Lin CT, Lin MJ, Chen YP, Lee KC, Huang KC, Chang SF, Chen CN. Long-term antihypertensive effects of far-infrared ray irradiated from wooden board in spontaneously hypertensive rats.
BMC Complement Altern Med 2016;
16:57. [PMID:
26857237 PMCID:
PMC4745157 DOI:
10.1186/s12906-016-1040-1]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 02/05/2016] [Indexed: 02/07/2023]
Abstract
Background
Far-infrared ray (FIR) has been widely used in promoting health and has been shown to exert beneficial effects in vascular function. The non-thermal effect of FIR has been found to play a significant role in the protective effect on some vascular-related diseases, but its protective effects and use against hypertension have not been clearly presented.
Methods
In the present study, by using a wooden board coated with FIR-irradiated materials, we evaluated the long-term antihypertensive effect on spontaneously hypertensive rats (SHRs) in the environment in contact with the FIR-irradiated wooden board. SHRs were placed on the wooden board with or without FIR radiation for 4 weeks.
Results
The systolic blood pressure (BP) of SHRs undergoing different treatments was measured weekly using a tail-cuff method. FIR radiation significantly reduced the systolic BP of the SHRs along with a decreasing plasma level of angiotensin II and an increasing plasma level of bradykinin. In addition, long-term contact of FIR did not significantly affect the BP in normotensive Wistar Kyoto rats (WKYs).
Conclusions
Our results provided the evidence based on which FIR radiation could be considered an effective non-pharmacological choice for preventing hypertension.
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