RESUMO
Increased insulin-like growth factor (igf) signalling has been observed in breast cancer, including endocrine-responsive cancers, and has been linked to disease progression and recurrence. In particular, igf-1 has the ability to induce and promote lymphangiogenesis through the induction of vascular endothelial growth factor C (vegfc). In the present study, we analyzed serum and tumour samples from 60 patients with endocrine-positive breast cancer to determine the expression and the possible relationship of circulating igf-1, igf binding protein 3 (igfbp3), and vegfc with the presence of lymphatic metastasis and other immunohistochemical parameters. The analysis revealed a clear and significant correlation between high basal levels of igf-1, igfbp3, and vegfc and lymph node metastasis in endocrine-responsive breast cancer. In addition, expression of those molecules was significantly higher in breast cancer patients than in healthy control subjects. Those findings may enable more accurate prediction of prognosis in patients with breast cancer.
RESUMO
Vascular endothelial growth factor (VEGF) is a potent stimulator of angiogenesis, associated with unfavorable clinical characteristics in breast cancer. The aim of this study was to evaluate different angiogenic markers in endocrine-positive breast cancer patients. The authors analyzed serum and tumor samples from 71 patients with endocrine-positive operable primary breast cancer to determine the expression and the possible relationship between circulating serum VEGF levels, tumor VEGF expression, microvessel density (MVD), and other immunohistochemical parameters. Basal VEGF serum levels were significantly higher in breast cancer patients than in healthy controls. A significant correlation was observed between basal VEGF serum concentrations, microvessel density (p = 0.01) and p53 status (p = 0.004). Intratumoral VEGF expression was significantly associated with neoplastic embolization (p = 0.041) and circulating VEGF levels (p = 0.047). The results confirm that in primary endocrine-positive breast cancer serum VEGF levels are elevated and show a positive relationship with tumor VEGF and p53 overexpression.
Assuntos
Neoplasias da Mama/sangue , Proteína Supressora de Tumor p53/biossíntese , Fator A de Crescimento do Endotélio Vascular/sangue , Fator A de Crescimento do Endotélio Vascular/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/irrigação sanguínea , Neoplasias da Mama/patologia , Progressão da Doença , Feminino , Humanos , Imuno-Histoquímica , Pessoa de Meia-Idade , Células Neoplásicas Circulantes/patologia , Neovascularização Patológica/metabolismo , Receptores de Estrogênio/metabolismoRESUMO
The aim of this study was to assess the protective effect and the safety profile of amifostine in 16 esophageal cancer patients undergoing neoadjuvant chemo-radiation therapy (group A) compared to 21 matched patients (group B), treated with the same schedule without receiving amifostine, and considered as controls. Haematological and extra-haematological toxicity were evaluated according to WHO criteria and considered as result of amifostine activity. The bone marrow toxicity was globally lower in group A than in group B. We recorded 4 cases of mucosities in group B compared to 1 case in group A. amifostine-related side effects were few (2 cases of hypotension and 1 of vomiting), mild, and well controlled. In conclusion, amifostine seems to be effective and safe when used as protective agent also in esophageal cancer.
Assuntos
Amifostina/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Neoplasias Esofágicas/tratamento farmacológico , Terapia Neoadjuvante , Protetores contra Radiação/administração & dosagem , Idoso , Amifostina/efeitos adversos , Cisplatino/administração & dosagem , Terapia Combinada , Neoplasias Esofágicas/fisiopatologia , Neoplasias Esofágicas/radioterapia , Neoplasias Esofágicas/cirurgia , Feminino , Fluoruracila/administração & dosagem , Humanos , Masculino , Pessoa de Meia-Idade , Protetores contra Radiação/efeitos adversosRESUMO
The value and development of the copper and magnesium have been examined in thirty-four patients whose eighteen were affected by malignant lymphomas (9 L.H. and 9 non-H.), fourteen by solid tumors and two by acute leukemias. Our results prove clearly a manifest increase of the copper in the lymphomas' patients, especially in the Hodgkin's disease, and in none patients a decrease. Analogous trend has been found in the 71% of the patients with solid tumors. Scarcely significant are the results obtained in the acute leukemias. Contrary to copper, the values of the magnesium are nothing at all expressive for a diagnostic "dépistage"; a light increase of the metal is observed only in the 55% of the lymphomas non-H., while in the cancers the values are very variable. Our results confirm what other Authors have already referred, i.e. the copper's value is of a large aiding for the determination and the valuation of the diseases' activity in the above related conditions.
Assuntos
Cobre/sangue , Linfoma/diagnóstico , Magnésio/sangue , Neoplasias/diagnóstico , Adolescente , Adulto , Idoso , Criança , Feminino , Doença de Hodgkin/diagnóstico , Humanos , Leucemia/diagnóstico , Masculino , Pessoa de Meia-Idade , Estatística como AssuntoRESUMO
We have evaluated the activity and safety of gefitinib, a small-molecule epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor, in combination with docetaxel as first-line treatment of women with metastatic breast cancer (MBC). In total, 41 patients with MBC were enrolled in a first-line combination therapy study with oral gefitinib (250 mg day(-1)) and intravenous docetaxel (75 mg m(-2), the first 14 patients; or 100 mg m(-2), the following 27 patients, on day 1 of a 3-week cycle). Out of 41 patients, 38 received at least one cycle of therapy. There were no differences in activity or tolerability between the two docetaxel doses. G3/4 toxicities were neutropenia (49%), diarrhoea (10%), acne-like rash (5%), and anaemia (2%). Complete plus partial responses (CR+PR) were observed in 22 out of 41 patients with a 54% response rate (95% confidence interval (CI) 45-75%). The 22 patients that achieved a response following six cycles of docetaxel plus gefitinib continued gefitinib monotherapy (median duration, 24 weeks; range, 2-108+ weeks). Two patients with PR following combination therapy achieved a CR during gefitinib monotherapy. Complete plus partial responses correlated with oestrogen receptor (ER) status, since they occurred in 19 out of 27 (70%) patients with ER-positive tumours as compared to three out of 14 (21%) patients with ER-negative tumours (P=0.01).
Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/toxicidade , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Adulto , Idoso , Neoplasias da Mama/patologia , Progressão da Doença , Docetaxel , Feminino , Gefitinibe , Humanos , Pessoa de Meia-Idade , Metástase Neoplásica , Quinazolinas/administração & dosagem , Quinazolinas/toxicidade , Receptores de Estrogênio/análise , Taxoides/administração & dosagem , Taxoides/toxicidade , Resultado do TratamentoRESUMO
The aim of the study was to assess the toxicity and the clinical activity of biweekly oxaliplatin in combination with infusional 5-fluorouracil (5-FU) and folinic acid (FA) administered every 2 weeks (FOLFOX-4 regimen) in patients with advanced gastric cancer (AGC). A total of 61 previously untreated AGC patients were treated with oxaliplatin 85 mg m(-2) on day 1, FA 200 mg m(-2) as a 2 h infusion followed by bolus 5-FU 400 mg m(-2) and a 22 h infusion of 5-FU 600 mg m(-2), repeated for 2 consecutive days every 2 weeks. All patients were assessable for toxicity and response to treatment. Four (7%) complete responses and 19 partial responses were observed (overall response rate, 38%). Stable disease was observed in 22 (36%) patients, with progressive disease in the other six (10%) patients. Median time to progression (TTP) and median overall survival (OS) were 7.1 and 11.2 months, respectively. National Cancer Institute Common Toxicity Criteria grade 3 and 4 haematologic toxicities were neutropenia, anaemia and thrombocytopenia in 36, 10 and 5% of the patients, respectively. Grade 3 peripheral neuropathy was recorded in three (5%) patients. FOLFOX-4 is an active and well-tolerated chemotherapy. Response rate (RR), TTP and OS were comparable with those of other oxaliplatin-based regimens, suggesting a role for this combination in gastric cancer.