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Acute effects of a single electroacupuncture session on purinergic signaling and inflammatory markers in patients with chronic nonspecific low back pain: a pilot study.

Purinergic signalling·May 2026·Jardel Cristiano Ecco, Vinicius Ansolin, Adinei Abadio Soares et al.
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Key Finding

A single 20-minute electroacupuncture session significantly increased anti-inflammatory markers and decreased pro-inflammatory cytokines in chronic low back pain patients through modulation of the purinergic signaling system.

What This Means For You

Chronic low back pain affects millions of people worldwide, and researchers are constantly exploring effective treatment options. A recent pilot study investigated whether a single session of electroacupuncture could influence the body's inflammatory response in patients with chronic nonspecific low back pain. Twenty-three patients with chronic low back pain received one 20-minute electroacupuncture treatment. Researchers applied needles at specific acupuncture points on the lower back, legs, and feet, including bladder and spleen meridian points. The needles were connected to mild electrical stimulation at a low frequency. Blood samples were collected before and after the treatment to measure various biochemical markers related to inflammation and cellular signaling. The results showed promising changes after just one session. The electroacupuncture treatment increased the activity of enzymes involved in producing adenosine, a natural compound that helps reduce inflammation and pain. Importantly, patients showed decreased levels of pro-inflammatory cytokines (proteins that promote inflammation) including INF-γ, IL-4, and IL-6, while levels of IL-10, an anti-inflammatory cytokine, increased. This suggests that electroacupuncture may help shift the body from an inflammatory state to an anti-inflammatory one. The study demonstrates that beneficial effects of electroacupuncture may begin immediately, even from the first treatment session, by modulating the body's natural pain and inflammation pathways. While this is a small pilot study and more research is needed, these findings support electroacupuncture as a potential non-pharmacological treatment option for chronic low back pain. If considering electroacupuncture for chronic pain, seek treatment from a licensed acupuncturist with appropriate training in electroacupuncture techniques.

Clinical Notes for Practitioners

This pilot study (n=23) investigated acute biochemical effects of a single electroacupuncture session in chronic nonspecific low back pain patients. The protocol utilized bilateral needling at BL23, BL25, BL40, SP6, and GB-39 with 5mm depth, 2Hz intermittent waves, 10mA pulse width for 20 minutes. Blood analysis revealed significant upregulation of purinergic signaling markers: increased AMP hydrolysis by ecto-5'-nucleotidase/CD73 (p=0.0002), elevated adenosine deaminase activity (p=0.0382), increased extracellular ATP levels (p=0.0036), and enhanced expression of NTPDase/CD39 (p=0.0287) and ecto-5'-nucleotidase/CD73 (p=0.0007). Inflammatory cytokine profiles shifted significantly toward anti-inflammatory: decreased INF-γ (p=0.0192), IL-4 (p=0.0011), and IL-6 (p=0.0156), with increased IL-10 (p=0.0031). Strong negative correlations were observed between CD73 expression and TNF-α, and adenosine deaminase with IL-6. Clinical takeaway: Electroacupuncture demonstrates immediate anti-inflammatory effects through purinergic system modulation, supporting its use as first-line intervention for CNLBP.

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