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BACKGROUND AND AIMS: Current methods of peripheral nerve cutting are highly unsatisfactory. Imperfect cutting plane directly influences the effect of nerve anastomosis. For precise rejoining of cut nerve stumps directly, or to bridge large gap with autologous nerve graft, the surfaces of nerve stumps must be even and perfectly matching. Actual methods still do not provide such undisturbed pathway...
The whisker representations in the somatosensory barrel cortex of mice are modulated by sensory inputs associated with animal motor behavior which shows circadian rhythmicity. In a C57/BL mouse strain kept under a light/dark (LD 12:12) regime, we observed daily structural changes in the barrel cortex, correlated with the locomotor activity level. Stereological analysis of serial electron microscopic...
Bruchpilot (BRP) protein is a scaffolding presynaptic protein that has been detected in the nervous system of Drosophila melanogaster. BRP assembles a presynaptic active zone and is responsible for calcium channel clustering and release of a neurotransmitter from synaptic vesicles. We have used the antibody nc82 against BRP to visualize presynaptic elements of tetrad synapses formed between the photoreceptor...
In the visual system of D. melanogaster numerous circadian rhythms have been described. The most pronounced rhythmic changes have been detected in L2 monopolar cells located in the first neuropil of the optic lobe (the lamina). The L2’s dendritic tree perimeter oscillates in a circadian manner and is the largest at the beginning of the day. The aim of our study was to understand molecular mechanisms...
Mice show circadian rhythms in behaviour and metabolic processes but also in neuronal plasticity associated with the sensory input to the whisker representations in the somatosensory (barrel) cortex. We analyzed daily structural changes in the barrel cortex of the C57/BL mice in a light/dark (LD 12:12) regime and in constant darkness (DD). Using serial EM sections of the barrel cortex of mice sacrificed...
Classical conditioning, which combines stimulation of a row of facial vibrissae (conditioned stimulus, CS) with a tail shock (unconditioned stimulus, UCS) expands the representation of “trained” whiskers and increases GABAergic measures in the hollows of “trained” barrels in the first somatosensory cortex (SI) of adult mouse. This study investigated how the appearance of the emotional effect of aversive...
The reception of sensory information is an active process in which sensory input and motor behaviour influence each other. Mice explore the environment by rhythmically moving their whiskers. As a result, their representations in the somatosensory cortex are modulated. In the present study, we analyzed daily structural changes in the barrel cortex associated with locomotor activity level of the C57/BL...
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