Acta Pharmacol Sin. 2000 Nov;21(11):1002-4.
Chen Y, Zhang YH, Bie BH, Zhao ZQ. Shanghai Institute of Physiology, Chinese Academy of Sciences, Shanghai 200031, China
Twenty eight percent of the spontaneously active afferent fibers from sciatic nerves in the sympathectomized rats responded to ATP, either with an increase or with a decrease in spontaneous firing. However, none of the fibers from the sciatic nerves in the intact rats was activated by ATP. CONCLUSION: Sympathectomy induces novel purinergic sensitivity in A afferents from sciatic nerve.
http://www.ncbi.nlm.nih.gov/pubmed/11501053