JP2017214386A - 抗菌組成物 - Google Patents
抗菌組成物 Download PDFInfo
- Publication number
- JP2017214386A JP2017214386A JP2017112806A JP2017112806A JP2017214386A JP 2017214386 A JP2017214386 A JP 2017214386A JP 2017112806 A JP2017112806 A JP 2017112806A JP 2017112806 A JP2017112806 A JP 2017112806A JP 2017214386 A JP2017214386 A JP 2017214386A
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- JP
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- Prior art keywords
- composition
- edta
- iodine
- agent
- composition according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Images
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Abstract
【解決手段】ゲルの形態でヨウ素、イオン銀又は酸化剤、該組成物を約4〜6のpHで維持するための緩衝剤並びにバイオフィルムを破壊する薬剤としてのEDTA又はそのジ−、トリ−及びテトラ−塩基性塩を含んでいる殺菌性組成物。前記酸化剤が例えば次亜塩素酸ナトリウム又は二酸化塩素である殺菌剤組成物。ヨウ素と酸化剤を同時に含む場合は、使用時迄、ヨウ素と酸化剤が分かれて保持される、殺菌剤組成物。
【選択図】なし
Description
一組の水性ゲルを調製し、これらを使用時に密に混合する、ヨウ素およびEDTAを含有する組成物を調製した。下記処方の適当な水溶性部の全てを含む水溶液を調製し、その後、非イオン性セルロース増粘剤(viscosifier)(ヒドロキシエチルセルロース)/プロピレングリコールのスラリーを加えて、各ゲルを調製した。
模擬創傷液(simulated wound fluid)(9ml)を17ml容セルウェルに加えた。黄色ブドウ球菌の培養液(1ml)を各ウェルに加え、106cfu/mlの最終培養液濃度を得た。本試験のコントロールは、カデキソマーヨウ素軟膏(2g)(ポジティブコントロール)およびヒドロゲル(ネガティブコントロール)を別々に各々3個のセルウェルに加えることを含んだ。ついで種々の濃度のEDTAを含むゲルAおよびB(1g)を別々のセルウェルに(3通に)加えた。ついで培養液とゲルを含む該セルウェルを35℃にて600 rpmで振盪した。4、24、48、72および96時間の時間間隔の後、試験サンプル(0.1ml)を各ウェルから取り、1% チオ硫酸ナトリウム含有MRD(マキシマムリカバリー希釈液)(9.9ml)に入れた。ついでサンプル(1ml)をトリプトンソイ寒天プレートに移し、48時間インキュベートした。ついで、バクテリア計数を記録した。
これらの結果は、わずか0.5%EDTA(二ナトリウム塩として計算した)をヨウ素に添加することによって、ヨウ素(0.3%にて)の効力が、0.3%ヨウ素・EDTAなしのコントロールと比較して増強されることを示す。該結果から明らかに、EDTAはヨウ素の効果を24時間内に、0.9%ヨウ素(ポジティブコントロール)の効力と同一にまで増強する。
7つの抗生物質耐性微生物を使用して、寒天で生育するバクテリアおよび酵母を殺すEDTAの効力を評価した。この試験のために、ろ紙ディスクを0.1〜40%濃度範囲のEDTAに浸漬した。EDTAは、それを適当量の滅菌再蒸留水に溶解して調製した。ついで該フィルターを、微生物を播種したMuller Hinton寒天上に、35℃での24時間の試験の下に加えた。全微生物を2回試験した。
ポロキサマー F127 ヒドロゲル(Univar、Basildon、Essex、UK)は、ポリオキシエチレンおよびポリオキシプロピレンのジ-ブロックコポリマーで、熱可逆ゲル化性を示す。15℃より下でポロキサマーは液体であり、水と完全に混ざるが、15℃を超えた温度では堅いゲルに変化する。ポロキサマーはバクテリアがより臨床的に関係するバイオフィルム表現型を示すのを促進する。Gilbertらは、ポロキサマーヒドロゲル上で生育した緑膿菌細胞(バイオフィルム形態)が78と87kDa間の外膜タンパク質を発現することを特定し、これは標準栄養寒天で生育した細胞(‘プランクトン’)では明らかでない(Gilbert et al., 1998)。従って、ポロキサマーゲル培養は、バイオフィルム-増殖緑膿菌の特性の多くを模倣する(Gilbert et al., 1998)。これはポロキサマーヒドロゲルで生育した場合と栄養寒天で生育した場合とでは緑膿菌細胞の表現型に違いがあり、ポロキサマー生育細胞だけがバイオフィルム細胞に類似していること示す。Wirtanenの研究(1998)から、ポロキサマー中で生育したバクテリアは、バイオフィルム特性を有し、殺生物剤耐性の増進に関与することが認められた。Gilbertらはポロキサマーヒドロゲルで生育したバクテリアを殺生物剤に曝露して、バイオフィルムバクテリアに対する殺生物剤の抗菌効力を試験するための再現性ある方法を提供しうることを示唆した(Gilbert et al., 1998)。
Wirtanen G, Salo S, Allison DG, Mattila-Sandholm T, Gilbert P. Performance evaluation of disinfectant formulations using poloxamer-hydrogel biofilm-constructs. Journal of Applied Microbiology 1998; 85:965-971.
方法: マイクロタイタープレートおよび吸光度測定ならびに目視検査を行い、種々の微生物についてのMICを得た(図2参照)。本試験に含まれるEDTAの濃度は、テトラ-Naとして40mg/ml pH 10.00、トリ-Naとして40mg/ml pH 6.84、ジ-Naとして40 mg/ml pH 5.50であった。各マイクロタイタープレートに、接種菌液(100μl)およびEDTAを加えた。ついで該プレートを35℃±3℃にて24時間インキュベートした。インキュベーションの後、全マイクロタイタープレートについて、増殖を目視で観察した。
結果は図2に示される。
本試験に使用した抗菌ドレッシングは、Acticoat登録商標(Smith and Nephew)およびAQUACEL登録商標 Ag Hydrofiber登録商標(ConvaTec)であった。Acticoat登録商標はナノ結晶銀抗菌バリアドレッシングであり、銀コート高密度ポリエチレンメッシュ(HDPE)の2層間に積層されたレーヨン/ポリエステル不織内部コアから成る。該層は超音波溶着で接着されている。AQUACEL登録商標 Agは、カルボキシメチルセルロースナトリウム Hydrofiber登録商標 およびイオン銀から構成される。AQUACEL登録商標 Ag の銀カチオンは、Hydrofiber登録商標 ドレッシングの個々の高吸収性アニオン性カルボキシメチルセルロース繊維に付着している。AQUACEL登録商標 Hydrofiber登録商標 ドレッシング(銀なし)もコントロールとして使用した。
本試験は、一連のEDTAフォームの活性へのpHの影響を示す。
TCG溶液(A)
TCG溶液(B)
EDTA(ジ、トリおよびテトラNa)の存在下に、MICはかなり減少した。ヨウ素濃度として表されるMICはジ、トリ、およびテトラナトリウムEDTAの存在下では、より低かったことが認められる。
Claims (16)
- 抗菌剤源およびバイオフィルムを破壊する薬剤を含むことを特徴とする、皮膚および創傷への使用に適する殺菌組成物。
- バイオフィルムを破壊する該薬剤がEDTAであることを特徴とする、請求項1に記載の殺菌組成物。
- 該抗菌剤がヨウ素、イオン銀または酸化剤(例えば次亜塩素酸ナトリウムまたは二酸化塩素)の群から選択されることを特徴とする、請求項1または請求項2に記載の皮膚および創傷への使用に適する殺菌組成物。
- pH4〜8にてEDTAのジ-、トリ-およびテトラ-塩基性塩を含むことを特徴とする、創傷への使用に適する組成物。
- 該組成物のpHが4と8の間であることを特徴とする、請求項1〜3に記載の組成物。
- 該組成物のpHが4.5と5.5の間であることを特徴とする、請求項1〜4に記載の組成物。
- 形態がゲルである、上記請求項のいずれかに記載の組成物。
- 該組成物がヨウ素を含むことを特徴とする、上記請求項のいずれかに記載の組成物。
- ヨウ素源、酸化剤および緩衝液を含む組成物であって、該ヨウ素は使用時まで該酸化剤と分かれて保持されていることを特徴とする、上記請求項のいずれかに記載の組成物。
- 該組成物がヨウ素5μg/組成物g/時間〜ヨウ素1500μg/組成物g/時間を生じることができることを特徴とする、請求項9に記載の組成物。
- 該組成物がイオン銀を含むことを特徴とする、請求項1〜6に記載の組成物。
- 該組成物がイオン銀を0.1〜10重量%、より好ましくは0.5〜1.5重量%含むことを特徴とする、請求項11に記載の組成物。
- 水溶液に四ナトリウム塩としてEDTAを加え、ついで該組成物のpHをpH4〜8に調整する工程を含むことを特徴とする、請求項4に記載の殺菌組成物の調製方法。
- 慢性的創傷および熱傷の治療における使用のための薬物の製造における、抗菌剤およびバイオフィルムを破壊する薬剤を含む殺菌組成物の使用。
- バイオフィルムを破壊する薬剤がEDTAであることを特徴とする、請求項14に記載の殺菌組成物の使用。
- 該抗菌剤がヨウ素、イオン銀または酸化剤(例えば次亜塩素酸ナトリウムまたは二酸化塩素)の群から選択されることを特徴とする、請求項14または請求項15に記載の殺菌組成物の使用。
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JP5340741B2 (ja) | 2013-11-13 |
ES2622827T3 (es) | 2017-07-07 |
PT1959739T (pt) | 2017-04-24 |
JP2009519312A (ja) | 2009-05-14 |
HK1246086A1 (zh) | 2018-09-07 |
DK1959739T3 (en) | 2017-05-01 |
JP2013209385A (ja) | 2013-10-10 |
WO2007068938A3 (en) | 2008-09-18 |
CA2632939C (en) | 2016-06-07 |
US20070190176A1 (en) | 2007-08-16 |
JP6348892B2 (ja) | 2018-06-27 |
JP2016040294A (ja) | 2016-03-24 |
LT1959739T (lt) | 2017-04-25 |
HUE032810T2 (en) | 2017-11-28 |
US9149035B2 (en) | 2015-10-06 |
AU2006325408A1 (en) | 2007-06-21 |
JP6509948B2 (ja) | 2019-05-08 |
US20150306055A1 (en) | 2015-10-29 |
NZ568999A (en) | 2011-12-22 |
EP1959739B1 (en) | 2017-03-29 |
US9545390B2 (en) | 2017-01-17 |
WO2007068938A2 (en) | 2007-06-21 |
PL1959739T3 (pl) | 2017-07-31 |
EP1959739A2 (en) | 2008-08-27 |
EP3241439B1 (en) | 2020-12-02 |
GB0525504D0 (en) | 2006-01-25 |
US10493101B2 (en) | 2019-12-03 |
CA2632939A1 (en) | 2007-06-21 |
EP3241439A1 (en) | 2017-11-08 |
US20170079276A1 (en) | 2017-03-23 |
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