Evidence map›Paper›PMID 21859636›Full record

ArticleEnvironmental health perspectives2012

Benzene metabolite 1,2,4-benzenetriol induces halogenated DNA and tyrosines representing halogenative stress in the HL-60 human myeloid cell line.

Takuro Nishikawa, Emiko Miyahara, Masahisa Horiuchi, Kimiko Izumo, Yasuhiro Okamoto, Yoshichika Kawai, Yoshifumi Kawano, Toru Takeuchi

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.6field-weighted citation impact, top 29% 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

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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

4 citing papers in PubMed, 26 citations in OpenAlex.

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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

8 authors at 2 institutions in 1 country.

Takuro NishikawaDepartment of Environmental Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuraga-oka, Kagoshima, Japan. adu44150@ams.odn.ne.jp
Emiko Miyahara
Masahisa Horiuchi
Kimiko Izumo
Yasuhiro Okamoto
Yoshichika Kawai
Yoshifumi Kawano
Toru Takeuchi
Kagoshima University · JPNagoya University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAlthough benzene is known to be myelotoxic and to cause myeloid leukemia in humans, the mechanism has not been elucidated.

objectivesWe focused on 1,2,4-benzenetriol (BT), a benzene metabolite that generates reactive oxygen species (ROS) by autoxidation, to investigate the toxicity of benzene leading to leukemogenesis.

methodsAfter exposing HL-60 human myeloid cells to BT, we investigated the cellular effects, including apoptosis, ROS generation, DNA damage, and protein damage. We also investigated how the cellular effects of BT were modified by hydrogen peroxide (H2O2) scavenger catalase, hypochlorous acid (HOCl) scavenger methionine, and 4-aminobenzoic acid hydrazide (ABAH), a myeloperoxidase (MPO)-specific inhibitor.

resultsBT increased the levels of apoptosis and ROS, including superoxide (O2•-), H2O2, HOCl, and the hydroxyl radical (•OH). Catalase, ABAH, and methionine each inhibited the increased apoptosis caused by BT, and catalase and ABAH inhibited increases in HOCl and •OH. Although BT exposure increased halogenated DNA, this increase was inhibited by catalase, methionine, and ABAH. BT exposure also increased the amount of halogenated tyrosines; however, it did not increase 8-oxo-deoxyguanosine.

conclusionsWe suggest that BT increases H2O2 intracellularly; this H2O2 is metabolized to HOCl by MPO, and this HOCl results in possibly cytotoxic binding of chlorine to DNA. Because myeloid cells copiously express MPO and because halogenated DNA may induce both genetic and epigenetic changes that contribute to carcinogenesis, halogenative stress may account for benzene-induced bone marrow disorders and myeloid leukemia.

Indexed as

Aniline CompoundsApoptosisCatalaseCell Transformation, NeoplasticDNADNA DamageEnzyme InhibitorsHalogenationHL-60 CellsHumansHydroquinonesMethionineReactive Oxygen SpeciesStress, PhysiologicalTyrosine4-aminobenzhydrazideAniline CompoundsCatalaseDNAEnzyme InhibitorsHydroquinoneshydroxyhydroquinoneMethionineReactive Oxygen SpeciesTyrosine

Identifiers

PMID21859636
PMCPMC3261936
OpenAlexW2030522190

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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.