86836-08-0

Usage

Uses

Used in Insect Development Research:
Eclosion hormone is used as a research tool for understanding the complex processes of insect development, molting, and metamorphosis. It helps scientists study the underlying mechanisms and neural pathways involved in these processes, which can contribute to the development of novel pest control strategies and agricultural practices.
Used in Insect Behavior Studies:
Eclosion hormone is used as a research compound to investigate the neural and molecular basis of insect behavior, particularly ecdysis behavior and postecdysis processes. This knowledge can provide insights into the evolution of insect behavior and inform the development of targeted pest management techniques.
Used in Pharmaceutical Development:
Eclosion hormone may be used as a potential target for the development of new pharmaceuticals aimed at controlling insect populations or treating insect-borne diseases. By modulating the activity of eclosion hormone or its associated pathways, researchers can explore the possibility of creating novel insecticides or therapies to combat insect-related health issues.
Used in Agricultural Practices:
Eclosion hormone can be used as a component in integrated pest management strategies, where understanding the hormonal control of insect development and behavior can lead to more effective and targeted pest control methods. This can result in reduced reliance on chemical pesticides and more sustainable agricultural practices.

Structure

Sequences of EH in arthropods are highly conserved with six cysteine residues. EH of M. sexta is a 62-aa peptide that has three disulfide bonds, Cys14-Cys38, Cys18-Cys34, and Cys21-Cys49.

?Properties

Eclosion hormone:Mr 6813; soluble in water, physiological saline, 50%–70% methanol or ethanol.

Regulation of synthesis and release

The expression of the eh gene is probably constitutive. EH release is induced by ecdysis-triggering hormone (ETH)action on its receptor (ETHR-A) in the VM cells.EH release during preecdysis of moths and flies is indicated by a loss of immunoreactivityin VM axons and the appearance of cGMP in Inka cells and the neuronal network 27/704.Unlike the VM neurons, the recently identified Dl and Dm neurons, and somatic cells do not express either subtype of ETH receptor (ETHR-A or ETHR-B) indicating that EH release from these cells is governed by some other mechanisms.

Biological functions

There are central and peripheral roles of EH in moths. Centrally released EH activates a network of neurons (27/704) through the elevation of cGMP that is specific for the regulation of ecdysis and postecdysis processes. Peripherally released EH elicits cGMP production in endocrine Inka cells and causes massive ETH secretion to activate additional neurons controlling ecdysis.EH probably controls tracheal inflation and may act on Verson’s glands during ecdysis.Together with VM cells, EH-expressing D1 and Dm neurons govern adult ecdysis behavior in Drosophila. Persistance of D1 cells into adulthood suggests their different, albeit unknown, function. Presumptive release sites of D1 cells in medula suggest that they may modulate visual processing and possibly also“gate” adult eclosion after light exposure in flies. Function of somatically expressed EH remains to be examined but it may relate to the air-filling of the new tracheae.