Transientní monoklonální gamapatie je stav spojený s přechodnou přítomností monoklonálního imunoglobulinu v séru a/ nebo moči. V článku je popsáno několik kazuistik pozorování přechodné monoklonální gamapatie., Transient monoclonal gammopathy is state involved in present monoclonal immunoglobulin in serum and urine. In article is described several cases observation of transient monoclonal gammopathy., Spáčilová J., Šolcová L., Tichý M., and Literatura 4
Autoři probírají kazuistiku 12leté pacientky s alergickou dispozicí, u níž v průběhu akutního horečnatého stavu s řadou komplikací byl v séru zachycen paraprotein IgM lambda. Při kontrolní elektroforéze, provedené za 4 měsíce, již nebyl prokazatelný. V článku je uvedena literatura zabývající se problematikou transientních paraproteinemií, diskutovány možné vztahy a příčiny. Transientní paraproteinemie jsou zřejmě častější, než se předpokládá., The case study of a 12 - year-old girl with allergic disposition is discussed. During an acute feverish condition accompanied with a number of complications, the IgM lambda paraprotein was found in the serum sample. In the subsequent control electrophoresis which was carried four months later, this paraprotein was not found any more. Literature dealing with the problems of transient paraproteinemias is included in this work and possible causal relations are discussed. Transient paraproteinemias seem to be more frequent than originally assumed., Jan Buryška, B. Mlejnková, M. Nieslaniková, and Lit. 13
Amphicrossus japonicus is the first known facultatively aquatic nitidulid. The adult beetles breed in bamboo sap and subsequently enter water-filled bamboo culms. In water they breathe via a ventral air sheath held by hydrofuge pubescence. The beetles are facultative predators and hunt mosquito larvae, which they grab with their forelegs. The trend to facultative predation in Cucujoidea and the transition for beetles in general from semi-liquid decaying organic matter into water is discussed.
Central pattern generators (CPGs) play an important role in controlling rhythmic movements in vivo. Increased insight into mechanisms of CPGs can be obtained by perturbing neuron activities so as to study a range of behaviors. By applying this method, a series of simulations were performed to research different transition modes between firing patterns in a pacemaker neuron model of stomatogastric ganglion (STG). Firstly, with the perturbation of parameters in model, such as external stimulus, parameters in compartments and connection between compartments, different firing patterns and bifurcation of inter-spike intervals (ISIs) were obtained to exhibit the impact of single parameter on the transions between spiking and bursting. Moreover, perturbing two parameters gCa, Iext simultaneously induced the continuous variation of the bifurcation mode, which implied the crucial role of calcium channel in regulating the rhythm generation. Finally, a two-dimensional parameter space (gCa, Iext) was constructed by spike-counting method to capture the distribution of the firing patterns and different transition mode between them in a comprehensive aspect. In this parameter space, three basic transition modes were concluded: bifurcation ring, period-doubling mode and period-adding mode.
Chlorophyll (Chl) fluorescence temperature cinve (FTC) of primary leaves of spring barley (Hordeum vulgare L.), cultivated imder a low irradiance, was studied at low actinic radiation excitation (436 nm, 2 W m'^) under a heating regime consisting of a linear increase of temperature (0.083 °C s’*), followed by a period of constant temperature. After prompt cooling of the sample to 77 K, Chl fluorescence spectra at defined points of the temperature regime were measured. Two distinct temperature and kinetic regions expressed by two discemible temperature maxima were observed for ťhis type of the FTC. Two triggering temperatures of successive irreversible changes are postulated at 45-48 “C and 53-55 °C temperature intervals, respectively; they may correlate with the heat inactivation of photosystem 2 and with changes of the chloroplast and cytoplasmic membrane integrity.