Gwijun Kwon

MeSH headings : Amino Acid Sequence; Animals; Cloning, Molecular; Crustacea / drug effects; Crustacea / metabolism; Daphnia / drug effects; Daphnia / physiology; Endocrine System / drug effects; Endocrine System / metabolism; Fatty Acids, Unsaturated / pharmacology; Female; Fertility; Genes, Reporter; Life Cycle Stages / drug effects; Ligands; Luciferases / metabolism; Male; Molecular Sequence Data; Population Density; Pyridines / pharmacology; Sex Determination Processes / drug effects; Sex Ratio; Signal Transduction / drug effects; Transcription Factors / chemistry

TL;DR: Results reveal likely components to a hormone/receptor signaling pathway in a crustacean that orchestrates transgenerational modifications to important population metrics (sex ratios, fecundity of females) and how these signaling processes can facilitate population sustainability under normal conditions or threaten sustainability when perturbed by environmental chemicals. (via Semantic Scholar)

author keywords: chemical mixtures; models; synergy; invertebrate; ecdysteroid; nuclear receptor; retinoid X receptor; ecdysteroid receptor

MeSH headings : Animals; Cells, Cultured; Daphnia; Dose-Response Relationship, Drug; Drug Synergism; Ecdysterone / metabolism; Ecdysterone / toxicity; Female; Gene Expression / drug effects; Molting / drug effects; Receptors, Steroid / genetics; Receptors, Steroid / metabolism; Retinoid X Receptors / genetics; Retinoid X Receptors / metabolism; Signal Transduction; Trialkyltin Compounds / toxicity; Water Pollutants, Chemical / toxicity

TL;DR: Results demonstrate that xenobiotics, such as tributyltin, can interact with RXR to influence gene expression regulated by the heterodimeric partner to RXR. (via Semantic Scholar)

author keywords: Vitellogenin; Water flea; Biomarker; Ecdysteroids; Estrogens; Endocrine disruption

MeSH headings : Animals; Cadmium / toxicity; Daphnia / drug effects; Daphnia / genetics; Daphnia / metabolism; Ecdysteroids / toxicity; Ecdysterone / toxicity; Environmental Pollutants / toxicity; Estrogens / toxicity; Gene Expression / drug effects; Heterocyclic Compounds / toxicity; Polycyclic Compounds / toxicity; RNA, Messenger / metabolism; Vitellogenins / genetics; Vitellogenins / metabolism; Xenobiotics / toxicity

TL;DR: Results indicate that ecdysteroids are suppressors of vitellogenin gene expression and that viteLLogenin mRNA levels can be elevated or suppressed in daphnids by xenobiotics that elicit antiecdysteroidal or ecdystersoidal activity, respectively. (via Semantic Scholar)