home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Software Vault: The Diamond Collection
/
The Diamond Collection (Software Vault)(Digital Impact).ISO
/
cdr16
/
med9505d.zip
/
M9550796.TXT
< prev
next >
Wrap
Text File
|
1995-03-25
|
3KB
|
50 lines
Document 0796
DOCN M9550796
TI Proton MR spectroscopy of brain abnormalities in neonates born to
HIV-positive mothers.
DT 9505
AU Cortey A; Jarvik JG; Lenkinski RE; Grossman RI; Frank I;
Delivoria-Papadopoulos M; Department of Physiology, University of
Pennsylvania School of; Medicine, Philadelphia.
SO AJNR Am J Neuroradiol. 1994 Nov;15(10):1853-9. Unique Identifier :
AIDSLINE MED/95168128
AB PURPOSE: To examine the sensitivity of proton MR spectroscopy for
detecting early central nervous system abnormalities in neonates born to
human immunodeficiency virus (HIV)-positive mothers. METHODS: Asleep,
unsedated, and continuously monitored by electrocardiography, 10
newborns, 5 with HIV-positive and 5 with HIV-negative mothers, were
studied within the first 10 days of life in a 1.5-T scanner. After T1-
and T2-weighted images were obtained, proton spectra were performed
using voxels of interest (3.4 cm3) in the deep parietooccipital white
matter. Peaks were identified as N-acetyl-aspartate (2.0 ppm), creatine
and phosphocreatine (3.0 ppm), choline (3.2 ppm), and inositol (3.5
ppm). Peak areas were used to calculate metabolic ratios:
N-acetyl-aspartate to creatine, inositol to creatine, and creatine to
choline. RESULTS: All newborns of HIV-positive mothers had abnormal
proton spectra compared with control infants; a nonspecific amino acid
peak in the 2.1- to 2.6-ppm area was elevated, broad, and overlapping
the N-acetyl-aspartate peak in all the HIV-exposed newborns and in only
1 of the 5 control newborns. The choline-to-creatine ratio was higher in
HIV-exposed newborns at 2.3 +/- 0.4 (normal term, 0.9 +/- 0.3), as was
the N-acetyl-aspartate-to-creatine ratio at 2.6 +/- 0.9 (for control
subjects, 1.2 +/- 0.4). MR images from these brain regions were all
considered normal. Because acquired immunodeficiency syndrome develops
in only a small fraction of neonates born to HIV-seropositive mothers,
the above spectral abnormalities found in all our subjects may result
from indirect effects of HIV, such as intrauterine growth retardation.
CONCLUSIONS: These findings indicate that proton MR spectroscopy might
play an important role in detecting early central nervous system
complications in newborns of HIV-seropositive mothers.
DE Aspartic Acid/ANALOGS & DERIVATIVES/METABOLISM AIDS Dementia
Complex/*DIAGNOSIS Choline/METABOLISM Diagnosis, Differential Disease
Transmission, Vertical Energy Metabolism/*PHYSIOLOGY Female Fetal
Growth Retardation/DIAGNOSIS Human HIV
Seropositivity/*DIAGNOSIS/TRANSMISSION Infant, Newborn
Inositol/METABOLISM Magnetic Resonance Imaging/*METHODS Male Nuclear
Magnetic Resonance/*METHODS Occipital Lobe/PATHOLOGY Parietal
Lobe/PATHOLOGY Phosphocreatine/METABOLISM JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).