start-ver=1.4
cd-journal=joma
no-vol=134
cd-vols=
no-issue=20
article-no=
start-page=2771
end-page=2787
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=20201030
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Inhibition of interleukin-6 signaling attenuates aortitis, left ventricular hypertrophy and arthritis in interleukin-1 receptor antagonist deficient mice
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=The aim of the present study was to examine whether inhibition of Interleukin (IL)-6 signaling by MR16-1, an IL-6 receptor antibody, attenuates aortitis, cardiac hypertrophy, and arthritis in IL-1 receptor antagonist deficient (IL-1RA KO) mice. Four weeks old mice were intraperitoneally administered with either MR16-1 or non-immune IgG at dosages that were adjusted over time for 5 weeks. These mice were stratified into four groups: MR16-1 treatment groups, KO/MR low group (first 2.0 mg, following 0.5 mg/week, n=14) and KO/MR high group (first 4.0 mg, following 2.0 mg/week, n=19) in IL-1RA KO mice, and IgG treatment groups, KO/IgG group (first 2.0 mg, following 1.0 mg/week, n=22) in IL-1RA KO mice, and wild/IgG group (first 2.0 mg, following 1.0 mg/week, n=17) in wild mice. Aortitis, cardiac hypertrophy and arthropathy were histologically analyzed. Sixty-eight percent of the KO/IgG group developed aortitis (53% developed severe aortitis). In contrast, only 21% of the KO/MR high group developed mild aortitis, without severe aortitis (P<0.01, vs KO/IgG group). Infiltration of inflammatory cells, such as neutrophils, T cells, and macrophages, was frequently observed around aortic sinus of the KO/IgG group. Left ventricle and cardiomyocyte hypertrophy were observed in IL-1RA KO mice. Administration of high dosage of MR16-1 significantly suppressed cardiomyocyte hypertrophy. MR16-1 attenuated the incidence and severity of arthritis in IL-1RA KO mice in a dose-dependent manner. In conclusion, blockade of IL-6 signaling may exert a beneficial effect to attenuate severe aortitis, left ventricle hypertrophy, and arthritis.
en-copyright=
kn-copyright=

en-aut-name=HadaYoshiko
en-aut-sei=Hada
en-aut-mei=Yoshiko
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=UchidaHaruhito A.
en-aut-sei=Uchida
en-aut-mei=Haruhito A.
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=MukaiTomoyuki
en-aut-sei=Mukai
en-aut-mei=Tomoyuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=KojimaFumiaki
en-aut-sei=Kojima
en-aut-mei=Fumiaki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=YoshidaMasashi
en-aut-sei=Yoshida
en-aut-mei=Masashi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=TakeuchiHidemi
en-aut-sei=Takeuchi
en-aut-mei=Hidemi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

en-aut-name=KakioYuki
en-aut-sei=Kakio
en-aut-mei=Yuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=7
ORCID=

en-aut-name=OtakaNozomu
en-aut-sei=Otaka
en-aut-mei=Nozomu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=8
ORCID=

en-aut-name=MoritaYoshitaka
en-aut-sei=Morita
en-aut-mei=Yoshitaka
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=9
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=10
ORCID=

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

affil-num=2
en-affil=Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Science
kn-affil=

affil-num=3
en-affil=Department of Rheumatology, Kawasaki Medical School
kn-affil=

affil-num=4
en-affil=Department of Pharmacology, Kitasato University School of Allied Health Sciences
kn-affil=

affil-num=5
en-affil=Department of Chronic Kidney Disease and Cardiovascular Disease, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Science
kn-affil=

affil-num=6
en-affil=Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Science
kn-affil=

affil-num=7
en-affil=Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Science
kn-affil=

affil-num=8
en-affil=Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Science
kn-affil=

affil-num=9
en-affil=Department of Rheumatology, Kawasaki Medical School
kn-affil=

affil-num=10
en-affil=Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Science
kn-affil=
en-keyword= MR16-1
kn-keyword= MR16-1
en-keyword=interleukin-1 receptor antagonist
kn-keyword=interleukin-1 receptor antagonist
en-keyword=aortitis
kn-keyword=aortitis
en-keyword=arthritis
kn-keyword=arthritis
en-keyword=LV hypertrophy
kn-keyword=LV hypertrophy
END