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The high frequency of genotypes 'null' or 'A' in the 'phase A' vs. 'phase B' of our study confirms the usefulness of neonatal screening in preventing the death of male patients with salt wasting forms. The substantial similarity in the mutational spectrum of classical forms found in our study, based on the detection of all the classical patients of a specific area, leads us to believe that the distribution of mutations is due to the inherent characteristics of the gene locus, and that regional effects play a minor role. Prompt neonatal genotyping can be of valuable diagnostic assistance in neonatal screening for the confirmation of the diagnosis in newborns with moderately elevated 17 hydroxyprogesterone levels.

SUMMIARY Capillary blood samples from 42 930 infants born in the Italian region of EmiliaRomagna were collected for 17-hydroxyprogesterone radioimmunoassays on days 2, 3, 4, 5, 6, and 7, or

In HPN patients, the peroxidative stress due to lipid emulsions rich in PUFAs is counteracted primarily by alpha-tocopherol. The dosages of alpha-tocopherol, zinc, copper, and manganese recommended by the American Medical Association appear sufficient to sustain SOD activity but inadequate to maintain alpha-tocopherol nutritional status. HPN formulations should be supplemented with selenium.