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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 120 (1994), S. S23 
    ISSN: 1432-1335
    Keywords: 7-Hydroxycoumarin ; Antitumoral activities ; Oncogene ; Transformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract 7-Hydroxycoumarin (7-HC) is a naturally occuring substance with a variety of biological activities, e.g. antitumoral and immunomodulatory action. the potential mechanisms of 7-HC action on tumor cells have been investigated in a model of mouse fibroblasts transformed by distinet retroviral vectors carrying the oncogenesmyc andras. Treatment of the different oncogenic transformants with 7-HC in non-cytotoxic concentrations causes a strong inhibition of their proliferative capacity as measured by growth curves. Furthermore, incubation of theras andmyc transformants with 7-HC abrogated soft agar colony formation when compared to untreated cultures. These changes in cell growth characteristics of the various oncogene-transformed mouse fibroblasts were transient, since removal of 7-HC from the cultures caused a reappearance of the transformed properties of these cells within 6 days. The 7-HC-mediated inhibition of the proliferative capacity of the transformants was preceded by a selective down-regulation of oncogene expression. These data suggest that 7-HC causes a reversible inhibition ofras- andmyc-induced neoplastic properties in transformed fibroblasts by selective down-regulation of retroviral RNA levels.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Rheumatology international 10 (1990), S. 135-142 
    ISSN: 1437-160X
    Keywords: Early RA ; HAQ ; SOFI ; Radiology ; Anxiety ; Depression ; Outcome ; Prognosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Eighty-nine patients, 33 men and 56 women, with early definite rheumatoid arthritis were followed for 2 years. Two-thirds were seropositive. About 1/3 were eventually treated with second line drugs. The disease mostly had an insidious onset initially involving the finger joints. Early remission occurred in 16%. Patient relevant measures such as pain, patient's overall assessment of disease activity and anxiety decreased significantly. Disability evaluated by the HAQ disability index remained at a low level. The joint damage score (JDS) in hands and feet increased steadily and only 18% were nonerosive after 2 years. One-third developed hand deformities which was associated with higher JDS. A joint function index (SOFI) correlated significantly with JDS. Twenty-eight percent had a slower rate of joint damage progression the second year. There was no significant correlation between JDS and disease duration. Six patients developed rapidly progressive damage in larger joints, five in the hip joints and one in the shoulder joint, all requiring joint replacement. The ability to predict outcomes with clinical and laboratory variable obtained at entry was of limited clinical usefulness. By applying discriminant analyses 67%–80% of the cases who fared worst regarding clinical, functional, and radiological features could be correctly classified.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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