کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4329358 | 1614210 | 2008 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mechanically-induced cortical spreading depression associated regional cerebral blood flow changes are blocked by Na+ ion channel blockade
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کلمات کلیدی
CSDSpeed of propagationVDCCFHMrCBFTTXAUC - AUCcortical spreading depression - افسردگی گسترش کورتکسAura - اوراtetrodotoxin - تترو دوتوکسین analysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of varianceRegional cerebral blood flow - جریان خون منطقه ای مغزیarea under curve - منطقه تحت منحنیMigraine - میگرنFamilial hemiplegic migraine - میگرن همی پلژی خانوادگیarbitrary units - واحد دلخواهSodium Channel - کانال سدیمVoltage-dependent calcium channel - کانال کلسیم وابسته به ولتاژ
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Migraine with aura occurs in up to 20-30% of all migraineurs. The regional cerebral blood flow (rCBF) changes that occur during cortical spreading depression (CSD) are considered to be an experimental correlate of aura. CSD is synchronous with a failure in brain ion homeostasis and efflux of excitatory amino acids from nerve cells. Therefore studying the mechanisms that underlie CSD, such as ion channel manipulation, and observing rCBF changes may help our understanding of migraine aura. In this study we used mechanical stimulation to induce oligemia and hyperemia, in surgically prepared cats and rats, using laser Doppler probes to measure the cerebral blood flow and single cell cortical recording to measure the spike/neuronal burst, both generated as a consequence of CSD. We looked at the response of ion channel blockers directed at sodium, voltage-dependent calcium and ATP-activated potassium ion channels. The sodium ion channel blocker was able to inhibit rCBF changes in both the cat and rats. Voltage-dependent calcium channel blockers had little effect on the initiation or propagation of the spread, as did the ATP-activated potassium channel blocker. The data are consistent with what is known of human aura in that sodium ion channels are those predominantly involved in mechanical stimulation-induced rCBF changes and thus may represent therapeutic targets for the aura response in migraine.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Brain Research - Volume 1229, 10 September 2008, Pages 27-36
Journal: Brain Research - Volume 1229, 10 September 2008, Pages 27-36
نویسندگان
Simon Akerman, Philip R. Holland, Peter J. Goadsby,