T-type calcium channel

Mibefradil dihydrochloride (Ro 40-5967 (dihydrochloride)) is an blocker of calcium channel with moderate selectivity for T-type Ca2+ channels (T-type and L-type currents with IC50s of 2.7 μM and 18.6 μM, respectively).

T-Type calcium channel inhibitor 2 (compound 6g) is a potent inhibitor of the T-type calcium channel, specifically acting on Cav3.1 (α1G) with an IC50 of 31.0 μM, Cav3.2 (α1H) with an IC50 of 83.1 μM, and Cav3.3 (α1I) (α1H). T-Type calcium channel inhibitor 2 exhibited cytotoxicity against A549 and HCT-116 cells with IC50s of 5.0 μM and 6.4 μM, respectively.

2-Nitrobenzoic acid (o-Nitrobenzoic acid) is a antiproliferation agent. 2-Nitrobenzoic acid shows IC50 of 8.3 μM to jurkat cell line expressing T type calcium channel alpha 1H or its splice variant delta 25.

Zonisamide (AD 810), a sulfonamide anticonvulsant, is approved for use as an adjunctive treatment in adults with partial-onset seizures. It may inhibit a carbonic anhydrase although this is not one of the main mechanisms of action. Zonisamide may act by blocking repetitive firing of voltage-gated sodium channels results in a reduction of T-type calcium channel currents, or by binding allosterically to GABA receptors. This latter action may lower the uptake of the inhibitory neurotransmitter GABA while increasing the uptake of the excitatory neurotransmitter glutamate.

Ethosuximide (Zarontin) is an anticonvulsant, blocks the low voltage-activated T-type calcium channel used in the treatment of absence seizures unaccompanied by other types of seizures.

1-Octanol, a saturated fatty alcohol, functions as an inhibitor of T-type calcium channels (T-channels), showing an inhibitory concentration (IC50) of 4 μM for native T-currents[1]. Additionally, 1-Octanol is recognized for its potential as a biofuel, possessing diesel-like properties[2].

Lomerizine dihydrochloride (KB-2796) is an antagonist of L- and T-type voltage-gated calcium channels used to treat migraine.

Mibefradil is a calcium channel blocker with moderate selectivity for T-type Ca2+ channels (IC50s: 2.7 μM and 18.6 μM for T-type and L-type currents).

Efonidipine (NZ-105)(NZ-105) is a dihydropyridine calcium channel blocker, blocking both T-type and L-type calcium channels.

Trimethadione (3,5,5-Trimethyloxazolidine-2,4-dione) is a dione-type anticonvulsant with antiepileptic activity.

NNC 55-0396 is a highly selective T-type calcium channel blocker with an IC50 of 6.8 μM, used in studies to prevent human ovarian cancer cell proliferation.

TTA-Q6, a selective T-type Ca2+ channel antagonist, exhibits potential antitumor and immunomodulatory activities for treating neurological disorders by inhibiting the uptake of extracellular calcium ions by tumor cells, thereby inducing intracellular calcium deficiency and endoplasmic reticulum (ER) stress.

ACT-709478 is a potent, selective T-type calcium channel blocker that is orally active and capable of penetrating the brain. It is currently utilized in research focusing on generalized epilepsies[1].

MK-8998 is a T-type calcium channel antagonist that may be utilized in the treatment of schizophrenia. However, it has not demonstrated efficacy in treating hospitalized patients with acute psychosis, according to the PANSS scores measured at week four.

Z944 is a T-type calcium channel antagonist with potential applications in pain management. In both epileptic and non-epileptic rats, Z944 disrupts prepulse inhibition. Additionally, it corrects cross-modal sensory and visual recognition memory deficits in Strasbourg genetic absence epilepsy rats. In a neuropathic pain rat model, Z944 restores cortical synchrony and thalamocortical connectivity. In the amygdala kindling model, it delays seizure progression.

Cav 3.1 blocker 1 (compound 12) is a T-type calcium channel inhibitor with an IC50 value of 160 nM for Cav3.1. It exhibits weaker inhibition on Cav 3.2 with an IC50 of 5000 nM and shows no inhibitory effect on Cav 3.3 and Cav 1.2 (IC50 > 10000 nM).

Z944 is a T-type calcium channel blocker. Z944 delays the progression of seizures in the amygdala kindling model. Z944 disrupts prepulse inhibition in both epileptic and non-epileptic rats.

ABT-639 is a potent and selective T-type calcium channel blocker.

Zonisamide-13C2,15N is intended for use as an internal standard for the quantification of zonisamide by GC- or LC-MS. Zonisamide is an antiepileptic agent.1 It selectively inhibits the repeated firing of sodium channels (IC50 = 2 μg/ml) in mouse embryo spinal cord neurons and inhibits spontaneous channel firing when used at concentrations greater than 10 μg/ml.2 In rat cerebral cortex neurons, zonisamide (1-1,000 μM) inhibits T-type calcium channels with a maximum reduction of 60% of the calcium current.3 Zonisamide inhibits H. pylori recombinant carbonic anhydrase (CA) and the human CA isoforms I, II, and V with Ki values of 218, 56, 35, and 21 nM, respectively.4,5 In mice, it has anticonvulsant activity against maximal electroshock seizure (MES) and pentylenetetrazole-induced maximal, but not minimal, seizures (ED50s = 19.6, 9.3, and >500 mg/kg, respectively). Zonisamide (40 mg/kg, p.o.) prevents MPTP-induced decreases in the levels of dopamine , but not homovanillic acid or dihydroxyphenyl acetic acid , and increases MPTP-induced decreases in the dopamine turnover rate in mouse striatum in a model of Parkinson's disease.6 Formulations containing zonisamide have been used in the treatment of partial seizures in adults with epilepsy. |1. Masuda, Y., Ishizaki, M., and Shimizu, M. Zonisamide: Pharmacology and clinical efficacy in epilepsy. CNS Drug Rev. 4(4), 341-360 (1998).|2. Rock, D.M., Macdonald, R.L., and Taylor, C.P. Blockade of sustained repetitive action potentials in cultured spinal cord neurons by zonisamide (AD 810, CI 912), a novel anticonvulsant. Epilepsy Res. 3(2), 138-143 (1989).|3. Suzuki, S., Kawakami, K., Nishimura, S., et al. Zonisamide blocks T-type calcium channel in cultured neurons of rat cerebral cortex. Epilepsy Res. 12(1), 21-27 (1992).|4. Nishimori, I., Vullo, D., Minakuchi, T., et al. Carbonic anhydrase inhibitors: Cloning and sulfonamide inhibition studies of a carboxyterminal truncated α-carbonic anhydrase from Helicobacter pylori. Bioorg. Med. Chem. Lett. 16(8), 2182-2188 (2006).|5. De Simone, G., Di Fiore, A., Menchise, V., et al. Carbonic anhydrase inhibitors. Zonisamide is an effective inhibitor of the cytosolic isozyme II and mitochondrial isozyme V: Solution and X-ray crystallographic studies. Bioorg. Med. Chem. Lett. 15(9), 2315-2320 (2005).|6. Yabe, H., Choudhury, M.E., Kubo, M., et al. Zonisamide increases dopamine turnover in the striatum of mice and common marmosets treated with MPTP. J. Pharmacol. Sci. 110(1), 64-68 (2009).

Suvecaltamide (MK-8998) as potent inhibitors of T-type calcium channels.

IAB15 is a potent inhibitor of T-type calcium channel that can be used in the research of epilepsy [1].

IAA65 is a potent inhibitor of T-type calcium channels, exhibiting an IC50 value of 18.9 μM, and holds potential for use in epilepsy research [1].

TTA-P2 (T-Type calcium channel inhibitor) is a potent inhibitor of T-type calcium channels. It effectively penetrates the CNS and blocks natural T-type currents in deep cerebellar nucleus neurons, completely eliminating window currents in wild-type and mutant Cav3.1 channels. [research]

MONIRO-1 is a T- and N-type calcium channel blocker that acts on hCav2.2 (IC50: 34 μM), hCav3.1 (IC50: 3.3 μM), hCav3.2 (IC50: 1.7 μM) and hCav3.3 (IC50: 7.2 μM).