RESUMO
OBJECTIVES: Scirrhous gastric cancer, which accounts for approximately 10% of all gastric cancers, often disseminates to the peritoneum, leading to intractable cases with poor prognosis. There is an urgent need for new treatment approaches for this difficult cancer. METHODS: We previously established an original cell line, HSC-60, from a scirrhous gastric cancer patient and isolated a peritoneal-metastatic cell line, 60As6, in nude mice following orthotopic inoculations. In the present study, we focused on the expression of long noncoding ribonucleic acid (RNA) (lncRNA) in the cell lines and investigated the mechanism on peritoneal dissemination. RESULTS: We demonstrated that an lncRNA, HOX transcript antisense RNA (HOTAIR), is expressed significantly more highly in 60As6 than HSC-60 cells. Then, using both HOTAIR knockdown and overexpression experiments, we showed that high-level expression of HOTAIR promotes epithelial-mesenchymal transition (EMT) in 60As6 cells. By luciferase assay, we found that HOTAIR directly targets and binds to miR-217, and that miR-217 directly binds to Zinc finger E-box-binding homeobox 1 (ZEB1). The knockdown of HOTAIR in 60As6 cells significantly reduced the invasion activity and peritoneal dissemination - and significantly prolonged the survival - in the orthotopic tumor mouse model. CONCLUSION: An EMT-associated pathway (the HOTAIR-miR-217-ZEB1 axis) appears to inhibit peritoneal dissemination and could lead to a novel therapeutic strategy against scirrhous gastric cancer in humans.
Assuntos
Adenocarcinoma Esquirroso/genética , Transição Epitelial-Mesenquimal/genética , MicroRNAs/genética , Peritônio/patologia , RNA Longo não Codificante/genética , Neoplasias Gástricas/genética , Adenocarcinoma Esquirroso/secundário , Animais , Linhagem Celular Tumoral , Proliferação de Células , Regulação Neoplásica da Expressão Gênica , Técnicas de Silenciamento de Genes , Humanos , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Nus , Neoplasias Gástricas/secundárioRESUMO
A 46-year-old woman was referred to our hospital because of nausea. Endoscopy revealed scirrhous gastric cancer, and abdominalcomputed tomography revealed peritonealdissemination. She was diagnosed with Stage IV gastric cancer and treated with S-1 plus CDDP combination chemotherapy. After 4 courses of chemotherapy, the primary tumor and peritoneal dissemination were considered clinically stable, but the uterus grew rapidly. She was diagnosed as having uterine metastasis based on cervicaland endometrialsmear class V cytology. As the chemotherapy was not effective for the uterine lesions, totalhysterectomy and bilateralsal pingo-oophorectomy were performed. Histological findings showed a poorly differentiated cancer with vascular emboli. Uterine metastases are an important consideration in women with scirrhous gastric cancer, and we recommend palliative hysterectomy for chemotherapy-resistant metastases if the primary tumor and other metastases are controlled.
Assuntos
Adenocarcinoma Esquirroso/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Coagulação Intravascular Disseminada/etiologia , Neoplasias Gástricas/patologia , Neoplasias Uterinas/tratamento farmacológico , Adenocarcinoma Esquirroso/secundário , Adenocarcinoma Esquirroso/cirurgia , Evolução Fatal , Feminino , Gastrectomia , Humanos , Pessoa de Meia-Idade , Neoplasias Gástricas/tratamento farmacológico , Neoplasias Gástricas/cirurgia , Neoplasias Uterinas/secundárioAssuntos
Adenocarcinoma Esquirroso/secundário , Neoplasias da Mama/patologia , Enoftalmia/etiologia , Neoplasias Orbitárias/secundário , Adenocarcinoma Esquirroso/complicações , Adenocarcinoma Esquirroso/diagnóstico , Idoso , Biópsia , Neoplasias da Mama/complicações , Diagnóstico Diferencial , Enoftalmia/diagnóstico , Enoftalmia/cirurgia , Feminino , Humanos , Imageamento por Ressonância Magnética , Metástase Neoplásica , Procedimentos Cirúrgicos Oftalmológicos , Órbita/patologia , Neoplasias Orbitárias/complicações , Neoplasias Orbitárias/terapia , Radioterapia AdjuvanteRESUMO
A 76-year-old man noticed a tumor under his right nipple. Mammography revealed an irregularly shaped nodule in the right breast. Ultrasonography showed a 20mm irregularly shaped nodule in the central area. MRI showed an 18mm irregularly shaped nodule in the central area with skin invasion. On core needle biopsy, the tumor was diagnosed as an invasive ductal carcinoma of the right breast. The patient underwent a mastectomy and axillary lymph node dissection. Histopathologically, the patient was diagnosed with invasive ductal carcinoma(scirrhous carcinoma). The tumor was positive for both ER and PgR, and the HER2 score was 1. The Ki-67 index was 20-30%. Male breast carcinoma accounts for approximately 1.0% of all breast carcinomas. The most common complaint is elastic, hard nodules with no pain. Postoperative therapy for male breast cancer is similar to that for female cancer. This patient underwent a mastectomy and lymph node dissection. After surgery, tamoxifen was administered as adjuvant therapy. There has been no evidence of recurrence for 4 months after the surgery.
Assuntos
Adenocarcinoma Esquirroso , Neoplasias da Mama Masculina/patologia , Adenocarcinoma Esquirroso/diagnóstico por imagem , Adenocarcinoma Esquirroso/secundário , Adenocarcinoma Esquirroso/cirurgia , Idoso , Axila/patologia , Biópsia com Agulha de Grande Calibre , Neoplasias da Mama Masculina/diagnóstico por imagem , Neoplasias da Mama Masculina/cirurgia , Humanos , Excisão de Linfonodo , Metástase Linfática , Masculino , Mamografia , Mastectomia , Invasividade NeoplásicaRESUMO
BACKGROUND: Extracapsular invasion (ECI) of metastatic axillary lymph nodes has been associated with aggressive nodal disease but its prognostic role in breast cancer is unclear. The present study evaluated nodal ECI as a predictor of breast cancer recurrence. METHODS: We evaluated 154 women with histologically proven node-positive breast cancer who were diagnosed with invasive ductal carcinoma, and investigated the relationships between ECI and recurrences and other clinicopathological factors, particularly vascular invasion and the number of lymph node metastases. RESULTS: The presence of ECI at positive nodes was significantly associated with the number of positive nodes, and with disease recurrence and survival in univariate (but not multivariate) analysis. Interestingly, all ECI(+) patients with distant metastases in our series had peritumoral vascular invasion (PVI), which may have reflected systemic disease; ECI with PVI of the primary tumor strongly predicted recurrent disease and shorter survival. CONCLUSION: ECI of axillary metastases combined with PVI indicates high tumor aggressiveness. Patients with ECI and PVI may be considered for stronger adjuvant therapies because of their high risk for distant recurrences.
Assuntos
Adenocarcinoma Esquirroso/secundário , Adenocarcinoma/secundário , Neoplasias da Mama/patologia , Carcinoma Ductal de Mama/secundário , Carcinoma Papilar/secundário , Linfonodos/patologia , Recidiva Local de Neoplasia/patologia , Adenocarcinoma/mortalidade , Adenocarcinoma/terapia , Adenocarcinoma Esquirroso/mortalidade , Adenocarcinoma Esquirroso/terapia , Axila , Neoplasias da Mama/mortalidade , Neoplasias da Mama/terapia , Carcinoma Ductal de Mama/mortalidade , Carcinoma Ductal de Mama/terapia , Carcinoma Papilar/mortalidade , Carcinoma Papilar/terapia , Terapia Combinada , Feminino , Seguimentos , Humanos , Metástase Linfática , Pessoa de Meia-Idade , Gradação de Tumores , Invasividade Neoplásica , Recidiva Local de Neoplasia/mortalidade , Recidiva Local de Neoplasia/terapia , Estadiamento de Neoplasias , Prognóstico , Taxa de SobrevidaRESUMO
We present the case of a 55-year-old-woman who was diagnosed with left breast cancer, and underwent a left mastectomy and left axillary lymph node resection. The histopathological examination indicated scirrhous carcinoma and lesser papillotubular carcinoma[estrogen receptor-negative (ER-), progesterone receptor-negative(PgR-), and human epidermal growth factor receptor 2-positive, grade 3 (HER2, 3+)] with lymph node metastases. Adjuvant chemotherapy consisting of epirubicin and cyclophosphamide (EC) followed by paclitaxel was administered. During the therapy, the patient noticed a mass on her left chest wall. It was diagnosed as a locally recurrent tumor. A computed tomography (CT) scan indicated supraclavicular lymph node metastasis. The patient underwent radiotherapy and was administered chemotherapy with TS-1 and trastuzumab. Brain metastases were found 24 months postoperatively, and the patient underwent surgery and wholebrain radiotherapy. After these, systemic capecitabine and trastuzumab chemotherapy was administered. The therapy was subsequently changed to capecitabine and lapatinib. There have been no subsequent metastatic tumors, and good control has been achieved for a long time after the detection of brain metastases.
Assuntos
Adenocarcinoma Esquirroso/terapia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Encefálicas/terapia , Neoplasias da Mama/terapia , Carcinoma Ductal de Mama/terapia , Adenocarcinoma Esquirroso/secundário , Neoplasias Encefálicas/secundário , Neoplasias da Mama/patologia , Terapia Combinada , Feminino , Humanos , Pessoa de Meia-IdadeRESUMO
A 74-year-old man complained of blood in his urine over a 1-week period beginning in early October 2013, and was examined in the urology department of our hospital. A thorough examination revealed bladder cancer, and surgery was planned after two cycles of preoperative gemcitabine plus cisplatin chemotherapy. A chest computed tomography (CT) performed to evaluate the response to chemotherapy revealed a mass in the right breast. The patient had previously complained about the same site, and mammography and ultrasonography had suggested the possibility of a malignant mammary gland tumor. The results of aspiration cytology were Class V, and based on that finding, a diagnosis of cancer of the right breast was made. In February 2014, we performed a mastectomy, while preserving the pectoral muscles, along with sentinel node biopsy, total cystectomy, urethrectomy, pelvic lymph node dissection, and ureteroileal anastomosis. The histopathological diagnosis of the right breast tumor was invasive ductal carcinoma[scirrhous carcinoma, ly (+), v (-), g (+), f (+), s (+), nuclear grade 1=atypia 2+mitosis 1, EIC (-), ICT (-), NCAT (-)]. A micrometastatic tumor measuring approximately 1mm was observed in the sentinel lymph node. The breast disease was classified as pT1N1mi(sn)M0, Stage IIA, and the tumor was ER (+), PgR (+), HER2/neu (2+), and FISH (-). The bladder cancer was diagnosed as urothelial carcinoma, non-papillary, invasive G2>G3, pT2a; no pelvic lymph node metastases were detected, and it was classified as pT2aN0M0, Stage II. Synchronous male breast cancer and bladder cancer is a very rare condition, and we report the case with a review of the literature.
Assuntos
Adenocarcinoma Esquirroso , Neoplasias da Mama Masculina , Neoplasias da Mama , Neoplasias Primárias Múltiplas , Neoplasias da Bexiga Urinária , Adenocarcinoma Esquirroso/tratamento farmacológico , Adenocarcinoma Esquirroso/secundário , Adenocarcinoma Esquirroso/cirurgia , Idoso , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Neoplasias da Mama/cirurgia , Neoplasias da Mama Masculina/tratamento farmacológico , Neoplasias da Mama Masculina/patologia , Neoplasias da Mama Masculina/cirurgia , Humanos , Metástase Linfática , Masculino , Neoplasias Primárias Múltiplas/tratamento farmacológico , Neoplasias Primárias Múltiplas/cirurgia , Biópsia de Linfonodo Sentinela , Neoplasias da Bexiga Urinária/tratamento farmacológico , Neoplasias da Bexiga Urinária/patologia , Neoplasias da Bexiga Urinária/cirurgiaRESUMO
We report a 44-year-old male patient who was diagnosed with scirrhous gastric cancer with peritoneal dissemination using laparoscopy. The patient underwent a non-curative resection with laparoscopic distal subtotal gastrectomy. In addition, we placed a port into the patient's abdomen for intraperitoneal chemotherapy administration. Postoperatively, we administered capecitabine (per os)+ paclitaxel (intraperitoneally) and, after 2 cycles, the oral anticancer agent 5-FU was given. The patient died of peritonitis carcinomatosa 25 months after the operation. The combined therapies contributed to improve the quality of life, specifically oral ingestion, for 2 years.
Assuntos
Adenocarcinoma Esquirroso/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Peritoneais/tratamento farmacológico , Neoplasias Gástricas/tratamento farmacológico , Adenocarcinoma Esquirroso/secundário , Adenocarcinoma Esquirroso/cirurgia , Adulto , Evolução Fatal , Gastrectomia , Humanos , Laparoscopia , Masculino , Neoplasias Peritoneais/secundário , Qualidade de Vida , Neoplasias Gástricas/patologia , Neoplasias Gástricas/cirurgiaRESUMO
Peritoneal metastases are one reason for the poor prognosis of scirrhous gastric cancer (SGC), and myofibroblast provides a favorable environment for the peritoneal dissemination of gastric cancer. The aim of this study was to determine whether myofibroblast originates from peritoneal mesothelial cells under the influence of the tumor microenvironment. Immunohistochemical studies of peritoneal biopsy specimens from patients with peritoneal lavage cytological (+) status demonstrate the expression of the epithelial markers cytokeratin in fibroblast-like cells entrapped in the stroma, suggesting that these cells stemmed from local conversion of mesothelial cells. To confirm this hypothesis in vitro, we co-incubated mesothelial cells with SGC or non-SGC to investigate morphology and function changes. As we expected, mesothelial cells undergo a transition from an epithelial phenotype to a mesenchymal phenotype with loss of epithelial morphology and decrease in the expression of cytokeratin and E-cadherin when exposed to conditioned medium from HSC-39, and the induction of mesothelial cells can be abolished using a neutralizing antibody to transforming growth factor-beta1 (TGF-ß1) as well as by pre-treatment with SB431542. Moreover, we found that these mesothelial cells-derived cells exhibit functional properties of myofibroblasts, including the ability to increase adhesion and invasion of SGC. In summary, our current data demonstrated that mesothelial cells are a source of myofibroblasts under the SGC microenvironment which provide a favorable environment for the dissemination of gastric cancer; TGF-ß1 produced by autocrine/paracrine in peritoneal cavity may play a central role in this pathogenesis.
Assuntos
Adenocarcinoma Esquirroso/secundário , Transição Epitelial-Mesenquimal , Epitélio/patologia , Fibroblastos/patologia , Neoplasias Peritoneais/secundário , Neoplasias Gástricas/patologia , Adenocarcinoma Esquirroso/metabolismo , Adesão Celular , Técnicas de Cocultura , Meios de Cultivo Condicionados , Fibroblastos/metabolismo , Humanos , Invasividade Neoplásica , Neoplasias Peritoneais/metabolismo , Peritônio/patologia , Proteína Smad2/metabolismo , Neoplasias Gástricas/metabolismo , Fator de Crescimento Transformador beta1/metabolismo , Células Tumorais Cultivadas , Microambiente TumoralRESUMO
The prognosis of patients with advanced diffuse-type gastric cancer (GC), especially scirrhous gastric cancer (SGC) remains extremely poor. Peritoneal carcinomatosis is a frequent form of metastasis of SGC. With survival rates of patients with peritoneal metastasis at 3 and 5 years being only 9.8% and 0%, respectively, development of a new treatment is urgently crucial. For such development, the establishment of a therapeutic mouse model is required. Among the 11 GC cell lines we examined, HSC-60 showed the most well-preserved expression profiles of the Hedgehog and epithelial-mesenchymal transition pathways found in primary SGCs. After six cycles of harvest of ascitic tumor cells and their orthotopic inoculation in scid mice, a highly metastatic subclone of HSC-60, 60As6 was obtained, by means of which we successfully developed peritoneal metastasis model mice. The mice treated with small interfering (si) RNA targeting NEDD1, which encodes a gamma-tubulin ring complex-binding protein, by the atelocollagen-mediated delivery system showed a significantly prolonged survival. Our mouse model could thus be useful for the development of a new therapeutic modality. Intraperitoneal administration of siRNAs of targeted genes such as NEDD1 could provide a new opportunity in the treatment of the peritoneal metastasis of SGC.
Assuntos
Adenocarcinoma Esquirroso/genética , Adenocarcinoma Esquirroso/terapia , Proteínas Associadas aos Microtúbulos/genética , RNA Interferente Pequeno/administração & dosagem , RNA Interferente Pequeno/genética , Neoplasias Gástricas/genética , Neoplasias Gástricas/terapia , Adenocarcinoma Esquirroso/patologia , Adenocarcinoma Esquirroso/secundário , Animais , Linhagem Celular Tumoral , Colágeno/administração & dosagem , Modelos Animais de Doenças , Sistemas de Liberação de Medicamentos/métodos , Transição Epitelial-Mesenquimal/genética , Feminino , Proteínas Hedgehog/genética , Proteínas de Homeodomínio/genética , Humanos , Injeções Intraperitoneais , Camundongos , Camundongos SCID , Metástase Neoplásica , Neoplasias Peritoneais/genética , Neoplasias Peritoneais/patologia , Neoplasias Peritoneais/secundário , Neoplasias Gástricas/patologia , Ensaios Antitumorais Modelo de Xenoenxerto , Proteínas Elk-1 do Domínio ets/genéticaRESUMO
We report a case of a 72-year-old woman with breast cancer who developed significant stenosis due to gastric cardia metastasis. The patient had undergone radical mastectomy for breast cancer when she was 53 years old and had developed postoperative recurrent diseases in the sternum and lung when she was 62 years old. Nineteen years after mastectomy, computed tomography (CT) scans showed gastric cardia metastasis. As symptoms of cardiac stenosis gradually developed, we performed proximal gastrectomy. The specimen was histologically diagnosed as estrogen receptor( ER)-positive scirrhous carcinoma that had metastasized from the breast cancer. The patient resumed oral intake of food after surgery. Surgical treatment might be useful to improve the quality of life of patients with metastatic gastric tumor.
Assuntos
Adenocarcinoma Esquirroso/cirurgia , Neoplasias da Mama/patologia , Neoplasias Gástricas/cirurgia , Adenocarcinoma Esquirroso/secundário , Idoso , Biópsia , Evolução Fatal , Feminino , Gastrectomia , Humanos , Recidiva , Neoplasias Gástricas/secundárioRESUMO
A 54-year-old female was diagnosed with invasive ductal carcinoma (pT3N1M0, Stage IIIA, estrogen receptor positive [ER (+)], progesterone receptor positive [PgR (+)], human epidermal growth factor receptor type 2 [HER2] score 0) and was treated by preoperative chemotherapy with weekly paclitaxel followed by 5-fluorouracil(5-FU) plus epirubicin plus cyclophosphamide regimen(FEC). Partial mastectomy with axillary dissection was performed. The pathological examination disclosed that the tumor was scirrhous carcinoma, and a pathological partial response was achieved by chemotherapy. Multiple bone metastases were detected 18 months after the surgery during treatment with letrozole as adjuvant therapy. Retroperitoneal metastases with hydronephrosis and a lung metastasis were detected 28 months after the surgery, even though exemestane and zoledronate were administrated after detection of the bone metastases. Chemotherapy with capecitabine was started and she recovered from hydronephrosis 4 months after the start of treatment. After 32 months from the first treatment with capecitabine, the patient is presently alive without hydronephrosis due to continued chemotherapy.
Assuntos
Adenocarcinoma Esquirroso/tratamento farmacológico , Antimetabólitos Antineoplásicos/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Desoxicitidina/análogos & derivados , Fluoruracila/análogos & derivados , Hidronefrose/etiologia , Neoplasias Peritoneais/tratamento farmacológico , Adenocarcinoma Esquirroso/secundário , Neoplasias da Mama/patologia , Capecitabina , Desoxicitidina/uso terapêutico , Feminino , Fluoruracila/uso terapêutico , Humanos , Pessoa de Meia-Idade , Neoplasias Peritoneais/secundárioRESUMO
To the best of our knowledge, we are presenting the first documented primary diagnosis of a 32-year-old pregnant patient at 29 + 4 weeks' gestation with poorly differentiated, metastatic scirrhous breast cancer, with negative hormone receptors, HER-2/neu receptor overexpression and metastases in the lumbar spine. The patient was administered neoadjuvant chemotherapy with vinorelbine and trastuzumab, and received ibandronate for the bone metastases. The tumor responded well to treatment; however, treatment was associated with anhydramnios, probably related to the trastuzumab treatment. Delivery was planned for 33 + 5 weeks' gestation by cesarean section due to concurrent breech presentation and anhydramnios, and the infant is in good health. After delivery, the patient underwent a mastectomy. Following completion of six courses of vinorelbine and ongoing treatment with trastuzumab and ibandronate, the patient's tumor went into regression and currently the patient does not present with any clinical evidence of disease.
Assuntos
Adenocarcinoma Esquirroso/diagnóstico , Neoplasias da Mama/diagnóstico , Vértebras Lombares , Complicações Neoplásicas na Gravidez/diagnóstico , Terceiro Trimestre da Gravidez , Neoplasias da Coluna Vertebral/diagnóstico , Adenocarcinoma Esquirroso/patologia , Adenocarcinoma Esquirroso/secundário , Adulto , Neoplasias da Mama/patologia , Feminino , Humanos , Gravidez , Complicações Neoplásicas na Gravidez/patologia , Neoplasias da Coluna Vertebral/secundárioRESUMO
BACKGROUND: To compare the cyclophosphamide, methotrexate, and fluorouracil (CMF) chemotherapy and the anthracycline-containing regimen cyclophosphamide, epirubicin, and fluorouracil (CEF) to evaluate the efficacy and safety of the latter. METHODS: A total of 294 patients with axillary node-positive primary breast cancer of STAGE I-IIIa were randomly assigned to either CEF [cyclophosphamide (CPA) 500 mg/m(2) i.v. days 1 and 8; epirubicin (EPI) 60 mg/m(2) i.v. day 1; and 5-fluorouracil (5-FU) 500 mg/m(2) i.v. days 1 and 8] or CMF [CPA 500 mg/m(2) i.v. days 1 and 8; methotrexate (MTX) 40 mg/m(2) i.v. days 1 and 8; and 5-FU 500 mg/m(2) i.v. days 1 and 8]. Both treatment regimens were comprised of six cycles at 4-week intervals. Tamoxifen (TAM) 20 mg/day was concomitantly given to estrogen receptor (ER)-positive patients and those with undetermined ER status for 2 years. RESULTS: The overall 5-year survival was 77.1% for CEF and 71.4% for CMF [p = 0.24; hazard ratio 0.79 (95% CI 0.50-1.24)], and the 5-year disease-free survival was 55.7% for CEF and 48.9% for CMF [p = 0.15; hazard ratio 0.80 (95% CI 0.57-1.12)]. Although the log-rank test did not show a significant difference, both overall and disease-free survivals were higher for CEF according to the point estimates. Adverse drug reactions (ADRs) occurred more frequently in CEF. CONCLUSION: Whereas CEF had a good trend compare with CMF, it could not be proven statistically significant. The principal cause of the failure seems to be insufficient power, that is, the dose intensity (EPI: 60 mg/m(2)) set 10 years ago, when the trial began, was low, and the number of trial subjects was small because of the background of the times, which made the accumulation of cases extremely difficult. However, the trial should be considered to be meaningful, as it was the first, formally conducted controlled trial on chemotherapy in Japan.
Assuntos
Adenocarcinoma Esquirroso/tratamento farmacológico , Adenocarcinoma/tratamento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Carcinoma Papilar/tratamento farmacológico , Adenocarcinoma/mortalidade , Adenocarcinoma/secundário , Adenocarcinoma Esquirroso/mortalidade , Adenocarcinoma Esquirroso/secundário , Adulto , Axila , Neoplasias da Mama/mortalidade , Neoplasias da Mama/patologia , Carcinoma Papilar/mortalidade , Carcinoma Papilar/secundário , Quimioterapia Adjuvante , Ciclofosfamida/administração & dosagem , Epirubicina/administração & dosagem , Feminino , Fluoruracila/administração & dosagem , Humanos , Japão , Metástase Linfática , Metotrexato/administração & dosagem , Pessoa de Meia-Idade , Receptores de Estrogênio/metabolismo , Taxa de Sobrevida , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND: The prognosis of scirrhous gastric cancer remains poor despite extended surgery or adjuvant or neoadjuvant chemotherapy. A pilot study of S-1 (TS-1; Taiho Pharmaceutical, Tokyo, Japan), an oral 5-fluorouracil derivative, for neoadjuvant chemotherapy unexpectedly showed good response and a promising effect on survival. Therefore, the Japan Clinical Oncology Group conducted a phase II trial to confirm the efficacy of S-1 for neoadjuvant chemotherapy against resectable scirrhous gastric cancer. METHODS: Patients were eligible if they had typical scirrhous gastric cancer invading more than half of the stomach, and resectable disease confirmed by laparoscopic staging. The treatment schedule consisted of two courses (each, 4-week administration and 2-week withdrawal) of S-1 (100-120 mg/body per day), followed by radical surgery. RESULTS: Fifty-five eligible patients were registered. Three completed only one course of the neoadjuvant chemotherapy, whereas 52 completed two courses. Toxicity was acceptable, with a few grade 3 (5.5%) events, but no grade 4 adverse events. The response rate was 32.6% in 43 evaluable patients. Of the 55 patients, 2 refused operation, 1 developed lung metastasis, and 52 underwent laparotomy. The curative resection rate was 80.8%, with acceptable morbidity and no mortality. The survival curve at 2 years' follow up showed a better survival rate than that of the historical controls, but did not reach the expected survival rate. CONCLUSION: S-1 neoadjuvant chemotherapy appeared feasible and showed positive effects against scirrhous gastric cancer; however, the survival rate with S-1 did not reach the expected rate required when selecting an agent for a phase III trial to confirm the effectiveness of neoadjuvant chemotherapy against scirrhous gastric cancer.
Assuntos
Adenocarcinoma Esquirroso/tratamento farmacológico , Antimetabólitos Antineoplásicos/uso terapêutico , Terapia Neoadjuvante , Ácido Oxônico/uso terapêutico , Neoplasias Gástricas/tratamento farmacológico , Tegafur/uso terapêutico , Adenocarcinoma Esquirroso/secundário , Adenocarcinoma Esquirroso/cirurgia , Adulto , Idoso , Quimioterapia Adjuvante , Terapia Combinada , Combinação de Medicamentos , Estudos de Viabilidade , Humanos , Japão , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prognóstico , Neoplasias Gástricas/patologia , Neoplasias Gástricas/cirurgia , Taxa de Sobrevida , Resultado do TratamentoRESUMO
OBJECTIVE: Our objective was to study the presence of a characteristic appearance of metastatic disease to the gastrointestinal tract on contrast-enhanced CT in patients with known malignancies and to investigate its clinical implications. CONCLUSION: Twenty-five patients with scirrhous metastases had a malignant CT target sign. Careful observation and correlation with clinical history are required to differentiate this unique sign from a benign target sign.
Assuntos
Adenocarcinoma Esquirroso/diagnóstico por imagem , Adenocarcinoma Esquirroso/secundário , Neoplasias Gastrointestinais/diagnóstico por imagem , Neoplasias Gastrointestinais/secundário , Tomografia Computadorizada por Raios X/métodos , Adulto , Idoso , Meios de Contraste , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Padrões de Referência , Estudos RetrospectivosRESUMO
CUB-domain-containing protein 1 (CDCP1) is a type-I transmembrane protein that is highly expressed in colon, breast, and lung cancers. We recently revealed that CDCP1 is associated with and phosphorylated by Src family kinases and is involved in the regulation of anchorage independence of certain lung cancer cell lines. In this study, we examined whether CDCP1 is involved in the regulation of tumor progression of scirrhous gastric cancer, which is a diffusely infiltrative carcinoma with high invasion potential. Expression and phosphorylation levels of CDCP1 correlated with the invasive potential of scirrhous gastric cancers. Reduction of CDCP1 expression by siRNA suppressed migration, invasion, and anchorage independence without affecting the proliferation of highly invasive scirrhous gastric cancer cells. However, CDCP1 overexpression promoted gastric cancer cell migration with low potential of invasion. Loss of CDCP1 suppressed invasion and dissemination of cancer cells that were orthotopically implanted in the gastric wall of nude mice. Expression and phosphorylation of CDCP1 were also detected in cancer cells of surgically resected tissues of human scirrhous gastric cancer by immunohistochemical analysis. Our results suggest that CDCP1 promotes invasion and peritoneal dissemination of cancer cells through the regulation of cell migration and anchorage independence. Therefore, it is both a potential prognostic and therapeutic target in certain types of gastrointestinal cancers, and suppression of its phosphorylation might be a useful strategy for modulating cancer metastasis.
Assuntos
Adenocarcinoma Esquirroso/metabolismo , Antígenos CD/fisiologia , Moléculas de Adesão Celular/fisiologia , Proteínas de Neoplasias/fisiologia , Neoplasias Peritoneais/metabolismo , Neoplasias Gástricas/metabolismo , Adenocarcinoma Esquirroso/secundário , Animais , Antígenos de Neoplasias , Linhagem Celular Tumoral , Movimento Celular , Humanos , Camundongos , Camundongos Nus , Invasividade Neoplásica , Transplante de Neoplasias , Neoplasias Peritoneais/secundário , Fosforilação , Neoplasias Gástricas/patologia , Transplante HeterólogoRESUMO
PURPOSE: Transforming growth factor beta receptor (TGFbeta-R) is reported to correlate with the malignant potential of scirrhous gastric carcinoma. The aim of the current study is to clarify the possibility of molecular target therapy with a TGFbeta-R inhibitor, A-77, for the treatment of peritoneal dissemination of scirrhous gastric cancer. EXPERIMENTAL DESIGN: Three scirrhous gastric cancer cell lines and two fibroblasts were used. For in vivo experiments, the A-77 was administered i.p. to mouse models of peritoneal dissemination. The influences of A-77 on the adhesion ability, invasion ability, and the expression of adhesion molecules were examined in vitro. RESULTS: The A-77 administration resulted in a significantly (P < 0.01) better prognosis for the mice with peritoneal dissemination (median survival time, 51 days), compared with the control (median survival time, 25 days). A-77 therefore significantly (P < 0.01) decreased the weight and number of metastatic nodes. The adhesive ability and invasion ability of cancer cells were significantly decreased by A-77. A-77 decreased the expression of alpha(2), alpha(3), and alpha(5) integrins in gastric cancer cells. The histologic findings showed the degree of fibrosis to be less in the tumors treated by A-77. A-77 decreased the growth of fibroblast and invasion-stimulating activity of fibroblasts on cancer cells. CONCLUSION: The TGFbeta-R inhibitor, A-77, decreased the expression of integrins in cancer cells and the proliferation of fibroblasts, which resulted in the decreased adhesive and invasive abilities of scirrhous gastric cancer cells to peritoneum. A-77 is thus considered to be useful for the inhibition of peritoneal dissemination of scirrhous gastric carcinoma.
Assuntos
Adenocarcinoma Esquirroso/tratamento farmacológico , Antineoplásicos/uso terapêutico , Metástase Neoplásica/prevenção & controle , Neoplasias Peritoneais/secundário , Pirazóis/uso terapêutico , Quinolinas/uso terapêutico , Receptores de Fatores de Crescimento Transformadores beta/antagonistas & inibidores , Neoplasias Gástricas/tratamento farmacológico , Adenocarcinoma Esquirroso/mortalidade , Adenocarcinoma Esquirroso/secundário , Animais , Antineoplásicos/farmacologia , Adesão Celular/efeitos dos fármacos , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Feminino , Humanos , Integrinas/metabolismo , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Nus , Invasividade Neoplásica , Neoplasias Peritoneais/prevenção & controle , Fosforilação , Pirazóis/farmacologia , Quinolinas/farmacologia , RNA Interferente Pequeno/metabolismo , Receptores de Fatores de Crescimento Transformadores beta/metabolismo , Proteína Smad2/metabolismo , Neoplasias Gástricas/mortalidade , Neoplasias Gástricas/secundárioRESUMO
BACKGROUND: The dose-response curve for anticancer agents cannot be evaluated by studying patients directly. To investigate individual differences in the dose-response curve for paclitaxel in breast cancer, we utilized the histoculture drug response assay (HDRA) technique. MATERIALS AND METHODS: Twenty specimens obtained from breast cancer patients who underwent surgical resection were used in this study. The inhibition rates of paclitaxel at several concentrations were measured and fitted to a sigmoid dose-response curve, using non-linear least squares analysis with the fitting equation y=A(1-1/(1+exp(B(x-log(C))))), where A denotes maximal response; B, slope factor; and C, ED50. RESULTS: A dose-response curve was obtained in all tumors. The mean value (+/-SD) of maximum response, slope factor, and ED50 were 90.2+/-5.5%, 9.4+/-4.3, and 36.8+/-17.2 microg/ml, respectively. The slope factor was higher in nuclear grade 3 tumors compared with nuclear grade 1 and 2 tumors. CONCLUSION: An individual dose-response curve for paclitaxel in breast cancer can be obtained using the HDRA technique. Nuclear grade 3 tumors appeared to have more uniform chemosensitivity to paclitaxel compared with nuclear grade 1 and 2 tumors.