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  • 1
    Electronic Resource
    Electronic Resource
    Efficacy of HSP72 induction in rat liver by orally administered geranylgeranylacetone (2000)
    Springer
    Transplant international 13 (2000), S. S278 
    Details
    ISSN: 1432-2277
    Keywords: Key words Geranylgeranylacetone ; Heat-shock protein 72 ; Liver transplantation ; Warm ischemic injury ; Ischemia reperfusion injury
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract It is well known that heat-shock proteins (HSPs) have a cytoprotective function as “molecular chaperones” when cells are exposed to several stress conditions. Geranylgeranylacetone (GGA) is an antiulcer drug that was developed in Japan and it has recently been reported to induce HSP72 in rat gastric mucosa. In this experiment, we investigated the induction of HSP72 in rat liver in response to oral administration of GGA and assessed its ability to induce tolerance to warm ischemic injury by this approach. We prepared donor rats by orally administering GGA to them and compared HSP72 expression in graft liver, survival rates, and serum TNF-α concentrations after liver transplantation with the findings in controls. The survival rates were significantly increased when the livers were obtained from donor rats given GGA. Western blotting revealed expression of HSP72 in graft livers given GGA, and the serum TNF-α levels were significantly suppressed in the rats given GGA. Oral administration of GGA induced HSP72 in graft livers, and they were better able to tolerate warm ischemic injury. Oral administration of GGA appears to provide a promising new strategy for preventing ischemia-reperfusion injury.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001470050341
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  • 2
    Electronic Resource
    Electronic Resource
    Role of chromosomal loss in the progression of prostate cancers (2000)
    Springer
    International journal of clinical oncology 5 (2000), S. 345-354 
    Details
    ISSN: 1437-7772
    Keywords: Key words Prostate cancer ; Chromosome ; Loss of heterozygosity ; Tumor suppressor gene ; Metastasis suppressor gene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Cytogenetic, molecular cytogenetic, and molecular studies of prostate cancer have produced a large volume of data about chromosomal loci that are aberrant in prostate cancer. The cumulative data on prostate cancer reveal allelic losses on chromosome arms 2q, 3p, 5q, 6q, 7q, 8p, 9p, 10p, 10q, 11p, 11q, 12p, 13q, 16q, 17p, 17q, 18q, and 21q, but there is a great deal of variability between studies. In most cases, the frequency of allelic loss is higher in metastatic tissues or hormone-refractory tumors than in primary tumors. There also seem to be discrepancies in the genetic findings depending on methods employed. Molecular genetic studies, using polymerase chain reaction (PCR) analysis of microsatellite markers, demonstrated allelic loss at 7q31.1, whereas fluorescence in situ hybridization analysis showed a gain at the same region. Com-mon sites of allelic loss that are consistently observed by various methods seem to exist on chromosome arms 8p, 10q, 13q, and 16q. PTEN/MMAC1 has been identified on 10q23.3 and was found to be frequently mutated in advanced prostate cancer. Other regions are also considered to harbor genes associated with the development and progression of prostate cancer, and these could be included in the diagnostic methods for the substaging of prostate cancer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00012062
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Value of free-to-total prostate-specific antigen ratio for detection and staging of prostate cancer (2000)
    Springer
    International journal of clinical oncology 5 (2000), S. 8-11 
    Details
    ISSN: 1437-7772
    Keywords: Key words Prostate neoplasm ; Prostate-specific antigen ; Free-to-total ratio
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background. We aimed to evaluate the clinical usefulness of measurement of the free-to-total (F/T) ratio of prostate-specific antigen (PSA) for the differentiation of prostate cancer from benign prostate hyperplasia (BPH) and for the staging of prostate cancer. Values for PSA density (PSAD) and PSAD adjusted to the transition zone volume (PSAD-T) were also evaluated in patients with mildly elevated PSA levels (4.1–10 ng/ml). Methods. Total and free PSA and the F/T ratio were determined in 80 men with prostate cancer and 48 men BPH before treatment. PSA levels were measured with a chemiluminescent enzyme immunoassay. Results. Patients with prostate cancer had a significantly lower F/T ratio than those with BPH. A cut-off value of 14% for the F/T ratio provided a positive predictive value of 81.6% and a negative predictive value of 65.4%. The F/T ratio did not differ between patients with clinically localized and metastatic prostate cancer. In patients with a PSA value of 4.1–10 ng/ml, a cut-off value of 14% for the F/T ratio provided a sensitivity of 66.7% and a specificity of 76.2%. Sixty percent of the missed cancer in patients with an F/T value of 14% or more could be rescued using the PSAD value. Conclusion. Measurement of the F/T PSA ratio has good sensitivity and specificity in distinguishing prostate cancer from BPH, especially in patients with a PSA level of 4.1–10 ng/ml. However, compared with serum PSA level, the F/T PSA ratio is not valuable for the clinical staging of prostate cancer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s101470050002
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    Paper (German National Licenses)
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