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5′-Nucleotidase activity as a synaptic marker of parasagittal compartmentation in the mouse cerebellum
Springer Science and Business Media LLC - Tập 24 Số 11 - Trang 879-890 - 1995
In the molecular layer of the mouse cerebellum, the histochemical activity of
the adenosine-producing ectoenzyme 5′-nucleotidase discloses a parasagittal
pattern of alternating enzyme-rich and enzyme-poor bands. In the rat,
5′-nucleotidase activity transiently labels cerebellar synapses during postnatal
development and shifts later on towards an exclusive glial location in the
molecular layer. We ...
Dorsal thalamic connections of the ventral lateral geniculate nucleus of rats
Springer Science and Business Media LLC - Tập 29 - Trang 31-41 - 2000
In order to understand better the organisation of the ventral lateral geniculate
nucleus of the ventral thalamus, this paper has examined the patterns of
connections that this nucleus has with various nuclei of the dorsal thalamus in
rats. Injections of biotinylated dextran or cholera toxin subunit B were made
into the parafascicular, central lateral, posterior thalamic, medial dorsal,
lateral dor...
Altered patterns of innervation in frog muscle after denervation
Springer Science and Business Media LLC - Tập 5 - Trang 719-730 - 1976
The pattern of reinnervation of muscle fibres after a nerve crush was examined
in the cutaneous pectoris muscle of the frog by microscopy and
electrophysiology. Normally, about 16% of the muscle fibres are innervated by
more than one motor neuron. Two months after reinnervation, about 50% of the
fibres are polyneuronally innervated and this high incidence persists for at
least seven months. The to...
Terminal sprouting in partially denervated muscle of the mouse: a scanning electron microscopic study
Springer Science and Business Media LLC - Tập 17 - Trang 563-571 - 1988
Terminal sprouting in the mouse gastrocnemius muscle was examined by scanning
electron microscopy after partial denervation. After one of the two muscle
nerves in the medial head was cut, terminal sprouts arose from the outer edge of
the intact motor endplates and grew out onto a connective tissue layer on the
muscle fibres. The sprouts were very slender along their length, although some
had a var...
Regional and cellular distribution of neural visinin-like protein immunoreactivities (VILIP-1 and VILIP-3) in human brain
Springer Science and Business Media LLC - Tập 28 - Trang 655-662 - 1999
Neural visinin-like proteins (VILIPs) are members of the neuronal subfamily of
intracellular EF-hand calcium sensor proteins termed the NCS family, which are
thought to play important roles in cellular signal transduction. While numerous
studies suggest a wide but uneven distribution of these proteins in rat and
chicken brain, their location in, and possible significance for, the human
brain, rema...
Immunocytochemical identification of GABA in astrocytes located in white matter after inhibition of GABA-transaminase with gamma-acetylenic GABA
Springer Science and Business Media LLC - Tập 20 - Trang 290-298 - 1991
Several lines of evidence suggest that astrocytes contribute to the uptake and
degradation of the inhibitory neurotransmitter γ-aminobutyric acid (GABA).
Recent immunohistochemical studies have shown that GABA-like immunoreactivity
can be demonstrated in astrocytes in the grey matter of the rat's brainstem. The
present study investigates whether GABA is also present in astrocytes located in
the wh...
Distribution and morphology of myelinated perikarya and dendrites in the olfactory bulb of primates
Springer Science and Business Media LLC - Tập 9 - Trang 825-834 - 1980
Numerous myelinated perikarya occur in different layers of the olfactory bulbs
of a chimpanzee and two species of New World primates, that is, the squirrel and
the Cebus monkey. It appears that somata of all established neuron categories,
except for the mitral cells, can become ensheathed in myelin. Myelinated
dendritic segments are found in the periglomerular region and in the external
plexiform ...
Differential immunocytochemical localization of calretinin in the pineal gland of three mammalian species
Springer Science and Business Media LLC - Tập 25 - Trang 9-18 - 1996
Calcium plays an important role for signal transduction in the mammalian pineal
organ. The regulation of the intracellular concentration of free calcium
probably involves calcium-binding proteins of the calmodulin superfamily. In the
present study, we have investigated the expression of calretinin, one member of
this superfamily, in the pineal organ of hamsters, gerbils and guinea-pigs by
means of...
Myelination and axonal regeneration in the central nervous system of mice deficient in the myelin-associated glycoprotein
Springer Science and Business Media LLC - Tập 25 - Trang 303-313 - 1996
The myelin-associated glycoprotein, a member of the immunoglobulin superfamily,
has been implicated in the formation and maintenance of myelin sheaths. In
addition, recent studies have demonstrated that myelin-associated glycoprotein
is inhibitory for neurite elongationin vitro and it has therefore been suggested
that myelin-associated glycoprotein prevents axonal regeneration in lesioned
nervous ...
A giant nerve net with multi-effector synapses underlying epithelial adhesive strips in the mouth ofBeroë (Ctenophora)
Springer Science and Business Media LLC - Tập 24 - Trang 711-723 - 1995
We present ultrastructural evidence for the first known example of a giant nerve
net in the phylum Ctenophora. The giant fibre system inBeroë underlies paired
strips of adherent epithelial cells that run inside the lips. Interlocking
actin-lined cell junctions between opposing adhesive strips keepBeroë's large
mouth closed while the ctenophore searches for prey. The giant neurons, up to
6–8 μm in ...
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