Effect of miRNA-933 on the apoptosis and proliferation of LX-2 cells and its molecular mechanism / 临床肝胆病杂志

ObjectiveTo investigate the regulatory effect of miRNA-933 on the apoptosis and proliferation of human hepatic stellate cell line LX-2 and its mechanism. MethodsFirstly， with human liver tissue for research， gene microarray technology was used to detect the differentially expressed genes in liver tissue between liver cirrhosis/chronic hepatitis B tissue and normal liver tissue， among which the significantly differentially expressed miRNAs were identified， and thus miRNA-933 was determined as the research object. Then， with the human hepatic stellate cell line LX-2 for research， miRNA-933 mimic and inhibitor （miRNA-933 siRNA） were used to construct the LX-2 models of overexpression and knockdown， and the cells transfected with mimic-NC （overexpression） or siRNA-NC （knockdown） were established as the negative control group. Quantitative real-time PCR and Western blot were used to measure the expression levels of miRNA-933 and activation biomarkers； techniques such as cell proliferation assay and flow cytometry were used to investigate the effect and mechanism of miRNA-933 on cell apoptosis， proliferation， and activation. The independent-samples t test was used for comparison of continuous data between two groups； a one-way analysis of variance was used for comparison between multiple groups， and Bonferroni correction was also performed. ResultsA total of 18 significantly differentially expressed miRNAs were obtained based on the results of gene microarray， among which miRNA-933 was significantly downregulated （P<0.05）. After LX-2 cells were transfected with miRNA-933 mimic or siRNA， compared with the negative control group， miRNA-933 siRNA significantly downregulated the expression of miRNA-933 （P=0.000 7）， while miRNA-933 mimic significantly upregulated the expression of miRNA-933 （P=0.000 3）. Western blot and quantitative real-time PCR showed that miRNA-933 siRNA significantly upregulated the expression of collagen I and α-SMA （P<0.001）， while miRNA-933 mimic significantly inhibited the expression of collagen I and α-SMA （P<0.05）. Flow cytometry showed that compared with the negative control group， miRNA-933 siRNA significantly downregulated the apoptosis rate of LX-2 cells （P=0.031 9）， and miRNA-933 mimic significantly upregulated the apoptosis rate of LX-2 cells （P=0.005 5）. Western blot showed that compared with the negative control group， miRNA-933 siRNA could inhibit the expression of Caspase-3 （P=0.006 7） and poly（ADP-ribose） polymerase-1 （PARP-1） （P=0.003 0） and upregulate the expression of B-cell lymphoma-2 （Bcl-2） in LX-2 cells （P=0.002 0）， while miRNA-933 mimic could significantly upregulate the expression of Caspase-3 （P=0.011 8） and PARP-1 （P=0.049 5） and downregulated the expression of Bcl-2 （P=0.002 1）. Cell proliferation assay showed that compared with the negative control group， miRNA-933 siRNA could promote the proliferation of LX-2 cells （P=0.011 5）， while on the contrary， miRNA-933 mimic could inhibit the proliferation of LX-2 cells （P=0.001 2）. Western blot and quantitative real-time PCR showed that miRNA-933 siRNA significantly inhibited the expression of Kruppel-like factor 6 （KLF6） and downregulated the expression of activating transcription factor 4 （ATF4）， activating transcription factor 3 （ATF3）， and C/EBP homologous protein （CHOP）， while miRNA-933 mimic promoted the expression of the above proteins （all P<0.05）. ConclusionThis study shows that miRNA-933 may promote cell apoptosis and inhibit cell activation and proliferation by promoting the activation of the KLF6/ATF4/ATF3/CHOP/Bcl-2 signal axis in LX-2 cells.

Regulatory effect and mechanism of macrophage polarization in liver fibrosis / 临床肝胆病杂志

Liver fibrosis is the healing reaction of chronic liver injury caused by various factors such as viral infection， alcohol， and chemical substances and is a key link in the progression of chronic liver diseases to liver cirrhosis and liver cancer. Liver macrophages are considered important mediators of liver injury and repair， and the polarization trend of macrophages has a bidirectional regulatory effect on liver fibrosis. This article reviews the role of different phenotypes of liver macrophages in the development and progression of liver fibrosis， in order to provide new ideas for the prevention and treatment of fibrosis.

Comparison of efficacy and safety of TACE and DEB-TACE in treatment of patients with unresectable hepatocellular carcinoma / 中华肝胆外科杂志

Objective:To compare the clinical efficacy and safety of conventional transcatheter arterial chemoembolization (TACE) with drug-eluting bead transcatheter arterial chemoembolization (DEB-TACE) in treatment of patients with unresectable hepatocellular carcinoma.Methods:The data of patients with unresectable hepatocellular carcinoma who underwent hepatic artery chemoembolization at General Hospital of Ningxia Medical University from July 2019 to April 2020 were retrospectively analyzed. Of 282 patients who were enrolled, there were 233 males and 49 females, aged (55.9±10.0) years. The groups were divided into the conventional TACE group ( n=179) and the DEB-TACE group ( n=103) based on the treatments. The efficacy of the two groups was compared according to the modified response evaluation criteria in solid tumors. Postoperative adverse effects and liver function between the two groups were compared. Results:The differences in comparing the preoperative and postoperative liver function indexes between the two groups were not statistically significant. Patients who died and were lost to follow-up at 6 months after surgery were excluded and 240 patients were excluded in the efficacy analysis, with 148 patients in the conventional TACE group and 92 patients in the DEB-TACE group. At 6 months after treatment in the conventional TACE group, there were 64 patients (43.2%) with complete remission, 18 patients (12.2%) with partial remission, 27 patients (18.2%) with stable disease, and 39 patients (26.4%) with disease progression. In the DEB-TACE group, the corresponding figures were 38 patients (41.3%), 17 patients (18.5%), 26 patients (28.3%), and 11 patients (12.0%), respectively. The efficacy of DEB-TACE was better than conventional TACE with statistically significant differences between the 2 groups (χ 2=8.96, P=0.030). The incidence of postoperative embolic syndrome was 53.1% (95/179) in the conventional TACE group, which was significantly higher than the 34.0% (35/103) in the DEB-TACE group (χ 2=7.34, P=0.007). Conclusion:The efficacy and safety of DEB-TACE for unresectable hepatocellular carcinoma were superior to those of the conventional TACE group.

Clinical application and effect analysis of remote multi-disciplinary team in the treatment of bubonic plague secondary to septicemic plague / 中华地方病学杂志

Objective:To study the remote multi-disciplinary team (MDT) model in diagnosis and treatment of plague, in order to provide scientific basis for clinical treatment of plague.Methods:A retrospective analysis was made on the diagnosis and treatment process of a case of bubonic plague, a sudden imported Class A infectious disease, which was secondary to septicemic plague, involving a remote MDT team consisting of the Infectious Diseases Department, Intensive Care Unit, Respiratory and Critical Care Department, Cardiology Department, Pharmacy Department, and Nosocomial Infection Department of the General Hospital of Ningxia Medical University.Results:The patient was a middle-aged female who was engaged in herding work on the grassland. The first symptom was a sudden pain in the left lower abdomen for three days, accompanied by chest tightness and shortness of breath. After hospitalization, blood culture indicated Yersinia, abdominal CT indicated left lower abdominal lymph node enlargement, and lymph node puncture fluid was positive for Yersinia pestis nucleic acid. Combined with clinical symptoms and signs, the patient was diagnosed as bubonic plague secondary to septicemic plague, and was isolated for treatment. After remote MDT consultation, comprehensive treatment was given, including anti-infection treatment of streptomycin and ciprofloxacin, short-term application of hormones, nutritional support, and local application of chloramphenicol ointment, etc. Secondary acute pancreatitis occurred during the course of the disease, which improved after symptomatic treatment. Finally, after 20 days of treatment, MDT expert group assessed that it met the discharge criteria. No abnormalities were found in follow-up visits outside the hospital. Conclusion:The remote MDT is effective in the treatment of bubonic plague secondary to septicemic plague, which is worth popularizing.

Clinical value of routine contrast esophagram in the diagnosis of anastomotic leakage for three-incision esophagectomy with cervical anastomosis / 中华外科杂志

Objective: To examine the clinical value of routine contrast esophagram (RCE) for the diagnosis of anastomotic leakage (AL) after three-incision esophagectomy with cervical anastomosis. Methods: Clinical data of 1 022 patients with esophageal cancer who underwent McKeown three-incision esophagectomy with cervical anastomosis from January 2015 to December 2019 at Department of Minimally Invasive Esophageal Surgery, Tianjin Medical University Cancer Hospital and Institute were analyzed retrospectively. There were 876 males and 146 females, aging(M(IQR)) 48(16) years (range: 36 to 84 years). There were 253 patients (24.8%) with neoadjuvant therapy, and 817 patients (79.9%) with minimally invasive esophagectomy. According to the diagnosis and treatment habits of the attending surgeons, 333 patients were included in the RCE group, and RCE was performed on the 7th day postoperative, while 689 patients were included in the non-RCE group, and RCE was performed when the patients had suspicious symptoms. Taking clinical symptoms, RCE, CT, endoscopy and other methods as reference to the diagnosis of AL, the sensitivity and specificity were used to analyze and evaluate the efficacy of RCE for the diagnosis of AL. The data were compared by U test or χ² test between groups. Results: The incidence rate of AL after three-incision esophagectomy was 7.34% (75/1 022), including 30 cases in the RCE group and 45 cases in the non-RCE group (9.0%(30/333) vs. 6.5%(45/689), χ²=2.027, P=0.155). The diagnostic time of AL was 9(5) days postoperative (range: 4 to 30 days). Among them, 23 cases showed cervical leakages, 50 cases showed intro-thoracic leakages, and 2 cases both cervical and intro-thoracic leakages. The diagnostic time of patients with intro-thoracic leakages was longer than that of cervical leakages (10(4) days vs. 6(3) days, Z=-2.517, P=0.012). Among the 333 patients in the RCE group, 16 cases of RCE indicated leakages including 11 cases of true positive and 5 cases determined to be false positive, while 317 cases indicated no abnormalities including 19 cases developed leakages. The sensitivity and specificity of RCE to detect AL were 36.7%(11/30) and 98.3%(298/333), respectively. The Youden-index was 0.35, and the diagnostic accuracy was 92.8%(309/333). The positive and negative predictive value were 11/16 and 94.0%(298/317), respectively. Conclusions: Routine contrast esophagram after three-incision esophagectomy with cervical anastomosis has low sensitivity and high specificity in the diagnosis of AL. The diagnostic time of AL is the 9th day after surgery. It is necessary to prolong the observation time clinically, and combine RCE with CT, endoscopy and other inspection methods for diagnosis.

Clinical phenotypic characteristics of 97 adult patients with epidemic encephalitis B / 中华地方病学杂志

Objective:To analyze the clinical phenotype of adult patients with epidemic encephalitis B (encephalitis B) in Ningxia Hui Autonomous Region, and to explore the influence of related factors of the development of encephalitis B.Methods:The medical records of confirmed patients with encephalitis B admitted to the General Hospital of Ningxia Medical University from August to November 2018 were collected, and the general data of patients and the results of laboratory indexes such as blood routine examination and cerebrospinal fluid routine examination were analyzed. Logistic regression analysis and survival curve were used to evaluate the risk factors of the development of encephalitis B.Results:Totally 97 patients with encephalitis B were included, 32 of them died, with a case fatality rate of 32.99%. There were 63 males and 34 females, and the age of onset was (59.13 ± 14.70) years old. There were statistically significant differences in case distribution rate between different sexes and ages (χ 2 = 97.00, 291.00, P < 0.001). The most common clinical type was extremely severe (43 cases), followed by mild (27 cases), severe (15 cases) and ordinary (12 cases). The results of laboratory tests showed that the number of neutrophils, lymphocytes and monocytes in the blood of patients increased; and the white blood cells number in cerebrospinal fluid increased significantly, while neutrophils ratio increased slightly. There were significant differences in cerebrospinal fluid glucose level and neutrophil ratio among patients with different clinical types of encephalitis B ( H = 4.21, 2.74, P < 0.05). There were statistically significant differences in death, hypertension, cerebrovascular diseases, and pulmonary infection among patients with different clinical types of encephalitis B (χ 2 = 34.22, 16.97, 9.91, 15.59, P < 0.05). Logistic regression analysis showed that hypertension [ OR (95% CI) = 5.544 (1.450-21.191)] and pulmonary infection [ OR (95% CI) = 6.490 (1.887-22.325)] were risk factors for the development of encephalitis B patients ( P = 0.012, 0.003). Pulmonary infection was the influencing factor for the death of encephalitis B patients (χ 2 = 18.88, P < 0.001). The survival curve showed that the survival status of encephalitis B patients with cerebrovascular disease and pulmonary infection was significantly worse than that of patients without comorbidity or complications (χ 2 = 6.45, 20.33 , P < 0.05). Conclusions:The majority of encephalitis B patients in this outbreak are the elderly people, and the patient's nervous system has inflammatory reaction. Complicated pulmonary infection is an important factor for the aggravation and death of encephalitis B patients.

Determination of polyaminopropyl biguanide in cosmetics by high performance liquid chromatography / 上海预防医学

Objective:To establish a high performance liquid chromatographic（HPLC） quantitative method for the determination of polyaminopropyl biguanide（PAPB） in cosmetics. Methods:Different forms of cosmetic samples were prepared by ultrasonic extraction and followed by high speed centrifugation of the extraction solution. The supernatant was degreased by hexane， and then was filtered by 0.22 μm millipore filter. The continued filtrate was taken for analysis. An Agilent reversed phase column， Zorbax SB-C18（5 μm，4.6 mm×250 mm）was used with 0.02 mol/L ammonium acetate buffer （pH=4.8） ： methanol （60∶40） as the mobile phase under the condition of isocratic elution. Diode array detection method was used for PAPB determination. Qualitative and quantitative determination of PAPB was conducted in 51 batches of commercially available cosmetics. Results:The relative standard deviations （RSD） were in the range of 1.2 %-4.4 %（n=6）； the recoveries were in the range of 97.5 %-106.5 %.The method showed a good linearity within the concentration range of 5-1 000 μg/mL with correlation coefficient of 0.999 62； The detection limit was 15 mg/kg. In 51 batches of commercially available cosmetics. One batch of makeup remover showed positive resullt， which was consistent with the UV spectrum of the standard. Conclusion:We have established a HPLC method for accurate quantification of PAPB. It can be used for analyzing the cosmetics products.

Effect of apatinib on radiosensitivity of glioma cells / 中华放射医学与防护杂志

Objective:To investigate the effect of apatinib on radiosensitivity of glioma cells U87MG and its potential mechanism.Methods:U87MG cells were divided into control group, apatinib group, radiation group and combination group treated with apatinib and radiation. The effect of different concentrations of apatinib (5, 10, 20, 40, 80 μmol/L) on cell proliferation was detected by CCK8 assay. The effect of apatinib on cell migration and invasion was detected by wound-healing assay and transwell assay, respectively. The effect of apatinib on cell radiosensitivity was detected by plate cloning assay, the cell apoptosis rate was detected by flow cytometry, and the protein expressions of Bax and Bcl-2 were detected by Western blot.Results:Apatinib significantly inhibited the proliferation of U87MG cells in a manner depended on the drug treatment time and radiation. Compared with the radiation group, the cell proliferation, migration and invasion in the combination group were inhibited much significantly ( t=9.857, 18.704, 4.197, P<0.05), so that the value of D0, Dq and SF2 of the combination group was lower, resulting in a radiosensitivity enhancement ratio (SER D0 ) of 1.3. Moreover, compared with the radiation group, the apoptosis rate of the combination group was increased, the expression of Bcl-2 protein was decreased, and the expression of Bax protein was increased ( t=16.187, 8.890, 5.222, P< 0.05). Conclusions:Apatinib inhibits cell proliferation, invasion and migration, induces apoptosis and increases radiosensitivity of glioma cells.

Virological characteristics of cases of COVID-19 in northern Viet Nam, January–May 2020

Background@#Viet Nam confirmed its first case of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection on 23 January 2020 among travellers from Wuhan, China, and experienced several clusters of community transmission until September. Viet Nam implemented an aggressive testing, isolation, contact tracing and quarantine strategy in response to all laboratory-confirmed cases. We report the results of SARS-CoV-2 testing during the first half of 2020 in northern Viet Nam.@*Methods@#Between January and May 2020, 15 650 upper respiratory tract specimens were collected from 14 470 suspected cases and contacts in northern Viet Nam. All were tested for SARS-CoV-2 by real-time RT-PCR. Individuals with positive specimens were tested every three days until two tests were negative. Positive specimens from 81 individuals were cultured.@*Results@#Among 14 470 tested individuals, 158 (1.1%) cases of SARS-CoV-2 infection were confirmed; 89 were imported and 69 were associated with community transmission. Most patients (122, 77%) had negative results after two tests, while 11 and 4 still tested positive when sampled a third and fourth time, respectively. SARS-CoV-2 was isolated from 29 of 81 specimens (36%) with a cycle threshold (Ct) value <30. Seven patients who tested positive again after testing negative had Ct values >30 and negative cultures.@*Conclusion@#Early, widespread testing for SARS-CoV-2 in northern Viet Nam identified very few cases, which, when combined with other aggressive strategies, may have dramatically contained the epidemic. We observed rapid viral clearance and very few positive results after clearance. Large-scale molecular diagnostic testing is a critical part of early detection and containment of COVID-19 in Viet Nam and will remain necessary until vaccination is widely implemented.

Simultaneous determination of 15 mycotoxins in peanuts by ultra high performance liquid chromatography-tandem mass spectrometry with QuEChERS EMR-Lipid approach and stable isotope dilution / 上海预防医学

Objective To develop a method for the simultaneous determination of 15mycotoxins in peanuts by ultra high performance liquid chromatography-tandem mass spectrometry with QuEChERS EMR-Lipid approach and stable isotope dilution. Methods The samples were extracted by 2% formic acid acetonitrile-water (50 : 50, V/V) and then purified with QuEChERS EMR-Lipid approach.The mycotoxins were fully separated on a pentafluorophenyl column under a gradient elution with methonal-0.01%formic acid aqueous solution.The mycotoxins were analyzed by UPLC-MS/MS with multiple reaction monitoring (MRM) mode and quantified by isotope internal standard method. Results Fifteen mycotoxins had good linear relationship in the certain correlation ranges with the correlation coefficients all above 0.995 and the detection limits were 0.1－10 μg/kg.The mean recoveries ranged from 81.2% to 115.3% with RSD (n=6) varying from 2.1% to 10.7%. Conclusion The method is simple, highly sensitive, practical, and proves to be suitable for quantitative analysis of 15 mycotoxins in peanuts.

A preliminary study of serum marker alpha-enolase in the diagnosis of hepatocellular carcinoma / 中华肝脏病杂志

Objective@#To investigate the diagnostic value of serum α-enolase (ENO1) in the primary hepatocellular carcinoma.@*Methods@#From May 2012 to March 2017, 163 cases with liver diseases who met the inclusion and exclusion criteria were admitted to the Infectious Diseases Department of the General Hospital of Ningxia Medical University. Among them, 28 cases were of chronic hepatitis B (CHB), 31 cases with liver cirrhosis (LC), 104 cases with hepatocellular carcinoma (HCC), and 18 healthy volunteers (NC). Patient data and serum samples were collected and liver disease related indicators were measured to detect ENO1 levels with enzyme-linked immunosorbent assay (ELISA). The measured indicators were expressed in median. Mann-Whitney U nonparametric test was used to analyze the differences between the data. A Spearman’s correlation analysis was used for bivariate correlation analysis. The sensitivity and specificity of ENO1 and alpha-fetoprotein in the diagnosis of liver cancer were analyzed by ROC curve.@*Results@#Serum level of ENO1 in CHB group, LC group and HCC group was significantly higher than normal group. Serum level of ENO1 in HCC group was higher than CHB group (P = 0.001) and LC group (P < 0.01). Area under the curve (AUC) for serum ENO1 and alpha-fetoprotein were 0.782 (cut-off value 75.96, P = 0.000 1) and 0.800 (cut-off value 27.02, P = 0.000 1), respectively. There was a positive correlation between ENO1 and AFP (P = 0.001). The combined detection had significantly improved the detection efficiency (AUC = 0.835). Serum ENO1 was statistically significant (P < 0.05) in HCC tumor size (AUC = 0.663), tumor metastasis (AUC = 0.681), TNM stage (AUC = 0.710, stage I vs. II), and Edmondson grade (AUC = 0.685) (P < 0.05) and the elevated levels of ENO1 had significantly reduced (P < 0.05) the survival time.@*Conclusion@#ENO1 can be a new candidate marker for the diagnosis of early stage HCC and its progression.

Study on the relationship between CT image texture changes of parotids and acute xerostomia during radiation treatment for head and neck cancer / 中华放射医学与防护杂志

Objective To investigate the relationship between parotid image texture and acute radiation xerostomia (grade) during radiotherapy in patients with head and neck cancer.The mathematical model was established to predict the severity of radiation dry mouth in the early stage.Methods 23 patients with head and neck cancer treated with radiotherapy were observed.The degree of xerostomia was evaluated according to RTOG criteria.The weekly validated CT images of these patients during radiotherapy were collected and transmitted to the MIM system to outline the parotid gland,and an internal analysis program was developed in MATLAB (R2013a).The changes of texture features of weekly parotid CT images during radiotherapy were analyzed,including mean CT value (MCTN),standard deviation (STD),skewness,kurtosis,entropy and volume.The mathematical model was established,and the KNN method was used to optimize the model and predict the level of xerostomia.Results There was no significant correlation among the changes of MCTN,volume and the degree of xerostomia (P ＞ 0.05).However,according to the weekly changes of MCTN and volume,the model was established to predict the grade of xerostomia with an accuracy of 99％.Conclusions The changes of parotid gland MCTN and volume were significantly correlated with acute radiation xerostomia during radiotherapy for head and neck cancer,and the MCTN changes can be used to predict the severity of xerostomia in the early stage.

PFNA and InterTAN intramedullary nailing in elderly patients with femoral intertrochanteric fractures: a Meta analysis / 中国骨伤

OBJECTIVE@#To evaluate the efficacy and safety of proximal femoral nail antirotation(PFNA) vs InterTAN nail in treating the elderly intertrochanteric femoral fractures.@*METHODS@#Data of the randomized controlled trials(RCTs) about PFNA vs InterTAN for the treatment of the elderly intertrochanteric femoral fractures were searched in as the Cochrane Library, PubMed, EMbase, Wanfang, CNKI, CBM and VIP from their establishment to January 2018 for collecting. After study selection, assessment and data extraction conducted by two reviewers independently, meta-analyses were performed by using the RevMan 5.3 sofware. The level of evidence was assessed by using the GRADEpro system.@*RESULTS@#Twelve studies involving 1 015 patients were included. The results of meta, analyses showed that: (1)safety indicator: compared with the InterTAN, PFNA had shorter operation time, and less intraoperative bleeding. But InterTAN had less total postoperative complications and internal fixation failure, but there was no significant difference in the operative incision lengths, fracture healing time and other postoperative complications. (2)efficacy indicator: compared with the InterTAN, the Harris hip score was lower after 3 months, but Harris hip score had no significant difference between the two groups after 6, 12 months. Based on GRADEpro system, all the evidence was at level C and weak recommendation(2C).@*CONCLUSIONS@#The current evidence indicates that PFNA had a similar effect compared with the InterTAN. But InterTAN could provide better stability against rotation and axial pressure effect, can allow patients do functional exercise early such as ambulation to recovery the hip function. It also had less total postoperative complications and internal fixation failure for the poor quality of the original studies and the limited number of studies, a prudent choice is suggested and more high-quality, large-sample studies are need.

Asiatic acid inhibits LPS-induced inflammatory response via Cardiology, regulating TLR4 and PPAR-γin VSMCs / 中国药理学通报

Aim To observe whether asiatic acid ( AA) can inhibit lipopolysaccharide ( LPS )-induced inflammatory response in VSMCs , and explore its mechanism of action .Methods The VSMCs isolated from aorta of SD rats were primarily cultured . The effect of AA on the cell viability of VSMCs was meas-ured by MTT assay .The protein and mRNA expression of IL-6, MCP-1, and TNF-α, were measured by ELISA assay and real-time PCR, respectively.The protein and mRNA of TLR4 and PPAR-γwere meas-ured by Western blot and real-time PCR, respectively . Results AA exhibited no effect on cellular viability between the concentration from 0 to 30 μmol · L-1 . After treating VSMCs with LPS (500μg· L-1 ) for 6h or 24 h, the protein and mRNA expression of IL-6, MCP-1, TNF-α, and TLR4 significantly increased ( P<0.05 );and on the contrary , the activity of PPAR-γwas significantly reduced ( P<0.05 ) .Treatment with AA (10, 20, 30 μmol· L-1 ) could concentration-de-pendently inhibit LPS-induced protein and mRNA ex-pression of IL-6, MCP-1, TNF-α.AA could also re-duce LPS-induced protein and mRNA expression of TLR4, and pretreatment of the cells with TLR4-siRNA could reduce LPS-induced inflammation . Moreover , treatment with AA could up-regulate the mRNA and protein expression of PPAR-γin VSMCs; however , GW9662 , a PPAR-γantagonist , partially attenuated AA' s anti-inflammatory effect .Conclusion AA can significantly inhibit LPS-induced mRNA and protein expression of IL-6, MCP-1, TNF-α, in VSMCs, which is partially dependent on suppressing TLR 4 and up-regulating PPAR-γ.

Real-time Vessel Navigation Using Indocyanine Green Fluorescence during Robotic or Laparoscopic Gastrectomy for Gastric Cancer

PURPOSE: Identification of the infrapyloric artery (IPA) type is a key component of pylorus-preserving gastrectomy. As the indocyanine green (ICG) fluorescence technique is known to help visualize blood vessels and flow during reconstruction, we speculated that this emerging technique would be helpful in identifying the IPA type. MATERIALS AND METHODS: From August 2015 to February 2016, 20 patients who underwent robotic or laparoscopic gastrectomy were prospectively enrolled. After intravenous injection of approximately 3 mL of ICG (2.5 mg/mL), a near-infrared fluorescence apparatus was applied. The identified shape of the IPA was confirmed by examining the actual anatomy following infrapyloric dissection. RESULTS: The mean interval time between ICG injection and visualization of the artery was 22.2 seconds (range, 14–30 seconds), and the mean duration of the arterial phase was 16.1 seconds (range, 9–30 seconds). The overall positive predictive value (PPV) of ICG fluorescence in identifying the IPA type was 80% (16/20). The IPA type was incorrectly predicted in four patients, all of whom were obese with a body mass index (BMI) of more than 25 kg/m². CONCLUSIONS: Our preliminary results indicate that intraoperative vascular imaging using the ICG fluorescence technique may be helpful for robotic or laparoscopic pylorus-preserving gastrectomy.

Effect of NSC23766 and Y-27632 on invasion and migration of malignant glioma cells and integrin expression based on 3D hydrogel models / 中华神经医学杂志

Objective To observe the changes of invasion and migration patterns and integrin expression of malignant glioma cells when Rac and Rho pathways are suppressed,respectively,in 3D hydrogel.Methods Liposome mediated pCMVLifeAct-TagGFP2 plasmids were transfected into glioma U87 cells,and then,these cells were divided into NSC23766 treatment group,Y-27632 treatment group,NSC23766 and Y-27632 combined treatment group,and control group.The three treatment groups were added NSC23766 (100 nmol/mL),Y-27632 (10 nmol/mL),100 nmol/mL NSC23766 and 10 nmol/mL Y-27632,respectively;the cells in the control group were added the same amount of medium.Cells were cultured in hydrogel;the composition of round cells,spindle cells and the mesenchymal and amoeboid cell movement transition were observed under confocal microscopy.The hydrogels of each group were infused into the microslide,and the cell chemotaxis effect were recorded and the cell movement velocities and distances were calculated in the living cell workstation.Immunofluorescence was used to observe the alternation ofintegrin expression.Results U87 cells cultured in 3D hydrogel exhibited spindle-like and round-like shapes,corresponding to mesenchymal and amoeboid cell movement.As compared with that in the control group,the proportion of round cells in the NSC23766 treatment group was significantly higher,and that of spindle cells in the Y-27632 treatment group was significantly higher (P＜0.05).The conversion rate ofmesenchymal-amoeboid transition was 50.0％ in NSC23766 treatment group and amoeboid mesenchymal transition was 42.8％ in Y-27632 treatment group as compared with that in the control group,with significant differences (P＜0.05).The velocity and distance of cells cultured in 3D hydrogel decreased orderly in NSC23766 treatment group,control group,Y-27632 treatment group and combined treatment group in chemotaxis test.The immunofluorescence test showed that integrin expression in the Y-27632 treatment group was significantly higher than that in the other three groups,and that in the control group was statistically higher than that in the NSC23766 treatment group and combined treatment group (P＜0.05).Conclusions 3D hydrogel can be used as a favorable substrate for cell culture.The combination targeted inhabitation of Rac 1 and RohA pathways provides theoretical basis for anti-invasion treatment against glioma.

Case Report of an Adult Patient Who Underwent a Serial Transverse Enteroplasty Procedure for Short Bowel Syndrome Following an Esophagectomy and Total Gastrectomy

Since its introduction as an alternative intestinal lengthening technique, the serial transverse enteroplasty (STEP) procedure has been used increasingly as the surgical treatment of choice for children with short bowel syndrome (SBS). On the other hand, there are few report of its efficacy in adults with SBS, particularly those who have previously undergone a gastrectomy. This case report describes a 34-year-old woman with a short bowel after an esophagectomy and total gastrectomy due to lye ingestion followed by an extensive intestinal resection due to small bowel strangulation. The STEP procedure was performed successfully and the small intestine was lengthened from 55 to 75 cm. The patient tolerated the procedure well and was weaned off total parenteral nutrition. The frequency and characteristics of diarrhea improved, and her weight remained acceptable via management with intermittent parenteral nutritional support for 6 months postoperatively. This case suggests that the STEP procedure should be considered for gastrectomized patients with SBS.

Epidemiological analysis of epidemic hemorrhagic fever in PLA / 军事医学

Objective To analyze the epidemiological characteristics of epidemic hemorrhagic fever (EHF) in Chinese PLA, and to provide scientific evidence for its prevention and control in military troops .Methods Surveillance data from January 1991 to July 2016 and articles of EHF about PLA were collected and analysed .Results A total of 23 EHF outbreaks were reported by articles in PLA and 17 outbreaks were reported in Northeast , predominant of all reported area and accounting for 73.91%( P <0.01).1666 cases and 12 outbreaks were reported by the system of army epidemic situation inspection information administration and army public health emergencies and infectious disease reporting information from January 1991 to July 2016 , with downward trend of overall incidence , which distributed 734 cases in North China and accounted for 46%(P<0.01).The number of male patients is more than the female (P<0.01).The number of soldier patients is obviously increased compared with the officer (P<0.05).Camp is the most infected place(P<0.05). Conclusion The occurrence of EHF become stable in the PLA , which showed significant difference in gender , occupation categories and infected regions was found .Monitoring should be straightened and comprehensive prevention and control measures should be developed to enhance the ability and level to prevent and control the EHF in high epidemic area in PLA .

Epidemiological analysis of epidemic hemorrhagic fever in PLA / 军事医学

Objective To analyze the epidemiological characteristics of epidemic hemorrhagic fever (EHF) in Chinese PLA, and to provide scientific evidence for its prevention and control in military troops .Methods Surveillance data from January 1991 to July 2016 and articles of EHF about PLA were collected and analysed .Results A total of 23 EHF outbreaks were reported by articles in PLA and 17 outbreaks were reported in Northeast , predominant of all reported area and accounting for 73.91%( P <0.01).1666 cases and 12 outbreaks were reported by the system of army epidemic situation inspection information administration and army public health emergencies and infectious disease reporting information from January 1991 to July 2016 , with downward trend of overall incidence , which distributed 734 cases in North China and accounted for 46%(P<0.01).The number of male patients is more than the female (P<0.01).The number of soldier patients is obviously increased compared with the officer (P<0.05).Camp is the most infected place(P<0.05). Conclusion The occurrence of EHF become stable in the PLA , which showed significant difference in gender , occupation categories and infected regions was found .Monitoring should be straightened and comprehensive prevention and control measures should be developed to enhance the ability and level to prevent and control the EHF in high epidemic area in PLA .

Comparison of cutaneous buckle and conventional cutaneous suture in artistic appearance of anterior cervical incision / 局解手术学杂志

Objective To compare the effect of cutaneous buckle and conventional suture on the suturing time and the artistic appear -ance of postoperative incision with patients who underwent anterior cervical spinal surgery .Methods The patients were randomly divided in-to cutaneous buckle group(50 patients) and conventional suture group(50 patients),the suturing time and artistic appearance of postopera-tive incision of two groups were observed .Results Buckle group and conventional suture group both got good wound healing ,the same heal-ing rate of two groups(100％) showed that there was no statistical difference in healing rate (P>0.05).The mean time of buckle group and conventional group were 7.3 minutes and 13.5 minutes,respectively,the suturing time of cutaneous buckle group was much shorter than con-ventional suture group (P<0.05).The satisfactory degree for artistic appearance of the former was higher than the latter (9.1 vs.6.8 points),the difference was significant(P<0.05).Conclusion Compared with conventional suture ,cutaneous buckle has the advantages of shorter suturing time ,better artistic appearance of incision and higher satisfactory degree in the anterior cervical spinal surgery .