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Up-regulation of delayed outwardly rectifying potassium currents in reactive astrocytes after certical stab wound
Anděrová, Miroslava; Neprašová, H.; Petřík, D.; Chvátal, Alexandr; Syková, Eva
2001 - anglický
Hypertrophied astrocytes in the close vicinity of the stab wound are characterized by an up-regulation of delayed outwardly rectifying K+ currents and increased K+ accumulation in the vicinity of the astrocyte membrane.
Klíčová slova:
astrocytes
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Up-regulation of delayed outwardly rectifying potassium currents in reactive astrocytes after certical stab wound
Hypertrophied astrocytes in the close vicinity of the stab wound are characterized by an up-regulation of delayed outwardly rectifying K+ currents and increased K+ accumulation in the vicinity of the ...
Suppression of 2f1-f2 distortion product otoacoustic emissions by electrical stimulation of the inferior colliculus in guinea pigs
Popelář, Jiří; Mazelová, Jana; Syka, Josef
2001 - anglický
Electrical stimulation of certain parts of the IC resulted in the depression of the DPOAE amplitude by 0.1-2 dB. The value of maximal DPOAE suppression was similar to the DPOAE suppression produced by acoustical stimulation of the contralateral ear. Our results indicate that electrical stimulation of the external cortex of the IC can activate the efferent system and produce DPOAE suppression by similar mechanisms as does acoustical stimulation of the contralateral ear.
Klíčová slova:
guinea pigs
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Suppression of 2f1-f2 distortion product otoacoustic emissions by electrical stimulation of the inferior colliculus in guinea pigs
Electrical stimulation of certain parts of the IC resulted in the depression of the DPOAE amplitude by 0.1-2 dB. The value of maximal DPOAE suppression was similar to the DPOAE suppression produced by ...
Biocompatible polymer hydrogels usable for nervous tissue regeneration
Lesný, Petr; DeCroos, Jane; Přádný, Martin; Vacík, Jiří; Syková, Eva
2001 - anglický
PHPMA hydrogel matrices have the ability to induce tissue formation within them and therefore support the regeneration of nervous tissue.
Klíčová slova:
hydrogels
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Biocompatible polymer hydrogels usable for nervous tissue regeneration
PHPMA hydrogel matrices have the ability to induce tissue formation within them and therefore support the regeneration of nervous tissue.
Abnormal skeletogenesis occurs in the Splotch (Sp2H) Mutant
Lišková, J.; Růžičková, Kateřina; Buckiová, Daniela
2001 - anglický
Homozygous Splotch embryos (days 16.5-18.5 of gestation)displayed severe rib and neural arches abnormalities. (100% penetrance).
Klíčová slova:
pax 3; skeletal; defects
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Abnormal skeletogenesis occurs in the Splotch (Sp2H) Mutant
Homozygous Splotch embryos (days 16.5-18.5 of gestation)displayed severe rib and neural arches abnormalities. (100% penetrance).
Development of right-left asymmetry in the chick embryo
Buckiová, Daniela; Kofroňová, Olga; Jelínek, R.
2001 - anglický
Using SEM we have studied the ventral surface of the chick node. In contrast to mouse, we have found neither the pit nor the cilia.
Klíčová slova:
cilia; node; chick
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Development of right-left asymmetry in the chick embryo
Using SEM we have studied the ventral surface of the chick node. In contrast to mouse, we have found neither the pit nor the cilia.
Interaction between descending and ascending pathways in the auditory system
Syka, Josef
2001 - anglický
Inactivation of the AC resulted in changes in the latency and amplitude of some parts of click-evoked IC responses and in either an increase or decrease in the firing rate of IC neurons in comparison with normal control conditions. The interaction of ascending and descending pathways in the auditory system may contribute to better frequency tuning, suppression of non-relevant acoustical signals and concentration of our attention on specific signals (for example the voice of the speaker.)
Klíčová slova:
acoustical stimulation
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Interaction between descending and ascending pathways in the auditory system
Inactivation of the AC resulted in changes in the latency and amplitude of some parts of click-evoked IC responses and in either an increase or decrease in the firing rate of IC neurons in comparison ...
NADPH-d - positive neurons in the auditory cortex of young and very old rats
Nwabueze-Ogbo, Fidel Chijoke; Druga, R.; Syka, Josef
2001 - anglický
In young and very old animals stained neurons were localized in layers II-VI and in the subcortical white matter. A significantly higher packing density of labeled supragranular layers. In very old animals the thickness of the auditory cortex and the neuronal density was reduced when compared to the young.
Klíčová slova:
auditory cortex
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
NADPH-d - positive neurons in the auditory cortex of young and very old rats
In young and very old animals stained neurons were localized in layers II-VI and in the subcortical white matter. A significantly higher packing density of labeled supragranular layers. In very old ...
Representation of communication sounds in the inferior colliculus of the guinea pig
Šuta, Daniel; Kvašňák, Eugen; Popelář, Jiří; Syka, Josef
2001 - anglický
The spectrotemporal discharge patterns of the neuronal population were clearly related to the spectrotemporal acoustic patterns of vocalization sounds.This study provides evidence for encoding of the spoctrotemporal acoustic pattern of vocalization sounds in a spcific and distributed way by the firing patterns of a population of IC units.
Klíčová slova:
guinea pig
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Representation of communication sounds in the inferior colliculus of the guinea pig
The spectrotemporal discharge patterns of the neuronal population were clearly related to the spectrotemporal acoustic patterns of vocalization sounds.This study provides evidence for encoding of the ...
Changes in astrocytic structure in rat hippocampus evoked by activation of glutamate receptors and learning
Šimonová, Zuzana; Náměstková, Kateřina; Vargová, Lýdia; Syková, Eva
2001 - anglický
Stimulation by NMDA application or learning alters astrocytic structure.
Klíčová slova:
hippocampus
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Changes in astrocytic structure in rat hippocampus evoked by activation of glutamate receptors and learning
Stimulation by NMDA application or learning alters astrocytic structure.
Extracellular space volume fraction and geometry in human cortex and glial tumors
Homola, Aleš; Vargová, Lýdia; Zámečník, J.; Tichý, M.; Beneš, V.; Syková, Eva
2001 - anglický
Ecs diffusion parameters in human temporal cortex similar to those previously determined in rat cortex. Volume fraction ? and tortuosity ? are increased in astrocytic gliomas and the higher the glioma´s WHO grade the greater the ECS volume and tortuosity increase. Migration and invasiveness correlate with an increase in ECS volume.
Klíčová slova:
glial tumors
Plné texty jsou dostupné na jednotlivých ústavech Akademie věd ČR.
Extracellular space volume fraction and geometry in human cortex and glial tumors
Ecs diffusion parameters in human temporal cortex similar to those previously determined in rat cortex. Volume fraction ? and tortuosity ? are increased in astrocytic gliomas and the higher the ...
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