Voltage-gated calcium channel (T-type and L-type) (VGCC)

Voltage-gated calcium channels (VGCCs) are critical transmembrane proteins that regulate the entry of calcium ions into excitable cells in response to electrical signals (NIH, 2017) [1.3.3]. This target group includes the L-type (Long-lasting) channels, which are high-voltage activated and essential for muscle contraction and cardiac action potentials (Wikipedia, 2024) [1.4.5], and the T-type (Transient) channels, which are low-voltage activated and regulate pacemaker activity and neuronal excitability (NIH, 2022) [1.4.2]. L-type channels are the primary targets for widely used cardiovascular drugs like dihydropyridines, while T-type channels are increasingly recognized for their roles in pain signaling and renal protection (Drugs.com, 2024; NIH, 2023) [1.2.4, 1.5.2]. Drugs that target both channel types, such as benidipine and efonidipine, are used to treat hypertension and chronic kidney disease by providing balanced vasodilation and reducing aldosterone secretion (NIH, 2023) [1.5.2]. In the central nervous system, these channels contribute to neurotransmitter release and are implicated in conditions like epilepsy and chronic pain (NIH, 2012) [1.3.4]. Therapeutic modulation of these channels must be carefully managed due to potential side effects like peripheral edema, bradycardia, and significant drug-drug interactions (NIH, 1998; Johnson Francis, 2024) [1.5.1, 1.4.3]. Overall, T-type and L-type calcium channels represent a versatile therapeutic axis for managing cardiovascular, neurological, and endocrine disorders.

Other names

Voltage-dependent calcium channelVDCCCaV channelL-type calcium channelT-type calcium channelHigh-voltage activated calcium channelLow-voltage activated calcium channelCav1Cav3

Inhibition of calcium ion influx through the pore-forming alpha-1 subunits of T-type and L-type voltage-gated calcium channels, leading to reduced intracellular calcium levels, vasodilation, and decreased cardiac excitability (StatPearls, 2024; Wikipedia, 2024) [1.2.1, 1.4.5].