start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=822
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230103
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Cycloartenyl Ferulate Is the Predominant Compound in Brown Rice Conferring Cytoprotective Potential against Oxidative Stress-Induced Cytotoxicity
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Since brown rice extract is a rich source of biologically active compounds, the present study is aimed to quantify the major compounds in brown rice and to compare their cytoprotective potential against oxidative stress. The content of the main hydrophobic compounds in brown rice followed the order of cycloartenyl ferulate (CAF) (89.00 +/- 8.07 nmol/g) >> alpha-tocopherol (alpha T) (19.73 +/- 2.28 nmol/g) > gamma-tocotrienol (gamma T3) (18.24 +/- 1.41 nmol/g) > alpha-tocotrienol (alpha T3) (16.02 +/- 1.29 nmol/g) > gamma-tocopherol (gamma T) (3.81 +/- 0.40 nmol/g). However, the percent contribution of CAF to the radical scavenging activity of one gram of whole brown rice was similar to those of alpha T, alpha T3, and gamma T3 because of its weaker antioxidant activity. The CAF pretreatment displayed a significant cytoprotective effect on the hydrogen peroxide-induced cytotoxicity from 10 mu M, which is lower than the minimal concentrations of alpha T and gamma T required for a significant protection. CAF also enhanced the nuclear factor erythroid 2-related factor 2 (Nrf2) nuclear translocation coincided with the enhancement of the heme oxygenase-1 (HO-1) mRNA level. An HO-1 inhibitor, tin protoporphyrin IX (SnPP), significantly impaired the cytoprotection of CAF. The cytoprotective potential of CAF is attributable to its cycloartenyl moiety besides the ferulyl moiety. These results suggested that CAF is the predominant cytoprotector in brown rice against hydrogen peroxide-induced cytotoxicity.
en-copyright=
kn-copyright=

en-aut-name=WuHongyan
en-aut-sei=Wu
en-aut-mei=Hongyan
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=NakamuraToshiyuki
en-aut-sei=Nakamura
en-aut-mei=Toshiyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=GuoYingnan
en-aut-sei=Guo
en-aut-mei=Yingnan
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=MatsumotoRiho
en-aut-sei=Matsumoto
en-aut-mei=Riho
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=MunemasaShintaro
en-aut-sei=Munemasa
en-aut-mei=Shintaro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=MurataYoshiyuki
en-aut-sei=Murata
en-aut-mei=Yoshiyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=NakamuraYoshimasa
en-aut-sei=Nakamura
en-aut-mei=Yoshimasa
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

affil-num=1
en-affil=School of Food Science and Technology, Dalian Polytechnic University
kn-affil=

affil-num=2
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=3
en-affil=School of Food Science and Technology, Dalian Polytechnic University
kn-affil=

affil-num=4
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=5
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=6
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=

affil-num=7
en-affil=Graduate School of Environmental and Life Science, Okayama University
kn-affil=
en-keyword=cycloartenyl ferulate
kn-keyword=cycloartenyl ferulate
en-keyword=antioxidative effect
kn-keyword=antioxidative effect
en-keyword=cytoprotective potential
kn-keyword=cytoprotective potential
en-keyword=heme oxygenase-1
kn-keyword=heme oxygenase-1
en-keyword=nuclear factor erythroid 2-related factor 2
kn-keyword=nuclear factor erythroid 2-related factor 2
END

start-ver=1.4
cd-journal=joma
no-vol=24
cd-vols=
no-issue=1
article-no=
start-page=755
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2023
dt-pub=20230101
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Metformin and Its Immune-Mediated Effects in Various Diseases
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Metformin has been a long-standing prescribed drug for treatment of type 2 diabetes (T2D) and its beneficial effects on virus infection, autoimmune diseases, aging and cancers are also recognized. Metformin modulates the differentiation and activation of various immune-mediated cells such as CD4+ and CD+8 T cells. The activation of adenosine 5 '-monophosphate-activated protein kinase (AMPK) and mammalian target of rapamycin complex 1 (mTORC1) pathway may be involved in this process. Recent studies using Extracellular Flux Analyzer demonstrated that metformin alters the activities of glycolysis, oxidative phosphorylation (OXPHOS), lipid oxidation, and glutaminolysis, which tightly link to the modulation of cytokine production in CD4+ and CD+8 T cells in various disease states, such as virus infection, autoimmune diseases, aging and cancers.
en-copyright=
kn-copyright=

en-aut-name=NojimaIchiro
en-aut-sei=Nojima
en-aut-mei=Ichiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=WadaJun
en-aut-sei=Wada
en-aut-mei=Jun
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

affil-num=1
en-affil=Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=

affil-num=2
en-affil=Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
kn-affil=
en-keyword=CD8 T cells
kn-keyword=CD8 T cells
en-keyword=AMPK
kn-keyword=AMPK
en-keyword=mTORC
kn-keyword=mTORC
en-keyword=OXPHOS
kn-keyword=OXPHOS
en-keyword=autoimmune disease
kn-keyword=autoimmune disease
en-keyword=aging
kn-keyword=aging
en-keyword=cancer
kn-keyword=cancer
END