Results 101 to 110 of about 11,817 (216)

Effects of a high‐sugar mixed meal on cerebrovascular haemodynamics in young, healthy versus middle‐aged adults with cardiometabolic risk factors

Experimental Physiology, EarlyView.
Abstract Consumption of a high‐sugar mixed meal (HSMM) increases both glucose and insulin and elicits mixed vascular effects, with reduced microvascular blood flow but increased conduit artery diameter and blood flow. In this study, we sought to examine: (1) whether an HSMM elicits vascular segment‐specific effects within cerebrovasculature; and (2 ...
Krista S. Reed, Molly R. Crew, Abby M. Frescoln, Spencer M. Romanowski, Rudy J. Valentine, Wesley K. Lefferts   +5 more
wiley   +1 more source

Cerebral blood flow regulation, central arterial stiffness and traumatic brain injury: Effects of aerobic exercise training

Experimental Physiology, EarlyView.
Abstract Advanced age is the strongest risk factor for Alzheimer's disease and related dementias (ADRDs). Traumatic brain injury (TBI) has also been recognized as a risk factor for ADRD, potentially contributing to an earlier onset of the disease. Thus, elucidating the mechanisms underlying brain ageing and TBI is critical for developing strategies to ...
Tsubasa Tomoto, Kan Ding, C. Munro Cullum, Rong Zhang   +3 more
wiley   +1 more source

Detektion und Graduierung intrakranieller Stenosen – eine vergleichende Analyse der transkraniellen Farbduplexsonographie, CT-Angiographie und time of flight-MR-Angiographie [PDF]

, 2018
Intrakranielle Stenosen (IS) der Hirnbasisarterien gehören weltweit zu den häufigsten Schlaganfallursachen. Das Schlaganfallrisiko steigt dabei mit dem Stenosegrad.
Hadzibegovic, Sara
core   +1 more source

On‐feet isometric bracing maintains cerebral arterial blood velocity during lower body negative pressure via preload augmentation

Experimental Physiology, EarlyView.
Abstract Orthostatic stress reduces venous return and stroke volume (SV), risking cerebral hypoperfusion despite autonomic compensation. Although lower‐limb counterpressure manoeuvres improve cerebral perfusion in upright posture, their effects on cerebral blood velocity (CBV) during lower‐body negative pressure (LBNP) and the associated mechanisms are
Jun Sugawara, Marina Fukuie, Tsubasa Tomoto, Takashi Tarumi, Ai Hirasawa, Shigeki Shibata   +5 more
wiley   +1 more source

The Findings of Transcranial Doppler Ultrasonography in Patients with Ischemic Stroke

Caspian Journal of Neurological Sciences, 2015
Background: Stroke is a multifactorial disorder, the most common cause being arterial occlusion. Transcranial Doppler Ultrasonography (TCD) is a common non-invasive method available for assessment the arterial blood flow of the brain.
Mozaffar Hosseininezhad, Seyed-Ali Roudbary, Iraj Keshavarzi, Seyed-Mohammad-Masood Hojjati, Ehsan Kazemnezhad-Leili   +4 more
doaj  

A Comparative Study of Transcranial Color-Coded Doppler (TCCD) and Transcranial Doppler (TCD) Ultrasonography Techniques in Assessing the Intracranial Cerebral Arteries Haemodynamics

Diagnostics
Cerebrovascular disease (CVD) poses a major public health and socio-economic burden worldwide due to its high morbidity and mortality rates. Accurate assessment of cerebral arteries’ haemodynamic plays a crucial role in the diagnosis and treatment ...
Simon Takadiyi Gunda, Tsam Kit Veronica Ng, Tsz-Ying Liu, Ziman Chen, Xinyang Han, Xiangyan Chen, Marco Yiu-Chung Pang, Michael Tin-Cheung Ying   +7 more
doaj   +1 more source

Acute ketone monoester ingestion lowers resting cerebral blood flow: a randomized cross‐over trial

The Journal of Physiology, EarlyView.
Abstract figure legend This double‐blind, placebo‐controlled, randomized cross‐over trial investigated the effects of ketone monoester (KME) ingestion on resting cerebral blood flow (CBF) in young adults. We demonstrate that KME supplementation lowers CBF in a dose‐dependent manner over 2‐houra post‐ingestion, whereas CBF remained unchanged following ...
Aedan J. Rourke, Claudia M.S. Yong, Geoff B. Coombs, Addriana R. Odisho, Jenna A. Nash, Jack Bone, Baraa K. Al‐Khazraji, Jeremy J. Walsh   +7 more
wiley   +1 more source

The role of acid‐base balance in cerebrovascular and ventilatory responses to CO2 during 10 h normobaric hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend During 10 h exposures to normobaric hypoxia exposure there was a selective leftward shift in ventilatory response to hyperoxic hypercapnic rebreathing, but not the cerebrovascular response. The key findings are that the resetting of the central chemoreflex to lower PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_2}}}$ during early hypoxic ...
Holly Barclay, Saptarshi Mukerji, Bengt Kayser, Jui‐Lin Fan   +3 more
wiley   +1 more source

Transcranial Doppler Ultrasonography of the Basilar Artery in Cerebral Small Vessel Disease

Journal of Education, Health and Sport
This study evaluates the diagnostic value of transcranial Doppler ultrasonography (TCD) of the basilar artery in patients with cerebral small vessel disease (CSVD).
M. Vikarenko
doaj   +1 more source

Arterial–venous differences of brain‐derived neurotrophic factor isoforms across the brain and muscle after exercise at different intensities

The Journal of Physiology, EarlyView.
Abstract figure legend Exercise‐induced increases in forearm venous plasma and serum brain‐derived neurotrophic factor (BDNF) are often assumed to be indicative of release from the brain. Sixteen healthy and physically fit adults (20–40 years old) were recruited to investigate whether exercise‐induced changes in forearm venous mature BDNF (mBDNF) and ...
Olga Tarassova, Yiwen Jiang, Helena Wallin, Mats Jensen‐Urstad, Nikola Drca, Julia Röja, Marjan Pontén, Abram Katz, Jonna Nilsson, Maria M. Ekblom, Marcus Moberg   +10 more
wiley   +1 more source