Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Effects of crude oil vapors on the cardiovascular flow of embryonic Gulf killifish
Ist Teil von
The Science of the total environment, 2021-01, Vol.751, p.141627, Article 141627
Ort / Verlag
Netherlands: Elsevier B.V
Erscheinungsjahr
2021
Link zum Volltext
Quelle
MEDLINE
Beschreibungen/Notizen
Direct contact with toxicants in crude oil during embryogenesis causes cardiovascular defects, but the effects of exposure to airborne volatile organic compounds released from spilled oil are not well understood. The effects of crude oil-derived airborne toxicants on peripheral blood flow were examined in Gulf killifish (Fundulus grandis) since this model completes embryogenesis in the air. Particle image velocimetry was used to measure in vivo blood flow in intersegmental arteries of control and oil-exposed embryos. Significant effects in oil-exposed embryos included increased pulse rate, reduced mean blood flow speed and volumetric flow rate, and decreased pulsatility, demonstrating that normal-appearing oil-exposed embryos retain underlying cardiovascular defects. Further, hematocrit moderately increased in oil-exposed embryos. This study highlights the potential for fine-scale physiological measurement techniques to better understand the sub-lethal effects of oil exposure and demonstrates the efficacy of Gulf killifish as a unique teleost model for aerial toxicant exposure studies.
[Display omitted]
•Negative health effects of airborne crude oil vapor exposure are not well studied.•Killifish eggs which uniquely incubate in air were exposed to crude oil vapors.•High speed particle image velocimetry was used to measure blood flow in hatchlings.•Oil-exposed fish had reduced mean blood flow speed, flow rate, and flow pulsatility.•Normal-looking oil-exposed fish nonetheless had reduced cardiovascular performance.