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Kuroda R, Shintani-Ishida K, Unuma K, Yoshida KI. Immobilization Stress With α2-Adrenergic Stimulation Induces Regional and Transient Reduction of Cardiac Contraction Through Gi Coupling in Rats. Int Heart J 2015; 56:537-43. [DOI: 10.1536/ihj.15-034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Ryohei Kuroda
- Department of Forensic Medicine, Graduate School of Medicine, The University of Tokyo
| | - Kaori Shintani-Ishida
- Department of Forensic Medicine, Graduate School of Medicine, The University of Tokyo
| | - Kana Unuma
- Section of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Ken-ichi Yoshida
- Department of Forensic Medicine, Graduate School of Medicine, The University of Tokyo
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Genome wide analysis of sex difference in gene expression profiles of bone formations using sfx mice and BXD RI strains. ScientificWorldJournal 2014; 2014:584910. [PMID: 25133246 PMCID: PMC4123512 DOI: 10.1155/2014/584910] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Revised: 06/10/2014] [Accepted: 06/11/2014] [Indexed: 01/30/2023] Open
Abstract
The objective of this study is to identify sex differentially expressed genes in bone using a mouse model of spontaneous fracture, sfx, which lacks the gene for L-gulonolactone oxidase (Gulo), a key enzyme in the ascorbic acid (AA) synthesis pathway. We first identified the genes that are differentially expressed in the femur between female and male in sfx mice. We then analyzed the potential gene network among those differentially expressed genes with whole genome expression profiles generated using spleens of female and male mice of a total of 67 BXD (C57BL/6J X DBA/2J) recombinant inbred (RI) and other strains. Our result indicated that there was a sex difference in the whole genome profiles in sfx mice as measured by the proportion of up- and downregulated genes. Several genes in the pathway of bone development are differentially expressed between the male and female of sfx mice. Comparison of gene network of up- and downregulated bone relevant genes also suggests a sex difference.
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Nagai H, Saka K, Nakajima M, Maeda H, Kuroda R, Igarashi A, Tsujimura-Ito T, Nara A, Komori M, Yoshida KI. Sudden death after sustained restraint following self-administration of the designer drug α-pyrrolidinovalerophenone. Int J Cardiol 2014; 172:263-5. [DOI: 10.1016/j.ijcard.2013.12.262] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 12/30/2013] [Indexed: 11/16/2022]
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Sugihara M, Odagiri F, Suzuki T, Murayama T, Nakazato Y, Unuma K, Yoshida KI, Daida H, Sakurai T, Morimoto S, Kurebayashi N. Usefulness of running wheel for detection of congestive heart failure in dilated cardiomyopathy mouse model. PLoS One 2013; 8:e55514. [PMID: 23383212 PMCID: PMC3561288 DOI: 10.1371/journal.pone.0055514] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Accepted: 01/02/2013] [Indexed: 01/01/2023] Open
Abstract
Background Inherited dilated cardiomyopathy (DCM) is a progressive disease that often results in death from congestive heart failure (CHF) or sudden cardiac death (SCD). Mouse models with human DCM mutation are useful to investigate the developmental mechanisms of CHF and SCD, but knowledge of the severity of CHF in live mice is necessary. We aimed to diagnose CHF in live DCM model mice by measuring voluntary exercise using a running wheel and to determine causes of death in these mice. Methodology/Principal Findings A knock-in mouse with a mutation in cardiac troponin T (ΔK210) (DCM mouse), which results in frequent death with a t1/2 of 70 to 90 days, was used as a DCM model. Until 2 months of age, average wheel-running activity was similar between wild-type and DCM mice (approximately 7 km/day). At approximately 3 months, some DCM mice demonstrated low running activity (LO: <1 km/day) while others maintained high running activity (HI: >5 km/day). In the LO group, the lung weight/body weight ratio was much higher than that in the other groups, and the lungs were infiltrated with hemosiderin-loaded alveolar macrophages. Furthermore, echocardiography showed more severe ventricular dilation and a lower ejection fraction, whereas Electrocardiography (ECG) revealed QRS widening. There were two patterns in the time courses of running activity before death in DCM mice: deaths with maintained activity and deaths with decreased activity. Conclusions/Significance Our results indicate that DCM mice with low running activity developed severe CHF and that running wheels are useful for detection of CHF in mouse models. We found that approximately half of ΔK210 DCM mice die suddenly before onset of CHF, whereas others develop CHF, deteriorate within 10 to 20 days, and die.
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Affiliation(s)
- Masami Sugihara
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Fuminori Odagiri
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takeshi Suzuki
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takashi Murayama
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yuji Nakazato
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kana Unuma
- Section of Forensic Medicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Forensic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Ken-ichi Yoshida
- Department of Forensic Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Daida
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Takashi Sakurai
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Sachio Morimoto
- Department of Clinical Pharmacology, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Nagomi Kurebayashi
- Department of Cellular and Molecular Pharmacology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- * E-mail:
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