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31.
Belmiro CL Souza HS Elia CC Castelo-Branco MT Silva FR Machado RL Pavão MS 《International journal of colorectal disease》2005,20(4):295-304
OBJECTIVES: Changes in extracellular matrix glycosaminoglycans (GAGs) of the intestinal mucosa have been associated with inflammatory bowel disease. The aim of the present study was to follow the changes in GAGs metabolism during the progression from non-inflamed to inflamed intestinal colon of patients with Crohn's disease (CD), using direct biochemical analysis and specific immunohistochemistry against chondroitin/dermatan sulfate and heparan sulfate. DESIGN AND METHODS: The content of GAGs from inflamed and non-inflamed colon of eight patients with active CD was estimated by uronic acid per dry weight of tissue and analyzed by agarose gel electrophoresis and ion-exchange chromatography. Intestinal sections were stained using antibodies against dermatan sulfate/chondroitin 4-sulfate (DS/CS), heparan sulfate (HS), and ICAM-1 (CD54), and analyzed by confocal microscopy. RESULTS: There was a reduction in the amount of GAGs in the non-inflamed colon of patients with CD. In the inflamed colon, HS, CS and DS showed increased concentrations compared with the non-inflamed colon. GAGs showed a diffuse distribution in the lamina propria and in the basement membrane of both inflamed and non-inflamed mucosa of patients with CD. CONCLUSION: We observed a marked reduction in GAGs with altered patterns of distribution in the non-inflamed colon of patients with CD. The increase in the synthesis of GAGs observed in the inflamed colon may be a compensatory mechanism for the restoration of the integrity of the intestinal mucosa. 相似文献
32.
Ana Maria Passos Tiago Pires Heringer José Osmar Medina‐Pestana Maria Lucia Gomes Ferraz Celso Francisco Hernandes Granato 《Journal of medical virology》2013,85(4):615-619
Hepatitis E virus (HEV) causes acute and chronic hepatitis in organ transplant recipients. Serological evidence for HEV infection has been discovered in various population groups in Brazil, and a single acute case has been confirmed. To date, however, no cases of HEV infection in immunocompromised patients have been reported in Brazil. This study aimed to identify and characterize hepatitis E cases in renal transplant recipients in Brazil. A retrospective study was performed on 96 serum samples from renal transplant recipients with unexplained liver enzymes elevation. Three confirmed cases of HEV infection were identified that lacked seroconversion to HEV IgG antibodies. The prevalence of HEV in these patients was 3.1%. Using a sequence analysis of a 304‐nucleotide fragment within ORF2, the strains were classified as genotype 3 with a low percent identity to previously characterized strains. This is the first report of hepatitis E infection in renal transplant recipients in Brazil, and the data indicate that a novel genotype 3 subvariant may be present and that further investigation is necessary to characterize the circulating HEV strains. In this setting, HEV infection should be considered as a potential cause of abnormal liver tests of unknown origin. J. Med. Virol. 85:615–619, 2013. © 2013 Wiley Periodicals, Inc. 相似文献
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Trimetazidine improves left ventricular function and quality of life in elderly patients with coronary artery disease. 总被引:9,自引:0,他引:9
Cristiana Vitale Mauricio Wajngaten Barbara Sposato Otavio Gebara Paola Rossini Massimo Fini Maurizio Volterrani Giuseppe M C Rosano 《European heart journal》2004,25(20):1814-1821
AIM: Elderly patients have an increased incidence of ischaemic dilated cardiomyopathy often related to diffuse coronary artery disease. Trimetazidine protects ischaemic myocardium by improving the myocardial energy utilisation during myocardial ischaemia. Aim of the present study was to evaluate the effects of trimetazidine on left ventricular (LV) function in elderly patients with ischaemic heart disease and reduced LV function. METHODS: Forty seven elderly patients (40 males and 7 females, mean age 78+/-3 years) were randomised to receive, in addition to standard therapy, either trimetazidine or placebo and were evaluated by echocardiography at baseline and after 6 months. RESULTS: Trimetazidine and placebo had no effect on either blood pressure or heart rate (SBP 2+/-5 vs 4+/-6 mmHg, DBP -1+/-6 vs 3+/-4 mmHg, HR -3+/-7 vs 5+/-9 bpm, trimetazidine and placebo compared to baseline, respectively). At the end of the study patients randomised to trimetazidine showed a significant greater left ventricular function and smaller left ventricular diastolic and systolic diameters and volume indices compared to patients receiving placebo (LVEF: 34.4+/-2.3% vs 27+/-2.8%, p<0.0001; LVEDD: 58.6+/-1.9 mm vs 64+/-1.7 mm, p<0.0001; LVESD: 44.5+/-1.1 vs 50+/-0.8 mm, p<0.0001). A significant smaller wall motion score index was detected in trimetazidine-treated patients compared to those allocated to placebo (1.24+/-0.12 vs 1.45+/-0.19, p<0.01), the percentage change in LVEF compared to baseline was also significantly greater in trimetazidine-treated patients. Diastolic function significantly improved in the trimetazidine group while it remained unchanged in the placebo group. At follow-up evaluation, patients receiving trimetazidine showed a greater improvement in angina and NYHA class than patients allocated to placebo. Quality of life significantly improved in all patients treated with trimetazidine while remained unchanged in those allocated to placebo. CONCLUSION: In elderly patients with ischaemic cardiomyopathy trimetazidine in addition to standard medical therapy has a beneficial effect on LV systolic and diastolic function, and improves quality of life. 相似文献
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After laryngectomy for treatment of laryngeal cancer, the distal esophageal contractions have low amplitude. Our hypothesis is that proximal esophageal contractions are also impaired. We studied the proximal esophageal contractions in 20 laryngectomized patients (16 men) with a mean age of 44.2 years, 12 rehabilitated patients with esophageal speech, and 12 controls (7 men, mean age of 46.5 years). We used the manometric method with continuous perfusion. All subjects were studied in the sitting position and performed five swallows of a 5-ml bolus of water alternated with five dry swallows. The contractions were measured 2 cm below the high-pressure zone of the pharyngoesophageal transition. The results showed that the amplitude and duration of contractions were different in laryngectomized patients compared with controls. The amplitude of contractions of patients (wet swallows: 37.3 ± 20.7 mmHg, mean ± SD) was lower than that of controls (81.1 ± 31.7 mmHg). The duration of contractions was also lower in laryngectomized patients (2.2 ± 0.7 s) than in controls (2.6 ± 0.6 s). We conclude that the proximal esophageal contraction amplitude and duration of laryngectomized patients are lower than controls, a fact suggesting that laryngectomy may affect the proximal esophageal contractions. 相似文献
39.
Frota Filho JD Lucchese FA Leães P Valente LA Vieira MS Blacher C 《Arquivos brasileiros de cardiologia》2002,78(6):586-591
Cardiac angiosarcomas are malignant tumors that almost invariably have a short and fatal evolution. The therapeutic approach includes surgery, chemotherapy, and radiation therapy, alone or in combination. Heart transplantation is an attractive option in nonresectable tumors, even though the current experience is still limited. However, in most patients, the diagnosis is still established late, and survival is only slightly altered by the proposed treatments, mainly due to previously existing and undetected metastases. We report a case that illustrates the therapeutic dilemma faced with this neoplasia, and we discuss the case based on a literature review. 相似文献
40.
Carla Augusto Holms Denise Aya Otsuki Marcia Kahvegian Cristina Oliveira Massoco Denise Tabacchi Fantoni Paulo Sampaio Gutierrez Jose Otavio Costa Auler Junior 《Clinics (S?o Paulo, Brazil)》2015,70(8):577-583