Photodynamic detection of canine mammary gland tumours after oral administration of 5-aminolevulinic acid.
Vet Comp Oncol
; 15(3): 731-739, 2017 Sep.
Article
em En
| MEDLINE
| ID: mdl-26766288
ABSTRACT
5-Aminolevulinic acid (5-ALA) is widely used in photodynamic detection (PDD) and therapy. We evaluated the pharmacokinetics of 5-ALA-induced porphyrins and its effectiveness in PDD in dogs with mammary gland tumours (MGTs) following oral administration. Healthy dogs and those with MGTs (nine each) were orally administered 4 mg kg-1 5-ALA. Protoporphyrin IX (PpIX) was not detected in the plasma of healthy dogs but it peaked in dogs with MGT at 2 h after 5-ALA administration. In the PDD study, 16 dogs with MGT were orally administered 40 mg kg-1 5-ALA, and MGT but not normal tissue showed red fluorescence after 2-4 h. Photon counts were 6635-63 890 and 59-4011 (median, 19 943 and 919) for MGT and non-tumour tissues, respectively. Cell density strongly correlated with PpIX photon counts of MGT tissue of the dogs (R = 0.743, P = 0.0009). We suggest that 5-ALA-PDD might be an effective diagnostic tool for MGTs.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Espectrometria de Fluorescência
/
Neoplasias Mamárias Animais
/
Fármacos Fotossensibilizantes
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Doenças do Cão
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Ácido Aminolevulínico
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
En
Revista:
Vet Comp Oncol
Assunto da revista:
MEDICINA VETERINARIA
/
NEOPLASIAS
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Japão