The present study examined the distribution of the gap junction protein connexin-43 in the dorsal root ganglion (DRG) cells at different stages of the rat prenatal development. Using immunohistochemical methods, we established that the first connexin-43-containing structures are identified in the developing DRG precursor cells starting from the 13th day of prenatal development. At the later stages of development, connexin-43 is present only in satellite glial cells. Sensory neurons do not contain protein. It was shown for the first time that connexin-43 is expressed in the boundary cap cells of the rat spinal cord dorsal root, starting from the 14th day of embryonic development until birth. This fact may indicate the participation of connexin-43 in the processes of establishing connections between the central and peripheral nervous systems during development.
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Tokyo Univ Hosp, Japan Soc Promot Sci, Tokyo 113, JapanUniv Tokyo, Grad Sch Med, Dept Forens Med, Bunkyo Ku, Tokyo 1130033, Japan
Unuma, Kana
Shintani-Ishida, Kaori
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机构:Univ Tokyo, Grad Sch Med, Dept Forens Med, Bunkyo Ku, Tokyo 1130033, Japan
Shintani-Ishida, Kaori
Yahagi, Naoki
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Tokyo Univ Hosp, Dept Emergency & Crit Care Med, Tokyo 113, JapanUniv Tokyo, Grad Sch Med, Dept Forens Med, Bunkyo Ku, Tokyo 1130033, Japan
Yahagi, Naoki
Tsushima, Kensuke
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Tokyo Univ Hosp, Dept Cardiovasc Med, Tokyo 113, JapanUniv Tokyo, Grad Sch Med, Dept Forens Med, Bunkyo Ku, Tokyo 1130033, Japan
Tsushima, Kensuke
Shimosawa, Tatsuo
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Tokyo Univ Hosp, Dept Clin Lab, Tokyo 113, JapanUniv Tokyo, Grad Sch Med, Dept Forens Med, Bunkyo Ku, Tokyo 1130033, Japan
Shimosawa, Tatsuo
Ueyama, Takashi
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Wakayama Med Univ, Dept Anat, Wakayama, Japan
Wakayama Med Univ, Dept Cell Biol, Wakayama, JapanUniv Tokyo, Grad Sch Med, Dept Forens Med, Bunkyo Ku, Tokyo 1130033, Japan
Ueyama, Takashi
Yoshida, Ken-ichi
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Univ Tokyo, Grad Sch Med, Dept Forens Med, Bunkyo Ku, Tokyo 1130033, JapanUniv Tokyo, Grad Sch Med, Dept Forens Med, Bunkyo Ku, Tokyo 1130033, Japan