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  • 1
    ISSN: 1433-7339
    Keywords: Key words Tamoxifen ; Cytotoxic treatment ; Cellular immunity ; Breast cancer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effects and interaction of endocrine and cytotoxic adjuvant treatment on measures of cellular immunity were assessed in 41 stage I–II breast cancer patients from International Breast Cancer Study Group trials. Counts of lymphocytes and lymphocyte subsets [(T, T4, T8, B, natural killer (NK) and activated T (AT) cells] were assessed by flow cytometry immediately before adjuvant therapy at baseline and on day 1 of the 3rd cycle. Twenty-two patients received cyclophosphamide, methotrexate and 5-fluorouracil (CMF), 7 CMF and tamoxifen (TAM), and 12 TAM alone. On day 1 of the 3rd cycle the counts of total lymphocytes (P=0.003 ) and all lymphocyte subsets (P〈0.05) except AT cells were significantly lower than baseline in the CMF treatment group. There was no significant change in the CMF+TAM or in the TAM treatment group. The combination of CMF and TAM resulted in less pronounced decrease in lymphocyte and subset counts from baseline to day 1 of the 3rd cycle. It seems possible that there is an interaction between TAM with CMF that affects lymphocyte and lymphocyte subset counts during cytotoxic treatment.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1433-7339
    Keywords: Key words Hormone-refractory prostate cancer ; Carboplatin ; Prostate-specific antigen ; Palliative endpoints ; Quality of life
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To assess the efficacy of carboplatin in patients with hormone-refractory prostate cancer in terms of response rate and palliation, the Swiss Group for Clinical Cancer Research (SAKK) conducted this phase II clinical trial (SAKK 08/91). Carboplatin 400 mg/m2 was administered i.v. every 28 days to 27 patients. The prostate-specific antigen (PSA) level was monitored and compared with the clinical response. Tumour response was evaluated according to EORTC criteria. For patients with nonmeasurable disease, response was defined as the absence of progression in any tumour localization, with no increase in PSA and a decrease of at least 2 points in the WHO pain score. Selected aspects of quality of life (QL) and use of analgesics were assessed to describe patients' experience of toxicity and palliation. Only 1 patient with measurable and 2 patients with nonmeasurable disease achieved partial remission or a response according to our criteria. However, 13 of the 27 evaluable patients had some benefit from carboplatin therapy, as indicated by an improvement in performance status, reduction of pain, and stabilization of metastases. There was no clear-cut association between clinical response and PSA level. QL data suggested that carboplatin was relatively well tolerated and confirmed the clinically documented palliation. In particular, from baseline, for at least two consecutive cycles, 7 patients reported either an improvement in pain by 1 point or more on a 4-point scale (≥33%) without an increase in analgesic intake or a decrease by 50% or more in analgesic intake without an increase in pain. With the dose and schedule used in this study, carboplatin had only limited objective activity in advanced prostate cancer, but induced palliation in about half the patients.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1573-7217
    Keywords: breast cancer ; cellular immunity ; β2-microglobulin ; sIL-2r ; prognosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Objective: The association of known prognostic factors with immune cell counts and β2-microglobulin and soluble IL-2 receptor (sIL-2r) serum levels as markers of activation of the immune system was investigated in breastcancer. Methods: Two hundred thirty five operated stage I and II breast cancer patients to receive adjuvant treatment in IBSCG trials were assessed in a cross-sectional study immediately before the first treatment. Leukocytes, lymphocytes and lymphocyte subset counts, β2-microglobulin and sIL-2r serum levels were assessed as immunological parameters. Prognostic factors were tumor load, receptor status, patient characteristics, and contextual factors of the immune assessment (such as time of the day, time since surgery, type of surgery, concomitant medication, co-morbidity). Results: In an operated early stage breast cancer patient population, tumor load was not associated with immune cell counts, β2-microglobulin, or sIL-2r before adjuvant treatment. There was a pattern of association of prognostically favorable factors such as estrogen receptor (ER) positive tumor and older age with higher NK cell counts or with β2-microglobulin or sIL-2r. In addition, immune cell counts and the markers of activation of the immune system were affected by several contextual factors, such as diurnal variability, time since surgery, type of surgery, and the intake of concomitant medication. Conclusions: The association of NK cell counts and β2-microglobulin or sIL-2r serum levels with prognostically favorable factors such as ER positive tumor and older age supports the assumption that the immune system plays a role in the course of early breast cancer. The exact nature of this role requires furtherstudy.
    Type of Medium: Electronic Resource
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