Milica Bajčetić1, Biljana Otašević2, Niveska Božinović Prekajski2, Snežana Spasić3, Ivan Spasojević4. 1. Department of Pharmacology, Clinical Pharmacology and Toxicology, School of Medicine, University of Belgrade, Serbia Clinical Pharmacology Unit, University Children's Hospital, Belgrade, Serbia mbajcetic@doctor.com. 2. Institute for Neonatology, Belgrade, Serbia. 3. Department of Chemistry, IChTM, University of Belgrade, Serbia. 4. Institute for Multidisciplinary Research, University of Belgrade, Belgrade, Serbia.
Abstract
BACKGROUND:Vitamin E is routinely supplemented to preterm babies, including those with neonatal sepsis. Our aim was to examine the effects of neonatal sepsis and vitamin E on antioxidative system (AOS) in the blood. METHODS: A prospective, randomized, open label study involved 65 preterm neonates (control/sepsis - 34/31), which were divided into two subgroups - non-supplemented and supplemented with vitamin E (25 IU/day for 60 days). The activities of superoxide dismutase, catalase (CAT), glutathione peroxidase (GPx), and glutathione reductase (GR) were determined in erythrocytes at days 0, 30, and 60, following sepsis diagnosis. RESULTS: There was no difference in the activity of AOS between controls and neonates with ongoing sepsis. At 60 days, septic neonates showed higher CAT activity compared to controls (P = 0.027), and lower GPx activity compared to 0 days (P = 0.022). The later was mitigated by vitamin E, which on the other hand provoked lower GPx activity at 30 days, compared to untreated septic neonates (P = 0.014). In addition, vitamin E suppressed GR activity in septic neonates (P = 0.025 and P = 0.017 at 30 and 60 days). Finally, vitamin E supplementation in control neonates provoked a significant increase of GPx activity (P = 0.015 at 60 days). CONCLUSIONS: The absence of altered redox settings in the blood of neonates during sepsis episode, and vitamin E-provoked decrease in the activity of some components of AOS, suggest that the supplementation of vitamin E in these patients might not be rational.
RCT Entities:
BACKGROUND:Vitamin E is routinely supplemented to preterm babies, including those with neonatal sepsis. Our aim was to examine the effects of neonatal sepsis and vitamin E on antioxidative system (AOS) in the blood. METHODS: A prospective, randomized, open label study involved 65 preterm neonates (control/sepsis - 34/31), which were divided into two subgroups - non-supplemented and supplemented with vitamin E (25 IU/day for 60 days). The activities of superoxide dismutase, catalase (CAT), glutathione peroxidase (GPx), and glutathione reductase (GR) were determined in erythrocytes at days 0, 30, and 60, following sepsis diagnosis. RESULTS: There was no difference in the activity of AOS between controls and neonates with ongoing sepsis. At 60 days, septic neonates showed higher CAT activity compared to controls (P = 0.027), and lower GPx activity compared to 0 days (P = 0.022). The later was mitigated by vitamin E, which on the other hand provoked lower GPx activity at 30 days, compared to untreated septic neonates (P = 0.014). In addition, vitamin E suppressed GR activity in septic neonates (P = 0.025 and P = 0.017 at 30 and 60 days). Finally, vitamin E supplementation in control neonates provoked a significant increase of GPx activity (P = 0.015 at 60 days). CONCLUSIONS: The absence of altered redox settings in the blood of neonates during sepsis episode, and vitamin E-provoked decrease in the activity of some components of AOS, suggest that the supplementation of vitamin E in these patients might not be rational.
Authors: Rían Hayes; Jack Hartnett; Gergana Semova; Cian Murray; Katherine Murphy; Leah Carroll; Helena Plapp; Louise Hession; Jonathan O'Toole; Danielle McCollum; Edna Roche; Elinor Jenkins; David Mockler; Tim Hurley; Matthew McGovern; John Allen; Judith Meehan; Frans B Plötz; Tobias Strunk; Willem P de Boode; Richard Polin; James L Wynn; Marina Degtyareva; Helmut Küster; Jan Janota; Eric Giannoni; Luregn J Schlapbach; Fleur M Keij; Irwin K M Reiss; Joseph Bliss; Joyce M Koenig; Mark A Turner; Christopher Gale; Eleanor J Molloy Journal: Pediatr Res Date: 2021-11-06 Impact factor: 3.756
Authors: Cían J Henry; Gergana Semova; Ellen Barnes; Isabel Cotter; Tara Devers; Aisyah Rafaee; Andreea Slavescu; Niamh O Cathain; Danielle McCollum; Edna Roche; David Mockler; John Allen; Judith Meehan; Claus Klingenberg; Jos M Latour; Agnes van den Hoogen; Tobias Strunk; Eric Giannoni; Luregn J Schlapbach; Marina Degtyareva; Frans B Plötz; Willem P de Boode; Lars Naver; James L Wynn; Helmut Küster; Jan Janota; Fleur M Keij; Irwin K M Reiss; Joseph M Bliss; Richard Polin; Joyce M Koenig; Mark A Turner; Christopher Gale; Eleanor J Molloy Journal: Pediatr Res Date: 2022-01-07 Impact factor: 3.953