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1.
J Surg Oncol ; 128(4): 604-611, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37409778

RESUMO

OBJECTIVES: Pleural metastasis has extremely poor prognosis. Resection of pleural implants with infusion of intrathoracic hyperthermic chemotherapy may offer a survival advantage in selected patients. We evaluated the safety and efficacy of hyperthermic intrathoracic extracorporeal chemotherapy (HITEC) in patients who underwent pleurectomy/decortication (P/D) for secondary malignant pleural disease (SPD). METHODS: A total of 101 patients were evaluated over 72 months, with 35 patients electing to proceed with P/D and 60 minutes of HITEC with cisplatin at 42°C. Inclusion criteria were adults 18-79 years with unilateral pleural dissemination. Exclusion criteria were patients without control of primary site, extrathoracic metastatic disease, significant comorbidities, and a history of adverse reaction to cisplatin. RESULTS: Median age was 56 years (36-73); 60% were women. SPD was thymoma in 13, breast cancer in 9, lung cancer in 6, colon cancer in 2, renal cell in 2, and esophageal, anal, and thymic cancers in one each. There was no operative mortality. Postoperative complications occurred in 18 patients (51%). No patient developed renal failure. Median follow-up was 24 months (4-60). The overall survival rate was 61%; 17 patients (49%) developed recurrent disease at a median of 12 months (6-36). There were no recurrences after 36 months Eleven patients (31%) died of metastatic disease at a median of 17 months (7-25). CONCLUSIONS: Surgical cytoreduction of SPD followed by HITEC with cisplatin was well tolerated. No patient developed cisplatin-related toxicities. Long-term follow-up is warranted to determine survival advantage and refinement of inclusion criteria.


Assuntos
Hipertermia Induzida , Mesotelioma , Doenças Pleurais , Neoplasias Pleurais , Neoplasias do Timo , Adulto , Humanos , Feminino , Pessoa de Meia-Idade , Masculino , Cisplatino , Terapia Combinada , Neoplasias Pleurais/tratamento farmacológico , Neoplasias Pleurais/patologia , Mesotelioma/terapia , Neoplasias do Timo/patologia
2.
Comput Biol Med ; 155: 106665, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36791552

RESUMO

Thymic epithelial tumors (TETs) are rare malignant tumors, and the molecular mechanisms of both primary and recurrent TETs are poorly understood. Here we established comprehensive proteomic signatures of 15 tumors (5 recurrent and 10 non-recurrent) and 15 pair wised tumor adjacent normal tissues. We then proposed an integrative network approach for studying the proteomics data by constructing protein-protein interaction networks based on differentially expressed proteins and a machine learning-based score, followed by network modular analysis, functional enrichment annotation and shortest path inference analysis. Network modular analysis revealed that primary and recurrent TETs shared certain common molecular mechanisms, including a spliceosome module consisting of RNA splicing and RNA processing, but the recurrent TET was specifically related to the ribosome pathway. Applying the shortest path inference to the collected seed gene module identified that the ribonucleoprotein hnRNPA2B1 probably serves as a potential target for recurrent TET therapy. The drug repositioning combined molecular dynamics simulations suggested that the compound ergotamine could potentially act as a repurposing drug to treat recurrent TETs by targeting hnRNPA2B1. Our study demonstrates the value of integrative network analysis to understand proteotype robustness and its relationships with genotype, and provides hits for further research on cancer therapeutics.


Assuntos
Neoplasias Epiteliais e Glandulares , Neoplasias do Timo , Humanos , Proteômica , Neoplasias do Timo/genética , Neoplasias do Timo/metabolismo , Neoplasias do Timo/patologia , Redes Reguladoras de Genes
3.
J Thorac Oncol ; 17(11): 1258-1275, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-36031176

RESUMO

INTRODUCTION: The aim of this guideline was to provide recommendations for the most effective therapy for patients with thymic epithelial tumors, including thymoma, thymic carcinoma, and thymic neuroendocrine tumors (NETs). This guideline is intended to be used by all health care professionals managing patients with thymic epithelial tumors. METHODS: The guideline was developed by Ontario Health (Cancer Care Ontario)'s Program in Evidence-Based Care and by the Lung Cancer Disease Site Group through a systematic review of the evidence, expert consensus, and formal internal and external reviews. RESULTS: Evidence-based recommendations were developed to improve the management of patients with thymic epithelial tumors. The guideline includes recommendations for surgical, radiation, and systemic treatments for patients with thymoma, thymic carcinoma, and thymic NETs separated by stage of disease using the TNM staging system. Recommendations for patients with thymic NETs were endorsed from the 2021 National Comprehensive Cancer Network Neuroendocrine and Adrenal Tumors Guideline. CONCLUSIONS: This guideline reflects the new staging system for patients with thymoma and thymic carcinoma and includes supporting evidence from the best available studies.


Assuntos
Neoplasias Pulmonares , Neoplasias Epiteliais e Glandulares , Tumores Neuroendócrinos , Timoma , Neoplasias do Timo , Humanos , Timoma/terapia , Timoma/patologia , Neoplasias Pulmonares/patologia , Neoplasias do Timo/terapia , Neoplasias do Timo/patologia , Neoplasias Epiteliais e Glandulares/terapia , Neoplasias Epiteliais e Glandulares/patologia , Estadiamento de Neoplasias , Tumores Neuroendócrinos/terapia , Tumores Neuroendócrinos/patologia , Estudos Retrospectivos
4.
BMJ Case Rep ; 15(6)2022 Jun 06.
Artigo em Inglês | MEDLINE | ID: mdl-35667693

RESUMO

Giant cell myositis (GCM) is a rare inflammatory myopathy associated with myasthenia gravis and thymoma. Here, we report on a woman in her late 50s with a history of myasthenia gravis, systemic lupus erythematosus and stage IV thymoma with pleural metastases, who presented with proximal weakness, neuromuscular respiratory failure and hypercalcaemia. She was diagnosed with GCM via muscle biopsy and screened for myocarditis but showed no evidence of myocardial involvement. Her hypercalcaemia was consistent with a granulomatous process, likely driven by her GCM. Her strength gradually improved, and her hypercalcaemia did not recur after treatment with high dose steroids, intravenous immune globulin and plasma exchange. Her course was complicated by several opportunistic infections in the setting of her immunosuppression. Despite the high morbidity associated with GCM, she demonstrated clinical improvement after initiating immunosuppressive therapy and continues to be managed in the outpatient setting.


Assuntos
Hipercalcemia , Miastenia Gravis , Miosite , Timoma , Neoplasias do Timo , Feminino , Células Gigantes/patologia , Humanos , Hipercalcemia/complicações , Miastenia Gravis/complicações , Miosite/diagnóstico , Recidiva Local de Neoplasia/patologia , Timoma/complicações , Timoma/patologia , Neoplasias do Timo/complicações , Neoplasias do Timo/patologia
5.
Respiration ; 100(12): 1165-1173, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34384085

RESUMO

BACKGROUND: Lung-sparing cytoreductive surgery by extended pleurectomy and decortication (EPD) in combination with hyperthermic intrathoracic chemoperfusion (HITOC) forms a promising treatment strategy for malignant pleural mesothelioma and recurrent pleural thymic malignancies. OBJECTIVES: The objective of this study was to scrutinize the surgical procedure and perioperative patient management with emphasis on perioperative morbidity and local tumor control. METHODS: In 2014, a standardized EPD and HITOC procedure was implemented at the Thoraxklinik Heidelberg. This retrospective analysis included clinical data of consecutive patients with pleural mesothelioma and pleural metastasized malignancies treated by EPD and HITOC. The surgical procedure, perioperative management, lung function data, and progression-free survival (PFS) were analyzed. RESULTS: In the time range between April 2, 2014 and July 2018, 76 patients with pleural malignancies have been treated with EPD and HITOC, and were analyzed retrospectively. It included 61 patients with pleural mesothelioma and 15 patients with pleural metastases of thymic malignancies (12), non-small cell lung cancer (1), colorectal carcinoma (1), and sarcoma (1). Perioperative morbidity following EPD and HITOC treatments represented 23.7% of overall malignancies, while 30- and 90-day mortality were 0 and 1.3%, respectively. Median PFS lasted 18.4 months for mesothelioma and 72.2 months for thymic malignancies. CONCLUSION: Combining EPD with HITOC can be performed in patients with either pleural mesothelioma or pleural metastases resulting in low perioperative morbidity and mortality as well as remarkable local tumor control.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Hipertermia Induzida , Neoplasias Pulmonares , Mesotelioma Maligno , Mesotelioma , Neoplasias Pleurais , Cirurgia Torácica , Neoplasias do Timo , Terapia Combinada , Procedimentos Cirúrgicos de Citorredução , Humanos , Neoplasias Pulmonares/terapia , Mesotelioma/cirurgia , Recidiva Local de Neoplasia , Neoplasias Pleurais/cirurgia , Estudos Retrospectivos , Neoplasias do Timo/patologia , Resultado do Tratamento
6.
Thorac Cardiovasc Surg ; 69(2): 157-164, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-31731316

RESUMO

BACKGROUND: Objective of this study was to assess postoperative morbidity and mortality as well as recurrence-free and overall survival in patients with thymic malignancies and pleural dissemination undergoing surgical cytoreduction and hyperthermic intrathoracic chemotherapy (HITOC). METHODS: Retrospective study between September 2008 and December 2017 with follow-up analysis in May 2018. RESULTS: A total of 29 patients (male: n = 17) with thymic malignancies and pleural spread (primary stage IVa: n = 11; pleural recurrence: n = 18) were included. Surgical cytoreduction was performed via pleurectomy/decortication (P/D; n = 11), extended P/D (n = 15), and extrapleural pneumonectomy (EPP; n = 3). These procedures resulted in 25 (86%) patients with macroscopically complete (R0/R1) resection. Intraoperative HITOC was performed for 60 minutes at 42°C either with cisplatin (100 mg/m2 body surface area [BSA] n = 8; 150 mg/m2 BSA n = 6; 175 mg/m2 BSA n = 1) or with a combination of cisplatin (175 mg/m2 BSA)/doxorubicin (65 mg; n = 14). Postoperative complications occurred in nine patients (31%). Cytoprotective therapy resulted in lower postoperative creatinine levels (p = 0.036), and there was no need for temporary dialysis in these patients. The 90-day mortality rate was 3.4%, as one patient developed multiple organ failure. While recurrence-free 5-year survival was 54%, an overall 5-year survival rate of 80.1% was observed. Survival depended on histological subtype (p = 0.01). CONCLUSION: Surgical cytoreduction with HITOC is feasible in selected patients and offers encouraging survival rates. The application of cytoprotective agents appears to be effective for the prevention of postoperative renal insufficiency.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Cisplatino/uso terapêutico , Procedimentos Cirúrgicos de Citorredução , Doxorrubicina/uso terapêutico , Hipertermia Induzida , Neoplasias Pleurais/terapia , Neoplasias do Timo/terapia , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Quimioterapia Adjuvante , Cisplatino/efeitos adversos , Procedimentos Cirúrgicos de Citorredução/efeitos adversos , Procedimentos Cirúrgicos de Citorredução/mortalidade , Progressão da Doença , Doxorrubicina/efeitos adversos , Feminino , Humanos , Hipertermia Induzida/efeitos adversos , Hipertermia Induzida/mortalidade , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Neoplasias Pleurais/mortalidade , Neoplasias Pleurais/secundário , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Neoplasias do Timo/mortalidade , Neoplasias do Timo/patologia , Fatores de Tempo , Resultado do Tratamento
7.
Interact Cardiovasc Thorac Surg ; 30(5): 765-772, 2020 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-32170942

RESUMO

OBJECTIVES: Recurrence of thymoma is described in 10-30% of cases after surgical resection. Iterative surgery for thymoma pleural relapses (TPRs) is often part of a multimodal treatment. Hyperthermic intrathoracic chemotherapy (HITHOC) following macroscopic radical surgery is an option that combines the effects of mild hyperthermia with those of chemotherapeutic agents. We evaluated the effectiveness of surgery + HITHOC, compared with surgery alone, in the treatment of TPR. METHODS: We retrospectively collected data of all patients who underwent surgery for TPR in our centre from 2005 to 2017. Relapses were treated by partial pleurectomy with radical intent, followed by HITHOC when not contraindicated. Patients were divided into 2 groups: surgery + HITHOC and surgery alone. We collected demographic and clinical data and analysed postoperative results together with oncological outcomes. RESULTS: Forty patients (27: surgery + HITHOC, 13: surgery alone), mean age 49.8 (±13.7) years, were included in this study. There were no perioperative deaths. We experienced 33.3% perioperative morbidity in the surgery + HITHOC group compared with 23.1% in the surgery alone group (P = 0.71). The overall survival rate was comparable between the 2 groups (P = 0.139), whereas the local disease-free interval was 88.0 ± 15 months in the surgery + HITHOC group and 57 ± 19.5 months in the surgery alone group (P = 0.046). The analysis of factors affecting the outcomes revealed that radical surgery is related with a better survival rate whereas the local disease-free interval was significantly influenced by HITHOC. CONCLUSIONS: The safety and feasibility of HITHOC in the treatment of TPR are already known, even if it should be reserved for selected patients. Surgery + HITHOC seems to be associated with a longer local disease-free time compared to surgery alone.


Assuntos
Antineoplásicos/administração & dosagem , Hipertermia Induzida , Recidiva Local de Neoplasia/terapia , Neoplasias Pleurais/terapia , Timoma/terapia , Neoplasias do Timo/terapia , Adulto , Idoso , Terapia Combinada , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/mortalidade , Recidiva Local de Neoplasia/patologia , Neoplasias Pleurais/mortalidade , Neoplasias Pleurais/patologia , Estudos Retrospectivos , Taxa de Sobrevida , Procedimentos Cirúrgicos Torácicos/métodos , Timoma/mortalidade , Timoma/patologia , Neoplasias do Timo/mortalidade , Neoplasias do Timo/patologia
8.
Int J Clin Oncol ; 24(4): 385-393, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30374687

RESUMO

BACKGROUND: For thymic epithelial tumors (TETs), the National Comprehensive Cancer Network guideline has suggested that complete excision of the tumor should be performed without a preoperative biopsy when resectable. However, little evidence has been provided to support this strategy. The purpose of this study was to review our diagnostic process and to evaluate the validity of radical resection of anterior mediastinal masses (AMMs) without pathological confirmation. METHODS: A total of 254 patients underwent surgical resection for AMMs between 2004 and 2015. This study included 181 patients with likely TETs according to clinical features, serum levels of tumor markers and autoimmune-antibodies, and radiological findings. In addition, AMMs likely TETs were classified into resectable or unresectable tumors. We retrospectively reviewed the diagnostic process of those patients and validated surgical resection of AMMs without a definitive diagnosis. RESULTS: Among 254 patients, 181 were suspected of having a TET based on the serum levels of tumor markers and autoimmune-antibodies and the radiological findings. Of them, 157 patients were deemed resectable and underwent surgical resection without histological confirmation, and 144 (92%) were diagnosed with TETs in the final pathological examinations. In 13 patients with non-TETs, the tumors were difficult to differentiate from TETs by imaging and clinical findings alone. CONCLUSIONS: A total of 92% of patients suspected of having a TET and who underwent complete resection without pathological confirmation were accurately diagnosed and properly treated. Surgical resection without a definitive diagnosis was feasible in patients suspected of having a TET when they were considered resectable.


Assuntos
Neoplasias do Mediastino/diagnóstico , Neoplasias Epiteliais e Glandulares/diagnóstico , Neoplasias do Timo/diagnóstico , Adolescente , Adulto , Idoso , Biomarcadores Tumorais/sangue , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Neoplasias do Mediastino/patologia , Neoplasias do Mediastino/cirurgia , Pessoa de Meia-Idade , Neoplasias Epiteliais e Glandulares/patologia , Neoplasias Epiteliais e Glandulares/cirurgia , Estudos Retrospectivos , Neoplasias do Timo/patologia , Neoplasias do Timo/cirurgia , Tomografia por Raios X
9.
Asian Pac J Cancer Prev ; 19(11): 3217-3223, 2018 Nov 29.
Artigo em Inglês | MEDLINE | ID: mdl-30486615

RESUMO

Fermented brown rice and rice bran with Aspergillus oryzae (FBRA) is known to possess potentials to prevent chemical carcinogenesis in multiple organs of rodents. In the present study, possible chemopreventive effect of FBRA against spontaneous occurrence of lymphomas was examined using female AKR/NSlc mice. Four-week-old female AKR/ NSlc mice were divided into three groups, and fed diets containing FBRA for 26 weeks at a dose level 0% (Group 1), 5% (Group 2) or 10% (Group 3). At the termination of experiment, the incidence of thymic malignant lymphoma of Group 3 was significantly lower than of Group 1 (p < 0.05). The average number of apoptotic cells of the thymic lymphoma of Group 3 was significantly larger than that of Group 1 (p < 0.05). In addition, the incidences of malignant lymphoma arising from body surface and abdominal lymph nodes, and the frequencies of lymphoma cell invasion to liver, kidney, spleen, and ovary of Group 3 were relatively lower than those of Group 1. These results indicate that FBRA inhibits spontaneous development of the lymphoma in female AKR/NSc mice and the inhibition of lymphomagenesis may relate to the induction of apoptosis by exposure of FBRA, suggesting that FBRA could be a protective agent against development of human lymphoma.


Assuntos
Ração Animal , Linfoma/prevenção & controle , Oryza/fisiologia , Fitoterapia , Neoplasias do Timo/prevenção & controle , Animais , Feminino , Fermentação , Linfoma/patologia , Camundongos , Camundongos Endogâmicos AKR , Oryza/química , Neoplasias do Timo/patologia
10.
Lancet Oncol ; 19(3): 347-355, 2018 03.
Artigo em Inglês | MEDLINE | ID: mdl-29395863

RESUMO

BACKGROUND: Treatment options are limited for patients with thymic carcinoma. These aggressive tumours are not typically associated with paraneoplastic autoimmune disorders, and strong PD-L1 expression has been reported in thymic epithelial tumours. We aimed to assess the activity of pembrolizumab, a monoclonal antibody that targets PD-1, in patients with advanced thymic carcinoma. METHODS: We completed a single-arm phase 2 study of pembrolizumab in patients with recurrent thymic carcinoma who had progressed after at least one line of chemotherapy. This was a single-centre study performed at Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA. Key inclusion criteria were an Eastern Cooperative Oncology Group performance status of 0-2, no history of autoimmune disease or other malignancy requiring treatment or laboratory abnormality, and adequate organ function. Patients received 200 mg of pembrolizumab every 3 weeks for up to 2 years. The primary objective of the study was the proportion of patients who had achieved a response assessed with Response Evaluation Criteria in Solid Tumors version 1.1. Analysis was per protocol, in all eligible patients. The study is registered with ClinicalTrials.gov, number NCT02364076, and is closed to accrual; we report the final analysis. FINDINGS: 41 patients were enrolled from March 12, 2015, to Dec 16, 2016, of whom 40 were eligible and evaluable and one was excluded because of elevated liver enzymes at screening. The median follow-up was 20 months (IQR 14-26). The proportion of patients who achieved a response was 22·5% (95% CI 10·8-38·5); one (3%) patient achieved a complete response, eight (20%) patients achieved partial responses, and 21 (53%) patients achieved stable disease. The most common grade 3 or 4 adverse events were increased aspartate aminotransferase and alanine aminotransferase (five [13%] patients each). Six (15%) patients developed severe autoimmune toxicity, including two (5%) patients with myocarditis. There were 17 deaths at the time of analysis, but no deaths due to toxicity. INTERPRETATION: Pembrolizumab is a promising treatment option in patients with thymic carcinoma. Because severe autoimmune disorders are more frequent in thymic carcinoma than in other tumour types, careful monitoring is essential. FUNDING: Merck & Co.


Assuntos
Anticorpos Monoclonais Humanizados/uso terapêutico , Antineoplásicos Imunológicos/uso terapêutico , Timoma/tratamento farmacológico , Neoplasias do Timo/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais Humanizados/efeitos adversos , Antineoplásicos Imunológicos/efeitos adversos , District of Columbia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Timoma/imunologia , Timoma/mortalidade , Timoma/patologia , Neoplasias do Timo/imunologia , Neoplasias do Timo/mortalidade , Neoplasias do Timo/patologia , Fatores de Tempo , Resultado do Tratamento
11.
Crit Rev Oncog ; 22(5-6): 507-514, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29604928

RESUMO

Thymic epithelial tumors (TETs), including thymoma and thymic carcinoma, are rare malignant tumors. The mainstay of treatment patients with TET is surgical resection, and chemotherapy is necessary for patients with tumor invasion or metastasis who are unable to undergo complete radical excision. However, for those patients who are resistant to chemotherapy, targeted therapy has become the most popular tumor treatment program, as well as for thymic tumors. Many genes implicated in tumorigenesis and metastasis have also been reported to be therapeutic targets in thymic malignancies. A significant advance in TET treatment may derive from the identification of novel molecular biomarkers that can improve the diagnosis, prognosis, and treatment of tumors. We review a number of case reports and small clinical trials reporting that a few inhibitors, such as sorafenib and sunitinib, are effective in the treatment of thymoma. In this review, we describe the current potential drug targets and their roles in the development of thymic malignancy.


Assuntos
Biomarcadores Tumorais/genética , Carcinogênese/genética , Neoplasias Epiteliais e Glandulares/tratamento farmacológico , Neoplasias Epiteliais e Glandulares/genética , Neoplasias do Timo/tratamento farmacológico , Neoplasias do Timo/genética , Humanos , Invasividade Neoplásica/genética , Metástase Neoplásica , Neoplasias Epiteliais e Glandulares/diagnóstico , Neoplasias Epiteliais e Glandulares/patologia , Prognóstico , Sorafenibe/uso terapêutico , Sunitinibe/uso terapêutico , Neoplasias do Timo/diagnóstico , Neoplasias do Timo/patologia
13.
Future Oncol ; 11(8): 1223-32, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25832879

RESUMO

Surgical resection remains the cornerstone of therapy for early-stage thymic epithelial tumors (TETs), while in advanced or recurrent forms, a multimodality approach incorporating radiation and chemotherapy is required. Given the absence of effective treatment options for metastatic/refractory TETs and the poor related prognosis, there is a compelling need to identify promising 'drugable' molecular targets. Initial reports of activity from targeted agents in TETs derived from anecdotal cases have been often associated with specific activating mutations. Only in recent years, several agents have been formally investigated into prospective clinical trials, with varying success rates. We reviewed the literature on targeted therapy in TETs along with two cases of thymoma achieving striking responses to sorafenib in combination with lapatinib.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Terapia de Alvo Molecular , Neoplasias Epiteliais e Glandulares/tratamento farmacológico , Neoplasias Pleurais/tratamento farmacológico , Inibidores de Proteínas Quinases/uso terapêutico , Neoplasias do Timo/tratamento farmacológico , Idoso , Receptores ErbB/antagonistas & inibidores , Feminino , Inibidores de Histona Desacetilases/uso terapêutico , Humanos , Lapatinib , Neoplasias Epiteliais e Glandulares/patologia , Neoplasias Epiteliais e Glandulares/cirurgia , Niacinamida/administração & dosagem , Niacinamida/análogos & derivados , Compostos de Fenilureia/administração & dosagem , Neoplasias Pleurais/secundário , Proteínas Proto-Oncogênicas c-kit/antagonistas & inibidores , Quinazolinas/administração & dosagem , Receptor IGF Tipo 1 , Receptores de Somatomedina/antagonistas & inibidores , Sorafenibe , Serina-Treonina Quinases TOR/antagonistas & inibidores , Neoplasias do Timo/patologia , Neoplasias do Timo/cirurgia , Adulto Jovem
14.
Free Radic Biol Med ; 83: 89-100, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25725417

RESUMO

The manganese porphyrin, manganese (III) meso-tetrakis N-ethylpyridinium-2-yl porphyrin (MnTE-2-PyP(5+)), acts as a pro-oxidant in the presence of intracellular H2O2. Mitochondria are the most prominent source of intracellular ROS and important regulators of the intrinsic apoptotic pathway. Due to the increased oxidants near and within the mitochondria, we hypothesized that the mitochondria are a target of the pro-oxidative activity of MnTE-2-PyP(5+) and that we could exploit this effect to enhance the chemotherapeutic response in lymphoma. In this study, we demonstrate that MnTE-2-PyP(5+) modulates the mitochondrial redox environment and sensitizes lymphoma cells to antilymphoma chemotherapeutics. MnTE-2-PyP(5+) increased dexamethasone-induced mitochondrial ROS and oxidation of the mitochondrial glutathione pool in lymphoma cells. The combination treatment induced glutathionylation of Complexes I, III, and IV in the electron transport chain, and decreased the activity of Complexes I and III, but not the activity of Complex IV. Treatment with the porphyrin and dexamethasone also decreased cellular ATP levels. Rho(0) malignant T-cells with impaired mitochondrial electron transport chain function were less sensitive to the combination treatment than wild-type cells. These findings suggest that mitochondria are important for the porphyrin's ability to enhance cell death. MnTE-2-PyP(5+) also augmented the effects of 2-deoxy-D-glucose (2DG), an antiglycolytic agent. In combination with 2DG, MnTE-2-PyP(5+) increased protein glutathionylation, decreased ATP levels more than 2DG treatment alone, and enhanced 2DG-induced cell death in primary B-ALL cells. MnTE-2-PyP(5+) did not enhance dexamethasone- or 2DG-induced cell death in normal cells. Our findings suggest that MnTE-2-PyP(5+) has potential as an adjuvant for the treatment of hematologic malignancies.


Assuntos
Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Complexo de Proteínas da Cadeia de Transporte de Elétrons/metabolismo , Metabolismo Energético/efeitos dos fármacos , Metaloporfirinas/farmacologia , Oxidantes/farmacologia , Leucemia-Linfoma Linfoblástico de Células Precursoras B/tratamento farmacológico , Neoplasias do Timo/tratamento farmacológico , Animais , Sobrevivência Celular/efeitos dos fármacos , Transporte de Elétrons/efeitos dos fármacos , Eletroforese em Gel Bidimensional , Glutationa/metabolismo , Peróxido de Hidrogênio/farmacologia , Camundongos , Mitocôndrias/efeitos dos fármacos , Mitocôndrias/metabolismo , Oxirredução , Leucemia-Linfoma Linfoblástico de Células Precursoras B/metabolismo , Leucemia-Linfoma Linfoblástico de Células Precursoras B/patologia , Proteômica , Espécies Reativas de Oxigênio/metabolismo , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por Matriz , Neoplasias do Timo/metabolismo , Neoplasias do Timo/patologia , Células Tumorais Cultivadas
15.
Anticancer Res ; 34(9): 5105-10, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-25202099

RESUMO

PURPOSE: To retrospectively evaluate sorafenib activity and safety in patients with metastatic thymic carcinoma (TC) and to correlate outcome with c-KIT and PDGFR-alpha mutational status. PATIENTS AND METHODS: Patients with metastatic thymic carcinoma treated with sorafenib after at least one prior line of chemotherapy were included. Objective response rate (ORR) and toxicity were evaluated. Analysis of c-KIT and PDGFR-alpha mutational status was performed retrospectively. RESULTS: From October 2007 to August 2011, 5 patients with metastatic thymic carcinoma were evaluated. A median of 8 cycles of sorafenib (range=3-29) were administered. Two patients (40%) displayed a partial response (PR), two patients presented stable disease (SD), while one patient had progression. The median progression-free (PFS) and overall survival were 28 weeks and 92 weeks, respectively. At mutational analysis, only one patient with PR had c-KIT mutation in exon 17 and was successfully treated with sunitinib for 12 months after progression to sorafenib. No PDGFR-alpha mutations were found. CONCLUSION: Sorafenib activity seems independent from the c-KIT and PDGFR-alpha mutational status. After progression, sequence treatment with a different tyrosine kinase inhibitor can be considered. These results are promising and need further confirmation on larger, possibly prospective, series of patients.


Assuntos
Mutação , Niacinamida/análogos & derivados , Compostos de Fenilureia/uso terapêutico , Proteínas Proto-Oncogênicas c-kit/genética , Receptor alfa de Fator de Crescimento Derivado de Plaquetas/genética , Timoma/tratamento farmacológico , Timoma/genética , Neoplasias do Timo/tratamento farmacológico , Neoplasias do Timo/genética , Idoso , Antineoplásicos/administração & dosagem , Antineoplásicos/efeitos adversos , Antineoplásicos/uso terapêutico , Análise Mutacional de DNA , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Niacinamida/administração & dosagem , Niacinamida/efeitos adversos , Niacinamida/uso terapêutico , Compostos de Fenilureia/administração & dosagem , Compostos de Fenilureia/efeitos adversos , Inibidores de Proteínas Quinases/administração & dosagem , Inibidores de Proteínas Quinases/efeitos adversos , Inibidores de Proteínas Quinases/uso terapêutico , Estudos Retrospectivos , Sorafenibe , Timoma/mortalidade , Timoma/patologia , Neoplasias do Timo/mortalidade , Neoplasias do Timo/patologia , Resultado do Tratamento
16.
Gan To Kagaku Ryoho ; 41(7): 879-83, 2014 Jul.
Artigo em Japonês | MEDLINE | ID: mdl-25131876

RESUMO

Thymic carcinoid is a rare disease that accounts for 3.1% of thymic tumors and 1.8-6% of all carcinoid tumors in Japan. Advanced thymic carcinoid has a 5-year survival rate of 28-31%.Compared with carcinoid tumors that arise in other organs, thyroid carcinoid tumors carry a relatively worse prognosis, and the most effective therapeutic strategy is thought to be surgical resection.However, for patients with recurrence and distant metastases, multimodal therapy including radiotherapy and/or chemotherapy is usually applied.No chemotherapy treatment regimen has been established in Japan, although the National Comprehensive Cancer Network Guidelines proposed the application of octreotide long-acting repeatable(LAR).In this report, we present two cases of thymic carcinoid that were treated with octreotide LAR and achieved long-term survival.


Assuntos
Antineoplásicos Hormonais/uso terapêutico , Tumor Carcinoide/tratamento farmacológico , Octreotida/uso terapêutico , Neoplasias do Timo/tratamento farmacológico , Idoso , Tumor Carcinoide/cirurgia , Terapia Combinada , Evolução Fatal , Humanos , Masculino , Neoplasias do Timo/patologia , Neoplasias do Timo/cirurgia , Fatores de Tempo
17.
Zentralbl Chir ; 138 Suppl 1: S52-7, 2013 Oct.
Artigo em Alemão | MEDLINE | ID: mdl-24150857

RESUMO

INTRODUCTION: Patients with pleural thymoma spread (Masaoka stage IV a) should be treated within a multimodal treatment regime. However, the extent of local surgical resection to achieve optimal tumour control remains controversial. PATIENTS AND METHODS: Prospective analysis between September 2008 and April 2013 of all patients with a Masaoka stage IV a thymoma, who underwent radical pleurectomy/decortication (P/D) followed by hyperthermic intrathoracic chemotherapy (HITHOC). RESULTS: A total of 11 patients (male n = 7; mean age 46.5 ± 11.4 years) with a primary stage IV a thymoma (n = 3) or thymoma with pleural relapse (n = 8) were included after successful transsternal thymoma resection. WHO histological classification was: B1 n = 1, B2 n = 6, B3 n = 3 and C n = 1. A radical P/D (5/11; 45 %) was extended with resection of the pericardium and diaphragm in 6/11 (55 %) patients. After surgical resection (91 % complete macroscopic R0/R1-resection) the HITHOC with cisplatin (100 mg/m2 body surface area (BSA) n = 7; 150 mg/m2 BSA n = 4) was performed for one hour at 42 °C. Operative revision was necessary in two patients (chylo- and hematothorax) with one patient also requiring temporary renal replacement therapy due acute renal failure (cisplatin 150 mg/m2 BSA). 30-day mortality was 0 %. Local recurrence (pulmonary n = 1, paravertebral n = 2) was documented in 3/10 (30 %) patients after R0/R1 resection. After a mean follow-up of 23 months the overall median survival was 27 months and 82 % (9/11) patients are still alive at the end of the study period. CONCLUSIONS: Masaoka stage IV a thymoma could be safely treated with lung-sparing radical P/D and HITHOC with cisplatin in a multimodality treatment regime. Early results with respect to recurrence and survival are encouraging, but further studies are warranted and we have to await long-term results.


Assuntos
Quimioterapia do Câncer por Perfusão Regional/métodos , Cisplatino/administração & dosagem , Hipertermia Induzida/métodos , Pleura/cirurgia , Neoplasias Pleurais/secundário , Neoplasias Pleurais/terapia , Timoma/secundário , Timoma/terapia , Neoplasias do Timo/terapia , Adulto , Cisplatino/efeitos adversos , Terapia Combinada , Relação Dose-Resposta a Droga , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Recidiva Local de Neoplasia/terapia , Estadiamento de Neoplasias , Neoplasias Pleurais/mortalidade , Neoplasias Pleurais/patologia , Estudos Prospectivos , Taxa de Sobrevida , Timoma/mortalidade , Timoma/patologia , Neoplasias do Timo/mortalidade , Neoplasias do Timo/patologia
18.
Int J Hyperthermia ; 29(7): 653-62, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24028146

RESUMO

PURPOSE: We retrospectively analysed the long-term outcomes of cytoreductive surgery and post-operative heated pleural chemotherapy (HPC) for thoracic malignancies with pleural spread. MATERIALS AND METHODS: Between 1987 and 2010, 160 patients were enrolled. There were 101 patients with non-small cell lung cancer (NSCLC), 25 with malignant pleural mesothelioma (MPM), 12 with thymoma, and 22 with tumours metastatic to the lung and pleura. Immediately after intra-thoracic administration of cisplatin or carboplatin, hyperthermia was performed by using an 8.00 MHz radiofrequency capacitive heating device for 1 to 4 courses in each patient. RESULTS: There was no systemic toxicity or treatment-related mortality. Five-year overall survival rates were 37.4% in NSCLC, 15.9% in MPM, 91.7% in thymoma, and 25.8% in metastatic lung tumour. Five-year local relapse-free survival (RFS) rates were 55.2% in NSCLC, 24.4% in MPM, 64.8% in thymoma, and 27.2% in tumours metastatic to the lung and pleura. When 101 NSCLCs were categorised into pleural lavage cytology positive (grade 1: n = 37), limited extent of carcinomatous pleuritis (grade 2: n = 21), and extensive carcinomatous pleuritis (grade 3: n = 43), 5-year overall survival rates were 62.5%, 49.2%, and 13.6%, respectively. The local RFS was significantly better in group 1/2 than in group 3. CONCLUSIONS: Although our study has some of the usual weaknesses of a single institution retrospective study, cytoreductive surgery and HPC are feasible and safe. It is suggested that HPC may have a potential role for local control as adjuvant treatment for cytoreductive surgery in patients with minor pleural spread.


Assuntos
Antineoplásicos/administração & dosagem , Hipertermia Induzida , Neoplasias Pleurais/terapia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma Pulmonar de Células não Pequenas/patologia , Terapia Combinada , Feminino , Humanos , Neoplasias Pulmonares/patologia , Masculino , Mesotelioma/patologia , Mesotelioma Maligno , Pessoa de Meia-Idade , Neoplasias Primárias Desconhecidas/patologia , Neoplasias Pleurais/secundário , Timoma/patologia , Neoplasias do Timo/patologia , Adulto Jovem
19.
Anticancer Res ; 33(7): 2917-9, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23780980

RESUMO

BACKGROUND: Immunotherapy has become an attractive new strategy in the treatment of cancer. The laboratory and clinical study of cancer immunotherapy is rapidly advancing. However, in the clinical setting, the results of cancer immunotherapy are mixed. We therefore contend that cancer immunotherapy should be customized to each patient individually based on their immune status and propose an integrative immunotherapy approach with second-generation group-specific component macrophage activating factor (GcMAF)-containing human serum. PATIENTS AND METHODS: The standard protocol of our integrative cancer immunotherapy is as follows: i) 0.5 ml GcMAF-containing human serum is administered intramuscularly or subcutaneously once or twice per week for the duration of cancer therapy until all cancer cells are eradicated; ii) hyper T/natural killer (NK) cell therapy is given once per week for six weeks; iii) high-dose vitamin C is administered intravenously twice per week; iv) alpha lipoic acid (600 mg) is administered orally daily; v) vitamin D3 (5,000-10,000 IU) is administered orally daily. RESULTS: By March 2013, Saisei Mirai have treated over 345 patients with GcMAF. Among them we here present the cases of three patients for whom our integrative immunotherapy was remarkably effective. CONCLUSION: The results of our integrative immunotherapy seem hopeful. We also plan to conduct a comparative clinical study.>


Assuntos
Neoplasias Ósseas/terapia , Imunoterapia , Neoplasias Hepáticas/terapia , Neoplasias Pulmonares/terapia , Fatores Ativadores de Macrófagos/administração & dosagem , Neoplasias da Próstata/terapia , Neoplasias do Timo/terapia , Proteína de Ligação a Vitamina D/administração & dosagem , Idoso , Ácido Ascórbico/administração & dosagem , Neoplasias Ósseas/imunologia , Neoplasias Ósseas/secundário , Terapia Baseada em Transplante de Células e Tecidos , Terapia Combinada , Feminino , Humanos , Injeções Intramusculares , Injeções Subcutâneas , Neoplasias Hepáticas/imunologia , Neoplasias Hepáticas/patologia , Neoplasias Pulmonares/imunologia , Neoplasias Pulmonares/secundário , Masculino , Prognóstico , Neoplasias da Próstata/imunologia , Neoplasias da Próstata/patologia , Ácido Tióctico/administração & dosagem , Neoplasias do Timo/imunologia , Neoplasias do Timo/patologia
20.
Chirurg ; 84(6): 492-6, 2013 Jun.
Artigo em Alemão | MEDLINE | ID: mdl-23595855

RESUMO

Trimodality treatment including induction and/or adjuvant chemotherapy, surgical resection and in some cases radiotherapy offers a curative intention in selected patients with pleural malignancies (malignant pleural mesothelioma, thymoma with pleural spread). Nevertheless, locoregional tumor recurrence mainly limits the outcome and the quality of life. A few years ago an additional intraoperative chemotherapy perfusion was developed in order to improve local tumor control and prognosis after surgical resection in a multimodality treatment setting. Cytoreductive surgery with the purpose of a macroscopic complete resection could be achieved by radical pleurectomy or extrapleural pneumonectomy. The concept, techniques and perioperative management of this additional treatment option are presented along with a detailed review of the recent literature.


Assuntos
Quimioterapia do Câncer por Perfusão Regional/métodos , Terapia Combinada , Hipertermia Induzida/métodos , Pleura/cirurgia , Neoplasias Pleurais/tratamento farmacológico , Neoplasias Pleurais/cirurgia , Pneumonectomia/métodos , Quimioterapia Adjuvante , Cisplatino/administração & dosagem , Cisplatino/efeitos adversos , Cuidados Críticos/métodos , Humanos , Período Intraoperatório , Pleura/patologia , Neoplasias Pleurais/patologia , Neoplasias Pleurais/secundário , Cuidados Pós-Operatórios/métodos , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/mortalidade , Taxa de Sobrevida , Timoma/tratamento farmacológico , Timoma/patologia , Timoma/secundário , Timoma/cirurgia , Neoplasias do Timo/tratamento farmacológico , Neoplasias do Timo/patologia , Neoplasias do Timo/cirurgia
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