Πέμπτη 29 Μαρτίου 2018

Anesthetics Influence Mortality in a Drosophila Model of Blunt Trauma With Traumatic Brain Injury

Background: Exposure to anesthetics is common in the majority of early survivors of life-threatening injuries. Whether and to what degree general anesthetics influence outcomes from major trauma is unknown. Potential confounding effects of general anesthetics on outcome measures are usually disregarded. We hypothesized that exposure to isoflurane or sevoflurane modulates the outcome from blunt trauma with traumatic brain injury (bTBI). Methods: We tested the hypothesis in a novel model of bTBI implemented in Drosophila melanogaster. Fruit flies of the standard laboratory strain w1118 were cultured under standard conditions. We titrated the severity of bTBI to a mortality index at 24 hours (MI24) of approximately 20% under control conditions. We administered standard doses of isoflurane and sevoflurane before, before and during, or after bTBI and measured the resulting MI24. We report the MI24 as mean ± standard deviation. Results: Isoflurane or sevoflurane administered for 2 hours before bTBI reduced the MI24 from 22.3 ± 2.6 to 10.4 ± 1.8 (P

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