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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 236 (1982), S. 245-255 
    ISSN: 1434-4726
    Keywords: Intratumoral BCG-therapy ; Head-neck cancer ; Intratumorale BCG-Therapie ; Kopf-Hals-Karzinome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die vorliegende Arbeit befaßt sich mit dem Einfluß intratumoraler Injektionen von BCG-Zellwandpräparationen (ZWP) auf die Entwicklung von malignen Tumoren im Kopf-Hals-Bereich. In einem ersten Ansatz kommen Linie 10 Tumorzellen in Stamm 2-Meerschweinen zur Anwendung. Es zeigt sich, daß die intratumorale BCG-ZWP-Injektion zu einer totalen Tumorregression führt, eine Situation, die auch durch eine radikale Operation erreicht werden kann. Im Gegensatz zu den radikal operierten Tieren entwickeln die intratumoral mit BCG-ZWP injizierten Tiere eine tumorspezifische Immunität. In einem zweiten Tiersystem wird der Effekt einer intratumoralen BCG-ZWP-Behandlung auf die Entwicklung autochthoner Plattenepithel-Karzinome bei Kühen untersucht. In diesem Modell führt die radikale Operation in allen Fällen zur klinischen Heilung, während eine intratumorale BCG-ZWP-Therapie bei 50% der Tiere zur kompletten klinischen Heilung führt (Beobachtungszeitraum: 1 Jahr). Aufgrund der Experimente in den Tierexperimentalsystemen wird eine klinische Studie begonnen, wobei die Wirkung einer präoperativen BCG-ZWP-Injektion bei Patienten mit Plattenepithel-Karzinomen im Kopf-Hals-Bereich untersucht wird. Der Fallstudie liegen zur Zeit 24 Patienten zugrunde. Der kumulative Anteil der Patienten in kompletter Tumorremission liegt für BCG-ZWP-vorbehandelte Tumorpatienten jetzt bei 69%, für ausschließlich operierte Patienten bei 39%. Die bisherigen Life-Table-Analysen beider Therapiegruppen und das geringe Ausmaß der Nebenwirkungen von BCG-ZWP scheinen eine Fortführung der Studie zu rechtfertigen bis eine statistisch gesicherte Aussage über den kurativen Effekt von BCG-ZWP im Rahmen einer Kombinationstherapie bei Patienten mit Plattenepithel-Karzinomen im Kopf-Hals-Bereich gemacht werden kann.
    Notes: Summary The present study deals with the influence of intratumoral injections of BCG cell-wall preparations (CWP) on the development of malignant tumors in the head-neck region. Line 10 tumor cells in strain 2 guinea pigs were used in a first assay. It became evident that intratumoral BCG-CWP injection leads to total tumor regression, a situation which can also be achieved by radical surgery. In contrast to the radically operated animals, those injected intratumorally with BCG-CWP develop a tumor-specific immunity. A second animal system was used to examine the effect of intratumoral BCG-CWP treatment on the development of autochthonous squamous cell carcinomas in cows. In this model, radical surgery leads to a clinical cure in all cases, while intratumoral BCG-CWP therapy leads to a complete clinical cure in 50% of the animals (observation period: 1 year). On the basis of experiments performed with animals systems, a clinical study was initiated to examine the effect of preoperative BCG-CWP injection in patients with squamous cell carcinomas in the head-neck region. At present, the case study involves 24 patients. The cumulative percentage of patients in complete tumor remission is now 69% for BCG-CWP pretreated tumor patients and 39% for patients who underwent surgery only. The hitherto existing life-table analyses of both therapy groups and the small degree of side effects resulting from BCG-CWP seem to justify a continuation of the study until a statistically confirmed statement can be made about the curative effect of BCG-CWP within the framework of a combination therapy in patients with squamous cell carcinomas in the head-neck region.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0851
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Based on animal experiments a clinical study with BCG cell wall preparation (CWP) was developed. Patients with head and neck carcinomas stage T1/2N0–2M0 were randomized. One group received surgical treatment only and a second group received preoperative intralesional BCG-CWP. So far 12 patients have been included in each group. After 3 years the CCR (complete cancer remission) in the surgery only group was 39% and that in the preoperative BCG-CWP group, 69% (P=11%). The cumulative proportion of surviving patients was 50% in the surgery only and 73% in the BCG-CWP group (P=21%). BCG-CWP injection was followed by an increase in body temperature and a decrease in peripheral blood lymphocytes. No changes in liver, kidney, or other organ function could be observed after BCG-CWP therapy. Complications and severe secondary effects such as have been described for living BCG were not observed, and significant immunological changes have not been detected so far.
    Type of Medium: Electronic Resource
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