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Physiology and Pharmacology، جلد ۲۰، شماره ۳، صفحات ۱۵۷-۱۷۱
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عنوان انگلیسی The demyelination and altered motor performance following electrolytic lesion in the ventrolateral white matter of spinal cord in male rats: benefit of post-injury administration of estradiol
چکیده انگلیسی مقاله Introduction: Spinal cord injuries are accompanied with significant demyelination of axons and subsequent locomotor dysfunction. To identify the extent of damage following electrolytic lesion of ventrolateral white matter, essential area for initiation of locomotor activity, we assessed demyelination as well as alteration in motor performance. Moreover, the protective effect of estradiol as a candidate treatment for preservation of myelin and locomotor activity after injury was examined due to its anti-apoptotic and anti-inflammatory activities. Methods: A unilateral electrolytic lesion positioned in the right ventrolateral funiculus (VLF) was applied following laminectomy at T8-T9. In the estradiol-treated injury group, animals received a pharmacological single dose of estradiol valerate (4 mg/kg) at 30min post injury. Locomotor function was assessed using rotarod and open field tasks during 4 weeks after injury. Results: Obtained results showed significant demyelination at the site of injury and caudal areas following lesion as well as altered motor performance. Post-spinal cord injury administration of estradiol enhanced white matter maintenance at the site of lesion, restored the level of myelin basic protein (MBP), decreased TUNEL positive cells and improved functional recovery. Conclusion: Taken together, these results indicate that demyelination after lesion in VLF may be a contributing factor to limited motor performance, and suggest that pharmacological doses of estradiol may have an early protective effect through sparing of white matter.
کلیدواژه‌های انگلیسی مقاله Spinal cord injury, Estradiol, Demyelination
نویسندگان مقاله مینا افهمی | mina afhami
neuroscience research center, shahid beheshti university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

فاطمه عباس زاده | fatemeh abbaszadeh
neuroscience research center, shahid beheshti university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

الهام سقایی | elham saghaei
department of physiology and pharmacology, faculty of medicine, shahrekord university of medical sciences, shahrekord, iran


کبری ناصری | kobra naseri
neuroscience research center, shahid beheshti university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

محمد جوان | mohammad javan
department of physiology, faculty of medical sciences, tarbiat modares university, tehran, iran

سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

معصومه جرجانی | masoumeh jorjani
neuroscience research center shahid beheshti university of medical sciences , daneshjoo blvd, evin ave

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

نشانی اینترنتی http://www.phypha.ir/ppj/browse.php?a_code=A-10-924-1&slc_lang=en&sid=en
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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده Neurodegeneretive diseases
نوع مقاله منتشر شده Original Research
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