Effects of calcium on phthalocyanine sensitized photohemolysis.
Indian J Exp Biol
;
1998 Feb; 36(2): 152-6
Artigo
em Inglês
| 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.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Coelhos
/
Cinética
/
Bloqueadores dos Canais de Cálcio
/
Clorpromazina
/
Cálcio
/
Ácido Egtázico
/
Fármacos Fotossensibilizantes
/
Eritrócitos
/
Hemólise
/
Indóis
Idioma:
Inglês
Revista:
Indian J Exp Biol
Ano de publicação:
1998
Tipo de documento:
Artigo
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