Análise químico-farmacêutica de cloridrato de ciprofloxacino em solução oftálmica
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Data
2009-02-02
Autores
Cazedey, Edith Cristina Laignier [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O cloridrato de ciprofloxacino, um antibacteriano quinolônico, apresenta amplo espectro de ação e é eficaz in vitro contra praticamente todos os patógenos Gram-negativos, incluindo Pseudomonas aeruginosa. Mostra-se também eficaz contra microrganismos Gram-positivos, como estafilococos e estreptococos. A importância de desenvolver e validar métodos analíticos para este fármaco é justificada por seu potencial terapêutico, grande emprego em terapias microbianas e baixo custo, assim como pelo conhecimento de que a baixa qualidade dos produtos anti-infecciosos está relacionada ao desenvolvimento de cepas resistentes, como consequência da administração de doses subterapêuticas. Por tal razão, é de enorme importância o desenvolvimento de métodos analíticos eficazes e confiáveis para o controle de qualidade dos medicamentos comercializados. Neste trabalho foram desenvolvidos métodos de análise para o cloridrato de ciprofloxacino em solução oftálmica. Os métodos desenvolvidos e validados foram: (i) doseamento microbiológico, método turbidimétrico na faixa de concentração de 14,0 a 56,0 μg/mL, utilizando Staphylococcus epidermidis ATCC 12228 IAL 2150, com exatidão de 99,71% e teor de 102,27%; (ii) método espectrofotométrico na região do UV a 275 nm com faixa de concentração de 2,0 a 7,0 μg/mL, utilizando água como solvente, com exatidão de 101,51% e teor de 99,79%; (iii) método espectrofotométrico derivativo na região do visível a 386,4 nm, na primeira derivada, com faixa de concentração de 50,0 a 100,0 μg/mL, utilizando cloreto férrico 1,0% como reagente, com exatidão de 99,83% e teor de 106,72%; (iv) método por cromatografia líquida de alta eficiência com detector UV a 275 nm, com fase móvel composta por ácido acético 2,5% v/v, metanol e acetonitrila (70:15:15, v/v/v) e faixa de concentração de 1,0 a 6,0 μg/mL, exatidão...
Ciprofloxacin hydrochloride, a quinolone antibiotic, presents a wider spectrum of activity and is effective against practically all Gram-negative pathogens, including Pseudomonas aeruginosa. It is potent against Grampositive microorganisms, as Staphylococcus and Streptococcus. Analytical methods for quantitative determination of ciprofloxacin hydrochloride is important due to its therapeutic potential, wide use in antimicrobial therapy and low cost. Moreover, it is known that the poor quality antibiotic product is direct related development of resistant strains, as consequence of subtherapeutic doses administration. Thus, it is important to develop efficient analytical methods for quality control commercialized products. In this work, analytical methods for determination of ciprofloxacin hydrochloride were validated: (i) microbiological assay, turbidimetric method at concentration range 14.0 to 56.0 μg/mL, using Staphylococcus epidermidis ATCC 12228 IAL 2150 as indicator microorganism, accuracy 99.71% and quantitation of 102.27; (ii) UV spectrophotometry at 275 nm with concentration range of 2.0 to 7.0 μg/mL, using water as solvent, with accuracy of 101.51% and quantitation of 99.79%; (iii) Derivative visible spectrophotometric method at 386.4 nm, in first derivate, with concentration range of 50.0 a 100.0 μg/mL, using 1.0% ferric chloride as reagent, with accuracy of 99.83% and quantitation of 106.72%; (iv) HPLC method with UV detector at 275 nm using 2.5 M acetic acid (v/v), methanol and acetonitrile (70: 15: 15, v/v/v) as mobile phase and concentration range of 1.0 to 6.0 μg/mL, accuracy of 100.11%, quantitation 103.25% and mean retention time of 2.6 minutes; (v) Indirect titrimetric method using bromate/bromide solution in acid medium as reagent in concentration range of 1.0 to 11.0 mg/mL, with accuracy of 100.28% and quantitation of 98.97%.
Ciprofloxacin hydrochloride, a quinolone antibiotic, presents a wider spectrum of activity and is effective against practically all Gram-negative pathogens, including Pseudomonas aeruginosa. It is potent against Grampositive microorganisms, as Staphylococcus and Streptococcus. Analytical methods for quantitative determination of ciprofloxacin hydrochloride is important due to its therapeutic potential, wide use in antimicrobial therapy and low cost. Moreover, it is known that the poor quality antibiotic product is direct related development of resistant strains, as consequence of subtherapeutic doses administration. Thus, it is important to develop efficient analytical methods for quality control commercialized products. In this work, analytical methods for determination of ciprofloxacin hydrochloride were validated: (i) microbiological assay, turbidimetric method at concentration range 14.0 to 56.0 μg/mL, using Staphylococcus epidermidis ATCC 12228 IAL 2150 as indicator microorganism, accuracy 99.71% and quantitation of 102.27; (ii) UV spectrophotometry at 275 nm with concentration range of 2.0 to 7.0 μg/mL, using water as solvent, with accuracy of 101.51% and quantitation of 99.79%; (iii) Derivative visible spectrophotometric method at 386.4 nm, in first derivate, with concentration range of 50.0 a 100.0 μg/mL, using 1.0% ferric chloride as reagent, with accuracy of 99.83% and quantitation of 106.72%; (iv) HPLC method with UV detector at 275 nm using 2.5 M acetic acid (v/v), methanol and acetonitrile (70: 15: 15, v/v/v) as mobile phase and concentration range of 1.0 to 6.0 μg/mL, accuracy of 100.11%, quantitation 103.25% and mean retention time of 2.6 minutes; (v) Indirect titrimetric method using bromate/bromide solution in acid medium as reagent in concentration range of 1.0 to 11.0 mg/mL, with accuracy of 100.28% and quantitation of 98.97%.
Descrição
Palavras-chave
Espectrofometria, Cloridrato de ciprofloxacino, Fluorquinolonas, Ciprofloxacin hydrochloride, Microbiological assay, Spectrophotometry, High performance liquid chromatography
Como citar
CAZEDEY, Edith Cristina Laignier. Análise químico-farmacêutica de cloridrato de ciprofloxacino em solução oftálmica. 2009. 146 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Farmacêuticas, 2009.