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  • 1
    ISSN: 1420-9071
    Keywords: Liver ischemia ; hepatic function ; aminopyrine demethylation ; ATP
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Hepatic function was assessed by the aminopyrine breath test (ABT) in male Sprague Dawley rats 24 h after partial hepatic ischemia. ABT decreased progressively to 26.3 (p〈0.05) and 19.7% of dose (p〈0.05) after 90 and 120 min of ischemia, respectively. ABT at 24 h after injury was correlated to the concentration of ATP in the ischemic lobes 1 h after the onset of reperfusion (r2=0.971) but not to ALT activity in plasma at 1 h (r2=0.391). We conclude that postischemic ATP levels are a better index of subsequent hepatic function than ALT.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1920
    Keywords: Brain ; neoplasms ; Computed tomography ; cranial ; Computed tomography ; contrast enhancement ; Pituitary gland ; neoplasms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Analysis of the computed tomograms of 85 purely intrasellar pituitary adenomas documents a highly variable pattern of response to contrast enhancement. Twenty-eight of 85 adenomas exhibited homogeneously increased density. Twenty exhibited heterogeneously increased, patchy or ringlike density; 16, hypodensity; and 8, isodensity with normal pituitary tissue. In 13 patients the predominant CT finding was an empty sella with variable enhancement of the adenoma and residual pituitary tissue. Pathological specimens demonstrated that the hypodense zones observed within pituitary microadenomas may represent pituitary necrosis, cyst, hemorrhage, intratumoral abscess, or relatively less intense enhancement than the normal surrounding pituitary tissue.
    Type of Medium: Electronic Resource
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