Results 111 to 120 of about 259,881 (379)

Pericyte-mediated regulation of capillary diameter: a component of neurovascular coupling in health and disease [PDF]

open access: yes, 2010
Because regional blood flow increases in association with the increased metabolic demand generated by localised increases in neural activity, functional imaging researchers often assume that changes in blood flow are an accurate read-out of changes in ...
Attwell, D., Hall, C.N., Hamilton, N.B.
core   +3 more sources

Optimal cerebral perfusion pressure in patients with intracerebral hemorrhage: an observational case series

open access: yesCritical Care, 2014
IntroductionCurrent guidelines for spontaneous intracerebral hemorrhage (ICH) recommend maintaining cerebral perfusion pressure (CPP) between 50 and 70 mmHg, depending on the state of autoregulation.
J. Diedler   +3 more
semanticscholar   +1 more source

Astrocytes monitor cerebral perfusion and control systemic circulation to maintain brain blood flow

open access: yesNature Communications, 2020
Astrocytes provide neurons with essential metabolic and structural support, modulate neuronal circuit activity and may also function as versatile surveyors of brain milieu, tuned to sense conditions of potential metabolic insufficiency. Here we show that
N. Marina   +13 more
semanticscholar   +1 more source

Uric Acid Functions as an Endogenous Modulator of Microglial Function and Amyloid Clearance in Alzheimer's Disease

open access: yesAdvanced Science, EarlyView.
Higher serum UA levels are associated with reduced AD risk in epidemiological studies. UA enhances microglial phagocytic capacity primarily by restoring CD36 and TREM2 receptor recycling that is impaired by Aβ exposure. Therapeutically, UA supplementation improves cognitive function and reduces neuropathology in AD mouse model by enhancing microglial ...
De Xie   +18 more
wiley   +1 more source

Intracranial Hemorrhage Due to Secondary Hypertension from Intracranial Large Vessel Occlusion [PDF]

open access: yes, 2020
Simultaneous hemorrhagic and ischemic strokes have been previously reported in the literature. Typically, these occur in patients secondary to dialysis, cerebral amyloid angiopathy, or thrombotic thrombocytopenic purpura.1,2,3 However, this is the unique
Khan, Asif A.   +3 more
core  

EFFECT OF ETOMIDATE ON INTRACRANIAL PRESSURE AND CEREBRAL PERFUSION PRESSURE

open access: yesBritish Journal of Anaesthesia, 1979
Ten patients with intracranial lesions, anaesthetized with thiopentone and nitrous oxide (70%) in oxygen (30%) received etomidate 0.2 mg kg-1 i.v. Ventilation was controlled in each patient. Intracranial pressure (i.c.p.) and mean arterial pressure (m.a.p.) were recorded. I.c.p.
E, Moss   +3 more
openaire   +2 more sources

T1WI‐SWI Dual Modal Magnetic Resonance Nanoprobes for Accurate Diagnosis of Early Stage Alzheimer's Disease

open access: yesAdvanced Science, EarlyView.
We developed a smart MRI nanoprobe targeting BACE1 and Aβ plaques. It crosses the blood‐brain barrier. Upon encountering BACE1, the probe is cleaved, enabling T1WI imaging detection. Subsequent reaction with ONOO− induces probe aggregation, enhancing magnetic susceptibility for sensitive SWI imaging of Aβ plaques.
Minghua Li   +13 more
wiley   +1 more source

A Minimally Invasive Framework Reveals Region‐Specific Cerebrovascular Remodeling in Aging Using Intravital Functional Ultrasound Imaging and Ultrasound Localization Microscopy (fUS‐ULM)

open access: yesAdvanced Science, EarlyView.
A high‐resolution intravital imaging platform combining functional ultrasound and localization microscopy enables longitudinal, minimally invasive assessment of cerebrovascular function in aging studies. The present investigation reveals aging‐related reductions in neurovascular coupling, arteriole‐to‐venule ratio and vascular density, introducing a ...
Sharon Negri   +16 more
wiley   +1 more source

Characterization of the microvascular cerebral blood flow response to obstructive apneic events during night sleep [PDF]

open access: yes, 2018
Peer ReviewedPostprint (author's final ...
Blanco, Igor   +4 more
core   +2 more sources

Nanogel Integrated Zwitterionic Injectable Hydrogel with Sequential Drug‐Releasing Capability for the Programmable Repair of Spinal Cord Injury

open access: yesAdvanced Science, EarlyView.
A novel drug‐loaded D/P‐g‐PSB nanogel‐incorporated hydrogel by the electrostatic attraction‐driven self‐assembling process. Sequential drug releasing property (melatonin is released first by physical diffusion, and then ibuprofen is released as the charge shielding effect and hydrogel degradation). This ion‐sensitive hydrogel platform with sequentially
Zhijian Wei   +13 more
wiley   +1 more source

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