Cited by 106Air Quality and Health ImpactsPregnancy and preeclampsia studiesImmunotoxicology and immune responses

Effect of Fine Particulate Matter (PM2.5) on Rat Placenta Pathology and Perinatal Outcomes

Open access
Liu, Yi, Wang, Ledan, Wang, Fang, Li, Changzhong·2016·Medical Science Monitor

Abstract

BACKGROUND Fine particulate matter with aerodynamic diameters smaller than 2.5 μm (PM2.5) has been reported to cause adverse effects on human health. Evidence has shown the association between PM2.5 exposure and adverse perinatal outcomes, and the most common method is epidemiological investigation. We wished to investigate the impact of PM2.5 on placenta and prenatal outcomes and its related mechanisms in a rat model. MATERIAL AND METHODS Pregnant rats were exposed to a low PM2.5 dose (15 mg/kg) with intratracheal instillation at pregnant day 10 and day 18, while the controls received an equivalent volume normal saline. All rats received cesarean section 24 h after the last intratracheal instillation and were sacrificed with anesthesia. Blood routine tests (BRT) and interleukin-6 (IL-6) were detected for analyzing inflammation and blood coagulation. Placenta tissue sections underwent pathologic examination, and the levels of homogenate glutathione peroxidase (GSH-Px) and methane dicarboxylic aldehyde (MDA) were determined for oxidative stress estimation. RESULTS Increased absorbed blastocysts, and lower maternal weight gain and fetal weight were found in the PM2.5 exposure group compared to controls (p<0.05). Exposure to PM2.5 caused a significant increase of blood mononuclear cells (PBMC), platelets, and IL-6 levels (P<0.01). There were no differences in GSH-Px and MDA of placenta homogenate between the 2 groups (P>0.05). Placenta pathological examination demonstrated thrombus and chorioamnionitis in the PM2.5 exposure group. CONCLUSIONS PM2.5 exposure can result in placental pathological changes and adverse perinatal outcomes. The placental inflammation and hypercoagulability with vascular thrombosis may play important roles in placental impairment, but oxidative stress appears to be less important.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.12659/msm.897808

Cites

41 of 41 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Around birth, exposure to fine particulate matter is linked to placental oxidative stress, DNA damage, inflammatory changes, hypercoagulability and thrombosis.

    “Several studies have shown relationships between perinatal exposure to particulate matter ≤2.5 µm in size (PM2.5) and placental oxidative stress, DNA damage, inflammation, hypercoagulation and thrombosis161–166”

    From A global view of hypertensive disorders and diabetes mellitus during pregnancy (2022) · cites this paper as [161]

    The Results and Discussion (page numbers unavailable) report placental inflammation, increased platelets consistent with hypercoagulability, and placental thrombi after PM2.5 exposure in rats. They do not report placental DNA damage. The Results found no significant difference in placental oxidative-stress markers, and the Discussion says oxidative stress did not appear to play a major role. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • Investigators observed increased absorbed blastocysts and abnormal placental pathology following gestational PM2.5 exposure.

    “Moreover, investigators observed increased absorbed blastocysts and abnormal placental pathology following gestational PM2.5 exposure.”
  • Liu et al. exposed pregnant rats to PM2.5 on gestation days 10 and 18; fetal weights were significantly decreased in the PM-exposed group.

    “Liu et al. [89] exposed pregnant rats to PM2.5 on gestation days 10 and 18. Fetal weights were significantly decreased in the PM-exposed group.”
  • Pregnant rats exposed to a low dose of PM2.5 via intratracheal instillation on gestational days 10 and 18 showed increased IL-6 levels in maternal blood; however, oxidative stress appeared to be less important in this model.

    “Pregnant rats exposed to a low dose of PM2.5 via intratracheal instillation on gestational days 10 and 18 showed increased IL-6 levels in maternal blood; however, oxidative stress appeared to be less important in this model [89].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Liu, Y., Wang, L., Wang, F., & Li, C.
Affiliations
  • Shandong University (CN)
  • Wenzhou Medical University (CN)
  • Baotou Medical College (CN)
Corresponding author
Li, Changzhong
Venue
Medical Science Monitor
Published
2016-09-15
Volume
22
Pages
3274-3280
ISSN
  • 1234-1010 (ISSN-L)
  • 1643-3750
OpenAlex
W2519467055
Cited by
106
References
41
Citations by year
2026: 8 · 2025: 21 · 2024: 13 · 2023: 9 · 2022: 14 · 2021: 11 · 2020: 9 · 2019: 12 · 2018: 5 · 2017: 4
FWCI
4.38
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
  • Medical Science Monitor (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
  • Health Sciences › Medicine › Obstetrics and Gynecology › Pregnancy and preeclampsia studies
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotoxicology and immune responses
Keywords
PM2.5, placental pathology, perinatal outcomes, air pollution exposure, placental inflammation, interleukin-6, hypercoagulability, placental thrombosis, chorioamnionitis, oxidative stress, fetal growth restriction, gestational weight gain, rat model
MeSH terms
Animals, Female, Inflammation, Leukocytes, Mononuclear, Lung, Particle Size, Placenta, Pregnancy, Interleukin-6, Cytokines, Rats, Sprague-Dawley, Oxidative Stress, Models, Animal, Rats, Particulate Matter

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review