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  • 1980-1984  (3)
  • 1
    ISSN: 1432-1440
    Schlagwort(e): ACTH ; Calcitonin ; ADH ; Tumor marker ; Bronchogenic carcinoma
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary We measured basal and dexamethasone-suppressed plasma ACTH in 246 patients with bronchogenic carcinoma (105 with small-cell carcinoma); in 138 of these patients (67 with small-cell carcinoma) basal and pentagastrin-stimulated serum calcitonin was also determined. In addition, in a subgroup of 120 patients (58 with small-cell carcinoma) plasma ADH with reference to plasma osmolality was also assayed. Non-suppressible plasma ACTH was found in 45% of patients with small-cell carcinoma but only in isolated cases of large-cell carcinoma, adenocarcinoma, and squamous-cell carcinoma. Serum calcitonin was increased in 28% of patients with small-cell carcinoma but only in few patients with other tumor types. Stimulation of calcitonin by pentagastrin was ineffective. Plasma ADH was inappropriately high in 47% of patients with small-cell carcinoma. Strikingly high also was the incidence of increased ADH concentrations in patients with large-cell (40%), adenocarcinoma (46%) and squamous-cell carcinoma (29%). By measuring plasma ACTH after dexamethasone suppression and ADH with reference to osmolality, the sensitivity of these tumor markers in detecting pathological hormone secretion is markedly increased. In small-cell carcinoma the simultaneous measurement of ACTH, ADH, and calcitonin gives a high yield of positive results (74%), indicating that this set of tumor markers is a promising aid in diagnosis and therapy control.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Journal of molecular medicine 62 (1984), S. 1014-1017 
    ISSN: 1432-1440
    Schlagwort(e): Etomidate ; Cortisol ; ACTH ; Adrenal insufficiency
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary In a prospective controlled trial we studied the effect of a single induction dose of etomidate or thiopentone on the adrenocortical function in 29 patients undergoing elective surgery. During anesthesia and in the recovery period serum cortisol rose significantly in the thiopentone group only. In contrast, after induction with etomidate serum cortisol decreased and remained below the starting values throughout the study period (5 h). The differences between the two groups were significant at 120, 150, 180, 210, and 240 min after induction (p〈0.05). Moreover, plasma ACTH increased significantly more after etomidate than after thiopentone (p〈0.02) indicating relative unresponsiveness of the adrenal cortex to stimulation by endogenous ACTH. We conclude that a single i.v. bolus of etomidate (0.26 mg/kg) leads to significant adrenal insufficiency in patients without preexisting endocrine abnormalities.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1432-1440
    Schlagwort(e): Na-K-ATPase ; Cushing-Syndrom ; Na-K-ATPase ; Cushing's syndrome
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Summary The Na-K-ATPase activity of erythrocyte ghosts was increased in 6 patients with Cushing's syndrome compared with 28 control subjects (0.986±0.291 versus 0.259±0.1 µM Pi·h−1·mg−1,p〈0.001). Ouabain insensitive Mg-ATPase activity was similar in both groups. These data support the concept of an activation of the Na-pump in patients with glucocorticoid excess.
    Notizen: Zusammenfassung Bei 6 Patienten mit Cushing-Syndrom fand sich eine 3–4fach gesteigerte Aktivität der Na-K-ATPase in Erythrocytenmembranen im Vergleich zu 28 Kontrollpersonen (0.986±0.291 gegenüber 0.259±0.1 µM Pi·h−1·mg−1,p〈0.001). Die Strophan-thininsensible Mg-ATPase war bei beiden Gruppen gleich. Der Befund spricht für eine Aktivierung der Natriumpumpe an den Zellmembranen von Patienten mit Glukokortikoidexceß.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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