Number of found documents: 118
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Nucleoli of naked megakaryocytic nuclei
Janoutová, J.; Likovský, Zbyněk
2001 - English
The differentiation and maturation of megakaryocytes is characterized by endomitotic divisions which result in the formation of large polyploid cells the cytoplasm of which is segregated as thrombocytes. The present study was undertaken to provide more information on the incidence of nucleoli in naked magakaryocytic nuclei representing terminal stages of the megakaryocytic development after the loss of the cytoplasm transformed to thrombocytes. Keywords: nucleoli; megakaryocytes Available at various institutes of the ASCR
Nucleoli of naked megakaryocytic nuclei

The differentiation and maturation of megakaryocytes is characterized by endomitotic divisions which result in the formation of large polyploid cells the cytoplasm of which is segregated as ...

Janoutová, J.; Likovský, Zbyněk
Ústav experimentální medicíny, 2001

Morphology and distribution of nadph-diaphorase-positive neurons in the auditory cortex of the rat
Nwabueze-Ogbo, Fidel Chijoke; Druga, R.; Syka, Josef
2001 - English
Our results indicate the preferred localization of the NADPH-d/NOS positive neurons in the infragranular layers, which are sources of the majority of corticofugal neurons projecting to the subcortical structures. Keywords: nadph-diaphorase-positive Available at various institutes of the ASCR
Morphology and distribution of nadph-diaphorase-positive neurons in the auditory cortex of the rat

Our results indicate the preferred localization of the NADPH-d/NOS positive neurons in the infragranular layers, which are sources of the majority of corticofugal neurons projecting to the subcortical ...

Nwabueze-Ogbo, Fidel Chijoke; Druga, R.; Syka, Josef
Ústav experimentální medicíny, 2001

Functional characteristics of neurons in the auditory thalamus
Kvašňák, Eugen; Šuta, Daniel; Popelář, Jiří; Syka, Josef
2001 - English
The MGB, is similarly as the inferior colliculus (IC) is organized into three subdivisions, with the ventral MGB characterized by the quickest onset reaction with the lowest thresholds to auditory stimulation and with the same ratio of monotonic and non-monotonic RLFs. Keywords: auditory thalamus Available at various institutes of the ASCR
Functional characteristics of neurons in the auditory thalamus

The MGB, is similarly as the inferior colliculus (IC) is organized into three subdivisions, with the ventral MGB characterized by the quickest onset reaction with the lowest thresholds to auditory ...

Kvašňák, Eugen; Šuta, Daniel; Popelář, Jiří; Syka, Josef
Ústav experimentální medicíny, 2001

A behavioral and electrophysiological study of the effects of noise exposure on auditory function in rat
Rybalko, Natalia; Mazelová, Jana; Syka, Josef
2001 - English
The values of the gap detection threshold doubled after exposure to 110 dB SPL and quadrupled after exposure to 115-120 dB SPL. GDT recovered to the original values during 1-2 weeks. Increased gap detection thresholds after noise exposure appear connected with elevated hearing thresholds, the deterioration in the performance of some animals in behavioral rasts after strong intensity noise (120 dB SPL) may signal the occurrence of tinnitus in these animals. Keywords: auditory system Available at various institutes of the ASCR
A behavioral and electrophysiological study of the effects of noise exposure on auditory function in rat

The values of the gap detection threshold doubled after exposure to 110 dB SPL and quadrupled after exposure to 115-120 dB SPL. GDT recovered to the original values during 1-2 weeks. Increased gap ...

Rybalko, Natalia; Mazelová, Jana; Syka, Josef
Ústav experimentální medicíny, 2001

Neuron-glia communication by extrasynaptic transmission
Syková, Eva
2001 - English
Dynamic changes in ECS ionic composition, volume and geometry accompany neuronal activity, neuronal loss, glial development and proliferation, aging, CNS injury, anoxia/ischemia, spreading depression, tumors, inflammation dyemyelination and many other brain pathological states. Keywords: neuronal activity Available at various institutes of the ASCR
Neuron-glia communication by extrasynaptic transmission

Dynamic changes in ECS ionic composition, volume and geometry accompany neuronal activity, neuronal loss, glial development and proliferation, aging, CNS injury, anoxia/ischemia, spreading depression, ...

Syková, Eva
Ústav experimentální medicíny, 2001

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 - English
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. Keywords: astrocytes Available at various institutes of the ASCR
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 ...

Anděrová, Miroslava; Neprašová, H.; Petřík, D.; Chvátal, Alexandr; Syková, Eva
Ústav experimentální medicíny, 2001

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 - English
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. Keywords: guinea pigs Available at various institutes of the ASCR
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 ...

Popelář, Jiří; Mazelová, Jana; Syka, Josef
Ústav experimentální medicíny, 2001

Biocompatible polymer hydrogels usable for nervous tissue regeneration
Lesný, Petr; DeCroos, Jane; Přádný, Martin; Vacík, Jiří; Syková, Eva
2001 - English
PHPMA hydrogel matrices have the ability to induce tissue formation within them and therefore support the regeneration of nervous tissue. Keywords: hydrogels Available at various institutes of the ASCR
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.

Lesný, Petr; DeCroos, Jane; Přádný, Martin; Vacík, Jiří; Syková, Eva
Ústav experimentální medicíny, 2001

Abnormal skeletogenesis occurs in the Splotch (Sp2H) Mutant
Lišková, J.; Růžičková, Kateřina; Buckiová, Daniela
2001 - English
Homozygous Splotch embryos (days 16.5-18.5 of gestation)displayed severe rib and neural arches abnormalities. (100% penetrance). Keywords: pax 3; skeletal; defects Available at various institutes of the ASCR
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).

Lišková, J.; Růžičková, Kateřina; Buckiová, Daniela
Ústav experimentální medicíny, 2001

Development of right-left asymmetry in the chick embryo
Buckiová, Daniela; Kofroňová, Olga; Jelínek, R.
2001 - English
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. Keywords: cilia; node; chick Available at various institutes of the ASCR
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.

Buckiová, Daniela; Kofroňová, Olga; Jelínek, R.
Ústav experimentální medicíny, 2001

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