Does alpha2-Adrenoceptor activation by clonidine enhance stimulation-evoked acetylcholine release from spinal cord tissue after nerve ligation in rats?
These results suggest that clonidine enhances depolarization-induced acetylcholine release in neuropathic but not in normal spinal cord tissue. Interestingly, this enhanced acetylcholine release by clonidine occurs in a synaptosomal preparation, consistent with a direct effect on alpha2 adrenoceptors on cholinergic terminals. Enhanced release of acetylcholine by clonidine could contribute to increased analgesia of clonidine in neuropathic pain.
Dialysis patients undergo mitral repair less frequently, although repair success is equally likely when attempted among dialysis versus nondialysis patients. Dialysis-dependent renal failure is associated strongly with early mortality and major morbidity. However, procedure selection (repair vs replacement) does not appear to have a clinically meaningful impact on these short-term outcomes.