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2021 - Regulatory effects of non-steroidal anti-inflammatory drugs on cardiac ion channels Nav1.5 and Kv11.1

icon pap   Port-a-Patch Publication in Chemico-Biological Interactions (2021)

Authors:
Xu Y., Li W., Han Y., Liu H., Zhang S., Yan J., Sun J., Liu Y., Zhang J., Zhao M.

Journal:
Chemico-Biological Interactions (2021) doi:10.1016/j.cbi.2021.109425


Abstract:

Non-steroidal Anti-inflammatory Drugs (NSAIDs) are widely used because of their excellent anti-inflammatory and analgesic effects. However, NSAIDs could cause certain cardiac side effects, such as myocardial infarction, heart failure, atrial fibrillation, arrhythmia and sudden cardiac death. Therefore, meloxicam, nimesulide, piroxicam, and diclofenac were selected and the whole cell patch clamp technique was used to investigate the electrophysiological regulatory effects of them on the sodium channel hNav1.5 and potassium channel hKv11.1, which were closely associated to the biotoxicity of cardiac, and to explore the potential cardiac risk mechanism. The results showed that the four NSAIDs could inhibit the peak currents of hNav1.5 and hKv11.1. Furthermore, the four NSAIDs could affect both the activation and inactivation processes of hNav1.5 with I–V curves left-shifted to hyperpolarized direction in activation phase. These data indicate that the inhibition effects of Nav1.5 and Kv11.1 by meloxicam, nimesulide, piroxicam, and diclofenac might contribute to their potential cardiac risk. These findings provide a basis for the discovery of other potential cardiac risk targets for NSAIDs.


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