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Chinese Journal of Hygiene Rescue(Electronic Edition) ›› 2016, Vol. 02 ›› Issue (05): 315-318. doi: 10.3877/cma.j.issn.2095-9133.2016.05.012

Special Issue:

• Original Article • Previous Articles     Next Articles

Effect of enhanced external counterpulsation on serum nitric oxide system in a dog model of cardiac arrest

Rong Liu1, Zijing Liang1,(), Xiaoxing Liao2, Xin LiI3, Chunlin Hu2, Gang Dai2, Zuopeng Zhang1, Ping Yan1   

  1. 1. Department of Emergency, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
    2. Department of Emergency, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
    3. Department of Emergency, Guangdong General Hospital, Guangzhou 510080, China
  • Received:2016-09-08 Online:2016-10-18 Published:2016-10-18
  • Contact: Zijing Liang
  • About author:
    Corresponding author: Ling Zijing, Email:

Abstract:

Objective

To investigate the effects of enhanced external counterpulsation (EECP) on nitric oxide system in serum in a dog model of cardiac arrest and return of spontaneous circulation(CA-ROSC).

Methods

Animal models of CA were inducedindogs with alternating current. After ROSC by cardiopulmonary resuscitation (CPR), 16 dogs were randomized to either the EECP or control group (n=8 per group) in accordance with the random number table. Each dog of EECP group accepted 3-h EECP from ROSC 1/4h. Venous serum was separatedat baseline before CA, at ROSC 1/4h, ROSC 4h, and ROSC 96h, respectively. The serum concentrations of endothelial nitric oxide synthase (eNOS), neuronal nitric oxide synthase (nNOS), inducible nitric oxide synthase (iNOS) and nitric oxide (NO) of each dogs were measured by using enzyme linked immunosorbent assay (ELISA ).

Results

There was no significant difference in baselinevalues, those of CA modelestablished, serum nNOS between two groups (P>0.05). The mean values of serum NO and eNOSin the EECP groupwere higher than those in the control group at the two points of ROSC4h, 96h (P<0.05 or P<0.01). The mean values of serum iNOS in the EECP groupwerelower than those in the control group at the two points of ROSC4h, 96h (P<0.05).

Conclusion

EECP can increaseserum NO levelof CA-ROSC dogs, underlying mechanism of which relates to upregulation of serum eNOS and downregulation of serum iNOS. Therefore, EECP can ease the damage ofCA model.

Key words: Enhanced external counterpulsation, Cardiac arrest, nitric oxide, endothelial nitric oxide synthase, inducible nitric oxide synthase

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