5-Hydroxytryptamine and motility in Fasciola hepatica.
The study motility in Fasciola has been practically very difficult. 5-Hydroxytryptamine (5-HT) has a strong stimulatory action on Fasciola movement, increasing both the amplitude and frequency of contractions, but most of the evidence for a transmitter role of 5-HT at the neuromuscular junction comes from fairly elementary pharmacological and neurochemical studies. As discussed here by Lindy Holden-Dye and Robert Walker, it still remains to be established that the effect of 5-HT on motility is mediated by 5-HT receptors actually present on the muscle cells. Analysis of the transmitter role of 5-HT and the delineation of the receptor type(s) involved in its stimulatory action will require the application of molecular techniques such as patch clamping of muscle cells, and cloning, sequencing and expression of 5-HT receptor complementary DNAs.[1]References
- 5-Hydroxytryptamine and motility in Fasciola hepatica. Holden-Dye, L., Walker, R.J. Parasitol. Today (Regul. Ed.) (1993) [Pubmed]
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