CSF soluble Fas correlates with the severity of HIV-associated dementia.

Soluble Fas (sFas) and soluble Fas ligand (sFasL) are associated with cellular dysfunction and death and are elevated in CSF from patients with HIV dementia (HIV-D). The authors investigated whether these markers correlated with dementia severity and course. sFas and sFasL were measured in 15 highly active antiretroviral therapy (HAART)-naïve HIV-D subjects, 30 HAART-naïve HIV+ controls, and 17 HIV-controls. HIV-D subjects had higher CSF sFas levels than controls. Subjects with moderate/severe dementia had higher CSF sFas levels than those with mild dementia. CSF sFas trended lower in those with progressive dementia.