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Biomedical subjects

A Mautone

Publications and source records attributed to A Mautone.

At least 55 records · Page 3Linked to original sources

Delayed decrease in serum ferritin in polytransfused children with thalassemia major after continuous subcutaneous infusions of desferrioxamine.

A longitudinal study has been conducted on serum ferritin concentrations in children with thalassemia major treated with desferrioxamine (DFO), both intramuscularly and by continuous subcutaneous infusion, in order to evaluate the time interval after which iron chelation becomes effective. In a first group of 19 children, treated intramuscularly with DFO at a dose of 20 mg/kg for 20 days a month, ferritin levels were followed for 739 days and a progressive increase with a significant linear correlation with time was seen. The daily increase was calculated to be 8.53 +/- 1.95 ng/ml. In the second group of 12 children treated with DFO by continuous subcutaneous infusion (greater than or equal to 20 mg/kg/day for 6 days a week), the increase in ferritin was markedly lower, the mean daily value being 4.77 +/- 3.30 ng/ml. Only after the first 360 days of treatment did the serum ferritin decrease, by 1.95 +/- 3.32 ng/ml/day, in spite of a mean daily iron contribution from blood transfusions of 7.09 +/- 2.69 mg/day. These changes in serum ferritin led us to conclude that one can only expect to obtain a decrease in the body's iron overload after more than a year of treatment with subcutaneous DFO.

Blood Transfusion↗

Post-natal development of factor II (pre-prothrombin and prothrombin) in man.

Postnatal development of factor II molecule has been evaluated by three different methods in infants and children from 15 days to 7 years of age. The immunochemical determination of factor II showed that the plasma levels of this factor reached the lowest adult values between 4-7 months of age and rose slowly for all the first year; after this age the plasma concentration was steady. The adult range was reached from 15 to 120 days of age when the factor II was evaluated by the method of Owren and Aas (19) and by staphylocoagulase reagent.

Age Factors↗