Assuntos
Eritema/patologia , Doença Relacionada a Imunoglobulina G4/patologia , Doença de Kimura/patologia , Doenças Pulmonares Intersticiais/complicações , Administração Oral , Idoso , Artrite Reumatoide/complicações , Artrite Reumatoide/diagnóstico , Eosinófilos/imunologia , Eosinófilos/patologia , Eritema/diagnóstico , Evolução Fatal , Feminino , Glucocorticoides/administração & dosagem , Glucocorticoides/uso terapêutico , Humanos , Doença Relacionada a Imunoglobulina G4/diagnóstico , Doença Relacionada a Imunoglobulina G4/imunologia , Arcada Osseodentária/patologia , Doença de Kimura/complicações , Linfadenopatia/diagnóstico por imagem , Linfadenopatia/patologia , Linfócitos/imunologia , Linfócitos/patologia , Plasmócitos/imunologia , Plasmócitos/patologia , Prednisolona/administração & dosagem , Prednisolona/uso terapêutico , Resultado do TratamentoAssuntos
Doenças do Colo/cirurgia , Doença de Crohn/complicações , Fístula Gástrica/cirurgia , Fístula Intestinal/cirurgia , Laparoscopia/instrumentação , Grampeadores Cirúrgicos , Adulto , Doenças do Colo/etiologia , Fístula Gástrica/etiologia , Humanos , Fístula Intestinal/etiologia , Laparoscopia/métodos , MasculinoRESUMO
BACKGROUND: Several studies have suggested that decreased muscle volume is associated with attenuation of immune function. The recipient's immune system is responsible for rejection of transplanted organs, which is a major cause of graft loss after transplantation. We aimed to determine whether muscle volume is correlated with graft survival after pancreas transplantation (PT). METHODS: Forty-three patients underwent PT for type 1 diabetes mellitus at our institution from August 2001 to May 2016. The quantity of skeletal muscle was evaluated using the psoas muscle mass index (PMI). The correlation between PMI and outcome after PT was assessed. RESULTS: A total of 32 and 11 recipients underwent simultaneous pancreas-kidney transplantation (SPK) and PT alone/pancreas after kidney transplantation, respectively. Patients with a surviving graft showed a significantly lower PMI than those with graft loss (P = .0451). We divided the recipients into two groups according to the PMI cutoff values, which were established using receiver operating characteristic curves. The cumulative graft survival rate was significantly higher in patients with a low PMI (P = .0206). A multivariate Cox regression analysis revealed that a low PMI (P = .0075) is an independent predictive factor for better graft survival. A low PMI was not a significant predictive factor for acute rejection, but was an independent predictive factor for graft survival after the first acute rejection (P = .0025). CONCLUSIONS: Our data suggest that muscle volume could be a predictor of graft survival after PT.
Assuntos
Diabetes Mellitus Tipo 1/complicações , Diabetes Mellitus Tipo 1/cirurgia , Sobrevivência de Enxerto/fisiologia , Transplante de Pâncreas , Sarcopenia/complicações , Adulto , Área Sob a Curva , Estudos de Coortes , Feminino , Rejeição de Enxerto , Humanos , Transplante de Rim , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Músculos Psoas/patologia , Curva ROC , Estudos Retrospectivos , Sensibilidade e EspecificidadeRESUMO
BACKGROUND: Living pancreas transplantation plays an important role in the treatment of patients with severe type 1 diabetes. However, pancreatectomy is very invasive for the donor, and less-invasive surgical procedures are needed. Although some reports have described hand-assisted laparoscopic surgery for distal pancreatectomy in living-donor operations, less-invasive laparoscopy-assisted (LA) procedures are expected to increase the donor pool. We herein report the outcomes of four cases of LA spleen-preserving distal pancreatectomy (Warshaw technique [WT]) in living pancreas donors. PATIENTS AND METHODS: Four living pancreas donors underwent LA-WT at our institution from September 2010 to January 2013. All donors fulfilled the donor criteria established by the Japan Society for Pancreas and Islet Transplantation. RESULTS: The median donor age was 54 years. Two donors underwent left nephrectomy in addition to LA-WT for simultaneous pancreas-kidney transplantation. The median donor operation time for pancreatectomy was 340.5 minutes. The median pancreas warm ischemic time was 3 minutes. The median donor blood loss was 246 g. All recipients immediately achieved insulin independence. One donor required reoperation because of obstructive ileus resulting from a port-site hernia. Another donor developed a pancreatic fistula (International Study Group of Pancreatic Fistula grade B), which was controlled with conservative management. After a maximum follow-up of 73 months, no clinically relevant adverse events had occurred. These results were comparable with those of previous studies concerning living-donor pancreas transplantation. CONCLUSION: The LA-WT is a safe and acceptable operation for living-donor pancreas transplantation.
Assuntos
Laparoscopia/métodos , Doadores Vivos , Transplante de Pâncreas/métodos , Pancreatectomia/métodos , Coleta de Tecidos e Órgãos/métodos , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pâncreas/cirurgiaRESUMO
BACKGROUND: T-cell infiltration in tumors has been used as a prognostic tool in non-small-cell lung cancer (NSCLC). However, the influence of smoking habit and histological type on tumor-infiltrating lymphocytes (TILs) in NSCLC remains unclear. PATIENTS AND METHODS: We evaluated the prognostic significance of TILs (CD4+, CD8+, CD20+, and FOXP3+) according to histological type and smoking habit using automatic immunohistochemical staining and cell counting in 218 patients with NSCLC. RESULTS: In multivariate survival analyses of clinical, pathological, and immunological factors, a high ratio of FOXP3+ to CD4+ T cells (FOXP3/CD4) [hazard ratio (HR): 4.46, P < 0.01 for overall survival (OS); HR: 1.96, P < 0.05 for recurrence-free survival (RFS)] and a low accumulation of CD20+ B cells (HR: 2.45, P = 0.09 for OS; HR: 2.86, P < 0.01 for RFS) were identified as worse prognostic factors in patients with adenocarcinoma (AD). In non-AD, a low number of CD8+ T cells were correlated with an unfavorable outcome (HR: 7.69, P < 0.01 for OS; HR: 3.57, P < 0.02 for RFS). Regarding smoking habit in AD, a high FOXP3/CD4 ratio was poorly prognostic with a smoking history (HR: 5.21, P < 0.01 for OS; HR: 2.38, P < 0.03 for RFS), whereas a low accumulation of CD20+ B cells (HR: 4.54, P = 0.03 for OS; HR: 2.94, P < 0.01 for RFS) was confirmed as an unfavorable factor in non-smokers with AD. CONCLUSIONS: A low number of CD8+ T cells in non-AD, a high FOXP3/CD4 ratio in smokers with AD, and a low number of CD20+ B cells in non-smokers with AD were identified as independent unfavorable prognostic factors in resected NSCLC. Evaluating the influence of histological type and smoking habit on the immunological environment may lead to the establishment of immunological diagnosis and appropriate individualized immunotherapy for NSCLC.
Assuntos
Carcinoma Pulmonar de Células não Pequenas/patologia , Linfócitos do Interstício Tumoral/patologia , Prognóstico , Adulto , Idoso , Idoso de 80 Anos ou mais , Antígenos CD20/imunologia , Linfócitos T CD4-Positivos/imunologia , Linfócitos T CD8-Positivos/imunologia , Carcinoma Pulmonar de Células não Pequenas/classificação , Carcinoma Pulmonar de Células não Pequenas/imunologia , Intervalo Livre de Doença , Feminino , Fatores de Transcrição Forkhead/imunologia , Humanos , Estimativa de Kaplan-Meier , Linfócitos do Interstício Tumoral/imunologia , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Fumar/efeitos adversosRESUMO
The influence of hatching date on the sex ratio of wild Gnathopogon caerulescens was examined. Cohorts reared from eggs collected in the early and middle parts of the spawning season showed almost balanced sex ratios, with female bias in some cohorts. Cohorts born later in the season mostly displayed male bias, and the mean proportion of males later in the season was significantly higher than in early- and mid-season cohorts. These results indicate that the sex ratio of G. caerulescens changes with the time of breeding, increasing along with the ambient water temperature of the lake.
Assuntos
Cyprinidae/fisiologia , Processos de Determinação Sexual , Comportamento Sexual Animal , Animais , Cruzamento , Cyprinidae/embriologia , Feminino , Masculino , Estações do Ano , Água do Mar/química , Razão de Masculinidade , TemperaturaRESUMO
A 72-year-old man presented with a 1-month history of a rash. The eruption had previously been successfully treated with oral corticosteroids (prednisolone 30 mg/day) and antihistamines on two previous occasions, but recurred several days after stopping treatment. On examination, multiple, indurated, round to annular erythematous plaques were found on the trunk and limbs. Histological examination revealed interstitial oedema, a dense infiltrate of eosinophils in the dermis, and flame figure formation. These results led us to the diagnosis of eosinophilic cellulitis. Treatment with oral corticosteroids (prednisolone 15 mg/day) was unsuccessful. Four weeks after the start of oral tacrolimus 1 mg/day, the eruption completely resolved.
Assuntos
Celulite (Flegmão)/tratamento farmacológico , Eosinofilia/tratamento farmacológico , Imunossupressores/uso terapêutico , Tacrolimo/uso terapêutico , Administração Oral , Idoso , Celulite (Flegmão)/patologia , Eosinofilia/patologia , Humanos , Masculino , Recidiva , Resultado do TratamentoRESUMO
BACKGROUND/OBJECTIVE: Left ventricular (LV) untwisting velocity has emerged as a novel index of LV diastolic function since it is thought to be related to LV diastolic suction. However, the pathophysiology of LV untwisting behavior has not been fully investigated. The aim of this study was to investigate the determinants of LV peak untwisting velocity in patients with dilated cardiomyopathy (DCM). METHODS: 101 patients with DCM (mean age 60 (SD 13) years) and 50 control subjects were evaluated. After a standard echocardiographic examination, peak torsion and peak untwisting velocity were measured using two-dimensional speckle-tracking imaging. Radial dyssynchrony was assessed by speckle-tracking radial strain analysis. Tissue Doppler derived systolic (Ts-SD) and diastolic (Te-SD) dyssynchrony indices were also assessed. RESULTS: The patients with DCM had significantly smaller peak torsion (p<0.001) and peak untwisting velocity (p<0.001) and greater radial dyssynchrony (p<0.001) and Ts-SD (p<0.001) and Te-SD (p = 0.001) compared with the control subjects. The peak untwisting velocity was correlated with end-systolic volume index (r = 0.524, p<0.001), E/e' (r = 0.365, p<0.001), radial dyssynchrony (r = 0.578, p<0.001), Ts-SD (p<0.001), Te-SD (p<0.001) and peak torsion (r = -0.635, p<0.001) in patients with DCM(. )Multivariate analysis revealed that peak torsion, radial dyssynchrony and E/e' were independent predictors of peak untwisting velocity in patients with DCM (standard coefficient -0.483, p<0.001, 0.330, p<0.001 and 0.241, p = 0.001, respectively). CONCLUSION: These results suggest that strain-based LV radial dyssynchrony and E/e' as well as LV torsion are related to diastolic untwisting behaviour in patients with DCM.
Assuntos
Cardiomiopatia Dilatada/fisiopatologia , Ecocardiografia Doppler , Anormalidade Torcional/fisiopatologia , Disfunção Ventricular Esquerda/fisiopatologia , Idoso , Biomarcadores/sangue , Cardiomiopatia Dilatada/sangue , Estudos de Casos e Controles , Diástole , Feminino , Ventrículos do Coração/fisiopatologia , Humanos , Masculino , Pessoa de Meia-Idade , Peptídeo Natriurético Encefálico/sangue , Volume Sistólico , Anormalidade Torcional/sangue , Disfunção Ventricular Esquerda/sangueRESUMO
A 20-year-old female developed a relapse of B-precursor acute lymphoblastic leukemia (ALL) as a mass in her left breast after 6 years of maintained continuous complete remission. No leukemic lesions were identified in other sites such as the bone marrow or cerebrospinal fluid. The relapsed leukemic cells in the breast revealed the same immunophenotypes (CD10(+), CD19(+), CD20(+), HLA-DR(+), CD34(+)) as those of the onset ALL cells in the bone marrow. A literature survey found 10 other cases of ALL relapse in the breast without bone marrow involvement, mostly consisting of adolescent girls. Including the present report, a total of 11 cases were analyzed; the onset ages of ALL were a median of 16.5 (range 5-50) years old and the ages of relapse in the breast a median of 20 (range 12-51) years old. Data suggest that, although rare, the breast could become one of the extramedullary relapse sites of ALL developed in adolescent girls.
Assuntos
Neoplasias da Mama/secundário , Recidiva Local de Neoplasia , Leucemia-Linfoma Linfoblástico de Células Precursoras B/patologia , Adulto , Feminino , HumanosRESUMO
The transverse thermoelectric (Nernst) effect on pyrochlore molybdates is investigated experimentally. In Nd(2)Mo(2)O(7) and Sm(2)Mo(2)O(7) with the spin chirality, the Nernst signal, which mostly arises from the transverse heat current (or equivalently the transverse Peltier coefficient alpha(xy)), shows a low-temperature (20-30 K) positive extremum, whereas it is absent in (Gd(0.95)Ca(0.05))(2)Mo(2)O(7) with no single-spin anisotropy of the rare-earth ion and hence with no spin chirality. The correlation between the Hall conductivity sigma(xy) and alpha(xy) in Nd(2)Mo(2)O(7) also indicates the spin chirality plays a significant role in the spontaneous (anomalous) Nernst effect.
RESUMO
BACKGROUND: Population studies have shown that increased large artery stiffness is an independent predictor of cardiovascular events. Experimental studies have shown that a stiff aorta is associated with decreased coronary blood flow. However, a link between large artery stiffness and coronary microvascular function in the clinical setting has not been demonstrated previously. OBJECTIVE: To evaluate the relationship between large artery stiffness and coronary flow velocity reserve (CFVR). PATIENTS AND METHODS: 102 consecutive subjects (mean (SD) age 62 (10) years) without coronary and peripheral arterial disease were enrolled in the study. After 15 minutes' rest, measurements were obtained of brachial-ankle pulse wave velocity (baPWV), augmentation index (AIx) from a carotid pulse tracing, and transthoracic echocardiographic measures, including coronary flow velocity in the left anterior descending coronary artery. In addition, coronary flow velocity during hyperaemia was measured during an intravenous infusion of adenosine triphosphate. CFVR was defined as the ratio of hyperaemic to basal coronary velocity. RESULTS: Subjects with decreased CFVR (< 2.5; n = 40) had significantly higher baPWV (1848 (369) cm/s vs 1548 (333) cm/s; p<0.001), greater AIx (25.3 (11.0)% vs 16.3 (20.0)%; p = 0.01) and greater pulse pressure (PP) (64 (13) mm Hg vs 54 (13) mm Hg; p<0.001) than those with normal CFVR (> or = 2.5; n = 62). Multivariate analysis showed that AIx and PP were independent predictors of CFVR (r = -0.32, p<0.001 and -0.25, p = 0.02, respectively). CONCLUSIONS: The data suggest that large artery stiffening is linked to a reduction of CFVR, which may partially explain the higher cardiac event rate in patients with increased large artery stiffness.
Assuntos
Doença da Artéria Coronariana/fisiopatologia , Circulação Coronária/fisiologia , Velocidade do Fluxo Sanguíneo/fisiologia , Doença da Artéria Coronariana/diagnóstico por imagem , Doença da Artéria Coronariana/etiologia , Ecocardiografia Doppler em Cores/métodos , Elasticidade , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Comportamento de Redução do RiscoRESUMO
The metal-insulator transition has been investigated for pyrochlore molybdates R(2)Mo(2)O(7) with nonmagnetic rare-earth ions R. The dynamical scaling analysis of ac susceptibility reveals that the geometrical frustration causes the atomic spin-glass state. The reentrant spin-glass phase exists below the ferromagnetic transition. The electronic specific heat is enhanced as compared to the band calculation result, perhaps due to the orbital fluctuation in the half-metallic ferromagnetic state. The large specific heat is rather reduced upon the transition, likely because the short-range antiferromagnetic fluctuation shrinks the Fermi surface.
Assuntos
Vidro , Imãs , Metais , Modelos Químicos , Temperatura de TransiçãoAssuntos
Colostomia/efeitos adversos , Pioderma Gangrenoso/complicações , Escleroderma Sistêmico/complicações , Estomas Cirúrgicos , Idoso , Anti-Inflamatórios/uso terapêutico , Feminino , Humanos , Prednisona/uso terapêutico , Pioderma Gangrenoso/tratamento farmacológico , Escleroderma Sistêmico/imunologia , Estomas Cirúrgicos/patologia , Resultado do Tratamento , CicatrizaçãoRESUMO
ATP-sensitive K channels are widely expressed in cytoplasmic membranes of neurons, and they couple cell metabolism to excitability. They are thought to be involved in neuroprotection against cell damage during hypoxia, ischemia and excitotoxicity by hyperpolarizing neurons and reducing excitability. Although barbiturates are often used in patients with brain ischemia, the effects of these agents on neuronal ATP-sensitive K channels have not been clarified. We studied the effects of thiopental and pentobarbital on surface ATP-sensitive K channels in principal neurons of rat substantia nigra pars compacta. Whole cell voltage- and current-clamp recordings were made using rat midbrain slices. ATP-sensitive K channels were activated by intracellular dialysis with an ATP-free pipette solution during perfusion with a glucose-free solution. When the pipette solution contained 4mM ATP and the perfusing solution contained 25 mM glucose, the membrane current at -60 mV remained stable. When intracellular ATP was depleted, hyperpolarization and an outward current developed slowly. Although thiopental did not affect the membrane current in the presence of ATP and glucose, it reversibly inhibited the hyperpolarization and outward current induced by intracellular ATP depletion at 100 and 300 microM. Thiopental reduced the ATP depletion-induced outward current by 4.7%, 36.7% and 87% at 30, 100 and 300 microM, respectively. The high dose of pentobarbital also exhibited similar effects on ATP-sensitive K channels. These results suggest that barbiturates at high concentrations but not at clinically relevant concentrations inhibit ATP-sensitive K channels activated by intracellular ATP depletion in rat substantia nigra.
Assuntos
Barbitúricos/farmacologia , Neurônios/efeitos dos fármacos , Canais de Potássio Corretores do Fluxo de Internalização/efeitos dos fármacos , Potássio/metabolismo , Substância Negra/efeitos dos fármacos , Trifosfato de Adenosina/metabolismo , Trifosfato de Adenosina/farmacologia , Animais , Animais Recém-Nascidos , Dano Encefálico Crônico/tratamento farmacológico , Dano Encefálico Crônico/fisiopatologia , Dano Encefálico Crônico/prevenção & controle , Membrana Celular/efeitos dos fármacos , Membrana Celular/metabolismo , Relação Dose-Resposta a Droga , Hipnóticos e Sedativos/farmacologia , Líquido Intracelular/efeitos dos fármacos , Líquido Intracelular/metabolismo , Potenciais da Membrana/efeitos dos fármacos , Potenciais da Membrana/fisiologia , Inibição Neural/efeitos dos fármacos , Inibição Neural/fisiologia , Neurônios/metabolismo , Fármacos Neuroprotetores/farmacologia , Técnicas de Cultura de Órgãos , Técnicas de Patch-Clamp , Pentobarbital/farmacologia , Canais de Potássio Corretores do Fluxo de Internalização/metabolismo , Ratos , Ratos Sprague-Dawley , Substância Negra/metabolismo , Tiopental/farmacologiaRESUMO
Tumor suppressor p53 is known to play a crucial role in chemosensitivity in colorectal cancer. We previously demonstrated that an apoptosis-associated speck-like protein, ASC, is a p53-target gene which regulates p53-Bax mitochondrial apoptotic pathway. ASC is also known to be a target of methylation-induced gene silencing. An inactivation of ASC might thus cause resistance to chemotherapy, and if this is the case, then the expression of ASC would restore the chemosensitivity. The aim of this study was to clarify this hypothesis. ASC was methylated in 25% of all resected specimens in patients with colorectal cancer; however, ASC methylation did not always correspond to a lack of ASC protein. When expressed in colon cancer cells, in which ASC is absent due to methylation, ASC was found to enhance the chemosensitivity in a p53-dependent manner. In p53-null cells, ASC increased the p53-mediated cell death induced by p53-expressing adenovirus infection. Our data suggest that the methylation-induced silencing of ASC might cause resistance to p53-mediated chemosensitivity in colorectal cancer. The gene introduction of ASC may thus restore such chemosensitivity, and this modality may therefore be a useful new treatment strategy for colorectal cancer.
Assuntos
Neoplasias Colorretais/genética , Proteínas do Citoesqueleto/genética , Metilação de DNA , Resistencia a Medicamentos Antineoplásicos/genética , Inativação Gênica , Proteína Supressora de Tumor p53/metabolismo , Antineoplásicos/farmacologia , Apoptose/efeitos dos fármacos , Apoptose/fisiologia , Proteínas Adaptadoras de Sinalização CARD , Neoplasias Colorretais/tratamento farmacológico , Neoplasias Colorretais/metabolismo , Ilhas de CpG/genética , Proteínas do Citoesqueleto/metabolismo , Fluoruracila/farmacologia , Humanos , Reação em Cadeia da PolimeraseRESUMO
We report a rare case of symptomatic hemifacial spasm caused by a fusiform vertebral artery aneurysm. A 59-year-old woman presented with left hemifacial spasm of 18 months duration. Magnetic resonance imaging showed an enlarged a fusiform aneurysm of the left vertebral artery which compressed the seventh cranial nerve at its exit from the caudal pons. Microvascular decompression of the facial nerve with moving of the aneurysm resulted in complete relief of the hemifacial spasm. No enlargement of the aneurysm was shown on follow-up for a period of 6 years.