Acid-sensing ion channels (ASICs) in mammals monitor acid sensing and mechanoreception. They have a widespread expression in the central and peripheral nervous system, including the gut. The distribution of ASICs in zebrafish is known only in larvae and at the mRNA level. Here we have investigated the expression and cell distribution of ASIC2 in the gut of adult zebrafish using PCR, Western blot and immunohistochemistry. ASIC2 mRNA was detected in the gut, and a protein consistent with predicted ASIC2 (64 kDa molecular mass) was detected by Western blot. ASIC2 positivity was found in a subpopulation of myenteric neurons in the enteric nervous system, as well in enteroendocrine epithelial cells. These data demonstrate for the first time the occurrence of ASIC2 in the gut of adult zebrafish where it presumably acts as a chemosensor and a mechanosensor. (C) 2011 Elsevier Ireland Ltd. All rights reserved.
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Sapporo Med Univ, Sch Med, Dept Anat 1, Chuo Ku, Sapporo, Hokkaido 0608556, JapanSapporo Med Univ, Sch Med, Dept Anat 1, Chuo Ku, Sapporo, Hokkaido 0608556, Japan
Kikuchi, Shin
Ninomiya, Takafumi
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机构:Sapporo Med Univ, Sch Med, Dept Anat 1, Chuo Ku, Sapporo, Hokkaido 0608556, Japan
Ninomiya, Takafumi
Kawamata, Tomoyuki
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Sapporo Med Univ, Sch Med, Dept Anesthesiol, Sapporo, Hokkaido 0608556, JapanSapporo Med Univ, Sch Med, Dept Anat 1, Chuo Ku, Sapporo, Hokkaido 0608556, Japan
Kawamata, Tomoyuki
Ogasawara, Noriko
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Sapporo Med Univ, Sch Med, Dept Pathol, Sapporo, Hokkaido 0608556, Japan
Sapporo Med Univ, Sch Med, Dept Otolaryngol, Sapporo, Hokkaido 0608556, JapanSapporo Med Univ, Sch Med, Dept Anat 1, Chuo Ku, Sapporo, Hokkaido 0608556, Japan
Ogasawara, Noriko
Kojima, Takashi
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Sapporo Med Univ, Sch Med, Dept Pathol, Sapporo, Hokkaido 0608556, JapanSapporo Med Univ, Sch Med, Dept Anat 1, Chuo Ku, Sapporo, Hokkaido 0608556, Japan
Kojima, Takashi
Tachi, Nobutada
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Sapporo Med Univ, Sch Hlth Sci, Sapporo, Hokkaido 0608556, JapanSapporo Med Univ, Sch Med, Dept Anat 1, Chuo Ku, Sapporo, Hokkaido 0608556, Japan
Tachi, Nobutada
Tatsumi, Haruyuki
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机构:Sapporo Med Univ, Sch Med, Dept Anat 1, Chuo Ku, Sapporo, Hokkaido 0608556, Japan