Abstract
The glutathione precursor cysteine is not contained in most total parenteral nutrition (TPN) formulations, and premature infants may not be capable of synthesizing cysteine because of a deficiency of cystathionase. Glutathione depletion may have negative effects on host defense against oxidative damage. Several studies have suggested that glutathione depletion induces ornithine decarboxylase activity and increases in polyamine concentrations. Since an inverse relationship between polyamine and glutathione concentrations has been suggested, the concentrations of both of these compounds may be altered in premature infants receiving TPN. We measured glutathione and polyamine concentrations of the small intestine and colon of prematurely delivered newborn rabbits administered TPN for 7 days after birth with or without added cysteine (75 or 150 mg kg-1 day-1). Maternally reared kits were also studied. Total glutathione concentrations in the gastrointestinal tract were significantly lower in kits administered cysteine-free TPN than in kits receiving cysteine or who were maternally reared. Polyamine concentrations did not differ among groups. Glutathione depletion of the small intestine and colon does occur during cysteine-free parenteral nutrition and may compromise intestinal defense against oxidant damage.
| Original language | English |
|---|---|
| Pages (from-to) | 364-372 |
| Number of pages | 9 |
| Journal | Journal of Pediatric Gastroenterology and Nutrition |
| Volume | 22 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1996 |
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Keywords
- Colon
- Cysteine
- Glutathione
- Intestine
- Parenteral nutrition
- Polyamines
ASJC Scopus subject areas
- Gastroenterology
- Histology
- Medicine (miscellaneous)
- Food Science
- Pediatrics, Perinatology, and Child Health
Cite this
Cysteine supplementation increases glutathione, but not polyamine, concentrations of the small intestine and colon of parenterally fed newborn rabbits. / Pollack, Paul F.; Rivera, Audelio; Rassin, David K.; Nishioka, Kenji.
In: Journal of Pediatric Gastroenterology and Nutrition, Vol. 22, No. 4, 1996, p. 364-372.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Cysteine supplementation increases glutathione, but not polyamine, concentrations of the small intestine and colon of parenterally fed newborn rabbits
AU - Pollack, Paul F.
AU - Rivera, Audelio
AU - Rassin, David K.
AU - Nishioka, Kenji
PY - 1996
Y1 - 1996
N2 - The glutathione precursor cysteine is not contained in most total parenteral nutrition (TPN) formulations, and premature infants may not be capable of synthesizing cysteine because of a deficiency of cystathionase. Glutathione depletion may have negative effects on host defense against oxidative damage. Several studies have suggested that glutathione depletion induces ornithine decarboxylase activity and increases in polyamine concentrations. Since an inverse relationship between polyamine and glutathione concentrations has been suggested, the concentrations of both of these compounds may be altered in premature infants receiving TPN. We measured glutathione and polyamine concentrations of the small intestine and colon of prematurely delivered newborn rabbits administered TPN for 7 days after birth with or without added cysteine (75 or 150 mg kg-1 day-1). Maternally reared kits were also studied. Total glutathione concentrations in the gastrointestinal tract were significantly lower in kits administered cysteine-free TPN than in kits receiving cysteine or who were maternally reared. Polyamine concentrations did not differ among groups. Glutathione depletion of the small intestine and colon does occur during cysteine-free parenteral nutrition and may compromise intestinal defense against oxidant damage.
AB - The glutathione precursor cysteine is not contained in most total parenteral nutrition (TPN) formulations, and premature infants may not be capable of synthesizing cysteine because of a deficiency of cystathionase. Glutathione depletion may have negative effects on host defense against oxidative damage. Several studies have suggested that glutathione depletion induces ornithine decarboxylase activity and increases in polyamine concentrations. Since an inverse relationship between polyamine and glutathione concentrations has been suggested, the concentrations of both of these compounds may be altered in premature infants receiving TPN. We measured glutathione and polyamine concentrations of the small intestine and colon of prematurely delivered newborn rabbits administered TPN for 7 days after birth with or without added cysteine (75 or 150 mg kg-1 day-1). Maternally reared kits were also studied. Total glutathione concentrations in the gastrointestinal tract were significantly lower in kits administered cysteine-free TPN than in kits receiving cysteine or who were maternally reared. Polyamine concentrations did not differ among groups. Glutathione depletion of the small intestine and colon does occur during cysteine-free parenteral nutrition and may compromise intestinal defense against oxidant damage.
KW - Colon
KW - Cysteine
KW - Glutathione
KW - Intestine
KW - Parenteral nutrition
KW - Polyamines
UR - http://www.scopus.com/inward/record.url?scp=0029999033&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029999033&partnerID=8YFLogxK
U2 - 10.1097/00005176-199605000-00005
DO - 10.1097/00005176-199605000-00005
M3 - Article
VL - 22
SP - 364
EP - 372
JO - Journal of Pediatric Gastroenterology and Nutrition
JF - Journal of Pediatric Gastroenterology and Nutrition
SN - 0277-2116
IS - 4
ER -