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Bull Exp Biol Med ; 160(2): 208-12, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26639468

RESUMO

We studied the effects of medium pH on steady-state distribution of chlorine e6 and its derivatives between the main transport proteins of human blood plasma. The decrease in medium pH from weakly alkaline (pH 7.4) to acid (pH 5.0) was followed by an increase in relative affinity of chlorines to lipoproteins and reduced their affinity to serum albumin. pH-Dependent changes in the parameters of distribution of photosensitizers between the plasma and blood cells was revealed. We discussed the role of charge and polarity degree of photosensitizer molecule in the mechanism of binding to serum albumin. A possible role of changes in hydrogen ion activity in the processes of selective accumulation of chlorines by tumor cells is discussed.


Assuntos
Porfirinas/sangue , Porfirinas/metabolismo , Transporte Biológico/fisiologia , Clorofilídeos , Humanos , Concentração de Íons de Hidrogênio , Soro/metabolismo , Albumina Sérica/metabolismo
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