Expression Patterns of Glycoconjugates in the Three Distinctive Olfactory Pathways of the Clawed Frog, Xenopus laevis.

スポンサーリンク

概要

• 論文の詳細を見る

• Xenopus laevis has three distinctive olfactory neuroepithelia. We examined the axonal projection from each of these epithelia to the olfactory bulb by Di-I labeling, and confirmed that the Xenopus primary olfactory pathways involve the dorsal pathway from the olfactory epithelium to the dorsal region of the main olfactory bulb, the ventral pathway from the middle chamber epithelium to the ventral region of the main olfactory bulb, and the vomeronasal pathway from the vomeronasal epithelium to the accessory olfactory bulb. We next examined expression patterns of glycoconjugates in the three olfactory pathways by lectin-histochemistry using 21 biotinylated lectins. Fourteen out of 21 lectins stained the Xenopus primary olfactory system. RCA-I stained the three olfactory pathways uniformly. PHA-E stained only the dorsal pathway. LEL, STL, PNA, ECL and UEA-I stained the dorsal pathway more intensely than the ventral pathway, and among them, only UEA-I stained the vomeronasal pathway. In contrast, s-WGA, DBA, SBA, BSL-I VVA, SJA and PHA-L showed intense stainings in the ventral pathway and moderate stainings in the vomeronasal pathway, but faint or weak stainings in the dorsal pathway. These observations suggest that the ventral pathway expresses glycoconjugates shared commonly with either the dorsal or the vomeronasal pathway. In addition, from the binding patterns of the lectins with a binding specificity for N-acetylgalactosamine, glycoconjugates containing this saccharide seem to play an important role for the organization of the olfactory pathways.

著者

• Taniguchi Kazuyuki

  Department Of Veterinary Anatomy Faculty Of Agriculture Iwate University

• Saito Shouichiro

  Department Of Anatomy And Embryology Ehime University School Of Medicine

• SAITO Shouichiro

  Department of Veterinary Anatomy, Faculty of Agriculture, Iwate University, Iwate 020-8550, Japan

関連論文

• Transient increase of TUNEL-positive cells on postnatal day 20 in the developing rat olfactory bulb
• MECHANISMS OF ARCHENTERON FORMATION IN STARFISH EMBRYOGENESIS : DETERMINATION OF VEGETAL POLE CELLS BY WNT/BETA-CATENIN PATHWAY(Developmental Biology,Abstracts of papers presented at the 74^ Annual Meeting of the Zoological Society of Japan)
• Nuclear localization of β-catenin in vegetal pole cells during early embryogenesis of the starfish Asterina pectinifera
• Generation and Characterization of Monoclonal Antibodies That Specifically Recognize p65/L-Plastin Isoform but Not T-Plastin Isoform
• Differential Expression of Histochemical Characteristics in the Developing Olfactory Receptor Cells in a Flatfish, Barfin Flounder (Verasper moseri)
• Expression Patterns of Glycoconjugates in the Three Distinctive Olfactory Pathways of the Clawed Frog, Xenopus laevis.
• Morphogenesis of the Olfactory Pit in a Flatfish, Barfin Flounder (Verasper moseri)
• Immunohistochemical Studies on the Differential Maturation of Three Types of Olfactory Organs in the Rats.

スポンサーリンク