[Detection of antibodies against ovum antigens in Schistosoma mansoni bilharziasis]. / Mise en évidence des anticorps dirigés contre les antigènes ovulaires au cours de la bilharziose à Schistosoma mansoni.

Fifty-five sera from bilharziasis patients from West Indies and thirty-five control sera (from normal subjects and patients with hydatidosis and fascioliasis) were examined by ELISA for antibodies reacting with S. mansoni soluble egg antigen MSA1 . MSA1 antigen was prepared according to Pelley and coupled to isothiocyanate substituted plastic discs. Sensitivity and specificity of reaction were good. Moreover, in experimental infection in mice, sera of mice cured with praziquantel became negative. The sera were also examined by a whole egg antigen in counter immunoelectrophoresis. The results of the two different techniques correspond well although ELISA using purified antigen prove to be more specific and sensitive.

Caso clinico-patologico. Sindrome 13q (Deleccion intersticial del cromosoma 13). / Clinico-pathological case.13q syndrome (Interstitial deletion of chromosome 13)

Se presenta un caso de deleccion intersticial del brazo largo del cromosoma 13, asociado a retinoblastoma unilateral y manchas de Brushfeld en el iris de ambos ojos. La nina presento retraso del desarrollo psicomotor, trigonocefalia, microgmatismo, pabellones auriculares promientes y dismorfias sutiles de manos y pies. El estudio histopatologico revelo un retinoblastoma multifocal, moderadamente bien diferenciado e hipoplasia del iris periferico