The Effect of PM10 on Ischemia- Reperfusion Induced Arrhythmias in Rats

نویسندگان

  • Esmat Radmanesh
  • Mohammad Badavi
  • Gholamreza Goudarzi
  • Seyyed Ali Mard
چکیده

Epidemiological studies show that particulate matter (PM) is the principal instigator of some adverse clinical symptoms involving cardiovascular diseases. PM exposure can increase experimental infarct size and potentiate myocardial ischemia and arrhythmias in experimental MI models such as ischemia-reperfusion (I/R) injury.The present study was aimed to evaluate the effects of particulate matter (PM10) on ischemiareperfusion induced arrhythmias with emphasis on the protective role of VA as an antioxidant on them. Male Wistar rats were divided into 8 groups (n=10): Control, VAc, Sham, VA, PM1 (0.5 mg/kg), PM2 (2.5 mg/kg), PM3 group (5 mg/kg), PM3 + VA group. Within 48 hours, PM10 was instilled into trachea in two stages. Then the hearts were isolated, transferred to a Langendorff apparatus, and subjected to global ischemia (30 minutes) followed by reperfusion (60 minutes). The ischemiareperfusion induced ventricular arrhythmias were assessed according to the Lambeth conventions.In the present study,the number, incidence and duration of arrhythmiasduring30 minutes ischemia were demonstrated to be more than those in the reperfusion stage. PM exposure increased significantly the number, incidence and duration of arrhythmias in the ischemia and reperfusion duration. Vanillic acid reduced significantly the number, incidence and duration of arrhythmias during the ischemia and reperfusion period.In summary, the results of this study demonstrated that the protective and dysrhythmic effects of VA in the PM exposure rats in I/R model are probably related to its antioxidant properties.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Effects of pretreatment with non hypotensive dose of ramiprilat and losartan on myocardial ischemia-reperfusion induced arrhythmias and infarct size in rats

Introduction: Inhibition of renin angiotensin system represents an important approach in the management of cardiovascular diseases. The aim of this study was to explore the effects of pretreatment with non-hypotensive dose of angiotensin converting enzyme (ACE) inhibitor, ramiprilat and angiotensin type 1 (AT1) receptor blocker, losartan on myocardial infarct size and arrhythmias in a rat mo...

متن کامل

Liver ischemia preconditions the heart against ischemia-reperfusion arrhythmias

Objective(s):This study aimed to examine the hypothesis that an antiarrhythmic effect might be obtained by ischemic preconditioning of the liver, and also to characterize the potential underlying mechanisms. Materials and Methods: Male Wistar rats were anesthetized by thiopental sodium (50 mg/kg, IP) followed by IV injection of heparin (250 IU). Remote ischemic preconditioning (RIPC) was induce...

متن کامل

Effects of Chronic Oral Administration of Natural Honey on Ischemia/Reperfusion-induced Arrhythmias in Isolated Rat Heart

Objective(s) In this study, effects of chronic administration of oral natural honey against ischemia/reperfusion (I/R)-  induced cardiac arrhythmias were investigated in isolated rat heart. Materials and Methods Male Wistar rats were divided into four groups (n= 10-14 rats in each group) and fed with natural honey (1%, 2% and 4% dissolved in the drinking water) for 45 days except for the con...

متن کامل

Acute effect of burn trauma to small skin areas on myocardial ischemia reperfusion

Introduction: It has been reported that traumas such as transverse abdominal incision before myocardial ischemia result in a significantly decreased infarct size. This phenomenon is named remote preconditioning of trauma. Since small skin burn is one of most common traumas, the effect of this injury on ischemia-induced arrhythmias and infarct size was investigated in a rat model of ischemia-...

متن کامل

Antiarrhythmic Effect of the Ethanol Extract of Pomegranate Mesocarp on Isolated Heart Following Ischemia and Reperfusion

Aims: Ischemic heart disease is the most prevalent cause of mortality in current populations. In recent years, many researchers have focused on plants to discover new natural therapeutic agents. The aim of this study was to evaluate the antiarrhythmic effect of the ethanolic extract of pomegranate mesocarp on rat isolated heart following myocardial ischemia and reperfusion. Materials & Methods...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2016