RESUMO
A dual-phase Cr2AlC material was synthesized using magnetron sputtering at a temperature of 648 K. A stoichiometric and nanocrystalline MAX phase matrix was observed along with the presence of spherical-shaped amorphous nano-zones as a secondary phase. The irradiation resistance of the material was assessed using a 300-keV Xe ion beam in situ within a transmission electron microscope up to 40 displacements per atom at 623 K: a condition that extrapolates the harmful environments of future fusion and fission nuclear reactors. At the maximum dose investigated, complete amorphization was not observed. Scanning transmission electron microscopy coupled with energy-dispersive x-ray revealed an association between swelling due to inert gas bubble nucleation and growth and radiation-induced segregation and clustering. Counterintuitively, the findings suggest that preexisting amorphous nano-zones can be beneficial to Cr2AlC MAX phase under extreme environments.
RESUMO
The aim of the present study was to evaluate serum concentrations of vascular endothelial growth factor (VEGF) in patients with vulvar cancer and healthy female controls with respect to correlation of VEGF with clinicopathological parameters and impact on the patients' prognosis. Serum concentrations of VEGF were measured using a commercially available ELISA. Results were correlated to clinical data. Median serum concentrations of VEGF in patients with vulvar cancer (n = 41) and healthy female controls (n = 130) were 260 (range, 33-1216) pg/ml and 216 (range, 0-777) pg/ml, respectively (Mann-Whitney U test, P = 0.048). Serum concentrations of VEGF significantly correlated with tumor stage (Mann-Whitney U test, P = 0.02) but not with histological grade (Mann-Whitney U test, P = 0.2). In a univariate analysis, elevated pretreatment serum concentrations of VEGF were significantly correlated with a shortened disease-free and overall survival (Wilcoxon test, P = 0.03; and Wilcoxon test, P = 0.04, respectively). A multivariate Cox regression model considering tumor stage and serum concentrations of VEGF revealed, however, that serum concentrations of VEGF did not confer additional prognostic information to that already obtained by the established prognosticator tumor stage (multivariate Cox regression model: P = 0.9 and P = 0.8, respectively). Our data indicate that angiogenesis, as reflected by serum concentrations of VEGF, plays a functional role in vulvar carcinogenesis. VEGF seems to be a mediator of vulvar tumor growth but not of tumor cell dedifferentiation. Although associated with impaired disease-free and overall survival, pretreatment serum concentrations of VEGF are not an independent predictor of outcome in patients with vulvar cancer.
Assuntos
Fatores de Crescimento Endotelial/sangue , Linfocinas/sangue , Neoplasias Vulvares/sangue , Adulto , Idoso , Idoso de 80 Anos ou mais , Intervalo Livre de Doença , Feminino , Humanos , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Contagem de Plaquetas , Fator A de Crescimento do Endotélio Vascular , Fatores de Crescimento do Endotélio Vascular , Neoplasias Vulvares/mortalidade , Neoplasias Vulvares/patologiaRESUMO
Cytokeratins are polypeptides which constitute a subclass of intermediate filaments in epithelial cells. The serum tumour marker M3/M21 is based on monoclonal antibodies against the epitopes M3 and M21 of cytokeratin 18. In the present study, we measured M3/M21 serum levels in 50 patients with FIGO stage IB-IIB cervical cancer and in 50 control subjects using a two-site radiometric immunoassay directed against soluble fragments of cytokeratin 18. Median serum levels of M3/M21 in patients with cervical cancer and in normal controls were 70.6 U/ml (range 0-397.7) and 6.5 U/ml (range 0-205.2), respectively (Mann-Whitney U-test, P = 0.0001). Median serum levels of M3/M21 prior to therapy and 4 weeks after therapy were 104.2 U/ml (range 24.6-397.7) and 39.3 U/ml (range 0-234.7), respectively (Mann-Whitney U-test, P = 0.004). We found a significant correlation between elevated M3/M21 serum levels and metastatic disease in pelvic lymph nodes (Mann-Whitney U-test, P = 0.002). 24 patients relapsed after complete remission. In these patients, elevated M3/M21 serum levels before the detection of relapse by computed tomography was observed in 13 cases. Considering these preliminary results, further studies with an increased number of patients are justified to clarify the prognostic value and the monitoring abilities of M3/M21 in cervical cancer patients.
Assuntos
Biomarcadores Tumorais/sangue , Proteínas de Transporte/sangue , Queratinas/sangue , Neoplasias do Colo do Útero/diagnóstico , Anticorpos Monoclonais , Epitopos , Feminino , Humanos , Valor Preditivo dos Testes , Estudos RetrospectivosRESUMO
The expression of specific cell adhesion molecule CD44 isoforms (splice variants) has been shown to be associated with poor prognosis in human malignancies, such as breast cancer. We used three different variant exon sequence-specific murine monoclonal antibodies to epitopes encoded by exons v5, v6 or v7-v8 of human variant CD44, to study the expression of CD44 splice variants by immunohistochemistry in human stage III cervical cancer. We investigated 40 pretreatment punch biopsies of cervical cancer FIGO stage III. CD44 splice variants CD44v5, CD44v6 and CD44v7-8 were detected by means of immunohistochemistry in 90%, 55% and 25%, respectively. CD44 epitopes encoded by exon v5 were not correlated with prognosis. Expression of CD44 splice variants containing epitopes encoded by exon v6 were correlated with significantly poorer prognosis (Mantel test, P = 0.008). Five-year survival rates with or without CD44v6 expression were 20% versus 71%, respectively. Expression of CD44v7-8 was also correlated with significantly poorer overall survival (Mantel test, P = 0.02). Expression of CD44 splice variants containing epitopes encoded by exons v7-v8 and especially exon v6 is associated with significantly poorer prognosis in stage III cervical cancer patients.
Assuntos
Biomarcadores Tumorais/análise , Receptores de Hialuronatos/análise , Neoplasias do Colo do Útero/química , Idoso , Processamento Alternativo , Feminino , Seguimentos , Humanos , Receptores de Hialuronatos/genética , Técnicas Imunoenzimáticas , Pessoa de Meia-Idade , Prognóstico , Taxa de Sobrevida , Neoplasias do Colo do Útero/patologiaRESUMO
We investigated the expression of CD44 isoforms containing variant exons v5, v6 and v7-8 in 115 human breast cancer specimens by means of immunohistochemistry. CD44 isoforms CD44v5, CD44v6 and CD44v7-8 were detected in 56% (n = 64), 24% (n = 28) and 15% (n = 17), respectively. In 36 specimens of axillary lymph node metastasis, expression of CD44v5, CD44v6 and CD44v7-8 was found in 94% (n = 34), 92% (n = 33) and 89% (n = 32), respectively. Five year survival rates with or without CD44v5 and CD44v6 expression were 71% versus 86% (log-rank test, P = 0.02) and 62% versus 81% (log-rank test, P = 0.001), respectively. For disease-free survival, expression of CD44v5, CD44v6 and CD44v7-8 showed a prognostic impact (log-rank test, P = 0.004, P = 0.0001 and P = 0.0001, respectively). However, multivariate analysis revealed that all investigated CD44 isoforms failed to be independent predictors of the patient's outcome.
Assuntos
Biomarcadores Tumorais/análise , Neoplasias da Mama/química , Receptores de Hialuronatos/análise , Adulto , Idoso , Idoso de 80 Anos ou mais , Axila , Neoplasias da Mama/patologia , Feminino , Seguimentos , Humanos , Imuno-Histoquímica , Metástase Linfática , Pessoa de Meia-Idade , Análise Multivariada , Prognóstico , Distribuição AleatóriaRESUMO
Interleukin-1 (IL-1) is a multifunctional cytokine playing a central role in the immune response and displaying direct cytotoxic activity in vitro. Serum IL-1 alpha and beta levels were measured by enzyme linked immunosorbent assay (ELISA) in 75 ovarian cancer patients, 30 patients with benign ovarian cysts and 50 healthy controls. Both serum IL-1 alpha and IL-1 beta levels were more often elevated in ovarian cancer patients compared with healthy controls (chi-square test, P < 0.001 and P < 0.001, respectively). Mean serum IL-1 alpha and beta levels decreased significantly after surgical intervention (paired t-test, P = 0.0001 and P = 0.0002, respectively). No correlation with histopathological parameters and overall and disease-free survival was found. These preliminary results indicate that serum levels of IL-1 alpha and beta represent a host defence reaction rather than an autonomous tumour cell production.
Assuntos
Interleucina-1/sangue , Neoplasias Ovarianas/sangue , Adulto , Idoso , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/sangue , Estudos RetrospectivosRESUMO
Aberrant expression of the cell adhesion molecule CD44 has been detected in human tumours and has been shown to be associated with metastasis and poor prognosis in human malignancies. We evaluated serum levels of different soluble CD44 molecules (CD44 standard form and CD44 splice variants v5 and v6) in cervical cancer patients stage IB to IIIB. Two-hundred three serum samples were analysed. Serum levels of CD44st and CD44v5 showed no significant correlation with the presence or absence of cervical cancer. The splice variant CD44v6 showed a mean concentration of 227.3 +/- 90.9 (minimum 71.4, maximum 543.9) ng/ml when tumour was present and a mean concentration of 198.7 +/- 135.4 (minimum 67.2, maximum 696.3) ng/ml in cases of complete remission (P-value = 0.0001). However, in this preliminary study the sensitivity/specificity characteristic of CD44v6 was poor.
Assuntos
Adenocarcinoma/sangue , Biomarcadores Tumorais/sangue , Carcinoma de Células Escamosas/sangue , Proteínas de Transporte/metabolismo , Receptores de Superfície Celular/metabolismo , Receptores de Retorno de Linfócitos/metabolismo , Neoplasias do Colo do Útero/sangue , Adenocarcinoma/imunologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Processamento Alternativo , Análise de Variância , Antígenos de Neoplasias/sangue , Carcinoma de Células Escamosas/imunologia , Feminino , Humanos , Receptores de Hialuronatos , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Curva ROC , Sensibilidade e Especificidade , Estatísticas não Paramétricas , Neoplasias do Colo do Útero/imunologiaRESUMO
The influence of menstrual status at the time of surgery on the prognosis of women suffering from breast cancer is still discussed controversially. In our patient collective, including 149 patients, we obtained statistically significant results for six different time intervals, indicating that patients who underwent surgery between 11 and 22 days after the last menstrual period (LMP) have a poorer outcome. Focusing on the effect of statistical data evaluation strategy we designed a simulation study to evaluate the amount of type I error (error of a false positive test result) in a multiple testing situation involving a cyclical covariate. Accordingly, we corrected the minimum P-values for the occurring type I error rates. After that correction all six previously significant P-values failed to achieve statistical significance. The impact of different statistical data evaluation strategies in a multiple testing situation is discussed.
Assuntos
Neoplasias da Mama/cirurgia , Carcinoma Ductal de Mama/cirurgia , Carcinoma Lobular/cirurgia , Ciclo Menstrual , Adulto , Interpretação Estatística de Dados , Intervalo Livre de Doença , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Estudos RetrospectivosRESUMO
We present the data of 105 serum samples from 20 patients suffering from cervical cancer. Mean serum levels of basic fibroblast growth factor (bFGF) in patients with or without tumor present were 31.3 +/- 32.1 (minimum 0, maximum 156.7) pg/ml and 4.8 +/- 6.8 (minimum 0, maximum 29.6) pg/ml, respectively (P = 0.0001). bFGF reached a sensitivity of 65.7% at a specificity of 91.5% when applying a cut-off level of 15 pg/ml. Four patients relapsed after complete remission. A continuous increase of bFGF serum levels before the clinical detection of relapse (lead time) was seen in two cases with a mean lead time of 4 months. Preoperative serum levels were not of prognostic value and showed no correlation with pelvic lymph node metastasis. These preliminary results indicate that in cervical cancer patients soluble bFGF may be useful in early detection of primary tumors, recurrences and monitoring of therapy.
Assuntos
Adenocarcinoma/sangue , Carcinoma de Células Escamosas/sangue , Fator 2 de Crescimento de Fibroblastos/sangue , Neoplasias do Colo do Útero/sangue , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Pessoa de Meia-Idade , Projetos Piloto , Curva ROCRESUMO
HER-2/neu (c-erbB-2) oncoprotein is a transmembrane glycoprotein and may function as a growth factor receptor being involved in the regulation of cell growth and cell transformation. We performed an analysis of 100 patients with endometrial cancer stage FIGO I to IV using an immunoperoxidase technique on formalin-fixed, paraffin-embedded tissue samples in order to determine HER-2/neu oncoprotein expression. HER-2/neu oncoprotein was expressed in the tumors of 21 patients (21%). Clinical stage, histologic stage, histologic grade and death of invasion did not correlate with HER-2/neu oncoprotein expression. We found HER-2/neu oncoprotein in all clinical stages and therefore it does not seem to be a late event in the natural history of endometrial cancer. HER-2/neu oncoprotein expression was associated with poor overall survival (log-rank P-value 0.04).
Assuntos
Neoplasias do Endométrio/química , Receptor ErbB-2/análise , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias do Endométrio/mortalidade , Neoplasias do Endométrio/patologia , Estudos de Avaliação como Assunto , Feminino , Humanos , Imuno-Histoquímica , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Valor Preditivo dos Testes , Prognóstico , Estudos Retrospectivos , Coloração e Rotulagem , Análise de SobrevidaRESUMO
Microvessel density in the area of the most intense neovascularization in invasive breast carcinoma is reported to be an independent prognostic factor. The established method of enumeration of microvessel density is to count the vessels using an ocular raster (counted microvessel density [CMVD]). The vessels were detected by staining endothelial cells using Factor VIII-related antigen. The aim of the study was to compare the CMVD results with the percentage of factor VIII-related antigen-stained area using computer-assisted image analysis. A true color red-green-blue (RGB) image analyzer based on a morphologically reduced instruction set computer processor was used to evaluate the area of stained endothelial cells. Sixty invasive breast carcinomas were included in the analysis. There was no significant correlation between the CMVD and the percentage of factor VIII-related antigen-stained area (Spearman correlation coefficient = 0.24, confidence interval = 0.02-0.46). Although high CMVD was significantly correlated with poorer recurrence free survival (P = .024), percentage of factor VIII-related antigen-stained area showed no prognostic value. Counted microvessel density and percentage of factor VIII-related antigen-stained area showed a highly significant correlation with vessel invasion (P = .0001 and P = .02, respectively). There was no correlation between CMVD and percentage of factor VIII-related antigen-stained area with other prognostic factors. In contrast to the CMVD within malignant tissue, the percentage of factor VIII-related antigen-stained area is not suitable as an indicator of prognosis in breast cancer patients.
Assuntos
Neoplasias da Mama/química , Carcinoma/química , Processamento de Imagem Assistida por Computador/métodos , Fator de von Willebrand/análise , Neoplasias da Mama/irrigação sanguínea , Carcinoma/irrigação sanguínea , Feminino , Humanos , Processamento de Imagem Assistida por Computador/instrumentação , Processamento de Imagem Assistida por Computador/estatística & dados numéricos , Imuno-Histoquímica , Microcirculação/química , Microcirculação/patologia , Neovascularização Patológica/patologia , PrognósticoRESUMO
OBJECTIVE: To determine the value of serum soluble Fas levels as a prognostic marker for survival of women with ovarian cancer and as a discriminator between benign and malignant adnexal masses. METHODS: Serum soluble Fas levels were measured with an enzyme-linked immunosorbent assay in 52 women with ovarian cancer, 30 women with benign ovarian cysts, and 35 healthy women. RESULTS: Median serum soluble Fas levels in women with ovarian cancer, women with benign ovarian cysts, and healthy women were 3.7 (range 1.6-14.5), 2.3 (range 1.3-4.1), and 1.5 ng/mL (range 0.1-5.6), respectively (P <. 001). A univariate logistic regression model showed a significant influence of serum soluble Fas and CA 125 levels on the odds of presenting with ovarian cancer versus benign cysts (P <.001 and P =. 001, respectively). In a multivariable logistic regression model for soluble Fas and CA 125, both markers showed a statistically significant influence on the odds of presenting with ovarian cancer versus benign cysts (P =.01 and P =.01, respectively). Increased pretreatment serum soluble Fas levels were associated with shortened disease-free and overall survival (P =.002 and P =.001, respectively). A multivariable Cox regression model identified serum soluble Fas levels as a significant prognostic factor for disease-free and overall survival, independent of tumor stage (P =. 04 and P =.03, respectively). CONCLUSION: Soluble Fas levels might be useful as a discriminator between benign ovarian cysts and ovarian cancer, adding to the information obtained with the use of the established tumor marker CA 125. Pretreatment serum soluble Fas levels also might be an independent prognostic factor for disease-free and overall survival.
Assuntos
Biomarcadores Tumorais , Neoplasias Ovarianas/diagnóstico , Receptor fas/sangue , Adenocarcinoma Mucinoso/diagnóstico , Adulto , Idoso , Cistadenocarcinoma Seroso/diagnóstico , Intervalo Livre de Doença , Feminino , Humanos , Modelos Logísticos , Pessoa de Meia-Idade , Cistos Ovarianos/diagnóstico , Neoplasias Ovarianas/mortalidade , Prognóstico , Modelos de Riscos Proporcionais , Curva ROC , Estudos RetrospectivosRESUMO
OBJECTIVE: To evaluate the prognostic importance of preoperative CA 125 levels in patients with International Federation of Gynecology and Obstetrics (FIGO) stage I epithelial ovarian cancer in comparison with the established prognostic factors: degree of differentiation, FIGO substage, and age. METHODS: In a retrospective analysis, the traditional prognostic factors and CA125 levels (cutoff value 65 U/mL) were studied in 201 patients who were treated in five centers during 1984-1993. Patients with borderline tumors or non-epithelial ovarian carcinomas were excluded, as were women in whom CA 125 had not been determined preoperatively. RESULTS: In univariate analysis (Mantel test), overall survival decreased significantly in patients positive for CA 125 (P < .001). Substage (P = .004) and histologic grade (P = .01) also significantly influenced survival prognosis. When the effects of preoperative CA 125 levels were correlated with histologic grade, all three subgroups with CA 125 levels equal to or greater than 65 U/mL were associated with a decreased survival probability (grade 1, P = .04; grade 2, P = .003; grade 3, P = .01). Multivariate analysis (Cox model) identified preoperative CA 125 as the most powerful prognostic factor for survival (P < .001), the risk of dying of disease being 6.37 times higher (95% confidence interval 2.39-16.97) in CA 125-positive patients. Although FIGO substage retained its significant influence on survival (P = .03), histologic grade and age were not prognostically important. CONCLUSION: Randomized trials investigating the efficacy of adjuvant treatment in patients with FIGO stage I epithelial ovarian cancer should also include stratification by preoperative CA 125 levels.
Assuntos
Biomarcadores Tumorais/sangue , Antígeno Ca-125/sangue , Neoplasias Ovarianas/mortalidade , Fatores Etários , Feminino , Humanos , Tábuas de Vida , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Neoplasias Ovarianas/sangue , Neoplasias Ovarianas/patologia , Neoplasias Ovarianas/cirurgia , Prognóstico , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Análise de SobrevidaRESUMO
OBJECTIVE: To determine the prognostic effect of intratumor microvessel density in a series of unselected patients with endometrial carcinoma. METHODS: We reviewed 93 consecutive patients treated surgically for endometrial cancer at the University Hospital of Vienna between 1983 and 1989. Histologic sections were obtained from original paraffin-embedded blocks and stained immunohistochemically for CD34 antigen. Microvessel density was determined by enumeration of intratumor CD34-positive cells under a light microscope at 200 x magnification using an examination area of 0.74 mm2. Log-rank test and Cox proportional-hazards models (univariate and multivariate) were applied for overall survival analysis. RESULTS: Overall, the 25% quantile of survival was reached at 37.9 months. The 5-year survival rate was 82.2% in 69 patients whose tumors had microvessel counts no more than 100/0.74 mm2 field, and 52.0% in 24 patients whose tumors had microvessel counts of more than 100/0.74 mm2 field (log-rank P = .004). In the multiple Cox model, high microvessel counts (relative risk [RR] 1.2; 95% confidence interval [CI] 1.1, 1.4) as well as undifferentiated tumors (RR 6.1; CI 2.2, 16.8), and advanced stage of disease (RR 2.6; CI 1.3, 5.1) independently exerted an adverse influence on the survival of patients with endometrial cancer. CONCLUSION: High intratumor microvessel count is associated with poor survival of patients with endometrial cancer.
Assuntos
Neoplasias do Endométrio/mortalidade , Neoplasias do Endométrio/patologia , Neovascularização Patológica , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Prognóstico , Taxa de SobrevidaRESUMO
OBJECTIVE: To measure the serum levels of interleukin (IL)-8, prostaglandin (PG) F2alpha, and beta-endorphin in parturients with acupuncture treatment and in controls to clarify the effect of acupuncture and duration of labor on the serum levels of substances active in cervical ripening and dilatation. METHODS: A matched pair study was performed involving 80 women with and without prenatal acupuncture treatment, matched for age and parity. Serum levels of IL-8, PGF2alpha, and beta-endorphin were measured in serum samples taken after delivery by use of enzyme-linked immunosorbent assay, enzyme immunoassay, and immunoradiometric assay, respectively. RESULTS: The mean difference in total duration of labor between matched pairs with and without acupuncture was -136.5 minutes (95% confidence interval [CI] 191.1 minutes, -81.9 minutes; paired t test, P < .001). The mean difference of the duration of the first and second stages of labor between matched pairs with and without acupuncture was -138.8 minutes (95% CI 188.6, -89.0 minutes; paired t test, P < .001) and 2.3 minutes (95% CI 15.5, 20.1 minutes; paired t test, P = .8), respectively. The geometric means of ratios of IL-8, PGF2alpha, and beta-endorphin between matched pairs in women with and without acupuncture showed no statistically significant differences. Serum levels of IL-8, PGF2alpha, and beta-endorphin were not significantly correlated with the duration of the first and second stages of labor. CONCLUSION: Prenatal acupuncture treatment significantly reduces the duration of labor and may be a valuable tool in prenatal preparation. Serum levels of IL-8, PGF2alpha, and beta-endorphin are not significantly influenced by acupuncture and are therefore not likely to mediate acupuncture-related effects during labor.
Assuntos
Analgesia por Acupuntura , Dinoprosta/sangue , Interleucina-8/sangue , Trabalho de Parto/sangue , beta-Endorfina/sangue , Adulto , Feminino , Humanos , Gravidez , Fatores de TempoRESUMO
OBJECTIVE: To determine whether serum vascular endothelial growth factor is an independent prognostic factor in ovarian cancer patients. METHODS: We measured vascular endothelial growth factor in pretreatment serum samples of 60 women with International Federation of Gynecology and Obstetrics stages I to IV epithelial ovarian cancer, using an enzyme-linked immunosorbent assay. The results were correlated to clinical data. RESULTS: The median vascular endothelial growth factor serum level in ovarian cancer patients was 466.1 pg/mL (range 69.7-2835 pg/mL). The 75% quartile was defined as a cut-off level. Elevated vascular endothelial growth factor serum levels before therapy correlated significantly with a poorer disease-free (log-rank-test, P = .003) and overall survival (log-rank-test, P = .007). Multivariate analysis revealed serum vascular endothelial growth factor to be an independent prognostic factor of overall and disease-free survival. When median pretreatment levels of vascular endothelial growth factor were grouped by tumor stage, histologic grade of tumor cells, histologic type of the tumor, lymph node involvement, age of patient, and residual tumor mass, we found a statistically significant correlation between serum levels of vascular endothelial growth factor and histologic grade (Mann-Whitney U test, P = .03). CONCLUSION: Vascular endothelial growth factor appears to be an additional factor for predicting the outcome of patients with epithelial ovarian cancer. Owing to its independence from established prognostic factors, vascular endothelial growth factor could be used for prognostic information in clinically relevant subsets such as early-stage or lymph node-negative ovarian cancers.
Assuntos
Fatores de Crescimento Endotelial/sangue , Linfocinas/sangue , Neoplasias Ovarianas/sangue , Adulto , Idoso , Feminino , Humanos , Pessoa de Meia-Idade , Análise Multivariada , Neoplasias Ovarianas/mortalidade , Prognóstico , Fator A de Crescimento do Endotélio Vascular , Fatores de Crescimento do Endotélio VascularRESUMO
OBJECTIVE: To evaluate whether the transcervical approach for fallopian tissue sampling is a practicable and safe method to establish an etiologic diagnosis of salpingitis. DESIGN: Controlled clinical study. SETTING: Academic research environment. PATIENT(S): Twenty women with primary or secondary sterility undergoing hysteroscopy and laparoscopy. INTERVENTION(S): During hysteroscopy, fallopian tissue samples were obtained from the proximal parts of both tubes with a cytobrush inserted through the working channel of the hysteroscope. Diagnostic laparoscopy with assessment of tubal patency was performed in the same session. The specimens were split and used for chlamydial testing by both cell culture and polymerase chain reaction. Serum samples were evaluated for the presence of antichlamydial antibodies. MAIN OUTCOME MEASURE(S): Practicability and safety of the method. RESULT(S): The sampling procedure was performed in all patients without complications. Adequate samples were obtained from both tubes in all 20 patients. The fallopian specimens showed evidence of chlamydial infection in one patient. CONCLUSION(S): Those data indicate that transcervical fallopian tissue sampling with a cytobrush is a reliable and safe technique.
Assuntos
Infecções por Chlamydia/patologia , Chlamydia trachomatis , Doenças das Tubas Uterinas/patologia , Tubas Uterinas/patologia , Histeroscopia , Manejo de Espécimes/instrumentação , Colo do Útero , Chlamydia trachomatis/isolamento & purificação , Equipamentos Descartáveis , Doenças das Tubas Uterinas/microbiologia , Tubas Uterinas/microbiologia , Feminino , Humanos , Infertilidade Feminina/patologia , Reação em Cadeia da Polimerase/métodos , Reprodutibilidade dos Testes , Manejo de Espécimes/métodosRESUMO
Disease status during follow-up evaluation of patients with carcinoma of the ovaries is the main criterion for the selection of appropriate management. A cohort analysis was performed to investigate if magnetic resonance imaging (MRI) could improve noninvasive assessment of disease status in patients with carcinoma of the ovaries during follow-up examination. Twenty-four women with carcinoma of the ovaries after primary surgical treatment with subsequent platinum containing chemotherapy were entered into the study. MRI was performed in addition to sonography and computed tomography (CT). Patients without evidence of disease underwent restaging laparotomy. Sensitivity of sonography, CT and MRI was 50, 63 and 75 percent, respectively. Combination of CT and MRI revealed a 75 percent sensitivity rate. Specificity for sonography, CT and MRI was 100, 94 and 94 percent, respectively, and for the combination of CT and MRI, 88 percent. Positive and negative predictive value and accuracy of these methods were 100, 80 and 83 percent for sonography; 83, 83 and 83 percent for CT; 86, 88 and 88 percent for MRI, and 75, 88 and 83 percent for the combination of CT and MRI. In one instance of false-negative sonographic and CT results, MRI detected recurrence located in postoperative scar tissue. In one instance, MRI did not add essential information to the other imaging methods. Therefore, MRI as a time- and cost-intensive procedure should be reserved for instances in which there are doubtful findings arising with other diagnostic tools, rather than as an indispensable routine procedure in the follow-up evaluation of patients with carcinoma of the ovaries.
Assuntos
Metástase Linfática/diagnóstico , Imageamento por Ressonância Magnética , Recidiva Local de Neoplasia/diagnóstico , Neoplasias Ovarianas/diagnóstico , Adulto , Idoso , Feminino , Seguimentos , Humanos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/diagnóstico por imagem , Neoplasias Ovarianas/diagnóstico por imagem , Neoplasias Ovarianas/patologia , Valor Preditivo dos Testes , Sensibilidade e Especificidade , Tomografia Computadorizada por Raios X , UltrassonografiaRESUMO
OBJECTIVE: Ovarian tumors of low malignant potential (borderline tumors) have a 5-year survival rate of 69-98%, illustrating that while the prognosis is better than in the typical epithelial carcinoma, a significant number of women still succumb to this disease. The aim of our study was to elucidate the role of numerical chromosomal aberrations in borderline tumors of the ovary in comparison with benign and malignant epithelial tumors in an effort to develop parameters to differentiate prospectively borderline lesions from benign and invasive tumors. METHODS: Cytologic imprints of surgical specimens of 46 ovarian tumors of low-malignant potential, 17 invasive epithelial carcinomas of the ovary, and 18 benign epithelial tumors of the ovary were examined for numerical chromosomal aberrations (trisomy 7, trisomy 12, and trisomy 17) by fluorescence in situ hybridization (FISH). RESULTS: In benign tumors no evidence of trisomy 7 and 17 was present. Trisomy 12 was detected in six cases (33.3%). We did not find p53 protein overexpression in any case. Ki-67 stained positive in three cases (16.7%). In borderline tumors trisomy 12 was detected in 33 patients (71.7%). Numerical aberrations of chromosome 17 were absent in all cases. Fourteen patients (30.4%) showed trisomy 7. No immunohistochemical staining reaction for p53 protein was found. Staining of the proliferation marker Ki-67 was observed in two cases (4.3%). In malignant epithelial tumors of the ovary, trisomy 7, trisomy 12, and trisomy 17 were detected in 14 (82.3%), 11 (64.7%), and 5 (29.4%) cases, respectively. Four tumors (23.5%) showed immunohistochemically detected p53 protein overexpression. Thirteen tumors (76.5%) stained for Ki-67. CONCLUSION: Our results indicate that trisomy 7 argues against benign disease. Trisomy 17 was specific for invasive disease, while trisomy 12 is common in borderline tumors of the ovary.
Assuntos
Aberrações Cromossômicas/genética , Cromossomos Humanos Par 12 , Cromossomos Humanos Par 17 , Cromossomos Humanos Par 7 , Genes p53/genética , Antígeno Ki-67/genética , Neoplasias Ovarianas/patologia , Trissomia/genética , Adulto , Idoso , Feminino , Humanos , Imuno-Histoquímica , Hibridização in Situ Fluorescente , Pessoa de Meia-Idade , Neoplasias Ovarianas/genética , Regulação para CimaRESUMO
Forty women with diagnosis of CIN I attending our outpatient colposcopic clinic were evaluated regarding psychological distress and compliance to follow-up after they had been informed about their diagnosis. In our study 52.9% of the women (n=21) (group A) reported that they did not get sufficient information concerning diagnosis, while 47.1% of the women (n=19) received sufficient information (group B). Women with adequate information had less fear of having cancer than women with inadequate information (P=0.03). As expected these women had a statistically increased distress (P=0.004). In group A the patients reported that the follow-up period reinforced the anxiety compared to group B (P=0.04). The compliance for regular attendance of cervical cancer screening programs after treatment was significantly better in group B compared to group A (P=0.02). Our study indicates that adequate information for women about the diagnosis CIN I, reassurance and understanding from medical staff are vital for the success in the treatment of patients with mild dyskaryosis. The gynaecologist's counselling strategy plays a major role in these psychological effects.