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[Influence of electroacupuncture on the expression of cyclooxygenase mRNA and protein in rats with air-pouch plus recombinant human IL-1beta induced inflammation at the back].
Zhen Ci Yan Jiu 2009; 34(3):159-62ZC

Abstract

OBJECTIVE

To observe the effect of electroacupuncture (EA) on changes of cyclooxygenase (COX)-2 mRNA and protein expression after inflammation occurrence at the back by application of human recombinant IL-1beta (hr IL-Ibeta) plus air-pouch in rats, so as to analyze the relativity between EA-induced changes of COX-2 expression and proinflammatory cytokines regulative pathway.

METHODS

Ninety female Wistar rats were randomized into control, model, and EA groups with 30 cases in each. Inflammatory model was established by subcutaneous implantation of a sterilized hollow teflon cylinder (sac, 1.5 mi in volume) at the back and intrasaccal injection of hr IL-1beta (10 ng/ml). EA (2 Hz, 1 mA) was immediately applied to "Quchi" (LI 11) for 30 min. Exudate in the sac was withdrawn at various intervals after hr IL-1beta-injection for assaying COX-2 mRNA expression with RT-PCR and protein expression with Western Blotting.

RESULTS

In comparison with control group, one hour (h) after hr IL-1beta-injection, COX-2 mRNA and protein expression levels were up-regulated significantly in model group (P < 0.01); while compared to model group, COX-2 mRNA and protein expression levels in EA group were down-regulated considerably (P < 0.05). 5 h and 24 h after hr IL-1beta-injection, COX-2 mRNA expression in model and EA groups was significantly higher than that in control group (P < 0.01), and no significant differences were found between model and EA groups in COX-2 mRNA expression levels (P > 0.05). On the contrary, 5 h after administration of hr IL-1beta, COX-2 protein expression in model group was significantly higher than that in control group (P < 0.05). On the 24 h after hr Ibeta-1beta-injection, no significant differences were found in COX-2 protein expression levels among control, model and EA groups (P > 0.05).

CONCLUSION

EA can effectively suppress hr IL-1beta-injection induced up-regulation of COX-2 mRNA and protein expression in the rats, suggesting a close relativity between the regulation of proinflammatory cytokines and EA-induced inhibition of COX-2 mRNA and protein expression.

Authors+Show Affiliations

Department of Acu-moxibusion, Zhejiang Hospital of Integrated Chinese & Western Medicine, Hangzhou 310003, China.No affiliation info availableNo affiliation info available

Pub Type(s)

English Abstract
Journal Article
Research Support, Non-U.S. Gov't

Language

chi

PubMed ID

19761107

Citation

Liu, Fang, et al. "[Influence of Electroacupuncture On the Expression of Cyclooxygenase mRNA and Protein in Rats With Air-pouch Plus Recombinant Human IL-1beta Induced Inflammation at the Back]." Zhen Ci Yan Jiu = Acupuncture Research, vol. 34, no. 3, 2009, pp. 159-62.
Liu F, Fang JQ, Shao XM. [Influence of electroacupuncture on the expression of cyclooxygenase mRNA and protein in rats with air-pouch plus recombinant human IL-1beta induced inflammation at the back]. Zhen Ci Yan Jiu. 2009;34(3):159-62.
Liu, F., Fang, J. Q., & Shao, X. M. (2009). [Influence of electroacupuncture on the expression of cyclooxygenase mRNA and protein in rats with air-pouch plus recombinant human IL-1beta induced inflammation at the back]. Zhen Ci Yan Jiu = Acupuncture Research, 34(3), pp. 159-62.
Liu F, Fang JQ, Shao XM. [Influence of Electroacupuncture On the Expression of Cyclooxygenase mRNA and Protein in Rats With Air-pouch Plus Recombinant Human IL-1beta Induced Inflammation at the Back]. Zhen Ci Yan Jiu. 2009;34(3):159-62. PubMed PMID: 19761107.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Influence of electroacupuncture on the expression of cyclooxygenase mRNA and protein in rats with air-pouch plus recombinant human IL-1beta induced inflammation at the back]. AU - Liu,Fang, AU - Fang,Jian-qiao, AU - Shao,Xiao-mei, PY - 2009/9/19/entrez PY - 2009/9/19/pubmed PY - 2009/10/9/medline SP - 159 EP - 62 JF - Zhen ci yan jiu = Acupuncture research JO - Zhen Ci Yan Jiu VL - 34 IS - 3 N2 - OBJECTIVE: To observe the effect of electroacupuncture (EA) on changes of cyclooxygenase (COX)-2 mRNA and protein expression after inflammation occurrence at the back by application of human recombinant IL-1beta (hr IL-Ibeta) plus air-pouch in rats, so as to analyze the relativity between EA-induced changes of COX-2 expression and proinflammatory cytokines regulative pathway. METHODS: Ninety female Wistar rats were randomized into control, model, and EA groups with 30 cases in each. Inflammatory model was established by subcutaneous implantation of a sterilized hollow teflon cylinder (sac, 1.5 mi in volume) at the back and intrasaccal injection of hr IL-1beta (10 ng/ml). EA (2 Hz, 1 mA) was immediately applied to "Quchi" (LI 11) for 30 min. Exudate in the sac was withdrawn at various intervals after hr IL-1beta-injection for assaying COX-2 mRNA expression with RT-PCR and protein expression with Western Blotting. RESULTS: In comparison with control group, one hour (h) after hr IL-1beta-injection, COX-2 mRNA and protein expression levels were up-regulated significantly in model group (P < 0.01); while compared to model group, COX-2 mRNA and protein expression levels in EA group were down-regulated considerably (P < 0.05). 5 h and 24 h after hr IL-1beta-injection, COX-2 mRNA expression in model and EA groups was significantly higher than that in control group (P < 0.01), and no significant differences were found between model and EA groups in COX-2 mRNA expression levels (P > 0.05). On the contrary, 5 h after administration of hr IL-1beta, COX-2 protein expression in model group was significantly higher than that in control group (P < 0.05). On the 24 h after hr Ibeta-1beta-injection, no significant differences were found in COX-2 protein expression levels among control, model and EA groups (P > 0.05). CONCLUSION: EA can effectively suppress hr IL-1beta-injection induced up-regulation of COX-2 mRNA and protein expression in the rats, suggesting a close relativity between the regulation of proinflammatory cytokines and EA-induced inhibition of COX-2 mRNA and protein expression. SN - 1000-0607 UR - https://www.unboundmedicine.com/medline/citation/19761107/[Influence_of_electroacupuncture_on_the_expression_of_cyclooxygenase_mRNA_and_protein_in_rats_with_air_pouch_plus_recombinant_human_IL_1beta_induced_inflammation_at_the_back]_ DB - PRIME DP - Unbound Medicine ER -