Characterisation of Plasmatic B-Esterases in Bottlenose Dolphins (Tursiops Truncatus) and Their Potential as Biomarkers of Plastic-Related Chemical Exposures

Solé, Montserrat; Figueres, Esther; Mañanós, Evaristo L.; Rojo-Solís, Carlos; García, Daniel Rey

doi:10.2139/ssrn.4046792

Cited by 1 publication

(1 citation statement)

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“…B-esterases are a family of hydrolases in all tissues and organs and are involved in the metabolism of endogenous substances or xenobiotics (Satoh and Hosokawa 1998); their inhibition is usually used as a biomarker for organophosphate exposure (Makhaeva et al 2009). Still, it has been reported that many other pollutants could also act as inhibitors (for example, Omedes et al 2022;Sole et al 2022), including Phe (Richardi et al 2018). Previous reports also indicate that B-esterases present in two cephalopods are sensitive to chemicals of environmental concern (Omedes et al 2022).…”

Section: Resultsmentioning

confidence: 99%

Effects of Phenanthrene Exposure on the B-esterases Activities of Octopus maya (Voss and Solís Ramírez, 1996) Embryos

Aguilar

Moreno-Ortiz

Caamal‐Monsreal

et al. 2023

Bull Environ Contam Toxicol

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No ecotoxicological information exists on phenanthrene (Phe) exposure in cephalopods, animals of commercial and ecological importance. This study investigated the effect of Phe on two B-esterases, Acetylcholinesterase (AChE) and Carboxylesterases (CbE), in Octopus maya embryos. Octopus embryos were exposed to different treatments: control (seawater), solvent control (seawater and DMSO 0.01%), 10 and 100 µg/L of Phe. AChE and CbE activities were measured at different developmental stages (blastula, organogenesis, and growth). B-esterase activities increased in control and solvent control as the embryos developed, showing no statistically significant differences between them. On the other hand, the embryos exposed to Phe had significant differences from controls, and between the high and low concentrations. Our results indicate that B-esterases are sensitive biomarkers of exposure to Phe in O. maya. Still, complementary studies are needed to unravel the toxicodynamics of Phe and the implications of the found inhibitory effect in hatched organisms.

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