کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4347875 1615176 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Neurons in the preBötzinger complex and VRG are located in proximity to arterioles in newborn mice
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Neurons in the preBötzinger complex and VRG are located in proximity to arterioles in newborn mice
چکیده انگلیسی
The constant cyclic respiratory activity in the brainstem requires an un-interrupted blood flow providing glucose and O2 to neurons generating respiratory rhythm. Here we used a combination of classical vascular visualization techniques, and calcium imaging, to compare the microvascular structure and localization of active respiratory neurons in the brainstem of newborn mice at the level of the preBötzinger complex (PBC) and ventral respiratory group. The brainstem is supplied with perforating arteries, which enter primarily in the midline and in a circumscribed region mid-laterally in the medulla. Presumed arterioles then pass dorso-medially with a high density immediately lateral to the midline, and mid-laterally at ∼60% of the midline-to-lateral edge distance. Calcium imaging, using Fluo-8, AM, showed that active PBC/VRG neurons are located in the same region where a high density of arterioles is found. We conclude that the striking co-localization of medullary arterioles and the PBC/VRG could imply that respiratory neurons may derive part of their glucose and oxygen consumption directly from arterioles, and that humoral factors affecting ventilation may reach respiratory neurons by precapillary transport mechanisms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 450, Issue 3, 6 February 2009, Pages 229-234
نویسندگان
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