摘要:
A skin care composition for stimulating selective catabolysis in cells of keratin surfaces comprising at least one autophagy activator and at least one proteasome activator, and a method for improving selective catabolysis in cells of keratin surfaces by treating with the composition.
摘要:
Compositions and methods for lightening and/or depigmenting skin are provided, the compositions comprising compounds having the structure: wherein: R1 and R2 are same or different and are each selected from the group consisting of hydrogen, alkyl, carbomethoxy, carboethoxy, alkoxy, and alkanoyl, any of which may be halogen-substituted, and halogen; R6 is selected from the group consisting of hydrogen, methyl, and ethyl; and R3, R4 and R5 are the same or different and are each selected from the group consisting of hydrogen, methyl, methoxy, ethoxy, methoxyethoxy, ethoxyethoxy, propoxy, propoxymethoxy, and the like, any of which may be halogen-substituted; or having the structure: wherein: R2 is hydrogen, lower alkyl or hydroxy lower alkyl; R3 is lower alkyl, —CH2CN, hydroxy lower alkyl, —NO, —CH2N═C or (wherein R6 and R7 are independently selected from the group consisting of hydrogen and lower alkyl) or hydrogen provided R2 is not hydrogen; R4 is Z-T-W wherein Z represents —O—, —NH— or a single bond; T represents a straight- or branched-chain lower-alkylene group; when Z is a single bond, T also represents an ethenylene or a propenylene group wherein the unsaturated carbon is at the single bond; when Z is —O—, T also represents an allylene group wherein the saturated carbon is at the oxygen; and W represents hydrogen, when T is allylene and Z is —O—, and Ar, wherein Ar is selected from thienyl, pyridinyl, furanyl, phenyl and substituted phenyl wherein there are one or more substituents on the phenyl independently selected from halogen or lower alkyl; and R5 is hydrogen, halogen or lower alkyl; or pharmaceutically-, cosmetically- and dermatologically-acceptable salts, solvates, and bioprecursors, and stereoisomers and enantiomers of these compounds, free from or mixed with other enantiomers or stereoisomers; and such compounds in compositions with a pharmaceutically-, cosmetically- or dermatologically-acceptable carrier thereof comprising a safe and effective amount of the skin lightening or depigmenting compound.
摘要:
Compositions comprising ergothioneine and a trimethylamine absorber are provided. Also provided are methods for preventing, reducing or minimizing the fishy, amine odor, due to trimethylamine, that is associated with the processing and/or storage of a preparation containing ergothioneine, by combining with the ergothioneine, during processing or prior to storage, a trimethylamine absorber in an amount sufficient to prevent the detection of any trimethylamine odor by the human nose. A method is further provided for ameliorating the methylamine odor associated with an aqueous ergothioneine-containing preparation after it has developed a fishy trimethylamine odor.
摘要:
Exposing the skin to UV radiation interferes with the induction of the T-cell mediated immune response, including both delayed (DHS) and contact (CHS) hyper-sensitivity immune responses initiated at non-irradiated sites. The present inventors have discovered that DNA is at least one of the targets for UV-induced hypersensitivity, and demonstrate that the application of DNA repair enzymes can reverse the damaging effects of UV irradiation on both the DHS and CHS response. The usefulness of the invention in this regard was tested using a model immunosuppression system in mice. In these studies, mice were first exposed to UV radiation and then liposomes were used to deliver a dimer-specific excision repair enzyme to their epidermis in situ. The application of liposomal T4 endonuclease V encapsulated to the UV-irradiated skin both decreased the number of cyclobutane pyrimidine dimers in the epidermis and prevented suppression of both delayed and contact hypersensitivity responses. Moreover, the formation of suppressor lymphoid cells was inhibited. These studies illustrate that the delivery of lesion-specific DNA repair enzymes to living skin after UV irradiation is an effective tool for restoring immune function and suggest that this approach may be broadly applicable to preventing other alterations caused by DNA damage, including preventing or reversing viral activation (e.g., herpes virus activation), oncogene expression, or autoimmune episodes.
摘要:
Methods for purifying DNA repair enzymes are provided in which an aqueous solution of a DNA repair enzyme in an impure state is applied to a molecular sieve column having an exclusion limit which will retard the DNA repair enzyme but will not retard contaminants larger than the DNA repair enzyme. The DNA repair enzyme in an enhanced state of purity is eluted isocratically from the molecular sieve column in an elution buffer and applied directly to a DNA affinity column in the same buffer without intermediate dialysis, ultrafiltration, or other procedures. The DNA repair enzyme is eluted from the DNA affinity column using, for example, a salt gradient. The method is rapid, inexpensive, simple to perform, and has been found to produce a homogeneous final product. In accordance with other aspects of the invention, the purified DNA repair enzymes are encapsulated in liposomes and administered to living cells in situ. This form of administration has been found to be non-toxic to the cells and to result in increased incision of damaged DNA, enhanced DNA repair synthesis, and increased cell survival after exposure to ultraviolet light. In certain preferred embodiments, DNA repair enzymes are administered in pH sensitive liposomes.
摘要:
Compositions comprising ergothioneine and a trimethylamine absorber are provided. Also provided are methods for preventing, reducing or minimizing the fishy, amine odor, due to trimethylamine, that is associated with the processing and/or storage of a preparation containing ergothioneine, by combining with the ergothioneine, during processing or prior to storage, a trimethylamine absorber in an amount sufficient to prevent the detection of any trimethylamine odor by the human nose. A method is further provided for ameliorating the methylamine odor associated with an aqueous ergothioneine-containing preparation after it has developed a fishy trimethylamine odor.
摘要:
Compositions comprising ergothioneine and a trimethylamine absorber are provided. Also provided are methods for preventing, reducing or minimizing the fishy, amine odor, due to trimethylamine, that is associated with the processing and/or storage of a preparation containing ergothioneine, by combining with the ergothioneine, during processing or prior to storage, a trimethylamine absorber in an amount sufficient to prevent the detection of any trimethylamine odor by the human nose. A method is further provided for ameliorating the methylamine odor associated with an aqueous ergothioneine-containing preparation after it has developed a fishy trimethylamine odor.
摘要:
Compositions and methods for lightening and/or depigmenting skin are provided, the compositions comprising compounds having the structure: or having the structure: as defined herein.
摘要:
Methods for purifying DNA repair enzymes are provided in which an aqueous solution of a DNA repair enzyme in an impure state is applied to a molecular sieve column having an exclusion limit which will retard the DNA repair enzyme but will not retard contaminants larger than the DNA repair enzyme. The DNA repair enzyme in an enhanced state of purity is eluted isocratically from the molecular sieve column in an elution buffer and applied directly to a DNA affinity column in the same buffer without intermediate dialysis, ultrafiltration, or other procedures. The DNA repair enzyme is eluted from the DNA affinity column using, for example, a salt gradient. The method is rapid, inexpensive, simple to perform, and has been found to produce a homogeneous final product. In accordance with other aspects of the invention, the purified DNA repair enzymes are encapsulated in liposomes and administered to living cells in situ. This form of administration has been found to be non-toxic to the cells and to result in increased incision of damaged DNA, enhanced DNA repair synthesis, and increased cell survival after exposure to ultraviolet light. In certain preferred embodiments, DNA repair enzymes are administered in pH sensitive liposomes.
摘要:
Methods for purifying DNA repair enzymes are provided in which an aqueous solution of a DNA repair enzyme in an impure state is applied to a molecular sieve column having an exclusion limit which will retard the DNA repair enzyme but will not retard contaminants larger than the DNA repair enzyme. The DNA repair enzyme in an enhanced state of purity is eluted isocratically from the molecular sieve column in an elution buffer and applied directly to a DNA affinity column in the same buffer without intermediate dialysis, ultrafiltration, or other procedures. The DNA repair enzyme is eluted from the DNA affinity column using, for example, a salt gradient. The method is rapid, inexpensive, simple to perform, and has been found to produce a homogeneous final product. In accordance with other aspects of the invention, the purified DNA repair enzymes are encapsulated in liposomes and administered to living cells in situ. This form of administration has been found to be non-toxic to the cells and to result in increased incision of damaged DNA, enhanced DNA repair synthesis, and increased cell survival after exposure to ultraviolet light.