WO2023111440A1 - Composition et application notamment cosmétique - Google Patents
Composition et application notamment cosmétique Download PDFInfo
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- WO2023111440A1 WO2023111440A1 PCT/FR2022/052323 FR2022052323W WO2023111440A1 WO 2023111440 A1 WO2023111440 A1 WO 2023111440A1 FR 2022052323 W FR2022052323 W FR 2022052323W WO 2023111440 A1 WO2023111440 A1 WO 2023111440A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
- A61K8/345—Alcohols containing more than one hydroxy group
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
- A61K8/4973—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with oxygen as the only hetero atom
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/36—Carboxylic acids; Salts or anhydrides thereof
- A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/36—Carboxylic acids; Salts or anhydrides thereof
- A61K8/365—Hydroxycarboxylic acids; Ketocarboxylic acids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/63—Steroids; Derivatives thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
- A61K8/922—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of vegetable origin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/96—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution
- A61K8/97—Cosmetics or similar toiletry preparations characterised by the composition containing materials, or derivatives thereof of undetermined constitution from algae, fungi, lichens or plants; from derivatives thereof
- A61K8/9706—Algae
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- 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
-
- 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
- A61Q19/005—Preparations for sensitive skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/74—Biological properties of particular ingredients
- A61K2800/75—Anti-irritant
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/74—Biological properties of particular ingredients
- A61K2800/78—Enzyme modulators, e.g. Enzyme agonists
- A61K2800/782—Enzyme inhibitors; Enzyme antagonists
Definitions
- compositions and application in particular cosmetic
- the invention relates to a composition and its particular cosmetic application, to provide a soothing effect on the skin and/or maintain homeostasis.
- the skin is a complex organ made up of 3 layers of tissue: the epidermis, the most superficial layer and made up of epithelial tissue including keratinocytes and melanocytes; the dermis, the connective tissue that supports the epidermis and includes, among other things, the fibroblasts; and the hypodermis, fatty tissue located below the dermis.
- the skin constitutes a protective barrier of the body against the outside, it is also a major sensory organ.
- the epidermis, the dermis and the hypodermis are indeed largely innervated and contacts between the nerve fibers constituting the cutaneous nerves and the cutaneous cells have been observed.
- Cutaneous nerve fibers are known to release neuromediators such as substance P, somatostatin, CGPR peptide (Calcitonin-Gene Related Peptide), neuropeptide Y or endorphins.
- Nerv cells epidermal and dermal
- the CGRP peptide is a pain neuromediator just like substance P. It is a peptide of 37 amino acids of which there are 2 forms, alpha and beta, released essentially by the unmyelinated C fibers of the epidermis, we speak of free nerve endings.
- the MOR or popioid receptor is a neuronal endomorphic receptor whose immunohistochemical studies have shown its presence in the nerve fibers of the skin. It thus participates in the modulation of the response to pain at the cutaneous level and the increase in its expression makes it possible to provide a feeling of immediate well-being by relieving pain.
- the cutaneous system is in fact in close interaction with the nervous system and the immune system.
- TCS neuro-immuno-cutaneous system
- a composition which comprises from 0.1 to 8.0 mg/g of at least one xanthophyll, from 1.0 to 45.0 mg/g of at least one fatty acid of omega-3 type, from 0.02 to 0.8 mg/g of at least one sterol, from 0.05 to 1.5 pg/g of at least one phycoprostane and from 700 to 990 mg/g of at least one vegetable oil has effects on the expression of certain proteins of interest of the neuro-immuno-cutaneous system, with the unexpected effect of a calming effect on the skin, in particular on sensitive skin.
- the composition also has effects on increasing the length of neuronal extensions, allowing homeostasis to be maintained.
- composition according to the invention can be produced from a completely natural, non-genetically modified microalgae extract, and without any additive other than a vegetable oil. It is not irritating to the skin and does not induce an allergic reaction.
- composition according to the invention also makes it possible to target several components of the neuro-immuno-cutaneous system, making it particularly effective in reducing sensations of skin discomfort and pain.
- Application WO2013032333A1 describes a composition based on omega-3 fatty acids, in particular eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), asthaxanthin and glycerophospholipids, useful for the prevention or treatment cognitive impairment when administered orally.
- the ingredients are present in the composition in the form of microalgae extracts. This application does not disclose any cosmetic use of such a composition, nor even a composition in different proportions of the molecules described.
- Application JP2003063942A describes a composition for the skin useful for the treatment of sensitive skin.
- Said composition comprises an anti-inflammatory agent and an agent normalizing the barrier function of the skin, making it possible to improve the hydration of the skin.
- Omega-3 fatty acids are described there but as normalizing agents of the barrier function.
- this application does not describe the use of an omega-3 fatty acid effective in reducing skin sensitivity or for a calming effect on the skin.
- Microalgae extracts are also described for their beneficial effect on the skin.
- EP2168570B1 relating to the use of an extract of Tisochrysis lutea (Isochrysis sp. var. Tahiti) capable of modifying or influencing hair growth and/or the pigmentation of the skin and hair.
- a dermo-cosmetic formula described in application WO2015084136A1 may also comprise an extract of a microalga of the genus Isochrysis. This formula has several activities including anti-inflammatory activity, anti-bacterial activity, and antioxidant activity.
- Patent application WO2020178213 also describes a non-therapeutic method for treating sensitive skin, in particular reducing redness, comprising the application of a cosmetic composition comprising a hydrophilic extract of Phaeodactylum tricomutum, in particular an aqueous extract.
- a cosmetic composition comprising a hydrophilic extract of Phaeodactylum tricomutum, in particular an aqueous extract.
- this extract is hydrophilic, it cannot contain omega-3 fatty acids or xanthophylls.
- Application WO02080876 discloses the use of an extract of Phaedodactylum tricomutum as a cosmetic agent promoting the activity of the proteasome of skin cells and for the manufacture of a cosmetic composition intended to protect the skin against the harmful effects of exposure to UV rays and to prevent and/or delay the effects of skin ageing. This application does not describe any soothing effect on the skin.
- the effect of the extract after UV exposure is an anti-aging effect.
- a first object of the invention thus relates to a composition
- a composition comprising from 0.1 to 8.0 mg/g of composition of at least one xanthophyll, from 1.0 to 45.0 mg/g of composition of at least one fatty acid of omega-3 type, from 0.02 to 0.8 mg/g of composition of at least one sterol, from 0.05 to 1.5 pg/g of composition of at least one phycoprostane and of 700 at 990 mg/g of composition of at least one vegetable oil.
- composition of the present invention is disclosed in the present text in a cosmetic application, it is however not restricted thereto. It may thus be envisaged that it be used according to a mode of administration other than that which is recommended for topical application. For example, it could be administered orally.
- Another object relates to the cosmetic, non-therapeutic use of the composition according to the invention to provide a soothing effect on the skin and/or to maintain homeostasis.
- Yet another subject relates to a cosmetic, non-therapeutic care process, comprising the topical application of the composition according to the invention.
- a first object of the invention therefore relates to a composition
- a composition comprising from 0.1 to 8.0 mg/g of composition of at least one xanthophyll, from 1.0 to 45.0 mg/g of composition of at least one fatty acid of omega-3 type, from 0.02 to 0.8 mg/g of composition of at least one sterol, from 0.05 to 1.5 pg/g of composition of at least one phycoprostane and of 700 at 990 mg/g of composition of at least one vegetable oil.
- the composition comprises from 0.1 to 4.0 mg/g of composition of at least one xanthophyll, from 1.0 to 20.0 mg/g of composition of at least one omega-3 fatty acid , from 0.02 to 0.4 mg/g of composition of at least one sterol, from 0.1 to 1.2 pg/g of composition of at least one phycoprostane and from 800 to 990 mg/g of composition of at least one vegetable oil.
- said composition comprises from 0.1 to 1.0 mg/g of composition of at least one xanthophyll, from 1.0 to 5.0 mg/g of composition of fatty acids of omega-3 type, of 0.02 to 0.2 mg/g of composition of at least one sterol, from 0.2 to 1.0 pg/g of composition of at least one phycoprostane and from 850 to 980 mg/g of composition of at least one vegetable oil, and very advantageously, it comprises from 0.1 to 0.5 mg/g of composition of at least one xanthophyll, from 1.0 to 3.1 mg/g of composition of fatty acids of omega-3 type, from 0.02 to 0.15 mg/g of composition of at least one sterol, from 0.35 to 0.8 pg/g of composition of at least one phycoprostane and from 950 to 980 mg / g of composition of at least one vegetable oil.
- the fatty acid(s) of the omega-3 type are a family of unsaturated fatty acids whose hydrocarbon chain has around 4 to 36 carbon atoms, generally around 14 to 36 carbon atoms, and whose the double bond or the first double bond, counted from the terminal methyl group of the chain, is on the third carbon-carbon bond.
- the unsaturation or unsaturations may be cis or trans, independently of each other.
- the most representative acids are alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), but the designation "omega-3 fatty acids" is not restricted to these.
- fatty acid(s) when they are of natural origin, they can be extracted from algae and be in the form of free molecules but also in a derived form such as an esterified form, for example in mono-, di- or triesterified form, or in mixtures of these forms.
- the or at least one of the fatty acids of the omega-3 type is chosen from stearidonic acid (SDA), eicosa pentaenoic acid (EPA), docosahexaenoic acid (DHA) and/or any of their mixtures. More preferably, the omega-3 type fatty acid is SDA.
- xanthophylls means astaxanthin, cantaxanthin, vaucheriaxanthin, lutein, zeaxanthin, diadinoxanthin, neoxanthin, loroxanthin, siphonoxanthin, diatoxanthin, violaxanthin, dinoxanthin, flavoxanthin, ⁇ -cryptoxanthin, p-cryptoxanthin, fucoxanthin and/or any of their derivatives and/or any of their mixtures.
- it is fucoxanthin and/or any of its derivatives.
- derivatives means their esterified form of mono- or multi-esters, their glycosilated form and/or any of their mixtures.
- Sterols are a family of well-known lipids possessing a sterane ring whose carbon in position 3 bears a hydroxyl group, the latter possibly being modified for example by an acetyl group. They include natural sterols or phytosterols, and are grouped together in the present text under the term phycosterols.
- phytosterols of 24-methylene-cholesterol, p-sitosterol, fucosterol, isofucosterol, saringosterol, loxocholesterol acetate, crinosterol, and more particularly brassicasterol, stigmasterol and campesterol, and preferably brassicasterol.
- phytoprostane is meant a family of lipids structurally of the prostaglandin type, of natural origin, resulting from non-directly enzymatic oxidations of the fatty acids naturally present within the microalgal biomasses, grouped together in this text under the term phycoprostanes.
- These compounds are in particular chosen from phytoprostanes, isoprostanes and neuroprostanes, depending on the fatty acid which has undergone the oxidation(s).
- these compounds can be derived from fatty acids such as a-linolenic acid (ALA), arachidonic acid (ARA), eicosapentaenoic acid (EPA), or docosahexaenoic acid (DHA).
- ALA a-linolenic acid
- ARA arachidonic acid
- EPA eicosapentaenoic acid
- DHA docosahexaenoic acid
- Phytoprostanes are primarily derived from ALA and can be selected from 9-epi-9F1t-PhytoP, ent-16-epi-16-F1t-PhytoP, 9-F1t-PhytoP, ent-16B1t-PhytoP, ent-9L1t-PhytoP, 16(RS)-16-A1t-PhytoP.
- Isoprostanes are mainly derived from ARA and EPA and can be selected from 15-E2t-lsoP, 15-F2t-lsoP, 15-epi-15-F2t-lsoP, 5-F2t-lsoP , 8(RS)-8-F3t-1soP.
- Neuroprostanes are mainly derived from DHA and can be selected from 4-F3t-NeuroP, 10-F4t-NeuroP, 10-epi-10-F4t-NeuroP, 4(RS)-4-F4t-NeuroP, 14(RS)-14-F4t-NeuroP, 20(R)-20-F4t-NeuroP.
- the or at least one of the phycoprostanes is chosen from phytoprostanes, isoprostanes and neuroprostanes, again advantageously neuroprostanes.
- vegetable oil means any oil extracted from a plant or an algae, including a microalgae, in particular chosen from olive oil, rapeseed oil, linseed oil, sunflower, a medium chain triglyceride (MCT) oil.
- MCT Medium Chain Triglycerides
- An MCT oil can thus be chosen from coconut oil, advantageously coconut oil, palm kernel oil and palm oil, but it can be obtained from other fats or oils.
- the vegetable oil is coconut oil, very advantageously coconut oil.
- a preferred composition according to the invention comprises: from 0.1 to 8.0 mg/g of composition, preferentially from 0.1 to 4.0 mg/g, very preferentially from 0.1 to 1.0 mg/g and very advantageously from 0.1 to 0, 5 mg/g of fucoxanthin, from 1.0 to 45.0 mg/g of composition, preferentially from 1.0 to 20.0 mg/g, very preferentially from 1.0 to 5.0 mg/g and very advantageously from 1.0 to 3.1 mg/g of at least one fatty acid of the omega-3 type chosen from stearidonic acid (SDA), eicosa pentaenoic acid (EPA), docosahexaenoic acid (DHA) and / or any of their mixtures, from 0.02 to 0.8 mg/g of composition, preferably from 0.02 to 0.4 mg/g, very preferably from 0.02 to 0.2 mg/g and very advantageously from 0.02 to 0.15 mg/g of at least one phycosterol, from 0.05 to 1.5 pg/g of
- compositions comprises: from 0.1 to 8.0 mg/g of composition, preferentially from 0.1 to 4.0 mg/g, very preferentially from 0.1 to 1.0 mg/g and very advantageously from 0.1 to 0.5 mg/g of fucoxanthin, from 1.0 to 45.0 mg/g of composition, preferentially from 1.0 to 20.0 mg/g, very preferentially from 1.0 to 5.0 mg/g and very advantageously from 1.0 to 3.1 mg/g of at least stearidonic acid (SDA), from 0.02 to 0.8 mg/g of composition, preferentially from 0.02 to 0 4 mg/g, very preferably from 0.02 to 0.2 mg/g and very advantageously from 0.02 to 0.15 mg/g of at least one phycosterol, from 0.05 to 1.5 pg/ g of composition, preferably from 0.1 to 1.2 pg/g, very preferably from 0.2 to 1.0 pg/g and very advantageously from 0.35 to 0.8 pg/g of at least one phycoprostane
- compositions further comprises: from 0.1 to 8.0 mg/g of composition, preferentially from 0.1 to 4.0 mg/g, very preferentially from 0.1 to 1.0 mg/g and very advantageously from 0.1 to 0, 5 mg/g of fucoxanthin, from 1.0 to 45.0 mg/g of composition, preferentially from 1.0 to 20.0 mg/g, very preferentially from 1.0 to 5.0 mg/g and very advantageously from 1.0 to 3.1 mg/g of at least stearidonic acid (SDA), from 0.02 to 0.8 mg/g of composition, preferably from 0.02 to 0.4 mg/g, very preferentially from 0.02 to 0.2 mg/g and very advantageously from 0.02 to 0.15 mg/g of at least brassicasterol, from 0.05 to 1.5 pg/g of composition, preferentially of 0.1 to 1.2 pg/g, very preferably from 0.2 to 1.0 pg/g and very advantageously from 0.35 to 0.8 pg/g of at least one phycoprostane chosen from
- the composition may also comprise at least one cosmetically acceptable excipient chosen from natural oils such as argan oil, shea oil, jojoba oil, avocado oil, sweet almond, preservatives, emulsifiers, emollients, surfactants, moisturizers, thickeners, texture agents, conditioners, shine agents, texture agents, film-forming agents, pigments, colorants, fragrances, antimicrobial agents, biological additives, chelating agents, biocidal agents, astringent agents, polymers, reducing agents, pH regulating agents, humectants, conditioning agents.
- natural oils such as argan oil, shea oil, jojoba oil, avocado oil, sweet almond, preservatives, emulsifiers, emollients, surfactants, moisturizers, thickeners, texture agents, conditioners, shine agents, texture agents, film-forming agents, pigments, colorants, fragrances, antimicrobial agents, biological additives, chelating agents, biocidal agents, astringent agents, polymers
- composition according to the invention is in any form suitable for cosmetic use and preferably in a form chosen from a cream, a serum, a gel, a soap, a dermatological bar, a shower gel, an aqueous or oily solution, a oil-in-water emulsion or a water-in-oil emulsion, a mask, a lotion, an ointment, a mousse.
- the invention also relates to a cosmetic composition corresponding to any one or more of the characteristics described above for a composition of the invention, whether they are considered alone or in combination.
- Another object of the invention relates to the cosmetic use of the composition according to the invention to provide a soothing effect on the skin and/or to maintain homeostasis.
- the composition is not used to moisturize the skin.
- Cosmetic use is understood to mean a non-therapeutic use, that is to say a non-pharmaceutical and non-dermatological use; in this indication, it therefore has no aim therapeutic and will advantageously be applied to all or part of healthy skin; however, it is not limited thereto, it can effectively be applied to all or part of injured skin without conferring a therapeutic effect.
- Healthy skin means any area of skin qualified as non-pathological by a dermatologist, that is to say an area of skin showing no injury, redness, infection, scar, allergy, wound, disease, eczema, inflammation, acne and/or dermatitis.
- composition according to the invention is advantageously applied topically.
- a composition of the invention is in a form suitable for topical application.
- topical application means the local application of the composition to the skin or its vaporization on the surface of the skin.
- the composition is a topically acceptable composition, that is to say a composition that is non-irritating to the skin, non-toxic, which does not induce an allergic reaction. It may also comprise at least one cosmetically acceptable excipient.
- composition can be applied topically to at least one area of skin chosen from any area of the face and/or of the body.
- Any area of the body means any area of the arms, legs, thighs, back, torso, neck, feet and/or hands, including the scalp.
- providing a soothing effect means inducing an immediate effect of well-being on the skin, a calming effect, advantageously on healthy skin, very advantageously on skin described as sensitive.
- Sensitive skin means healthy skin showing sensations of pain and/or burning, the characteristic signs of which are itching and/or tingling and/or tightness and/or tingling and/or discomfort, but without visible clinical signs, that is to say without redness, without eczema, without dermatitis, without desquamation or plaque.
- sensitive skin within the meaning of the invention is not allergic skin.
- the term “provide a soothing effect” is understood to mean reducing the genetic and/or protein quantity of the neuropeptide CGRP (Calcitonin Gene-Related Peptide), also called CALCA (Calcitonin related polypeptide alpha), a known neuromediator pain, in the presence of the composition according to the invention.
- CGRP Calcitonin Gene-Related Peptide
- CALCA Calcitonin related polypeptide alpha
- this is a reduction of at least 22% in the presence of the composition according to the invention, preferentially of at least 30%, more preferentially of at least 40% of the protein quantity of CGRP, in comparison of the amount of CGRP proteins measured without addition of the composition according to the invention but in a co-culture of keratinocytes and sensory neurons subjected to oxidative stress in the presence of capsaicin.
- the term “sensory neurons” means human neurons derived from reprogrammed human fibroblast cells. These neurons express the TRPV1 receptor (transient receptor potential cation channel subfamily V member 1), capsaicin receptor, TrkA and MOPr and synthesize substance P and the neuropeptide CGRP in their cytoplasm. They depolarize in the presence of capsaicin.
- TRPV1 receptor transient receptor potential cation channel subfamily V member 1
- capsaicin receptor capsaicin receptor
- TrkA and MOPr synthesize substance P and the neuropeptide CGRP in their cytoplasm. They depolarize in the presence of capsaicin.
- the neuropeptide CGRP is a protein reduction in the neuropeptide CGRP measured in the presence of a concentration of the composition of 0.1%, 0.05% or 0.01% by weight relative to the total weight of the sample.
- the measurement of the protein quantity of CGRP is carried out by ELISA assay under the conditions as described in example 2a) [Table 1],
- the protein reduction in CGRP is at least 16% in the presence of the composition according to the invention, preferably at least 30%, even more preferably at least 40%, in comparison with the quantity of CGRP proteins measured in said co-culture subjected to oxidative stress without the composition according to the invention.
- it is a protein reduction in the neuropeptide CGRP measured in the presence of a concentration of the composition of 0.05% or 0.01% by weight relative to the total weight of the sample.
- the measurement of the protein quantity of CGRP is carried out by ELISA assay under the conditions as described in example 2b) [Table 2].
- the term "providing a soothing effect” means increasing the level of gene and/or protein expression of the MOR receptor (popioid receptor) in the presence of the composition according to the invention, compared the level of gene and/or protein expression of said receptor measured in the absence of the composition (Control).
- it is an increase, in the absence of stress, of the level of protein expression of the MOR receptor in a co-culture of sensory neurons and human keratinocytes, of at least 14%, preferentially by at least 40%, more preferentially by at least 100% and very advantageously by at least 200% relative to the level of protein expression of said receptor measured in the absence of the composition (Control).
- this is an increase in the presence of a concentration of the composition of 0.05% or 0.01% by weight relative to the total weight of the sample.
- the level of protein expression of the MOR receptor is measured by immunostaining, under the conditions described in example 2c) [Table 3].
- this is an increase in the level of gene and/or protein expression of the MOR receptor in the presence of the composition according to the invention, relative to the level of gene and/or protein expression of said receptor measured in the absence of the composition (Control), in a co-culture of sensory neurons and human keratinocytes subjected to oxidative stress in the presence of capsaicin (Positive Control).
- this is an increase in the level of protein expression of the MOR receptor by at least 70%, advantageously by at least 150%, again advantageously by at least 200% with respect to the level of protein expression measured in the co-culture subjected to stress in the presence of capsaicin and without the composition according to the invention.
- the increase is measured in the presence of a concentration of the composition of 0.05% or 0.01% by weight relative to the total weight of the sample.
- the level of protein expression of the MOR receptor is measured by immunostaining, under the conditions described in example 2d) [Table 4].
- the increase is an increase of at least 35%, more preferably of at least 50% and very preferably of at least 200% of the level of protein expression of the MOR receptor in the presence of the composition according to the invention, relative to the level of protein expression of said receptor measured in the absence of the composition (Positive control), at the level of a co-culture of sensory neurons and human keratinocytes subjected to oxidative stress in the presence of 'AITC.
- the increase is measured in the presence of a concentration of the composition of 0.05% or 0.01% by weight relative to the total weight of the sample.
- the level of protein expression of the MOR receptor is measured by immunostaining, under the conditions described in example 2d) [Table 5].
- the term "providing a soothing effect” means reducing the sensitivity of the skin measured in the presence of the composition according to the invention in the context of a clinical study (see example 2e)).
- Homeostasis is defined here as the maintenance of the balance between the functions of exchange and synthesis of the various molecular, cellular components at the cutaneous and/or neuronal level, making it possible to maintain the biological parameters constant when these are subjected to stresses or stimuli induced by changes in external conditions.
- the term “maintaining homeostasis” means maintaining the balance of the neuro-immuno-cutaneous system (NICS) so that the pain felt is effectively correlated with a negative external stimulus, and not induced by an imbalance due to an overrun of the SNIC system decorrelated from an external stimulus.
- NNS neuro-immuno-cutaneous system
- One of the components of the maintenance of this homeostasis is associated with the maintenance of the neuronal network and in fact, with the length of the neuronal extensions.
- the term “maintaining homeostasis” means maintaining and/or increasing the length of neurons in the presence of the composition according to the invention.
- the composition is effective in maintaining said homeostasis when the length of the neuronal extensions is increased by at least 14%, preferably by at least 20% in the presence of the composition according to the invention, in comparison with the length measured without the composition in the co-culture model keratinocytes and sensory neurons subjected to oxidative stress in the presence of capsaicin.
- this is an increase measured in the presence of a concentration of the composition of 0.05% or 0.01% by weight relative to the total weight of the sample, under conditions such as described in Example 3 ([Table 8]).
- the composition according to the invention does not increase the length of the myelenized neurites. It also does not increase the length of unmyelenated fibers in the absence of oxidative stress.
- the composition has no anti-inflammatory activity, that is to say in particular no activity for inhibiting pro-inflammatory markers.
- the invention also relates to the use of a microalgae extract chosen from any one of the taxa Pinguiophyceae, Chrysophyceae, Bacillariophyceae, Mamiellophyceae, Prymnesiophyceae, Haptophyceae, Coccolithophyceae, Isochrysidaceae and Phaeodactylaceae, to prepare the composition according to the invention.
- said use relates to the preparation of the composition comprising from 0.1 to 8.0 mg/g of composition of at least one xanthophyll, advantageously from 0.1 to 4.0 mg/g; from 1.0 to 45.0 mg/g of fatty acid composition of omega-3 type, advantageously from 1.0 to 20.0 mg/g; from 0.02 to 0.8 mg/g of composition of at least one sterol, advantageously from 0.02 to 0.4 mg/g; and from 0.05 to 1.5 pg/g of composition of at least one phycoprostane, advantageously from 0.1 to 1.2 pg/g, to which is added 700 to 990 mg/g of composition, advantageously from 800 to 990mg/g, of at least one vegetable oil.
- the use of a microalgae extract chosen from any one of the taxa Pinguiophyceae, Chrysophyceae, Bacillariophyceae, Mamiellophyceae, Prymnesiophyceae, Haptophyceae, Coccolithophyceae, Isochrysidaceae and Phaeodactylaceae aims to prepare the composition comprising from 0.1 to 1 0.0 mg/g, again advantageously from 0.1 to 0.5 mg/g of composition, of at least one xanthophyll; from 1.0 to 5.0 mg/g, advantageously also from 0.1 to 3.1 mg/g of composition, of fatty acids of omega-3 type; from 0.02 to 0.2 mg/g, advantageously also from 0.02 to 0.15 mg/g of composition, of at least one sterol; and from 0.2 to 1.0 ⁇ g/g, advantageously still from 0.35 to 0.8 ⁇ g/g of composition, of at least one phycoprostane, to which
- microalgae extract means any extract of biomass from organisms capable of photosynthesis obtained by a process making it possible to obtain, directly or indirectly, the composition of the invention. These extracts have a composition, expressed as a mass percentage of the total extract, in proteins between 0.05% and 0.20%, in sterols between 0.005% and 0.050%, and between 0.1% and 0.5% of chlorophyll.
- the lipophilic part making up the extract advantageously the extract of T. lutea, expressed as a mass percentage relative to the lipophilic fraction, comprises 0.438% unsaturated fatty acids, 0.25% omega-3 acids , 0.054% omega-6 acids.
- Said extract also comprises between 0.02% and 0.04% of xanthophylls as a mass percentage relative to the extract. Thus, it may include 0.035% fucoxanthin.
- the extract further comprises 2.65 mg of omega-3 acids/g of extract, and 230 ng of phycoprostane(s)/g of extract.
- the microalgae are cultivated in a controlled manner within suitable systems such as raceways, open ponds or preferably closed systems of the photobioreactor type.
- the photobioreactors used can be of any existing type such as horizontal tubular photobioreactors, vertical such as so-called “green wall panel” systems, flat or columnar photobioreactors.
- the production of biomass will take place within a closed cropping system, by autotrophy with no impact on arable land.
- Biomass production is carried out according to batch, fed-batch, continuous, semi-continuous, turbidostat or chemostat type culture management modes.
- the extracts are obtained after concentration of the biomass, fresh or frozen, by elimination of all or part of the water using chemical or physical processes such as centrifugation, filtration, flocculation, sedimentation, coupled or not, to stages of drying by freeze-drying, vacuum drying, drum drying, atomization or any other process making it possible to lower the water content of the biomass.
- cell lysis processes can be implemented such as the application of pressure, electrical flows of shear forces, the use of enzymes, or any other process allowing the destructuring of tissues, organs , cells or organelles.
- the microalgae extract can be obtained according to any process of the solid-liquid extraction type, which can be by hypercritical fluids or by subcritical fluids, which can involve co-treatments carried out in parallel or sequentially of microwave, ultrasound, pressure , enzymatic.
- the microalgae extract can be obtained by extraction under subcritical conditions.
- the extraction can be carried out in the presence of any appropriate solvent chosen from acetone, hexane, ethyl acetate, methyltetrahydrofuran, heptane, methanol, a natural or branched oil, ethanol or any other solvent making it possible to extract all or part of the compounds of hydrophobic and amphiphilic nature.
- the solvent can be used pure or as a mixture.
- the term “as a mixture” is understood here to mean a mixture with another solvent or a mixture with water in respective proportions by solvent/water volume of 99:1 (v/v) to 1:99 (v/v).
- the solvent or mixture of solvents is separated from the residual biomass after extraction by processes such as centrifugation, filtration and can subsequently be concentrated, or the solvent removed, by techniques such as vacuum evaporation or any other technique. allowing the selective evaporation of the solvent considered.
- the extract thus obtained is lipophilic in nature while comprising amphiphilic molecules.
- the microalgae extract is an extract of Tisochrysis lutea or Isochrysis galbana or Phaeodactylum tricomutum, more preferably T. lutea.
- the microalgae extract is obtained by extraction of the biomass, advantageously fresh, in the presence of an ethanokeau mixture of 99:1 (v/v) to 1:99 (v/v), advantageously of 98:2 ( v/v) to 30:70 (v/v), more preferably 95:5 (v/v).
- it is obtained by extraction from the biomass of T. lutea to obtain the composition according to the invention, under the conditions described in example 1.
- Another object of the present invention also relates to a cosmetic, non-therapeutic care process, comprising the oral administration or the topical application, preferably the topical application, of the composition according to the invention, or of a microalgae extract chosen from any of the Pinguiophyceae, Chrysophyceae, Bacillariophyceae, Mamiellophyceae, Prymnesiophyceae, Haptophyceae, Coccolithophyceae, Isochrysidaceae and Phaeodactylaceae taxa, preferentially Tisochrysis lutea or Isochrysis galbana or Phaeodactylum tricornutum, again preferentially T.
- the extract of T. lutea used in the cosmetic care process is obtained by extraction of biomass, advantageously fresh, in the presence of an ethanol:water mixture of 99:1 (v/v) to 1:99 ( v/v), advantageously from 98:2 (v/v) to 30:70 (v/v), more advantageously from 95:5 (v/v).
- the method comprises the topical application of the composition to at least one area of skin, preferably healthy, chosen from any area of the face and/or of the body, that is to say any area of the arms, legs, thighs, back, torso, neck, feet and/or hands, including the scalp.
- skin preferably healthy
- the percentages are expressed in weight/weight and the temperature is given in degrees Celsius.
- Example 1 method of preparation of the composition and of an extract of T. lutea
- the strain used to prepare the composition according to the invention is the CCAP 927/14 strain available from the Scottish Marine Institute via their Culture Collection of Algae and Protozoa (CCAP) bank.
- CCAP Culture Collection of Algae and Protozoa
- An extract is obtained by extraction in an ethanokeau mixture (95:5; v/v) from fresh biomass from a culture in a photobioreactor in autotrophic mode of the microalgae Tisochrysis lutea. It is insoluble in water and highly viscous preventing any handling at room temperature.
- the extract and the coconut oil are brought to room temperature (25 ⁇ 1°C) 24 hours before preparation.
- the extract is transferred to a centrifuge tube containing the oil in such a way that the final net mass of the mixture is approximately 5 g and the proportion by mass is such that the extract consists of 25% of the total net mass of the blend.
- the mixture is stirred for one minute using a so-called vortex mixing device. Agitation is repeated three times per mixture. A homogeneous mixture is obtained.
- composition obtained comprises:
- Omega-3 type fatty acids (ALA, SDA, EPA, DHA): 2.65 mg/g of composition;
- Phycoprostane(s) 230 ng/g composition; and coconut oil (950 mg/g composition).
- Example 2a Protein reduction of the neuropeptide CGRP in a co-culture of keratinocytes and sensory neurons subjected to oxidative stress in the presence of capsaicin.
- Co-culture of neurons and keratinocytes Sensory neurons were obtained from hiPS cells (human induced Pluripotent Stem cells) themselves obtained from human fibroblasts. The cells were seeded and maintained for a period of 6 days in culture in a medium inducing their differentiation at a temperature of 37° C. (5% CO2). The culture medium was changed every 2 days. After a period of 9 days of culture, the culture medium was changed to a maturation medium. The cells were maintained in culture at a temperature of 37° C. under 5% CO2. The culture medium was changed every 2 to 3 days. After a period of 14 days of culture, commercial keratinocytes from a 29-year-old adult donor (Lonza) were added to the culture of differentiated hiPS cells. The co-culture was maintained in a culture medium consisting of a mixture of maturation medium and growth medium for keratinocytes (Promocell) at a temperature of 37° C. under 5% CO2. The culture medium was changed every 2 to 3 days.
- hiPS cells
- the composition was added to the medium at a final concentration by weight relative to the total weight of the medium and of the composition of 0.01% or 0.05% (w/w ).
- capsaicin (10pM) or AITC (1mM) or DMSO (0.2% w/w) as a control was added to the co-culture in presence of the composition according to the invention.
- composition according to the invention made it possible to significantly reduce the protein quantity of the neuropeptide CGRP in the co-culture model subjected to oxidative stress in the presence of capsaicin, showing the positive soothing effect of the composition at the concentrations tested (** ** p ⁇ 0.0001 One Way Anova test with Dunnett's correction).
- Example 2b Protein decrease in the neuropeptide CGRP in a co-culture of keratinocytes and sensory neurons subjected to oxidative stress in the presence of AITC
- Protocol the protocol is that described in example 2a).
- composition made it possible to significantly reduce the protein quantity of the neuropeptide CGRP in the co-culture model subjected to oxidative stress in the presence of AITC, again showing here the positive soothing effect of the composition at the concentrations tested (*** * p ⁇ ⁇ 0.0001 One Way Anova test with Dunnett's correction).
- Example 2c Protein increase of the MOR receptor in a co-culture of human keratinocytes and sensory neurons not subjected to stress
- Protocol the protocol for preparing the co-culture is that described in example 2a).
- the basal level of protein expression of the MOR receptor was significantly increased, by at least 14% in the presence of the composition according to the invention at the 2 concentrations tested in the absence of stress, in comparison with the control.
- Example 2d Protein increase in the MOR receptor in a co-culture of human keratinocytes and sensory neurons subjected to stress in the presence of capsaicin [Table 41 or AICT [Table 51
- the composition according to the invention made it possible to significantly increase, by at least 70% (Capsaicin) and by at least 35% (AITC) the rate of protein expression of the MOR receptor in the co-culture studied, in comparison with said level of expression measured in the co-cultures subjected to stress.
- the levels of expression in the presence of the composition are clearly higher than that measured in the control co-culture (unstressed).
- Protocol a clinical test was implemented on a population of 42 women of Caucasian origin aged 22 to 66 and presenting healthy skin as defined in the present invention but sensitive.
- a cream comprising by weight relative to the total weight of the cream 0.5% of the composition as prepared in Example 1 was applied twice a day for a period of 14 days to the entire face of 21 of the 42 individuals participating in the study.
- the same cream comprising 0.5% (w/w) of placebo (NaOH, water, Yellow 5 dye and NATPURE COL BROWN LC816) was applied under the same conditions to the entire face of the other 21 individuals.
- a measurement of the vascular disorders was carried out by photography in polarized light using a high resolution camera. This technique consists in obtaining high resolution photographs of % of the face under polarized light under reproducible conditions (Nikkor 60 mm).
- the camera lens is equipped with a filter. The light is provided by means of 2 luminous flashes. The flashes are directed on a polarizing gel (HN32 Sarelec, France).
- the camera filter is positioned at 90° compared to the polarization of the flash filters. The polarized light emitted by the flashes is reflected by the skin of the face when the photograph is taken.
- the use of dedicated software made it possible to determine a vascular image of intensity reflecting the effect of the application: a reduction in this intensity corresponding to a reduction in the sensitivity of the skin analyzed. Results :
- the average vascular intensity of the skins analyzed has decreased by at least 3.4% compared to time 0 (DO) of said application .
- the average vascular intensity of the skins analyzed on which the placebo cream was applied increased by 3.5%, reflecting an increase in skin sensitivity.
- Protocol the protocol for preparing the co-culture of sensory neurons and keratinocytes is that described in example 2a).
- composition at the concentrations tested made it possible to significantly increase the length of the neuronal extensions and made it possible to restore the length measured at the level of the control not subjected to oxidative stress.
- Example 4 Example of a cosmetic formulation comprising the composition
- the components are given in percentage by weight relative to the total weight of the formulation.
- Composition of the invention (Ex. 1) 0.50
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Abstract
Description
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Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18/718,170 US20250041190A1 (en) | 2021-12-14 | 2022-12-13 | Composition and application, in particular cosmetic |
| KR1020247018929A KR20240124289A (ko) | 2021-12-14 | 2022-12-13 | 특히 미용 분야에서 사용하기 위한 조성물 및 응용 |
| EP22840796.1A EP4447915A1 (fr) | 2021-12-14 | 2022-12-13 | Composition et application notamment cosmétique |
| JP2024534759A JP2024546811A (ja) | 2021-12-14 | 2022-12-13 | 特に化粧品の分野で使用するための、組成物及び適用 |
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|---|---|---|---|
| FR2113500A FR3130162B1 (fr) | 2021-12-14 | 2021-12-14 | Composition et application notamment cosmétique |
| FRFR2113500 | 2021-12-14 |
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| WO2023111440A1 true WO2023111440A1 (fr) | 2023-06-22 |
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| PCT/FR2022/052323 Ceased WO2023111440A1 (fr) | 2021-12-14 | 2022-12-13 | Composition et application notamment cosmétique |
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| Country | Link |
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| US (1) | US20250041190A1 (fr) |
| EP (1) | EP4447915A1 (fr) |
| JP (1) | JP2024546811A (fr) |
| KR (1) | KR20240124289A (fr) |
| FR (1) | FR3130162B1 (fr) |
| WO (1) | WO2023111440A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3153748A1 (fr) | 2023-10-10 | 2025-04-11 | Microphyt | Nouvelle utilisation cosmétique d’un extrait de la microalgue T isochrysis lutea. |
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| WO2019083732A1 (fr) * | 2017-10-23 | 2019-05-02 | U.S. Nutraceuticals, Llc D/B/A Valensa International | Composition destinée au traitement de la fatigue oculaire photo-induite et de la réduction associée de vitesse de focalisation oculaire chez l'être humain |
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2021
- 2021-12-14 FR FR2113500A patent/FR3130162B1/fr active Active
-
2022
- 2022-12-13 US US18/718,170 patent/US20250041190A1/en active Pending
- 2022-12-13 KR KR1020247018929A patent/KR20240124289A/ko active Pending
- 2022-12-13 EP EP22840796.1A patent/EP4447915A1/fr active Pending
- 2022-12-13 WO PCT/FR2022/052323 patent/WO2023111440A1/fr not_active Ceased
- 2022-12-13 JP JP2024534759A patent/JP2024546811A/ja active Pending
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| WO2002080876A2 (fr) | 2001-04-03 | 2002-10-17 | Lvmh Recherche | Utilisation d'un extrait d'algue phaeodactylum pour favoriser l'activite du proteasome des cellules de la peau |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3153748A1 (fr) | 2023-10-10 | 2025-04-11 | Microphyt | Nouvelle utilisation cosmétique d’un extrait de la microalgue T isochrysis lutea. |
| WO2025078336A1 (fr) | 2023-10-10 | 2025-04-17 | Microphyt | Nouvelle utilisation cosmétique d'un extrait de la microalgue tisochrysis lutea |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3130162A1 (fr) | 2023-06-16 |
| KR20240124289A (ko) | 2024-08-16 |
| FR3130162B1 (fr) | 2025-07-25 |
| JP2024546811A (ja) | 2024-12-26 |
| EP4447915A1 (fr) | 2024-10-23 |
| US20250041190A1 (en) | 2025-02-06 |
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