Results 241 to 250 of about 110,578 (299)

The morphostatic actions of juvenile hormone

Insect Biochemistry and Molecular Biology, 2007
The maintenance of "status quo" in larvae by juvenile hormone (JH) involves both the programming of ecdysteroid-dependent synthesis during the molt and the suppression of morphogenetic growth during the intermolt. The latter morphostatic action does not require ecdysteroids, and has been studied in the formation of imaginal discs in Manduca sexta ...
James W Truman, Lynn M Riddiford
exaly   +3 more sources

The use of a juvenile hormone binding protein for the quantitative assay of juvenile hormone

Insect Biochemistry and Molecular Biology, 1995
The suitability of the haemolymph juvenile hormone binding protein (JHBP) of Locusta migratoria for use in a competition assay for juvenile hormone (JH) III has been investigated, and a simple quantitative assay procedure using this protein has been developed.
A V, Glinka, R P, Braun, J P, Edwards, G R, Wyatt   +3 more
openaire   +2 more sources

Juvenile fibromatosis: hormonal receptors

International Journal of Pediatric Otorhinolaryngology, 1993
Aggressive juvenile fibromatosis, though allegedly a benign process, is as frustrating to manage as it is perplexing to comprehend. The treatment is primarily surgical, with chemotherapy and radiation therapy recently finding support as adjuncts in selected circumstances.
J, Maddalozzo, L T, Tenta, L R, Hutchinson, S E, Crawford, D S, Morse   +4 more
openaire   +2 more sources

Juvenile hormone esterase is a biochemical anti-juvenile hormone agent

Insect Biochemistry, 1990
Juvenile hormone esterase, purified by affinity chromatography from the larval hemolymph of Manduca sexta in the fifth stadium, was injected into larvae of the same species in the earlier stadia resulting in a blackening of the cuticle following ecdysis to the next larval stadium.
Matthew L. Philpott, Bruce D. Hammock
openaire   +1 more source

Peptides with Juvenile Hormone Activity

Science, 1970
Peptide derivatives of juvenile hormone analogs which show substantial hormonal activity for certain insects were prepared. The most active compound, L-isoleucyl-L-alanyl- p -aminobenzoic acid ethyl ester, was up to twice as active as juvabione.
M, Zaoral, K, Sláma
openaire   +2 more sources

Juvenil- and Steroid-Hormone

2013
Mevalonsaure ist der Vorlaufer, aus denen in allen Tierarten Squalen und Cholesterin oder davon abgewandte Strukturen gebildet werden. Das sind einerseits bei den Wirbeltieren die Steroidhormone und Vitamin D3, bei Nichtwirbeltieren und auch Pflanzen Cholesterolderivate, und bei Ecdysocoa noch das Juvenilhormon, dessen Bildung nicht uber Squalen ...
Bernhard Kleine, Winfried G. Rossmanith
openaire   +1 more source

Activity of juvenile hormone and juvenile hormone analogues on the growth of Trypanosoma cruzi

The Journal of Steroid Biochemistry and Molecular Biology, 1996
The effects of juvenile hormone-III (JH-III) and the juvenile hormone analogues (JHA) methoprene and fenoxycarb on the growth and macromolecular biosynthesis in Trypanosoma cruzi were studied in vitro. It was observed that JH-III and JHA blocked growth and 3H-thymidine incorporation without killing the cells within certain concentrations (< or = 1 x 10(
openaire   +2 more sources

Regulation of the Juvenile Hormone Titer

Annual Review of Entomology, 1981
Juvenile hormone (JH) is produced by the corpora allata (CA) of insects. It regulates development and reproduction and also plays a crucial role in polymorphism. These functions have been amply reviewed (13, 21, 23, 29, 30, 112, 141). However, little information is available on the mechanisms of these effects, mainly because of the difficulty in ...
de Kort, C.A.D., Granger, N.A.
openaire   +2 more sources

The Juvenile Hormone Receptor and Molecular Mechanisms of Juvenile Hormone Action

2014
Abstract Juvenile hormone (JH) is a critical regulator of insect development and physiology, widely known for its ability to delay metamorphosis. The mechanisms underlying the action of JH have been poorly understood, partly as a result of difficulties identifying the JH receptor.
Edward B. Dubrovsky, Travis J. Bernardo
openaire   +1 more source

Morphogenetic effects of juvenile hormone and juvenile hormone mimics on adult development of Drosophila

Journal of Insect Physiology, 1973
Abstract The morphogenetic effects of t,t -farnesol, Law-Williams juvenile hormone analogue, dichlorofarnesenic acid ethyl ester (DFAEE), and a syntetic racemic or isomeric mixture of C 18 juvenile hormone (JH), when applied topically to pharate pupae and adults of D. melanogaster have been studied.
openaire   +2 more sources