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ID 111609
Title Alternative
自発的高運動ラットの安静時遺伝子発現パターンと野生型ラット運動時遺伝子発現パターンの違い
Author
Abe, Manami Tokushima University
Matsuo, Yuki Tokushima University
Harada-Sukeno, Akiko Tokushima University
Kitahata, Kanako Tokushima University
Tomida, Chisato Tokushima University
Teshima-Kondo, Shigetada Tokushima University|Osaka Prefecture University KAKEN Search Researchers
Keywords
mitochondria
myofiber type
microarray
metabolism
Content Type
Thesis or Dissertation
Description
The Spontaneously-Running Tokushima Shikoku (SPORTS) strain is an original line derived from Wistar rats, which spontaneously runs >6 km/day on wheels, and has better glucose tolerance and less fat than Wistar rats. However, the molecular mechanism that contributes to the increased metabolic activity in SPORTS rats is unknown. The present study aimed to characterize the gene expression profiles of skeletal muscles in SPORTS rats housed under sedentary (SED) conditions. We found that the expression levels of genes encoding mitochondrial respiratory chain enzymes such as ATP synthase 6 (mt-Atp6) and cytochrome c oxidase subunit 6c (Cox 6c), were higher in the soleus (SOL) muscles of SED SPORTS than in SED Wistar rats. The ratio of type IIa myofibers was higher and glucose tolerance was better in SED SPORTS than in Wistar rats that were sedentary and trained daily on treadmills, respectively. We then investigated candidate genes that might contribute to the better glucose tolerance of SED SPORTS rats using DNA microarray analysis. Among 116 upregulated genes in the SOL muscles of SED SPORTS rats, only 19 were also increased in trained Wistar rats. We focused on v-erb-b2 erythroblastic leukemia viral oncogene homolog 3 (Erbb3), which was associated with glucose transport in myocytes, and found higher expression levels in the SOL muscles of SED SPORTS than in SED Wistar rats. The SOL muscles of SED SPORTS rats also contained more activity of β-hydroxy-acylCoA dehydrogenase, a key enzyme of β-oxidation, indicating enhanced lipid oxidation. These findings suggest that increased metabolic activity in skeletal muscle (especially the SOL muscle) of SPORTS rats is congenital and that gene expression profiles of SPORTS rats and Trained Wistar rats are different.
Journal Title
Advances in Biological Chemistry
ISSN
21622191
21622183
Publisher
Scientific Research Publishing
Volume
8
Issue
1
Start Page
1
End Page
14
Published Date
2018-02-05
Remark
内容要旨・審査要旨・論文本文の公開
本論文は, 著者Manami Abeの学位論文として提出され, 学位審査・授与の対象となっている。
Rights
© 2018 by authors and Scientific Research Publishing Inc.
This work is licensed under the Creative Commons Attribution International License (CC BY 4.0).
http://creativecommons.org/licenses/by/4.0/
EDB ID
DOI (Published Version)
URL ( Publisher's Version )
FullText File
language
eng
TextVersion
ETD
MEXT report number
甲第3145号
Diploma Number
甲栄第254号
Granted Date
2018-03-15
Degree Name
Doctor of Nutritional Science
Grantor
Tokushima University
departments
Medical Sciences