Evidence map›Paper›PMID 8688581›Full record

ArticleJournal of assisted reproduction and genetics1996

Polymerase chain reaction amplification specificity: incidence of allele dropout using different DNA preparation methods for heterozygous single cells.

S A Gitlin, S E Lanzendorf, W E Gibbons

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Journal of assisted reproduction and genetics, 1996. 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
–field-weighted citation impact
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.

  1. Article
  2. Article
  3. Molecular diagnostics in preimplantation genetic diagnosis.The Journal of molecular diagnostics : JMD · 2002
    Review
  4. Article
  5. Article
  6. Preimplantation genetic diagnosis.Journal of assisted reproduction and genetics · 1996
    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

3 authors.

S A GitlinJones Institute for Reproductive Medicine, Department of Obstetrics and Gynecology, Eastern Virginia Medical School, Norfolk, Virginia 23507, USA. sueg@jones1.evms.edu
S E Lanzendorf
W E Gibbons

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose was to evaluate methods of DNA preparation in a single cell to determine the ability to amplify and correctly diagnose a targeted gene.

methodsOne- or two-cell lymphoblasts (n = 100/group), heterozygous for the normal and 4-base pair insertion on exon 11 of the beta-hexosaminidase A gene, were collected and prepared under the following conditions: (1) freeze-thaw liquid nitrogen, then boiling (LN2); (2) potassium hydroxide/dithiothreitol, heated to 65 degrees C, followed by acid neutralization (KOH); (3) boiling only (Bl); and (4) water only (H2O). Cells were analyzed by polymerase chain reaction using nested primers.

resultsThe total number of cells amplifying [in brackets] and the cells with amplification for both alleles (heterozygous), the normal allele, or the mutant allele were as follows, respectively: LN2 [38], 11, 16, 11; KOH [97], 91, 5, 1; Bl [41], 17, 13, 11; and H2O [85], 41, 16, 28. With two cells per reaction tube the results were as follows: LN2 [85], 53, 14, 18; and KOH [97], 96, 1, 0.

conclusionsKOH lysis was significantly greater than with all other methods (P < 0.006) and should be used for single cells. This study also demonstrates the importance of using heterozygous cells to determine the ability to amplify both alleles as a method of quality control for single-cell analysis.

Indexed as

AllelesArtifactsbeta-N-AcetylhexosaminidasesCell FractionationCells, CulturedDithiothreitolDNADNA Mutational AnalysisExonsFeasibility StudiesFreezingHeterozygoteHot TemperatureHumansHydroxidesIsoenzymesbeta-N-AcetylhexosaminidasesDithiothreitolDNAHydroxidesIsoenzymesNitrogenPotassium Compoundspotassium hydroxideWater

Identifiers

PMID8688581

What OpenQuestion holds

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Registered trials

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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.