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Biomedical subjects

M Losada

Publications and source records attributed to M Losada.

At least 109 records · Page 6Linked to original sources
PubMedDate not supplied

Malondialdehyde serum concentration in type 1 diabetic with and without retinopathy.

Lipid peroxides are thought to be formed by free radicals and have been implicated in the pathogenesis of diabetes complications. A convenient and sensitive method for estimation of lipid peroxide concentration is the quantitative estimation of their metabolic end-product malondialdehyde (MDA) expressed in mmol/L using the thiobarbituric acid test (TBA-test). We have measured the serum concentrations of MDA in 60 well controlled type I diabetic patients (28 without retinopathy and 32 with retinopathy) and 13 age-matched healthy subjects. Patients with retinopathy showed significantly increased MDA level (2.65+/-1.00) compared to diabetics without retinopathy (1.80+/-0.81) and healthy controls (1.47+/-0.45). The serum levels of MDA correlated best with glycosylated haemoglobin (r=0.28), serum triglyceride concentration (r=0.29) and serum cholesterol concentration. (r=0.47). Increased lipid peroxides suggesting increased free radical activity is associated with retinopathy and this may have pathogenetic implications.

Adult↗
PubMedDate not supplied

Bilateral striatal lesions in childhood.

From 1983 to 1991, 13 patients were identified with a clinical radiologic association characterized by acute or persistent neurologic dysfunction and bilateral lesions in the basal ganglia region demonstrated by ultrasound, computed tomography, or magnetic resonance imaging. Initial clinical manifestations of this group of patients were characterized by extrapyramidal signs (i.e., dystonia 9, hypotonia 2, athetosis 1, rigidity 1), altered state of consciousness in 5, and seizures in 3. The outcomes of most of these patients were poor: 10 had motor sequelae, 9 cognitive impairment, and 4 died. The outcomes of 2 patients, however, were much better than what was expected from the initial presentation. Based on current and previous reports, the diagnostic approach and classification of patients with neurologic dysfunction and bilateral striatal lesions are presented.

Basal Ganglia Diseases↗