JP6815006B2 - アクネ菌株選択的抗菌剤 - Google Patents
アクネ菌株選択的抗菌剤 Download PDFInfo
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- JP6815006B2 JP6815006B2 JP2016214239A JP2016214239A JP6815006B2 JP 6815006 B2 JP6815006 B2 JP 6815006B2 JP 2016214239 A JP2016214239 A JP 2016214239A JP 2016214239 A JP2016214239 A JP 2016214239A JP 6815006 B2 JP6815006 B2 JP 6815006B2
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- A61K31/201—Carboxylic acids, e.g. valproic acid having a carboxyl group bound to a chain of seven or more carbon atoms, e.g. stearic, palmitic, arachidic acids having one or two double bonds, e.g. oleic, linoleic acids
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
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Description
本発明の第1の態様は、遊離形態または塩形態の、炭素数14〜20の飽和脂肪酸(C14:0〜C20:0)および炭素数18の一価不飽和脂肪酸(C18:1)からなる群より選択される少なくとも1種の脂肪酸またはそのエステル体を含む、アクネ菌株選択的抗菌剤に関する。
本明細書において「アクネ菌株選択的抗菌剤」は、下記するアクネ菌株選択的抗菌活性を有する抗菌剤を示し、遊離形態または塩形態の、炭素数14〜20の飽和脂肪酸(C14:0〜C20:0)および炭素数18の一価不飽和脂肪酸(C18:1)からなる群より選択される少なくとも一種の脂肪酸またはそのエステル体を含む。
本発明において、MICは日本化学療法学会標準法である微量液体希釈法に従って測定される。
本明細書における「衣料品」は、限定するものではないが、肌着またはマスク(特に衛生マスク)であってよい。
アクネ菌株選択的抗菌活性
試験物質の抗菌活性を、最小発育阻止濃度(MIC)に基づいて判定した。MICは日本化学療法学会標準法である微量液体希釈法に従って測定した。
表1に示すアクネ菌株を1白金耳掻き取り、それぞれGAMブイヨン斜面寒天培地(pH7.0、日水製薬)5mLに植菌した。
表2に示す各脂肪酸(東京化成)を、10,000μg/mLになるように溶媒ジメチルスルホキシド(DMSO)にそれぞれ溶解し、試験物質とした。
菌株懸濁液(5.0×104cfu/mL)を96穴丸底マイクロプレートに分注し、試験物質(脂肪酸濃度10,000μg/mL)を1/10量加えて混合し、測定用試料とした(脂肪酸濃度1,000μg/mL)。2倍希釈系列の測定用試料を、菌株懸濁液を用いて調製した(脂肪酸濃度0.48〜1,000μg/mL)。溶媒(DMSO)のみを加えた試料をコントロールとして用い、各菌株の生育に対する溶媒の影響は無視し得ることを確認した。
前記測定用試料を、嫌気条件下37℃で2日間インキュベートした。インキュベーション後に沈殿した被検菌体の有無を確認し、被検菌体の沈殿が確認されなかった最小濃度を、その試験物質のアクネ菌株に対するMIC(μg/mL)とした。得られたMICを表2に示す。
対照抗菌剤の菌株選択的抗菌活性
抗菌剤として慣用される39種の対照抗菌剤を試験物質として、それぞれの抗菌剤に適した溶媒を用いたことを除いて、実施例1と実質的に同じ方法でMICを測定し、その菌株選択的抗菌活性を評価した。測定した39種の対照抗菌剤のうち、21種類を下記し、そのうち5種類の対照抗菌剤のアクネ菌株に対するMIC(μg/mL)および評価を表4に示す。
対照抗菌剤:
(1)サリチル酸、(2)グリセリン脂肪酸エステル、(3)安息香酸ナトリウム、(4)パラオキシ安息香酸メチル、(5)パラオキシ安息香酸エチル、(6)パラオキシ安息香酸プロピル、(7)パラオキシ安息香酸ブチル、(8)グリセリンモノ−2−エチルヘキシルエーテル、(9)フェノキシエタノール、(10)ラウロイルサルコシンナトリウム、(11)塩化セチルピリジニウム、(12)N−カプリロイルアシルグリシン、(13)N−ヤシ油脂肪酸アシル−L−アルギニンエチル・DL−ピロリドンカルボン酸塩、(14)イソプロピルメチルフェノール、(15)PCA亜鉛、(16)塩化ベンザルコニウム、(17)トリクロサン、(18)グルコン酸亜鉛、(19)ヒノキチオール、(20)ヨウ化パラジメチルアミノスチリルヘプチルメチルチアゾリウム、(21)エタノール。
トリクロサンの菌株選択的抗菌活性は3.0であり(表4)、これは、トリクロサンが、ニキビ患者優性株(RT4株およびRT5株)の生育を選択的に抑制し、全アクネ菌株における健常者優性株(RT6株)の比率を高め得ることを示唆する。ここで、実施例1において実用的な菌株選択的抗菌活性を示すことが実証された脂肪酸は9超の菌株選択的抗菌活性を示した(表2)。
対照抗生物質の菌株選択的抗菌活性
ニキビ治療に広く用いられている既存の抗生物質を試験物質として、各抗生物質に適した溶媒を用いたこと及び対象物質の濃度範囲が異なることを除いて、実施例1と実質的に同じ方法で各試験物質のアクネ菌株に対するMIC(ng/mL)を測定し、その菌株選択的抗菌活性を評価した(表5)。
各pHにおける菌株選択的抗菌活性
実施例1において、菌株選択的抗菌活性が大きかった飽和脂肪酸(C14:0〜C17:0)とNDとなった飽和脂肪酸(C18:0)を試験物質として用い、変法GAMブイヨン液体培地のpHを6.0から、5.0、5.5、6.5、7.0に変更したことを除いて、実施例1と実質的に同じ方法で各試験物質のアクネ菌株に対するMIC(μg/mL)を測定し、その菌株選択的抗菌活性を評価した(表6〜9)。
モノアシルグリセロール(MAG)の菌株選択的抗菌活性
(1)モノアシルグリセロールの調製
脂肪酸(C14〜C18)のモノアシルグリセロールは、Praphan Pinsirodom, et. al, J. Am. Oil Chem. Soc., 81, 543-547 (2004)に記載の方法に従って調製した。具体的には、0.058mLの水に、1,000mgのペンタデカン酸(C15:0)、1,900mgのグリセリン(脂肪酸に対して5倍モル)、116mgのPenicillium camembertii由来リパーゼ(リパーゼG,天野エンザイム)を加えて、30℃で2日間、撹拌させながら反応させた。反応後、15mLのクロロホルム/メタノール(2:1,v/v)および5mLの水を加えて撹拌した後に、遠心分離にかけ、溶媒層を回収した。回収した溶媒層をエバポレーターにより溶媒を留去して濃縮した。得られた濃縮液を、シリカゲルクロマトグラフィーに負荷し、ヘキサン/酢酸エチル(80:20,v/v)を用いて夾雑物を溶出させた。次いで、メタノールを用いてモノアシルグリセロールを溶出させ、0.41gのモノペンタデカノインを得た。他の脂肪酸(C14:0、C16:0、C17:0およびC18:0)のモノアシルグリセロールについても同様にして調製した。
調製した各脂肪酸のモノアシルグリセロールを試験物質として用い、実施例1と実質的に同じ方法で各試験物質のアクネ菌株に対するMIC(μg/mL)を測定した(表11)。
菌株選択的抗菌活性の経時変化
実施例1と同様にして調製した各アクネ菌株(HL053PA1株(RT4株)、HL043PA1株(RT5株)、HL110PA3株(RT6株))の菌株懸濁液(pH6.0、5.0×105cfu/mL)にペンタデカン酸(C15:0)を加えて混合し(脂肪酸終濃度15μg/mLおよび溶媒DMSO終濃度0.5%)、窒素雰囲気(嫌気条件)下37℃で静置培養した。0.5%(終濃度)DMSOのみを加えた試料をコントロールとして用い、各菌株の生育に対する溶媒の影響は無視し得ることを確認した。
培養液中の生菌数は、培養後0、2、8、18、30および44時間に測定した。生菌数(cfu/mL)は、培養液の一部をGAMブイヨン寒天プレート上で3日間嫌気条件下にて培養し、出現したコロニー数から算出した(図1)。
アクネ菌株共培養下における菌株選択的抗菌活性
(1)共培養用菌株懸濁液の調製
実施例1と同様にして、アクネ菌株(HL053PA1株(RT4株)、HL043PA1株(RT5株)およびHL110PA3株(RT6株))をそれぞれ前培養した。
変法GAMブイヨン液体培地(pH6.0)に、HL053PA1株(RT4株)とHL110PA3株(RT6株)がそれぞれ5.0×104cfu/mLになるように懸濁し、並びにHL043PA1株(RT5株)とHL110PA3株(RT6株)がそれぞれ5.0×104cfu/mLになるように懸濁し、それぞれ共培養用菌株懸濁液−1および−2とした。
調製した共培養用菌株懸濁液−1および−2に、ペンタデカン酸(C15:0)を添加し、試験試料とした(終濃度15および0.49μg/mL)。0.5%DMSOのみを加えた試料をコントロールとして用い、各菌株の生育に対する溶媒の影響は無視し得ることを確認した。
前記試験試料を、嫌気条件下37℃で2日間、静置培養した。培養後に、培養液の一部をGAMブイヨン寒天プレート(pH7)上で3日間嫌気条件下にて培養した。出現したコロニーの形態(特にサイズ)に基づいて菌株を特定し、各菌株の生菌数(cfu/mL)を計測した。計測結果から、全菌体における各菌株の比率を算出した(図2)。
異なるアクネ菌株に対する菌株選択的抗菌活性
実施例1〜3で用いたニキビ患者優性株(HL053PA1株(RT4株)およびHL043PA1株(RT5株))および健常者優性株(HL110PA3株(RT6株))に代えて、ニキビ患者優性株(HL005PA1株(HM−492†、RT4株)、HL056PA1株(HM−524†、RT4株)、HL045PA1株(HM−516†、RT4株)およびHL043PA2株(HM−514†、RT5株))および健常者優性株(HL110PA4株(HM−555†、RT6株)を用いて被験菌株懸濁液を調製したことを除いて、実質的に実施例1と同じ方法で、下記試験物質のMICを測定した(表12)。
†: BEI Resources(Manassas, VA, USA)カタログ番号を示す。
Claims (5)
- 遊離形態または塩形態の、ペンタデカン酸およびヘプタデカン酸からなる群より選択される少なくとも1種の脂肪酸を含む、アクネ菌株選択的抗菌剤、および皮膚適用上許容される担体を含む皮膚用アクネ菌株選択的抗菌組成物であって、
前記組成物は、前記脂肪酸を、遊離形態に換算して前記組成物の全重量あたり0.01〜1wt%含み、
前記組成物は、ラウリン酸及びステアリン酸のいずれか又はその両方を、遊離形態に換算して前記組成物の全重量あたり0.01wt%未満含み、
アクネ菌株選択的抗菌作用が、pH6における、HL110PA3株(RT6株)に対する前記組成物のMICRT6をHL053PA1株(RT4株)に対する前記組成物のMICRT4で除した値(MICRT6/MICRT4)と、前記MICRT6をHL043PA1株(RT5株)に対する前記組成物のMICRT5で除した値(MICRT6/MICRT5)との算術平均の値が、20超である、組成物。 - 前記脂肪酸が少なくともペンタデカン酸を含む、請求項1に記載の組成物。
- ニキビ治療用または予防用である、請求項1または2に記載の組成物。
- 医薬用、化粧用または衣料用である、請求項1〜3のいずれか一項に記載の組成物。
- 皮膚用アクネ菌株選択的抗菌組成物の製造における、遊離形態または塩形態の、ペンタデカン酸およびヘプタデカン酸からなる群より選択される少なくとも1種の脂肪酸の使用であって、
前記組成物は、前記脂肪酸を、遊離形態に換算して前記組成物の全重量あたり0.01〜1wt%含み、
前記組成物は、ラウリン酸及びステアリン酸のいずれか又はその両方を、遊離形態に換算して前記組成物の全重量あたり0.01wt%未満含み、
アクネ菌株選択的抗菌作用が、pH6における、HL110PA3株(RT6株)に対する前記組成物のMICRT6をHL053PA1株(RT4株)に対する前記組成物のMICRT4で除した値(MICRT6/MICRT4)と、前記MICRT6をHL043PA1株(RT5株)に対する前記組成物のMICRT5で除した値(MICRT6/MICRT5)との算術平均の値が、20超である、使用。
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CN114901242A (zh) * | 2019-10-03 | 2022-08-12 | S-生物医药有限公司 | 新的皮肤护理组合物 |
EP4114352A1 (en) * | 2020-03-02 | 2023-01-11 | Unilever IP Holdings B.V. | An effective anti-acne personal care composition |
CN113930359A (zh) * | 2021-10-12 | 2022-01-14 | 中国科学技术大学 | 抗痤疮丙酸杆菌药物的筛选试剂 |
CN116270368A (zh) * | 2023-05-15 | 2023-06-23 | 天津悟空美容科技有限责任公司 | 一种抗痤疮化妆品及制备方法 |
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JPS59139920A (ja) * | 1983-01-28 | 1984-08-11 | Shiseido Co Ltd | 乳化組成物 |
GB8514975D0 (en) * | 1985-06-13 | 1985-07-17 | Sempernova Plc | Compositions |
JPH01311014A (ja) * | 1988-06-06 | 1989-12-15 | Taiyo Kagaku Co Ltd | 抗菌性皮膚外用剤 |
JP3524169B2 (ja) * | 1994-09-20 | 2004-05-10 | カネボウ株式会社 | ニキビ改善用皮膚化粧料 |
JP2979000B2 (ja) * | 1995-02-02 | 1999-11-15 | 株式会社シルク工芸 | 絹を主材とする不織布及びそれを用いた衣料製品 |
IT1284971B1 (it) * | 1996-10-17 | 1998-05-28 | Indena Spa | Formulazioni farmaceutiche e cosmetiche ad attivita' antiacne |
JP2002114669A (ja) * | 2000-10-02 | 2002-04-16 | Noevir Co Ltd | 抗菌性皮膚洗浄料 |
JP4565275B2 (ja) * | 2001-02-28 | 2010-10-20 | 小林製薬株式会社 | 抗菌性組成物 |
EP1809306B1 (en) * | 2004-11-07 | 2012-09-12 | The Cupron Corporation | Copper containing materials for treating wounds, burns and other skin conditions |
JP2006206582A (ja) * | 2004-12-27 | 2006-08-10 | Lion Corp | 皮膚用殺菌洗浄剤組成物及び殺菌方法 |
US9289373B2 (en) * | 2009-10-26 | 2016-03-22 | International Flora Technologies, Ltd. | Human sebum mimetics derived from botanical sources and methods for making the same |
WO2013142378A1 (en) | 2012-03-17 | 2013-09-26 | The Regents Of The University Of California | Fast diagnosis and personalized treatments for acne |
WO2015001997A1 (ja) * | 2013-07-05 | 2015-01-08 | 東洋紡株式会社 | 衛生用品 |
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2016
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2017
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- 2017-10-30 US US16/343,962 patent/US20190247353A1/en not_active Abandoned
- 2017-10-30 CN CN201780066325.1A patent/CN109890380A/zh active Pending
- 2017-10-30 WO PCT/JP2017/039144 patent/WO2018084112A1/ja unknown
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Publication number | Publication date |
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EP3536316A1 (en) | 2019-09-11 |
WO2018084112A1 (ja) | 2018-05-11 |
JP2018070536A (ja) | 2018-05-10 |
EP3536316A4 (en) | 2020-05-27 |
CN109890380A (zh) | 2019-06-14 |
US20190247353A1 (en) | 2019-08-15 |
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