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University of Colorado at Denver
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Metropolitan State University of Denver
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A comprehensive analysis of endocrine disruption in hornyhead turbot (Pleuronichthys verticalis) at five coastal sites in Southern California
1.\tBaker ME Ribecco C Vidal-Dorsch D Sprague LJ Angert M Lekmine N Ludka C Martella A Ricciardelli A
Current environmental monitoring programs focus primarily on legacy contaminants identified in the past as priority pollutants. Many new chemicals including so-called contaminants of emerging concern (CECs) are being widely dispersed into the environment and the development of sensitive tools that can screen endocrine responses and monitor the harmful effects of pollutants has become a priority. We developed a focused quantitative polymerase chain reaction (q-PCR) panel containing key endocrine gene targets for investigation of the effects of contaminants on transcriptional patterns in the demersal marine flatfish
hornyhead turbot (Pleuronichthys verticalis). An additional objective was to develop this tool so that it had broad applicability for monitoring endocrine disruption in other sentinel species
including California flatfish. This endocrine Q-PCR panel was validated by studying transcriptional perturbations in two important sentinel species
hornyhead turbot and\nEnglish sole (Parophrys vetulus)
both sampled from sewage outfall and reference coastal waters in Southern California. In addition
the cross species utility of the endocrine Q-PCR panel was examined by its application to the study of gene expression changes in laboratory male zebrafish (Danio rerio) following exposure to 17-b estradiol and 4-nonylphenol.
A comprehensive analysis of endocrine disruption in hornyhead turbot (Pleuronichthys verticalis) at five coastal sites in Southern California
3.\tMatsui H Stenbit A Lekmine N Šášik R Valafar F Conrad D and Hardiman G.
Application of multi-species endocrine Q-PCR Panel to monitor the effects of pollution in southern California flatfish
2.\tMichael E. Baker L. James Sprague Cataldo Ribecco Barbara Ruggeri Narimene Lekmine Colleen Ludka Iva
Abstract\n\nSentinel fish hornyhead turbot (Pleuronichthys verticalis) captured near wastewater outfalls are used for monitoring exposure to industrial and agricultural chemicals of ~ 20 million people living in coastal Southern California. Although analyses of hormones in blood and organ morphology and histology are useful for assessing contaminant exposure
there is a need for quantitative and sensitive molecular measurements
since contaminants of emerging concern are known to produce subtle effects. We developed a second generation multi-species microarray with expanded content and sensitivity to investigate endocrine disruption in turbot captured near wastewater outfalls in San Diego
Orange County and Los Angeles California. Analysis of expression of genes involved in hormone [e.g.
estrogen
androgen
thyroid] responses and xenobiotic metabolism in turbot livers was correlated with a series of phenotypic end points. Molecular analyses of turbot livers uncovered altered expression of vitellogenin and zona pellucida protein
indicating exposure to one or more estrogenic chemicals
as well as
alterations in cytochrome P450 (CYP) 1A
CYP3A and glutathione S-transferase-α indicating induction of the detoxification response. Molecular responses indicative of exposure to endocrine disruptors were observed in field-caught hornyhead turbot captured in Southern California demonstrating the utility of molecular methods for monitoring environmental chemicals in wastewater outfalls. Moreover
this approach can be adapted to monitor other sites for contaminants of emerging concern in other fish species for which there are few available gene sequences.
Application of multi-species endocrine Q-PCR Panel to monitor the effects of pollution in southern California flatfish
Narimene
Lekmine
San Diego Community College District
Community College of Denver
General Atomics Aeronautical Systems
New School of Architechture and Design
Metropolitan State College of Denver
University of California
San Diego/Clinical and Translational Research Institute
University of California
San Diego
Clinical and Translational Research Institute
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UCSD Medical Center/Biogem
San Diego
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San Diego Community College District
Community College of Denver
General Atomics Electromagnetic Systems
Greater San Diego Area
Senior Systems Administrator-SharePoint Developer
La Jolla
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University of California
San Diego/Clinical and Translational Research Institute
San Diego
University of California
San Diego
Clinical and Translational Research Institute
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Metropolitan State College of Denver
UCSD Medical Center/Biogem
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Programmer Analyst
San Diego
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Programmer Analyst
General Atomics Aeronautical Systems
Poway
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General Atomics Aeronautical Systems
San Diego
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New School of Architechture and Design
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