Effect of Electroacupuncture at Zusanli(ST 36), Liangmen(ST 21)and Sanyinjiao(SP 6)on NLRP3 Inflammasome and Downstream Inflammatory Factors in Diabetic Gastroparesis Rats
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Effect of Electroacupuncture at Zusanli(ST 36), Liangmen(ST 21)and Sanyinjiao(SP 6)on NLRP3 Inflammasome and Downstream Inflammatory Factors in Diabetic Gastroparesis Rats
Journal of Traditional Chinese MedicineVol. 64, Issue 9, Pages: 948-953(2023)
XIAO Le,WEI Xing,ZHANG Tianhua,et al.Effect of Electroacupuncture at Zusanli(ST 36), Liangmen(ST 21)and Sanyinjiao(SP 6)on NLRP3 Inflammasome and Downstream Inflammatory Factors in Diabetic Gastroparesis Rats[J].Journal of Traditional Chinese Medicine,2023,64(09):948-953.
XIAO Le,WEI Xing,ZHANG Tianhua,et al.Effect of Electroacupuncture at Zusanli(ST 36), Liangmen(ST 21)and Sanyinjiao(SP 6)on NLRP3 Inflammasome and Downstream Inflammatory Factors in Diabetic Gastroparesis Rats[J].Journal of Traditional Chinese Medicine,2023,64(09):948-953.DOI: 10.13288/j.11-2166/r.2023.09.014.
Effect of Electroacupuncture at Zusanli(ST 36), Liangmen(ST 21)and Sanyinjiao(SP 6)on NLRP3 Inflammasome and Downstream Inflammatory Factors in Diabetic Gastroparesis Rats
To explore the possible mechanism of electroacupuncture (EA) at Zusanli (ST 36), Liangmen (ST 21) and Sanyinjiao (SP 6) in the treatment of diabetic gastroparesis (DGP) rats by regulating inflammatory factors.
Methods
2
Fifty SD rats were randomly divided into a blank group (n=13) and a modeling group (n=37). The modeling rats were injected intraperitoneally with 2% streptozotocin (STZ) solution and given irregular high sugar and high fat diet for 8 weeks to prepare DGP rat model. Thirty successfully modeled rats were randomly divided into model group, EA group and metoclopramide group, with 10 rats in each group. In the EA group, unilateral “Zusanli”, “Liangmen” and “Sanyinjiao” were needled, 15 min each time, once daily, and acupoints on the left and right side were used in turn. In the metoclopramide group, 10 ml/kg of 0.9% metoclopramide solution was given by gavage, while in the blank group and the model group, 10 ml/kg of normal saline by gavage was given, once daily, five days of treatment and two days of rest as a course, for a total of three courses. The rats' blood glucose and urine glucose values were measured once every week, and on the second day of the last treatment, sample was collected to determine the gastric emptying rate and small intestine propulsion rate. The levels of NOD-like receptor thermoprotein domain-related protein 3 (NLRP3) inflammasome, interleukin 18 (IL-18), and interleukin 1β (IL-1β) in gastric antrum tissue were detected by enzyme-linked immunoassay (ELISA). Histopathological morphology of gastric antrum was observed by HE staining.
Results
2
Compared to the blank group, the model group had more obvious gastric mucosal inflammatory reaction and a large number of inflammatory cell infiltration; the gastric emptying rate and the small intestine propulsion rate were significantly lower in the model groups, while the levels of blood glucose, urine glucose, NLRP3, IL-1β, and IL-18 inflammatory factors were significantly higher (
P
<0.01). Compared to the model group, both the EA group and metoclopramide group had improved gastric mucosa to varying degrees, reduced inflammatory cells infiltration, decreased urine glucose level, increased gastric emptying rate and gastrointestinal propulsion rate, and the EA group had lowered blood glucose level as well (
P
<0.01). Compared to the metoclopramide group, the EA group had increased NLRP3 level in the gastric antrum (
P
<0.05).
Conclusion
2
EA at Zusanli, Liangmen and Sanyinjiao can improve the delayed gastric emptying of DGP rats and reduce the blood glucose level, and the mechanism may be related to the reduction of inflammatory factor levels and suppression of inflammatory response.
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Keywords
references
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Related Institution
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