Document Detail


The possible role of magnesium in protection of premature infants from neurological syndromes and visual impairments and a review of survival of magnesium-exposed premature infants.
MedLine Citation:
PMID:  10488476     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The survival rate of very preterm, low birth weight infants (weighing less than 1500 g) is 85 per cent in the USA and is ever increasing, while 42 to 75 per cent of extremely premature infants (weighing 751-1000 g) survive. Of great concern is the lack of consistent decrease in neurological syndromes and associated visual impairments. Because of short gestations, these infants have not had time to accrue up to 80 per cent of magnesium normally present at term. These very preterm infants are at highest risk for cerebral hypoxia/ischemia (H/I), intracranial hemorrhage (ICH), periventricular leukomalacia (PVL) or cystic PVL (CPVL), and possible sequelae, cerebral palsy (CP) and mental retardation (MR). These syndromes are associated with damage to optic structures and the visual pathways which traverse the brain. Visual defects are common in surviving preterm infants. Increased levels of harmful neurochemical mediators that have been reported in these conditions include oxygen free radicals, excitatory amino acids, tumor necrosis factor-alpha (TNF-a), and thromboxane A2 (TXA2) which are aggravated in magnesium deficiency and may be ameliorated by magnesium. We review the published data concerning the effects of prenatal magnesium supplementation on ICH, CPVL, CP and MR and available reports concerning survival. Further considerations on the safety and efficacy of magnesium sulphate administration given prenatally to the preterm neonate await the outcome of three trials that are continuing for more than a year on three continents.
Authors:
J L Caddell; L J Graziani; T E Wiswell; H C Hsieh; H C Mansmann
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Magnesium research : official organ of the International Society for the Development of Research on Magnesium     Volume:  12     ISSN:  0953-1424     ISO Abbreviation:  Magnes Res     Publication Date:  1999 Sep 
Date Detail:
Created Date:  1999-10-26     Completed Date:  1999-10-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8900948     Medline TA:  Magnes Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  201-16     Citation Subset:  IM    
Affiliation:
Department of Pediatrics, Thomas Jefferson University, Philadelphia, PA 19107-5083, USA.
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MeSH Terms
Descriptor/Qualifier:
Humans
Infant, Newborn
Infant, Premature*
Magnesium* / pharmacology,  therapeutic use
Nervous System Diseases / prevention & control*
Syndrome
Visual Pathways* / drug effects,  pathology,  physiopathology
Chemical
Reg. No./Substance:
7439-95-4/Magnesium

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


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