February 1, 1991The Journal of PhysiologyOpen Access

Role of K+ channels in spontaneous electrical and mechanical activity of smooth muscle in the guinea‐pig mesotubarium.

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Population

Guinea-pig mesotubarium smooth muscle

Comparison

Agents interacting with K+ channels vs Baseline/normal conditions

Design

Preclinical

Authors

MLMarie‐Louise LydrupMalmö University

Discussion

Member takes

Implication

Guinea-pig findings highlight channel-specific roles in smooth muscle excitability; leaves open translation to human cardiovascular electrophysiology.

Structured PICO

Population

Guinea-pig mesotubarium smooth muscle

Intervention

Agents interacting with K+ channels (tetraethylammonium [TEA], 4-aminopyridine [4-AP], apamin, charybdotoxin, pinacidil)

Comparator

Baseline/normal conditions

Outcome

Spontaneous electrical and mechanical activity and efflux rate of 86Rb+surrogate

In guinea-pig mesotubarium smooth muscle, distinct K+ channels regulate different phases of electrical and mechanical activity, with TEA-sensitive channels repolarizing action potentials and 4-AP-sensitive channels repolarizing slow waves.

Cite This Study

Marie‐Louise Lydrup (1991) studied this question.

synapsesocial.com/papers/6a82c64d68df11fa7b6d05dd https://doi.org/10.1113/jphysiol.1991.sp018428

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Implication

Guinea-pig findings highlight channel-specific roles in smooth muscle excitability; leaves open translation to human cardiovascular electrophysiology.