RESUMO
A study was carried out on the effect of aspirin 175 mg/day on the plasma levels of 6 keto PGF 1 alpha and TXB2 in patients with acute myocardial infarction and in patients subjected to coronary artery bypass surgery. Our results showed a fall in the levels of both the prostagladins from day one to day seven and further from seven to day nine in patients with myocardial infarction treated with aspirin 175 mg/day. In patients with myocardial infarction accompanied by arrhythmias the TXB2 levels dominated over the 6 Keto PGF 1 alpha levels. In the group of patients subjected to coronary bypass surgery but after treatment with aspirin 175 mg/day for a period of five days both 6 keto PGF 1 alpha and TXB2 levels fell significantly.
Assuntos
6-Cetoprostaglandina F1 alfa/sangue , Arritmias Cardíacas/sangue , Aspirina/administração & dosagem , Estudos de Casos e Controles , Ponte de Artéria Coronária , Inibidores de Ciclo-Oxigenase/administração & dosagem , Humanos , Infarto do Miocárdio/sangue , Cuidados Pós-Operatórios , Tromboxano B2/sangue , Fatores de TempoRESUMO
A study was carried out on the plasma levels of 6 Keto PGF1 alpha and Thromboxane B2 (TXB2) in patients with acute myocardial infarction. Our results showed a generalized increase in the levels after acute myocardial infarction. The 6 Keto PGF1 alpha levels increased twice as compared to control values while the TXB2 levels increased nine times as compared to control values. The prostaglandin levels were found to increase from day 1 to day 3 and further from day 3 to day 7. In most of the patients with uncomplicated myocardial infarction the 6 Keto PGF1 alpha levels were higher than the TXB2 levels. In patients with myocardial infarction accompanied by arrhythmias the TXB2 levels dominated over the 6 Keto PGF1 alpha levels.
Assuntos
6-Cetoprostaglandina F1 alfa/sangue , Adulto , Idoso , Arritmias Cardíacas/sangue , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infarto do Miocárdio/sangue , Radioimunoensaio , Tromboxano B2/sangueRESUMO
Dengue hemorrhagic fever (DHF) is an epidemic viral disease. The exact mechanism attributable to platelet and vascular dysfunctions is still obscure. Plasma 6-keto-PGF1a (6KPGF1), the stable metabolite of PGI2 was determined in 60 DHF patients and in 11 non-DHF (NDHF) patients with fever of over 38.5 degrees C to compare with that of 33 normal children (NC) in the same age group (2-15 years). Among 60 DHF patients, 32 had blood obtained during impending shock, whereas blood samples of the remainder were taken during normotension. Their plasma 6 KPGF1 values (mean +/- SE) were 201.06 +/- 12.42 and 132.87 +/- 13.08 pg/ml respectively. All patients had serology positive for acute dengue viral infection. The plasma 6 KPGF1 (mean +/- SE) of 33 NC and 11 - NDHF subjects were 149.82 +/- 4.93 and 108.69 +/- 14.53 respectively. The plasma 6KPGF1 levels of 32 DHF patients with impending shock were significantly higher than those of 28 normotensive DHF patients (p less than 0.005), 33 NC (p less than 0.005) and 11 - NDHF patients (p less than 0.005). However the levels in 28 normotensive DHF patients are not statistically different from the values of 33 NC and 11 - NDHF patients. It is concluded that there is a tendency of excessive PGI2 production in DHF patients during hypotensive crisis.