اثر تجویز طولانی مدت پرگابالین بر حافظه‌ی شناختی کوتاه مدت Rat با استفاده از مدل آزمون تشخیص شیء جدید

نوع مقاله : مقاله های پژوهشی

نویسندگان

1 استادیار، گروه فارماکولوژی- سم‌شناسی، دانشکده‌ی داروسازی و علوم دارویی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

2 استاد، گروه فارماکولوژی- سم‌شناسی، دانشکده‌ی داروسازی و علوم دارویی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

3 دانشجوی داروسازی، گروه فارماکولوژی- سم‌شناسی، دانشکده‌ی داروسازی و علوم دارویی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

چکیده

مقدمه: پرگابالین، به عنوان یک داروی کمکی در صرع پارشیال، فیبرومیالژی، دردهای نوروپاتیک و اختلال اضطراب عمومی کاربرد دارد. این مطالعه، با هدف تعیین اثرات پرگابالین بر روی حافظه‌ی Rat با استفاده از روش Object Recognition Task (ORT) طراحی شد.روش‌ها: این مطالعه، یک مطالعه‌ی حیوانی تجربی است. Ratهای نر نژاد Wistar در 4 گروه 7تایی تقسیم شدند و به مدت 28 روز 10، 30 و یا 100 میلی‌گرم/کیلوگرم پرگابالین و یا همان حجم نرمال‌سالین به آن‌ها تزریق شد. سپس، حیوانات برای ارزیابی حافظه‌ی فضایی در عرصه‌ی ORT و طی دو دوره‌ی 3 دقیقه‌ای با فاصله‌ی 1 ساعت در مواجهه با اشیای مشابه و یا متفاوت قرار گرفتند. شاخص‌های Discrimination (2d)، Recognition (R) و فرکانس لمس شیء جدید (f)، در دوره‌ی دوم مواجهه با اشیا (2T)، با هم مقایسه شدند. 050/0 > P به عنوان معیار معنی‌دار بودن اختلاف در نظر گرفته شد.یافته‌ها: تجویز دزهای 10، 30 و 100 میلی‌گرم/کیلوگرم به مدت 28 روز، به طور قابل توجهی شاخص 2d (به ترتیب 050/0 > P، 010/0 > P و 001/0 > P)، R (به ترتیب 010/0 > P، 001/0 > P و 001/0 > P) و فرکانس اکتشاف (به ترتیب 050/0 < P، 050/0 > P و 001/0 > P) را در دوره‌ی 2T نسبت به گروه شاهد کاهش داد. 100 میلی‌گرم/کیلوگرم پرگابالین باعث کاهش بیشتری در عوامل بالا نسبت به 10 میلی‌گرم/کیلوگرم دارو شد (به ترتیب 050/0 > P، 001/0 > P و 050/0 > P).نتیجه‌گیری: یافته‌های این تحقیق نشان می‌دهد تجویز طولانی مدت دزهای مختلف پرگابالین، حافظه‌ی شناختی Rat را در تشخیص شیء جدید مختل می‌کند. این کاهش حافظه، از الگوی وابسته به دز پیروی می‌کند.

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of Long-Term Pregabalin Administration on Memory of Rat in Object Recognition Task

نویسندگان [English]

  • Ali Hosseini-Sharifabad 1
  • Mohammad Rabbani 2
  • Ali Sheikh-Darani 3
1 Assistant Professor, Department of Pharmacology and Toxicology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
2 Professor, Department of Pharmacology and Toxicology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
3 Student of Pharmacy, Department of Pharmacology and Toxicology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
چکیده [English]

Background: Pregabalin is used as an adjunctive therapy in partial seizure, fibromyalgia, neuropathic pain, and generalized anxiety disorders. This study was designed to determine the effects of pregabalin on memory of rat using object recognition task (ORT) method.Methods: Male wistar rats were divided into 4 groups (n = 7), and were injected 10, 30, or 100 mg/kg/day of pregabalin or normal saline for 28 days. For evaluation of memory, animals underwent ORT during two 3-minute trials with an one-hour interval to explore similar and similar or different objects. For this reason, the discrimination (d2) and recognition (R) indices, as well as the frequency of new object exploration (f), were compared in the second period of exposure (T2). The P-values of less than 0.05 were considered as statistically significant.Findings: Administration of pregabalin with the dose of 10, 30, or 100 mg/kg/day for 28 days significantly reduced the d2 (P < 0.050, P < 0.010, and P < 0.001, respectively) and R (P < 0.010, P < 0.001, and P < 0.001, respectively) indices, and frequency of exploration (P < 0.050, P < 0.050, and P < 0.001, respectively) in the T2 trials compared to the control group. 100 mg/kg of pregabalin showed more decrease in these factors compared to the dose of 10 mg/kg (P < 0.050, P < 0.001, and P < 0.050, respectively).Conclusion: The findings of this study indicate that long-term administration of different doses of pregabalin disrupts cognitive memory to new object in rats. The memory decline follows a dose-dependent pattern.

کلیدواژه‌ها [English]

  • Pregabalin
  • Memory
  • Rats
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