کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9032211 | 1131738 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dopamine-containing Neurons are Silenced by Energy Deprivation: A Defensive Response or Beginning of Cell Death?
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
بهداشت، سم شناسی و جهش زایی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Dopamine-containing Neurons are Silenced by Energy Deprivation: A Defensive Response or Beginning of Cell Death? Dopamine-containing Neurons are Silenced by Energy Deprivation: A Defensive Response or Beginning of Cell Death?](/preview/png/9032211.png)
چکیده انگلیسی
Metabolic stress associated to mitochondrial dysfunction has been put forward as an important factor causing degeneration of mesencephalic dopamine-containing neurons in Parkinson's disease (PD). Here we overview how these neurons react to acute hypoxia or hypoglycemia, that are conditions of energy deprivation causing a reduced production of ATP by mitochondria. These neurons, which show a tonic firing discharge under normal condition, undergo into membrane hyperpolarization during hypoxia or hypoglycemia that silence their spontaneous activity. We outline the cellular mechanisms causing membrane hyperpolarization and the accompanied disturbances of intracellular calcium and sodium homeostasis. A better understanding of the changes occurring during transient energy deprivation might contribute to understand the physiopathology of these neurons that derives from mitochondrial dysfunction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroToxicology - Volume 26, Issue 5, October 2005, Pages 857-868
Journal: NeuroToxicology - Volume 26, Issue 5, October 2005, Pages 857-868
نویسندگان
Ezia Guatteo, Silvia Marinelli, Raffaella Geracitano, Alessandro Tozzi, Mauro Federici, Giorgio Bernardi, Nicola B. Mercuri,