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Articles 1 - 7 of 7
Full-Text Articles in Neurology
Leukoaraiosis And Sex Predict The Hyperacute Ischemic Core Volume, Nils Henninger, Eugene Lin, Diogo Haussen, Laura Lehman, Deepak Takhtani, Magdy Selim, Majaz Moonis
Leukoaraiosis And Sex Predict The Hyperacute Ischemic Core Volume, Nils Henninger, Eugene Lin, Diogo Haussen, Laura Lehman, Deepak Takhtani, Magdy Selim, Majaz Moonis
Nils Henninger
BACKGROUND AND PURPOSE: Leukoaraiosis (LA) and male sex have been associated with decreased cerebrovascular reactivity, which potentially adversely affects tissue viability in acute stroke. Therefore, we aimed to elucidate the contribution of LA-severity and sex to the extent of the hyperacute ischemic core volume after intracranial large artery occlusion. METHODS: We analyzed data from 87 patients with acute intracranial large artery occlusion who had acute multimodal computed tomography-imaging. LA-severity was assessed using the van Swieten scale on noncontrast computed tomography. Computed tomography perfusion data were analyzed using automatic calculation of the mean transit time and hyperacute cerebral blood volume defects. …
Rodent Traumatic Brain Injury As A Model For Human Traumatic Axonal Damage And Neurodegeneration, Nils Henninger
Rodent Traumatic Brain Injury As A Model For Human Traumatic Axonal Damage And Neurodegeneration, Nils Henninger
Nils Henninger
Traumatic brain injury (TBI) is inherently heterogeneous with a complex underlying pathophysiology. Over the past decades many attempts have been undertaken to develop novel and innovative ways to mimic human aspects of TBI in rodents. This presentation will provide a brief overview of translationally relevant rodent TBI models with special emphasis on mild-to-moderate injuries and associated pathology.
Severity Of Pre-Existing Cerebral Small Vessel Disease Is Associated With Outcome After Traumatic Brain Injury, Nils Heninger, Saef Izzy, Raphael Carandang, Wiley Hall, Susanne Muehlschlegel
Severity Of Pre-Existing Cerebral Small Vessel Disease Is Associated With Outcome After Traumatic Brain Injury, Nils Heninger, Saef Izzy, Raphael Carandang, Wiley Hall, Susanne Muehlschlegel
Nils Henninger
Background and purpose: It is now well accepted that traumatic white matter injury constitutes a critical determinant of post-traumatic functional impairment. However, the contribution of pre-existing white matter rarefaction on outcome following traumatic brain injury (TBI) is unknown. Hence, we sought to determine whether the burden of pre-existing cerebral small vessel disease related white matter rarefaction (leukoaraiosis) is independently associated with outcome after TBI. Methods: We retrospectively analyzed consecutive, prospectively enrolled patients of ≥50 years (n=136) that were admitted to a single neurological-trauma intensive care unit. Supratentorial white matter hypoattenuation on head CT was graded on a 5-point scale (range …
Traumatic Brain Injury: Translation From Animal Models And Genetics To Improving Outcomes, Susanne Muehlschlegel, Nils Henninger, Raphael Carandang, Constance Moore
Traumatic Brain Injury: Translation From Animal Models And Genetics To Improving Outcomes, Susanne Muehlschlegel, Nils Henninger, Raphael Carandang, Constance Moore
Nils Henninger
This presentation offers background information on traumatic brain injury (TBI), a public health problem which affects approximately 1.7 million Americans each year. The presentation is part of a mini-symposium highlighting the interdisciplinary and translational nature of TBI research at the University of Massachusetts Medical School.
Long-Term Changes Of Functional Mri-Based Brain Function, Behavioral Status, And Histopathology After Transient Focal Cerebral Ischemia In Rats, Kenneth Sicard, Nils Henninger, Marc Fisher, Timothy Duong, Craig Ferris
Long-Term Changes Of Functional Mri-Based Brain Function, Behavioral Status, And Histopathology After Transient Focal Cerebral Ischemia In Rats, Kenneth Sicard, Nils Henninger, Marc Fisher, Timothy Duong, Craig Ferris
Nils Henninger
BACKGROUND AND PURPOSE: The relation between recovery of brain function and neurological status after clinical and experimental cerebral ischemia is incompletely characterized. We assessed the evolution of ischemic injury, behavioral status, and brain activity at acute to chronic periods after transient middle cerebral artery occlusion (tMCAO) in rats. METHODS: Male Sprague-Dawley rats were subjected to 20-minute tMCAO (n=10) or sham operation (n=10). Sensorimotor behavioral testing and multimodal (diffusion, perfusion, T2, and functional) MRI, as well as postmortem hematoxylin-eosin staining, were performed before and up to 21 days after tMCAO. MRI and histological parameters were evaluated in 5 regions of interest …
Stimulating Circle Of Willis Nerve Fibers Preserves The Diffusion-Perfusion Mismatch In Experimental Stroke, Nils Henninger, Marc Fisher
Stimulating Circle Of Willis Nerve Fibers Preserves The Diffusion-Perfusion Mismatch In Experimental Stroke, Nils Henninger, Marc Fisher
Nils Henninger
BACKGROUND AND PURPOSE: Stimulation of the nerves traversing the ethmoidal foramen (including postsynaptic, parasympathetic projections from the sphenopalatine ganglion [SPG], henceforth referred to as "SPG-stimulation") has been shown to elevate cerebral blood flow (CBF) and to be neuroprotective after permanent, middle cerebral artery occlusion (pMCAO). METHODS: Employing diffusion (DWI)- and perfusion (PWI) weighted MRI, the effect of SPG-stimulation (started at 60 minutes post-MCAO) on the spatiotemporal evolution of ischemia during and after pMCAO was investigated. In an additional experiment, regional CBF changes were investigated in the nonischemic brain. RESULTS: In the nonischemic brain, SPG stimulation significantly elevated CBF predominantly within …
Leukoaraiosis Predicts Poor 90-Day Outcome After Acute Large Cerebral Artery Occlusion, Nils Henninger, Eugene Lin, Stephen Baker, Ajay Wakhloo, Deepak Takhtani, Majaz Moonis
Leukoaraiosis Predicts Poor 90-Day Outcome After Acute Large Cerebral Artery Occlusion, Nils Henninger, Eugene Lin, Stephen Baker, Ajay Wakhloo, Deepak Takhtani, Majaz Moonis
Nils Henninger
BACKGROUND: To date limited information regarding outcome-modifying factors in patients with acute intracranial large artery occlusion (ILAO) in the anterior circulation is available. Leukoaraiosis (LA) is a common finding among patients with ischemic stroke and has been associated with poor post-stroke outcomes but its association with ILAO remains poorly characterized. This study sought to clarify the contribution of baseline LA and other common risk factors to 90-day outcome (modified Rankin Scale, mRS) after stroke due to acute anterior circulation ILAO. METHODS: We retrospectively analyzed 1,153 consecutive patients with imaging-confirmed ischemic stroke during a 4-year period (2007-2010) at a single academic …