RESUMEN
Ten patients with amyotrophic lateral sclerosis were treated during 5 consecutive days with intravenous infusion of high-dose human leukocyte interferon-alpha (IFN-alpha) or placebo in a single-blinded randomized trial. To assess the effect of IFN on the water and electrolyte balance, serum electrolytes, creatinine, and antidiuretic hormone as well as urine excretion of electrolytes, aldosterone, and cortisol were measured before the trial and during the fourth day of IFN infusion. Compared with placebo the results showed a significant reduction of the mean serum calcium level (from 2.28 +/- 0.03 mmole/liter to 2.01 +/- 0.06 mmole/liter; p less than 0.01), that of the mean serum osmolality (from 296 +/- 9.9 mosm/kgH2O to 281 +/- 2.5 mosm/kgH2O; p less than 0.05) and that of the mean urinary excretion of magnesium (from 5.32 +/- 2.04 mmoles/liter to 2.65 +/- 1.68 mmoles/liter; p less than 0.05). Careful observation of water and electrolyte balance is emphasized during high-dose IFN treatment.
Asunto(s)
Interferón Tipo I/efectos adversos , Desequilibrio Hidroelectrolítico/inducido químicamente , Esclerosis Amiotrófica Lateral/tratamiento farmacológico , Humanos , Infusiones Intravenosas , Interferón Tipo I/administración & dosificación , Interferón Tipo I/uso terapéutico , Distribución Aleatoria , Método Simple CiegoRESUMEN
Fatty acid patterns of plasma and platelet lipids, platelet aggregation and thromboxane A2 (TxA2) production were studied in young patients (n = 12) with brain infarction and in healthy controls (n = 13). Platelet arachidonic acid content was significantly reduced in the stroke patients, but in vitro platelet aggregation was similar in the two groups. A low dose of acetosalicylic acid (ASA) (100 mg) suppressed thromboxane production and normalized the platelet arachidonic acid values. The low arachidonic acid in platelets is probably due to its increased consumption, indicating platelet activation in vivo.
