BRPI0704816B1 - Formulação lipossomal com o fármaco nistatina - Google Patents
Formulação lipossomal com o fármaco nistatina Download PDFInfo
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- BRPI0704816B1 BRPI0704816B1 BRPI0704816-5A BRPI0704816A BRPI0704816B1 BR PI0704816 B1 BRPI0704816 B1 BR PI0704816B1 BR PI0704816 A BRPI0704816 A BR PI0704816A BR PI0704816 B1 BRPI0704816 B1 BR PI0704816B1
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- Prior art keywords
- drug
- nystatin
- liposomal
- liposomal formulation
- formulation
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- 238000009472 formulation Methods 0.000 title claims abstract description 50
- 229940079593 drug Drugs 0.000 title claims abstract description 49
- VQOXZBDYSJBXMA-RKEBNKJGSA-N nystatin a1 Chemical compound O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@@H]1OC1/C=C/C=C/C=C/C=C/CC/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)CC(O)CC(O)CC(O)CCC(O)C(O)C[C@](O)(CC(O)C2C(O)=O)OC2C1 VQOXZBDYSJBXMA-RKEBNKJGSA-N 0.000 title claims description 5
- VQOXZBDYSJBXMA-NQTDYLQESA-N nystatin A1 Chemical compound O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/CC/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 VQOXZBDYSJBXMA-NQTDYLQESA-N 0.000 claims abstract description 41
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- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims (7)
- FORMULAÇÃO LIPOSSOMAL COM O FÁRMACO NISTATINA caracterizada por ser composta em percentagem molar de 70% de Fosfatidilcolina hidrogenada (HSPC); 20% de Colesterol; 10% de Diestearoilfosfatidilglicerol (DSPG), 1,3% de 2,6 - bis (1,1 -dimetil) - 4 - metil fenol (BHT) em relação à massa de fármaco na formulação e 7% de Nistatina em relação à concentração de lipídio, em tampão succinato 0,02 mol.L-1; pH 5,6 em salina.
- FORMULAÇÃO LIPOSSOMAL COM O FÁRMACO NISTATINA, de acordo com a reivindicação 1, deu origem a preparação designadas Ll, caracterizada por ser hidratada com tampão succinato 0,02 mol.L-1; pH 5,6 em salina a 55°C, apresentando uma eficiência de encapsulação de Nistatina de 28,9 + 1,0%, teor (%) fosfolipídios totais de; 63,3 ± 0,1%, diâmetro médio das vesículas lipossomais de 64,3 nm e potencial zeta médio de 35,31 ± 1,54 mV.
- FORMULAÇÃO LIPOSSOMAL COM O FÁRMACO NISTATINA, de acordo com a reivindicação 1, deu origem a preparação designadas L2, caracterizada por ser hidratada com tampão succinato 0,02 mol.L-1; pH 5,6 em salina a 60°C, apresentando uma eficiência de encapsulação de Nistatina de 37, 3 ± 1,7%, teor (%) fosfolipídios totais de 57,7 ± 0,1, diâmetro médio das vesículas lipossomais de 68,1 nm e potencial zeta médio de 42,50 ± 0,8 mV.
- FORMULAÇÃO LIPOSSOMAL COM O FÁRMACO NISTATINA, de acordo com as reivindicações 1, 2 e 3, obtida pelo método do filme seco, caracterizada por ser a Nistatina e os lipídios HSPC, colesterol e DSPG dissolvidos em clorofórmio:metanol (1:1; v:v), numa razão molar entre os lipídios de 7:2:1, numa concentração de 15 mM e 1 mM de fármaco; com a utilização do conservante BHT, numa concentração de 1,3% em relação à massa de fármaco utilizado na formulação e os solventes evaporados em rotaevaporador à pressão reduzida, em temperatura de 55°C.
- FORMULAÇÃO LIPOSSOMAL COM O FÁRMACO NISTATINA, sendo o processo para obtenção dos lipossomas multilamelares caracterizado por ser o filme seco obtido na reivindicação 4, mantido por pelo menos 1 hora sob vácuo, para eliminação de resíduos de solventes orgânicos e hidratado nas temperaturas 55°C a 60°C, sendo empregado o tampão succinato (0,02 mol.L-1; pH 5,6) em salina como meio de hidratação. O referido meio de hidratação é adicionado no filme seco em três etapas, com velocidade de agitação designadas: lenta (20rpm), média (160rpm) e rápida (280rpm), cada uma com uma duração de 20 minutos.
- FORMULAÇÃO LIPOSSOMAL COM O FÁRMACO NISTATINA, de acordo com as reivindicações 4 e 5, os lipossomas multilamelares tratados para obtenção de lipossomas de menores tamanhos ou unilamelares caracterizado pelo processo descritos pelos itens abaixo:
- - ultracentigugação a 112.240,71 x g (quando usados 5ml) a 20°C/2h, para eliminação de eventuais compostos de degradação do fármaco (sobrenadante);
- - em seguida, o pélete resultante é ressuspenso a 5ml;
- - a suspensão lipossomal é sonicada em sonicadore de ponte por 10 minutos (3, 3 e 4 min, com pausa de lmin) a uma potência de 40W, mantendo as amostras em banho de gelo, obtendo-se a suspensão lipossomal unilamelar;
- - os lipossomas unilamelares são centrifugados a 9438,65 x g/10min/10°C para retirada das partículas de titânio e fármaco livre;
- - o sobrenadante contendo a suspensão de lipossomas de diâmetro pequeno, com o fármaco encapsulado passa por recozimento a 60°C/20 min.
- FORMULAÇÃO LIPOSSOMAL COM O FÁRMACO NISTATINA, de acordo com as reivindicações 1, 2, 3, 4, 5 e 6, caracterizada pelo uso da Nistatina lipossomada, aplicada na forma parenteral, aos indivíduos portadores de micoses sistêmicas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0704816A BRPI0704816B8 (pt) | 2007-12-17 | 2007-12-17 | formulação lipossomal com o fármaco nistatina |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0704816A BRPI0704816B8 (pt) | 2007-12-17 | 2007-12-17 | formulação lipossomal com o fármaco nistatina |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| BRPI0704816A2 BRPI0704816A2 (pt) | 2009-08-11 |
| BRPI0704816B1 true BRPI0704816B1 (pt) | 2020-09-24 |
| BRPI0704816B8 BRPI0704816B8 (pt) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BRPI0704816A BRPI0704816B8 (pt) | 2007-12-17 | 2007-12-17 | formulação lipossomal com o fármaco nistatina |
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| Country | Link |
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| BR (1) | BRPI0704816B8 (pt) |
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2007
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| Publication number | Publication date |
|---|---|
| BRPI0704816A2 (pt) | 2009-08-11 |
| BRPI0704816B8 (pt) | 2022-07-19 |
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