Hypoxia inhibits baroreflex vagal bradycardia via a central action in anaesthetized rats
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منابع مشابه
Inhibition of baroreflex vagal bradycardia by nasal stimulation in rats.
Nasal stimulation provokes hypertension and bradycardia. We report here that such stimulation inhibits baroreflex vagal bradycardia (BVB). In chloralose- and urethan-anesthetized, β-adrenergic receptor-blocked rats, the aortic depressor nerves were cut and electrically stimulated to induce BVB. Nasal application of smoke, warm distilled water, or cold or hot Ringer solution suppressed BVB, but ...
متن کاملInhibition of baroreflex vagal bradycardia by activation of the rostral ventrolateral medulla in rats.
In stressful conditions, baroreflex vagal bradycardia (BVB) is often suppressed while blood pressure is increased. To address the role of the rostral ventrolateral medulla (RVL), a principal source of sympathetic tone, in inhibition of BVB, we microinjected DL-homocysteic acid (DLH, 6 nmol) into the RVL of chloralose-urethan-anesthetized, sinoaortic-denervated rats to examine the effect on BVB....
متن کاملNesfatin-1 inhibits gastric acid secretion via a central vagal mechanism in rats.
Nesfatin-1, a novel hypothalamic peptide, inhibits nocturnal feeding behavior and gastrointestinal motility in rodents. The effects of nesfatin-1 on gastrointestinal secretory function, including gastric acid production, have not been evaluated. Nesfatin-1 was injected into the fourth intracerebral ventricle (4V) of chronically cannulated rats to identify a nesfatin dose sufficient to inhibit f...
متن کاملNesfatin-1 Inhibits Gastric Acid Secretion via a Central Vagal
34 Nesfatin-1, a novel hypothalamic peptide, inhibits nocturnal feeding behavior and 35 gastrointestinal motility in rodents. The effects of nesfatin-1 on gastrointestinal secretory 36 function, including gastric acid production, have not been evaluated. Nesfatin-1 was injected 37 into the 4 intracerebral ventricle (4V) of chronically cannulated rats to identify a nesfatin dose 38 sufficient to...
متن کاملCentral antioxidant therapy inhibits parasympathetic baroreflex control in conscious rats.
Baroreceptor reflex is an important system for neural control of blood pressure. Recently, reactive oxygen species (ROS) have been shown to play an important role in neuronal activity of central areas related to blood pressure control. The aim of this study was to investigate the effects elicited by ascorbic acid (AAC) and N-acetylcysteine (NAC) injections into the 4thV on the parasympathetic c...
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ژورنال
عنوان ژورنال: Experimental Physiology
سال: 1999
ISSN: 0958-0670
DOI: 10.1111/j.1469-445x.1999.tb00071.x