Within our roadmap in this area, given that it is in blacks more often where most of the known abnormal hemoglobins are noted, consider it appropriate to study differentiation of hemoglobins in hospital black population of Lima, reason this preliminary note.

A study has been carried out on the possibility that chronic hypoxia, to which the subject who are born and live at great altitudes are submitted, could produce high values of fetal hemoglobin. Normal new borns and normal adult subjects from Lima (150 meters over sea level), Oroya (3,726 mts.), Morocoha (4,540 mt.) and Ticlio (4,826 mts.), were studied. To measure the amount of fetal hemoglobin two methods were employed: "proportion of alkaline - denaturation" and the "1 minute-residue". At great altitdes the amount of Hb F fall between the normal range at sea level. It was established that there is no difference n the "proportion of alkaline-denaturation" of the Hb, between the subjects (newborns and adults) living at sea level and those living at great altitutdes, or of the few patients with chronic "soroche". It is postulated that the hypoxia of great altitudes does not stimulate the ...

A study has been carried out on the possibility that chronic hypoxia, to which the subject who are born and live at great altitudes are submitted, could produce high values of fetal hemoglobin. Normal new borns and normal adult subjects from Lima (150 meters over sea level), Oroya (3,726 mts.), Morocoha (4,540 mt.) and Ticlio (4,826 mts.), were studied. To measure the amount of fetal hemoglobin two methods were employed: "proportion of alkaline - denaturation" and the "1 minute-residue". At great altitdes the amount of Hb F fall between the normal range at sea level. It was established that there is no difference n the "proportion of alkaline-denaturation" of the Hb, between the subjects (newborns and adults) living at sea level and those living at great altitutdes, or of the few patients with chronic "soroche". It is postulated that the hypoxia of great altitudes does not stimulate the ...