Evidence map›Paper›PMID 15583935›Full record

ArticleJournal of cancer research and clinical oncology2005

Anti-angiogenic effects of SN38 (active metabolite of irinotecan): inhibition of hypoxia-inducible factor 1 alpha (HIF-1alpha)/vascular endothelial growth factor (VEGF) expression of glioma and growth of endothelial cells.

Hiroshi Kamiyama, Shingo Takano, Koji Tsuboi, Akira Matsumura

Open access · greenAbstract read
In one paragraph

Article in Journal of cancer research and clinical oncology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 2 pooled it
0.9field-weighted citation impact, top 26% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 2 syntheses or guidelines pooled it, 64 citations in OpenAlex.

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  5. Antitumor activity of irinotecan with ellagic acid in C6 glioma cells.Revista da Associacao Medica Brasileira (1992) · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Hiroshi KamiyamaDepartment of Neurosurgery, Institute of Clinical Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba City, Ibaraki 305-8575, Japan.
Shingo Takano
Koji Tsuboi
Akira Matsumura
University of Tsukuba · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeInhibition of angiogenesis is an important new treatment modality for malignancies, including gliomas. Vascular endothelial growth factor (VEGF) and hypoxia inducible factor-1alpha (HIF-1alpha) have been investigated as potent mediators of tumor angiogenesis. We investigated whether four major chemotherapeutic agents (ACNU, cisplatin, etoposide, and SN38) showed an angiosuppressive effect in vitro.

methodThe effects of ACNU, cisplatin, etoposide, and SN38 for endothelial cells were assessed by cell growth inhibition assay (WST-8 assay) and vessel formation assay (angiogenesis kit). The inhibitory effects of the HIF-1alpha and VEGF expression of glioma cells after SN38 treatment were assessed by real-time RT-PCR, Western blot, and ELISA.

resultsSN38, but not other chemotherapeutic agents, selectively inhibited endothelial cell proliferation and three-dimensional tube formations at the 0.01 microM. Furthermore, SN38 significantly decreased the HIF-1alpha and VEGF expression of glioma cells in a dose- and time-dependent manner under normoxic and hypoxic conditions. SN38 has dual angiosuppressive actions, including both the inhibition of endothelial proliferation and tube formation, and the inhibition of the angiogenic cascade in glioma cells.

conclusionSN38 is an attractive agent as both a direct and indirect angiogenesis inhibitor and provides the anti-glioma agents with an angiosuppressive function.

Indexed as

Angiogenesis InhibitorsAntineoplastic Agents, PhytogenicBlotting, WesternCamptothecinCell Line, TumorEndothelial CellsEnzyme InhibitorsGene Expression Regulation, NeoplasticGliomaHumansHypoxia-Inducible Factor 1, alpha SubunitIrinotecanRNA, MessengerTranscription FactorsVascular Endothelial Growth Factor AAngiogenesis InhibitorsAntineoplastic Agents, PhytogenicCamptothecinEnzyme InhibitorsHIF1A protein, humanHypoxia-Inducible Factor 1, alpha SubunitIrinotecanRNA, MessengerTranscription FactorsVascular Endothelial Growth Factor A

Identifiers

PMID15583935
PMCPMC12161230
OpenAlexW1997062281

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.