JP2007133001A - コンタクトレンズ用ケア用剤 - Google Patents
コンタクトレンズ用ケア用剤 Download PDFInfo
- Publication number
- JP2007133001A JP2007133001A JP2005323595A JP2005323595A JP2007133001A JP 2007133001 A JP2007133001 A JP 2007133001A JP 2005323595 A JP2005323595 A JP 2005323595A JP 2005323595 A JP2005323595 A JP 2005323595A JP 2007133001 A JP2007133001 A JP 2007133001A
- Authority
- JP
- Japan
- Prior art keywords
- contact lens
- glucan
- feeling
- wearing
- lens
- 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.)
- Pending
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- 229960002253 neostigmine methylsulfate Drugs 0.000 description 1
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Landscapes
- Eyeglasses (AREA)
Abstract
【解決手段】本発明は、β−グルカンを含有してなることを特徴とするコンタクトレンズ用ケア用剤である。また、本発明は、コンタクトレンズをβ−グルカン含有水溶液に浸漬または接触させることで、該コンタクトレンズの装用感を改善する方法である。さらに本発明は、ヒト角膜上皮細胞の人工培養によって形成させたコロニーの相対的割合によって、コンタクトレンズの装用感にも影響を及ぼすコンタクトレンズ用ケア用剤の眼組織への安全性を評価する方法である。
【選択図】なし
Description
水濡れ性の指標として接触角測定法を用いた。
一般的に、致命的なダメージを受けた動物細胞は培養操作を行なっても十分に増殖することはない(明確なコロニーを形成しない)。この事に着目して、装用感にも影響を与える角膜の乾燥や紫外線暴露による角膜に対する悪影響など、眼組織へのダメージの程度を測ることで眼組織への安全性評価方法を見出した。
乾燥させてダメージを与えた角膜細胞を培養して得られるコロニーの程度によって、乾燥による眼組織へダメージを測るモデル実験を行なった。
(1) ヒト角膜上皮細胞(独立行政法人理化学研究所バイオリソースセンター製/以下HCE−Tという)
(2) D−MEM/F−12(1:1)(GIBCO社製)培地に牛胎児血清(10v/v%)
を加えて調製した標準培地(以下、標準培地という)
(3) 6ウェルのマイクロプレート(以下、プレートという)
(操作手順)
(1) プレートの各ウェルに標準培地を分注し、HCE−Tを播種する(100個/ウェル)。
コントロール群に形成されたコロニー数に対する処置群のコロニー形成率を求めた。コントロール群との相対評価ではあるが、処置群のコロニー形成率がコントロール群(コロニー形成率100%)に近いほど、眼組織の乾燥に対する抵抗性が高いと考えられるので、これを眼組織に対する安全性の指標とした。
紫外線を照射してダメージを与えた角膜上皮細胞を培養して得られるコロニーの程度によって、紫外線暴露によるダメージを測るモデル実験を行なった。
(1) ヒト角膜上皮細胞(独立行政法人理化学研究所バイオリソースセンター製/以下HCE−Tという)
(2) D−MEM/F−12(1:1)(GIBCO社製)培地に牛胎児血清(10v/v%)
を加えて調製した標準培地(以下、標準培地という)
(3) 6ウェルのマイクロプレート(以下、プレートという)
(操作手順)
(1) プレートの各ウェルに標準培地を分注し、HCE−Tを播種する(100個/ウェル)。
コントロール群に形成されたコロニー数に対する処置群のコロニー形成率を求め、アポトーシスの指標とした。コントロール群との相対評価ではあるが、処置群のコロニー形成率がコントロール群(コロニー形成率100%)に近いほど、眼組織の紫外線曝露に対する抵抗性が高いと考えられるので、これを眼組織に対する安全性の指標とした。
実施例および比較例で得られた水溶液にコンタクトレンズを24時間浸漬して、浸漬前後におけるレンズのサイズ測定と目視による外観検査を行なって、下記基準により評価した。サンプルとして、ハードコンタクトレンズ(シード A−1;(株)シード製)をレンズ1、イオン性高含水ソフトコンタクトレンズ(シード ツーウィークピュア;(株)シード製)をレンズ2、非イオン性低含水ソフトコンタクトレンズ(シード ツーウィークファイン;(株)シード製)をレンズ3として選択した。
β−グルカンとして、アウレオバシジウム プルランス(Aureobasidium pulullans)ADK−34(FERM P-18932)を定法にしたがい培養して得られたβ1−3,1−6グルカン(旭電化工業社製)をサンプル1とした。サンプル1に対してダルベッコのリン酸緩衝液(PBS(−))(和光純薬工業(株)製)および非イオン性界面活性剤であるLutrol(商標)F127(BASF社製)を、表1に示す濃度で配合し、上記評価方法に従って評価した。
β−グルカンとして、大麦から定法にしたがい抽出して得られたβ1−3,1−4グルカン(旭電化工業社製)をサンプル2とした。サンプル2に対してダルベッコのリン酸緩衝液(PBS(−))(和光純薬工業(株)製)および非イオン性界面活性剤であるLutrol(商標)F127(BASF社製)を、表1に示す濃度で配合し、上記評価方法に従って評価した。
β−グルカンを配合しない例として、ダルベッコのリン酸緩衝液(PBS(−))のみあるいは該緩衝液と非イオン性界面活性剤を組み合わせて調製した溶液の場合を、実施例1と同様の手順で評価した。
実際の装用による評価
実施例1〜3及び実施例5〜7に対してβ−グルカンを配合しない比較例1を対照とし、実施例4及び8に対してはβ−グルカン配合しない比較例2を対照として、実使用による装用感の試験を行なった。
Claims (3)
- β−グルカンを含有してなることを特徴とするコンタクトレンズ用ケア用剤。
- コンタクトレンズをβ−グルカン含有水溶液に浸漬または接触させることで、該コンタクトレンズの装用感を改善する方法。
- ヒト角膜上皮細胞の人工培養によって形成させたコロニーの相対的割合によって、コンタクトレンズの装用感にも影響を及ぼすコンタクトレンズ用ケア用剤の眼組織への安全性を評価する方法。
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Cited By (2)
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JP4981181B1 (ja) * | 2011-03-22 | 2012-07-18 | 株式会社メニコン | コンタクトレンズ用組成物 |
JP2012198538A (ja) * | 2012-03-12 | 2012-10-18 | Menicon Co Ltd | コンタクトレンズ用組成物 |
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