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  • 2000-2004  (2)
  • 1995-1999  (3)
  • 1960-1964
  • 2001  (2)
  • 1998  (2)
  • 1997  (1)
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  • 2000-2004  (2)
  • 1995-1999  (3)
  • 1960-1964
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  • 1
    Electronic Resource
    Electronic Resource
    Facilitation of Ca2+ Store-Dependent Noradrenaline Release After an N-Methyl-d-Aspartate Receptor Antagonist in the Rat Supraoptic Nucleus (2001)
    Oxford, UK : Blackwell Science, Ltd
    Journal of neuroendocrinology 13 (2001), S. 0 
    Details
    ISSN: 1365-2826
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We examined the role of N-methyl-d-aspartate (NMDA) receptors in the control of noradrenaline release in the supraoptic nucleus (SON) using a microdialysis method in urethane-anaesthetized rats. Local application of 0.5 mm NMDA into the SON by retrodialysis decreased noradrenaline content in the dialysate from the SON. On the other hand, MK-801, a channel blocker of NMDA receptors, or D(–)2-amino-5-phosphonopentanoic acid (AP-5), a competitive NMDA receptor antagonist, increased the basal noradrenaline content. Tetrodotoxin did not completely block the noradrenaline increase after NMDA antagonists. Infusion of Ca2+-free solution containing Ni2+ and Cd2+, or a mixture of ω-agatoxin IVA and ω-conotoxin GVIA, voltage-sensitive Ca2+ channels blockers, did not block noradrenaline increase after AP-5, but blocked noradrenaline increase after high K+. Infusion of intracellular Ca2+ blockers, thapsigargin or TMB-8, impaired noradrenaline increase after AP-5 but not that after high K+. These data are consistent with the hypothesis that activation of an NMDA receptor inhibits an intracellular Ca2+ store-dependent noradrenaline release from nerve terminals in the SON.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2826.2001.00711.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Involvement of N-Methyl-D-Aspartic Acid Receptor Activation in Oxytocin and Vasopressin Release After Osmotic Stimuli in Rats (2001)
    Oxford, UK : Blackwell Science, Ltd
    Journal of neuroendocrinology 13 (2001), S. 0 
    Details
    ISSN: 1365-2826
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The present study aimed to examine roles of N-methyl-D-aspartic acid (NMDA) receptors in oxytocin and vasopressin release after osmotic stimuli. A noncompetitive NMDA receptor antagonist, MK-801 (0.2 mg/kg body weight, i.p.), significantly decreased plasma concentrations of oxytocin and vasopressin after hypertonic saline injection (0.3 or 0.6 M NaCl, i.p., 20 ml/kg). By contrast, oxytocin release induced by injection of cholecystokinin octapeptide (20 µg/kg, i.p.) was not significantly changed by MK-801. Hypertonic saline injection increased the number of cells expressing Fos in the supraoptic nucleus and in the regions anterior and ventral to the third ventricle (AV3V) regions [the organum vasculosum of the lamina terminalis (OVLT) and median preoptic nucleus]. MK-801 decreased the number of cells expressing protein in these areas after hypertonic saline injection. A microdialysis method showed that a hypertonic saline injection (0.6 M NaCl, 20 ml/kg, i.p.) facilitated glutamic acid release in and near the OVLT. The results support the view that NMDA receptor in the AV3V region modulates in a facilitative fashion the AV3V inputs to the supraoptic neurosecretory neurones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2826.2001.00607.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Cystic lymphangioma of the scrotum (1998)
    Springer
    Pediatric surgery international 13 (1998), S. 442-444 
    Details
    ISSN: 1437-9813
    Keywords: Key words Lymphangioma ; Scrotum ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 7-year-old boy who presented with a painful left hemiscrotal mass was diagnosed with acquired lymphangioma of the scrotum. Chronic friction from a cast for Perthes' disease might have been the cause of sudden enlargement of a congenital lymphangioma of the scrotum. Magnetic resonance imaging (MRI) was useful for preoperative diagnosis and determining the extent of the scrotal lesions. Total excision of the mass leaving the overlying skin was successfully performed. The clinical significance of MRI for preoperative diagnosis and planning surgical resection of this lesion is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003830050364
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Estimation of creep crack growth rate in IN-100 based on the Q* parameter concept (1998)
    Springer
    Journal of materials science 33 (1998), S. 1555-1562 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Since the high-strength Ni-based superalloy, cast IN-100, is considered to be brittle at high temperatures, the stable creep crack growth region is limited. Therefore, technically, it is very difficult to perform creep tests and there are few experimental results on the creep crack growth behaviour of this material. We performed creep crack growth tests using Ni-based superalloy, cast IN-100, and derived the Q* parameter for this material, which characterizes the creep crack growth rate. Using this Q* parameter, we derived a law for the creep rupture life of this material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017511703462
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  • 5
    Electronic Resource
    Electronic Resource
    Poly(3-hydroxybutyrate) as an endogeneous substrate for H 2 evolution in Rhodovulum sulfidophilum (1997)
    Springer
    Biotechnology letters 19 (1997), S. 1209-1212 
    Details
    ISSN: 1573-6776
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract In the absence of an external substrate, H 2 was evolved in Rhodovulum sulfidophilum under light-anaerobic conditions, along with degradation of poly(3-hydroxybutyrate) (PHB). Cells grown with succinate as a sole carbon source accumulated only a small amount of PHB compared with that in cells grown with a multiple substrate consisting of a mixture of four organic acids. Unlike PHB-containing cells, PHB-deficient cells did not evolve H in the absence of an external substrate. Nitrogenase activity was expressed while no hydrogenase activity was detected during the incubation of PHB-containing cells. These results suggest that intracellular PHB serves as a substrate for the H evolution catalyzed by nitrogenase when an external substrate is lacking.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018437921006
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    Paper (German National Licenses)
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