TY - JOUR
T1 - Prolactin-like immunoreactivity in the granules of neural complex cells in the ascidian Halocynthia roretzi
AU - Terakado, K.
AU - Ogawa, M.
AU - Inoue, K.
AU - Yamamoto, K.
AU - Kikuyama, S.
PY - 1997
Y1 - 1997
N2 - Electron-microscopic studies of the neural complex (neural gland, dorsal strand, and cerebral ganglion) of an ascidian, Halocynthia roretzi, were performed, paying particular attention to the secretory systems. We found that cells scattered along the dorsal strand and neural cells in the cerebral ganglion contained electron-dense secretory granules of variable size. Immunoelectron-microscopic studies with an antiserum to bullfrog prolactin revealed that the secretory granules (100-250 nm in diameter) of some granulated cells contained a prolactin-like substance. Cells belonging to the neural gland and dorsal strand neither contained electron-dense granules nor showed immunoreactivity. The possibility that cells in the cerebral ganglion and those along the dorsal strand are phylogenetic progenitors of vertebrate adenohypophyseal cells is discussed.
AB - Electron-microscopic studies of the neural complex (neural gland, dorsal strand, and cerebral ganglion) of an ascidian, Halocynthia roretzi, were performed, paying particular attention to the secretory systems. We found that cells scattered along the dorsal strand and neural cells in the cerebral ganglion contained electron-dense secretory granules of variable size. Immunoelectron-microscopic studies with an antiserum to bullfrog prolactin revealed that the secretory granules (100-250 nm in diameter) of some granulated cells contained a prolactin-like substance. Cells belonging to the neural gland and dorsal strand neither contained electron-dense granules nor showed immunoreactivity. The possibility that cells in the cerebral ganglion and those along the dorsal strand are phylogenetic progenitors of vertebrate adenohypophyseal cells is discussed.
KW - Cerebral ganglion
KW - Dorsal strand
KW - Granulated cells
KW - Halocynthia roretzi (Tunicata)
KW - Immunoelectron microscopy
KW - Neural complex
KW - Pituitary gland
KW - Prolactin
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U2 - 10.1007/s004410050852
DO - 10.1007/s004410050852
M3 - Article
C2 - 9182601
AN - SCOPUS:0030981522
VL - 289
SP - 63
EP - 71
JO - Zeitschrift für Zellforschung und mikroskopische Anatomie (Vienna, Austria : 1948)
JF - Zeitschrift für Zellforschung und mikroskopische Anatomie (Vienna, Austria : 1948)
SN - 0302-766X
IS - 1
ER -