Evidence map›Paper›PMID 35746801›Full record

ArticleViruses2022

SARS-CoV-2, Placental Histopathology, Gravity of Infection and Immunopathology: Is There an Association?

Leonardo Resta, Antonella Vimercati, Gerardo Cazzato, Margherita Fanelli, Sara Vincenza Scarcella, Giuseppe Ingravallo, Anna Colagrande, Sara Sablone, Mary Stolfa, Francesca Arezzo and 2 more

Open access · goldAbstract read
In one paragraph

Article in Viruses, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
3.7field-weighted citation impact, top 6% 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

14 citing papers in PubMed, 20 citations in OpenAlex.

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  13. Risk of preeclampsia in patients with symptomatic COVID-19 infection.Journal of gynecology obstetrics and human reproduction · 2022
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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

12 authors at 1 institution in 1 country.

Leonardo RestaSection of Pathology, Department of Emergency and Organ Transplantation (DETO), University of Bari "Aldo Moro", 70124 Bari, Italy.ORCID 0000-0003-4335-4776
Antonella VimercatiSection of Ginecology and Obstetrics, Department of Biomedical Sciences and Human Oncology (DIMO), University of Bari "Aldo Moro", 70124 Bari, Italy.ORCID 0000-0002-9862-1619
Gerardo CazzatoSection of Pathology, Department of Emergency and Organ Transplantation (DETO), University of Bari "Aldo Moro", 70124 Bari, Italy.ORCID 0000-0003-0325-4316
Margherita FanelliSection of Pathology, Department of Emergency and Organ Transplantation (DETO), University of Bari "Aldo Moro", 70124 Bari, Italy.ORCID 0000-0002-0128-9745
Sara Vincenza ScarcellaSection of Pathology, Department of Emergency and Organ Transplantation (DETO), University of Bari "Aldo Moro", 70124 Bari, Italy.
Giuseppe IngravalloSection of Pathology, Department of Emergency and Organ Transplantation (DETO), University of Bari "Aldo Moro", 70124 Bari, Italy.ORCID 0000-0002-4792-3545
Anna ColagrandeSection of Pathology, Department of Emergency and Organ Transplantation (DETO), University of Bari "Aldo Moro", 70124 Bari, Italy.
Sara SabloneSection of Legal Medicine, Department of Interdisciplinary Medicine, Bari Policlinico Hospital, University of Bari "Aldo Moro", 70124 Bari, Italy.ORCID 0000-0002-2864-3521
Mary StolfaSection of Pathology, Department of Emergency and Organ Transplantation (DETO), University of Bari "Aldo Moro", 70124 Bari, Italy.
Francesca ArezzoSection of Ginecology and Obstetrics, Department of Biomedical Sciences and Human Oncology (DIMO), University of Bari "Aldo Moro", 70124 Bari, Italy.
Teresa LettiniSection of Pathology, Department of Emergency and Organ Transplantation (DETO), University of Bari "Aldo Moro", 70124 Bari, Italy.
Roberta RossiSection of Pathology, Department of Emergency and Organ Transplantation (DETO), University of Bari "Aldo Moro", 70124 Bari, Italy.
University of Bari Aldo Moro · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

(1) Background: As the pandemic months progress, more and more evidence shows that the placenta acts as a “barrier” to SARS-CoV-2, although rare cases of vertical transmission have been described. (2) Methods: In an attempt to investigate whether the symptoms’ severity was related to different placental histological characteristics and the immune microenvironment, we subdivided 29 placentas from 29 mothers positive for SARS-CoV-2 into two groups, depending on the symptomatology (moderate/severe vs. asymptomatic/mild), performing immunohistochemical investigations for CD4 + and CD8 + T lymphocytes, as well as for CD68 + macrophage. We also evaluated the immuno-expression of the ACE2 receptor at the placental level. These two groups were compared to a control group of 28 placentas from 28 SARS-CoV-2-negative healthy mothers. (3) Results: The symptoms (likely to be related to viremia) were statistically significantly correlated (p < 0.05) with histopathological changes, such as maternal malperfusion, decidual arteriopathy, blood vessel thrombus of fetal relevance. Furthermore, the immuno-expression of ACE2 was significantly lower in SARS-CoV-2-positive groups vs. control group (p = 0.001). (4) Conclusions: There is still much to study and discover regarding the relationship between SARS-CoV-2 and histological changes in placentas and how the latter might contribute to various neonatal clinical outcomes, such as prematurity.

Indexed as

COVID-19Pregnancy Complications, InfectiousAngiotensin-Converting Enzyme 2FemaleHumansInfant, NewbornInfectious Disease Transmission, VerticalPlacentaPregnancySARS-CoV-2Angiotensin-Converting Enzyme 2ACE-2CD4CD8immunohistochemistryimmunopathologyplacentaRT-PCRSARS-CoV-2

Identifiers

PMID35746801
PMCPMC9227044
OpenAlexW4283167619

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.