inflammatory analgesia such as the shoulder, waist, and elbow.
[0020]
【Example】
EXAMPLES Next, although an Example is given and this invention is demonstrated in detail, this invention is not limited to this at all.
[0021]
Example 1
(1) Preparation of 50% ethanol extract of Kureo;
After pulverizing Chinese cucumber (fruit of Evodia rutaecarpa var. Bodinieri), it was extracted with 10 times the amount of 50% aqueous ethanol for 2 hours and 2 times with heat. The extract was filtered while hot, and the filtrate was concentrated under reduced pressure and freeze-dried to obtain a dry 50% ethanol extract in a yield of 44.2%.
[0022]
(2) Preparation of 70% methanol extract of Kureo;
After crushing Chinese rice cake, it was extracted with 10 times 70% aqueous methanol for 2 hours and twice. The extract was filtered while hot, and the filtrate was concentrated under reduced pressure and freeze-dried to obtain a dried 70% methanol extract in a yield of 43.4%.
[0023]
(3) preparation of an ointment;
An ointment base having the following composition was used, and indomethacin and the koji extract of the above (1) were mixed and stirred so as to be 1.0% by weight, respectively. An ointment containing 1.0% by weight of an ointment containing 1.0% by weight, and indomethacin and cucumber, respectively was prepared.
[0024]
Carboxyvinyl polymer 1.0% by weight
Benzyl alcohol 0.5% by weight
Octyldodecanol 5.0% by weight
Polyethylene glycol fatty acid ester 0.5% by weight
Diisopropanolamine 0.7% by weight
Edetate 0.01% by weight
Purified water 100% by weight
[0025]
Test Example 1 (carrageenan edema test)
Wistar male rats (140 to 160 g) were subcutaneously injected with 0.1 ml / rat of 1% carrageenan physiological saline into the right hind footpad to induce footpad edema. The foot volume was measured by the water displacement method immediately before carrageenin injection and a few hours later, and the edema rate was calculated. The test ointment [Example 1 (3)] was applied to the right hind limb at 50 mg / rat 2 hours before carrageenin injection. The results are shown in Table 1.
[0026]
[Table 1]
Figure 0003910292
[0027]
As a result, the effect of suppressing carrageenan edema was not observed in 1% salmon ointment alone. Indomethacin 1.0% alone ointment suppressed the edema in a dose-dependent manner. The combined use of indomethacin and Wulong markedly enhanced the anti-inflammatory effect of indomethacin, and the effect was significantly different from that of the indomethacin alone group.
[0028]
Test Example 2 (Anti-allergic action of Kuresu)
(1) Inhibition of histamine release from mast cells;
(1) Preparation of sensitized rat peritoneal mast cell suspension 0.5 mg of physiological saline containing 1 mg of ovalbumin (hereinafter abbreviated as EWA, type V) and 10 mg of aluminum hydroxide gel was added to the footpad of Wistar male rats. The solution was administered subcutaneously in four portions, and simultaneously, 1 ml of physiological saline containing 2 × 10 10 cells / ml of Bordetella pertussis was intraperitoneally sensitized. Seven days later, the above-described EWA physiological saline was administered into both thigh muscles of rats, and 2 × 10 10 cells / ml physiological saline was further intraperitoneally sensitized. Seven days after the additional sensitization, blood was collected from the abdominal aorta to obtain anti-EWA rat serum. Serum was stored frozen at -80 ° C.
[0029]
After 24 hours of sensitization by administering 0.5 ml of serum prepared by the above method into Wistar male rats, the rats were decapitated and immediately 10 ml of Hanks' solution (containing 10 U / ml heparin) was intraperitoneally injected. Injected. After gently massaged the abdomen for 90 seconds, the intraperitoneal fluid was collected, gently layered on 2 ml of 40% Ficoll solution, left at room temperature for 30 minutes, centrifuged at 5 ° C, 1,200 rpm for 10 minutes, and Ficoll The mast cells on the layer were collected. The mast cells were suspended in a phosphate buffer (hereinafter abbreviated as PBS, pH 7.0), washed by centrifugation three times, and again suspended in PBS (2.9 × 10 6 cells / ml). It was confirmed that the mast cell content in the suspension was 85 to 90% and the survival rate was 90% or more by the toluidine blue (0.1%, 50% ethanol solution) staining method.
[0030]
(2) Histamine release reaction test 1.8 ml of the mast cell suspension obtained in (1) was preincubated at 37 ° C. for 10 minutes and then dissolved in a test solution (10% dimethyl sulfoxide (hereinafter abbreviated as DMSO) / PBS. 0.1 ml was added and incubated for 10 minutes, and further 0.1 ml of a mixture of EWA and phosphatidyl-L-serine (final concentration EWA 2 mg / ml, phosphatidyl-L-serine 100 mg / ml) was added and incubated for 15 minutes. . The reaction was stopped by cooling with ice, and centrifuged at 5 ° C., 1,200 rpm for 5 minutes to obtain a supernatant and a sediment. The amount of histamine in the supernatant was determined by adding 1.4 ml of water, 0.4 ml of 1N NaOH, and 0.1 ml of 1% o-phthaldialdehyde / methanol solution to 0.7 ml of the supernatant and leaving it for 4 minutes. The reaction was stopped with 2 ml. Ten minutes after the completion of the reaction, the mixture was centrifuged at 3,000 rpm for 5 minutes at 5 ° C., and the fluorescence of the supernatant was measured at an excitation wavelength of 360 nm and a fluorescence wavelength of 450 nm, and the amount of histamine was determined from a histamine calibration curve at a known concentration. The amount of histamine remaining in the mast cells was sonicated by adding 2 ml of PBS to the sediment, further freeze-thawed 3 times, centrifuged at 5 ° C., 1,200 rpm for 5 minutes, and the resulting supernatant was similarly used. The histamine release rate by the antigen-antibody was determined by the following formula.
[0031]
[Expression 1]
Histamine release rate% = (Histamine release amount during antigen treatment−Histamine release amount without antigen treatment) / Total histamine amount in mast cells × 100
[0032]
The activity of the specimen was expressed as the inhibition rate according to the following formula.
[0033]
[Expression 2]
Inhibition rate% = (Histamine release rate without treatment of the subject−Histamine release rate with treatment of the subject) / Histamine release rate with no treatment of the subject × 100
[0034]
[Table 2]
Figure 0003910292
[0035]
The results are shown in Table 2. As shown in Table 2, Kureuchi extract inhibited histamine release from mast cells by antigen-antibody reaction in a dose-dependent manner.
[0036]
(2) 48-hour homologous passive cutaneous anaphylaxix (PCA) reaction test in rats involving IgE;
Anti-ovalbumin (EWA) rat serum was prepared according to the method described above. In the PCA reaction test, the back of Wistar male rats was shaved and sensitized by intradermal injection of anti-EWA rat serum diluted 8-fold or 16-fold at a dose of 0.05 ml / site, one point at a time. . 48 hours later, 0.5 ml of 1% Evans blue physiological saline containing 2 mg of EWA was injected from the tail vein, and 30 minutes later, the rats were exsanguinated to death. Was measured. The amount of the leaked pigment was measured by cutting out this blue spot, adding 1 ml of 1N potassium hydroxide solution, incubating at 37 ° C. for 48 hours, neutralizing with 2.5 ml of 0.6N phosphoric acid, and using 6.5 ml of acetone. Mix well and extract. After centrifugation at 3,000 rpm for 10 minutes, the absorbance of the supernatant was measured at 620 nm, and the amount of dye was determined from a previously prepared Evans blue calibration curve. The subject was orally administered once 1 hour before PCA induction.
[0037]
[Table 3]
Figure 0003910292
[0038]
The results are shown in Table 3. As shown in Table 3, the cucumber extract suppressed pigment leakage due to PCA reaction in a dose-dependent manner.
[0039]
(3) Picryl chloride-induced contact dermatitis (hereinafter abbreviated as PC-CD) The abdomen of ICR female mice (body weight 30 to 32 g) shaved on the day before the test was shaved, and 0.1 ml of 7% picryl chloride ethanol solution 0.1 ml Was applied and sensitized. Six days after sensitization, 0.02 ml of 1% picryl chloride-olive oil solution was applied to the right auricle of the mouse to induce. After 24 hours of induction, mice with sufficiently swollen auricles were selected, and sensitization induction was performed again. The swelling of the auricle due to PC-CD was calculated as an edema rate by measuring the thickness of the auricle immediately before and after re-induction using Dial Thickness Gauge (Ozaki Seisakusho). Subjects were orally administered twice immediately before reinduction and 16 hours later.
[0040]
[Table 4]
Figure 0003910292
[0041]
As a result, as shown in Table 4, Kureuchi extract suppressed ear-edema caused by PC-CD in a dose-dependent manner.
[0042]
Test example 3 (anti-pruritic action of wushu)
Compound-induced pruritus test;
The subject was orally administered to ddY male mice (28-30 g), and after 1 hour, 0.1 ml compound 48/80 physiological saline solution 0.1 ml was injected subcutaneously on the back as a starting material, and the mice were itchy. Invoked action. The determination of the pruritus behavior of the mouse was evaluated by counting the number of times that the mouse scratches the injection site with the hind limb as the pruritus behavior and counting that number for 10 minutes immediately after the injection.
[0043]
[Table 5]
Figure 0003910292
[0044]
The results are shown in Table 5. As shown in Table 5, the koji extract suppressed the pruritus behavior induced by compound 48/80 in a dose-dependent manner.
[0045]
As is apparent from Test Examples 2 and 3, since Kureo has antiallergic and anti-pruritic effects, an external preparation containing Kurease and a non-steroidal anti-inflammatory agent is often seen as a side effect of the external preparation. It is clear that skin symptoms such as redness and itching do not occur.
[0046]
【The invention's effect】
The external anti-inflammatory analgesic agent of the present invention is excellent in anti-inflammatory and analgesic effects, has no skin irritation, and can be suitably used as a skin external preparation, such as arthritis, rheumatism, sprains, back pain, muscle pain, etc. Inflammatory diseases can be improved.

Claims (2)

インドメタシン及び呉茱萸又はその抽出物を含有することを特徴とする皮膚外用消炎鎮痛剤。 An anti-inflammatory analgesic for external use comprising indomethacin and wushu or an extract thereof. 剤型が液剤、軟膏剤、パップ剤、エアゾール剤、硬膏剤、リニメント剤及びローション剤から選ばれるものである請求項記載の皮膚外用消炎鎮痛剤。Dosage form solutions, ointments, cataplasms, aerosols, plasters, external preparation for skin anti-inflammatory agent according to claim 1 are those selected from liniments and lotions.
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