Cryptococcal meningoencephalitis is one of the most common central nervous system infections affecting immunocompromised patients. However, brainstem involvement is extremely rare and may represent a diagnostic challenge to clinicians. We report a non-HIV infected, chronically immunosuppressed, patient with fatal disseminated cryptococcosis presented with subcutaneous masses at both thighs and progressive brainstem dysfunction. Magnetic resonance imaging demonstrated multiple brainstem infarcts likely derived from small vessel vasculopathy. Anti-fungal treatment led to partial neurologic improvement but the patient succumbed to a fatal sepsis from hospital-acquired pneumonia.
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http://dx.doi.org/10.1016/j.clineuro.2018.02.015 | DOI Listing |
Neuron
January 2025
Department of Genetics, Stanford University, Stanford, CA, USA; Glenn Center for the Biology of Aging, Stanford University, Stanford, CA, USA; Wu Tsai Neurosciences Institute, Stanford University, Stanford, CA, USA. Electronic address:
Brain aging leads to a decline in cognitive function and a concomitant increase in the susceptibility to neurodegenerative diseases such as Alzheimer's and Parkinson's diseases. A key question is how changes within individual cells of the brain give rise to age-related dysfunction. Developments in single-cell "omics" technologies, such as single-cell transcriptomics, have facilitated high-dimensional profiling of individual cells.
View Article and Find Full Text PDFNoise Health
January 2025
Department of Neurology, Faculty of Medicine, Ondokuz Mayis University, Samsun, Turkey.
Background: Patients with multiple sclerosis (MS) experience difficulties in understanding speech in noise despite having normal hearing.
Aim: This study aimed to determine the relationship between speech discrimination in noise (SDN) and medial olivocochlear reflex levels and to compare MS patients with a control group.
Material And Methods: Sixty participants with normal hearing, comprising 30 MS patients and 30 healthy controls, were included.
Cerebellum
January 2025
Inserm U 1127, CNRS UMR 7225, Sorbonne Université, UPMC Univ Paris 06, UMR S 1127, Institut du Cerveau, ICM, Paris, F-75013, France.
Cerebellar functional and structural connectivity are likely related to motor function after stroke. Less is known about motor recovery, which is defined as a gain of function between two time points, and about the involvement of the cerebellum. Fifteen patients who were hospitalized between 2018 and 2020 for a first cerebral ischemic event with persistent upper limb deficits were assessed by resting-state functional MRI (rsfMRI) and clinical motor score measurements at 3, 9 and 15 weeks after stroke.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Laboratory of Alzheimer's Neuroimaging and Epidemiology - LANE, IRCCS Istituto Centro San Giovanni di Dio Fatebenefratelli, Brescia, Italy.
Background: This study investigated microstructural features of the locus coeruleus to entorhinal cortex pathway (LC-EC) in relation to amyloid (A), tau (T), neurodegeneration (N) markers and cognitive impairment in memory clinic patients.
Method: 124 participants were recruited from the Geneva Memory Clinic (n=30 cognitively unimpaired - CU; n=80 MCI and n=14 dementia - CI) and underwent clinical assessment, 3T MRI scan including diffusion weighted imaging, amyloid PET, and tau PET. Diffusivity indices (fractional anisotropy - FA, mean, axial and radial diffusivities - MD, AxD, RD) were assessed in the LC-EC pathway using a probabilistic atlas.
Background: Studies suggest that structural changes in the midbrain are linked to Alzheimer's disease (AD) symptoms such as memory, sleep, and emotional disturbances. Brainstem atrophy, particularly in the locus coeruleus, has also been linked with poorer executive function. Studies showing brainstem as one of the first regions affected by AD largely employed novel imaging techniques such as neuromelanin-sensitive MRI, which is limited to research environments.
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