start-ver=1.4
cd-journal=joma
no-vol=49
cd-vols=
no-issue=2
article-no=
start-page=55
end-page=60
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=2024
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Methylmercury-induced brain neuronal death in CHOP-knockout mice
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Apoptosis is one of the hallmarks of MeHg-induced neuronal cell death; however, its molecular mechanism remains unclear. We previously reported that MeHg exposure induces neuron-specific ER stress in the mouse brain. Excessive ER stress contributes to apoptosis, and CHOP induction is considered to be one of the major mechanisms. CHOP is also increased by MeHg exposure in the mouse brain, suggesting that it correlates with increased apoptosis. In this study, to clarify whether CHOP mediates MeHg-induced apoptosis, we examined the effect of CHOP deletion on MeHg exposure in CHOP-knockout mice. Our data showed that CHOP deletion had no effect on MeHg exposure-induced weight loss or hindlimb impairment in mice, nor did it increase apoptosis or inhibit neuronal cell loss. Hence, CHOP plays little role in MeHg toxicity, and other apoptotic pathways coupled with ER stress may be involved in MeHg-induced cell death.
en-copyright=
kn-copyright=

en-aut-name=IijimaYuta
en-aut-sei=Iijima
en-aut-mei=Yuta
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=MikiRyohei
en-aut-sei=Miki
en-aut-mei=Ryohei
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=FujimuraMasatake
en-aut-sei=Fujimura
en-aut-mei=Masatake
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=OyadomariSeiichi
en-aut-sei=Oyadomari
en-aut-mei=Seiichi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=UeharaTakashi
en-aut-sei=Uehara
en-aut-mei=Takashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

affil-num=1
en-affil=Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=

affil-num=2
en-affil=Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=

affil-num=3
en-affil=Department of Basic Medical Science, National Institute for Minamata Disease
kn-affil=

affil-num=4
en-affil=Division of Molecular Biology, Institute of Advanced Medical Sciences, Tokushima University
kn-affil=

affil-num=5
en-affil=Department of Medicinal Pharmacology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=
en-keyword=Methylmercury
kn-keyword=Methylmercury
en-keyword=Neuronal cell death
kn-keyword=Neuronal cell death
en-keyword=Apoptosis
kn-keyword=Apoptosis
en-keyword=CHOP
kn-keyword=CHOP
en-keyword=Knockout mouse
kn-keyword=Knockout mouse
END