Haemoglobinopathy is a kind of genetic defect that results in abnormal structure of one of the globin chains of thehemoglobinmolecule. Hemoglobinopathies are inherited single-gene disorders; in most cases, they are inherited as autosomal co-dominant traits. Common hemoglobinopathies include sickle-cell disease. It is estimated that 7% of world's population (420 million) are carriers, with 60% of total and 70% pathological being in Africa.
Haemoglobin Functions :Transport of oxygen from the lungs to the tissues. This is due to the peculiar cooperation of the globin chains that allows the molecule to take in more oxygen where there is increased oxygen and to release oxygen in low concentration of oxygen.Transport of carbondioxide: from the tissue to the lungs.the end product of tissue metabolism is acidic which increases the hydrogen ion in solution. the hydrogen ion combines with bicarbonates to produce.
Symptoms and signs: Blood tests (Findings).
Statistics: In September 1992, 128 children were being treated by a paediatrician for sickle-cell disease. Two children had parents born in the Netherlands, but all children were of other ethnic origins, mainly from Surinam, the Dutch Antilles, Turkey and Africa; 50 children were born in the Netherlands. 31 children were under treatment for thalassaemia major, none of them of original Dutch descent; the most frequent ethnic backgrounds were Turkey and Morocco; 20 children were born in the Netherlands.