Plicní aspergilóza patří mezi zánětlivá onemocnění způsobená houbami rodu Aspergillus. V závislosti na stavu imunitního systému a plicního parenchymu nemocného existují invazivní, semi-invazivní a neinvazivní formy onemocnění. V diagnostice tohoto onemocnění hrají hlavní úlohu prostý rentgenový snímek hrudníku a HRCT plic. Prezentujeme kazuistiku pacienta s nově diagnostikovaným high-grade gliomem mozku, u kterého se v důsledku antiedematózní terapie kortikoidy rozvinula invazivní plicní aspergilóza včetně mimoplicní disseminace., Pulmonary aspergillosis belongs to inflammatory diseases caused by Aspergillus spp. Invasive, semi-invasive and non-invasive forms of the disease exist depending on the level of immunity and possible impairment of pulmonary parenchyma. Chest X ray and lung HRCT play the key role in the diagnostics of this disease. We present a patient with newly discovered high grade glioma of the brain, who had contracted invasive pulmonary aspergillosis due to antiedematous corticotheraphy., Lukáš Hrdina, Eva Čecháková, Filip Čtvrtlík, Stanislav Buřval, Barbora Remeníková, and Literatura 6
The study investigated whether specific changes in phase synchrony in the beta 2 frequency band of EEG (25-35 Hz) occurred during a recognition task. The level of synchrony was examined between one hundred and eighty loci in the frontal and temporal lobes of eight epileptic patients with intracerebral electrodes; the EEG records were obtained during a visual oddball task. In each pair of records, the correlation curves were created from the sequence of correlation coefficients calculated. These curves consisted of irregular oscillations between the maximal and minimal r-values. Transient highly synchronized activity was observed during the whole time course of the experiment in all record pairs investigated and a significant relationship was found between the number of such episodes and the mean correlation coefficient (Spearman R 0.84; N 3240; p<0.001). On averaged curves, which were calculated using stimulus onsets as the trigger of averaging, a significant increase of the mean correlation coefficient in the post-stimulus epoch was found (p<0.01 after both target and non-target stimuli; t-test for dependent samples). As the cognitive demand significantly increases after stimulus presentation, the results are considered to be the first evidence from intracranial recording of increased synchronization in the beta 2 frequency band related to the cognitive activity., M. Kukleta ... [et al.]., and Obsahuje seznam literatury
In the mammalian neocortex, the calcium-binding protein calretinin is expressed in a subset of cortical interneurons. In the recent years, research on interneurons is one of the most rapidly growing fields in neuroscience. This review summarizes the actual knowledge of the functions of calretinin in neuronal homeostasis and particularly of the distribution, connectivity and physiological properties of calretinin expressing interneurons in the neocortex of rodents and primates, including humans. The possible neuroprotective role of calretinin and the presumed “resistance” of calretinin-expressing interneurons to various pathological processes are also discussed., F. Barinka, R. Druga., and Obsahuje bibliografii a bibliografické odkazy
Sleep is regulated by complex biological systems and environmental influences, neither of which is fully clarified. This study demonstrates differential effects of partial sleep deprivation (SD) on sleep architecture and psychomotor vigilance task (PVT) performance using two different protocols (sequentially) that each restricted daily sleep to 3 hours in healthy adult men. The protocols differed only in the period of sleep restriction; in one, sleep was restricted to a 3-hour block from 12:00 AM to 3:00 AM, and in the other, sleep was restricted to a block from 3:00 AM to 6:00 AM. Subjects in the earlier sleep restriction period showed a significantly lower percentage of rapid-eye-movement (REM) sleep after 4 days (17.0 vs. 25.7 %) and a longer latency to the onset of REM sleep (L-REM) after 1 day (78.8 vs. 45.5 min) than they did in the later sleep restriction period. Reaction times on PVT performance were also better (i.e. shorter) in the earlier SR period on day 4 (249.8 vs. 272 ms). These data support the view that earlier-night sleep may be more beneficial for daytime vigilance than later-night sleep. The study also showed that cumulative declines in daytime vigilance resulted from loss of total sleep time, rather than from specific stages, and underscored the reversibility of SR effects with greater amounts of sleep., H. Wu ... [et al.]., and Obsahuje bibliografii a bibliografické odkazy