The Effect of 5-hydroxytryptamine on Smooth Muscles is Impacted by Broadband UV and LED UV and Blue Light
Published: 1 December 2021
International Journal Bioautomation , Volume 25, pp 331-342; https://doi.org/10.7546/ijba.2021.25.4.000819
Abstract: Due to their effects, similar to low-intensity therapy light sources such as light-emitting diodes (LED) and broadband spectrum lamps have recently become commonly used in the diagnosis and treatment of neurodegenerative pathologies, cancer, as well as ageing. Despite the proven positive effects of such therapies, deeper understanding of the light therapies’ biological effects remains unclear. Even more, the molecular mechanisms through which different neurotransmitters, namely serotonin (5-hydroxytryptamine, 5-HT), mediate the organism’s response to radiation are yet indistinct. In this paper, we present the design and development of a specialized system for irradiation of biological objects, which is composed of LED 365 nm and LED 470 nm and a broadband lamp source of UVA/B (350 nm) with intensity, power density and direction, which can be optimized experimentally. The system, named a “water organ bath (wob)”, is used in the current work to irradiate smooth muscle stomach strips of rats. The obtained results prove that the modulation of the spontaneous contractile smooth muscle activity and the potentiation of the effects of major neurotransmitters are executed by the emitted light. The probable explanation for the neurotransmitters photoactivation is that it is the resultant effect of electromagnetic radiation on intracellular enzymes signaling systems.
Keywords: light emitting / optimized / treatment / smooth muscle / hydroxytryptamine / lamps
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