Abstract
We studied the molecular mechanisms responsible for nitric oxide (NO)-evoked modulation of the synaptic function in the frog neuromuscular junction using inhibitors of adenylate and guanylate cyclases and analogs of cyclic nucleotides. It was shown that application of an exogenous donor of NO, sodium nitroprusside, decreased transmitter release and increased the amplitude of voltage-dependent potassium current of the nerve endings. Our results indicate that NO regulates transmitter release and potassium current in the frog neuromuscular junction both via cAMP- and cGMP-dependent mechanisms.
Similar content being viewed by others
REFERENCES
E. M. Schuman and D. V. Madison, “Nitric oxide and synaptic function,” Ann. Rev. Neurosci., 17, 153–183 (1994).
S. Kimura, S. Uchiyama, H. E. Takahashi, and K. Shibuki, “AMP-dependent long-term potentiation of nitric oxide release from cerebellar fibers in rat,” J. Neurosci., 18,No. 21, 8551–8558 (1998).
A. L. Zefirov, R. R. Khaliullina, and A. A. Anuchin, “The effects of exogenous nitric oxide on mediator release and ionic current of motor nerve ending,” Byull. Éksp. Biol. Med., 128,No. 8, 144–147 (1999).
S. A. Lindgren and M. W. Laird, “Nitroprusside inhibits neurotransmitter release at the frog neuromuscular junction,” NeuroReport, 5,No. 16, 2205–2208 (1994).
M. McVey, J. Hill, A. Howlett, and C. Klein, “Adenylyl cyclase, a coincidence detector for nitric oxide,” J. Biol. Chem., 274,No. 27, 18887–18892 (1999).
S. Tertushinkova, X. Yan, and A. Fein, “cGMP inhibits IP3-induced Ca2+ release in intact rat megakaryocytes via cGMP-and camp-dependent protein kinases,” J. Physiol., 512,No. 1, 89–96 (1998).
A. V. Yakovlev, G. F. Sitdikova, and A. L. Zefirov, “Role of cyclic nucleotides in mediating nitric oxide. (II) Effects on transmitter release and the electrogenesis of motor nerve ending,” Dokl. Akad. Nauk, 382,No. 2, 1–14 (2002).
S. Thomas and R. Robitailler, “Differential frequency-dependent regulation of transmitter release by endogenous nitric oxide at the amphibian neuromuscular synapse,” J. Neurosci., 21,No. 4, 1087–1095 (2001).
Z. H. Pan, M. M. Segal, and S. Lipton, “Nitric oxide-related species inhibit neurotransmission but enchance spontaneous miniature synaptic currents in central neuronal culture,” Proc. Natl. Acad. Sci. USA, 93, 15423–15428 (1996).
C. Mehats, C. B. Andersen, M. Filopanti, et al., “Cyclic nucleotide phosphodiesterases and their role in endocrine cell signaling,” Trends Endocrinol. Metab., 13,No. 1, 29–35 (2002).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yakovlev, A.V., Sitdikova, G.F. & Zefirov, A.L. Role of cGMP- and cAMP-Dependent Systems in the Effects of Nitric Oxide on Transmitter Release and Potassium Currents in the Frog Neuromuscular Junction. Neurophysiology 34, 258–260 (2002). https://doi.org/10.1023/A:1020704811861
Issue Date:
DOI: https://doi.org/10.1023/A:1020704811861