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  • 1985-1989  (2)
  • 1915-1919
  • Adjuvante, perioperative Chemotherapie  (1)
  • Cell  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Development genes and evolution 195 (1986), S. 513-518 
    ISSN: 1432-041X
    Keywords: Regeneration ; Distal transformation ; Cell ; aggregation ; Cnidaria ; Hydractinia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Polyps of mature colonies of Hydractinia echinata obey the “rule of distal transformation” by regenerating heads but not stolons. However, this rule is not valid for young polyps as these regenerate stolons from proximal cut ends. Also, small cell aggregates and even small fragments excised from full-grown polyps are capable of stolon formation. Aggregates produced from dissociated cells undergo either distal or proximal transformation depending on their size, speed of head regeneration in the donor used for dissociation and the positional derivation of the cells. The latent capability of stolon formation is released under conditions that cause loss of morphogens and depletion of their sources. However, internal regulative processes can also lead to gradual proximal transformation: regenerating segments of polyps sometimes form heads at both ends and the distal pattern is duplicated. Subsequently, all sets of proximal structures, including stolons, are intercalated. In contrast to distal transformation, proximal transformation is a process the velocity of which declines with the age and size of the cell community.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1435-2451
    Keywords: Adenocarcinoma of the colon and rectum ; Adjuvant perioperative liver infusion ; Liver metastases ; Colorectales Carcinom ; Adjuvante, perioperative Chemotherapie ; Lebermetastasen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Untersucht wird beim colorectalen Carcinom die Wirkung einer perioperativen portalen Leberperfusion mit 5-Fluorouracil und Mitomycin C. Zur Zeit sind 409 Patienten auswertbar, 202 im Kontroll- und 207 im Behandlungsarm. Die bisherigen Resultate (März 87), bei einer Beobachtungszeit von 35 Monaten, zeigen im Behandlungsarm eine deutlich geringere Tendenz für Lebermetastasen (10,4% vs 6,3%), besonders auch in den Untergruppen (Colon 11,5% vs 6,8% und Dukes' C: 22,2% vs 6,9%). Entsprechend ist auch der Carcinom-Tod seltener (14,4% vs 12,1%; 15,8% vs 8,5% und 25,4% vs 15,5%). Die Beobachtungszeit ist für eine statistische Analyse noch zu kurz.
    Notes: Summary The efficacy of adjuvant, perioperative portal liver infusion with 5-fluorouracil and mitomycin C was investigated (409 patients, 202 control subjects, 207 treated). Liver metastases were detected in 10.4% of the untreated vs 6.3% of the treated patients. The median follow-up was 35 months. For the colon subgroups (excluding the rectum) and Dukes' C tumors alone, the corresponding results were as follows: 11.5% vs 6.8% and 22.2% vs 6.9%, respectively. Death from progressive cancer disease occurred in 14.4% vs 12.1% of all patients: 15.8% vs 8.5% (colon) and 25.4% vs 15.5% (Dukes' C), respectively. The follow-up time is too short for statistical analysis, however.
    Type of Medium: Electronic Resource
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