JP2010172200A - Rough skin model using dry skin, and method for evaluating medicine for enhancing horny cell layer transparency with the same - Google Patents

Rough skin model using dry skin, and method for evaluating medicine for enhancing horny cell layer transparency with the same Download PDF

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JP2010172200A
JP2010172200A JP2009015168A JP2009015168A JP2010172200A JP 2010172200 A JP2010172200 A JP 2010172200A JP 2009015168 A JP2009015168 A JP 2009015168A JP 2009015168 A JP2009015168 A JP 2009015168A JP 2010172200 A JP2010172200 A JP 2010172200A
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rough skin
stratum corneum
skin
skin model
drug
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Ichiro Iwai
一郎 岩井
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Shiseido Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a rough skin model achieving skin roughness caused in a living body in order to constitute a high through-put screening system enabling to simply evaluate whether many candidate substances are effective for skin roughness. <P>SOLUTION: This rough skin model skin comprises a horny cell layer sheet isolated from a skin tissue maintained under culture and then dried, and a method for evaluating a medicine for enhancing the transparency of horny cell layer uses the model skin. The evaluation method comprises a step of preparing the medicine, and a rough skin model skin comprising the horny cell layer sheet isolated from a skin tissue maintained under culture and then dried, a step of administering the medicine to the rough skin model skin, and a step of obtaining the total transmittance of the rough skin model skin. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、乾燥させた表皮を用いた肌荒れモデルと、これを用いた角層透明度を高める薬剤の評価方法とに関する。   The present invention relates to a rough skin model using a dried epidermis, and a method for evaluating a drug using the same to increase stratum corneum transparency.

肌荒れに有効な化粧品及びその原料を開発するための評価方法として、従来は生体の皮膚が用いられてきた。肌荒れは、湿度の低い冬期にはよく発生するが、湿度の高い夏期にはあまり起こらない。そのため、自然に肌荒れを起こしたヒト被検者の皮膚を使って、肌荒れに有効な物質を高いスループットで通年スクリーニングすることは実際的ではない。人工的に肌荒れを惹起させるために界面活性剤のような化学物質を皮膚に適用する場合には、該化学物質が評価対象の物質と反応するため、肌荒れのスクリーニング方法としての有用性が限定される。   Conventionally, living body skin has been used as an evaluation method for developing cosmetics and raw materials effective for rough skin. Rough skin occurs frequently in the winter when the humidity is low, but does not occur much in the summer when the humidity is high. For this reason, it is not practical to use a human subject's skin that naturally causes rough skin to screen for substances effective for rough skin throughout the year with high throughput. When a chemical substance such as a surfactant is applied to the skin in order to artificially cause rough skin, the chemical substance reacts with the substance to be evaluated, so that its usefulness as a screening method for rough skin is limited. The

肌荒れになった皮膚では、角層は粉を吹いたように不透明になり、皮膚のバリヤ機能が失われるため経皮水分蒸散量(TEWL)が増加し、角層水分量が低下する。非特許文献1は乳がん除去手術の際に採取された胸部の皮膚から単離された角層シートのTEWLを測定する装置及び方法を開示する。しかし、前記装置及び方法を用いるTEWLの測定に関する報告は、低湿時などに起る肌荒れとの関連を明らかにしていない。   In skin that has become rough, the stratum corneum becomes opaque as if powdered, and the barrier function of the skin is lost, so that the transdermal water transpiration (TEWL) increases and the stratum corneum water content decreases. Non-Patent Document 1 discloses an apparatus and method for measuring TEWL of a stratum corneum sheet isolated from breast skin collected during breast cancer removal surgery. However, the report on the measurement of TEWL using the apparatus and method does not clarify the relationship with rough skin that occurs at low humidity.

Norlen, L.ら、J. Invest. Dermatol.,113:533−540,1999.Norlen, L.M. Et al. Invest. Dermatol. 113: 533-540, 1999.

そこで、多数の候補物質について簡便に肌荒れに有効かどうかを評価することのできるスループットの高いスクリーニング系を構築するために、生体で起こる肌荒れを再現した肌荒れモデルを開発する必要がある。また、前記肌荒れモデルを利用する肌荒れを改善する薬剤の製造方法を開発する必要がある。   Therefore, in order to construct a screening system with high throughput that can easily evaluate whether or not many candidate substances are effective for rough skin, it is necessary to develop a rough skin model that reproduces rough skin that occurs in a living body. In addition, it is necessary to develop a method for producing a drug that improves rough skin using the rough skin model.

本発明は、培養下で維持された表皮組織から単離された後に乾燥された角層シートからなる肌荒れモデル表皮を提供する。   The present invention provides a rough skin model epidermis comprising a stratum corneum sheet that has been isolated from epidermal tissue maintained in culture and then dried.

本発明は、培養下で維持された表皮組織から単離された後相対湿度30%の条件下で乾燥された角層シートからなる肌荒れモデル表皮を提供する。   The present invention provides a rough skin model epidermis comprising a stratum corneum sheet isolated from epidermal tissue maintained in culture and then dried under conditions of 30% relative humidity.

本発明は、培養下で維持された表皮組織から単離された後に低湿下で乾燥された角層シートからなり、高湿下で乾燥されたものより全透過率が低いことを特徴とする肌荒れモデル表皮を提供する。   The present invention comprises a stratum corneum sheet isolated from epidermal tissue maintained in culture and then dried under low humidity, and rough skin characterized by having a lower total transmittance than that dried under high humidity Provide model epidermis.

本発明は、角層透明度を高める薬剤の評価方法を提供する。前記評価方法は、前記薬剤と、培養下で維持された表皮組織から単離された後に乾燥された角層シートからなる肌荒れモデル表皮とを用意するステップと、前記薬剤を前記肌荒れモデル表皮に投与するステップと、前記肌荒れモデル表皮の全透過率を得るステップとを含む。   The present invention provides a method for evaluating a drug that enhances stratum corneum transparency. The evaluation method comprises the steps of preparing the drug and a rough skin model epidermis consisting of a horny layer sheet that has been isolated from an epidermal tissue maintained in culture and then dried, and the drug is administered to the rough skin model epidermis And a step of obtaining the total transmittance of the rough skin model epidermis.

本発明は、角層透明度を高める薬剤の評価方法を提供する。前記評価方法は、前記薬剤と、培養下で維持された表皮組織とを用意するステップと、前記薬剤を前記培養下で維持された表皮組織に投与するステップと、前記表皮組織から単離された後に乾燥された角層シートからなる肌荒れモデル表皮を調製するステップと、前記肌荒れモデル表皮の全透過率を得るステップとを含む。   The present invention provides a method for evaluating a drug that enhances stratum corneum transparency. The evaluation method comprises the steps of preparing the drug and epidermal tissue maintained in culture, administering the drug to the epidermal tissue maintained in culture, and being isolated from the epidermal tissue The method includes the steps of preparing a rough skin model skin composed of a dried stratum corneum sheet, and obtaining the total transmittance of the rough skin model skin.

本発明は、本発明の角層透明度を高める薬剤の評価方法によってスクリーニングされるステップを含む、肌荒れを改善する薬剤の製造方法を提供する。   This invention provides the manufacturing method of the chemical | medical agent which improves rough skin including the step screened by the evaluation method of the chemical | medical agent which improves the stratum corneum transparency of this invention.

本発明は、皮膚バリヤ機能を改善及び/又は向上させる活性を有する薬剤の評価方法を提供する。前記評価方法は、前記薬剤と、培養下で維持された表皮組織から単離された後に乾燥された角層シートからなる肌荒れモデル表皮とを用意するステップと、前記薬剤を前記肌荒れモデル表皮に投与するステップと、前記肌荒れモデル表皮の全透過率を得るステップとを含む。   The present invention provides a method for evaluating a drug having an activity of improving and / or improving skin barrier function. The evaluation method comprises the steps of preparing the drug and a rough skin model epidermis consisting of a horny layer sheet that has been isolated from an epidermal tissue maintained in culture and then dried, and the drug is administered to the rough skin model epidermis And a step of obtaining the total transmittance of the rough skin model epidermis.

本発明は、皮膚バリヤ機能を改善及び/又は向上させる活性を有する薬剤の評価方法を提供する。前記評価方法は、前記薬剤と、培養下で維持された表皮組織とを用意するステップと、前記薬剤を前記培養下で維持された表皮組織に投与するステップと、前記表皮組織から単離された後に乾燥された角層シートからなる肌荒れモデル表皮を調製するステップと、前記肌荒れモデル表皮の全透過率を得るステップとを含む。   The present invention provides a method for evaluating a drug having an activity of improving and / or improving skin barrier function. The evaluation method comprises the steps of preparing the drug and epidermal tissue maintained in culture, administering the drug to the epidermal tissue maintained in culture, and being isolated from the epidermal tissue The method includes the steps of preparing a rough skin model skin composed of a dried stratum corneum sheet, and obtaining the total transmittance of the rough skin model skin.

本発明は、本発明の皮膚バリヤ機能を改善及び/又は向上させる活性を有する薬剤の評価方法によってスクリーニングされるステップを含む、肌荒れを改善する薬剤の製造方法を提供する。   This invention provides the manufacturing method of the chemical | medical agent which improves rough skin including the step screened by the evaluation method of the chemical | medical agent which has the activity which improves and / or improves the skin barrier function of this invention.

本発明の透明度測定装置の模式図。The schematic diagram of the transparency measuring apparatus of this invention. 異なる湿度条件で乾燥させた角層シートの角層全透過率を示すグラフ。The graph which shows the stratum corneum total transmittance | permeability of the stratum corneum sheet dried on different humidity conditions. 異なる湿度条件で乾燥させた角層シートの水分蒸散量を示すグラフ。The graph which shows the moisture transpiration | evaporation amount of the stratum corneum sheet dried on different humidity conditions.

本明細書において「培養下で維持される表皮組織」とは、ヒト又は実験動物の皮膚から採取した皮膚組織か、胚性幹細胞又は成体幹細胞を試験管内で分化させて得られた皮膚組織かを重層構造を維持しながら試験管内で培養した組織をいう。特にヒトについては、LabCyte EPI−MODEL(株式会社ジャパン・ティッシュ・エンジニアリング)のような商業的に入手可能なヒト3次元培養表皮モデル製品を用いる場合がある。   As used herein, “epidermal tissue maintained in culture” refers to skin tissue collected from human or laboratory animal skin, or skin tissue obtained by differentiating embryonic stem cells or adult stem cells in vitro. Tissue that has been cultured in a test tube while maintaining a multilayer structure. Particularly for humans, commercially available human three-dimensional cultured epidermis model products such as LabCyte EPI-MODEL (Japan Tissue Engineering Co., Ltd.) may be used.

培養下で維持された表皮組織から角層シートを単離するには、前記表皮組織をカルシウムイオン及びマグネシウムイオン濃度を制御した生理食塩水中でタンパク質分解酵素で処理する等の手法を用いることができる。前記角層シートを表皮組織から剥離又は単離した直後、あるいは、なんらかの処理後に全透過率が測定される場合もある。代替的には、温度及び湿度が制御可能な恒温恒湿インキュベータを用いて調製した後に全透過率が測定される場合がある。   In order to isolate the stratum corneum sheet from the epidermal tissue maintained in culture, a technique such as treating the epidermal tissue with a proteolytic enzyme in physiological saline with controlled calcium ion and magnesium ion concentrations can be used. . In some cases, the total transmittance may be measured immediately after the stratum corneum sheet is peeled or isolated from the epidermal tissue, or after any treatment. Alternatively, the total transmittance may be measured after preparation using a constant temperature and humidity incubator with controllable temperature and humidity.

本発明において、「低湿下で乾燥」するとは、相対湿度30%以下で乾燥するとことをいう。本発明のおいて「高湿下で乾燥」するとは、前記「低湿下で乾燥」する条件より高いいずれかの相対湿度で乾燥することをいう。「高湿下で乾燥」する条件としては、30%を超えるいずれかの相対湿度で乾燥することが好ましく、60%以上の相対湿度で乾燥することがより好ましい。   In the present invention, “drying under low humidity” means drying at a relative humidity of 30% or less. In the present invention, “drying under high humidity” means drying at any relative humidity higher than the condition of “drying under low humidity”. As a condition for “drying under high humidity”, it is preferable to dry at any relative humidity exceeding 30%, and more preferable to dry at a relative humidity of 60% or more.

本明細書において「角層透明度」とは、本発明の角層シートの透明性の程度をいう。角層透明度は、本発明の角層シートを透過して測光した白色光の強度の測定値を、該生体組織サンプルのかわりにブランク状態で測光した白色光の強度の測定値で除算した百分率である、全透過率によって評価される。   In the present specification, “corneal layer transparency” refers to the degree of transparency of the stratum corneum sheet of the present invention. The stratum corneum transparency is a percentage obtained by dividing the measured value of the intensity of white light measured through the stratum corneum sheet of the present invention by the measured value of the intensity of white light measured in a blank state instead of the biological tissue sample. It is evaluated by the total transmittance.

本発明の角層透明度の評価装置は、白色光源と、生体組織サンプルの保持具と、集光器と、測光器とを含み、前記白色光源、前記生体組織サンプルの保持具、前記集光器及び前記測光器は、前記白色光源から発して、前記保持具に保持される前記生体組織サンプルを透過した光だけが前記集光器に導かれ、該集光器から導かれた光の強度が前記測光器によって計測されるように配置される。   The stratum corneum transparency evaluation apparatus of the present invention includes a white light source, a biological tissue sample holder, a condenser, and a photometer, and the white light source, the biological tissue sample holder, and the condenser. And the photometer emits only the light emitted from the white light source and transmitted through the biological tissue sample held by the holder to the collector, and the intensity of the light guided from the collector is It arrange | positions so that it may measure with the said photometer.

本発明の角層透明度の評価装置において、白色光源とは、発光スペクトルの分布が可視領域のほぼ全域にわたっていて肉眼で白色に見えるような光の光源をいう。生体組織サンプルの保持具は、新鮮な皮膚から剥離された角層が付着した前記透明な固体支持体や、培養下で維持される表皮組織から調製された角層シートを含むがこれらに限られない生体組織サンプルが前記白色光源からの光路を横切る位置に保持することができることを条件としていかなる形状のものであってもかまわない。集光器は、前記生体組織サンプルを透過した光を集めて均一化して、測光器に導くことができることを条件としていかなる形状及び/又は構造のものであってもかまわない。好ましい集光器は積分球である。前記生体組織サンプルを透過した光だけが前記集光器に入射するように、前記生体組織サンプルと集光器の間に遮光体が設けられる場合がある。好ましい遮光体は暗幕である。測光器は集光器から導かれた可視光の強度を測定することができることを条件としていかなる種類の測光器であってもかまわない。好ましい測光器は光電素子である。   In the evaluation device for stratum corneum transparency of the present invention, the white light source refers to a light source whose emission spectrum is distributed almost over the entire visible region and appears white with the naked eye. The biological tissue sample holder includes, but is not limited to, the transparent solid support to which the stratum corneum peeled from fresh skin is attached, and a stratum corneum sheet prepared from epidermal tissue maintained in culture. It may be of any shape provided that no living tissue sample can be held in a position across the light path from the white light source. The collector may be of any shape and / or structure provided that the light transmitted through the biological tissue sample can be collected and uniformed and guided to the photometer. A preferred collector is an integrating sphere. There is a case where a light-shielding body is provided between the biological tissue sample and the collector so that only light transmitted through the biological tissue sample is incident on the collector. A preferred light shield is a black curtain. The photometer may be any type of photometer provided that it can measure the intensity of visible light guided from the condenser. A preferred photometer is a photoelectric element.

本明細書において、「皮膚バリヤ機能」は、経皮水分蒸散量(TEWL)によって評価される。TEWLの測定は、フランツセル(PermeGear,Inc.、米国)のように、鉛直方向に隣接し、着脱可能に角層シートで隔てられた2個のチャンバーを有する装置を用いて実施される。前記チャンバーのうち下のチャンバーには水溶液を満たし、上のチャンバーには空気が入っていて、前記角層シートを通過して下のチャンバーから上のチャンバーの空気に流入した水分蒸散量は、VapoMeter(Delfin technologies Ltd.、フィンランド)のようなエバポリメータを用いて測定される。   In this specification, “skin barrier function” is evaluated by transdermal water transpiration (TEWL). The TEWL measurement is performed using a device such as Franz Cell (PermeGear, Inc., USA) that has two chambers that are vertically adjacent and detachably separated by a stratum corneum sheet. Of the chambers, the lower chamber is filled with an aqueous solution, and the upper chamber is filled with air. The amount of water transpiration that has passed through the stratum corneum sheet and flows into the air in the upper chamber from the lower chamber is VapoMeter. It is measured using an evaporator polymeter such as (Delfin technologies Ltd., Finland).

以下の実施例によって本発明について詳細な説明を行なうが、本発明はこれらの実施例により何ら制限されるものではない。   The present invention will be described in detail with reference to the following examples, but the present invention is not limited to these examples.

方法
(角層の調製)
12穴プレートの3次元ヒト表皮培養モデル(LabCyte EPI−MODEL、株式会社ジャパン・ティッシュ・エンジニアリング)を、0.1%トリプシン溶液/等張リン酸緩衝液中で37°Cで30分間インキュベーションすることにより、直径約10mmの角層シートを調製した。該角層シートを、恒温恒湿槽MTH−2200(三洋電機株式会社)を用いて、温度34°C、相対湿度30%、60%又は90%の条件下で18時間乾燥させた。
Method (Preparation of stratum corneum)
Incubate 3D human epidermis culture model (LabCyte EPI-MODEL, Japan Tissue Engineering Co., Ltd.) in 12-well plate at 37 ° C for 30 minutes in 0.1% trypsin solution / isotonic phosphate buffer. Thus, a horny layer sheet having a diameter of about 10 mm was prepared. The horny layer sheet was dried for 18 hours under the conditions of a temperature of 34 ° C. and a relative humidity of 30%, 60% or 90% using a thermo-hygrostat MTH-2200 (Sanyo Electric Co., Ltd.).

(角層全透過率の測定)
図1に本発明の透明度測定装置の模式図を示す。本発明の透明度測定装置は、CIE(国際照明委員会)標準光源C規格の白色光源と、角層サンプルの保持具(図示されない)と、角層サンプルを透過しない光の遮光体としての暗幕と、角層サンプルを透過した光を均一化する積分球と、積分球から導かれた光の強度を測定する測光器(図示されない)とを含む。1−1で説明したとおり調製された角層シートを本発明の透明度測定装置に装着し、前記光源からの白色光を照射して前記角層シートを透過した光を積分球に導いて均一化された光の強度を測定した。結果は、全透過率、すなわち、前記角層シートを透過した光の強度の測定値を、角層シートを装着しないブランク状態で前記光源からの白色光を直接積分球に導いた光の強度の測定値で除算した百分率で表した。
(Measurement of total stratum corneum transmittance)
FIG. 1 shows a schematic diagram of the transparency measuring apparatus of the present invention. The transparency measuring apparatus of the present invention includes a CIE (International Commission on Illumination) standard light source C standard white light source, a stratum corneum sample holder (not shown), and a black curtain as a light shield that does not transmit the stratum corneum sample An integrating sphere for uniformizing the light transmitted through the stratum corneum sample, and a photometer (not shown) for measuring the intensity of the light guided from the integrating sphere. The stratum corneum sheet prepared as described in 1-1 is mounted on the transparency measuring apparatus of the present invention, and the white light from the light source is irradiated and the light transmitted through the stratum corneum is guided to an integrating sphere for uniformization. The intensity of the emitted light was measured. The result is the total transmittance, that is, the measured value of the intensity of the light transmitted through the stratum corneum sheet. Expressed as a percentage divided by the measured value.

(角層からの水分蒸散量の測定)
フランツセル(PermeGear,Inc.、米国)に乾燥処理後の角層シートを装着した。前記角層シートに対してレシーバー側を水で満たし、ドナー側を空に保つことにより、前記角層シートの上面を気相に、下面を液相に曝して、角層シートを気液界面に配置した。角層からの水分蒸散が安定する2時間後にVapoMeter(Delfin technologies Ltd.、フィンランド)をネールモードで水分蒸散量を測定した。
(Measurement of moisture transpiration from the stratum corneum)
A stratum corneum sheet after drying treatment was attached to Franz Cell (PermeGear, Inc., USA). Filling the receiver side with water and keeping the donor side empty with respect to the stratum corneum sheet, the top surface of the stratum corneum sheet is exposed to the gas phase and the bottom surface to the liquid phase, and the stratum corneum sheet is brought to the gas-liquid interface. Arranged. Two hours after the transpiration from the stratum corneum was stabilized, the amount of transpiration was measured with a Vapometer (Delfin technologies Ltd., Finland) in the nail mode.

結果
図2は、異なる湿度条件で乾燥させた角層シートの角層全透過率を示すグラフである。図2の縦軸は全透過率で、横軸は角層シート乾燥時の湿度である。各乾燥条件における全透過率の値は4回の測定による算出値の平均値を示しており、誤差棒は標準偏差を示す。図2に示すとおり、乾燥操作時の相対湿度が低いほど、角層シートの全透過率は低いという結果が得られた。ここで、相対湿度30%で乾燥させた角層シートの全透過率の算出値と、60%又は90%で乾燥させた角層シートの全透過率の算出値との間で、対応の無いt検定を実施したところ、ともに危険率p<0.001で有意であった。
Results FIG. 2 is a graph showing the total stratum corneum transmittance of a stratum corneum sheet dried under different humidity conditions. The vertical axis in FIG. 2 is the total transmittance, and the horizontal axis is the humidity during drying of the stratum corneum sheet. The value of the total transmittance under each drying condition indicates an average value calculated by four measurements, and error bars indicate standard deviations. As shown in FIG. 2, the lower the relative humidity during the drying operation, the lower the total transmittance of the stratum corneum sheet. Here, there is no correspondence between the calculated value of the total transmittance of the stratum corneum sheet dried at 30% relative humidity and the calculated value of the total transmittance of the stratum corneum sheet dried at 60% or 90%. When t-test was performed, both were significant with a risk factor p <0.001.

図3は、異なる湿度条件で乾燥させた角層シートの水分蒸散量を示すグラフである。図3の縦軸は水分蒸散量(g/mhr)で、横軸は角層シート乾燥時の湿度である。各乾燥条件における全透過率の値は4回の測定による算出値の平均値を示しており、誤差棒は標準偏差を示す。図3に示すとおり、乾燥操作時の相対湿度が低いほど、角層シートからの水分蒸散量は高いという結果が得られた。ここで、相対湿度30%で乾燥させた角層シートからの水分蒸散量の測定値と、60%又は90%で乾燥させた角層シートからの水分蒸散量の測定値との間で、対応の無いt検定を実施したところ、ともに危険率p<0.005で有意であった。 FIG. 3 is a graph showing the amount of water transpiration of the stratum corneum sheet dried under different humidity conditions. The vertical axis in FIG. 3 is the amount of water transpiration (g / m 2 hr), and the horizontal axis is the humidity during drying of the stratum corneum sheet. The value of the total transmittance under each drying condition indicates an average value calculated by four measurements, and error bars indicate standard deviations. As shown in FIG. 3, the lower the relative humidity during the drying operation, the higher the amount of moisture transpiration from the stratum corneum sheet. Here, it corresponds between the measured value of moisture transpiration from the horny layer sheet dried at 30% relative humidity and the measured value of moisture transpiration from the horny layer sheet dried at 60% or 90%. When a t-test with no risk was performed, both were significant with a risk factor p <0.005.

図2及び3の結果から、相対湿度30%の条件下で乾燥させた角層は、60%又は90%で乾燥させた角層と比較して透明度及びバリア機能が低く、冬季の乾燥による肌荒れ状態の皮膚をより適切に表現していることがわかった。したがって、前記相対湿度30%の条件下で乾燥させた角層は、肌荒れ皮膚モデルとして利用可能であることが明らかになった。   2 and 3, the stratum corneum dried at 30% relative humidity has lower transparency and barrier function than the stratum corneum dried at 60% or 90%. It was found that the skin of the state was expressed more appropriately. Therefore, it was revealed that the stratum corneum dried under the condition of the relative humidity of 30% can be used as a rough skin model.

Claims (9)

培養下で維持された表皮組織から単離された後に乾燥された角層シートからなることを特徴とする、肌荒れモデル表皮。   A rough skin model epidermis comprising a stratum corneum sheet that has been isolated from epidermal tissue maintained in culture and then dried. 培養下で維持された表皮組織から単離された後、相対湿度30%の条件下で乾燥された角層シートからなることを特徴とする、肌荒れモデル表皮。   A rough skin model epidermis comprising a stratum corneum sheet isolated from epidermal tissue maintained in culture and then dried under conditions of 30% relative humidity. 培養下で維持された表皮組織から単離された後に低湿下で乾燥された角層シートからなり、高湿下で乾燥されたものより全透過率が低いことを特徴とする、肌荒れモデル表皮。   A rough skin model epidermis comprising a stratum corneum sheet isolated from epidermal tissue maintained in culture and then dried under low humidity, and having a lower total transmittance than that dried under high humidity. 角層透明度を高める薬剤の評価方法であって、
前記薬剤と、培養下で維持された表皮組織から単離された後に乾燥された角層シートからなる肌荒れモデル表皮とを用意するステップと、
前記薬剤を前記肌荒れモデル表皮に投与するステップと、
前記肌荒れモデル表皮の全透過率を得るステップとを含むことを特徴とする、角層透明度を高める薬剤の評価方法。
A method for evaluating a drug that increases stratum corneum transparency,
Preparing the drug and a rough skin model epidermis comprising a stratum corneum sheet that has been isolated and then dried from epidermal tissue maintained in culture;
Administering the agent to the rough skin model epidermis;
And a step of obtaining a total transmittance of the rough skin model epidermis.
角層透明度を高める薬剤の評価方法であって、
前記薬剤と、培養下で維持された表皮組織とを用意するステップと、
前記薬剤を前記培養下で維持された表皮組織に投与するステップと、
前記表皮組織から単離された後に乾燥された角層シートからなる肌荒れモデル表皮を調製するステップと、
前記肌荒れモデル表皮の全透過率を得るステップとを含むことを特徴とする、角層透明度を高める薬剤の評価方法。
A method for evaluating a drug that increases stratum corneum transparency,
Providing the drug and epidermal tissue maintained in culture;
Administering the agent to epidermal tissue maintained in the culture;
Preparing a rough skin model epidermis comprising a stratum corneum sheet isolated from the epidermis tissue and then dried;
And a step of obtaining a total transmittance of the rough skin model epidermis.
請求項4又は5に記載の方法によってスクリーニングされるステップを含むことを特徴とする、肌荒れを改善する薬剤の製造方法。   The manufacturing method of the chemical | medical agent which improves rough skin characterized by including the step screened by the method of Claim 4 or 5. 皮膚バリヤ機能を改善及び/又は向上させる活性を有する薬剤の評価方法であって、
前記薬剤と、培養下で維持された表皮組織から単離された後に乾燥された角層シートからなる肌荒れモデル表皮とを用意するステップと、
前記薬剤を前記肌荒れモデル表皮に投与するステップと、
前記肌荒れモデル表皮の全透過率を得るステップとを含むことを特徴とする、皮膚バリヤ機能を改善及び/又は向上させる活性を有する薬剤の評価方法。
A method for evaluating a drug having an activity to improve and / or improve skin barrier function,
Preparing the drug and a rough skin model epidermis comprising a stratum corneum sheet that has been isolated and then dried from epidermal tissue maintained in culture;
Administering the agent to the rough skin model epidermis;
A method for evaluating a drug having an activity of improving and / or improving skin barrier function, comprising the step of obtaining the total transmittance of the rough skin model epidermis.
皮膚バリヤ機能を改善及び/又は向上させる活性を有する薬剤の評価方法であって、
前記薬剤と、培養下で維持された表皮組織とを用意するステップと、
前記薬剤を前記培養下で維持された表皮組織に投与するステップと、
前記表皮組織から単離された後に乾燥された角層シートからなる肌荒れモデル表皮を調製するステップと、
前記肌荒れモデル表皮の全透過率を得るステップとを含むことを特徴とする、皮膚バリヤ機能を改善及び/又は向上させる活性を有する薬剤の評価方法。
A method for evaluating a drug having an activity to improve and / or improve skin barrier function,
Providing the drug and epidermal tissue maintained in culture;
Administering the agent to epidermal tissue maintained in the culture;
Preparing a rough skin model epidermis consisting of a stratum corneum sheet isolated from the epidermal tissue and then dried;
A method for evaluating a drug having an activity of improving and / or improving skin barrier function, comprising the step of obtaining the total transmittance of the rough skin model epidermis.
請求項7又は8に記載の方法によってスクリーニングされるステップを含むことを特徴とする、肌荒れを改善する薬剤の製造方法。   The manufacturing method of the chemical | medical agent which improves rough skin characterized by including the step screened by the method of Claim 7 or 8.
JP2009015168A 2009-01-27 2009-01-27 Rough skin model using dry skin, and method for evaluating medicine for enhancing horny cell layer transparency with the same Pending JP2010172200A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013099775A1 (en) 2011-12-26 2013-07-04 株式会社資生堂 Method for evaluating cosmetic
WO2013146151A1 (en) 2012-03-27 2013-10-03 株式会社資生堂 Method for evaluating cosmetic for effectiveness in improving wrinkles
US20190242880A1 (en) * 2015-12-16 2019-08-08 Laboratoires Expanscience Method for evaluating the effects of dehydration on children's skin

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JP2007127444A (en) * 2005-11-01 2007-05-24 Toyobo Co Ltd Method of evaluating moistureproofness
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013099775A1 (en) 2011-12-26 2013-07-04 株式会社資生堂 Method for evaluating cosmetic
KR20140108223A (en) 2011-12-26 2014-09-05 가부시키가이샤 시세이도 Method for evaluating cosmetic
WO2013146151A1 (en) 2012-03-27 2013-10-03 株式会社資生堂 Method for evaluating cosmetic for effectiveness in improving wrinkles
KR20140138746A (en) 2012-03-27 2014-12-04 가부시키가이샤 시세이도 Method for evaluating cosmetic for effectiveness in improving wrinkles
US20190242880A1 (en) * 2015-12-16 2019-08-08 Laboratoires Expanscience Method for evaluating the effects of dehydration on children's skin
US11892447B2 (en) * 2015-12-16 2024-02-06 Laboratoires Expanscience Method for evaluating the effects of dehydration on children's skin

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