Evidence map›Paper›PMID 21360136›Full record

ArticleJournal of assisted reproduction and genetics2011

Use of parthenogenetic activation of human oocytes as an experimental model for evaluation of polar body based PGD assay performance.

Alessio Paffoni, Valentina Paracchini, Stefania Ferrari, Claudia Scarduelli, Manuela Seia, Domenico A Coviello, Guido Ragni

Abstract readEvaluation Study
In one paragraph

Article in Journal of assisted reproduction and genetics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

7 authors.

Alessio PaffoniDepartment of Obstetrics and Gynaecology, Infertility Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, via M. Fanti 6, 20122 Milan, Italy. alessio.paffoni@alice.it
Valentina Paracchini
Stefania Ferrari
Claudia Scarduelli
Manuela Seia
Domenico A Coviello
Guido Ragni

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo develop an experimental model to assess the feasibility of polar body preimplantation genetic diagnosis without requiring oocyte fertilization.

methodsFirst polar body was removed from donated oocytes and second polar body was biopsied after parthenogenetic activation. Molecular analysis on both polar bodies involved a fluorescent multiplex polymerase chain reaction of short-tandem repeat markers, closely linked to genes of interest. Main outcome measures were: allele segregation through polar bodies and haploid nucleus, recombination rates between alleles and frequency of Allele Drop Out.

resultsTwenty-six out of 39 oocytes extruded a second polar body after activation. Ninety-two percent of the first polar bodies and 20 out of 26 (77%) second polar bodies were successfully amplified. Eighty percent of first polar bodies were heterozygous for CFTR and 55% for HBB. Analysis of second polar bodies predicted the genotype of the oocytes in case of heterozygous first polar body, and validated results in homozygous cases. Frequency of allele drop out was 4%.

conclusionsOur model confirms that polar body preimplantation genetic diagnosis for single gene disorders can be evaluated using parthenogenetic oocytes and offers an option to set up procedures without requiring oocyte fertilization.

Indexed as

ParthenogenesisAllelesFeasibility StudiesFemaleGenotypeHumansMultiplex Polymerase Chain ReactionOocytesPolar BodiesPreimplantation Diagnosis

Identifiers

PMID21360136
PMCPMC3151362

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