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  • 1
    ISSN: 1436-2813
    Keywords: subrenal capsule assay ; esophageal cancer ; cyclophosphamide pretreatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In order to suppress the host immune reaction in subrenal capsule assay (SRCA) using normal immunocompetent mice, the effects of cyclophosphamide (CPM) pretreatment were compared to those obtained after cyclosporine A (CSA) treatment. CPM and CSA suppressed the host reaction until day 6 and day 12, respectively, however, the histological evaluation of the tumors on day 6 revealed no differences between the two groups. The cytotoxity of CPM in mouse serum against P388 cells was measured to evaluate the residual activity of CPM against the implanted tumor. No cytotoxicity was observed in the serum 36 hours after the CPM injection. In the histological analysis of clinical samples, inflammatory infiltration was observed in only 4 of 25 samples and tumor cell preservation recognized in 27 of 28 samples. A persistence of tumor cells was recognized in the samples rich in tumor cells. Adequate growth of the tumor in the control groups was obtained from 30 of 33 tumors (91 per cent), and the response rates of this assay were comparable to those of prior clinical experiences on each of these drugs. These results indicated the feasibility of SRCA with CPM pretreatment as a predictive test of chemotherapeutic agents for esophageal cancer.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 421 (1992), S. 41-45 
    ISSN: 1432-2307
    Keywords: Spleen ; Autotransplantation ; White pulp ; Regeneration ; Rats
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The process of regeneration of white pulp in autotransplanted splenic tissue, implanted into a pocket made by the greater omentum in rats, was investigated histologically and immunohistochemically. Three days after transplantation, almost all implants were necrotic. At day 7, viable splenic tissue had gradually regenerated at the periphery of the implants. At day 10, lymphocytes accumulated around the arterioles. The accumulations resembled the periarteriolar lymphoid sheath of normal spleens in structure, but consisted mainly of B-lymphocytes, with a few scattered T-lymphocytes. However, by week 2, the localization peculiar to T- and B-lymphocytes became definite, and follicular dendritic cells were simultaneously observed in the lymph follicles. This regeneration of the white pulp in the autotransplanted spleens differed from the formation of the white pulp during ontogeny and during recovery after spleen irradiation.
    Type of Medium: Electronic Resource
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