Results 91 to 100 of about 23,839 (265)

Role of Broad-Complex (Br) and Krüppel homolog 1 (Kr-h1) in the Ovary Development of Nilaparvata lugens

open access: yesFrontiers in Physiology, 2017
Ovarian development plays an important role in the life history of insects and is crucial for control of the insect population. The metamorphosis of an insect is precisely regulated by the interaction of the juvenile hormone and ecdysone.
Jianru Jiang, Yili Xu, Xinda Lin
doaj   +1 more source

Transcriptional control of steroid biosynthesis genes in the Drosophila prothoracic gland by ventral veins lacking and knirps. [PDF]

open access: yesPLoS Genetics, 2014
Specialized endocrine cells produce and release steroid hormones that govern development, metabolism and reproduction. In order to synthesize steroids, all the genes in the biosynthetic pathway must be coordinately turned on in steroidogenic cells.
E Thomas Danielsen   +9 more
doaj   +1 more source

Origin and diversification of steroids: Co-evolution of enzymes and nuclear receptors [PDF]

open access: yes, 2010
Recent sequencing of amphioxus and sea urchin genomes has provided important data for understanding the origins of enzymes that synthesize adrenal and sex steroids and the receptors that mediate physiological response to these vertebrate steroids ...
Michael E. Baker
core   +1 more source

Methods for Improving Settlement and Metamorphosis of Shelled Marine Mollusks in Aquaculture: A Review

open access: yesAquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
Settlement and metamorphosis are key developmental hurdles in marine mollusk aquaculture. Environmental signals (such as biofilms, algae, and signals from conspecifics) and biochemical pathways (including nitric oxide, thyroid hormones, catecholamines, and GABA) regulate the transition of larvae into benthic juveniles. Combining ecological observations
Angelica R. Valdez   +2 more
wiley   +1 more source

A critical role for ecdysone response genes in regulating egg production in adult female Rhodnius prolixus.

open access: yesPLoS ONE, 2023
Ecdysteroids control ovary growth and egg production through a complex gene hierarchy. In the female Rhodnius prolixus, a blood-gorging triatomine and the vector of Chagas disease, we have identified the ecdysone response genes in the ovary using ...
Samiha Benrabaa   +2 more
doaj   +1 more source

Function and Evolution of Nuclear Receptors in Environmental-Dependent Postembryonic Development

open access: yesFrontiers in Cell and Developmental Biology, 2021
Nuclear receptors (NRs) fulfill key roles in the coordination of postembryonal developmental transitions in animal species. They control the metamorphosis and sexual maturation in virtually all animals and by that the two main environmental-dependent ...
Jan Taubenheim   +2 more
doaj   +1 more source

Reproduction in Gammarus (Crustacea, Amphipoda): basic processes [PDF]

open access: yes, 1992
Research on the basic reproduction processes of Gammarus is summarized and reviewed, reproductive strategies in males and females being left to two later papers.
Sutcliffe, David W.
core  

Mechanisms Underlying the Initiation and Termination of Collective Cell Migration: Perspectives for Understanding Development and Cancer Metastasis

open access: yesBioEssays, Volume 48, Issue 4, April 2026.
How collective cell migration starts and stops is a fundamental question but remains poorly understood. This review discusses the distinct mechanisms in in vivo models and cancer metastasis that define the regulatory pathways and collective features governing the initiation and termination of collective cell migration.
Guangxia Miao
wiley   +1 more source

Steroid Control of Longevity in Drosophila melanogaster [PDF]

open access: yes, 2003
Ecdysone, the major steroid hormone of Drosophila melanogaster, is known for its role in development and reproduction. Flies that are heterozygous for mutations of the ecdysone receptor exhibit increases in life-span and resistance to various stresses ...
Benzer, Seymour   +3 more
core   +1 more source

Bicistronic Expression of Ecdysone-Inducible Receptors in Mammalian Cells

open access: yesBioTechniques, 2001
The recent emergence of inducible expression systems for mammalian cells has greatly facilitated the in vivo analysis of gene function. The ecdysone-inducible expression system is particularly attractive because of (i) extremely low basal expression and ...
Denise L. Wyborski   +2 more
doaj   +1 more source

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