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  • Articles: DFG German National Licenses  (4)
  • Key words Serotonin  (2)
  • Monkey (Macaca fuscata)  (2)
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  • Articles: DFG German National Licenses  (4)
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Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Changes in serotonergic neurons in the brain of pyrithiamine-induced acute thiamine-deficient mice (1999)
    Springer
    Acta neuropathologica 98 (1999), S. 614-621 
    Details
    ISSN: 1432-0533
    Keywords: Key words Serotonin ; Thiamine deficiency ; Immunohistochemistry ; Vulnerability ; Degeneration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We examined changes in 5-hydroxytriptamine (5-HT, serotonin) neurons in pyrithiamine-induced thiamine deficiency in mice immunohistochemically. Extensive decreases in the densities of 5-HT-immunoreactive fibers were detected in the lateral septal nucleus, the thalamus, the medial mammillary nucleus, the dorsal and the median raphe nuclei, the raphe obscurus nucleus, the tegmental area, the cerebellum and the vestibular nucleus, though only a small decrease was detected in the inferior colliculus. Most remarkably, degenerative winding fibers were detected between the deep mesencephalic nucleus and the ventral tegmental area. Increases in intensity of 5-HT immunoreactivity in the dorsal raphe nucleus and decreases in the number of 5-HT-immunoreactive cell bodies in the dorsal and the median raphe nuclei were detected. These results demonstrated the differential vulnerability of 5-HT neurons in thiamine-deficient mice. This is the first report to demonstrate changes in 5-HT neurons immunohistochemically throughout the brain of pyrithiamine-induced thiamine deficient mouse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004010051126
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Vulnerability to aging in the rat serotonergic system (1998)
    Springer
    Acta neuropathologica 96 (1998), S. 581-595 
    Details
    ISSN: 1432-0533
    Keywords: Key words Serotonin ; Raphe nuclei ; Aberrant fiber ; Aging ; Immunocytochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Distributional changes of serotonergic fibers associated with aging were demonstrated immunohistochemically. Old rat brains were morphologically characterized by the presence of peculiar features of serotonergic fibers not found in the young adult brain. In 24-month-old rats, these aberrant serotonergic fibers were subdivided into two groups according to morphological alterations: type 1 fibers consisting of thin fibers with moderately enlarged varicosities, and type 2 fibers consisting of much thicker fibers that have even larger varicosities and a tortuous course. These two types of fibers were distributed differentially in the forebrain. Type 1 fibers were found mainly in the striatum and frontoparietal cortex, whereas type 2 fibers were found in the posterior cingulate cortex and dentate gyrus of the hippocampal formation. Both types of aberrant fibers were seen in amygdala, frontoparietal cortex, hypothalamus, and thalamus. In 36-month-old rats, more highly degenerating arborizations were detected, and these aberrant ramifications were classified as follows based on shape as: type 3 fibers consisting of highly arborized thin fibers with a larger number of larger varicosities, and type 4 fibers consisting of thick fibers with abundant larger varicosities. Distributional difference indicated that type 1 fibers progress into type 3 fibers, whereas type 2 develop into type 4 fibers. These findings suggest the possibility that one set of pathological fibers emanate from the dorsal raphe nucleus and the other from the median raphe. Moreover, both two sets of serotonergic fibers show age-related aberrations in their morphology over same time course.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004010050939
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Immunohistochemical demonstration of serotonin-containing nerve fibers in the hypothalamus of the monkey, Macaca fuscata (1984)
    Springer
    Cell & tissue research 236 (1984), S. 495-503 
    Details
    ISSN: 1432-0878
    Keywords: Hypothalamus ; Serotonin ; Neuroendocrine regulation ; Monkey (Macaca fuscata) ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The distributional pattern of serotonin-containing nerve fibers in the hypothalamus of the monkey (Macaca fuscata) was analyzed with the use of the peroxidaseantiperoxidase method in conjunction with a highly sensitive and specific anti-serotonin serum. The highest concentrations of serotonin-immunoreactive varicose fibers were found in the nucleus praeopticus medialis, nucleus ventromedialis hypothalami, and the complex of mammillary nuclei (nucleus praemamillaris, supramamillaris, mamillaris medialis et lateralis). However, the nucleus suprachiasmaticus, where numerous serotoninergic fibers have been reported to occur in the rat, appeared to be almost devoid of these fibers. The infundibular stalk, and the intermediate and posterior lobes of the pituitary contained considerable numbers of immunoreactive fibers. The present study provides a morphological basis for possible clarification of the influence of serotoninergic projections on various neuroendocrine mechanisms in primates. Furthermore, an attempt was made to clarify the differences and similarities concerning the distributional patterns of serotoninergic nerve fibers within the monkey hypothalamus in contrast to the rat hypothalamus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00217216
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Immunohistochemical study on the localization of serotonin fibers and terminals in the spinal cord of the monkey (Macaca fuscata) (1983)
    Springer
    Cell & tissue research 229 (1983), S. 23-36 
    Details
    ISSN: 1432-0878
    Keywords: Serotonin fibers ; Spinal cord ; Immunohistochemistry ; Monkey (Macaca fuscata)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A modified procedure of PAP-immunohistochemistry with the use of a rabbit antiserum against serotonin was applied to investigate the pattern of serotonin-containing nerve fibers in the spinal cord of the monkey, Macaca fuscata. The majority of descending serotonin fibers in the white matter is located immediately below the pia mater in the ventrolateral funiculi. Lamina I and the outer zone of lamina II are supplied with numerous serotonin fibers. In the intermediate gray, two prominent bundles composed of longitudinal fibers, i.e., lateral and medial longitudinal serotonin bundles, were recognized at the lateral column and in the vicinity of the central canal, respectively. The motoneurons of the anterior horn are encompassed by fine networks of serotonin fibers and terminals. The results obtained from studies with the monkey spinal cord closely resemble those characteristic of the dog spinal cord as presented in a previous paper, except for portions of the lumbar level. In segments L3–L4, intercalated cell groups between the medial and lateral motor nuclei receive particularly rich inputs of serotonin fibers in the same manner as the neurons of the nucleus intermediolateralis. This peculiar finding may suggest the presence of a specialized nucleus in the anterior column of the simian and also human spinal cord.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00217878
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    Paper (German National Licenses)
    Fulltext
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