[Synaptic potentials in smooth muscle cells]
- PMID: 1026285
[Synaptic potentials in smooth muscle cells]
Abstract
Investigations were carried out on smooth muscle cells (SMC) of rat and rabbit anococcygeus by the method of a double "sugar bridge" in the presence of tetraethylammonium (1 mM/1) in the Krebs solution. Stimulation of the muscle strip by the electric current rectangular pulse of the maximal value and of short duration caused the development of excitatory postsynaptic potentials (EP SP) in the rat and rabbit SMC, and of inhibitory postsynaptic potentials in the rabbit SMC. The value of postsynaptic potentials displayed a linear dependence on the level of the membrane potential. Elimination of chlorine ions from the external solution decreased the EP SP of the SMC of rabbit anococcygeus and shifted the reversion potential in the direction of sodium balance potential. Apparently generation of the EP SP of the SMC of rabbit anococcygeus was associated with the increased permeability of the membrane both for sodium and for chlorine ions.
Similar articles
-
[Coupling of electrical processes on the membrane to the contractile activity of anococcygeus smooth muscle cells].Biull Eksp Biol Med. 1980 Apr;89(4):392-5. Biull Eksp Biol Med. 1980. PMID: 7388152 Russian.
-
Sympathetic neuromuscular transmission in the smooth muscle of guinea-pig prostate gland.Int J Fertil. 1983;28(2):68-77. Int J Fertil. 1983. PMID: 6136479
-
[Mechanism of modulating effect of histamine on the excitation and contraction of smooth muscles of the ureter].Biull Eksp Biol Med. 1982 Sep;94(9):80-2. Biull Eksp Biol Med. 1982. PMID: 7171828 Russian.
-
[Structure and functions of smooth muscle cells].Usp Fiziol Nauk. 1971 Apr-Jun;2(2):26-48. Usp Fiziol Nauk. 1971. PMID: 4347368 Review. Russian. No abstract available.
-
General neurophysiology (bioelectrical aspects).Prog Neurol Psychiatry. 1968;23:21-49. Prog Neurol Psychiatry. 1968. PMID: 4305964 Review. No abstract available.