کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9429036 | 1615204 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Degeneration of dopaminergic neurons in the substantia nigra of zitter mutant rat and protection by chronic intake of Vitamin E
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
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چکیده انگلیسی
Dopaminergic cell death in the ventral and dorsal tiers of substantia nigra pars copmacta (SNc) and their prevention by anti-oxidant diet was immunohistochemically studied in the zitter mutant rats, which are characterized by abnormal metabolism of superoxide. Similar to previous reports, the number of SNc neurons in Nissl-stained section decreased with age. Tyrosine hydroxylase (TH) immunohistochemistry demonstrated that the dopaminergic neurons in the ventral tier of SNc degenerated early, whereas the dorsal tier gradually degenerated with age. Thus, the ventral tier dopaminergic neurons are affected first, but the dorsal tier neurons do become impact by the zi/zi mutation. Following 9-month period after weaning, zitter rats supplemented with 500 mg d,l-α-tocophenol (VE(+))/kg diet exhibited a significant increased of surviving TH-immunoreactive neurons in both the tiers of SNc as compared with the zi/zi rats with control and VE(â) diets. These results suggest that VE supplement may slow the dopaminergic cell loss in zitter mutant rat, and further support that degeneration of the dopaminergic neurons in this mutant rat is caused by oxidant stress. Thus, the zitter rat may represent a good model for studying the dopaminergic cell death by superoxide species.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 380, Issue 3, 3 June 2005, Pages 252-256
Journal: Neuroscience Letters - Volume 380, Issue 3, 3 June 2005, Pages 252-256
نویسندگان
Shuichi Ueda, Shin-ichi Sakakibara, Kazuhiko Nakadate, Takahiro Noda, Motoo Shinoda, Jeffrey N. Joyce,