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Abstract
Objective: The aim of this study was to evaluate the effect of herb-partition moxibustion on rectal sensory thresholds and to analyse possible mechanism of herb-partition moxibustion in treating chronic visceral hypersensitivity rats.
Methods: Herb-partition moxibustion was administered to chronic visceral hypersensitivity rats for 7 days (once daily). Two moxa cylinders were used for each point in one treatment. Chronic visceral hypersensitivity rats without herb-partition moxibustion and normal rats were chosen as the control groups. Detection of abdominal withdrawal reflex was performed during 30–90 minutes after the first treatment. After seven treatments, a segment of distal colon (5 cm in length) was harvested, and 5-hydroxytryptamine concentration in the colon tissue was detected by enzyme-linked immunosorbent assay.
Results: Herb-partition moxibustion significantly depressed abnormally increased AWR scores from the rectus abdominis in response to colorectal distention stimulation at strengths of 40 and 60 mmHg. Herb-partition moxibustion decreased 5-hydroxytryptamine concentration in colon tissue of chronic visceral hypersensitivity rats.
Conclusion: Herb-partition moxibustion enhances the pain threshold of chronic visceral hypersensitivity rats and restores normal sensitivity by 5-hydroxytryptamine concentration decreased in the colon tissue. However, whether herb-partition moxibustion could enhance the pain threshold of IBS patients or not is not concluded in this study because of only small sample rats experiment.