JP5037821B2 - Treatment for ringworm - Google Patents

Treatment for ringworm Download PDF

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JP5037821B2
JP5037821B2 JP2005379492A JP2005379492A JP5037821B2 JP 5037821 B2 JP5037821 B2 JP 5037821B2 JP 2005379492 A JP2005379492 A JP 2005379492A JP 2005379492 A JP2005379492 A JP 2005379492A JP 5037821 B2 JP5037821 B2 JP 5037821B2
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caffeine
tea catechins
ringworm
2000ppm
trichophyton
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JP2007176884A (en
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啓介 松浦
裕由 小川
慶一 後藤
征彦 原
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Mitsui Norin Co Ltd
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本発明は、少量の有効成分で優れた効力を有する白癬治療剤に関する。   The present invention relates to a therapeutic agent for ringworm having excellent efficacy with a small amount of an active ingredient.

人間の表皮は、外側から角質層、顆粒層、有棘層、基底層という構造になっている。これらのうち角質層は死細胞からできており、ケラチンが主要構成成分である。また、毛髪や爪も角質層と同じくケラチンからできている。これらの部位には血管などが無いため、白血球などの遊走細胞や血清中の殺菌物質の影響が及ばない。白癬菌は好ケラチン性真菌であり、表皮角質層、毛髪、爪などの部位に感染しやすい。角質層ではヒトの免疫機構の影響を受けにくいが、それよりも内側の顆粒層や有棘層などでは白血球などの直接的攻撃に曝露されるため、白癬菌は通常は角質層中のみに繁殖がとどまる。しかし、白癬菌により産生される酵素や代謝産物によって顆粒層よりも内側の細胞が刺激されることで人体の防御機構が働き、その結果として痒みなどの白癬症状が現出する(非特許文献1)。
白癬菌は培地上では栄養菌糸の伸長による他に、小分生子、大分生子、分節胞子(球状の厚壁胞子に移行)を形成するが、角質層中では栄養菌糸と、分節・肥厚による厚膜胞子形成による繁殖を行う。厚膜胞子は耐久細胞であり、白血球や血清中の殺菌物質の曝露に対して、栄養菌糸に比べはるかに高い生残性を有している。また、厚膜胞子の耐久性に加え、角質層は外部および内部からの薬剤浸透性が悪いことから、白癬の治療には外用剤、内服剤いずれを用いる場合でも長期間を要する。今日、外用剤としてベンジルアミン系抗真菌剤(一般名:塩酸ブテナフィン)が、外用剤および内服剤としてアリルアミン系抗真菌剤(一般名:塩酸テルビナフィン)が頻用されるが、これらは真菌の細胞膜の構成成分であるエルゴステロール合成経路のスクアレンエポキシダーゼを選択的に阻害し、スクアレンの蓄積およびエルゴステロール含量の低下により抗真菌活性をあらわす。しかし、同時にヒトのスクアレンエポキシダーゼに対しても弱い阻害性を有しているため、これらの薬剤については、接触皮膚炎や刺激感などの副作用が報告されている(非特許文献2・非特許文献3)。また、外用剤および内服剤としてアゾール系抗真菌剤(一般名:イトラコナゾール(トリアゾール系)、ミコナゾール(イミダゾール系)など)も利用されているが、これらアゾール系に共通の作用機序はエルゴステロール合成経路のチトクロームP450(ラノステロール14α-デメチラーゼ)を選択的に阻害することであるため、この種の薬剤はヒト肝臓の主要代謝酵素であるP450に対しても弱い阻害活性を有している。そのため、副作用として肝臓障害の報告例や併用薬剤の制限などがある(非特許文献4・非特許文献5)。
従って、人体への安全面から真菌に対して選択的に作用する抗真菌剤の開発が求められている。また、現在のところ抗真菌剤に耐性を獲得した白癬菌の報告はないが(非特許文献6)、今後、薬剤を安易に広範囲で用いることによる耐性菌の出現も否定できない。このような背景のもと、現在では人体への安全面などを考慮して、化学合成品だけではなく植物抽出液や天然化合物の抗真菌作用に着目した研究が行われており、これまでに、ユーカリ属植物葉(特許文献1)、生姜の抽出物(特許文献2)、アミノ酸のポリマー(特許文献3)、多糖類の混合物(特許文献4)などに白癬菌に対する抗菌作用があることが報告されている。
The human epidermis has a stratum corneum, granule layer, spiny layer, and basal layer from the outside. Of these, the stratum corneum is composed of dead cells, and keratin is the main constituent. Hair and nails are also made of keratin, like the stratum corneum. Since these sites have no blood vessels, they are not affected by migrating cells such as leukocytes or bactericidal substances in serum. Ringworm is a keratinous fungus and easily infects the parts of the epidermis, hair, nails and the like. The stratum corneum is less susceptible to human immune mechanisms, but the inner granular layer and spiny layer are exposed to direct attacks such as leukocytes, so that ringworms usually propagate only in the stratum corneum. Will stay. However, the defense mechanism of the human body works by stimulating cells inside the granular layer by enzymes and metabolites produced by ringworm, and as a result, ringworm symptoms such as itch appear (Non-Patent Document 1). ).
Ringworms form small conidia, large conidia, and segmental spores (transfer to spherical thick-walled spores) in addition to the growth of vegetative hyphae on the medium, but in the stratum corneum, vegetative mycelia and thickness due to segmentation and thickening Breeding by membrane spore formation. Thick spore is a durable cell and has much higher survival than vegetative mycelium when exposed to white blood cells and serum bactericides. In addition to the durability of thick film spores, the stratum corneum has poor drug permeability from the outside and inside, and therefore treatment of ringworm requires a long period of time regardless of whether an external preparation or an internal preparation is used. Today, benzylamine antifungal agents (generic name: butenafine hydrochloride) are frequently used as external preparations, and allylamine antifungal agents (generic name: terbinafine hydrochloride) are frequently used as external preparations and internal medicines. It selectively inhibits squalene epoxidase in the ergosterol synthesis pathway, which is a component, and exhibits antifungal activity by reducing squalene accumulation and ergosterol content. However, it also has a weak inhibitory effect on human squalene epoxidase, and side effects such as contact dermatitis and irritation have been reported for these drugs (Non-patent Document 2 / Non-patent) Reference 3). In addition, azole antifungal agents (generic names: itraconazole (triazole), miconazole (imidazole), etc.) are also used as topical and internal preparations, but ergosterol synthesis is common to these azoles. Because it selectively inhibits the cytochrome P450 (lanosterol 14α-demethylase) of the pathway, this type of drug also has a weak inhibitory activity against P450, the main metabolic enzyme of human liver. Therefore, there are reports of liver damage and restrictions on concomitant drugs as side effects (Non-patent Documents 4 and 5).
Therefore, development of an antifungal agent that selectively acts on fungi is required from the viewpoint of safety to the human body. In addition, there is currently no report of ringworm that has acquired resistance to antifungal agents (Non-patent Document 6), but it cannot be denied that resistance bacteria will appear due to easy and widespread use of drugs in the future. Against this backdrop, in consideration of the safety aspects to the human body, research focusing on the antifungal activity of plant extracts and natural compounds as well as chemically synthesized products is now underway. , Eucalyptus plant leaves (patent document 1), ginger extract (patent document 2), amino acid polymer (patent document 3), polysaccharide mixture (patent document 4) have antibacterial activity against ringworm It has been reported.

また、特許文献5では茶カテキン類に白癬菌に対する抗菌作用があることが報告されており、特許文献6ではカフェインに白癬菌に対する抗菌作用があることが報告されている。しかし、いずれの特許文献にもこれらの有効成分を併用した場合の効果については記載されておらず、また、特許文献6におけるカフェインの含有濃度は1%(10000ppm)以上と非常に高濃度である。
特開平11-80012号公報 特開2002-47195号公報 特開平5-246883号公報 特開平8-333214号公報 特開平3-255033号公報 特開昭58-15919号公報 「人に棲みつくカビの話」、宮治誠、草思社、1995年 科研製薬株式会社、2005年、「メンタックスクリーム/メンタックス液/メンタックススプレー」 ノバルティスファーマ株式会社、2005年、「ラシミール液」 厚生省薬務局、1997年、医薬品副作用情報、No. 143 厚生省薬務局、1995年、医薬品副作用情報、No. 131 「白癬の免疫」古賀哲也、日本医真菌学会雑誌44巻4号、平成15年、日本医真菌学会
Patent Document 5 reports that tea catechins have an antibacterial action against ringworm, and Patent Document 6 reports that caffeine has an antibacterial action against ringworm. However, none of the patent documents describes the effects when these active ingredients are used in combination, and the concentration of caffeine in Patent Document 6 is 1% (10000 ppm) or higher, which is a very high concentration. is there.
Japanese Patent Laid-Open No. 11-80012 JP 2002-47195 A Japanese Patent Laid-Open No. 5-246883 JP-A-8-333214 Japanese Patent Laid-Open No. 3-255033 JP 58-15919 "The story of mold that rubs on people", Makoto Miyaji, Soushisha, 1995 Kaken Pharmaceutical Co., Ltd., 2005, “Mentax Cream / Mentax Solution / Mentax Spray” Novartis Pharma Co., Ltd., 2005, "Lashmir liquid" Ministry of Health and Welfare Pharmaceutical Affairs Bureau, 1997, Information on drug side effects, No. 143 Ministry of Health and Welfare Pharmaceutical Affairs Bureau, 1995, Information on drug side effects, No. 131 "Immunity of ringworm", Tetsuya Koga, Journal of the Japanese Society for Medical Mycology, Vol. 44, No. 4, 2003, Japan Society for Medical Mycology

そこで本発明は、少量の有効成分で優れた効力を有する白癬治療剤を提供することを目的とする。   Accordingly, an object of the present invention is to provide a therapeutic agent for ringworm having excellent efficacy with a small amount of an active ingredient.

本発明者らは上記目的を達成すべく鋭意検討を重ねた結果、茶カテキン類とカフェインを有効成分として組み合わせて用いることで、白癬菌に対する優れた抗菌作用が得られることを見出した。   As a result of intensive studies to achieve the above object, the present inventors have found that an excellent antibacterial action against trichomycetes can be obtained by using tea catechins and caffeine in combination as active ingredients.

本発明は上記の知見に基づいてなされたものであり、本発明の白癬治療剤は、請求項1記載の通り、茶カテキン類とカフェインを有効成分として組み合わせてなり、下記のいずれかの濃度であることを特徴とする。
治療の対象となる白癬菌がTrichophyton tonsuransの場合
(1)茶カテキン類が62.5〜500ppmかつカフェインが500〜1000ppm
(2)茶カテキン類が500〜1000ppmかつカフェインが31.25〜62.5ppm
治療の対象となる白癬菌がTrichophyton violaceumの場合
(1)茶カテキン類が31.25〜500ppmかつカフェインが500〜1000ppm
(2)茶カテキン類が500〜1500ppmかつカフェインが31.25〜62.5ppm
治療の対象となる白癬菌がTrichophyton rubrumの場合
(1)茶カテキン類が31.25〜2000ppmかつカフェインが1500〜2000ppm
(2)茶カテキン類が1000〜2000ppmかつカフェインが31.25ppm
治療の対象となる白癬菌がTrichophyton mentagrophytesの場合
(1)茶カテキン類が31.25〜2000ppmかつカフェインが1500〜2000ppm
(2)茶カテキン類が500〜750ppmかつカフェインが1000〜1500ppm
(3)茶カテキン類が1500〜2000ppmかつカフェインが31.25〜62.5ppm
また、請求項2記載の白癬治療剤は、請求項1記載の白癬治療剤において、茶カテキン類が少なくともエピガロカテキンガレートを含んでなることを特徴とする。
The present invention has been made on the basis of the above findings, and the therapeutic agent for ringworm of the present invention comprises, as described in claim 1, a combination of tea catechins and caffeine as active ingredients, and has any of the following concentrations: It is characterized by being.
Trichophyton tonsurans is the target of treatment
(1) 62.5-500ppm tea catechins and 500-1000ppm caffeine
(2) Tea catechins 500-1000ppm and caffeine 31.25-62.5ppm
Trichophyton violaceum is the target of treatment
(1) 31.25-500ppm tea catechins and 500-1000ppm caffeine
(2) 500 to 1500 ppm for tea catechins and 31.25 to 62.5 ppm for caffeine
Trichophyton rubrum is the target of treatment
(1) 31.25-2000ppm tea catechins and 1500-2000ppm caffeine
(2) 1000-2000ppm tea catechins and 31.25ppm caffeine
When Trichophyton mentagrophytes is the target for treatment (1) Tea catechins 31.25-2000ppm and caffeine 1500-2000ppm
(2) tea catechins is 500 ~750ppm and caffeine 1000 ~1500ppm
(3) tea catechins is 1500 ~2000ppm and caffeine 31.25~62.5ppm
The therapeutic agent for ringworm according to claim 2 is characterized in that, in the therapeutic agent for ringworm according to claim 1, tea catechins comprise at least epigallocatechin gallate.

本発明によれば、少量の有効成分で優れた効力を有する白癬治療剤が提供される。   According to the present invention, a therapeutic agent for ringworm having excellent efficacy with a small amount of an active ingredient is provided.

本発明の白癬治療剤は、茶カテキン類とカフェインを有効成分として組み合わせてなることを特徴とするものである。治療の対象となる白癬菌としては、例えば、トリコフィトン トンスランス(Trichophyton tonsurans)、トリコフィトン バイオラセウム(Trichophyton violaceum)、トリコフィトン ルブラム(Trichophyton rubrum)、トリコフィトン メンタグロフィテス(Trichophyton mentagrophytes)などが挙げられる。   The therapeutic agent for ringworm of the present invention is characterized by combining tea catechins and caffeine as active ingredients. Examples of trichophyton tonsurans, Trichophyton violaceum, Trichophyton rubrum, Trichophyton rubrum, Trichophyton mentagrophytes, and the like.

本発明の白癬治療剤の有効成分として機能する茶カテキン類は、茶の成分として含まれるカテキン(C)、ガロカテキン(GC)、カテキンガレート(Cg)、ガロカテキンガレート(GCg)、エピカテキン(EC)、エピガロカテキン(EGC)、エピカテキンガレート(ECg)、エピガロカテキンガレート(EGCg)などのカテキンを意味する。これらのカテキンは(+)体であっても(-)体であってもよい。また、これらのカテキンは単独で用いてもよいし、複数種類を混合して用いてもよい。茶カテキン類は、主にツバキ科ツバキ属に属するチャ(Camellia sinensis)から得られる葉、茎、木部、樹皮、根、実、種子のいずれかあるいはこれらの2種類以上の混合物もしくはそれらの粉砕物から水、熱水、有機溶媒、含水有機溶媒あるいはこれらの混合物などにより抽出することで得ることができる。茶カテキン類は、茶生葉あるいはその乾燥物から水、熱水、有機溶媒、含水有機溶媒あるいはこれらの混合物などを用いて得られる抽出物自体やこれを必要に応じて精製して得られる精製物であってもよい。茶カテキン類の精製物は、特公平1-44234号公報、特公平2-12474号公報、特公平2-22755号公報、特開平4-20589号公報、特開平5-260907号公報、特開平8-109178号公報などに記載された方法により得ることができ、例えば、茶葉を上記のような溶媒で抽出して得られた抽出物を、有機溶媒分画や吸着樹脂などを用いることで所望の程度に精製できる。茶カテキン類は市販されているものもあり、例えば、三井農林(株)製「ポリフェノン」を好適に用いることができる他、太陽化学(株)製「サンフェノン」や(株)伊藤園製「テアフラン」などを用いることもできる。茶カテキン類には少なくともエピガロカテキンガレートが含まれていることが望ましい。   Tea catechins functioning as an active ingredient of the therapeutic agent for ringworm of the present invention include catechin (C), gallocatechin (GC), catechin gallate (Cg), gallocatechin gallate (GCg), epicatechin (EC) contained as tea components. ), Epigallocatechin (EGC), epicatechin gallate (ECg), and epigallocatechin gallate (EGCg). These catechins may be in the (+) form or the (-) form. Moreover, these catechins may be used independently and may be used in mixture of multiple types. Tea catechins are leaves, stems, xylem, bark, roots, seeds, seeds, or a mixture of two or more of these, or pulverization of them, mainly from tea belonging to the camellia family Camellia sinensis The product can be obtained by extraction with water, hot water, an organic solvent, a water-containing organic solvent, or a mixture thereof. Tea catechins are extracts obtained from fresh tea leaves or their dried products using water, hot water, organic solvents, hydrous organic solvents, or mixtures thereof, or purified products obtained by purifying them as necessary. It may be. Refined tea catechins are disclosed in JP-B 1-444234, JP-B 2-12474, JP-B 2-22755, JP 4-20589, JP 5-260907, JP 8-109178 can be obtained by a method described in, for example, an extract obtained by extracting tea leaves with a solvent such as that described above by using an organic solvent fraction or an adsorption resin. Can be purified to the extent of Some tea catechins are commercially available. For example, “Polyphenone” manufactured by Mitsui Norin Co., Ltd. can be suitably used, “Sunphenon” manufactured by Taiyo Kagaku Co., Ltd., and “Theafuran” manufactured by ITO EN Co., Ltd. Etc. can also be used. It is desirable that tea catechins contain at least epigallocatechin gallate.

本発明の白癬治療剤の有効成分として機能するカフェインは、茶やコーヒー豆などに含まれるプリン誘導体であることは周知の通りである。カフェインは天然から単離・精製されたものであってもよいし、化学合成品であってもよい。   As is well known, caffeine, which functions as an active ingredient of the therapeutic agent for ringworm of the present invention, is a purine derivative contained in tea and coffee beans. Caffeine may be isolated and purified from nature, or may be a chemically synthesized product.

茶カテキン類とカフェインの好適な混合比率や混合濃度は、白癬菌の菌種により異なるが、本発明の白癬治療剤を外用剤としてローション剤などの液状剤とした場合、カフェインの含有濃度を5000ppm未満という特許文献6に記載されているカフェインの含有濃度の1/2未満としても、茶カテキン類とカフェインの白癬菌に対する相乗効果による優れた抗菌作用が得られる混合比率や混合濃度を見出すことができる。なお、本発明の白癬治療剤の剤型は液状剤に限定されるわけではなく、軟膏剤やクリーム剤などの形態であってもよい。また、必要に応じて界面活性剤や保湿剤などの当業者が通常用いる成分を配合してもよい。その用法容量は、患者の年齢、性別、体重、体調、症状などによって適宜設定することができる。   The preferred mixing ratio and concentration of tea catechins and caffeine vary depending on the species of ringworm, but when the ringworm therapeutic agent of the present invention is used as a liquid agent such as a lotion agent, the caffeine content concentration Even if the concentration of caffeine is less than 1/2 of the concentration of caffeine described in Patent Document 6 of less than 5000 ppm, a mixing ratio and concentration that can provide an excellent antibacterial effect due to the synergistic effect of tea catechins and caffeine on ringworm Can be found. In addition, the dosage form of the therapeutic agent for ringworm of the present invention is not limited to a liquid agent, and may be in the form of an ointment, a cream or the like. Moreover, you may mix | blend the component normally used by those skilled in the art, such as surfactant and a moisturizer, as needed. The usage volume can be appropriately set depending on the age, sex, weight, physical condition, symptoms, etc. of the patient.

以下に実施例を挙げ、本発明をさらに詳しく説明する。ただし、本発明は以下の記載に限定して解釈されるものではない。   The following examples further illustrate the present invention. However, the present invention is not construed as being limited to the following description.

実施例A:
(実験方法)
1.実験に用いた白癬菌の菌株
Trichophyton tonsurans(NBRC5971)
Trichophyton violaceum(NBRC31064)
いずれも培養はPDA培地を用いて行い、培養温度は25℃とした。
Example A:
(experimental method)
1. Trichophyton strains used in the experiment
Trichophyton tonsurans (NBRC5971)
Trichophyton violaceum (NBRC31064)
In both cases, the culture was performed using PDA medium, and the culture temperature was 25 ° C.

2.実験に用いた有効成分
茶カテキン類として三井農林(株)製のエピガロカテキンガレート(EGCg)を用いた。カフェインはナカライテスク(株)より購入した。EGCgおよびカフェインは、培地中の終濃度が31.25,62.5,125,250,500,750,1000,1500および2000ppmとなるように調整して実験を行った。
2. Epigallocatechin gallate (EGCg) manufactured by Mitsui Norin Co., Ltd. was used as the active ingredient tea catechins used in the experiment. Caffeine was purchased from Nacalai Tesque. Experiments were performed with EGCg and caffeine adjusted so that the final concentrations in the medium were 31.25, 62.5, 125, 250, 500, 750, 1000, 1500, and 2000 ppm.

3.In vitroの抗白癬菌活性の評価
抗白癬菌活性の評価は、個々の有効成分を所定の濃度で含むPDA平板培地を作製し、その中央に白癬菌を接種した直径8mmのペーパーディスクを載置して25℃で7日間培養した後、生育抑止率を以下の数式により求めることで行った。
生育阻止率(%)=[(C−8)−(T−8)]×100÷(C−8)
C:有効成分を添加しない寒天上に生育したコロニー直径(コントロール)
T:有効成分を添加した寒天上に生育したコロニー直径
3. In vitro evaluation of anti- ringworm fungus activity Anti- ringworm fungus activity was evaluated by preparing a PDA plate medium containing each active ingredient at a predetermined concentration and placing a paper disk 8 mm in diameter inoculated with ringworm fungus in the center. Then, after culturing at 25 ° C. for 7 days, the growth inhibition rate was determined by the following formula.
Growth inhibition rate (%) = [(C−8) − (T−8)] × 100 ÷ (C−8)
C: Diameter of colonies grown on agar without added active ingredients (control)
T: Diameter of colonies grown on agar containing active ingredients

4.相乗効果の判別法
相乗効果の有無を解析するため、Calcusyn programのChou-Talalayの組み合わせ指標(CI)式に従って処理した((1) Chou, J. and Chou, T-C. Dose-effect analysis with microcomuputers: Quantitation of ED50, LD50, synergism, antagonism low-dose risk, receptor-ligand binding and enzyme kinetics. Manual and Software, Biosoft, Cambidge, U.K., 1987.、(2) Chou, J. Quantitation of synergism and antagonism of two or more drugs by computerized analysis. In Synergism and Antagonism in Chemotherapy (Chou, T-C. and Rideout, D. C., eds) pp223-244, Academic Press, San Diego, 1991)。CI値の算出にはEGCgとカフェインをそれぞれ単独で用いた場合の濃度と生育阻止率の関係を求める必要があり、その計算式としてCalcusyn programの以下の数式を用いた。
fa/fu=(D/Dm)m
D:有効成分(EGCgまたはカフェイン)の量
Dm:50%の生育阻止効果を示す物質量
fa:生育阻止率
fu:100−fa
m:量曲線の湾曲具合を示す指数
上記の式においてEGCgとカフェインが白癬菌に対して抗菌作用を示した場合、以下の数式に従ってCI値を算出した。
CI=[(D)1/(Dx)1]+[(D)2/(Dx)2]
(D)1,(D)2:X%阻害するときのEGCgとカフェインの濃度の組み合わせ
(Dx)1,(Dx)2:X%阻害するときのEGCgとカフェインの単独での濃度
上記の数式では一般にCI<1は相乗効果、CI=1は相加効果、CI>1は対立効果として定義される。
Four. Method for discriminating synergistic effects To analyze the presence or absence of synergistic effects, we processed according to the Chou-Talalay combination index (CI) formula in the Calcusyn program ((1) Chou, J. and Chou, TC. Dose-effect analysis with microcomuputers: Quantitation of ED50, LD50, synergism, antagonism low-dose risk, receptor-ligand binding and enzyme kinetics.Manual and Software, Biosoft, Cambidge, UK, 1987., (2) Chou, J. Quantitation of synergism and antagonism of two or more drugs by computerized analysis. In Synergism and Antagonism in Chemotherapy (Chou, TC. and Rideout, DC, eds) pp223-244, Academic Press, San Diego, 1991). To calculate the CI value, it is necessary to determine the relationship between the concentration and the growth inhibition rate when EGCg and caffeine are used alone, respectively, and the following formula of the Calcusyn program was used as the calculation formula.
fa / fu = (D / Dm) m
D: Amount of active ingredient (EGCg or caffeine)
Dm: Amount of substance showing 50% growth inhibitory effect
fa: Growth inhibition rate
fu: 100−fa
m: Index indicating the degree of curvature of the quantity curve When EGCg and caffeine showed antibacterial action against ringworms in the above formula, the CI value was calculated according to the following formula.
CI = [(D) 1 / (Dx) 1 ] + [(D) 2 / (Dx) 2 ]
(D) 1 , (D) 2 : Combination of EGCg and caffeine concentrations when inhibiting X%
(Dx) 1 , (Dx) 2 : concentration of EGCg and caffeine alone when inhibiting X% In the above formula, generally CI <1 is synergistic effect, CI = 1 is additive effect, CI> 1 is conflict Defined as an effect.

(実験結果)
Trichophyton tonsuransに対する抗菌作用を表1に、Trichophyton violaceumに対する抗菌作用を表2にそれぞれ示す。表1と表2から明らかなように、EGCgとカフェインの濃度の組み合わせによって相乗効果に強弱はあるものの、両者を有効成分として組み合わせることによる相乗効果を見出すことができた(点線による囲み部分)。
(Experimental result)
Table 1 shows the antibacterial action against Trichophyton tonsurans, and Table 2 shows the antibacterial action against Trichophyton violaceum. As is clear from Tables 1 and 2, although the synergistic effect is strong or weak depending on the combination of EGCg and caffeine concentrations, we were able to find a synergistic effect by combining both as active ingredients (boxed by dotted line). .

Figure 0005037821
Figure 0005037821

Figure 0005037821
Figure 0005037821

実施例B:
白癬菌の菌株としてTrichophyton rubrum(NBRC32409)とTrichophyton mentagrophytes(NBRC32410)を用いたこと以外は実施例Aと同様にして実験を行った。Trichophyton rubrumに対する抗菌作用を表3に、Trichophyton mentagrophytesに対する抗菌作用を表4にそれぞれ示す。表3と表4から明らかなように、EGCgとカフェインの濃度の組み合わせによって相乗効果に強弱はあるものの、両者を有効成分として組み合わせることによる相乗効果を見出すことができた(点線による囲み部分)。
Example B:
Experiments were performed in the same manner as in Example A except that Trichophyton rubrum (NBRC32409) and Trichophyton mentagrophytes (NBRC32410) were used as strains of ringworm. Table 3 shows the antibacterial action against Trichophyton rubrum, and Table 4 shows the antibacterial action against Trichophyton mentagrophytes. As is clear from Tables 3 and 4, although the synergistic effect is strong or weak depending on the combination of EGCg and caffeine concentrations, we were able to find a synergistic effect by combining both as active ingredients. .

Figure 0005037821
Figure 0005037821

Figure 0005037821
Figure 0005037821

製剤例1:クリーム剤(その1)
以下の配合にて、定法によりクリーム剤を作製した。
茶カテキン類 0.25%
カフェイン 0.1%
ワセリン 72%
ラノリン 15%
流動パラフィン 8%
精製水 残余
Formulation Example 1: Cream (Part 1)
A cream was prepared by the usual method with the following composition.
Tea catechins 0.25%
Caffeine 0.1%
Petrolatum 72%
Lanolin 15%
Liquid paraffin 8%
Purified water residue

製剤例2:クリーム剤(その2)
以下の配合にて、定法によりクリーム剤を作製した。
エピガロカテキンガレート 0.05%
カフェイン 0.05%
ワセリン 76%
ラノリン 15%
流動パラフィン 8%
精製水 残余
Formulation Example 2: Cream (Part 2)
A cream was prepared by the usual method with the following composition.
Epigallocatechin gallate 0.05%
Caffeine 0.05%
Petrolatum 76%
Lanolin 15%
Liquid paraffin 8%
Purified water residue

製剤例3:ローション剤
以下の配合にて、定法によりローション剤を作製した。
流動パラフィン 15%
オリーブ油 8%
オクチルドデカノール 7%
サンスクリーン剤 3.5%
モノステアリン酸ソルビン 4%
モノオレイン酸モリオキシエチレン(20)ソルビタン 6%
プロピレングリコール 5%
香料 適量
茶カテキン類 0.25%
カフェイン 0.1%
精製水 残余
Formulation Example 3: Lotion agent A lotion agent was prepared by a conventional method with the following composition.
Liquid paraffin 15%
Olive oil 8%
Octyldodecanol 7%
Sunscreen agent 3.5%
Sorbine monostearate 4%
Morioxyethylene monooleate (20) sorbitan 6%
Propylene glycol 5%
Perfume
Tea catechins 0.25%
Caffeine 0.1%
Purified water residue

本発明は、少量の有効成分で優れた効力を有する白癬治療剤を提供することができる点において産業上の利用可能性を有する。   The present invention has industrial applicability in that it can provide a therapeutic agent for ringworm having excellent efficacy with a small amount of an active ingredient.

Claims (2)

茶カテキン類とカフェインを有効成分として組み合わせてなり、下記のいずれかの濃度であることを特徴とする白癬治療剤。
治療の対象となる白癬菌がTrichophyton tonsuransの場合
(1)茶カテキン類が62.5〜500ppmかつカフェインが500〜1000ppm
(2)茶カテキン類が500〜1000ppmかつカフェインが31.25〜62.5ppm
治療の対象となる白癬菌がTrichophyton violaceumの場合
(1)茶カテキン類が31.25〜500ppmかつカフェインが500〜1000ppm
(2)茶カテキン類が500〜1500ppmかつカフェインが31.25〜62.5ppm
治療の対象となる白癬菌がTrichophyton rubrumの場合
(1)茶カテキン類が31.25〜2000ppmかつカフェインが1500〜2000ppm
(2)茶カテキン類が1000〜2000ppmかつカフェインが31.25ppm
治療の対象となる白癬菌がTrichophyton mentagrophytesの場合
(1)茶カテキン類が31.25〜2000ppmかつカフェインが1500〜2000ppm
(2)茶カテキン類が500〜750ppmかつカフェインが1000〜1500ppm
(3)茶カテキン類が1500〜2000ppmかつカフェインが31.25〜62.5ppm
A therapeutic agent for ringworm characterized by combining tea catechins and caffeine as active ingredients and having a concentration of any of the following.
Trichophyton tonsurans is the target of treatment
(1) 62.5-500ppm tea catechins and 500-1000ppm caffeine
(2) Tea catechins 500-1000ppm and caffeine 31.25-62.5ppm
Trichophyton violaceum is the target of treatment
(1) 31.25-500ppm tea catechins and 500-1000ppm caffeine
(2) 500 to 1500 ppm for tea catechins and 31.25 to 62.5 ppm for caffeine
Trichophyton rubrum is the target of treatment
(1) 31.25-2000ppm tea catechins and 1500-2000ppm caffeine
(2) 1000-2000ppm tea catechins and 31.25ppm caffeine
When Trichophyton mentagrophytes is the target for treatment (1) Tea catechins 31.25-2000ppm and caffeine 1500-2000ppm
(2) tea catechins is 500 ~750ppm and caffeine 1000 ~1500ppm
(3) tea catechins is 1500 ~2000ppm and caffeine 31.25~62.5ppm
茶カテキン類が少なくともエピガロカテキンガレートを含んでなることを特徴とする請求項1記載の白癬治療剤。   2. The therapeutic agent for ringworm according to claim 1, wherein the tea catechins comprise at least epigallocatechin gallate.
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