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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Chromatography B: Biomedical Sciences and Applications 572 (1991), S. 317-320 
    ISSN: 0378-4347
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Trends in Genetics 7 (1991), S. 109 
    ISSN: 0168-9525
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Fourteen patients suffering from acute, exacerbated atopic eczema were screened for changes in collagen I and collagen III metabolism in serum (n = 11), urine (n = 11) and skin biopsies (n = 9) before and after medium-dose ultraviolet (UV) A1 phototherapy (15 exposures of 50 J/cm2 over a 3-week period, total dose 750 J/cm2). Mature collagen I and, to a lesser extent, mature collagen III were found to be decreased after the therapy in skin samples from the irradiated patients. As markers of collagen I degradation, the cross-links pyridoline and deoxypyridoline were analysed in urine using high-performance liquid chromatography. Both cross-links were found to be mildly increased after UVA1 phototherapy, without reaching statistical significance. As markers of de novo collagen synthesis we screened for the procollagen I-carboxyterminal peptide (PICP) and procollagen III-aminoterminal peptide (PIIINP) levels in serum and skin. The ratio of PICP to PIIINP in serum dropped significantly after the UVA1 phototherapy, suggesting a different impact of UVA1 on the two collagens. These findings were paralleled by a diminished ratio of PICP to PIIINP in tissue samples. Staining for matrix metalloproteinase 1 (MMP-1) and its specific counterpart, tissue inhibitor of MMP-1 (TIMP-1), showed slight increases for both proteins by therapeutic UVA1; this was also seen in serum for TIMP-1 but not MMP-1. In our study, high-energy UVA1 doses induced changes of the skin collagens in patients with atopic eczema which are measurable by their metabolites in serum and urine.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 67 (1989), S. 707-712 
    ISSN: 1432-1440
    Keywords: Ketoconazole ; Androgens ; Inhibition of adrenal androgen secretion ; Hirsutism ; Hyperandrogenism therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of ketoconazole on adrenal androgen secretion was examined in 15 patients with elevated serum androgens. In a dose of 600 mg per day orally ketoconazole inhibited the biosynthesis of all measured androgens. The mean reduction in serum levels of dehydroepiandrosterone sulfate was 32%, of dehydroepiandrosterone 54%, of androstenedione 52%, and of testosterone 43%; mean serum levels of cortisol only fell by 19%. The reduction in serum androgen levels was first significant 24 h after beginning of treatment and persisted as long as the drug was administered. We conclude that ketoconazole inhibits adrenal androgen biosynthesis more pronouncedly than cortisol biosynthesis. This might be of clinical benefit in the treatment of hirsutism and other states of androgen hypersecretion.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1433-0385
    Keywords: Key words: Carbohydrate-deficient transferrin ; Alcohol consumption ; Squamous cell carcinoma of the esophagus ; Preoperative risk analysis. ; Schlüsselwörter: Kohlenhydratdefizientes Transferrin (CDT) ; Alkoholkonsum ; Plattenepithelcarcinom des Oesophagus ; präoperative Risikoanalyse.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung. In einer prospektiven Studie zur präoperativen Risikoerfassung der Alkoholabhängigkeit wurden 46 Patienten untersucht, bei denen eine Oesophagektomie wegen eines Plattenepithelcarcinoms durchgeführt wurde. Bei allen Patienten wurde präoperativ der Alkoholmarker kohlenhydratdefizientes Transferrin (CDT) im Serum bestimmt und mit dem Auftreten einer postoperativen Entzugssymptomatik (ja/nein) und dem postoperativen Verlauf (gut/mittel/schlecht/Tod) in Beziehung gesetzt. Für das untersuchte Kollektiv traten bei erhöhtem CDT-Wert signifikant häufiger Entzugssymptome auf (Median des CDT mit Entzug 17,0 U/l vs. ohne Entzug 10,7 U/l; p = 0,0006) bzw. fand sich bei erhöhtem CDT ein signifikant schlechterer postoperativer Verlauf (Median des CDT für mittleren/schlechten/letalen postoperativen Verlauf 14,0 U/l vs. guten Verlauf 10,8 U/l; p = 0,02). Der präoperative CDT-Wert korrelierte signifikant (p = 0,04) mit den anamnestischen Angaben über den präoperativen Alkoholkonsum (normal/erhöht/ stark erhöht). In einer multivariaten logistischen Regressionsanalyse waren CDT und präoperativer Alkoholkonsum unabhängige Parameter, die signifikant den postoperativen Verlauf bzw. Entzug vorhersagten. Für den CDT-Cut-off-Wert von 〈 15,3 U/l wurde hinsichtlich des Parameters „postoperativer Entzug eine Sensitivität“ von 71,4 % und eine Spezifität von 84,4 % berechnet. Die Bestimmung des CDT kann vor einer geplanten Oesophagektomie Patienten mit übermäßigem Alkoholkonsum sicher identifizieren.
    Notes: Summary. In a prospective study the preoperative risk of alcohol addiction was evaluated in 46 patients with squamous cell carcinoma of the esophagus. In all patients the alcohol marker carbohydrate-deficient transferrin (CDT) was measured prior to esophagectomy and correlated with the incidence of postoperative withdrawal symptoms (yes/no) and the postoperative course (good/moderate/poor/fatal). Withdrawal symptoms were more frequently observed in cases of elevated CDT values (median of CDT with withdrawal 17.0 U/l vs without withdrawal 10.7 U/l; P = 0.0006). CDT values were significantly increased in case of a complicated postoperative course (median of CDT for moderate/poor/fatal postoperative course 14.0 U/l vs good course 10.8 U/l; P = 0.02). The CDT value correlated (P = 0.04) with the patient's history of preoperative alcohol consumption (normal/increased/high). In a multivariate logistic regression analysis CDT and preoperative alcohol consumption were independent parameters to predict significantly the postoperative course and withdrawal. The sensitivity was 71.4 % and the specifity 84.4 % selecting the parameter “postoperative withdrawal” and a CDT cut-off point of 〈 15.3 U/l. CDT can effectively identify patients with high alcohol consumption prior to esophagectomy.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 337 (1990), S. 60-72 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 343 (1992), S. 72-73 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 343 (1992), S. 79-80 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Biomedical Chromatography 5 (1991), S. 122-127 
    ISSN: 0269-3879
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Reversed phase ion pair chromatography is a highly selective separation technique for the determination of free porphyrin carboxylic acids from human materials. Isocratic and gradient elution methods can be used to analyse porphyrin isomers and to establish porphyrin profiles for the biochemical diagnosis of porphyrias. Ion pair high performance liquid chromatography led to the discovery of the atypical isomers II and IV of uroporphyrin and coproporphyrin in human urine. Advantages and limitations of the ion pair technique are discussed.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Bioluminescence and Chemiluminescence 7 (1992), S. 195-201 
    ISSN: 0884-3996
    Keywords: Amerlite ; HCG ; testicular cancer ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: An enhanced chemiluminescence immunoassay for the determination of serum human chorionic gonadotropin (HCG) in specimens from oncology patients has been assessed with respect to its cross-reactivity with the free HCG ββ-subunit (HCG-β). The assay, standardized against the First International Reference Preparation 75/537, had a crossreactivity with the free β-subunit of 625% (molar basis). Therefore this assay achieves high sensitivity for the detection of either intact HCG or free HCG-β in serum of patients with seminomatous or nonseminomatous testicular cancers. Results of both assays, the in-house immunoradiometric assay (+ HCG-β) and the Amerlite HCG-60 assay, showed a close correlation (R =0.854-0.960) when serum samples from tumour patients were analyzed. Moreover, the content of free β-subunit determined in a specific HCG-β assay, could be quantitatively measured in the enhanced chemiluminescence immunoassay. Thus, this assay is suitable for oncology use, but also highlights the limitations of measuring HCG in serum samples.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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