Post-surgical changes in brain metabolism detected by magnetic resonance spectroscopy in normal pressure hydrocephalus: results of a pilot study.

María del Mar Matarín, Roser Pueyo, María Antonia Poca, Carles Falcón, María Mataró, Núria Bargalló, Juan Sahuquillo, Carme Junqué

Journal: Journal of neurology, neurosurgery, and psychiatry 2007;78(7):760-3

PMID: 17299021

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Abstract

BACKGROUND

Adult normal pressure hydrocephalus (NPH) is one of the few potentially treatable causes of dementia. Some morphological and functional abnormalities attributed to hydrocephalus improve following treatment.

OBJECTIVES

We focused on analysis of changes in cerebral metabolites using proton magnetic resonance spectroscopy (1H-MRS) after NPH treatment, and its clinical and cognitive correlation.

METHODS

1H-MRS, neuropsychological and clinical status examinations were performed before and 6 months after shunting in 12 adults with idiopathic NPH. We obtained N-acetyl-aspartate (NAA), choline (Cho), myoinositol (MI) and creatine (Cr) values.

RESULTS

After surgery, NAA/Cr was significantly increased. Moreover, NAA/Cr values were related to cognitive deterioration.

CONCLUSION

MRS could be a marker of neuronal dysfunction in NPH.

Address: Department of Psychiatry and Clinical Psychobiology, University of Barcelona, Spain.

DOI: 10.1136/jnnp.2006.088450

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MeSH Terms: Aged, Biomarkers, Brain, Cerebrospinal Fluid Shunts, Cognition Disorders, Female, Humans, Hydrocephalus, Normal Pressure, Magnetic Resonance Spectroscopy, Male, Neuropsychological Tests, Pilot Projects, Protons