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WO2018009998A1 - Antimicrobial mucosal formulation and use of the antimicrobial mucosal formulation - Google Patents

Antimicrobial mucosal formulation and use of the antimicrobial mucosal formulation Download PDF

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Publication number
WO2018009998A1
WO2018009998A1 PCT/BR2017/050189 BR2017050189W WO2018009998A1 WO 2018009998 A1 WO2018009998 A1 WO 2018009998A1 BR 2017050189 W BR2017050189 W BR 2017050189W WO 2018009998 A1 WO2018009998 A1 WO 2018009998A1
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Prior art keywords
antimicrobial
mucosal
formulation according
mucosal formulation
silver
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PCT/BR2017/050189
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French (fr)
Portuguese (pt)
Inventor
Luiz Francisco Pianowski
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Luiz Francisco Pianowski
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Publication of WO2018009998A1 publication Critical patent/WO2018009998A1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K33/00Medicinal preparations containing inorganic active ingredients
    • A61K33/24Heavy metals; Compounds thereof
    • A61K33/38Silver; Compounds thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K47/00Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
    • A61K47/30Macromolecular organic or inorganic compounds, e.g. inorganic polyphosphates
    • A61K47/36Polysaccharides; Derivatives thereof, e.g. gums, starch, alginate, dextrin, hyaluronic acid, chitosan, inulin, agar or pectin
    • A61K47/38Cellulose; Derivatives thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics

Definitions

  • the present invention relates to a mucosal adherent antimicrobial mucosal formulation comprising silver particles, particularly silver micro or nanoparticles, for the prevention or treatment of mucosal disorders. It further relates to the use of such a formulation.
  • Mouth and nose represent the ways in which various conditions, from common flu to H1N1, and even bacterial and fungal infections settle in the human body.
  • An emblematic case allowing contamination of the mucous membranes of the nose and mouth is one that occurs where there is crowding of people, particularly indoors. Prevention of infections or contamination of any kind is sought by large numbers of people using cloth masks. Typical examples would be air travel, or hospital areas that visitors have to travel through.
  • Such masks generate discomfort in use, as well as disrupt the aesthetics, producing after use a material that requires treatment or burning before disposal.
  • Silver is one of the safest antimicrobial agents compared to some organic antimicrobial agents, with important antimicrobial effect and low toxicity to human cells.
  • silver particles of the formulation of the invention have typical sizes between 0.5 and 500 nm, particularly between 2 and 100 nm, more particularly between 10 and 50 nm.
  • silver is used in the formulation of the invention in the form of colloidal silver.
  • nanoprost such particles are termed nanoprost, without imposing any limitations beyond those contained in the appended claims.
  • the formulation of the invention during use favors the formation of silver ions.
  • the silver content in the formulation of the invention is in the range of 0.1 ppm to 2000 ppm per gram.
  • the formulation of the invention is in any form known to the person skilled in the art, suitable for contact with human mucous membranes, for example cream, gel, liquid, ointment, emulsion, dispersion, mouthwash, spray, foam, aerosol.
  • the formulation of the invention contains agents of mucosal adhesion, that is, a substrate compatible with mucosal contact, which has some degree of adherence to it, helping to fix the nanoprote in the vicinity of the mucosa.
  • Mucosal adhesion agents suitable for the invention may be aqueous or non-aqueous polymeric or non-polymeric substrates, for example chosen from polyethylene glycol, cellulose derivatives (methylcellulose, carboxymethylcellulose, hydroxypropyl methylcellulose, croscarmellose, etc.) polyvinyl pyrrolidone, pectin, hyaluronic acid , chitosan, polyvinyl alcohol, sodium alginate, polyorganosiloxane, polysaccharides, gelatin, gum tragacanth, xanthan gum, caraya gum, polyacrylic acid, soluble starch.
  • adhesion agents sometimes called bioadhesive or mucoadhesive, may be of plant or animal origin, or synthetic. May provide immediate, prolonged or delayed release of nanoprost.
  • the formulation of the invention may contain excipients adapted for use, for example rheological modifier, pH modifier, wetting, coloring, flavoring, surfactant, diluent, preservative, and any other known to the person skilled in the art.
  • the formulation of the invention may contain other topically desired actives such as other antimicrobials (antibacterial, antifungal, antiviral), anti-inflammatory, analgesic, anesthetic, hormone, etc.
  • other topically desired actives such as other antimicrobials (antibacterial, antifungal, antiviral), anti-inflammatory, analgesic, anesthetic, hormone, etc.
  • Another aspect of the invention is the use of formulation with the characteristics described above to prepare a product useful in preventing or treating mucosal disorders, particularly oral, nasal and vaginal mucosa.
  • the formulation of the invention may be indirectly dispensed to the mucosa, which is first applied to a suitable substrate such as cloth or cotton and then applied to the mucosa.
  • the following table shows a formulation according to the invention in the form of a topical antibacterial cream.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Medicinal Chemistry (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oncology (AREA)
  • Communicable Diseases (AREA)
  • Medicinal Preparation (AREA)

Abstract

The present invention relates to an anti-microbial mucosal formulation that adheres to mucous membranes and comprises silver particles, in particular silver microparticles or nanoparticles, and is aimed at the prevention or treatment of diseases affecting the mucous membranes. The invention further relates to the use of this formulation.

Description

FORMULAÇÃO MUCOSAL AN IMICROBIANA E USO DE FORMULAÇÃO MUCOSAL ANTIMICROBIANA  ANIMICROBIAN MUCOSAL FORMULATION AND USE OF ANTIMICROBIAN MUCOSAL FORMULATION
A presente invenção refere-se a uma formulação mucosal antimicrobiana aderente a mucosas, compreendendo partículas de prata, particularmente micro ou nanopartícuias de prata, visando prevenção ou tratamento de afecções nas mucosas. Refere-se ainda ao uso de tal formulação.  The present invention relates to a mucosal adherent antimicrobial mucosal formulation comprising silver particles, particularly silver micro or nanoparticles, for the prevention or treatment of mucosal disorders. It further relates to the use of such a formulation.
ESTADO DA TÉCNICA TECHNICAL STATE
É sobejamente conhecido que as mucosas do corpo humano são a porta de entrada para muitas doenças. Boca e nariz, por exemplo, representam as vias pelas quais várias afecções, desde gripe comum, até HlNl, e mesmo infecções bacterianas e fúngicas se instalam no corpo humano.  It is well known that the mucous membranes of the human body are the gateway to many diseases. Mouth and nose, for example, represent the ways in which various conditions, from common flu to H1N1, and even bacterial and fungal infections settle in the human body.
Já no caso da mucosa vaginal, trata-se de local onde se instalam doenças venéreas, por exemplo.  In the case of the vaginal mucosa, this is the place where venereal diseases occur, for example.
Um caso emblemático permitindo contaminação pelas mucosas de nariz e boca é aquele que ocorre onde há aglomeração de pessoas, particularmente em ambientes fechados. A prevenção de infeções ou de algum tipo de contaminação é buscada por grande número de pessoas com a utilização de máscaras de pano. Exemplos típicos seriam viagens de avião, ou áreas hospitalares que visitantes têm que percorrer.  An emblematic case allowing contamination of the mucous membranes of the nose and mouth is one that occurs where there is crowding of people, particularly indoors. Prevention of infections or contamination of any kind is sought by large numbers of people using cloth masks. Typical examples would be air travel, or hospital areas that visitors have to travel through.
Tais máscaras geram desconforto no uso, além de atrapalhar a estética, produzindo após seu uso um material que exige tratamento ou queima antes do descarte .  Such masks generate discomfort in use, as well as disrupt the aesthetics, producing after use a material that requires treatment or burning before disposal.
DESCRIÇÃO DA INVENÇÃO Em vista de tais situações, foi desenvolvido uma formulação simples e eficaz, que é uma formulação antimicrobiana mucosal, caracterizada por compreender um agente de adesão à mucosa e partículas de prata. DESCRIPTION OF THE INVENTION In view of such situations, a simple and effective formulation, which is a mucosal antimicrobial formulation, characterized in that it comprises a mucosal adhesion agent and silver particles has been developed.
A prata é um dos mais seguros agentes antimicrobianos , em comparação com alguns agentes orgânicos antimicrobianos, com efeito ant imicrobiano importante e baixa toxicidade para as células humanas .  Silver is one of the safest antimicrobial agents compared to some organic antimicrobial agents, with important antimicrobial effect and low toxicity to human cells.
Conforme sentido aqui utilizado, as partículas de prata da formulação da invenção têm tamanhos típicos entre 0,5 e 500 nm, particularmente entre 2 e lOOnm, mais particularmente entre 10 e 50nm. Dentro de uma realização particular, a prata é utilizada na formulação da invenção sob forma de prata coloidal. Apenas por facilidade de exposição, neste texto tais partículas são denominadas nanoprata, sem por isso impor quaisquer limitações além daquelas contidas nas reivindicações anexas.  As used herein, silver particles of the formulation of the invention have typical sizes between 0.5 and 500 nm, particularly between 2 and 100 nm, more particularly between 10 and 50 nm. Within a particular embodiment, silver is used in the formulation of the invention in the form of colloidal silver. Just for ease of exposure, in this text such particles are termed nanoprost, without imposing any limitations beyond those contained in the appended claims.
De forma preferencial, sem excluir qualquer outra, a formulação da invenção, durante o uso, favorece a formação de ions de prata.  Preferably, without excluding any other, the formulation of the invention during use favors the formation of silver ions.
De forma preferencial, sem excluir qualquer outra, o teor de prata na formulação da invenção encontra-se na faixa de 0,1 ppm a 2000 ppm por grama.  Preferably, without excluding any other, the silver content in the formulation of the invention is in the range of 0.1 ppm to 2000 ppm per gram.
A formulação da invenção apresenta-se sob quaisquer formas conhecidas do homem da técnica, adequadas ao contato das mucosas humanas, por exemplo creme, gel, liquido, unguento, emulsão, dispersão, colutório, spray, espuma, aerossol.  The formulation of the invention is in any form known to the person skilled in the art, suitable for contact with human mucous membranes, for example cream, gel, liquid, ointment, emulsion, dispersion, mouthwash, spray, foam, aerosol.
A formulação da invenção contém agentes de adesão à mucosas, ou seja, substrato compatível com o contato à mucosa, que tenha algum grau de aderência à mesma, ajudando a fixar a nanoprata na proximidade da mucosa . The formulation of the invention contains agents of mucosal adhesion, that is, a substrate compatible with mucosal contact, which has some degree of adherence to it, helping to fix the nanoprote in the vicinity of the mucosa.
Agentes de adesão à mucosa adequados à invenção podem ser substratos poliméricos ou não poliméricos, aquosos ou não aquosos, por exemplo escolhidos dentre polietileno glicol, derivados de celulose (metilcelulose, carboximetilcelulose, hidroxipropilmetilcelulose , croscarmelose, etc.) polivinil pirrolidona, pectina, ácido hialurônico, quitosana, álcool polivinílico, alginato de sódio, poliorganosiloxano, polissacarídeos , gelatina, goma tragacanto, goma xantana, goma caraia, ácido poliacrílico, amido solúvel. Tais agentes de adesão, as vezes chamados de bioadesivos ou mucoadesivos , podem ser de origem vegetal ou animal, ou sintéticos. Podem prover liberação da nanoprata de forma imediata, prolongada ou adiada.  Mucosal adhesion agents suitable for the invention may be aqueous or non-aqueous polymeric or non-polymeric substrates, for example chosen from polyethylene glycol, cellulose derivatives (methylcellulose, carboxymethylcellulose, hydroxypropyl methylcellulose, croscarmellose, etc.) polyvinyl pyrrolidone, pectin, hyaluronic acid , chitosan, polyvinyl alcohol, sodium alginate, polyorganosiloxane, polysaccharides, gelatin, gum tragacanth, xanthan gum, caraya gum, polyacrylic acid, soluble starch. Such adhesion agents, sometimes called bioadhesive or mucoadhesive, may be of plant or animal origin, or synthetic. May provide immediate, prolonged or delayed release of nanoprost.
A formulação da invenção pode conter excipientes adaptados ao uso, por exemplo modificador reológico, modificador de pH, molhante, corante, flavorizante , surfactante, diluente, conservante, e quaisquer outros conhecidos do homem da técnica.  The formulation of the invention may contain excipients adapted for use, for example rheological modifier, pH modifier, wetting, coloring, flavoring, surfactant, diluent, preservative, and any other known to the person skilled in the art.
A formulação da invenção pode conter outros ativos que se deseje dispensar topicamente, como outros antimicrobianos ( antibacteriano, antifúngico, antiviral) , anti-inflamatórios , analgésicos, anestésicos, hormônios, etc.  The formulation of the invention may contain other topically desired actives such as other antimicrobials (antibacterial, antifungal, antiviral), anti-inflammatory, analgesic, anesthetic, hormone, etc.
Um outro aspecto da invenção é o uso da formulação com as características acima descritas para preparar produto útil na prevenção ou tratamento de afecções de mucosas, particularmente mucosas oral, nasal e vaginal. Another aspect of the invention is the use of formulation with the characteristics described above to prepare a product useful in preventing or treating mucosal disorders, particularly oral, nasal and vaginal mucosa.
Se necessário, a formulação da invenção pode ser dispensada à mucosa de forma indireta, qual seja, primeiramente aplicada a um substrato adequado, como pano ou algodão, e em seguida aplicada à mucosa.  If necessary, the formulation of the invention may be indirectly dispensed to the mucosa, which is first applied to a suitable substrate such as cloth or cotton and then applied to the mucosa.
São dados a seguir exemplos de realização da invenção, sem impor qualquer limitação ao escopo da mesma além do contido nas reivindicações anexas.  The following are examples of embodiments of the invention without imposing any limitation on the scope of the invention beyond that contained in the appended claims.
EXEMPLOS EXAMPLES
EXEMPLO 1 - Creme antibacteriano tópico EXAMPLE 1 - Topical Antibacterial Cream
A tabela a seguir mostra uma formulação conforme a invenção, sob forma de creme antibacteriano tópico  The following table shows a formulation according to the invention in the form of a topical antibacterial cream.
Figure imgf000005_0001
Figure imgf000005_0001
* Carbopol 940, produto fornecido pela empresa Lubrizol  * Carbopol 940, product supplied by the company Lubrizol
** Natrosol 250 HHR, fornecido pela empresa Ashland *** SilverClean 800, fornecido pela empresa Ética do Brasil ** Natrosol 250 HHR, provided by Ashland *** SilverClean 800, provided by Brazil
**** Baycusan C1000 , fornecido pela empresa Covestro Modo de preparação  **** Baycusan C1000, provided by the company Covestro Preparation
Misturar os ingredientes 1 a 5 até homogeneização. Acertar o pH com trietanolamina a aproximadamente 6,3. Adicionar a prata coloidal (ingrediente 6) com baixa velocidade de dispersão, por exemplo 500 rpm.  Mix ingredients 1 to 5 until smooth. Adjust the pH with triethanolamine to approximately 6.3. Add colloidal silver (ingredient 6) with low dispersion speed, eg 500 rpm.
EXEMPLO 2 - Spray Ou Aerossol Oral  EXAMPLE 2 - Oral Spray Or Aerosol
A tabela a seguir mostra uma formulação conforme a invenção, sob forma de spray ou aerossol oral .  The following table shows a formulation according to the invention in oral spray or aerosol form.
Figure imgf000006_0001
Figure imgf000006_0001
* Carbopol 940, produto fornecido pela empresa Lubrizol * Carbopol 940, product supplied by the company Lubrizol
** Natrosol 250 HHR, fornecido pela empresa Ashland *** SilverClean 800, fornecido pela empresa Ética do Brasil  ** Natrosol 250 HHR, supplied by Ashland *** SilverClean 800, provided by Ethics of Brazil
**** Baycusan C1000 , fornecido pela empresa Covestro MODO DE PREPARAÇÃO  **** Baycusan C1000, provided by Covestro PREPARATION
Misturar os ingredientes 1 a 5 até homogeneização. Acertar o pH com trietanolamina a aproximadamente 6,3. Adicionar a prata coloidal (ingrediente 6) com baixa velocidade de dispersão, por exemplo 500 rpm. Mix ingredients 1 through 5 until homogenization. Adjust the pH with triethanolamine to approximately 6.3. Add colloidal silver (ingredient 6) with low dispersion speed, eg 500 rpm.
O técnico no assunto, em vista das informações aqui apresentadas, assim como os exemplos, saberá realizar a invenção de modo distinto do revelado, mas desempenhando a mesma ou substancialmente a mesma função par atingir o mesmo ou substancialmente o mesmo resultado, portanto dentro do escopo da invenção definido nas reivindicações anexas.  The person skilled in the art, in view of the information presented herein, as well as the examples, will know how to carry out the invention differently from that disclosed, but performing the same or substantially the same function to achieve the same or substantially the same result, therefore within the scope. of the invention defined in the appended claims.

Claims

REIVINDICAÇÕES
1. Formulação mucosal antimicrobiana caracterizada pelo fato de compreender um agente de adesão à mucosa e partículas de prata.  1. Antimicrobial mucosal formulation characterized by the fact that it comprises a mucosal adhesion agent and silver particles.
2. Formulação mucosal antimicrobiana de acordo com a reivindicação 1 caracterizada pelo fato de que as partículas de prata têm tamanhos entre 0,5 e 500 nm, particularmente 2 e lOOnm, mais particularmente 10 e 50nm.  Antimicrobial mucosal formulation according to claim 1, characterized in that the silver particles have sizes between 0.5 and 500 nm, particularly 2 and 100 nm, more particularly 10 and 50 nm.
3. Formulação mucosal antimicrobiana de acordo com a reivindicação 1 caracterizada pelo fato de as partículas de prata estão presentes sob forma de prata coloidal.  Antimicrobial mucosal formulation according to Claim 1, characterized in that the silver particles are present in colloidal silver form.
4. Formulação mucosal antimicrobiana de acordo com a reivindicação 1 caracterizada pelo fato de que a formulação contém 0,1 ppm a 2000 ppm de prata por grama.  Antimicrobial mucosal formulation according to claim 1, characterized in that the formulation contains 0.1 ppm to 2000 ppm silver per gram.
5. Formulação mucosal antimicrobiana de acordo com a reivindicação 1 caracterizada pelo fato de que o dito agente de adesão à mucosa é escolhido dentre substratos polimérico, não polimérico, aquoso, não aquoso, de origem vegetal, de origem animal ou sintético .  Antimicrobial mucosal formulation according to claim 1, characterized in that said mucosal adhesion agent is chosen from polymeric, non-polymeric, aqueous, non-aqueous substrates of plant origin, animal or synthetic origin.
6. Formulação mucosal antimicrobiana de acordo com a reivindicação 1 caracterizada pelo fato de que o dito agente de adesão à mucosa é escolhido dentre polietileno glicol, derivados de celulose (metilcelulose , carboximeti1celulose , hidroxipropilmetilcelulose , croscarmelose, etc.) polivinil pirrolidona, pectina, ácido hialurônico, quitosana, álcool polivinílico, alginato de sódio, poliorganosiloxano, polissacarideos, gelatina, goma tragacanto, goma xantana, goma caraia, ácido poliacrilico, amido solúvel. Antimicrobial mucosal formulation according to claim 1, characterized in that said mucosal adhesion agent is chosen from polyethylene glycol, cellulose derivatives (methylcellulose, carboxymethylcellulose, hydroxypropyl methylcellulose, croscarmellose, etc.) polyvinyl pyrrolidone, pectin, acid hyaluronic, chitosan, polyvinyl alcohol, sodium alginate, polyorganosiloxane, polysaccharides, gelatin, tragacanth gum, xanthan gum, caraya gum, polyacrylic acid, soluble starch.
7. Formulação mucosal antimicrobiana de acordo com a reivindicação 1 caracterizada pelo fato de que se apresenta sob forma de creme, gel, liquido, unguento, emulsão, dispersão, colutório, spray, espuma ou aerossol.  Antimicrobial mucosal formulation according to claim 1, characterized in that it is in the form of a cream, gel, liquid, ointment, emulsion, dispersion, mouthwash, spray, foam or aerosol.
8. Formulação mucosal antimicrobiana de acordo com a reivindicação 1 caracterizada pelo fato de que compreende adicionalmente outros ativos, distintos da prata, escolhidos preferencialmente dentre antibacteriano, antifúngico, antiviral, anti- inflamatório, analgésico, anestésico, hormônio.  Antimicrobial mucosal formulation according to claim 1, characterized in that it further comprises other non-silver actives, preferably chosen from antibacterial, antifungal, antiviral, anti-inflammatory, analgesic, anesthetic, hormone.
9. Formulação mucosal antimicrobiana de acordo com a reivindicação 1 caracterizada pelo fato de que compreende ao menos um excipiente.  Antimicrobial mucosal formulation according to claim 1, characterized in that it comprises at least one excipient.
10. Formulação mucosal antimicrobiana de acordo com a reivindicação 9 caracterizada pelo fato de que compreende um ou mais excipientes escolhidos dentre modificador reológico, modificador de pH, molhante, corante, flavorizante , surfactante, diluente, conservante.  Antimicrobial mucosal formulation according to claim 9, characterized in that it comprises one or more excipients chosen from rheological modifier, pH modifier, wetting, coloring, flavoring, surfactant, diluent, preservative.
11. Uso de formulação mucosal antimicrobiana conforme uma qualquer das reivindicações 1 a 10 caracterizado pelo fato de ser para preparar produto útil na prevenção ou tratamento de afecções de mucosas .  Use of an antimicrobial mucosal formulation as claimed in any one of claims 1 to 10 for preparing a product useful in preventing or treating mucosal disorders.
12. Uso de formulação mucosal antimicrobiana conforme a reivindicação 11 caracterizado pelo fato que as ditas mucosas são oral, nasal ou vaginal. 12. Use of antimicrobial mucosal formulation Claim 11, characterized in that said mucous membranes are oral, nasal or vaginal.
PCT/BR2017/050189 2016-07-14 2017-07-14 Antimicrobial mucosal formulation and use of the antimicrobial mucosal formulation WO2018009998A1 (en)

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US20030185889A1 (en) * 2002-03-27 2003-10-02 Jixiong Yan Colloidal nanosilver solution and method for making the same
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