اثر عصاره آبی الکلی بخش‌های هوایی اسطوخودوس خراسانی (Nepeta menthoides) بر یادگیری و حافظه در موش‌های صحرائی نر دیابتی شده با استرپتوزوتوسین

نویسندگان

1 دانشکده پزشکی، دانشگاه شاهد، تهران، ایران

2 مرکز تحقیقات نوروفیزیولوژی، دانشگاه شاهد، تهران، ایران

چکیده

مقدمه و هدف: دیابت قندی یک اختلال متابولیک شایع است که سبب عوارض نامطلوبی از جمله اختلال حافظه و یادگیری می‌گردد. گزارش شده است که اسطوخودوس خراسانی موجب بهبود حافظه و یادگیری می گردد. لذا هدف تحقیق حاضر، بررسی اثر عصاره اسطوخودوس خراسانی بر یادگیری و حافظه ناشی از دیابت در موش‌های صحرایی است.
 
مواد و روش‌ها: موش‌های صحرایی نر به تعداد 40 سر به 4 گروه کنترل، کنترل دیابتی، کنترل تحت تیمار با عصاره اسطوخودوس خراسانی، دیابتی تحت تیمار با عصاره اسطوخودوس خراسانی تقسیم گردیدند. برای دیابتی نمودن حیوانات از تزریق داخل صفاقی تک دوز استرپتوزوتوسین استفاده شد. پس از گذشت 6 هفته، درمان با عصاره به فرم تزریق داخل صفاقی، به میزان 400 میلی‌گرم بر کیلوگرم روزانه به مدت دو هفته نیم ساعت قبل از انجام تستهای رفتاری صورت گرفت. جهت ارزیابی یادگیری و حافظه از ماز شعاعی هشت بازویی و تست آماری Two way repeated-measures ANOVA و در سنجش قند از آنوای یک طرفه استفاده شد.
 
نتایج: دیابت موجب آسیب یادگیری و حافظه به شکل افزایش خطاهای حافظه کاری و مرجع گردید و مصرف عصاره اسطوخودوس خراسانی در گروه دیابتی سبب کاهش معنی‌دار در تعداد خطاهای مربوطه گردید. اسطوخودوس خراسانی همچنین موجب کاهش قند خون در گروه دیابتی شد.
 
نتیجه‌گیری: مصرف عصاره اسطوخودوس خراسانی در موش‌های دیابتی سبب بهبود اختلال حافظه و یادگیری ناشی از دیابت شد. این اثر می‌تواند حداقل بخشی ناشی از کاهش قند خون باشد.

کلیدواژه‌ها

عنوان مقاله [English]

The effect of Nepeta menthoides aerial parts hydroalcoholic extract on learning and memory in male streptozotocin-induced diabetic rat

نویسندگان [English]

  • Motahare Poorgholam 1
  • Batool Rahmati 2
  • Maryam Rahnama-ye Bashm 1
چکیده [English]

Background and Objective: Diabetes mellitus is a common metabolic disorder that causes
undesirable effects including learning and memory impairment. It has been reported that Nepeta menthoides improves memory and learning. Therefore, the aim of this study was to evaluate the effects of Nepeta menthoides on learning and memory impairment related to diabetes in rats.
 
Materials and Methods: Forty male rats were divided into 4 groups including control, diabetic control, control group under treatment with extract of Nepeta menthoides, and diabetic group under treatment with extract of Nepeta menthoides. A single dose of streptozotocin intraperitoneally was used for diabetes induction in diabetic animals. After 6 weeks, Nepeta menthoides treatment was performed as an intraperitoneal injection of 400 mg/kg/day for two weeks, 30 min before each behavioral test. The eight-arm radial maze method with two-way repeated measures ANOVA test were used to evaluate learning and memory and one-way ANOVA was used for comparing blood glucose between different groups.
 
Results: Diabetes caused learning and memory impairment in the form of increasing working and reference memory errors and use of Nepeta menthoides extract in the diabetic rats caused a significant reduction in the number of related errors. Nepeta menthoides also declined blood glucose in diabetic rats.
 
Conclusion: Nepeta menthoides consumption in diabetic rats improves diabetes-induced learning and memory impairment. This effect might be mediated at least partly by decreasing blood glucose.

کلیدواژه‌ها [English]

  • Diabetes mellitus
  • Nepeta menthoides
  • Streptozotocin
  • Learning and memory impairment
  • 8-arm radial maze

مراجع

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