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  • Analytical Chemistry and Spectroscopy  (2)
  • Cushing's syndrome  (2)
  • 1980-1984  (2)
  • 1970-1974  (2)
  • 1955-1959
Document type
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 62 (1984), S. 855-858 
    ISSN: 1432-1440
    Keywords: Cushing's syndrome ; Pathogenesis of hypertension ; Renin angiotensin system ; Captopril
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To analyse the role of the renin angiotensin system in the pathogenesis of hypertension in Cushing's syndrome ten patients with hypercorticism (five with pituitary hypothalamic dysfunction, three with adrenal adenomas and two with adrenal carcinomas) received a single oral dose of 25 mg captopril. Mean arterial pressure was then determined at short intervals over periods of up to 240 min. Plasma renin activity (PRA) was measured immediately before the administration of captopril. Eleven patients with severe essential hypertension, who showed a comparable distribution of basal PRA values, served as a control. Patients with elevated basal PRA values (〉3 ng/ml·3 h) showed, both in the subgroup of cases with essential hypertension and in that with Cushing's syndrome, a statistically significant fall (P〈0.05−P〈0.001) in mean arterial pressure, the decrease being slightly more pronounced in essential hypertensives. On the other hand patients with normal PRA values (≦3 ng/ml·3 h) exhibited only a minor fall in mean arterial pressure reaching statistical significance (P〈0.05) only after 60 min (essential hypertension) and 180 min (Cushing's syndrome), respectively. Our results document that in patients with Cushing's syndrome the effect of captopril seems to be determined by the activity of the renin angiotensin system. Thus, in a substantial number of patients with hypercorticism, the renin angiotensin system may be an important factor in the pathogenesis of hypertension, whereas in patients with low PRA values other factors like oversecretion of mineralocorticoids may be responsible for the observed blood pressure increases.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 51 (1973), S. 1025-1026 
    ISSN: 1432-1440
    Keywords: Cushing's syndrome ; hydrocortison ; circadian rhythm ; Cushing-Syndrom ; Cortisol ; Tagesrhythmus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Wiederholte ambulante Plasmacortisolbestimmungen bei einer Patientin mit deutlichen klinischen Zeichen des Hyperkortizismus ergaben mit 16–24 µg/100 ml normale Werte. Erst ein unter standardisierten Bedingungen erstelltes Plasmacortisol-Tagesprofil erbrachte den eindeutigen Nachweis der Hypercortisolämie. Im Vergleich zu gesunden Normalpersonen liegen die Plasmacortisolspiegel der Cushing-Patientin auf einer höheren Ebene. Die physiologischen Phasen ruhender Cortisolsekretion in den Abend- und Nachtstunden fehlen. Wie bei Gesunden können wir bei diesem Fall von Hypercortic ismus, beruhend auf bilateraler Nebennierenrinden-Hyperplasie, große Schwankungen des Plasmacortisolspiegels beobachten. Der Wert wiederholter Plasmacortisolbestimmungen in der Abklärung des Cushing-Syndroms wird diskutiert.
    Notes: Summary In a patient with typical features of Cushing's disease, repeated ambulant determinations of plasma cortisol showed normal values with 16 to 24 µg/100 ml. The entire analysis of the circadian variations of plasma cortisol under standardized conditions led to the diagnosis of hypercorticism. Compared with 2 healthy subjects the patient's curve is set at a higher level. Physiological, quiet periods of cortisol secretion in late day-time do not occur. In accord to the normal, we find great variations of plasma cortisol in this case of Cushing's syndrome due to bilateral adrenal hyperplasia. The diagnostic value of plasma cortisol determinations at short term intervals in differentiating the various forms of hypercorticism is discussed.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 3 (1970), S. 777-788 
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A series of steroidal model compounds specifically designed to allow maximal as well as minimal charge localization at certain functional groups was subjected to mass spectrometric analysis. The results indicate that electron deficiency at the potentially reactive site is a prequisite for any fragmentation reaction to occur to an appreciable extent. The amount of charge density required at such a site seems to vary substantially for different types of fragmentation processes.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 16 (1981), S. 118-122 
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The mass spectra of the nicotinates of two methyl branched and one unsaturated long chain alcohol were compared with the mass spectra of the underivatized alcohols and of their trimethylsilyl ethers. It is shown that the structure of the chain is much more clearly shown by the spectra of the nicotinates than in the other spectra.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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