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- Trope, C., et al.
(författare)
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Human malignant melanoma heterotransplanted to nude mice
- 1981
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Ingår i: Neoplasma. ; 28:5, s. 585-591
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Tidskriftsartikel (refereegranskat)abstract
- Five different human malignant melanoma were heterotransplanted subcutaneously to nude mice. When small tissue pieces were used 3 out of 5 tumors grew. Subcutaneous injections of suspended tumor cells were also made, but all failed to take. Metastatic or infiltrative growth was never seen in the mice observed for up to 2.5 months. The successful grafts largely retained the original morphological features. The three successfully transplanted tumors could all be serially transfered with 100% tumor take. In one case passage time was reduced from 40 days to 15 days. As measured with 3H-thymidine incorporation the proliferation rate increased during the passages. These changes might be due to a selection of more rapidly growing tumor cells in the nudes.
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| 4. |
- Löfberg, H, et al.
(författare)
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The cerebrospinal fluid and plasma concentrations of gamma-trace and beta2-microglobulin at various ages and in neurological disorders
- 1980
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Ingår i: Journal of Neurology. - 0340-5354. ; 223:3, s. 70-159
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Tidskriftsartikel (refereegranskat)abstract
- The concentrations of gamma-trace and beta2-microglobulin in cerebrospinal fluid (CSF) and plasma were determined in 64 individuals of various ages without signs of organic disorder in the central nervous system (CNS). A strong connection was found between the CSF level of gamma-trace and the age of the individual, with the CSF level of newborns being 3--4 times that of adults. A similar, but less marked, connection was found for the CSF level of beta2-microglobulin and the age of the individual. The plasma levels of the two proteins also varied with the age of the individual, but the variations were not as great as those of the CSF levels. The results strongly emphasize the necessity of using age-matched reference values when CSF and plasma levels of the proteins are to be evaluated in different groups of patients. Thirteen children and 98 adults with various neurological disorders were also examined. Significantly increased CSF levels of gamma-trace and beta2-microglobulin as well as increased plasma concentration of gamma-trace and CSF/plasma gradient of beta2-microglobulin were found in infectious disorders. Increased gamma-trace concentration in plasma and beta2-microglobulin concentration in CSF were seen in cerebrovascular disorders. The mechanisms which regulate the turnover of proteins in CSF are discussed.
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