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| Main Author: | |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2018
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| Online Access: | https://www.redalyc.org/articulo.oa?id=37058510016 https://www.redalyc.org/journal/370/37058510016/ https://www.redalyc.org/journal/370/37058510016/html/ https://www.redalyc.org/journal/370/37058510016/37058510016.epub https://www.redalyc.org/journal/370/37058510016/movil https://doi.org/10.20937/RICA.2018.34.04.15 |
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Table of Contents:
- TOXICOKINETIC AND TOXICODYNAMIC SYMBIOTIC INTERACTIONS AMONG INTESTINAL Pseudomonas DEGRADING OF HYDROCARBONS WITH ITS WILD HOST FISH Chirostoma jordani María Esperanza Gallegos Rangel Ruth L. Madera-Sandoval Graciela Castro-Escarpulli Minerva Nájera-Martínez María Lilia Domínguez-López Ethel A. García-Latorre Armando Vega-López Ciencias de la Tierra GST PAHs CYP 1A1 oxidases NDO system The symbiotic relationship between native microbiota and their hosts probably is a key factor in animal survival. In this study, the relationships of Pseudomonas spp. strains with specific biomarkers of exposure to polycyclic aromatic hydrocarbons (PAHs) in wild fish Chirostoma jordani, as well as the capacity of these bacteria to biotransform PAHs were evaluated. The activity of the naphthalene dioxygenase system of the bacteria exposed to 0.1, 1.0 and 10 µg/L of PAHs was higher than the mean isoform 1A1 (CYP1A1) of the wild fish, particularly bacterial species related to Pseudomonas spp. However, the epoxide hydrolase activity of the strains was lower in all cases compared to the fish. Glutathione S-transferase (GST) activity of the bacterial strains was lower than in the liver, but higher than in viscera of C. jordani. Using redundancy analysis, two differential patterns were found: (i) CYP1A1 activity of fish was induced by naphthalene and anthracene water levels independently of sampling season and lakes monitored, and (ii) the unidentified strain of the Pseudomonas genus biotransforms the endogenous levels of benzoapyrene, benzokfluoranthene and indeno1,2,3-cdpyrene in the fish allowing the hydroxylated metabolites to conjugate with glutathione through GST activity of the fish. 2018 artículo científico 0188-4999 https://www.redalyc.org/articulo.oa?id=37058510016 https://www.redalyc.org/journal/370/37058510016/ https://www.redalyc.org/journal/370/37058510016/html/ https://www.redalyc.org/journal/370/37058510016/37058510016.epub https://www.redalyc.org/journal/370/37058510016/movil https://doi.org/10.20937/RICA.2018.34.04.15 en http://www.redalyc.org/revista.oa?id=370 Revista Internacional de Contaminación Ambiental application/pdf Universidad Nacional Autónoma de México Revista Internacional de Contaminación Ambiental (México) Num.4 Vol.34