Objective To investigate the role of poly(ADP-ribose) polymerase (PARP) inhibitor PJ34 in regulating blood-brain barrier (BBB) permeability and matrix metalloproteinases-9 (MMP-9) expression in a mouse model of traumatic brain injury (TBI).Methods A total of 136 adult male BALB/c mice were randomly divided into sham-operated group,injured group and PJ34-treated group according to the random number table.Controlled cortical impact in mice was established.At 6 and 24hours postinjury,neurological deficit was evaluated,including motor,sensory,reflex and beam balance tests ; BBB permeability and brain water content were detected using Evans blue test and gravimetric technique; brain contusion volume was measured using HE staining; levels of MMP-9 in cytosolic fractions were detected using Western blotting.Results At 6 and 24 hours postinjury,neurological severity score in PJ34-treated group (8.00 ± 0.26,7.50 ±0.25) were lower than those in injured group (12.50 ±0.39,11.80 ± 0.32) ; brain contusion volume in PJ34-treated group [(11.25 ± 0.91) mm3,(13.55 ±1.06) mm3] was lower than those in injured group [(25.37 ± 1.75) mm3,(28.24 ± 1.51) mm3] ; BBB permeability in PJ34-treated group [(440.08 ± 3.10) μg/mg,(860.46 ± 3.86) μg/mg] was lower than those in injured group [(936.96 ± 4.71) μg/mg,(1 302.23 ± 5.89) μg/mg] (all P ＜ 0.01).Brain water content lowered significantly in PJ34-treated group than in injured group at 6 hours postinjury [(80.77 ± 0.76) ％ vs (82.55 ± 0.73) ％,P ＜ 0.0l],but between-group difference was not significant at 24 hours postinjury.Lower levels in MMP-9 were also observed in PJ34-treated group compared with injured group at 6 and 24 hours postinjury(P ＜ 0.05 or 0.01).Conclusion PARP inhibitor PJ34 can attenuate MMP-9 up-regulation,inhibit BBB injury and hence protect the brain against TBI in mice.

Objective To investigate the predictive value of preoperative Aspartate Transaminase and Platelet Ratio Index (APRI) for postoperative complications in patients with hepatocellular carcinoma after liver resection.Methods The clinical data of 278 patients who underwent hepatic resection for hepatocellular carcinoma from January 2010 to December 2013 were retrospectively analyzed.The receiver operating characteristic (ROC) curve was used to determine the cutoff value of APRI.Based on this preoperative APRI,patients were divided into the low-risk group (APRI ≤ 0.37) and the high-risk group (APRI ＞ 0.37).Using univariate analysis and multivariate logistic regression,21 risk factors that might be relevant to postoperative complications were analyzed.Results 159 patients (57.2％) developed postoperative complications.The AUC for APRI in predicting complications was 0.677 (0.615-0.740,P ＜ 0.05).At a cutoff value of APRI at 0.37,the sensitivity was 0.616 and the specificity was 0.697.Univariate analysis and logistic regression analysis showed that APRI (P ＜ 0.05,OR =2.138),degree of ASA (P ＜ 0.05,OR =1.864),prognostic nutritional index (PNI) (P ＜ 0.05,OR =0.354) and volume of blood loss during operation (P ＜ 0.05,OR =2.836) were independent risk factors of postoperative complications.Conclusions A high APRI (＞ 0.37) was a simple and practicable preoperative index to predict postoperative complications in patients with hepatocellular carcinoma after hepatectomy.

AIM: To construct prokaryotic expression vector of human angiogenesis inhibitor arresten gene and express recombinant arresten in Escherichia coli. METHODS: Human arresten gene was amplified from recombinant plasmid pGEM-Arr with polymerase chain reaction (PCR), and then cloned into prokaryotic expression vector pRSET by means of recombinant gene technology. The recombinant plasmid pRSET-Arr was transformed into E.coli BL21(DE3), and recombinant arresten was expressed in the bacteria under induction of IPTG. The expressed products were detected by SDS-PAGE analysis. RESULTS: Restriction analysis indicated that the arresten gene was successfully inserted into the expression vector, and DNA sequencing verified that the reading frame of the recombinant vector was correct. Recombinant arresten was successfully expressed in Escherichia coli; its molecular weight was about 26 kD and its amount was approximately 30% of total bacterial proteins.CONCLUSION: The successful construction of prokaryotic expression vector containing human arresten gene and the effective expression of recombinant arresten in Escherichia coli laid the foundation for further study on its biological functions.

AIM: To investigate the influences of microRNA-126 on the curative effect of chemoradiotherapy and radiosensitivity of SGC-7901 cells.METHODS: The patients of gastric cancer (n=60) were selected in this study including 32 males and 28 females with the average age of (51±7) years.All patients received similar chemoradiotherapy strategy.The tissue and blood samples were collected during treatment.The short-term curative effect was evaluated by the Response Evaluation Criteria in Solid Tumors (RECIST), and the patients were divided into sensitive group and insensitive group.The microRNA-126 levels were detected by RT-qPCR.The SGC-7901 cells were maintained in vitro and transfected with microRNA-126 mimic.The plate colony formation assay was used to determine the enhancement effect of microRNA-126 on radiosensitivity of the SGC-7901 cells.The apoptotic rate of the SGC-7901 cells induced by microRNA-126 was analyzed by flow cytometry.RESULTS: According to the RECIST, 28 cases were defined as sensitive patients and 32 cases were the insensitive patients.Compared with the sensitive patients, the microRNA-126 levels both in blood and tissue samples were lowered in the insensitive patients, and the relative fold changes were 0.72±0.04 and 0.48±0.03, respectively (P<0.05).After transfection with microRNA-126 minic, the SF2 and D0 in the SGC-7901 cells were decreased with the SER of 1.74.Furthermore, microRNA-126 induced apoptosis of SGC-7901 cells and enhanced their radiosensitivity.CONCLUSION: The patients with low microRNA-126 level may suffer a poor curative effect of chemoradiotherapy on the gastric cancer.MicroRNA-126 has an enhancement effect on the radiosensitivity to the SGC-7901 cells.

Objective To conduct a comprehensive evaluation on safety of Honghua Injection through adopting the method of the evidence-based method;To provide reference for clinical reasonable application of Honghua Injection. Methods Computers were used to retrieve some Chinese databases, such as China Biology Medicine, China National Knowledge Infrastructure, Wangfang Database and VIP database. At the same time, other search methods were employed, up to July 2013, including all research types about Honghua Injection. The adverse reactions in the reports of published literature were analyzed by description and statistical analysis. Results Sixty-nine researches on Honghua Injection were included. The total cases of adverse drug reaction (ADR) were 1111, among which male cases were 568 (51%), and female cases were 543 (49%). Thirty-six (52%) papers described ADR of Honghua Injection in detail, and thirty-three (48%) papers just mentioned ADR or did not describe ADR in detail. Skin, skin accessories damage and pathological changes in circulatory system were main contents of ADR. In terms of original diseases, diseases of circulatory system play an important role. Solvent medium was largely in line with its product specification requirements. Most ADR appeared when the drug was used for the first time, from 5 minutes to 5 days. Conclusion The current published literature data show that severe ADR does not happen after the intervention of Honghua Injection.

Objective To evaluate the efficacy of port vein chemotherapy after simultaneous colorectal and liver resection.Methods 18 patients underwent carcinoectomy operation of colon or radical colorectal resection and irregular resection of hepatic metastases simultaneously in a single operation,and were given port vein chemotherapy in and after the operation.Result The survival rate at 1 year and 3 year were 83.3% and 55.6% respectively.Conclusion Patients underwent simultaneously colorectal and liver metastasis resection,port vein chemotherapy can improve response rate and prolong median survival to hepatic metastases of colorectal cancer.

Objective To compare the efficacy of laparoscopic and conventional open total mesorectal excision (TME) in the treatment of rectal cancer, and to explore the considerations of laparoscopic TME. Methods 75 cases of laparoscopic group and 61 cases of open surgery group were analyzed retrospectively, and cohort study was used to compare the perioperative indicators and clinicopathological results in the two groups. Results Between the laparoscopic group and the open surgery group, the operative incision [8.7 cm (8.0-10.0 cm) vs. 13.6 cm (10.0-16.0 cm)], the use of postoperative analgesics (8 cases vs. 23 cases), postoperative time to remove the drainage tube [5 d (5-6 d) vs. 6 d (6-8 d)], postoperative time to get out of bed [3 d (3-7 d) vs. 5 d (4-8 d)] and postoperative hospital stay time [6 d (5-18 d) vs. 8 d (6-25 d)] had statistical difference (all P<0.05). The cost of laparoscopic group was higher than that of open surgery group (each patient in laparoscopic group spent more about 7 000 yuan than ones in open surgery group ). There was a significant difference in the overall complication rate between the laparoscopic group and the open surgery group [6.7 % (5/75) vs. 13.1 % (8/61), P<0.05]. Conclusions The postoperative analgesics, removal of drainage tube time, hospital stay and other indicators in the laparoscopic TME are superior compared with those in the open surgery, but due to the use of high-value consumables, the cost of laparoscopic surgery is higher. Besides, laparoscopic resection of rectal cancer should be careful.

Objective To explore the value of fluid-attenuated inversion recovery (FLAIR)sequence and gradient echo T2 ?weighted image (GRE-T2 ? WI)in diagnosis of acute traumatic extra-axial hemorrhage.Methods 50 patients who were diagnosed as acute traumatic extra-axial hemorrhage by plain CT underwent FLAIR and GRE-T2 ? WI in acute stage.The diagnosis consistency (Kappa ),detection rate of subarachnoid hemorrhage(SAH),epidural hemorrhage(EDH)and subdural hemorrhage(SDH)were compared.The detection rates of SAH in 8 locations among FLAIR,GRE-T2 ? WI and combination of two sequences were analyzed by Chi-square test.Results 48 patients were enrolled in the study.The diagnosis consistency of SAH between FLAIR and GRE-T2 ? WI was high (k =1.0).The detection rate of SAH was 100% for both FLAIR and GRE-T2 ? WI.Comparing with GRE-T2 ? WI and combi-nation of two sequences,FLAIR tended to misdiagnose SAH in perimesencephalic cistern (P <0.05).The diagnosis consistency of EDH between FLAIR and GRE-T2 ? WI was high (k =1.0).3 patients with EDH were all detected by FLAIR and GRE-T2 ? WI. The diagnosis consistency of SDH between FLAIR and GRE-T2 ? WI was high (k =0.943).The detection rate of 12 patients with SDH was 100% in FLAIR,and 1 patient with SDH was missed by GRE-T2 ? WI.Conclusion The detection rate of acute traumatic extra-axial hemorrhage is high for both FLAIR and GRE-T2 ? WI.Combination of two sequences can improve the accuracy of acute traumatic extra-axial hemorrhage in clinic.

Objective To compare the application of two endoscopic retrograde appendicitis therapies(ERAT)in acute uncomplicated appendicitis.Methods 100 patients with acute uncomplicated appendicitis from January 2021 to Jun 2023 were randomly divided into the direct vision group(50 cases)and the control group(50 cases).The control group was treated with conventional ERAT,and the direct vision group was treated with EyeMax Insight pancreaticobiliary imaging system assisted ERAT.The operation time,appendiceal intubation time,success rate of appendiceal intubation,abdominal pain relief time,body temperature recovery time,white blood cell recovery time,hospitalization time,and incidence of surgical complications were compared between the two groups.Results Comparison of appendiceal intubation time and operation time between the two groups:The appendiceal intubation time(5.43±3.51)min and operation time(45.50±10.65)min in the direct vision group were shorter than those in the control group(8.76±5.43)min and(54.32±13.45)min,and the differences were statistically significant(P=0.000).There were no significant differences in the success rate of intubation,recurrence rate,abdominal pain relief time,body temperature recovery time,white blood cell recovery time,hospitalization time and incidence of surgical complications between the two groups(P>0.05).Conclusion ERAT assisted by EyeMax Insight pancreaticobiliary imaging system can shorten the time of appendiceal intubation and operation,without increasing the incidence of complications,avoiding radiation exposure for patients and medical staff.It is safe and effective and worthy of clinical promotion.

Objective: To analyze the application and significance of three-dimensional (3D) printing in the surgical simulation and plan-ning for pelvic malignant tumors before the actual surgery, surgical resection, and postoperative resection effect analysis. Methods: A retrospective analysis was performed for 20 cases of primary pelvic malignant tumors in 11 male and 9 female patients with a mean age of 39.1 years (range, 14-60 years) who were admitted to Xinjiang University of Medical Science and Technology between January 2014 and January 2018. The tumors included osteosarcoma in 7 patients, chondrosarcoma in 12, and Ewing's sarcoma in one. Accord-ing to the Enneking pelvic classification, 10 cases involved the pelvicⅡarea; 6, the pelvicⅢarea; 6, the pelvicⅠandⅡareas; and 8, the pelvic I andⅣareas. According to whether or not a 3D-printed osteotomy guide plate was used, the cases were divided into a 3D-printed guide plate group and a conventional group, with 10 cases in each group. Operation time, blood loss volume, function score, and linear distance deviation were compared between the two groups. Results: The operation was completed successfully with com-plete excision in 20 patients. The operation time in the 3D-printed guide plate group (4.4～1.4 h) was not statistically significantly dif-ferent from that in the control group (4.5～1.4 h; P=0.83). No significant difference in intraoperative blood loss volume was found be-tween the 3D-printed guide plate (1,980～1,158 mL) and control (2,785～1,784 mL; P=0.16) groups. The postoperative Musculoskele-tal Tumor Society score (20.4～0.98) in the 3D-printed guide plate group showed no significant difference from that in the convention-al group (20.2～1.29; P=0.78). The mean linear difference between the 3D-printed guide plate group (3.8～1.9 cm) and the conven-tional group (8.7～1.0) was statistically significant (P=0.001). Conclusions: The 3D-printed group was not significantly different from the conventional group in terms of operation time, blood loss volume, and function score but had better surgical resection accuracy than the conventional group.