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      Immune activation and neuropsychiatric symptoms in HIV infection.

      The Journal of neuropsychiatry and clinical neurosciences
      Adult, Analysis of Variance, Depression, complications, immunology, psychology, HIV Infections, Humans, Interleukin-6, blood, Neopterin, Neuropsychological Tests, Reverse Transcriptase Polymerase Chain Reaction, Tumor Necrosis Factor-alpha

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          Abstract

          This study examined the role of biological processes in the development of specific neuropsychiatric complications in HAART-naive adults with HIV/AIDS. Depressive symptoms were modestly associated with elevated IL-6 mRNA expression (r(s)=0.40, p<0.05) even after removing the influences of other subjective complaints (pr=0.39, p<0.05). Elevated serum neopterin was strongly associated with depressive symptoms in individuals taking antidepressants (r(s)=0.83, p<0.001), though the association was nullified in those not on antidepressants (r(s)=-0.25, p>0.05). Mean neopterin levels were higher in the depressed as compared with nondepressed group but only for those taking antidepressants (F=45.66, df=1, 11, p<0.001). Neuropsychological impairment was not associated with the biological markers. These findings suggest that systemic immune markers (like neopterin) may be useful in differentiating treatment-resistant individuals at greater risk of developing chronic depression.

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