Objective To observe the role of baicalin on the expression of phosphorylated protein of signal transduc-ers and activators of transcription signaling proteins (STATs) during the process that neural stem cells (NSCs) differentiating into neurons. Methods NSCs were isolated from the embryonic cerebral cortex of the 14-15-day pregnant SD rats, which were cultured and passaged in vitro. The 3rd generation of NSCs was used in the experiment. NSCs were randomized into nat-ural differentiation control group, three different doses of baicalin groups (7.5μmol/L, 15μmol/L and 30μmol/L), leukemia inhibitory factor (LIF)+basic fibroblast growth factor (bFGF) group and baicalin+LIF+bFGF group. After 6 d culture in vi-tro, the immunohistochemical method was used to observe the expressions of microtubule-associated protein 2(MAP-2) and glial fibrillary acidic protein (GFAP) in different groups. The expression levels of phosphorylation protein of STAT 3 in NSCs were detected by Western blotting method after 2 h and 6 d of culture. Results The expression of MAP-2 in NSCs was in-creased by baicalin, but the expression of GFAP in NSCs decreased. The expression of GFAP in NSCs was enhanced in LIF+bFGF group, which was inhibited by baicalin+LIF+bFGF. The phosphorylation level of STAT3 in NSCs was downregulat-ed by baicalin, but the phosphorylation level of STAT3 was upregulated in LIF+bFGF group. The upregulated phosphoryla-tion level of STAT3 was inhibited in baicalin+LIF+bFGF group(P＜0.05). Conclusion Baicalin can induce NSCs to dif-ferentiate into neurons, which may be caused by the downregulation of the phosphorylation level of STAT3 in NSCs.

Objective To investigate severe complications of inferior vena cava filter (IVCF) applying for preventing pulmonary embo-lism after spinal cord injury. Methods From December 2014 to July 2015, 95 patients with acute spinal cord injury (SCI) in our hospital were retrospected. Results Deep venous thrombosis (DVT) appeared in 23 cases, in which 15 cases placed IVCF. All patients accepted anti-coagulant therapy, except 10 cases with contraindication. 3 cases had severe complication, in which 2 cases had comprehensive DVT distal to IVCF, with both lower limbs severe swelling, acute renal inadequacy and hypertension;1 case had continuous hyperpyrexia. Conclusion Although the IVCF placement was widely used in acute SCI for preventing pulmonary embolism in patients with DVT, however, the selec-tion of IVCF and complication prevention should be taken into account.