Results 51 to 60 of about 1,332 (157)

Mathematical methods for modeling the microcirculation

AIMS Biophysics, 2017
The microcirculation plays a major role in maintaining homeostasis in the body. Alterations or dysfunctions of the microcirculation can lead to several types of serious diseases. It is not surprising, then, that the microcirculation has been an object of
Julia C. Arciero, Paola Causin, Francesca Malgaroli   +2 more
doaj   +1 more source

Regulation of Blood Flow in the Cerebral Posterior Circulation by Parasympathetic Nerve Fibers: Physiological Background and Possible Clinical Implications in Patients With Vertebrobasilar Stroke

Frontiers in Neurology, 2021
Posterior circulation involves the vertebrobasilar arteries, which supply oxygen and glucose to vital human brainstem structures and other areas. This complex circulatory- perfusion system is not homogenous throughout the day; rather, its hemodynamic ...
Arturo Tamayo, Arturo Tamayo, Timo Siepmann, Timo Siepmann   +3 more
doaj   +1 more source

Homeometric Autoregulation in the Heart [PDF]

Circulation Research, 1960
The effect of increasing the activity of the ventricle on its contractility was investigated. Several beats after the ventricle increases the amount of tension it develops per unit of time, it exhibits an increased contractility as shown by the increase in work and the more rapid development of pressure from a given end-diastolic pressure or fiber ...
J. P. Gilmore, S. J. Sarnoff, J. P. Remensnyder, Jere H. Mitchell   +3 more
openaire   +3 more sources

Relationships of maternal hemodynamics in the third trimester with fetal umbilical artery doppler indices, estimated fetal weight and birth weight in women with and without congenital heart disease

International Journal of Gynecology &Obstetrics, EarlyView.
Abstract Objective To compare differences in maternal hemodynamics, measured non‐invasively by impedance cardiography and mean arterial blood pressure (MAP)—at rest and with high‐intensity exercise—between pregnant women with corrected congenital heart disease (CHD) and low‐risk (LR) pregnant controls, and to correlate these findings with umbilical ...
Francois Dos Santos, Ellen Barr, Philip J. Steer, Mark R. Johnson   +3 more
wiley   +1 more source

Early Hyperdynamic Sepsis Alters Coronary Blood Flow Regulation in Porcine Fecal Peritonitis

Frontiers in Physiology, 2021
Background: Sepsis is a common condition known to impair blood flow regulation and microcirculation, which can ultimately lead to organ dysfunction but such contribution of the coronary circulation remains to be clarified.
Céline Boudart, Céline Boudart, Fuhong Su, Lorenzo Pitisci, Arnaud Dhoine, Arnaud Dhoine, Olivier Duranteau, Pascale Jespers, Antoine Herpain, Rebecca Vanderpool, Serge Brimioulle, Jacques Creteur, Robert Naeije, Luc Van Obbergh, Laurence Dewachter   +14 more
doaj   +1 more source

Effect of Body Position on Dynamic Apparent Diffusion Coefficient Changes During the Cardiac Cycle in the Human Brain

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Dynamic changes in the apparent diffusion coefficient (ΔADC) during the cardiac cycle reflect water molecule fluctuations in the brain and intracranial conditions. While body position strongly affects intracranial conditions, the relationship between ΔADC and body position has been less explored, as conventional MRI is typically ...
Naoki Ohno, Tosiaki Miyati, Masatomo Uehara, Riho Okamoto, Mitsuhito Mase, Satoshi Kobayashi   +5 more
wiley   +1 more source

Individualized perfusion targets in hypoxic ischemic brain injury after cardiac arrest

Critical Care, 2017
Secondary injury is a major determinant of outcome in hypoxic ischemic brain injury (HIBI) after cardiac arrest and may be mitigated by optimizing cerebral oxygen delivery (CDO2).
Mypinder S. Sekhon, Donald E. Griesdale
doaj   +1 more source

Association of In Vivo Kidney Stiffness Measured by Multifrequency MR Elastography and Long‐Term Renal Function in Transplant Recipients and Living Donors

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Kidney transplant (KTx) function assessment is important in treatment planning, while conventional MRI markers lack sensitivity for KTx function. Mechanical kidney properties may serve as MRI markers for renal allograft function. Hypothesis To determine if multifrequency MR elastography (MRE) is associated with KTx function.
Stephan Rodrigo Marticorena Garcia, Jonas Oppenheimer, Tom Meyer, Frank Friedersdorff, Ingolf Sack   +4 more
wiley   +1 more source

The transformer gene controls sexual development in Drosophila suzukii

Insect Science, EarlyView.
The transformer gene plays a key role in the genetic pathway for sexual development in Drosophila suzukii Abstract The genetic network of sex determination in the model organism Drosophila melanogaster was investigated in great detail. Such knowledge not only advances our understanding of the evolution and regulation of sexual dimorphism in insects ...
Ying Yan, Jing Zhao, Jonas Schwirz, Cristina Borghesi, Conghui Liu, Bo Liu, Wanqiang Qian, Fanghao Wan, Marc F. Schetelig   +8 more
wiley   +1 more source

Venous sinus stenting improves cerebral autoregulation in a patient with venous sinus stenosis: a case report

BMC Neurology, 2020
Background Venous sinus stenosis (VSS) is a type of cerebral venous vascular disease. Cerebral autoregulation is an indicator of cerebral arterial function. The cerebral circulatory system is composed of the venous system and arterial system.
Meiyan Jia, Zhen-Ni Guo, Hang Jin, Xiuli Yan, Mingchao Shi, Xin Sun, Hongyin Ma, Shan Lv, Yi Yang   +8 more
doaj   +1 more source