Evidence map›Paper›PMID 19146702›Full record

ArticleBMC neuroscience2009

Statistical evaluation of methods for quantifying gene expression by autoradiography in histological sections.

Stanley E Lazic

Open access · goldAbstract read
In one paragraph

Article in BMC neuroscience, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.5field-weighted citation impact, top 35% 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

6 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Differential roles of the dopamine 1-class receptors, D1R and D5R, in hippocampal dependent memory.Proceedings of the National Academy of Sciences of the United States of America · 2014
    Article
  6. Article
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

1 author at 1 institution in 1 country.

Stanley E LazicDepartment of Applied Mathematics and Theoretical Physics, Cambridge Computational Biology Institute, University of Cambridge, Cambridge, UK. stan.lazic@cantab.net
University of Cambridge · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

backgroundIn situ hybridisation (ISH) combined with autoradiography is a standard method of measuring the amount of gene expression in histological sections, but the methods used to quantify gene expression in the resulting digital images vary greatly between studies and can potentially give conflicting results.

resultsThe present study examines commonly used methods for analysing ISH images and demonstrates that these methods are not optimal. Image segmentation based on thresholding can be subject to floor-effects and lead to biased results. In addition, including the area of the structure or region of interest in the calculation of gene expression can lead to a large loss of precision and can also introduce bias. Finally, converting grey level pixel intensities to optical densities or units of radioactivity is unnecessary for most applications and can lead to data with poor statistical properties. A modification of an existing method for selecting the structure or region of interest is introduced which performs better than alternative methods in terms of bias and precision.

conclusionBased on these results, suggestions are made to reduce bias, increase precision, and ultimately provide more meaningful results of gene expression data.

Indexed as

AlgorithmsAnimalsAutoradiographyBiasBrainCarbon RadioisotopesGene ExpressionGene Expression ProfilingImage Processing, Computer-AssistedIn Situ HybridizationMaleModels, StatisticalRatsRats, Sprague-DawleyCarbon Radioisotopes

Identifiers

PMID19146702
PMCPMC2651176
OpenAlexW1974034241

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.