J Seharaseyon

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BACKGROUND Pharmacological evidence has implicated ATP-sensitive K(+) (K(ATP)) channels as the effectors of cardioprotection, but the relative roles of mitochondrial (mitoK(ATP)) and sarcolemmal (surfaceK(ATP)) channels remain controversial. METHODS AND RESULTS We examined the effects of the K(ATP) channel blocker HMR1098 and the K(ATP) channel opener(More)
Many mammalian cells have two distinct types of ATP-sensitive potassium (K(ATP)) channels: the classic ones in the surface membrane (sK(ATP)) and others in the mitochondrial inner membrane (mitoK(ATP)). Cardiac mitoK(ATP) channels play a pivotal role in ischemic preconditioning, and thus represent interesting drug targets. Unfortunately, the molecular(More)
The effect of ciliary neurotrophic factor (CNTF) on peripheral nerve regeneration was studied in 6-week-old rats following sciatic nerve transection and juxtaposition of proximal and distal stumps. Rats received intraperitoneal recombinant human CNTF, 1 mg/kg every other day for 12 days. In all CNTF-treated animals, the distribution of the anterograde(More)
Pharmacological evidence has implicated ATP-dependent potassium (KATP) channels in the mechanism of ischemic preconditioning; however, the effects of sarcolemmal KATP channels on excitability cannot account for the protection. KATP channels also exist in mitochondrial inner membrane. To test whether such channels play a role in cardioprotection, we(More)
A variety of direct and indirect techniques have revealed the existence of ATP-sensitive potassium (KATP) channels in the inner membranes of mitochondria. The molecular identity of these mitochondrial KATP (mitoKATP) channels remains unclear. We used a pharmacological approach to distinguish mitoKATP channels from classical, molecularly defined cardiac(More)
K(ATP) channels consist of pore-forming potassium inward rectifier (Kir6.x) subunits and sulfonylurea receptors (SURs). Although Kir6.1 or Kir6.2 coassemble with different SUR isoforms to form heteromultimeric functional K(ATP) channels, it is not known whether Kir6.1 and Kir6.2 coassemble with each other. To define the molecular identity of K(ATP)(More)
Heart cells contain ATP-sensitive potassium (KATP) channels in both the sarcolemma and the inner mitochondrial membrane. The sarcolemmal channels are believed to be heteromultimeric complexes of sulfonylurea receptors (SUR) and potassium inward rectifier (Kir) gene products, but the molecular identity of mitochondrial KATP (mitoKATP) channels remains(More)
This study demonstrates the direct delivery of plasmid gene constructs into spinal motor neurons utilizing retrograde axoplasmic transport. The plasmid vectors contained the Lac Z gene under the control of both the Rous sarcoma virus (RSV) and Simian virus (SV)40 promoters. beta-Galactosidase expression was observed in alpha and gamma motor neurons by(More)
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