Key Finding
Moxibustion at BL13 and BL15 significantly reduced myocardial fibrosis and improved cardiac function in heart failure rats by inhibiting ferroptosis through decreased NCOA4 and DMT1 expression.
Researchers in China studied whether moxibustion (a traditional therapy that applies heat to acupuncture points) could help rats with chronic heart failure by reducing heart scarring. They treated rats with heart failure using moxibustion at two specific back points called Feishu (BL13) and Xinshu (BL15) for 15 minutes daily over four weeks. The study found that moxibustion significantly improved heart function and reduced the buildup of scar tissue in the heart muscle. The treatment worked by affecting how cells process iron, a mechanism called ferroptosis that contributes to heart damage. Specifically, moxibustion decreased proteins involved in iron metabolism (NCOA4 and DMT1) and reduced collagen deposits that cause heart stiffness. When researchers gave rats a drug called rapamycin that blocks the beneficial effects of moxibustion, the improvements disappeared, confirming how the treatment works. The rats receiving moxibustion showed better heart pumping ability and healthier heart muscle cells under microscopic examination. This animal study suggests moxibustion may help manage chronic heart failure by targeting a specific cellular process that leads to heart scarring. While these results are promising, this was an animal study and more research is needed to determine if similar benefits occur in humans with heart failure. If you're considering moxibustion for any heart condition, consult with both your cardiologist and a qualified, licensed acupuncturist experienced in cardiovascular conditions.
This controlled rat study (n=31) examined moxibustion's effect on myocardial fibrosis in chronic heart failure via ferroptosis pathways. Rats underwent left coronary artery ligation, then received mild moxibustion at bilateral BL13 and BL15 for 15 minutes daily for 4 weeks. Compared to model controls, moxibustion significantly improved ejection fraction and fractional shortening (P<0.05-0.01), reduced myocardial fibrosis area (P<0.01), and decreased NCOA4/DMT1 mRNA and protein expression (P<0.01). Immunofluorescence showed reduced NCOA4-LC3B colocalization, indicating inhibited ferritinophagy. Collagen III expression decreased at both mRNA and protein levels (P<0.01). Rapamycin administration reversed moxibustion's benefits, confirming the autophagy-mediated mechanism. Transmission electron microscopy demonstrated improved mitochondrial morphology post-treatment. Clinical implications: Moxibustion at back-shu points may ameliorate CHF-related cardiac fibrosis by modulating iron metabolism and inhibiting ferroptosis, warranting human trials for integrative cardiology protocols.
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