Quinolinic acid in tumors, hemorrhage and bacterial infections of the central nervous system in children

Melvyn P. Heyes, Kuniaki Saito, Sheldon Milstien, Steven J. Schiff

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

A potential mechanism that may contribute to neurological deficits following central nervous system infection in children was investigated. Quinolinic acid (QUIN) is a neurotoxic metabolite of the kynurenine pathway that accumulates within the central nervous system following immune activation. The present study determined whether the levels of QUIN are increased in the cerebrospinal fluid of children with infections of the CNS, hydrocephalus, tumors or hemorrhage. Extremely high QUIN concentrations were found in patients with bacterial infections or the CNS, despite treatment with antimicrobial agents. CSF QUIN levels were also elevated to a lesser degree in patients with hydrocephalus or tumors. CSF l-kynurenine levels increased in parallel to the accumulations in QUIN, which is consistent with increased activity of the first enzyme of the kynurenine pathway, indoleamine-2,3-dioxygenase. The CSF levels of neopterin, a marker of immune and macrophage activation, were also increase in patients with infections. The cytokines tumor necrosis factor-α and interleukin-6 were also detected in some patients' samples, and were highest in patients with infection. These results suggest that QUIN is a sensitive marker of the presence of immune activation within the CNS. Further studies of QUIN as a potential contributor to neurologic dysfunction and neurodegeneration in children with CNS inflammation are warranted.

Original languageEnglish
Pages (from-to)112-118
Number of pages7
JournalJournal of the Neurological Sciences
Volume133
Issue number1-2
DOIs
Publication statusPublished - 01-01-1995
Externally publishedYes

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Central Nervous System Bacterial Infections
Quinolinic Acid
Hemorrhage
Kynurenine
Neoplasms
Hydrocephalus
Infection
Biomarkers
Indoleamine-Pyrrole 2,3,-Dioxygenase
Neopterin
Central Nervous System Infections
Macrophage Activation
Neurologic Manifestations
Anti-Infective Agents
Bacterial Infections
Cerebrospinal Fluid
Interleukin-6
Central Nervous System
Tumor Necrosis Factor-alpha
Cytokines

All Science Journal Classification (ASJC) codes

  • Clinical Neurology
  • Neurology
  • Ageing
  • Surgery
  • Developmental Neuroscience
  • Neuroscience(all)

Cite this

Heyes, Melvyn P. ; Saito, Kuniaki ; Milstien, Sheldon ; Schiff, Steven J. / Quinolinic acid in tumors, hemorrhage and bacterial infections of the central nervous system in children. In: Journal of the Neurological Sciences. 1995 ; Vol. 133, No. 1-2. pp. 112-118.
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Quinolinic acid in tumors, hemorrhage and bacterial infections of the central nervous system in children. / Heyes, Melvyn P.; Saito, Kuniaki; Milstien, Sheldon; Schiff, Steven J.

In: Journal of the Neurological Sciences, Vol. 133, No. 1-2, 01.01.1995, p. 112-118.

Research output: Contribution to journalArticle

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