Sinead O'Donovan, Mark Kennedy, Blaithin Guinan, Shane O'Mara, Declan M. McLoughlin, A comparison of brief pulse and ultrabrief pulse electroconvulsive stimulation on rodent brain and behaviour, Progress in Neuropsychopharmacology & Biological Psychiatry, Volume 37, Issue 1, 27 April 2012, Pages 147-152
Progress in Neuropsychopharmacology & Biological Psychiatry;37, 1
Brief pulse electroconvulsive therapy (BP ECT; pulse width 0.5-1.5 msec) is a very effective treatment for severe depression but is associated with cognitive side-effects. It has been proposed that ultrabrief pulse (UBP; pulse width 0.25-0.30 msec) ECT may be as effective as BP ECT but have less cognitive effects because it is a more physiological form of neuronal stimulation. To investigate this further, we treated normal rats with a 10 session course of either BP (0.5 msec), UBP (0.3 msec), or sham electroconvulsive stimulation (ECS) and measured antidepressant-related changes in dentate gyrus cell proliferation and hippocampal BDNF protein levels as well as hippocampal-dependant spatial reference memory using the water plus maze and immobility time on the forced swim test. Both BP and UBP ECS induced very similar types of motor seizures. However, BP ECS but not UBP ECS treatment led to a significant, near 3-fold, increase in cell proliferation (p = 0.026) and BDNF levels (p = 0.01). In the forced swim test, only BP ECS treated animals had a significantly lower immobility time (p = 0.046). There was a trend for similarly reduced hippocampal-dependent memory function in both BP and UBP groups but overall there was not a significant difference between treatment and control animals when tested 10 days after completing allocated treatment. These findings show that, even though both forms of ECS elicited similar motor seizures, UBP ECS was less efficient than BP ECS in inducing antidepressant-related molecular, cellular and behavioural changes.
Please note: There is a known bug in some browsers that causes an
error when a user tries to view large pdf file within the browser window.
If you receive the message "The file is damaged and could not be
repaired", please try one of the solutions linked below based on the
browser you are using.
Items in TARA are protected by copyright, with all rights reserved, unless otherwise indicated.