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Journal of Chinese Integrative Medicine ›› 2011, Vol. 9 ›› Issue (6): 658-664.doi: 10.3736/jcim20110613

Special Issue: Acupuncture & Moxibustion

• Original Experimental Research • Previous Articles     Next Articles

Effects of electroacupuncture at Tianshu (ST25) on pro- and anti-inflammatory cytokines in rats with severe acute pancreatitis

Qi-ming Xue, Lu Huang, Ning Li()   

  1. Department of Integrated Chinese and Western Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
  • Received:2011-03-05 Accepted:2011-04-07 Online:2011-06-20 Published:2011-06-15
  • Contact: Li Ning E-mail:zhenjiuhuaxi@163.cm

Objective: To observe the effects of electroacupuncture (EA) at Tianshu (ST25) on pro- and anti-inflammatory cytokines in sodium taurocholate-induced severe acute pancreatitis (SAP) in rats.
Methods: Sixty-six male Sprague-Dawley rats were randomly divided into three groups: sham-operation group, SAP group and EA group. An SAP model was established by injecting 3.5% sodium taurocholate at a dose of 1 mL/kg through puncturing the pancreatic duct. In the EA group, EA at ST25 was performed with sparse-dense wave (2/100 Hz, 2 mA for 30 min) immediately after sodium taurocholate injection and 30 min before sacrifice. Rats were sacrificed at 3 (n=7), 6 (n=7) and 12 h (n=8) after operation. Levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and IL-10 in serum were estimated by enzyme-linked immunosorbent assay. Pathological changes of pancreatic tissues were examined by hematoxylin and eosin staining and observed under a microscope and also scored.
Results: The levels of serum TNF-α and IL-6 of SAP rats were significantly higher than those of sham-operation rats at 3, 6 and 12 h. The level of IL-10 in serum of SAP rats was significantly higher than that of sham-operation rats at 3 and 6 h (P<0.05). EA at ST25 down-regulated the levels of TNF-α and IL-6 in serum and up-regulated the level of IL-10 and the ratio of IL-10/TNF-α, also attenuated the morphological damages at 6 and 12 h (P<0.05) in rats with SAP. The pathological scores of pancreatic tissues in the EA group were significantly less than those in the SAP group at 6 and 12 h (P<0.05).
Conclusion: EA at ST25 may have a therapeutic effect on rats with SAP by down-regulating the levels of TNF-α and IL-6 and up-regulating the level of IL-10 to re-establish the balance of pro- and anti-inflammatory cytokines, and to ameliorate the inflammatory response of SAP.

Key words: severe acute pancreatitis, point ST25 (Tianshu), tumor necrosis factor-a, interleukin-6, interleukin-10, electroacupuncture, rats

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Figure 1

Pathological changes of pancreatic tissues of rats in different groups observed by hematoxylin and eosin staining (Light microscopy, ×200) A-C: Sham-operation group; D-F: Severe acute pancreatitis group; G-I: Electroacupuncture group."

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