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Chloride Co-transporter NKCC1 Inhibitor Bumetanide Enhances Neurogenesis and Behavioral Recovery in Rats After Experimental Stroke

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机构: [1]China Med Univ, Affiliated Hosp 1, Dept Neurol, 155 North Nanjing St, Shenyang 110001, Liaoning, Peoples R China; [2]Capital Med Univ, Beijing Tiantan Hosp, Dept Neurol, 6 Tian Tan Xi Li, Beijing, Peoples R China; [3]China Med Univ, Dept Neurol, Benxi Cent Hosp, 29 Shengli Rd, Benxi, Liaoning, Peoples R China; [4]Peking Univ, Sch Basic Med, Dept Med Genet, Xueyuan Rd, Beijing 100191, Peoples R China; [5]Univ Eastern Finland, Inst Clin Med Neurol, POB 1627, Kuopio 70211, Finland
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关键词: Stroke NKCC1 inhibitor Neurogenesis Neuronal survival Behavioral recovery

摘要:
Bumetanide, a selective Na+-K+-Cl--co-transporter inhibitor, is widely used in clinical practice as a loop diuretic. In addition, bumetanide has been reported to attenuate ischemia-induced cerebral edema and reduce neuronal injury. This study examined whether bumetanide could influence neurogenesis and behavioral recovery in rats after experimentally induced stroke. Adult male Wistar rats were randomly assigned to four groups: sham, sham treated with bumetanide, ischemia, and ischemia treated with bumetanide. Focal cerebral ischemia was induced by injection of endothelin-1. Bumetanide (0.2 mg/kg/day) was infused into the lateral ventricle with drug administration being initiated 1 week after ischemia and continued for 3 weeks. Behavioral impairment and recovery were evaluated by tapered/ledged beam-walking test on post-stroke days 28. Then, the rats were perfused for BrdU/DCX (neuroblast marker), BrdU/NeuN (neuronal marker), BrdU/GFAP (astrocyte marker), and BrdU/Iba-1 (microglia marker) immunohistochemistry. The numbers of neuroblasts in the subventricular zone (SVZ) were significantly increased after the experimentally induced stroke. Bumetanide treatment increased migration of neuroblasts in the SVZ towards the infarct area, enhanced long-term survival of newborn neurons, and improved sensorimotor recovery, but it did not exert any effects on inflammation. In conclusion, our results demonstrated that chronic bumetanide treatment enhances neurogenesis and behavioral recovery after experimentally induced stroke in rats.

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出版当年[2016]版
大类 | 2 区 医学
小类 | 2 区 神经科学
最新[2025]版:
大类 | 2 区 医学
小类 | 2 区 神经科学
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Q1 NEUROSCIENCES
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Q1 NEUROSCIENCES

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第一作者机构: [1]China Med Univ, Affiliated Hosp 1, Dept Neurol, 155 North Nanjing St, Shenyang 110001, Liaoning, Peoples R China; [2]Capital Med Univ, Beijing Tiantan Hosp, Dept Neurol, 6 Tian Tan Xi Li, Beijing, Peoples R China;
通讯作者:
通讯机构: [1]China Med Univ, Affiliated Hosp 1, Dept Neurol, 155 North Nanjing St, Shenyang 110001, Liaoning, Peoples R China;
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