JP6933393B2 - 皮膚異常の処置のための治療用化粧品 - Google Patents
皮膚異常の処置のための治療用化粧品 Download PDFInfo
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- JP6933393B2 JP6933393B2 JP2019157768A JP2019157768A JP6933393B2 JP 6933393 B2 JP6933393 B2 JP 6933393B2 JP 2019157768 A JP2019157768 A JP 2019157768A JP 2019157768 A JP2019157768 A JP 2019157768A JP 6933393 B2 JP6933393 B2 JP 6933393B2
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Description
本出願は、2018年9月6日に出願した米国特許出願第16/123,986号明細書の利益を主張すると共に、参照によりこの特許出願の全体を援用する。
薬学グレードのキトサン(1H NMRによる算出で92%の脱アセチル化度;特定の粘度測定法による算出で185kDaの平均分子量)を、Sigma Aldrich(St.Louis,MO,USA)から購入した。脱アセチル化度および平均分子量分布は、脱アセチル化度がより高くもしくは低く、および/または、平均分子量がより高くもしくは低くなるよう、キトサンを生成するためのMCT−キトサン複合体の生成において制御可能である。
膨潤度(%)=[(Ws−Wd)/Ws]×100
キトサン(CHT)は、生体適合性および生体吸収性であると報告されている。特に、CHTは、良好な創傷治癒促進剤であると考えられている。他方で、コラーゲン(MCT)は、ティッシュエンジニアリングにおいてもっとも広範に用いられているマトリックスバイオマテリアルの一種である。高度に多孔性であるMCT単成分3Dスポンジが多くの種類の組織のインビトロ成長を支持するために用いられてきた。ハイブリッド3Dスポンジバイオマテリアルを、CHTおよびMCT(ナマコ試料から単離した)を異なる質量比で混合し、溶剤流延および凍結乾燥を含む既述の方法を適用することにより作成した。MCT/CHTハイブリッド3Dスポンジを、それらの吸水能、機械特性、熱挙動(TGA)および形態(SEM)に従って特徴付けた。ハイブリッド3Dスポンジは、単成分3Dスポンジと比して、向上した安定性、大きい間隙率、高い熱安定性および機械特性、ならびに、高い生分解性を示した。脂肪由来幹細胞(ADSC)との細胞培養インキュベーションおよびSEM画像化で、MCT/CHTハイブリッド3Dスポンジによって、インビトロでのADSC付着、拡散および増殖が可能であることが示された。
MCT−キトサンハイブリッド3Dスポンジの物理的および化学的特徴付け:キトサンは、利用可能なアミンおよび水酸基によってもたらされる水素結合相互作用によってコラーゲンに物理的に結合する。この相互作用によって、ナノ粒子、バイオフィルム、バイオフォームおよび組織スポンジなどの安定なバイオマテリアルの形成が可能となる(Madrigal−Carballo et al.,Polymer−liposome nanoparticles obtained by the electrostatic bio−adsorption of natural polymers onto soybean lecithin liposomes,Intl.J.Nanoparticles 5(3)(2012)196−209;Madrigal−Carballo et al.,Protein−loaded chitosan nanoparticles modulate uptake and antigen presentation of hen egg−white lysozyme by murine peritoneal macrophages,Intl.J.Nanoparticles 3(2)(2010)179−191;Ma et al.,‘A preliminary in vitro study on the fabrication and tissue engineering applications of a novel chitosan bilayer material as a sponge of human neofetal dermal fibroblasts’,Biomaterials,22(4)(2001),pp.331−336)。図13Aは、作成されたMCT−キトサンハイブリッド3Dスポンジを示す。図13Aから分かるとおり、図示のハイブリッド3Dスポンジは、異なるMCT/CHT質量比(50:50、60:40、80:20および100:0)で作成されている。図13Bはスポンジの光学顕微鏡画像を示し、および、図13Cは、作成された3Dスポンジの各々のSEM顕微鏡写真である。図13Cにおいて、スケールバーは500μmである。
エレクトロスピニングによるナノファイバー(ESNF)をMCT−キトサン複合体材料から調製した。ポリビニルアルコール(PVA)を助剤として用いた。異なる体積比(100:0、80:20、60:40、40:60、20:80および0:100)のMCT−キトサン/PVA混合溶液を調製し、エレクトロスピニングに好適である粘度および導電性で同様となるよう調節した。ESNFの形態を、走査電子顕微鏡検査(SEM)、フーリエ変換赤外分光法(FTIR)および示差走査熱量測定法(DSC)を用いて試験した。研究は、ナノファイバー(NF)の化学的組成および熱特徴を特徴づけるために用いた。線維芽細胞増殖を支持するNFの能力を、最適化したMCT−キトサン/PVA溶液を用いてインビトロで調べた。結果は、MCT−キトサン系ESNFは線維芽細胞の成長にきわめて好適であり、PVAのESNFよりも相当に良好であることを示す。結果はまた、MCT−キトサンが、細胞増殖の支持に関して、キトサンのみの場合よりも良好であることを示す。
以下の配合物は、特にこれらに限定されないが、溶液、懸濁液、液体、ゲル、軟膏剤、ローションもしくはクリームを含む皮膚学的および/または薬学的に許容可能な局所的キャリアを利用する、本明細書に記載のMCTおよびMCT−キトサン(MCT−CHT)組成物の治療的または予防的投与に用いられ得る代表的な調合薬剤形を例示している。以下の例においては、ゲルまたはクリームが提供される。
1−150mgのビタミンEを計量し、これを、クリーム基剤分散体と穏やかに撹拌しながら混合する。
Claims (10)
- コラーゲン増殖、瘢痕治癒、創傷治癒、肝斑および褐色斑の低減を促進するための治療用化粧品であって:
棘皮動物から単離される易変性コラーゲン組織(MCT)およびキトサンであって、前記キトサンが前記MCTに静電結合してマトリックスを形成しており、前記キトサンおよびMCTの前記マトリックスがMCT−キトサン複合体材料の形態である、易変性コラーゲン組織(MCT)およびキトサン;ならびに
薬学的に許容可能な局所的キャリア
を含む、
治療用化粧品。 - 前記薬学的に許容可能な局所的キャリアが溶液、懸濁液、液体、ゲル、軟膏剤、ローションまたはクリームからなる群から選択される、請求項1に記載の治療用化粧品。
- 前記薬学的に許容可能な局所的キャリアがゲルである、請求項2に記載の治療用化粧品。
- 前記薬学的に許容可能な局所的キャリアがクリームである、請求項2に記載の治療用化粧品。
- 前記MCTは、ウニおよびナマコからなる群から選択される棘皮動物から単離されるMCTである、請求項1に記載の治療用化粧品。
- 前記MCTがコラーゲンおよびグリコサミノグリカン(GAG)を含む、請求項1に記載の治療用化粧品。
- 前記MCTが、I型、II型、III型、V型もしくはXI型から、または、I型、II型、III型、V型およびXI型の2種以上の混合物からなる群から選択される線維状コラーゲンからなる、請求項1に記載の治療用化粧品。
- 前記グリコサミノグリカンが、コンドロイチン硫酸およびヒアルロン酸から、または、コンドロイチン硫酸およびヒアルロン酸の混合物からなる群から選択される、請求項6に記載の治療用化粧品。
- MCT対キトサンの質量比が、10:90、20:80、40:60、50:50、60:40、80:20または90:10からなる群から選択される、請求項1に記載の治療用化粧品。
- 前記MCT−キトサン複合体が、MCT中のGAGとコラーゲンとの間に高分子電解質架橋構造を含み、キトサン上にN−グルコサミン単位を有する、請求項6に記載の治療用化粧品。
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CN104874014A (zh) * | 2015-05-22 | 2015-09-02 | 苏州市贝克生物科技有限公司 | 一种医用止血封堵敷料的制备方法 |
CN105533710A (zh) * | 2015-12-30 | 2016-05-04 | 威海力元海洋生物科技有限公司 | 一种海参壳寡糖硒制剂及制备工艺 |
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