【摘 要】
：
Arsenic trioxide (As2O3) is very effective for treatment of acute promyelocytic leukaemia (APL) but little can pass through the blood-brain-barrier (BBB),which
【机 构】
：
The First Hospital of Harbin Medical University,Shijitan Hospital,Xuanwu Hospital
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Arsenic trioxide (As2O3) is very effective for treatment of acute promyelocytic leukaemia (APL) but little can pass through the blood-brain-barrier (BBB),which limits its use in the prevention and treatment of central nervous system leukaemia (CNSL). Before creating a non-invasive method to help As2O3 s access, the safe and effective therapeutic concentration of As2O3 in the CNS ought to be known. The changes of apoptosis biomarkers, [Ca2+]i and PKC activity of both leukaemia cells and human cortical neurons, were monitored before and after being treated with As2O3 in vitro with laser confocal microscopy and Western blot. NSE concentration, the neuron invasive biomarker, was monitored by enzyme immunoassay (NSE-EIA). This study revealed that cortical neuron was more tolerable to As2O3 compared to NB4. 1.0 μmol / L As2O3 showed little influence on cortical neuron but effectively promoted apoptosis and induced differentiation of NB4.
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