Assessment of theRatio of the D- and L- Form of Aspartic Acid in Tissue ofthe Achilles Tendon as an Indicator of Age

Authors: A. Pilin;  R. Čabala;  F. Pudil;  V. Bencko
Authors‘ workplace: Ústav soudního lékařství a toxikologie 1. LF UK a VFN Praha Katedra analytické chemie PF UK, Praha Fakulta potravinářské a biochemicé technologie VŠCHT, Praha Ústav hygieny a epidemiologie 1. LF UK, Praha
Published in: Čes.-slov. Patol., , 2001, No. 2, p. 27-29


The presence of the D- form of aspartic acid was detected in collagen of dentin and the interver-tebral disk before and assessment of its racemization coefficient was used for assessment of theage of subjects. Another tissue formed almost solely by collagen type I are tendons. Tendon tissuewas not investigated so far with regard to the racemization coefficient and therefore the authorsassessed the D-form of aspartic acid in the Achilles tendon. They used lyophilized tendon excisi-ons which were hydrolyzed. Amino acids in the hydrolysate were derived to N-TFA isopropylesters which were assessed by gas chromatography on a chiral capillary column. In all samplesthe D-form of aspartic acid was detected. The values of the racemization coefficient suggest thepossible use of thus processed tissue with certain limitations.

Key words:
assessment of age - Achilles tendon - aspartic acid - racemization

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Anatomical pathology Forensic medical examiner Toxicology
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