Results 31 to 40 of about 2,178 (156)

Extração de ecdisterona em raízes de ginseng brasileiro Extraction of ecdysterone from roots of Brazilian ginseng

Ciência Rural, 2009
Este estudo teve como objetivo otimizar a extração de ecdisterona em raízes de ginseng brasileiro. Primeiramente, para se avaliar a eficiência do solvente extrator, amostras de raízes dois acessos (BRA e JB-UFSM) de P.
Rejane Flores, Fernando Teixeira Nicoloso, Daniela Brondani, Joseila Maldaner, Verciane Cezarotto, Sandro Rogério Giacomelli   +5 more
doaj   +1 more source

The phytochemical, biological, and medicinal attributes of phytoecdysteroids: An updated review

Acta Pharmaceutica Sinica B, 2021
The phytoecdysteroids (PEs) comprise a large group of biologically-active plant steroids, which have structures similar to those of insect-molting hormones. PEs are distributed in plants as secondary metabolites that offer protection against phytophagus (
Niranjan Das, Siddhartha Kumar Mishra, Anusha Bishayee, Eunüs S. Ali, Anupam Bishayee   +4 more
doaj   +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

Phytohormones and Elicitors Enhanced the Ecdysteroid and Glycosylflavone Content and Antioxidant Activity of Silene repens

Applied Sciences, 2021
In the course of the ongoing chemical study of species of Silene genus, S. repens Patrin as a common species of the genus, was selected as the object of this study.
Nina I. Kashchenko, Daniil N. Olennikov, Nadezhda K. Chirikova   +2 more
doaj   +1 more source

Juvenile hormone‐mediated accelerated post‐flight recovery of ovarian development in Loxostege sticticalis (Lepidoptera: Crambidae)

New Plant Protection, EarlyView.
Flight in female beet webworms (Loxostege sticticalis) promotes an increase in feeding, thereby enhancing abdominal energy reserves. Following flight, the flight muscles undergo accelerated histolysis, and the energy substances undergoing histolysis are redirected to the ovaries. These two processes collectively promote ovarian development.
Yu Gao, Yunxia Cheng, Wenyi Song, Lei Zhang, Dianjie Xie, Xingfu Jiang   +5 more
wiley   +1 more source

Evaluation of pyriproxyfen, a juvenile hormone analog, on Drosophila melanogaster (Diptera: Drosophilidae): Insecticidal activity, ecdysteroid contents and cuticle formation

European Journal of Entomology, 2015
The efficacy of pyriproxyfen, a juvenile hormone analog (JHA), was evaluated using third instar larvae of Drosophila melanogaster Meigen, 1830 (Diptera: Drosophilidae).
Fethi BENSEBAA, Samira KILANI-MORAKCHI, Nadia ARIBI, Noureddine SOLTANI   +3 more
doaj   +1 more source

From flower buds to bolls: how cotton reproductive structures shape boll weevil development, reproduction and survival

Pest Management Science, EarlyView.
Female boll weevils feeding on flower buds promote reproduction regardless of their immature diet, whereas boll feeding increases lipid reserves and lifespan, revealing a nutrition‐driven trade‐off that sustains survival and reproduction in tropical boll weevil populations.
Roberta Ramos Coelho, Guilherme Gomes Rolim, Franklin Magliano da Cunha, Valéria Wanderley‐Teixeira, José Dijair Antonino, Jorge Braz Torres   +5 more
wiley   +1 more source

Análise de β-ecdisona em plantas in vivo e in vitro de Pfaffia glomerata (Spreng.) Pedersen, através da Cromatografia em Camada Delgada Analysis of β-ecdysone from in vivo and in vitro cultured plants of Pfaffia glomerata (Spreng.) Pedersen using Thin-Layer Chromatography

Revista Brasileira de Plantas Medicinais, 2009
Pfaffia glomerata (Spreng.) Pedersen, conhecida como ginseng brasileiro, é uma planta extensivamente usada na medicina popular em decorrência de possuir propriedades fitoterápicas. O objetivo deste trabalho foi verificar a presença de β-ecdisona nas
R. Flores, V. Cezarotto, D. Brondani, S.R. Giacomelli, F.T. Nicoloso   +4 more
doaj   +1 more source

Diving Deeper Into Mechanisms of Acrylamide‐Induced Toxicity: RNA Sequencing Reveals Transcriptomic Alteration and Retrotransposon Expression in Drosophila melanogaster

Environmental Toxicology, EarlyView.
ABSTRACT Given the inevitability of human and animal exposure to acrylamide, there is increasing concern regarding its potential health risks. While a number of molecular mechanisms have been proposed, the complexity of acrylamide toxicological pathways and interactions remains incompletely characterized.
Oluwabukola Mary Farodoye, Titilayomi Ayomide Otenaike, Daniela Moreira Mombach, Monica Medeiros Silva, Amos Olalekan Abolaji, Elgion Lucio Da Silva Loreto   +5 more
wiley   +1 more source

Calcitonin‐like diuretic hormone influences reproduction in adult female Rhodnius prolixus

Insect Science, EarlyView.
Highlights • CT/DH‐like immunoreactivity is present in female reproductive tissues • CT/DH receptor transcripts are expressed in the fat body and ovaries • RNAi knockdown of CT/DH receptors reduces egg number and hatching rate • Rhopr‐CT/DH increases RhoprVg1 and RhoprVgR expression in ovaries in vitro • Rhopr‐CT/DH stimulates oviduct contractions in a
Areej N. Al‐Dailami, Ian Orchard, Angela B. Lange   +2 more
wiley   +1 more source