Evidence map›Paper›PMID 32506750›Full record

ArticleAmerican journal of reproductive immunology (New York, N.Y. : 1989)2020

Erythropoietin prevents LPS-induced preterm birth and increases offspring survival.

Jie Zhang, Xianqiong Luo, Caicai Huang, Zheng Pei, Huimei Xiao, Xingang Luo, Shuangmiao Huang, Yanqun Chang

Open access · bronzeAbstract read
In one paragraph

Article in American journal of reproductive immunology (New York, N.Y. : 1989), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 35% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Erythropoietin prevents LPS-induced preterm birth and increases offspring survival.American journal of reproductive immunology (New York, N.Y. : 1989) · 2020
    Article
  8. 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

8 authors at 1 institution in 1 country.

Jie ZhangDepartment of Rehabilitation, Guangdong Women and Children Hospital, Guangzhou, China.ORCID 0000-0002-3935-5883
Xianqiong LuoDepartment of Pediatrics, Guangdong Women and Children Hospital, Guangzhou, China.
Caicai HuangDepartment of Obstetrics, Guangdong Women and Children Hospital, Guangzhou, China.
Zheng PeiDepartment of Rehabilitation, Guangdong Women and Children Hospital, Guangzhou, China.
Huimei XiaoDepartment of Rehabilitation, Guangdong Women and Children Hospital, Guangzhou, China.
Xingang LuoDepartment of Rehabilitation, Guangdong Women and Children Hospital, Guangzhou, China.
Shuangmiao HuangDepartment of Rehabilitation, Guangdong Women and Children Hospital, Guangzhou, China.
Yanqun ChangDepartment of Rehabilitation, Guangdong Women and Children Hospital, Guangzhou, China.
Guangdong Province Women and Children Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

problemPreterm delivery is the leading cause of neonatal mortality and contributes to delayed physical and cognitive development in children. At present, there is no efficient therapy to prevent preterm labor. A large body of evidence suggests that infections might play a significant and potentially preventable cause of premature birth. This work assessed the effects of erythropoietin (EPO) in a murine model of inflammation-associated preterm delivery, which mimics central features of preterm infections in humans. METHOD OF STUDY: BALB/c mice were injected i.p. with 20 000 IU/kg EPO or normal saline twice on gestational day (GD) 15, with a 3 hours time interval between injections. An hour after the first EPO or normal saline injection, all mice received two injections of 50 μg/kg LPS, also given 3 hours apart.

resultsEPO significantly prevented preterm labor and increased offspring survival in an LPS induced preterm delivery model. EPO prevented LPS-induced leukocyte infiltration into the placenta. Moreover, EPO inhibited the expression of pro-inflammatory cytokines, interleukin-1β (IL-1β), interleukin-6 (IL-6), and tumour necrosis factor-α (TNF-α) in maternal serum and amniotic fluid. EPO also prevented LPS-induced increase in placental prostaglandin (PG)E2 and uterine inducible nitric oxide synthase (iNOS) production, while decreasing nuclear factor kappa-B (NF-κβ) activity in the myometrium. EPO also increased the gene expression of placental programmed cell death ligand 1 (PD-L1) in LPS-treated mice.

conclusionsOur results suggest that EPO could be a potential novel therapeutic strategy to tackle infection-related preterm labor.

Indexed as

Amniotic FluidAnimalsB7-H1 AntigenCytokinesDinoprostoneErythropoietinFemaleLeukocytesLipopolysaccharidesMice, Inbred BALB CNF-kappa BNitric Oxide Synthase Type IIPlacentaPregnancyPregnancy Complications, InfectiousPremature BirthB7-H1 AntigenCd274 protein, mouseCytokinesDinoprostoneErythropoietinLipopolysaccharidesNF-kappa BNitric Oxide Synthase Type IINos2 protein, mouseerythropoietininflammationoffspring survivalPDL1preterm birthprostaglandins

Identifiers

PMID32506750
PMCPMC7507205
OpenAlexW3033485241

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.