European journal of neurology : the official journal of the European Federation of Neurological Societies
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Low vitamin D levels, measured by serum 25-hydroxyvitamin D [25(OH)D], are associated with increased stroke risk. Less is known about whether this association differs by race or D binding protein (DBP) single nucleotide polymorphism (SNP) status. Our objective was to characterize the associations of and interactions between 25(OH)D levels and DBP SNPs with incident stroke. It was hypothesized that associations of low 25(OH)D with stroke risk would be stronger amongst persons with genotypes associated with higher DBP levels. ⋯ Low 25(OH)D is a risk factor for stroke. Persons with low 25(OH)D who are genetically predisposed to high DBP (rs7041 G, rs4588 A alleles), who therefore have lower predicted bioavailable 25(OH)D, may be at greater risk for stroke, although our results were not conclusive and should be interpreted as hypothesis generating.
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Cerebrospinal fluid (CSF) neurofilament light protein (NFL) is a promising biomarker of axonal injury and neurodegeneration. Here CSF lymphocyte subpopulations and antibodies, potential players of neurodegeneration, are examined in relation to CSF NFL shedding in MS. ⋯ High CSF NFL levels are associated with elevated CSF lymphocyte cell counts and intrathecal synthesis of IgM against lipids. These findings support a role for OCMB in the axonal damage of MS offering a rationale for the association of these antibodies with disability and brain atrophy progression in MS.
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Observational Study
Intracranial pressure and cerebral perfusion pressure during apnoea testing for the diagnosis of brain death - an observational study.
Some authors have suggested a rise of intracranial pressure (ICP) during apnoea testing and the possibility of harm to patients. Data, however, have yet to be obtained. ⋯ Mean ICP even before brain death determination is increased excessively. Changes of ICP during apnoea show a clear correlation to the changes of MAP. Furthermore, CPP during the condition of brain death may not equal zero but may be positive thereby indicating some minor net influx of blood into the brain in some patients.
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Migraine and metabolic syndrome have been reported to coexist to a marked degree, especially in women migraine patients, but the relationship between these two conditions is still unclear. This study was performed to evaluate the association of headache characteristics and its comorbidities with metabolic syndrome (MetS) and its components in female migraine patients. ⋯ Our study may suggest that chronic migraine is associated with MetS, especially when it is comorbid with analgesic overuse. MOH may be the risk factor for MetS in female migraine patients and associated with abdominal obesity and hypertension.