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1.
Chinese Journal of Contemporary Pediatrics ; (12): 51-59, 2023.
Article in Chinese | WPRIM | ID: wpr-971039

ABSTRACT

OBJECTIVES@#To study the efficacy and safety of rituximab combined with chemotherapy in the treatment of children and adolescents with mature B-cell non-Hodgkin's lymphoma (B-NHL) through a Meta analysis.@*METHODS@#The databases including PubMed, Embase, the Cochrane Library, ClinicalTrials.gov, Web of Science, China National Knowledge Infrastructure, Wanfang Data, and Weipu were searched to obtain 10 articles on rituximab in the treatment of mature B-NHL in children and adolescents published up to June 2022, with 886 children in total. With 3-year event-free survival (EFS) rate, 3-year overall survival (OS) rate, complete remission rate, mortality rate, and incidence rate of adverse reactions as outcome measures, RevMan 5.4 software was used for Meta analysis, subgroup analysis, sensitivity analysis, and publication bias analysis.@*RESULTS@#The rituximab+chemotherapy group showed significant increases in the 3-year EFS rate (HR=0.38, 95%CI: 0.25-0.59, P<0.001), 3-year OS rate (HR=0.29, 95%CI: 0.14-0.61, P=0.001), and complete remission rate (OR=3.72, 95%CI: 1.89-7.33, P<0.001) as well as a significant reduction in the mortality rate (OR=0.31, 95%CI: 0.17-0.57, P<0.001), as compared with the chemotherapy group without rituximab. There was no significant difference in the incidence rate of adverse reactions between the two groups (OR=1.28, 95%CI: 0.85-1.92, P=0.24).@*CONCLUSIONS@#The addition of rituximab to the treatment regimen for children and adolescents with mature B-cell non-Hodgkin's lymphoma can bring significant survival benefits without increasing the incidence of adverse reactions.


Subject(s)
Child , Adolescent , Humans , Rituximab/adverse effects , Lymphoma, B-Cell/drug therapy , Progression-Free Survival , Remission Induction , China , Antineoplastic Combined Chemotherapy Protocols/therapeutic use
2.
Journal of Experimental Hematology ; (6): 965-969, 2022.
Article in Chinese | WPRIM | ID: wpr-939717

ABSTRACT

Zanubrutinib is a highly selective second-generation BTK inhibitor developed in China and first approved by the U.S. Food and Drug Administration (FDA) as a novel antineoplastic drug. In recent years, with the birth of molecularly targeted drugs, the treatment of B-cell lymphoma have entered the era of targeted therapy, and immunotherapy has been widely accepted. Especially in some relapsed and refractory lymphomas, zanubrutinib has shown deep and sustained remissions and a favorable safety, which lays a foundation for precision therapy. In this review the clinical application and new progress for zanubrutinib in B-cell lymphoma was summarized briefly.


Subject(s)
Humans , Lymphoma, B-Cell/drug therapy , Piperidines/therapeutic use , Protein Kinase Inhibitors/therapeutic use , Pyrazoles/therapeutic use , Pyrimidines/therapeutic use
3.
Arq. bras. cardiol ; 110(3): 219-228, Mar. 2018. tab, graf
Article in English | LILACS | ID: biblio-888028

ABSTRACT

Abstract Background: Anthracycline generates progressive left ventricular dysfunction associated with a poor prognosis. Objectives: The purpose of this study was to evaluate whether layer-specific strain analysis could assess the subclinical left ventricular dysfunction after exposure to anthracycline. Methods: Forty-two anthracycline-treated survivors of large B-cell non-Hodgkin lymphoma, aged 55.83 ± 17.92 years (chemotherapy group) and 27 healthy volunteers, aged 51.39 ± 13.40 years (control group) were enrolled. The cumulative dose of epirubicin in chemotherapy group was 319.67 ± 71.71mg/m2. The time from last dose of epirubicin to the echocardiographic examination was 52.92 ± 22.32 months. Global longitudinal (GLS), circumferential (GCS) and radial strain (GRS), subendocardial, mid and subepicardial layer of longitudinal (LS-ENDO, LS-MID, LS-EPI) and circumferential strain (CS-ENDO, CS-MID, CS-EPI) values were analyzed. Transmural strain gradient was calculated as differences in peak systolic strain between the subendocardial and subepicardial layers. A value of p < 0.05 was considered significant. Results: Conventional parameters of systolic and diastolic function showed no significant difference between two groups. Compared with controls, patients had significantly lower GCS and GLS. Multi-layer speckle tracking analysis showed significant reduction of circumferential strain of subendocardial layer, transmural CS gradient and longitudinal strain of all three layers. In contrast, the two groups did not differ in transmural longitudinal strain gradient and radial strains. Conclusions: It proved the preferential impairment of subendocardial deformation in long-term survivors after exposure to anthracycline. Multi-layer speckle tracking echocardiography might facilitate the longitudinal follow-up of this at-risk patient cohort.


Resumo Fundamentos: A antraciclina gera uma disfunção ventricular esquerda progressiva associada a um prognóstico ruim. Objetivos: O propósito deste estudo foi avaliar se a análise layer específico de strain poderia avaliar disfunção ventricular esquerda subclínica após exposição a antraciclina. Métodos: Foram inscritos quarenta e dois sobreviventes tratados com antraciclina por linfoma não Hodgkin de células B grandes, de 55,83 ± 17,92 anos (grupo de quimioterapia) e 27 voluntários saudáveis, de 51,39 ± 13,40 anos (grupo controle). A dose cumulativa de epirrubicina no grupo de quimioterapia foi de 319,67 ± 71,71 mg/m2. O tempo desde a última dose de epirrubicina até o exame ecocardiográfico foi de 52,92 ± 22,32 meses. Analisaram-se o strain longitudinal global (GLS), o circunferencial (GCS) e o strain radial (GRS), os valores das camadas subendocárdica, média e subepicárdica so strain longitudinal (LS-ENDO, LS-MID, LS-EPI) e do strain circunferencial (CS-ENDO, CS-MID, CS-EPI). O gradiente de strain transmural foi calculado como a diferença no strain sistólico pico entre as camadas subendocárdicas e subepicárdicas. Um valor de p < 0,05 foi considerado significativo. Resultados: Os parâmetros convencionais da função sistólica e diastólica não mostraram diferenças significativas entre dois grupos. Comparados aos controles, os pacientes apresentaram GCS e GLS significativamente menores. A análise de speckle tracking multi-layer mostrou uma redução significativa no strain circunferencial da camada subendocárdica, o gradiente transmural CS e o strain longitudinal das três camadas. Em contraste, os dois grupos não diferiram no gradiente de strain longitudinal transmural e de strain radiais. Conclusões: Provou-se a deterioração preferencial do strain subendocárdico em sobreviventes de longa duração após exposição à antraciclina. O ecocardiograma de speckle tracking multi-layer pode facilitar o acompanhamento longitudinal dessa coorte de pacientes em risco. (Arq Bras Cardiol. 2018; 110(3):219-228)


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Young Adult , Echocardiography/methods , Lymphoma, B-Cell/drug therapy , Ventricular Dysfunction, Left/chemically induced , Ventricular Dysfunction, Left/diagnostic imaging , Anthracyclines/adverse effects , Antibiotics, Antineoplastic/adverse effects , Reference Values , Stroke Volume/drug effects , Stroke Volume/physiology , Epirubicin/therapeutic use , Case-Control Studies , Observer Variation , Cross-Sectional Studies , Risk Factors , Analysis of Variance , Follow-Up Studies , Ventricular Dysfunction, Left/physiopathology , Statistics, Nonparametric , Cardiotoxicity/etiology , Cardiotoxicity/diagnostic imaging , Heart/drug effects , Heart/physiopathology , Myocardium/pathology
4.
Brasília; CONITEC; mar. 2017. ilus, tab.
Non-conventional in Portuguese | LILACS, BRISA | ID: biblio-905656

ABSTRACT

CONTEXTO: O linfoma não Hodgkin (LNH) é um câncer do tecido linfático, que causa aumento dos gânglios desse tecido e sintomas generalizados. A forma difusa de grandes células B (LDGCB) é o mais comum dos LNH agressivos, correspondendo a 40% dos novos casos diagnosticados e aproximadamente 30% de todos os casos registrados de LNH. É caracterizado pela proliferação maligna de linfócitos encontrados em vários estágios, formando um tumor com malignidade moderada a grave e com significativa heterogeneidade. Também tem a presença de células B com alto índice proliferativo, e manutenção com a natureza agressiva da doença. Os LDGCB podem manifestar sintomas relacionados ao crescimento rápido dos linfonodos, os quais são frequentemente cervicais e abdominais. TECNOLOGIA: Rituximabe subcutâneo (MabThera®SC®). INDICAÇÃO: Linfoma não Hodgkin difuso de grandes células B, CD20 positivo, em combinação à quimioterapia. TECNOLOGIA: Rituximabe subcutâneo (MabThera®SC®). INDICAÇÃO: Linfoma não Hodgkin difuso de grandes células B, CD20 positivo, em combinação à quimioterapia. PERGUNTA: O uso de rituximabe por via subcutânea é eficaz e seguro em pacientes com LNH difuso de grandes células B quando comparado ao rituximabe por via intravenosa? EVIDÊNCIAS CIENTÍFICAS: Um ensaio clínico randomizado, fase III, com o objetivo de avaliar a nãoinferioridade farmacocinética de rituximabe por via subcutânea (SC) 1.400mg versus rituximabe por via intravenosa (IV) 375mg/m2 combinado com quimioterapia, em pacientes com linfoma folicular CD20 positivo grau 1-3ª, e também para investigar se a via de administração SC prejudicaria a atividade antilinfoma do rituximabe. A média de concentração sérica mínima (Ctrough) foi 83,13 µg/ml no grupo IV e 134,58 µg/ml no grupo SC (Razão de 1,62, IC 90%: 1,36-1,94), mostrando a não inferioridade de rituximabe SC. O perfil de eventos adversos também foi similar em ambos os grupos. Os resultados sugerem a não inferioridade da formulação subcutânea do medicamento em relação à intravenosa. AVALIAÇÃO DE CUSTO-MINIMIZAÇÃO: No modelo de custo-minimização, foram comparados o rituximabe SC com a apresentação IV. Os resultados da análise apontam para custos de tratamento equivalentes entre ambas as formulações, indicando que a incorporação da formulação subcutânea ao SUS não deverá proporcionar gastos adicionais ao sistema. Na análise de sensibilidade a única variável da análise que foi considerada foi a superfície corpórea média, que influencia diretamente no custo total de tratamento. A superfície corporal implicou uma variação de ± R$ 3.486,84 nos gastos anuais. AVALIAÇÃO DE IMPACTO ORÇAMENTÁRIO: O preço proposto para incorporação do medicamento é igual ao custo anual de tratamento do rituximabe intravenoso (já disponível no SUS). Desse modo, independente da taxa de difusão da tecnologia ao longo do tempo ou da população que de fato irá migrar para a nova apresentação, o impacto orçamentário incremental com a incorporação da nova tecnologia será nulo. RECOMENDAÇÃO DA CONITEC: Após discussão sobre as evidências apresentadas, na 51ª reunião da CONITEC, realizada nos dias 30 de novembro e 1º de dezembro de 2016, o plenário recomendou preliminarmente a não incorporação do medicamento rituximabe subcutâneo para linfoma Não-Hodgkin Difuso de Grandes Células B. A matéria será disponibilizada em Consulta Pública com recomendação preliminar não favorável. CONSULTA PÚBLICA: O relatório foi colocado em Consulta Pública nº 48/2016, entre os dias 26/12/2016 e 06/02/2017. Foram recebidas 73 contribuições, sendo 16 pelo formulário para contribuições técnico-científicas e 57 pelo formulário para contribuições sobre experiência ou opinião. A grande maioria das contribuições foram contrárias à recomendação inicial da CONITEC. DELIBERAÇÃO FINAL: Os membros do plenário da CONITEC presentes na reunião do dia 09/03/2017 deliberaram, por unanimidade, recomendar a não incorporação do rituximabe SC para o tratamento de linfoma não Hodgkin difuso de grandes células B, CD20 positivo. As razões da não incorporação foram a expiração da patente do rituximabe IV, além da existência de PDP para produção do rituximabe IV pelo SUS. Dessa forma, os preços do rituximabe IV serão reduzidos. Por outro lado, a patente do rituximabe SC foi depositada no Brasil no ano de 2010 e, de acordo com o INPI, a validade da patente de invenção é de 20 anos a partir da data do depósito. Ademais, os estudos mostraram maior risco de ocorrência de reações adversas relacionadas à administração com a forma SC do que com a forma IV. Com a forma IV, é possível reduzir a velocidade de infusão ou mesmo interrompê-la, caso o paciente apresente alguma reação adversa durante a administração do medicamento. Ainda, o tratamento com rituximabe possui um tempo de duração definido, de 6 a 8 ciclos de administração, não sendo necessário seu uso contínuo.(AU)


Subject(s)
Humans , Lymphoma, B-Cell/drug therapy , Lymphoma, Non-Hodgkin/drug therapy , Rituximab/therapeutic use , Brazil , Cost-Benefit Analysis/economics , Technology Assessment, Biomedical , Unified Health System
5.
Article in English | IMSEAR | ID: sea-163457

ABSTRACT

Introduced in 1998, the anti-CD20 monoclonal antibody rituximab, with its unique mechanism of action, was the first agent to improve survival in patients with B-cell lymphoma (BCL) treated with chemotherapy. Laboratory investigation of the B-cell receptor signaling pathway identified the critical nature of this pathway for normal B-cell development, survival and proliferation. Further investigation showed that lymphoma cell lines were also dependent upon this pathway and hence small molecule inhibitors of critical proteins in the pathway were synthesized and shown to be cytotoxic. Subsequent translation to the clinic has shown impressive activity in some types of B-cell lymphoma. The aim of this article is to provide an overview of the constituents of the BCR signaling pathway, to illustrate how addiction to this pathway is critical for survival of some BCL, and to summarize the clinical experience with novel small molecule inhibitors of specific proteins in the BCR pathway. We speculate that combination of these agents with newer drugs, each with a unique mechanism of action might lead to improved therapy and the eventual elimination of standard chemotherapy from our therapeutic arsenal.


Subject(s)
Lymphoma, B-Cell/drug therapy , Lymphoma, B-Cell/physiology , Lymphoma, B-Cell/therapy , Receptors, Antigen, B-Cell/drug effects
6.
J. bras. nefrol ; 36(4): 476-481, Oct-Dec/2014. tab, graf
Article in Portuguese | LILACS | ID: lil-731152

ABSTRACT

Introdução: Dados nacionais sobre diálise crônica têm tido impacto no planejamento do tratamento. Objetivo: Apresentar dados do inquérito da Sociedade Brasileira de Nefrologia sobre os pacientes com doença renal crônica em tratamento dialítico em julho de 2013 e comparar com dados de 2011- 12. Métodos: Levantamento de dados de unidades de diálise do país. A coleta de dados foi feita utilizando questionário preenchido on-line pelas unidades de diálise. Resultados: Trezentos e trinta e quatro (51%) unidades responderam ao inquérito. Em julho de 2013, o número total estimado de pacientes em diálise foi de 100.397. As estimativas nacionais das taxas de prevalência e de incidência de tratamento dialítico foram de 499 (variação: 284 na região Norte e 622 na Sul) e 170 pacientes por milhão da população, respectivamente. O número estimado de pacientes que iniciaram tratamento em 2013 foi 34.161. A taxa anual de mortalidade bruta foi de 17,9%. Dos pacientes prevalentes, 31,4% tinham idade ≥ 65 anos, 90,8% estavam em hemodiálise e 9,2% em diálise peritoneal, 31.351 (31,2%) estavam em fila de espera para transplante, 30% tinham diabetes, 17% tinham PTH > 600 pg/ml e 23% hemoglobina < 10 g/dl. Cateter venoso era usado como acesso em 15,4% dos pacientes em hemodiálise. Conclusão: O número absoluto de pacientes em diálise tem aumentado 3% ao ano nos últimos 3 anos. As taxas de prevalência e incidência de pacientes em diálise ficaram estáveis, e a taxa de mortalidade tendeu a diminuir em relação a 2012. Houve tendência a melhor controle da anemia e dos níveis de PTH. .


Introduction: National chronic dialysis data have had impact in the treatment planning. Objective: To report data of the annual survey of the Brazilian Society of Nephrology about chronic kidney disease patients on dialysis in July 2013 and compare with 2011-12. Methods: A survey based on data of dialysis units from the whole country. The data collection was performed by using a questionnaire filled out on-line by the dialysis units. Results: Three hundred thirty four (51%) of the dialysis units in the country answered the questionnaire. In July 2013, the total estimated number of patients on dialysis was 100,397. The estimated prevalence and incidence rates of chronic maintenance dialysis were 449 (range: 284 in the North region and 622 in the South) and 170 patients per million population, respectively. The estimated number of new patients starting dialysis in 2013 was 34,161. The annual gross mortality rate was 17.9%. For prevalent patients, 31.4% were aged 65 years or older, 90.8% were on hemodialysis and 9.2% on peritoneal dialysis, 31,351 (31.2%) were on a waiting list of renal transplant, 30% were diabetics, 17% had PTH levels > 600 pg/ml and 23% hemoglobin < 10 g/ dl. A venous catheter was the vascular access for 15.4% of the hemodialysis patients. Conclusion: The absolute number of patients on dialysis has increased 3% per year. The prevalence and incidence rates of patients on dialysis leveled off, while the mortality rate tended to decrease compared with 2012. There was a trend towards a better control of the anemia and PTH levels. .


Subject(s)
Animals , Mice , Cellular Senescence/physiology , /physiology , Lymphoma, B-Cell/etiology , Lymphoma, B-Cell/genetics , /physiology , Ubiquitin-Protein Ligases , Antineoplastic Agents, Alkylating/therapeutic use , Apoptosis/genetics , Apoptosis/physiology , Biomarkers , Cellular Senescence/drug effects , Cellular Senescence/genetics , Cell Survival/drug effects , Cell Survival/genetics , Cell Survival/physiology , /genetics , Cyclophosphamide/therapeutic use , Drug Resistance, Neoplasm/genetics , Drug Resistance, Neoplasm/physiology , Lymphoma, B-Cell/drug therapy , Mice, Knockout , Mice, Mutant Strains , Mutation , Prognosis , Proto-Oncogene Proteins c-cbl , /metabolism , Proto-Oncogene Proteins/genetics , Proto-Oncogene Proteins/metabolism , Tumor Cells, Cultured , /genetics , /physiology , /genetics
7.
An. bras. dermatol ; 89(4): 675-676, Jul-Aug/2014. graf
Article in English | LILACS | ID: lil-715529

ABSTRACT

We report the case of a 81-year-old female patient who had a two-year history of violet-colored erythematous tumors on both legs. Histopathological and immunohistochemical examinations confirmed the diagnosis of primary cutaneous large B-cell lymphoma, leg type. This rare, cutaneous lymphoma affects predominantly elderly females. Clinically, patients present with tumoral lesions on one or both legs (worst prognosis). Diagnosis is based on clinical, histopathological and immunohistochemical findings. The strong expression of BCL2, BCL6, MUM-1 and CD20, and the positivity for Ki67 antigen confirm the diagnosis. R-CHOP chemotherapy regimen (rituximab, cyclophosphamide, doxorubicin, vincristine and prednisone) is the most widely accepted treatment.


Subject(s)
Humans , Female , Aged, 80 and over , Skin Neoplasms/pathology , Lymphoma, B-Cell/pathology , Skin Neoplasms/drug therapy , Immunohistochemistry , Lymphoma, B-Cell/drug therapy , Treatment Outcome , Fatal Outcome , Leg
8.
Brasília; CONITEC; ago. 2013. tab, ilus.
Monography in Portuguese | LILACS, BRISA | ID: biblio-836799

ABSTRACT

Tecnologia: rituximabe (MabThera®). Indicação: 1ª linha de tratamento do linfoma não-Hodgkin de células B, folicular, CD20 positivo (indução em combinação com quimioterapia, seguido pela manutenção, após resposta à terapia inicial). Comparador: Quimioterapia padrão (QT) + observação. Demandante: Produtos Roche Químicos e Farmacêuticos S.A. Contexto: O Linfoma não-Hodgkin (LNH) é um câncer do tecido linfático, que causa aumento dos gânglios linfáticos e sintomas generalizados. É uma doença incurável, com média de sobrevida entre 6 a 10 anos. Nos estádios iniciais (I e II), a radioterapia é o tratamento de escolha e resulta em índices de sobrevida global em 10 anos entre 60-80%, com sobrevida média aproximada de 19 anos. A maioria dos pacientes tem doença em estádio avançado (III e IV) no momento do diagnóstico, sendo indicada a quimioterapia. Os pacientes assintomáticos não necessitam de tratamento imediato. O rituximabe já está incorporado no SUS para o tratamento de outras duas doenças: linfoma não-Hodgkin difuso de grandes células B e artrite reumatoide. Evidências científicas: Os estudos apresentados pelo demandante e pelo PTC elaborado pelo Departamento de Ciência e Tecnologia (DECIT/SCTIE/MS) mostraram que o tratamento de indução com rituximabe + QT aumentou significativamente a sobrevida global comparado a QT sozinho. Estes estudos apresentaram boa qualidade metodológica, mas com limitações relacionadas às características dos estudos primários, como diversos esquemas de QT utilizados e a inclusão de pacientes refratários ou em recaída. O tratamento de manutenção foi avaliado por uma metanálise, que não mostrou diferença estatisticamente significativa na sobrevida global nos pacientes tratados com rituximabe em 1ª linha em comparação com a observação. Essa metanálise mostrou resultados favoráveis apenas em pacientes refratários nos tratamentos anteriores ou que tiveram recaída da doença. Avaliação econômica: O estudo de custo-efetividade enviado pelo demandante apresentou grandes limitações que prejudicaram a clareza das informações, dentre elas a utilização de um modelo de Markov cuja pergunta de pesquisa foi diferente da proposta apresentada pelo demandante, tendo como objetivo avaliar o uso do tratamento de manutenção com rituximabe e partindo do pressuposto que todos os pacientes já utilizam o rituximabe em indução. Decisão: a recomendação inicial da CONITEC foi pela não incorporação da tecnologia. A consulta pública recebeu 34 contribuições e, após a análise das mesmas, o plenário decidiu por manter a recomendação de não incorporação do Rituximabe, da forma como foi a solicitação do demandante (indução + manutenção), para o tratamento do linfoma não-hodgkin de células B, folicular, CD20 positivo. No entanto, o plenário reconheceu que o medicamento possui importante papel no tratamento da doença em questão no que diz respeito ao chamado tratamento de indução. Desta forma, a Secretaria de Atenção à Saúde - SAS/MS apresentou uma análise para melhor definir o uso do medicamento no SUS, assim como o seu impacto orçamentário. O relatório com essa análise será publicada em consulta pública seguindo os mesmos tramites das demais solicitações de incorporações de tecnologias feitas à CONITEC.


Subject(s)
Humans , Lymphoma, B-Cell/drug therapy , Lymphoma, Follicular/drug therapy , Lymphoma, Non-Hodgkin/drug therapy , Rituximab/administration & dosage , Brazil , Health Evaluation/economics , Technology Assessment, Biomedical , Unified Health System
9.
West Indian med. j ; 62(1): 89-91, Jan. 2013. tab
Article in English | LILACS | ID: biblio-1045595

ABSTRACT

Primary isolated bone marrow disease as a presenting feature of lymphoma is very rare. We describe the case of a Chinese with isolated bone marrow small B-cell lymphoma as a first manifestation. A 55-year old woman was admitted to our hospital with fever. Her peripheral blood smear and laboratory findings were suggestive of bicytopenia. Bone marrow specimen showed diffusely distributed small-sized lymphocytes. Combined with immunophenotypic and chromosomal analysis, a diagnosis of primary bone marrow B-cell non-Hodgkin's lymphoma was made. The patient was treated with R-CHOP (rituximab and cyclophosphamide, epirubicin, vindesine, and prednisone) regimen for six cycles. She had complete remission and is still alive without relapse. We concluded that primary bone marrow mature small B-cell lymphoma is a rare but distinctive subtype of lymphoma. The prognosis for this entity is poor but rituximab-based treatment is promising for improving its outcomes.


La enfermedad aislada primaria de la médula ósea como rasgo de manifestación del linfoma es muy rara. Describimos el caso de una paciente china con linfoma aislado de células B pequeñas en la médula como una primera manifestación. Se trata de una mujer de 55 años que ingresara a nuestro hospital con fiebre. El frotis de sangre periférica y los hallazgos de laboratorio apuntaban a una bicitopenia. El espécimen de la médula ósea mostró la presencia de linfocitos de pequeño tamaño distribuidos de manera difusa. En combinación con un análisis inmunofenotípico y un análisis cromosómico, se realizó un diagnóstico de linfoma primario no Hodgkin de células B de la médula ósea. La paciente recibió como tratamiento un régimen de seis ciclos de R-CHOP (rituximab, ciclofosfamida, epirubicina, vindesina, y prednisona). Esto le permitió alcanzar una remisión completa, y todavía está viva sin que se haya producido recaída alguna. Concluimos que el linfoma primario de células B pequeñas maduras de la médula ósea es un subtipo raro pero particular de linfoma. La prognosis para esta entidad es pobre, pero el tratamiento a base de rituximab re-basado resulta promisorio en cuanto a mejorar su evolución clínica.


Subject(s)
Humans , Female , Middle Aged , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Lymphoma, B-Cell/drug therapy , Bone Marrow Neoplasms/drug therapy , Antineoplastic Agents/administration & dosage , Vincristine/administration & dosage , Remission Induction , Prednisone/administration & dosage , Doxorubicin/administration & dosage , Treatment Outcome , Cyclophosphamide/administration & dosage , Rituximab/administration & dosage
10.
Biocell ; 36(2): 91-95, Aug. 2012. graf
Article in English | LILACS | ID: lil-662146

ABSTRACT

We have already shown that IL-10 plays an important role in immunosuppression and metastatic dissemination in the rat B-cell lymphoma L-TACB model. It was suggested that the up-regulation of IL-10 production and IL-10 receptor (IL-10R) expression would be part of the transition from primary tumor to metastatic phenotype and that IL-10, besides its immunosuppressive activity, may act as a growth factor for metastatic L-TACB cells. The treatment of L-TACB-bearing rats with a single low-dose cyclophosphamide decreased IL-10 production, reverted immunosuppression and induced the immunologic rejection of tumor metastasis without any effect on primary tumor growth. Our current aim was to investigate the effects of cyclophosphamide on the expression of IL-10 and IL-10R on primary and metastatic L-TACB cells. Considering that cyclophosphamide is a prodrug, we used mafosfamide, a compound that yields in vitro the same active metabolites as cyclophosphamide does in vivo. Mafosfamide induced down-regulation of IL-10 production and IL-10R expression on metastatic cells and, concomitantly, inhibited metastatic cell proliferation. We suggest that mafosfamide would inhibit the regulatory loop mediated by the IL-10/IL-10R system and, as a consequence, metastatic cell proliferation. These results may have a considerable impact on the design of new therapies for metastatic lymphomas.


Subject(s)
Animals , Rats , Antineoplastic Agents/pharmacology , Cyclophosphamide/analogs & derivatives , /antagonists & inhibitors , Lymphoma, B-Cell/drug therapy , Lymphoma, B-Cell/metabolism , /antagonists & inhibitors , Cell Proliferation/drug effects , Cyclophosphamide/pharmacology , Enzyme-Linked Immunosorbent Assay , /metabolism , Lymphatic Metastasis , Lymphoma, B-Cell/pathology , /metabolism , Tumor Cells, Cultured
11.
Indian J Pathol Microbiol ; 2011 Jul-Sept 54(3): 591-593
Article in English | IMSEAR | ID: sea-142052

ABSTRACT

Primary cardiac lymphoma (PCL) is a rare and fatal disorder. It may often mimic other common cardiac tumors like cardiac myxoma because of similarities in the clinical presentation. We report a case of PCL of diffuse large B-cell type, in a 38-year-old, immunocompetent male who presented with superior vena cava syndrome that was excised as a myxoma. Histology revealed a large cell population diffusely and strongly expressing CD45, CD20, MUM1/IRF4 and FOXP1 hinting at an activated B-cell (ABC)-like phenotype. After four cycles of Rituximab with CHOP (cyclophosphamide, hydroxydaunorubicin, Oncovin, and prednisolone) the tumor regressed completely but the patient had a relapse and subsequently succumbed to the disease confirming the aggressive nature. The aggressive behavior of PCL may be possibly linked to its ABC-like origin.


Subject(s)
Adult , Antibodies, Monoclonal, Murine-Derived/administration & dosage , Antigens, CD20/biosynthesis , Leukocyte Common Antigens/biosynthesis , Antineoplastic Agents/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/administration & dosage , B-Lymphocytes/immunology , Cyclophosphamide/administration & dosage , Doxorubicin/administration & dosage , Fatal Outcome , Forkhead Transcription Factors/biosynthesis , Gene Expression Profiling , Heart Neoplasms/complications , Heart Neoplasms/diagnosis , Heart Neoplasms/drug therapy , Heart Neoplasms/pathology , Histocytochemistry , Humans , Immunohistochemistry , Interferon Regulatory Factors/biosynthesis , Lymphoma, B-Cell/complications , Lymphoma, B-Cell/diagnosis , Lymphoma, B-Cell/drug therapy , Lymphoma, B-Cell/pathology , Male , Microscopy , Phenotype , Prednisone/administration & dosage , Radiography, Thoracic , Recurrence , Repressor Proteins/biosynthesis , Superior Vena Cava Syndrome/diagnosis , Superior Vena Cava Syndrome/pathology , Tomography, X-Ray Computed , Treatment Outcome , Vincristine/administration & dosage
12.
Pakistan Journal of Medical Sciences. 2010; 26 (3): 726-728
in English | IMEMR | ID: emr-97749

ABSTRACT

This is a report of a 75 year old woman wrongly diagnosed and managed as a case of abdominal tuberculosis and peptic ulcer disease with no improvement in symptoms before a definitive diagnosis of low grade B-cell lymphoma was made with immunohistochemistry. She was completely free of symptoms after two of four courses of R-CVP [Rituximab- Cyclophosphamide, Vincristine, and Prednisolone]. A plea is made for appropriate investigation in order to avoid wasteful spending of patient's resources and undue exposure of patient to poor management


Subject(s)
Humans , Female , Aged , Lymphoma, B-Cell/diagnosis , Lymphoma, B-Cell , Lymphoma, B-Cell/drug therapy , Immunohistochemistry
13.
Medical Sciences Journal of Islamic Azad University. 2009; 19 (2): 87-92
in Persian | IMEMR | ID: emr-102101

ABSTRACT

Apoptosis or programmed cell death [PCD] is an important mechanism in both development and homeostasis of human tissues for the removal of superfluous cells and its induction is an effective method in the treatment of cancer. The aim of this study was the evaluation of induced apoptosis of apigenin in the human B cell lymphoma. In this experimental study, three human lymphoma B cells were cultured in RPMI1610, supplemented with 10% fetal calf serum, peniciline-streptomycin and L-glutamine, at 37°C for 2 days. Cancer cell lines were treated by apigenin and Cellular vital capacity was determined by MTT. Then, effects of apigenen on human lymphoma B cells were examined by flowcytometry technique. During MTT, human lymphoma B cell line revealed significant apoptosis at 10, 15 and 20 micro g/ml concentrations compared with controls [p<0.01]. Flowcytometry assay showed that apoptotic bodies were significantly different in three human lymphoma B cells and 48 hours was appropriate time for inducing apoptosis. This study revealed the anticancer effects of apigenin and its effect on apoptosis on human lymphoma B cells in vitro


Subject(s)
Lymphoma, B-Cell/drug therapy , Apoptosis/drug effects , Antineoplastic Combined Chemotherapy Protocols , Flow Cytometry , Glutamine , Penicillins , Streptomycin
14.
Indian J Pathol Microbiol ; 2007 Oct; 50(4): 877-80
Article in English | IMSEAR | ID: sea-75114

ABSTRACT

Primary cutaneous lymphoma designates a heterogenous group of disorders arising from skin T and B cells with no evidence of extra cutaneous disease at the time of diagnosis and six months thereafter. We report the cytomorphological features of a case of primary cutaneous lymphoma, B cell type in a 60 year old female presenting with multiple large bosselated red coloured swellings all over the scalp. Clinical examination revealed no other swelling or lymphadenopathy. On cytology a diagnosis of B-cell cutaneous lymphoid hyperplasia (B-CLH) was given, however cutaneous lymphoma could not be ruled out. On biopsy and immuno-histochemistry a diagnosis of primary cutaneous lymphoma B cell type was made. Patient was started on specific chemotherapy of lymphoma to which she responded completely. Here we highlight the cytomorphologic, histopathological and immunohistochemical features of this rare lesion with a particular emphasis on the diagnostic dilemma encountered on cytology.


Subject(s)
Antineoplastic Agents/therapeutic use , Biopsy , Female , Humans , Immunohistochemistry , Lymphoma, B-Cell/drug therapy , Middle Aged , Scalp/pathology , Skin Neoplasms/drug therapy
16.
Int. braz. j. urol ; 32(1): 64-65, Jan.-Feb. 2006. ilus
Article in English | LILACS | ID: lil-425498

ABSTRACT

We report a primary lymphoma of the prostate, which arose in a 29-year-old man with hematuria. Pathological evaluation of tissue fragments allowed us to choose appropriate medical management. A diagnosis of suspicion can be performed by urine cytology, and molecular techniques may be helpful. Emphasis in differential diagnosis is made.


Subject(s)
Humans , Male , Adult , Lymphoma, Large B-Cell, Diffuse , Lymphoma, B-Cell/pathology , Prostatic Neoplasms/pathology , Lymphoma, Large B-Cell, Diffuse , Lymphoma, B-Cell/drug therapy , Prostatic Neoplasms/drug therapy
17.
Rev. méd. Chile ; 132(11): 1403-1406, nov. 2004. ilus
Article in Spanish | LILACS | ID: lil-391846

ABSTRACT

We report a 78 year old male with prostatism, that was subjected to a prostate biopsy. The pathological study showed a microvascular lymphocytic infiltration. Four months later, the patients presentd with reduced alertness, cough, dyspnea, fever and elevation of lactic dehydrogenase and erythrocyte sedimentation rate. Chest and abdominal CAT scans, bone marrow aspirate, protein electrophoresis and prostate specific antigen were normal. A re-evaluation of prostate biopsy showed an intravascular lymphoid infiltration, positive for CD45 and CD20, compatible with the diagnosis of intravascular lymphoma. Chemotherapy was started, but it was not tolerated by the patient and the response was partial. Therefore, treatment with monoclonal antibodies anti CD20 (Rituximab) was started. The tumor had a complete and prolonged (24 months) remission after the treatment.


Subject(s)
Humans , Male , Aged , Antibodies, Monoclonal/therapeutic use , /therapeutic use , Antineoplastic Agents/therapeutic use , Lymphoma, Non-Hodgkin/pathology , Vascular Neoplasms/pathology , Biopsy , Endoscopy, Gastrointestinal , Hospitalization , Lymphocytes, Tumor-Infiltrating/pathology , Lymphoma, B-Cell/drug therapy , Lymphoma, B-Cell/pathology , Lymphoma, Non-Hodgkin/drug therapy , Vascular Neoplasms/drug therapy
18.
Rev. méd. Chile ; 132(11): 1407-1411, nov. 2004. ilus
Article in Spanish | LILACS | ID: lil-391847

ABSTRACT

Bacterial meningitis of otological origin is caused by the pass of bacteria from a suppurated otitis to the central nervous system. Patients subjected to otological surgery have a higher risk of contracting it. We report a 30 years old female with a history of non progressive long lasting hear loss in the left ear, that suffered two episodes of bacterial meningitis after being subjected to a stapedotomy. Temporal CAT scan revealed a malformation of the inner ear. An exploratory tympanostomy showed a perilymphatic fistula that was repaired.


Subject(s)
Humans , Male , Aged , Diagnostic Techniques, Otological , Meningitis, Bacterial/microbiology , Meningoencephalitis/surgery , Neisseria meningitidis/isolation & purification , Recurrence , Suppuration/complications , Tomography, X-Ray Computed , Biopsy , Endoscopy, Gastrointestinal , Hospitalization , Lymphocytes, Tumor-Infiltrating/pathology , Lymphoma, B-Cell/drug therapy , Lymphoma, B-Cell/pathology , Lymphoma, Non-Hodgkin/drug therapy , Vascular Neoplasms/drug therapy
19.
Journal of Korean Medical Science ; : 327-329, 1999.
Article in English | WPRIM | ID: wpr-60002

ABSTRACT

Combination chemotherapy and radiation therapy have contributed to the successful treatment of various cancer patients. But the development of second malignancies is an inevitable complication of long-term cytotoxic treatment. The most serious and frequent of such complications is acute myelogenous leukemia (AML). Therapy-related leukemia is generally fatal. Since the number of patients exposed to chemotherapy is increasing each year, the clinical significance of this entity cannot be underestimated. There have been many investigations of therapy-related leukemia, but in Korea published reports are rare. We describe four such cases, involving one older female with lung cancer and three children with acute lymphoblastic leukemia (ALL) and malignant lymphoma. Alkylating agents were used for chemotherapy, and in one case, topoisomerase II inhibitor. Irrespective of the causative agents, the latency periods were relatively short, and despite induction chemotherapy in two, all survived for only a few months. During the follow-up of patients treated for primary malignancies, the possibility of therapy-related leukemia should always be borne in mind.


Subject(s)
Aged , Child , Female , Humans , Male , Adolescent , Antineoplastic Agents, Alkylating/therapeutic use , Antineoplastic Agents, Alkylating/adverse effects , Carcinoma, Small Cell/radiotherapy , Carcinoma, Small Cell/drug therapy , DNA Topoisomerases, Type II/antagonists & inhibitors , Fatal Outcome , Precursor Cell Lymphoblastic Leukemia-Lymphoma/drug therapy , Leukemia, Monocytic, Acute/etiology , Leukemia, Myeloid, Acute/etiology , Leukemia, Myelomonocytic, Acute/etiology , Lung Neoplasms/radiotherapy , Lung Neoplasms/drug therapy , Lymphoma, B-Cell/radiotherapy , Lymphoma, B-Cell/drug therapy , Neoplasms, Second Primary/etiology
20.
Rev. bras. clín. ter ; 24(1): 37-9, jan. 1997. ilus
Article in Portuguese | LILACS | ID: lil-208233

ABSTRACT

Linfomas cutâneos de células B fazem parte de um grupo heterogêneo de alteraçöes do sistema linforreticular que que podem acometer a pele. Nesta apresentaçäo relatamos o caso de um paciente que apresentava dados clínicos, histopatológicos e imunoistoquímicos compatíveis com o diagnóstico de linfoma cutâneo de células B. Durante o estadiamento se encontrou comprometimento da medula óssea. O paciente foi tratado com quimioterapia sistêmica e radioterapia localizada, havendo a regressäo das lesöes.


Subject(s)
Humans , Male , Adult , Lymphoma, B-Cell/pathology , Skin Neoplasms/pathology , Skin/pathology , Lymphoma, B-Cell/drug therapy , Lymphoma, B-Cell/immunology , Lymphoma, B-Cell/radiotherapy , Lymphoma, Non-Hodgkin , Neoplasm Staging
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