Evidence map›Paper›PMID 31844442›Full record

ArticleOpen access Macedonian journal of medical sciences2019

Heavy Metals Can either Aid or Oppose the Protective Function of the Placental Barrier.

Enas R Abdel Hameed, Manal Abdelkader Shehata, Hisham Waheed, Ola M Abdel Samie, Hanaa H Ahmed, Lobna S Sherif, Amira Ahmed

Open access · diamondAbstract read
In one paragraph

Article in Open access Macedonian journal of medical sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
0.5field-weighted citation impact, top 36% 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

2 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.

  1. Pooled it
  2. Review
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 at 1 institution in 1 country.

Enas R Abdel HameedChild Health Department, Medical Research Division, National Research Centre, Cairo, Egypt.
Manal Abdelkader ShehataChild Health Department, Medical Research Division, National Research Centre, Cairo, Egypt.
Hisham WaheedChild Health Department, Medical Research Division, National Research Centre, Cairo, Egypt.
Ola M Abdel SamieChild Health Department, Medical Research Division, National Research Centre, Cairo, Egypt.
Hanaa H AhmedHormones Department, Medical Research Division, National Research Centre, Cairo, Egypt.
Lobna S SherifChild Health Department, Medical Research Division, National Research Centre, Cairo, Egypt.
Amira AhmedEl-Galaa Teaching Hospital, Cairo, Egypt.
National Research Centre · EG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn developing countries, toxic heavy metals are a threatening catastrophe to human health, particularly in the vulnerable group of pregnant mothers and their fetuses. Fortunately, the placenta can be a protective barrier to the fetuses.

aimTo explore the relationship between serum lead, cadmium and arsenic levels in pregnant mothers and their newborns, to address the placental barrier in this situation.

methodsA cross-sectional study was conducted on 100 pregnant mothers at the time of labour and their newborns. Serum cadmium, lead, and arsenic levels were measured using the Inductively Coupled Plasma Mass Spectrometry.

resultsAll the studied heavy metals concentrations showed a significant elevation in the maternal blood relative to the cord blood. There was a significant association between the maternal lead and both fetal lead and arsenic. Meanwhile, a negative but insignificant correlation was recorded between the maternal cadmium and each of the fetal cadmium, lead, and arsenic.

conclusionThe study findings indicated a weak relation between maternal and fetal blood heavy metals, except for the influence of maternal lead, so it can be assumed that the placental barriers are partially protective against those toxic pollutants, putting into consideration the influence of their different natures.

Indexed as

Heavy metalsMaternal blood: Cord bloodPlacental permeability

Identifiers

PMID31844442
PMCPMC6901862
OpenAlexW2990061140

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.