Effect of ellagic acid on thiol levels in different brain tissue in an animal model of Parkinson's disease
محورهای موضوعی : مجله گیاهان دارویی
مریم رفیعی راد
1
,
زینب عیدی پور
2
1 - گروه زیست شناسی، دانشکده علوم پایه، واحد ایذه، دانشگاه آزاد اسلامی، ایذه، ایران
2 - گروه زیست شناسی، دانشکده علوم پایه، واحد دامغان، دانشگاه آزاد اسلامی،دامغان، ایران
کلید واژه: Rat, thiol, Parkinson, ellagic acid,
چکیده مقاله :
Background & Aim: Parkinson's disease (PD) can be created with loss of dopaminergic substantial nigra neurons which is widely associated with oxidative stress and reduced glutathione (GSH), as the most important and abundant thiol in tissues and one of the antioxidant defense, is one of the earliest biochemical events related to Parkinson's and consumption of antioxidants has a protective effect. In the present study, effect of ellagic acid on the rate of thiol groups has been studied within the hippocampus, striatum, cortex and cerebellum tissues in Parkinson's disease. Experimental: In this study were used 40 adult male rats that were divided randomly into eight groups: control, Parkinson's, and three Parkinson groups that once daily for 14 days received the gavage from doses 10, 25, and 50 mg/kg of ellagic acid. Parkinson's disease was induced with injection of 8 µg of 6_ hydroxy dopamine (6-OHDA) nerve toxin in 2 ml of saline containing 1% ascorbic acid in the middle-anterior bundle (MFB) of the left cerebral hemisphere of rats. After 14 days all rat brain were collected for the isolation and measurement of tissue thiol. Results & Discussion: In the PD group, in the all tissues observed a significant decrease in the thiol levels than the control group and administered ellagic acid in particular, 25 and 50 mg/kg was able to induce the effect of increase in the all tissues. This increase was significant in all tissues except cerebellum than PD group. Recommended applications/industries: Ellagic acid with having the ability to increase thiol can be used for treating and preventing progression of Parkinson's disease that created by oxidative stress.
مقدمه و هدف: بیماری پارکینسون(PD) با از بین رفتن نورونهای دوپامینرژیک جسم سیاه ایجاد میگردد که بهطور گستردهای با استرس اکسیداتیو در ارتباط است و کاهش گلوتاتیون (GSH)، به عنوان فراوانترین و مهمترین تیول بافتی و یکی از عوامل دفاع آنتیاکسیدانی از اولین وقایع بیوشیمیایی مرتبط با پارکینسون میباشد و مصرف آنتیاکسیدانها اثر حفاظتی دارد. در مطالعه حاضر اثر الاژیک اسید بر میزان گروههای تیول در بافتهای هیپوکامپ، استریاتوم، قشرمغز و مخچه در بیماری پارکینسون مورد بررسی قرار گرفتهاست. روش تحقیق: در این مطالعه از 40 سر موش صحرایی نر بالغ استفادهگردید که بهطور تصادفی به گروههای 8تایی کنترل، پارکینسونی، و سه گروه پارکینسونی که روزانه یکبار به مدت 14 روز به ترتیب دوزهای mg/kg10 ،25و 50 الاژیک اسید را به روش گاواژ دریافت نمودند، تقسیم گردیدند. بیماری پارکینسون با تزریق 8 میکروگرم سم عصبی 6_هیدروکسی دوپامین (6-OHDA) در 2میکرولیتر سالین دارای 1% اسید اسکوربیک درون دسته میانی_قدامی (MFB) نیمکره چپ مغز موشها القاء شد و پس از 14 روز مغز تمامی موشها جهت جداسازی بافتها و سنجش تیول استخراج گردیدند. نتایج و بحث: در گروه پارکینسونی در تمامی بافتها کاهش معنیداری در میزان تیول نسبت به گروه کنترل مشاهده گردید و تجویز الاژیک اسید بهویژه دوز 25 و 50 mg/kg توانست در تمامی بافت ها اثر افزایشی را القاء نماید که این افزایش در تمامی بافتها بجز مخچه معنیدار بود. در نهایت الاژیک اسید با توان افزایش تیول قادر است با استرس اکسیداتیو ناشی از پارکینسون مقابله نماید. توصیه کاربردی/ صنعتی: با توجه به نتایج حاصل ازین تحقیق و خاصیت آنتی اکسیدانی الاژیک اسید میتوان از آن جهت بهبود و منع پیشروی بیماری پارکینسون بهره برد.
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