Evidence map›Paper›PMID 26384003›Full record

ArticleCritical care (London, England)2015

Estrogen administered after cardiac arrest and cardiopulmonary resuscitation ameliorates acute kidney injury in a sex- and age-specific manner.

Mizuko Ikeda, Thomas Swide, Alexandra Vayl, Tim Lahm, Sharon Anderson, Michael P Hutchens

Open access · goldAbstract read
In one paragraph

Article in Critical care (London, England), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 2 pooled it
2.0field-weighted citation impact, top 14% 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

45 citing papers in PubMed, 2 syntheses or guidelines pooled it, 61 citations in OpenAlex.

  1. Aromatase enzyme: Paving the way for exploring aromatization for cardio-renal protection.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2023
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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

6 authors at 3 institutions in 1 country.

Mizuko IkedaDepartment of Anesthesiology and Perioperative Medicine, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239, USA. ikeda@ohsu.edu.
Thomas SwideDepartment of Anesthesiology and Perioperative Medicine, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239, USA. tswide@lion.lmu.edu.
Alexandra VaylDivision of Pulmonary, Critical Care, Sleep and Occupational Medicine, Indiana University School of Medicine, Joseph E. Walther Hall, R3 C400 980 W. Walnut St., Indianapolis, IN, 46202, USA. avayl@umail.iu.edu.
Tim LahmDivision of Pulmonary, Critical Care, Sleep and Occupational Medicine, Indiana University School of Medicine, Joseph E. Walther Hall, R3 C400 980 W. Walnut St., Indianapolis, IN, 46202, USA. tlahm@iu.edu.
Sharon AndersonDepartment of Internal Medicine, Division of Nephrology and Hypertension, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239, USA. anderssh@ohsu.edu.
Michael P HutchensDepartment of Anesthesiology and Perioperative Medicine, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR, 97239, USA. hutchenm@ohsu.edu.
Oregon Health & Science University · USIndiana University – Purdue University Indianapolis · USIndiana University School of Medicine

Funding

Sex Difference in Renal Injury After Cardiac Arrest:Mechanisms of Estrogen ActionK08DK090754 · NIDDK · OREGON HEALTH & SCIENCE UNIVERSITY · PI HUTCHENS, MICHAEL P · 2011 to 2015
$757k
Hypoxia-mediated protective estrogen receptor signaling in pulmonary hypertensionI01BX002042 · VA · VA EASTERN COLORADO HEALTH CARE SYSTEM · PI Tim Lahm · 2014 to 2026
–
BLRD VA I01 BX002042NIDDK NIH HHS DK090754NIDDK NIH HHS K08 DK090754
6 · The paper itself

Abstract

introductionThere is a sex difference in the risk of ischemic acute kidney injury (AKI), and estrogen mediates the protective effect of female sex. We previously demonstrated that preprocedural chronic restoration of physiologic estrogen to ovariectomized female mice ameliorated AKI after cardiac arrest and cardiopulmonary resuscitation (CA/CPR). In the present study, we hypothesized that male mice and aged female mice would benefit from estrogen administration after CA/CPR. We tested the effect of estrogen in a clinically relevant manner by administrating it after CA/CPR.

methodsCA/CPR was performed in young (10-15 weeks), middle-aged (43-48 weeks), and aged (78-87 weeks) C57BL/6 male and female mice. Mice received intravenous 17β-estradiol or vehicle 15 min after resuscitation. Serum chemistries and unbiased stereological assessment of renal injury were completed 24 h after CA. Regional renal cortical blood flow was measured by a laser Doppler, and renal levels of estrogen receptor alpha (ERα) and G protein-coupled estrogen receptor (GPER) were evaluated with immunoblotting.

resultsPost-arrest estrogen administration reduced injury in young males without significant changes in renal blood flow (percentage reduction compared with vehicle: serum urea nitrogen, 30 %; serum creatinine (sCr), 41 %; volume of necrotic tubules (VNT), 31 %; P < 0.05). In contrast, estrogen did not affect any outcomes in young females. In aged mice, estrogen significantly reduced sCr (80 %) and VNT (73 %) in males and VNT (51 %) in females. Serum estrogen levels in aged female mice after CA/CPR were the same as levels in male mice. With age, renal ERα was upregulated in females.

conclusionsEstrogen administration after resuscitation from CA ameliorates renal injury in young males and aged mice in both sexes. Because injury was small, young females were not affected. The protective effect of exogenous estrogen may be detectable with loss of endogenous estrogen in aged females and could be mediated by differences in renal ERs. Post-arrest estrogen administration is renoprotective in a sex- and age-dependent manner.

Indexed as

Acute Kidney InjuryAge FactorsAnimalsBlood Urea NitrogenCardiopulmonary ResuscitationCreatinineEstradiolEstrogensFemaleHeart ArrestIschemiaMaleMiceMice, Inbred C57BLRenal CirculationSex FactorsCreatinineEstradiolEstrogens

Identifiers

PMID26384003
PMCPMC4574460
OpenAlexW2164616186

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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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.