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Objective: To study the possible correlations between the preoperative CA15.3 serum levels and the cellular proliferation, measured by S-phase (SP), in patients having infiltrating ductal carcinomas (IDC) of the breast, Material and Methods: The study group included 79 patients with an age ranged between 39 and 86 yrs (64,8 +/- 11,8). Ploidy and S-phase were measured by cytometry (Fascam. Beckton Dikinson. USA) in fresh samples, Results: Using as cut-off for SP the value of 7 %, which represents the median obtained previously in 321 patients with IDC (r: 0,8-51,2; 9,3 +/- 7,9; percentiles 25 y 75; 4,3 y 11,8 %), we can observed that the antigenic levels were higher (p:0,015) in the tumors with low SP. These same behavior was noted when 30U/ml was used as cut-off for CA15.3. Likewise, the levels of the tumor marker increased significantly (p:0,007) when the SP moved from < 4,3 % to 7,1 %, to decrease later (p:0,010) when the SP value was comprised between 7,11 % and 11,8 %. The same behavior of this tumor marker in relation to the SP was noted in tumors without axillary involvement tumors, as well as in aneuploid carcinomas., Conclusion: a) Release of CA15.3 happens when SP increases to rise the 7,1 % value, to decrease later although that goes on increasing, and b) The same behaviour of this marker with the S-phase was observed in tumors without axillary involvement, as well as in aneuploid carcinomas.

Objective: To study the possible associations between preoperative serum CEA and CA15.3 levels and different clinical-biological parameters of infiltrating ductal carcinomas of the breast (IDC)., Patients and Method: Preoperative serum CA15.3 and CEA levels were determined in 255 and 224 females, respectively, having IDC. We assayed the cytosolic levels of estrogen receptor, pS2, cathepsin D and hyaluronic acid, as well as the levels of epidermal growth factor receptor in cell surfaces. Tumor size, axillary involvement (N), distant metastasis (M), histological grade (HG) and cellular S-phase (SP) were taken into account., Results: 22 IDC were positive for CA15.3 (> 40 U/ml) and they had greater global tumor size (p < 0.001), > 2 cm (p: 0.005) and distant metastasis (p < 0.001). 19 IDC were positive for CEA (> 4 ng/ml) and they had greater global tumor size (p < 0.001), > 2 cm (p < 0.001), > 5 cm (p: 0.052) and global S-phase values (p: 0.062), and were more frequently N + (p: 0.045), > 3N + (p: 0.001) and > 10N + (p < 0.001), M + (p: 0.004), HG3 (p: 0.091) and SP > 7 % (p: 0.006)., Conclusions: Our results led us to the following: In patients having IDC of the breast, preoperative serum CA15.3 levels are associated with greater tumor size and distant metastasis, while pre-treatment CEA serum levels are associated moreover with axillary involvement; we have not observed any correlation between serum levels of both antigens and the hormonal status of the tumor; these results had physiopathological interest but reduced clinical value in pretreatment breast carcinomas due to their low sensitivity of both markers. However, they are useful in the follow-up of the patients when assessing serum concentrations of both markers, since they contribute to knowing the patients' clinical status better.

Objective: To determine the expression of epidermal growth factor receptor (EGFR) in ER-negative and Pg-R negative infiltrating ductal carcinomas of the breast (IDC) and to analyze the possible relationship between the EGFR positivity and some clinico-biological parameters of tumors., Material and Methods: EGFR was measured by a single point radioligand assay in the cell surfaces of 115 ER-negative and Pg-R-negative (< 10 fmol/mg prot.) IDC. We measured also the cytosolic concentrations of pS2, cathepsin D, tissue-type plasminogen activator (t-PA) and hyaluronic acid (AH), as well as the levels of AH in cell surfaces. Tumor size, axillary involvement, distant metastasis, histological grading, ploidy and S-phase (SP) were taken account., Results: Using as cut-off for EGFR a value of 5 fmol/mg prot., we can observed that IDCs -EGFR + had greater global values of S-phase (p: 0.005) and were more frequently metastastatic (p: 0.004), SP > 7 % (p < 0.001) and SP > 14 % (p: 0.077); likewise, they were lower frequently pS2-positive (p < 0.01) and t-PA-positive (p < 0.01). During the follow up time (median 85 months), the number of recurrences was higher in EGFR-positive than in EGFR- negative tumors (14/41 frente a 1/29; p: 0.002), but there was not differences in the number of deaths by the tumor., Conclusions: 1) The EGFR-positivity in ER-negative and PgR-negative IDCs is associated with distant metastasis, greater cellular proliferation (SP), lower positivity for pS2 and t-PA and greater number of recurrences. 2) Using 10 fmol/mg prot. as cut-off, we observed the same findings, except the change in cellular proliferation. 3) Our findings support the possible use of EGFR as a prognostic parameter in those breast carcinomas.

Objective: The trefoil factor 1 (TFF1/pS2) is an estrogen-induced molecule in breast tumours. We wanted to study its expression in ER+ and PgR+ infiltrating ductal carcinomas of the breast (IDCs), and to correlate it with other clinical-biological parameters and the outcome., Material and Methods: Cytosolic pS2 levels were measured using an IRMA (CIS. Biointernational. France) in 170 tumors. Likewise we determined the cytosolic levels of cathepsin D and tissue-type plasminogen activator (t-PA), as well as the concentrations of the epidermal growth factor receptor (EGFR), erbB2 oncoprotein, CD44v5 and CD44v6 on cell surfaces. Also the tumour size, histological grade (HG), axillary lymph node involvement, distant metastasis, ploidy, DNA index and of cellular synthesis phase (SP) was taken in account., Results: The pS2-positive (> 5 ng/mg prot.) tumours showed higher concentrations of cathepsin D (p: 0.0043) and t-PA (p: 0.0089) than the pS2-negative ones. Likewise, they were less frequently HG3 (p: 0.0231), SP > 7 % (p: 0.0005) and SP > 14% (p:0.0014). During the follow-up time (r: 1-147; 50,1+/-31,7; median 37 months) the pS2-positive tumors showed a less number of recurrences (5/101 vs 6/69; p: 0.059) but not of deaths by the tumor (1/101 vs 2/69)., Conclusions: These results support an inverse relationship between pS2 positivity and cellular proliferation in IDCs and suggest a new role of this protein (different of the hormone dependence) in the biology of these breast carcinomas, while further studies will be required to establish the impact of this finding on their outcome.

Background and Objective: We decided to study the axillary lymph node invasion (N) in hormone-independent breast cancer., Patients and Method: The study group included 77 ER and 47 ER/PgR breast carcinomas. Both ER and PgR were determined using EIAS from Abbott (USA)., Results: In ER tumors, one the most important finding was the high concentration (p = 0.001) and percentage of positives ( > 50 pmol/mg prot.; 24/41 vs 7/36; p < 0.01) of cathepsin D observed in N+ vs N- tumors. In ER/PgR negative tumors, lymph node involvement was associated with a same behavior of this proteinase (p = 0.021; 17/31 vs 2/16; p = 0.006) exclusively., Conclusions: Our results point to a possible usefulness of cathepsin D in this type of carcinomas.

Background: There is discrepancy in the literature regarding the behavior of breast cancer in elderly women. For this reason we decided to study the possible clinical and biological differences of infiltrative ductal breast carcinoma between women over 70 years and those aged between 60 and 70 years., Patients and Method: The study group included 181 women with infiltrative ductal carcinomas (IDCs) who were referred from a breast clinic (BC) and a breast cancer screening campaign (BCS). 67 of them were older than 70 and 114 were between 60 and 70 years old. Estrogen receptors (ER), progesterone receptors (PR), pS2 and cathepsin D cytosolic levels were determined, as well as levels of epidermal growth factor receptor (EGFR) in cell surfaces. Likewise, size, axillary lymph node involvement, distant metastasis, histological grade, ploidy and cellular S-phase fraction were also considered as variables of the study., Results: IDCs in women older than 70 had greater size (p<0.001), global S-phase (p = 0.009) and number of axillary lymph nodes involved (p = 0.002). Likewise, these tumors showed more frequently distant metastasis (p = 0.001) and S-phase values >14% (p = 0.093). However, when we considered only women referred from BCS, no differences in the parameters studied between women older than 70 and those aged between 60 and 70 years were observed. When only patients coming from BC were considered, women older than 70 had a greater number of axillary lymph nodes involved (p= 0.027). Patients older than 70 years from BC showed greater size (p= 0.054) and more common distant metastasis (p= 0.075) than those from BCS. Also, patients between 60 and 70 referred from BC had tumors with greater size (p <0.001), nodal involvement (p= 0.022), number of lymph nodes involved (p= 0.022) and distant metastasis (p= 0.048) than those from BCS with the same age., Conclusions: Our results suggest that IDCs in women older than 70 years show clinical and biological features associated with a worse behaviour. However, this is only observed in women referred from BC but not in those coming from BCS. For this reason, the patient's referral site seems to be essential for the observed clinical and biological differences of breast carcinomas in the elderly.

Introduction: The tissue-specific polypeptide antigen (TPS) is an epitope of the tissue polypeptide antigen (TPA) which is defined by the M3 monoclonal antibody and is related to cytokeratin 18. Several groups have demonstrated its value as a useful parameter in the follow-up of some tumors. This work has aimed to study the TPS cytosolic levels in infiltrating ductal carcinomas of the breast (IDC) and their possible correlations with other clinical-biological parameters., Patients and Methods: The TPS was determined by means of an immunoradiometric assay (Beki Diagnostics. Sweden). Other parameters included in the study were the estrogen receptors (ER), progesterone receptors (PR), pS2, cathepsin D, tissue-type plasminogen activator (t-PA), tumor size, axillary lymph node involvement, distant metastases, histological grade, ploidy and S-phase., Results: The TPS cytosolic levels ranged from 1.8 to 606.3 KU/mg prt. (median 110.2) and had a significant correlation with the ER (r: 0.721), PR (r: 0.287), cathepsin D (r: 0.550) and t-PA (r:0.436). The TPS positive (> 110.2 KU/mg prt.) carcinomas had higher levels of ER (p: 0.001), PR (p: 0.021), pS2 (p: 0.058), cathepsin D (p: 0.000) and t-PA (p: 0.053) than the TPS negative tumors. When the IDC were classified according to S-phase values, we observed that the positive cases (S-phase > 8.1%, which represents the median value of all carcinomas) had lower levels of TPS (p: 0.046) than the negative tumors. Likewise, the GoG1 cellular fraction correlated positively and significantly with the TPS cytosolic levels (p: 0.000)., Conclusions: Based on our results, we suggest that there is a positive correlation between the TPS cytosolic levels and hormone-dependence parameters, as well as an inverse correlation between these and the cellular proliferation parameters. Based on the above, we consider that it is worthwhile to carry out further studies on cytosolic TPS in order to investigate its possible value as a prognostic parameter in breast carcinomas.

Background: The hyaluronic acid (HA) is a ligand of CD44 adhesion molecule. In this work, we study if the cytosolic level of this proteoglycan can modulate certain clinical-biological properties at CD44v5-positive infiltrating ductal carcinomas (IDC) of the breast., Patients and Methods: We have assayed, by a radioligand method, the cytosolic level of hyaluronic acid in 127 IDC. Likewise, cytosolic levels of estrogen receptors (ER), progesterone receptors (PR), pS2, cathepsin D and tissue.-type plasminogen activators (t-PA) have been dossified, as well as those of epidermal growth factor receptor (EGFR) at cell surfaces. The menopausal status, tumor size, axillary lymph node involvement, histological grade, ploidy and S-phase have also been taken into account., Results: HA positive (> 4800 ng/mg prt., which represents the median value obtained with 252 tumors) carcinomas had higher levels of PR (p = 0.035) and t-PA (p = 0.000), whereas HA negative showed a higher frequency of a tumor size > 2 cm (p = 0.015), aneuploidy (p = 0.015) and S-phase > 14% (p = 0.019), as well as histological grade 3 which reached statistical significance (p = 0.062), all of which were indicators of a worse behaviour and evolution., Conclusions: Our results suggest that, as it also happens with that of the cell surface, cytosolic HA levels seems to modulate certain clinical-biological features of CD44v5-positive infiltrating ductal carcinomas of the breast. Likewise, they can help us to explain the discordant results described at the literature concerning its practical value when each of them are considered separately.

From 1994 to 1995, 80 cases which belonged to 78 patients were diagnosed. The rate was 56.6 cases/100,000 inhabitants/year in 1994 and 51.2 in 1995. The ratio male/female was 2:1 for the two years. Diagnose in hospital was 73% and in health centre 27%. Acid-fast stain and/or positive culture of M. Tuberculosis (MT) and another mycobacteria were obtained in 82.5% cases. The MT resistances were about 3.6. It was usually placed in lungs in 69.2%. The 5.1% patients were positive for HIV. Only one patient died (1.8%) who suffered from a miliary form. The favorite administered treatment (78.2%) was six months with three drugs. The adenosine deaminase (ADA) was discriminate for 80% of pleuritis. The average stay was 17.6 days. Important differences in each town councils rates.