Evidence map›Paper›PMID 34010664›Full record

ArticleFree radical biology & medicine2021

The antioxidant role of STAT3 in methylmercury-induced toxicity in mouse hypothalamic neuronal GT1-7 cell line.

Beatriz Ferrer, Harshini Suresh, Abel Santamaria, João Batista Rocha, Aaron B Bowman, Michael Aschner

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Free radical biology & medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.9field-weighted citation impact, top 28% 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

6 citing papers in PubMed, 17 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 4 countries.

Beatriz FerrerDepartment of Molecular Pharmacology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, 10461, Bronx, NY, USA. Electronic address: beatriz.ferrervillahoz@einsteinmed.org.
Harshini SureshDepartment of Molecular Pharmacology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, 10461, Bronx, NY, USA. Electronic address: sureshharshini1@gmail.com.
Abel SantamariaLaboratorio de Aminoácidos Excitadores, Instituto Nacional de Neurología y Neurocirugía, 14269, Mexico City, Mexico. Electronic address: absada@yahoo.com.
João Batista RochaDepartment of Biochemistry and Molecular Biology, Universidade Federal de Santa Maria, Santa Maria, Brazil. Electronic address: jbtrocha@gmail.com.
Aaron B BowmanSchool of Health Sciences, Purdue University, West Lafayette, IN, United States. Electronic address: bowma117@purdue.edu.
Michael AschnerDepartment of Molecular Pharmacology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, 10461, Bronx, NY, USA; IM Sechenov First Moscow State Medical University, Moscow, Russia, Institute of Cellular and Intracellular Symbiosis, Russian Academy of Sciences, Orenburg, Russia. Electronic address: Michael.aschner@einsteinmed.org.
Albert Einstein College of Medicine · USInstituto Nacional de Neurología y Neurocirugía · MXPurdue University West Lafayette · USUniversidade Federal de Santa Maria · BR

Funding

WORD PROCESSORP30CA013330 · NCI · YESHIVA UNIVERSITY · PI STEVEN C. ALMO · 1985 to 2026
$111.2M
Mechanisms of Methylmercury Induced Neuron ToxicityR01ES007331 · NIEHS · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI Michael Aschner, Aaron B Bowman · 1996 to 2026
$10.6M
NCI NIH HHS P30 CA013330NIEHS NIH HHS R01 ES007331
6 · The paper itself

Abstract

Oxidative stress, impairment of antioxidant defenses, and disruption of calcium homeostasis are associated with the toxicity of methylmercury (MeHg). Yet, the relative contribution and interdependence of these effects and other molecular mechanisms that mediate MeHg-induced neurotoxicity remain uncertain. The signal transducer and activator of transcription 3 (STAT3) is a transcription factor that regulates the expression of anti-apoptotic and cell cycle progression genes. In addition to its role in cell growth and survival, STAT3 regulates redox homeostasis and prevents oxidative stress by the modulation of nuclear genes that encode for electron transport complexes (ETC) and antioxidant enzymes. Here we tested the hypothesis that STAT3 contributes to the orchestration of the antioxidant defense response against MeHg injury. We show that MeHg (>1 μM) exposure induced STAT3 activation within 1 h and beyond in mouse hypothalamic neuronal GT1-7 cells in a concentration-and time-dependent manner. Pharmacological inhibition of STAT3 phosphorylation exacerbated MeHg-induced reactive oxygen species (ROS) production and antioxidant responses. Finally, treatment with the antioxidant Trolox demonstrated that MeHg-induced STAT3 activation is mediated, at least in part, by MeHg-induced ROS generation. Combined, our results demonstrated a role for the STAT3 signaling pathway as an early response to MeHg-induced oxidative stress.

Indexed as

Methylmercury CompoundsAnimalsAntioxidantsCell LineMiceNeuronsOxidative StressReactive Oxygen SpeciesSTAT3 Transcription FactorAntioxidantsMethylmercury CompoundsReactive Oxygen SpeciesSTAT3 Transcription FactorMethylmercuryNeurotoxicityOxidative stress

Identifiers

PMID34010664
PMCPMC8217327
OpenAlexW3163279339

What OpenQuestion holds

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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.