Acute psychotic symptoms in HIV-1 infected patients are associated with increased levels of kynurenic acid in cerebrospinal fluid
2007 (English)In: Brain, behavior, and immunity, ISSN 0889-1591, Vol. 21, no 1, 86-91 p.Article in journal (Refereed) Published
Human immunodeficiency virus type 1 (HIV-1) infection is associated with psychiatric complications including cognitive impairment, affective disorders, and psychosis. Previous studies have revealed a disturbed kynurenine metabolism in these patients leading to increased levels of neuroactive compounds acting at glutamatergic neurotransmission. Kynurenic acid (KYNA), one of these metabolites is a glutamate-receptor antagonist, preferentially blocking the glycine site of the N-methyl-D-aspartate (NNIDA) receptor. Increased levels of brain KYNA have been suggested to induce a NNIDA receptor hypofunction that is associated with psychotic symptoms. In the present study, we analyze the concentration of KYNA in the cerebrospinal fluid (CSF) from HIV-1 infected patients (n = 22), including HIV-1 infected patients with psychotic symptoms (n = 8) and HIV-1 infected patients without psychiatric symptoms (n = 14). We found that HIV-1 infected patients had significantly higher median concentration of CSF KYNA (3.02 nM) compared to healthy controls (1.17 nM). Furthermore, CSF KYNA levels were significantly elevated in HIV-1 infected patients with psychotic symptoms (4.54 nM) compared to patients with HIV-1 without psychiatric symptoms (2.28 nNI). Present results indicate that increased levels of CSF KYNA may be associated with development of psychotic symptoms in HIV-1 infected patients. (c) 2006 Elsevier Inc. All rights reserved.
Place, publisher, year, edition, pages
2007. Vol. 21, no 1, 86-91 p.
kynurenic acid, cerebrospinal fluid, HIV-1 infection, psychos, schizophrenia
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-45970DOI: 10.1016/j.bbi.2006.02.005OAI: oai:DiVA.org:liu-45970DiVA: diva2:266866