Results 31 to 40 of about 1,332 (157)

Emergence of Mechano-Sensitive Contraction Autoregulation in Cardiomyocytes

open access: yesLife, 2021
The heart has two intrinsic mechanisms to enhance contractile strength that compensate for increased mechanical load to help maintain cardiac output. When vascular resistance increases the ventricular chamber initially expands causing an immediate length-
Leighton Izu   +8 more
doaj   +1 more source

Vagolytic atropine attenuates cerebral vasodilation response during acute orthostatic hypotension [PDF]

open access: yesKorean Journal of Anesthesiology, 2015
BackgroundAtropine is an anticholinergic drug which is commonly used in clinical practice. The effect of parasympathetic block with atropine on dynamic cerebrovascular regulation remains unclear.
Woo-Jong Choi   +5 more
doaj   +1 more source

Case report: Continuous spinal cord physiologic monitoring following traumatic spinal cord injury—A report from the Winnipeg Intraspinal Pressure Study (WISP)

open access: yesFrontiers in Neurology, 2023
IntroductionAcute traumatic spinal cord injury is routinely managed by surgical decompression and instrumentation of the spine. Guidelines also suggest elevating mean arterial pressure to 85 mmHg to mitigate secondary injury.
Perry Dhaliwal   +8 more
doaj   +1 more source

Impact of impaired cerebral blood flow autoregulation on electroencephalogram signals in adults undergoing propofol anaesthesia: a pilot study

open access: yesBJA Open, 2022
Background: Cerebral autoregulation actively maintains cerebral blood flow over a range of MAPs. During general anaesthesia, this mechanism may not compensate for reductions in MAP leading to brain hypoperfusion.
Elsa Manquat   +10 more
doaj  

Identification of Three Type II Toxin-Antitoxin Systems in Streptococcus suis Serotype 2

open access: yesToxins, 2018
Type II toxin-antitoxin (TA) systems are highly prevalent in bacterial genomes and have been extensively studied. These modules involve in the formation of persistence cells, the biofilm formation, and stress resistance, which might play key roles in ...
Jiali Xu   +9 more
doaj   +1 more source

Cultural-Historical Activity Theory in the Framework of the “Functional Paradigm”

open access: yesКультурно-историческая психология, 2020
The aim of the paper is to highlight the peculiarity of the present state of the Cultural-historical activity theory (CHAT) in psychology, as compared to previous periods of its development in the general context of theory development in psychology.
Leontiev D.A.
doaj   +1 more source

Differentiating Dynamic Cerebral Autoregulation Across Vascular Territories

open access: yesFrontiers in Neurology, 2021
Objective: Transcranial Doppler is commonly used to calculate cerebral autoregulation, but measurements are typically restricted to a single cerebral artery.
Navpreet Reehal   +6 more
doaj   +1 more source

Iron-Dependent Transcription of the Regulatory Gene ros of Agrobacterium radiobacter

open access: yesMolecular Plant-Microbe Interactions, 1997
Transcription of the regulatory gene ros of Agrobacterium radiobacter requires growth in the presence of Fe although this regulation was not mediated by ros itself.
H. Hussain, A. W. B. Johnston
doaj   +1 more source

Noninvasive Optical Measurements of Dynamic Cerebral Autoregulation by Inducing Oscillatory Cerebral Hemodynamics

open access: yesFrontiers in Neurology, 2021
Objective: Cerebral autoregulation limits the variability of cerebral blood flow (CBF) in the presence of systemic arterial blood pressure (ABP) changes.
Thao Pham   +8 more
doaj   +1 more source

Autoregulation of Hepatic Circulation

open access: yesJapanese Heart Journal, 1966
(1) The pressure-flow relations in both the hepatic artery and the portal vein system were investigated in a total of 13 dog livers, perfused with the homologous blood by a pump oxygenator. In addition, the interaction between the hepatic artery and the portal vein system was also studied.
Ichiro Murai   +4 more
openaire   +4 more sources

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