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19 September 2016 : Animal Research  

Gastrodin Pretreatment Impact on Sarcoplasmic Reticulum Calcium Transport ATPase (SERCA) and Calcium Phosphate (PLB) Expression in Rats with Myocardial Ischemia Reperfusion

Yufen LiDE, Xiaomei WangFG, Changli LouABC

DOI: 10.12659/MSM.896835

Med Sci Monit 2016; 22:3309-3315

Abstract

BACKGROUND: Calcium overload, inflammation, and apoptosis play important roles in myocardial ischemia-reperfusion injury (MIRI). Gastrodin pretreatment can alleviate MIRI. This study observed sarcoplasmic reticulum calcium transport ATPase (Ca2+-ATPase, SERCA) and calcium phosphate (PLB) protein expression in the ventricular remodeling process after myocardial infarction to explore the effect of gastrodin pretreatment on MIRI.

MATERIAL AND METHODS: Healthy 7-week-old male SD rats were randomly divided into a sham group (A), a model group (B), and gastrodin pretreatment groups C, D, and E (100, 200, and 400 mg/kg, respectively) with 20 in each group. Anterior descending coronary artery ligation method was used to establish a rat MIRI model with 30-min ischemia and 120-min reperfusion. Cardiac electrophysiological activity was recorded. Serum IL-6 and IL10 levels were determined by ELISA. SERCA activity was tested by colorimetric phosphorus method. SERCA, PLB, and pSer-PLB protein expression were detected by Western blot.

RESULTS: Compared with the sham group, IL-6 and IL-10 levels were elevated, SERCA2a expression was downregulated, and PLB protein was elevated in the model group (P<0.05). pSer16-PLB showed no significant difference among groups, and the ratio of pSer16-PLB/PLB obviously decreased (P<0.05). IL-6 level gradually declined and IL-10 increased in the gastrodin group following concentration elevation. SERCA 2a expression rose in the gastrodin group in a dose-dependent manner (P<0.05). Elevated PLB protein expression showed no significant difference, while pSer16-PLB protein increased (P<0.05), leading to elevated pSer16 PLB/PLB ratio (P<0.05).

CONCLUSIONS: Gastrodin pretreatment alleviates MIRI and inflammation injury by regulating SERCA and PLB expression to decrease calcium overload.

Keywords: Benzyl Alcohols - pharmacology, Calcium - metabolism, Calcium Phosphates - metabolism, Calcium-Binding Proteins - metabolism, Coronary Artery Disease - metabolism, Glucosides - pharmacology, Myocardial Ischemia - therapy, Myocardial Reperfusion - methods, Myocardial Reperfusion Injury - metabolism, Sarcoplasmic Reticulum - metabolism, Sarcoplasmic Reticulum Calcium-Transporting ATPases - biosynthesis

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750