『徳島大学 教育・研究者情報データベース (EDB)』---[学外] /
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種別 (必須): 学術論文 (審査論文) [継承]
言語 (必須): 英語 [継承]
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審査 (推奨): Peer Review [継承]
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学究種別 (推奨):
組織 (推奨): 1.徳島大学.大学院ヘルスバイオサイエンス研究部.再生修復医歯学部門.顎口腔再建医学講座.口腔顎顔面矯正学 (2004年4月1日〜2015年3月31日) [継承]
2.広島大学 [継承]
3.University of Amsterdam [継承]
著者 (必須): 1.川合 暢彦
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2. (英) Ryota Sano (日) (読)
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[継承]
3. (英) J A M Korfage (日) (読)
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学籍番号 (推奨):
[継承]
4. (英) Saika Nakamura (日) (読)
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[継承]
5.田中 栄二 ([徳島大学.大学院医歯薬学研究部.歯学域.口腔科学部門.臨床歯学系.口腔顎顔面矯正学])
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学籍番号 (推奨):
[継承]
6. (英) Tim van Wessel (日) (読)
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[継承]
7. (英) G E J Langenbach (日) (読)
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[継承]
8.丹根 一夫 ([広島大学])
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題名 (必須): (英) Functional characteristics of the rat jaw muscles: daily muscle activity and fiber type composition  (日)    [継承]
副題 (任意):
要約 (任意): (英) Skeletal muscles have a heterogeneous fiber type composition, which reflects their functional demand. The daily muscle use and the percentage of slow-type fibers have been shown to be positively correlated in skeletal muscles of larger animals but for smaller animals there is no information. The examination of this relationship in adult rats was the purpose of this study. We hypothesized a positive relationship between the percentage of fatigue-resistant fibers in each muscle and its total duration of use per day. Fourteen Wistar strain male rats (410-450 g) were used. A radio-telemetric device was implanted to record muscle activity continuously from the superficial masseter, deep masseter, anterior belly of digastric and anterior temporalis muscles. The degree of daily muscle use was quantified by the total duration of muscle activity per day (duty time) exceeding specified levels of the peak activity (2, 5, 20 and 50%). The fiber type composition of the muscles was examined by the myosin heavy chain content of the fibers by means of immunohistochemical staining. At lower activity levels (exceeding 2 and 5% of the peak activity), the duty time of the anterior belly of digastric muscle was significantly (P < 0.01) longer than those of the other muscles. The anterior belly of digastric muscle also contained the highest percentage of slow-type fibers (type I fiber and hybrid fiber co-expressing myosin heavy chain I + IIA) (ca. 11%; P < 0.05). By regression analysis for all four muscles, an inter-muscular comparison showed a positive relationship between the duty time (exceeding 50% of the peak activity) and the percentage of type IIX fibers (P < 0.05), which demonstrate intermediate physiological properties relative to type IIA and IIB fibers. For the jaw muscles of adult male rats, the variations of fiber type composition and muscle use suggest that the muscle containing the largest amounts of slow-type fibers (the anterior belly of digastric muscle) is mainly involved in low-amplitude activities and that the amount of type IIX fibers is positively related to the generation of large muscle forces, validating our hypothesis.  (日)    [継承]
キーワード (推奨): 1. (英) Animals (日) (読) [継承]
2. (英) Electromyography (日) (読) [継承]
3. (英) Male (日) (読) [継承]
4. (英) Masticatory Muscles (日) (読) [継承]
5. (英) Muscle Fibers, Fast-Twitch (日) (読) [継承]
6. (英) Muscle Fibers, Skeletal (日) (読) [継承]
7. (英) Muscle Fibers, Slow-Twitch (日) (読) [継承]
8. (英) Myosin Heavy Chains (日) (読) [継承]
9. (英) Rats (日) (読) [継承]
10. (英) Rats, Wistar (日) (読) [継承]
11. (英) Telemetry (日) (読) [継承]
発行所 (推奨):
誌名 (必須): Journal of Anatomy (Anatomical Society of Australia and New Zealand/Anatomical Society of Great Britain and Ireland/Anatomical Society of Southern Africa)
(pISSN: 0021-8782, eISSN: 1469-7580)

ISSN (任意): 1469-7580
ISSN: 0021-8782 (pISSN: 0021-8782, eISSN: 1469-7580)
Title: Journal of anatomy
Title(ISO): J Anat
Supplier: Anatomical Society
Publisher: Cambridge University Press
 (NLM Catalog  (Wiley  (Scopus  (CrossRef (Scopus information is found. [need login])
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(必須): 656 662 [継承]
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年月日 (必須): 西暦 2009年 10月 6日 (平成 21年 10月 6日) [継承]
URL (任意):
DOI (任意): 10.1111/j.1469-7580.2009.01152.x    (→Scopusで検索) [継承]
PMID (任意): 19811563    (→Scopusで検索) [継承]
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WOS (任意): 000271960600005 [継承]
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備考 (任意): 1.(英) Article.Affiliation: Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima 734-8553, Japan. kamo@dent.tokushima-u.ac.jp  (日)    [継承]
2.(英) Article.PublicationTypeList.PublicationType: Journal Article  (日)    [継承]
3.(英) OtherID: PMC2796788  (日)    [継承]

標準的な表示

和文冊子 ● Nobuhiko Kawai, Sano Ryota, Korfage A M J, Nakamura Saika, Eiji Tanaka, Wessel van Tim, Langenbach E J G and Kazuo Tanne : Functional characteristics of the rat jaw muscles: daily muscle activity and fiber type composition, Journal of Anatomy, Vol.215, No.6, 656-662, 2009.
欧文冊子 ● Nobuhiko Kawai, Sano Ryota, Korfage A M J, Nakamura Saika, Eiji Tanaka, Wessel van Tim, Langenbach E J G and Kazuo Tanne : Functional characteristics of the rat jaw muscles: daily muscle activity and fiber type composition, Journal of Anatomy, Vol.215, No.6, 656-662, 2009.

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