کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4350940 1615195 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Roles of the vestibular system in controlling arterial pressure in conscious rats during a short period of microgravity
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
Roles of the vestibular system in controlling arterial pressure in conscious rats during a short period of microgravity
چکیده انگلیسی

In order to evaluate the roles of the vestibular system in controlling arterial pressure (AP) during exposure to a short period of microgravity (μG), the AP was measured in conscious free-moving rats having intact vestibular systems and those having vestibular lesions (FM-Intact and FM-VL groups, respectively). During free drop-induced μG, the AP increased in the FM-Intact group; it was 38 ± 4 mmHg more than the AP observed during 1 G. However, the increase in AP was significantly lower in the FM-VL group (20 ± 2 mmHg). Further, to examine the sudden effect of a body floating in the midair in response to the AP during exposure to μG a body stabilizer was placed on the back of rats having intact vestibular systems and those having vestibular lesions (STAB-Intact and STAB-VL groups, respectively). The increase in the AP was significantly depressed in the STAB-Intact group; when compared with that in the FM-Intact group, but the increase was still significant (27 ± 2 mmHg). On the other hand, the increase in the AP was completely eliminated in the STAB-VL group (7 ± 5 mmHg). These results indicate that the AP increases during exposure to μG in conscious rats, and the vestibular system and body stability are significantly involved in this response.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 397, Issues 1–2, 10–17 April 2006, Pages 40–43
نویسندگان
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