EP1573042A1 - Verfahren zur bestimmung des enzymatischen status humaner haut in vitro - Google Patents
Verfahren zur bestimmung des enzymatischen status humaner haut in vitroInfo
- Publication number
- EP1573042A1 EP1573042A1 EP03782279A EP03782279A EP1573042A1 EP 1573042 A1 EP1573042 A1 EP 1573042A1 EP 03782279 A EP03782279 A EP 03782279A EP 03782279 A EP03782279 A EP 03782279A EP 1573042 A1 EP1573042 A1 EP 1573042A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- human skin
- skin
- homeostasis
- status
- methylumbelliferyl
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 52
- 230000002255 enzymatic effect Effects 0.000 title claims abstract description 35
- 238000000338 in vitro Methods 0.000 title claims abstract description 17
- 102000004190 Enzymes Human genes 0.000 claims abstract description 54
- 108090000790 Enzymes Proteins 0.000 claims abstract description 54
- 239000002537 cosmetic Substances 0.000 claims abstract description 19
- 238000012216 screening Methods 0.000 claims abstract description 9
- 238000010998 test method Methods 0.000 claims abstract description 6
- 239000000825 pharmaceutical preparation Substances 0.000 claims abstract description 4
- 238000003149 assay kit Methods 0.000 claims abstract description 3
- 210000003491 skin Anatomy 0.000 claims description 80
- 230000013632 homeostatic process Effects 0.000 claims description 19
- 108090000623 proteins and genes Proteins 0.000 claims description 19
- 102000004169 proteins and genes Human genes 0.000 claims description 18
- 230000006735 deficit Effects 0.000 claims description 17
- 201000010099 disease Diseases 0.000 claims description 17
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 17
- 238000012360 testing method Methods 0.000 claims description 17
- 239000013543 active substance Substances 0.000 claims description 16
- 210000000434 stratum corneum Anatomy 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 13
- 239000004480 active ingredient Substances 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 239000000872 buffer Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000036074 healthy skin Effects 0.000 claims description 3
- IPCSVZSSVZVIGE-UHFFFAOYSA-M hexadecanoate Chemical compound CCCCCCCCCCCCCCCC([O-])=O IPCSVZSSVZVIGE-UHFFFAOYSA-M 0.000 claims description 3
- BCHIXGBGRHLSBE-UHFFFAOYSA-N (4-methyl-2-oxochromen-7-yl) dihydrogen phosphate Chemical compound C1=C(OP(O)(O)=O)C=CC2=C1OC(=O)C=C2C BCHIXGBGRHLSBE-UHFFFAOYSA-N 0.000 claims description 2
- 108010093096 Immobilized Enzymes Proteins 0.000 claims description 2
- 239000000969 carrier Substances 0.000 claims description 2
- 238000010828 elution Methods 0.000 claims description 2
- 238000006911 enzymatic reaction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract 2
- 229940088598 enzyme Drugs 0.000 description 40
- 238000003556 assay Methods 0.000 description 7
- 238000000018 DNA microarray Methods 0.000 description 6
- 239000008057 potassium phosphate buffer Substances 0.000 description 6
- 230000007306 turnover Effects 0.000 description 5
- 108090001060 Lipase Proteins 0.000 description 4
- 102000004882 Lipase Human genes 0.000 description 4
- 239000004367 Lipase Substances 0.000 description 4
- 108091005804 Peptidases Proteins 0.000 description 4
- 239000004365 Protease Substances 0.000 description 4
- 102000005262 Sulfatase Human genes 0.000 description 4
- 235000019421 lipase Nutrition 0.000 description 4
- 108060007951 sulfatase Proteins 0.000 description 4
- 208000002874 Acne Vulgaris Diseases 0.000 description 3
- 102000035195 Peptidases Human genes 0.000 description 3
- 206010000496 acne Diseases 0.000 description 3
- 238000003491 array Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 102000053187 Glucuronidase Human genes 0.000 description 2
- 108010060309 Glucuronidase Proteins 0.000 description 2
- 201000009053 Neurodermatitis Diseases 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000001952 enzyme assay Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 201000000849 skin cancer Diseases 0.000 description 2
- PSGQCCSGKGJLRL-UHFFFAOYSA-N 4-methyl-2h-chromen-2-one Chemical group C1=CC=CC2=C1OC(=O)C=C2C PSGQCCSGKGJLRL-UHFFFAOYSA-N 0.000 description 1
- YUDPTGPSBJVHCN-DZQJYWQESA-N 4-methylumbelliferyl beta-D-galactoside Chemical compound C1=CC=2C(C)=CC(=O)OC=2C=C1O[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O YUDPTGPSBJVHCN-DZQJYWQESA-N 0.000 description 1
- 208000035985 Body Odor Diseases 0.000 description 1
- 108090000317 Chymotrypsin Proteins 0.000 description 1
- 206010012438 Dermatitis atopic Diseases 0.000 description 1
- 108090000371 Esterases Proteins 0.000 description 1
- 102000005348 Neuraminidase Human genes 0.000 description 1
- 108010006232 Neuraminidase Proteins 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 108010067372 Pancreatic elastase Proteins 0.000 description 1
- 102000016387 Pancreatic elastase Human genes 0.000 description 1
- 108700019535 Phosphoprotein Phosphatases Proteins 0.000 description 1
- 102000045595 Phosphoprotein Phosphatases Human genes 0.000 description 1
- 108090000608 Phosphoric Monoester Hydrolases Proteins 0.000 description 1
- 102000004160 Phosphoric Monoester Hydrolases Human genes 0.000 description 1
- 201000004681 Psoriasis Diseases 0.000 description 1
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 1
- 241001303601 Rosacea Species 0.000 description 1
- 206010039710 Scleroderma Diseases 0.000 description 1
- 206010039792 Seborrhoea Diseases 0.000 description 1
- 208000000453 Skin Neoplasms Diseases 0.000 description 1
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 206010040904 Skin odour abnormal Diseases 0.000 description 1
- 206010042496 Sunburn Diseases 0.000 description 1
- 108090000631 Trypsin Proteins 0.000 description 1
- 102000004142 Trypsin Human genes 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 201000008937 atopic dermatitis Diseases 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- 229960002376 chymotrypsin Drugs 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000037310 combination skin Effects 0.000 description 1
- 239000008406 cosmetic ingredient Substances 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 230000035618 desquamation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 206010021198 ichthyosis Diseases 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 206010025135 lupus erythematosus Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 201000001441 melanoma Diseases 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002493 microarray Methods 0.000 description 1
- 230000037311 normal skin Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 201000004700 rosacea Diseases 0.000 description 1
- 208000008742 seborrheic dermatitis Diseases 0.000 description 1
- 230000037307 sensitive skin Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 201000008261 skin carcinoma Diseases 0.000 description 1
- 230000037204 skin physiology Effects 0.000 description 1
- 201000004477 skin sarcoma Diseases 0.000 description 1
- 230000036555 skin type Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000002110 toxicologic effect Effects 0.000 description 1
- 231100000027 toxicology Toxicity 0.000 description 1
- 239000012588 trypsin Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/02—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms
- C12Q1/025—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving viable microorganisms for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
Definitions
- the present invention relates to a method for determining the enzymatic status of human skin in vitro, test kits for determining the enzymatic status of human skin and the use of enzymes for determining the enzymatic status of human skin, furthermore a test method for demonstrating the effectiveness of cosmetic or pharmaceutical Active substances for the treatment of human skin as well as a screening method for the identification of cosmetic or pharmaceutical active substances for the treatment of human skin and a method for the production of a cosmetic or pharmaceutical preparation for the treatment of human skin.
- the relationship between skin physiology and the enzymes on the skin surface is known. It is known, for example, that proteases are involved in desquamation of the skin, that lipases regulate the fat content of the skin and that sulfatases are related to body odor.
- the present invention is therefore based on the object of providing a way of largely reducing the enzyme status of human skin Avoiding the disadvantages of the prior art set out above.
- a method for determining the enzymatic status of human skin in vitro which is characterized in that a) an enzyme mixture is obtained from the stratum corneum of human skin, b) the enzyme mixture is added to a plurality of cavities in a segmented reaction vessel , c) provides each cavity with a sufficient amount of substrate for the enzyme to be examined in this cavity, d) determines for each cavity whether and, if necessary, how intensively the reaction of the enzyme to be examined in this cavity is taking place and from the combined information from all cavities determines the enzyme status.
- the method according to the invention enables the investigation of stratum corneum enzymes from authentic milieu, both with regard to the quality and in terms of the quantity of the enzymes.
- the implementation is easy. No special equipment is required to carry out the test, and no extraction is required.
- the different enzyme assays can and should be carried out in parallel in one test batch.
- the method according to the invention opens up a number of possible uses, for example the characterization of different skin types, e.g. the distinction of oily, dry, sensitive skin or combination skin from normal skin. An examination of pathological skin conditions is also possible (acne, neurodermatitis). It is also possible to follow the regulation of these identified differences through cosmetics in the course of a "treatment”.
- the enzyme mixture is preferably obtained in step a) by means of "tape stripping", ie by applying and tearing off an adhesive strip to or from the skin (Redoules D. et al. "Characterization and Assay of Five Enzymatic Activities in the Stratum Corneum Using Tape strippings "skin Pharmacol. Appl. Skin Physiol. 1999; 12: 182-192. ; Beisson F. et al. "Use of Tape Stripping Technique for Directly Quantifying Esterases Activities in Human Stratum Corneum” Anal. Biochem. 2001 .; 290: 179-185.) And subsequent elution.
- the eluate obtained is used in enzyme assays that take into account the typical skin enzymes (lipase, sulfatase, glucuroniadase, phosaphatase, various proteases, etc.).
- the segmented reaction vessel used in step b) of the method according to the invention is preferably a commercially available microtiter plate.
- step b) it is particularly preferred to use an analysis chip with several functional levels for electrofocused spotting, as described in DE-A-101 02 063.5-52, to which reference is hereby made in full.
- This analysis chip advantageously makes it possible to focus and immobilize samples regardless of their viscosity with the aid of electrodes at defined points on the dot matrix (arrays).
- a tension field is created by a defined time factor and a defined amount of sample solution is drawn off. Due to the electrically conductive sensor surface at the bottom of the cavity, the entire sample solution is electrically focused on one point, always of the same size.
- the existing cavity means that there are no restrictions due to cross-contamination from neighboring spots.
- the samples can be stored moist, by covering the cavities, or dry.
- the substrates to be used in step c) of the method according to the invention can be selected by the person skilled in the art depending on the enzyme to be examined to be selected. Examples are those on the Internet at http://www.appliches.de/commun/biotabellen/09Enzymsub.html (as of December 17, 2002): Particularly preferred substrates are highly sensitive substrates that are easily accessible to optical detection, for example 4-methylumbelliferyl N-acetyl - ⁇ - D-galactosaminide; 4-methylumbelliferyl- ⁇ -D-galactopyranoside; 4-methylumbelliferyl / j'-D-glucopyranoside; 4-methylumbelliferyl-? -D-glucuronide; 4-methylumbelliferyl phosphate, methylumbelliferyl palmitate,
- Methylumbelliferyl sulfate or 2 '- (Methylumbelliferyl) - ß -D-neuraminic acid Methylumbelliferyl sulfate or 2 '- (Methylumbelliferyl) - ß -D-neuraminic acid.
- inhibitors of the enzymes to be investigated are additionally used in step c) of the method according to the invention.
- Suitable inhibitors are selected, for example, from the inhibitors listed on the Internet at http://www.appliches.de/commun/biotabellen/08Enzyminhi.html (as of December 17, 2002).
- the mixture is preferably incubated at 37 ° C. and after a certain time can be buffered with a further buffer to pH 10.5 and the emitted fluorescence can be recorded with a fluorescence reader.
- the method according to the invention is suitable for determining an enzyme of the stratum corneum or several at the same time (phosphatase, lipase, sulfatase, glucuronidase, trypsin, chymotrypsin, elastase, various proteases, etc.) and thus determining the enzymatic status of the skin to be examined.
- an enzyme of the stratum corneum or several at the same time phosphatase, lipase, sulfatase, glucuronidase, trypsin, chymotrypsin, elastase, various proteases, etc.
- the method according to the invention enables the enzyme status of different skin areas of an individual or of different individuals to be compared with one another.
- the method advantageously allows normal values for a healthy enzyme status to be determined by screening a large number of skin-healthy individuals and the method is calibrated to these values.
- the enzyme status is preferably determined by means of the method according to the invention by examining the enzyme mixture obtained in step a) for the presence and optionally the intensity of the enzymatic reactions examined and assigning the enzyme mixture to healthy skin if it is has no or only slight deviations from the above-mentioned norm values, or assigns the enzyme mixture to diseased skin or skin in disturbed homeostasis if it shows significant deviations from the above-mentioned norm values.
- the method according to the invention can also be calibrated to normal values of a partially healthy individual.
- the normal values are then obtained by examining the healthy skin areas. This eliminates inter-individual differences in enzyme status.
- the enzyme status is preferably determined using the method according to the invention on the basis of about 1 to 50, in particular about 4 to 8, different enzymes.
- the present invention further provides a test kit for determining the enzymatic status of human skin in vitro, comprising means for carrying out the method according to the invention for determining the enzymatic status of human skin.
- the test kit according to the invention can comprise, for example, some adhesive strips, a microtiter plate, buffers and fluorescence-labeled, preferably highly sensitive, enzyme substrates.
- Another object of the present invention is a protein chip for determination to determine the enzymatic status of human skin in vitro, comprising i. a firm, d. H. rigid or flexible beams and ii. on this immobilized enzymes which were obtained from the stratum corneum as described above by means of step a) of the method according to the invention.
- a protein chip is a miniaturized functional element with proteins immobilized on a surface that can serve as specific interaction partners.
- protein chips have a 2D base area for coating with biologically or biochemically functional materials.
- the base surfaces can also be formed, for example, by walls of one or more capillaries or by channels.
- the analysis chips mentioned in DE-A-100 28 257.1-52 and in DE-A-101 02 063.5-52 are particularly preferred for the production of small (up to about 500 probes) protein chips.
- the protein chip according to the invention preferably comprises 1 to approximately 500, preferably approximately 1 to approximately 100, particularly preferably approximately 1 to approximately 50 and very particularly preferably approximately 4 to approximately 8 different probes.
- the probes which differ from one another, can each be present in duplicate on the chip.
- Another object of the present invention is the use of enzymes obtained from the stratum corneum as described above by means of step a) of the method according to the invention for determining the enzymatic status of human skin in vitro.
- Another object of the present invention is a test method for proving the effectiveness of cosmetic or pharmaceutical active substances against diseases or impairments of the homeostasis of human skin in vitro, characterized in that a) the enzymatic status of human skin is determined by a method according to the invention for determining the enzymatic status human skin, or by means of a test kit according to the invention for determining the enzymatic status of human skin, or determined by means of a protein chip according to the invention, b) applying an active substance against diseases or impairments of the homeostasis of human skin to the skin one or more times, c) the skin status again human skin by a method according to the invention for determining the enzymatic status of human skin, or by means of a test kit according to the invention for determining the enzymatic status of human skin, or by means of a protein chip according to the invention, and d) the effectiveness of the active ingredient is determined by comparing the results from a) and c).
- Another object of the present invention is a test kit for detecting the effectiveness of cosmetic or pharmaceutical active substances against diseases or impairments of the homeostasis of human skin, comprising means for carrying out the test method according to the invention.
- the present invention furthermore relates to the use of enzymes which were obtained from the stratum corneum as described above by means of step a) of the method according to the invention, for the detection of Efficacy of cosmetic or pharmaceutical active substances against diseases or impairments of the homeostasis of human skin, in particular against neurodermatitis, sunburn, psoriasis, scleroderma, ichthyosis, atopic dermatitis, acne, seborrhea, lupus erythematosus, rosacea, melanoma, basalioma, skin carcinoma, skin cancer, skin sarcoma , Oily / dry facial skin ..
- Another object of the present invention is a screening method for the identification of cosmetic or pharmaceutical active substances against diseases or impairments of the homeostasis of human skin in vitro, which is characterized in that a) the enzymatic status of human skin by an inventive method for determining the enzymatic status of human skin, or determined using a test kit according to the invention for determining the enzymatic status of human skin, or determined using a protein chip according to the invention, b) applying a potential active substance against diseases or impairments of the homeostasis of human skin to the skin one or more times, c) the enzymatic status of human skin by a method according to the invention for determining the enzymatic status of human skin, or by means of a test kit according to the invention for determining the enzymatic status of human skin, or by means of a Pr oteinchips determined, and d) active ingredients determined by comparing the results from a) and c).
- Another object of the present invention is the use of enzymes obtained from the stratum corneum as described above by means of step a) of the method according to the invention for the identification of cosmetic or pharmaceutical active substances against diseases or impairments of the homeostasis of human skin.
- Another object of the present invention is a method for producing a cosmetic or pharmaceutical preparation against diseases or impairments of the homeostasis of human skin, characterized in that a) active ingredients with the aid of the screening method according to the invention, or the use for the identification of cosmetic or active pharmaceutical ingredients against diseases or impairments of the homeostasis of human skin and b) active ingredients found to be effective mixed with cosmetically and pharmacologically suitable and compatible carriers.
- Example 1 Extraction of the enzymes from the stratum corneum
- 300 ⁇ l of the enzyme eluate obtained according to the description in Example 1 are added to 200 ⁇ l of a 10 mM methylumbelliferyl palmitate (from Bachern) in 500 ⁇ l 0.1 M potassium phosphate buffer, pH 8.0 and incubated at 37 ° C.
- 10 ⁇ l are taken from the batch, added to 190 ⁇ l 0.2 M NaHC0 3 solution pH 10.5, excited in the fluorescence reader at 360 nm and the emission measured at 460 nm.
- 300 ⁇ l of the enzyme eluate obtained according to the description in Example 1 are added to 200 ⁇ l of a 10 mM methylumbelliferyl- ⁇ -D-glucuronide (from Sigma) in 500 ⁇ l of 0.1 M potassium phosphate buffer, pH 8.0 and incubated at 37 ° C.
- 10 ⁇ l are taken from the batch, added to 190 ⁇ l 0.2 M NaHC0 3 solution pH 10.5, excited in the fluorescence reader at 360 nm and the emission measured at 460 nm.
- 300 ⁇ l of the enzyme eluate obtained according to the description in Example 1 become 200 ⁇ l of a 10 mM methylumbelliferyl phosphate (Sigma) solution in 500 ⁇ l 0.1 M potassium phosphate buffer, pH 8.0 added and incubated at 37 ° C.
- 10 ⁇ l are taken from the batch, added to 190 ⁇ l 0.2 M NaHC0 3 solution pH 10.5, excited in the fluorescence reader at 360 nm and the emission measured at 460 nm.
- 300 ⁇ l of the enzyme eluate obtained according to the description in Example 1 are added to 200 ⁇ l of a 10 mM methylumbelliferyl sulfate (from Sigma) in 500 ⁇ l 0.1 M potassium phosphate buffer, pH 8.0 and incubated at 37 ° C.
- 10 ⁇ l are taken from the batch, added to 190 ⁇ l 0.2 M NaHC0 3 solution pH 10.5, excited in the fluorescence reader at 360 nm and the emission measured at 460 nm.
- 300 ⁇ l of the enzyme eluate obtained according to the description in Example 1 are added to 200 ⁇ l of a 1 mM 2 ′ - (methylumbelliferyl) -DD-neuraminic acid (from Sigma) in 500 ⁇ l of 0.1 M potassium phosphate buffer, pH 8.0 and incubated at 37 ° C. , To measure the substrate turnover, 10 ⁇ l are taken from the batch, added to 190 ⁇ l 0.2 M NaHC0 3 solution pH 10.5, excited in the fluorescence reader at 360 nm and the emission measured at 460 nm.
- Example 2 55 ⁇ l of the enzyme eluate obtained according to the description in Example 1 are added to 45 ⁇ l of a multifluorophore-casein solution (50 ⁇ g / ml). The fluorescence emission is monitored over 120 min (Ex / Em 485/520 nm).
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Immunology (AREA)
- Toxicology (AREA)
- Biotechnology (AREA)
- Analytical Chemistry (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Biophysics (AREA)
- Medicinal Chemistry (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002160927 DE10260927A1 (de) | 2002-12-20 | 2002-12-20 | Verfahren zur Bestimmung des enzymatischen Status humaner Haut in vitro |
| DE10260927 | 2002-12-20 | ||
| PCT/EP2003/013566 WO2004058991A1 (de) | 2002-12-20 | 2003-12-02 | Verfahren zur bestimmung des enzymatischen status humaner haut in vitro |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1573042A1 true EP1573042A1 (de) | 2005-09-14 |
Family
ID=32519369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03782279A Withdrawn EP1573042A1 (de) | 2002-12-20 | 2003-12-02 | Verfahren zur bestimmung des enzymatischen status humaner haut in vitro |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1573042A1 (de) |
| AU (1) | AU2003289938A1 (de) |
| DE (1) | DE10260927A1 (de) |
| WO (1) | WO2004058991A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015226493A (ja) * | 2014-05-30 | 2015-12-17 | ポーラ化成工業株式会社 | 目元の肌状態の推定方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD227725A1 (de) * | 1984-09-11 | 1985-09-25 | Univ Halle Wittenberg | Verfahren zur kolorimetrischen bestimmung von elastase |
| DE10102063A1 (de) * | 2001-01-17 | 2002-07-25 | Alpha Technology Ges Fuer Ange | Analysechip mit mehreren funktionalen Ebenen für elektrofokussiertes Spotten |
-
2002
- 2002-12-20 DE DE2002160927 patent/DE10260927A1/de not_active Withdrawn
-
2003
- 2003-12-02 AU AU2003289938A patent/AU2003289938A1/en not_active Abandoned
- 2003-12-02 WO PCT/EP2003/013566 patent/WO2004058991A1/de not_active Ceased
- 2003-12-02 EP EP03782279A patent/EP1573042A1/de not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004058991A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004058991A1 (de) | 2004-07-15 |
| AU2003289938A1 (en) | 2004-07-22 |
| DE10260927A1 (de) | 2004-07-15 |
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