Sympathetic innervation alters growth and intrinsic heart rate of fetal rat atria maturing in oculo.
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منابع مشابه
Sympathetic innervation alters growth and intrinsic heart rate of fetal rat atria maturing in oculo.
The influence of sympathetic innervation on the growth and intrinsic rate of beating established by fetal rat heart was studied by culturing fetal atrial tissue in sympathetically innervated and denervated anterior eye chambers of adult Sprague-Dawley rats. One anterior eye chamber in each host rat was sympathetically denervated by removing the ipsilateral superior cervical ganglion. In oculo, ...
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Is baroreflex control of sympathetic activity and heart rate active in the preterm fetal sheep?
The arterial baroreflex is a fundamental reflex that buffers rapid changes in arterial blood pressure (BP) via regulation of the heart rate and sympathetic nerve activity to the vasculature. In adults a sigmoidal relationship between BP and both heart rate and sympathetic nerve activity is well documented. Its role in blood pressure control before birth is unclear. Preterm babies have a high in...
متن کاملSelective vagal denervation of the atria eliminates heart rate variability and baroreflex sensitivity while preserving ventricular innervation.
BACKGROUND The purpose of this study was to test whether radiofrequency catheter ablation (RFCA) of 3 epicardial fat pads that resulted in efferent vagal denervation of the atria and sinus and atrioventricular nodes also denervated the ventricles. METHODS AND RESULTS Vagal innervation of the ventricles was determined by measuring prolongation of ventricular effective refractory period induced...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1986
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.59.5.534