Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0027627 (metastases)
 103,950 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

One hundred and fourty-nine axillary lymph node metastases of 35 female patients with invasive breast carcinomas were investigated immunohistochemically for their estrogen receptor (ER)-status. In addition, proliferative activity of the metastatic deposits was determined with the monoclonal antibody Ki-67. Twenty-four primary tumours were ER+ and 11 ER-. Lymph node metastases were ER+ in 21 of the 24 cases where the primary tumour was ER+. In 10 of the 11 cases with ER- primary tumours, the metastases were also ER-. In any given case, the lymph node metastases proved to be either all ER+ or all ER-. Negative ER-status was found to be related to higher numbers of axillary node metastases and higher maximum proliferative activity of the metastatic tumours. Follow-up at 2 years after diagnosis revealed a significantly lower incidence of distant metastases in patients with ER+ primary tumours.
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PMID:[Biological significance of estrogen receptor status in axillary lymph node metastases of invasive ductal breast cancers]. 285 Apr 8

The impact of adding "low-dose" continuous prednisone (7.5 mg daily) to an adjuvant cyclophosphamide-methotrexate-5-fluorouracil chemotherapy regimen was investigated in a randomized trial of 505 pre- and perimenopausal patients with operable breast cancer and one to three axillary lymph node metastases (Ludwig Breast Cancer Study I). As a consequence of lower hematological toxicity a significantly higher dose of cyclophosphamide-methotrexate-5-fluorouracil could be administered with added prednisone (P less than 0.0001). However, at a median followup of 48 months, no improvement in terms of disease-free survival (P = 0.35) or overall survival (P = 0.73) was observed. Induced amenorrhea was associated with a longer disease-free survival for younger patients, patients who received lower cyclophosphamide-methotrexate-5-fluorouracil doses and patients with estrogen receptor-positive tumors. It is suggested that the chemotherapy regimen with or without prednisone may also influence tumor growth by suppression of ovarian endocrine function.
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PMID:A randomized trial of adjuvant combination chemotherapy with or without prednisone in premenopausal breast cancer patients with metastases in one to three axillary lymph nodes. 286 95

The estrogen receptor content in metastases of gynecological tumors was analyzed with an immunocytochemical technique in material obtained by fine-needle aspiration. Eighteen patients with metastasis from ovarian (10 cases), endometrial (4 cases), and uterine cervical (4 cases) carcinomas were studied. Three metastases showed specific nuclear staining for estrogen receptors and they originated from primary tumors in the ovary, the cervix, and the endometrium. Thus needle aspirates can be used for cytomorphologic diagnosis as well as determination of estrogen receptors and their use has potential value when a decision must be made between hormonal therapy or chemotherapy in patients with generalized gynecological carcinomas.
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PMID:Estrogen receptors in fine-needle aspirates from metastatic lesions of gynecologic tumors. 292 Sep 59

As previously reported, ovarian epithelial carcinomas may respond to endocrine therapy. We examined the direct effect of progesterone, medroxyprogesteroneacetate, gestoneron, 17-beta-estradiol, tamoxifen, 4-OH-tamoxifen, or N-desmethyltamoxifen on the proliferative capacity of ovarian carcinoma cells by means of the colony assay described by Hamburger and Salmon. The growth rate of 25 tested tumors (ascitic fluid, primary tumor, metastases) was 68%. The plating efficiency was 0.078%. Beside the drug testing estrogen and progesterone receptor levels were determined. The inhibition of colony survival was slightest with 17-beta-estradiol, more pronounced with medroxyprogesteroneacetate, gestoneron, N-desmethyltamoxifen, and progesterone, and greatest with 4-OH-tamoxifen and tamoxifen. Significant and dose-dependent inhibition of greater than 70% was observed with tamoxifen and 4-OH-tamoxifen in 80% of the tested tumors. There was no significant correlation between the in vitro responsiveness and the level of hormonal act not only via an estrogen receptor but also via an antiestrogen-binding site.
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PMID:In vitro responsiveness of ovarian epithelial carcinomas to endocrine therapy. 293 76

Testosterone is a known estrogen precursor especially in postmenopausal women. Tamoxifen, an anti-estrogen, is used in the treatment of women with breast cancer in whom metastatic disease has been demonstrated. The action of Tamoxifen is thought to be to occupy the intracellular estrogen receptor sites in target tissues and thus block the action of the biologically active estrogen, estradiol. Effects of Tamoxifen on the production and metabolism of hormones have been postulated. We studied the kinetics of testosterone metabolism by the constant infusion of 3H-testosterone in six postmenopausal women with breast cancer prior to and during Tamoxifen therapy. The Tamoxifen did not produce any significant change in the metabolic clearance rate, the plasma concentration or the calculated blood production rate of testosterone. The only significant alteration in the conversion ratio of testosterone to metabolites was the reduction (p less than 0.02) in conversion to 5 alpha-dihydrotestosterone. A significant reduction in the plasma concentrations (p less than 0.05) of dehydroepiandrosterone and of luteinizing hormone (p less than 0.02) was found. Other steroid and peptide hormones did not show any significant changes. We conclude that Tamoxifen therapy has very little effect on the kinetics of testosterone metabolism in postmenopausal women with metastatic breast cancer.
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PMID:Effects of tamoxifen on testosterone metabolism in postmenopausal women with breast cancer. 293 65

Because of its rare occurrence in the human, the endocrinologic and receptor-related aspects of an uterine leiomyosarcoma (LMS) are poorly understood when compared to what is known of, say, human endometrial cancer. Thus, to increase our understanding, we have succeeded, by the string method, in inducing an uterine LMS in the mouse and have studied the possibility of hormonal therapy as a method of treatment. The findings of our study are enumerated as follows: 1. The induced uterine LMS had an estrogen receptor, which was confirmed by a biochemical assay and, morphologically, by a PAP (the peroxidase anti-peroxidase technique); 2. The growth of this tumor was significantly inhibited by MPA (medroxyprogesterone acetate) therapy (100 mg/kg); 3. After MPA therapy, the estrogen receptor levels were increased, especially in the nucleus; and, 4. The growth of a secondary tumor, transplanted after the initial hormone therapy, was not inhibited by the readministration of MPA. Our results suggest that this experimentally-induced uterine LMS in the mouse provides a useful means to study therapeutic treatment, and may assist in furthering our understanding of human uterine LMS and lead to finding an effective therapy.
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PMID:[Experimental study of the treatment of uterine leiomyosarcoma in the mouse with progestogen]. 297 92

Ninety-eight patients treated for breast carcinomas were followed from 54 to 75 months after primary diagnosis. All had undergone a modified radical mastectomy with removal of axillary lymph nodes. 36 breast carcinomas were NSE-positive and 62 were negative. NSE-positive tumours were significantly more frequently estrogen receptor-positive than the NSE-negative tumours, and the estrogen receptor values were higher in the NSE-positive groups. Patients with NSE-positive tumours and patients with NSE-negative tumours did not differ with regard to presence of lymph node metastases at the time of primary surgery. However, the study showed that patients with NSE-positive tumours had a tendency towards more lymph node metastases after primary surgical intervention, but a better outcome than patients with NSE-negative tumours and metastases. This study, with a 5-year follow up, failed to demonstrate any major prognostic significance of immunostaining for NSE.
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PMID:Neuron specific enolase-positive breast carcinomas. 298 Feb 14

The results of conservative operations for breast cancer in 1,593 patients treated at the Cleveland Clinic between 1957 through 1975 are reported. During this period, we individualized our treatment of breast cancer depending on tumor size, location in the breast, and clinical stage of the disease. The following three principal operations were performed: modified radical mastectomy in 592 patients (37%), simple (total) mastectomy in 442 patients (28%), and partial (segmental) mastectomy in 291 patients (18%). Survival results at 5, 10, and 15 years are reported. Factors important in long-term survival included stage of the disease, number of lymph node metastases, delay in therapy, size of the tumor, histologic type, and estrogen receptor status; type of operation was not a significant factor. In this series, partial (segmental) mastectomy without radiation therapy provided five- to 15-year survival rates equal to modified radical mastectomy and simple (total) mastectomy.
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PMID:Results of conservative operations for breast cancer. 298 82

One hundred and fifty patients with breast carcinoma were examined to compare axillary node status, estrogen receptor level and cellular DNA content as prognostic indicators. Seventy-four per cent of the patients were postmenopausal and forty per cent had axillary node metastases. Estrogen receptor was measured by isoelectric focusing in polyacrylamide gel. DNA was measured in individual cell nuclei by means of Feulgen-acriflavine-sulphate stained imprints. Fifty-two per cent of the tumors had diploid and/or tetraploid DNA pattern, and the rest aneuploid pattern. Axillary node metastases, aneuploid DNA pattern and low level of estrogen receptor were related to recurrence. When introduced into Cox's proportional hazards procedure, axillary nodes and estrogen receptor level but not DNA pattern remained as significant predictors of recurrence.
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PMID:DNA distribution, cytosol estrogen receptors and axillary nodes as prognostic predictors in breast carcinoma. 299 76

Cancer of the breast is the most common tumor in females in Singapore, with the rate of 20.7 per 100,000 per year (1977 estimate), which is predicted to increase to 29.8 per 100,000 women per year by 1995. A detailed histopathologic review of 50 primary breast cancer tumors analyzed for estrogen receptor (ER) level was carried out and a variety of morphologic features correlated with ER results to identify any factors that will improve the management and prognosis for breast cancer. Cytosol was incubated with 3H-estradiol in the presence and absence of cold diethylstilbestrol, and bound and free hormone were separated by Dextran-coated charcoal method. Tumors binding more than 5 fmol/mg cytosol protein were classified as ER-positive. Progesterone receptor (PR) level was analyzed in some specimens with the use of a similar method. Most of the patients were Chinese (90%). Three patients were Malays, one was Indian, and one was European in this series. Results indicated that there was strong correlation between ER level, age, and histologic grade of the tumors. No correlation existed between absence or presence of lymph node metastases and ER. Although there was a trend for ER-positive tumors to have a low-grade lymphocytic infiltration, the difference was not statistically significant.
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PMID:Correlation of steroid receptors with histologic differentiation in mammary carcinoma. A Singapore experience. 299 51


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