2004
DOI: 10.1590/s0100-879x2004000200016
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Photophysical studies of zinc phthalocyanine and chloroaluminum phthalocyanine incorporated into liposomes in the presence of additives

Abstract: The photophysical properties of zinc phthalocyanine (ZnPC) and chloroaluminum phthalocyanine (AlPHCl) incorporated into liposomes of dimyristoyl phosphatidylcholine in the presence and absence of additives such as cholesterol or cardiolipin were studied by timeresolved fluorescence, laser flash photolysis and steady-state techniques. The absorbance of the drugs changed linearly with drug concentration, at least up to 5.0 µM in homogeneous and heterogeneous media, indicating that aggregation did not occur in th… Show more

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Cited by 177 publications
(131 citation statements)
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“…Phthalocyanines present a variety of metal ions in their chemical structure, which are indeed responsible for the particular property of each molecule. Aluminum (III) is a metal ion used for enhancing phthalocyanine phototoxicity [2,6]. However, most phthalocyanines are hydrophobic compounds requiring association to specific drug delivery systems for clinical use.…”
Section: Introductionmentioning
confidence: 99%
“…Phthalocyanines present a variety of metal ions in their chemical structure, which are indeed responsible for the particular property of each molecule. Aluminum (III) is a metal ion used for enhancing phthalocyanine phototoxicity [2,6]. However, most phthalocyanines are hydrophobic compounds requiring association to specific drug delivery systems for clinical use.…”
Section: Introductionmentioning
confidence: 99%
“…Nos últimos anos tem sido investigada a potencialidade do uso de corantes fotossensibilizantes como compostos ativos no tratamento fotoquímico-terápico de tecidos tumorais (ALLISON et al, 2004), definindo-se uma nova linha de ação na TFD (BOLFARINI et al, 2012;DE PAULA et al, 2012;MACAROFF et al, 2006;NUNES, 2004;PRIMO , BENTLEY e TEDESCO, 2008;SIQUEIRA-MOURA et al, 2013).…”
Section: Fármacos Fotossensibilizantes: Ftalocianinasunclassified
“…, com ótima penetração da luz no tecido (Allison, Downie et al, 2004;Nunes, Sguilla et al, 2004), resultando em elevada resposta fototerápica. A estrutura molecular das ftalocianinas é semelhante à das porfirinas, apresentando um macrociclo tetrapirrólico com átomos de nitrogênio ligando as subunidades pirrólicas no lugar das pontes de metileno presentes nas porfirinas (Figura 5).…”
Section: Ftalocianinas E Nanopartículasunclassified
“…Entre os fotossensibilizadores de segunda geração mais promissores estão as ftalocianinas (Nunes, Sguilla et al, 2004). As ftalocianinas apresentam propriedades como alta seletividade para os tecidos tumorais, alta eficiência citotóxica devido à fotogeração de oxigênio singlete (Sibata, Colussi et al, 2000) e alto coeficiente de absorção na faixa de 600 a 850 nm em energias em torno de 100…”
Section: Ftalocianinas E Nanopartículasunclassified