Effects of Human Serun Albumin in Some Biological Properties of Rhodium(II) Complexes
نویسندگان
چکیده
Cinco complexos de ródio(II) de fórmula geral [Rh2(ponte)4] (ponte = acetato, propionato, butirato, trifluoroacetato e trifluoroacetamidato) tiveram suas afinidades em relação à albumina humana (HSA) determinadas por espectrofotometria, observando-se no caso dos alquilcarboxilatos uma correlação inversa com suas lipossolubilidades. A difusão dos complexos livres ou ligados à proteína para células de Ehrlich in vitro parece primordialmente governada pelo caráter hidrofóbico do complexo. O complexo [Rh2(tfc)4] apresentou afinidade pela proteína (K = 214,1), além de partição celular tanto em ausência (32,1%) como na presença (48,6%) de HSA. Desta forma, o composto HSA: [Rh2(tfc)4] teve sua ação antitumoral investigada em camundongos Balb-c portadores de ascite de Ehrlich, mostrando que a HSA pode ser um reservatório para o complexo de ródio.
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