Objective To study the technique and clinical effect of endoscopic surgery using high frequency electrotome with suction device for nasopharyngeal angiofibroma. Methods In this study, we retrospective analyzed the clinical data of 10 patients treated between January 2009 and December 2015. All these patients were treated by endoscopic surgery using high frequency electrotome with suction device. The average blood loss during surgery, tumor residual, recurrent tumor and duration of recovery were evaluated. Results The tumor was completely removed in all 10 patients. The average blood loss was 465 ml, there was no postoperative complication, all patients had no residual tumor, and there was no recurrent tumor over a follow-up of 6~18 months. Conclusion Though it was not preoperative transcatheter arterial embolization, the endoscopic surgery using high frequency electrotome with suction device can be used to treated nasopharyngeal angiofibroma which either limited to nasopharyngeal cavities and paranasal sinus with intraoperative blood pressure control.

Objective To evaluate the clinical effect of the reversed saphenous fasciocutaneous island flap combined with the VSD therapy in plate exposure of the distal tibia.Methods From January 2008 to July 2010,seven patients with hardware exposure following internal fixation of the distal tibia fracture were treated by VSD therapy and reversed saphenous fasciocutaneous island flap reconstruction.The VSD therapy was performed from 7 to 26 days after hardware exposure,and the flap transfer was performed 7 to 14 days after the VSD therapy.The size of the soft-tissue defect ranged from 4 cm × 2 cm to 13 cm × 4 cm.The mean follow-up was 10.6 months after the fracture (range,8-14 months).Results The average times of the VSD therapy was 1.3.After VSD was removed,the exposed hardware was covered by healthy granulation tissue in all cases.All flaps were successfully transplanted,and the size of flap ranged from 6 cm × 3 cm to 15 cm × 6 cm.Six of 7 flaps survived completely without further procedures.The necrosis of the distal margin of the flap occurred in 1 patient.A solid bony union was confirmed by the X-ray in all patients after 4-6 months postoperatively.No skin defects or fistulae were observed.Conclusion The combination of the reversed saphenous fasciocutaneous island flap and VSD therapy could save the exposed hardware and cover the soft tissue defects in the distal tibia.

Objective To study the effect of extract of cockroach on animals with acute hepatic injury and its antiviral action in vitro. Methods The animal models with hepar injury were established by CCl4, bcg vaccine and lipopolysaccharide (LPS) . And the activities of ALT and AST in serum were measured. Serum of ducks was separated after cockroach extract was administrated. The serum was added to the culture fluid of HBV-DNA transfected hepatic cancer cells-HepG2. Results After the cockroach extract was administrated, the activities of ALT and AST in mouse serum were reduced. Both the therapeutic indexes of cockroach extract and lamivudine were larger than 2. Conclusions Cockroach extract can improve the liver function of animals with acute hepatic injury, and inhibit the secretion of ALT and AST in serum.

A series of [1,3]dioxolo[4,5-f]isoindolone derivatives were designed, synthesized and evaluated as inhibitors of acetylcholinesterases (AChE). Furthermore, their effects on memory impairment of mice induced by scopolamine were investigated with step-through test. The results suggested that most of the target compounds exhibited potential inhibition on AChE with IC50 values at micromolar range. Compounds I1 (IC50 value of 0.086 μmol · L(-1)) and I2 (IC50 value of 0.080 μmol · L(-1)) showed the strongest AChE inhibitory activity, which are equipotent to donepezil (IC50 value of 0.094 μmol · L(-1)). Moreover, compounds I1-I4 could improve the memory impairment induced by scopolamine in mice.

A series of novel 4-substituted-3-nitrobenzamide derivatives were designed and synthesized. The structures of the target compounds were confirmed with 1H NMR, 13C NMR, MS and element analysis. Anti-tumor activities against HCT-116, MDA-MB435 and HL-60 cell lines in vitro were evaluated by SRB assay. The results indicated most of the target compounds exhibited potent anti-tumor activity. Compound 4a showed the most potent inhibitory activities against three cancer cell lines with the GI50 values of 1.904-2.111 micromol x L(-1). Compounds 4g, 41-4n exhibited more potent inhibitory activities against MDA-MB435 and HL-60 cell lines with the GI50 values of 1.008-3.586 micromol x L(-1) and 1.993-3.778 micromol x L(-1), respectively. The structure-activity relationship of these compounds is discussed preliminarily.

Objective:Through TTC staining, immunohistochemical analysis, RT-PCR and hind limb motor function evaluation and other experimental methods, to explore the regulatory mechanism of metformin on anti-apoptosis in rats with spinal cord injury (SCI).Methods:Establish a rat spinal cord injury model. Through Basso-Beattie -Bresnahan locomotor rating scale (BBB) and cant test to evaluate the recovery of hindlimb motor function in rats. The changes of necrotic area of spinal cord tissue were compared by TTC staining. Extraction of rat spinal cord tissue, by Dot blot analysis and immunohistochemical detection of the hydroxyl of DNA methylation level. By qPCR, Western Blot detection TET2mRNA and protein expression level, and the changes in the scope of spinal cord injury were detected by inhibiting the expression of TET2. The interaction between TET2 and Foxo3a was detected by immunoblotting and immunoprecipitation. Through RT-PCR assay Foxo3a downstream related changes in the level of gene expression.Results:Compared with the SCI+NS group, the necrotic area of the spinal cord tissue was reduced after metformin treatment, and the BBB score and the incline test score were higher ( P<0.05). At the same time, we found that the levels of TET2mRNA and protein increased significantly after SCI at 24 h, and the 5-hmC level of DNA increased. The levels of TET2mRNA and protein and 5-hmC increased further after the use of metformin. After using SC-1, compared with the SCI+MET group, the level of 5-hmC decreased and the area of infarction increased. After SCI, the mRNA levels of downstream genes Bim, P27kip, Bax increased significantly. After metformin treatment, the mRNA levels of Bim and Bax were lower than those in the SCI+NS group ( P<0.05). After SCI, the 5-hmC levels of downstream genes Bim, P27kip, Bax increased significantly. After metformin treatment, the 5-hmC levels of Bim and Bax were lower than those in the SCI+NS group ( P<0.05). Conclusion:Metformin can promote the interaction between TET2 and Foxo3a, increase the 5-hmC level of the overall DNA, and inhibit the activation of related apoptosis genes, thereby improving tissue damage and nerve function recovery after spinal cord injury.

Objective     To investigate the influence of prior percutaneous coronary intervention (PCI) on the outcome of coronary artery bypass grafting (CABG). Methods     Clinical data of 5 216 patients from Jiangsu Province CABG registry who underwent primary isolated CABG from 2016 to 2019 were retrospectively analyzed. Patients were divided into a PCI group (n=673) and a non-PCI group (n=4 543) according to whether they had received PCI treatment. The PCI group included 491 males and 182 females, aged 62.6±8.2 years, and the non-PCI group included 3 335 males and 1 208 females, aged 63.7±8.7 years. Multivariable logistic regression and propensity score matching (PSM) were used to compare 30-day mortality, incidence of major complications and 1-year follow-up outcomes between the two groups. Results     Both in original cohort and matched cohort, there was no statistical difference in the 30-day mortality [14 (2.1%) vs. 77 (1.7%), P=0.579; 14 (2.1%) vs. 11 (1.6%), P=0.686], or the incidence of major complications (myocardial infarction, stroke, mechanical ventilation≥24 h, dialysis for new-onset renal failure, deep sternal wound infection and atrial fibrillation) (all P>0.05). The rate of reoperation for bleeding in the PCI group was higher than that in the non-PCI group [19 (2.8%) vs. 67 (1.5%), P=0.016; 19 (2.8%) vs. 7 (1.0%), P=0.029]. Both in original cohort and matched cohort, there was no statistical difference in 1-year survival rate between the two groups [613 (93.1%) vs. 4 225 (94.6%), P=0.119; 613 (93.1%) vs. 630 (95.2%), P=0.124], while the re-admission rate in the PCI group was significantly higher than that in the non-PCI group [32 (4.9%) vs. 113 (2.5%), P=0.001; 32 (4.9%) vs. 17 (2.6%), P=0.040]. Conclusion     This study shows that a history of PCI treatment does not significantly increase the perioperative mortality and major complications of CABG, but increases the rate of cardiogenic re-admission 1 year postoperatively.

Hepatocellular carcinoma (HCC) is a common malignant tumor with poor prognosis and high mortality. In this study, we demonstrated a novel vaccine targeting HCC and tumor neovascular endothelial cells by fusing recombinant MHCC97H cells expressing porcine α-1,3-galactose epitopes (αGal) and endorphin extracellular domains (END) with dendritic cells (DCs) from healthy volunteers. END⁺/Gal⁺-MHCC97H/DC fusion cells induced cytotoxic T lymphocytes (CTLs) and secretion of interferon-gamma (IFN-γ). CTLs targeted cells expressing αGal and END and tumor angiogenesis. The fused cell vaccine can effectively inhibit tumor growth and prolong the survival time of human hepatoma mice, indicating the high clinical potential of this new cell based vaccine.