PMID: 9533397Apr 9, 1998Paper

Delayed rectifier potassium currents induced in activated rat microglia set the resting membrane potential

Neuroscience Letters
S ChungH W Bang

Abstract

The delayed rectifying outward K+ (IK) current was measured in lipopolysaccharide (LPS)-activated cultured rat microglial cells by using whole-cell patch clamp method. The current showed 'window current' where channels were available for activation but never fully inactivated. At near resting membrane potential some part of the current was able to be activated by depolarization. Among the several K+ channel blockers tested, only 4-aminopyridine (4-AP) was able to block most of the current and depolarize the membrane potential reversibly. These results suggest that 4-AP sensitive IK current plays a direct role of setting the resting membrane potential in LPS-activated microglia.

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Citations

Feb 1, 2006·Clinical and Experimental Pharmacology & Physiology·Hyon-Ah YiJae Hoon Bae
Aug 26, 2011·Cellular Physiology and Biochemistry : International Journal of Experimental Cellular Physiology, Biochemistry, and Pharmacology·Wei WangJin Zhou
Apr 30, 2011·Physiological Reviews·Helmut KettenmannAlexei Verkhratsky

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