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Seung-Hun Oh, MD; Jin-Goo Lee, MD; Sang-Jun Na, MD; Ji-Hyung Park, MD; Young-Chul Choi, MD; Won-Joo Kim, MD

Arch Neurol. 2003;60:37-41.

Context  Prompt and precise measurement of neuronal damage in acute cerebral infarction is important to determine the prognosis of functional outcome. A feasible biochemical marker such as the neuron-specific enolase (NSE) level has been used to detect various diseases involving the central nervous system.

Objective  To determine whether the initial serum NSE level is a useful marker for predicting the severity of clinical neurological deficits and the extent of neuronal damage in acute anterior-circulation infarction.

Design  Case-control study with biochemical-clinicoradiological correlation.

Setting  Tertiary care center.

Participants  Eighty-one patients and 77 age- and sex-matched control subjects.

Main Outcome Measures  Patients with anterior-circulation infarction underwent intravenous serum NSE sampling within 24 hours after symptom onset. Recent infarction was confirmed by T2-weighted and diffusion-weighted magnetic resonance imaging of the brain about 1 week after the onset of stroke. Volumetric analysis of infarction was also performed. The National Institutes of Health Stroke Scale score was measured on admission to the hospital and 1 week after symptom onset.

Results  The patients' initial serum NSE levels were statistically significantly higher than the controls (P<.05). The initial serum NSE level highly correlated with the volume of infarction seen on T2-weighted magnetic resonance imaging of the brain (r = 0.62, P<.001) and with the National Institutes of Health Stroke Scale score obtained on hospital admission (r = 0.42, P = .002) and on the seventh day after the onset of stroke (r = 0.44, P<.001).

Conclusion  The initial serum NSE level is a reliable predictor for the extent of neuronal damage and the severity of clinical neurological deficits in acute anterior-circulation infarction.

From the Department of Neurology, Yongdong Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea.

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