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  • 1
    Electronic Resource
    Electronic Resource
    Phaeochromocytoma without symptoms: desensitization of the α- and β-adrenoceptors (1988)
    Springer
    European journal of pediatrics 147 (1988), S. 121-122 
    Details
    ISSN: 1432-1076
    Keywords: α-Adrenoceptors ; β-Adrenoceptors ; Phaeochromocytoma ; Catecholamines ; Desensitization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A 16-year-old boy is described who had a relapse of a phaeochromocytoma 6 years after an initially successful tumour resection. The relapse was suspected after routine testing of urinary catecholamine excretion and was confirmed by scintigraphy with 123I-meta-iodobenzylguanidine, computed tomography and magnetic resonance imaging. The plasma norepinephrine level was 3082 pg/ml (normal 〈500 pg/ml); the plasma epinephrine level was in the normal range. Surprisingly, our patient had no symptoms, including hypertension. The density of the α- and β-adrenoceptors on circulating blood cells was decreased. Postoperatively the plasma catecholamine levels were in the normal range. Three months after surgery the adrenoceptor density was almost normal. We conclude that the absence of clinical symptoms was probably due to desensitization of the adrenoceptors. After a successful operation to treat phaeochromocytoma, long-term monitoring of catecholamines is necessary to rule out an asymptomatic relapse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00442207
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  • 2
    Electronic Resource
    Electronic Resource
    Photoelectron dynamics of the cooper minimum in free molecules (1986)
    Springer
    The European physical journal 2 (1986), S. 309-318 
    Details
    ISSN: 1434-6079
    Keywords: 33.60.Cv ; 33.80.Eh
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The general properties of the Cooper minimum in molecules are reviewed. Experimental results from synchrotron radiation together with theoretical calculations are presented on both the partial cross sections and angular distribution parameters, β. A detailed examination of HCl is used as an example. Previously unpublished results on CCl n H4−n , CCl n F4−n , ethylene dichloride, I2 and ICl are included. The Cooper minimum is largely discussed as a perturbation from atomic behavior, and is examined as a function of atomic number. The Cooper minimum is also examined as a function of chemical environment. Finally, needs for future research are briefly described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01426235
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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