Brendon P. Boot

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Numerous kindreds with familial frontotemporal dementia and/or amyotrophic lateral sclerosis have been linked to chromosome 9, and an expansion of the GGGGCC hexanucleotide repeat in the non-coding region of chromosome 9 open reading frame 72 has recently been identified as the pathogenic mechanism. We describe the key characteristics in the probands and(More)
OBJECTIVE Rapid eye movement sleep behavior disorder (RBD) is associated with neurodegenerative disease and particularly with the synucleinopathies. Convenience samples involving subjects with idiopathic RBD have suggested an increased risk of incident mild cognitive impairment (MCI), dementia (usually dementia with Lewy bodies), and Parkinson disease (PD).(More)
OBJECTIVE To determine whether adding REM sleep behavior disorder (RBD) to the dementia with Lewy bodies (DLB) diagnostic criteria improves classification accuracy of autopsy-confirmed DLB. METHODS We followed 234 consecutive patients with dementia until autopsy with a mean of 4 annual visits. Clinical diagnoses included DLB, Alzheimer disease (AD),(More)
Low levels of serotonin may reduce the density of the serotonin transporter (SERT) by either increasing trafficking or reducing synthesis; a "neuroadaptive response". To determine whether 3,4-methylenedioxymethamphetamine (MDMA)-induced reductions in SERT density could be related to such a mechanism, p-chlorophenylalanine or MDMA was administered to rats,(More)
OBJECTIVE To determine the risk factors associated with dementia with Lewy bodies (DLB). METHODS We identified 147 subjects with DLB and sampled 2 sex- and age-matched cognitively normal control subjects for each case. We also identified an unmatched comparison group of 236 subjects with Alzheimer disease (AD). We evaluated 19 candidate risk factors in(More)
STUDY OBJECTIVES Sleep deprivation and daytime somnolence impair numerous aspects of physical, cognitive, and memory performance. However, most studies examining the effect of somnolence on brain function focus on acute sleep restriction in young adults. We examine the relationship between chronic daytime somnolence and connectivity in six brain networks in(More)
OBJECTIVE To report the phenotypic characterization of monozygotic twins with mutations encoding progranulin (PGRN). METHODS We studied a twin pair with an exon 4 gene deletion in the PGRN gene. Both twins had clinical and neuropsychological examinations as well as structural MRI and fluorodeoxyglucose PET (FDG-PET) scans. PGRN gene sequencing was(More)
OBJECTIVE To report the clinical, electroencephalographic, and neuroradiologic findings in a kindred with a novel insertion in the prion protein gene, PRNP. DESIGN Clinical description of a kindred. SETTING Mayo Clinic Alzheimer Disease Research Center (Rochester, Minnesota). SUBJECTS Two pathologically confirmed cases and their relatives. MAIN(More)
Many people with rapid eye movement (REM) sleep behavior disorder (RBD) have an underlying synucleinopathy, the most common of which is Lewy body disease. Identifying additional abnormal clinical features may help in identifying those at greater risk of evolving to a more severe syndrome. Because gait disorders are common in the synucleinopathies, early(More)
A 37-year-old woman, during her second remission of acute myeloid leukemia, presented with severe neck pain and cervico-brachial neuralgia. Investigation revealed a C5-C6 spondylodiscitis. A CT-guided anterior biopsy decompressed the mass, immediately alleviated the symptoms, and isolated a rare yeast: Blastoschizomyces capitatus. To our knowledge, only(More)