EP1165036A1 - Composition cosmetique comprenant un extrait lipidique de skeletonema - Google Patents
Composition cosmetique comprenant un extrait lipidique de skeletonemaInfo
- Publication number
- EP1165036A1 EP1165036A1 EP00915266A EP00915266A EP1165036A1 EP 1165036 A1 EP1165036 A1 EP 1165036A1 EP 00915266 A EP00915266 A EP 00915266A EP 00915266 A EP00915266 A EP 00915266A EP 1165036 A1 EP1165036 A1 EP 1165036A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- skin
- composition according
- intercellular communication
- alga
- extract
- 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- Withdrawn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
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/08—Anti-ageing preparations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/06—Preparations for care of the skin for countering cellulitis
Definitions
- the invention essentially relates to a cosmetic composition
- a cosmetic composition comprising at least one substance promoting intercellular communication of skin cells, in particular keratinocytes, fibroblasts, and pre-adipocytes of the skin, in particular promoting the formation of connexin, use and cosmetic treatment process.
- the search for means to fight against the aging of man mobilizes a large number of researchers today. This is in particular the case in the field of cosmetics where it is sought to combat, or at least slow down, the appearance of the aesthetic and physiological effects of skin aging, such as wrinkles, loss of elasticity of the skin. skin, color, etc.
- the aging of the human species is characterized by many disorders that affect living tissue.
- Tissue homeostasis important for the skin, is modified during aging.
- Communicating junctions participate in the regulation of cell homeostasis, their role in maintaining the physiological balance of the skin is therefore important.
- the inventors have highlighted an effect of aging on the functional capacity of cells to communicate with each other, in particular via communicating junctions (JC) or "gap junctions" (GJ), as well as an effect of aging on amount of connexin 43 present in cells. They have indeed demonstrated that the functional capacity of cells to communicate with each other, in particular via communicating junctions (JC) decreases with age.
- JC Communicating junctions
- GJ Gap Junctions
- Connexons of one cell align end to end with those of the neighboring cell, thereby establishing a junctional channel (Goodenough, D A., Goher. JA, & Paul, DL (1996) Connexms, Connexons, and cellular communication. Annual review of biochimistry, 65, 475-502)
- These communicating junctions (JC) allow the maintenance of cellular and tissue homeostasis.
- Connexins are part of a family of proteins, each with tissue specificities.
- Connexin 43 is the major protein of keratinocytes (Salomon, D., Saurat, J.-H., & P., M (1988). Cell-to-cell communication within intact human skin.
- JC are present in all the layers of the epidermis with the exception of the stratum corneum.
- the molecules acting on the functioning of cells can do so, either by penetrating into the cells, or without penetrating into the cells, but by attaching themselves to receptors present on the cellular plasma membrane, triggering thus a senna of reactions which will lead to the release of small molecules called "second messengers" in the cell cytoplasm.
- second small messengers such as for example AMPc (3 ', 5'-adenosine cyclic monophosphate)
- the inventors have shown that, surprisingly, the use of boldine, or independently, the use of lipid extracts of the Skeletonema costatum alga makes it possible to restore intercellular communication, in particular through JC and allows also increase the level of connexin 43 present in skin cells, in particular in keratinocytes, fibroblasts and pre-adipocytes.
- the main object of the present invention is to solve the new technical problem consisting in providing a new solution for improving the effectiveness of cosmetic compositions, in particular for combating, or at least slowing down, the appearance of aesthetic effects and physiological effects of skin aging, such as wrinkles, loss of skin elasticity, color, etc.
- this technical problem has been solved for the first time, in a surprising and not obvious manner, by the discovery that a substance which promotes intercellular communication of keratinocytes, fibroblasts and pre-adipocytes of the skin allows to provide a cosmetic composition having improved properties, in particular to combat, or at least slow down, the appearance of the aesthetic and physiological effects of skin aging, such as wrinkles, loss of elasticity of the skin, color, etc. .
- the present invention has also made it possible to discover, unexpectedly and not evidently, that a substance promoting the formation of connexin, in particular connexin 43, makes it possible to prepare a cosmetic composition with increased effectiveness, in particular for combating, or at least slow down, the aforementioned appearance of the aesthetic and physiological effects of skin aging.
- a lipid extract of the Skeletonema alga in particular of the Skeletonema alga costatum, in particular a total lipid extract of said alga, promotes intercellular communication through the communicating junctions of skin cells, in particular keratinocytes, fibroblasts, and pre-adipocytes of the skin, and thus makes it possible to prepare a cosmetic composition with increased effectiveness, in particular for combating or slowing down the appearance of the aesthetic and physiological effects of skin aging, or for combating adipose overloads.
- the present invention relates to a cosmetic composition, characterized in that it comprises, as active ingredient, at least one substance which favors the intercellular communication of skin cells, in particular keratinocytes , fibroblasts, and skin preadipocytes.
- the composition is characterized in that said substance promoting intercellular communication, promotes mtercellular communication through the communicating junctions of skin cells, in particular keratinocytes, fibroblasts, and skin pre-adipocytes.
- the composition is characterized in that the said substance promoting intercellular communication faves the formation of connexin, in particular connexin 43.
- the aforementioned composition is characterized in that said substance promoting cell communication comprises at least one lipid extract of the Skeletonema alga, in particular of the Skeletonema costatum alga, in particular a total lipid extract of said alga.
- Skeletonema alga in particular Skeletonema costatum (named SKC in the remainder of the document), is a well known unicellular alga, from the phylum of Chlorophytes, of the branch of Chrysophycophytes, from the class of Diatomophycees and from the 'order of Power Plants.
- Diatomophycees are very widespread in fresh water, manna or brackish. The life of species of this class can be planktonic or benthic. The protoplasm is enclosed in a siliceous frustule.
- Skeletonema costatum (SKC) is a cosmopolitan species, most often manna, which is frequently found associated with phytoplanktonic bloom in coastal waters.
- this lipid extract is characterized in that it is an extract obtained by extraction of the Skeletonema alga with an alcoholic solvent chosen from the group consisting of isopropanol, ethanol, and methanol.
- the extraction is carried out under reflux.
- the alga is frozen before being extracted with the alcoholic solvent, preferably freezing being performed at a temperature between - 40 ° C and - 20 ° C approximately and for a period preferably between 1 and 7 days approximately.
- the frozen algae is immersed directly in the heated alcoholic solvent.
- Thermal shock makes it possible to facilitate the decantation of silica (from the skeleton of algae cells)
- the extract of the abovementioned alga is obtained after the succession of the following steps a) the alcoholic solvent is alcahnized up to a pH of between 10 and 14, preferably at a pH equal to 13, for example with an aqueous solution of sodium hydroxide or with an aqueous solution of potassium hydroxide, b) the insolubles are eliminated from the hydroalcoholic phase, c) distilled water is added to the hydro-alcoholic phase, d) the solution obtained undergoes a liquid-liquid extraction with an apolar solvent immiscible with the hydro-alcoholic phase, such as for example heptane, hexane or cyclohexane, e) the phase containing the apolar solvent is eliminated, f) the hydroalcoholic phase recovered after elimination of the phase containing the apolar solvent, is acidified to a pH between 1 and 3, preferably at a pH equal to 2, e.g.
- the solution obtained after acidification undergoes a liquid-liquid extraction with an apolar solvent immiscible with the hydro-alcoholic phase, such as for example l heptane, hexane or cyclohexane, h) the hydro-alcoholic phase is eliminated, î) the phase containing the non-polar solvent recovered after elimination of the hydro-alcoholic phase undergoes evaporation in order to obtain an oil free of non-polar solvent , this oil being the desired extract.
- an apolar solvent immiscible with the hydro-alcoholic phase such as for example l heptane, hexane or cyclohexane
- the above-mentioned extract is obtained by extraction with supercritical CO 2 .
- a maceration of the alga is carried out in the alcoholic solvent at room temperature and preferably for a period of between 5 minutes and 80 minutes approximately, and preferably again, for a period of between about 20 minutes and 40 minutes.
- the amount of alcoholic solvent used is between 0J liter and about 20 liters of solvent, preferably between 2 liters and about 10 liters of solvent, per 100 g of algae, expressed by weight dry seaweed.
- the extraction can be carried out under an inert atmosphere, preferably under an atmosphere saturated with nitrogen. This makes it possible in particular to avoid a pronounced oxidative degradation of the active molecules
- the packaging of this lipid extract is preferably carried out under an inert gas such as nitrogen in order to protect the active molecules.
- the aforementioned composition is characterized in that it comprises from 0.01% to 10% approximately, and in particular from 0.1% to 3% approximately by weight of said lipid extract of the seaweed
- Skeletonema in particular of the Skeletonema costatum seaweed relative to the total weight of the final composition.
- the present invention also relates to the use of at least one substance promoting the intercellular communication of keratinocytes, fibroblasts, and pre-adipocytes of the skin, as cosmetic agent, possibly in the presence of a cosmetically vehicle acceptable.
- said substance promoting mtercellular communication promotes intercellular communication through the communicating junctions of keratinocytes, fibroblasts, and pre-adipocytes of the skin.
- the substance promoting the cellular communication favese the formation of connexin, in particular connexin 43.
- the substance comprises at least one lipid extract of Skeletonema seaweed, especially seaweed Skeletonema costatum, in particular a total lipid extract of said alga, in particular as previously defined.
- this abovementioned extract is an extract obtained by liquid-liquid extraction between an alkalinized and then acidified alcohol and an apolar solvent immiscible with the hydro-alcoholic phase, such as for example heptane, hexane or cyclohexane.
- the substance promoting intercellular communication of the skin cells is boldine, a product which corresponds to the formula below:
- compositions of the invention which contain said boldine contain about 0.001 to 10%, advantageously 0.01 to 1%, by weight.
- the present invention also covers a process for promoting and / or increasing the activity of a cosmetic agent acting directly in the cell or through second intracellular messengers, characterized in that it comprises the simultaneous or preliminary application to that of said cosmetic agent, on the areas of the skin concerned of a person in need thereof, of an effective amount of at least one substance promoting intercellular communication, in particular a substance promoting intercellular communication such than previously defined.
- the present invention also covers a method of anti-aging cosmetic treatment of the skin, characterized in that it comprises the application to the areas of the skin concerned of a person in need thereof, of a effective amount of at least one substance promoting intercellular communication, to obtain an anti-aging effect on said areas of the skin, in particular for improving skin firmness, improving the elasticity of the skin, delaying the appearance of ndes or reducing their depth, in particular a substance promoting cell communication as defined above.
- FIG. 1 shows the modulation curve of intercellular communication as a function of the age of the donors. It is obtained from keratinocytes isolated from donors of different ages by a method known as scratch-loading. The curve is expressed as a function of the ratio of the fluorescent surface to the total surface, on the ordinate, and as a function of the donor age, in years, on the abscissa. "R” is the correlation coefficient here equal to 0.76.
- the measurements obtained with young donors are represented by solid squares with the standard deviation and the measurements noted with white circles were obtained with elderly donors, also with the standard deviation,
- FIG. 2 also represents a modulation curve of intercellular communication as a function of the age of the donors, obtained by a micro-injection method, but this time expressed as a function of the number of cells marked with keratinocytes, on the ordinate, and as a function of the age expressed in years, on the abscissa, r still represents the correlation coefficient here equal to 0.91 and the measurements obtained with young donors being noted with black squares, with their standard deviation, while the measurements obtained with elderly donors are noted with white circles, with their standard deviation,
- FIG. 3 represents the evolution of the rate of connexin 43 measured in keratinocytes of donors of different ages, obtained by flow cytometry, expressed as a function of the percentage of labeling on the ordinate and as a function of the age of the donors (in years), on the abscissa, with a correlation coefficient r equal here to 0.82.
- the measurements obtained with young donors are noted with black squares with their standard deviation, and the measurements obtained with elderly donors are noted with white circles, with their standard deviation,
- FIG. 4 represents the results of modulation of intercellular communication in normal human keratinocytes, noted KHN, in different donors treated or not with a lipid extract of l alga Skeletonema costatum, abbreviated SKC, represented in the form of histograms, expressed according to relative unit of diffusion on the ordinate, the white stick being obtained with control KHNs and the gnsé stick being obtained with KHNs treated with a lipid extract of the Skeletonema costatum alga in a proportion of 2.5 ⁇ g / ml / 24h, in vitro,
- FIG. 5 represents the measurement by the micro-injection technique, of the modulation of intercellular communication in normal human keratinocytes (abbreviated as KH ⁇ ) in different donors treated or not with a lipid extract of the Skeletonema costatum alga, abbreviated SKC, with on the ordinate the number of labeled cells, the results with the control KH ⁇ , untreated, being shown with a white stick called "control”, and the KH ⁇ treated with a lipid extract of the alga Skeletonema costatum or SKC at the dose of 2.5 ⁇ g / ml / 24h being represented by a black stick, known as treated,
- KH ⁇ normal human keratinocytes
- FIG. 6 also shows a histogram, obtained from results measured in flow cytometry, of the modulation of the amount of connexin 43 relative to their respective controls of donors of different ages treated with the lipid extract of the alga Skeletonema costatum, abbreviated to SKC, at a dose of 2.5 ⁇ g / ml / 24h, with the percentage increase on the ordinate and the age of the donors, in years, on the abscissa.
- Example I Demonstration of the decrease in the functionality of intercellular communication by Communicating Junctions (CIJC) with age and the decrease in the amount of connexin 43 with age.
- CIJC Communicating Junctions
- Normal human keratinocyte (KH ⁇ ) cultures are produced from skin samples.
- the sample is initially taken 4 times in PB S (Phosphate Buffered Saline - Sigma) (50 ml tubes). It is then decontaminated by soaking it in two successive baths of 70% ethanol for 30 seconds. When the sample is decontaminated, it is placed in a petri dish containing PBS. Strips 1 mm wide are then cut, taking care to eliminate a maximum of adipose tissue and dermis. The strips are placed progressively in a petn box containing PBS.
- PB S Phosphate Buffered Saline - Sigma
- the strips are placed for 4 h at 37 ° C. in a 0.25% trypsin solution in PBS
- the dermis of the epidermis is then dissociated by scraping the strips with a scalpel, the epidermal cells obtained are suspended in a tube containing DMEM medium (Dulbecco Modified Eagle Medmm - Gibco) + 10% of SVF (Fetal Calf Serum - Eurobio)
- DMEM medium Dulbecco Modified Eagle Medmm - Gibco
- SVF Fetal Calf Serum - Eurobio
- the surface part consisting of cells of the stratum corneum is removed and filtered through a sieve. The filtered part is centrifuged for 5 minutes at 176 g. The pellet is taken up with KHN-D medium (DMEM + 10% FCS + hydrocortisone 0.4 ⁇ g / ml + EGF 10 ng / ml + cholenic toxin 10 -9 M).
- the cells are counted and then seeded at 15 ⁇ 10 6 cells / bottle.
- the medium After 24 hours of culture, the medium is changed, the cells are rinsed with PBS and the culture medium K-SFM (Gibco) is used for the rest of the culture.
- the keratinocytes are transplanted in a completely conventional manner, but it is necessary to transplant them at 60-70% of the confluence so that they keep their capacity to proliferate.
- the maintenance medium is eliminated and the cell carpet is rinsed with PBS.
- the cells are placed in the presence of 3 ml of a trypsin-EDTA solution, then when the cells detach, the trypsin is inhibited by medium with 10% FCS (Eurobio).
- FCS Eurobio
- the cell suspension is homogenized, recovered and then centrifuged at 20 g for 5 minutes at room temperature. The pellet thus obtained is repns with medium alone.
- the seeding is done as before at 10 6 cells / 75 cm 2 in ventilated bottles and stored under the conditions mentioned above.
- the confluence is obtained after ten days and the cells can be amplified for 6 to 7 passages.
- the confluence cells are rinsed with PBS (Sigma) before the addition of the dye.
- 2 ml of 0.05% Lucifer Yellow (Sigma) diluted in PBS are deposited on the cells and the "scratch" is er at room temperature.
- Six '"scratches” are made in 60 mm boxes.
- the cells are left in the presence of the dye for 5 minutes, then it is removed and recovered.
- the cells are then rinsed with PBS, in order to eliminate the excess fluorescence. They are fixed using 3% Paraformaldehyde (PFA) for 10 minutes.
- PFA Paraformaldehyde
- the boxes are observed using an inverted fluorescence microscope equipped with a camera which allows the acquisition of images.
- Six or eight photos are taken for each box and are then analyzed with image analysis software (Perfectimage, Iconix).
- image analysis software Perfectimage, Iconix
- the computer calculates and gives the ratio of the surfaces: Fluorescent surface / Total surface. The higher the ratio, the greater the capacity of the cells to communicate with each other.
- the preparation of the cells is similar to that used by the scratch-loading technique or in English "scrape-loading"
- Lucifer Yellow (10% in 0.33 M LiCl) is injected directly into a cell, only using a capillary connected to a micromanipulator (Leitz).
- the injection is controlled by a m j ector automatic (Tranjector 5246, Eppendorf), and lasts 1 second with an intensity of 10335 HPa.
- the injections are made under an inverted microscope (20X) in phase contrast (Leica microscope, Fluovert FU) Twenty injections are carried out in a 60 mm petn dish After fixing the cells with 3% paraformaldehyde, the cells are rinsed with PBS The observation and the counting of the number of labeled cells are then carried out
- I 1 4- Flow rate When the confluence is reached, the culture medium is removed and the cells are rinsed 2 times with PBS buffer. Then, they are trypsinized using a mixture of 0% trypsin and 0.02% EDTA. The trypsin inhibition is carried out with culture medium adding 10% of FCS. A count of the number of cells to be had, in order to adjust this to 10 cells per tube. The cell suspension is centrifuged at 176 g for 5 minutes and the pellet is taken up in 100 ml of PBS. Cells are fixed with 3% PFA for 25 minutes at 4 ° C. To remove the PFA, the cells are again centrifuged at 176 g for 5 minutes and rinsed twice in PBS.
- the buffer in which the antibodies are prepared, consists of PBS, 1% FCS and 0.2% saponin (Sigma), a detergent which induces microporation of the membrane, but which does not damage the cell. This detergent is used to keep intact and to quantify the intracytoplasmic connexin 43 but also transmembrane (Personal communication, R. Mouawad, Hôpital Salgestnere - Pans)
- the primary antibody used is the anti-connexin 43 (Zymed, monoclonal AC made in the souns).
- the concentration of the primary antibody should be 1.3 ⁇ g / ml (l / 750 th ).
- the incubation is 45 minutes at 4 ° C.
- the cells are centrifuged and incubated with the buffer used for the preparation of the antibodies (PBS, saponin and SVF). They are then placed in the presence of the secondary anti-sun antibody coupled to fluorescein. at the dilution of l / 50 th (Jackson Immunotech). After incubation with the second antibody, the cells are centrifuged and nnc dires, then repnses in 1 ml of buffer (PBS, saponin, SVF)
- the fluorescence intensity is measured in the KHNs treated as above and in KHNs which have not been put in the presence of the secondary anti-sun antibody coupled to fluorescein, with a flow cytometer (Epies profile II from COULTRONIC), the measurements are processed and compared by software (Phoenix flow system soft from COULTRONIC), which gives us a value measured in an arbitrary unit given by the machine, which we call: marking rate of the Connexin 43 in KHN, which reflects the amount of Connexin 43 per KHN (on average).
- Connexin 43 labeling rate in KHN measured in keratinocytes of donors of different ages.
- Table III and FIG. 3 show a decrease in the rate of connexin 43 as a function of age, the amount of connexin 43 appearing to be inversely proportional to the age of the donors.
- the correlation coefficient is 0.82.
- the inventors have therefore shown the advantage of using substances which promote intercellular communication, in particular through JC, to combat the signs of skin aging, in particular to slow their appearance. They have therefore developed a new way to fight against skin aging, in particular against wrinkles and loss of elasticity of the skin.
- Example II Obtaining lipid extracts from the Skeletonema costatum alga.
- the amount of solvent used is 10 liters of API for 1 liter of water contained in the biomass.
- the 250 kg of biomass represent an amount of dry matter of 75 kg and 175 kg of water.
- the amount of API engaged here is
- biomass + IPA The whole (biomass + IPA) is brought to reflux for half an hour with stirring at approximately 80 ° C., before being cooled to around 50 ° C.
- the extract is transferred to a GUEDU type filter in order to carry out the spent biomass / lipid extract separation under IPA.
- the yield relative to the dry weight of this first step is 28% in crude oil.
- the lipid extract is taken up in cold 1TPA at the rate of 10 kg of solvent per 1 kg of oil. Agitation is continued for 20 minutes. The juice is then filtered (this eliminates the sticky residual mud).
- the bleaching and deodorization treatment is carried out in two batches in an 80 liter schott reactor and lasts 30 minutes at room temperature.
- the amount of zeolite (ABSENT 2000, supplier UOP) added is 0.94 kg and that of activated carbon (CXV, supplier CECA) is 1.6 kg.
- the carbon to zeolite ratio is 1.7.
- the zeolite and the charcoal are then removed by filtration on paper.
- the yield relative to the dry weight of this second step is 37%.
- the overall oil yield for the whole process is 10% relative to the dry weight of biomass Antioxidants (DL ⁇ -tocopherol at 0.05% final by weight and ascorbyl palmitate at 0.05 % final by weight) are incorporated by a solution
- the extraction begins with a dispersion of 49.8 kg of frozen plant biomass at 29% by dry mass in 539 kg of ethanol at 96%, alkalized with 9 kg of aqueous sodium solution at 30.5% After maceration of 30 minutes at 40 ° C under reflux and under a nitrogen atmosphere, the whole is cooled to 18 ° C. The insolubles are then separated by wringing under nitrogen and are eliminated.
- the 756 kg of solution relating to the above-mentioned hypophase are acidified by adding 2.8 kg of sulfuric acid to obtain a pH of 2.2. The whole is stirred for 10 minutes under nitrogen and then faces 158 kg of heptane. The free fatty acids are extracted from the 147 kg constituting the first heptanic epiphase of this new liquid / liquid partition. The operation is repeated five more times to recover a total of 697 kg of heptanic phase. This phase evaporated to dryness on a rotary evaporator and then by molecular distillation provides the active extract, ie an amount representing 1J kg of oil. The oil produced is liquid, homogeneous and has a dark yellow color.
- This oil will be named below: the lipid extract E2 from SKC.
- Example III Evaluation of the Effect of a Lipid Extract from the SKC Alga on Intercellular Communication by Communicating Junctions (CIJC) and the rate of Connexin 43 on KHN of elderly donors.
- the lipid extract of the SKC alga used in this example is the lipid extract E2 of SKC obtained according to the ethanol extraction process described above.
- Example I Normal Human Keratinocytes obtained according to the protocol described in Example I (1.1.1 - Culture of Normal Human Keratinocytes). Unlike the controls, the KHNs treated with the lipid extract El or E2 of SKC (at the time when the culture is in confluence) are brought into contact with an amount "x" of said extract expressed in ⁇ g per milliliter of culture and for 24 hours (x ⁇ g / ml / 24 hours) before undergoing evaluations carried out with the Scratch-Loading, Micro-injections or Flow Cytometry techniques, according to the protocols described in Example I (respectively 1.1.2, 1.1.3, 1.1.4).
- R is the ratio of the fluorescent surface to the total surface.
- the lipid extracts of SKC therefore induce a restoration of the CIJC of the cells of elderly donors approximately at the level of the CIJC of the cells of young donors.
- SKC lipid extracts increase the amount of connexin 43.
- the inventors have therefore developed a new means for combating skin aging, in particular against wrinkles and loss of elasticity of the skin.
- results obtained above show the advantage of using lipid extracts of the Skeletonema costatum alga in cosmetic compositions to promote and / or increase the activity of other cosmetic agents acting directly in the cell or via second intracellular messengers, and present or not, in the same cosmetic composition as the lipid extracts of SKC.
- the concentrations used are: 12.5, 25, 50, 100 and 200 mM.
- the incubations are 24 hours in the culture medium.
- the table below summarizes the measured diffusion surface values.
- Example VI Emulsion-gel for the face, anti-wrinkle
- Example VIII Emulsion-gel for the face, anti-wrinkle
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- Health & Medical Sciences (AREA)
- Dermatology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Gerontology & Geriatric Medicine (AREA)
- Cosmetics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9904165 | 1999-04-02 | ||
FR9904165A FR2791568B1 (fr) | 1999-04-02 | 1999-04-02 | Composition cosmetique comprenant au moins une subtance favorisant la formation de connexine, utilisation et procede de traitement cosmetique |
PCT/FR2000/000818 WO2000059466A1 (fr) | 1999-04-02 | 2000-03-31 | Composition cosmetique comprenant un extrait lipidique de skeletonema |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1165036A1 true EP1165036A1 (fr) | 2002-01-02 |
Family
ID=9543971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00915266A Withdrawn EP1165036A1 (fr) | 1999-04-02 | 2000-03-31 | Composition cosmetique comprenant un extrait lipidique de skeletonema |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1165036A1 (fr) |
JP (1) | JP2002541084A (fr) |
FR (1) | FR2791568B1 (fr) |
WO (1) | WO2000059466A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2820978B1 (fr) * | 2001-02-21 | 2004-02-13 | Sederma Sa | Nouvelles compositions cosmetiques amincissantes contenant de la boldine |
FR2843963B1 (fr) * | 2002-08-30 | 2004-10-22 | Sederma Sa | Nouvelles molecules derivees de la noraporphine |
JP2007039394A (ja) * | 2005-08-04 | 2007-02-15 | Nippon Menaade Keshohin Kk | 老化予防改善皮膚外用剤 |
US8992238B2 (en) | 2010-07-12 | 2015-03-31 | Ferno-Washington, Inc. | Mounting system having a mounting plate with mounting studs and electrical contacts |
WO2013123180A1 (fr) | 2012-02-14 | 2013-08-22 | Ferno-Washington, Inc. | Fixation rapide pour antenne et leurs procédés d'utilisation |
US9944217B2 (en) | 2013-02-11 | 2018-04-17 | Ferno-Washington, Inc. | Equipment mounting system |
FR3109086A1 (fr) * | 2020-04-14 | 2021-10-15 | Ifremer | utilisation d’un extrait polaire de Skeletonema dans une thérapie photodynamique |
FR3120523B1 (fr) * | 2021-03-11 | 2024-03-15 | Vega | Procédé d’incorporation d’eaux mères de marais salants dans des compositions cosmétiques, et compositions cosmétiques ainsi préparées |
FR3115458B1 (fr) | 2021-07-23 | 2023-06-30 | Lvmh Rech | Utilisation d’un extrait lipidique de l'algue Skeletonema pour favoriser et/ou stimuler la réparation de la peau |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6013709A (ja) * | 1983-07-01 | 1985-01-24 | Nippon Carbide Ind Co Ltd | 新規な化粧品添加物 |
FR2647342B1 (fr) * | 1989-05-23 | 1994-05-27 | Sanofi Sa | Composition cosmetique s'opposant au vieillissement de la peau |
FR2657012B1 (fr) * | 1990-01-17 | 1992-05-15 | Secma | Utilisation d'extraits d'algues microscopiques pour la preparation de compositions pharmaceutiques, cosmetiques, alimentaires ou a usage agricole. |
FR2683720B1 (fr) * | 1991-11-15 | 1994-08-19 | Jouvance Daniel | Composition a usage cosmetique comportant des grains d'une substance gelefiee. |
FR2719473B1 (fr) * | 1994-05-04 | 1996-06-21 | Rocher Yves Biolog Vegetale | Procédé pour accélérer le renouvellement cellulaire de la peau et compositions cosmétiques pour sa mise en Óoeuvre. |
FR2782921B1 (fr) * | 1998-09-09 | 2002-09-20 | Dior Christian Parfums | Extrait lipidique de l'algue skeletonema, procede de preparation et utilisation dans des domaines cosmetique et pharmaceutique, notamment dermatologique |
FR2784027B1 (fr) * | 1998-10-05 | 2000-12-08 | Serobiologiques Lab Sa | Utilisation d'un extrait de boldo dans un produit cosmetique ou dermatologique et produit comportant un tel extrait |
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1999
- 1999-04-02 FR FR9904165A patent/FR2791568B1/fr not_active Expired - Fee Related
-
2000
- 2000-03-31 EP EP00915266A patent/EP1165036A1/fr not_active Withdrawn
- 2000-03-31 WO PCT/FR2000/000818 patent/WO2000059466A1/fr not_active Application Discontinuation
- 2000-03-31 JP JP2000609030A patent/JP2002541084A/ja active Pending
Non-Patent Citations (1)
Title |
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See references of WO0059466A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2791568A1 (fr) | 2000-10-06 |
WO2000059466A1 (fr) | 2000-10-12 |
FR2791568B1 (fr) | 2004-04-02 |
JP2002541084A (ja) | 2002-12-03 |
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