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Titolo:
Developmental profile of the changes in the prothoracicotropic hormone titer in hemolymph of the silkworm Bombyx mori: correlation with ecdysteroid secretion
Autore:
Mizoguchi, A; Ohashi, Y; Hosoda, K; Ishibashi, J; Kataoka, H;
Indirizzi:
Nagoya Univ, Grad Sch Sci, Div Biol Sci, Chikusa Ku, Nagoya, Aichi 4648602, Japan Nagoya Univ Nagoya Aichi Japan 4648602 a Ku, Nagoya, Aichi 4648602, Japan Univ Tokyo, Grad Sch Frontier Sci, Dept Integrated Biosci, Bunkyo Ku, Tokyo 1138657, Japan Univ Tokyo Tokyo Japan 1138657 d Biosci, Bunkyo Ku, Tokyo 1138657, Japan
Titolo Testata:
INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY
fascicolo: 4-5, volume: 31, anno: 2001,
pagine: 349 - 358
SICI:
0965-1748(20010315)31:4-5<349:DPOTCI>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
LAST-LARVAL INSTAR; JUVENILE-HORMONE; MANDUCA-SEXTA; RETROCEREBRAL COMPLEX; BRAIN; ECDYSONE; METAMORPHOSIS; GLANDS; LOCALIZATION; CYNTHIA;
Keywords:
Bombyx mori; prothoracicotropic hormone (PTTH); hemolymph; time-resolved fluoroimmunoassay; ecdysteroid; prothoracic gland; hormone secretion;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Mizoguchi, A Nagoya Univ, Grad Sch Sci, Div Biol Sci, Chikusa Ku, Nagoya, Aichi 4648602, Japan Nagoya Univ Nagoya Aichi Japan 4648602 Aichi 4648602, Japan
Citazione:
A. Mizoguchi et al., "Developmental profile of the changes in the prothoracicotropic hormone titer in hemolymph of the silkworm Bombyx mori: correlation with ecdysteroid secretion", INSEC BIO M, 31(4-5), 2001, pp. 349-358

Abstract

A very sensitive time-resolved fluoroimmunoassay for the prothoracicotropic hormone (PTTH) of the silkworm Bombyx mori has been established. The lower limit of detection in this assay was 0.1 pg. With this assay method, the amounts of PTTH in the central nervous system and hemolymph were quantified. PTTH was detected only in the brain within the central nervous system, and, in the fifth instar, its content in the brain increased gradually with larval growth and decreased rapidly after the beginning of wandering. A substantial amount of PTTH was also found in the retrocerebral complex of day-3fifth instar larvae, accounting for 28% of total PTTH. The PTTH titer in hemolymph changed dramatically during Bombyx development, with a small peak in the middle of the fourth instar, medium-sized peaks at the wandering andprepupal stages in the fifth instar, and a large prolonged peak during early pupal-adult development. The changes were overall closely correlated with those in hemolymph ecdysteroid titer. However, some unexpected aspects ofPTTH dynamics in hemolymph have also been disclosed. Based on these observations, the significance of PTTH secretion in the control of insect development is discussed. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 10:14:44