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1.
Respir Med ; 171: 105945, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32755764

RESUMO

BACKGROUND: Fibroblast dysfunction is the main pathogenic mechanism of idiopathic pulmonary fibrosis (IPF). S100 calcium-binding protein A4 (S100A4) plays critical roles in the proliferation of fibroblasts and in the development of pulmonary, hepatic, and renal fibrosis. However, the clinical implications of S100A4 in IPF have not been evaluated. METHODS AND MATERIALS: The S100A4 mRNA and protein levels were measured by real-time PCR and immunoblotting in fibroblasts from IPF patients and controls. The S100A4 level was measured by enzyme-linked immunosorbent assay in bronchoalveolar lavage fluid (BALF) from the normal controls (NCs; n = 33) and from patients with IPF (n = 87), non-specific interstitial pneumonia (NSIP; n = 22), hypersensitivity pneumonitis (HP; n = 19), and sarcoidosis (n = 9). S100A4 localization was evaluated by immunofluorescence staining. RESULTS: The S100A4 mRNA and protein levels were significantly higher in fibroblasts from IPF patients (n = 14) than in those from controls (n = 10, p < 0.001). The S100A4 protein level in BALF was significantly higher in the IPF (89.25 [49.92-203.02 pg/mL]), NSIP (74.53 [41.88-131.45 pg/mL]), HP (222.36 [104.92-436.92 pg/mL]) and sarcoidosis (101.62 [59.36-300.62 pg/mL]) patients than in the NCs (7.57 [1.31-14.04 pg/mL], p < 0.01, respectively). Cutoff S100A4 levels of 18.85 and 28.88 pg/mL had 87.4% and 87.8% accuracy, respectively, for discriminating IPF and other lung diseases from NCs. CONCLUSIONS: S100A4 is expressed by α-SMA-positive cells in the interstitium of the IPF patients. S100A4 may participate in the development of IPF, and its protein level may be a candidate diagnostic and therapeutic marker for IPF.


Assuntos
Fibrose Pulmonar Idiopática/diagnóstico , Fibrose Pulmonar Idiopática/genética , Pulmão/metabolismo , Proteína A4 de Ligação a Cálcio da Família S100/genética , Proteína A4 de Ligação a Cálcio da Família S100/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Biomarcadores/metabolismo , Feminino , Expressão Gênica , Humanos , Fibrose Pulmonar Idiopática/metabolismo , Masculino , Pessoa de Meia-Idade , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Reação em Cadeia da Polimerase em Tempo Real , Proteína A4 de Ligação a Cálcio da Família S100/fisiologia
2.
Int J Clin Exp Pathol ; 13(6): 1421-1425, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32661479

RESUMO

Composite hemangioendothelioma (CHE) is an extremely rare locally aggressive vascular neoplasm comprising various benign, intermediate, and malignant vascular components. It is usually located superficially, in the dermis and subcutis of the extremities. Herein, we report a first case of CHE arising from the skeletal muscle in a 67-year-old woman who presented with a palpable mass on her right forearm. Magnetic resonance imaging revealed a 3.0 × 2.7-cm intramuscular mass with high-signal intensity on contrast-enhanced T2-weighted images. Excision was performed, and microscopic examination revealed a heterogeneous mixture of vascular components, consisting of arteriovenous malformation, spindle cell hemangioma, retiform hemangioendothelioma, and angiosarcoma-like areas. Moreover, we present a brief review of previously reported cases of CHE arising from the extremities.

3.
Cancer Biomark ; 22(1): 55-62, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29630519

RESUMO

BACKGROUND: Serum carcinoembryonic antigen (CEA) and cytokeratin 19 fragment (CYFRA 21-1) levels are prognostic predictors in non-small cell lung cancer (NSCLC). However, even in patients with the same stage of cancer, the serum levels of those markers often vary. OBJECTIVE: We investigated the association between the initial biomarker levels and prognosis. METHODS: We retrospectively reviewed 445 patients with advanced NSCLC and their baseline serum CEA and CYFRA 21-1 levels. Patients were divided into four groups according to the initial levels of those markers: the NN, HN, NH, and HH group. Kaplan-Meier survival analysis with Log-rank test and Cox proportional hazards regression analysis were performed. RESULTS: The 5-year overall survival (OS) rate in the HN group was the highest (32.2%). Multivariate analyses indicated that the HN group (HR 0.520, 95% CI 0.309-0.878, P= 0.014), female sex (HR 0.685, 95% CI 0.498-0.944, P= 0.021), serum CRP level (HR 1.057, 95% CI 1.034-1.080, P< 0.001), chemotherapy (HR 0.324, 95% CI 0.228-0.460, P< 0.001), and chemotherapy/radiotherapy (HR 0.266, 95% CI 0.171-0.414, P< 0.001) were independent prognostic factors for overall survival. CONCLUSIONS: In advanced NSCLC, patients with baseline high serum CEA but low CYFRA 21-1 level have a significant longer overall survival regardless of clinical stage.


Assuntos
Biomarcadores Tumorais/sangue , Antígeno Carcinoembrionário/sangue , Carcinoma Pulmonar de Células não Pequenas/sangue , Queratina-19/sangue , Neoplasias Pulmonares/sangue , Idoso , Carcinoma Pulmonar de Células não Pequenas/patologia , Feminino , Humanos , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Prognóstico
4.
Pathology ; 49(6): 582-588, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28843919

RESUMO

EGFR and HER2 are among the most promising therapeutic targets in solid cancers. The expression status of EGFR and HER2 are associated with the prognosis, and with a number of clinicopathological factors, in many cancers. However, few studies have examined this association in distal extrahepatic cholangiocarcinoma (EHCC). Therefore, we investigated EGFR and HER2 protein expression and gene copy number variation (CNV) in distal EHCC. We also studied the association of these factors with clinicopathological parameters and prognosis. Immunostaining, using antibodies against EGFR and HER2, was performed on 84 cases of distal EHCC. All positive (3+) and equivocal (2+) EGFR and HER2 expression cases, together with randomly selected negative (1+ and 0) cases, were evaluated for EGFR and HER2 CNV. Among distal EHCC samples, 6.0% (n=5) were positive (3+) for EGFR expression and 6.0% (n=5) were equivocal (2+). HER2 expression was positively identified in 2.4% of samples (n=2), and was equivocal in 1.2% of samples (n=1). All cases of positive EGFR expression showed amplification (n=1) or high polysomy (n=4) involving the EGFR gene; three cases (60%) of equivocal EGFR expression showed high polysomy of the EGFR gene. All cases of positive or equivocal HER2 expression (n=3, 3.6%) showed amplification of the HER2 gene. In univariate analysis, EGFR expression and CNV were associated with shorter cancer-specific overall survival (p=0.003 and p=0.018, respectively). Multivariate analysis also showed that EGFR CNV was a significant prognostic factor in distal EHCC (p=0.015). Although further study is warranted, our findings suggest that EGFR expression and CNV are factors associated with poor prognosis, and that anticancer therapeutics against EGFR and HER2 receptors may be promising therapeutic options for patients with distal EHCC.


Assuntos
Colangiocarcinoma/genética , Variações do Número de Cópias de DNA , Receptores ErbB/genética , Receptor ErbB-2/genética , Colangiocarcinoma/diagnóstico , Colangiocarcinoma/metabolismo , Receptores ErbB/metabolismo , Feminino , Humanos , Imuno-Histoquímica , Hibridização In Situ , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Receptor ErbB-2/metabolismo
5.
Iran J Radiol ; 13(4): e41066, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27895882

RESUMO

Primary pleuropulmonary synovial sarcomas are rare soft tissue malignancies; combined metastatic involvement of the heart is extremely rare. In this case report, a 17-year-old female presented with a history of chest pain. Chest radiographs revealed a round mass in the left upper hemithorax, and computed tomography (CT) showed a well-defined heterogeneous enhancing mass abutting the pleura. A core needle biopsy revealed malignant spindle cells. Surgical resection was performed, and a final diagnosis of primary pleural synovial sarcoma, monophasic fibrous type, was made. The patient underwent radical irradiation and chemotherapy and remained stable for 28 months until a follow-up chest CT showed a poorly enhancing nodule in the left pericardial region that enlarged after 5 months. Surgical resection was performed. Histological examination confirmed metastatic cardiac involvement from a primary pleural synovial sarcoma. We report this unusual case of a primary pleural synovial sarcoma metastasis to the heart.

6.
Tuberc Respir Dis (Seoul) ; 79(3): 143-52, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-27433174

RESUMO

BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is a progressive and lethal lung disease characterized by the accumulation of excessive fibroblasts and myofibroblasts in the extracellular matrix. The transforming growth factor ß1 (TGF-ß1)-induced epithelial-to-mesenchymal transition (EMT) is thought to be a possible source of fibroblasts/myofibroblasts in IPF lungs. We have previously reported that apolipoprotein A1 (ApoA1) has anti-fibrotic activity in experimental lung fibrosis. In this study, we determine whether ApoA1 modulates TGF-ß1-induced EMT in experimental lung fibrosis and clarify its mechanism of action. METHODS: The A549 alveolar epithelial cell line was treated with TGF-ß1 with or without ApoA1. Morphological changes and expression of EMT-related markers, including E-cadherin, N-cadherin, and α-smooth muscle actin were evaluated. Expressions of Smad and non-Smad mediators and TGF-ß1 receptor type 1 (TßRI) and type 2 (TßRII) were measured. The silica-induced lung fibrosis model was established using ApoA1 overexpressing transgenic mice. RESULTS: TGF-ß1-treated A549 cells were changed to the mesenchymal morphology with less E-cadherin and more N-cadherin expression. The addition of ApoA1 inhibited the TGF-ß1-induced change of the EMT phenotype. ApoA1 inhibited the TGF-ß1-induced increase in the phosphorylation of Smad2 and 3 as well as that of ERK and p38 mitogen-activated protein kinase mediators. In addition, ApoA1 reduced the TGF-ß1-induced increase in TßRI and TßRII expression. In a mouse model of silica-induced lung fibrosis, ApoA1 overexpression reduced the silica-mediated effects, which were increased N-cadherin and decreased E-cadherin expression in the alveolar epithelium. CONCLUSION: Our data demonstrate that ApoA1 inhibits TGF-ß1-induced EMT in experimental lung fibrosis.

7.
J Proteome Res ; 15(5): 1717-24, 2016 05 06.
Artigo em Inglês | MEDLINE | ID: mdl-27052453

RESUMO

Idiopathic pulmonary fibrosis (IPF) is a progressive, eventually fatal disease characterized by fibrosis of the lung parenchyma and loss of lung function. IPF is believed to be caused by repetitive alveolar epithelial cell injury and dysregulated repair process including uncontrolled proliferation of lung (myo) fibroblasts and excessive deposition of extracellular matrix proteins in the interstitial space; however, the pathogenic pathways involved in IPF have not been fully elucidated. In this study, we attempted to characterize metabolic changes of lung tissues involved in the pathogenesis of IPF using gas chromatography-mass spectrometry-based metabolic profiling. Partial least-squares discriminant analysis (PLS-DA) model generated from metabolite data was able to discriminate between the control subjects and IPF patients (R(2)X = 0.37, R(2)Y = 0.613 and Q(2) (cumulative) = 0.54, receiver operator characteristic AUC > 0.9). We discovered 25 metabolite signatures of IPF using both univariate and multivariate statistical analyses (FDR < 0.05 and VIP score of PLS-DA > 1). These metabolite signatures indicated alteration in metabolic pathways: adenosine triphosphate degradation pathway, glycolysis pathway, glutathione biosynthesis pathway, and ornithine aminotransferase pathway. The results could provide additional insight into understanding the disease and potential for developing biomarkers.


Assuntos
Fibrose Pulmonar Idiopática/metabolismo , Metabolômica/métodos , Estudos de Casos e Controles , Células Cultivadas , Análise Discriminante , Cromatografia Gasosa-Espectrometria de Massas , Humanos , Fibrose Pulmonar Idiopática/patologia , Redes e Vias Metabólicas , Miofibroblastos/metabolismo , Miofibroblastos/patologia
8.
Pathology ; 48(1): 35-40, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-27020207

RESUMO

Distal extrahepatic bile duct (EBD) carcinoma is a rare but highly aggressive malignant neoplasm. Some in vitro studies have shown that EGFR and PI3K-Akt pathway play an important role in the carcinogenesis of bile duct carcinoma. The aim of the present study is to investigate the expression of EGFR, p-AKT, and COX-2 and the mutation of PIK3CA in distal EBD carcinoma and evaluate the association with clinicopathological factors. Ninety cases of distal extrahepatic bile duct (EBD) carcinoma specimens were studied. Immunohistochemistry (IHC) using antibodies against EGFR, p-AKT, and COX-2 was performed on TMA blocks. The PIK3CA mutation was evaluated using the PNAClamp Detection Kit from DNA samples extracted from formalin fixed, paraffin embedded tissue. EGFR expression of distal EBD carcinomas was 61.9%, 26.2%, 6.0% and 6.0% in the negative, weakly positive, moderately positive, and strongly positive groups, respectively. Positive EGFR expression showed significant relationships with high T stage (p = 0.024). In Kaplan-Meier analysis, EGFR expression was associated with shorter cancer-specific overall survival (p = 0.005). Multivariate analysis also showed that moderate or strong (2+ or 3+) EGFR expression was a significant prognostic factor in distal EBD carcinoma: HR 5.286; p = 0.001. Ninety cases of EBD carcinoma tissue were analysed for hotspot mutations (exon 9 and 20) in the PIK3CA gene. Only one mutation was detected: a missense mutation of H1047 at exon 20. The expression levels of p-AKT and COX-2 showed no association with any clinicopathological parameters, including survival rate. Moderate and strong EGFR expressions demonstrate a direct link to poor prognosis. Although further study is warranted to understand the clinicopathological significance, our finding suggests EGFR is a useful prognostic marker of patients with distal EBD carcinoma. A low prevalence of PIK3CA mutation exists in the distal EBD carcinoma of Korean patients, indicating that mutation screening may not be useful in determining prognosis or in formulating a treatment response to targeted inhibition in Korea.


Assuntos
Neoplasias dos Ductos Biliares/genética , Ductos Biliares Extra-Hepáticos/patologia , Classe I de Fosfatidilinositol 3-Quinases/genética , Receptores ErbB/genética , Neoplasias dos Ductos Biliares/diagnóstico , Neoplasias dos Ductos Biliares/patologia , Classe I de Fosfatidilinositol 3-Quinases/metabolismo , Ciclo-Oxigenase 2/genética , Ciclo-Oxigenase 2/metabolismo , Receptores ErbB/metabolismo , Feminino , Seguimentos , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade , Mutação , Prognóstico , Proteínas Proto-Oncogênicas c-akt/genética , Proteínas Proto-Oncogênicas c-akt/metabolismo , Análise de Sobrevida
9.
Lung Cancer ; 90(2): 346-51, 2015 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-26342550

RESUMO

OBJECTIVES: Interleukin (IL)-33 protects against infection and inflammation; however, few studies have explored the relevance of IL-33 in lung cancer patients. We evaluated relation of plasma IL-33 levels with development and progression of lung cancer. MATERIALS AND METHODS: A total of 160 patients with lung cancer and 160 controls with normal lungs were enrolled. Plasma IL-33 levels were measured using a specific sandwich ELISA; these levels were followed-up in 18 patients who underwent surgery and in 14 patients treated with chemotherapy. Malignant lesions and normal lung tissues from 10 cancer patients were subjected to immunohistochemical staining for IL-33. RESULTS: IL-33 levels were significantly lower in cancer patients than normal controls (0.08 vs. 0.38 ng/mL, p=0.005). Among cancer patients, IL-33 decreased in a stage-dependent manner from 0.76 ng/mL in stage I patients to 0.25 ng/mL in those with stage II, 0.08 ng/mL in those with stage III, and 0.08 ng/mL in those with stage IV (p=0.002). The levels were higher at stage I (p=0.041) and markedly lower at stages III and IV than those of controls (p=0.005 and p=0.001, respectively). A similar pattern was observed when IL-33 levels were analyzed by T stage; the levels were 0.39 ng/mL at T1/T2 vs. 0.08 ng/mL at T3/T4 (p=0.001). However, no difference was noted when stage N1 levels were compared with N2 and N3 levels (p=0.058), or between stage M0 and M1 levels (p=0.147). IL-33 levels gradually decreased after surgical resection of malignant lesions (from 1.075 to 0.756 ng/mL, p=0.006), but were unchanged after chemotherapy (0.705 vs. 0.829 ng/mL, p=0.875). On immunohistochemical staining, bronchial epithelial and vascular endothelial cells of normal lung tissues mainly expressed IL-33. CONCLUSIONS: Plasma IL-33 levels are associated inversely with progression of lung cancer. The observed decreases may be attributed to lung volume reduction containing bronchial epithelium and vascular endothelium as the sources of IL-33.


Assuntos
Interleucina-33/sangue , Neoplasias Pulmonares/sangue , Neoplasias Pulmonares/patologia , Idoso , Estudos de Casos e Controles , Progressão da Doença , Feminino , Humanos , Pulmão/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias/métodos , Pneumonectomia/métodos
10.
J Menopausal Med ; 20(2): 80-3, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-25371898

RESUMO

Sclerosing stromal tumor (SST) of the ovary is a rare tumor derived from the sex cord stroma. This tumor was first described by Chalvaridjian and Scully in 1973. SST of the ovary is prevalence of 1.5% to 6% of ovarian stromal tumors. Patients are most commonly diagnosed in their 20s and 30s. There have been reports of SST postmenopausal women aged 65-, 67-, and 71 in the Republic of Korea; however, no report of this disease has been reported in women older than 80. In this study, we would like to report an 80-year-old postmenopausal woman who did not previously complain of any symptoms, and was finally diagnosed with SST. She was involved in a traffic accident, and huge pelvic mass was found during the evaluation of intra-abdominal hemorrhage. Total abdominal hysterectomy with bilateral salpingo-oophorectomy was performed ; a final pathologic diagnosis reported SST.

11.
Can J Cardiol ; 30(10): 1250.e9-1250.e11, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25108497

RESUMO

Although angiographically detectable neovascularity is being reported with increasing frequency in patients with cardiac myxoma, associated coronary fistula to the cardiac chamber has not been described. We report a 62-year-old woman in whom cardiac computed tomography (CT) enabled the noninvasive diagnosis of a left atrial myxoma with neovascularization arising from the left circumflex artery and the formation of an unusual fistula into the left atrial cavity, with concomitant evaluation of the coronary arteries. Careful suture ligation of a supplying coronary branch in the atrial septum was performed during tumor excision to prevent the development of intra-atrial steal.


Assuntos
Fístula/complicações , Átrios do Coração , Cardiopatias/complicações , Neoplasias Cardíacas/irrigação sanguínea , Neoplasias Cardíacas/diagnóstico por imagem , Tomografia Computadorizada Multidetectores , Mixoma/irrigação sanguínea , Mixoma/diagnóstico por imagem , Vasos Coronários/diagnóstico por imagem , Feminino , Neoplasias Cardíacas/complicações , Humanos , Pessoa de Meia-Idade , Mixoma/complicações , Neovascularização Patológica , Ultrassonografia
12.
Tuberc Respir Dis (Seoul) ; 75(1): 36-9, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23946758

RESUMO

Capillary hemangioma of the tracheobronchial tree is an extremely rare benign tumor in adults, especially those located in the bronchus. Characteristics and treatment of capillary hemangiomas of adult tracheobronchial trees have not been well known. We present a 61-year-old man with hemoptysis, which was caused by a small tiny nodule in the left lingular segmental bronchus. The nodule was removed by a forcep biopsy, via flexible bronchoscopy, and it was revealed to be capillary hemangioma. A small isolated endobronchial capillary hemangioma can be treated with excisional forcep biopsy, but a risk of massive bleeding should not be overlooked.

13.
Asia Pac Allergy ; 3(2): 136-9, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23667838

RESUMO

It has been well known that mesalazine can cause the interstitial lung disease, such as Bronchiolitis obliterans with organizing pneumonia (BOOP), Non-Specific Interstitial Pneumonia (NSIP), or eosinophilic pneumonia. 5-Aminosalicylic acid (5-ASA), mesalazine, and sulfasalazine are important drugs for treating inflammatory bowel disease. Topical products of these limited systemic absorption and have less frequent side effects, therefore suppository form of these drugs have been used more than systemic drug. Most cases of measalzine-induced lung toxicity develop from systemic use of the drug. A 30-year-old woman had an interstitial lung disease after using mesalazine suppository because of ulcerative colitis. The lung biopsy demonstrated eosinophilic pneumonia combined with BOOP. She was recovered after stopping of mesalazine suppository and treatment with systemic steroid.

14.
PLoS One ; 8(2): e55827, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23409054

RESUMO

The inhalation of silica particles induces silicosis, an inflammatory and fibrotic lung disease characterized by the early accumulation of macrophages and neutrophils in the airspace and subsequent appearance of silicotic nodules as a result of progressive fibrosis. This study evaluated whether apolipoprotein A1 (ApoA1) protects against ongoing fibrosis and promotes the resolution of established experimental lung silicosis. Crystallized silica was intratracheally administered to 6- to 8-week-old transgenic mice expressing human ApoA1 in their alveolar epithelial cells (day 0). ApoA1 was overexpressed beginning on day 7 (ApoA1_D7 group) or day 15 (ApoA1_D15 group). The mice were sacrificed on day 30 for an evaluation of lung histology; the measurement of collagen, transforming growth factor-b1 and lipoxin A4; and a TUNEL assay for apoptotic cells. The ApoA1_D7 and D15 groups showed significant reductions in the silica-induced increase in inflammatory cells, silicotic nodule area, and collagen deposition compared with the silica-treated ApoA1 non-overexpressing mice. The level of transforming growth factor-b1 decreased in the bronchoalveolar lavage fluid, whereas lipoxin A4 was increased in the ApoA1_D7 and D15 groups compared with the silica-treated ApoA1 non-overexpressing mice. The silica-induced increase in the number of apoptotic cells was significantly reduced in the lungs of mice overexpressing ApoA1. Overexpression of ApoA1 decreased silica-induced lung inflammation and fibrotic nodule formation. The restoration of lipoxin A4 may contribute to the protective effect of ApoA1 overexpression against silica-induced lung fibrosis.


Assuntos
Apolipoproteína A-I/genética , Expressão Gênica , Fibrose Pulmonar/genética , Silicose/genética , Animais , Apoptose , Colágeno/metabolismo , Modelos Animais de Doenças , Doxiciclina/farmacologia , Regulação da Expressão Gênica/efeitos dos fármacos , Humanos , Inflamação/induzido quimicamente , Inflamação/genética , Inflamação/patologia , Mediadores da Inflamação/metabolismo , Camundongos , Camundongos Transgênicos , Fibrose Pulmonar/metabolismo , Fibrose Pulmonar/patologia , Dióxido de Silício/efeitos adversos , Silicose/metabolismo , Silicose/patologia , Nódulo Pulmonar Solitário/patologia , Fator de Crescimento Transformador beta1/metabolismo
16.
PLoS One ; 6(8): e22711, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21829647

RESUMO

BACKGROUND: Aspirin-exacerbated respiratory disease (AERD) refers to the development of bronchoconstriction in asthmatics following the ingestion of aspirin. Although alterations in eicosanoid metabolites play a role in AERD, other immune or inflammatory mechanisms may be involved. We aimed to identify proteins that were differentially expressed in nasal polyps between patients with AERD and aspirin-tolerant asthma (ATA). METHODOLOGY/PRINCIPAL FINDINGS: Two-dimensional electrophoresis was adopted for differential display proteomics. Proteins were identified by liquid chromatography-tandem mass spectrometry (LC-MS). Western blotting and immunohistochemical staining were performed to compare the amount of fatty acid-binding protein 1 (FABP1) in the nasal polyps of patients with AERD and ATA. Fifteen proteins were significantly up- (seven spots) or down-regulated in the nasal polyps of patients with AERD (n = 5) compared to those with ATA (n = 8). LC-MS revealed an increase in seven proteins expression and a decrease in eight proteins expression in patients with AERD compared to those with ATA (P = 0.003-0.045). FABP1-expression based on immunoblotting and immunohistochemical analysis was significantly higher in the nasal polyps of patients with AERD compared to that in patients with ATA. FABP1 was observed in epithelial, eosinophils, macrophages, and the smooth-muscle cells of blood vessels in the polyps. CONCLUSIONS/SIGNIFICANCE: Our results indicate that alterations in 15 proteins, including FABP1, may be related to the development of AERD.


Assuntos
Aspirina/efeitos adversos , Proteínas de Ligação a Ácido Graxo/fisiologia , Doenças Respiratórias/induzido quimicamente , Western Blotting , Cromatografia Líquida , Eletroforese em Gel de Poliacrilamida , Humanos , Imuno-Histoquímica , Doenças Respiratórias/fisiopatologia , Espectrometria de Massas em Tandem
17.
Korean J Hepatol ; 16(3): 325-8, 2010 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-20924217

RESUMO

Intrahepatic cholangiocarcinoma is a rare malignancy that originates from the epithelial cells of the intrahepatic bile ducts. Intrahepatic cholangiocarcinoma can metastasize in lymphatic chains, including the hepatoduodenal ligament, and it often invades adjacent organs or metastasizes to other visceral organs such as the lungs, bones, adrenal glands, and brain. However, distant skeletal muscle metastasis is very rare. Moreover, a metastatic skeletal muscle tumor rarely shows specific symptoms, making it difficult to identify in a routine examination. A 45-year-old man with a chief complaint of right upper quadrant abdominal pain was admitted to our hospital. Abdominal ultrasound and computed tomography with contrast enhancement showed a malignant mass in the right hepatic lobe, and 2-[18F] fluoro-2-deoxy-D-glucose positron-emission tomography revealed distant skeletal muscle metastases in the thorax and buttock. The patient underwent an ultrasound-guided percutaneous needle biopsy for the metastatic low-echo masses in the skeletal muscle.


Assuntos
Fluordesoxiglucose F18 , Neoplasias Hepáticas/diagnóstico , Neoplasias Musculares/diagnóstico por imagem , Compostos Radiofarmacêuticos , Neoplasias dos Ductos Biliares/diagnóstico , Neoplasias dos Ductos Biliares/diagnóstico por imagem , Neoplasias dos Ductos Biliares/secundário , Ductos Biliares Intra-Hepáticos , Colangiocarcinoma/diagnóstico , Colangiocarcinoma/diagnóstico por imagem , Colangiocarcinoma/secundário , Humanos , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/secundário , Masculino , Pessoa de Meia-Idade , Neoplasias Musculares/diagnóstico , Neoplasias Musculares/secundário , Tomografia por Emissão de Pósitrons , Tomografia Computadorizada por Raios X , Ultrassonografia
18.
Am J Respir Crit Care Med ; 182(5): 633-42, 2010 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-20463180

RESUMO

RATIONALE: Idiopathic pulmonary fibrosis (IPF) is caused by alterations in expression of proteins involved in multiple pathways, including matrix deposition, inflammation, injury, and repair. OBJECTIVES: To understand the pathogenic changes in lung protein expression in IPF and to evaluate apolipoprotein (Apo) A-I as a candidate therapeutic molecule. METHODS: Two-dimensional electrophoresis was adopted for differential display proteomics. Reverse-transcriptase polymerase chain reaction, Western blotting, immunohistochemical staining, and ELISA were performed for identification and quantitative measurement of Apo A-I in bronchoalveolar lavage fluids from subjects with IPF and experimental bleomycin-induced mice. MEASUREMENTS AND MAIN RESULTS: Sixteen protein spots showed differences in relative intensity between IPF (n = 14) and healthy control subjects (n = 8). Nano liquid chromatography-tandem mass spectrometry (LC-MS/MS) revealed increase of haptoglobulin and decrease of alpha(1)-antitrypsin, alpha(1)-antichymotrypsin, macrophage capping protein, angiotensinogen, hemoglobin chain B, Apo A-I, clusterin, protein disulfide isomerase A3, immunoglobulin, and complement C4A in IPF compared with normal control subjects (P = 0.006-0.044). Apo A-I concentrations were lower in bronchoalveolar lavage fluids from subjects with IPF (n = 28) than in normal control subjects (n = 18; P < 0.01). In bleomycin-treated mice, Apo A-I protein in BALF was lower than that in sham-treated control animals. Immunohistochemical analysis showed positive staining on intraalveolar macrophages and epithelial cells of the lungs. Intranasal treatment with Apo A-I protein reduced the bleomycin-induced increases in number of inflammatory cells and collagen deposition in sham-treated mice in a dose-dependent manner. CONCLUSIONS: Alterations of several inflammatory and antiinflammatory proteins in the lungs may be related to the pathogenesis of IPF, and local treatment with Apo A-I is very effective against the development of experimental lung injury and fibrosis.


Assuntos
Apolipoproteína A-I/biossíntese , Apolipoproteína A-I/uso terapêutico , Fibrose Pulmonar Idiopática/tratamento farmacológico , Fibrose Pulmonar Idiopática/metabolismo , Idoso , Animais , Apolipoproteína A-I/genética , Apolipoproteína A-I/metabolismo , Bleomicina , Western Blotting , Líquido da Lavagem Broncoalveolar/química , Modelos Animais de Doenças , Eletroforese em Gel Bidimensional , Ensaio de Imunoadsorção Enzimática , Feminino , Células Espumosas/metabolismo , Células Espumosas/patologia , Humanos , Fibrose Pulmonar Idiopática/patologia , Fibrose Pulmonar Idiopática/fisiopatologia , Pulmão/metabolismo , Pulmão/patologia , Pulmão/fisiopatologia , Masculino , Camundongos , Pessoa de Meia-Idade , Proteômica/métodos , Fibrose Pulmonar/induzido quimicamente , Fibrose Pulmonar/tratamento farmacológico , Fibrose Pulmonar/metabolismo , RNA Mensageiro/biossíntese , RNA Mensageiro/genética , Reação em Cadeia da Polimerase Via Transcriptase Reversa
19.
Korean J Radiol ; 11(2): 234-8, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20191072

RESUMO

Primary pulmonary T-cell lymphoma is an extremely rare malady, and we diagnosed this in a 52-year-old male who was admitted to our hospital with cough for the previous two weeks. The chest CT demonstrated multiple variable sized mass-like consolidations with low density central necrosis in the peripheral portion of both the upper and lower lobes. Positron emission tomography (PET) showed multiple areas of hypermetabolic fluorodeoxyglucose (FDG) uptake in both lungs with central metabolic defects, which correlated with central necrosis seen on CT. The histological sample showed peripheral T-cell lymphoma of the not otherwise specified form. The follow-up CT scan showed an increased extent of the multifocal consolidative lesions despite that the patient had undergone chemotherapy.


Assuntos
Neoplasias Pulmonares/diagnóstico por imagem , Linfoma de Células T/diagnóstico por imagem , Meios de Contraste , Tosse/etiologia , Diagnóstico Diferencial , Evolução Fatal , Febre/etiologia , Fluordesoxiglucose F18 , Seguimentos , Humanos , Pulmão/diagnóstico por imagem , Neoplasias Pulmonares/complicações , Linfoma de Células T/complicações , Masculino , Pessoa de Meia-Idade , Pneumonia/complicações , Tomografia por Emissão de Pósitrons/métodos , Intensificação de Imagem Radiográfica/métodos , Sudorese , Tomografia Computadorizada por Raios X/métodos
20.
J Hematol Oncol ; 3: 4, 2010 Jan 20.
Artigo em Inglês | MEDLINE | ID: mdl-20089186

RESUMO

No standard has been established for salvage therapy in gemcitabine refractory advanced urothelial cancer. We report the complete response to FOLFOX4 therapy of a metastatic urothelial cancer patient, for whom adjuvant gemcitabine plus cisplatin combination chemotherapy had failed. A 54-year-old male patient with urothelial cancer (transitional cell carcinoma) in the right kidney underwent three rounds of adjuvant gemcitabine-cisplatin chemotherapy after extensive radical nephrectomy. However, he had new liver, lung metastases and synchronous two separate primary colon cancer. The lung metastasis lesion was confirmed as a metastatic urothelial cancer via percutaneous transthoracic needle biopsy (PTNB). Liver and lung metastasis lesions disappeared after the 4th cycle of FOLFOX4 chemotherapy. In addition, colon cancer also disappeared after the 8th cycle of FOLFOX4 chemotherapy. The patient was still showing a complete response after 4 months. Clinical trials using the FOLFOX regimen as salvage therapy for gemcitabine-refractory advanced urothelial cancer are warranted.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma de Células de Transição/tratamento farmacológico , Neoplasias Urológicas/tratamento farmacológico , Carcinoma de Células de Transição/patologia , Progressão da Doença , Fluoruracila/uso terapêutico , Humanos , Leucovorina/uso terapêutico , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/secundário , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica , Compostos Organoplatínicos/uso terapêutico , Indução de Remissão/métodos , Resultado do Tratamento , Neoplasias Urológicas/patologia , Urotélio/efeitos dos fármacos , Urotélio/patologia
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