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1.
AJNR Am J Neuroradiol ; 45(2): 139-148, 2024 02 07.
Artigo em Inglês | MEDLINE | ID: mdl-38164572

RESUMO

Resting-state (rs) fMRI has been shown to be useful for preoperative mapping of functional areas in patients with brain tumors and epilepsy. However, its lack of standardization limits its widespread use and hinders multicenter collaboration. The American Society of Functional Neuroradiology, American Society of Pediatric Neuroradiology, and the American Society of Neuroradiology Functional and Diffusion MR Imaging Study Group recommend specific rs-fMRI acquisition approaches and preprocessing steps that will further support rs-fMRI for future clinical use. A task force with expertise in fMRI from multiple institutions provided recommendations on the rs-fMRI steps needed for mapping of language, motor, and visual areas in adult and pediatric patients with brain tumor and epilepsy. These were based on an extensive literature review and expert consensus.Following rs-fMRI acquisition parameters are recommended: minimum 6-minute acquisition time; scan with eyes open with fixation; obtain rs-fMRI before both task-based fMRI and contrast administration; temporal resolution of ≤2 seconds; scanner field strength of 3T or higher. The following rs-fMRI preprocessing steps and parameters are recommended: motion correction (seed-based correlation analysis [SBC], independent component analysis [ICA]); despiking (SBC); volume censoring (SBC, ICA); nuisance regression of CSF and white matter signals (SBC); head motion regression (SBC, ICA); bandpass filtering (SBC, ICA); and spatial smoothing with a kernel size that is twice the effective voxel size (SBC, ICA).The consensus recommendations put forth for rs-fMRI acquisition and preprocessing steps will aid in standardization of practice and guide rs-fMRI program development across institutions. Standardized rs-fMRI protocols and processing pipelines are essential for multicenter trials and to implement rs-fMRI as part of standard clinical practice.


Assuntos
Neoplasias Encefálicas , Epilepsia , Humanos , Criança , Adulto , Mapeamento Encefálico/métodos , Imageamento por Ressonância Magnética/métodos , Neoplasias Encefálicas/diagnóstico por imagem , Neoplasias Encefálicas/cirurgia , Epilepsia/diagnóstico por imagem , Epilepsia/cirurgia , Idioma , Encéfalo/diagnóstico por imagem
2.
AJNR Am J Neuroradiol ; 34(6): 1150-6, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23153869

RESUMO

BACKGROUND AND PURPOSE: Frontolimbic circuits are involved in learning and decision-making processes thought to be affected in substance-dependent individuals. We investigated frontolimbic cortical morphometry in substance-dependent men and women and determined whether morphometric measurements correlated with decision-making performance. MATERIALS AND METHODS: Twenty-eight abstinent SDI (17 men/11 women) were compared with 28 controls (13 men/15 women). Cortical thicknesses and volumes were computed by using FreeSurfer. After controlling for age and intracranial volume, group and sex effects were analyzed in 3 a priori regions of interest: the insula, orbitofrontal cortex, and anterior cingulate cortex by using analysis of covariance. A secondary whole-brain analysis was conducted to verify region-of-interest results and to explore potential differences in other brain regions. RESULTS: Region-of-interest analyses revealed a main effect of group on the left insula cortex, which was thinner in SDI compared with controls (P = .02). There was a group by sex interaction on bilateral insula volume (left, P = .02; right, P = .001) and right insula cortical thickness (P = .007). Compared with same-sex controls, female SDI had smaller insulae, whereas male SDI had larger insulae. Neither ACC nor OFC significantly differed across group. Performance on a decision-making task was better in controls than SDI and correlated with OFC measurements in the controls. CONCLUSIONS: SDI and controls differed in insula morphology, and those differences were modulated by sex. No group differences in OFC were observed, but OFC measurements correlated with negative-reinforcement learning in controls. These preliminary results are consistent with a hypothesis that frontolimbic pathways may be involved in behaviors related to substance dependence.


Assuntos
Córtex Cerebral/patologia , Lobo Frontal/patologia , Sistema Límbico/patologia , Imageamento por Ressonância Magnética/métodos , Caracteres Sexuais , Transtornos Relacionados ao Uso de Substâncias/patologia , Adulto , Alcoolismo/patologia , Transtornos Relacionados ao Uso de Anfetaminas/patologia , Mapeamento Encefálico/métodos , Transtornos Relacionados ao Uso de Cocaína/patologia , Feminino , Giro do Cíngulo/patologia , Dependência de Heroína/patologia , Hipocampo/patologia , Humanos , Masculino , Vias Neurais , Testes Neuropsicológicos , Fumar/patologia
3.
Biomed Chromatogr ; 15(4): 240-7, 2001 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-11438964

RESUMO

Three methods for the determination of rat hepatocellular thiols by high-performance liquid chromatography (HPLC) with fluorescence (FL) detection have been developed. The thiols in the cells were tagged with three fluorogenic reagents, SBD-F, ABD-F and DBD-F. These reagents could permeate into cells and effectively reacted with thiols to produce highly fluorescent derivatives. These derivatives fluoresced in the long wavelength region at around 530 nm (excitation at around 380 nm). The five biological thiols tagged were perfectly separated by reversed-phase liquid chromatography and were sensitively and selectively detected without any interference from endogenous substanaces. The main thiol in the cells was reduced GSH and the concentration was at the mM level. The proposed procedures were applied to the determination of hepatocellular GSH after treatment of environmental pollutants such as volatile organic compounds (VOC) and endocrine disrupting chemicals (EDC). From the comparison of intracellular GSH concentration, the test compounds were classified into four groups: compounds of strong depletion (eg triphenyltin chloride, hexachlorocyclohexene, nonylphenol, bromoacetic acid, 4-chlorobenzyl chloride and 1,3-dichloropropene), slight decrease (eg bisphenol A, benzo[a]pylene, carbon tetrachloride and benzene), slight increase (eg bromoform and toluene), and no effect (eg 1,1,1-trichloroethane, 1,1,2-trichloroethane and 1,2-dichloroethane). Although the decrease of GSH concentration does not reflect the cytotoxicity of chemicals, the proposed procedure utilizing isolated rat hepatpcytes seems to be useful for investigating the bioactivation of VOC, and EDC, etc.


Assuntos
Cromatografia Líquida de Alta Pressão/métodos , Poluentes Ambientais/toxicidade , Glutationa/análise , Hepatócitos/química , Animais , Sobrevivência Celular/efeitos dos fármacos , Células Cultivadas , Corantes Fluorescentes/química , Hepatócitos/efeitos dos fármacos , Masculino , Ratos , Ratos Wistar , Espectrometria de Fluorescência
4.
Bone Marrow Transplant ; 27(3): 307-10, 2001 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-11277179

RESUMO

Eighty patients receiving hematological stem cell transplantation (HCT) with a preparative regimen consisting of total body irradiation (12.5 Gy), cyclophosphamide (4000 or 4500 mg/m2), and thiotepa (400 mg/m2) were evaluated for the development of cardiac toxicity. Patients in whom the pretransplant cumulative dose of anthracycline was more than or equal to 300 mg/m2 showed a lower left ventricular ejection fraction (EF) before HCT compared to patients with less than 300 mg/m2 (0.61 +/- 0.09 vs 0.67 +/- 0.06, P = 0.0010). Patients who had undergone more than or equal to six courses of chemotherapy showed a decreased EF before HCT compared to those after less than six courses (0.67 +/- 0.05 vs 0.63 +/- 0.09, P = 0.03). Three of seven patients (43%) whose pretransplant EF had been less than or equal to 0.55 developed severe cardiac toxicity, characterized by congestive heart failure (CHF) compared with none of 83 patients (0%) whose pretransplant EF had been more than 0.55 (P = 0.00026). Of the three patients who developed severe cardiac toxicity, two were given more than 300 mg/m2 of cumulative anthracycline and underwent 23 courses and six courses of chemotherapy, while the other patient received only two courses of chemotherapy with a total dose of 139 mg/m2 of anthracycline. These results indicate that an increased cumulative dose of anthracycline and number of chemotherapy treatments are correlated with a decrease of the EF and that the EF before HCT is useful for predicting the risk of cardiac complications for recipients who have received chemotherapy.


Assuntos
Insuficiência Cardíaca/etiologia , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Adolescente , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/toxicidade , Ciclofosfamida/administração & dosagem , Ciclofosfamida/toxicidade , Relação Dose-Resposta a Droga , Feminino , Insuficiência Cardíaca/diagnóstico , Insuficiência Cardíaca/fisiopatologia , Neoplasias Hematológicas/complicações , Neoplasias Hematológicas/terapia , Transplante de Células-Tronco Hematopoéticas/mortalidade , Humanos , Masculino , Valor Preditivo dos Testes , Prognóstico , Estudos Retrospectivos , Volume Sistólico/fisiologia , Tiotepa/administração & dosagem , Tiotepa/toxicidade , Irradiação Corporal Total
5.
Rinsho Ketsueki ; 41(7): 568-75, 2000 Jul.
Artigo em Japonês | MEDLINE | ID: mdl-11020980

RESUMO

Seventy-one patients aged 61-84 years with previously untreated aggressive non-Hodgkin's lymphoma were treated with a doxorubicin-containing regimen and evaluated retrospectively. The patients comprised 49 men and 22 women with a median age of 68 years. The median observation period was 544 days. Histological examination revealed 17 cases of diffuse small cleaved, 11 cases of diffuse mixed, 40 cases of diffuse large, and 3 cases of immunoblastic lymphoma, classified according to the International Working Formulation. When the patients were divided according to the age-adjusted international index, group A (61-64 years; n = 21) comprised 5 low (L)-, 4 low-intermediate (LI)-, 7 high-intermediate (HI)-, and 5 high (H)-risk patients. The corresponding numbers in group B (> or = 65 years; n = 50) were 14, 12, 16, and 8, respectively. The overall three-year survival rate was 50%, being 78% in group A and 36% in group B (P = 0.02), and 77% for L + LI patients and 34% for HI + H patients (P = 0.003). The respective three-year survival rates for L + LI and HI + H patients were 100% and 67% in group A, and 68% and 16% in group B. HI + H patients in group B showed shorter survival than L + LI patients in group B (P = 0.002) and HI + H patients in group A (P = 0.03). The cause of death in most group B HI + H patients was lymphoma, although the dose intensity of doxorubicin, cyclophosphamide and vincristine did not differ significantly from that in the other groups. Thus, HI + H patients aged 65 and over had an essentially poor prognosis.


Assuntos
Linfoma não Hodgkin/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Bleomicina/administração & dosagem , Ciclofosfamida/uso terapêutico , Doxorrubicina/uso terapêutico , Feminino , Humanos , Linfoma não Hodgkin/mortalidade , Masculino , Metotrexato/administração & dosagem , Pessoa de Meia-Idade , Prednisona/uso terapêutico , Estudos Retrospectivos , Resultado do Tratamento , Vincristina/uso terapêutico
6.
Leuk Lymphoma ; 38(3-4): 335-43, 2000 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-10830740

RESUMO

Factors predictive for central nervous system (CNS) involvement at presentation were investigated in 152 patients with non-Hodgkin's lymphoma (NHL) except for lymphoblastic cell lymphoma and small noncleaved cell lymphoma. Twelve patients developed CNS involvement during their disease course. The incidence was 7.9% of all the patients studied and 17.0% of the patients with serum LDH concentration > or = two times the upper limit of normal (2N). By univariate analysis, stage IV disease (P = .023), a serum LDH concentration > or = 2 N (P = .009), and bone marrow involvement (P = .016) were risk factors for CNS involvement. Multivariate logistic regression analysis identified a serum LDH concentration > or = 2 N (P = .032) as an independent predictor for CNS involvement. All 12 patients who developed CNS involvement were among the 126 patients with diffuse lymphoma, whereas none of the 17 patients with follicular lymphoma developed CNS involvement, although the difference was not statistically significant. The median survival of the patients with CNS involvement was only 4.5 months. We conclude that a serum LDH concentration > or = 2N at presentation is a significant predictive factor for CNS involvement for NHL patients without lymphoblastic lymphoma and small noncleaved cell lymphoma. Therefore, we would suggest that CNS prophylaxis should be considered for patients with a serum LDH concentration > or = 2N at presentation and diffuse lymphoma once a complete remission is achieved.


Assuntos
Biomarcadores Tumorais/sangue , Sistema Nervoso Central/patologia , L-Lactato Desidrogenase/sangue , Linfoma não Hodgkin/patologia , Meninges/patologia , Proteínas de Neoplasias/sangue , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Bleomicina/administração & dosagem , Terapia Combinada , Irradiação Craniana , Ciclofosfamida/administração & dosagem , Citarabina/administração & dosagem , Doxorrubicina/administração & dosagem , Humanos , Incidência , Leucovorina/administração & dosagem , Tábuas de Vida , Linfoma não Hodgkin/classificação , Linfoma não Hodgkin/tratamento farmacológico , Linfoma não Hodgkin/enzimologia , Linfoma não Hodgkin/mortalidade , Linfoma não Hodgkin/radioterapia , Metotrexato/administração & dosagem , Exame Neurológico , Valor Preditivo dos Testes , Prednisolona/administração & dosagem , Prednisona/administração & dosagem , Análise de Sobrevida , Resultado do Tratamento , Vincristina/administração & dosagem
7.
Am J Hematol ; 64(1): 32-8, 2000 May.
Artigo em Inglês | MEDLINE | ID: mdl-10815785

RESUMO

Hepatic veno-occlusive disease (VOD) is a common transplant-related complication of stem cell transplantation. There is no safe and proven therapy for established VOD, and attempts have focused on its prevention. Limited studies have suggested that prophylactic use of ursodeoxycholic acid (UDCA) reduced the incidence of VOD. To confirm the preventive effect of UDCA on VOD, we conducted a prospective, unblinded randomized, multicenter study of UDCA involving 132 patients who underwent stem cell transplantation for a variety of disorders. Sixty-seven patients were assigned to the UDCA-treated group, and 65 patients were assigned to the control group. The clinical characteristics of the two groups were similar with respect to primary diagnosis, age, sex, and baseline organ function. The preparative regimen and GVHD prophylaxis did not differ significantly between the two groups. UDCA was highly effective in preventing VOD, which occurred in only 3.0% in the UDCA-treated group, as opposed to 18.5% in the control group (P = 0.0043). There were no adverse effects attributable to UDCA. The initial promising report of a prophylactic effect of UDCA on VOD after stem cell transplantation was confirmed in this prospective study.


Assuntos
Colagogos e Coleréticos/administração & dosagem , Neoplasias Hematológicas/terapia , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Hepatopatia Veno-Oclusiva/prevenção & controle , Ácido Ursodesoxicólico/administração & dosagem , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Terapia Combinada , Feminino , Hepatopatia Veno-Oclusiva/etiologia , Humanos , Masculino , Resultado do Tratamento
8.
Am J Hematol ; 63(3): 131-5, 2000 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10679802

RESUMO

Serum thrombopoietin (TPO) levels in 50 essential thrombocythemia (ET) patients were measured using a highly sensitive sandwich ELISA. In nine cases, TPO levels were measured at two points with different platelet counts. ET patients showed significantly higher serum TPO levels (n = 59, 2.70 +/- 2.74 fmol/mL, P < 0.0001) than those of normal individuals (n = 29, 0.83 +/- 0.36 fmol/mL). Twenty-three previously untreated ET patients also showed significantly higher serum TPO levels (1.33 +/- 0.75 fmol/mL, P = 0.0066) than normal individuals. Extremely high serum TPO levels (5.46 +/- 3.68 fmol/mL) were observed in ET patients with normal platelet counts. Furthermore, a strong inverse correlation was found between serum TPO levels and platelet counts in ET patients (R = -0.729, P < 0. 0001). This inverse correlation also held for each of nine cases with two-point TPO measurements. In the clinical course of ET, megakaryocyte mass may parallel the platelet mass before and after chemotherapy. Although it is unknown whether overproduction of TPO exists or not in ET, total platelet and megakaryocyte mass, i.e., the total number of c-Mpl, may play a role to regulate serum TPO levels.


Assuntos
Contagem de Plaquetas , Trombocitemia Essencial/sangue , Trombopoetina/sangue , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Casos e Controles , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
9.
Rinsho Ketsueki ; 41(11): 1158-63, 2000 Nov.
Artigo em Japonês | MEDLINE | ID: mdl-11193433

RESUMO

A 45-year-old man was diagnosed as having Ph1+ acute lymphocytic leukemia (ALL) in February 1997. Complete remission was achieved by chemotherapy. Allogeneic BMT from his HLA-identical sister was performed on June 11, 1997. Engraftment was relatively quick, but acute GVHD (grade I) developed. The patient was discharged on day 113. Seven months after BMT, in January 1998, exertional dyspnea developed gradually. Chest X-ray examination showed diffuse interstitial pneumonia, for which corticosteroid was started immediately. The symptoms and signs gradually improved. However, on the 20th hospital day (February 23), bilateral subcutaneous emphysema developed in the neck and supraclavicular region. Chest X-ray and CT examinations showed pneumomediastinum without pneumothorax. The pneumomediastinum and subcutaneous emphysema gradually subsided after 3 weeks of bed rest. Subcutaneous emphysema and pneumomediastinum are relatively rare complications of allogeneic BMT.


Assuntos
Transplante de Medula Óssea/efeitos adversos , Enfisema Mediastínico/etiologia , Leucemia-Linfoma Linfoblástico de Células Precursoras/terapia , Enfisema Subcutâneo/etiologia , Humanos , Masculino , Pessoa de Meia-Idade , Transplante Homólogo
10.
Rinsho Ketsueki ; 41(12): 1247-53, 2000 Dec.
Artigo em Japonês | MEDLINE | ID: mdl-11201149

RESUMO

A 40-year-old man was diagnosed as having chronic myeloid leukemia (CML) in December 1990 and received busulfan and hydroxyurea. He developed myeloid blast crisis in February 1996. After DCMP combination chemotherapy, his disease reverted to chronic phase, but right hypochondrial pain developed and low-grade fever persisted. Abdominal CT scan revealed multiple low-density areas in the liver, suggestive of abscess formation. Grocott staining of a liver biopsy sample revealed granuloma and fungus. The patient was treated with intravenous amphotericin B (AMPH-B) without success. AMPH-B was then administered via a catheter placed in the portal vein on January 6, 1997, and an additional catheter placed in the hepatic artery on March 28. AMPH-B was administered through both catheters for more than two months, but later substituted by fluconazole because of renal impairment. On September 10, allogeneic bone marrow transplantation from the patient's HLA-identical brother was performed, despite persistence of the abnormal CT findings. Acute grade III GVHD developed, but there was no evidence of reactivation of the liver abscesses. This case demonstrates that a prior fungal liver abscess is not an absolute contraindication for BMT if prophylactic antifungal drugs are administered and careful observation is conducted.


Assuntos
Crise Blástica , Transplante Ósseo , Leucemia Mielogênica Crônica BCR-ABL Positiva/patologia , Leucemia Mielogênica Crônica BCR-ABL Positiva/terapia , Abscesso Hepático/tratamento farmacológico , Micoses/tratamento farmacológico , Adulto , Anfotericina B/administração & dosagem , Antifúngicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Fluconazol/uso terapêutico , Humanos , Masculino , Transplante Homólogo
11.
Leuk Lymphoma ; 35(5-6): 627-30, 1999 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-10609803

RESUMO

We describe a 55-year-old Japanese man with acute minimally differentiated myeloid leukemia (M0) with an inversion in the long arm of chromosome 3, i.e., inv(3)(q21q26). Patients with this chromosomal abnormality usually show normal or elevated platelet counts. However, our case had a low platelet count with megakaryocytic dysplasia at diagnosis. Furthermore, the 3q21q26 aberration is generally detected in patients with acute myelogenous leukemia (AML) or myelodysplastic syndrome. To the best of our knowledge, it has also been reported in two cases of AML-M0 with 3q21q26 and this is the third case of AML-M0 with 3q21q26. Thus it is suggested that there is some relationship between this type of karyotype abnormality and leukemogenesis and/or thrombopoiesis.


Assuntos
Inversão Cromossômica , Cromossomos Humanos Par 3/ultraestrutura , Leucemia Mieloide/patologia , Doença Aguda , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Diferenciação Celular , Cromossomos Humanos Par 3/genética , Citarabina/administração & dosagem , Daunorrubicina/administração & dosagem , Evolução Fatal , Humanos , Leucemia Mieloide/tratamento farmacológico , Leucemia Mieloide/genética , Masculino , Pessoa de Meia-Idade , Prednisolona/administração & dosagem
12.
Bone Marrow Transplant ; 24(4): 359-63, 1999 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-10467323

RESUMO

To clarify the role of hepatitis G virus (HGV) infection in liver dysfunction following allogeneic BMT, we examined cryopreserved serum samples from 33 patients who had a history of blood transfusions before BMT and whose serum samples had been stored periodically, before BMT, on day 100, and thereafter for the presence of HGV-RNA and hepatitis C virus (HCV)-RNA by reverse transcription polymerase chain reaction. Nineteen patients (58%) out of 33 were positive for HGV-RNA before BMT and 10 for HCV-RNA. All patients positive for HCV-RNA were also positive for HGV-RNA. Patients were divided into three groups according to their viral status before BMT; namely, the G+C+ group (n = 10), the G+C- group (n = 9) and the G-C- group (n = 14). Two patients in the G-C- group became positive for HGV-RNA after BMT. One patient in the G+C- group suffered an acute exacerbation of hepatitis, with GPT levels reaching over 1000 IU/l, 2 and 3 years after BMT, showing quite a different clinical course from those in the G+C- group. Excluding these three patients, GPT levels of the patients in the G+C+ group were significantly higher after day 100 and remained higher than those of patients in the G+C- and G-C- groups for at least 4 years. There were no significant differences in post-transplant GPT levels between the G+C- group and the G-C- group at any time point. Of the seven patients followed-up for 5 to 10 years, three patients became HGV-RNA-negative, while four remained positive. In the absence of HCV co-infection, the behavior of GPT values post transplant in patients with HGV infection did not differ from those without HGV infection. With respect to the patient who was G+C- and showed high values of GPT 2 and 3 years post transplant, we suspect that his liver dysfunction might have been caused by some unknown virus or etiology.


Assuntos
Transplante de Medula Óssea/fisiologia , Flaviviridae , Hepatite Viral Humana/fisiopatologia , Hepatite Viral Humana/transmissão , Testes de Função Hepática , Adolescente , Adulto , Coleta de Amostras Sanguíneas , Transfusão de Sangue , Transplante de Medula Óssea/efeitos adversos , Criopreservação , Feminino , Flaviviridae/isolamento & purificação , Seguimentos , Hepacivirus/isolamento & purificação , Humanos , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase , Complicações Pós-Operatórias , RNA Viral/sangue , Estudos Retrospectivos , Fatores de Tempo
13.
Leuk Lymphoma ; 33(1-2): 199-202, 1999 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10194139

RESUMO

A 60 year-old woman with primary esophageal T-cell lymphoma in clinical stage I(E)B is presented. Immunohistologic examination showed tumor cells to be positive for anti-LCA, anti-UCHL-1, anti-MT-1, anti-CD3 antibodies, and negative for anti-L26 antibody. Disappearance of dysphagia and improvement in esophageal findings were noted after 65 Gy of irradiation, and biopsy specimens from the esophagus revealed no malignancy. Primary esophageal lymphoma is extremely rare, and this T-cell lymphoma is only the fourth case reported in the literature.


Assuntos
Neoplasias Esofágicas/diagnóstico , Linfoma de Células T/diagnóstico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Sulfato de Bário , Terapia Combinada , Ciclofosfamida/uso terapêutico , Dilatação Patológica/complicações , Dilatação Patológica/diagnóstico por imagem , Doxorrubicina/uso terapêutico , Neoplasias Esofágicas/complicações , Neoplasias Esofágicas/tratamento farmacológico , Neoplasias Esofágicas/radioterapia , Feminino , Humanos , Linfoma de Células T/complicações , Linfoma de Células T/tratamento farmacológico , Linfoma de Células T/radioterapia , Pessoa de Meia-Idade , Prednisona/uso terapêutico , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Vincristina/uso terapêutico
14.
Rinsho Ketsueki ; 40(12): 1245-51, 1999 Dec.
Artigo em Japonês | MEDLINE | ID: mdl-10658477

RESUMO

This study was undertaken to identify the factors influencing pulmonary function in patients who underwent hematopoietic stem cell transplantation (HCT). Pulmonary function tests were evaluated before and after HCT in 51 adult patients who underwent HCT between 1993 and 1998. The patients with hematologic malignancies were given total body irradiation. Graft-versus-host disease (GVHD) prophylaxis consisted of cyclosporine A and short-term methotrexate. Six patients suffered from acute GVHD above grade II and 27 patients suffered from chronic GVHD. The post-transplant % diffusing capacity (%DLco) 100 days after HCT was significantly lower than pretransplant values (82 +/- 21% versus 71 +/- 15%, p < 0.01). The %DLco at 100 days was significantly lower in patients with chronic GVHD than in patients without chronic GVHD (66 +/- 16% versus 77 +/- 9%, p < 0.05). These findings suggested chronic GVHD is related to the decreased %DLco values observed 100 days after HCT.


Assuntos
Neoplasias Hematológicas/terapia , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Capacidade de Difusão Pulmonar , Transtornos Respiratórios/etiologia , Adolescente , Adulto , Doença Crônica , Doença Enxerto-Hospedeiro/complicações , Humanos , Pessoa de Meia-Idade , Transtornos Respiratórios/fisiopatologia , Fatores de Tempo , Transplante Homólogo
15.
Int J Hematol ; 67(4): 423-7, 1998 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-9695417

RESUMO

A 43-year-old female with AML-M1 developed late graft failure 4 months after her first allogeneic bone marrow transplant. The patient then underwent a second transplant with peripheral blood progenitor cells obtained from the same HLA-identical brother. The donor peripheral blood progenitor cells were mobilized with granulocyte colony-stimulating factor (10 micrograms/kg daily s.c. for 6 days). The patient received horse anti-thymocyte globulin alone (15 mg/kg per day for 5 days) as the conditioning regimen. Rapid hematopoietic recovery followed a sustained engraftment. The time to reach 0.5 x 10(9)/l neutrophils and 25 x 10(9)/l platelets was 10 and 12 days, respectively. Cytogenetic analysis of bone marrow performed on day +20 demonstrated a 46XY karyotype of donor origin. There was no acute graft-versus-host disease. The patient remains in complete remission with a karnofsky score of 90% 5 months after peripheral blood progenitor cell transplantation. To treat graft failure after allogeneic bone marrow transplantation, allogeneic peripheral blood progenitor cell transplantation conditioned with anti-thymocyte globulin alone should be considered as a feasible alternative to marrow transplant.


Assuntos
Soro Antilinfocitário , Transplante de Medula Óssea , Rejeição de Enxerto/terapia , Transplante de Células-Tronco Hematopoéticas , Condicionamento Pré-Transplante , Transplante Homólogo , Adulto , Feminino , Humanos , Leucemia Mieloide Aguda/terapia , Masculino , Indução de Remissão
16.
Br J Pharmacol ; 121(8): 1651-8, 1997 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-9283699

RESUMO

1. Incubation of rat peritoneal neutrophils in medium containing various concentrations of staurosporine (6.4-64 nM) increased the neutrophil chemotactic activity in the conditioned medium in a time- and concentration-dependent manner. 2. Separation of the neutrophil chemotactic activity in the conditioned medium by isoelectric focusing revealed that staurosporine (64 nM) stimulated the production of basic (pH > 8) neutrophil chemotactic factors, while TPA (12-O-tetradecanoylphorbol 13-acetate, 49 nM) stimulated the production of both basic (pH > 8) and acidic (pH 5) neutrophil chemotactic factors. 3. Determination by immunoassay of cytokine-induced neutrophil chemoattractant (CINC)-1, -2 alpha, -2 beta and -3 in the conditioned medium at 4 h revealed that staurosporine (64 nM) and TPA (49 nM) strongly stimulated the production of CINC-3 (staurosporine, 133.0 +/- 3.8; TPA, 26.7 +/- 1.0; control, 0.32 +/- 0.01 ng ml-1, means +/- s.e.mean from four samples) compared to CINC-1 (staurosporine, 55.0 +/- 1.2; TPA, 12.2 +/- 0.3; control, 0.56 +/- 0.01 ng ml-1), and CINC-2 alpha (staurosporine, 1.09 +/- 0.03; TPA, 0.90 +/- 0.02; control, < 0.10 ng ml-1). CINC-2 beta was below the detectable amount (< 0.078 ng ml-1). 4. The level of CINC-3 mRNA in the peritoneal neutrophils was determined by reverse transcription-polymerase chain reaction. Staurosporine (64 nM) and TPA (49 nM) enhanced the level of CINC-3 mRNA time-dependently, but had no effect on GAPDH mRNA levels. 5. Production of staurosporine-induced neutrophil chemotactic factor was inhibited by the protein kinase C inhibitors, H-7 (IC50, 12.3 microM), calphostin C (IC50, 0.77 microM) and Ro 31-8425 (24.3% inhibition at 10 microM), and by the tyrosine kinase inhibitor, genistein (IC50, 68.5 microM). Production of TPA-induced neutrophil chemotactic factor was also inhibited by both inhibitors. 6. Both the staurosporine- and the TPA-induced increase in CINC-3 mRNA levels were suppressed by H-7 and genistein.


Assuntos
Quimiocinas CXC , Fatores Quimiotáticos/biossíntese , Substâncias de Crescimento/biossíntese , Peptídeos e Proteínas de Sinalização Intercelular , Neutrófilos/efeitos dos fármacos , Estaurosporina/farmacologia , 1-(5-Isoquinolinasulfonil)-2-Metilpiperazina/farmacologia , Animais , Quimiocina CXCL1 , Fatores Quimiotáticos/genética , Relação Dose-Resposta a Droga , Substâncias de Crescimento/genética , Masculino , Neutrófilos/metabolismo , Proteína Quinase C/fisiologia , RNA Mensageiro/análise , Ratos , Ratos Sprague-Dawley , Acetato de Tetradecanoilforbol/farmacologia
17.
Nihon Ronen Igakkai Zasshi ; 34(1): 70-4, 1997 Jan.
Artigo em Japonês | MEDLINE | ID: mdl-9077109

RESUMO

Patient 1; A 78-year-old woman was admitted to our hospital because of general malaise. Her peripheral blood count showed bicytopenia of 900/microliter with 2% blasts, 7.0 g/dl hemoglobin, and 199,000/microliter platelets. Examination of bone marrow revealed hypocellular marrow with peroxidase-negative blasts (89%). Surface marker analysis of blast cells revealed CD13 agents. Electron-microscopically, myeloperoxidase staining was positive. The diagnosis was hypoplastic leukemia in which blasts had a feature of minimally differentiated acute myeloid leukemia (AML-MO). Patient 2; A 78-year-old man was admitted to our emergency unit because of dizziness and dyspnea on exertion. Examination of peripheral blood showed pancytopenia but no blast cells. Examination of bone marrow showed a markedly hypocellular marrow with 38% blast cells. These blast cells were negative for myeloperoxidase and they had CD13 antigen on their surfaces. The diagnosis was minimally differentiated hypoplastic leukemia. At the time of this writing these two patients had been receiving only red cell transfusions for about six months, and the disease had not progressed.


Assuntos
Medula Óssea/patologia , Leucemia Mieloide Aguda/patologia , Idoso , Feminino , Humanos , Masculino , Peroxidase , Coloração e Rotulagem
18.
J Biol Chem ; 271(26): 15724-8, 1996 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-8663002

RESUMO

Fibronectin has been shown to bind to integrin alphaIIbbeta3 in Arg-Gly-Asp (RGD)-dependent and -independent manners. A recent study has indicated that a 29-kDa dispase-digestive fragment from the C-terminal heparin-binding domain of human plasma fibronectin (lacking RGD sequence) inhibits binding of fibronectin to thrombin-stimulated platelets and ADP-induced aggregation (Tanabe, J. , Fujita, H., Iwamatsu, A., Mohri, H., and Ohkubo, T.(1993) J. Biol. Chem. 268, 27143-27147). We provide here the evidence that a peptide corresponding to residues from Ala1704 to Glu1718 (designated F1) from this fragment inhibited binding of 125I-labeled 29-kDa fragment of fibronectin to thrombin-stimulated platelets and ADP-induced aggregation. The F1 peptide bound directly to alphaIIbbeta3 integrin receptor. These results indicate that a novel binding site in the C-terminal heparin-binding region of fibronectin is localized within the residues from Ala1704 to Glu1718. Binding of 125I-labeled 29-kDa fragment of fibronectin to thrombin-stimulated platelets was not inhibited by RGDS peptide and the 12-residue peptide from the cell-binding domain of fibronectin, suggesting that binding site in the C-terminal heparin-binding domain may be different from those of RGDS and the 12-residue peptide. This additional alphaIIbbeta3-binding domain(s) in fibronectin may also play some role for prevention of thrombus formation by direct interaction with alphaIIbbeta3.


Assuntos
Fibronectinas/metabolismo , Complexo Glicoproteico GPIIb-IIIa de Plaquetas/metabolismo , Difosfato de Adenosina/farmacologia , Sequência de Aminoácidos , Sítios de Ligação , Plaquetas/metabolismo , Fibronectinas/sangue , Humanos , Dados de Sequência Molecular , Peptídeos/química , Peptídeos/metabolismo , Agregação Plaquetária/efeitos dos fármacos , Inibidores da Agregação Plaquetária/química , Inibidores da Agregação Plaquetária/metabolismo , Ligação Proteica , Trombina/farmacologia
19.
Rinsho Ketsueki ; 37(2): 101-8, 1996 Feb.
Artigo em Japonês | MEDLINE | ID: mdl-8852026

RESUMO

The efficacy of various combination chemotherapies employed for the 37 patients with low-grade non-Hodgkin's lymphoma between 1981 and 1994 was evaluated retrospectively. The overall survival at 5 years was 68%. The 5-year survival of the 27 patients achieving complete response (CR) was 87%, which was significantly higher than that of 9 patients with partial response (p = 0.0005). The CR rate of stage III and IV patients was 64% for the 22 patients treated with ACOMP-B (D), and was 38% for 8 others treated with milder chemotherapy regimens including VEPA. The 22 advanced stage patients had a 5-year survival of 88% after the treatment with ACOMP-B (D) and 69% of them remained free of disease at 5 years. In this group no relapse occurred beyond 1.6 years after treatment. These findings suggest a possible role of third generation chemotherapy in the treatment of patients with advanced-stage low-grade non-Hodgkin's lymphoma.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Linfoma não Hodgkin/tratamento farmacológico , Adulto , Idoso , Bleomicina/administração & dosagem , Ciclofosfamida/administração & dosagem , Doxorrubicina/administração & dosagem , Feminino , Humanos , Leucovorina/administração & dosagem , Linfoma não Hodgkin/mortalidade , Masculino , Metotrexato/administração & dosagem , Pessoa de Meia-Idade , Prednisolona/administração & dosagem , Prednisona/administração & dosagem , Indução de Remissão , Estudos Retrospectivos , Taxa de Sobrevida , Vincristina/administração & dosagem
20.
Rinsho Ketsueki ; 37(1): 46-52, 1996 Jan.
Artigo em Japonês | MEDLINE | ID: mdl-8683867

RESUMO

A 26-year-old male with chronic myelocytic leukemia was admitted for unrelated allogeneic bone marrow transplantation (BMT). After BMT, he developed swelling of biateral submandibular glands accompanied with pneumonitis possibly due to cytomegalovirus (CMV). Biopsy from the left submandibular gland showed giant cells with nuclear inclusion bodies that were positive for anti-CMV-IE monoclonal antibody, there fore cytomegalic sialoadenitis was diagnosed. The administration of ganciclovir resulted in resolution of the pnumonitis and submandibular gland swelling. Although cytomegalic sialoadenitis is not a life-threating complication in BMT patients, it should be noted that biopsy is very useful for the diagnosis of systemic cytomegalovirus infection.


Assuntos
Antivirais/uso terapêutico , Transplante de Medula Óssea/efeitos adversos , Infecções por Citomegalovirus/tratamento farmacológico , Ganciclovir/uso terapêutico , Leucemia Mielogênica Crônica BCR-ABL Positiva/terapia , Sialadenite/virologia , Adulto , Humanos , Doenças Pulmonares Intersticiais/tratamento farmacológico , Doenças Pulmonares Intersticiais/virologia , Masculino , Complicações Pós-Operatórias , Sialadenite/tratamento farmacológico
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