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Effects of calcium on phthalocyanine sensitized photohemolysis.
Indian J Exp Biol ; 1998 Feb; 36(2): 152-6
Artículo en Inglés | IMSEAR | ID: sea-58919
ABSTRACT
Influence of divalent Ca2+ ions in sulphonated chlorophthalocyanine (ClAlPcS2) induced photohemolysis in rabbit red blood cells has been investigated. Loading of excess Ca2+ to ClAlPcS2 sensitized RBC suspension enhanced hemolysis in a concentration dependent manner. Protein kinase C (PKC) inhibitor chlorpromazine and cation chelator EDTA reduced Ca2+ enhanced photohemolysis. Photohemolysis increased with calcium channel blockers diltiazem and nifidipine. Enhancement in photohemolysis by Ca2+ ions can arise either by its ability to liberate Fe2+ bound to phosphatidylserine or by stimulation of PKC. Inability of calcium channel blockers to prevent Ca2+ influx following photodynamic treatment of red blood cells suggest nonspecific leakage rather than involvement of Ca2+ channels in erythrocytes.
Asunto(s)
Texto completo: Disponible Índice: IMSEAR (Asia Sudoriental) Asunto principal: Conejos / Cinética / Bloqueadores de los Canales de Calcio / Clorpromazina / Calcio / Ácido Egtácico / Fármacos Fotosensibilizantes / Eritrocitos / Hemólisis / Indoles Idioma: Inglés Revista: Indian J Exp Biol Año: 1998 Tipo del documento: Artículo

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Texto completo: Disponible Índice: IMSEAR (Asia Sudoriental) Asunto principal: Conejos / Cinética / Bloqueadores de los Canales de Calcio / Clorpromazina / Calcio / Ácido Egtácico / Fármacos Fotosensibilizantes / Eritrocitos / Hemólisis / Indoles Idioma: Inglés Revista: Indian J Exp Biol Año: 1998 Tipo del documento: Artículo