BACKGROUND:Bone mesenchymal stem cells(BMSCs) can accelerate vascularization of myocardial cell,relieve myocardial remodeling,and improve heart function.However,whether its paracrine action can facilitate the differentiation of CD117+ cardiac stem cells(CSCs) by effecting transforming growth factor-? Ⅲ(TGF-? Ⅲ) receptor expression is still unknown.OBJECTIVE:To study the influence of BMSCs on the expression of TGF-? Ⅲ receptor in the process of differentiation of CD117+ CSCs.DESIGN,TIME AND SETTING:In vitro cytology contract observation.The experiment was performed at the Xinhua Hospital from February 2008 to February 2009.MATERIALS:Neonatal rats,weighing 5-8 g,were used to prepare CSCs.Sprague Dawley rats,4 weeks old,weighing 200-250 g,were prepared for BMSCs.METHODS:CD117+CSCs were obtained from neonatal rats by explant cultures and magnetic bead cell sorting.Immunohistochemical experiment was performed to identify specificity of CSCs.CD117+CSCs suspension were synchronization without serum for 24 hours,washed by PBS for 3 times,and then cultured with DMEM/F12,followed by inoculation into 6-well plate.The cells were divided into the control and co-culture groups.In the control group,CSCs were induced differentiation by cardiac spheres,and Transwell chamber were used in the co-culture group.MAIN OUTCOME MEASURES:The growth of CSCs was observed by inverted microscope.The changes of cardiac Troponin T(cTnT),connexin43,TGF-? Ⅲ receptor,smad2 and phospho-smad2 expressions were detected by western blot at days 1,3,5 and 7 after culture.RESULTS:①CSCs isolated by explants cultures and MACS expressed CD117,which grew in disperse with smaller body.② The expression of cTnT and connexin43 were significantly higher in the co-culture group than that of the control group at days 5 and 7(P

Objective To investigate the expression of miR-21 and PDCD4mRNA in colorectal cancer and their correlation with clinicopathological characteristics,to elucidate relationship between PDCD4and miR-21 in vivo.Methods Expression of RNA (including miR-21and PDCD4mRNA) and PDCD4 protein were detected respectively by quantitative real-time reverse transcriptase-PCR and SP immunohistochemical staining in 43 cases of colorectal carcinoma and corresponding normal mucous membrane tissue.Results In colorectal carcinoma,expression of miR-21 was higher than that of the control ( P ＜ 0.05 ),and expression of PDCD4mRNA lower than the control ( P ＜ 0.05 ).Expression of miR21 was associated with lymph node metastasis and clinical stages ( Ⅰ + Ⅱ,Ⅲ + Ⅳ ) ( P ＜ 0.05 ).On the other hand,no significant differences were observed regarding sex,tumor site,size,local invasion,distant metastases,clinical stages( Ⅰ,Ⅱ ) (P ＞ 0.05 ).Expression of PDCD4mRNA was associated with local invasion,clinical stages ( Ⅰ,Ⅱ ) ( P ＜ 0.05 ).While no significant differences were found concerning sex,site,size,lymph node metastasis,distant metastases,clinical stages( Ⅰ + Ⅱ,Ⅲ + Ⅳ ) ( P ＞ 0.05 ).miR21 levels was negatively correlated with PDCD4 expression including nuclear and nuclear and cytoplasmic put together (P ＜ 0.05 ),in contrast to PDCD4mRNA and PDCD4 expression in cytoplasmic ( P ＞ 0.05 ).Conclusions ( 1 ) Abnormal expression of PDCD4 mRNA and miR-21 correlate with prognosis in colorectal cancer.(2) miR-21 suppress translation of PDCD4mRNA by binding to the 3'-untranslated region (3'-UTR)of target PDCD4mRNA.

ObjectiveTo explore the expression of miR-130b and RUNX3mRNA in human gastric carcinoma and the clinical significance. MethodsThe expression of miR-130b and RUNX3mRNA were detected by RT-PCR in 40 cases of gastric carcinoma and corresponding normal mucosa tissue. The expression of RUNX3protein was determined by immunohistochemistry SP method. ResultsThe expression of miR-130b was significantly up-regulated in gastric carcinoma than that in the adjacent normal gastric mucosa tissues (2.18 ± 3.75 ) vs.( 2.59 ± 3.45 ),P ＜ 0.05 ; The expression of RUNX3mRNA in gastric carcinoma tissues was significantly lower than that in adjacent normal gastric mucosa tissues( 8.76 ±2.82) vs.( 7.58 ± 2.87 ),P ＜ 0.05.The expression of miR-130b and RUNX3mRNA were positively correlated with lymph node metastasis and clinical stage ( P ＜ 0.05 ) ; No significant association was found between the expression and age,gender,tumor size,distant metastasis and depth of tumor invasion ( P ＞0.05 ).The expression of miR-130b was negatively correlated with RUNX3 protein expression in nuclei and cytoplasm (P ＜ 0.05 ).ConclusionsAbnormal expression of miR-130b and RUNX3mRNA correlates with prognosis of gastric carcinoma; Decreased RUNX3 protein expression may contribute to tumourigenesis.

Objective To investigate the relationship between p27 gene methylation and pathology of colorectal carcinoma. Methods p27 gene methylation promotor region and p27 protein expression were detected respectively by methylation specificity polymerase chain reaction and immunohistochemical staining SP in 106 cases of colorectal carcinoma and each adjacent normal mucous membrane tissue and 22 cases of colorectal adenoma tissue. Results The positive expression rate of p27 gene methylation was statistically different in colorectal carcinoma tissue compared with normal mucous membrane and colorectal adenoma tissue (P＜0.05). Their positive expression rate were 59.4% (63/106), 18.2% (4/22) and 3.8%(4/106) respectively in colorectal carcinoma tissue,colorectal adenoma and normal mucous membrane tissue (P ＜ 0. 05). p27 gene methylation in poorly differentiated group was significantly higher than that in welldifferentiated group (48.0% vs. 24. 7%, P ＜0. 05), in Dukes-A + B stage group was significantly lower than that in Dukes C + D stage group(20. 0% vs. 41.2%, P ＜ 0. 05 ), and it was higher in lymph nodes metastases group than that in lymph nodes negative group(41.5% vs. 23. 1%, P ＜0. 05), that in positive serosa infiltration group was higher than negative serosa infiltration group(32. 5% vs. 24. 1%, P ＞ 0. 05 ).Conclusions Methylated p27 gene protein expression in colorectal carcinoma was significantly higher than normal mucous membrane and colorectal adenoma tissue. The methylation rate of p27 gene in colorectal carcinoma was significantly associated with tumor differentiation, invasive depth, Dukes stage, lymph node metastasis.

Objective To investigate the relations between p53 and K-ras gene mutation in portal venous blood of gastric carcinoma patients and cancer metastasis. Methods p53 and K-ras gene mutation was detected with PCR-SSCP technology in 62 cases of gastric carcinoma. Results p53 and K-ras mutation rate were 39% and 34% in portal venous blood, but only 8% and 4. 8% in peripheral blood; The rate of gene mutation in p53 and K-ras were 24% and 22% in patient without liver metastasis, 92% and 77% in patient with liver metastasis; The rate of gene mutation in p53 and K-ras in portal venous were 39% and 34% before surgical exploration, but 56% and 63% after exploration. The rate of positive detection of the mutation was significantly (P

Magnetic resonance imaging (MRI) data of 87 patients with suspected cervical posterior longitudinal ligament (PLL) rupture,who underwent cervical spine surgery in Luoyang Orthopedic Hospital from January 2015 to September 2017,were analyzed retrospectively.The criteria of MRI diagnosis for PLL rupture were the low signal image of the PLL on the posterior margin of the vertebral body,the discontinuity or continuous interruption,or the local highlighting signal on the T2 weighted image.According to intraoperative findings,the diagnostic accuracy of MRI for PLL rupture was examined.Among 87 patients,31 cases were diganosed as PLL rupture by preoperative MRI;and 38 cases were confirmed by intraoperative exploration,of whom 30 were diagnosed with MRI,and 8 were missed by MRI.The accuracy,sensitivity and specificity of MRI in the diagnosis of ruptured PLL were 0.90,0.79 and 0.98 respectively.MRI has a good diagnostic efficiency in PLL rupture,which can be used for preoperative investigation.

Background::Sepsis is a systemic inflammatory syndrome induced by several infectious agents. Multiple organs are affected by sepsis, including the liver, which plays an important role in metabolism and immune homeostasis. Fibroblast growth factors (FGFs) participate in several biological processes, although the role of FGF5 in sepsis is unclear. Methods::In this study, lipopolysaccharide (LPS) was administrated to mice to establish a sepsis-induced liver injury. A similar in vitro study was conducted using L-02 hepatocytes. Western blot and immunohistochemistry staining were performed to evaluate the FGF5 expression level in liver tissues and cells. Inflammatory cell infiltrations, cleaved-caspase-3 expressions, reactive oxygen species and levels of inflammatory cytokines were detected by immunofluorescence, dihydroethidium staining, and reverse transcription quantitative polymerase chain reaction analysis, respectively. Flow cytometry was used to detect the apoptosis level of cells. In addition, ribonucleic acid (RNA)-sequencing was applied to explore the possible mechanism by which FGF5 exerted effects. Results::LPS administration caused FGF5 down-regulation in the mouse liver as well as in L-02 hepatocytes. Additionally, with FGF5 overexpression, liver injury and the level of hepatocyte apoptosis were ameliorated. Further, RNA sequencing performed in hepatocytes revealed the phosphoinositide-3-kinase/protein kinase B (PI3K/AKT) pathway as a possible pathway regulated by FGF5. This was supported using an inhibitor of the PI3K/AKT pathway, which abrogated the protective effect of FGF5 in LPS-induced hepatocyte injury. Conclusion::The anti-apoptotic effect of FGF5 on hepatocytes suffering from LPS has been demonstrated and was dependent on the activation of the PI3K/AKT signaling pathway.

Objectives:To investigate and analyze the risk factors of screw loosening after single segment posterior lumbar interbody fusion(PLIF)with cortical bone trajectory(CBT)screw,and to establish and validate a visualized nomogram predictive model.Methods:A retrospective study was conducted on 102 patients un-dergone single-segment PLIF in our hospital from March 2020 to June 2023,and a total of 357 CBT screws were placed,averaged 3.5±0.3 per patient.The postoperative follow-up time was 2.0-35.0 months,with a me-dian of 22.5 months.On the basis of lumbar CT scans,screw loosening was defined as a continuous trans-parent area exceeding 1mm,surrounded with thin sclerotic areas.The patients were divided into loosening group of 45 cases and non-loosening group of 57 cases,with 117 screws loosening and 240 screws non-loosening.The demographic data[gender,age,body mass index(BMI),bone mineral density(BMD)],operative in-dicators(operative time,blood loss,lumbar fusion grade,Oswestry disability index),and radiological parameters[screw fixation to S1(FS1),screw trabecular Hounsfield unit(HU),screw sagittal angle(SA),coronary angle(CA),and cortical bone contact layer(CBCL)]were compared between groups.Lasso regression and multivariate logis-tic regression models were used to screen the optimal independent risk factors to screw loosening,and then a nomogram predictive model was constructed with R software.The internal predictive stability[consistency index(C-index)],prediction differentiation(sensitivity and specificity),prediction probability accuracy(degree of agree-ment),and net clinical benefit of the model was evaluated with Bootstrap method,receiver operating curve(ROC),calibration curve,and decision curve analysis(DCA).Results:The BMD in loosening group was signifi-cantly less than that in non-loosening group(P＜0.05),and there were no statistical differences in the other demographic data and surgical indexes between two groups(P＞0.05).Compared with non-loosening group,the FS1 percentage and CA in the loosening group significantly increased,while CBCL significantly decreased(P＜0.05).BMD(OR=0.44,95％CI=0.21-0.89,P＜0.001),FS1(OR=3.12,95％CI=2.03-4.54,P＜0.001),CA(OR=1.45,95％CI=1.12-2.03,P＜0.001),and CBCL(OR=0.67,95％CI=0.32-0.88,P＜0.001)were the independent risk fac-tors of screw loosening after single-segment PLIF.The total score of the model was 140 points.The bootstrap method calculated the C-index of 0.856(P=0.125),ROC showed area under curve(AUC)of 0.847(95％CI=0.801-0.912,P＜0.001).The calibration curve and DC A both showed good consistency in the model's predic-tive result and clinical net benefit ratio.Conclusions:The BMD,FS1,CA,and CBCL are the independent risk factors for screw loosening after single-segment PLIF with CBT screws,and the nomogram model con-structed has certain application values in early clinical screening of high-risk patients for screw loosening.

ObjectiveTo observe the efficacy and safety of Uyghur medicine Yangxin Dawayimixike Honey Paste （养心达瓦依米西克蜜膏， YDMHP） in the treatment of stable angina pectoris （SAP） of qi stagnation and blood stasis syndrome. MethodsA randomized ， double-blind， positive-controlled，multi-center clinical trial was conducted， in which 370 patients with SAP of qi stagnation and blood stasis syndrome were randomly divided into treatment group（279 cases）and control group（91cases）at a ratio of 3∶1. The treatment group was orally administered with YDMHP， 3 g each time， and placebo of Xuefu Zhuyu Capsule （血府逐瘀胶囊）， 2.4 g each time， while the control group was treated with Xuefu Zhuyu Capsule， 2.4 g each time， and placebo of YDMHP， 3 g each time， both twice a day for a course of 12 weeks. The primary outcome was the effect of angina pectoris symptom. The secondary outcomes include single angina symptom scores such as number of attacks， duration of attacks， pain intensity and usae of nitroglycerin scores， the total angina symptom score before and after the treatment， the usage of nitroglycerin， the exercise duration in treadmill exercise test （TET） and the Duck treadmill score among patients，the scores of Seattle Angina Questionnaire （SAQ） on five dimensions including physical limitations， anginal stability， anginal frequency， treatment satisfaction， and disease perception， and efficacy of TCM syndrome and of each single TCM symptom after treatment. The safety were evaluated by examine blood routine， urine routine， liver and kidney function， fasting blood sugar， electrocardiogram， adverse events. ResultsThe total effective rate of angina symptom in the treatment group was 71.69% （200/279）， significantly higher than 51.64% （47/91） in the control group （P＜0.01）. The curative and markedly effective rate of TCM syndrome in the treatment group was 53.05% （148/279）， which was significantly higher than 25.27% （23/91） in the control group （P＜0.01）. After treatment， scores of the number as well as duration of angina attacks and pain severity， the total score of angina symptoms， and the usage of nitroglycerin significantly decreased in both groups， and more changes were seen in the treatment group than in the control group； the scores of physical limitations， anginal stability， anginal frequency， treatment satisfaction， and disease perception in both groups significantly increased， and more improvement were shown in the experimental group regarding the anginal stability， anginal frequency and treatment satisfaction （P＜0.05 or P＜0.01）. The effects of chest pain， chest tightness， palpitation， shortness of breath and fatigue in experimental group were significantly higher than those in control group （P＜0.05 or P＜0.01）. There was no significant difference in the exercise duration of treadmill test and Duke score among patients between the two groups either before or after treatment （P＞0.05）. Adverse events occurred in 66 cases （23.66%） of the experimental group and 16 cases （17.58%） of the control group， with no statistical significance between the two groups （P＞0.05）. ConclusionThe Uyghur medicine YDMHP can effectively improve symptoms of angina pectoris， reduce the number， duration， and intensity of attacks， decrease the dosage of nitrogly-cerin and improve the individual TCM symptoms and has good safety in the treatment of SAP patients of qi stagnation and blood stasis.