Results 251 to 260 of about 61,893 (297)

Crystallization of the ‘Brain’ Hormone of an Insect

Nature, 1962
THE extraction of the ‘brain’ hormone from the dissected pupal ‘brain’ in the silkworm, Bombyx mori, was carried out by Kobayashi and Kirimura1. Since then about 500,000 ‘brains’ dissected out free of corpora cardiaca and corpora allata of pupae have been used as material in the purification of the hormone.
M, KOBAYASHI, J, KIRIMURA, M, SAITO
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Studies on insect adipokinetic hormones

General and Comparative Endocrinology, 1972
An adipokinetic factor is present in the corpora cardiaca of Schistocerca gregaria, Locusta migratoria, Periplaneta americana, and Tenebrio molitor. A large in vivo adipokinetic response can be demonstrated in the locusts and the mealworm, but not in the cockroaches Periplaneta americana and Gromphadorhina portentosa.
G J, Goldsworthy, W, Mordue, J, Guthkelch   +2 more
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The activation hormone of the metamorphosis of insects

General and Comparative Endocrinology, 1962
Abstract 1. 1. Injection experiments with brain extracts and isolated neurohormones of Periplaneta americana together with implantation of immature ring glands of Calliphora in half larvae of Calliphora have thrown light on the character of the activation hormone of insect metamorphosis. 2. 2.
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Morphogenetic Action of Insect Hormones

Annual Review of Entomology, 1974
Two classes of hormones-ecdysones and juvenile hormones (JH)-regulate the morphogenetic changes of insect metamorphosis. Recent advances in structural analysis and synthesis have resulted in the ready availability of synthetic forms, analogues, and mimics of these hormones; and there has already been considerable speculation on their molecular modes of
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Neurosecretory hormones in insects

Endeavour, 1985
Abstract Although the existence of hormones in insects has been known for many years, it is only comparatively recently — with the benefit of sensitive new techniques of assay, isolation, and sequencing — that an overall picture of their nature has begun to emerge.
Graham Goldsworthy, Colin Wheeler
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Hormones to kill insects

Nature, 1974
Insect Hormones and Bioanalogues. By K. Slama, M. Romanuk and F. Sorm. Pp. ix+447. (Springer-Verlag, Vienna and New York, 1974.) $45.90.
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INSECT HORMONES IN DEVELOPMENT

Biological Reviews, 1981
SummaryAdvances in studies of prothoracicotropic hormone (ecdysiotropin), ecdysteroids and juvenile hormones in the past decade are considered:1. Until recently there has been little progress with prothoracicotropic hormone. The development of a sensitive bioassay for the hormone promises to produce rapid advances.2. Current methods of hormone analysis
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Biochemical Studies on Insect Hormones

1956
Publisher Summary The present knowledge of insect hormones can be compared with that of vertebrate hormones available in about 1920. The presence of hormones in the insect kingdom is generally recognized; their centers of production, the endocrine glands, and their physiological effects have been studied in detail by the classical methods of hormone ...
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Hormones and Insect Behavior

1974
In insects, hormones are involved in the regulation of behavior to a greater extent than in other invertebrate or vertebrate groups. This extensive adoption of hormonal involvement in the function of the nervous system may be partially due to size restrictions and to the rich behavioral repertoires which insects characteristically show.
L. M. Riddiford, J. W. Truman
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NEUROSECRETORY HORMONES IN INSECTS

Journal of Endocrinology, 1974
G J, Goldsworthy, W, Mordue
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