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The I{kappa}B kinase {beta}/nuclear factor {kappa}B signaling pathway protects the heart from hemodynamic stress mediated by the regulation of manganese superoxide dismutase expression.
Circ Res. 2009 Jul 02; 105(1):70-9.CircR

Abstract

Cardiomyocyte death plays an important role in the pathogenesis of heart failure. The nuclear factor (NF)-kappaB signaling pathway regulates cell death, however, the effect of NF-kappaB pathway on cell death can vary in different cells or stimuli. The purpose of the present study was to clarify the in vivo role of the NF-kappaB pathway in response to pressure overload. First, we subjected C57Bl6/J mice to pressure overload by means of transverse aortic constriction (TAC) and examined the activity of the NF-kappaB pathway in response to pressure overload. IkappaB kinase (IKK) and NF-kappaB were activated after TAC. Then, we investigated the role of the activation using cardiac-specific IKKbeta-deficient mice (CKO). CKO displayed normal global cardiac structure and function compared with control littermates. We subjected CKO and control mice to pressure overload. One week after TAC, CKO showed cardiac dilation, dysfunction, and lung congestion, which are characteristics of heart failure. The number of apoptotic cells in the hearts of CKO mice increased significantly after TAC. The levels of manganese superoxide dismutase mRNA and protein expression in CKO after TAC were significantly attenuated compared with control mice. The levels of oxidative stress and c-Jun N-terminal kinase (JNK) activation in CKO after TAC were significantly greater than those in control mice. Isoproterenol-induced cell death of isolated adult CKO cardiomyocytes was inhibited by treatment with either a manganese superoxide dismutase mimetic or a JNK inhibitor. Thus, the IKKbeta/NF-kappaB signaling pathway plays a protective role in cardiomyocytes because of the attenuation of oxidative stress and JNK activation in a setting of acute pressure overload.

Authors+Show Affiliations

Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19478205

Citation

Hikoso, Shungo, et al. "The I{kappa}B Kinase {beta}/nuclear Factor {kappa}B Signaling Pathway Protects the Heart From Hemodynamic Stress Mediated By the Regulation of Manganese Superoxide Dismutase Expression." Circulation Research, vol. 105, no. 1, 2009, pp. 70-9.
Hikoso S, Yamaguchi O, Nakano Y, et al. The I{kappa}B kinase {beta}/nuclear factor {kappa}B signaling pathway protects the heart from hemodynamic stress mediated by the regulation of manganese superoxide dismutase expression. Circ Res. 2009;105(1):70-9.
Hikoso, S., Yamaguchi, O., Nakano, Y., Takeda, T., Omiya, S., Mizote, I., Taneike, M., Oka, T., Tamai, T., Oyabu, J., Uno, Y., Matsumura, Y., Nishida, K., Suzuki, K., Kogo, M., Hori, M., & Otsu, K. (2009). The I{kappa}B kinase {beta}/nuclear factor {kappa}B signaling pathway protects the heart from hemodynamic stress mediated by the regulation of manganese superoxide dismutase expression. Circulation Research, 105(1), 70-9. https://doi.org/10.1161/CIRCRESAHA.108.193318
Hikoso S, et al. The I{kappa}B Kinase {beta}/nuclear Factor {kappa}B Signaling Pathway Protects the Heart From Hemodynamic Stress Mediated By the Regulation of Manganese Superoxide Dismutase Expression. Circ Res. 2009 Jul 2;105(1):70-9. PubMed PMID: 19478205.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The I{kappa}B kinase {beta}/nuclear factor {kappa}B signaling pathway protects the heart from hemodynamic stress mediated by the regulation of manganese superoxide dismutase expression. AU - Hikoso,Shungo, AU - Yamaguchi,Osamu, AU - Nakano,Yuko, AU - Takeda,Toshihiro, AU - Omiya,Shigemiki, AU - Mizote,Isamu, AU - Taneike,Manabu, AU - Oka,Takafumi, AU - Tamai,Takahito, AU - Oyabu,Jota, AU - Uno,Yoshihiro, AU - Matsumura,Yasushi, AU - Nishida,Kazuhiko, AU - Suzuki,Keiichiro, AU - Kogo,Mikihiko, AU - Hori,Masatsugu, AU - Otsu,Kinya, Y1 - 2009/05/28/ PY - 2009/5/30/entrez PY - 2009/5/30/pubmed PY - 2009/8/4/medline SP - 70 EP - 9 JF - Circulation research JO - Circ Res VL - 105 IS - 1 N2 - Cardiomyocyte death plays an important role in the pathogenesis of heart failure. The nuclear factor (NF)-kappaB signaling pathway regulates cell death, however, the effect of NF-kappaB pathway on cell death can vary in different cells or stimuli. The purpose of the present study was to clarify the in vivo role of the NF-kappaB pathway in response to pressure overload. First, we subjected C57Bl6/J mice to pressure overload by means of transverse aortic constriction (TAC) and examined the activity of the NF-kappaB pathway in response to pressure overload. IkappaB kinase (IKK) and NF-kappaB were activated after TAC. Then, we investigated the role of the activation using cardiac-specific IKKbeta-deficient mice (CKO). CKO displayed normal global cardiac structure and function compared with control littermates. We subjected CKO and control mice to pressure overload. One week after TAC, CKO showed cardiac dilation, dysfunction, and lung congestion, which are characteristics of heart failure. The number of apoptotic cells in the hearts of CKO mice increased significantly after TAC. The levels of manganese superoxide dismutase mRNA and protein expression in CKO after TAC were significantly attenuated compared with control mice. The levels of oxidative stress and c-Jun N-terminal kinase (JNK) activation in CKO after TAC were significantly greater than those in control mice. Isoproterenol-induced cell death of isolated adult CKO cardiomyocytes was inhibited by treatment with either a manganese superoxide dismutase mimetic or a JNK inhibitor. Thus, the IKKbeta/NF-kappaB signaling pathway plays a protective role in cardiomyocytes because of the attenuation of oxidative stress and JNK activation in a setting of acute pressure overload. SN - 1524-4571 UR - https://www.unboundmedicine.com/medline/citation/19478205/The_I{kappa}B_kinase_{beta}/nuclear_factor_{kappa}B_signaling_pathway_protects_the_heart_from_hemodynamic_stress_mediated_by_the_regulation_of_manganese_superoxide_dismutase_expression_ L2 - https://www.ahajournals.org/doi/10.1161/CIRCRESAHA.108.193318?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -