|dc.description.abstract||ABSTRACT In the course of haematological and biological investigations
among Aymara and Quechua populations in Bolivia, an anthropological study
of the erythrocytary respiratory function was carried out on the two groups at
two altitudes: 3,600 m and 450 m.
A difference in the intensity of the biological variations of the two populations is observed at high altitude.
In the Quechuas, as in any lowland native, the adaptative phenomena are
totally and quickly reversible.
In the Aymaras, we detected the existence of more marked haematological
and biochemical characters: moderate polycythemia, hyperhaemoglobinemia,
microcytosis, metabolical hyperactivity with accumulation of 2-3 di-phospho.
glycerate and ATP, and methaemoglobinemia with a drop in the activity ofthe
methaemoglobin reductases. The Aymaras preserve Sorne of those characters
(methaemoglobinemia excepted) when they settle in lowlands.||es_ES