2005, Número 1
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Rev Invest Clin 2005; 57 (1)
Actitud ante los inhibidores selectivos de COX-2
Zaragoza JL
Idioma: Español
Referencias bibliográficas: 34
Paginas: 6-12
Archivo PDF: 121.56 Kb.
FRAGMENTO
Los inhibidores selectivos de ciclooxigenasa-2 (COX-2) o coxibs como una nueva clase de antiinflamatorios no esteroideos (AINES) se introdujeron en el mercado a partir de 1999 y desde entonces se han comercializado para uso clínico: celecoxib, etoricoxib, lumiracoxib, parecoxib y rofecoxib.
Su mecanismo de acción se basa en la inhibición selectiva y eficiente de conversión del ácido araquidónico a prostaglandina H2 por la COX-2, la cual se sobreexpresa en tejidos inflamados, sin inhibir los efectos citoprotectores y fisiológicos de la COX-1 en la mucosa gástrica y otros órganos. Los estudios de equivalencia han demostrado que para el control de la analgesia e inflamación son equiparables a las dosis terapéuticas de naproxeno, diclofenaco e ibuprofeno, sin embargo, se les reconoce una menor toxicidad gástrica. Y ésta ha sido el principal estímulo para la investigación, el uso clínico y la mercadotecnia que durante estos años ha constituido una esperanza en relación con los AINES no selectivos. Sin embargo, el futuro promisorio, ofrecido por estos inhibidores selectivos ha terminado.
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