Key result
Ca(v)1.2 channel gene inactivation in murine arterial smooth muscle cells reduced Ca(2+) spark frequency by approximately 50% and amplitude by approximately 80%.
Population
Tibial and cerebral artery vascular smooth muscle cells from wild-type and VSMC-specific Ca1.2 channel gene…
Comparison
VSMC-specific Ca(v)1.2 channel gene disruption vs Wild-type VSMCs
Design
Preclinical
Authors
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No immediate clinical implications from murine data; extends understanding of Ca(v)1.2 in arterial Ca(2+) dynamics but leaves open human relevance.
In murine arterial smooth muscle cells, Ca(v)1.2 channels regulate Ca(2+) sparks indirectly by contributing to global cytosolic Ca(2+) levels rather than through tight local coupling with ryanodine receptors.
Essin et al. (2007) studied Basic science (murine arterial smooth muscle cells). Ca(v)1.2 channel gene disruption vs. Wild-type was evaluated on Ca(2+) spark frequency and amplitude. Ca(v)1.2 channel gene inactivation in murine arterial smooth muscle cells reduced Ca(2+) spark frequency by approximately 50% and amplitude by approximately 80%.
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