Eye and brain · 2026
Routine Blood and Cerebrospinal Fluid Markers in Newly Diagnosed Idiopathic Intracranial Hypertension: An Exploratory Case-Control Study.
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Hansen Nadja Skadkær, Schmidt Isabella Falkenberg, Steenfos Therese Wallentin, Korsbæk Johanne Juhl, Jørgensen Niklas Rye, Westgate Connar Stanley James, Hamann Steffen, Beier Dagmar, Jensen Rigmor Højland
Аннотация
BACKGROUND: Idiopathic intracranial hypertension (IIH) is an enigmatic syndrome of raised intracranial pressure and papilledema with metabolic underpinnings, although the exact etiology remains obscure. We aimed to evaluate routine blood and cerebrospinal fluid (CSF) markers covering several organ systems in newly diagnosed IIH and compared to controls.
METHODS: We registered the results of routine blood and CSF analyses in patients consecutively included in a prospective cohort by clinically suspected IIH. We compared females with confirmed IIH (2013 criteria) to "IIH mimics" in whom IIH was refuted (controls). We excluded patients with secondary pseudotumor cerebri syndrome, pregnancy, IIH relapse, age >50 years, male sex, other significant disease, or use of medications associated with multiorgan biochemical abnormalities with a prevalence of >1%.
RESULTS: We compared 139 females with IIH to 78 controls of similar sex, age, and body mass index (BMI). In IIH, we found relatively higher plasma levels of leukocytes (p=0.02), neutrophils (p=0.04), and alkaline phosphatase (p=0.03), and lower levels of plasma urea (p=0.04) and CSF protein (p=0.02). Leukocytes and neutrophils correlated with lumbar opening pressure and were significantly higher in severe papilledema. Findings were not explained by BMI, smoking, or statistically influential covariates.
CONCLUSION: In a well-defined prospective cohort of newly diagnosed IIH restricted by careful censoring of secondary cases and confounding factors, we found relatively increased systemic inflammation in plasma which correlated with markers of more severe IIH disease activity. IIH is likely a heterogeneous and complex disease in which inflammation seems to be involved.
METHODS: We registered the results of routine blood and CSF analyses in patients consecutively included in a prospective cohort by clinically suspected IIH. We compared females with confirmed IIH (2013 criteria) to "IIH mimics" in whom IIH was refuted (controls). We excluded patients with secondary pseudotumor cerebri syndrome, pregnancy, IIH relapse, age >50 years, male sex, other significant disease, or use of medications associated with multiorgan biochemical abnormalities with a prevalence of >1%.
RESULTS: We compared 139 females with IIH to 78 controls of similar sex, age, and body mass index (BMI). In IIH, we found relatively higher plasma levels of leukocytes (p=0.02), neutrophils (p=0.04), and alkaline phosphatase (p=0.03), and lower levels of plasma urea (p=0.04) and CSF protein (p=0.02). Leukocytes and neutrophils correlated with lumbar opening pressure and were significantly higher in severe papilledema. Findings were not explained by BMI, smoking, or statistically influential covariates.
CONCLUSION: In a well-defined prospective cohort of newly diagnosed IIH restricted by careful censoring of secondary cases and confounding factors, we found relatively increased systemic inflammation in plasma which correlated with markers of more severe IIH disease activity. IIH is likely a heterogeneous and complex disease in which inflammation seems to be involved.