MicroRNAs(miRNAs) are small mm-coding RNA molecules that post-transcriptionul-ly regulate gene expression. Advanced studies show that miRNA are involved in cancer. Even some scientists regard miRNAs as oncogenes or tumor associated genes. This review tries to have a brief introduction on the progress in the relationship between miRNAs and tumor's formation,development,diagnosis,therapy and prognosis in humans.

Objective To investigate expression of elastin,lysyl oxidase (LOX)and elafin in cardinal ligament of women with pelvic organ prolapse(POP) so as to determine their contributions to POP.Methods The cardinal ligament samples were obtained from 60 POP subjects and 60 non-POP control women undergoing hysterectomy.RT-PCR was used to verify the mRNA level of elastin,LOX and elafin.The protein concentration of the three genes was determined by western blotting technique,electrophoretic separation and quantification.Results The premenopansal and postmenopausal POP groups demonstrated significantly decreased expressions of elastin in cardinal ligament both in mRNA and protein levels than control group (mRNA 0.42±0.22,0.26±0.20 versus 0.79±0.30,0.63±0.23 ; protein 0.44±0.32,0.20±0.19 versus 0.89±0.27,0.78±0.25; P＜0.05).There was an identical tendency in the expression of LOX (mRNA 0.37±0.18,0.20±0.14 versus 0.65±0.22,0.53±0.20; protein 0.45±0.27,0.26±0.21 versus 0.85±0.39,0.69±0.31 ; P＜0.05).In POP group,the mRNA and protein levels of elastin and LOX in postmenopansal patients were significantly lower than premenopansal patients (P＜0.05).Inversely,POP group demonstrated an increased expression of elafin in cardinal ligament both in mRNA and protein levels than corresponding control group (mRNA 1.33±0.35,1.47±0.37 versus 0.62±0.25,0.55±0.24; protein 0.85±0.30,0.76±0.35 versus 0.21±0.15,0.29±0.22; P＜0.05). There was no significant difference in the expression of elafin between premenopansal and postmenopausal POP groups either in mRNA or protein levels(P＞0.05).There was a positive correlation between elastin and LOX both in mRNA and protein levels in POP group(r=0.9959,0.9708; P＜0.05),but there was no correlation between elastin and elafin(r=-0.0402,-0.0365;P＞0.05).Conclusions The results suggest that the decreased expression of elastin and LOX and the increased expression of elafin in the cardinal ligaments may contribute to POP.

Objective:To observe the conditions of isolation,purification and culture of mesenchymal stem cells(MSCs) in vitro derived from human umbilical cord,and to observe the repairing effect on experimental hepatic fibrosis in rats by transplantation with MSCs only or MSCs with IL-10.Methods:The MSCs derived from human umbilical cord were isolated,purified and cultivated in vitro.The model of hepatic fibrosis induced by CCl4 was established.After the model of hepatic fibrosis was succeeded,the rats were divided into three groups:model group,MSCs transplantation group,MSCs transplantation with IL-10 group.MSCs transplantation group was given 1×106 MSCs by the tail vein injection at the first 1 weeks,2 weeks and 3 weeks.MSCs transplantation with IL-10 group not only was given MSCs the same with MSCs transplantation group, but also was injected of IL-10 ( 4 μg/kg ) in abdomen, 4 times a week.After 4 weeks,the rats were executed,rats blood was collected to observe the changes of liver function and the index of liver fibro-sis.The liver HE staining was carried out to observe the changes of liver pathology.Expression of MMP-2 mRNA was detected by RT-PCR method,expression of TGF-βprotein was detected by Western blot method.Results:The rat liver function and the index of liver fibrosis improved obviously with a significant difference between model group , MSCs transplantation group and MSCs transplantation with IL-10 group after transplanting,MSCs with IL-10 was better than MSCs only.Liver tissue of rats with hematoxylin eosin staining suggested,liver fibrosis was obviously improved,and the MSCs transplantation with IL-10 group was best.MMP-2 mRNA expression was significantly higher between normal group and model group,MSCs transplantation group with a significant difference (P<0.05),MMP-2 mRNA expression was higher with a no significant difference between model group and MSCs transplantation with IL-10 group ( P>0.05).TGF-βprotein expression of other groups was higher than normal group with a significant (P<0.05),and MSCs transplantation with IL-10 group was the largest decrease than normal group.Conclusion:MSCs only or MSCs with IL-10 transplantation can improve the biochemical characteristics of rat peripheral blood and liver histological structure,and with IL-10 wan better than MSCs only.MSCs and IL-10 play a role in the treatment of liver fibrosis through lowering the expression of MMP-2 and the expression of TGF-βprotein.

Objective: To study electrocardiogram (ECG) monitoring assisted ultrasound guidance for modiifed seldinger technique (MST) in peripherally inserted central catheters (PICC) and to estimate the accuracy of ECG for presenting catheter tip location. Methods: The patients were connected with ECG monitoring system, the guide wire was connected to RA electrode in ECG monitor for leading out P wave of intracavitary ECG. The location of catheter tip was estimated by P wave characteristics and then, estimated ECG result was further compared with chest X-ray presented catheter tip position. The coherence of catheter tip position between ECG and chest X-ray was compared, the sensitivity and speciifcity of ECG estimation were calculated. Results: There were 100/104 patients showed speciifc P wave in ECG, the coherence to chest X-ray was 96.2%; 4 patients had no speciifc P wave and their chest X-ray presented that the catheter tip position at upper superior vena cava in 2 patients, at lower superior vena cava in 1 patient, at contralateral brachiocephalic vein in 1 patient. The accuracy of 2 methods had no statistic meaning. ECG estimation for PICC catheter tip position had the sensitivity at 99% and speciifcity at 100%. Conclusion: ECG monitoring may determine the catheter tip position for MST in PICC guided by ultrasound. It doesn’t need chest X-ray, without additional trauma and no radioactive contamination, which make PICC catheters get more extensive application in clinical practice.

Neuroinflammation may be one of the causes in the pathogenesis of Alzheimer's disease(AD).Epidemiological studies suggest that long-term use of nonsteroidal anti-inflammatory drugs(NSAIDs)can reduce the risk of AD.Laboratory evidence indicates that the protection of NSAIDs is mediated by inhibition of cyclooxygenase(COX)activity and the non-COX mechanisms.This review summarizes the possible underlying mechanisms in the action.

Objective To evaluate the value of video-assisted thoracic surgery(VATS)for penetrating thoracoabdominal injuries.Methods Under general anaesthesia and double-lumen tracheal intubation,VATS was carried out to examine patients with chest injuries.Those who had mild injuries received VATS combined with mini-incision surgery.Electrocoagulation or suturing was employed to control intraoperative bleeding,and then blood clots were removed.Injured diaphragm muscles were repaired,and organs with hemorrhage or ruptures were sutured or resected.The seriously injured cases underwent open surgery and intra-abdominal exploration instead.Results A total of 18 patients received the operations.Among them,15 patients underwent VATS combined with mini-incision surgery(repair of the diaphragm was performed on 15,controlling intercostal arterial bleeding on 8,repair of the lung on 2,wedge resection of the lung on 2,and coagulated hemothorax removal on 2),the other 3 were converted to open surgery for repairing the diaphragm(3),heart(1),or esophagus(1),or lobectomy(2).Abdominal surgery via the thorax were performed on 13 cases,including repair of the liver in 1,lienectomy in 1,gastrorrhaphy in 1,repair of diaphragmatic hernia in 3,and intra-abdominal exploration in 7.Five patients received open surgery(pancreatic neoplasty in 1,repair of the liver in 1,lienectomy in 1,gastrorrhaphy in 2,and repair of the caul and mesenterium in 3).One patient who had multi-organ penetrating injuries died of hemorrhagic shock,circulatory failure,and DIC after open thoracic and abdominal surgeries.The mean operation time in this series was(125?44)minutes(ranged from 45 to 220),and the mean blood loss was(1089?582)ml(500 to 10 000 ml).Twenty-four hours after the operation,the mean volume of chest drainage was(234?75)ml(100 to 350 ml)in the first 24 hours after the operation.The chest drainage tube was withdrawn 2.5(2 to 5)days postoperation.The patients expelled gas in 1 to 4 days(mean,2 days).Totally,12 patients were followed up for 3 to 12 months(mean,6 months),during which none of them had trauma-related complications.Conclusion VATS combined with mini-incision surgery is safe and effective for patients with thoracoabdominal injuries,if the cases were carefully selected.

Objective To determine and compare the contents of free total organic acids in Pinellia ternata and its processed products.Methods Back potentiometric titration was employed to determine the contents of free total organic acids in Pinellia ternata and its processed products.Results The contents of free total organic acids in three batches of Pinellia ternata and its processed products were determined.The contents of free total organic acids in prepared rhizoma pinelliae was higher than that of the crude drug.The recovery was 95.20% and RSD was 1.81%.Conclusion This method were simple,accurate and can be used to estimate the quality of Pinellia ternata and its processed products(prepared with potash alum and juice of rhizima zingiber or with just potash alum).

Objective To study the application of carcinoembryonic antigen (CEA),carbohydrate antigens19-9 (CA19-9) and carbohydrate antigens72-4 (CA72-4) in the diagnosis of gastric cancer.Methods A total of 78 patients with gastric cancer underwent treatment in our hospital from August,2007 to June,2011 were enrolled as the case group.A total of 78 patients with benign gastric diseases and 78 healthy residents of the same period and district were randomly selected as the benign group and healthy control group,respectively.Measurements of serum CA72-4,CA19-9,CEA of all the cases and control group were performed.And the measurements of the three groups were statistically compared.Results The Serum concentration of CA72-4,CA19-9,CEA were significantly higher than the other two groups [CEA:(27.56 ± 18.36) μg/L vs (2.44 ±0.97) μg/L vs (2.37 ± 1.25) μg/L,F =145.346,P ＜0.0001 ; CA19-9:(99.87 ±80.53) kU/L vs (18.21 ±10.36) kU/Lvs (17.48 ±9.66) kU/L,F=78.503,P＜0.0001; CA72-4:(56.13 ±39.26)kU/L vs (5.77 ±2.95) kU/L vs (3.62 ±2.18) kU/L,F =133.892,P ＜0.0001].And the positive rate of the gastric cancer group were significantly higher than those of the other two groups [CEA:69.23％,10.26％and 7.69％; CA19-9:57.69％,23.07％ and 20.51％; CA72-4:83.33％,10.26％ and 8.97％].The combination of the 3 measurements obtained the highest accuracy of diagnosis,while for single measurement,CA72-4 had the highest accuracy.Conclusion CEA,CA19-9 and CA72-4 have a significant meaning in the early diagnosis of gastric cancer,which has high sensitivity and specificity.The detection rate of the gastric cancer will be improved if the test of CEA,CA19-9 and CA72-4 are combined.

Objective To compare the clinical effect of needle knife therapy and traction for treatment of cervical spondylosis .Methods 156 patients with nerve root type of cervical spondylosis patients definitely diag -nosed,randomly divided into two groups ,the treatment group of 78 cases,with small needle knife therapy;the control group of 78 cases,the cervical traction therapy ,combined with traditional Chinese medicine .The clinical efficacy was compared between the two groups .Results The treatment group 70 cases were cured(89.6%),the total efficiency of 96.9%;control group 44 cases were cured(56.7%),the total efficiency of 83.3%.The cure rate and total effective rate was significantly better than the control group (χ2 =22.02,11.57,all P<0.05).Conclusion The needle knife therapy to treat cervical vertebra disease is better than that of cervical traction ,has good clinical curative effect .

Objective To observe the changes of foot processes,expression and distribution of transient receptor potential cation channel 6 (TRPC6) in podocytes by puromycin aminonucleoside (PAN) and dexamethasone (DEX) intervention,then to investigate the function of TRPC6 in podocytes and its relation to proteinuria in kidney diseases.Methods Podocytes cultured in vitro were divided into three group:control group,PAN stimulation group and DEX intervention group.Mouse podocyte cell line (MPC5) were cultured in 0.02％ dimethyl sulfoxide (DMSO) in control group,subjected to PAN (50 μg/ml) treatment alone or with DEX (1 μmol/L) in other two groups for 8 h,24 h,48 h.The podocyte morphology was observed and took pictures by phase-contrast microscope,then the differences of morphology and areas were analyzed.The distribution,mRNA expression and protein expression of TRPC6 were detected by indirect immunocyto-fluorescence,real-time quantitative PCR and Western blotting,respectively.Results The well-developed podocyte arborization and interconnection was formed in control group,but PAN led to significant shrinkage of podocytes (P ＜ 0.05),together with podocyte foot process retraction,effacement and loss of cell contact.DEX significantly prevented the shrinkage and apoptosis of podocytes.The apoptosis rate was significantly increased after PAN stimulated 48 h (P ＜ 0.05).Real-time quantitative PCR and Western blotting found TRPC6 mRNA and protein expression were prone to increase in PAN group compared with control group (P ＜ 0.05).The distribution of TRPC6 becamed abnormal in PAN group.DEX decreased TRPC6 mRNA and protein expression at 48 h compared with PAN group (P ＜ 0.05).The abnormal distribution of TRPC6 was also alleviated by the protection of DEX.Conclusion DEX exerts a direct action to podocyte which retains the integrity of slit diaphragm against podocyte injury,and alleviates proteinuria via stabilizing mRNA,protein expression and distribution of TRPC6.