Linked Life Data

11323098

Source:http://linkedlifedata.com/resource/pubmed/id/11323098

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2001-4-27
pubmed:abstractText
Cancer photodynamic therapy (PDT) with benzoporphyrin derivative monoacid ring A (BPD-MA, verteporfin) may be effective not only by being directly cytotoxic to tumor cells, but also by being cytotoxic to the endothelium of tumor neovasculature. In the present study, we investigated the effect of PDT with an experimental liposomal formulation of BPD-MA on tumor-induced angiogenic vessels using a murine dorsal air sac model. First, hemostasis of neovasculature was examined by varying the regimen of PDT. Laser irradiation at 15 min after injection of 2 mg/kg liposomal BPD-MA (15 min PDT) caused complete blocking of blood flow in neovasculature. In contrast, PDT did not inhibit blood flow when the irradiation occurred 3 h after the injection of liposomal BPD-MA (3 h PDT). Next, the antitumor effect of PDT on Meth A sarcoma-bearing mice was investigated by using the hemostasis-inducing regimen. Tumor growth was strongly inhibited after the 15 min PDT with BPD-MA at a dose of 0.5-2 mg/kg. In contrast, 3 h PDT with BPD-MA at a dose of 2 mg/kg suppressed tumor growth only partially. The current study indicates that 15 min PDT causes strong suppression of tumor growth, perhaps through damaging endothelial cells in the tumor neovasculature rather than through a direct cytotoxic effect on tumor cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0304-3835
pubmed:author
pubmed:issnType
Print
pubmed:day
10
pubmed:volume
167
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
49-56
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Photodynamic therapy targeted to tumor-induced angiogenic vessels.
pubmed:affiliation
Department of Medical Biochemistry, School of Pharmaceutical Sciences, University of Shizuoka, Yada, 422-8526, Shizuoka, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't