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Titolo:
FREEZE-ETCHING STUDY OF THE AXOSOMATIC SYNAPSES IN THE RAT SENSORIMOTOR CORTEX
Autore:
BOZHILOVAPASTIROVA A;
Indirizzi:
MED UNIV SOFIA,DEPT ANAT & HISTOL SOFIA 1431 BULGARIA
Titolo Testata:
European journal of morphology
fascicolo: 3, volume: 36, anno: 1998,
pagine: 189 - 200
SICI:
0924-3860(1998)36:3<189:FSOTAS>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
SENSORY-MOTOR CORTEX; MOUSE SMI CORTEX; SOMATOSENSORY CORTEX; SYNAPTIC PLASTICITY; MEMBRANE STRUCTURE; CEREBRAL-CORTEX; BARREL CORTEX; MONKEY; CONNECTIONS; NEURONS;
Keywords:
SYNAPSES; AXOSOMATIC SYNAPSES; FREEZE-ETCHING; RAT; SENSORIMOTOR CORTEX;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
47
Recensione:
Indirizzi per estratti:
Citazione:
A. Bozhilovapastirova, "FREEZE-ETCHING STUDY OF THE AXOSOMATIC SYNAPSES IN THE RAT SENSORIMOTOR CORTEX", European journal of morphology, 36(3), 1998, pp. 189-200

Abstract

The intramembranous structure of axosomatic synapses in the rat sensorimotor cortex was studied by means of thin sections and freeze-etchedreplicas. In thin sections, symmetric synaptic junctions were locatedon perikarya of pyramidal and non-pyramidal neurons. In freeze-etchedpreparations, the postsynaptic neuronal membrane exhibited the same structure as the surrounding nonjunctional membrane on both fracture faces. Probably this is the freeze-etching equivalent of symmetric axosomatic synapses. Asymmetric synapses were found on perikarya of nonpyramidal neurons. In freeze-etched replicas, the postsynaptic non-pyramidal neuronal membrane contains aggregates of particles on the extracellular half (E-face) as an intramembranous equivalent of asymmetric synapses. The particle packing density in these aggregates was measured and compared with that at the E-face of dendritic shaft and dendritic spine membranes. Intramembranous characteristics of the axosomatic synapses in the rat sensorimotor cortex are discussed in terms of plasticity of the synaptic contact zone.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/04/20 alle ore 08:57:57