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  • 1
    Electronic Resource
    Electronic Resource
    Chromatographic Separation of Mixtures of Vitamin D2 Ergosterol, and Tachysterol2. (1963)
    s.l. : American Chemical Society
    Analytical chemistry 35 (1963), S. 1247-1250 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60202a010
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  • 2
    Electronic Resource
    Electronic Resource
    Systemic Effects of Vitamin D (1989)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Medicine 40 (1989), S. 71-78 
    Details
    ISSN: 0066-4219
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.me.40.020189.000443
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  • 3
    Electronic Resource
    Electronic Resource
    Vitamin D: Metabolism and Biological Actions (1984)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Nutrition 4 (1984), S. 493-520 
    Details
    ISSN: 0199-9885
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.nu.04.070184.002425
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  • 4
    Electronic Resource
    Electronic Resource
    Ontogeny of the calcium binding protein calbindin D-28k in the rat nervous system (1987)
    Springer
    Anatomy and embryology 177 (1987), S. 15-28 
    Details
    ISSN: 1432-0568
    Keywords: Ontogeny ; Nervous system ; Ca2+ ; Calcium binding proteins
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Calbindin D-28k immunoreactivity appeared at embryonal day 14 (E14) in the central nervous system as well as in the sensory organs and at E15 in the peripheral nervous system of the rat. At E14 the infundibular process of the diencephalon, cells of the posterior hypothalamus and of the dorsal thalamus were the only structures strongly immunostained in the brain, whereas neurons of the basal plate of the spinal cord, medulla oblongata and of the out-ermost layer of the cerebral cortex were only faintly labeled. Calbindin positive cerebellar Purkinje cells could be discerned at E15 together with a few cells in the hippocampus and in ganglia of the cranial nerves. At E19 various mesencephalic and metencephalic structures, spinal ganglion cells and basal ganglia displayed calbindin immunoreactive cells. The adult pattern of calbindin immunoreactivity (Garcia Segura et al. 1984) was reached before birth in most brain regions. In general, cells which displayed calbindin during brain development were also calbindin positive in the adult animal. Exceptions to this rule were cells of the deep nuclei of the cerebellum and non-neuronal cells which transiently expressed calbindin during development. Calbindin appeared in a given brain region almost invariably 1 or 2 days after the cessation of cell division and the beginning of neuronal migration and extension of neuronal processes. The calcium binding protein calbindin might influence these Ca2+-dependent processes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00325286
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  • 5
    Electronic Resource
    Electronic Resource
    Calbindin immunoreactivity alternates with cytochrome c -oxidase-rich zones in some layers of the primate visual cortex (1986)
    [s.l.] : Nature Publishing Group
    Nature 323 (1986), S. 715-717 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The basic biochemical function of the vitamin D-induced calcium-binding protein4 calbindin is to bind calcium intracel-lularly and to act as an enzyme activator5 or as a buffer or shuttle of this cation6. Its physiological function is unknown, but studies in the rat hippocampus have demonstrated an ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/323715a0
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  • 6
    Electronic Resource
    Electronic Resource
    Vitamin-D-dependent calcium-binding-protein and parvalbumin occur in bones and teeth (1984)
    Springer
    Calcified tissue international 36 (1984), S. 129-130 
    Details
    ISSN: 1432-0827
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary Vit-D-Dependent calcium binding protein and parvalbumin have both been detected in ameloblasts and calcified cartilage by immunohistochemical techniques. These two Ca2+ binding proteins may play a crucial role in the local accumulation of Ca+2 ions during the process of mineralization. The mechanisms underlying the deposition of inorganic substances in bone and teeth during physiologic calcification are still the object of intense debate [1,2]. The hypotheses concerning the factors controlling the initiation of mineralization can be subdivided into three large categories: enzymatic (or non-enzymatic) local elevation of phosphate and calcium [3,4,5,6,7], enzymatic removal of inhibitors of calcification [8] and direct nucleation of CaPO4 crystals on collagen fibrils [9]. In support of the first line of thought we report here the simultaneous occurrence of two different very high affinity Ca2+ binding proteins [vitamin-D-dependent CaBP=VD CaBP and parvalbumin=PV] in bones and teeth. During the studied age period and with immunohistochemical methods, we detected the proteins only in calcified cartilage of bones and in ameloblasts of teeth. We propose that VDCaBP and PV help increase the Ca2+ concentration at the calcification front in some regions involved in mineral deposition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02405306
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  • 7
    Electronic Resource
    Electronic Resource
    Oscillatory behavior of control-systems of calcium homeostasis in chickens (1994)
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 56 (1994), S. 236-244 
    Details
    ISSN: 0730-2312
    Keywords: diurnal cycles ; Zeitgeber ; vitamin D ; bone ; hydroxylase ; renal cells ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Computer simulation of calcium homeostasis in chicks predicted an oscillatory behavior of bone calcium flow and kidney 25-hydroxyvitamin D3-1 hydroxylase with a periodicity of 56 h and a 9 h phase difference between the two signals. In growing chickens subjected to a light: dark cycle of 22:2 h, and intravenously dosed with 45Ca, the temporal changes in plasma 45Ca could be described by an exponential decline with superimposed diurnal oscillations. The activity of the renal 25-hydpoxyvitamil D3-1-hydroxylase in chicks subjected to a 12:12 h light: dark cycle ALSO followed diupnal oscillations, with a ladir at the beginning of the light period and a peak 12 h later. The production of 1,25-dihydroxyvitamin D3 by primary cultures of chicken kidney cells mscillated with a periodicity of 5.6 h or shorter. It is suggested that despite the differences in phase and periodicity between the simulation predictions and actual results, the oscillations in both 1-hydroxylase and bone calcium flow could be coupled through the hormonal systems involved in regulation of plasma calcium.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcb.240560218
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