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  • Chemistry  (2)
  • 32.60.+i  (1)
  • Acetylcholin-Receptor-Antikörper  (1)
  • Arachnoid cysts  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 33 (1991), S. 341-345 
    ISSN: 1432-1920
    Keywords: Arachnoid cysts ; Volume measured ; Cyst growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The volumes of intracranial arachnoit cysts were measured in 136 CT scans of 86 patients. Absolute and relative cyst size was calculated. Left hemisphere and middle cranial fossa location prevailed. A slight negative correlation of relative cyst size with age (r=−0.21, NS) disappeared when analysis was restricted to the adult age group (≥20 years). After the sample was divided into two groups according to relative cyst size (cysts less than mean volume vs cysts greater than mean volume), small AC showed no correlation with age, while large AC correlated positively with age (r=0.79,P〈0.05). A subgroup of large AC appears to expand with time, while the majority of small AC remain unchanged.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1440
    Keywords: Myasthenia gravis ; Acetylcholine-receptor ; Acetylcholine-receptor antibodies ; Autoimmune disease ; Plasmapheresis ; Myasthenia gravis ; Acetylcholin-Receptor ; Acetylcholin-Receptor-Antikörper ; Autoimmunerkrankung ; Plasmapherese
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei 65 Patienten mit Myasthenia gravis (MG) wurden Antikörper gegen Acetylcholin-Receptoren (ACh-R) in der IgG-Fraktion des Patienten-Serums bestimmt (Immunpräzipitations-Assay mit125Jod-α-Bungarotoxin und menschlichem ACh-R als Antigen). Bei 91% der Patienten zeigte sich eine erhöhte Antikörper-Konzentration bis zum 500fachen des oberen Referenzbereichs. Eine Kontrollgruppe von 77 Patienten mit anderen gesicherten Autoimmunerkrankungen oder positiven Antikörpern gegen Muskulatur wies in keinem Fall erhöhte ACh-R-Antikörper-Konzentrationen auf. Damit ist der in-vitro Nachweis von ACh-R-Antikörpern ein empfindlicher und hochspezifischer Test für die Diagnostik der MG. Der Test eignet sich ebenfalls für die Verlaufskontrolle unter Therapie mit Immunsuppressiva oder Plasmapherese. Immunfluoreszenz-Untersuchung auf Antikörper gegen Muskelgewebe ist für die MG-Diagnostik weniger empfindlich und nicht spezifisch.
    Notes: Summary The sera of 65 patients with myasthenia gravis (MG) were analysed for antibodies against the nicotinic acetylcholine receptor (ACh-R) using an immunoprecipitation assay (125I-α-bungarotoxin bound to human ACh-R as antigen). In 91% of MG sera elevated antibody titers were found ranging up to 500 times reference values. A control group of 77 patients showing various autoimmunological phenomena had ACh-R antibody concentrations within the reference range. The demonstration of antibodies against ACh-R provides a sensitive and highly specific tool for the diagnosis of MG. In addition, the test is helpful in following patients under treatment with immunosuppressive drugs or plasmapheresis. Antibodies against striated, smooth, or heart muscle (indirect immunofluorescence test) are much less sensitive and nonspecific for the diagnosis of MG.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 49 (1989), S. 257-262 
    ISSN: 1432-0649
    Keywords: 32.60.+i ; 42.50.Fx
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Superradiant transitions were observed between high lying levels in Sr. The transitions react very sensitively to an external electric field. Superradiant cascades or one transition in a superradiant branching can be suppressed. The square root of the high of a superradiant pulse decreases with the second power of the electric field strength. This behaviour can be explained by calculations.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 70 (1998), S. 1120-1121 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 69 (1997), S. 1225-1226 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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