JP2020128553A - 抗菌性および抗ウイルス性複合ポリマー表面 - Google Patents
抗菌性および抗ウイルス性複合ポリマー表面 Download PDFInfo
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- JP2020128553A JP2020128553A JP2020082142A JP2020082142A JP2020128553A JP 2020128553 A JP2020128553 A JP 2020128553A JP 2020082142 A JP2020082142 A JP 2020082142A JP 2020082142 A JP2020082142 A JP 2020082142A JP 2020128553 A JP2020128553 A JP 2020128553A
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- zinc pyrithione
- composite polymer
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- antibacterial
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Abstract
Description
実験的な研究において使用される略語は以下の通りである:ジンクピリチオンZP、トリクロサンT、八ホウ酸二ナトリウム四水和物DOP、ホウ酸ナトリウムSB。
本発明の実施形態では、複合ポリマー表面は、異なる濃度のグルコン酸クロルヘキシジンおよび/またはトリクロサン並びにポリマー顆粒とのそれらの組み合わせと一緒に、別々にまたは組み合わせてホウ素化合物とジンクピリチオンとを混合することにより得られる。
修正ディスク拡散法
試験される各微生物へのホウ素化合物の抗菌活性を決定するために修正されている、標準NCCLSディスク拡散法(Lalitha,M.K.およびT.N.Vellore、“Manual on antimicrobial susceptibility testing”、URL:http://www.ijmm.org/documents/Antimicrobial.doc,2005)を用いた。108cfu/mLの細菌、106cfu/mLの酵母および104spore/mLの真菌を含む100μL溶液を、新しい培養株を用いて作製し、拡散法を用いて、栄養寒天(NA)、サブローデキストロース寒天(SDA)およびジャガイモデキストロース寒天(PDA)それぞれに接種した。20μLの滅菌水を空のディスク上に滴下し、それを別々に粉砕ホウ酸亜鉛、ホウ酸ナトリウム、過ホウ酸ナトリウム四水和物、ホウ砂五水和物、八ホウ酸二ナトリウム四水和物に浸漬した。ホウ酸亜鉛、ホウ酸ナトリウム、過ホウ酸ナトリウム四水和物、ホウ砂五水和物、八ホウ酸二ナトリウム四水和物を用いて符号化されたディスクを接種ペトリ皿に入れた。滅菌水の20μL滴を有する空ディスクを陰性対照として使用した。オフロキサシン(10μg/ディスク)およびナイスタチン(30μg/ディスク)は、それぞれ、細菌および真菌のための陽性対照群として使用した。接種し、修正ディスク拡散法を適用したペトリ皿を、細菌のために24時間および酵母のために48時間36±1℃に維持し、並びに真菌のために72時間25±1℃に維持した。修正されたディスク拡散法を用いて試験した微生物に対する抗菌活性を、は阻止域(微生物が増殖しない領域)を測定することによって評価した。試験したホウ素化合物の抗菌活性試験結果は、表1に要約されている。すべての試験は、少なくとも2回繰り返した。
(1〜20%の)それぞれ割合でのホウ素化合物の内で、ホウ酸亜鉛、ホウ酸ナトリウム、過ホウ酸ナトリウム四水和物、ホウ砂五水和物および八ホウ酸二ナトリウム四水和物が好ましかった。
ジンクピリチオン(1〜20%)およびトリクロサン(0.001〜0.2%)を異なる組合せで混合することにより、抗菌性および抗ウイルス性ポリマー複合材料を得ることができる。
抗菌性および抗ウイルス性複合表面に対する抗菌活性試験を、2つの異なる方法を用いて同時に行った。
グルコン酸クロルヘキシジンおよびジンクピリチオンの抗ウイルス活性試験
ヒトアデノウイルス5型Adenoid75株およびポリオウイルス1型Chat株ウイルスを産生し、実験を実施するために、ヒト単層腫瘍細胞であるHEp−2細胞(ATCC CCL−23)の完全な層を使用した。ウイルス力価を決定するため、HEp−2細胞に連続希釈することにより、および基準として倒立顕微鏡で目に見える細胞変性効果を生じるウイルス希釈液を取ることによって、参照ヒトアデノウイルス5型Adenoid75株およびポリオウイルス1型Chat株を接種し、ウイルス力価は、Spearman‐Karber法を用いて計算した。グルコン酸クロルヘキシジンおよびジンクピリチオンの準細胞毒性濃度を決定するために、グルコン酸クロルヘキシジンおよびジンクピリチオンをイーグル最小必須培地(MEM)を用いて10倍連続希釈し、細胞培地中のそれらの非毒性濃度を決定し、これらの濃度を実験で使用した。対照のために、MEM接種したHEp−2細胞、グルコン酸クロルヘキシジンおよびジンクピリチオンを添加しなかった完全な層のHEp−2細胞、10倍希釈した参照ウイルス力価対照、ホルムアルデヒド対照、並びに毒性濃度のグルコン酸クロルヘキシジンおよびジンクピリチオンを含む対照を、上記ウイルスの代わりの陰性対照として使用した。
MEM培地:細胞をその表面に付着させ、増殖することができるようにするための、酵素、ホルモンおよび成長因子を含有する10%血清(FBS)、および40IU/mLのペニシリン、0.04mg/mLのストレプトマイシン、真菌および細菌汚染を防ぐための0.5mg/mLのグルタミン、および緩衝液として1%の重炭酸ナトリウムをその中に添加した。
FBS:不活化した、マイコプラズマ不含のもの。
重炭酸ナトリウム:7.5%滅菌溶液
ウイルス接種に使用される培地:真菌および細菌汚染を防止するために、1%抗生物質(ペニシリン、ストレプトマイシン、アンホテリシンB)、および緩衝液として1%の重炭酸ナトリウムを含む培地。FBS血清は、この培地に添加されていない。
清潔な媒体:0.3gのBovine Serum Albumin Fraction Vを100mLの滅菌水に溶解した。得られた溶液を、メッシュサイズ0.22μΜを有するフィルターを通過させることによって滅菌した。
汚染された媒体:Sheep ErythrocyteおよびBSAを汚染媒体に使用した。3gのBSAを100mLの滅菌水に溶解し、濾過した。3mLヒツジ赤血球を97mLのBSAに完成させた。
赤血球;8mLの新鮮なヒツジ血液を10分間800Gで回転させ、その上清を除去した。リン酸緩衝塩(PBS)8mLを、その上に追加する際に、ピペッティング操作を行い、これを再び10分間800Gで回転させた。この手順を3回繰り返した。
まず、液体グルコン酸クロルヘキシジンおよびジンクピリチオンを、細胞培養培地(MEM)で連続希釈して固体とし、細胞培養におけるその非毒性濃度を算出した。試験すべきグルコン酸クロルヘキシジンおよびジンクピリチオン8mLを2mL硬水と混合した。得られた溶液を、MEMを用いて、連続で希釈した(希釈工程10:1)。これは、96ウェルの単層細胞に接種した。発生した微小な変化を記録した。細胞変性効果(CPE)を示した濃度を決定した。グルコン酸クロルヘキシジン、ジンクピリチオンおよびホルムアルデヒドCPE値を比較した。細胞上のグルコン酸クロルヘキシジンとジンクピリチオンの非毒性濃度を決定した後、清潔な培地および汚染された培地における5〜60分間適用期間の結果としての、グルコン酸クロルヘキシジンとジンクピリチオンのウイルス力価への影響を別々に研究した。対照のために、MEM接種したHEp−2細胞、グルコン酸クロルヘキシジンおよびジンクピリチオンを添加しなかった完全な層のHEp−2細胞、10倍希釈した参照ウイルス力価対照、ホルムアルデヒド対照、並びに毒性濃度のグルコン酸クロルヘキシジンおよびジンクピリチオンを含む対照を、上記ウイルスの代わりの陰性対照として使用した。
抗菌性試験の結果:
試験したホウ素化合物の抗菌活性試験の結果を、表1にまとめて示す。すべての試験を、少なくとも2回繰り返した。
b:記号「−」によって、抗菌活性を有さないことを示す。
1:2.5%のZB、10%のSBおよび0.2%のTを含有するPVC
2:3%のZBおよび3%のDOTを含有するPVC
3:3%のZBおよび0.2%のTを含有するPVC
4:15%のSBおよび2%のCHを含有するPVC
5:2.5%のZB、10%のSBおよび0.2%のTを含有するPE
6:3%のZBおよび3%のDOTを含有するPE
7:3%のZBおよび0.2%のTを含有するPE
8:15%のSBおよび2%のCHを含有するPE
9:2.5%のZB、10%のSBおよび0.2%のTを含有するPU
10:3%のZBおよび3%のDOTを含有するPU
11:3%のZBおよび0.2%のTを含有するPU
12:15%のSBおよび2%のCHを含有するPU
13:2.5%のZB、10%のSBおよび0.2%のTを含有するPP
14:3%のZBおよび3%のDOTを含有するPP
15:3%のZBおよび0.2%のTを含有するPP
16:15%のSBおよび2%のCHを含有するPP
NC:負の対照;どの添加物も含有しないPVC、PE、PU、PP
清潔な培地および汚染された培地における1分間および60分間適用期間における、1/1の比および室温(20℃)での適用の結果としての、グルコン酸クロルヘキシジンがすべての実験条件(表3および表4)でウイルス力価において対数で少なくとも4の低減を引き起こしたことが試験の結果として行った計算において観察された。Antimicrobial Division US EPA基準によると、消毒薬は、その抗ウイルス活性殺ウイルスのために、ウイルス力価を対数で4以上だけ低減するはずである。
Claims (9)
- ジンクピリチオン、ホウ酸ナトリウム、トリクロサンおよびポリマーの組み合わせを含むことを特徴とする、複合ポリマー表面。
- 2.5質量%のジンクピリチオン、10質量%のホウ酸ナトリウムおよび0.2質量%のトリクロサンを含む、請求項1記載の複合ポリマー表面。
- ジンクピリチオン、八ホウ酸二ナトリウム四水和物およびポリマーの組み合わせを含むことを特徴とする、複合ポリマー表面。
- 3質量%のジンクピリチオンおよび3質量%の八ホウ酸二ナトリウム四水和物を含む、請求項3記載の複合ポリマー表面。
- ホウ酸ナトリウム、グルコン酸クロルヘキシジンおよびポリマーの組み合わせを含むことを特徴とする、複合ポリマー表面。
- 15質量%のホウ酸ナトリウムおよび2質量%のグルコン酸クロルヘキシジンを含む、請求項5記載の複合ポリマー表面。
- ジンクピリチオン、トリクロサンおよびポリマーの組み合わせを含むことを特徴とする、複合ポリマー表面。
- 3質量%のジンクピリチオンおよび0.2質量%のトリクロサンを含む、請求項7記載の複合ポリマー表面。
- ポリプロピレン、ポリエステル、ポリスチレン、ポリアミド、ポリオキシメチレン、ポリエチレンテレフタレート、ポリカーボネート、ポリメチルメタクリレート、ポリジメチルシロキサン、ポリテトラフロロエチレン、ポリエーテルケトン、アクリロニトリルブタジエンスチレン、熱可塑性エラストマー、スチレンアクリロニトリル、ポリ乳酸、ポリ塩化ビニル、ポリプロピレン、ポリエチレンおよびポリウレタンの内の1つによって実現されている、請求項1〜8のいずれか1項記載のポリマー。
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US7837009B2 (en) * | 2005-04-01 | 2010-11-23 | Buckeye Technologies Inc. | Nonwoven material for acoustic insulation, and process for manufacture |
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JP2014151137A (ja) * | 2013-02-14 | 2014-08-25 | Ichimaru Pharcos Co Ltd | 消臭剤およびその利用 |
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JP2001278863A (ja) * | 2000-01-26 | 2001-10-10 | Yoshitomi Fine Chemicals Ltd | ピリチオン含有組成物の変色防止または改善方法および変色が防止された組成物 |
JP2007525584A (ja) * | 2004-02-27 | 2007-09-06 | ハイドロマー インコーポレイテッド | 抗感染性ヒドロゲル組成物 |
JP2008542472A (ja) * | 2005-05-22 | 2008-11-27 | ユー.エス.ボラックス インコーポレイテッド | ポリマー材料に対する共生物致死性の処方 |
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WO2017044062A1 (en) | 2017-03-16 |
US20180244895A1 (en) | 2018-08-30 |
JP2018532833A (ja) | 2018-11-08 |
EP3347408A1 (en) | 2018-07-18 |
CA2995924A1 (en) | 2017-03-16 |
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