Evidence map›Paper›PMID 23475277›Full record

ArticleMedical molecular morphology2014

Food allergens are transferred intact across the rat blood-placental barrier in vivo.

Yoshiko Sakuma, Ryoko Baba, Kumi Arita, Hiroyuki Morimoto, Mamoru Fujita

Abstract read
PubMed Publisher
In one paragraph

Article in Medical molecular morphology, 2014. 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
0.1field-weighted citation impact, top 41% 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

1 citing paper in PubMed, 2 citations in OpenAlex.

  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

5 authors at 3 institutions in 1 country.

Yoshiko SakumaGraduate School of Health and Nutrition Sciences, Nakamura Gakuen University, 5-7-1 Befu, Jyonan-ku, Fukuoka, 814-0198, Japan.
Ryoko Baba
Kumi Arita
Hiroyuki Morimoto
Mamoru Fujita
Nakamura Gakuen University · JPUniversity of Occupational and Environmental Health Japan · JPFukuoka University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We investigated the mechanism of transplacental macromolecular transport in rats on the nineteenth day of pregnancy using tracers, transmission electron microscopy and immunohistochemistry. The blood-placental barrier of full-term rat placentas was composed of a trilaminar layer of trophoblast cells that separates the fetal capillaries from the maternal blood spaces: a layer of cytotrophoblasts lining the maternal blood space and a bilayer of syncytiotrophoblast surrounding the fetal capillaries. Horseradish peroxidase, intravenously injected into the maternal circulation, was found in the maternal blood spaces, the interspaces between the cytotrophoblasts and the syncytiotrophoblast I, many pits and small vesicles in the syncytiotrophoblast I, vesicles of the syncytiotrophoblast II, fetal connective tissue and fetal capillaries. Intravenously injected ovalbumin was detected in the maternal blood spaces, a trilaminar layer and the fetal capillaries. Neonatal Fc receptor (FcRn), a receptor for IgG, was localized at the maternal side of the blood-placental barrier. These results show that the structure of the rat blood-placental barrier is quite similar to the human blood-placental barrier, and non-specific macromolecules and food allergens may penetrate through the blood-placental barrier of the full-term placenta from the maternal to fetal circulation mediated by FcRn.

Indexed as

Maternal-Fetal ExchangeAllergensAnimalsBiological TransportFemaleHistocompatibility Antigens Class IHorseradish PeroxidaseHumansImmunohistochemistryInjections, IntravenousMicroscopy, Electron, TransmissionMicroscopy, FluorescenceOvalbuminPlacentaPregnancyRats, WistarAllergensFc receptor, neonatalHistocompatibility Antigens Class IHorseradish PeroxidaseOvalbuminReceptors, Fc

Identifiers

PMID23475277
OpenAlexW2131619105

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.