Electroacupuncture alleviates cisplatin-induced nausea in rats

Area of Science:

• Neuroscience
• Gastroenterology
• Integrative Medicine

Background:

• Chemotherapy often causes nausea and vomiting, significantly impacting patient quality of life.
• Acupuncture, particularly electroacupuncture (EA), shows promise in managing these side effects.
• The precise mechanisms underlying EA's anti-emetic effects require further investigation.

Purpose of the Study:

• To explore the underlying mechanisms of electroacupuncture's (EA) anti-emetic effects in a rat model of chemotherapy-induced nausea and vomiting (CINV).

Main Methods:

• A rat model of CINV was established using cisplatin administration.
• EA was applied at specific acupoints (CV12, PC6) or sham points.
• Nausea and vomiting severity were assessed via kaolin intake, food intake, and body weight changes.
• Serotonin (5-HT) levels in the duodenum and c-Fos expression in the nucleus of the solitary tract (NTS) were quantified.

Main Results:

• EA at the CV12 acupoint significantly reversed cisplatin-induced nausea and vomiting markers.
• EA at CV12 attenuated elevated duodenal serotonin (5-HT) and suppressed c-Fos expression in the NTS.
• EA at the PC6 acupoint showed limited effects on nausea/vomiting and physiological markers.

Conclusions:

• Electroacupuncture demonstrates significant anti-emetic effects in a rat model of CINV.
• The anti-emetic action of EA is likely mediated by inhibiting duodenal serotonin release and modulating NTS activity.
• Findings suggest EA as a potential therapeutic strategy for managing chemotherapy-induced nausea and vomiting.