[Treatment of Argentine hemorrhagic fever with convalescent's plasma. 4433 cases].

During the 23 consecutive annual epidemics of Argentine haemorrhagic fever observed from 1959 to 1983, a group of 4,433 patients were treated at Junin (Argentina) with convalescent's plasma; the overall mortality rate was 3.29%. In 1958, before convalescent's plasma was used, the mortality rate in 448 patients who received the conventional treatment was 42.

Biological aspects of Amazonian fishes--VI. Hemoglobins and whole blood properties of Semaprochilodus species (Prochilodontidae) at two phases of migration.

Electrophoretic patterns of hemoglobins, red blood cell phosphates, Bohr effect of blood and stripped hemoglobin, ATP and GTP modulation of Hb-O2 affinity of two species belonging to the genus Semaprochilodus (S. insignis and S. taeniurus--jaraquis), captured at two different locations in Rio Negro, near Manaus (Amazonas), are described.

Electrophoretic patterns of hemoglobin and oxygen binding properties of blood of anostomidae fishes from Parana-Pardo-Grande hydrographic basin (São Paulo State, Brazil).

The electrophoretic patterns of hemoglobin (Hb) and the functional properties of blood of seven migratory fish species, in two different kinds of habitat during both the rainy and dry seasons, were studied. All species showed multiple hemoglobins and very similar electrophoretic patterns except for Schizodon nasutus, which showed two cathodal components. The functional properties of blood reflect those electrophoretic patterns, since all species showed very little or no Bohr effect during each situation studied.

Hemoglobin, hematology, intraerythrocytic phosphates and whole blood Bohr effect from lotic and lentic Hypostomus regani populations (São Paulo-Brasil).

Hemoglobin electrophoretic pattern, whole blood Bohr effect, intraerythrocytic phosphates and some hematological parameters were determined and compared between lotic and lentic Hypostomus regani specimens. The electrophoretic patterns of specimens from both kinds of environments showed four anodic fractions. The relative concentration of the fraction I (the most anodal) is significantly different between specimens from lotic and lentic ambients.

Biological aspects of amazonian fishes I. Red blood cell phosphates of schooling fishes (genus Semaprochilodus: Prochilodontidae).

Red blood cell soluble phosphates from Semaprochilodus taeniurus, S. insignis and a possible hybrid jaraqui-açu, from Amazon basin, were studied by column chromatography. The Semaprochilodus school and the jaraqui-açu shows an intermediate percentage of total phosphorus content as GTP but not as ATP.

[Medical treatment of the threat syndrome with heparin. Long-term prospective study].

A 19-year study of 119 patients stricken with a threat syndrome and treated with heparin is presented. The average observation period is 10.15 years.

Adaptative features of ectothermic enzymes. III--Studies on phosphoglucose isomerase (PGI) from five species of tropical fishes of the superorder Ostariophysi.

1. The electrokinetic and thermostability properties of phosphoglucose isomerase (PGI) in five species of tropical fish (Ostariophysi)-Leporinus friderici, L. silverstrii, Schizodon nasuttus, Hypostomus sp and Pimelodus maculatus--have been studied in order to study the adaptative nature of protein heterogeneity found in ectotherms.