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  • 1
    Electronic Resource
    Electronic Resource
    A Golgi study of the hypothalamus of Actinopterygii (1978)
    Springer
    Cell & tissue research 186 (1978), S. 475-490 
    Details
    ISSN: 1432-0878
    Keywords: Hypothalamus ; Actinopterygii ; Preoptic area ; Golgi study
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The preoptic area of a primitive actinopterygian, the polypteriform, Calamoichthys calabaricus Smithi, and of the teleost, Anguilla anguilla L., have been studied by Golgi and other neurohistological and histochemical methods. In the preoptic area two regions can be recognized: a cell rich median region and a lateral one, composed mostly of fiber systems. After Golgi staining a varied population of neurons is seen, including: (1) magnocellular neurons, endowed with a number of dendrites and an axon emerging from the main dendritic shaft; (2) lophodendritic tufted or pyriform neurons of variable morphology (often of the midget type); (3) cerebrospinal fluid contacting neurons; (4) bipolar and horizontal neurons. Of relevant interest is also the observation of commissural neurons, of a distinct precommissural nucleus, and of bipolar neurons, the axons of which course toward the ventral hypopallium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224936
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The distribution of GABA-like-immunoreactive neurons in the brain of the newt, Triturus cristatus carnifex, and the green frog, Rana esculenta (1989)
    Springer
    Cell & tissue research 255 (1989), S. 155-166 
    Details
    ISSN: 1432-0878
    Keywords: GABA-immunoreactive neurons ; Brain mapping ; Brain, vertebrate ; Triturus cristatus (Urodela) ; Rana esculenta (Anura)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The distribution of γ-aminobutyric acid (GABA) immunoreactivity was studied in the brain of two amphibian species (Triturus cristatus carnifex, Urodela; Rana esculenta, Anura) by employing a specific GABA antiserum. A noteworthy immunoreactive neuronal system was found in the telencephalic dorsal and medial pallium (primordium pallii dorsalis and primordium hippocampi) and in the olfactory bulbs. In the diencephalic habenular nuclei there was a rich GABAergic innervation, and immunoreactive neurons were observed in the dorsal thalamus. In the hypothalamus the GABA immunoreactivity was found in the preoptic area, the paraventricular organ and in the hypothalamo-hypophysial complex. In the preoptic area of the frog some GABA-immunoreactive CSF-contacting cells were shown. In the optic tectum immunolabeled neurons were present in all the cellular layers. A rich GABAergic innervation characterized both the fibrous layers of the tectum and the neuropil of the tegmentum and interpeduncular nucleus. In the cerebellum, in addition to the Purkinje cells showing a variable immunopositivity, some immunoreactive cell bodies appeared in the central grey. Abundant immunolabeled nerve fibers in the acoustico-lateral area and some immunopositive neurons in the region of the raphe nucleus were observed. In conclusion, the GABAergic central systems, well-developed in the amphibian species studied, were generally characterized by close similarities to the pattern described in mammals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00229077
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A Golgi study on the hypothalamus of amphibia (1977)
    Springer
    Cell & tissue research 178 (1977), S. 341-354 
    Details
    ISSN: 1432-0878
    Keywords: Neuronal typology ; Amphibia ; Hypothalamus ; Golgi technique
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The neuronal typology in the hypothalamus of the frog and the crested newt was studied by the Golgi technique. In the newt, piriform, multipolar or cerebrospinal fluid (CSF)-contacting neurons of relatively primitive type, according to the classification of Ramón-Moliner, are encountered in the preoptic area. Moreover, magnocellular neurons are impregnated. In the frog the preoptic area shows a more varied typology. The posterior hypothalami of the frog and the newt exhibit mainly bipolar CSF-contacting and piriform neurons. These latter are generally “tufted”, but some bipolar of multipolar cells are encountered, especially in the frog. The simple anatomical organization of the amphibian hypothalamus corresponds well with the pattern of a “generalized” integrative area where multimodal sensory inputs converge — including visceral information from cerebrospinal fluid by means of hypothalamic CSF-contacting sensors — to regulate the neuroendocrine outflow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00218699
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The hypothalamus of Lacerta sicula R. (1983)
    Springer
    Cell & tissue research 230 (1983), S. 387-400 
    Details
    ISSN: 1432-0878
    Keywords: Preoptic area ; Golgi method ; Lacerta sicula ; Reptilia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary An analysis of the preoptic area of the lizard, Lacerta sicula R., with the use of the Golgi method revealed that: 1)in principle, the dendritic pattern of its neurons is relatively simple; 2) the supraoptic nucleus contains large- to medium-sized bipolar or multipolar neurons together with small, usually multipolar nerve cells; 3) the preoptic periventricular gray and the paraventricular nucleus exhibit a varied neuronal typology, including large multipolar or bipolar elements, abundant CSF-contacting neurons, and some tufted elements; and 4) the lateral regions display some conspicuous multipolar neurons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00213812
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    Paper (German National Licenses)
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