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There has never been a wholesale way of identifying neurons that are monosynaptically connected either to some other cell group or, especially, to a single cell. The best available tools, transsynaptic tracers, are unable to distinguish weak direct connections from strong indirect ones. Furthermore, no tracer has proven potent enough to label any connected(More)
N-ethylmaleimide-sensitive fusion protein (NSF) and alpha-SNAP play key roles in vesicular traffic through the secretory pathway. In this study, NH2- and COOH-terminal truncation mutants of alpha-SNAP were assayed for ability to bind NSF and stimulate its ATPase activity. Deletion of up to 160 NH2-terminal amino acids had little effect on the ability of(More)
The relationship between plaque pathology and disease duration was examined in 15 patients with multiple sclerosis who died early in the course of their illness. Myelin-stained sections revealed that most plaques examined in patients who died during the first month of their illness showed evidence of ongoing myelin destruction accompanied by a loss of(More)
The dynamics of primary progressive multiple sclerosis differ from those of the more common secondary progressive form. The observation by MRI that the frequency of enhancement with gadolinium-DTPA, a marker for blood-brain barrier dysfunction, is significantly less in the primary progressive form, has led to the hypothesis that inflammation is less intense(More)
Recent autopsy studies suggest that remyelinated shadow plaques located in otherwise intact white matter are the outcome of a previous single episode of acute demyelination. In the present study, of 98 remyelinated plaques examined in 15 patients with multiple sclerosis who died between 27 days and 5 years after clinical onset, 15 showed evidence of a(More)
Soluble N-ethylmaleimide-sensitive fusion attachment protein receptor (SNARE)-mediated fusion of synaptic vesicles with the presynaptic-plasma membrane is essential for communication between neurons. Disassembly of the SNARE complex requires the ATPase N-ethylmaleimide-sensitive fusion protein (NSF). To determine where in the synaptic-vesicle cycle NSF(More)
Two families have been described previously with the features of an autosomal dominant familial cerebral amyloid angiopathy with nonneuritic plaque formation. The clinical features of the cases were dementia, spastic paralysis and ataxia. It has now been established that both families were descended from a common ancestor and the case histories of 26(More)
We investigate the use of a novel multi-lens imaging system in the context of biometric identification, and more specifically, for iris recognition. Multi-lenslet cameras offer a number of significant advantages over standard single-lens camera systems, including thin form-factor and wide angle of view. By using appropriate lenslet spacing relative to the(More)
Twenty-one patients with tropical spastic paraparesis (TSP), all of whom were born in the Caribbean and who had migrated to the United Kingdom, are described. All had a progressive spastic paraparesis developing many years after immigration and all 19 tested had antibodies to the human T cell lymphotropic retrovirus type 1 (HTLV1). The clinical and(More)
BACKGROUND Use of raltegravir with optimum background therapy is effective and well tolerated in treatment-experienced patients with multidrug-resistant HIV-1 infection. We compared the safety and efficacy of raltegravir with efavirenz as part of combination antiretroviral therapy for treatment-naive patients. METHODS Patients from 67 study centres on(More)