Abstract:
:Angiogenesis plays a key role in glioblastoma biology and antiangiogenic agents are under clinical investigation with promising results. However, the angiogenic profiles of patients with glioblastoma and their clinical significance are not well understood. Here we characterize the serum angiogenic profile of patients with glioblastoma, and examine the prognostic significance of individual angiogenic factors. Serum samples from 36 patients with glioblastoma were collected on admission and simultaneously assayed for 48 angiogenic factors using protein microarrays. The data were analyzed using hierarchical cluster analysis. Vessel morphology was assessed histologically after immunostaining for the pan-endothelial marker CD31. Tumor samples were also immunostained for tissue inhibitor of metalloproteinase-1 (TIMP-1). Cluster analysis of the serum angiogenic profiles revealed 2 distinct subtypes of glioblastoma. The 2 subtypes had markedly different tumor microvessel densities. A low serum level of TIMP-1 was associated with significantly longer survival independent of patient age, performance status, or treatment. The serum angiogenic profile in patients with glioblastoma mirrors tumor biology and has prognostic value. Our data suggest the serum TIMP-1 level as an independent predictor of survival.
journal_name
Neuro Oncoljournal_title
Neuro-oncologyauthors
Crocker M,Ashley S,Giddings I,Petrik V,Hardcastle A,Aherne W,Pearson A,Bell BA,Zacharoulis S,Papadopoulos MCdoi
10.1093/neuonc/noq170subject
Has Abstractpub_date
2011-01-01 00:00:00pages
99-108issue
1eissn
1522-8517issn
1523-5866pii
noq170journal_volume
13pub_type
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