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Objective To quantitatively study the influence of changes in probe position on the quality control test results of dental panoramic radiography and to provide a reference for analyzing the sources of deviations in quality control test results. Methods Eight different models of dental panoramic X-ray machines were selected for this study. The film analysis method was used to determine the position of the central axis of the main beam on the image detector. The position of the probe was accurately controlled through an auxiliary moving device. The tube voltage, radiation output, and half-value layer of the useful beam were measured for positions at the center of the beam; 1 cm upward, downward, left, and right from the center of the beam; and 2 cm upward, downward, left, and right from the center of the beam. Results The tube voltage, radiation output, and half-value layer had a maximum value at the center of the beam, with a decrease in the value as the position deviated from the center. There were significant differences in the probe position sensitivity between different models of dental panoramic radiography equipment. A 2 cm deviation in the probe position resulted in an impact on the measured tube voltage of less than 5.3 kV (5.8%) for less sensitive equipment. A 2 mm deviation in the probe position resulted in an impact on the measured tube voltage of less than 5.4 kV (6.0%) for sensitive equipment. Conclusion The probe position can lead to deviation in the quality control test results of dental panoramic photography. Therefore, determining the position of the central axis of the main beam on the image detector for accurate positioning of the probe is crucial for quality control testing.
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Objective:To explore the value of gonadotropin-releasing hormone (GnRH) antagonist in prostate cancer management.Methods:We retrospectively analyzed the data of 92 consecutive hormonal sensitive prostate cancer (HSPC) patients treated with GnRH antagonist from Jan 2019 to March 2022 in Fudan University Shanghai Cancer Center. The median (IQR) age at diagnosis was 70(65-76)years old. Median(IQR) serum prostate-specific antigen (PSA) level before treatment was 98.30 (32.50-436.75)ng/ml. The median (IQR) testosterone level was 12.30(1.51-18.44)nmol/L. Twenty-six(28.3%)cases were in M 0 stage, while 66(71.7%) were in M 1 stage at diagnosis. There were 67(72.8%)cases in ≥T 3 stage, and 54(58.7%)cases in N 1 stage.The Gleason score of 80(87.0%)cases was ≥8.The second generation androgen inhibitor was used in 58(63.0%)cases, and 21(22.8%)cases had specific gene mutation. Patients received a subcutaneously 240mg Degarelix in the first 28 days and 80 mg Degarelix following every 28 days. The pre-injection and 3 months post injection PSA and testosterone (T) level were collected. According to the proportion of patients with the largest decrease in PSA, the patients were divided into high response group (PSA decrease ≥99% after 3 months of use of Degarelix) and low response group (PSA decrease <99% after 3 months of use of Degarelix). Univariate and multivariate logistic analysis were used to analyze the risk factors affecting the treatment response of Degarelix. Results:Among the 92 prostate cancer patients, after 3 months Degarelix treatment, the median PSA value decreased to 0.64ng/ ml ( P <0.001), and the median testosterone value decreased to 0.45nmol/L ( P <0.001). After treatment, there were 48 cases in the high reaction group and 44 cases in the low reaction group. Before treatment, the median PSA in the high-response group was 100.00(67.11-444.25) ng/ml, higher than 88.50 (9.91-582.25) ng/ml in the low-response group, but not statistically significant ( P=0.077). The median testosterone level in the high response group was 13.82 (7.53-19.43) nmol/L, which was significantly higher than that in the low response group [4.61 (0.75-16.12) nmol/L, P =0.030]. After treatment, the median PSA in the high-response group was 0.22 (0.09-0.82) ng/ml, significantly lower than that in the low-response group [3.22 (0.19-15.88) ng/ ml, P<0.001]. The median testosterone value of the high reaction group was 0.40 (0.09-0.80) nmol/L and that of the low reaction group was 0.45 (0.02-0.65) nmol/L, which showed no significant difference ( P =0.826), and both reached the level of castration (<1.7nmol/L). Univariate analysis showed that age ≤ 65 years old was a good prognostic factor ( OR=0.333, 95% CI 0.119-0.810, P =0.017); T stage ( P =0.540), N stage ( P =0.363), M stage ( P =0.660), Gleason score ( P =0.834), application of second-generation antiandrogens ( P=0.238) and gene mutation ( P =0.525) were not related to Degarelix hyperresponsiveness. In multivariate analysis, age was the only independent favorite prognostic factors( OR=0.913, 95% CI 0.847-0.983, P=0.016). Conclusions:In the real world, GnRH antagonists significantly reduced the levels of testosterone and PSA in HSPC patients after 3 months of treatment regardless of TNM stage, Gleason score, and the second generation androgen inhibitor using.
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Aiming at the problems of resource allocation, cost control, homogenization management of medical and nursing quality and so on in a hospital with multi-campuses, People′s Hospital of Ningxia Hui Autonomous Region explored an integrated governance system. It incorporated a series of aspects, such as the establishment of Internet hospital platform using payment and settlement as the link, the construction of operation and management mode for integrating information of multiple branches, the completion of " one hospital, multiple branches" organizational structure and integrated operation system, the innovation of personnel and post compensation system in line with features of medical industry, the implementation of new service mode of diagnosis teams and inpatient wards, the execution of budget management and cost accounting control, and the establishment of integrated online and offline epidemic prevention and control system for the joint prevention and control. These practices achieved good effects that quality and efficiency of medical services were greatly improved, cost of medical services was effectively controlled, and the efficiency of hospital operation and management were enhanced. It provided valuable experience for the integrated management of public hospitals with multi-campuses.
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Objective:To investigate the clinical effect of 90Sr application on superficial hemangioma in hair area and its effect on the volume of hair. Methods:A total of 136 pediatric patients (55 males, 81 females, 1-30 months old; 136 lesions) with head hemangioma in the First Affiliated Hospital of Guangxi Medical University between February 2018 and October 2019 were enrolled. They were divided into 3 groups according to the hair density of tumor sites. Group A ( n=63, 3(2, 6) months old, male/female=27/36): the hair in tumor sites was as thick as the surrounding hair. Group B ( n=40, 3(2, 5) months old, male/female=17/23): the hair in tumor sites was thinner than the surrounding area. Group C ( n=33, 3(2, 6) months old, male/female=11/22): there was no hair growth in the tumor sites. All groups were treated with 90Sr application, and the total absorbed dose of each course was 10-30 Gy, which was divided into 8 times. Three to four months after the treatment, the efficacy and adverse reactions were evaluated and the volume of hair was divided into 3 grades according to the hair density of the tumor sites: flourishing, good growth and no growth. If the clinical effect was unsatisfied, a second course of treatment was conducted. Kruskal-Wallis rank sum test or χ 2 test was used for data analysis. Results:The differences of age ( H=0.01), gender ( χ 2=0.92) among group A, group B and group C were not significant (both P>0.05). The total recovery rates of 3 groups after two-course treatment were 88.9%(56/63), 95.0%(38/40) and 93.9%(31/33) respectively ( χ 2=1.49, P>0.05). Besides, the incidences of adverse reactions were 6.3%(4/63), 7.5%(3/40) and 9.1%(3/33) respectively ( χ 2=0.24, P>0.05). Three to four months after treatment, the hair on tumor sites in group A and B was rated as flourishing, 28 children in group C were rated as flourishing, 5 children were rated as good growth, and none of the children showed no growth. Conclusions:The 90Sr application has a good treatment effect on the small superficial hemangioma in the hair area of infants, and the amount of hair in the affected area can be restored to normal after treatment. This treatment is worthy of clinical application.
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Cutaneous hemangioma is a kind of benign skin vascular tumor caused by congenital abnormal vascular development. The rays emitted by 90Sr has a good effect on it. Meanwhile, 90Sr application is easy to operate, effective, with less side effects and painless. It is a method worthy of promotion in the treatment of skin hemangioma. This article reviews the application of 90Sr application in cutaneous hemangioma treatment.
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Objective To probe into the feasibility and applicability of the foodborne food risk monitoring and sentinel hospital foodborne disease surveillance on the Salmonella serotype identification by liquid phase suspension array. Methods The serotyping of Salmonella isolates was performed by traditional glass agglutination test. Meanwhile, the liquid phase suspension array was operated to analyze the antigen O, H and AT for classification identification. Results From 2012 to 2019, a total of 215 strains of Salmonella were collected divided into 38 serotypes, 96% of them could be analyzed by SSA kit. The results of xMAP were in accordance with the traditional agglutination. 8 of the 11 strains which cannot be checked out by glass agglutination seemed to be easy detected by liquid phase suspension array. Conclusion The liquid phase suspension array has advantages of high throughput, high sensitivity and high specificity. It is able to detect the Salmonella serotype rapidly during a short time. Compared with the traditional serum agglutination method, the liquid phase suspension array has obvious advantages in detection time. It can be useful and important in the break out of foodborne disease caused by Salmonella spp.
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Objective To analyze serotype distribution, drug resistance, quinolone resistance gene carrying status and genetic relationship of foodborne Salmonella and human Salmonella isolates in Changzhou from 2012 to 2018, to provide scientific basis for the prevention and control of Salmonella. Methods The serum type was identified by serum agglutination and liquid chip. The antibiotic sensitivity was determined by micro broth dilution method. The quinolone antibiotic resistance gene was determined by gene sequencing method. The multilocus sequence typing ( MLST ) typing was performed on quinolone-resistant Salmonella, and the genetic relationship was analyzed by BioNumerics 8.0. Results A total of 10 and 36 serotypes were detected in 46 foodborne Salmonella strains and 152 human Salmonella strains, respectively. The dominant serotypes were Indiana Salmonella and Salmonella typhimurium. Erythromycin resistance rate was the highest in both Salmonella strains, and the proportion of multidrug-resistant bacteria was 93.47 % ( 43 / 46 ) and 80.92 % ( 123 / 152 ), respectively. 38 strains of quinolone-resistant foodborne Salmonella GyrA subunit mainly occurred double mutations Asp87Asn, Ser83Phe, ParC subunit mainly occurred single mutation Ser80Arg, 119 strains of quinolone-resistant human Salmonella qnrS gene detection rate was higher, reached 68.1 % ( 81 / 119 ) ; The dominant ST types of quinolone-resistant Salmonella from two sources were ST17 and ST19, respectively. Conclusions The antibiotic sensitivity of the two Salmonella resistant strains from Changzhou was the same ; Synergistic drug resistance, but both quinolone resistance genemutations and carry inconsistent ; The ST type distribution of quinolone resistant strains isalso inconsistent, and the genetic relationship is far. It is suggested that the probability of Salmonella resistant bacteria infection caused by food transmission in our region is small, and the treatment of the two should be differentiated.
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Objective:To investigate the current situation of preoperative enema in patients with pelvic or acetabular fracture and how orthopedists think about enema as a preoperative preparation so as to provide clinical guidance.Methods:In a cross-sectional survey conducted in September 2019 in the form of Wechat Questionnaire Star, a questionnaire was sent to 1,000 orthopedists all over the country. The items surveyed included the professional title and the hospital level of the participants. The questions asked included: 1. Will enema be performed for a patient with pelvic or acetabular fracture before surgery? 2. If enema is given to a patient before surgery, what method will you choose? 3. What is your purpose of preoperative enema for patients? 4. What are your reasons for not giving a patient enema before surgery? Stratified analysis was conducted by the hospital levels of the participants.Results:A total of 704 orthopedists from all over the country completed the present survey. The questionnaires finished came from 506 (71.88%, 506/704) tertiary hospitals and 198 (28.13%, 198/704) secondary hospitals. The survey showed that 41.90% of the orthopedists (295/704) would give their patients enema before surgery, 26.99% (190/704) would not and 31.11% (219/704) would not necessarily. The main purpose of enema in the orthopedists who advocated enema was to eliminate intestinal gas so as to make intraoperative fluoroscopy more clearly (77.04%, 396/514); the main reason against this measure in those who did not support enema was that it would increase the pain of patients (76.84%, 146/190). Compared with the tertiary hospitals, a higher proportion of orthopedists in the secondary hospitals would perform preoperative enema and choose mechanical enema. Moreover, a higher proportion of orthopedists in the secondary hospitals believed that enema could reduce complications and make intraoperative fluoroscopy clearer.Conclusion:At present, a number of orthopedists in China, especially those in a tertiary hospital, do not give their patients enema before surgery of pelvic or acetabular fracture.
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The American Academy of Ophthalmology (AAO) published the Adult Strabismus Preferred Practice Pattern(PPP) in September 2019.The PPP provides an authoritative guidance for the clinical diagnosis and treatment of adult strabismus based on the best clinical evidence.This PPP of version 2019 incorporates recent advances in the field of adult strabismus into the guide, and comprehensively describes and updates the definition, epidemiology, classification, diagnosis and treatment of adult strabismus.This article introduces and interprets the main content of the guide.
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Objectives@#To explore acute meningitis and encephalitis syndrome (AMES) surveillance in 4 China prefectures, to understand the epidemiological features and disease burden of neisseria meningitides (Nm) meningitis, streptococcus pneumoniae (Sp) meningitis, haemophilus influenza type b (Hib) meningitis and Japanese encephalitis and provide evidence for related disease prevention and control.@*Methods@#AMES surveillance were conducted in Jinan, Shandong Province and Yichang, Hubei Province in September 2006, and in 13 districts of Shijiazhuang, Hebei Province and Guigang City, Guangxi Zhuang Autonomous Region in April 2007. Six hospitals in each city were selected as monitoring pilot hospitals to carry out reports of suspected cases of acute meningitis and encephalitis, case investigation, blood specimens and cerebrospinal fluid specimen collection, anti-JEV IgM antibody enzyme-linked immunosorbent assay, Nm, Sp and Hib culture and polymerase chain reaction detection, etc. According to the age group, the incidence of bacterial meningitis and Japanese encephalitis in local residents <20 years old was estimated.@*Results@#From 2006 to 2013, a total of 19 423 surveillance cases were reported in four cities, of which 11 071 (56.99%) were reported in the pilot hospitals. Of the 11 071 cases, 5 315 were tested for bacteriology and 9 180 were tested for anti-JEV IgM antibodies. Among the bacteriological tests, 176 cases were positive, including 75 cases of Nm positive, 91 cases of Sp positive and 10 cases of Hib positive. The incidence of three bacterial meningitis is estimated for people under 20 years old, with estimated incidence of Nm, Sp and Hib meningitis in children <5 years old was 0.46/100 000-0.71/100 000, 0.34/100 000-0.83/100 000 and 0.32/100 000-0.57/100 000 respectively; the estimated incidence of Nm and Sp meningitis in children aged 5-9 years was 0.59/100 000-1.14/100 000 and 0.50/100 000-1.66/100 000 respectively. In 732 cases of positive JE cases, the positive detection rates of <5 years old, 40-49 years old and ≥50 years old were 9.51% (95/999), 28.09% (66/235) and 33.85% (130/384), respectively. The estimated annual incidence rate of JE was 0.12/100 000-0.79/100 000.ratio of cases 1.19∶1. Most of cases (27.30%) were children and adolescents aged 5-14 years and those (26.84%) aged over 45 year.@*Conclusion@#The study found that primary and secondary school students are the key population of Nm meningitis, suggesting that it is necessary to explore the enhanced immunization study of meningococcal vaccine in this population; Sp has the possibility of occurrence in all age groups; <5 years old children are the main population of Hib meningitis.
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Objective@#To analyze the characteristics of epidemiology and neisseria meningitidis (Nm) serogroups distribution for meningococcal meningitis (MM) cases in China from 2015 to 2017.@*Methods@#The data of MM cases were collected from National Notifiable Diseases Registry System (NNDRS) and case-based MM surveillance system (MMSS) from 2015 to 2017; Demographic data are from the National Bureau of statistics. Inclusion criteria: the date of onset was January 1, 2015 to December 31, 2017, the status of infectious disease report card was "final examination card", the cases are classified as "laboratory confirmed cases" and "clinical diagnostic cases", and the card data information of disease name was "Meningococcal meningitis". According to the Diagnostic Criteria for Meningococcal meningitis (WS295-2008), laboratory confirm was made for reported cases or clinically diagnosed cases of meningococcal meningitis.@*Results@#From 2015 to 2017, a total of 325 MM cases were reported in China, with an average annual incidence of 0.007 9 per 100 000 population. And 148 cases were laboratory confirmed. There were 3, 15, 12, 5, 2 and 18 provinces which were reported serogroup A, B, C, W, Y, Others and NG MM Cases, respectively. Except for Tibet and Hainan, other provinces have reported group A cases; The provinces reporting group B, C, W and Y cases increased by 9, 11, 13 and 2 provinces in 2007, respectively compared with 2005. Serogroup B was the primary reason causing the cases of <1 year old and 1-6 years old children; and in this age group, 51.43% (18 cases) and 68.18% (15 cases) of group B were accounted for in laboratory confirmed, respectively; Serogroup C, others and NG was the major reason in the cases of 7-12 and >12 years old students and adults: 33.33% (5 cases) and 26.32% (20 cases) of group C were accounted for in laboratory confirmed respectively, then 26.67% (4 cases) and 34.21% (26 cases) of group others and NG were accounted for respectively; 2 cases of serogroup Y were all >12 years old.@*Conclusion@#The epidemic serogroup of Nm caused MM cases showed a diversifying trend. To develop and provide new vaccines for serogroup B and other bacteria groups should be one of the important tasks for MM control and prevention in the future.
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Objective To study the diagnostic value of hepatobiliary imaging at 6 h post-injection of 99 Tcm-diethyl iminodiacetic acid ( EHIDA) ( HI-6) combined with serum gamma-glutamyltransferase (γ-GT)/total bile acid ( TBA) ratio ( combined diagnosis) in children with congenital extrahepatic biliary atre-sia (CEBA). Methods Clinical data of 194 pediatric patients (118 males, 76 females, mean 70.9 d) with jaundice from May 2013 to March 2017 were retrospectively analyzed. All patients underwent surgery. According to the operation and pathologic diagnosis, patients were divided into CEBA group ( 113 cases) , infant hepatitis syndrome ( IHS) group ( 81 cases) . Serumγ-GT, TBA and the ratio ofγ-GT/TBA of the 2 groups were compared. Receiver operating characteristic ( ROC) curves were drawn to determine threshold values of the 3 parameters for diagnosis of CEBA. Patients also underwent 99 Tcm-EHIDA hepatobiliary dy-namic imaging. The diagnostic efficacies of HI-6, γ-GT, γ-GT/TBA ratio, and combined diagnosis were compared. Two-sample t test and χ2 test were used to analyze the data. Results There were significant differences in γ-GT/TBA ratio,γ-GT and TBA content between the 2 groups (t values:8.217, 9.298 and 2.426, all P<0.05). The serumγ-GT andγ-GT/TBA ratio had high diagnostic accuracies (area under ROC curve ( AUC):0.884 and 0.863) . The sensitivity, specificity, accuracy and positive predictive value of HI-6 in the diagnosis of CEBA were 91.15％(103/113), 39.51％(32/81), 69.59％(135/194) and 67.76％(103/152);the parameters of γ-GT were 69.91％(79/113), 93.83％(76/81), 79.90％(155/194) and 94.05％(79/84);and those ofγ-GT/TBA ratio were 71.68％(81/113), 92.59％(75/81), 80.41％(156/194) and 93.10％(81/87). The sensitivity of HI-6 was significantly higher than that of γ-GT and GGT/TBA ratio (χ2 values:16.256 and 14.154, both P<0.05) , but the specificity, accuracy and positive predic-tive value were significantly lower than those ofγ-GT/TBA ratio (χ2 values:50.899, 6.062 and 20.054, all P<0.05). The specificity, accuracy and positive predictive value of the combined diagnosis were 95.06％(77/81), 92.78％(180/194) and 96.26％(103/107) respectively, which were significantly higher than those of HI-6 (χ2 values:56.786, 34.168 and 31.335, all P<0.05) . Conclusions HI-6 combined withγ-GT/TBA ratio can significantly improve the diagnostic specificity and accuracy for CEBA. This method is more time-saving, simple and reliable, and has important clinical value.
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Objective To study the value of MRI in the diagnosis of diabetic foot(DF)ulcer.Methods MRI data of 29 cases with DF ulcer were analyzed retrospectively,among which 8 showed neuropathic osteoarthropathy (Charcot’s joint)on X-ray radiographs. To analyze the correlation of MRI features and MRA results of DF ulcer patients.Results All patients displayed with soft tissue cellulitis,and 1 6 cases suffered with osteomyelitis as well.8 cases were Charcot’s joint,and 2 cases were confirmed by biopsy for false positive osteomyelitis.8 cases of MRA could not meet the diagnostic requirements due to the contamination of the inferior genicular vein.There were no obvious difference among the incidence of Charcot’s joint,sinus,abscess and tenosynovitis between lower extremity artery stenosis and not(P=0.06;χ2=0.07, P=0.79;χ2=2.15,P=0.14;χ2=2.29,P=0.13),but the difference of incidence of osteomyelitis was obvious(χ2=4.88,P=0.03). Conclusion MRI can display osteomyelitis,neuropathic osteoarthropathy,cellulitis of the tissue,sinus,abscess,tenosynovitis and lower extremities arterial disease (LEAD)of the DF ulcer patients,and the incidence of osteomyelitis was associated with LEAD.
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Background:In the pathogenesis of chronic gastritis,the changes of biological factors can affect the physiological barrier of gastric mucosa,increase the risk of injury of intercellular junctions,leading to disruption of mucosal barrier. Aims:To investigate the expressions of occludin and zonula occluden-1 (ZO-1)in chronic gastritis and their significance. Methods:A total of 82 patients with chronic gastritis from October 2014 to October 2017 at the First People's Hospital of Xiaochang were enrolled and divided into chronic non-atrophic gastritis (CNAG)group and chronic atrophic gastritis (CAG)group according to the endoscopic biopsy pathology. Forty healthy subjects were served as normal controls. Expressions of occludin and ZO-1 were examined by immunohistochemistry. Patients positive for Helicobacter pylori (Hp) infection received eradication therapy,and expressions of occludin and ZO-1 were reexamined after Hp eradication. Results:The positivity rates of occludin and ZO-1 proteins in CNAG and CAG groups were significantly lower than those in normal control group (P＜0.05). The positivity rates of occludin and ZO-1 proteins in CNAG group were significantly higher than those in CAG group (P＜0.05). The positivity rates of occludin and ZO-1 proteins in Hp-positive CNAG patients were significantly lower than those in Hp-negative CNAG patients (P＜0.05). The positivity rate of ZO-1 protein in Hp-positive CAG patients was significantly lower than that in Hp-negative CAG patients (P＜0.05). Expressions of occludin and ZO-1 proteins showed a linear trend correlation with activity of gastric inflammation (P ＜0.05);their expressions decreased significantly with the increase in activity of inflammation. The positivity rates of occludin and ZO-1 proteins in CNAG patients increased significantly after Hp eradication (P＜0.05). Conclusions:Expressions of occludin and ZO-1 are decreased in chronic gastritis,especially in CAG,and are correlated with Hp infection and activity of gastric inflammation.
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Objective To explore the compound compatibility regulation of oral traditional Chinese medicines (TCM) for the prevention and treatment of infantile repeated respiratory infection.Methods The oral TCM compound literatures for the prevention and treatment of infantile repeated respiratory infection were collected from four databases,including China Biology Medicine disc,CNKI,VIP Periodical and Wanfanf Data.The retrieval time was from January 2006 to July 2006.Then the TCM oral compound prescriptions meeting the requirements were obtained by the literature arrangement and performed the terms standardized processing for extracting the information and establishing Excel table.Then the Kaiyuan software package R i386 3.3.0 was used to conduct the drug frequency,association rules analysis and clustering analysis.Results A total of 311 prescriptions were screened out and 208 kinds of traditional Chinese medicine were analyzed.It was found that the higher compatibility frequencies of TCM were atractylodes,radix glycyrrhizae,windproof,radix astragali,radix pseudostellariae,poria cocos,dried tangerine or orange peel,etc.;the strong association rules prompted that modified Yupinfeng Powder composed of core medicines such as astragalus,atractylodes and windproof was the basic formula for prevention and treatment of infantile repeated respiratory infection;the clusters analysis found some TCM societies such as emembranous Astragalus mongholicus-keel-oysters,Atractylodes-Poria cocos-licorice-Astragalus mongholicus-dangshen.Conclusion The drug frequency,association rules analysis and clustering analysis can reveal the compatibility rules of TCM prescriptions for preventing and treating infantile repeated respiratory to provide reference basis for optimizing the clinical prescription and improving the curative effect.
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Objective To compare the clinical effects of totally thoracoscopic surgery and conventional median thoracoto my surgery in the repair of atrial septal defect(ASD),so as to provide reference for the clinical choice of atrial septal defect repair.Methods 131 patients with ASD from January 2015 to November 2016 in the First Affiliated Hospital of Xinjiang Medical University were divided into two groups according to operation type:totally thoracoscopic group(58 cases),median thoracotomy group.The differences in operative time,cardiopulmonary bypass time(CPB),ventilator assist time,ICU stay time,postoperative hospital stay and other aspects were compared.Results There was no death and no serious complication in the two groups.There was no statistical difference between the two groups (P ＞ 0.05) in sex,weight,age,right atrial size and cardiac function.The time of thoracoscopic surgery [(3.6 ± 1.0) h vs.(2.6 ± 0.6) h] and the duration of CPB [(98.3 ± 35.8)min vs.(32.3 ± 16.1) min] were longer than those of median thoracotomy group (P ＜ 0.05).There was no statistical difference between two groups in the time of mechanical ventilation,ICU stay,postoperative drainage and postoperative hospital stay (P ＞ 0.05).Conclusion Although ASD repair of thoracoscopic surgery is difficult and the learning curve is long,but it can be said that the totally thoracoscopic ASD repair can achieve the same results as conventional median thoracotomy does,and it is effective and safe,and thoracoscopic surgery also has less trauma and cosmetic appearance,no bone structure damage,worthy of clinical promotion.
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Objective To investigate the inhibitory effects of high mobility group chromosomal protein N2 (HMGN2)on growth of human bladder cancer T24 cells and ectopic tumor growth of nude mice. Methods MTT and flow cytometry assay were conducted to detect cell growth of bladder epithelial cells(T24)cells in vitro. The transplantation tumor models in nude mice were constructed by injecting T24 cells in vivo. The para-tumorswere injected with PBS,HMGN2 protein and cisdichlorodiamineplatinum(DDP),respectively. Tumor volume and weight were calculated. The expression of cell proliferation-related proteins was detected by Western blot assay. Results MTT assay proved that HMGN2 could significantly inhibit the growth of T24 cells. Flow cytometry assay verified that HMGN2 could block T24 cells in S stage of the cell cycle. The average tumor volume and weight in the HMGN2 group and DDP positive control group were smaller than those in the PBS group(P<0.05,respectively), with the tumor inhibitory rate of 25% and 23%,respectively. The results of Westernblot showed that HMGN2 could decrease Bcl-2 expression and increase Bax expression in tumor. Conclusion HMGN2 has a significant antitumor effect on T24 cells and bladder carcinoma in nude mice,which may be associated with the induction of the apoptosis of carcinoma cells and the regulation of the cell cycle.
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Objective To analyse the factors influencing the death of patients with aortic dissection (Stanford type A arota dissection) who underwent urgent surgery.Methods The clinical data of 197 patients with aortic dissection (Stanford type A arota dissection) treated with urgent surgery from the First Affiliate Hosiptal of Xinjiang Medical University were retrospectively analyzed between January 2009 and June 2015 in order to determine the factors influencing the early-mortality.Results Of them,23 patietns dead.In univariant analysis,the rate of mortality was 11.68％.The following factors at admission were independetly associated with early-mortality:hypertension,coronary atherosclerotic heart disease,LVEF ≤ 50％,time consumed for CPB ≥ 180 min,time required for cross-clamping aorta ≥ 120 min,Cr ≥ 130 μmol/L,rethoracotomy for hemostasis (P ＜0.05).The preoperative renal failure (Cr≥130 μmol/L) and time consumed for cross-clamping aorta ≥ 120 min were strongly associated with the early-mortality based on the logistic regression analyses.Conclusions The risk of aortic dissection surgery is very high,and it is mondatory to carefully evaluate the patient' s general condition and the indications during peroperative period,and to take active measures to shorten the time of clamping aorta and total operation time in order to reduce the risk of operation and increase the survival rate of patients.
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Background The primary pathologic mechanism of posterior capsular opacification (PCO) is proliferation,migration and epithelial-mesenchymal transformation of residuary lens epithelial cells (LECs) following cataract surgery.Matrix metalloproteinases (MMPs) play a role during the migration of LECs.Researches showed that GM6001,a broad inhibitor of MMPs,can arrest the migration of LECs,but as specific inhibitors of MMPs,the efficacy and safety of MMP-2/9 inhibitor Ⅰ and Ⅱ on LECs migration remain unclear.Objective This study was to determine and compare the inhibitory efficacy among GM6001,MMP-2/9 inhibitor Ⅰ and Ⅱ on human LECs and search the clinical medication to prevent PCO.Methods Human LECs were cultured and passaged in vitro,and the cells of 3-4 generation were incubated in 6-well plates.Then the cells of 70％ confluent monolayer were cultured in DMEM without fetal bovine serum for 12 hours.GM6001,MMP-2/9 inhibitor Ⅰ and Ⅱ at different concentrations (0.25,0.50,1.00,2.00,4.00,8.00,16.00,32.00,64.00,128.00 μmol/L) were added into the culture medium for 24 hours separately,and regularly cultured cells served as the control group.A bare area was made by a 200 μl sterile spear on the cell layer,and the migrated distance and inhibitory rate were calculated.The second or third generation of cells were incubated in 96-well plates at a density of 5×105/ml (200 μl/well).GM6001 (128.00 μmol/L),MMP-2/9 inhibitor Ⅰ (64.00 μmol/L) and Ⅱ (32.00 μmol/L) were added into the culture medium for 24 hours,and the cell viability was assayed by using MTT assay.Results Cultured cells grew well with irregular arrangement and presented the polygon in shape.The migrated distance was gradually reduced as the increase of concentrations of GM6001,MMP-2/9 inhibitor Ⅰ and Ⅱ,showing significant differences among the various concentration groups (GM6001:F=248.647,P＜0.05;MMP-2/9 inhibitor Ⅰ:F=357.125,P＜0.05;MP2/9 inhibitor Ⅱ:F=396.374,P＜ 0.05).The cell migrated distance in the control group was set to 1,the relative migrated distances were 0.478 ± 0.091,0.294±0.088 and 0.191 ±0.081 in the GM6001 group,MMP-2/9 inhibitor Ⅰ group and MMP-2/9 inhibitor Ⅱ group at the concentrations of 32.00 μmol/L,respectively,showing a significant difference among the groups (F =116.031,P＜0.01),and cell migrated distance was obviously shorter in the MMP-2/9 inhibitor Ⅱ group than that in the GM6001 group or MMP-2/9 inhibitor Ⅰ group (all at P＜0.01).The A values were 0.607±0.016,0.567±0.015,0.583±0.010 and 0.595 ±0.0138 in the control group,GM6001 group (128.00 μmol/L),MMP-2/9 inhibitor Ⅰ group (64.00 μmol/L) and MMP-2/9 inhibitor Ⅱ group (32.00 μmol/L),respectively,without significant difference among the groups (F=1.403,P＞0.05).Conclusions GM6001,MMP-2/9 inhibitor Ⅰ and Ⅱ reduce the mobility of human LECs effectively but do not affect the viability of the cells in vitro.MMP-2/9 inhibitor Ⅱ appears to be most dominant in inhibiting migration of human LECs.