EP3713555A1 - Quercetin-based composition for treating rhinosinusitis - Google Patents
Quercetin-based composition for treating rhinosinusitisInfo
- Publication number
- EP3713555A1 EP3713555A1 EP18814794.6A EP18814794A EP3713555A1 EP 3713555 A1 EP3713555 A1 EP 3713555A1 EP 18814794 A EP18814794 A EP 18814794A EP 3713555 A1 EP3713555 A1 EP 3713555A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- quercetin
- weight
- dihydroxybenzoyl
- trihydroxy
- glucoside
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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- 239000000203 mixture Substances 0.000 title claims abstract description 154
- ZVOLCUVKHLEPEV-UHFFFAOYSA-N Quercetagetin Natural products C1=C(O)C(O)=CC=C1C1=C(O)C(=O)C2=C(O)C(O)=C(O)C=C2O1 ZVOLCUVKHLEPEV-UHFFFAOYSA-N 0.000 title claims abstract description 135
- HWTZYBCRDDUBJY-UHFFFAOYSA-N Rhynchosin Natural products C1=C(O)C(O)=CC=C1C1=C(O)C(=O)C2=CC(O)=C(O)C=C2O1 HWTZYBCRDDUBJY-UHFFFAOYSA-N 0.000 title claims abstract description 135
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- OIUBYZLTFSLSBY-HMGRVEAOSA-N quercetin 4'-O-beta-D-glucopyranoside Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=C(C2=C(C(=O)C3=C(O)C=C(O)C=C3O2)O)C=C1O OIUBYZLTFSLSBY-HMGRVEAOSA-N 0.000 claims abstract description 119
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- BPICBUSOMSTKRF-UHFFFAOYSA-N xylazine Chemical compound CC1=CC=CC(C)=C1NC1=NCCCS1 BPICBUSOMSTKRF-UHFFFAOYSA-N 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/06—Aluminium, calcium or magnesium; Compounds thereof, e.g. clay
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
- A61K31/352—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. methantheline
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/192—Carboxylic acids, e.g. valproic acid having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/365—Lactones
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7042—Compounds having saccharide radicals and heterocyclic rings
- A61K31/7048—Compounds having saccharide radicals and heterocyclic rings having oxygen as a ring hetero atom, e.g. leucoglucosan, hesperidin, erythromycin, nystatin, digitoxin or digoxin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/20—Elemental chlorine; Inorganic compounds releasing chlorine
-
- 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)
- A61K36/88—Liliopsida (monocotyledons)
- A61K36/896—Liliaceae (Lily family), e.g. daylily, plantain lily, Hyacinth or narcissus
- A61K36/8962—Allium, e.g. garden onion, leek, garlic or chives
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/02—Inorganic compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/22—Heterocyclic compounds, e.g. ascorbic acid, tocopherol or pyrrolidones
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/0012—Galenical forms characterised by the site of application
- A61K9/0043—Nose
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/08—Solutions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P11/00—Drugs for disorders of the respiratory system
- A61P11/02—Nasal agents, e.g. decongestants
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- 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
- A61K2236/33—Extraction of the material involving extraction with hydrophilic solvents, e.g. lower alcohols, esters or ketones
- A61K2236/331—Extraction of the material involving extraction with hydrophilic solvents, e.g. lower alcohols, esters or ketones using water, e.g. cold water, infusion, tea, steam distillation or decoction
-
- 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
- A61K2236/50—Methods involving additional extraction steps
- A61K2236/51—Concentration or drying of the extract, e.g. Lyophilisation, freeze-drying or spray-drying
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
- A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
Definitions
- the present invention relates to a particular composition and its use in the treatment of rhinosinusitis.
- the invention also relates to a process for obtaining such a composition.
- Rhinosinusitis is an inflammatory disease of the nasal cavity and paranasal sinus cavities, characterized by obstruction or congestion and runny nose, pain and pressure in the face, reduction or loss of Smell and / or mucopurulent flow mainly from the middle meatus, edema and obstruction of the mucosa of the middle meatus area.
- Rhinosinusitis is classified as follows: acute RS (RSA) with a duration of illness ⁇ 12 weeks, chronic RS (CSR) with duration> 12 weeks, with polyp (RSCwNP) or without nasal polyp (RSCsNP).
- RSA acute RS
- CSR chronic RS
- RSSNP polyp
- RSCsNP nasal polyp
- rhinosinusitis terminology includes all forms of the disease, including acute and chronic rhinitis, acute and chronic sinusitis, with or without nasal polyp.
- Rhinosinusitis is one of the most prevalent diseases in the world, with an average prevalence of more than 10% of the world's population.
- rhinosinusitis affects 1 in 8 people, with an annual health expenditure of more than $ 11 billion (Rosenfeld, RM et al., Clinical Practice Guideline (Update): Adult Sinusitis, Otolaryngology-Head and Neck Surgery 152 (2S), 2015, ppl-39).
- the total cost of treating a patient with chronic rhinosinusitis is $ 2609 per year in the United States; the total cost of treating a patient with chronic rhinosinusitis in a university hospital is $ 1861 per year in Europe.
- Rhinosinusitis is one of the most expensive diseases for employers in the United States. Among chronic diseases, rhinosinusitis is the disease that causes the most costs from treatment and home care.
- rhinosinusitis The treatment of rhinosinusitis is guided by the guidelines governed by international associations such as: the European Academy of Allergology and Clinical Immunology and the European Society of Rhinology. According to the protocol established by these associations (Rhinosinusitis and Nasal Polyps 2012), the different forms of rhinosinusitis are treated in the following way:
- the first-line treatment is symptomatic therapy: analgesics, saline irrigation, antihistamines and decongestants may be offered, despite the lack of evidence of their effectiveness. If there has been no improvement in the patient's condition for 7 to 14 days, intra-nasal corticosteroids are recommended.
- first-line antibiotics amoxicillin alone or with clavulanic acid
- radiological imaging should be performed to confirm the microbial cause of the disease and to verify the absence of a complication. If there is no improvement after the use of an antibiotic, it is recommended to change it (eg macrolides). If treatment fails, intra-nasal corticosteroid maintenance and / or surgery may be recommended.
- the treatment protocol is as follows: after endoscopic examination and CT imaging of nasal cavities and sinuses, corticosteroids intravenously nasal are prescribed. If there has been no improvement in the condition of the patient for 3 months, long-term treatment with antibiotics may be added. If there is still no improvement, surgery is recommended.
- intranasal corticosteroids are effective in one of 14 patients treated (Hayward, G et al., Intranasal Corticosteroids in Management of Acute Sinusitis:
- Nasal decongestants may be recommended for palliative treatment, but continued administration (greater than 3 - 5 days) may cause rhinitis drug.
- Isotonic or hypertonic saline solutions for nasal irrigation are widely used in the practice of daily hygiene. In general, saline is the most used. The volume of nasal solution varies from 5 mL to 500 mL. The effect of isotonic saline is explained by the ability of solutions to remove irritating foreign materials and mediators of inflammation of the nasal cavity.
- saline is the most used.
- the volume of nasal solution varies from 5 mL to 500 mL.
- the effect of isotonic saline is explained by the ability of solutions to remove irritating foreign materials and mediators of inflammation of the nasal cavity.
- One of the formulations for nasal lavage was developed by Ted Keller (US2013 / 0156871, Keller Ted, June 20, 2013), where he discovers the nasal solution comprising sodium chloride and a buffer consisting of sodium ascorbate and sodium bicarbonate. sodium. After dissolution in water, this composition can be used to clean
- the present invention aims to overcome the problems of existing solutions and provide the compositions for cleaning the nose and sinuses cavity to effectively prevent and treat rhinosinusitis acute and chronic.
- the invention relates to compositions comprising salt; and active agents of the polyphenolic group chosen from the compounds: quercetin, quercetin-4'-glucoside, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, protocatechic acid, which may be contain impurities derived from quercetin, comprising quercetin-3'-glucoside, quercetin-7'-glucoside, diglucosides and quercetin triglucosides, quercetin dimers, in an amount of less than 5% by weight of the total amount of active agents.
- quercetin with quercetin derivatives such as quercetin-4'-glucoside, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) - benzofuranone, protocatechic acid.
- quercetin derivatives such as quercetin-4'-glucoside, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) - benzofuranone, protocatechic acid.
- quercetin derivatives such as quercetin-4'-glucoside, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) - benzofuranone, protocatechic acid.
- Another object of the invention is to provide a process for the preparation of these compositions.
- active agent within the meaning of the invention is meant the compound or the ingredient producing the desired therapeutic effect.
- impurity within the meaning of the invention is meant the compound or the ingredient without therapeutic effect, concomitant with the active agents, present in the composition of a drug in a minor amount.
- the term "effective therapeutic quantity" is intended to mean the amount of active agent that can produce the desired therapeutic effect in the subjects treated.
- patient or “subject” within the meaning of the invention is meant a mammal, comprising the animal or the human, to whom the present invention may be applied.
- the invention therefore relates to a composition for rinsing the nasal cavity and sinus cavities for the prevention or the curative or prophylactic treatment of acute and chronic rhinitis, acute and chronic sinusitis, comprising:
- At least one active agent of the polyphenolic group chosen from the compounds: quercetin-4'-glucoside, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, protocatechic acid; and
- quercetin is in anhydrous form with an approximate molecular weight of 302 g / mol, or in the form of quercetin hydrate with a mass approximate molecular weight of 320 g / mol, or in the form of quercetin dihydrate with an approximate molecular weight of 338 g / mol.
- the invention relates to nasal compositions containing active ingredients with proven efficacy for the treatment of rhinosinusitis.
- the molecules contained in the composition according to the invention can be extracted from the onion peel.
- the efficacy of the crude extract and isolated compounds has been studied in rhinosinusite models developed in animals.
- the results of this invention are described in the examples.
- the results of this research have established the effectiveness of onion peel extract and compounds isolated from this extract: quercetin, quercetin-4'-glucoside, 2- (3,4-dihydroxybenzoyl) -2 , 4,6-trihydroxy-3 (2H) -benzofuranone and protocatechic acid for rhinosinusitis, to develop formulations containing these agents, and to develop methods of treatment.
- quercetin can be used in anhydrous form, with an approximate molecular weight of 302 g / mol, or in the form of quercetin hydrate with an approximate molecular weight of 320 g / mol, or form of quercetin dihydrate, with an approximate molecular weight of 338 g / mol.
- compositions according to the invention are conceivable.
- Nasal composition including salt and quercetin, quercetin-4'-glucoside 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and acid
- the nasal formulation comprises salt and a plant extract containing flavonoids: quercetin, quercetin-4'-glucoside, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 ( 2H) -benzofuranone and protocatechic acid.
- the salt may be selected from sodium chloride or potassium chloride, or both, in an amount sufficient to produce the hypotonic, isotonic or hypertonic solution.
- the amount of salt may be from 83 to 99.77% by weight of the dry composition.
- the amount of quercetin in the dry composition may comprise 0.23 to 3% by weight.
- the amount of quercetin-4'-glucoside in the dry composition may be between 0.000001 - 3% by weight.
- the amount of 2- (3,4- dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone in the dry composition may be between 0.000001 - 3% by weight.
- the amount of protocatechic acid in the dry composition may be between 0.000001 - 3% by weight.
- the active agent comprising quercetin, quercetin-4'-glucoside, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and the acid protocatechic
- the method of preparing the extract containing active agents may comprise the following steps:
- This method makes it possible to obtain a crude extract composed of the active agents: quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, quercetin-4'-glucoside, protocatechic acid .
- the crude extract may also contain other impurities derived from quercetin, for example, quercetin-3'-glucoside, quercetin-7'-glucoside, diglucosides and triglucosides of quercetin, quercetin dimers, in an amount not exceeding 5% of the total mass of active agents.
- Another extraction method consists in using organic solvents, preferably methanol or ethanol diluted with water, in a proportion of between 50/50 and 90/10 (v / v).
- organic solvents preferably methanol or ethanol diluted with water, in a proportion of between 50/50 and 90/10 (v / v).
- the defined amount of onion peel powder is mixed with the organic solvent in a proportion of 1-10 g / 30 mL (w / v), and stirred for 24 hours at room temperature.
- the solution obtained is filtered and then evaporated to dryness.
- the crude extract obtained can be separated by the method of high performance liquid chromatography.
- the separation conditions can be as follows:
- a Phenomenex C18 column (21.2 mm x 150 mm, 5 ⁇ m, 100 A) of the HPLC apparatus.
- the following solvents may be used: Solvent A: 0.5% H2O / TFA (1 L / 5 mL); Solvent B: ACN.
- the flow rate can be: 15 mL / min.
- Qualitative and quantitative analyzes of the compositions can be performed by UPLC-DAD-MS techniques (Agilent Technologies, USA).
- the elution conditions may be as follows: 1 ⁇ l of solution is injected into the Agilent C18 column (2.1 mm, 1.8 ⁇ m) of UPLC at a temperature of 25 ° C.
- the solvents used can be: Solvent A: H 2 0 / 0.1% HCOH 0.1 and Solvent B: ACN / 0.1% HCOOH.
- the flow rate can be: 0.4 mL / min.
- Isolated compounds can be detected first by the diode array detector and then by the mass spectrometry analyzer. Mass Spectrometry analyzes can be performed in negative or positive mode. The separation and analysis techniques by the UPLC-DAD-MS method can be the same for all compositions.
- the composition may be prepared by mixing the commercially available compounds: quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, quercetin-4'- glucoside, protocatechic acid and salt selected from sodium chloride or potassium chloride.
- the dry composition can be prepared by one of the following methods: Dissolution of quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, quercetin-4'-glucoside, protocatechic acid with salt in water water heated to 80 - 100 ° C. Then cooling the solution to room temperature, followed by freezing and lyophilization. b). Dissolution of quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, quercetin-4'-glucoside, protocatechic acid in heated water at 80 - 100 ° C.
- quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, quercetin-4'-glucoside and protocatechic acid powder is mixed with sodium or potassium chloride.
- composition can be sterilized or not, can be supplied in dry or liquid form, distributed in single-dose or multi-dose containers.
- the composition may comprise one or more biologically active ingredients consistent with the therapy and additives selected from pharmaceutical carriers, stabilizers, surfactants, preservatives, and essential oils.
- the biologically active ingredients may be selected from antibiotics, corticosteroids, and / or copper, manganese and sulfur salts.
- Essential oils can be chosen from eucalyptus oil, rosemary oil, tea tree oil or menthol.
- the dry composition can subsequently be mixed with water.
- the solution or suspension obtained comprises 0.4 - 2% by weight of sodium chloride and / or potassium chloride, 0.0023 - 0.03% by mass of quercetin, 0.00000001 - 0.03% by mass of quercetin 4'-glucoside, 0.00000001 - 0.03% by weight of 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and 0.00000001 - 0.03% mass of protocatechic acid and other impurities derived from quercetin up to 0.5% by total weight of the active agents.
- the dry composition may be mixed with the solution containing the bicarbonate salt.
- the bicarbonate salt may be selected from sodium bicarbonate or potassium bicarbonate or both.
- the concentration of bicarbonate salt can vary up to 0.5%, preferably between 0.1% - 0.5% by weight, more preferably 0.25 - 0.5% by weight.
- the temperature of the water or bicarbonate solution can be between 30 ° C and 38 ° C. At this temperature, some compounds, for example quercetin, may remain in suspension, others can be completely dissolved. According to a particular variant, the water may be boiled and then cooled to 37 ° C. before mixing.
- the water used for the preparation of the liquid composition can be distilled, deionized, purified and sterilized.
- composition may be presented as follows:
- composition consisting of two parts:
- Part A containing the dry powder, including sodium chloride or potassium chloride, quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, quercetin 4'-glucoside and protocatechic acid.
- Part B containing 20 ml of water or solution of sodium bicarbonate or potassium bicarbonate.
- Nasal composition including salt and quercetin, quercetin-4'-glucoside and protocatechic acid.
- the nasal formulation comprises salt and a plant extract containing flavonoids: quercetin, quercetin-4'-glucoside and protocatechic acid.
- the salt may be selected from sodium chloride or potassium chloride, or both, in an amount sufficient to produce the hypotonic, isotonic or hypertonic solution.
- the amount of salt may be from 86 to 99.77% by weight of the dry composition.
- the amount of quercetin in the dry composition may comprise 0.23 to 3% by weight.
- the amount of quercetin-4'-glucoside in the dry composition may be between 0.000001 - 3% by weight.
- the amount of protocatechic acid in the dry composition may be between 0.000001 - 3% by weight.
- the active agent comprising quercetin, quercetin-4'-glucoside and protocatechic acid may be prepared by a process for extracting plants containing flavonoids, for example onion peel.
- the method of preparing the extract containing active agents may comprise the following steps:
- This method makes it possible to obtain a crude extract composed of the active agents: quercetin, quercetin-4'-glucoside, protocatechic acid.
- the crude extract may also contain other impurities derived from quercetin, for example, quercetin-3'-glucoside, quercetin-7'-glucoside, diglucosides and triglucosides of quercetin, quercetin dimers, in an amount not exceeding 5% of the total mass of active agents.
- Another extraction method consists in using organic solvents, preferably methanol or ethanol diluted with water, in a proportion of between 50/50 and 90/10 (v / v).
- organic solvents preferably methanol or ethanol diluted with water, in a proportion of between 50/50 and 90/10 (v / v).
- the defined amount of onion peel powder is mixed with the organic solvent in a proportion of 1-10 g / 30 mL (w / v), and stirred for 24 hours at room temperature.
- the solution obtained is filtered and then evaporated to dryness.
- the crude extract obtained can be separated by the method of high performance liquid chromatography.
- the separation conditions can be as follows:
- Qualitative and quantitative analyzes of the compositions can be performed by UPLC-DAD-MS techniques (Agilent Technologies, USA).
- the elution conditions may be as follows: 1 ⁇ l of solution is injected into the Agilent C18 column (2.1 mm, 1.8 ⁇ m) of UPLC at a temperature of 25 ° C.
- the solvents used can be: Solvent A: H 2 0 / 0.1% HCOOH and Solvent B: ACN / 0.1% HCOOH.
- the flow rate can be: 0.4 mL / min.
- Isolated compounds can be detected first by the diode array detector and then by the mass spectrometry analyzer. Mass Spectrometry analyzes can be performed in negative or positive mode.
- the separation and analysis techniques by the UPLC-DAD-MS method can be the same for all compositions.
- the composition may be prepared by mixing the commercially available compounds: quercetin, quercetin-4'-glucoside, protocatechic acid and salt selected from sodium chloride or potassium chloride.
- the dry composition can be prepared by one of the following methods: Dissolution of quercetin, quercetin-4'-glucoside, protocatechic acid with salt in water heated to 80-100 ° C. Then cooling the solution to room temperature, followed by freezing and lyophilization. b). Dissolution of quercetin, quercetin-4'-glucoside, protocatechic acid in water heated to 80-100 ° C. Then cooling the solution to room temperature, adding and dissolving the salt, followed by freezing and lyophilization. c). Quercetin, quercetin-4'-glucoside and protocatechic acid are dissolved in the organic solvent, preferably in ethanol or methanol diluted with water.
- the proportion of organic solvent / water can vary between 50/50 and 90/10 (v / v). Salt is dissolved in water. Then both solutions are mixed at room temperature, then frozen and lyophilized. d).
- the quercetin, quercetin-4'-glucoside and protocatechic acid powder is mixed with sodium chloride or potassium chloride.
- the composition can be sterilized or not, can be supplied in dry or liquid form, distributed in single-dose or multi-dose containers.
- the composition may comprise one or more biologically active ingredients consistent with the therapy and additives selected from pharmaceutical carriers, stabilizers, surfactants, preservatives, and essential oils.
- the biologically active ingredients may be selected from antibiotics, corticosteroids, and / or copper, manganese and sulfur salts.
- Essential oils can be chosen from eucalyptus oil, rosemary oil, tea tree oil or menthol.
- the dry composition can subsequently be mixed with water.
- the solution or suspension obtained comprises 0.4 - 2% by weight of sodium chloride and / or potassium chloride, 0.0023 - 0.03% by mass of quercetin, 0.00000001 - 0.03% by mass of quercetin 4'-glucoside and 0.00000001 - 0.03% by weight of protocatechic acid, and other impurities derived from quercetin up to 0.5% by total weight of the active agents.
- the dry composition may be mixed with the solution containing the bicarbonate salt.
- the bicarbonate salt may be selected from sodium bicarbonate or potassium bicarbonate or both.
- the concentration of bicarbonate salt can vary up to 0.5%, preferably between 0.1% - 0.5% by weight, more preferably 0.25 - 0.5% by weight.
- the temperature of the water or bicarbonate solution may be between 30 and 38 ° C. At this temperature, some compounds, for example quercetin, may remain in suspension, others may be completely dissolved. According to a particular variant, the water may be boiled and then cooled to 37 ° C. before mixing.
- the water used for the preparation of the liquid composition can be distilled, deionized, purified and sterilized.
- composition may be presented as follows: Composition consisting of two parts:
- part A the dry powder, comprising sodium chloride or potassium chloride, quercetin, quercetin-4'-glucoside and protocatechic acid.
- Part B containing 20 ml of water or solution of sodium bicarbonate or potassium bicarbonate.
- the nasal formulation comprises salt, quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, and protocatechic acid.
- the salt may be selected from sodium chloride or potassium chloride or both, in an amount sufficient to produce the hypotonic, isotonic or hypertonic solution.
- the amount of salt may comprise from 91 to 99.77% by weight of the dry composition.
- the amount of quercetin in the dry composition may comprise 0.23 to 3% by weight.
- the amount of 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone in the dry composition may comprise between 0.000001 - 3% by weight.
- the amount of protocatechic acid in the dry composition may comprise between 0.000001 - 3% by weight.
- the active agent comprising quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and protocatechic acid
- the active agent comprising quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and protocatechic acid
- the method of preparing the extract containing active agents may comprise the following steps:
- This method makes it possible to obtain a crude extract composed of the active agents: quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, quercetin-4'-glucoside, acid protocatechic.
- the crude extract may also contain other impurities derived from quercetin, for example, quercetin-3'-glucoside, quercetin-7'-glucoside, diglucosides and triglucosides of quercetin, quercetin dimers, in an amount not exceeding 5% of the total mass of active agents.
- Another method of extraction is to use organic solvents, preferably methanol or ethanol diluted with water in a proportion of between 50/50 and 90/10 (v / v).
- organic solvents preferably methanol or ethanol diluted with water in a proportion of between 50/50 and 90/10 (v / v).
- the defined amount of onion peel powder is mixed with the organic solvent in a proportion of 1-10 g / 30 ml (w / v), and stirred for 24 hours at room temperature.
- the solution obtained is filtered and then evaporated to dryness.
- the crude extract obtained can be separated by the method of high performance liquid chromatography.
- the separation conditions can be as follows:
- Qualitative and quantitative analyzes of the compositions can be performed by UPLC-DAD-MS techniques (Agilent Technologies, USA).
- the elution conditions may be as follows: 1 ⁇ l of solution is injected into the Agilent C18 column (2.1 mm, 1.8 ⁇ m) of UPLC at a temperature of 25 ° C.
- the solvents used can be: Solvent A: H 2 0 / 0.1% HCOOH and Solvent B: ACN / 0.1% HCOOH.
- the flow rate can be: 0.4 mL / min.
- Isolated compounds can be detected first by the diode array detector and then by the mass spectrometry analyzer. Mass Spectrometry analyzes can be performed in negative or positive mode.
- the separation and analysis techniques by the UPLC-DAD-MS method can be the same for all compositions.
- the composition can be prepared by mixing the commercially available compounds: quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) - benzofuranone, protocatechic acid and salt selected from sodium chloride or potassium chloride.
- the dry composition can be prepared by one of the following methods: Dissolution of quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, protocatechic acid with salt in water heated to 80 - 100 ° C. Then cooling the solution to room temperature, followed by freezing and lyophilization. b). Dissolution of quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, protocatechic acid in water heated to 80-100 ° C. Then cooling the solution to room temperature, adding and dissolving the salt, followed by freezing and lyophilization. c).
- Quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and protocatechic acid are dissolved in the organic solvent, preferably in diluted ethanol or methanol. with water.
- the proportion of organic solvent / water can vary between 50/50 and 90/10 (v / v).
- Salt is dissolved in water. Then, both solutions are mixed at room temperature, frozen and lyophilized. d).
- the quercetin powder of 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and protocatechic acid is mixed with sodium chloride or potassium chloride.
- composition can be sterilized or not, can be supplied in dry or liquid form, distributed in single-dose or multi-dose containers.
- the composition may comprise one or more biologically active ingredients consistent with the therapy and additives selected from pharmaceutical carriers, stabilizers, surfactants, preservatives, and essential oils.
- the biologically active ingredients may be selected from antibiotics, corticosteroids, and / or copper salts, manganese and sulfur.
- Essential oils can be chosen from eucalyptus oil, rosemary oil, tea tree oil or menthol.
- the dry composition can subsequently be mixed with water.
- the solution or suspension obtained comprises 0.4 - 2% by weight of sodium chloride and / or potassium chloride, 0.0023 - 0.03% by mass of quercetin, 0.00000001 - 0.03% by mass of 2 - (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and 0.00000001 - 0.03% by weight of protocatechic acid.
- the dry composition may be mixed with the solution containing the bicarbonate salt.
- the bicarbonate salt may be selected from sodium bicarbonate or potassium bicarbonate or both.
- the concentration of bicarbonate salt can vary up to 0.5%, preferably between 0.1% - 0.5% by weight, more preferably 0.25 - 0.5% by weight.
- the temperature of the water or bicarbonate solution may be between 30 and 38 ° C. At this temperature, certain compounds, for example quercetin, may remain in suspension; others can be completely dissolved. According to a particular variant, the water may be boiled and then cooled to 37 ° C. before mixing.
- the water used for the preparation of the liquid composition can be distilled, deionized, purified and sterilized.
- composition may be presented as follows:
- composition consisting of two parts:
- Part A dry powder, including sodium chloride or potassium chloride, quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and protocatechic acid .
- Part B containing 20 ml of water or solution of sodium bicarbonate or potassium bicarbonate.
- Nasal composition including salt and quercetin, quercetin-4'-glucoside and 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3-benzofuranone.
- the nasal formulation comprises salt and quercetin, quercetin-4'-glucoside and 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone.
- the salt may be selected from sodium chloride or potassium chloride, or both, in an amount sufficient to produce the hypotonic, isotonic or hypertonic solution.
- the amount of salt may be from 91 to 99.99% by weight of the dry composition.
- the amount of quercetin in the dry composition can comprise between 0.000001 - 3% by weight.
- the amount of quercetin-4'-glucoside in the dry composition may be between 0.000001 - 3% by weight.
- the amount of 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone in the dry composition can be between 0.000001 - 3% by weight.
- the active agent comprising quercetin, quercetin-4'-glucoside and 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone
- the method of preparing the extract containing active agents may comprise the following steps:
- the crude extract may also contain other impurities derived from quercetin, for example, quercetin-3'-glucoside, quercetin-7'-glucoside, diglucosides and triglycerides of quercetin, quercetin dimers, in an amount not exceeding 5% of the total mass of the active agents.
- Another method of extraction is to use organic solvents, preferably methanol or ethanol diluted with water in a proportion between 50/50 and 90/10 (v / v).
- organic solvents preferably methanol or ethanol diluted with water in a proportion between 50/50 and 90/10 (v / v).
- the defined amount of onion peel powder is mixed with the organic solvent in a proportion of 1-10 g / 30 mL (w / v), and stirred for 24 hours at room temperature.
- the solution obtained is filtered and then evaporated to dryness.
- the crude extract obtained can be separated by the method of high performance liquid chromatography.
- the separation conditions can be as follows:
- Qualitative and quantitative analyzes of the compositions can be performed by UPLC-DAD-MS techniques (Agilent Technologies, USA).
- the elution conditions may be as follows: 1 ⁇ l of solution is injected into the Agilent C18 column (2.1 mm, 1.8 ⁇ m) of UPLC at a temperature of 25 ° C.
- the solvents used can be: Solvent A: H 2 0 / 0.1% HCOOH and Solvent B: ACN / 0.1% HCOOH.
- the flow rate can be: 0.4 mL / min.
- Isolated compounds can be detected first by the diode array detector and then by the mass spectrometry analyzer. Mass Spectrometry analyzes can be performed in negative or positive mode.
- the separation and analysis techniques by the UPLC-DAD-MS method can be the same for all compositions.
- the composition may be prepared by mixing the commercially available compounds: quercetin, quercetin-4'-glucoside and salt selected from sodium chloride or potassium chloride.
- the dry composition can be prepared by one of the following methods: at). Dissolution of quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, quercetin-4'-glucoside with salt in water heated to 80 - 100 ° C. Then cooling the solution to room temperature, followed by freezing and lyophilization. b). Dissolution of quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, quercetin-4'-glucoside in water heated to 80 - 100 ° C. Then cooling the solution to room temperature, adding and dissolving the salt, followed by freezing and lyophilization.
- Quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and quercetin-4'-glucoside are dissolved in the organic solvent, preferably in ethanol or methanol diluted with water.
- the proportion of organic solvent / water can vary between 50/50 and 90/10 (v / v).
- Salt is dissolved in water. Then both solutions are mixed at room temperature, then frozen and lyophilized.
- the quercetin powder of 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, quercetin-4'-glucoside is mixed with sodium chloride or potassium chloride.
- composition can be sterilized or not, can be supplied in dry or liquid form, distributed in single-dose or multi-dose containers.
- the composition may comprise one or more biologically active ingredients consistent with the therapy and additives selected from pharmaceutical carriers, stabilizers, surfactants, preservatives, and essential oils.
- the biologically active ingredients may be selected from antibiotics, corticosteroids, and / or copper, manganese and sulfur salts.
- Essential oils can be chosen from eucalyptus oil, rosemary oil, tea tree oil or menthol. According to one embodiment, the dry composition can subsequently be mixed with water.
- the solution or suspension obtained comprises 0.4 - 2% by weight of sodium chloride and / or potassium chloride, 0.00000001 - 0.03% by mass of quercetin, 0.00000001 - 0.03% by mass of 2 - (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and 0.00000001 - 0.03% by weight of quercetin-4'-glucoside.
- the dry composition may be mixed with the solution containing the bicarbonate salt.
- the bicarbonate salt may be selected from sodium bicarbonate or potassium bicarbonate or both.
- the concentration of bicarbonate salt can vary up to 0.5%, preferably between 0.1% - 0.5% by weight, more preferably 0.25 - 0.5% by weight.
- the temperature of the water or bicarbonate solution can be between
- the water may be boiled and then cooled to 37 ° C. before mixing.
- the water used for the preparation of the liquid composition can be distilled, deionized, purified and sterilized.
- composition may be presented as follows:
- composition consisting of two parts:
- Part A the dry powder, comprising sodium chloride or potassium chloride, quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and quercetin-4 glucoside.
- the nasal composition including salt, quercetin and 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone.
- the nasal formulation comprises salt, quercetin and 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone.
- the salt may be selected from sodium chloride or potassium chloride, or both, in an amount sufficient to produce the hypotonic, isotonic or hypertonic solution.
- the amount of salt may be from 94 to 99.99% by weight of the dry composition.
- the amount of quercetin in the dry composition can comprise between 0.000001 - 3% by weight.
- the amount of 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone in the dry composition may be between 0.000001 - 3% by weight.
- the active agent comprising quercetin and 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone can be prepared by a plant extraction process. containing flavonoids, for example, onion peel.
- the method of preparing the extract containing active agents may comprise the following steps:
- This method makes it possible to obtain a crude extract composed of the active agents: quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, quercetin-4'-glucoside, protocatechic acid .
- the crude extract may also contain other impurities derived from quercetin, for example, quercetin-3'-glucoside, quercetin-7'-glucoside, diglucosides and triglucosides of quercetin, quercetin dimers, in an amount not exceeding 5% of the total mass of active agents.
- Another method of extraction is to use organic solvents, preferably methanol or ethanol diluted with water in a proportion between 50/50 and 90/10 (v / v).
- organic solvents preferably methanol or ethanol diluted with water in a proportion between 50/50 and 90/10 (v / v).
- the defined amount of onion peel powder is mixed with the organic solvent in a proportion of 1-10 g / 30 mL (w / v), and stirred for 24 hours at room temperature.
- the solution obtained is filtered and then evaporated to dryness.
- the crude extract obtained can be separated by the method of high performance liquid chromatography.
- the separation conditions can be as follows:
- Qualitative and quantitative analyzes of the compositions can be performed by UPLC-DAD-MS techniques (Agilent Technologies, USA).
- the elution conditions may be as follows: 1 ⁇ l of solution is injected into the Agilent C18 column (2.1 mm, 1.8 ⁇ m) of UPLC at a temperature of 25 ° C.
- the solvents used can be: Solvent A: H 2 0 / 0.1% HCOOH and Solvent B: ACN / 0.1% HCOOH.
- the flow rate can be: 0.4 mL / min.
- Isolated compounds can be detected first by the diode array detector and then by the mass spectrometry analyzer. Mass Spectrometry analyzes can be performed in negative or positive mode.
- the separation and analysis techniques by the UPLC-DAD-MS method can be the same for all compositions.
- the composition may be prepared by mixing the commercially available compounds: quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone and salt selected from sodium chloride or potassium chloride.
- the dry composition can be prepared by one of the following methods: Dissolution of quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone with salt in water heated to 80-100 ° C. Then cooling the solution to room temperature, followed by freezing and lyophilization. b). Dissolution of quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone in water heated to 80-100 ° C. Then cooling the solution to room temperature, adding and dissolving the salt, followed by freezing and lyophilization. c).
- Quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone are dissolved in the organic solvent, preferably in ethanol or methanol diluted with water. .
- the proportion of organic solvent / water can vary between 50/50 and 90/10 (v / v).
- Salt is dissolved in water. Then both solutions are mixed at room temperature, then frozen and lyophilized. d).
- the quercetin powder of 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone is mixed with sodium chloride or potassium chloride.
- composition can be sterilized or not, can be supplied in dry or liquid form, distributed in single-dose or multi-dose containers.
- the composition may comprise one or more biologically active ingredients consistent with the therapy and additives selected from pharmaceutical carriers, stabilizers, surfactants, preservatives, and essential oils.
- the biologically active ingredients may be selected from antibiotics, corticosteroids, and / or copper, manganese and sulfur salts.
- Essential oils can be chosen from eucalyptus oil, rosemary oil, tea tree oil or menthol.
- the dry composition can subsequently be mixed with water.
- the solution or suspension obtained comprises 0.4 - 2% by weight of sodium chloride and / or potassium chloride, 0.00000001 - 0.03% by weight of quercetin and 0.00000001 - 0.03% by weight of 2 - (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone.
- the dry composition may be mixed with the solution containing the bicarbonate salt.
- the bicarbonate salt may be selected from sodium bicarbonate or potassium bicarbonate or both.
- the salt concentration of bicarbonate can vary up to 0.5%, preferably between 0.1% - 0.5% by weight, more preferably 0.25 - 0.5% by weight.
- the temperature of the water or bicarbonate solution may be between 30 and 38 ° C. At this temperature, some compounds, for example quercetin, may remain in suspension, others may be completely dissolved. According to a particular variant, the water may be boiled and then cooled to 37 ° C. before mixing.
- the water used for the preparation of the liquid composition can be distilled, deionized, purified and sterilized.
- composition may be presented as follows: Composition consisting of two parts:
- Part A the dry powder, comprising sodium chloride or potassium chloride, quercetin and 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone.
- Part B containing 20 ml of water or solution of sodium bicarbonate or potassium bicarbonate.
- the invention is now illustrated by examples and tests demonstrating the effectiveness of the invention in the treatment of rhinosinusitis.
- the qualitative and quantitative analyzes of the two extracts were performed by UPLC-DAD-MS techniques (Agilent Technologies, USA).
- the elution conditions are as follows: 1 ⁇ L of solution is injected into the Agilent C18 column (2.1 mm, 1.8 ⁇ m) of UPLC at a temperature of 25 ° C.
- the solvents used are: Solvent A: H 2 O / 0.1% HCOOH and Solvent B: ACN / 0.1% HCOOH. Flow rate: 0.4 mL / min.
- the isolated compounds are first detected by the diode array detector and then by the mass spectrometry analyzer. Mass spectrometry analyzes were performed in negative and positive modes.
- LC-MAS spectra of LC-MAS are acquired in "Full Scan" over the entire mass range (m / z) ranging from 100 to 1400.
- the data set is then collected and processed by the Hystar software version 3.0 .
- the alcoholic crude extract was separated by the HPLC technique.
- quercetin (purity - 98.9%) 295 mg;
- Quercetin 40 mg was mixed with 150 mL of boiling water. Then, the solution was cooled, and 3 g of NaCl was added and dissolved. The resulting solution was frozen and lyophilized. The powder obtained was dispensed in 197.6 mg in single-dose containers under sterile conditions.
- quercetin 50 mg quercetin was dissolved in 50 mL MeOH / H 2 O (50/50: v / v). 3.75 g of NaCl were dissolved in 150 ml of H 2 O. The two solutions were mixed at room temperature, then frozen and lyophilized. The resulting powder was dispensed by 200 mg in single-dose containers under sterile conditions.
- the initial amounts of the active ingredients in 20 mL (the volume used for the one-time treatment) of the onion peel water extract were determined as: onion peel extract - 10 mg / 20 mL;
- quercetin - 0.485 mg / 20 mL
- quercetin-4'-glucoside - 0.283 mg / 20 mL; protocatechic acid - 0.722 mg / 20 mL.
- compositions have been formulated based on water, NaCl or NaCl + NaHCO 3 and active agents (onion peel extract, quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy- 3 (2H) -benzofuranone, quercetin-4'-glucoside or protocatechic acid).
- active agents onion peel extract, quercetin, 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy- 3 (2H) -benzofuranone, quercetin-4'-glucoside or protocatechic acid).
- Rhinosinusitis was induced by the introduction of 100 ⁇ L of 1% lipopolysaccharide (LPS) into each nostril of rabbits for three days.
- LPS lipopolysaccharide
- the compounds have been used in the following concentrations: onion peel water extract - 1 mg / mL;
- quercetin 0.01 mg / mL
- quercetin-4'-glucoside 0.25 mg / mL
- the compounds were diluted in solutions of 0.9-1% sodium chloride or 0.75% NaCl + 0.25% NaHCO3 solution heated to 37 ° C prior to administration. With the exception of quercetin + 2- (3,4-dihydroxybenzoyl) -2,4,6-trihydroxy-3 (2H) -benzofuranone, which is a suspension, the compounds formed low opalescent color solutions.
- the solutions were administered intranasally at a dose of 2 mL in each nasal cavity once a day for seven days.
- the rabbits were kept in the "head down" position during administration.
- the nasal cavities of the animals were visually examined immediately after euthanasia.
- the nasal parts of the rabbit heads were fixed in the 10% formaldehyde solution for 24 hours and then de-calcined for 14 days in the hydrochloric acid / water solution (25: 1). . Then, the animals' noses were sectioned transversely on four levels: A - at the incisor teeth, B - at the posterior incisors, C - at the second crest of the palatal bone, and D - at the level of the teeth. first premolars. Then, the tissues were cleaned with water for 12 hours and incorporated into the paraffin wax by the conventional method. The histological sections with a thickness of 3-5 ⁇ m were prepared using a microtome.
- tissue sections were stained with blue alcian at pH 2.5. Subsequently, some tissue sections were re-stained with hematoxylin-eosin for subsequent histological examinations.
- the morphological study of the histological preparations was carried out using CarIZeissAxioScopeAl (Germany) optical microscope at 25X, 50X, 100X, 200X and 400X magnifications.
- the microphotography of the samples was carried out using the AxioCamICc digital camera 1 and the AxioVisionRel.4.8 software (Germany). Morphometric measurements were performed using the AxioVisionRel.4.8 software (Germany).
- the number of goblet cells was counted in 1 mm of the respiratory zone of the epithelium.
- the appearance, severity of acute catarrhal rhinosinusitis, acute purulent rhinosinusitis and the occurrence of post-inflammatory goblet cell hyperplasia were assessed by assessing the degree of inflammatory lesions in different areas: vestibule, the respiratory and olfactory regions, and the paranasal sinuses.
- the degree of epithelial desquamation and lesions of the mucociliary glands was evaluated on a scale of 0 to 3, or:
- the degree of leukocyte and mononuclear infiltration was evaluated on a scale of 0 to 3, or:
- 1 - the number of mononuclear cells present in the examination zone is between 1 and 5;
- the number of mononuclear cells present in the examination zone is between 6 and 10; 3 - the number of mononuclear cells present in the examination zone is greater than 10.
- the mucous membrane of the nasal vestibule presented the typical histological structure, represented by a stratified squamous epithelium, gradually transformed into single respiratory epithelium.
- the inner nose was lined by two types of mucous membranes corresponding to the respiratory and olfactory regions.
- the mucosa of the respiratory tract consisted of ciliated prismatic pseudo-stratified epithelium, basement membrane, and underlying loose connective tissue.
- the epithelium of the respiratory tract was composed of ciliated epitheliocytes, basal cells and goblet cells. Histochemical staining with the blue alcian revealed the presence of large vesicles containing glucosamines in most goblet cells, which refers to the increased functional activity of these cells.
- the numerous sero-mucinous glands have been observed in the basement membrane.
- the olfactory region was located on the dorsal areas of the horns and on the roof of the nasal cavity.
- the olfactory epithelium consisted of support cells, olfactory cells and basal cells.
- Table 3 presents the morphometric data of the nasal mucosa.
- the degree of inflammatory injury in the respiratory tract was significantly low in the group receiving the onion peel extract
- goblet cells contain mucopolysaccharides that are stained by blue alcian.
- the number of goblet cells is increased during inflammation and should decrease after treatment. From the data obtained, it can be concluded that the proportion of these cells has increased drastically after the induction of inflammation. In general, this process is accompanied by infiltration of the mucosa. If there is no infiltration, but the number of goblet cells is high, this is considered post-inflammatory hyperplasia, which is a sign of improvement.
- Control group No macroscopic changes were observed in the control group. Microscopic examination revealed that administration of LPS triggered inflammation in the respiratory and olfactory areas. In the vestibular area, edema and leukocyte infiltration into the mucous membrane and underlying tissue were observed. In the respiratory tract, epithelial desquamation and atrophy of the mucous glands have been observed. Staining with the blue alcian revealed areas of clustered hyperplasia of goblet cells in the respiratory tract. Morphometric evaluation of the epithelium showed significant increase in goblet cells containing glucosamines and mucopolysaccharides relative to the total number of goblet cells.
- quercetin-shaped suspension could have a long-lasting effect compared to quercetin in solution.
- Quercetin -4'-glucoside (CGA) and protocatechic acid showed moderate activity against rhinosinusitis.
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FR1771251A FR3073737B1 (en) | 2017-11-23 | 2017-11-23 | THE TREATMENT METHOD FOR RHINOSINUSITIS |
PCT/EP2018/082241 WO2019101867A1 (en) | 2017-11-23 | 2018-11-22 | Quercetin-based composition for treating rhinosinusitis |
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US5977184A (en) * | 1995-09-15 | 1999-11-02 | Thorne Research, Inc. | Quercetin chalcone and methods related thereto |
CH694219A5 (en) * | 2000-02-10 | 2004-09-30 | Bobst Sa | A method of automatic registration of prints in a rotary machine and device for carrying out the method. |
CN102178675A (en) * | 2011-03-29 | 2011-09-14 | 深圳市药品检验所 | Application of quercetin and composition thereof to preparation of anti-hypoxia medicaments |
CA2799881A1 (en) | 2011-12-20 | 2013-06-20 | Water Pik, Inc. | Nasal wash solution |
AU2014205065A1 (en) * | 2013-01-14 | 2015-07-30 | Ent Associates Of Los Alamos, Llc | Honey nasal rinse |
US20150231112A1 (en) * | 2014-02-14 | 2015-08-20 | Brian Stanislaws Paul | Nasal and sinus wash compositions and methods |
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CN111615384A (en) | 2020-09-01 |
WO2019101867A1 (en) | 2019-05-31 |
FR3073737A1 (en) | 2019-05-24 |
FR3073737B1 (en) | 2020-10-09 |
US20210000787A1 (en) | 2021-01-07 |
US11351145B2 (en) | 2022-06-07 |
EA202090998A1 (en) | 2020-09-10 |
JP2021504325A (en) | 2021-02-15 |
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