Evidence map›Paper›PMID 21184108›Full record

ArticleSurgical endoscopy2011

Minimally invasive colon resection is associated with a persistent increase in plasma PlGF levels following cancer resection.

H M C Shantha Kumara, Jenny C Cabot, Xiaohong Yan, Sonali A C Herath, Martin Luchtefeld, Matthew F Kalady, Daniel L Feingold, Raymond Baxter, Richard L Whelan

Abstract read
PubMed Publisher
In one paragraph

Article in Surgical endoscopy, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
0.7field-weighted citation impact, top 25% 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

19 citing papers in PubMed, 27 citations in OpenAlex.

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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

9 authors at 3 institutions in 2 countries.

H M C Shantha KumaraDivision of Colon and Rectal Surgery, Department of Surgery, St. Luke's-Roosevelt Hospital Center, and Columbia University, Suite 7B, 425 West 59th Street, New York, NY 10019, USA.
Jenny C Cabot
Xiaohong Yan
Sonali A C Herath
Martin Luchtefeld
Matthew F Kalady
Daniel L Feingold
Raymond Baxter
Richard L Whelan
St. Luke's-Roosevelt Hospital Center · USColumbia University · USSpectrum Health · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMinimally invasive colorectal resection (MICR) is associated with persistently elevated plasma VEGF levels that may stimulate angiogenesis in residual tumor foci. Placenta growth factor (PlGF) stimulates neovascularization in tumors by modulating VEGF's effects. This study's purpose was to determine the impact of MICR on blood PlGF levels in cancer patients (Study A) and to compare PreOp levels in patients with cancer and benign (BEN) disease (Study B).

methodsBlood samples were collected preoperatively, on postoperative day (POD) 1, POD 3, and at various time points 2-4 weeks after surgery. Samples from 7-day periods after POD 6 were bundled to allow analysis. Plasma PlGF levels were determined via ELISA, results reported as mean±SD, and data analyzed via t test. Significance was set at p<0.008 after Bonferroni correction.

resultsStudy A: 76 colorectal cancer (CRC) patients had MICR (laparoscopic, 59%; hand-assisted, 41%). The mean length of stay was 5.8±2.1 days. The mean PreOp PlGF level was 15.4±4.3 pg/ml. Significantly increased levels were noted on POD 1 (25.8±7.7 pg/ml, p<0.001), POD 3 (22.9±6.7, p<0.001), POD 7-13 (19.2±5.1, p<0.001), and POD 14-20 (19.5±6.7, p<0.002). The mean POD 21-27 level was not significantly different from baseline. Study B included 126 CRC and 111 BEN patients. PreOp levels were higher in the CRC patients (15.6±5.3 pg/ml) than in the BEN group (13.5±5.5 pg/ml, p=0.001).

conclusionsPlGF levels are elevated for 3 weeks after MICR and PreOp plasma levels are higher in CRC patients than in BEN disease patients. The cause of the postoperative increase is unclear. The persistently higher blood levels of PlGF and VEGF after MICR may stimulate angiogenesis in residual tumor foci. Further studies regarding late blood protein alterations after surgery appear to be indicated.

Indexed as

Minimally Invasive Surgical ProceduresAgedColorectal NeoplasmsEnzyme-Linked Immunosorbent AssayFemaleHumansLaparoscopyLength of StayMaleMiddle AgedPlacenta Growth FactorPostoperative ComplicationsPregnancy ProteinsProspective StudiesVascular Endothelial Growth Factor APGF protein, humanPlacenta Growth FactorPregnancy ProteinsVascular Endothelial Growth Factor A

Identifiers

PMID21184108
OpenAlexW2071424369

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.