Doris Hofer

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Reversible block of Na(+) channels by endogenous pentapeptide QYNAD has been reported to account for the fast relapses and remissions seen in autoimmune demyelinating disorders. Here it is shown that, in contrast to previous reports, synthetic QYNAD (10-100 microM) applied to Na(+) channels (Na(v)1.6 and 1.8) expressed in Xenopus oocytes was unable to block(More)
For several years, our group has been studying the in vivo role of adrenergic and cholinergic mechanisms in the immune-neuroendocrine dialogue in the rat model. The main results of these studies can be summarized as follows: (1) exogenous or endogenous catecholamines suppress PBL functions through alpha-2-receptor-mediated mechanisms, lymphocytes of the(More)
The specific, acute interaction of tolperisone, an agent used as a muscle relaxant and for the treatment of chronic pain conditions, with the Na(v1.2), Na(v1.3), Na(v1.4), Na(v1.5), Na(v1.6), Na(v1.7), and Na(v1.8) isoforms of voltage dependent sodium channels was investigated and compared to that of lidocaine. Voltage dependent sodium channels were(More)
OBJECTIVE To determine whether patients with pyridoxine-responsive seizures but normal biomarkers for antiquitin deficiency and normal sequencing of the ALDH7A1 gene may have PNPO mutations. METHODS We sequenced the PNPO gene in 31 patients who fulfilled the above-mentioned criteria. RESULTS We were able to identify 11 patients carrying 3 novel(More)
Psychophysical experiments in humans have revealed similar characteristics of visual receptive fields as were found in cats and monkeys from retinal ganglion cell recordings. In addition, in some retinal ganglion cells of cats the GABA antagonist bicuculline decreases the activity of the inhibitory surround. These findings led to two predicitions: 1)(More)
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