Autoregulation of hind-limb blood flow in conscious dogs.
نویسندگان
چکیده
منابع مشابه
Tonic and phasic influences of nitric oxide on renal blood flow autoregulation in conscious dogs.
The aim of this study was to investigate the influence of the mean level and phasic modulation of NO on the dynamic autoregulation of renal blood flow (RBF). Transfer functions were calculated from spontaneous fluctuations of RBF and arterial pressure (AP) in conscious resting dogs for 2 h under control conditions, after NO synthase (NOS) inhibition [ N G-nitro-l-arginine methyl ester hydrochlo...
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Autoregulation of renal blood flow (RBF) occurs via myogenic and tubuloglomerular feedback (TGF) mechanisms that are engaged by pressure changes within preglomerular arteries and by tubular flow and content, respectively. Our understanding of autoregulatory function in the kidney largely stems from experiments in anesthetized animals where renal perfusion pressure is precisely controlled. Howev...
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Background Although epicardial coronary arteries dilate in response to changes in flow, the mechanisms responsible for this and the mechanical stimuli that are sensed by the endothelium are not completely defined. We performed the present study to determine the importance of nitric oxide in eliciting epicardial dilation to sustained changes in mean flow and pulse frequency in the coronary circu...
متن کاملEthanol-induced alterations in pancreatic blood flow in conscious dogs.
Because ethanol abusers are susceptible to pancreatitis in animal models, and interruption of the pancreatic circulatory supply may also cause pancreatitis, we studied the effect of ethanol infusion on pancreatic blood flow. We administered ethanol 0.5 g/kg and 1.5 g/kg iv, to 35 conscious dogs (ethanol blood levels, 117 ± 10 (SD) and 297 ± 67 mg/100 ml, respectively). Measurements were made of...
متن کاملAortic blood flow subtraction: an alternative method for measuring total renal blood flow in conscious dogs.
We have measured total renal blood flow (TRBF) as the difference between signals from ultrasound flow probes implanted around the aorta above and below the renal arteries. The repeatability of the method was investigated by repeated, continuous infusions of angiotensin II and endothelin-1 seven times over 8 wk in the same dog. Angiotensin II decreased TRBF (350 +/- 16 to 299 +/- 15 ml/min), an ...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 1985
ISSN: 0022-3751
DOI: 10.1113/jphysiol.1985.sp015865