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Abstract

Proton MR spectroscopy of brain abnormalities in neonates born to HIV-positive mothers.

A Cortey, J G Jarvik, R E Lenkinski, R I Grossman, I Frank and M Delivoria-Papadopoulos
American Journal of Neuroradiology November 1994, 15 (10) 1853-1859;
A Cortey
Department of Physiology, University of Pennsylvania School of Medicine, Philadelphia.
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J G Jarvik
Department of Physiology, University of Pennsylvania School of Medicine, Philadelphia.
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R E Lenkinski
Department of Physiology, University of Pennsylvania School of Medicine, Philadelphia.
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R I Grossman
Department of Physiology, University of Pennsylvania School of Medicine, Philadelphia.
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I Frank
Department of Physiology, University of Pennsylvania School of Medicine, Philadelphia.
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M Delivoria-Papadopoulos
Department of Physiology, University of Pennsylvania School of Medicine, Philadelphia.
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Abstract

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.

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American Journal of Neuroradiology
Vol. 15, Issue 10
1 Nov 1994
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Proton MR spectroscopy of brain abnormalities in neonates born to HIV-positive mothers.
A Cortey, J G Jarvik, R E Lenkinski, R I Grossman, I Frank, M Delivoria-Papadopoulos
American Journal of Neuroradiology Nov 1994, 15 (10) 1853-1859;

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Proton MR spectroscopy of brain abnormalities in neonates born to HIV-positive mothers.
A Cortey, J G Jarvik, R E Lenkinski, R I Grossman, I Frank, M Delivoria-Papadopoulos
American Journal of Neuroradiology Nov 1994, 15 (10) 1853-1859;
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