Results 101 to 110 of about 255,609 (202)

Increasing paced heart rate reduces cerebral pulsatility

Experimental Physiology, EarlyView.
Abstract Cerebral pulsatility is a key index of cerebral haemodynamics, a central determinant of intravascular shear stress within intracranial vessels, and is associated with cerebral small vessel disease. It increases with a spontaneously falling heart rate, but the effect of altering heart rates on cerebral haemodynamics is unknown.
A. J. S. Webb, J. Thomas, O. Llwyd, N. Herring   +3 more
wiley   +1 more source

Detection of Cerebral Vasculopathy by Transcranial Doppler in Children With Neurofibromatosis Type 1

, 2016
Neurofibromatosis type 1 is characterized by nerve sheath neurofibromas associated with a number of additional clinical features, including cerebrovascular disease.
Paschoal, Fernando Mendes, Jr., Sagica Fernandes Paschoal, Joelma Karin [UNIFESP], Masruha, Marcelo Rodrigues [UNIFESP], Pinho, Ricardo Silva [UNIFESP], de Lima, Fernanda Teresa [UNIFESP], Pereira Vilanova, Luiz Celso [UNIFESP], Bor-Seng-Shu, Edson   +6 more
core   +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

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

Stimulated Acoustic Emission Detected by Transcranial Color Doppler Ultrasound

, 2000
Background and Purpose —Experimental and clinical data suggest that insonation of echo-contrast agents with high acoustical power produces disintegration of microbubbles, resulting in a pseudo-Doppler phenomenon called stimulated
Thomas Schlosser, Christoph Pohl, Klaus Tiemann, Harald Becher   +3 more
core   +1 more source

Ventilatory and cerebrovascular responses to exercise in lowlander children acclimatizing to high‐altitude

The Journal of Physiology, EarlyView.
Abstract figure legend To investigate age‐related differences in ventilatory and cerebrovascular responses to exercise at high‐altitude, adults (n = 10, 23–44 years) and children (n = 8, 7–14 years) completed progressive cycling exercise tests at sea‐level and following 6 days of acclimatization at 3800 m.
J. L. Koep, M. G. Rieger, K. J. Smith, G. R. DuManoir, C. M. Tallon, D. R. Perkins, S. Piombo, M. Stembridge, D. M. Cooper, S. Radom‐Aizik, P. N. Ainslie, A. M. McManus   +11 more
wiley   +1 more source

Manual of Transcranial Doppler Ultrasonography

Korean Journal of Clinical Laboratory Science
Transcranial Doppler (TCD) ultrasound is a crucial non-invasive tool for assessing cerebral blood flow and is widely used to diagnose and monitor cerebrovascular diseases.
Ho Tae JEONG, Soo Na JEON, Sol HAN
doaj   +1 more source

Scaling temporal resolution from mice to humans: Challenges and innovations in preclinical imaging of translational models

The Journal of Physiology, EarlyView.
Abstract figure legend Temporal scaling physiology differs significantly between mice and humans. Mice have higher metabolism, heart and respiratory rate, as well as faster blood flow rates, brain activity and physiological dynamics over time. These differences influence the temporal resolution needed in preclinical imaging of mouse models to ...
Sara Gargiulo, Matteo Gramanzini
wiley   +1 more source

Acute Neurological Events in Children With Hemoglobin SC Disease: A Multicenter Retrospective Study

Pediatric Blood &Cancer, Volume 73, Issue 11, November 2026.
ABSTRACT Introduction Neurological manifestations in children with hemoglobin SC (HbSC) disease remain insufficiently characterized, particularly regarding acute events. The aim of this study was to describe the spectrum and frequency of acute neurological events in a multicenter cohort of children with HbSC disease.
Célia Paulmin, Bérengère Koehl, Audrey Maudoux, Hanine Mansour, Marie‐Hélène Odievre, Nathalie Garrec, Emilie Georget, Cécile Arnaud, Slimane Allali, Lydia Doumdo, Marie Belloy, Corinne Guitton   +11 more
wiley   +1 more source

A comparison of transcranial Doppler and cerebral blood flow studies to assess cerebral vasoreactivity.

, 1992
The aim of this study was to determine the ability of transcranial Doppler ultrasonography when used to assess cerebral vasoreactivity. The results of this method were compared with regional cerebral blood flow measurements.
K F Lindegaard, H Nornes, D Russell, K Rootwelt, W Sorteberg, A Dahl, R Nyberg-Hansen   +6 more
core   +1 more source