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Master's Dissertation
DOI
https://doi.org/10.11606/D.9.2015.tde-17062015-150742
Document
Author
Full name
Antonio Marcos Callejo de Souza
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2015
Supervisor
Committee
Prado, María Segunda Aurora (President)
Galdos, Angel Arturo Gaona
Lourenço, Felipe Rebello
Title in Portuguese
Métodos eletroforéticos e cromatográficos aplicados para a determinação simultânea de fármacos hipolipidêmicos em medicamentos
Keywords in Portuguese
Cromatografia eletrocinética micelar
Ezetimiba
HPLC
Sinvastatina
Validação analítica
Abstract in Portuguese
A ezetimiba e a sinvastatina são fármacos hipolipidêmicos. A ezetimiba pertence à nova classe das 2 - azetidinona, inibidores e bloqueadores do colesterol intestinal. A sinvastatina pertence à classe dos inibidores competitivos da hidroxi-3-metilglutarilcoenzima A redutase (HMG-CoA), que é a última etapa regulada na síntese do colesterol. O objetivo do trabalho foi desenvolver e validar métodos por cromatografia liquida de alta eficiência (HPLC) e eletroforese capilar (CE), rápidos, seletivos e confiáveis para determinação dos hipolipidêmicos em formulações farmacêuticas. A separação cromatográfica foi realizada usando coluna Nano separation technologies (NST) Cianopropril (CN) (150 mmx 4,6 mm, com partícula 3,5 µm), e eluição isocrático usando água purificada: acetonitrila (48:52, v/v); vazão 0,8 mL/min e volume de injeção de 20 µL. A temperatura da coluna foi de 35 ºC e a detecção foi realizada com detector na região do UV em 238 nm. O método por cromatografia eletrocinética micelar (MEKC) foi desenvolvido utilizando capilar de sílica fundida 30 cm (comprimento efetivo) x 50 µm d.i. e eletrólito constituído de tetraborato de sódio (TBS) 20 mmol L-1: dodecil sulfato de sódio (SDS) 30 mmol L-1, pH 9,0 ajustado com 10% ácido fosfórico: acetonitrila 12% v/v. O tempo de injeção foi de 3 segundos com pressão hidrodinâmica de 20 mbar, voltagem aplicada de 30 kV e detecção no UV em 238 nm. Os métodos analíticos foram validados de acordo com os requerimentos vigentes da ANVISA, ICH e Farmacopéia Americana. Portanto, os métodos propostos demonstraram ser lineares, precisos, exatos e adequados para quantificação simultânea da ezetimiba e sinvastatina em formas farmacêuticas sólidas.
Title in English
Electrophoretic and chromatographic methods apllied for the simultaneous determination of hypolipidemic drugs in medicines.
Keywords in English
Analytical validation
Ezetimbe
HPLC
Micellar electrokinetic chromatography
Simvastatin
Abstract in English
Ezetimibe and simvastatin are hipolipidemic drugs. Ezetimibe belongs to a new class of 2 - azetidione, inhibitors and blockers of intestinal chrolesterol. Simvastatin belongs a class of competitive inhibitors of 3-hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase, which is the last regulated step in the cholesterol synthesis. The aim of this project was to develop and validate fast, selective and reliable chromatographic and electrophoretic methods, to determine hypolipidemic drugs in pharmaceutical formulations. The chromatographic separation was carried out on a Nano separation technologies (NST) Cyanpropyl (CN) (150 mm x 4,6 mm, 3,5 µm), isocratic elution using purified water: acetonitrila (48:52 v/v), the flow rate was 0,8 mL/min and the injection volume was 20 µL. The column temperature was kept at 35 ºC and detection wavelength was set at 238 mn. The micellar electrokinetic chromatographic method was developed using a fused silica capillary column 30 cm (effective length) x 50 µm i.d, the electrolyte was constituted of 20 mmol L-1 tetraborate buffer solution: 30 mmol L-1 sodium dodecyl sulphate (SDS), pH 9.0 adjusted with 10% phosphoric acid: 12 % v/v acetonitrile. The injection time was 3 s at 20 mbar, the applied voltage was 30 kV and detection was set at 238 nm. The both methods were developed and validated according to ANVISA, ICH and US Pharmacopeia guidelines. Therefore, the proposed methods proved to be linear, precise, accurate and suitable for simultaneous quantitation of ezetimibe and simvastatin in solid pharmaceutical formulations.
 
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Publishing Date
2015-07-20
 
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