Distribution of 7B2 (secretogranin V)-like immunoreactivity in the Japanese red-bellied newt (Cynops pyrrhogaster) pituitary.
In this study, we examined 7B2 (secretogranin V)-like immunoreactivity (IR) in the Japanese red-bellied newt (Cynops pyrrhogaster) pituitary. Results showed that the pars nervosa was filled with immunoreactive granules. In the pars intermedia, all melanotrophs showed 7B2-IR. In the pars distalis, immunoreactive cells were dispersed, and the 7B2-immunoreactive cells were also immunopositive for the beta-subunit of bullfrog luteinizing hormone (fLHbeta). 7B2-IR co-localized with fLHbeta-IR in the same secretory granules. Our results suggest that 7B2 may participate in the secretion processes of gonadotropins in the pars distalis.
Sato
Ayaka
A
Department of Biology, Fukuoka University of Education, Akamabunkyo-machi 1-1, Munakata, Fukuoka 811-4192, Japan.
Matsumoto
Aya
A
Yamamoto
Toshiharu
T
Tanaka
Shigeyasu
S
Suzuki
Hirohumi
H
D000818:Animals; D005260:Female; D005455:Fluorescent Antibody Technique; D007564:Japan; D037101:Luteinizing Hormone, beta Subunit / Q000378:metabolism; D051859:Neuroendocrine Secretory Protein 7B2 / Q000378:metabolism*; D010858:Pigmentation / Q000502:physiology*; D010902:Pituitary Gland / Q000166:cytology / Q000378:metabolism* / Q000648:ultrastructure; D010903:Pituitary Gland, Anterior / Q000166:cytology / Q000378:metabolism / Q000648:ultrastructure; D010904:Pituitary Gland, Posterior / Q000166:cytology / Q000378:metabolism / Q000648:ultrastructure; D012455:Salamandridae / Q000378:metabolism*; D022142:Secretory Vesicles / Q000378:metabolism / Q000648:ultrastructure
D037101:Luteinizing Hormone, beta Subunit; D051859:Neuroendocrine Secretory Protein 7B2