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1.
Am J Gastroenterol ; 117(11): 1816-1824, 2022 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-35973181

RESUMO

INTRODUCTION: Noninvasive criteria to predict the progression of low-risk esophageal varices (EV) in patients with compensated hepatitis C virus (HCV) cirrhosis after sustained virological response (SVR) by direct-acting antivirals (DAAs) are lacking. Our aim was to assess the diagnostic performance of Rete Sicilia Selezione Terapia-HCV (RESIST-HCV) criteria for EV progression compared with elastography-based criteria (Baveno VI, Expanded Baveno VI, and Baveno VII-HCV criteria). METHODS: All consecutive patients observed at 3 referral centers with compensated HCV cirrhosis with or without F1 EV who achieved sustained virological response by DAAs were classified at last esophagogastroduodenoscopy (EGDS) as RESIST-HCV low risk (i.e., low probability of high-risk varices [HRV]) if platelets were >120 × 10 9 /L and serum albumin >3.6 g/dL or RESIST-HCV high risk (i.e., high probability of HRV) if platelets were <120 × 10 9 /L or serum albumin <3.6 g/dL. The primary outcome was the progression to HRV. The area under the receiver operating characteristic curve and decision curve analysis of noninvasive criteria were calculated. RESULTS: The cohort consisted of 353 patients in Child-Pugh class A (mean age 67.2 years, 53.8% males). During a mean follow-up of 44.2 months, 34 patients (9.6%, 95% CI 6.7%-13.5%) developed HRV. At the last EGDS, 178 patients (50.4%) were RESIST-low risk, and 175 (49.6%) were RESIST-high risk. RESIST-HCV criteria showed the highest area under the receiver operating characteristic curve (0.70, 95% confidence interval 0.65-0.75), correctly sparing the highest number of EGDS (54.3%), with the lowest false-positive rate (45.7%), compared with elastography-based criteria. Decision curve analysis showed that RESIST-HCV had higher clinical utility than elastography-based criteria. DISCUSSION: Biochemical-based RESIST-HCV criteria are useful to easily predict HRV development after HCV eradication by DAAs in patients with compensated cirrhosis and low-risk EV.


Assuntos
Técnicas de Imagem por Elasticidade , Varizes Esofágicas e Gástricas , Hepatite C Crônica , Masculino , Humanos , Idoso , Feminino , Varizes Esofágicas e Gástricas/diagnóstico , Varizes Esofágicas e Gástricas/etiologia , Varizes Esofágicas e Gástricas/tratamento farmacológico , Hepacivirus , Antivirais/uso terapêutico , Hepatite C Crônica/complicações , Hepatite C Crônica/tratamento farmacológico , Contagem de Plaquetas , Cirrose Hepática/diagnóstico , Albumina Sérica
2.
Hepatol Commun ; 6(5): 1032-1044, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35146945

RESUMO

Nonalcoholic fatty liver disease (NAFLD) is an emerging cause of liver-related events (LREs). Here, we have assessed the ability of a composite score based on clinical features, metabolic comorbidities, and genetic variants to predict LREs. A total of 546 consecutive patients with NAFLD were recruited and stratified according to the fibrosis-4 (FIB-4) index. LREs were defined as occurrence of hepatocellular carcinoma or hepatic decompensation. Cox regression multivariate analysis was used to identify baseline variables associated with LREs. The UK Biobank was used as the validation cohort, and severe liver disease (incidence of cirrhosis, decompensated liver disease, hepatocellular carcinoma, and/or liver transplantation) was used as the outcome. LREs were experienced by 58 patients, only one of whom was in the cohort of patients with a FIB-4 score < 1.3. Multivariate Cox regression analysis of 229 patients with a FIB-4 score ≥ 1.3 highlighted clinical variables independently associated with the development of LREs, including older age, low platelet count, low albumin, low high-density lipoprotein cholesterol, certain genetic factors, and interactions between genetic factors and sex or diabetes. The area under the curve (AUC) for the model was 0.87 at 1, 3, and 5 years. Our novel Genetic and Metabolic Staging (GEMS) scoring system was derived from the Cox model linear predictor, ranked from 0 to 10, and categorized into five classes (0-5, 5-6, 6-7, 7-8, and 8-10). The risk of LREs increased from 4% in patients in the best class (GEMS score 0-5) to 91% in the worst (GEMS score 8-10). GEMS score was associated with incident severe liver disease in the study population (hazard ratio, 1.56; 95% confidence interval, 1.48-1.65; P < 0.001) as well as in the UK Biobank cohort where AUCs for prediction of severe liver disease at 1, 3, and 5 years were 0.70, 0.69, and 0.67, respectively. Conclusion: The novel GEMS scoring system has an adequate ability to predict the outcome of patients with NAFLD.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , Hepatopatia Gordurosa não Alcoólica , Carcinoma Hepatocelular/complicações , Humanos , Cirrose Hepática/complicações , Neoplasias Hepáticas/complicações , Hepatopatia Gordurosa não Alcoólica/genética
3.
Foods ; 9(9)2020 Aug 23.
Artigo em Inglês | MEDLINE | ID: mdl-32842539

RESUMO

Quali-quantitative analyses of anthocyanins and non-anthocyanin phenolic compounds performed with the use of liquid chromatography coupled with high resolution mass spectrometry, were evaluated in juice of pomegranate fruits ('Dente di Cavallo'), in relation to different light exposures (North, South, West and East). A total of 16 compounds were identified, including phenolic acids, flavonoids, hydrolysable tannins, and anthocyanins, known for their health-promoting effects. Striking differences were observed about the total phenolic content, which was high in juices from fruits with east- and north-facing position, while it was lower in juices facing south. The greatest contents of total flavonoids and anthocyanins were recorded in fruit juices with southern exposure; however, there are no great differences in the content in phenolic acids. Tannins were mainly synthesized in fruit juices with West exposure. The results showed that the position within the tree had no significant effects on color juice, however, it significantly (p < 0.05) affected data on fruit weight, soluble sugars and juice yield. Remarkable synergies existed among polyphenols and phytochemicals in pomegranate juice, but collecting fruits with different solar exposure could enhance different health benefits, i.e., the juices with higher polyphenols content could have more anticancer effect or those with higher tannins content could have more antimicrobial effect.

4.
Neuroradiol J ; 29(3): 174-8, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26944065

RESUMO

Olfactory schwannomas, also described as subfrontal or olfactory groove schwannomas, are very rare tumors, whose pathogenesis is still largely debated. We report a case of olfactory schwannoma in a 39-year-old woman who presented with anosmia and headache. The clinical examination did not show lesions in the nose-frontal region and there was no history of neurofibromatosis. Head MRI and CT scan revealed a lobulated extra-axial mass localized in the right anterior cranial fossa that elevated the ipsilateral frontal pole. Bilateral frontal craniotomy demonstrated a tumor strictly attached to the right portion of the cribriform plate that surrounded the right olfactory tract, not clearly identifiable. The immunohistochemical analysis suggested the diagnosis of typical schwannoma. The patient was discharged without any neurological deficit and a four-month postoperative MRI scan of the brain showed no residual or recurrent tumor.


Assuntos
Neoplasias dos Nervos Cranianos/diagnóstico por imagem , Craniotomia , Neurilemoma/diagnóstico por imagem , Doenças do Nervo Olfatório/diagnóstico por imagem , Adulto , Neoplasias dos Nervos Cranianos/patologia , Neoplasias dos Nervos Cranianos/cirurgia , Feminino , Humanos , Imageamento por Ressonância Magnética , Neurilemoma/patologia , Neurilemoma/cirurgia , Doenças do Nervo Olfatório/patologia , Doenças do Nervo Olfatório/cirurgia , Tomografia Computadorizada por Raios X , Resultado do Tratamento
5.
Ann Ital Chir ; 84(5): 501-4, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24141252

RESUMO

Pneumatic dilation and botulinum toxin:when and why? The endoscopic treatment options of achalasia include botulinum toxin (BT) injection and pneumatic dilation (PD) of the lower esophageal sphincter (LES). BT can reduce the LES pressure by blocking the release of acetylcoline from presynaptic cholinergic nerve terminals in the myenteric plexus. Although the procedure is safe and good initial response is reported, there is a wide variability in the duration of the response and the effect tends to decrease over time. BT is usually recommended for elderly patients or patients with comorbid illnesses, who are poor candidates for more invasive procedures. PD aims at tearing the muscle fibers of the LES and is considered the most effective nonsurgical treatment for achalasia. Technical details of the procedure vary in different institutions and in many clinical settings the choice between PD or minimally invasive surgical myotomy depends upon local expertise in the procedures. Further endoscopic treatment options such as submucosal esophageal myotomy or self-expanding metallic stents are being studied.


Assuntos
Inibidores da Liberação da Acetilcolina/uso terapêutico , Toxinas Botulínicas/uso terapêutico , Acalasia Esofágica/terapia , Esofagoscopia , Terapia Combinada , Dilatação/instrumentação , Humanos
6.
Mol Med Rep ; 2(2): 241-4, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-21475819

RESUMO

The translocation t(9;11)(p22;q23) generates the MLL-AF9 oncogene and is commonly associated with monocytic acute myeloid leukemia (AML-M5; FAB-classification). For the oncogenicity of MLL-AF9, the (over)expression of several other genes, including selected HOXA cluster genes as well as MEIS1 (a HOX cofactor), is required. We previously showed that the down-regulation of MLL-AF9 expression is not obligatory for monocyte-macrophage maturation in AML-M5 cells carrying t(9;11)(p22;q23). In this study, we analyzed the expression patterns of HOXA4, 5, 6, 7, 9, 10 and 11 (defined as 'HOXA-code' genes) and MEIS1 by semiquantitative RT-PCR during the monocyte-macrophage differentiation induced by phorbol 12-myristate 13-acetate (PMA) in THP-1 cells carrying t(9;11)(p22;q23) and expressing MLL-AF9. The analyses were performed in THP-1 cells expressing MLL-AF9 even after PMA treatment. The results showed that all the analyzed genes were expressed in untreated THP-1 cells. After the induction of differentiation, we observed a down-regulation of HOXA4, 7, 10, 11 and MEIS1, an up-regulation of HOXA6, and no significant variation in the expression of HOXA5 and 9. These data indicate that the expression of most HOXA-code genes, as well as MEIS1, could be implicated in the differentiation blockage observed in MLL-AF9-related leukemias.

7.
Cancer Biother Radiopharm ; 22(1): 50-5, 2007 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-17627413

RESUMO

BACKGROUND: We previously reported on an improvement in survival and quality of life in chemotherapy-naïve patients with advanced non-small-cell lung cancer and low performance status (PS) treated with a combination of biotherapeutical agents and cyclophosphamide. In this study, we assessed the survival, clinical status, and toxicity of this multidrug regimen in chemotherapy-pretreated patients with advanced lung adenocarcinoma and low PS. METHODS: Patients with stage IIIB or IV lung adenocarcinoma, who had progressed after prior standard chemotherapy, and with an Eastern Cooperative Oncology Group PS > or = 2, received a daily combination of somatostatin, retinoids, melatonin, vitamin D, bromocriptine, and cyclophosphamide. RESULTS: Twenty-three (23) patients were enrolled. The median age was 59 years (range, 42-75). The PS was 2 and 3 in 73.9% and 26.1% of patients, respectively. The median overall survival (intent-to-treat analysis) was 95 days (range, 19-214). The side-effects were mild, mostly consisting of diarrhea, nausea and vomiting, and drowsiness of Grade 1-2. There was an improvement in both respiratory and general symptoms, which was more evident in patients surviving more than 95 days. CONCLUSIONS: The combined regimen of somatostatin, retinoids, melatonin, vitamin D, bromocriptine, and cyclophosphamide is well tolerated and can improve disease-related symptoms in heavily pretreated patients with late-stage lung adenocarcinoma and poor PS.


Assuntos
Bromocriptina/uso terapêutico , Ciclofosfamida/uso terapêutico , Neoplasias Pulmonares/tratamento farmacológico , Melatonina/uso terapêutico , Retinoides/uso terapêutico , Somatostatina/uso terapêutico , Vitamina D/uso terapêutico , Adenocarcinoma/tratamento farmacológico , Adenocarcinoma/patologia , Adulto , Idoso , Bromocriptina/efeitos adversos , Ciclofosfamida/efeitos adversos , Quimioterapia Combinada , Feminino , Humanos , Neoplasias Pulmonares/patologia , Masculino , Melatonina/efeitos adversos , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Retinoides/efeitos adversos , Somatostatina/efeitos adversos , Taxa de Sobrevida , Resultado do Tratamento , Vitamina D/efeitos adversos
8.
Cancer Biother Radiopharm ; 21(1): 68-73, 2006 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-16480333

RESUMO

BACKGROUND: The prognosis of low performance status (PS) patients with advanced non-small-cell-lung cancer (NSCLC) is dismal. In these patients, we have determined the survival, clinical benefits, and toxicity of a multidrug regimen, based on cyclophosphamide and biotherapeutical agents. METHODS: Patients with a diagnosis of stage IIIB or stage IV NSCLC, no previous surgery or chemoradiotherapy, and an Eastern Cooperative Oncology Group (ECOG) PS equal to or greater than 2 received a daily combination of somatostatin, retinoids, melatonin, vitamin D, bromocriptine, and cyclophosphamide. RESULTS: Twenty-eight (28) patients were enrolled. The median age was 64 years (range, 35-74). The PS was 2 and 3 in 78.6% and 21.4% of patients, respectively. The median overall survival (intent-to-treat analysis) was 12.9 months (range, 1.5-33.5 months), The overall survival rates at 1 and 2 years were 51.2% and 21.1%, respectively. The side-effects were very mild, mostly consisting of diarrhoea, nausea/vomiting, and drowsiness of grade 1-2. Most patients experienced an improvement of both respiratory (cough and dyspnoea) and general (pain, fatigue, and insomnia) symptoms. CONCLUSIONS: Low PS patients with advanced NSCLC may benefit from a combination of somatostatin, retinoids, melatonin, vitamin D, bromocriptine, and cyclophosphamide, in terms of survival and quality of life, with very low side-effects.


Assuntos
Bromocriptina/uso terapêutico , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Ciclofosfamida/uso terapêutico , Melatonina/uso terapêutico , Retinoides/uso terapêutico , Somatostatina/uso terapêutico , Vitamina D/uso terapêutico , Adulto , Idoso , Carcinoma Pulmonar de Células não Pequenas/mortalidade , Carcinoma Pulmonar de Células não Pequenas/patologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Qualidade de Vida , Análise de Sobrevida , Fatores de Tempo
9.
Oncol Rep ; 15(1): 207-11, 2006 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16328057

RESUMO

The MLL-AF9 oncogene originates from the translocation t(9;11)(p22;q23), which is mainly associated with monocytic acute myeloid leukaemia (AML-M5; FAB-classification). In AML-M5 THP-1 cells carrying t(9;11) (p22;q23) and expressing MLL-AF9, we previously showed that MLL-AF9 expression is down-regulated during monocyte-macrophage maturation. We have subsequently observed that in a 'rapid-growing' variant of the THP-1 cell line (THP-1-R) MLL-AF9 down-regulation does not occur. MLL fusion proteins (including MLL-AF9) deregulate MYC transactivation activity, and both presence and absence of MYC down-regulation have been reported during monocyte-macrophage maturation in THP-1 cells. In the present study, we analyze the expression patterns of MLL-AF9, MLL wild-type and MYC after induction of monocyte-macrophage terminal differentiation in the AML-M5 cell lines, THP-1, THP-1-R, Mono-Mac-6 (MM6) and MOLM-13, all of which carry t(9;11)(p22;q23) and express MLL-AF9. RT-PCR analysis indicated that down-regulation of MLL-AF9, MLL or MYC is not necessary to abolish malignant phenotypes by induction of terminal monocyte-macrophage differentiation in leukaemic cells carrying t(9;11)(p22;q23).


Assuntos
Leucemia Monocítica Aguda/genética , Macrófagos/citologia , Monócitos/citologia , Proteína de Leucina Linfoide-Mieloide/genética , Proteínas de Fusão Oncogênica/genética , Proteínas Proto-Oncogênicas c-myc/genética , Diferenciação Celular/genética , Cromossomos Humanos Par 11/genética , Cromossomos Humanos Par 9/genética , Regulação para Baixo , Histona-Lisina N-Metiltransferase , Humanos , Leucemia Monocítica Aguda/imunologia , Translocação Genética
10.
Pediatr Blood Cancer ; 45(5): 700-5, 2005 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-15926158

RESUMO

BACKGROUND: Data on the presence of myocardial abnormalities in long-term Hodgkin disease survivors are contradictory. The purpose of this study was to determine if myocardial performance index (MPI) was capable of discovering cardiac abnormalities. PROCEDURE: Echocardiographic evaluation was performed in 31 survivors of Hodgkin disease (mean age 17.0 years), who received doxorubicin as part of chemotherapeutic treatment (median dose 164.8 +/- 42.5 mg/m(2)). Control group comprised 22 healthy subjects (mean age 16.7 years). RESULTS: Peak A velocity was increased (P = 0.004) and peak E/A velocity ratio was lower (P = 0.002) in patients compared to controls. Mean isovolumetric contraction time was longer in patients than in controls (P = 0.0001). Ejection time was significantly shorter in patients than in the controls (P = 0.001). Consequently, the MPI was significantly greater in the patients than in the controls (P = 0.0001). Abnormal MPI was found in 25/31 patients (83%). CONCLUSIONS: The Doppler-derived index of combined systolic and diastolic myocardial performance demonstrates the presence of subtle cardiac abnormalities in the majority of Hodgkin disease survivors.


Assuntos
Ecocardiografia , Doença de Hodgkin/fisiopatologia , Disfunção Ventricular Esquerda/diagnóstico por imagem , Função Ventricular Esquerda , Adolescente , Feminino , Hemodinâmica , Doença de Hodgkin/complicações , Humanos , Masculino , Sobreviventes , Disfunção Ventricular Esquerda/etiologia
11.
Paediatr Drugs ; 7(2): 67-76, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-15871628

RESUMO

The fact that anthracyclines are cardiotoxic seriously narrows their therapeutic index in cancer therapy. The cardiotoxic risk increases with the cumulative dose and may lead to congestive heart failure (CHF) and dilated cardiomyopathy in adults and in children. The prevention of anthracycline-induced cardiotoxicity is particularly important in children who can be expected to survive for decades after being cured of their malignancy. Attempts to reduce anthracycline cardiotoxicity have been directed towards: (i) decreasing myocardial concentrations of anthracyclines and their metabolites by dose limitation and schedule modification; (ii) developing less cardio-toxic analogs; and (iii) concurrently administering cardioprotective agents to attenuate the effects of anthracyclines on the heart. As regards schedule modification, avoidance of anthracycline peak levels may reduce the pathologic and clinical cardiotoxicity, although this has not always been observed. The analogs of doxorubicin, such as idarubicin and epirubicin, have similar cardiotoxicity to that of doxorubicin when given in amounts of equivalent myelotoxicity. Liposomal anthracyclines are a new class of agents that may permit more specific organ targeting, thereby producing less systemic and cardiac toxicity, but more studies are required to assess the advantages, if any, of these preparations over classical anthracyclines. The cardioprotective agent, dexrazoxane, an iron chelator, is highly effective and provides short-term cardioprotection to most patients receiving even the most intensive doxorubicin-containing regimens. Its long-term benefits remain to be determined. In addition, data remain insufficient to make specific recommendations regarding current use of dexrazoxane in children. It is thought that subtle abnormalities, related to anthracycline treatment in childhood, can develop into more permanent myocardial disease resulting in cardiomyopathy, which may progress to CHF. As regards the therapy of patients with anthracycline cardiotoxicity, two different situations have, therefore, to be considered: (i) if the patient presents with cardiac abnormalities, such as a reduction in fractional shortening at echocardiogram, without cardiac symptoms; and (ii) if the patient has CHF. In the presence of CHF, recovery with digitalis-diuretic therapy alone seldom occurs, and in patients who have refractory hemodynamic decompensation, heart transplantation is indicated. In patients with CHF, therapy with ACE inhibitors induces improvement in left ventricular structure and function, but this improvement is transient. Randomized clinical trials are, therefore, necessary to determine the effects of ACE inhibitors in mild-to-moderate left ventricular dysfunction. The beneficial effects of beta-adrenoceptor antagonists (beta-blockers) on cardiac function in heart failure due to anthracyclines seem comparable with those observed in other forms of heart failure with systolic dysfunction. Many drugs are available to treat children with CHF due to anthracycline treatment, but they are only palliative.


Assuntos
Antraciclinas/efeitos adversos , Cardiomiopatias/induzido quimicamente , Cardiomiopatias/prevenção & controle , Antraciclinas/uso terapêutico , Criança , Humanos , Neoplasias/tratamento farmacológico
12.
Ital Heart J Suppl ; 5(4): 294-7, 2004 Apr.
Artigo em Italiano | MEDLINE | ID: mdl-15346697

RESUMO

Anthracyclines, found to be efficacious in the treatment of a broad spectrum of pediatric malignancies, are cardiotoxic and may lead to heart failure even a long time after successful treatment of cancer. It is thought that subtle abnormalities can progress to the more permanent myocardial disease, resulting in cardiomyopathy which may progress to congestive heart failure. There are some precipitating factors leading to the sudden onset of cardiac symptoms such as increase in afterload or preload. We describe a young patient with congestive heart failure treated with doxorubicin (cumulative mean dose 420 mg/m2) in infancy because of pelvic sarcoma in whom the appearance of symptoms was related to pulmonary embolism. Four years before hospital admission, the patient presented echocardiographic abnormalities such as left ventricular fractional shortening and thickness reduction and he was treated with ACE-inhibitors. The myocardial ischemia, which is present in pulmonary embolism, probably worsened the left ventricular systolic function and caused congestive heart failure.


Assuntos
Antraciclinas/efeitos adversos , Antibióticos Antineoplásicos/efeitos adversos , Doxorrubicina/efeitos adversos , Insuficiência Cardíaca/induzido quimicamente , Adolescente , Humanos , Masculino , Sarcoma/tratamento farmacológico
14.
Ital Heart J Suppl ; 5(4): 294-7, 2004 Apr.
Artigo em Italiano | MEDLINE | ID: mdl-15185468

RESUMO

Anthracyclines, found to be efficacious in the treatment of a broad spectrum of pediatric malignancies, are cardiotoxic and may lead to heart failure even a long time after successful treatment of cancer. It is thought that subtle abnormalities can progress to the more permanent myocardial disease, resulting in cardiomyopathy which may progress to congestive heart failure. There are some precipitating factors leading to the sudden onset of cardiac symptoms such as increase in afterload or preload. We describe a young patient with congestive heart failure treated with doxorubicin (cumulative mean dose 420 mg/m2) in infancy because of pelvic sarcoma in whom the appearance of symptoms was related to pulmonary embolism. Four years before hospital admission, the patient presented echocardiographic abnormalities such as left ventricular fractional shortening and thickness reduction and he was treated with ACE-inhibitors. The myocardial ischemia, which is present in pulmonary embolism, probably worsened the left ventricular systolic function and caused congestive heart failure.


Assuntos
Antibióticos Antineoplásicos/efeitos adversos , Doxorrubicina/efeitos adversos , Insuficiência Cardíaca/induzido quimicamente , Adolescente , Humanos , Masculino , Fatores de Tempo
15.
Oncogene ; 22(54): 8671-6, 2003 Nov 27.
Artigo em Inglês | MEDLINE | ID: mdl-14647461

RESUMO

The MLL-AF9 oncogene - one of the most frequent MLL/HRX/ALL-1 rearrangements found in infantile and therapy-related leukaemias - originates from t(9;11)(p22;q23) and is mainly associated with monocytic acute myeloid leukaemia (AML-M5; FAB-classification). Here, we investigated the MLL-AF9 function by means of an antisense phosphorothioate-oligodeoxyribonucleotide (MLL-AF9-PS-ODNas) using the THP-1 AML-M5 cell line carrying t(9;11). Having confirmed that MLL-AF9-PS-ODNas induces strong inhibition of THP-1 cell growth, but only a moderate increase in apoptosis, we found that MLL-AF9-PS-ODNas did not induce morpho-functional terminal differentiation or restore M-CSF-, G-CSF- or GM-CSF-induced differentiation. Moreover, THP-1 cells showed the same phenotype with/without MLL-AF9-PS-ODNas. In THP-1 cells differentiated to mature macrophage-like cells by PMA/TPA or ATRA, MLL-AF9 expression was downregulated. Thus, in the monocytic lineage, MLL-AF9 may be expressed only in early phases and can induce deregulated amplification in both nonmalignant and malignant cells, maintaining the monocytic phenotype without blocking final maturation. Our findings suggest that: (1) as well as directly promoting cell growth, MLL-AF9 may also indirectly determine phenotype; (2) other leukaemogenic mutations associated with MLL-AF9-related leukaemias should be searched for mainly in processes of resistance to apoptosis (where MLL-AF9 may play only a limited role) and differentiation blockage (where MLL-AF9 may play no role).


Assuntos
Macrófagos/fisiologia , Monócitos/fisiologia , Proteínas de Fusão Oncogênica/genética , Oncogenes/fisiologia , Diferenciação Celular , Divisão Celular , Linhagem Celular , Regulação para Baixo , Humanos , Proteína de Leucina Linfoide-Mieloide , Proteínas de Fusão Oncogênica/fisiologia
16.
Echocardiography ; 20(1): 63-6, 2003 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-12848699

RESUMO

Abscesses are an important and potentially devastating complication of aortic valve endocarditis. The extension of the infectious process from the aortic valve to surrounding tissue can occur in different directions. This case report describes a 28-year-old man in whom the abscess of the aortic annulus was very large, causing a moderate aortic systolic obstruction, and also involved the left ventricular inferior wall. The diagnosis was provided by a combination of TTE and TEE examination and was confirmed by cardiac surgery.


Assuntos
Abscesso/diagnóstico por imagem , Estenose da Valva Aórtica/etiologia , Ecocardiografia Transesofagiana , Ecocardiografia , Endocardite Bacteriana/complicações , Obstrução do Fluxo Ventricular Externo/etiologia , Adulto , Valva Aórtica/diagnóstico por imagem , Estenose da Valva Aórtica/diagnóstico por imagem , Endocardite Bacteriana/diagnóstico por imagem , Ventrículos do Coração , Humanos , Masculino , Obstrução do Fluxo Ventricular Externo/diagnóstico por imagem
17.
Am J Cardiol ; 92(3): 359-61, 2003 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-12888156

RESUMO

The aim of this report was to evaluate late left ventricular function in survivors of Wilms' tumor and to compare patients treated with anthracyclines with those treated without anthracycline and with normal subjects. Wilms' tumor survivors treated without anthracycline had no myocardial abnormalities. A large percentage of patients treated with anthracycline presented with increased end-systolic wall stress. Results indicate that there is a high incidence of subclinical cardiovascular abnormalities in such patients.


Assuntos
Antraciclinas/uso terapêutico , Ecocardiografia , Ventrículos do Coração/diagnóstico por imagem , Neoplasias Renais/tratamento farmacológico , Função Ventricular Esquerda/efeitos dos fármacos , Tumor de Wilms/tratamento farmacológico , Adolescente , Adulto , Pesos e Medidas Corporais , Volume Cardíaco/fisiologia , Criança , Pré-Escolar , Feminino , Seguimentos , Humanos , Neoplasias Renais/diagnóstico por imagem , Masculino , Valores de Referência , Sobreviventes , Resultado do Tratamento , Tumor de Wilms/diagnóstico por imagem
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