Protective Mechanism of Preventative Moxibustion at Tianshu Acupoint (ST25) on Intestinal Barrier in UC Rats / 世界科学技术-中医药现代化

Objective: To observe the effect of anti-inflammatory by preventative moxibustion at Tianshu Acupoint (ST25) on UC rats, and to investigate the protective mechanism of preventative moxibustion at Tianshu Acupoint (ST25) onintestinal mucosal barrier in UC rats. Methods: A total of 28 male Sprague-Dawley rats were randomly divided into thenormal group (NC), the ulcerative colitis group (UC), the herb-partitioned moxibustion pretreatment group (HM+P), thewarming moxibustion pretreatment group (WM+P), with 7 in each group. The HM+P and the WM+P were treated withherb-partitioned moxibustion and warming moxibustion for 7 days before the model was established. After pretreatment, the UC, the HM+P and the WM+P were given 4％ dextran sodium sulfate solution for 7 days. Observe the rat pathologicalchanges of colon tissue by HE staining, detect the protein expression in rat colon tissue by immunohistochemistry andwestern blot. Results: compared with the NC group, the pathological scores were increased, the expression of occludin, JAM1, MUC2, ZO-1 were decreased and the expression of NF-κBp65, IL-1βincreased in UC group (P ＜ 0.05);compared with the UC group, the pathological score decreased, the protein expression of occludin, JAM1, MUC2, ZO-1 increased, the protein expression of NF-κBp65, IL-1βdecreased in HM + P group (P ＜ 0.05), the Pathological scoredecreased, the Protein expression of occludin, MUC2, ZO-1 increased, the Protein expression of IL-1β decreased inWM + P group (P ＜ 0.05) . Conclusion: The herb-partitioned moxibustion pretreatment and the warming moxibustionpretreatment could increase the expression of intestinal barrier related proteins in UC rats, it may be one of themechanisms of moxibustion to relieve colonic inflammation of UC.

[Effects of preventative moxibustion on AMPK and mTOR in myocardial tissue in rats with exhaustive exercise].

OBJECTIVE: To observe the effects of preventative moxibustion on adenosine monophosphate-activated protein kinase (AMPK) and mammalian target of rapamycin (mTOR) in myocardial tissue in rats with exhaustive exercise, and to explore the action mechanism of preventative moxibustion for myocardial injury by exhaustive exercise. METHODS: Eighteen SD male rats were randomly divided into a blank group, an exhaustive exercise group and a moxibustion group, 6 rats in each one. Rats in the blank group were treated with immobilization for 5 min per day, without any intervention. Rats in the exhaustive exercise group were treated with no intervention in the first 10 days. Rats in the moxibustion group were treated with moxibustion at "Zusanli" (ST 36) and "Guanyuan" (CV 4), 5 cones for each acupoint, for 10 days.On 11th day, rats in the exhaustive exercise group and moxibustion group were sacrificed to collect sample after exhaustive swimming, and time of exhaustive exercise was recorded. HE staining was used to observe the inflammatory changes of myocardial tissue; colorimetric method was used to measure lactic dehydrogenase (LDH), activity of superoxide dismutase (SOD) and malonaldehyde (MDA); immune suppression method was used to measure the content of creatine kinase isoenzyme (CK-MB) in serum; Elisa method was used to measure the content of troponinT (cTnT) in serum; western blot method was applied to measure the content of AMPKα2 and mTOR in myocardial tissue. RESULTS: The time of exhaustive exercise was (4 831.17±689.88) s in the moxibustion group, which was longer than (3 509.50±1 232.49) s in the exhaustive exercise group (P<0.05); HE staining indicated structure of the myocardium was clear and inflammatory cell infiltration was reduced in the moxibustion group. Compared with the blank group, the contents of serum LDH, CK-MB, cTnT were increased in the exhaustive exercise group (all P<0.05); MDA content was increased and SOD activity was decreased (both P<0.05); the AMPK α2 content in myocardial tissue was increased and the mTOR content was decreased (both P<0.05). Compared with the exhaustive exercise group, the contents of serum LDH, CK-MB, cTnT were reduced in the moxibustion group (all P<0.05); MDA content was decreased and SOD activity was increased (both P<0.05); the AMPKα2 content in myocardial tissue was increased, and the mTOR content was decreased (both P<0.05); AMPKα2 and mTOR were negatively correlated (r=-0.764, P<0.05). CONCLUSIONS: Preventative moxibustion is likely to regulate the expression of AMPK and mTOR to induce signaling pathway to recover myocardial injury by exhaustive exercise.

Effects of preventative moxibustion on AMPK and mTOR in myocardial tissue in rats with exhaustive exercise / 中国针灸

<p><b>OBJECTIVE</b>To observe the effects of preventative moxibustion on adenosine monophosphate-activated protein kinase (AMPK) and mammalian target of rapamycin (mTOR) in myocardial tissue in rats with exhaustive exercise, and to explore the action mechanism of preventative moxibustion for myocardial injury by exhaustive exercise.</p><p><b>METHODS</b>Eighteen SD male rats were randomly divided into a blank group, an exhaustive exercise group and a moxibustion group, 6 rats in each one. Rats in the blank group were treated with immobilization for 5 min per day, without any intervention. Rats in the exhaustive exercise group were treated with no intervention in the first 10 days. Rats in the moxibustion group were treated with moxibustion at "Zusanli" (ST 36) and "Guanyuan" (CV 4), 5 cones for each acupoint, for 10 days.On 11th day, rats in the exhaustive exercise group and moxibustion group were sacrificed to collect sample after exhaustive swimming, and time of exhaustive exercise was recorded. HE staining was used to observe the inflammatory changes of myocardial tissue; colorimetric method was used to measure lactic dehydrogenase (LDH), activity of superoxide dismutase (SOD) and malonaldehyde (MDA); immune suppression method was used to measure the content of creatine kinase isoenzyme (CK-MB) in serum; Elisa method was used to measure the content of troponinT (cTnT) in serum; western blot method was applied to measure the content of AMPKα2 and mTOR in myocardial tissue.</p><p><b>RESULTS</b>The time of exhaustive exercise was (4 831.17±689.88) s in the moxibustion group, which was longer than (3 509.50±1 232.49) s in the exhaustive exercise group (<0.05); HE staining indicated structure of the myocardium was clear and inflammatory cell infiltration was reduced in the moxibustion group. Compared with the blank group, the contents of serum LDH, CK-MB, cTnT were increased in the exhaustive exercise group (all<0.05); MDA content was increased and SOD activity was decreased (both<0.05); the AMPK α2 content in myocardial tissue was increased and the mTOR content was decreased (both<0.05). Compared with the exhaustive exercise group, the contents of serum LDH, CK-MB, cTnT were reduced in the moxibustion group (all<0.05); MDA content was decreased and SOD activity was increased (both<0.05); the AMPKα2 content in myocardial tissue was increased, and the mTOR content was decreased (both<0.05); AMPKα2 and mTOR were negatively correlated (=-0.764,<0.05).</p><p><b>CONCLUSIONS</b>Preventative moxibustion is likely to regulate the expression of AMPK and mTOR to induce signaling pathway to recover myocardial injury by exhaustive exercise.</p>