Cyst(e)ine measurements during total parenteral nutrition

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Using a method that measures plasma protein-bound 1/2 cystine, plasma free cyst(e)ine, and urine free cyst(e)ine, we have observed that infants receiving total parenteral nutrition supplemented with cysteine-HCl have significantly higher plasma and urine free cyst(e)ine concentrations (11.3 ± 3.4 μm/dl and 47.2 ± 24.0 μm/dl x̄ ± SD) than when 1/2 cystine concentrations are measured by automated amino acid analysis (7.4 ± 2.0 μm/dl, plasma and 25.0 ± 7.0 μm/dl, urine). These data suggest that both the sulfhydryl and disulfide form of cyst(e)ine must be measured to assess the effect of cysteine-HCl supplemented total parenteral nutrition.

Original languageEnglish (US)
Pages (from-to)188-191
Number of pages4
JournalAmerican Journal of Clinical Nutrition
Volume37
Issue number2
StatePublished - 1983

Fingerprint

Total Parenteral Nutrition
total parenteral nutrition
Cysts
urine
cystine
Cystine
cysteine
Urine
Cysteine
sulfides
blood proteins
Disulfides
Blood Proteins
amino acids
Amino Acids
methodology

ASJC Scopus subject areas

  • Food Science
  • Medicine (miscellaneous)

Cite this

Cyst(e)ine measurements during total parenteral nutrition. / Malloy, Michael; Rassin, D. K.; Richardson, Carol.

In: American Journal of Clinical Nutrition, Vol. 37, No. 2, 1983, p. 188-191.

Research output: Contribution to journalArticle

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