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American Journal of Clinical Nutrition, Vol 22, 1652-1659, Copyright © 1969 by The American Society for Clinical Nutrition, Inc.

Serum Free Amino Acid Pattern in a Babinga Pygmy Adult Population

ANNA MARIA PAOLUCCI DOTT.1, M. ANTONIETTA SPADONI DOTT.1, VINCENZO PENNETTI DOTT.1, and LUIGI L. CAVALLI-SFORZA DOTT.1

1 From the Istituto Nazionale della Nutrizione, Laboratorio di Biochimica, Città Universitaria, Roma; Istituto di Clinica Medica I, Policlinico, Roma; Istituto di Genetica, Università di Pavia

The serum amino acid pattern and the ratio of essential to nonessential amino acids (E-N ratio) have been determined, by ion-exchange chromatography in a group of Babinga pygmies, in order to evaluate their protein-nutrition status. The values obtained have been compared with those from well-nourished Italian subjects.

The essential amino acids were in the range of normality, with the marked exception of a high phenylalanine level. The nonessential amino acids were increased, particularly alanine, glycine, serine, and glutamic plus aspartic acid, whereas the agr-NH2-n-butyric acid was decreased.

The E-N ratio was 0.33 in the pygmies and 0.44 in the Italians.

On the basis of these results it was possible to conclude that the pygmies examined were suffering from a mild condition of protein deficiency.

The main peculiarity encountered in the amino acid pattern from the pygmies was a relatively high phenylalanine level. Various possibilities have been examined in the attempt to explain the meaning of this finding.






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