اثرات ال-کارنیتین بر روی پارامترهای التهابی و آنژیوژنز در مدل التهابی Air Pouch در موش صحرایی

نوع مقاله : مقاله های پژوهشی

نویسندگان

1 دانشیار، گروه فارماکولوژی، دانشکده‌ی داروسازی، دانشگاه علوم پزشکی تبریز، تبریز، ایران

2 داروساز، کمیته‌ی تحقیقات دانشجویی دانشگاه علوم پزشکی تبریز، تبریز، ایران

3 استاد، گروه فارماکولوژی، دانشکده‌ی داروسازی، دانشگاه علوم پزشکی تبریز، تبریز، ایران

چکیده

مقدمه: این مطالعه، با هدف بررسی اثرات داروی ال-کارنیتین (L-Carnitine یا L-car) بر روی پارامترهای التهابی و آنژیوژنز در مدل التهابی Air pouch انجام شد.روش‌ها: در ناحیه‌ی پشتی موش‌های صحرایی نر نژاد Wistar، پس از بیهوشی به ترتیب 20 و 10 میلی‌لیتر هوای استریل در روزهای 1 و 3 به صورت زیر پوستی تزریق شد. در روز 6، کاراژنین به داخل Pouch تزریق گردید. نرمال‌سالین به عنوان شاهد و L-car با دزهای 250، 500، 1000 و 2000 میکروگرم به ازای هر موش، هم‌زمان با تزریق کاراژنین و همچنین 24 و 48 ساعت بعد از آن به داخل Pouch تزریق شد. بعد از 72 ساعت، مایع داخل Pouch برای تعیین حجم اگزودا و شمارش لکوسیتی و اندازه‌گیری غلظت Vascular endothelial growth factor (VEGF) و Interleukin-1 beta (IL-1ß) جمع‌آوری و بافت گرانولومای تشکیل شده از بدن حیوان جدا و توزین گردید. برای تعیین آنژیوژنز در بافت گرانولوما، از روش سنجش غلظت هموگلوبین استفاده شد.یافته‌ها: L-car با تمام دزهای به کار رفته، تجمع لکوسیتی را در اگزودا کاهش داد (001/0 > P)، اما وزن بافت گرانولوما فقط با دز 2000 میکروگرم کم شد (001/0 > P). حجم اگزودا نیز با تمام دزها و سطح IL-1ß با دزهای 250 و 500 میکروگرم دارو به صورت معنی‌داری کاهش یافتند. L-car، نه تنها اثرات مهاری بر روی VEGF نداشت، بلکه دز 1000 میکروگرم آن سطح VEGF را افزایش داد (010/0 > P).نتیجه‌گیری: L-car، اثرات ضد التهابی دارد، اما با دزهای به کار رفته، فاقد اثر ضد آنژیوژنز در این مدل بود. احتمال می‌رود اثرات ضد التهابی L-car با اثر مهاری آن بر روی IL-1ß مرتبط باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Effects of L-Carnitine on Inflammatory Parameters and Angiogenesis in the Rat Air Pouch Model of Inflammation

نویسندگان [English]

  • Tahereh Eteraf-Oskouei 1
  • Hamed Ghasemoghli 2
  • Moslem Najafi 3
1 Associate Professor, Department of Pharmacology, School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
2 Pharm D, Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
3 Professor, Department of Pharmacology, School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
چکیده [English]

Background: In this study, effects of L-carnitine on inflammatory parameters and angiogenesis were evaluated in the rat air pouch model of inflammation.Methods: Male Wistar rats were anesthetized; 20 and 10 ml sterile air was injected subcutaneously on the back of rats at first and 3rd day. To induce inflammation, carrageenan 2% was injected intrapouch at 6th day. Saline as control and L-carnitine (250, 500, 1000 and 2000 µg/rat) were administrated intrapouch at the same time as the carrageenan injection, 24 and 48 hours after inflammation induction. After 72 hours, the pouches were opened and pouch fluids were collected to determine exudate volume, leukocyte counts, vascular endothelial growth factor (VEGF), and interleukin-1ß (IL-1ß) levels. The granulated tissue was dissected out and weighed. Angiogenesis in the granulation tissues was measured based on the hemoglobin concentration method.Findings: All used doses of L-carnitine reduced the leukocyte accumulation in the pouch fluid (P < 0.001); however, granulation tissue weight was decreased only by dose of 2000 µg (P < 0.001). In addition, L-carnitine significantly reduced volume of exudate in all treatment groups. Moreover, the agent produced inhibitory effect on IL-1ß level by doses of 250 and 500 µg. L-carnitine not only did not show an inhibitory effect on VEGF concentration, but also 1000 µg of L-carnitine increased VEGF level as compared to the control group (P < 0.010).Conclusion: Results of this study showed that the used doses of L-carnitine have anti-inflammatory effects without anti-angiogenesis activity in this model of inflammation. The anti-inflammatory effect of L-carnitine maybe related to its inhibitory effect on IL-1ß.

کلیدواژه‌ها [English]

  • L-carnitine
  • Inflammation
  • Angiogenesis
  • Vascular endothelial growth factor
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