Objective To investigate the relationship between portal vein pressure and liver regeneration after 90% portal branch ligation in rats.Methods Forty-five male SD rats underwent 90% portal branch ligation (including 5 rats underwent sham operation),and then the changes of portal vein pressure and weight of unligated hepatic lobes were detected.The morphological changes of hepatocytes of the unligated hepatic lobes were observed under a light microscope.Proliferative cell nuclear antigen(PCNA)index was detected by immunohistochemistry,and hepatocyte apoptosis of the unligated hepatic lobes by TUNEL method.All data were analyzed by Pearson rank correlation analysis and t test.Results Thirty-eight out of 40 rats survived(95%).The ligated hepatic lobes diminished progressively,whereas the unligated hepatic lobes regenerated.Preoperative portal vein pressure was(9.1±1.8)cm H_2O(1 cm H_2O=0.098 kPa),and it was increased significantly shortly after the ligation and reached (15.8±2.7)cm H_2O 12 hours later(t=6.847,P＜0.05).The portal vein pressure decreased from(13.6±2.3)cm H_2O at day 1 to(9.3±2.0)cm H_2O at day 28.Preoperative positive PCNA index was 7%±3%,which was significantly lower than 14%±5%at postoperative 12 hours,21%±6%at day 3 and 26%±7%at day 5(t=9.129,P＜0.05),and it began to return to normal at day 5.Few apoptotic hepatoeytes were observed in preoperative liver tissue and unligated hepatic lobes.The expression of PCNA in unligated hepatic lobes and portal vein pressure had apositive correlation at postoperative day 1,3,5(r=0.913,0.896,0.908,P<0.05)and a negative correlation at postoperative day 14(r=-0.926,P<0.05).Conclusions The regeneration of hepatocytes in unligated hepatic lobes is activated after 90% portal branch ligation,and the regenerated liver compensates the weight loss of the ligated hepatic lobes.Liver is regenerated mainly by speeding hepatocyte proliferation rather than reducing hepatocyte apoptosis.Changes of portal vein pressure may play an important role in liver regeneration.

The paper reviewed the significance and methodology of building a hospital emergency response system, and recommended on coordinating hospital emergency response work. The practices to build emergency response norms include persistent improvement of hospital emergency response system,unifying hospital emergency pre-plan, scheduling emergency drills, training and assessment, performance appraisal, and quantified indicators. The paper also summarized such operation principles as system development, unified management, job division, standardized operation, and routine operations.

Objective To evaluate the effects of interferon therapy after curative surgical intervention on improving prognosis of patients with hepatitis C-related hepatocellular carcinoma (HCC).Methods We searched randomized clinical trials from 1990 to 2015 on interferon therapy after curative surgical intervention in patients with hepatitis C-related HCC from the Cochrane Library,the Cochrane Database of Systematic Reviews,MEDLINE and Embase.A Meta-analysis was carried out using Revman 5.Results There were 7 studies included in this research.The results showed that interferon therapy after curative surgical intervention in patients with hepatitis C-related HCC reduced the recurrence rate of HCC at 3 years (RR =0.84,95％ CI 0.73 ～0.97,P ＜0.05).The therapy could not improve the 3-year survival rate in these patients (RR =1.04,95％ CI 0.90 ～ 1.21,P ＞ 0.05).Stratified subgroup analyses showed interferon therapy after liver resection reduced the recurrence rate (RR =0.62,95 ％ CI 0.39 ～ 1.00,P =0.05).For patients with tumors less than 3 cm,interferon therapy reduced the recurrence rate (RR =0.82,95％ CI 0.69 ～ 0.98,P ＜ 0.05).Conclusion Interferon therapy after curative surgical intervention improved prognosis in patients with hepatitis C-related HCC.

Objective To study the effect of corrected TIMI frame count (CTFC) of infarction related artery on systolic function of infarct area of myocardium after primary percutaneous coronary intervention (PCI) in patients with acute myocardial infarction (AMI). Methods One hundred and six patients with AMI having undergone successful PCI in Cangzhou Central Hospital were selected, and they were divided into two groups (each, 53 cases). The standard of fast or slow flow was in accord to the CTFC of infarction related artery (IRA) measured soon after successful PCI. The patients with greater value of CTFC were enrolled in the slow flow group, while the patients with smaller such value were assigned in the fast flow group. At 6, 12, 24 and 48 hours after PCI, the venous plasma MB isoenzyme of creatine kinase (CK-MB) level was measured. And at 1 week, 1 month and 3 months after PCI, the left ventricular ejection fraction (LVEF) was measured by cardiac ultrasound, and the levels of radial strain (RS) and longitudinal strain (LS) of the infarct area were measured via speckle tracking imaging (STI). The differences in CTFC, CK-MB, RS and LS between the two groups were analyzed, and the correlations between the strains and CTFC, CK-MB were analyzed by Pearson linear correlation method. Results After successful PCI, the CK-MB of fast flow group was higher than that of the slow flow group at 6 hours. However, the CK-MB of slow flow group was higher than that of the fast flow group after 12 hours, appearing separate phenomenon, and the statistical significance occurred beginning from 24 hours after PCI (U/L, 24 hours:98.43±11.65 vs. 86.43±18.97, 48 hours:51.09±8.94 vs. 49.80±6.92, both P<0.05). CTFC in fast flow group was significantly lower than that of slow flow group (frame: 22.69±4.83 vs. 26.14±5.67, P < 0.01). After 3 months of follow-up, LVEF in fast flow group was higher than that of the slow flow group, but the difference had no significance (P > 0.05). RS and LS in fast flow group were higher than those in slow flow group, and the statistically significant difference appeared from 1 month after PCI (1 month RS:29.74±6.66 vs. 26.86±5.61, LS:-16.37±3.91 vs. -15.27±3.22, 3 months RS: 30.03±6.31 vs. 27.63±5.67, LS: -17.74±3.96 vs. -15.75±4.17, all P < 0.05). Pearson linear correlation showed:the strains (both RS and LS) and CK-MB had no significant relation (both P>0.05). Both RS and LS at 1 week, 1 month and 3 months were of significantly positive correlation with CTFC of each group (fast flow group:r value of CTFC and RS was respectively-0.526,-0.515,-0.532, r value of CTFC and LS was respectively-0.532,-0.541,-0.572;slow flow group:r value of CTFC and RS was respectively-0.691,-0.685,-0.702, r value of CTFC and LS was respectively-0.621,-0.584,-0.605, all P<0.01). Conclusion CTFC has some relationship with the recovery of the systolic function in area of infarct myocardium after PCI, and can be regarded as an important index to predict the long-term prognosis in patients with AMI.

The authors introduced,against the backdrop of the new round of accreditation,organization and practice of the hospital.In accordance with the five management elements of planning,organization,leadership,coordination and control,and the level management theory,the hospital divided,based on a top-down design and step-by-step implementation,the process into four stages of mobilization and deployment,study and training,self-assessment and rectification,supervised self-assessment and constant improvement.These efforts aim at exploring the key points and methodology of hospital accreditation,proposing such key points as the combination of the accreditation with building a long-term mechanism,that of theory with practice,that leadership with full staff involvement,that of top-down design with step-by-step implementation,that of training and rectification,that of self-assessment and supervision,and that of system management with implementation of provisions.This way the hospital accreditation may upgrade the hospital as a whole.

Objective: To investigate the present situation of health education on school myopia prevention and control in primary and middle schools in Beijing, so as to provide scientific basis and suggestions for effective implementation of health education on school myopia prevention and control. Methods: From November 6-17, 2023, a total of 551 school doctors and health care teachers from public primary and secondary schools in seven districts of Beijing were investigated by using stratified random cluster sampling method. The contents included basic information, the basic situation of school health work, and the status of myopia prevention and control in schools. The data was described by frequency and proportion. Chisquare test was used to analyze the influencing factors. Results: A total of 89.8% of the respondents were found in the school of offering health education courses about myopia prevention and control. Among these respondents, 54.5% were equipped with health education course material of professional myopia prevention and control, and the teachers were primarily class teachers (57.6%), health care teachers (45.5%), and physical education teachers (45.1%), and most of the classes were conducted once a month (33.7%) and once a semester (28.1%). A total of 95.6% of the subjects had health education activities about myopia prevention and control at their schools. The frequency of activities was once a month (38.5%) and once a semester (27.9%). There were statistically significant differences of the report rate in setting up health education courses on myopia prevention and control, and the frequency of activities in different areas and different types of schools (χ2=19.53, 13.15, 34.30, 20.32, P<0.05). Conclusions Health education on school myopia prevention and control in primary and middle schools in Beijing is supportive. But health education courses taught by professional teachers should pay attention to the norms of the course material to complete a certain amount of class time, and development of health education activities should be diversified, so as to effectively implement health education of myopia prevention and control at school.

BACKGROUND:Patients with degenerative cervical spondylosis often suffer from changed varicosity of the cervical spine,unbalanced neck-shoulder muscular strength,and descending power. OBJECTIVE:To probe into the correlation between sagittal curvature parameters and pain threshold for neck-shoulder muscles in degenerative cervical spondylosis. METHODS:Totally 50 patients with degenerative cervical spondylosis received treatment at the 3D Printed Outpatient Center of Shanghai Ninth People's Hospital,Shanghai Jiao Tong University School of Medicine from January 2022 to March 2023 were included in the study.After excluding the 10 patients of cervical lateral projection that failed to meet the measurement conditions,the cervical lateral projections were shot to measure the following iconography parameters:Borden value and C2-7 Cobb angle as well as pain thresholds on the midpoint of the superior trapezius muscle in bilateral bundles and at 1 cm beside the C5-6 interspike.The correlation between sagittal curvature parameters and pain threshold of neck-shoulder muscles in degenerative cervical spondylosis was analyzed. RESULTS AND CONCLUSION:(1)The Borden value of sagittal curvature showed a moderately positive correlation with the bundle pain threshold in the left upper trapezius muscle,the bundle pain threshold in the right upper trapezius muscle,and the pain threshold at the 1 cm of the left side beside the C5-6 interspike(r=0.498,P<0.01;r=0.448,P<0.05;r=0.405,P<0.05)and a weak positive correlation with the pain threshold at the 1 cm of the right side beside the C5-6 interspike(r=0.322,P<0.05).(2)The C2-7 Cobb angle showed a weak positive correlation with the left squared myalgia threshold(r=0.355,P<0.05),and there was no correlation with the pain threshold of the left trapezius muscle and the pain threshold at the 1 cm of both sides beside the C5-6 interspike.(3)There was a correlation between the pain threshold of the neck-shoulder muscles,and a high correlation between the pain threshold of the left and right muscles and the pain threshold within the left and right side muscles,indicating that the neck-shoulder muscles are consistent and may be related to the coordination of the neck-shoulder movements.

Objective:To investigate the current situation of emergency medical service (EMS) system and its effect on treatment of the acute stage and short- and long-term prognosis in patients with acute myocardial infarction in Hebei province.Methods:Totally 2 961 patients with acute myocardial infarction who were admitted to major tertiary and some representative secondary hospitals in Hebei province from January 2016 to December 2016 were collected. According to the pattern of arriving hospital, all the patients were divided into the EMS group and self-transport group. The general conditions, time from onset to treatment, treatment methods, in-hospital mortality rate and 3-year mortality rate were compared between the two groups.Results:Of the included 2 961 patients, 33.13% of them were transported through EMS and 66.87% of them by private transport. Patients with a history of hypertension and ST-segment elevation myocardial infarction were more likely to choose EMS, and the difference was statistically significant ( P<0.05). Moreover, patients in the EMS group were more likely to go to tertiary hospitals for treatment (88.58% vs 85.76%, P=0.033). The time from onset to treatment of the EMS group was significantly shorter than that of the self-transport group (160 min vs 185 min, P<0.01), and the proportion of patients in the EMS group from onset-to-door time in <3 h and 3-6 h was higher than that of the self-transport group (55.76% vs 49.14%, 21.41% vs 19.09%, P<0.01). Compared with the self-transport group, the EMS group has a higher rate of reperfusion therapy (67.48% vs 61.67%, P=0.002). Patients in the EMS group had a higher in-hospital mortality rate in the acute stage (7.03% vs 4.44%, P=0.003), but its 3-year mortality rate was lower than that of the self-transport group (17.31% vs 20.77%, P<0.05). Conclusions:EMS can shorten symptom-onset-to-arrival time, increase the rate of reperfusion therapy and improve long-term prognosis of patients with acute myocardial infarction.

Objective: To explore the effects of red LEDs on the proliferation and osteogenic differentiation of human stem cells from apical papilla (hSCAPs). Methods: hSCAPs were obtained by isolation, culture and flow cytometry in vitro and irradiated with 1, 3, 5, and 7 J/cm2 red LEDs. The proliferation of hSCAPs was detected using a CCK-8 assay. The osteogenic differentiation of hSCAPs was evaluated using alkaline phosphatase (ALP) staining, ALP activity assay and Alizarin red quantitative detection. The effect of 5 J/cm2 red LEDs on the expression levels of the ALP, Runx2, OCN, OPN and BSP genes and proteins was detected by RT-PCR and western blot, respectively. Results: Red LEDs at 1, 3, 5, and 7 J/cm2 promoted the proliferation of hSCAPs (P < 0.05). The effects of red LEDs with different light energies on the proliferation of hSCAPs were different at different time points (P < 0.05). On the 7th and 14th days after irradiation, red LEDs promoted the osteogenic differentiation of hSCAPs, and the effect of 5 J/cm2 red LEDs was the most obvious under osteogenic induction culture conditions (P<0.05). Red LEDs (5 J/cm2) promoted the expression of the ALP, Runx2, OCN, OPN and BSP genes and proteins (P < 0.05). Conclusion Red LEDs promoted the proliferation and osteogenic differentiation of hSCAPs.

Objective:To evaluate the clinical efficacy of different treatment methods for chronic pancreatitis based on M-ANNHEIM system.Methods:The retrospective cross-sectional study was conducted. The clinicopathological data of 177 patients with chronic pancreatitis from two medical centers between July 2008 and July 2018 were collected, including 95 in the Sichuan Provincial People′s Hospital and 82 in the West China Hospital of Sichuan University. There were 100 males and 77 females, aged (49±5)years, with a range from 29 to 72 years. The M-ANNHEIM system was used to decide clinical stages of chronic pancreatitis. Patients in different clinical stages received drug, endoscopic or surgical treatment. Observation indicators: (1) general data and follow-up of patients; (2) treatment of patients in asymptomatic stage; (3) treatment of patients in stage Ⅰ; (4)treatment of patients in stage Ⅱ; (5) treatment of patients in stage Ⅲ; (6) treatment of patients in stage Ⅳ; (7) aggravation and new-onset of diabetes; (8) complications. Follow-up using outpatient examination, telephone, mail, and Sojump was performed to collect data for M-ANNHEIM system up to December 2018. Measurement data with normal distribution were represented as Mean± SD, and comparison between groups was analyzed by the AVONA. Repeated measurement data were analyzed using repeated ANOVA. Count data were described as absolute numbers, and comparison between groups was conducted using the chi-square test. Results:(1) General data and follow-up of patients: there were 11, 72, 55, 31, and 8 patients with chronic pancreatitis classified as asymptomatic stage, stage Ⅰ, stage Ⅱ, stage Ⅲ, stage Ⅳ of M-ANNHEIM system before treatment. Of the 177 patients, 49, 49, and 79 patients underwent drug, endoscopic and surgical treatment, respectively. All the 177 patients were followed up for (2.4±0.5)years. (2) Treatment of patients in asymptomatic stage: 11 patients in asymptomatic stage underwent drug treatment. The M-ANNHEIM score was 1.91±0.21 before treatment, and 1.27±0.14, 1.73±0.19, 2.09±0.16 at 1 month, 12 months, 24 months after treatment, respectively. (3) Treatment of patients in stage Ⅰ: of the 72 patients in stage Ⅰ, 13 underwent drug treatment, 26 underwent endoscopic treatment, and 33 underwent surgical treatment. The M-ANNHEIM score of patients undergoing drug treatment was 8.11±1.05 before treatment, and 6.31±0.31, 7.69±0.24, 10.00±0.23 at 1 month, 12 months, 24 months after treatment, respectively. The M-ANNHEIM score of patients undergoing endoscopic treatment was 8.42±0.93 before treatment, and 5.13±0.25, 6.89±0.20, 8.27±0.24 at 1 month, 12 months, 24 months after treatment, respectively. The M-ANNHEIM score of patients undergoing surgical treatment was 8.13±0.77 before treatment, and 4.79±0.15, 5.42±0.22, 7.76±0.20 at 1 month, 12 months, 24 months after treatment, respectively. There was no significant difference in M-ANNHEIM score before treatment between patients receiving different treatments ( F=1.23, P>0.05). For patients in M-ANNHEIM stage Ⅰ, at 1 month after treatment, there was a significant difference in M-ANNHEIM score between patients receiving drug treatment and patients receiving endoscopic treatment, between patients receiving drug treatment and patients receiving surgical treatment ( F=2.94, 4.98, P<0.05); there was no significant difference in M-ANNHEIM score between patients receiving endoscopic treatment and patients receiving surgical treatment ( F=1.26, P>0.05). At 12 months after treatment, there was a significant difference in M-ANNHEIM score between patients receiving drug treatment and patients receiving endoscopic treatment, between patients receiving drug treatment and patients receiving surgical treatment, between patients receiving endoscopic treatment and patients receiving surgical treatment ( F=2.43, 5.99, 4.80, P<0.05). At 24 months after treatment, there was a significant difference in M-ANNHEIM score between patients receiving drug treatment and patients receiving endoscopic treatment, between patients receiving drug treatment and patients receiving surgical treatment ( F=4.61, 6.29, P<0.05); there was no significant difference in M-ANNHEIM score between patients receiving endoscopic treatment and patients receiving surgical treatment ( F=1.63, P>0.05). (4) Treatment of patients in stage Ⅱ: of the 55 patients in stage Ⅱ, 8 underwent drug treatment, 15 underwent endoscopic treatment, and 32 underwent surgical treatment. The M-ANNHEIM score of patients undergoing drug treatment was 12.61±1.16 before treatment, and 11.63±0.26, 12.57±0.30, 14.50±0.27 at 1 month, 12 months, 24 months after treatment, respectively. The above indicators of patients undergoing endoscopic treatment was 12.42±1.43, 8.47±0.24, 11.07±0.21, 11.93±0.30, respectively. The above indicators of patients undergoing surgical treatment was 12.53±1.22, 8.78±0.15, 9.94±0.21, 11.00±0.24, respectively. There was no significant difference in M-ANNHEIM score before treatment between patients receiving different treatments ( F=1.38, P>0.05). For patients in M-ANNHEIM stage Ⅱ, at 1 month after treatment, there was a significant difference in M-ANNHEIM score between patients receiving drug treatment and patients receiving endoscopic treatment, between patients receiving drug treatment and patients receiving surgical treatment ( F=8.37, 8.48, P<0.05); there was no significant difference in M-ANNHEIM score between patients receiving endoscopic treatment and patients receiving surgical treatment ( F=1.13, P>0.05). At 12 months after treatment, there was a significant difference in M-ANNHEIM score between patients receiving drug treatment and patients receiving endoscopic treatment, between patients receiving drug treatment and patients receiving surgical treatment, between patients receiving endoscopic treatment and patients receiving surgical treatment ( F=4.13, 8.48, 3.33, P<0.05). At 24 months after treatment, there was a significant difference in M-ANNHEIM score between patients receiving drug treatment and patients receiving endoscopic treatment, between patients receiving drug treatment and patients receiving surgical treatment, between patients receiving endoscopic treatment and patients receiving surgical treatment ( F=5.61, 6.83, 2.26, P<0.05). (5) Treatment of patients in stage Ⅲ: of the 31 patients in stage Ⅲ, 9 underwent drug treatment, 8 underwent endoscopic treatment, and 14 underwent surgical treatment. The M-ANNHEIM score of patients undergoing drug treatment was 17.25±0.89 before treatment, and 17.11±0.35, 18.44±0.41, 17.33±0.44 at 1 month, 12 months, 24 months after treatment, respectively. The above indicators of patients undergoing endoscopic treatment was 17.38±1.06, 15.00±0.53, 16.50±0.33, 16.88±0.44, respectively. The above indicators of patients undergoing surgical treatment was 17.63±1.06, 14.64±0.34, 16.00±0.35, 16.57±0.33, respectively. There was no significant difference in M-ANNHEIM score before treatment between patients receiving different treatments ( F=1.19, P>0.05). For patients in M-ANNHEIM stage Ⅲ, at 1 month after treatment, there was a significant difference in M-ANNHEIM score between patients receiving drug treatment and patients receiving endoscopic treatment, between patients receiving drug treatment and patients receiving surgical treatment ( F=3.37, 4.82, P<0.05); there was no significant difference in M-ANNHEIM score between patients receiving endoscopic treatment and patients receiving surgical treatment ( F=0.59, P>0.05). At 12 months after treatment, there was a significant difference in M-ANNHEIM score between patients receiving drug treatment and patients receiving endoscopic treatment, between patients receiving drug treatment and patients receiving surgical treatment ( F=3.63, 4.48, P<0.05); there was no significant difference in M-ANNHEIM score between patients receiving endoscopic treatment and patients receiving surgical treatment ( F=0.95, P>0.05). At 24 months after treatment, there was no significant difference in M-ANNHEIM score between patients receiving drug treatment and patients receiving endoscopic treatment, between patients receiving drug treatment and patients receiving surgical treatment, between patients receiving endoscopic treatment and patients receiving surgical treatment ( F=0.73, 1.41, 0.55, P>0.05). (6) Treatment of patients in stage Ⅳ: 8 patients in stage Ⅳ underwent drug treatment. The M-ANNHEIM score of patients was 17.94±0.59 before treatment, and 18.01±0.34, 17.54±0.19, 17.34±0.26, 17.88±0.43 at 1 month, 6 months, 12 months, 24 months after treatment, respectively. (7) Aggravation and new-onset of diabetes: of 49 patients undergoing endoscopic treatment, 17 had diabetes before treatment, 5 had aggravated diabetes and 11 had new-onset of diabetes after treatment. Of 79 patients undergoing surgical treatment, 31 had diabetes before treatment, 21 had aggravated diabetes and 7 had new-onset of diabetes after treatment. There were significant differences in the aggravation and new-onset of diabetes between the two groups ( χ2=2.07, 2.04, P<0.05). (8) Complications: 49 patients undergoing drug treatment had no treatment related complications. Of 49 patients undergoing endoscopic treatment, 4 patients with stent related complications were cured after replacing stent under endoscopy, 6 patients had acute pancreatitis, 2 had gastrointestinal bleeding including 1 patient was cured after endoscopic hemostasis, other patients with complications were improved after symptomatic and supportive treatment. Of 79 patients undergoing surgical treatment, 17 had pancreatic leakage (including 11 of biochemical leakage, 5 of grade B pancreatic leakage, and 1 of grade C pancreatic leakage), 3 had postoperative gastroparesis, 3 had intraabdominal infection, 1 had deep venous thrombosis, 2 had hemorrhage of which 1 combined with grade C pancreatic leakage was improved after open hemostasis and 1 was improved after interventional treatment, other patients with complications were improved after symptomatic and supportive treatment. Conclusions:For chronic pancreatitis, individualized treatment should be formulated according to the different stages. M-ANNHEIM score system can be used the evaluate clinical efficacies of drug treatment, endoscopic treatment, and surgical treatment.