OBJECTIVE: The aim of this study is to investigate the effect of day and night administration of desflurane anaesthesia on melatonin levels in rats. METHODS: Twenty-four 15-day-old rats were included in the study and were divided into four groups. The rats were anaesthetised between 19:00-01:00 (night group) and 07:00-13:00 (day group) with 5.7% desflurane concentration in 6 L min-1 100% oxygen. 6 L min-1 oxygen was administered to the control groups. At the end of 6 h of anaesthesia, blood samples were taken, and rats were sacrificed. Blood samples were centrifuged and melatonin levels from plasma samples were measured with radioimmunoassay. RESULTS: There was a statistically significant difference between the groups (p=0.007). Between group day control and group night control there was a statistically significant difference (p=0.042). Further, there was a significant difference between group day control and night desfluran as well (p=0.024). We could not find any difference between other groups. CONCLUSION: This study showed that 6 hours of 5.7% desflurane anaesthesia during day and night hours did not significantly change melatonin levels.
OBJECTIVE: The aim of this study is to investigate the effect of day and night administration of desflurane anaesthesia on melatonin levels in rats. METHODS: Twenty-four 15-day-old rats were included in the study and were divided into four groups. The rats were anaesthetised between 19:00-01:00 (night group) and 07:00-13:00 (day group) with 5.7% desflurane concentration in 6 L min-1 100% oxygen. 6 L min-1 oxygen was administered to the control groups. At the end of 6 h of anaesthesia, blood samples were taken, and rats were sacrificed. Blood samples were centrifuged and melatonin levels from plasma samples were measured with radioimmunoassay. RESULTS: There was a statistically significant difference between the groups (p=0.007). Between group day control and group night control there was a statistically significant difference (p=0.042). Further, there was a significant difference between group day control and night desfluran as well (p=0.024). We could not find any difference between other groups. CONCLUSION: This study showed that 6 hours of 5.7% desflurane anaesthesia during day and night hours did not significantly change melatonin levels.
Authors: C Ikonomidou; P Bittigau; C Koch; K Genz; F Hoerster; U Felderhoff-Mueser; T Tenkova; K Dikranian; J W Olney Journal: Biochem Pharmacol Date: 2001-08-15 Impact factor: 5.858
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Authors: A Reber; P R Huber; W Ummenhofer; C M Gürtler; C Zurschmiede; J Drewe; M Schneider Journal: Acta Anaesthesiol Scand Date: 1998-10 Impact factor: 2.105
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