Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Anatomy and embryology 173 (1985), S. 237-246 
    ISSN: 1432-0568
    Keywords: Adult human frontal cortex ; Somatostatin ; Immunocytochemistry ; Non-pyramidal neurons ; Interstitial neurons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The distribution of somatostatin-immunoreactive cell bodies and axons throughout the human isocortex and subjacent white matter was examined. Vibratome sections of cortical tissue (30–40 μm thick) obtained at surgery were treated to reveal the antigen by the unlabelled antibody enzyme method. Two types of somatostatin-immunoreactive axons were present: short, coiled axons and extended ones that follow a straight course in various directions. Somatostatin immunoreactive nerve cell bodies were encountered in layers II–VI and in the subjacent white matter. The majority of labelled cells were found in the white matter and layer VI, and then in layers II and III. The immunoreactive perikarya were fusiform, triangular or multipolar in shape and did not show preferential orientation of their long axis. Frequently, the fusiform neurons in layer VI and in the white matter were aligned parallel to radiate bundles of myelinated fibres. The immunoreactive neurons gave rise to a few thick dendrites. Often thin axon-like processes could also be recognized, originating either from the cell body or from a thicker dendrite. After destaining of the chromogen and counterstaining with aldehydefuchsin and gallocyanin chromealum, the formerly immunoreactive neurons displayed a light and eccentrically located nucleus. The soma contained only a sparse amount of basophilic substance and was nearly devoid of lipofuscin granules. In electron micrographs, the cisterns of the rough endoplasmic reticulum (RER) were localized near the periphery of the soma. Immunoreactivity occurred along membranes of the RER cistern, outer mitochondrial membrane, and in particles 120–150 μm in diameter. Rounded areas (up to a diameter of 1 μm) lacked immunoreactivity. Furthermore, there were a few tiny lysosomes.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-0568
    Keywords: Neuropeptide Y ; Human brain ; Immunocytochemistry ; High performance liquid chromatography ; Colocalization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The presence, chromatographic properties and localization of neuropeptide Y was demonstrated in postmortem human brain areas of neurologically and neuropsychiatrically normative controls using immunocytochemistry and high performance liquid chromatography combined with radioimmunoassay. NPY-immunoreactivity was found in many regions of the prosencephalon. Numerous perikarya and fibers were present in the neocortex, basal ganglia and limbic-hypothalamic areas. A moderate number of neurons and fibers was observed in the basal forebrain, including the septal complex. A comparative immunohistochemical investigation in perfusion-fixed brains of the old-world ape Saguinus oedipus revealed an almost identical distribution of NPY-immunoreactivity with only minor differences. Colocalization experiments on 1–2 μm thin consecutive paraffin sections revealed a large number of NPY neurons throughout the human neostriatum and amygdaloid complex that were also positive for somatostatin. Our findings indicate that detection of neuropeptides in fresh or fixed post-mortem human tissue by different immunochemical methods may actually reflect the in vivo conditions. In addition, the wide distribution of NPY throughout the human brain and its colocalization with other neurotransmitters suggests a physiological role as neuroactive substance, i.e. neuromodulator in the primate central nervous system.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-0568
    Keywords: Glucagon ; Glicentin ; Dopamine-beta-hydroxylase ; Medulla oblongata ; A1/A2 Region ; Gumea pig
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Glucagon- (GLU-IR), glicentin- (GLI-IR) and dopamine-beta-hydroxylase (DBH-IR) immunoreactive neurons were mapped in the medulla oblongata of colchicine pretreated guinea pigs. Numerous GLU-IR and GLI-IR perikarya are located in the area of the nucleus ambiguus, in the adjacent formatio reticularis, and less frequently in the nucleus reticularis lateralis, the nuclei raphe obscurus and commissuralis and the caudal part of the nucleus solitarius. In these nuclei, the coexistence of glicentin and glucagon within the same perikarya is demonstrated. DBH-IR is also found in neurons of the nuclei commissuralis, solitarius and reticularis lateralis (A1/A2 system of Dahlström and Fuxe 1964, 1965). However, a coexistence of GLU/GLI-IR and DBH-IR within the same neuron is not observed.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Anatomy and embryology 173 (1986), S. 371-376 
    ISSN: 1432-0568
    Keywords: Motilin-like immunoreactivity ; RIA ; HPLC ; Cat ; Intestine ; Rat ; Cerebellum ; Purkinje cells ; Dendrites ; Neocortex ; Pyramidal cells ; Hippocampus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Motilin was demonstrated by the immunoperoxidase technique in endocrine cells of the gastrointestinal tract using several specific antisera. Motilin-like immunoreactivity could only be demonstrated with one of these antisera and was observed in Purkinje cells and dendrites of the cerebellum, in pyramidal cells and dendrites of the cerebral cortex and in dendrites of the CA3 field of the hippocampus of the rat. Very low motilin-like immunoreactivity was found in cerebellum as well as in cerebral cortex using radioimmunoassay. However, using reverse phase liquid chromatography combined with UV-detection and radioimmunoassay, no peak of a peptide corresponding to synthetic motilin was detectable in rat cerebellar extracts, in contrast to findings in rat duodenum. The results do not suggest that motilin is an intrinsic neuroactive substance of the cerebellum.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1432-0568
    Keywords: Atrial natriuretic peptide ; Pekin duck ; Salt gland ; Immunocytochemistry ; High performance liquid chromatography ; Radioimmunoassay
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A novel peptide hormone, atrial natriuretic factor/cardiodilatin (ANP/CDD), was recently isolated and characterized from mammalian heart. Its presence has been demonstrated in several organs that contribute to water and sodium homeostasis, such as salivary glands. This study demonstrates the presence of ANP/CDD immunoreactivity in the salt gland of Pekin ducks by high performance liquid chromatography, radioimmunoassay and immunocytochemistry, using a specific antibody against atriopeptide I. A small number of distinct, ovoid or cuboid shaped ANP/CDD-immunoreactive cells were localized in the connective tissue surrounding and separating the central secretory tubules, whereas no immunostaining was observed in the peripheral tubules. Salt glands of ducks that were adapted to salt water revealed a significant hypertrophy of their secretory lobules. However, no differences were found between the number or localization of immunoreactive cells in the salt gland of salt water-acclimatized ducks and non-stimulated glands of ducks that were housed with ad libitum access to fresh water. Our results indicate that ANP/CDD may play a role in the regulation of sodium secretion in the salt gland of aquatic birds.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 54 (1976), S. 423-430 
    ISSN: 1432-1440
    Keywords: Neuromuscular disorders ; Centronuclear myopathy ; Type I-fiber atrophy ; “Myotubelike structures” ; Neuromuskuläre Erkrankungen ; centronucleäre Myopathie ; Typ I-Faser Atrophie ; “Myotube-like structures”
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wird über eine Familie berichtet, in welcher sowohl die Mutter, als auch ihre beiden Töchter an einer congenitalen, langsam progredienten neuromuskulären Erkrankung leiden. Die im Rahmen der Muskelbiopsie zu erhebenden histologischen, histochemischen und ultrastrukturellen Befunde zeigen bei der Mutter das Vollbild der sog. centronucleären Myopathie. Die charakteristischen zentralständigen Kerne mit den umgebenden pericentronucleären Strukturanomalien der Fasern werden nahezu in allen Muskelfasern angetroffen. Bei den Töchtern dagegen sind morphologisch fast ausschließlich die Typ I-Fasern befallen, welche zusätzlich im Durchmesser kleiner als normal erscheinen. Der Nachweis dieser beiden Formen von centronucleärer Myopathie in einer Familie beweist, daß hier offenbar zwei morphologische Varianten, wahrscheinlich sogar Stadien eines Krankheitsbildes vorliegen. Das zusätzliche Vorhandensein einiger weiterer struktureller Besonderheiten (rod bodies, core-ähnliche Areale) unterstreicht die Verwandtschaft der Erkrankung mit anderen congenitalen langsam progredienten Myopathien (nemaline myopathy, central core disease).
    Notes: Summary This report deals with a family in which the mother and her two daughters suffer from a congenital, slowly progressive neuromuscular disease. Histological, histochemical and ultrastructural observations of the mother's muscle biopsy reveal the characteristics of the centronuclear myopathy. In this case central nuclei and pericentronuclear abnormalities of muscle fibers are found in almost all fibers. Biopsies obtained of the two daughters show alterations especially of type I-fibers, which often are smaller than normal. The presence of these two forms of centronuclear myopathy in one family indicates that these may be only different morphological types or states of one illness. Additionally, other structural findings (rod bodies, core like regions) emphasize the similarities with other congenital slowly progressive myopathies (nemaline myopathy, central core disease).
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 18 (1971), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Peptides 5 (1984), S. 91-100 
    ISSN: 0196-9781
    Keywords: Brain ; Immunohistochemistry ; Somatostatin ; Turtle
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1435-1463
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of comparative physiology 178 (1996), S. 771-778 
    ISSN: 1432-1351
    Keywords: Area postrema ; Rabbit ; Patch clamp ; Glutamate-receptor ; GABA-receptor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Using the patch-clamp technique in combination with sliced tissue preparation the membrane properties of newborn rabbit area postrema neurons were investigated. The neurons responded upon depolarization with a fast Na +-current followed by an inactivating and non-inactivating K +-current. GABA-activated currents were investigated resulting in a large Cl--conductance, indicating the expression of GABAA-receptors. The expression of glutamate receptor mRNA was studied by in situ hybridization and electrophysiological measurements of these receptors by means of the patch-clamp technique. As a main result it was found that ionotropic glutamate receptors in the area postrema are composed of “flop” variants of the GluA-, GluB- and GluC-subunits.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...