CSF-ACE activity in probable CNS neurosarcoidosis.
SARCOIDOSIS, VASCULITIS, AND DIFFUSE LUNG DISEASES : OFFICIAL JOURNAL OF WASOG 2002;
19:191-7. [PMID:
12405488]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
OBJECTIVE
To redefine the utility of CSF-ACE as a selective indicator of probable CNS neurosarcoidosis.
METHODS
The diagnosis of probable CNS neurosarcoidosis required: (a) biopsy evidence of systemic sarcoidosis, (b) cortical, brainstem, and/or spinal cord deficits, (c) enhancing lesions on brain and/or spinal cord MRI, and (d) exclusion of other etiologies which could account for the neurological deficits. Radioassay measurement of CSF-ACE activity was performed in 11 patients who met our criteria for probable CNS neurosarcoidosis and 207 control patients.
RESULTS
The M +/- SD for CSF-ACE activity was significantly higher (p < 0.05) for the 11 probable CNS neurosarcoidosis patients (9.5 +/- 6.9 nmol/mL/min) than for the control patients (2.9 +/- 2.7 nmol/mL/min). The optimal CSF-ACE activity discriminator value was 8 nmol/mL/min. At this value, the sensitivity and specificity of CSF-ACE activity was 55% and 94%, respectively.
CONCLUSIONS
CSF-ACE activity is a useful biochemical marker of probable CNS neurosarcoidosis when brain and/or spinal cord MRI show diffuse enhancing lesions.
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