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1.
Egyptian Journal of Histology [The]. 2014; 37 (1): 175-185
in English | IMEMR | ID: emr-160198

ABSTRACT

Preclinical and clinical studies have demonstrated that omega-3-polyunsaturated fatty acids [omega-3-PUFAs] play a significant role in the prevention of cardiovascular diseases. This study aimed to investigate the possible protective effect of omega-3-PUFAs on isoprenaline [ISP]-induced myocardial fibrosis. Thirty-two adult male albino rats were divided into five groups. Group I represented the control group [eight rats]. In group II, six rats were given omega-3-PUFAs [40 mg/kg/day] orally for 8 weeks. In group III, six rats were injected subcutaneously with ISP [5 mg/kg/day] for 4 consecutive days and sacrificed 2 days later. In group IV, six rats were injected with ISP [5 mg/kg/day] for 4 consecutive days and sacrificed after 2 weeks. In group V, six rats were given omega-3-PUFAs [40 mg/kg/day] for 8 weeks, following which they were injected with ISP [5 mg/kg/day] for 4 consecutive days, and sacrificed 2 days later. Serum creatine phosphokinase-MB [CPK-MB] was measured. Myocardial sections were subjected to H and E, Masson's trichrome stain, and alpha-smooth muscle actin [alpha-SMA] immunohistochemical stain. Group II showed nonsignificant difference in the mean CPK-MB level compared with the control. Myocardial sections revealed a histological architecture similar to that of the control. The mean area% of collagen and alpha-SMA immunoreactivity was nonsignificant when compared with the control. Group III showed significant increase in mean CPK-MB compared with the control. Myocardial sections showed disorganization, inflammation, exudation, and fibrosis with significant increase in the mean area% of collagen and alpha-SMA immunoreactivity compared with the control. Group IV showed significant increase in mean CPK-MB, area% of collagen, and alpha-SMA immunoreactivity compared with the control, with progression in the myocardial histological alterations. Group V showed significant decrease in the mean CPK-MB with decrease in histological changes, and there was significant decrease in the mean area% of collagen and alpha-SMA immunoreactivity compared with the ISP groups. omega-3-PUFAs exert cardioprotective effects against ISP-induced myocardial fibrosis


Subject(s)
Male , Animals, Laboratory , Protective Agents , Isoproterenol/adverse effects , Endomyocardial Fibrosis/therapy , Immunohistochemistry/statistics & numerical data , Microscopy, Polarization/statistics & numerical data , Treatment Outcome , Rats
3.
Arq. méd. ABC ; 17(1/2): 30-37, jan.-dez. 1994. tab, graf
Article in Portuguese | LILACS | ID: lil-163180

ABSTRACT

Os autores, nesta revisao literária, analisam uma importante causa de miocardiopatia tipo restritiva no nosso meio, a endomiocardiofibrose. Descrevem a etiopatogenia, patologia, diagnóstico clínico e complementar e seu tratamento. Concluem que a etiologia ainda é desconhecida, que seu diagnóstico tem evoluido às custas da ecocardiografia Doppler e que o tratamento permanece pouco eficaz, uma vez que a mortalidade cirúrgica, apesar do avanço nas técnicas, é maior que a esperada e a história natural dos pacientes tratados clinicamente também demonstra alta taxa de óbitos em curto espaço de tempo.


Subject(s)
Humans , Endomyocardial Fibrosis , Endomyocardial Fibrosis/diagnosis , Endomyocardial Fibrosis/etiology , Endomyocardial Fibrosis/therapy , Prognosis
4.
Arq. bras. cardiol ; 55(4): 241-244, out. 1990. tab
Article in Portuguese | LILACS | ID: lil-90628

ABSTRACT

Objetivo: Observar a evoluçäo de um grupo de pacientes, durante determinado período, conforme o tratamento instituído. Casuística e Métodos: Cento e vinte e um pacientes com endomiocardiofibrose (EMF) foram seguidos por um período de 11 anos (média = 32 meses). As idades oscilaram entre cinco e 64 anos (méida = 30 anos) e 41 homens e 80 mulheres. Observou-se, durante esse período, a evoluçäo conforme o tratamento instituido. A lesäo era biventricular em 70 casos, ventricular esquerda em 36 e ventricular direita em 15. Os pacientes foram divididos em dois grupos: 62 tratados clinicamente e 59 submetidos a cirurgia para ressecçäo da fibrose e substituiçäo ou reconstruçäo das valvas atrioventriculares. Todos os casos operados apresentavam classe funcional III ou IV (NYHA). Resultados: No grupo clínico houve 24 óbitos, 21 em pacientes com classe IV, um com classe III e dois com classe II. No grupo cirúrgico houve 18 óbitos, 12 precoces e seis tardios. Conclusäo: 1) Todos os pacientes que sobreviveram a operaçäo mostraram melhora da classe funcional; 2) a mortalidade cirúrgica diminuiu nos últimos anos; 3) o tratamento clínico é indicado em pacientes em classe funcional I ou II, por ser a mortalidade baixa neste grupo; 4) o tratamento cirúrgico é indicado em pacientes em classe funcional III ou IV, por ser a mortalidade com o tratamento clínico elevada neste grupos


Purpose: To follow-up a group of patients during a period of time after either clinical or surgical approach. Patients and Methods: A hundred and twenty-one patients were studied retrospectively with endomyocardial fibrosis (EMF) for a period that varied from one month to 11 years (mean = 32 months). Upon entrance, patients had from 5 to 64 years of age (mean = 30), being 41 male and 80 female. Biventricular involvement were present in 70 cases, whereas 36 showed pure left and 15 pure right ventricular involvement. The patients were devided in two grupos. 62 treated clinically, and 59 surgically, the latest defined as fibrosis resection added to atrioventricular valve rebilding or replacement. All surgical cases had a prior III to IV functional class (NYHA). Results: In the clinical group there were 24 fatalities, 21 who were in class IV, 1 in class III, and 2 in class II. In the surgical group there were 18 fatalalities, 12 early and 6 late. Conclusions: (1) All the patients who survived the operation showed functional class improvement; (2) surgical mortality decreased in the latest years; (3) clinical treatment is indicated to patients in classes I and II, groups with low mortality rates; (4) surgical treatment is indicated to patients in classes III and IV, provided that clinical mortality is high in these groups of patients.


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Middle Aged , Endomyocardial Fibrosis/therapy , Retrospective Studies , Follow-Up Studies , Endomyocardial Fibrosis/surgery , Endomyocardial Fibrosis/mortality , Prognosis
5.
RBM rev. bras. med ; 47(9): 391-2, 394, 399-80, passim, set. 1990. ilus
Article in Portuguese | LILACS | ID: lil-89771

ABSTRACT

Baseado na experiência do Instituto do Coraçäo, fundamentada no estudo de 135 casos, discute-se o papel dos exames complementares no diagnóstico da endomiocardiofibrose. Clínica de insuficiência cardíaca congestiva importante é a forma de apresentaçäo mais freqüente. No diagnóstico diferencial deve-se considerar outras síndromes restritivas, especialmente hipertensäo portal. Ecocardiografia e estudo hemodinâmico säo os exames complementares que permitem caracterizar a doença. A conduta clásica é a indicaçäo de ressecçäo da fibrose para todos os pacientes sintomáticos, melhorando-se com esta a sobrevida e a qualidade de vida. A conduta clínica pode ser mantida nos pacientes pouco sintomáticos. O comprometimento ventricular esquerdo é melhor tolerado, ficando os pacientes sintomáticos quando apresentam insuficiência mitral. A lesäo do ventrículo dieito é usualmente menos tolerada e pode determinar alteraçöes sistêmicas que alterariam o prognóstico (como insuficiência hepática) e, portanto, devem ser acompanhadas cuidadosamente. A correçäo cirúrgica deve ser adotada sempre que houver deterioraçäo clínica


Subject(s)
Humans , Endomyocardial Fibrosis , Endomyocardial Fibrosis/diagnosis , Endomyocardial Fibrosis/therapy
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