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Dioxin Disrupts Thyroid Hormone and Glucocorticoid Induction of klf9, a Master Regulator of Frog Metamorphosis. , Han DT, Zhao W , Powell WH ., Toxicol Sci. April 26, 2022; 187 (1): 150-161.
An aryl hydrocarbon receptor from the caecilian Gymnopis multiplicata suggests low dioxin affinity in the ancestor of all three amphibian orders. , Kazzaz SA, Giani Tagliabue S, Franks DG, Denison MS, Hahn ME, Bonati L, Powell WH ., Gen Comp Endocrinol. December 1, 2020; 299 113592.
Dioxin Exposure Alters Molecular and Morphological Responses to Thyroid Hormone in Xenopus laevis Cultured Cells and Prometamorphic Tadpoles. , Taft JD, Colonnetta MM, Schafer RE, Plick N, Powell WH ., Toxicol Sci. January 1, 2018; 161 (1): 196-206.
Similarity in gene-regulatory networks suggests that cancer cells share characteristics of embryonic neural cells. , Zhang Z , Lei A, Xu L, Chen L, Chen Y , Chen Y , Zhang X, Gao Y, Yang X, Zhang M, Cao Y , Cao Y ., J Biol Chem. August 4, 2017; 292 (31): 12842-12859.
Subfunctionalization of Paralogous Aryl Hydrocarbon Receptors from the Frog Xenopus Laevis: Distinct Target Genes and Differential Responses to Specific Agonists in a Single Cell Type. , Freeburg SH, Engelbrecht E, Powell WH ., Toxicol Sci. February 1, 2017; 155 (2): 337-347.
The aryl hydrocarbon receptor controls cyclin O to promote epithelial multiciliogenesis. , Villa M, Crotta S, Dingwell KS, Hirst EM, Gialitakis M, Ahlfors H, Smith JC , Stockinger B, Wack A., Nat Commun. August 24, 2016; 7 12652.
An Aryl Hydrocarbon Receptor from the Salamander Ambystoma mexicanum Exhibits Low Sensitivity to 2,3,7,8-Tetrachlorodibenzo-p-dioxin. , Shoots J, Fraccalvieri D, Franks DG, Denison MS, Hahn ME, Bonati L, Powell WH ., Environ Sci Technol. June 2, 2015; 49 (11): 6993-7001.
Specific ligand binding domain residues confer low dioxin responsiveness to AHR1β of Xenopus laevis. , Odio C, Holzman SA, Denison MS, Fraccalvieri D, Bonati L, Franks DG, Hahn ME, Powell WH ., Biochemistry. March 12, 2013; 52 (10): 1746-54.
Agr genes, missing in amniotes, are involved in the body appendages regeneration in frog tadpoles. , Ivanova AS, Tereshina MB, Ermakova GV, Belousov VV, Zaraisky AG ., Sci Rep. January 1, 2013; 3 1279.
Induction of cytochrome P450 family 1 mRNAs and activities in a cell line from the frog Xenopus laevis. , Iwamoto DV, Kurylo CM, Schorling KM, Powell WH ., Aquat Toxicol. June 15, 2012; 114-115 165-72.
New CYP1 genes in the frog Xenopus (Silurana) tropicalis: induction patterns and effects of AHR agonists during development. , Jönsson ME, Berg C, Goldstone JV, Stegeman JJ., Toxicol Appl Pharmacol. January 15, 2011; 250 (2): 170-83.
Responsiveness of a Xenopus laevis cell line to the aryl hydrocarbon receptor ligands 6-formylindolo[3,2-b]carbazole (FICZ) and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). , Laub LB, Jones BD, Powell WH ., Chem Biol Interact. January 5, 2010; 183 (1): 202-11.
Effects of TCDD on spermatogenesis related factor-2 ( SRF-2): gene expression in Xenopus. , Rossi F, Bernardini G, Bonfanti P, Colombo A, Prati M, Gornati R., Toxicol Lett. December 15, 2009; 191 (2-3): 189-94.
An aryl hydrocarbon receptor repressor from Xenopus laevis: function, expression, and role in dioxin responsiveness during frog development. , Zimmermann AL, King EA, Dengler E, Scogin SR, Powell WH ., Toxicol Sci. July 1, 2008; 104 (1): 124-34.
Cytochrome P450 1 genes in early deuterostomes (tunicates and sea urchins) and vertebrates (chicken and frog): origin and diversification of the CYP1 gene family. , Goldstone JV, Goldstone HM, Morrison AM, Tarrant A, Kern SE, Woodin BR, Stegeman JJ., Mol Biol Evol. December 1, 2007; 24 (12): 2619-31.
Developmental differences in elimination of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) during Xenopus laevis development. , Philips BH, Susman TC, Powell WH ., Mar Environ Res. July 1, 2006; 62 Suppl S34-7.
The implications of low-affinity AhR for TCDD insensitivity in frogs. , Elskus AA., Toxicol Sci. November 1, 2005; 88 (1): 1-3.
Aryl hydrocarbon receptors in the frog Xenopus laevis: two AhR1 paralogs exhibit low affinity for 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). , Lavine JA, Rowatt AJ, Klimova T, Whitington AJ, Dengler E, Beck C, Powell WH ., Toxicol Sci. November 1, 2005; 88 (1): 60-72.
Evolutionary selection across the nuclear hormone receptor superfamily with a focus on the NR1I subfamily (vitamin D, pregnane X, and constitutive androstane receptors). , Krasowski MD, Yasuda K, Hagey LR, Schuetz EG., Nucl Recept. September 30, 2005; 3 2.
ARNT gene multiplicity in amphibians: characterization of ARNT2 from the frog Xenopus laevis. , Rowatt AJ, DePowell JJ, Powell WH ., J Exp Zool B Mol Dev Evol. December 15, 2003; 300 (1): 48-57.
Molecular cloning and expression analysis of the aryl hydrocarbon receptor of Xenopus laevis. , Ohi H, Fujita Y, Miyao M, Saguchi K, Murayama N, Higuchi S., Biochem Biophys Res Commun. August 1, 2003; 307 (3): 595-9.
Differential modulation of cytochrome P-450 1A and P-glycoprotein expression by aryl hydrocarbon receptor agonists and thyroid hormone in Xenopus laevis liver and intestine. , Colombo A, Bonfanti P, Orsi F, Camatini M., Aquat Toxicol. April 10, 2003; 63 (2): 173-86.