Insect juvenile hormone: from "status quo" to high society

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Insect juvenile hormone: from "status quo" to high society.

Juvenile hormone (JH) exerts pleiotropic functions during insect life cycles. The regulation of JH biosynthesis by neuropeptides and biogenic amines, as well as the transport of JH by specific binding proteins is now well understood. In contrast, comprehending its mode of action on target organs is still hampered by the difficulties in isolating specific receptors. In concert with ecdysteroids,...

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Insect NMDA receptors mediate juvenile hormone biosynthesis.

In vertebrates, the N-methyl-D-aspartate subtype of glutamate receptors (NMDAR) appears to play a role in neuronal development, synaptic plasticity, memory formation, and pituitary activity. However, functional NMDAR have not yet been characterized in insects. We have now demonstrated immunohistochemically glutamatergic nerve terminals in the corpora allata of an adult female cockroach, Diplopt...

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Insect Vitellogenesis in Juvenile Hormone-dependent Species

In most insects, vitellogenesis is regulated by juvenile hormone (JH). The recent cloning of the vitellogenin gene in a number of JH-dependent species has allowed the study of the induction of vitellogenin production by JH at a molecular scale. Potential JH response elements have been described in the regulatory regions of vitellogenin and other JHinducible genes. These elements may not only sh...

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Comparative genomics of insect juvenile hormone biosynthesis.

The biosynthesis of insect juvenile hormone (JH) and its neuroendocrine control are attractive targets for chemical control of insect pests and vectors of disease. To facilitate the molecular study of JH biosynthesis, we analyzed ESTs from the glands producing JH, the corpora allata (CA) in the cockroach Diploptera punctata, an insect long used as a physiological model species and compared them...

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Insect Juvenile Hormone—Chemistry and Action

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ژورنال

عنوان ژورنال: Brazilian Journal of Medical and Biological Research

سال: 2000

ISSN: 0100-879X

DOI: 10.1590/s0100-879x2000000200003