The Effect of Swimming on Cartilage Formation.

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概要

• 論文の詳細を見る

• Swimming is a non-weight-bearing exercise. Therefore it has the advantage of maintaining skeletal integrity in aged persons with weakened skeletal structures. Unlike other weight-bearing aerobic exercises, however, it does not appear to exert sufficient stimu-lus on bone-remodeling activities because the local load-bearing on bone tissues is mild. The purpose of this study was to investigate the effect of swimming on bone remodeling, espe-cially with the use of implanted pellets containing bone morphogenetic protein (BMP) and demineralized bone matrix during the initial stages of the differentiation of mesenchymal cells to cartilage cells. Six-week-old female rats were divided into the swimming group and a control, nonswimming group. Test animals were forced to swim in a water bath for 30min daily for 2 wk. After the swimming protocol, pellets were implanted and harvested. Messenger RNA isolated from pellets was quantified by means of a reverse transcription-polymerase chain reaction. The expression of RNAs for bone sialoprotein and BMP-6 in pel-lets from the swimming group was apparently enhanced at 7 d after implantation. These re-sults suggested that systemic hormonal and/or metabolic changes that promote cartilage formation might have occurred after swimming because the effect was observed after the swimming protocol had ended and the pellets were implanted at a non-weight-bearing site.

• 財団法人 学会誌刊行センターの論文

著者

• Ezawa Ikuko

  Department Of Food And Nutrition Japan Women's University

• Oida Shinichiro

  Department Of Biochemistry Faculty Of Dentistry Tokyo Medical And Dental University

• Maruoka Yutaka

  Department Of Oral Restitution Oral Surgery Division Of Oral Health Sciences Graduate School Tokyo M

• Asahi Kumiko

  Department Of Food And Nutrition Japan Women's University

• IIMURA Tadahiro

  Department of Biochemistry, Faculty of Dentistry, Tokyo Medical

• GOSEKI-SONE Masae

  Department of Biochemistry, Faculty of Dentistry, Tokyo Medical

• Yamada Asako

  Department of Biophysical Chemistry, Kyoto Pharmaceutical University

• MARUOKA Yutaka

  Department of Oral Restitution, Oral Surgery, Division of Oral Health Sciences

• IIMURA Tadahiro

  Department of Molecular Craniofacial Embryology, Graduate School, Tokyo Medical and Dental University

• EZAWA Ikuko

  Department of Biochemistry, Faculty of Dentistry, Tokyo Medical and Dental University

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