نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی‌ارشد، گروه فیزیولوژی، دانشکدة پزشکی، دانشگاه علوم پزشکی اراک، اراک، ایران

2 استادیار، گروه فیزیولوژی، دانشکدة پزشکی، دانشگاه علوم پزشکی اراک، اراک، ایران

3 دانشیار، گروه فیزیولوژی، دانشکدة پزشکی، دانشگاه علوم پزشکی اراک، اراک، ایران

4 استادیار، گروه بیوتکنولوژی و پزشکی ملکولی، دانشکدة پزشکی، دانشگاه علوم پزشکی اراک، اراک، ایران

چکیده

اهداف با توجه به افزایش سوءمصرف اپیوئیدها در بین زنان و آثار پاتوفیزیولوژیکی مواجهة مزمن اپیوئیدها بر مادران که ممکن است غیرمستقیم فرزندان آن‌ها را تحت تأثیر قراردهد، در این ‌مطالعه پیامدهای مصرف مزمن مرفین و ترک آن پیش از شروع بارداری بر حافظة فضایی، حافظة جتنابی و تمایل به مصرف مرفین فرزندان نسل اول بررسی شده است.
مواد و روش‌ها دوازده سر موش صحرایی مادة ویستار به‌صورت تصادفی به دو گروه تقسیم شد. گروه مادران مرفینی دو ماه محلول مرفین (mg/ml 4/0) و گروه مادران کنترل آب معمولی دریافت کردند. یک ماه پس از قطع مصرف مرفین جفت‌گیری ماده‌ها انجام شد. بعد از زایمان، فرزندان به‌صورت مجزا در گروه‌های نر و ماده تقسیم و به‌عنوان گروه‌های هدف مطالعه استفاده شد. حافظة فضایی با ماز آبی موریس، حافظة جتنابی با شاتل باکس و تمایل به مصرف مرفین با اندازه‌گیری مصرف اختیاری محلول مرفین بررسی شد.
یافته‌ها میانگین مصرف روزانة محلول مرفین در فرزندان نر و مادة مادران مرفینی به‌صورت معناداری بالاتر از فرزندان نر و مادة مادران کنترل بود (05/0 <P). نتایج یادگیری در ماز آبی نشان داد که فرزندان نر مادران مرفینی به‌طور معناداری نسبت به فرزندان نر گروه کنترل مسافت و زمان بیشتری را برای رسیدن به سکو صرف می‌کنند (01/0 <P). همچنین، در آزمون به‌خاطرآوری نیز فرزندان نر مادران مرفینی در مقایسه با فرزندان نر مادران کنترل دفعات کمتری از محل سکو عبور کرده‌اند (001/0 <P). تفاوت معناداری بین گروه‌های آزمایشی در میزان یادگیری اجتنابی وجود نداشت (05/0 >P).
نتیجه‌گیری مطالعة حاضر نشان داد مصرف مزمن مرفین پیش از بارداری، سبب اختلال در حافظة فضایی فرزندان نر شد. همچنین، تمایل به مصرف مرفین در فرزندان نر و ماده را افزایش داد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Chronic Exposure of Female Rats with Morphine before the Gestation Causes Reduction of Spatial Memory and Increase of Vulnerability to Opiate Intake in Next Generation Offspring

نویسندگان [English]

  • Neda Moulaei 1
  • Mehdi Sadegh 2
  • Mohammad Reza Palizvan 3
  • Mahdieh Mondanizadeh 4
  • Narges-al-sadat Haeri 1

1 Master Student, Department of Physiology, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran

2 Assistant Professor, Department of Physiology, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran

3 Associate Professor, Department of Physiology, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran

4 Assistant Professor, Department of Biotechnology and Molecular Medicine, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran

چکیده [English]

Background & Objectives: According to the increasing opioids abuse between women and pathophysiological effects of chronic exposure of opioids on mothers which might indirectly affect their offspring, herein, consequences of chronic morphine consumption and its withdrawal before the gestation was investigated on spatial memory, avoidance memory and vulnerability to morphine intake in offspring of first generation.
Materials & Methods: Twelve female Wistar rats were randomly divided into two groups. Morphine mothers group received morphine solution (0.4 mg/ml) for two months. Control mothers group received tab water. One month after stopping morphine consumption, mating was occurred. After the parturition, offspring was divided in separated male and female groups and was used as the target groups of the study. Spatial memory through Water Maze, avoidance memory through Shuttle Box and vulnerability to morphine intake through voluntary consumption of morphine solution were investigated.
Results: Mean of morphine solution consumption in male and female offspring of morphine mothers was significantly higher in compare to male and female offspring of control mothers (P<0.05). Results of learning in Water Maze revealed that male offspring of morphine mothers significantly spent more time and distance to find the platform in compare with male offspring of control (P<0.01). Also, in retention test, male offspring of morphine mothers cross the location of platform significantly fewer than male offspring of control (P<0.001). There was no significant differences in avoidance learning between experimental groups (P<0.05).
Conclusion: Our study revealedchronic morphine consumption before the gestation causesdamage of spatial memory in male offspring and also increases vulnerability to opiate intake of male and female offspring.

کلیدواژه‌ها [English]

  • Addiction
  • dependence
  • Memory
  • opioids
  • Rat
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