Results 41 to 50 of about 18,562 (160)

Systemic effects of phytoecdysteroids on the cabbage aphid Brevicoryne brassicae (Sternorrhyncha: Aphididae)

European Journal of Entomology, 2005
The systemic effects of phytoecdysteroids were investigated by applying tested compounds to the roots of the rape plants. Evaluation of the effects was based on mortality, longevity, rate of development and fecundity of the cabbage aphid (Brevicoryne ...
Roman PAVELA, Juraj HARMATHA, Martin BÁRNET, Karel VOKÁČ   +3 more
doaj   +1 more source

TcALS knockdown accelerates metamorphosis via insulin signaling in Tribolium castaneum

Insect Science, EarlyView.
RNAi silencing of TcALS accelerates larva‐to‐pupa metamorphosis in Tribolium castaneum. Abstract Insect metamorphosis is an evolutionary adaptation precisely regulated by nutritional and hormonal cues. The red flour beetle Tribolium castaneum, a major stored‐product pest, serves as an excellent model for studying this process.
Min Li, Jie Chen, Zi‐Ye Wang, Fei‐Feng Wang, Lu‐Lu Dong, Jun Pan, Min‐Er Li, Lin Yu, Wen Sang   +8 more
wiley   +1 more source

Ecdysteroid 7,9(11)-dien-6-ones as potential photoaffinity labels for ecdysteroid binding proteins

Journal of Insect Science, 2002
Three ecdysteroid 7,9(11)-dien-7-ones (dacryhainansterone, 25-hydroxydacryhainansterone and kaladasterone) were prepared by dehydration of the corresponding 11alpha-hydroxy ecdysteroids (ajugasterone C, turkesterone and muristerone A, respectively).
Pauline C. Bourne, Pensri Whiting, Tarlochan S. Dhadialla, Robert E. Hormann, Jean-Pierre Girault, Juraj Harmatha, René Lafont, Laurence Dinan   +7 more
doaj  

Untargeted Metabolomic and Lipidomic Profiles of Gingival Crevicular Fluid in the Context of Periodontitis

Journal of Clinical Periodontology, EarlyView.
ABSTRACT Aim(s) This cross‐sectional clinical study aimed to explore the untargeted metabolomic and lipidomic profiles in gingival crevicular fluid (GCF) obtained from healthy individuals and patients with periodontitis. Materials and Methods GCF was collected from 17 periodontally healthy and 19 periodontitis patients.
Caroline H. Henderzahs, Chiaki Yamada, Alexandr Morozov, Thelmalane Yalartai, Vanchit John, Hawra AlQallaf, Alexandru Movila   +6 more
wiley   +1 more source

Transcriptional Regulators of Ecdysteroid Biosynthetic Enzymes and Their Roles in Insect Development

Frontiers in Physiology, 2022
Steroid hormones are responsible for coordinating many aspects of biological processes in most multicellular organisms, including insects. Ecdysteroid, the principal insect steroid hormone, is biosynthesized from dietary cholesterol or plant sterols.
Takumi Kamiyama, Ryusuke Niwa
doaj   +1 more source

Prioritising research on endocrine disruption in the marine environment: a global perspective

Biological Reviews, Volume 101, Issue 2, Page 848-868, April 2026.
ABSTRACT A healthy ocean is a crucial life support system that regulates the global climate, is a source of oxygen and supports major economic activities. A vast and understudied biodiversity from micro‐ to macro‐organisms is integral to ocean health.
Patricia I. S. Pinto, Angelica Miglioli, Carlie A. LaLone, Lisa Baumann, Alice Baynes, Mélanie Blanc‐Legendre, Ibon Cancio, Xavier Cousin, ZhiChao Dang, Rémi Dumollard, Alex T. Ford, Christopher Green, Taisen Iguchi, Philippa Kearney, Thomas Knigge, Christophe Minier, Tiphaine Monsinjon, Marta S. Monteiro, Joachim Sturve, Haruna Watanabe, Hiroshi Yamamoto, Gerald Ankley, Deborah M. Power, Ioanna Katsiadaki   +23 more
wiley   +1 more source

Insect‐Derived Bioactives for Glycemic Control and Gut Health: A Review

Food Frontiers, Volume 7, Issue 2, March 2026.
Insect‐derived bioactive compounds (e.g., peptides, polysaccharides) effectively regulate blood glucose through dual mechanisms: directly inhibiting carbohydrate‐digesting enzymes and glucose transporters, and indirectly modulating gut microbiota to enhance intestinal barrier integrity.
Chaoyi Lv, Yuanyuan Huang, Mokhtar Dabbour, Benjamin Kumah Mintah, Ronghai He, Haile Ma   +5 more
wiley   +1 more source

Synthesis and biological activities of turkesterone 11?-acyl derivatives

Journal of Insect Science, 2003
Turkesterone is a phytoecdysteroid possessing an 11alpha-hydroxyl group. It is an analogue of the insect steroid hormone 20-hydroxyecdysone. Previous ecdysteroid QSAR and molecular modelling studies predicted that the cavity of the ligand-binding domain ...
Laurence Dinan, Pauline Bourne, Pensri Whiting, Ada Tsitsekli, Ziyadilla Saatov, Tarlochan S. Dhadialla, Robert E. Hormann, René Lafont, Josep Coll   +8 more
doaj  

Molecular and Endocrine Regulation of Ovarian Maturation in the Black Tiger Prawn (Penaeus monodon) and Associated Challenges in Its Aquaculture

Reviews in Aquaculture, Volume 18, Issue 2, March 2026.
ABSTRACT Over the past four decades, substantial research has investigated the regulation of ovarian maturation and spawning in the black tiger prawn (Penaeus monodon). In this species, female reproduction is strongly suppressed by gonad‐inhibiting hormone (GIH) released from the eyestalk, making eyestalk ablation (ESA) the most widely adopted spawning‐
Gourab Chowdhury, Josephine Nocillado, Abigail Elizur, Scott F. Cummins, Tomer Ventura   +4 more
wiley   +1 more source

Bed bug preferences for host odor or aggregation odor are differentially modulated by physiological state in various odorscapes

Pest Management Science, Volume 82, Issue 2, Page 1426-1436, February 2026.
The bed bug olfactory system is highly tuned to two odor sources with dedicated odor information‐processing pathways that are modulated by the satiety–hunger state. Understanding the dynamic nature of switching odor preferences at different phases of blood digestion will contribute to the development of lures with host kairomones and aggregation ...
Ayako Wada‐Katsumata, Christopher C. Hayes, Charles A. Kwadha, Alexander Ko, Coby Schal   +4 more
wiley   +1 more source