Chemical components of Magnoliae Officinalis Cortex of different origins and with different tree ages before and after being processed with ginger juice:a qualitative and quantitative analysis / 中国中药杂志

This study aimed to investigate the impact of ginger juice on chemical profile of Magnoliae Officinalis Cortex(MOC) when they were processed together. Ultra-high-performance liquid chromatography coupled to quadrupole-orbitrap high-resolution mass spectrometry(UHPLC-Q-Orbitrap HRMS) was used for qualitative analysis of the chemical component of MOC samples before and after being processed with ginger juice. UPLC was performed to observe the content variation of eight main components in processed MOC. A total of 174 compounds were identified or tentatively deduced from processed and unprocessed MOC samples according to MS data obtained in positive and negative ion mode. After MOC was processed with ginger juice, the peak areas of most phenolics increased, while the peak areas of most phenylethanoid glycosides decreased; as for neolignans, oxyneolignans, other lignans and alkaloids, changes in the peak area were variable, and the peak areas of terpenoid-lignans varied little. Additionally, gingerols and diarylheptanoids were only detected in the processed MOC sample. The contents of syringin, magnoloside A, and magnoloside B decreased significantly in the processed MOC sample while no significant difference was observed in the contents of magnoflorine, magnocurarine, honokiol, obovatol, and magnolol. This study comprehensively explored the content variation of chemical components in processed and unprocessed MOC samples derived from different regions and with different tree ages using UPLC and UHPLC-Q-Orbitrap HRMS, and summarized the variation characteristics of various compounds. The results provide a data foundation for further research on pharmacodynamic substances of MOC processed with ginger juice.

Construction and application value of a predictive model for prolonged surgical duration in Da Vinci robotic radical gastrectomy for gastric cancer / 中华消化外科杂志

Objective:To investigate the construction and application value of a predictive model for prolonged surgical duration in Da Vinci robotic radical gastrectomy for gastric cancer.Methods:The retrospective cohort study was conducted. The clinicopathological data of 534 patients who underwent Da Vinci robotic radical gastrectomy for gastric cancer in the Fujian Medical University Union Hospital from August 2016 to August 2021 were collected. There were 389 males and 145 females, aged (60±11)years. All 534 patients were randomly divided into the training dataset of 374 cases and the validation dataset of 160 cases with a ratio of 7∶3 based on random number method in the SPSS 25.0 software. Observation indicators: (1) incidence of prolonged surgical duration; (2) intraoperative and postoperative conditions in patients with prolonged surgical duration and without prolonged surgical duration; (3) complications in patients with prolonged surgical duration and without prolonged surgical duration; (4) analysis of risk factors influencing prolonged surgical duration; (5) construction and evaluation of an artificial neural network predictive model for pro-longed surgical duration. Measurement data with normal distribution were represented as Mean± SD, and comparison between groups was conducted using the independent sample t test. Measurement data with skewed distribution were represented as M( Q1, Q3), and comparison between groups was conducted using the Mann-Whitney U test. Count data were described as absolute numbers or per-centages, and comparison between groups was conducted using the chi-square test or Fisher exact probability. Comparison of ordinal data was analyzed using the nonparametric test. Univariate and multivariate analyses were conducted using the Logistic regression model. Based on the results of univariate analysis, a multilayer perceptron was employed to train an artificial neural network pre-dictive model for prolonged surgical duration. The receiver operating characteristic (ROC) curve was drawn, and the area under curve (AUC), the accuracy, sensitivity, specificity, positive predictive value, and negative predictive value were used to assess the model′s performance. Results:(1) Incidence of prolonged surgical duration. Of 534 patients, 284 cases underwent total gastrectomy, and 250 cases underwent distal gastrectomy, with operation time of (206±42)minutes and (187±36)minutes, res-pectively. Cases with prolonged surgical duration and without prolonged surgical duration who under-went total gastrectomy were 41 and 243, and cases with prolonged surgical duration and without prolonged surgical duration who underwent distal gastrectomy were 40 and 210. The gender (male, female), age, body mass index (BMI), tumor diameter, tumor location (upper stomach, middle stomach, lower stomach, mixed type), cases with neoadjuvant therapy, cases with preoperative American Society of Anesthesiologists (ASA) score as 1, 2, 3, cases with clinical T staging as stage T1, stage T2, stage T3, stage T4a, cases with clinical N staging as stage N0, stage N1, stage N2, stage N3, cases with clinical TNM staging as stage Ⅰ, stage Ⅱ, stage Ⅲ, cases with surgical resection scope as total gastrec-tomy or distal gastrectomy, cases with digestive tract reconstruction method as Billroth-Ⅰ anasto-mosis, Billroth-Ⅱ anastomosis, Roux-en-Y anastomosis, cases with surgeon experiences as ≤20 cases or >20 cases were 61,20, (61±9)years, (24±3)kg/m2, 4.0(2.5, 5.0)cm, 34, 10, 33, 4, 1, 3, 73, 5, 3, 6, 26, 46, 14, 41, 19, 7, 5, 13, 63, 41, 40, 1, 33, 47, 5, 76 in the 81 patients with prolonged surgical duration, versus 328, 125, (60±11)years, (23±3)kg/m2, 3.5(2.0, 5.0)cm, 129, 71, 227, 26, 6, 45, 382, 26, 73, 100, 118, 162, 211, 180, 52, 10, 138, 108,207, 243, 210, 13,200, 240, 15, 438 in the 453 patients without prolonged surgical duration, showing significant differences in the BMI, clinical T staging, clinical N staging, clinical TNM staging ( t=-3.68, Z=-4.63, -5.53, -5.56, P<0.05), and no significant difference in the gender, age, tumor diameter, tumor location, preoperative ASA score, surgical resec-tion scope, digestive tract reconstruction method, and surgeon experiences ( χ2=0.29, t=-0.95, Z=-1.27, χ2=5.92, Z=-1.46, χ2=0.25, 1.35, 0.87, P>0.05). There was no significant difference in cases with neoadjuvant therapy between them ( P>0.05). (2) Intraoperative and postoperative conditions in patients with prolonged surgical duration and without prolonged surgical duration. The operation time, volume of intraoperative blood loss, the number of lymph nodes dissected, time to postopera-tive first ambulation, time to postoperative anal exhaust, time to postoperative first intake of liquid diet, time to postoperative first intake of semi-liquid diet, duration of postoperative hospital stay were (261±34)minutes, 50(30, 50)mL, 39±15, (2.3±0.6)days, (3.4±0.9)days, (4.1±1.2)days, (5.7±1.2)days, 8.0(7.0, 9.0)days in the 81 patients with prolonged surgical duration, versus (186±29)minutes, 30(20,50)mL, 42±14, (2.2±0.6)days, (3.4±0.8)days, (4.1±1.1)days, (5.7±1.4)days, 8.0(7.0, 9.0)days in the 453 patients without prolonged surgical duration, showing significant differences in operation time, volume of intraoperative blood loss ( t=-20.46, Z=-3.32, P<0.05), and no significant difference in the number of lymph nodes dissected, time to postoperative first ambulation, time to postopera-tive anal exhaust, time to postoperative first intake of liquid diet, time to first intake of semi-liquid diet, duration of postoperative hospital stay ( t=1.87, -0.87, -0.16, 0.28, 0.03, Z=-1.45, P>0.05). (3) Complications in patients with prolonged surgical duration and without prolonged surgical duration. The overall incidence of complications, incidence of surgical complications (abdominal infection, anastomotic fistula, abdominal bleeding, incision-related complications, intestinal obstruction, lymphatic fistula), incidence of medical complications (pulmonary infection, liver-related complications) were 22.22%(18/81), 0, 0, 2.47%(2/81), 0, 8.64%(7/81), 1.23%(1/81), 12.35%(10/81), 1.23%(1/81) in the 81 patients with prolonged surgical duration, versus 13.47%(61/453), 2.65%(12/453), 0.44%(2/453), 1.77%(8/453), 0.44%(2/453), 3.31%(15/453), 0, 7.28%(33/453), 1.55%(7/453) in the 453 patients without prolonged surgical duration, showing a significant difference in the overall incidence of complications ( χ2=4.18, P<0.05), and no significant difference in the incidence of abdo-minal infection, anastomotic fistula, abdominal bleeding, incision-related complications, intestinal obstruction, lymphatic fistula, liver-related complications ( P>0.05). There was no significant difference in the incidence of pulmonary infection between them ( χ2=2.38, P>0.05). (4) Analysis of risk factors influencing prolonged surgical duration. Results of univariate analysis showed that BMI ≥25 kg/m2, tumor located in the lower stomach, clinical T3-T4a stage, clinical N1-N3 stage were correlated factors influencing prolonged surgical duration in Da Vinci robotic radical gastrectomy for gastric cancer ( odds ratio=1.88, 0.40, 6.24, 6.51, 3.08, 3.39, 17.15, 95% confidence interval as 1.03-3.42, 0.21-0.76, 1.40-27.76, 1.50-28.30, 1.43-6.60, 1.29-8.92, 4.84-60.74, P<0.05). Results of multivariate analysis showed that BMI ≥25 kg/m2, clinical T3 stage, clinical N3 stage were independent risk factors influencing prolonged surgical duration in Da Vinci robotic radical gastrectomy for gastric cancer ( odds ratio=2.31, 4.97, 11.08, 95% confidence interval as 1.19-4.46, 1.05-23.55, 2.72-45.13, P<0.05). (5) Construction and evaluation of an artificial neural network predictive model for pro-longed surgical duration. The BMI, tumor location, clinical T staging, and clinical N staging were incorporated into a multilayer perceptron to construct an artificial neural network predictive model for prolonged surgical duration. Results of ROC curve showed that the AUC, accuracy, sensitivity, specificity, positive predictive value, negative predictive value of the predictive model in the training dataset were 0.73 (95% confidence interval as 0.68-0.78), 91.4%, 68.1%, 94.8%, 65.3%, 95.4%. The above indicators of the predictive model in the validation dataset 0.72 (95% confidence interval as 0.65-0.79), 88.1%, 67.6%, 93.7%, 74.2%, 91.5%. Conclusions:BMI ≥25 kg/m2, clinical T3 stage, clinical N3 stage are independent risk factors influencing prolonged surgical duration in Da Vinci robotic radical gastrectomy for gastric cancer. The artificial neural network predictive model con-structed based on BMI, tumor location, clinical T staging, and clinical N staging can effectively predict patients at high risk of prolonged surgical duration in Da Vinci robotic radical gastrectomy for gastric cancer.

Research on the Resource Allocation Level and Equity Measurement of China's Health and Pension Industry / 中国卫生经济

Objective:To construct an indicator system to comprehensively evaluate the resource allocation level of the health and pension industry in 31 provinces of China from 2016 to 2021,calculate the fairness of resource allocation,clarify the problems in resource allocation of the health and pension industry in China,and promote high-quality development of the health and pension industry.Methods:The entropy method is used to comprehensively evaluate the level of resource allocation in the health care industry,and the Gini coefficient and Theil index are used to analyze the fairness of resource allocation in the health care industry.Results:The level of resource allocation in the health and pension industry is generally not high,with significant inter provincial differences;the unequal allocation of resources in the health industry is on the rise;regional differences are the leading force that causes differences in the fairness of resource allocation in the health and pension industry.Conclusion:It is suggested to improve the infrastructure and stimulate the endogenous impetus of the development of the health and pension industry;deeply cultivate market demand and improve the level of resource allocation in the health and pension industry;optimize financial investment and bridge the gap in regional health resource allocation.

Establishment of artificial neural network model for predicting lymph node metastasis in patients with stage Ⅱ-Ⅲ gastric cancer / 中华胃肠外科杂志

Objective: To establish a neural network model for predicting lymph node metastasis in patients with stage II-III gastric cancer. Methods: Case inclusion criteria: (1) gastric adenocarcinoma diagnosed by pathology as stage II-III (the 8th edition of AJCC staging); (2) no distant metastasis of liver, lung and abdominal cavity in preoperative chest film, abdominal ultrasound and upper abdominal CT; (3) undergoing R0 resection. Case exclusion criteria: (1) receiving preoperative neoadjuvant chemotherapy or radiotherapy; (2) incomplete clinical data; (3) gastric stump cancer.Clinicopathological data of 1231 patients with stage II-III gastric cancer who underwent radical surgery at the Fujian Medical University Union Hospital from January 2010 to August 2014 were retrospectively analyzed. A total of 1035 patients with lymph node metastasis were confirmed after operation, and 196 patients had no lymph node metastasis. According to the postoperative pathologic staging. 416 patients (33.8%) were stage Ⅱ and 815 patients (66.2%) were stage III. Patients were randomly divided into training group (861/1231, 69.9%) and validation group (370/1231, 30.1%) to establish an artificial neural network model (N+-ANN) for the prediction of lymph node metastasis. Firstly, the Logistic univariate analysis method was used to retrospectively analyze the case samples of the training group, screen the variables affecting lymph node metastasis, determine the variable items of the input point of the artificial neural network, and then the multi-layer perceptron (MLP) to train N+-ANN. The input layer of N+-ANN was composed of the variables screened by Logistic univariate analysis. Artificial intelligence analyzed the status of lymph node metastasis according to the input data and compared it with the real value. The accuracy of the model was evaluated by drawing the receiver operating characteristic (ROC) curve and obtaining the area under the curve (AUC). The ability of N+-ANN was evaluated by sensitivity, specificity, positive predictive values, negative predictive values, and AUC values. Results: There were no significant differences in baseline data between the training group and validation group (all P>0.05). Univariate analysis of the training group showed that preoperative platelet to lymphocyte ratio (PLR), preoperative systemic immune inflammation index (SII), tumor size, clinical N (cN) stage were closely related to postoperative lymph node metastasis. The N+-ANN was constructed based on the above variables as the input layer variables. In the training group, the accuracy of N+-ANN for predicting postoperative lymph node metastasis was 88.4% (761/861), the sensitivity was 98.9% (717/725), the specificity was 32.4% (44/136), the positive predictive value was 88.6% (717/809), the negative predictive value was 84.6% (44/52), and the AUC value was 0.748 (95%CI: 0.717-0.776). In the validation group, N+-ANN had a prediction accuracy of 88.4% (327/370) with a sensitivity of 99.7% (309/310), specificity of 30.0% (18/60), positive predictive value of 88.0% (309/351), negative predictive value of 94.7% (18/19), and an AUC of 0.717 (95%CI:0.668-0.763). According to the individualized lymph node metastasis probability output by N+-ANN, the cut-off values of 0-50%, >50%-75%, >75%-90% and >90%-100% were applied and patients were divided into N0 group, N1 group, N2 group and N3 group. The overall prediction accuracy of N+-ANN for pN staging in the training group and the validation group was 53.7% and 54.1% respectively, while the overall prediction accuracy of cN staging for pN staging in the training group and the validation group was 30.1% and 33.2% respectively, indicating that N+-ANN had a better prediction than cN stage. Conclusions: The N+-ANN constructed in this study can accurately predict postoperative lymph node metastasis in patients with stage Ⅱ-Ⅲ gastric cancer. The N+-ANN based on individualized lymph node metastasis probability has better accurate prediction for pN staging as compared to cN staging.

Comparison of efficacy of femoral tunnel creation with figure-of-four position and traditional knee hyperflexed position for arthroscopic anterior cruciate ligament reconstruction using tendon autograft / 中华创伤杂志

Objective:To compare the efficacy of arthroscopic anterior cruciate ligament reconstruction using tendon autograft with figure-of-four position and traditional knee hyperflexed position for femoral tunnel creation.Methods:A retrospective case series study was conducted to analyze the clinical data of 46 patients with ACL injury admitted to Second Affiliated Hospital of Harbin Medical University from August 2019 to October 2019, including 26 males and 20 females; aged 24-40 years [(31.1±7.5)years]. All patients underwent arthroscopic ACL reconstruction using tendon autograft. The femoral tunnel was created with figure-of-four position in 21 patients (figure-of-four position group) and with traditional knee hyperflexed position in 25 patients (knee hyperflexed position group). The operation time was compared between the two groups. The center position, length and angle of femoral tunnel were evaluated and measured by three dimensional CT reconstruction and Bernard quadrant method at 8 weeks postoperatively. The knee function was assessed by knee Lysholm score preoperatively, at 8 weeks and at 1 year postoperatively. Complications were observed as well.Results:All patients were followed up for 2-20 months [(15.3±2.1)months]. The operation time was (28.5±2.6)minutes in figure-of-four position group, significantly less than (39.5±2.4)minutes in knee hyperflexed position group ( P<0.05). The tunnel center position was located at (27.1±1.4)% and (25.1±2.6)% within the Bernard quadrant in figure-of-four position group, similar with (28.1±2.8)% and (26.1±3.1)% in knee hyperflexed position group (all P>0.05). Total tunnel length and thick tunnel length were (42.1±2.4)mm and (34.1±2.4)mm in figure-of-four position group, significantly longer than (38.2±2.5)mm and (31.1±2.7)mm in knee hyperflexed position group (all P<0.05). The coronal plane angle of the tunnel was (41.1±2.4)° in figure-of-four position group, significantly smaller than (47.5±2.6)° in knee hyperflexed position group ( P<0.05). The sagittal plane angle of the tunnel was (42.1±1.4)° in figure-of-four position group, significantly greater than (37.1±1.8)° in knee hyperflexed position group ( P<0.05). Figure-of-four position group showed the knee Lysholm score of (53.4±5.2)points preoperatively, (97.1±1.4)points at 8 weeks postoperatively and (98.3±2.3)points at 1 year postoperatively. Knee hyperflexed position group showed the knee Lysholm score of (54.3±7.4)points preoperatively, (97.1±1.6)points at 8 weeks postoperatively and (98.1±1.3)points at 1 year postoperatively. The knee Lysholm score did not differ significantly between the two groups (all P>0.05), but the knee function was significantly improved in both groups when compared with that before the operation (all P<0.05). There were 1 patient with femoral tunnel fracture, one with injury to the medial condylar cartilage and one with injury to the posterior root of lateral meniscus in knee hyperflexed position group, while no above-mentioned complications occurred in figure-of-four position group ( P<0.05). Conclusion:Arthroscopic ACL reconstruction using tendon autograft with femoral tunnel creation through figure-of-four position and traditional knee hyperflexed position can both contribute knee functional recovery, but the figure-of-four position has the advantages of short operation time, accurate tunnel positioning, favorable length and angle of the tunnel and less complications.

Geo-herbalism study of Magnoliae Officinalis Cortex / 中国中药杂志

Magnoliae Officinalis Cortex( MOC),the stem bark of Magnolia officinalis( MO) and M. officinalis var. biloba( MOB),is a main ingredient in more than 200 types of Chinese formulae commonly used in clinics. MO and MOB are widely distributed in China,from Sichuan of the west to Zhejiang province of the east and from Shannxi province in the north to Guangxi province in the south. This review summarizes new findings on geo-heralism of MOC concerning textual research,plants taxonomy,genetic study,chemical study,and pharmacological activity,resulting in the following views. ①The original plants of MOC are suggested to be divided into three geographic clans according to the form of leave and the result of genetic research; ②Concentrations of magnolol,honokiol,magnoloside A,magnoloside B,magnoflorine,and β-eudesmol in samples collected from different geographic areas are varied;③Samples of MOC produced in Hubei and Sichuan were traditionally regarded as Dao-di herbs,which were called Chuanpo,and the pure haplotype of MOC produced in Hubei may become a genetic index.

Comparison of clinical efficacy of complete and incomplete radical debridement for spinal tuberculosis: a Meta-analysis / 中国骨伤

<p><b>OBJECTIVE</b>To compare clinical efficacy of complete and incomplete radical debridement for spinal tuberculosis by Meta-analysis.</p><p><b>METHODS</b>The literatures of RCT or non-RCT with complete and incomplete radical debridement for spinal tuberculosis from Medline, EMBASE, Cochrane Library, Web of Science, CBM, CNKI and Wanfang were searched from the time of creating database to July, 2017. Two independent reviewers identified eligible studies, extracted data and evaluated risk of bias of included studies. Meta analysis were performed by Revman 5.3 and GRADE system were used to grade evidence. Recurrence rate, adverse effects, healing time, chemotherapy duration, spinal deformity by correction angle, bone fusion time in interface of intervertebral, erythrocyte sedimentation rate and C-reaction protein were compared between two groups.</p><p><b>RESULTS</b>Totally 9 literatures were chosen, including 5 RCT and 4 non-RCT with 1 302 patients. Compared with incomplete radical debridement, complete radical debridement had lower recurrence rate [=0.14, 95%CI(0.08, 0.22), <0.000 01], lower rate of adverse effects[=0.18, 95%CI(0.12, 0.27), <0.000 01], shorter healing time[MD=-4.80, 95%CI(-5.14, -4.45), <0.000 01]and chemotherapy duration [MD=-5.25, 95%CI(-5.64, -4.86), <0.000 01], larger spinal deformity by correction angle[MD=4.88, 95%CI(3.55, 6.27), <0.000 01], smaller erythrocyte sedimentation rate[MD=-8.74, 95%CI(-11.99, -5.49), <0.000 01] and C-reaction protein [MD=-4.75, 95%CI(-8.61, -0.88), =0.02] . However, there was no difference on bone fusion time in interface of intervertebral between two groups[MD=-0.19, 95%CI(-0.50, 0.12), =0.23].</p><p><b>CONCLUSIONS</b>Compared with incomplete radical debridement, complete radical debridement has advantages of lower incidence of recurrence, lower rate of adverse reaction, shorten healing time and chemotherapy time, recovered faster. Techniques are selected according to indication of patients individual, complete radical debridement is recommended at the same indications.</p>

Effects of OSAS model IH on the expressions of YAP and P-YAP in lung cancer cell lines / 天津医药

Objective To explore the effect of obstructive sleep apnea syndrome (OSAS), OSAS-like intermittent hypoxia (IH)on the expression levels of P-YAP and YAP in A549 lung cancer cell lines. Methods A549 cells were treated with IH exposure ( exposed to 5%O2 for 300 seconds and 21%O2 for 300 seconds) for 1, 3 and 6 h (IH1, IH3, IH6) or normoxia exposure (N group). Quantificational real-time PCR was used to measure the mRNA expression levels of YAP. Western blot assay was used to detect the protein expression levels of YAP and P-YAP. Results The mRNA expression levels of YAP were significantly increased with the increase of IH exposure time points in IH1 (2.50±0.18), IH3 (4.07±0.25) and IH6 (9.18 ± 0.58) groups than those in N group (1.00 ± 0.01) (all P<0.05). The protein expression levels of YAP were significantly increased with the increase of IH exposure time points in IH1, IH3 and IH6 groups than those in N group. The protein expression levels of P-YAP were significantly decreased with the increase of IH exposure time points in IH 1, IH3 and IH6 groups than those in N group. Conclusion YAP cell signaling plays an important role in the process of OSAS-like IH induced tumor development.

Prognostic value of circulating catestatin levels for in-hospital heart failure in patients with acute myocardial infarction / 中华心血管病杂志

<p><b>OBJECTIVE</b>To determine whether circulating level of catestatin (CST) could provide prognostic information independently of conventional risk markers for the development of in-hospital heart failure in patients with ST-segment elevation myocardial infarction (STEMI).</p><p><b>METHODS</b>The data of 120 STEMI patients (mean age: 61 years, 73% male) were collected from the Second Hospital of Shanxi Medical University and Taiyuan Central Hospital between November 2010 and September 2011.The patients were categorized into 4 groups according to CST (ng/L) quartile: ≤ 74.72, 74.73-79.67, 79.68 - 84.21 and ≥ 84.22 ng/L. Clinical features, therapeutic approaches were compared among groups. The patients were also grouped according to Killip class: Killip level I (n = 68), Killip level II (n = 23), Killip level III (n = 18), Killip level IV (n = 11). CST, NE and NT-proBNP were compared among groups. The Spearma rank correlation and multivariate logistic regression analysis were applied to determine the association between risk factors and in-hospital heart failure. Receiver-operator characteristic (ROC) curve was performed to evaluate the power of CST and NT-proBNP on predicting in-hospital heart failure.</p><p><b>RESULTS</b>Gender, hospital days, past history of smoking, hypertension, myocardial infarction, CK-MB peak level, TnI peak level, heart rate, blood pressure, blood glucose, blood lipid levels on admission and early reperfusion therapy were similar among groups. Patients with higher CST values were more likely to be older, to have lower body mass index, to have higher white blood cell count, CysC, hs-CRP, NE, NT-proBNP, past history of angina, diabetes mellitus, being diuretic users, and to have a lower ejection fraction (all P < 0.05). Higher CST levels were also associated with increased risk of heart failure (P < 0.05). In proportion with the deterioration of the cardiac function, CST, NE, NT-proBNP concentration gradually increased (all P < 0.05). Spearman rank correlation analysis showed that the CST was negatively correlated with LVEF (r(s) = -0.923, P < 0.001) and positively correlated with NT-proBNP (r(s) = 0.884, P < 0.001). After multivariate adjustment, CST remained to be an independent risk factor for the development of in-hospital heart failure (OR = 1.125, 95%CI: 1.056 - 1.198;P < 0.001). The area under the ROC curve of CST and NT-proBNP was 0.777 and 0.874. Using CST = 77.29 ng/L as a cut-off value, the sensitivity was 92.8% and specificity was 70.6% for predicting the development of in-hospital heart failure.</p><p><b>CONCLUSION</b>The plasma CST level is an independent predictor for the development of in-hospital heart failure in patients with STEMI.</p>

pcDNA3.1-osteogenic growth polypeptide eukaryotic expression vector in bone marrow mesenchymal stem cells / 中国组织工程研究

BACKGROUND: Osteogenic growth polypeptide (OGP) had clear effect on promoting osteoblast proliferation, differentiation and mature. OBJECTIVE: To explore the expression of OGP gene, which was transfected into rabbit bone marrow mesenchymal stem cells (BMSCs) and to evaluate the effects of OGP on differentiation of rabbit BMSCs. METHODS: pcDNA3.1-OGP was constructed using gene cloning and recombination techniques. Rabbit BMSCs were transfected with pcDNA3.1-OGP mediated by lipofectamine 2000. The transfection positive cell clones were selected with G418. The expression of OGP gene was detected using reverse transcription-polymerase chain reaction analysis on an mRNA level. Differentiation of pcDNA3.1-OGP transfected BMSCs into osteoblast lineage was observed. RESULTS AND CONCLUSION: The pcDNA3.1-OGP plasmid was constructed successful and OGP expression was detected in rabbit BMSCs. Hydroxyproline content was increased, and alkaline phosphatase activity was also increased. These indicate that pcDNA3.1-OGP transfected BMSCs expressed OGP, and could differentiate into osteoblast lineage.

Construction of exogenous recombinant eukaryotic expression vector pcDNA3.1-hBMP-7 and transfection into rabbit bone marrow stromal cells / 中国组织工程研究

BACKGROUND:Under the in vitro conditions of cell harvesting, culture, and transplantation, whether bone marrow stromal cells (BMSCs) can be effectively applied in local gene therapy remains unclear.OBJECTIVE: To construct a recombinant eukaryotic expression plasmid carrying human bone morphogenetic protein-7 (hBMP-7) gene, and to expect to enhance osteoinductive properties of rabbit BMSCs transfected.DESIGN, TIME AND SETTING: A cell-genomics in vitro observation was performed at the Laboratory of Scientific Research, Second Affiliated Hospital of Harbin Medical University between July 2006 and July 2007.MATERIALS: Human healthy fresh placental tissue was provided by the Department of Gynaecology and Obstetrics, Second Affiliated Hospital of Harbin Medical University. Written informed consent was obtained from the women. One healthy male New Zealand rabbit was provided by the Laboratory Animal Center, Harbin Medical University.METHODS: hBMP-7 gene was cloned from human placental tissue to construct a recombinant eukaryotic expression plasmid carrying hBMP-7 gene by conjugating with eukaryotic expression vector pcDNA3.1. BMSCs were isolated from rabbit bone marrow and cultured in vitro. Then they were divided into 3 groups: pcDNA3.1-hBMP-7-transfected, pcDNA3.1 -transfected, and untransfected. 5×106 BMSCs were inoculated into a 60 mm3 flask containing antibiotic-free medium 1 day prior to transfection.MAIN OUTCOME MEASURES: RT-PCR and immunohistochemistry were employed to detect hBMP-7 expression in BMSCs, alkaline phosphatase activity, hydroxypreline content, and osteocalcin production in each group. RESULTS: After 72-hour transfection, a 1.3 kb fragment was seen in the pcDNA3.1-hBMP-7-transfected group, showing brown granules in the endochylema, but not seen in the pcDNA3.14ransfected and untransfected groups. ALP activity in the pcDNA3.1-hBMP-7-transfected group significantly increased at 2 days after transfection, peeked at 8 days, and still increased at 10 days. At each time point, alkaline phosphatase activity, hydroxyproline content, and osteocalcin production were significantly higher in the pcDNA3.1-hBMP-7-transfected group than in the pcDNA3.1 -transfected and untransfected groups (P<0.05 or P<0.01).CONCLUSION: Recombinant eukaryotic expression vector pcDNA3.1- BMP-7 was constructed successfully. Results indicated that hBMP-7 was expressed in BMSCs sufficiently and was involved in inducing differentiation of BMSCs into osteoblasts. The method would provide substantial basement for hBMP-7 gene therapy.

Prevalence of high-risk human papillomavirus infection in different cervical lesion among organized health-examination women in Shanghai, China / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Cervical cancer is the second most common cause of death from cancer among women worldwide. Human papillomavirus (HPV) plays a central role in the etiology of cervical cancer. It is important to describe the prevalence of HPV infection in different types of cervical lesions and to explore the relation between HPV viral load and the severity of cervical lesions.</p><p><b>METHODS</b>To describe the HPV infection prevalence and viral load in different age groups, we retrospectively investigated 6405 cases of women who were organized by their units to take health-examination. They were given Hybrid Capture II tests between January 2005 and December 2006. The correlation between HPV viral load and pathology was assessed.</p><p><b>RESULTS</b>Overall HPV infection prevalence was 29.1% (1864/6405), while in women 18-20 years old it was 54.4% (31/57), the highest among all age groups. After declining rapidly, HPV prevalence stabilized at about 30.0% in women aged 30 and older. Of the 6405 women, 1483 women had a colposcopic biopsy and 33.2% (492/1483) were positive for HPV DNA. Twenty-one percent of women with a normal diagnosis (238/1095) had HPV infection, a statistically significantly lower prevalence than in women with cervical lesions, including those with cervical intraepithelial neoplasia (68.8% in CIN1, 66.7% in CIN2, and 76.5% in CIN3) or with cervical cancer (94.1%). The correlation coefficient between viral load and cervical lesion severity was 0.134, which was not statistically significant (P = 0.075). Viral load values in women with CINs and cervical cancer were calculated, and no significant differences were identified.</p><p><b>CONCLUSIONS</b>The prevalence of high-risk HPV infection among women attending hospitals for health-examination in Shanghai is similar to the worldwide rate. HPV viral load can distinguish cervical lesions from normal individuals but cannot adequately predict the severity of cervical lesions.</p>

Application of transitional problem-based learning in teaching of Department of Gynecology and Obstetrics / 上海第二医科大学学报

0.05).But transitional PBL had much priority in enhancing students' learning interests. Conclusion The applicational of transitional PBL requires to be further deepened and improved in the realm of medical education.

Assessment and direction of Objective Structured Clinical Examination on clinical practice in Department of Obstetrics and Gynecology / 上海第二医科大学学报

Objective To analyze the results of the Objective Structured Clinical Examination(OSCE) of medical interns in Department of Gynecology and Obstetrics,and to assess the role of OSCE in clinical teaching and practice. MethodsAtolal of 104 medical interns of five-year education program in 2002 and seven-year education program in 2003 in School of Medicine had taken part in OSCE of gynecology and obstetrics.The OSCE consisted of six stations: gynecologic examination,obstetric examination,oral test,interrogation of standardized-patients(SP),drawing partogram,and non-stress test(NST) explanation.After gathering the data of each station,the software of SPSS 11.0 was used to make statistical analysis. Results The median scores were as follows: 92.0 for gynecologic examination,91.0 for obstetric examination,83.5 for oral test,80.0 for interrogation of SP,80.0 for drawing partogram,and 70.0 for NST explanation.There was no significant impact of familiarity to OSCE on the results of the test.The results showed that medical interns did good job in basic performance,but lack of clinical practice skills in some complicated practice of gynecology and obstetrics.Conclusion The grading system and stations setup of OSCE in Department of Gynecology and Obstetrics in Shanghai Sixth People's Hospital show objectivity and equity.The OSCE can be widely applied in the after-department examination and even graduation examination.

Primary percutaneous coronary intervention in patients with acute myocardial infarction induced by left main artery occlusion or severe stenosis / 中华心血管病杂志

<p><b>OBJECTIVE</b>The effects of primary percutaneous coronary intervention (PCI) in patients with acute myocardial infarction (AMI) induced by left main (LM) artery occlusion were analyzed retrospectively in this study.</p><p><b>METHODS</b>A total of 1343 consecutive AMI patients who underwent primary PCI between January 1995 and December 2004 were retrospectively studied.</p><p><b>RESULTS</b>LM occlusion or severe stenosis were found in 11 patients [all male, mean age (56.4 +/- 9.2) years (range 43-70 years)], cardiogenic shock was overt in 6 patients. Primary PCI were performed under the assistance of intra-aortic balloon pump (IABP) in these patients [8 stent implantation, 3 balloon dilation and 2 necessitating emergency CABG after balloon dilation]. In-hospital mortality was 45.5% (5/11). Three-month follow-up were made in all survivals (6/11). Analysis showed good collateral circulation flow from right coronary artery to left coronary artery was existed in all survival cases before PCI.</p><p><b>CONCLUSION</b>Prognosis of AMI patients with LM artery obstruction or severe stenosis was poor. Patients with pre-existed collateral circulation before primary PCI and IABP had a better clinical outcomes.</p>

Construction of eukaryotic expression carrier of recombinant pcDNA3.1-hBMP-7 and transfection into bone marrow stromal cells of rabbit / 中国矫形外科杂志

[Objective]To construct arecombinant eukaryotic expression plasmid carrying human BMP-7 gene which was transfected into bone marrow stromal cells(BMSCs) in vitro and expressed.[Method]Clone human BMP-7 cDNA from a Chinese woman placenta was recombinanted with plasmid pcDNA3.1,to construct eukaryotic expression carrier of recombinaut pcDNA3.1-hBMP-7.The BMSCs were isolated from rabbit bone marrow and cultured in vitro.They were divided into three groups: pcDNA3.1-hBMP-7 transduced group;pcDNA3.1 transduced group;untransduced group.The expression of hBMP-7 was detected by RT-PCR,Immuneohistochemistry.ALP,Collogen,Osteocalcin production were detected.[Result]The pcDNA3.1-hBMP-7 transduced BMSCs expressed hBMP-7 at both mRNA and protein levels.ALP activity was detected in pcDNA3.1-hBMP-7 transduced cells from day 2 to day 10,peaking on day 8.Collogen,osteocalcin production were elevated significantly too(P

Cervical Regeneration Outcome after Loop Electrosurgical Excision Procedure for Management of Cervical Lesions / 上海第二医科大学学报

Objective To observe the cervical regeneration outcome after different loop electrosurgical excision procedures(LEEP) for the management of cervical lesions.Methods A total of 209 patients with cervical lesions including cervical epithelial neoplasia,cervical HPV infection,cervical polyp and condyloma,and severe cervicitis were performed LEEP in our hospital.The types of LEEP included shallow ring excision,deep ring excision,LEEP conization,and that similar to cold-knife conization.The width and depth of removed cervical tissues were recorded,and the cervical regeneration was observed during the follow-up. Results Among the 209 cases,179(85.6%) were satisfactory cervical regeneration,24(11.5%) were little satisfactory cervical regeneration,and 6(2.9%) were unsatisfactory cervical regeneration.Shallow ring excision,deep ring excision and cone excision had higher satisfactory situation.Extroversion of cervical columnar epithelium was observed in 15 cases(7.2%) in little satisfactory cervical regeneration.Severe extroversion of cervical columnar epithelium of 3 cases occurred in unsatisfactory cervical regeneration.Besides,there were 2 case of cervical shortening and 1 case of severe erythema in unsatisfactory cervical regenerations. Conclusion Although having such complications as extroversion of cervical columnar epithelium,cervical shortening and erythema,LEEP performs a high satisfactory cervical regeneration after management of cervical lesions.It is in great need to analyze the condition of different patients in managing cervical lesions by LEEP.

Correlation between high-risk human papillomavirus viral load and severity of cervical lesion / 上海第二医科大学学报

Objective To explore the correlation between high-risk human papillomavirus(hr-HPV) viral load and severity of cervical lesion. Methods One thousand eight hundred and six women undergoing both hr-HPV DNA test by hybrid capture Ⅱ(HCⅡ) and colposcopic biopsy for histologic results were enrolled in this study.Correlation between hr-HPV viral load and pathological findings was investigated. Results Of 1 806 cases,641(35.5%) patients were positive for HPV DNA.23.2%(301/1299) of women with normal diagnosis had HPV infection,significantly lower than cervical lesion including cervical intraepithelial neoplasia(CIN) and cervical cancer(P=0.000).Associations(odds ratio) among severity of cervical lesion and viral load were calculated.The significantly increased risk only existed between cervical cancer and CIN1 on high viral load(odds ratio,8.5;95% confidence interval,1.0-71.4;P=0.049).Furthermore,viral load values in CIN1,2,3 and cervical cancer were calculated and median analysis revealed non-significant difference(P=0.712). Conclusion The hr-HPV viral load can distinguish cervical lesion as CIN and cervical cancer from normal one,while the prediction of the severity of cervical lesion may be inadequate and need further investigations.

Electrocolposcopic and thinprep cytologic test in diagnosis of subclinical human papillomavirus infection and cervical intraepithelial neoplasia / 上海第二医科大学学报

Objective To investigate the diagnostic value of thinprep cytologic test(TCT) and electronic colposcope(EC) examination in patients with subclinical human papillomavirus(HPV) infection(SPI) and cervical intraepithelial neoplasia(CIN),and explore its concordance with pathologic diagnosis. Methods A total of 1 125 females were examined with TCT,744 of whom diagnosed with abnormality by TCT or suspect of cervical lesions were examined with EC,and multiple punch biopsies were performed in 706 of those with abnomal EC images and suspected diseases. ResultsThe sensitivity of TCT,EC examination and the combined examination of TCT and EC for SPI and CIN were 88.74%,88.79% and 90.63%,respectively,the specificity 85.44%,80.38% and 96.41%,respectively,the positive predictive value 74.06%,68.90% and 91.10%,respectively,and the negative predictive value 94.19%,93.61% and 96.21%,respectively.By the combination of the two examinations,the specificity and positive predictive value were significantly increased(P

Arthroscopic treatment of developmental dislocation of the hips in infants / 中国矫形外科杂志

0.05).[Conclusion]The factors causing reductions should be removed arthroscopically.Arthrocopy may be a useful micro-treatment method for DDH.