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Identification of Boar Testis as a Source and Target Tissue of Relaxin

Authors

  • Tetsuya Kohsaka,

    1. Laboratory of Animal Reproduction, Faculty of Agriculture, Shizuoka University, Shizuoka 422-8529, Japan
    2. Division of Animal Resource Production, The United Graduate School of Agricultural Science, Gifu University, Gifu 501-1193, Japan
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  • Shinichi Kato,

    1. Laboratory of Animal Reproduction, Faculty of Agriculture, Shizuoka University, Shizuoka 422-8529, Japan
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  • Si Qin,

    1. Division of Animal Resource Production, The United Graduate School of Agricultural Science, Gifu University, Gifu 501-1193, Japan
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  • Itaru Minagawa,

    1. Laboratory of Animal Reproduction, Faculty of Agriculture, Shizuoka University, Shizuoka 422-8529, Japan
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  • Keiichiro Yogo,

    1. Laboratory of Animal Reproduction, Faculty of Agriculture, Shizuoka University, Shizuoka 422-8529, Japan
    2. Division of Animal Resource Production, The United Graduate School of Agricultural Science, Gifu University, Gifu 501-1193, Japan
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  • Tatsuo Kawarasaki,

    1. Shizuoka Swine and Poultry Experimental Station, Kikugawa 439-0037, Japan
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  • Hiroshi Sasada

    1. Laboratory of Animal Reproduction, Graduate School of Agricultural Science, Tohoku University, Sendai 981-8555, Japan
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Address for correspondence: Dr. Tetsuya Kohsaka, Laboratory of Animal Reproduction and Physiology, Department of Applied Biological Sciences, Faculty of Agriculture, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka-city, Shizuoka 422-8529, Japan. Voice: +81-54-238-4869; fax: +81-54-237-3028. t-kohsaka@agr.shizuoka.ac.jp

Abstract

The expression and cellular localization of relaxin and its own receptor, LGR7/RXFP1, were demonstrated in the boar testis, where relaxin was produced by the Leydig cells as 18-kDa pro-relaxin and LGR7/RXFP1 was detected in both Leydig cells and seminiferous epithelial cells, suggesting that a functional relaxin–LGR7/RXFP1 hormone–receptor network operates within the boar testis.

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