Evidence map›Paper›PMID 22101974›Full record

ArticleDiabetologia2012

Diabetes is associated with impairment of uterine contractility and high Caesarean section rate.

S Al-Qahtani, A Heath, S Quenby, F Dawood, R Floyd, T Burdyga, S Wray

Open access · hybridAbstract read
In one paragraph

Article in Diabetologia, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
3.5field-weighted citation impact, top 8% 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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 57 citations in OpenAlex.

  1. Pooled it
  2. Maternal body mass index and post-term birth: a systematic review and meta-analysis.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2017
    Pooled it
  3. Diabetes mellitus: an independent predictor of duration of prostaglandin labor induction.Journal of perinatology : official journal of the California Perinatal Association · 2017
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  10. Assessment of the hypoglycemic effect ofCurrent research in physiology · 2025
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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

7 authors at 2 institutions in 1 country.

S Al-QahtaniDepartment of Molecular and Cellular Physiology, Institute of Translational Medicine, University of Liverpool, Crown Street, Liverpool L69 3BX, UK.
A Heath
S Quenby
F Dawood
R Floyd
T Burdyga
S Wray
University of Liverpool · GBLiverpool Women's Hospital · GB

Funding

Wellcome Trust
6 · The paper itself

Abstract

aims/hypothesisThe prevalence of births worldwide complicated by diabetes mellitus is increasing. In the UK, for example, <25% of diabetic women have a non-instrumental vaginal delivery. Strikingly, more than half the Caesarean sections (CS) in these patients are non-elective, but the reasons for this are not understood. We have tested the hypothesis that poor myometrial contractility as a consequence of the disease contributes to this high CS rate.

methodsWe compared spontaneous, high K depolarisation and oxytocin-induced contractions from diabetic and matched control patients having an elective CS. To investigate the mechanism of any differences we measured intracellular Ca, and performed western blotting and compared the tissues histologically.

resultsThere was significantly decreased contraction amplitude and duration in uteri from diabetic compared with control patients, even when possible confounders such as BMI were analysed. Reduced intracellular calcium signals and expression of calcium entry channels were found in uteruses from diabetic patients, which, along with a reduction in muscle content found on histological examination, could explain the reduced force. Myometrium from diabetic patients was responsive to oxytocin, but still did not reach the levels found in non-diabetic patients. CONCLUSIONS/INTERPRETATIONS: These are the first data investigating myometrium in diabetic patients and they support the hypothesis that there is poorer contractility even in the presence of oxytocin. The underlying mechanism is related to reduced Ca channel expression and intracellular calcium signals and a decrease in muscle mass. We conclude that these factors significantly contribute to the increased emergency CS rate in diabetic patients.

Indexed as

AdultBody Mass IndexCalciumCalcium ChannelsCesarean SectionDiabetes ComplicationsDiabetes, GestationalDiabetes MellitusFemaleHumansOxytocinPregnancyPregnancy ComplicationsSignal TransductionUterine ContractionCalciumCalcium ChannelsOxytocin

Identifiers

PMID22101974
PMCPMC3245824
OpenAlexW2026333059

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.