Document Detail


Use and safety of elevated dosages of vitamin E in infants and children.
MedLine Citation:
PMID:  2507708     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The use of elevated dosages of vitamin E in humans has led to the discovery of vitamin E deficiency syndromes in neurological areas. This evidence comes from careful clinical studies in which elevated vitamin E dosages were applied. In long-term studies it has now been established that retinal and neurological abnormalities are due to vitamin E deficiency and can be ameliorated by therapy with a large amount of the vitamin enterally or parenterally, which can possibly completely prevent the development of clinical manifestations if adequate treatment is given from an early age. It has also become clear that similar neurological and ocular lesions occur in other chronic fat malabsorptive states such as cholestatic liver diseases, cystic fibrosis, and extensive resection of the gut, with respect to an elevated dosage of vitamin E therapy. More recently, several patients with spinocerebellar degeneration from vitamin E deficiency without other evidence of malabsorption have been reported on in whom the progression of the diseases is cessated by the vitamin E therapy. Whether or not the use of elevated dosages of vitamin E should be recommended for certain diseases in premature infants is controversial. Previously, it has been thought that newborn infants, especially premature infants, suffer from vitamin E deficiency, because of their low plasma vitamin E concentrations and high susceptibility of erythrocytes to hydrogen peroxide hemolysis test. Furthermore, tocopherol deficiency has been implicated in four neonatal conditions: anemia of prematurity, retrolental fibroplasia (RLF), bronchopulmonary dysplasia (BPD), and intraventricular hemorrhage (IVH). A hemolytic anemia, associated with thrombocytosis and edema, which is responsive to vitamin E therapy, is not well recognized and occurs in a minority of preterm infants, who were given high amounts of polyunsaturated fatty acids in their formula. However, prophylactic use of an elevated dosage of vitamin E to prevent anemia in the majority of premature infants is controversial. There is no evidence for beneficial effects in BPD. In addition, the prophylactic use of pharmacological dosages of vitamin E for prevention of RLF and IVH has also had conflicting results. In the course of therapy with elevated dosages of vitamin E, administered either orally, intramuscularly, or intravenously, many problems arose in the infants, such as unexpected death, increased frequency of necrotizing enterocolitis (NEC) and sepsis, and the development of unusual symptoms including hepatic injuries.(ABSTRACT TRUNCATED AT 400 WORDS)
Authors:
M Mino
Related Documents :
16672358 - Uterotrophic effects of relaxin related to age and estrogen receptor activation in neon...
2507708 - Use and safety of elevated dosages of vitamin e in infants and children.
14615738 - A trial of vitamin a therapy to facilitate ductal closure in premature infants.
12411838 - Large-body radiation doses following radioiodine therapy.
3360978 - Effectiveness of neonatal transport in new york city in neonates less than 2500 grams--...
7844878 - The clinical utility of the perinatal autopsy.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  International journal for vitamin and nutrition research. Supplement = Internationale Zeitschrift für Vitamin- und Ernährungsforschung. Supplement     Volume:  30     ISSN:  -     ISO Abbreviation:  Int J Vitam Nutr Res Suppl     Publication Date:  1989  
Date Detail:
Created Date:  1989-11-22     Completed Date:  1989-11-22     Revised Date:  2013-03-15    
Medline Journal Info:
Nlm Unique ID:  9211653     Medline TA:  Int J Vitam Nutr Res Suppl     Country:  CANADA    
Other Details:
Languages:  eng     Pagination:  69-80     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Child
Child, Preschool
Humans
Infant
Infant, Newborn
Vitamin E / administration & dosage*,  toxicity
Chemical
Reg. No./Substance:
1406-18-4/Vitamin E

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Use and safety of elevated dosages of vitamin E in adults.
Next Document:  High-dose vitamin D therapy: indications, benefits and hazards.