JP2007326828A - Cyclooxygenase activity inhibitor - Google Patents

Cyclooxygenase activity inhibitor Download PDF

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JP2007326828A
JP2007326828A JP2006160802A JP2006160802A JP2007326828A JP 2007326828 A JP2007326828 A JP 2007326828A JP 2006160802 A JP2006160802 A JP 2006160802A JP 2006160802 A JP2006160802 A JP 2006160802A JP 2007326828 A JP2007326828 A JP 2007326828A
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cox
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cyclooxygenase
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spearmint
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Aki Nogimori
亜紀 野木森
Taiji Matsukawa
泰治 松川
Takeki Matsui
雄毅 松居
Yasumasa Yamada
泰正 山田
Ichiro Yamada
一郎 山田
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Uha Mikakuto Co Ltd
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Uha Mikakuto Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly safe extract exhibiting COX-inhibiting activities, preferably one exhibiting cyclooxygenase-inhibiting activities that strongly inhibits selectively cyclooxygenase-2 compared with cyclooxygenase-1, a cyclooxygenase activity inhibitor comprising the extract, and a composition comprising these. <P>SOLUTION: The extract is obtained by subjecting a spearmint to extraction with an organic solvent or an organic solvent aqueous solution and exhibits cyclooxygenase-inhibiting activities. The cyclooxygenase activity inhibitor comprises the extract. The composition comprises the extract or the cyclooxygenase activity inhibitor. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、天然物であるスペアミントから得られるシクロオキシゲナーゼ阻害活性を有するエキス、シクロオキシゲナ−ゼ活性阻害剤、およびこれらを含有する組成物に関する。   The present invention relates to an extract having cyclooxygenase inhibitory activity obtained from natural spearmint, a cyclooxygenase activity inhibitor, and a composition containing these.

シクロオキシゲナーゼ(Cyclooxygenase,以下COXと称す)は、アラキドン酸からプロスタグランジンやトロンボキサン等のケミカルメディエーターを産生するアラキドン酸カスケードの律速酵素である。生体内には、2つのCOXアイソザイムが存在し、それぞれシクロオキシゲナーゼ1型(COX−1)及びシクロオキシゲナーゼ2型(COX−2)と呼ばれている。COX−1は、血小板や胃、血管内皮細胞など多くの細胞に恒常的に発現しており、血小板凝集、胃酸分泌抑制作用、胃粘膜保護などの作用を有し、生体の保護に関わる。COX−2は炎症性刺激やホルモン刺激によってその産生が誘導される誘導型酵素であり、発熱、発痛、浮腫などの炎症といった反応を担っているプロスタグランジン類を産生すると考えられている。   Cyclooxygenase (hereinafter referred to as COX) is a rate-limiting enzyme of the arachidonic acid cascade that produces chemical mediators such as prostaglandins and thromboxanes from arachidonic acid. There are two COX isozymes in the living body, which are called cyclooxygenase type 1 (COX-1) and cyclooxygenase type 2 (COX-2), respectively. COX-1 is constitutively expressed in many cells such as platelets, stomach, and vascular endothelial cells, and has effects such as platelet aggregation, gastric acid secretion inhibitory action, and gastric mucosa protection, and is involved in the protection of living organisms. COX-2 is an inducible enzyme whose production is induced by inflammatory stimuli or hormonal stimuli, and is thought to produce prostaglandins responsible for reactions such as fever, pain, and inflammation such as edema.

アスピリンやインドメタシンなどのこれまでに知られる非ステロイド系抗炎症剤はCOX−1、COX−2ともによく阻害する。このときCOX−2だけでなく、COX−1も強く阻害されることから、消化性潰瘍、めまいなどの副作用が生じる。これらのことから、より副作用が少ない、つまりCOX−2に対する選択性の高いCOX活性阻害剤で、安全性の高いCOX活性阻害剤の開発が望まれている(例えば、特許文献1、非特許文献1)。
特開2006−76910号公報 FitzGerald GA.Nature Reviews 2:879−890,2003
Non-steroidal anti-inflammatory agents known to date such as aspirin and indomethacin well inhibit both COX-1 and COX-2. At this time, not only COX-2 but also COX-1 is strongly inhibited, which causes side effects such as peptic ulcer and dizziness. From these facts, development of a highly safe COX activity inhibitor with less side effects, that is, a highly selective COX activity inhibitor with respect to COX-2 is desired (for example, Patent Document 1, Non-Patent Document). 1).
JP 2006-76910 A FitzGerald GA. Nature Reviews 2: 879-890, 2003.

本発明の課題は、COX阻害活性を有する、好ましくはCOX−1に比べてCOX−2を選択的に強く阻害するシクロオキシゲナーゼ阻害活性を有する安全性の高いエキス、該エキスを含有するシクロオキシゲナ−ゼ活性阻害剤、およびこれらを含有する組成物を提供することを目的とする。   An object of the present invention is to provide a highly safe extract having cyclooxygenase inhibitory activity having COX inhibitory activity, preferably selectively selectively inhibiting COX-2 as compared with COX-1, and cyclooxygenase activity containing the extract It aims at providing the inhibitor and the composition containing these.

本発明者らは、安全性の観点から、食用素材の抽出物について、イン・ビトロ(in vitro)での系を用いてCOX阻害物質の検索を行った。その結果、スペアミントに高いCOX阻害活性があることを見出し、本発明の完成に至った。
すなわち、本発明の要旨は、
〔1〕 スペアミントを有機溶媒又は有機溶媒水溶液により抽出して得られ、かつCOX阻害活性を含有することを特徴とするエキス(以下、COX阻害活性エキスともいう)、
〔2〕 シクロオキシゲナーゼ1型に比べ、シクロオキシゲナーゼ2型をより強く阻害することを特徴とする前記〔1〕記載のエキス、
〔3〕 前記〔1〕または〔2〕記載のエキスを含有してなるCOX活性阻害剤、
〔4〕 前記〔1〕もしくは〔2〕記載のエキスまたは前記〔3〕記載のCOX活性阻害剤を含有することを特徴とする組成物、に関する。
From the viewpoint of safety, the present inventors conducted a search for COX inhibitors using an in vitro system for extracts of edible materials. As a result, it was found that spearmint has high COX inhibitory activity, and the present invention has been completed.
That is, the gist of the present invention is as follows.
[1] An extract obtained by extracting spearmint with an organic solvent or an organic solvent aqueous solution and containing COX inhibitory activity (hereinafter also referred to as COX inhibitory activity extract),
[2] The extract according to the above [1], which inhibits cyclooxygenase type 2 more strongly than cyclooxygenase type 1,
[3] A COX activity inhibitor comprising the extract according to [1] or [2],
[4] A composition comprising the extract according to [1] or [2] or the COX activity inhibitor according to [3].

本発明のスペアミント抽出エキスは、食品由来のため、安全性の高いものである。また、本発明のCOX活性阻害剤は、COX−1の阻害活性は緩和でありながら、COX−2には比較的強い阻害活性を有しているというCOX−2に対して選択的な阻害活性を示すことから、副作用が少ないと期待される。ここでいうCOX−2に対する選択性とは、COX−1とCOX−2のIC50値の比率(COX−1/COX−2)が1.5以上の数を示す。なお、IC50値は、後述の実施例に記載の方法で測定された値である。   Since the spearmint extract of the present invention is derived from food, it is highly safe. In addition, the COX activity inhibitor of the present invention is selective for COX-2, which has a relatively strong inhibitory activity for COX-2, while the inhibitory activity for COX-1 is moderate. Therefore, it is expected that there are few side effects. The selectivity with respect to COX-2 here is a number in which the ratio (COX-1 / COX-2) of ICX values of COX-1 and COX-2 is 1.5 or more. In addition, IC50 value is a value measured by the method as described in the below-mentioned Example.

更に、本発明は食品組成物をはじめ、外用剤組成物、医薬品組成物並びに医薬部外品組成物への応用が可能であり、COX活性阻害作用に基づき、炎症を伴う様々な疾患、機能低下の予防及び改善効果が期待される。   Furthermore, the present invention can be applied to food compositions, external preparation compositions, pharmaceutical compositions, and quasi-drug compositions, and is based on COX activity inhibitory action, causing various diseases and functional declines associated with inflammation. Prevention and improvement effects are expected.

本発明で使用するスペアミントは、地中海沿岸が原産のシソ科ハッカ属の植物であり、学名メンタ・スピカタ(Mentha spicata)が挙げられる。エキスの抽出試料として用いられるスペアミントは、葉をミキサーなどで粉砕したものを用いることが出来る。スペアミントは古代ギリシアの頃から使用される、非常に食経験の長い植物である。また、エッセンシャルオイルは偏頭痛やリューマチ、筋肉痛の緩和剤として使用されてきたが、その作用機構について調べられることはなかった。   The spearmint used in the present invention is a plant belonging to the genus Labiatae native to the Mediterranean coast and includes the scientific name Menta spicata. As the spearmint used as an extract sample, the leaf pulverized with a mixer or the like can be used. Spearmint is a very edible plant that has been used since ancient Greece. Essential oil has been used as a mitigation agent for migraine, rheumatism, and muscle pain, but its mechanism of action has not been investigated.

本発明で使用するスペアミント試料として、枝や花も含み得る。これらもミキサーなどで粉砕したものが用いられる。また、粉砕するには試料は乾燥していることが好ましいが、乾燥状態は限定されない。   Spearmint samples used in the present invention can also include branches and flowers. These are also pulverized with a mixer or the like. In addition, the sample is preferably dried for pulverization, but the dry state is not limited.

抽出溶媒としては、有機溶媒または有機溶媒水溶液が用いられる。有機溶媒としては、例えばメタノール、エタノール、プロパノール、ブタノールなどの低級アルコールや酢酸エチルなどのエステル類が挙げられるが、これらに限定されるものではない。また、これらの有機溶媒は単独又は2種類以上を混合して用いても良く、またこれらと水の混合溶媒である有機溶媒水溶液としても良い。なお、安全性の点からは、エタノール又はエタノール水溶液で抽出することが好ましい。また、有機溶媒どうしまたは有機溶媒と水とを混合する場合の、各溶媒の比率としては特に限定はない。   As the extraction solvent, an organic solvent or an organic solvent aqueous solution is used. Examples of the organic solvent include, but are not limited to, lower alcohols such as methanol, ethanol, propanol, and butanol, and esters such as ethyl acetate. These organic solvents may be used alone or in combination of two or more, or may be an organic solvent aqueous solution which is a mixed solvent of these and water. From the viewpoint of safety, it is preferable to extract with ethanol or an aqueous ethanol solution. In addition, the ratio of each solvent in the case of mixing organic solvents or organic solvent and water is not particularly limited.

抽出方法としては、例えば、前記スペアミント試料と前記抽出溶媒とを混合し、室温で1−5時間撹拌又は抽出溶媒の煮沸温度で1−5時間還流して抽出を行った後、ろ過や遠心分離などにより抽出液から試料残渣を取り除き、減圧又は限外ろ過により抽出物を濃縮する方法が挙げられる。更に、必要に応じて抽出溶媒を完全に除去して乾固、凍結乾燥などにより乾燥しても良い。   As an extraction method, for example, the spearmint sample and the extraction solvent are mixed and stirred at room temperature for 1-5 hours or refluxed at the boiling temperature of the extraction solvent for 1-5 hours for extraction, followed by filtration or centrifugation. For example, the sample residue is removed from the extract by, for example, and the extract is concentrated by reduced pressure or ultrafiltration. Further, if necessary, the extraction solvent may be completely removed and dried by solidification or lyophilization.

前記のようにして得られるCOX阻害活性エキスは、COX−1に比べてCOX−2を選択的に強く阻害するCOX阻害活性を有する。ここで、COX阻害活性は、後述の実施例に記載の方法で測定される。   The COX inhibitory activity extract obtained as described above has COX inhibitory activity that selectively and strongly inhibits COX-2 as compared to COX-1. Here, the COX inhibitory activity is measured by the method described in Examples below.

なお、前記COX阻害活性エキスを、極性の低い有機溶媒で分配した油層(例えば、酢酸エチル層や1−ブタノール層)由来のエキスにCOX阻害活性が認められ、極性の高い溶媒層(例えば、水層)由来のエキスにはCOX阻害活性は認められなかった。前記酢酸エチル層や1−ブタノール層によって分配することにより、より精製されたCOX阻害活性エキスを得ることができる。   The extract derived from an oil layer (for example, ethyl acetate layer or 1-butanol layer) obtained by distributing the COX inhibitory activity extract with a low polarity organic solvent has COX inhibitory activity, and a highly polar solvent layer (for example, water The COX inhibitory activity was not observed in the extract derived from the layer). By partitioning with the ethyl acetate layer or 1-butanol layer, a more purified COX inhibitory activity extract can be obtained.

本発明のCOX阻害活性エキスは、CO活性X阻害剤として使用することが出来る。従って、本発明は、前記COX阻害活性エキスを含有してなるCOX活性阻害剤に関する。   The COX inhibitory activity extract of the present invention can be used as a CO active X inhibitor. Therefore, the present invention relates to a COX activity inhibitor comprising the COX inhibitory activity extract.

前記COX活性阻害剤には、有効成分として前記COX阻害活性エキスを含有しているため、COX−1に比べ、COX−2をより強く阻害することを特徴とするものである。前記COX活性阻害剤は、前記エキスによるCOX阻害活性を損なわなければ、他の成分を混合しても良い。他の成分としては、特に限定は無い。   Since the COX activity inhibitor contains the COX inhibitory activity extract as an active ingredient, it inhibits COX-2 more strongly than COX-1. The COX activity inhibitor may be mixed with other components as long as the COX inhibitory activity of the extract is not impaired. There is no limitation in particular as another component.

前記COX阻害活性エキスまたは前記COX活性阻害剤は、各種基材に配合して組成物としても良い。配合量や基材の種類は特に限定されるものではなく、適時設定すれば良い。基材としては、食品、医薬品、医薬部外品などに用いられる物であれば特に限定は無く、例えば経口投与基材としては、錠剤、カプセル、飴、グミ或いは飲料などが挙げられる。これらの各種基材への配合方法としては、食品、医薬品、医薬部外品などの分野の公知の技術を用いて、製造することが出来る。   The COX inhibitory activity extract or the COX activity inhibitor may be blended with various base materials to form a composition. The blending amount and the type of base material are not particularly limited, and may be set as appropriate. The base material is not particularly limited as long as it is a product used for foods, pharmaceuticals, quasi drugs, and the like, and examples of the oral administration base material include tablets, capsules, candy, gummi, and beverages. As a blending method for these various base materials, it can be produced by using known techniques in the fields of foods, pharmaceuticals, quasi drugs and the like.

以下、本発明を実施例により具体的に説明するが、本発明はこれらによって制限されるものではない。   EXAMPLES Hereinafter, the present invention will be specifically described with reference to examples, but the present invention is not limited thereto.

(実施例1)
スペアミント粉末10.0gに対して100mlのエタノールを加え、室温で1時間撹拌した。抽出液をろ紙でろ過し、減圧下のロータリーエバポレーターでろ液を濃縮した。10.0gの試料から0.42gの抽出物を得た。抽出物をジメチルスルホキシドに後述のような濃度になるよう溶解し、スペアミントエキスとして以下の実験に用いた。
Example 1
100 ml of ethanol was added to 10.0 g of spearmint powder and stirred at room temperature for 1 hour. The extract was filtered through filter paper, and the filtrate was concentrated with a rotary evaporator under reduced pressure. 0.42 g of extract was obtained from a 10.0 g sample. The extract was dissolved in dimethyl sulfoxide to a concentration as described later and used as a spearmint extract in the following experiments.

〔試験例1〕COX活性阻害試験
カイマン・ケミカル(Cayman chemical)社のコックス・インヒビター・スクリーニング・アッセイ(COX Inhibitor Screening Assay、カタログ番号No.560131)を用いて試験を行った。
Test Example 1 COX Activity Inhibition Test A test was conducted using a Cayman chemical Cox inhibitor screening assay (COX Inhibitor Screening Assay, catalog number 560131).

(試料溶液)
実施例1にて得たスペアミントエキスを抽出物濃度が10、1.0、0.1、0.01mg/mlとなるよう、ジメチルスルホキシドにて適宜希釈したものを用いた。対照として、いずれのエキスも含有していないジメチルスルホキシドを陰性対照として用いた。また、陽性対照として、ジメチルスルホキシドにインドメタシン(SIGMA社製)、「NS−398」(CALBIOCHEM社製)、イブプロフェン(和光純薬社製)を溶解したものを用いた。
(Sample solution)
The spearmint extract obtained in Example 1 was appropriately diluted with dimethyl sulfoxide so that the extract concentration was 10, 1.0, 0.1, or 0.01 mg / ml. As a control, dimethyl sulfoxide containing no extract was used as a negative control. Moreover, what dissolved indomethacin (made by SIGMA), "NS-398" (made by CALBIOCHEM), and ibuprofen (made by Wako Pure Chemical Industries) in dimethylsulfoxide was used as a positive control.

(方法)
酵素液であるCOX液に、基質であるアラキドン酸を添加し、プロスタグランジンの生成反応を行った(以降、COX反応という)。この時調整した各試料溶液をキットの試験法に従い添加し、プロスタグランジンの生成量への影響を調べた。COX反応によって生成されたプロスタグランジンは酵素免疫測定法(EIA法)を利用して定量した。この時、対照として用いられている化合物インドメタシンは、COX−1、COX−2両方の活性を阻害する化合物として知られている。また、NS−398はCOX−2を特異的に、イブプロフェンはCOX−1を特異的に阻害する化合物である。(例えば、Timothy D.Warner.et al. Proc.Natl.Acad.Sci.(1999);96:7563−68参照)酵素活性阻害率は対照群に対する各試料溶液のプロスタグランジン産生量から算出した。この結果を用いて各阻害剤のIC50値(50%活性阻害を示す阻害剤量)を求めた。結果を表1に示す。
(Method)
Arachidonic acid as a substrate was added to a COX solution as an enzyme solution to perform a prostaglandin production reaction (hereinafter referred to as COX reaction). Each sample solution prepared at this time was added according to the test method of the kit, and the influence on the production amount of prostaglandins was examined. Prostaglandins produced by the COX reaction were quantified using an enzyme immunoassay (EIA method). At this time, the compound indomethacin used as a control is known as a compound that inhibits the activities of both COX-1 and COX-2. NS-398 is a compound that specifically inhibits COX-2, and ibuprofen is a compound that specifically inhibits COX-1. (See, for example, Timothy D. Warner. Et al. Proc. Natl. Acad. Sci. (1999); 96: 7563-68) The enzyme activity inhibition rate was calculated from the amount of prostaglandin produced in each sample solution relative to the control group. . Using this result, the IC50 value (inhibitor amount showing 50% activity inhibition) of each inhibitor was determined. The results are shown in Table 1.

Figure 2007326828
Figure 2007326828

表1より、実施例1で得られた本発明品であるスペアミント抽出物にはCOX−1、COX−2に対して阻害活性が認められた。更に詳しくは、本発明品であるスペアミント抽出物は、NS−398と同様に、COX−1/COX−2が1.5以上の値を示した。つまり、COX−1に比べてCOX−2の選択性を認めた。よって、本発明品は炎症時などで発現されるCOX−2を特異的に抑制する傾向にあることが期待される。   From Table 1, the spearmint extract which is the product of the present invention obtained in Example 1 showed inhibitory activity against COX-1 and COX-2. More specifically, the spearmint extract, which is the product of the present invention, showed a value of COX-1 / COX-2 of 1.5 or more, like NS-398. That is, the selectivity of COX-2 was recognized compared with COX-1. Therefore, it is expected that the product of the present invention tends to specifically suppress COX-2 expressed during inflammation.

(実施例2)
スペアミント粉末30.0gに対して300mlのエタノールを加え、室温で1時間撹拌した。抽出液をろ紙でろ過し、減圧下のロータリーエバポレーターでろ液を濃縮した。30.0gの試料から0.88gの抽出物を得た。
(Example 2)
300 ml of ethanol was added to 30.0 g of spearmint powder and stirred at room temperature for 1 hour. The extract was filtered through filter paper, and the filtrate was concentrated with a rotary evaporator under reduced pressure. 0.88 g of extract was obtained from 30.0 g of sample.

上記のスペアミント抽出物を水と酢酸エチルを用いて分配を行った。得られた抽出物を酢酸エチル(40ml)と水(40ml)の混合溶液中で溶解し、静置した後に上層を酢酸エチル画分として回収した。この操作を計3回繰り返し、約120mlの酢酸エチル層画分を得た。更にこの溶液画分をロータリーエバポレーターにより乾固し、0.36gの酢酸エチル抽出画分を得た。水層については、更に1‐ブタノールを加え、同様に分配を行い、0.35gの水層抽出画分と0.16gのブタノール層抽出画分を得た。更に、各抽出画分の濃度が1mg/mlとなるようジメチルスルホキシドに溶解した。   The above spearmint extract was partitioned using water and ethyl acetate. The obtained extract was dissolved in a mixed solution of ethyl acetate (40 ml) and water (40 ml) and allowed to stand, and then the upper layer was collected as an ethyl acetate fraction. This operation was repeated a total of 3 times to obtain about 120 ml of an ethyl acetate layer fraction. Further, this solution fraction was dried by a rotary evaporator to obtain 0.36 g of an ethyl acetate extract fraction. For the aqueous layer, 1-butanol was further added, and partitioning was performed in the same manner to obtain 0.35 g of an aqueous layer extraction fraction and 0.16 g of a butanol layer extraction fraction. Further, each extract fraction was dissolved in dimethyl sulfoxide so that the concentration was 1 mg / ml.

(試験例2)
試験例1と同様の方法で、実施例2で得られたスペアミント分画エキスのCOX活性阻害率を算出した。COX−1については、酢酸エチル層(AcOEt)で77.51%、ブタノール層(BuOH)では62.78%の阻害が認められたが、水層は陰性対照と同程度であった。同様にCOX−2についても酢酸エチル層で99.44%、ブタノール層で98.91%の阻害が認められたが、水層での阻害は認められなかった(図1参照)。
(Test Example 2)
In the same manner as in Test Example 1, the COX activity inhibition rate of the spearmint fraction extract obtained in Example 2 was calculated. For COX-1, 77.51% inhibition was observed in the ethyl acetate layer (AcOEt) and 62.78% inhibition in the butanol layer (BuOH), but the aqueous layer was comparable to the negative control. Similarly, for COX-2, 99.44% inhibition was observed in the ethyl acetate layer and 98.91% inhibition in the butanol layer, but no inhibition was observed in the aqueous layer (see FIG. 1).

(試験例3)
実施例2で製造したスペアミント分画エキスを1.0、0.1、0.01mg/mlとなるよう、ジメチルスルホキシドにて調整した。対照として、インドメタシンをジメチルスルホキシドに溶解したものを用いた。
(Test Example 3)
The spearmint fraction extract produced in Example 2 was adjusted with dimethyl sulfoxide so as to be 1.0, 0.1, and 0.01 mg / ml. As a control, indomethacin dissolved in dimethyl sulfoxide was used.

試験例1と同様の方法で、上記スペアミント分画エキスのCOX活性阻害率を算出した。この結果を用いて各阻害剤のIC50値を求めた。結果を表2に示す。   In the same manner as in Test Example 1, the COX activity inhibition rate of the spearmint fraction extract was calculated. IC50 value of each inhibitor was calculated | required using this result. The results are shown in Table 2.

Figure 2007326828
Figure 2007326828

表2より、スペアミントエキスのブタノール層画分から得られたエキスにはインドメタシンのCOX−2阻害活性と同程度又はそれ以上の酵素阻害活性が見られた。一方、スペアミントの酢酸エチル層画分から得られたエキスには、ブタノール層画分に比べて約1.5分の1の阻害活性が認められたが、水層画分にはほとんど活性が見られなかった。   From Table 2, the enzyme inhibitory activity comparable to or higher than the COX-2 inhibitory activity of indomethacin was found in the extract obtained from the butanol layer fraction of spearmint extract. On the other hand, the extract obtained from the ethyl acetate layer fraction of spearmint showed an inhibitory activity of about 1 / 1.5 compared with the butanol layer fraction, but the aqueous layer fraction showed almost the activity. There wasn't.

本発明のCOX活性阻害エキスは、安全性の高いCOX活性阻害剤、好ましくはCOX−1に比べてCOX−2をより強く阻害する安全性の高いCOX活性阻害剤として好適に使用することが出来る。   The COX activity inhibitory extract of the present invention can be suitably used as a highly safe COX activity inhibitor, preferably a highly safe COX activity inhibitor that inhibits COX-2 more strongly than COX-1. .

図1は、実施例2の分配操作によるスペアミントの各抽出画分を用いて、試験例1と同様の方法でCOX活性阻害実験を行い、分析した結果を示すグラフである。縦軸は阻害物を含んでいない場合の活性を100とし、化合物又は抽出エキスを添加した場合の活性を100から差し引いた分を阻害率(%)として相対的に表したものである。FIG. 1 is a graph showing the results of an analysis of COX activity inhibition conducted by the same method as in Test Example 1 using each extracted fraction of spearmint by the partitioning operation of Example 2. The vertical axis shows the activity when no inhibitor is contained as 100, and the activity obtained when the compound or extract is added is subtracted from 100 as the inhibition rate (%).

Claims (4)

スペアミントを有機溶媒又は有機溶媒水溶液により抽出して得られ、かつシクロオキシゲナーゼ阻害活性を含有することを特徴とするエキス。   An extract obtained by extracting spearmint with an organic solvent or an aqueous organic solvent solution and containing cyclooxygenase inhibitory activity. シクロオキシゲナーゼ1型に比べ、シクロオキシゲナーゼ2型をより強く阻害することを特徴とする請求項1記載のエキス。   The extract according to claim 1, which inhibits cyclooxygenase type 2 more strongly than cyclooxygenase type 1. 請求項1または2記載のエキスを含有してなるシクロオキシゲナーゼ活性阻害剤。   A cyclooxygenase activity inhibitor comprising the extract according to claim 1 or 2. 請求項1もしくは2記載のエキスまたは請求項3記載のシクロオキシゲナーゼ活性阻害剤を含有することを特徴とする組成物。

A composition comprising the extract according to claim 1 or 2 or the cyclooxygenase activity inhibitor according to claim 3.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010138095A (en) * 2008-12-10 2010-06-24 Kinki Univ Cyclooxygenase-2 inhibitor and cosmetic containing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010138095A (en) * 2008-12-10 2010-06-24 Kinki Univ Cyclooxygenase-2 inhibitor and cosmetic containing the same

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