Abstract: The disclosure of the present invention relates to the provision of compositions effective for improving skin conditions from the viewpoint of maintaining or improving quality of life (QOL) in terms of both health and beauty. More specifically, the disclosure of the present invention relates to compositions comprising 1-(2-hydroxyethyl)-2-imidazoliclinone or a derivative thereof and pyriclinecarboxamide. As they promote the increase of epidermal stem cells and facilitate the proliferation of keratinocytes, they can be suitably used as a cosmetic composition such as cosmetics that are effective in improving skin conditions.

Abstract: The purpose of this invention is to provide a method with which it is easy to perform screening for an agent that proliferates or an agent that minimizes the reduction in MCSP-positive basal epidermal stem cells. Provided is a screening method for a laminin 511 expression promoter, which takes the expression of laminin 511 as an indicator. Also provided is an agent for improving skin barrier function, elasticity, hydration and inflammation, said agent including at least one extract selected from among a group consisting of brown algae, red algae and green algae.

Abstract: Provided is a screening method for a laminin 511 expression promoter, which takes the expression of laminin 511 as an indicator. Also provided is an agent for improving skin barrier function, elasticity, hydration and inflammation. This agent includes at least one extract selected from among a group consisting of brown algae, red algae and green algae.

Abstract: The purpose of this invention is to provide a method with which it is easy to perform screening for an agent that proliferates or an agent that minimizes the reduction in MCSP-positive basal epidermal stem cells. Provided is a screening method for a laminin 511 expression promoter, which takes the expression of laminin 511 as an indicator. Also provided is an agent for improving skin barrier function, elasticity, hydration and inflammation, said agent including at least one extract selected from among a group consisting of brown algae, red algae and green algae.

Abstract: The present invention relates to a method for producing artificial skin, comprising: adding a matrix metalloproteinase inhibitor and a heparanase inhibitor to an artificial skin formation culture medium comprising human epidermal keratinocytes and human dermal fibroblasts, culturing the cells in the artificial skin formation culture medium, and forming artificial skin.

Abstract: The present invention relates to a method for producing artificial skin, comprising: adding a matrix metalloproteinase inhibitor and a heparanase inhibitor to an artificial skin formation culture medium comprising human epidermal keratinocytes and human dermal fibroblasts, culturing the cells in the artificial skin formation culture medium, and forming artificial skin.

Abstract: The present invention relates to a method for producing artificial skin, comprising: adding a matrix metalloproteinase inhibitor and a heparanase inhibitor to an artificial skin formation culture medium comprising human epidermal keratinocytes and human dermal fibroblasts, culturing the cells in the artificial skin formation culture medium, and forming artificial skin.

Abstract: Wrinkles are improved by applying an oral preparation, injection preparation or external skin preparation having a substance that controls heparanase as an active ingredient thereof.

Abstract: A heparanase activity inhibitor containing, as an active ingredient, a 4-alkylresorcinol represented by formula (I): wherein R represents a C1-6 linear or branched alkyl group.

Abstract: The present invention relates to a method for producing artificial skin, comprising: adding a matrix metalloproteinase inhibitor and a heparanase inhibitor to an artificial skin formation culture medium comprising human epidermal keratinocytes and human dermal fibroblasts, culturing the cells in the artificial skin formation culture medium, and forming artificial skin.

Abstract: A heparanase activity inhibitor comprising, as an active ingredient, a cyclic carboxamide derivative represented by formula (I): wherein n is an integer of 1 to 3, R1 is hydrogen or a C1-6 hydrocarbon group optionally substituted with hydroxyl, X is —CH2— or a group represented by —N(R2)—, and R2 is hydrogen or a C1-6 hydrocarbon group optionally substituted with hydroxyl, or a salt thereof.

Abstract: The present invention relates to a method for producing artificial skin, comprising: adding a matrix metalloproteinase inhibitor and a heparanase inhibitor to an artificial skin formation culture medium comprising human epidermal keratinocytes and human dermal fibroblasts, culturing the cells in the artificial skin formation culture medium, and forming artificial skin.

Abstract: A heparanase activity inhibitor comprising, as an active ingredient, a cyclic carboxamide derivative represented by formula (I): wherein n is an integer of 1 to 3, R1 is hydrogen or a C1-6 hydrocarbon group optionally substituted with hydroxyl, X is —CH2— or a group represented by —N(R2)—, and R2 is hydrogen or a C1-6 hydrocarbon group optionally substituted with hydroxyl, or a salt thereof.

Abstract: A heparanase activity inhibitor comprising, as an active ingredient, a cyclic carboxamide derivative represented by formula (I): wherein n is an integer of 1 to 3, R1 is hydrogen or a C1-6 hydrocarbon group optionally substituted with hydroxyl, X is —CH2— or a group represented by —N(R2)—, and R2 is hydrogen or a C1-6 hydrocarbon group optionally substituted with hydroxyl, or a salt thereof.

Abstract: The present invention relates to a method for producing artificial skin, comprising: adding a matrix metalloproteinase inhibitor and a heparanase inhibitor to an artificial skin formation culture medium comprising human epidermal keratinocytes and human dermal fibroblasts, culturing the cells in the artificial skin formation culture medium, and forming artificial skin.

Abstract: An object of the present invention is to provide prevent or improve decreases in the barrier function and moisture retention function of the skin, and that object is achieved by applying an external preparation for skin that comprises a matrix metalloproteinase inhibitor and a heparanase inhibitor.

Abstract: Disclosed is a cell transformed by a vector containing human Wnt3a gene, wherein the cell is selected from a group consisting of hair follicle-derived cells and prostate cancer-derived cells.

Abstract: A heparanase activity inhibitor comprising, as an active ingredient, a cyclic carboxamide derivative represented by formula (I): wherein n is an integer of 1 to 3, R1 is hydrogen or a C1-6 hydrocarbon group optionally substituted with hydroxyl, X is —CH2— or a group represented by —N(R2)—, and R2 is hydrogen or a C1-6 hydrocarbon group optionally substituted with hydroxyl, or a salt thereof.

Abstract: A heparanase activity inhibitor containing, as an active ingredient, a 4-alkylresorcinol represented by formula (I): wherein R represents a C1-6 linear or branched alkyl group.

Abstract: Wrinkles are improved by applying an oral preparation, injection preparation or external skin preparation having a substance that controls heparanase as an active ingredient thereof.