Protein Information

Name caspase (protein family or complex)
Synonyms caspase; caspases

Compound Information

Name 4-aminopyridine
CAS 4-pyridinamine

Reference List

PubMed Abstract RScore(About this table)
11586111 Dumont RJ, Verma S, Okonkwo DO, Hurlbert RJ, Boulos PT, Ellegala DB, Dumont AS: Acute spinal cord injury, part II: contemporary pharmacotherapy. Clin Neuropharmacol. 2001 Sep-Oct;24(5):265-79.

Myriad treatment modalities, including corticosteroids, 21-aminosteroids, opioid receptor antagonists, gangliosides, thyrotropin-releasing hormone (TRH) and TRH analogs, antioxidants and free radical scavengers, calcium channel blockers, magnesium replacement therapy, sodium channel blockers, N -methyl-D-aspartate receptor antagonists, alpha-amino-3-hydroxy-5-methylisoxazole-4-propionic acid-kainate receptor antagonists, modulators of arachadonic acid metabolism, neurotrophic growth factors, serotonin antagonists, antibodies against inhibitors of axonal regeneration, potassium channel blockers (4-aminopyridine), paclitaxel, clenbuterol, progesterone, gabexate mesylate, activated protein C, caspase inhibitors, tacrolimus, antibodies against adhesion molecules, and other immunomodulatory therapy have been studied to date.
31(0,1,1,1) Details
16020659 Grishin A, Ford H, Wang J, Li H, Salvador-Recatala V, Levitan ES, Zaks-Makhina E: Attenuation of apoptosis in enterocytes by blockade of potassium channels. Am J Physiol Gastrointest Liver Physiol. 2005 Nov;289(5):G815-21. Epub 2005 Jul 14.

Blockade of K+ efflux with tetraethylammonium, 4-aminopyridine, stromatoxin, chromanol 293B, and the recently described K+ channel inhibitor 48F10 prevents DNA fragmentation, caspase activation, release of cytochrome c from mitochondria, and loss of mitochondrial membrane potential.
81(1,1,1,1) Details
16019148 Han P, Lucero MT: Pituitary adenylate cyclase activating polypeptide reduces A-type K+ currents and caspase activity in cultured adult mouse olfactory neurons. Neuroscience. 2005;134(3):745-56.

Our observation that 5 mM 4-aminopyridine mimicked the caspase inhibiting effects of pituitary adenylate cyclase activating polypeptide indicates that A-type current is involved in apoptosis.
35(0,1,1,5) Details
12734105 Ekhterae D, Platoshyn O, Zhang S, Remillard CV, Yuan JX: Apoptosis repressor with caspase domain inhibits cardiomyocyte apoptosis by reducing K+ currents. Am J Physiol Cell Physiol. 2003 Jun;284(6):C1405-10. Epub 2003 Jan 29.

Extracellular application of 5 mM 4-aminopyridine (4-AP), a blocker of Kv channels, reversibly reduced I (K (V)) by 50-60% in H9c2 cells.
2(0,0,0,2) Details
11557592 Krick S, Platoshyn O, McDaniel SS, Rubin LJ, Yuan JX: Augmented K (+) currents and mitochondrial membrane depolarization in pulmonary artery myocyte apoptosis. Am J Physiol Lung Cell Mol Physiol. 2001 Oct;281(4):L887-94.

The mitochondrial membrane depolarization would cause cytochrome c release, activate the cytosolic caspases, and induce apoptosis.
Blockade of K (V) channels with 4-aminopyridine diminished I (K (V)) and markedly decreased the ST-mediated apoptosis.
1(0,0,0,1) Details
12606650 Wang XQ, Xiao AY, Yang A, LaRose L, Wei L, Yu SP: Block of Na+,K+-ATPase and induction of hybrid death by 4-aminopyridine in cultured cortical neurons. J Pharmacol Exp Ther. 2003 May;305(2):502-6. Epub 2003 Jan 21.

At similar concentrations, 4-AP induced a neuronal death sensitive to attenuation by the caspase inhibitor Z-VAD-FMK (Z-Val-Ala-Asp (OMe)-fluoromethyl ketone) or Ca (2+) chelator BAPTA-AM (1,2-bis (2-aminophenoxy) ethane-N,N,N',N'-tetraacetic acid-acetoxymethyl ester).
1(0,0,0,1) Details