Evidence map›Paper›PMID 40631483›Full record

ArticleBJOG : an international journal of obstetrics and gynaecology2025

Inflammatory Mechanisms of Dysmenorrhea: Novel Insights From Menstrual Effluent in an Adolescent Cohort.

Chandrashekara N Kyathanahalli, Frank F Tu, Kevin M Hellman

Abstract read
In one paragraph

Article in BJOG : an international journal of obstetrics and gynaecology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

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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

6 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

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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

3 authors.

Chandrashekara N KyathanahalliDepartment of Obstetrics and Gynecology, Endeavor Health, Evanston, Illinois, USA.
Frank F TuDepartment of Obstetrics and Gynecology, Endeavor Health, Evanston, Illinois, USA.
Kevin M HellmanDepartment of Obstetrics and Gynecology, Endeavor Health, Evanston, Illinois, USA.ORCID https://orcid.org/0000-0001-9420-5602

Funding

Early Menstrual Pain Impact on Multisensory HypersensitivityR01HD096332 · NICHD · ENDEAVOR HEALTH CLINICAL OPERATIONS · PI TU, FRANK FU-SHENG · 2018 to 2023
$3.6M
Eunice Kennedy Shriver National Institute of Child Health and Human Development R01HD096332NICHD NIH HHS R01 HD096332
6 · The paper itself

Abstract

objectiveTo examine how eicosanoid levels in menstrual effluent of adolescents within 3 years of menarche relate to the severity of menstrual pain.

designProspective cohort study.

settingCommunity teaching hospital. POPULATION OR SAMPLE: Adolescents within 3 years after menarche.

methodsParticipants provided a menstrual effluent sample between 4 and 30 months after menarche. Eicosanoid and oxylipin concentrations were measured in the menstrual effluent. We compared effluent concentrations of participants with menstrual pain (n = 33) to age-matched pain-free controls (n = 18).

main outcome measuresEicosanoid and oxylipin concentrations in menstrual effluent.

resultsParticipants with dysmenorrhea had higher PGF2α (4.5 [1.6, 8.9] ng/mL, p = 0.014) than controls (1.1 [0.07, 4.4] ng/mL). However, differences in PGE2 (7.1 [2.6, 10.1] vs. 3.5 [1.0, 5.1], p = 0.053) and 12-HETE (36.3 [23.7, 60.7] vs. 29.6 [13.4, 51.5], p = 0.305) were not significant. The correlations between PGF2α (r = 0.37, p = 0.004) or PGE2 concentration (r = 0.28, p = 0.046) and menstrual pain intensity were moderate to small. Overall, there were positive correlations between menstrual volume and eicosanoid concentrations (r's > 0.4, p's < 0.001). Participants with dysmenorrhea taking analgesics had more PGF2α (66.2 [43.0, 164.7]) than controls (19.1 [6.0, 47.5], p = 0.04). LC-MS/MS revealed higher concentrations of 12-HETE, 14,15-EET, 15-HETE, 18cdLTB4, LTB4 and PGF2α-and lower 6-kPGF1α-in the effluent of participants with dysmenorrhea compared to controls.

conclusionsElevated PGF2α in adolescents with dysmenorrhea, modest correlations between prostaglandin concentrations and menstrual pain, and the identification of additional oxylipins suggest that inflammatory processes beyond the prostaglandin pathway contribute to dysmenorrhea.

Indexed as

DysmenorrheaEicosanoidsInflammationMenstruationOxylipinsAdolescentCase-Control StudiesDinoprostDinoprostoneFemaleHumansProspective StudiesDinoprostDinoprostoneEicosanoidsOxylipinseicosanoidsmenarchemenstruationoxylipinspelvic painprostaglandins

Identifiers

PMID40631483
PMCPMC12258968

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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.