In general, agents and interventions that increase K+ conductance (Gk) shorten action potential duration (APD) and tend to have negative inotropic effects, whereas agents that decrease K+ current lengthen APD and may have positive inotropic effects [ 27].
In the days since the general election, David Cameron has set his sights firmly on Europe and shortened the potential timeframe of his planned referendum on the UK's membership of the European Union.
We found that both ICA-105574 and NS1643 concentration-dependently shortened action potential duration (APD) in ventricular myocytes, and QT/QTc intervals in isolated guinea-pig hearts.
It shortened action potential duration (APD) in isolated rat ventricular myocytes, and increased the threshold current for triggering action potential, but had no effect on the inward rectifier K+ current IK1.
When the designed capacity of positive electrode is higher than 50 mAh g−1, the instability of negative electrode directly causes the reduced utilization and shortened working potential range of the positive electrode, which is responsible for the capacity attenuation and cycle performance deterioration of LIC.
Biological sequelae such as chronic inflammation, sleep disturbance, or telomere shortening are potential mediators of the negative effects of childhood trauma in bipolar disorders, in particular with regard to physical health.
In fact, terfenadine, which also shortened action potential duration in the SCREENIT test system (10 µM [ 23]), has recently been suggested to cause arrhythmias not by a TdP mechanism, but by its strong INa-blocking activity [ 46].
Failure to restart telomeric replication forks, due to Ctc1 loss, has been shown to lead to an increase in fragile telomeres, stochastic and accelerated telomere attrition, an increase in single-strand G-rich telomeric DNA, and a dramatically shortened replicative potential (Gu et al., 2012).
Persistent atrial arrhythmias are associated with ectopic beats [ 6], shortened action potentials [ 1, 7], and high rates of tissue excitation [ 8].
"Every dollar that slips through these loopholes is a dollar that cannot be invested in the Australian people and their potential," Shorten will say.
