Evidence map›Paper›PMID 35643465›Full record

ArticleBMC pregnancy and childbirth2022

High levels of serum superoxide dismutase as a biomarker of intrahepatic cholestasis of pregnancy in patients with viral hepatitis B.

Fei Wang, Yajuan He, Naijuan Yao, Litao Ruan, Zhen Tian

Open access · goldAbstract read
In one paragraph

Article in BMC pregnancy and childbirth, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

7 citing papers in PubMed, 10 citations in OpenAlex.

  1. Review
  2. Intrahepatic cholestasis of pregnancy.Nature reviews. Disease primers · 2025
    Review
  3. Article
  4. Article
  5. Review
  6. Article
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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

5 authors at 1 institution in 1 country.

Fei Wang *Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi province, Xi'an City, China.
Yajuan He *Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi province, Xi'an City, China.
Naijuan YaoDepartment of Infectious Diseases, The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi province, Xi'an City, China.
Litao RuanDepartment of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi province, Xi'an City, China.
Zhen TianDepartment of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, Shaanxi province, Xi'an City, China. tianzhen@xjtufh.edu.cn.
First Affiliated Hospital of Xi'an Jiaotong University · CN

Funding

National Natural Science Foundation of China 81800548
6 · The paper itself

Abstract

backgroundIntrahepatic cholestasis of pregnancy (ICP) is characterized by skin pruritus and impaired liver function. Hepatitis B virus (HBV) infection increases the risk of developing ICP. HBV infection is associated with oxidative stress, which has been proven to participate in the development of ICP. The goal of this study was to explore the relationship among HBV, oxidative stress, and ICP, and investigate whether a biomarker of oxidative stress may predict the diagnosis and severity of ICP.

methodsWe induced a retrospective cohort of 70 ICP patients from January 2019 to December 2020, and compared their data with those from healthy pregnant women (n = 70). Serum levels of an oxidative stress marker superoxide dismutase (SOD) were examined using an enzyme-linked immunosorbent assay (ELISA). Diagnostic and prognostic values of serum SOD were analyzed by receiver operating characteristic (ROC) curve.

resultsPregnant women in the ICP group had significantly higher level of serum SOD (243.24 ± 12.57 U/L vs 98.70 ± 2.95 U/L, p < 0.01) and a higher rate of HBV infection (51.53% vs 25.71%, p < 0.05) compared with the control group. HBsAg-positive ICP patients had a higher levels of serum SOD (287.24 ± 19.21 U/L vs 196.65 ± 11.75 U/L, p < 0.01) compared with HBsAg-negative ICP patients. A serum SOD level > 121.4 U/mL might be used to predict ICP, while a serum SOD level > 274.6 U/mL might predict ICP severity.

conclusionHBV infection promotes oxidative stress during the pathogenesis of ICP. Serum levels of SOD could be used to predict ICP diagnosis and severity. Modification of oxidative stress might be a treatment target for ICP.

Indexed as

Hepatitis BHepatitis B Surface AntigensBiomarkersCase-Control StudiesCholestasis, IntrahepaticFemaleHepatitis B virusHumansPregnancyPregnancy ComplicationsRetrospective StudiesSuperoxide DismutaseBiomarkersHepatitis B Surface AntigensSuperoxide DismutaseHepatitis B virusIntrahepatic cholestasis of pregnancyOxidative stressSuperoxide dismutase

Identifiers

PMID35643465
PMCPMC9145169
OpenAlexW4281727348

What OpenQuestion holds

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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.