Brain lactate and N-acetylaspartate in pediatric AIDS encephalopathy.

نویسندگان

  • S G Pavlakis
  • D Lu
  • Y Frank
  • A Wiznia
  • D Eidelberg
  • T Barnett
  • R A Hyman
چکیده

Two children with acquired immunodeficiency syndrome (AIDS) and progressive encephalopathy underwent MR spectroscopy before and after antiretroviral therapy. Initial MR spectroscopy of the basal ganglia region showed decreased N-acetylaspartate (NAA)/creatine (Cr) and a lactate peak. After therapy, there was improvement in NAA/Cr and an absence of the abnormal lactate peak. We suggest that decreased NAA/Cr in AIDS is reversible, that brain lactate might correlate with inflammation, and that MR spectroscopy can be useful in treatment trials.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Prognostic value of 1H-MRS in neonatal encephalopathy.

The aim of this study was to determine the prognostic value of proton magnetic resonance spectroscopy in neonatal encephalopathy. Studies were carried out in 11 consecutive term newborns with encephalopathy probably caused by hypoxic-ischemic injury. The clinical evaluation included pregnancy data, labor conditions, encephalopathy grade, presence of seizures, and necessity of antiepileptic drug...

متن کامل

Hyperammonemic encephalopathy: time course of MRI diffusion changes.

A 55-year-old man with cirrhosis presented with hyperammonemic encephalopathy, subsequently fatal (plasma ammonia level 410 M/L). Three-Tesla MRI initially showed restricted diffusion (figure 1A) in the cerebral cortex, suggesting poor prognosis,1 thalami, and striatum. Apparent diffusion coefficient pseudonormalized 8 days after admission (figure 1B), comparable to the evolution of hypoxic enc...

متن کامل

Proton MR spectroscopy of Wernicke encephalopathy.

Two patients with acute thiamine deficiency were examined with thalamic single-voxel proton MR spectroscopy. T2-weighted images exhibited increased signal intensity. N-acetylaspartate (NAA)/creatine (Cr) ratios were low without detectable lactate. Owing to substantially decreased choline (Cho) T2, the Cho/Cr ratio was not decreased. After thiamine therapy, the NAA/Cr ratio increased, parallelin...

متن کامل

Brain metabolite levels assessed by lactate-edited MR spectroscopy in premature neonates with and without pentobarbital sedation.

BACKGROUND AND PURPOSE Pentobarbital is known to affect cerebral metabolism; pentobarbital sedation is, however, frequently used for MR imaging and MR spectroscopy, especially in children. Accurate assessment of the brain metabolite levels is important, particularly in neonates with suspected brain injury. We investigated whether pentobarbital sedation has any effect on the ratios of spectral m...

متن کامل

MR spectroscopic findings in a case of Alpers-Huttenlocher syndrome.

Alpers-Huttenlocher syndrome, considered a mitochondrial disease, combines encephalopathy and liver failure. An 11-year-old boy with Alpers-Huttenlocher syndrome underwent conventional MR imaging, diffusion-weighted imaging, and proton MR spectroscopy. Diffusion-weighted imaging showed cytotoxic edema interpreted as acute-phase encephalopathy. MR spectroscopy revealed a lactate peak in the cort...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • AJNR. American journal of neuroradiology

دوره 19 2  شماره 

صفحات  -

تاریخ انتشار 1998