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Also, these partially depolarized cells have
Na+ channels, which in milli-seconds can slip into “resting inactivation” in
response to sub-threshold depolarizations without eliciting an action
potential and do this even faster in the presence of the fish oil fatty
acids. The results of these effects of the n-3 PUFAs are that these
partially depolarized myocytes are quickly made inexcitable and their
potential arrhythmic mischief is aborted. Myocytes with normal membrane
potentials in the nonischemic myocardium will not be so drastically affected
by the PUFAs and will continue to function normally. This latter point I
would like to clarify with the experiment shown in Figure
7. |