MiR-494 involves in cell cycle regulation,differentiation and apoptosis processes of normal ceils.Recent study shows that abnormal expression of miR-494 is associated with oncogenesis closely,and it participates in the invasion and metastasis of tumor cells and so on.MiR-494 is not only a tumor suppressor gene,but also can be considered as a cancer-promoting gene.MiR-494 can regulate the oncogenesis and development of the tumor through a variety of target genes and signaling pathways.

Objective To investigate two techniques and outcome in repairing facial concave deficits.Methods Eleven patients with facial concave deformity were included in this study:nine were treated with autologous fat granule injection,1,3 and 5 patients were given fat granules injection fourth,twice and once,respectivly.The other 2 patients were repaired with homolateral temporal fascia flap.Results The implantation by using autologous fat granules in all 9 patients showed excellent results.Homolateral temporal fascia flaps were used in 2 cases,one of which was formed hematoma after operation and scavenged thereafter.All the patients had satisfactory results.Conclusion Both approaches well rehabilitate patients' facial contour,and thus are capable of repairing moderate or minimal facial concave deficit and worth recommendation.

AIM:To investigate the effect of hydrogen sulfide (H2S) on the expression of MAPKs and ileal epithelial cell apoptosis in the rats with intestinal ischemia-reperfusion ( I/R) injury.METHODS:Healthy female Wistar rats were randomly divided into sham operation group, I/R group, I/R+sodium hydrosulfide ( NaHS) group .The animal model of intestinal ischemia reperfusion was established.Apoptosis index ( AI) of ileal epithelial cell was measured by TUNEL assay.H2 S was detected by sensitive sulfide electrode.The mRNA expression of ERK, JNK and p38MAPK was detected by RT-PCR.The protein levels of phosphorylation( p)-ERK, p-JNK, p-NF-κB P65 and p38MAPK were deter-mined by Western blot.RESULTS:H2 S, ERK mRNA and p-ERK in I/R group were significantly higher than those in I/R+NaHS group and sham group while JNK mRNA, p38MAPK mRNA, p-JNK, p-p38MAPK, p-NF-κB P65 and AI were predominantly higher than those in I/R+NaHS group and sham group (P<0.01).CONCLUSION:H2S attenuates ileal epithelial cell apoptosis in the rats with intestinal I/R injury by down-regulating ERK mRNA p-ERk and up-regulating JNK mRNA, p38MAPK mRNA and phosphorylation of JNK, p38MAPK and NF-κB P65.

Objective To study the change in endogenous hydrogen sulfide (H2S) in patients with acute pancreatitis and its relationship to coagulation function. Methods A prospective case control study was conducted. Forty patients with mild acute pancreatitis (MAP group) and 40 with severe acute pancreatitis (SAP group) admitted to Yiwu Central Hospital in Zhejiang Province from December 2002 to March 2015 were enrolled. Forty healthy persons served as control (healthy control group). Blood was collected to determine the levels of H2S, blood coagulation factor Ⅷ (FⅧ), von Willebrand factor (vWF), plasminogen (PLG), antithrombin (AT), platelet count (PLT), tissue factor (TF), tumor necrosis factor-α (TNF-α), and protease activated receptor-1 (PAR-1). The correlations among the above parameters were analyzed. Results There was no statistical significance in sex, age, body weight and time of disease among three groups, indicating it was comparable among the groups. Compared with healthy control group, the levels of H2S, FⅧ, vWF, TF, TNF-α, and PAR-1 in MAP and SAP groups were significantly elevated [H2S (μmol/L): 67.42±6.34, 112.47±12.69 vs. 42.57±4.18, FⅧ: (67.5±5.8)%, (82.3±4.7)% vs. (57.2±6.4)%, vWF: (112.6±9.7)%, (142.5±12.5)% vs. (76.4±8.2)%, TF (ng/L): 45.27±4.34, 64.76±6.25 vs. 18.15±1.89, TNF-α (ng/L): 197.67±13.62, 324.72±25.54 vs. 20.08±2.57, PAR-1 (fluorescence intensity): 32.16±4.43, 56.12±7.07 vs. 12.27±2.12, all P < 0.01], and PLG and AT activity were significantly decreased [PLG: (52.4±4.7)%, (36.7±3.2)% vs. (62.1±5.6)%, AT: (43.2±6.9)%, (35.5±5.4)% vs. (53.6±6.1)%, all P < 0.01]. The changes in the parameters in SAP group were more remarkable than those in MAP group (all P < 0.01). PLT in SAP group was significantly lower than that in healthy control and MAP groups (×109/L: 8.5±1.1 vs. 15.7±2.8, 12.4±1.9, both P < 0.01). H2S was positively correlated with FⅧ, vWF, TF, TNF-α, and PAR-1 (r value was 0.56, 0.61, 0.72, 0.66, 0.64, respectively, all P < 0.01), and it was negatively correlated with PLG and AT (r value was -0.64, -0.57, both P < 0.01). Conclusion As an inflammatory factor, endogenous H2S deteriorates coagulation function in patients with acute pancreatitis by up-regulating TF, TNF-α, and PAR-1.

Serum KL-6 is a category of glycoprotein coded by the epithelium of sticky protein 1(MUC1) gene,which has already been regarded as an indicator of interstitial lung diseases,and later found highly expressed in part of malignant tumor patients.In recent years,studies has found that serum KL-6 is associated with the incidence of radioactive pneumonia,and monitoring serum KL-6 can predict the occurrence of radioactive pneumonia as well assess the severity and prognosis of disease.

OBJECTIVE:To establish the method for the residues determination of 5 organic solvents in teicoplanin raw materi-al and injection. METHODS:Headspace GC was performed on the column with 6% cyanopropylphenyl-94% dimethyl polysiloxane (DB-624)as the stationary phase capillary column,the carrier gas was nitrogen,using the temperature program. The temperature of inlet was 200 ℃,detector was hydrogen flame ionization detector with the flow rate of 1 ml/min,split ratio was 40 ∶ 1 and the vol-ume was 1 ml. RESULTS:Good linearity of ethanol,acetone,ethyl acetate,tetrahydrofuran and triethylamine were obtained(r were 0.999 0-0.999 3);the average recoveries were respectively 95.6%,97.0%,103.2%,94.3%and 98.2%(RSD were 2.1%-4.9%, n=9);RSDs of precision and repeatability tests ≤2.6%;and the minimum detectable concentration were respectively 2,2,2,0.7 and 0.3 μg/ml. CONCLUSIONS:The established method is rapid,sensitive and accurate,and can be used for the residues determi-nation of organic solvents in teicoplanin raw materials and injection.

Objective To observe the correlation between CD4+ CD29+ T cells and metastasis and radiotherapy for patients with pulmonary adenocarcinoma. Method Seventy-one patients with lung adenocarcinoma, 93 patients with lung adenocarcinoma ,76 cases of chronic obstructive pulmonary disease (COPD),63 cases of healthy volunteers were enrolled. Frequencies of blood CD4+ CD29+ T cells and their intracellular necrosis factor alpha(TNF-α)and interleukin 1(IL-1)were compared. Compare TNF-α,IL-1,integrin beta 1 and vascular endothelial growth factor(VEGF)levels in the patients with transferred pulmonary adenocarcinoma or with non-transferred pulmonary adenocarcinoma and their changes with the treatment of radiotherapy. Results the patients with lung adenocarcinoma and non lung adenocarcinoma were significantly higher than that of COPD and health group,and patients with lung adenocarcinoma is significantly higher than patients with non lung adenocarcinoma (P<0.05);Integrin beta 1,VEGF and CD4+CD29+T cells,TNF-αand IL-1 level in patients with lung adeno-carcinoma metastasis were significantly higher than non-transferred group(P < 0.05);After radiotherapy,CD4+CD29+T cells,TNF-αand IL-1 in patients with lung adenocarcinoma were significantly lower than before(P<0.05);CD4+ CD29+ T cells,TNF alpha and IL-1 with integrin beta 1 and VEGF had significantly positive correlations. Conclusion CD4+CD29+T cells and cytokines increase significantly in the blood of patients with lung adenocarci-noma,and are related to the prognosis of metastasis and radiation therapy,which has important clinical significance.

OBJECTIVE:To observe the clinical efficacy of sitagliptin combined with benazepril in the treatment of diabetic nephropathy(DN). METHODS:Sixty DN patients admitted to our hospital during Sept. 2014-Jun. 2015 were divided into sitagliptin group,benazepril group,drug combination group according to random number table,with 20 cases in each group. Based on routine treatment,sitagliptin group was given sitagliptin 100 mg orally,qd;benazepril group was given Benazepril 10 mg orally,qd;drug combination group was given sitagliptin 100 mg+benazepril 10 mg orally,qd. The drug dosage would be doubled if the blood pressure of patients in 3 groups had not yet reached the standard. Treatment course of 3 groups lasted for 12 weeks. The levels of 24 h urine protein,IL-6 and Cys-C were measured in 3 groups before and after treatment. Clinical efficacies and the occurrence of ADR were observed. RESULTS:Total response rate of drug combination group(90.00%)was significantly higher than those of sitagliptin group (65.00%)and benazepril group(70.00%);there was statistically significance(P<0.05). After treatment,the levels of 24 h urine protein,IL-6 and Cys-C in 3 groups were significantly lowered,compared to before treatment;those of drug combination group was significantly lower than those of other 2 groups;there was statistically significance(P<0.05). There was no statistical significance in above indexes between sitagliptin group and benazepril group(P>0.05). No obvious ADR was found in 3 groups during treatment. CONCLUSIONS:Both sitagliptin and benazepril can decrease the levels of 24 h urine protein,IL-6 and Cys-C,while drug combination shows better effect and clinical response rate,and does not influence the safety of drug use.

BACKGROUND:Chondrocytes co-cultured with bone marrow stromal stem cells on the scaffold of platelet-rich plasma are found to proliferate, and besides proliferative growth, bone marrow stromal cells exhibit a tendency of differentiating into chondrocytes. OBJECTIVE:To study the effect of platelet-rich plasma and human umbilical cord mesenchymal stem cells (hUCMSCs) on cartilage repair. METHODS:Forty healthy New Zealand white rabbits were selected to establish models of cartilage defects, and then randomly divided into normal saline group, platelet-rich plasma group, hUCMSCs group and combination group. Platelet-rich plasma was prepared by using double centrifugations to prepare passage 3 hUCMSCs. After modeling, intra-articular injection of normal saline (0.5 mL), 12.5%platelet-rich plasma (0.5 mL), 1×107 hUCMSCs (0.5 mL), 12.5%platelet-rich plasma+1×107 hUCMSCs (total y 0.5 mL) was done in corresponding groups, respectively. After 12 weeks of modeling, the injured cartilage was grossly observed, and hematoxylin-eosin staining was used to observe cartilage repair under light microscope;according to the O'Driscol histologic standard, histological examination was performed. RESULTS AND CONCLUSION:The repair effect in the normal saline group was significantly better that in the platelet-rich plasma group, hUCMSCs group, combination group (P<0.05), while the platelet-rich plasma group and combination group also exhibit better outcomes than the hUCMSCs group (P<0.05). These findings indicate that both platelet-rich plasma and hUCMSCs can promote cartilage repair;moreover, platelet-rich plasma with or without hUCMSCs is superior to hUCMSCs alone in the cartilage repair.

Objective:To explore the effect of hydrogen sulfide (H 2S) on expression of phosphatidylinositol 3 kinase/protein kinase B (PI3K/Akt) signal pathway in rats with intestinal ischemia/reperfusion (IRI) injury. Methods:Thirty male Wistar rats were divided into sham operation group (Sham group), IRI group, and H 2S precursor sodium hydrosuphide (NaHS) intervention group (IRI+NaHS group) by random number table method, with 10 rats in each group. The animal model of IRI was established by 60 minutes superior mesenteric artery (SMA) blockage with non-invasive vascular clamp and 120 minutes reflow. SMA was dissociated and peritoneum cavity was closed in Sham group. The rats in IRI+NaHS group was received NaHS (100 μmol/kg bolus+1.07 mmol·kg -1·h -1 infusion) 10 minutes prior to the onset of reperfusion, while the rats in IRI group and Sham group were received equal volume of normal sodium. Blood in vena cava was collected. H 2S was detected by sensitive sulfide electrode. Rats were sacrificed after blood collection. Histopathology change was observed by hematoxylin-eosin (HE) staining, ileal pathological score was studied by Chiu score. The protein expressions of phosphated Akt (p-Akt), Akt, PI3K, cleaved caspase-9, mammalian target of rapamycin (mTOR) were determined by Western Blot. Results:Compared with the Sham group, there was intestinal mucosa structure disorder edema and shedding villous fracture in the IRI group. Ileal pathological score in IRI group was significantly increased (4.21±0.15 vs. 0.15±0.03, P < 0.01), while plasma H 2S in IRI group was significantly decreased (μmol/L: 26.72±3.17 vs. 38.34±5.24, P < 0.01). Ileal p-Akt, PI3K, caspase-9 and mTOR protein in IRI group were significantly increased (p-Akt/GAPDH: 2.67±0.12 vs. 0.24±0.05, PI3K/GAPDH: 1.42±0.07 vs. 0.57±0.08, caspase-9/GAPDH: 4.23±0.61 vs. 0.13±0.02, mTOR/GAPDH: 2.17±0.23 vs. 0.23±0.02, all P < 0.01). Compared with the IRI group, pathological changes of intestinal mucosa in the IRI+NaHS group was improved, ileal pathological score was significantly decreased (1.56±0.02 vs. 4.21±0.15, P < 0.01), plasma H 2S was significantly increased (μmol/L: 32.36±2.45 vs. 26.72±3.17, P < 0.01) and ileal p-Akt, PI3K were significantly increased (p-Akt/GAPDH: 5.12±0.08 vs. 2.67±0.12, PI3K/GAPDH: 3.14±0.05 vs. 1.42±0.07, both P < 0.01), while caspase-9, mTOR in IRI+NaHS group were significantly decreased (caspase-9/GAPDH: 2.12±0.24 vs. 4.23±0.61, mTOR/GAPDH: 1.37±0.28 vs. 2.17±0.23, both P < 0.01). Conclusion:H 2S attenuates intestinal injury in IRI rats by up-regulating PI3K/Akt signal pathway and down-regulating caspase-9 and mTOR.