Objective To search for the method used in enriching caffeates in Cirsium setosum by macroporous adsorption resin, 23 types of macroporous adsorption resin were optimized, which could provide the industrial production of caffeates with the theory basis. Methods The adsorption and elution ratios, product purity and yield, as total indices, were comprehensively evaluatued by 23 types of macroporous adsorption resin in enriching the extracts in C. setosum. Results The product purity and yield of caffeates by the HPD-100 type macroporous adsorption resin were the highest and up to 52.2% and 87.6%. Conclusion The HPD-100 type macroporous adsorption resin shows better comprehensive adsorption property. It is available for the enrichment of caffeates in C. setosum.

Objective　To investigate the expression of HGF and TGF-α and their receptor, Met (HGF receptor) and EGFR (TGF-αreceptor) mRNA, in the regenerative liver/hepatocytes after 70% partial hepatectomy (70% PH) in noncirrhotic biliary obstruction rats. Methods　Wistar rats were divided randomly into N-PH group, BDO-RBF-PH group and BDO-RBF group. The expression of HGF/Met mRNA and TGF-α/EGFR mRNA was measured by RT-PCR in the liver/hepatocytes at the time point of 0, 6, 12, 24, 48 and 72 h after 70% PH or RBF. Results　In N-PH group, the expression of HGF/Met mRNA increased sharply and peaked at 6 h, and maintained at a high level until 24 h after 70% PH. In BDO-RBF-PH group however, the expression of HGF/Met mRNA increased slowly and peaked at 12 h after 70% PH. The peak level was lower in BDO-RBF-PH group than in N-PH one. The expression of TGF-α/EGFR mRNA increased sharply and peaked at 24 h after 70% PH in N-PH group. However, the expression of TGF-α/EGFR mRNA elevated slowly and peaked at 48 h after 70% PH in BDO-RBF-PH group with a lower peak level than that in N-PH group. Conclusion　The expression of HGF/Met mRNA and TGF-α/EGFR mRNA in the regenerative liver/hepatocytes after 70% PH decreases significantly in noncirrhotic biliary duct obstruction rats. There is a tendency that the expression of HGF mRNA and TGF-α mRNA is less than Met mRNA and EGFR mRNA.

ObjectiveTo study the role and mechanism of resisitin in prophylactic and therapeutic treatments of rosiglitazone,a specific peroxisome proliferator-activated receptor-γ(PPARγ) ligand,in rats with severe acute pancreatitis (SAP) and pancreatitis-associated pulmonary injury.MethodsThe levels of amylase ( AMY ),Resistin,TNF-α,IL-1 β and C reactive protein (CRP) in blood plasma,lung myeloperoxidase ( MPO ) activity,pancreas/body weight ratio and lung wet/dry weight ratio were evaluated.Pancreatic and pulmonary pathology were observed.The expression of resistin in pancreas was detected byimmunohistochemistry.The gene expression of resistin mRNA was investigated by real-time PCR.ResultsBoth prophylactic and therapeutic treatments with rosiglitazone could obviously ameliorate the levels of AMY,resistin,TNF-αt,IL-1β and CRP ( all P ＜ 0.01 ).Compared with the control group,both prophylactic and therapeutic treatment groups were higher( all P ＜ 0.01 ).The prophylactic treatment group was not different from the therapeutic treatment group.Both prophylactic and therapeutic treatments with rosiglitazone could significantly reduce pancreas/body weight ratio,pancreatic pathology,MPO,pulmonary pathology ( all P ＜ 0.01 ).Compared with the SAP group,the expression of resistin mRNA in the prophylactic and therapeutic treatment groups were obviously decreased.ConclusionRosiglitazone could obviously ameliorate pancreatitis and pulmonary injury induced by L-arginine.

Objective To evaluate the clinical value of contrast-enhanced ultrasound (CEUS) in preoperative diagnosis of anal fistula. Methods Forty-five patients with fistula in ano were evaluated by physical examination, then CEUS were peformed by injecting SonoVue through the external opening to enhance the detection of the fistulous track and the internal opening. The results of CEUS were matched with surgical features to establish their accuracy in preoperative assessment of anal fistula. Results Simple typing fistula was found in 19 of 45 patients and 26 patients had complex fistulas. The accurate diagnostic rates by conventional ultrasound of simple typing fistula and complex fistulas were 89. 5% and 61.5%,respectively,the accurate diagnostic rates by CEUS of simple typing fistula and complex fistulas were 94. 7% and 92.3%, respectively, there was no significant difference between conventional ultrasound and CEUS about simple typing fistula( P ＞0.05), and there was significant difference about complex fistulas ( P ＜0. 05). Conclusions CEUS has a good visibility and accurate rate for diagnosis of anal fistula,It plays an important role for operation.

Objective To study the effects and preliminary mechanism of Stattic (Y705),an inhibitor of the signal transducer and activator of transcription-3 (STAT3),on the growth,migration,invasion and radiosensitization of hepatocellular carcinoma cell line Bel-7402.Methods Bel-7402 cells were divided to four groups:blank control group,Stattic treatment group,radiation group,and Stattic combined with radiation group.The cell growth and proliferation were detected by using CCK8 kit.The influence of Stattic on radiation sensitivity of Bel-7402 cells was determined by clone formation assay.The cell migration and invasion ability were tested by scratch migration assay and transwell assay,respectively.The protein expressions of STAT3,p-STAT3,Bax,Bcl-2,Caspase-3,Cleaved Caspase-3,MMP-2 and MMP-9 were quantified by Western blotting assay.Results Stattic significantly inhibited the growth of human hepatocellular carcinoma Bel-7402 cells with a dose-depended manner.The IC50 of Stattic after 48 h treatment was 2.5 μ mol/L.When 1.0 μmol/L Stattic was combined with 8 Gy X-rays,there was a synergistic effect in inhibition of cell proliferation with a inhibition rate of (15.00 ± 1.87) ％ (F =63.30,P ＜ 0.05).Scratch migration assay and transwell invasion assay showed that the migration and invasion abilities of the combination group were significantly reduced.In addition,compared with the radiation group,the SF2,D0and Dq values obtained from survival curve were decreased (t =4.20,6.92,9.32,P ＜0.05),the protein expressions of p-STAT3,MMP-2,MMP-9 were reduced (t =5.32,6.02,13.26,P ＜0.05),the protein expressions of Bax and Cleaved Caspase-3 were increased in the combination group(t =-7.82,-14.09,P ＜ 0.05),meanwhile the protein expressions of Bcl-2 was decreased (t =18.43,P ＜ 0.05).When the concentration of Stattic was 0.5 μmol/L,the radiation sensitization ratio at 2 Gy (SERSF2) was 1.22.Conclusions By inhibiting the activation of the p-STAT3 in Bel-7402 cells,stattic could induce cell apoptosis and increase the radiosensitivity,down regulate MMP-2 and MMP-9 and thereby reduce the invasion and migration of tumor cells.

M2e gene of three copies for H5N1 subtype AIV was synthesized and fused with human mycobacterium tuberculosis hsp70 gene.The fused gene was cloned into the prokaryotic expression vector to get pET-3M2e and pET-3M2e-hsp70.Recombinant protein r3M2e and r3M2e-hsp70 were successfully expressed induced with IPTG and purified with Ni2+-NTA collumn.Following that,the immunity of the recombinant protein was analysized with Western blot.20-day-old AIV non-immunized chickens were vaccined with r3M2e and r3M2e hsp70,at the same time,Trx and KLH-M2e inoculated chickens were served as vector and positive controls.Two weeks after the primary vaccination,every group was boosted with the same vaccine as in the primary vaccination.The humoral immunity of the vaccined chickens was evaluated with antibody detection against M2e,cytopathic suppression test,and indirect fluorescence assay.The cellular immunity was estimated according to lymphocyte subtype analysis with flow cytometry and M2e specific cytokine detection.Four weeks after the boost vaccine,all groups were challenged with 100EID50 AIV of H9N2 subtype,and the virus from swabs was detected with Real-time PCR.Results indicated that r3M2e hsp70 vaccined chicken developed the better humoral and cellular immune response,also,made a better performance compared with r3M2e vaccined group in virus challenge.

Objective:To explore the competency for the assistant general practitioners in China to provide theoretical support for the construction of the post competence model of assistant general practitioners and training and evaluation of assistant general practitioners.Methods:During January 22 to June 18, 2019, Using snowball sampling method and behavioral event interviews, 23 general practitioners and assistant general practitioners were interviewed in China, including 14 general practitioners in the superior performance group and 9 assistant general practitioners in the average performance group. The interview contents were coded and analyzed, and the statistical methods of t test and rank sum test of two independent samples were used to screen competency characteristics and construct the competence model of assistant general practitioners.Results:The total classification consistency and the total coding reliability coefficient was respectively 0.79, 0.87. 59 competency characteristics of assistant general practitioners were obtained including 3 differentiated competency characteristics "Understanding the medical and health system and related policies", "Critical thinking skills" and "General practitioner clinical thinking" and 10 baseline competency characteristics. There was no statistically significant difference between the average performance group and the superior performance group in the total frequency of competency [(29.4±12.7) times to (23.4±7.0) times, t=1.27, P=0.22]. Conclusion:The preliminary competency characteristics of assistant general practitioners have good reliability and can provide references for further exploration of the competency model.

OBJECTIVETo summarize the clinical application result of the selective nerve root blocks in limited operation of the lumbar spine.

METHODSFrom January 2008 to October 2012,68 patients with lumbar spinal canal stenosis with multiple levels were underwent the selective nerve root blocks in limited operation of the lumbar spine,including 47 males and 21 females with an average age of 56 years old ranging from 45 to 80. After never roots blocks,64 cases were positive for limited operation of the lumbar spine; the other 4 cases were negative and abort the operation.

RESULTSThe nerve roots block operation smoothly and no complications related to the nerve roots block occurred. There was no neurologic injury complication in this study. Follow-up period ranged from 16 to 45 months postoperatively (means, 32 months). The recovery effect was calculated with Macnab scores, the result was excellent in 44 cases, good in 18 cases, poor in 1.

CONCLUSIONOperative treatment for lumbar spinal canal stenosis with multiple levels is focused on the areas causing symptomate neural compression rather than prophylactic decompression at areas of nonsymptomatic disease. Application of selective nerve root blocks can accurately judge the responsible vertebral body and pain source and improve the curative effect of limited operation of the lumbar spine

Aged ; Aged, 80 and over ; Female ; Humans ; Lumbar Vertebrae ; surgery ; Male ; Middle Aged ; Nerve Block ; methods ; Spinal Nerve Roots ; Spinal Stenosis ; surgery

OBJECTIVETo summarize the clinical application results of the repair soft tissue defect in contralateral leg with a cross-leg soleus muscle flap pedicle transplantation.

METHODSFrom January 2008 to January 2013, 8 patients with soft-tissue defect in lower leg underwent reconstruction with a cross-leg soleus muscle flap pedicle transplantation (without microvascular anastomoses). There were 7 males and 1 female, aged from 20 to 49 years old with an average of 31.8 years. The operative time after injury was from 2 to 8 weeks with the mean of 46 days. The soleus muscle flap was transposed across to the contralateral leg defect area, then immediate to perform the coverage of the muscle flaps by a meshed split-thickness skin graft. The donor site was closed directly.

RESULTSAll the muscle flaps had survived completely. In one case, recipient area edge had a less exudate from drainage hole everyday, the incision spontaneously was healed after 2 week's changing dressing. Follow-up period ranged form 1.5 to 4 years with an average of 2.5 years postoperatively. The tibia and fibula fractures were healed well. A good contour was achieved at the recipient area. According to LEM standard, 2 cases got excellent results, 5 good and 1 fair.

CONCLUSIONSoleus flap pedicle transplantation is very suitable to repair the soft tissue defect of the injuried leg only one main blood vessel, and can reduce the damage of donor area.

Adult ; Female ; Humans ; Leg Injuries ; surgery ; Male ; Middle Aged ; Muscle, Skeletal ; Soft Tissue Injuries ; surgery ; Surgical Flaps

OBJECTIVETo investigate the effect of ursodeoxycholic acid (UDCA) on liver regeneration after 70% partial hepatectomy (PH) in bile duct obstructive (BDO) rats.

METHODSWistar rats were randomly divided into N-PH group in which normal rats were operated with 70% PH, BDO-PH group in which 70% PH were operated after two week's BDO, and BDO-PH UDCA or sterile saline treatment group in which UDCA (15mg kg(-1) d(-1)) or saline was administrated during BDO and after 70% PH. The hepatic pathological changes were observed. BrdU labeling of hepatocytes, the mRNA expression of intrahepatic hepatocyte growth factor (HGF) and its receptor (Met gene) after 70% PH were measured by immunohistochemical analysis and RT-PCR, respectively.

RESULTSImprovements of hepatic function and pathological changes were induced by UDCA administration after BDO. The expression of hepatic HGF/Met mRNA after 70% PH in BDO-PH UDCA treatment group rats was significantly increased compared with N-PH group rats (P<0.05), BrdU peak labelling of hepatocytes (59.39% +/- 10.82%) in BDO-PH UDCA treatment group rats was significantly higher than that (36.22% +/- 8.37%) in BDO-PH group rats (t=4.149, P<0.01) and without significance compared with N-PH group rats (68.64% +/- 11.26%, t=1.451, P >0.05).

CONCLUSIONSUDCA promotes liver regeneration after 70% PH in BDO rats by remission of hepatic pathological changes and elevating hepatic mRNA expression of HGF and Met.

Animals ; Cholestasis ; genetics ; physiopathology ; surgery ; Gene Expression Regulation ; drug effects ; Hepatectomy ; Hepatocyte Growth Factor ; genetics ; Liver ; physiology ; surgery ; Liver Regeneration ; drug effects ; Male ; Proto-Oncogene Proteins c-met ; genetics ; RNA, Messenger ; drug effects ; genetics ; metabolism ; Rats ; Rats, Wistar ; Ursodeoxycholic Acid ; pharmacology