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2.
Gynecol Oncol ; 156(2): 482-487, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31831167

RESUMO

OBJECTIVES: A randomized control trial (RCT) to estimate the effect of an interventional video on improving palliative care knowledge, acceptability and attendance to outpatient services in gynecologic oncology patients. METHODS: Women receiving treatment for gynecologic malignancy recruited at an academic tertiary care center were randomized to: palliative care educational video or non-directive cancer center video. The primary outcome was referral to palliative care. Function and knowledge were assessed using the Functional Assessment of Cancer Therapy and the Palliative Care Knowledge Scale. Data analyses were performed using t-tests, Wilcoxon rank sum or Fisher's exact tests with significance level of α = 0.05. RESULTS: 111 women were enrolled. Demographic characteristics were equally distributed between groups with respect to age, race, cancer, and stage. There was no statistical difference in knowledge scores or in referral to palliative care between the patients that watched the educational versus control video (29% vs. 27%; p = .79). Secondary analysis showed a statistically significant increase in utilization of palliative care services compared to historic institutional data (8.8% to 31.5%; p ≤.001). Further, those referred had significantly worse baseline functional scores. CONCLUSIONS: Use of a palliative care educational video did not increase knowledge or acceptability of palliative services within this RCT. However, the rate of patients referred to palliative care tripled compared to historic rates. Further studies should investigate whether discussion regarding palliative care services alone may increase desire for referral, and if use of Fact-G scores may identify patients in greatest need of services.


Assuntos
Assistência Ambulatorial/psicologia , Neoplasias dos Genitais Femininos/psicologia , Neoplasias dos Genitais Femininos/terapia , Cuidados Paliativos/psicologia , Educação de Pacientes como Assunto/métodos , Idoso , Assistência Ambulatorial/métodos , Feminino , Humanos , Pessoa de Meia-Idade , Cuidados Paliativos/estatística & dados numéricos , Aceitação pelo Paciente de Cuidados de Saúde
3.
Gynecol Oncol ; 155(1): 69-74, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-31409486

RESUMO

OBJECTIVE: Adiposity has been hypothesized to interfere with the activity of bevacizumab (BEV), an anti-angiogenic agent. Measurements of adiposity, BMI, surface fat area (SFA), and visceral fat area (VFA) were investigated as prognostic of oncologic outcomes among patients treated with chemotherapy, with or without BEV, on GOG 218, a prospective phase III trial. METHOD: Pretreatment computed tomography (CT) for 1538 GOG 218 participants were analyzed. Proportional hazards models assessed association between adiposity and overall survival (OS) adjusted for other prognostic factors. The predictive value of adiposity as a function of BEV treatment was assessed in 1019 patients randomized to either chemotherapy (CT) + placebo (P) → P or CT + BEV → BEV. RESULTS: After adjusting for prognostic factors, SFA was not associated with the overall hazard of death (p = 0.981). There was a non-significant 0.1% (p = 0.062) increase in hazard of death associated with a unit increase in VFA. When comparing the treatment HRs for patients who did and did not receive BEV, there was no association with SFA (p = 0.890) or VFA (p = 0.106). A non-significant 0.8% increase in the hazard of death with unit increase in BMI (p = 0.086) was observed. BMI values were not predictive of a longer survival for patients with BEV vs placebo (p = 0.606). CONCLUSION: Measures of adiposity strongly correlated to one another but were not predictive of efficacy for BEV. VFA is a weak prognostic factor.


Assuntos
Tecido Adiposo/patologia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma Epitelial do Ovário/tratamento farmacológico , Carcinoma Epitelial do Ovário/patologia , Neoplasias Ovarianas/tratamento farmacológico , Neoplasias Ovarianas/patologia , Adiposidade , Adulto , Idoso , Idoso de 80 Anos ou mais , Inibidores da Angiogênese/administração & dosagem , Bevacizumab/administração & dosagem , Carcinoma Epitelial do Ovário/diagnóstico por imagem , Feminino , Humanos , Pessoa de Meia-Idade , Obesidade/patologia , Obesidade/fisiopatologia , Neoplasias Ovarianas/diagnóstico por imagem , Prognóstico , Intervalo Livre de Progressão , Modelos de Riscos Proporcionais , Tomografia Computadorizada por Raios X
4.
Gynecol Oncol ; 147(1): 98-103, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28743369

RESUMO

OBJECTIVE: Evaluate association between baseline quality of life (QOL) and changes in QOL measured by FACT-O TOI with progression-free disease (PFS) and overall survival (OS) in advanced epithelial ovarian cancer (EOC). METHODS: Patients enrolled in GOG-0218 with completed FACT-O TOI assessments at baseline and at least one follow-up assessment were eligible. Baseline FACT-O TOI scores were sorted by quartiles (Q1-4) and outcomes compared between Q1 and Q2-4 with log-rank statistic and multivariate Cox regression adjusting for age, stage, post-surgical residual disease size, and performance status (PS). Trends in FACT-O TOI scores from baseline to the latest follow-up assessment were evaluated for impact on intragroup (Q1 or Q2-4) outcome by log-rank analysis. RESULTS: Of 1152 eligible patients, 283 formed Q1 and 869 formed Q2-4. Mean baseline FACT-O TOI scores were 47.5 for Q1 vs. 74.7 for Q2-4 (P<0.001). Q1 compared to Q2-4 had worse median OS (37.5 vs. 45.6months, P=0.001) and worse median PFS (12.5 vs. 13.1months, P=0.096). Q2-4 patients had decreased risks of disease progression (HR 0.974, 95% CI 0.953-0.995, P=0.018), and death (HR 0.963, 95% CI 0.939-0.987, P=0.003) for each five-point increase in baseline FACT-O TOI. Improving versus worsening trends in FACT-O TOI scores were associated with longer median PFS (Q1: 12.7 vs. 8.6months, P=0.001; Q2-4: 16.7 vs. 11.1months, P<0.001) and median OS (Q1: 40.8 vs. 16months, P<0.001; Q2-4: 54.4 vs. 33.6months, P<0.001). CONCLUSIONS: Baseline FACT-O TOI scores were independently prognostic of PFS and OS while improving compared to worsening QOL was associated with significantly better PFS and OS in women with EOC.


Assuntos
Neoplasias Epiteliais e Glandulares/psicologia , Neoplasias Ovarianas/psicologia , Qualidade de Vida , Adulto , Fatores Etários , Idoso , Carcinoma Epitelial do Ovário , Feminino , Humanos , Pessoa de Meia-Idade , Neoplasias Epiteliais e Glandulares/mortalidade , Neoplasias Epiteliais e Glandulares/patologia , Neoplasias Ovarianas/mortalidade , Neoplasias Ovarianas/patologia , Valor Preditivo dos Testes , Prognóstico , Análise de Regressão , Análise de Sobrevida
5.
Ann Oncol ; 28(4): 711-717, 2017 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-28327917

RESUMO

The consensus statements regarding first-line therapies in women with ovarian cancer, reached at the Fifth Ovarian Cancer Consensus Conference held in Tokyo, Japan, in November 2015 are reported. Three topics were reviewed and the following statements are recommended: (i) Surgery: the subgroups that should be considered in first-line ovarian cancer clinical trials should be (a) patients undergoing primary debulking surgery and (b) patients receiving neo-adjuvant chemotherapy. The amount of residual disease following surgery should further stratify patients into those with absent gross residual disease and others. (ii) Control arms for chemotherapy: for advanced stage ovarian cancer the standard is intravenous 3-weekly carboplatin and paclitaxel. Acceptable alternatives, which should be stratified variables in trials when more than one regimen is offered, include weekly paclitaxel plus 3-weekly carboplatin, the addition of bevacizumab to 3-weekly carboplatin and paclitaxel, and intraperitoneal therapy. (iii) Trial Endpoints: overall survival is the preferred primary endpoint for first-line clinical trials with or without a maintenance component. Progression-free survival (PFS) is an alternative primary endpoint, but if PFS is chosen overall survival must be measured as a secondary endpoint and PFS must be supported by additional endpoints, including predefined patient reported outcomes and time to first or second subsequent therapy. For neoadjuvant therapy, additional 'window of opportunity' endpoints should be included.


Assuntos
Neoplasias Epiteliais e Glandulares/terapia , Neoplasias Ovarianas/terapia , Projetos de Pesquisa , Carcinoma Epitelial do Ovário , Feminino , Humanos
6.
Ann Oncol ; 27(1): 114-21, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26487588

RESUMO

BACKGROUND: To determine whether time from surgery to initiation of chemotherapy impacts survival in advanced ovarian carcinoma. PATIENTS AND METHODS: This is a post-trial ad hoc analysis of Gynecologic Oncology Group protocol 218, a phase III randomized, double-blind, placebo-controlled trial designed to study the antiangiogenesis agent, bevacizumab, in primary and maintenance therapy for patients with newly diagnosed advanced ovarian carcinoma. Maximum attempt at debulking was an eligibility criterion. Stage III patients, not stage IV, were required to have gross macroscopic or palpable residual disease following surgery. The survival impact of time from surgery to initiation of chemotherapy was studied using Cox regression models and stratified by treatment arm, residual disease and other clinical and pathologic factors. RESULTS: One thousand seven hundred eighteen assessable patients were randomized (stage III (n = 1237); stage IV (n = 477), including those with complete resection (stage IV only, n = 81), low-volume residual (≤1 cm, n = 701), and suboptimal (>1 cm, n = 932). On multivariate analysis, time to chemotherapy initiation was predictive of overall survival (P < 0.001), with the complete resection group (i.e. stage IV) encountering an increased risk of death when time to initiation of chemotherapy exceeded 25 days (95% confidence interval 16.6-49.9 days). CONCLUSION: Survival for women with advanced ovarian cancer may be adversely affected when initiation of chemotherapy occurs >25 days following surgery. Our analysis applies to stage IV only as women with stage III who underwent complete resection were not eligible for this trial. These results, however, are consistent with Gompertzian first-order kinetics where patients with microscopic residual are most vulnerable. CLINICAL TRIALS IDENTIFIER: NCT00262847.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Cistadenocarcinoma Seroso/terapia , Neoplasias Ovarianas/terapia , Idoso , Bevacizumab/administração & dosagem , Carboplatina/administração & dosagem , Quimioterapia Adjuvante , Cistadenocarcinoma Seroso/mortalidade , Intervalo Livre de Doença , Método Duplo-Cego , Feminino , Humanos , Estimativa de Kaplan-Meier , Pessoa de Meia-Idade , Análise Multivariada , Neoplasias Ovarianas/mortalidade , Paclitaxel/administração & dosagem , Modelos de Riscos Proporcionais , Resultado do Tratamento
7.
Ann Oncol ; 24 Suppl 10: x53-x58, 2013 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-24265406

RESUMO

Angiogenesis plays a fundamental role in the pathogenesis of ovarian cancer. Vascular endothelial growth factor (VEGF) expression has been associated with the development of malignant ascites and tumor progression. Bevacizumab (Avastin(®); Genentech, South San Francisco, CA, USA), a humanized anti-VEGF monoclonal antibody, is the most widely studied antiangiogenesis agent across tumor types and specifically in epithelial ovarian cancer (EOC). With the recent reporting of four consecutive positive randomized trials adding bevacizumab to chemotherapy in the treatment of both front-line (GOG 218 and ICON7) and recurrent EOC ['platinum-resistant' (AURELIA Trial) or 'platinum-sensitive' (OCEANS Trial)], the most debatable question today is thus not IF we should treat ovarian cancer patients with bevacizumab, but WHEN. As bevacizumab is active in both settings, it seems appropriate to carefully consider this clinical controversy: 'what is the optimal setting for bevacizumab treatment?' A fine balance of efficacy, toxicity, quality of life, and symptom control is the main crux of this controversy. The cost effectiveness of bevacizumab in EOC is also controversial.


Assuntos
Anticorpos Monoclonais Humanizados/uso terapêutico , Recidiva Local de Neoplasia/tratamento farmacológico , Neoplasias Epiteliais e Glandulares/tratamento farmacológico , Neovascularização Patológica/tratamento farmacológico , Neoplasias Ovarianas/tratamento farmacológico , Inibidores da Angiogênese/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica , Bevacizumab , Carcinoma Epitelial do Ovário , Intervalo Livre de Doença , Feminino , Humanos , Recidiva Local de Neoplasia/patologia , Neoplasias Epiteliais e Glandulares/patologia , Neoplasias Ovarianas/patologia , Fator A de Crescimento do Endotélio Vascular/antagonistas & inibidores
8.
Ann Oncol ; 22 Suppl 8: viii65-viii68, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22180405

RESUMO

Tumor angiogenesis is a fundamental process driving the progression of epithelial ovarian cancer and related malignancies. The question is whether agents targeting tumor angiogenesis should at this time be integrated into standard treatment. In this article, the pro side of this question is presented. Multiple phase II trials have demonstrated efficacy for antiangiogenic agents in the treatment of women with recurrent ovarian cancer. Results of three phase III trials evaluating the antivascular endothelial growth factor antibody bevacizumab have been presented, all demonstrating significant increases in progression-free survival when combined with standard cytotoxic chemotherapy and continued beyond chemotherapy, with acceptable toxicity. Several other angiogenesis-targeted agents are undergoing phase III evaluation. Based on these data, it is concluded that antiangiogenic therapy, at least with bevacizumab, should be integrated into the standard clinical management of patients with this disease. Further investigation is needed to determine optimal utilization.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Anticorpos Monoclonais Humanizados/uso terapêutico , Recidiva Local de Neoplasia/tratamento farmacológico , Neoplasias Epiteliais e Glandulares/tratamento farmacológico , Neoplasias Ovarianas/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Bevacizumab , Carcinoma Epitelial do Ovário , Ensaios Clínicos Fase II como Assunto , Ensaios Clínicos Fase III como Assunto , Intervalo Livre de Doença , Feminino , Humanos , Recidiva Local de Neoplasia/irrigação sanguínea , Neoplasias Epiteliais e Glandulares/irrigação sanguínea , Neoplasias Epiteliais e Glandulares/patologia , Neoplasias Ovarianas/irrigação sanguínea , Neoplasias Ovarianas/patologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Resultado do Tratamento
9.
Int J Gynecol Cancer ; 18(2): 369-72, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-17624986

RESUMO

The targeting of angiogenesis pathways in the treatment of gynecological cancers is an exciting development in cancer therapy. Bevacizumab has been shown to have activity in ovarian cancer through its inhibition of the vascular endothelial growth factor. Fallopian tube carcinoma is a rare malignancy and is often treated in a similar manner as ovarian carcinoma. We present a case of a complete response in a woman with refractory metastatic fallopian tube carcinoma treated with bevacizumab. This report demonstrates the significance of anti-angiogenesis therapy in the treatment of these tumors.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Anticorpos Monoclonais/uso terapêutico , Antineoplásicos/uso terapêutico , Neoplasias das Tubas Uterinas/tratamento farmacológico , Anticorpos Monoclonais Humanizados , Bevacizumab , Neoplasias das Tubas Uterinas/patologia , Feminino , Humanos , Pessoa de Meia-Idade
11.
Int J Gynecol Cancer ; 15(5): 710-26, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-16174217

RESUMO

The purpose of this article is to review the current literature pertaining to various angiogenic stimulators and angiogenesis inhibitors in gynecological malignancies and the relevance of these markers in the prognosis of these diseases. We also summarize the antiangiogenic drugs currently in development and in clinical use in gynecological oncology. The information was obtained from a computer search of MEDLINE for studies published in the English language regarding angiogenesis and angiogenesis inhibitors in gynecological malignancies between 1970 and December 2003; additional sources were identified through cross-referencing. In ovarian cancer, various different angiogenic activators have been found to correlate with microvessed density (MVD), stage, lymph node and peritoneal metastasis, and survival. In cervical cancer, correlation has been seen between increased angiogenic markers and stage, grade, tumor size, and survival. Studies in endometriat cancer show correlation of angiogenic markers with stage, grade, MVD, and survival. Whereas, in gestational trophoblastic neoplasm (GTD) only few markers have been studied, and some correlated with progression. Information on anti angiogenic drugs currently in ongoing and upcoming trials in gynecological malignancies is also presented. Angiogenesis factors may have a prognostic role to play in patients with gynecological cancers and should continue to be investigated as clinically useful tumor markers. Antiangiogenic-targeted therapies offer an attractive strategy for clinical investigation in gynecologic oncology.


Assuntos
Neoplasias dos Genitais Femininos/irrigação sanguínea , Neoplasias dos Genitais Femininos/tratamento farmacológico , Neovascularização Patológica/tratamento farmacológico , Animais , Progressão da Doença , Feminino , Neoplasias dos Genitais Femininos/metabolismo , Neoplasias dos Genitais Femininos/patologia , Humanos , Metástase Neoplásica/prevenção & controle , Receptores de Fatores de Crescimento do Endotélio Vascular/metabolismo , Fator A de Crescimento do Endotélio Vascular/classificação , Fator A de Crescimento do Endotélio Vascular/metabolismo
12.
Obstet Gynecol ; 98(5 Pt 1): 726-31, 2001 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11704160

RESUMO

OBJECTIVE: To explore the outcome and long-term follow-up of fertility sparing surgery for cervical adenocarcinoma in situ and early invasive adenocarcinoma. METHODS: Between 1985 and 1996, all women with adenocarcinoma in situ (AIS) and stage I adenocarcinoma were identified. Data were abstracted from clinical records and pathology reviewed. RESULTS: One hundred thirty three women with stage I adenocarcinoma of the cervix were treated. Twenty subjects met the criteria for International Federation of Gynecology and Obstetrics stage IA1 lesions. Fourteen subjects were treated with radical hysterectomy, whereas two were treated with simple hysterectomy. Because of the desire to preserve fertility, four women with adenocarcinoma were treated with cervical conization alone, and three women have gone on to deliver viable infants. Forty-two women with adenocarcinoma in situ were identified, of whom 20 were treated with fertility sparing surgery (conization). Five women treated with conization had positive margins recurring in two, and one developed an invasive adenocarcinoma 5 years after conization. None of the women with adenocarcinoma treated with cervical conization have developed recurrent disease after a median follow-up of 48 months. Cone margin status was predictive of residual disease at hysterectomy. CONCLUSION: Women with adenocarcinoma in situ and negative margins may be treated with conservative, fertility sparing surgery. Education is essential regarding the risks of residual/recurrent disease because subjects can develop lethal recurrent disease. The fertility sparing management of invasive stage IA1 adenocarcinoma of the uterine cervix may also be entertained among women who desire future fertility and have negative margins of resection.


Assuntos
Adenocarcinoma/cirurgia , Carcinoma in Situ/cirurgia , Neoplasias do Colo do Útero/cirurgia , Adulto , Colo do Útero/patologia , Conização , Feminino , Fertilidade , Seguimentos , Humanos , Histerectomia , Gravidez , Resultado da Gravidez , Fatores de Tempo
13.
Gynecol Oncol ; 83(2): 355-62, 2001 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11606097

RESUMO

OBJECTIVES: The coexistence of carcinomas of the endometrium and ovary occurs in about 10% of women with ovarian carcinoma. It is often unclear whether this represents synchronous primary tumors or metastasis from endometrium to ovary, or from ovary to endometrium; consequently, staging, therapy, and expected outcome are uncertain. The Gynecologic Oncology Group sought to study patients with simultaneously detected adenocarcinomas in the endometrium and ovary with disease grossly confined to the pelvis to explore the possible correlation among discrete tumor subsets, natural history, and survival. METHODS: Between 1985 and 1991, 85 patients were prospectively enrolled, of whom 74 were eligible. All were initially treated with total abdominal hysterectomy, bilateral salpingo-oophorectomy, and staging laparotomy, with radiation and chemotherapy left to the discretion of the treating physician and patient. Fifteen pathologic variables were examined to identify differences in tumor behavior. RESULTS: Of the 74 patients, 23 (31%) had microscopic spread of tumor in the pelvis or abdomen. Sixty-four (86%) patients had endometrioid carcinomas in both the endometrium and the ovary, and endometriosis was found in the ovary of 23 (31%) patients. There was concordance between the histologic grade of the tumor in the ovary and the uterus in 51 (69%) patients. The estimated probability of recurrence 5 years following staging surgery is 15.1% (95% confidence interval (CI): 8.7-25.2%). The presence of metastasis discriminated two groups of patients that experienced different probabilities of recurrence within 5 years: 10.0% (95% CI: 4.32-21.3%) for those with tumors confined to the uterus and ovary and 27.1% (95% CI: 13.0-48.5%) for those with metastasis (hazard ratio = 4.6, P = 0.006). The histologic grades of ovarian and uterine tumors also distinguished groups of patients with different probabilities of recurrence at 5 years: 8.0% (95% CI: 2.8-21.3%) for those patients with no more than grade 1 disease at either site and 22.4% (95% CI: 11.8-38.4%) for those with a higher grade in either the ovary or the endometrium (hazard ratio = 3.1, P = 0.047). The estimated overall probability of surviving 5 years is 85.9% and that of surviving 10 years is 80.3%. CONCLUSION: The prognosis for women with simultaneously detected carcinomas in the uterus and ovary with gross disease confined to the pelvis is surprisingly good, particularly for those with disease microscopically limited to the uterus and ovary or of low histologic grade.


Assuntos
Adenocarcinoma/patologia , Neoplasias do Endométrio/patologia , Neoplasias Primárias Múltiplas/patologia , Neoplasias Ovarianas/patologia , Adenocarcinoma/cirurgia , Adulto , Idoso , Neoplasias do Endométrio/cirurgia , Feminino , Humanos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Neoplasias Primárias Múltiplas/cirurgia , Neoplasias Ovarianas/cirurgia , Prognóstico , Estudos Prospectivos
14.
Curr Opin Oncol ; 13(5): 390-3, 2001 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11555718

RESUMO

Reimbursement for gynecologic oncologists can be categorized into three areas: payments for evaluation and management of clinical diagnosis, payments for chemotherapy, and reimbursement for surgical procedures. Revenue from surgical care is generally considered the major source of income for gynecologic oncologists. The transition to Medicare's resource-based relative value scale-based physician payment system began on January 1, 1992, culminating nearly a decade of effort by the medical profession and the government to change the way Medicare pays for physician services. The resource-based relative value scale payment schedule was fully phased in on January 1, 1996, and has been adopted by other third party payers. As a result of this reform, relative value units were created for current procedural technology codes and represent a composite of work, practice, and malpractice expenditures. When multiplied by a dollar conversion factor, relative value units can be used to calculate the reimbursement amount for all procedures covered by Medicare and other private insurers. Many of the discrepancies in reimbursement for similar procedures performed by gynecologists and urologists were partially corrected in 1997; however, sex-specific bias still exists in payment for surgical procedures performed on men and women.


Assuntos
Procedimentos Cirúrgicos em Ginecologia/economia , Ginecologia/economia , Reembolso de Seguro de Saúde/estatística & dados numéricos , Oncologia/economia , Medicare/economia , Escalas de Valor Relativo , Grupos Diagnósticos Relacionados , Feminino , Humanos , Reembolso de Seguro de Saúde/tendências , Imperícia/economia , Estados Unidos , Urologia/economia
15.
Cancer Res ; 61(13): 5083-9, 2001 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-11431345

RESUMO

Tumor cells that contaminate hematopoietic cell preparations contribute to the relapse of neuroblastoma patients who receive autologous stem cell rescue as a component of therapy. Therefore, effective purging methods are needed. This study details in vitro experiments to develop a viral-directed enzyme prodrug purging method that specifically targets neuroblastoma cells. The approach uses an adenovirus to deliver the cDNA encoding a rabbit liver carboxylesterase that efficiently activates the prodrug irinotecan,7-ethyl-10-[4-(1-piperidino)-1-piperidino]carbonyloxycamptothecin (CPT-11). The data show that an adenoviral multiplicity of infection of 50 transduces 100% of cultured neuroblastoma cells and primary tumor cells, irrespective of the level of tumor cell line contamination. Exposure of neuroblastoma cell lines or of mixtures of these cell lines with CD34(+) cells at a ratio of 10:90 to replication-deficient AdRSVrCE for 24 h and subsequent exposure of cells to 1-5 microM CPT-11 for 4 h increased the toxicity of CPT-11 to three neuroblastoma cell lines (SJNB-1, NB-1691, and SK-N-SH) from approximately 20-50-fold and eradicated their clonogenic potential. Also, after "purging," RNA for neuroblastoma cell markers (tyrosine hydroxylase, synaptophysin, and N-MYC) was undetectable by reverse transcription-PCR. In contrast, the purging protocol did not affect the number or type of colonies formed by CD34(+) cells in an in vitro progenitor cell assay. No bystander effect on CD34(+) cells was observed. The method described is being investigated for its potential clinical utility, particularly its efficacy for use with patients having relatively high tumor burdens, because no published methods have been shown to be efficacious when the tumor burden exceeds 1%.


Assuntos
Antineoplásicos Fitogênicos/farmacologia , Purging da Medula Óssea/métodos , Camptotecina/farmacologia , Hidrolases de Éster Carboxílico/genética , Terapia Genética , Neuroblastoma/terapia , Pró-Fármacos/farmacologia , Adenoviridae/genética , Adenoviridae/fisiologia , Antígenos CD34/biossíntese , Antineoplásicos Fitogênicos/farmacocinética , Biomarcadores Tumorais/genética , Biotransformação , Camptotecina/análogos & derivados , Camptotecina/farmacocinética , Carboxilesterase , Hidrolases de Éster Carboxílico/metabolismo , DNA Complementar/genética , Vetores Genéticos/genética , Células-Tronco Hematopoéticas/imunologia , Células-Tronco Hematopoéticas/virologia , Humanos , Irinotecano , Leucócitos Mononucleares/virologia , Neuroblastoma/genética , Neuroblastoma/patologia , Pró-Fármacos/farmacocinética , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Transdução Genética , Células Tumorais Cultivadas
16.
Int Immunopharmacol ; 1(6): 1211-8, 2001 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-11407315

RESUMO

The cyclopentane derivative [1S,2S,3R,4R]-3-[(1S)-1-(acetylamino)-2- ethylbutyl]-4-[(aminoiminomethyl)amino]-2-hydroxy-cyclopentanecarboxylic acid (RWJ-270201) has been previously reported to be a potent and selective inhibitor of influenza virus neuraminidase, and to inhibit infections with this virus in vitro, in mice, and in clinical challenge studies. The effect of oral gavage therapy of 100 mg/kg/day of RWJ-270201 administered twice daily for 5 days beginning 16 h prior to virus exposure, on various immune factors of importance in response to primary influenza infection was determined in mice infected with influenza A/Shangdong/09/93 (H3N2) virus. Spleens taken from the mice 2 h after termination of treatment were processed for cytotoxic T lymphocytes (CTL) and natural killer (NK) cell activity and for enumeration of macrophages, T, T-helper, T-suppressor/cytotoxic, and B cells. Saline-treated mice and normal mice were run in parallel. Treatment had no significant effect on any immune parameter. In a second experiment, mice infected with influenza A/NWS/33 (H1N1) were treated similarly with RWJ-270201 beginning 4 h pre-virus exposure. Treatment prevented any deaths from occurring, and markedly lessened arterial oxygen decline, lung consolidation, and lung virus titers. The mice developed mean neutralizing antibody (NA) titers of 1:592, and six of seven rechallenged mice resisted rechallenge with the same virus, indicating the initial virus-inhibitory effect also did not prevent the animals from developing an adequate humoral immune response to the virus.


Assuntos
Antivirais/farmacologia , Ciclopentanos/farmacologia , Inibidores Enzimáticos/farmacologia , Vírus da Influenza A , Neuraminidase/antagonistas & inibidores , Infecções por Orthomyxoviridae/imunologia , Ácidos Carbocíclicos , Animais , Formação de Anticorpos , Feminino , Guanidinas , Pulmão/virologia , Linfócitos/imunologia , Camundongos , Camundongos Endogâmicos BALB C , Infecções por Orthomyxoviridae/virologia , Oxigênio/sangue , Fenótipo , Baço/citologia , Baço/imunologia
17.
Cancer Res ; 61(7): 3045-52, 2001 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-11306486

RESUMO

One of the advantages of viral-directed enzyme prodrug therapy (VDEPT) is its potential for tumor-specific cytotoxicity. However, the viruses used to deliver cDNAs encoding prodrug-activating enzymes transduce normal cells as well as tumor cells, and several approaches to achieve tumor-specific expression of the delivered cDNAs are being investigated. One such approach is to regulate transcription of the prodrug-activating enzyme with a promoter that is preferentially activated by tumor cells. Published data suggest that the most promising transcription factor/promoter/enhancer combinations are those activated by a tumor-specific transcription factor to retain tumor cell specificity but that are equal in strength to nonspecific viral promoters in their ability to up-regulate target cDNAs. This report identifies MYC-responsive, modified ornithine decarboxylase (ODC) promoter/enhancer sequences that up-regulate target protein expression in tumor cells overexpressing either N-MYC or c-MYC protein. The most efficient of the four constructs assessed contained six additional CACGTG MYC binding sites 5' to the endogenous ODC promoter (R6ODC). Reporter assays with this chimeric promoter/enhancer regulating expression of chloramphenicol acetyltransferase demonstrated 50-250-fold more activity in MYC-expressing cells compared with similar assays with promoterless plasmids. The R6ODC regulatory sequence was approximately equivalent to the CMV promoter in inducing expression of the neomycin resistance gene in c-MYC-expressing SW480 and HT-29 colon carcinoma cells and in N-MYC-expressing NB-1691 neuroblastoma cells. The modified ODC promoter may, therefore, be useful in achieving tissue-specific expression of target proteins in tumor cells that overexpress c- or N-MYC.


Assuntos
Antineoplásicos Fitogênicos/farmacologia , Camptotecina/análogos & derivados , Camptotecina/farmacologia , Regulação Neoplásica da Expressão Gênica , Genes myc/genética , Ornitina Descarboxilase/genética , Regiões Promotoras Genéticas , Proteínas Proto-Oncogênicas c-myc/biossíntese , Animais , Antineoplásicos Fitogênicos/farmacocinética , Biotransformação , Camptotecina/farmacocinética , Carboxilesterase , Hidrolases de Éster Carboxílico/biossíntese , Hidrolases de Éster Carboxílico/genética , Cloranfenicol O-Acetiltransferase/genética , Cloranfenicol O-Acetiltransferase/metabolismo , Neoplasias do Colo/genética , Neoplasias do Colo/metabolismo , Genes Reporter , Glioblastoma/genética , Glioblastoma/metabolismo , Humanos , Immunoblotting , Irinotecano , Proteína MyoD/biossíntese , Proteína MyoD/genética , Neuroblastoma/genética , Neuroblastoma/metabolismo , Proteínas Proto-Oncogênicas c-myc/genética , Coelhos , Rabdomiossarcoma/genética , Rabdomiossarcoma/metabolismo , Transfecção , Transgenes , Células Tumorais Cultivadas
18.
Gynecol Oncol ; 80(3): 359-63, 2001 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-11263932

RESUMO

OBJECTIVE: The goal of this work was to develop a combination chemotherapy regimen consisting of ifosfamide and paclitaxel to be evaluated in the management of gynecologic malignancies. METHODS: The Gynecologic Oncology Group conducted a Phase I trial of the regimen, initially with paclitaxel (24-h infusion) delivered on Day 1 and ifosfamide (1 h) administered (with Mesna) over the subsequent 4 days. All patients received granulocyte colony-stimulating factor (G-CSF) starting 24 h after the Day 5 chemotherapy. Treatment was repeated on a 28-day schedule. A cohort of patients also received the alternate sequence of ifosfamide (4 days) followed by paclitaxel. RESULTS: Twenty-two patients were evaluated. Even at the lowest dose level tested (paclitaxel 135 mg/m(2) followed by ifosfamide 1 g/m(2)/day x 4 days) grade 4 neutropenia was almost universal, despite the routine use of G-CSF. The alternate drug administration sequence resulted in marrow suppression of similar severity. CONCLUSION: The combination of 24-h infusional paclitaxel with ifosfamide delivered over 4 days results in severe neutropenia, despite the administration of G-CSF, and is not recommended for further evaluation. In view of the known activity of the two agents in several malignancies, including cervix cancer, it would be reasonable to investigate the delivery of the agents employing alternative treatment schedules predicted to result in less severe marrow suppression (e.g., 3-h infusional paclitaxel).


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Neoplasias dos Genitais Femininos/tratamento farmacológico , Neoplasias Pélvicas/tratamento farmacológico , Adulto , Idoso , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Relação Dose-Resposta a Droga , Esquema de Medicação , Feminino , Fator Estimulador de Colônias de Granulócitos/administração & dosagem , Humanos , Ifosfamida/administração & dosagem , Ifosfamida/efeitos adversos , Infusões Intravenosas , Compostos de Metilureia , Pessoa de Meia-Idade , Neutropenia/induzido quimicamente , Paclitaxel/administração & dosagem , Paclitaxel/efeitos adversos
19.
Cancer ; 91(4): 758-70, 2001 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-11241244

RESUMO

BACKGROUND: Because primary carcinoma of the vagina comprises less than 2% of all gynecologic malignancies, the reported experience in the treatment of large numbers of patients is available only from a few major centers and most often encompasses a variety of differences in treatment selection and technique. The objective of this study was to assess the long term results of an interstitial iridium-192 afterloading implant technique using the Syed-Neblett dedicated vaginal plastic template. METHODS: Patients who were treated from 1976 to 1997 were examined retrospectively. RESULTS: Seventy-one patients underwent interstitial implantation with (n = 61 patients) or without external beam radiotherapy. The median age was 59 years (range, 16-86 years). Patients were staged according to the International Federation of Gynecology and Obstetrics system and included Stage I (n = 10 patients), Perez modification Stage IIA (n = 14 patients), Perez modification Stage IIB (n = 25 patients), Stage III (n = 15 patients), and Stage IV (n = 7 patients). Each implant delivered an approximately 20-gray (Gy) minimum tumor dose, with the total tumor dose reaching 80 Gy with integrated external beam radiotherapy. Local control was achieved in 53 patients (75%). The median follow-up was 66 months (range, 15-163 months), and the 2-year, 5-year, and 10-year actuarial disease free survival rates are 73%, 58%, and 58%, respectively. By stage, 5-year disease free survival rates included Stage I, 100% of patients; Stage IIA, 60% of patients; Stage IIB, 61% of patients; Stage III, 30% of patients; and Stage IV, 0% of patients. The factors disease stage and primary lesion size independently influenced the survival rates. Significant complications occurred in 9 patients (13%) and included necrosis (n = 4 patients), fistulae (n = 4 patients), and small bowel obstruction (n = 1 patient). CONCLUSIONS: Interstitial irradiation can effect local control in the majority of patients with primary carcinoma of the vagina with acceptable morbidity. Long term cure is demonstrable in patients with Stage I-III disease.


Assuntos
Braquiterapia , Neoplasias Vaginais/radioterapia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Pessoa de Meia-Idade , Invasividade Neoplásica , Estadiamento de Neoplasias , Estudos Retrospectivos , Análise de Sobrevida , Neoplasias Vaginais/patologia
20.
Proc Natl Acad Sci U S A ; 98(3): 1176-81, 2001 Jan 30.
Artigo em Inglês | MEDLINE | ID: mdl-11158614

RESUMO

Epithelial ovarian cancer is the leading cause of death from gynecologic cancer, in part because of the lack of effective early detection methods. Although alterations of several genes, such as c-erb-B2, c-myc, and p53, have been identified in a significant fraction of ovarian cancers, none of these mutations are diagnostic of malignancy or predictive of tumor behavior over time. Here, we used oligonucleotide microarrays with probe sets complementary to >6,000 human genes to identify genes whose expression correlated with epithelial ovarian cancer. We extended current microarray technology by simultaneously hybridizing ovarian RNA samples in a highly parallel manner to a single glass wafer containing 49 individual oligonucleotide arrays separated by gaskets within a custom-built chamber (termed "array-of-arrays"). Hierarchical clustering of the expression data revealed distinct groups of samples. Normal tissues were readily distinguished from tumor tissues, and tumors could be further subdivided into major groupings that correlated both to histological and clinical observations, as well as cell type-specific gene expression. A metric was devised to identify genes whose expression could be considered ideal for molecular determination of epithelial ovarian malignancies. The list of genes generated by this method was highly enriched for known markers of several epithelial malignancies, including ovarian cancer. This study demonstrates the rapidity with which large amounts of expression data can be generated. The results highlight important molecular features of human ovarian cancer and identify new genes as candidate molecular markers.


Assuntos
Adenocarcinoma Papilar/genética , Perfilação da Expressão Gênica , Neoplasias Ovarianas/genética , Ovário/metabolismo , Proteínas/genética , Adenocarcinoma Papilar/patologia , Biomarcadores Tumorais/genética , Linhagem Celular , Feminino , Marcadores Genéticos , Humanos , Análise de Sequência com Séries de Oligonucleotídeos , Neoplasias Ovarianas/patologia , Ovário/citologia , RNA/genética , RNA Neoplásico/genética , Valores de Referência , Reprodutibilidade dos Testes , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Células Tumorais Cultivadas
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