KR20160056268A - Composition for the inhibition of UV-induced melanogenesis or anti inflammatory comprising extracts or fractions of Psidium guajava L. - Google Patents
Composition for the inhibition of UV-induced melanogenesis or anti inflammatory comprising extracts or fractions of Psidium guajava L. Download PDFInfo
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- KR20160056268A KR20160056268A KR1020150139525A KR20150139525A KR20160056268A KR 20160056268 A KR20160056268 A KR 20160056268A KR 1020150139525 A KR1020150139525 A KR 1020150139525A KR 20150139525 A KR20150139525 A KR 20150139525A KR 20160056268 A KR20160056268 A KR 20160056268A
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- 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)
- A61K36/61—Myrtaceae (Myrtle family), e.g. teatree or eucalyptus
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- A23L1/3002—
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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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
- A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
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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
- A61Q19/02—Preparations for care of the skin for chemically bleaching or whitening the skin
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2200/00—Function of food ingredients
- A23V2200/30—Foods, ingredients or supplements having a functional effect on health
- A23V2200/318—Foods, ingredients or supplements having a functional effect on health having an effect on skin health and hair or coat
Abstract
The present invention relates to a skin whitening or anti-inflammatory composition containing guava, more particularly an extract of Guidaba leaf (Psidium guajava L.) or a fraction thereof.
When the composition of the present invention is used, it has an effect of inhibiting tyrosinase activity as well as inhibiting Orai-1 ion channel which plays an important role in skin darkening due to skin melanin cell melanin formation during sunlight irradiation. In addition, Orai-1 is a calcium ion pathway important for immunological activity, and effectively inhibiting it can solve various inflammatory diseases.
Since guava leaves are safe substances that are not cytotoxic enough to be used for edible purposes, they may be useful for the prevention and treatment of inflammatory / immune diseases such as bronchial asthma, allergic rhinitis and atopic dermatitis.
Description
The present invention relates to a polygonum viscoferum ) extract or a fraction thereof as an active ingredient for skin whitening or anti-inflammation.
Melanogenesis due to the activity of melanocytes can occur through two signal transduction mechanisms. The first is the mechanism of melanin formation by intracellular cAMP stimulation and the second is the mechanism of melanin formation by increasing intracellular calcium concentration.
In the case of melanocortin-induced melanocortin-induced melanocortin (POMC) / melanocortin receptors (melanocortin receptors), melanocortin receptors 1 (MC1-R) / cyclicAMP (cAMP) pathway, initiated by melanocyte-stimulating hormone (α-MSH) or adrenocorticotropic hormone (ACTH).
On the other hand, according to JOURNAL OF INVESTIGATIVE DERMATOLOGY (2012 May; 132 (5): 1443-51), the first journal in the ISI web of knowledge dermatology, the ultraviolet When examined, melanin cells are activated to form melanin, which is believed to be due to an increase in intracellular calcium concentration. More specifically, the
In the above-mentioned article, it was confirmed that the treatment of Orai-1 inhibitor using human melanocytes inhibited the formation of melanin due to ultraviolet light. Therefore, if a drug capable of inhibiting the melanocyte Orai-1 ion channel is developed, it is expected that an inhibitor of skin blackening by ultraviolet rays can be developed.
Recently, much attention has been focused on functional cosmetics having functions of antioxidation, wrinkle reduction, whitening, etc., obtained from natural extracts in order to reduce skin irritation caused by various chemical substances and the like. In addition to low adverse effects on the skin, natural materials have recently become increasingly appreciated as a raw material for skin external preparations, as consumers' responses to external preparations using natural materials have increased.
The active ingredients used for suppression of photoaging are not available as cosmetic raw materials, are very unstable, are not easily transferred to the skin, require a special stabilization system and delivery system, and the effect of improving skin wrinkles is not visible Recently, retinoids have been increasingly attracted attention as a skin protective agent containing retinoids. Currently, retinoids are a means for solving photoaging phenomena such as wrinkles, skin thickening, sagging, and elasticity reduction which are accumulated as sunlight . However, retinoids are very unstable compounds, and they are sensitive to ultraviolet rays, moisture, heat, and oxygen, causing chemical changes easily.
On the other hand, when the immune cells are exposed to the antigen and the antibody, the immunoreceptor stimulation occurs and the continuous calcium influx is activated by the calcium glass and ER calcium depletion due to intracellular phospholipase C (PLC) activity. The influx of calcium into the immune cells is accomplished through the ORAI-1 & STIM protein complex whose molecular properties are revealed in 2006. Calcium influx through this complex is known to be important in activating the calcineurin-NFAT-IL-2 production pathway. Without calcium influx through the ORAI1 ion channel, IL-2 production is reduced, lymphocyte proliferation and T cell-mediated immune responses are reduced, resulting in immunodeficiency disease. Indeed, a serious immunodeficiency disease can occur in humans when the ORAI-1 ion channel and STIM1 deficiency are reported in Nature and the New England Journal of Medicine.
The activity of calcineurin or mRNA transcriptional regulatory factors, which are the targets of drugs such as tacrolimus and glucocorticoid, which are currently clinically applied as powerful immunosuppressants, is initiated by an increase in intracellular calcium concentration, It is regulated by the Orai-STIM complex, which carries calcium directly into the cell. Therefore, if a substance that regulates these ion channels is developed and used, it can have a strong immunoregulatory effect.
Therefore, if a natural substance-derived inflammation inhibitor is developed targeting the Orai-1 ion channel that produces an intracellular calcium signal, it will be able to exert a much stronger immunosuppressive ability than the existing therapeutic agent.
On the other hand, guava is an American tropical plant of the genus Psidium (Myrtaceae). It is a medicinal plant that can utilize leaves, bark and fruit as well as potted plants for healthful and medicinal purposes. Guava, especially guava leaves contain many vitamins and minerals such as vitamin C, magnesium, potassium, and calcium. It is also known to contain many kinds of vitamins and minerals, including peroxidation-inhibiting action (cancer prevention) Polyphenol component) have been reported.
The present inventors not only inhibited skin blackening through inhibition of melanin formation due to exposure to ultraviolet rays, but also studied melanin inhibitory effects and induction of various inflammatory diseases in Guava extract or its fractions while studying natural products effective for inflammatory diseases The present invention has been accomplished on the basis of this finding.
It is therefore an object of the present invention to provide a skin whitening or antiinflammatory composition comprising guava extract or a fraction thereof.
However, the technical problem to be solved by the present invention is not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.
In order to achieve the object of the present invention as described above, the present invention provides a guava (Psidium guajava extract or a fraction thereof as an active ingredient.
In one embodiment of the present invention, the guava may be a guava leaf (Psidium guajava L.).
In another embodiment of the present invention, the extract may be obtained by extracting guava with water, an alcohol having 1 to 4 carbon atoms, or a mixed solvent thereof.
In another embodiment of the present invention, the alcohol having 1 to 4 carbon atoms may be methanol or ethanol.
In another embodiment of the present invention, the fraction may be a hexane fraction, a dichloromethane fraction, an ethyl acetate fraction or a butanol fraction obtained by sequentially fractionating a guava extract with hexane, dichloromethane, ethyl acetate or butanol.
In another embodiment of the present invention, the composition can inhibit melanin formation through inhibition of the ORAI-1 ion channel.
In another embodiment of the present invention, the composition may inhibit tyrosinase activity.
In another embodiment of the present invention, the composition can inhibit skin blackening due to ultraviolet exposure.
In another embodiment of the present invention, the composition may be a pharmaceutical composition.
In another embodiment of the present invention, the composition may be a cosmetic composition.
In another embodiment of the present invention, the composition may be a functional food composition.
The present invention relates to a method for the treatment of psoriasis guajava extract or a fraction thereof as an active ingredient.
In one embodiment of the invention, the immunosuppression may be through inhibition of the ORAI-I pathway.
When the composition of the present invention is used, it has an effect of inhibiting tyrosinase activity as well as inhibiting Orai-1 ion channel which plays an important role in skin darkening due to skin melanin cell melanin formation during sunlight irradiation. In addition, Orai-1 is a calcium ion pathway important for immunological activity, and thus it is effective to solve various inflammatory diseases by effectively inhibiting it.
Since guava leaves are safe substances that are not cytotoxic enough to be used for edible purposes, they may be useful for the prevention and treatment of inflammatory / immune diseases such as bronchial asthma, allergic rhinitis and atopic dermatitis.
1 is a graph showing the inhibitory effect of ORAI-1 on the butanol fraction of guava fraction.
Figure 2 shows the results of calculating the ORAI-1 ion channel inhibition rate of guava extract and its fractions.
Fig. 3 is a graph showing the inhibitory effect of guava extract and its fractions on tyrosinase activity.
FIG. 4 shows the results of confirming the effect of the butanol fraction of guava fraction on the treatment of atopic dermatitis by sensory evaluation in an atopic dermatitis animal model.
The inventors of the present invention have found that guava extract and its fractions have an effect of inhibiting ORAI-1 activity while engaging in research to find a new natural product having an effect of inhibiting melanin formation on various natural products, .
Hereinafter, the present invention will be described in detail.
The present invention relates to a method for the treatment of psoriasis guajava extract or a fraction thereof as an active ingredient. At this time, guava preferably uses guava leaves.
In the present invention, guava extract can be extracted using conventional solvents known in the art for extracting the extract from natural products, that is, under ordinary temperature and pressure conditions, using a conventional solvent. For example, in the present invention, the guava extract may be at least one solvent selected from water, alcohols having 1 to 4 carbon atoms, and mixed solvents thereof, preferably methanol or ethanol. In addition, the method for extracting the extract from guava may be carried out by various methods such as hot water extraction, cold extraction, reflux extraction, and ultrasonic extraction, but is not limited thereto.
In the present invention, the guava fraction is obtained by extracting guava with a solvent, filtering the extracted extract, concentrating under reduced pressure to obtain a guava extract, and sequentially fractionating it using hexane, dichloromethane, ethyl acetate and butanol Can be. Preferably a butanol fraction.
In one embodiment of the present invention, guava extract and its fractions were prepared (see Example 1), and their ORAI-1 inhibitory effect was confirmed. As a result, the guava extract or its fractions according to the present invention showed an ORAI- (See Example 2). ≪ tb > < TABLE >
In another embodiment of the present invention, it was confirmed that guava extract or its fractions had an inhibitory effect on tyrosinase activity, and the guava extract or its fractions according to the present invention had a superior tyrosinase activity inhibitory effect as compared with the control group (see Example 3) ).
Therefore, the guava extract or the fractions thereof according to the present invention have an effect of inhibiting melanin formation due to exposure to ultraviolet rays through inhibition of ORAI-1 ion channel and inhibition of tyrosinase activity, And can be usefully used for applications.
Accordingly, the composition for whitening skin of the present invention may be in the form of a pharmaceutical composition, and the pharmaceutical composition may further comprise a pharmaceutically acceptable carrier containing guava extract or its fractions as an active ingredient. Pharmaceutically acceptable carriers in the pharmaceutical compositions of the present invention include, but are not limited to, saline, buffered saline, water, glycerol, and ethanol.
The pharmaceutical composition of the present invention can be prepared into any formulation for oral or parenteral administration, and preferably has an external preparation for skin. The dermatological formulations can be, but are not limited to, powders, gels, ointments, creams, liquids or aerosol formulations.
The pharmaceutical composition of the present invention may be administered orally or parenterally (for example, skin application, intravenous injection, subcutaneous injection, intraperitoneal injection or topical application) depending on the intended method, The severity of the disease, the form of the drug, the route of administration, and the time, but may be suitably selected by those skilled in the art.
The pharmaceutical composition of the present invention is administered in a pharmaceutically effective amount. In the present invention, "pharmaceutically effective amount" means an amount sufficient to treat a disease at a reasonable benefit / risk ratio applicable to medical treatment, and an effective dosage level is determined depending on the type of disease, severity, , Sensitivity to the drug, time of administration, route of administration and rate of release, duration of treatment, factors including co-administered drugs, and other factors well known in the medical arts. The pharmaceutical composition of the present invention may be administered as an individual therapeutic agent or in combination with other therapeutic agents, and may be administered sequentially or simultaneously with conventional therapeutic agents, and may be administered singly or in multiple doses. It is important to take into account all of the above factors and to administer the amount in which the maximum effect can be obtained in a minimal amount without side effects, which can be easily determined by those skilled in the art.
Specifically, the effective amount of the pharmaceutical composition of the present invention may vary depending on the patient's age, sex, condition, body weight, absorbency of the active ingredient, inactivity and excretion rate, disease type, May be administered at a daily dose of 0.001 to 150 mg, preferably 0.01 to 100 mg, per 1 kg of body weight, or one to three divided doses per day. However, the dosage may be varied depending on the route of administration, the severity of obesity, sex, weight, age, etc. Therefore, the dosage is not limited to the scope of the present invention by any means.
In addition, the skin whitening composition of the present invention may be in the form of a cosmetic composition, and the cosmetic composition may contain guava extract or a fraction thereof as an active ingredient.
The cosmetic composition of the present invention may be prepared into any of the formulations conventionally produced in the art, and may be prepared, for example, as a solution, suspension, emulsion, paste, gel, cream, lotion, powder, soap, But are not limited to, cleansing, oils, powder foundations, emulsion foundations, wax foundations and sprays. More specifically, it can be manufactured in the form of a soft lotion, a nutritional lotion, a nutritional cream, a massage cream, an essence, an eye cream, a cleansing cream, a cleansing foam, a cleansing water, a pack, a spray or a powder.
The cosmetically effective carrier contained in the cosmetic composition of the present invention may be a carrier conventionally used in the art depending on the formulation. When the formulation of the present invention is a paste, cream or gel, an animal oil, vegetable oil, wax, paraffin, starch, tracant, cellulose derivative, polyethylene glycol, silicone, bentonite, silica, talc or zinc oxide may be used as the carrier component .
In the case where the formulation of the present invention is a powder or a spray, lactose, talc, silica, aluminum hydroxide, calcium silicate or polyamide powder may be used as a carrier component. Especially, in the case of a spray, a mixture of chlorofluorohydrocarbons, propane / Propane or dimethyl ether.
When the formulation of the present invention is a solution or an emulsion, a solvent, a dissolving agent or an emulsifying agent is used as a carrier component, and examples thereof include water, ethanol, isopropanol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, , 3-butyl glycol oil, glycerol aliphatic ester, polyethylene glycol or sorbitan fatty acid esters.
In the case where the formulation of the present invention is a suspension, a carrier such as water, a liquid diluent such as ethanol or propylene glycol, a suspending agent such as ethoxylated isostearyl alcohol, polyoxyethylene sorbitol ester and polyoxyethylene sorbitan ester, Cellulose, aluminum metahydroxide, bentonite, agar or tracant, etc. may be used.
When the formulation of the present invention is an interfacial active agent-containing cleansing, the carrier component may include aliphatic alcohol sulfate, aliphatic alcohol ether sulfate, sulfosuccinic acid monoester, isethionate, imidazolinium derivative, methyltaurate, sarcosinate, fatty acid amide Ether sulfates, alkylamidobetaines, aliphatic alcohols, fatty acid glycerides, fatty acid diethanolamides, vegetable oils, lanolin derivatives, or ethoxylated glycerol fatty acid esters.
The ingredients included in the cosmetic composition of the present invention include, in addition to the active ingredient and the carrier ingredient, the ingredients conventionally used in cosmetic compositions and include conventional ingredients such as antioxidants, stabilizers, solubilizers, vitamins, May include adjuvants.
Furthermore, the skin whitening composition of the present invention may be in the form of a functional food composition for preventing or improving whitening, and the functional food composition may contain guava extract or its fractions as an active ingredient.
There is no particular limitation on the kind of the food. Examples of foods to which the active ingredient can be added include dairy products including dairy products, meat, sausage, bread, biscuits, rice cakes, chocolates, snacks, confectionery, pizza, ramen noodles, other noodles, gums, ice cream, , Beverages, alcoholic beverages and vitamin complexes, dairy products, and dairy products, all of which include health functional foods in a conventional sense.
In the functional food composition of the present invention, the active ingredient may be directly added to the food or may be used together with other food or food ingredients, and may be suitably used according to a conventional method. The amount of the active ingredient to be mixed can be suitably determined according to the intended use (for prevention or improvement). In general, the composition of the present invention is added in an amount of not more than 15% by weight, preferably not more than 10% by weight based on the raw material, in the production of food or beverage. However, in the case of long-term consumption intended for health and hygiene purposes or for health control purposes, the amount may be less than the above range.
The functional food composition of the present invention is not particularly limited to the ingredients other than those containing the active ingredient as the essential ingredient in the indicated ratio and may contain various flavors or natural carbohydrates as an additional ingredient such as ordinary drinks . Examples of the above-mentioned natural carbohydrates include monosaccharides such as glucose, fructose and the like; Disaccharides such as maltose, sucrose and the like; And polysaccharides, for example, conventional sugars such as dextrin, cyclodextrin and the like, and sugar alcohols such as xylitol, sorbitol and erythritol. Natural flavors (tau martin, stevia extracts (e.g., rebaudioside A, glycyrrhizin, etc.) and synthetic flavors (saccharin, aspartame, etc.) can be advantageously used as flavors other than those described above . The ratio of the above-mentioned natural carbohydrate can be appropriately determined by a person skilled in the art.
In addition to the above, the functional food composition of the present invention may contain flavoring agents such as various nutrients, vitamins, minerals (electrolytes), synthetic flavors and natural flavors, colorants and heavies (cheese, chocolate etc.), pectic acid and its salts, And salts thereof, organic acids, protective colloid thickeners, pH adjusting agents, stabilizers, preservatives, glycerin, alcohols, carbonating agents used in carbonated drinks, and the like. These components may be used independently or in combination. The ratios of these additives can also be appropriately selected by those skilled in the art.
In addition, the guava extract or its fractions according to the present invention have an immunosuppressive effect through inhibition of ORAI-1 ion channel, and can be used for prevention of skin damage due to ultraviolet rays, prevention of inflammatory / immune diseases such as bronchial asthma, allergic rhinitis, And may be useful for improvement and treatment.
In another embodiment of the present invention, the therapeutic effect of the guava butanol fraction in the atopic dermatitis animal model has been confirmed to show a far superior therapeutic effect than the 1% hydrocortisone ointment currently used most effectively and effectively for the treatment of atopic dermatitis See Example 4).
Accordingly, the present invention relates to a method for producing guajava extract or a fraction thereof as an active ingredient. The anti-inflammatory or immunosuppressive composition of the present invention can also be used in the form of pharmaceutical, cosmetic, or functional food composition, which is the same as described above, and thus a detailed description thereof will be omitted.
Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided only for the purpose of easier understanding of the present invention, and the present invention is not limited by the following examples.
[Example]
Example 1. Preparation of guava extract and fractions
The guava leaves (Psidium guajava L.) were cut three times, and then 3 L of 70% MeOH was heated and extracted twice for 3 hours, and the solvent and water were evaporated by filtration to prepare powdered guava extract. Thereafter, water is added to the Guava leaf MeOH extract powder, hexane is added thereto, and the mixture is shaken to separate the organic solvent layer and the water layer. The dichloromethane (CH 2 Cl 2 ) is again added to the water layer, Layer and the water layer are separated from each other and ethyl acetate (EtOAc) is added again to the water layer to separate the organic solvent layer and the water layer from each other, and then the butanol (BuOH) is again added to the water layer to separate the organic solvent layer and the water layer The respective hexane fractions, dichloromethane fractions, ethyl acetate fractions and butanol fractions were recovered.
Example 2. Confirmation of ORAI-1 Inhibitory Effect of Guava Fractions
The ORAI-1 inhibitory effect of the guava methanol extract, hexane fraction, dichloromethane fraction, ethyl acetate fraction and butanol fraction prepared in Example 1 was measured. The human ORAI-1 protein expressed in the immune cells was overexpressed in the HEK-293T cell line to measure the intracellular calcium current in real time using a patch clamp technique Respectively.
The patch clamp technique for Orai-1 overexpressed HEK-293T cell line was performed by whole cell patch clamp. Glass electrodes with resistances of 2 to 4 Mohm were used. Signals from a patch clamp amplifier (Axopatch 700B, Axon instruments, USA) were observed through Axoscope 10.4 and Clampfit 10.4 (cAxon instruments, USA). (Digidata-1440A, Axon instruments, USA) equipped with a pClamp software (v10.4) and a personal computer with an operating clock of 3.2GHz to record and store the current response at a fixed voltage and excitation voltage, Respectively. The results obtained for the membrane voltage clamp were analyzed and processed using clampfit v10.4, origin (Microcal software, USA).
To measure the current through Orai-1, the extracellular solution was pH 7.4 solution containing 135 mM NaCl, 3.6 mM KCl, 1 mM MgCl 2 , 10 mM CaCl 2 , 5 mM D-glucose, and 10 mM HEPES And the pipette solution used was a solution of pH 7.2 containing 130 mM Cs-Glutamate, 20 mM BAPTA, 1 mM MgCl 2 , 3 mM MgATP, 0.002 mM sodium pyruvate and 20 mM HEPES. To activate the Orai-1 ion channel, 20 μM inositol triphosphate (InsP 3 ) was added to the pipet solution.
As a result, as shown in Figs. 1 and 2, it was confirmed that the guava extract or its fractions had an inhibitory effect on the ORAI-1 ion channel, and the guava butanol fraction had an excellent effect for inhibiting ORAI-1 activity .
Example 3. Confirmation of tyrosinase activity inhibitory effect of guava extract and fractions
In order to measure the inhibition effect of the guava methanol extract, hexane fraction, dichloromethane (methylene chloride) fraction, ethyl acetate fraction and butanol fraction produced through Example 1, tyrosinase inhibition was tested as follows.
Tyrosinase is an enzyme that plays an important role in the formation of melanin from L-DOPA. It treats L-DOPA, a substrate, with tyrosinase and guava extract and fractions to induce melanin formation by tyrosinase. Experiments were carried out to see how much it was suppressed compared to before treatment. More specifically, a mixture of sodium phosphate buffer (pH 6.8, 1/15 M; 1.2 mL), Levodopa (L-DOPA) (1.5 mM; 0.5 mL) and guava extract and fractions (10 mg / The sample was placed in a solution containing tyrosinase and reacted at 30 ° C for 10 minutes. When the reaction occurred and melanin was formed, the absorbance was measured at 475 nm using a microplate reader. As a control, 200 μg / mL of kojic acid was used.
As a result, as shown in FIG. 3, it was confirmed that Guava extract or its fractions had an inhibitory effect on tyrosinase activity as compared with the control group. In particular, it was confirmed that guava butanol fraction had an excellent effect for inhibiting tyrosinase activity.
Example 4. Confirmatory effect of atopic dermatitis treatment using animal model
The therapeutic effect of the guava butanol fraction prepared in Example 1 was observed in an animal model of atopic dermatitis.
The NC / Nga mice used in this experiment is an ointment that contains the house dust mite allergen in spontaneous atopic dermatitis is well known, but a mortar model with low spontaneous dermatitis induction rate, the severe differences in the intensity of the induced atopic dermatitis experiments (AD ointment ® , Biostir) to induce atopic dermatitis for 2 weeks and then treated with guava butanol extract for 1 week. The modified SCORAD score was used to evaluate the treatment effect of atopic dermatitis.
4-1. Preparation of reagents and experimental animals
To evaluate the therapeutic effect, 1% hydrocortisone lotion (lactic care lotion, GlaxoSmithKline) and glycerin (Ninjin Pharma) were prepared. The test sample was prepared by dissolving 1% of guava butanol fraction in glycerin. ® Biostir's AD ointment for atopic dermatitis induction, 4% SDS (Sodium dodecyl sulfate ), hair removal cream was prepared (Veet ®, oxy kitben kijyeo below).
Experimental animals were fed with 4-week-old female NC / Nga mice (SLC Japan, Shizuoka, Japan) and fed with solid feed and water freely. They were kept at room temperature 22 ± 2 ℃, %, Illuminance 200 lux (8 hours lighting, 20 hours off), and adapted to the laboratory environment for 1 week in SPF environment.
4-2. Induction of atopic dermatitis
After anesthesia, the NC / Nga mice after complete removal of hair after hair removal cream a hair removal up to the top, such as electric epilator from ear to fully dry with a hair dryer applied to the hair removal portion the AD ointment ® 100mg using a flat stick Respectively. From 2 times of application, 150 ㎕ of 4% SDS solution was sprayed without using hair removal cream to break the skin barrier, followed by natural drying for 4 hours and then applying AD ointment. After applying AD Ointment ® three times a week for two weeks, sensory evaluation was carried out.
Modifide SCORAD score, which is a general clinical evaluation method for atopic dermatitis, was used as a sensory test. Four items (erythema / hemorrhage, edema, scaling, (dry), scored / excoriated / erosion] were scored as 0 (good), 1 (poor), 2 (poor), and 3 (very bad) Were selected and divided into four groups. The average score of each group was 10 points.
4-3. Evaluation of efficacy of guava butanol fraction
As a result, as shown in Fig. 4, the SCORAD score score of the fourth group in which a 1% guava butanol fraction was dissolved in glycerin was measured in a sensory evaluation after 7 days of application, and the SCORAD score score of the second group (SCORAD (SCORAD score, 5 points), which is the most common and effective treatment for atopic dermatitis, and 1% hydrocortisone ointment, The SCORAD score was significantly lower than that of the control group.
It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.
Claims (13)
The guava is a guava leaf ( Psidium guajava L.). ≪ / RTI >
Wherein the guava extract is obtained by extracting guava with water, an alcohol having 1 to 4 carbon atoms or a mixed solvent thereof.
Wherein the alcohol having 1 to 4 carbon atoms is methanol or ethanol.
Wherein the fraction is a hexane fraction, a dichloromethane fraction, an ethyl acetate fraction or a butanol fraction obtained by sequentially fractionating a guava extract with hexane, dichloromethane, ethyl acetate or butanol.
Wherein said composition inhibits melanogenesis through inhibition of the ORAI-I pathway.
Wherein the composition inhibits tyrosinase activity.
Wherein said composition inhibits skin blackening due to ultraviolet exposure.
Wherein the composition is a pharmaceutical composition.
Wherein the composition is a cosmetic composition.
Wherein the composition is a functional food composition.
Wherein the immunosuppression is through inhibition of the ORAI-I pathway.
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Cited By (5)
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WO2018056497A1 (en) * | 2016-09-26 | 2018-03-29 | 주식회사 프롬바이오 | Immunopotentiating food composition comprising amla fruit extract and guava leaf extract |
KR101929500B1 (en) | 2018-07-27 | 2019-03-14 | 재단법인 전남생물산업진흥원 | Nano emulsion composition of guava and producing method thereof |
WO2020013571A1 (en) * | 2018-07-09 | 2020-01-16 | 주식회사 레모넥스 | Pharmaceutical composition and functional health food for preventing or treating macular degeneration |
CN114796319A (en) * | 2022-03-22 | 2022-07-29 | 山东第一医科大学(山东省医学科学院) | Preparation method and application of guava leaf extract |
KR102472487B1 (en) | 2022-06-14 | 2022-12-01 | (주)올바름디앤비 | Cosmetic composition comprising natural extract mixture |
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2015
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2018056497A1 (en) * | 2016-09-26 | 2018-03-29 | 주식회사 프롬바이오 | Immunopotentiating food composition comprising amla fruit extract and guava leaf extract |
WO2020013571A1 (en) * | 2018-07-09 | 2020-01-16 | 주식회사 레모넥스 | Pharmaceutical composition and functional health food for preventing or treating macular degeneration |
US11633447B2 (en) | 2018-07-09 | 2023-04-25 | Lemonex Inc. | Pharmaceutical composition and functional health food for preventing or treating macular degeneration |
KR101929500B1 (en) | 2018-07-27 | 2019-03-14 | 재단법인 전남생물산업진흥원 | Nano emulsion composition of guava and producing method thereof |
CN114796319A (en) * | 2022-03-22 | 2022-07-29 | 山东第一医科大学(山东省医学科学院) | Preparation method and application of guava leaf extract |
KR102472487B1 (en) | 2022-06-14 | 2022-12-01 | (주)올바름디앤비 | Cosmetic composition comprising natural extract mixture |
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