Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
  • A61K36/18—Magnoliophyta (angiosperms)
  • A61K36/185—Magnoliopsida (dicotyledons)
  • A61K36/22—Anacardiaceae (Sumac family), e.g. smoketree, sumac or poison oak
• • 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
  • A61K8/9783—Angiosperms [Magnoliophyta]
  • A61K8/9789—Magnoliopsida [dicotyledons]
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
  • A61P17/16—Emollients or protectives, e.g. against radiation
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P39/00—General protective or antinoxious agents
  • A61P39/06—Free radical scavengers or antioxidants
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• • 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
  • A61Q19/02—Preparations for care of the skin for chemically bleaching or whitening 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
  • A61Q19/08—Anti-ageing preparations
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2236/00—Isolation or extraction methods of medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicine
  • A61K2236/30—Extraction of the material
  • A61K2236/37—Extraction at elevated pressure or temperature, e.g. pressurized solvent extraction [PSE], supercritical carbon dioxide extraction or subcritical water extraction
• • 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
• • 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
  • A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
• • 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

Definitions

• the present invention relates to the field of cosmetics and pharmacology and its aim is to use at least one extract of a plant belonging to the Lannea genus, preferably Lannea coromandelica or Lannea grandis, in cosmetic or dermopharmaceutical preparations.
• Lannea coromandelica (Houtt.) Merr. is a tree from the Anacardiaceae family that can mainly be found in India and in various Asian countries.
• the traditional uses of the bark are particularly in the treatment of cuts, other wounds, bruises (sprains and strains) and diarrhea, the aqueous extract of the bark also being used as an abortion agent.
• the leaves are used as a remedy, especially in the treatment of inflammation, arthritis, bruises and general physical pain.
• the aim of the present invention is particularly to use as an agent for the preparation of a cosmetic product, for external use for the skin, the mucous membranes and / or the epithelial appendages (phanere), of at least one extract from a plant belonging to the botanical Lannea genus , preferably Lannea coromandelica or Lannea grandis (synonym Odina Woodier), wherein this extract or extract mixture can be used alone or together with at least one other active ingredient
• these extracts will advantageously be used alone or together with other active ingredients in products that cutaneous signs of aging, cutaneous hyperpigmentation, pigmentation spots, loss of skin elasticity, wrinkles, irritation and inflammation ( Treatment of sensitive skin types) which are intended to combat environmental pollution and / or exposure to sun rays
• the solvent used advantageously being formed from the group formed by water, alcohols, ketones, esters, chlorinated solvents, polyols or mixtures of at least two miscible solvents mentioned above is selected
• the extracts according to the present invention can also be used as variants by extraction with supercritical CO 2 alone or with a co-solvent or by an extraction process using a solvent based on microwave radiation.
• the plant extract can also consist of one or more isolated, purified fraction (s), in particular by chromatography, starting from a crude extract.
• the extracts according to the present invention can be obtained from all accessible parts of the plants, that is to say: the roots, barks (from the roots, stems and the stem). , the leaves and the leafed stems, the grains, fruits and flowers, but preferably starting from the bark of the stem and / or the leaves.
• Barks of the Lannea coromandelica trunk are roughly crushed and then finely crushed in a knife crusher.
• Example 2 The extract obtained on the basis of the extracted dry matter amounts to 14% in relation to the roughly crushed bark.
• the extract obtained on the basis of the extracted dry substance amounts to 10.3% in relation to the roughly shredded leaves
• Melanin a biological polymer that determines the color of the skin, is produced in epidermal melanocytes by a specific enzyme, tyrosinase. This enzyme catalyzes the two initial stages of melanium synthesis, that is, the transformation of tyrosine into DOPA (dihydroxy-phenyl-alanine) ) and then in dopachrome Then the dopachrome is oxidized with the participation of other enzymes and polymerized in melanin, which is passed to the keratinocytes in the form of small granules, the melanosomes
• Figure 1 of the accompanying drawings is characteristic of the results achieved (inhibition test of tyrosinase in tubo by aqueous extracts of Lannea coromandelica bark) and all results (CI50 value) are summarized in Table I below.
• Free radicals are activated chemical species that are characterized by the presence of a free electron that is not bound in pairs. They can form from endogenous molecules such as unsaturated lipids, certain amino acids or from oxygen during spontaneous, enzymatic reactions of the general metabolism or which were induced during inflammation. Certain stress phenomena, such as UV rays or pollution also promote their formation and their excess causes damage to all components of living tissues (lipids, proteins, sugar, ADN, etc.). This toxicity (toxicity) of free radicals is strongly potentialized by the presence of oxygen and explains the aging of living organisms and even serious pathologies such as skin cancer.
• the anti-free radical abilities of the Lannea coromandelica extracts are evaluated by chemical and biochemical tests in tubo, which concern both the original radical-like forms and the reactive forms induced by oxygen: these tests are carried out on synthetic substrates and also on one natural substrate, the collagen, the dermal glycoprotein, which is very sensitive to the activity of the reactive forms of oxygen (or FRO).
• the UV-A are selected as a study model because they penetrate into the dermis and they induce an oxidizing stress in the skin, which is particularly expressed by lipoperoxidation of the cytoplasmic membrane.
• DPPH Diphenylpikryl-Hydrazyl
• HO ° can be exposed by deoxy ⁇ bose.
• Deoxy ⁇ bose is an essential compound of ADN, which is oxidized and then fragmented by HO ° Oxidation product of deoxyribose is exposed by condensing with thiobarbiturate acid (measuring the optical density at 532 nm). This experiment is carried out with and without EDTA to determine the ability of the extract to form inactive complex compounds with iron ("ferriprive effect”)
• 0 2 * is generated during the oxidizing stress by the introduction of an enzyme: the xanthine oxidase (XOD), which breaks down the excess hypoxanthine (HX) during a standstill or a disturbance of the energetic metabolism in the living tissues.
• XOD xanthine oxidase
• OJ * is toxic, particularly because of its ability to spontaneously produce hydrogen peroxide (H 2 O 2 ), or in the presence of superoxide dismutase (SOD), which forms a source of HO * through the Fenton reaction.
• H 2 O 2 hydrogen peroxide
• SOD superoxide dismutase
• the biochemical tests are performed with HX in the presence of XOD and the O 2 * are exposed by luminol, a mixture of luminol and peroxidase, which exposes O 2 * and H 2 O 2 or by a tetrazolium salt (NBT), which is a red, compound evaluated at 540 nm.
• Luminol + microperoxidase test results in percent inhibition (average of 2 experiments).
• Collagen is a dermal glycoprotein that is very sensitive to the activity of the reactive forms of oxygen (or FRO) and it has been proven that singlet oxygen (O 2 1 ) causes interfering cross-links among the proteins.
• FRO reactive forms of oxygen
• the principle of this test is based on measuring the viscosity of an aqueous solution of type I collagen in the presence of a photochemical system that develops O 2 1 .
• O 2 1 which is produced by riboflavin in the presence of UV-A, causes gelling of the collagen in the presence of glucose, which is manifested by an increase in viscosity. This effect is inhibited by the molecules that expose O 2 1 , such as thiourea or aminoguanidine.
• the viscosity is evaluated by measuring the flow time through the capillary of a viscometer called "Cannon-Fenske".
• the UV-A are selected as a study model because they penetrate into the dermis and induce an oxidative stress in the skin, which is particularly exposed by lipoperoxidation of the cytoplasmic membrane.
• the lipoperoxides formed split into malonaldialdehydes (MDA), which are responsible for the reticulation of numerous biological molecules, such as proteins (enzyme inhibition) and nucleic bases (mutagenesis).
• MDA malonaldialdehydes
• Fibroblasts are vaccinated in a nutrient medium defined by calf fetus serum.
• the Lannea coromandelica extract was added 2 to 3 days after inoculation.
• the nutrient medium is replaced by a saline solution and the fibroblasts are irradiated with a UV-A dose (15 J / cm 2 ).
• the MDA rate is dosed in the salt solution floating on the surface and the protein rate is measured in the fibroblasts.
• MDA is dosed by the reaction to thiobarbiturate acid and the proteins according to the Bradford method.
• This activity is at least in part attributable to a bait effect (or “scavenger”) against free radide scales and reactive forms of oxygen (radical hydroxyl, anion superoxide and singlet oxygen) and a chelating effect of iron, which is caused by the anti-HO ° activity has been demonstrated that is greater in the absence of EDTA than in the presence of EDTA.
• a bait effect or "scavenger” against free radide scales and reactive forms of oxygen (radical hydroxyl, anion superoxide and singlet oxygen) and a chelating effect of iron, which is caused by the anti-HO ° activity has been demonstrated that is greater in the absence of EDTA than in the presence of EDTA.
• Lannea coromandelica extracts according to the invention are suitable or intended for skin care products or the epithelial appendages (phaners) with cytophotos-protecting activity in order to combat signs of aging, pollution, inflammation, irritation (treatment of sensitive skin types).
• the PNN secretes an elastase (serine protease) that is active on elastin, proteoglycans and collagens, while "old” or irradiated fibroblasts secrete metalloproteases that have elastase and collagenase activities.
• elastase serine protease
• the two protease types were evaluated by enzymatic in tubo reactions.
• pancreatic elastase serine protease
• substrates two types of substrates: a synthetic, color-forming (chromogenic) substrate and a natural substrate consisting of elastin linked to the red Congo.
• the incubation lasts 30 minutes at room temperature and the coloration is measured at 410 nm and 520 nm, respectively.
• the inhibition test which is tested comparatively, is 1 antitrypsin.
• Table VIII Detection of the anti-elastase activity of the Lannea coromandelica extracts. A method in which elastin associated with the Red Congo is used: results in percent inhibition.
• the tests are carried out with a Klostridium-Hystoliticum collagenase and a synthetic, chromogenic substrate: the FALGPA.
• the incubation lasts 30 minutes at room temperature and the optical density is measured at 324 nm.
• the comparatively tested inhibition test measure is
• Lannea coromandelica extracts have good elastase inhibiting abilities and high collagenase inhibiting abilities.
• extracts according to the invention can advantageously be used for various applications which result in an inhibition of these proteases, such as for example cutaneous tightening, the fight against signs of aging of the skin (wrinkles) and the scalp, anti-inflammatory and anti-inflammatory agents. stimulus effects.
• the aim of the present invention also consists in a cosmetic or dermopharmaceutical composition for external use on the skin, the mucous membranes and / or the epithelial appendages (phaners), which as an active ingredient alone or in combination with at least one other active ingredient, because of its strong , anti-radical-like effect, because of its ability to inhibit tyrosinase and melanogenesis, because of its strong anti-collagenase effect, because of its high anti-elastase effect and / or because of its cytophotos protective effect (especially anti-UVA), at least one is used Contains extract of a plant belonging to the Lannea genus, preferably the Lannea coromandelica plant or the Lannea grandis plant.
• the said extract (s) can be used in this composition, either to achieve one of the above effects or To use properties that are considered separately or to use at least two of these effects or properties or because of all effects or properties that were viewed simultaneously.
• the cosmetic composition according to the invention advantageously contains between 0.001% and 20% in weight, preferably between 0.1% and 3% in weight, a plant extract or a mixture of plant extracts belonging to the Lannea genus, preferably the Lannea grandis or the Lannea coromandelica plant as mentioned above or obtained by one of the processes described above.
• extracts can be used in any form of a finished (galenic) medicine, as is usually used in cosmetics, such as, for example, in emulsions (oil in water and water in oil), facial tonic (lotions), body milk, gels, Hydrogels, creams, pomades, soaps, pens, sprays, epithelial appendages (phanere) water and shampoos.
• cosmetics such as, for example, in emulsions (oil in water and water in oil), facial tonic (lotions), body milk, gels, Hydrogels, creams, pomades, soaps, pens, sprays, epithelial appendages (phanere) water and shampoos.
• said extracts or mixtures of plant extracts can be included in cosmetic vectors such as, for example, liposomes, macro, micro, nanocapsules, macro, micro and nanoparticles or the like.
• compositions according to the invention are now described as examples to illustrate, but not to limit, the implementation of compositions according to the invention.
• a cosmetic product in the form of water that is not rinsed off to combat cutaneous hyperpigmentation and pigment spots can have the following composition:
• the process for the preparation of the non-rinsing lotion consists mainly of dissolving Elestab 305 and the hydroxyethyl cellulose in water warmed to about 50 ° C, spreading the perfume and RH 410 cremophore and then cooling the mixture to room temperature, the subsequent dissolution of the lannea extract and finally the filtering.
• a cosmetic product in the form of a cream for combating cutaneous signs of aging, wrinkles and decreasing suppleness of the skin can be composed of the following two phases:
• the preparation of the above-mentioned cream consists mainly in heating the fat phase to 80 ° C and heating the water phase to 80 ° C and dissolving the Elestab 4112, in the separate preparation of the mother solution from Lannea extract, adding the fat Phase into the aqueous phase under turbotubes, then at about 50 ° C, adding the mother solution from Lannea extract and finally from further stirring until cooling
• Example 3
• a cosmetic product in the form of a cream for sensitive skin types, for combating skin damage caused by sun exposure and pollution can be composed of the following phases:
• the procedure for the preparation of the above-mentioned cream consists mainly of heating the fatty phase to 80 ° C and heating the aqueous phase to 80 ° C and dissolving Elestab 388 and PVP, adding the fatty phase into the aqueous phase Turbine stirring at 80 ° C and finally in gradual cooling with stirring, then adding the mother dispersion of the Lannea extract at about 50 ° C and finally stirring further until cooling.

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• 1999
  • 1999-07-19 FR FR9909428A patent/FR2796549B1/fr not_active Expired - Fee Related
• 2000
  • 2000-07-13 US US10/031,720 patent/US6599537B1/en not_active Expired - Fee Related
  • 2000-07-13 JP JP2001510425A patent/JP2003504388A/ja active Pending
  • 2000-07-13 AU AU68233/00A patent/AU6823300A/en not_active Abandoned
  • 2000-07-13 BR BR0012618-7A patent/BR0012618A/pt not_active Application Discontinuation
  • 2000-07-13 EP EP00956181A patent/EP1196141A1/de not_active Withdrawn
  • 2000-07-13 WO PCT/EP2000/006696 patent/WO2001005368A1/de not_active Application Discontinuation
  • 2000-07-13 CN CN00810552A patent/CN1361680A/zh active Pending
  • 2000-07-13 KR KR1020027000787A patent/KR20020040755A/ko not_active Application Discontinuation
• 2002
  • 2002-09-10 HK HK02106636.5A patent/HK1045112A1/zh unknown
• 2003
  • 2003-04-01 US US10/404,337 patent/US20040018259A1/en not_active Abandoned

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