Results 111 to 120 of about 1,332 (157)

Autoregulation of Blood Flow

Science, 1963
The first international symposium on radiosensitizers and radioprotective drugs [ Science 140, 207 (12 Apr. 1963)] is scheduled for 23-24 May 1964.
Paul C. Johnson, William H. Waugh, Lerner B. Hinshaw   +2 more
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Monitoring of Cerebral Autoregulation

Neurocritical Care, 2014
Pressure autoregulation is an important hemodynamic mechanism that protects the brain against inappropriate fluctuations in cerebral blood flow in the face of changing cerebral perfusion pressure (CPP). Static autoregulation represents how far cerebrovascular resistance changes when CPP varies, and dynamic autoregulation represents how fast these ...
Czosnyka M., Miller C., Le Roux P., Menon D. K., Vespa P., Citerio G., Bader M. K., Brophy G. M., Diringer M. N., Stocchetti N., Videtta W., Armonda R., Badjatia N., Boesel J., Chesnut R., Chou S., Claassen J., De Georgia M., Figaji A., Fugate J., Helbok R., Horowitz D., Hutchinson P., Kumar M., McNett M., Naidech A., Oddo M., Olson D., O'Phelan K., Provencio J., Puppo C., Riker R., Robertson C., Schmidt J. M., Taccone F.   +34 more
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Autoregulation of tubulin synthesis

BioEssays, 1986
AbstractIn many mammalian cell types, increases in the level of nonpolymerized tubulin cause an inhibition in tubulin synthesis which is accompanied by a decrease in tubulin mRNA levels. To see whether inhibition is caused by nuclear or cytoplasmic events, two groups have recently examined the ability of enucleated cells to autoregulate tubulin ...
Marc W. Kirschner, Joan M. Caron
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Autoregulation in the choroid

Acta Ophthalmologica, 2009
Abstract Purpose To compare subfoveal choroidal blood flow (ChBF) in sitting and supine position in normal volunteers. Methods ChBF was measured with laser Doppler flowmetry in 22 healthy volunteers (mean age ± SD: 24 ± 5 years). Six independent measurements of choroidal blood flow were obtained in one randomly selected eye of each subject ...
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Autoregulation in the Neuro ICU

Current Treatment Options in Neurology, 2018
The purpose of this review is to briefly describe the concept of cerebral autoregulation, to detail several bedside techniques for measuring and assessing autoregulation, and to outline the impact of impaired autoregulation on clinical and functional outcomes in acute brain injury.
Anson Wang, Santiago Ortega-Gutierrez, Nils H Petersen   +2 more
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Shifting concepts of autoregulation: Commentary to ‘Static autoregulation in humans'

Journal of Cerebral Blood Flow & Metabolism
Advances in imaging techniques have transformed our understanding of cerebral autoregulation. Older imaging techniques provided measurements of cerebral blood flow (CBF) that reflected the average CBF over a window of 10–20 minutes. A key finding, dating back to 1959, was that CBF remained more or less stable over a remarkably wide range of changes in
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Cerebral Autoregulation and Syncope

Progress in Cardiovascular Diseases, 2007
Whatever the pathogenesis of syncope is, the ultimate common cause leading to loss of consciousness is insufficient cerebral perfusion with a critical reduction of blood flow to the reticular activating system. Brain circulation has an autoregulation system that keeps cerebral blood flow constant over a wide range of systemic blood pressures. Normally,
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RENIN AND RENAL AUTOREGULATION

The Lancet, 1968
Abstract A renin/renal-autoregulation hypothesis is proposed and supported by the evidence gained by some of the foremost workers in the field. I depends on an increased sodium concentration in the lumen of the early distal tubule activating a sodium-dependent carrier to transport renin from the granules of the juxtaglomerular apparatus into the ...
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Cerebral autoregulation and ageing

Journal of Clinical Neuroscience, 2005
Little is known about the effects of ageing on cerebral autoregulation (CA). To examine the relationship between age and CA in adults, we conducted a prospective study using a non-invasive protocol without external stimuli. We studied 32 subjects, aged 23-68 years. They were assigned to a young group (28+/-5 years) and an old group (54+/-8 years).
Yam, A T, Lang, E W, Lagopoulos, Jim, Yip, K, Griffith, J, Mudaliar, Y, Dorsch, N W   +6 more
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Cerebral autoregulation

Acta Neuropsychiatrica, 2008
No abstract available.
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