The Wnt pathway plays a crucial role in skeletal development and is indispensable for determination of OS cell lines. In recent years, experimental evidences on Wnt signaling pathway in OS cell lines and OS animal models, and that of Wnt signaling pathway as a diagnosis and prognosis marker of OS suggested that Wnt signaling pathway plays an important role in the progression, invasion and metastasis of OS. In addition, the strategy and safety evaluation to target Wnt to treat OS are underway. Exploring the significant role of Wnt signaling pathway in OS may aid in personalizing therapeutics to increase patient survival.

T, p.R394W in exon 9.

Objective This study has explored the role of antibody against annexin A2 in patients with antiphospholipid syndrome (APS) and systemic lupus erythematosus (SLE). Methods Using purified recombinant annexin A2, IgG anti-annexin A2 antibody was measured by ELISA in 101 APS patients, 41 SLE patients with thrombosis, 124 SLE patients without thrombosis and 120 healthy controls. Results The positive rate of IgG anti-annexin A2 antibody in APS patients and SLE patients with thrombosis was 21.8%, 26.8%, respectively, they were all significantly higher than in SLE patients without thrombosis (6.5%). IgG anti-annexin A2 antibody was associated with thrombosis and/or pregnancy morbidity (P<0.01). Conclusion Anti-annexin A2 antibody is associated with thrombosis and/or pregnancy mnrbidity. It suggests that anti-annexin A2 antibody may be helpful in identifying in some potential AIRS.

BACKGROUND: During spinal orthopedic repair, the main difficulty is to maximize the correction of the deformity, simultaneously, to reduce the incidence of trauma and complications, especial y to avoid the corresponding spinal nerve injury. OBJECTIVE: To evaluate the curative effect of one-stage posterior pedicle subtraction osteotomy of apical vertebra with transpedicular instrumentation in the treatment of rigid angular kyphosis of thoracolumbar spine. METHODS: We retrospectively analyzed the data of 42 cases of rigid angular kyphosis of thoracolumbar spine that were treated by one-stage posterior pedicle subtraction osteotomy of apical vertebra with transpedicular instrumentation. Al patients received detailed imaging examination before and after operation. Kyphosis angle, Frankel grading and perioperative complications were recorded in al patients. X-ray films or CT films showed the bone graft fusion during fol ow-up. RESULTS AND CONCLUSION: Patients were fol owed up for 10-36 months after treatment. The average time of bone graft fusion was 5.1 months. Cobb’s angle of kyphosis was corrected from 78.4° (38°-110°) preoperatively to 7°(-8°-24°) at 10 days after treatment. The correction rate was 90%. The average angle during final fol ow-up was 7.9°, with an average loss of 0.9°. In 16 paresis patients, Frankel grading results showed grade B in 0 case, grade C in 3 cases, grade D in 5 cases, and grade E in 8 cases during final fol ow-up, showing significant improvement as compared with that pre-treatment (P < 0.05). Among 42 patients, 5 cases had complications. At 7 months after treatment, there were screw and titanium rod loosening at the distal end of the fusion segment in 1 case, cerebrospinal fluid leakage in 2 cases, transient double lower limb weakness in 1 case, pain in one side of lower limb in 1 case, and no severe complications appeared. These results verified that one-stage posterior pedicle subtraction osteotomy of apical vertebra with transpedicular instrumentation could achieve satisfactory clinical outcomes in rigid angular kyphosis of thoracolumbar spine. The internal fixation was stable and with a high fusion rate and few complications. The medium-term effect was satisfactory.

AIM: To investigate the cell cycle arrest ind uced by hypoxia, hypoxia inducible factor-1 and their possible mechanism in huma n ovarian cancer cell line SW626. METHODS: CoCl 2, a chemical inducer of hypoxia and hypoxic cell culture chamber were used to induce chemical and physical hypoxia in human ovar ian cancer cell line SW626. The method of ‘decoy’ was used to block the functi on of HIF-1? because it acts as the core sequence of the target gene as a compe titor combined to the HIF-1?. The cells were divided into group A1 (normal oxyg en), A2 (normal oxygen plus HIF-1? decoy), B1 (CoCl 2), B2 (CoCl 2 plus HIF-1 ? decoy), C1 (hypoxia) and C2 (hypoxia plus HIF-1?). The expression of the HIF -1? protein, mRNA and cell cycle analysis were detected by Western blotting, RT -PCR and flow cytometry (FCM). RESULTS: The expression level of HIF-1? protein in group B1 (3 .75?1.31) and group C1 (3.48?1.01) was significantly higher than that in g roup A1 (0.97?0.31) (P0.05). FCM showed that the G 0/ G 1 phase was markedly increased in group B1 (81.78?24.33) and group C1 (77 .62?22.76) and was significantly higher than that in group A1 (49.49?18.54 ) (P0.05). CONCLUSION: Both CoCl 2 and physical hypoxia could distinctly i nduce cell cycle arrest in G 0/G 1 phase and the expression of HIF-1? in huma n ovarian cancer cell line SW626. HIF-1? plays an important role in cell cycle arrest induced by hypoxia in human ovarian cancer cell line SW626.

Objective To optimize the formulation of a new kind of ultrasound contrast agents carrying the sensitizer of hematoporphyrin(HP)with[Poly(lactic-co-glycolic acid),PLGA]for material.Methods The technique of double emulsion was applied to produce HP loaded PLGA ultrasound microbubbles,which was optimized through orthogonal test using encapsulation efficiency for the detected index.Then morphology and distribution of HP-PLGA microbubbles were observed through light microscope and scaning electron microscope.The size,Zeta potential and the properties of releasing behavior and ultrasound imaging in vitro of Hp-PLGA contrast agents were detected.Results The optimization parameters were picked out as 10 mg/ml for concentration of HP,40 mg for PLGA,and 1/5 for volume ratio of water inside to dichloromethane.The optimized HP-PLGA contrast agents were spheric with the mean size of 602.3 nm,and Zeta potentiaI of-(17.1±1.6)mV.The drug loading and encapsulation efficiency of HP-PLGA were(2.15±0.15)%and(63.5±2.6)%,respectively.And the releasing behavior of HP-PLGA contrast agents in vitro was that after an obvious release of about 35.1%in former 24 h,there were 86.5%HP-PLGA released within 14 days.The ultrasound imaging of HP-PLGA could be enhanced obviously in vitro.Conclusions The self-made HP-PLGA ultrasound microbubble might be a useful tool for delivering sensitizer and thus provide a novel strategy for sonodynamic therapy on tumor.

OBJECTIVETo observe analgesic and sedative effect of acupuncture combined with medicine (ACM) on patients undergiong cardiac surgery.

METHODSA total of 50 patients with cardiac surgery from January 2012 to October 2014 were randomly assigned to the conventional analgesia group (group A) and the ACM analgesia group (group B), 25 in each group. Patients in group A were subjected to analgesia and sedation by injecting dexmedetomidine, while patients in group B were subjected to analgesia and sedation by electro-acupuncture [EA, Shenting (GV24); Yintang (EX-HN3)] combined with injection of dexmedetomidine. Morphine hydrochloride injection was performed when analgesia and sedation effect was ineffective in the two groups. The indicators of patients at different time points in the two groups were observed, such as static and dynamic VAS scores, SAS scores, mean arterial pressure (MAP), heart rate (HR), oxygen saturation (SpO2). The injection dosage of dexmedetomidine and morphine hydrochloride, analgesia satisfaction rate, sedation satisfaction rate, the incidences of adverse reactions during treatment such as bradycardia and low blood pressure, mechanical ventilation time, ICU time, and hospitalization expense were observed and recorded in the two groups.

RESULTSThere was no statistical difference in static and dynamic VAS scores, SAS score, MAP, HR and SpO2 between the two groups at different time points (P > 0.05). The injection dosage of dexmedetomidine and morphine hydrochloride was significantly reduced in group B than in group A (P < 0.05). The analgesia satisfaction rate of patients in group B was much higher than that in group A (P < 0.05). The incidence of bradycardia also obviously decreased more in group B than in group A (P < 0.05). There was no statistical difference in patients' sedation satisfaction rate, incidences of low blood pressure, delirium, vomiting; mechanical ventilation time, ICU time, or hospitalization expense between the two groups (P > 0.05).

CONCLUSIONThe analgesia method of ACM could reduce the dosage of traditional analgesic drugs and the occurrence of partial adverse reactions.

Acupuncture Analgesia ; Analgesia ; methods ; Analgesics ; therapeutic use ; Cardiac Surgical Procedures ; Dexmedetomidine ; therapeutic use ; Electroacupuncture ; Heart Rate ; Humans ; Hypnotics and Sedatives ; therapeutic use ; Morphine ; therapeutic use ; Pain ; prevention & control ; Pain Management ; methods ; Respiration, Artificial

OBJECTIVE To investigate the role of several xenobiotic metabolism-associated CYP450 isoforms in the auto-activation of hepatic stellate cells(HSCs) invitro. METHODS HSCs were isolated from adult Wistar rats and cultured on plastic as an in vitroauto-activation model. Positive expression of α-smooth muscle actin(α-SMA)was used as an activated marker of HSCs and detected by immunocytochemical staining in HSCs cultured for 1,2,5 or 11 d. The expressions of CYP450 isoforms were analyzed by real-time RT-PCR in the HSCs. RESULTS The immunocytochemical stai-ning showed no α-SMA expression in HSCs cultured for 1 d,while its expression gradually increased during culture since day 2. ln terms of α-SMA expression,HSCs cultured for 1,2,5,and 11 d were classified as the quiescent,early,middle and later stages of activation,respectively. The RT-PCR results revealed that CYP1B1,CYP2B1/ 2,and CYP2E1 mRNA were expressed at high levels in the early stage of HSCs activation(at day 2),which were 2.1-,1.6-,and 23.9-fold those in the quiescent HSCs(day 1),respectively. Further study revealed that mRNA expressions of these up-regulated CYPs in the early stage of activation were diminished at the subsequent two stages. The levels of CYP1A1 and CYP1A2 mRNA decreased constantly throughtout the activation process. CONCLUSION Multiple xenobi-otic metabolism-associated CYP450 isoforms might be involved in the auto-activation of rat HSCs invitro.

Objective Enzyme triggered multi unit colon targeting mini tablet of indomethacin were prepared,in order to improve the target treatment of colon disease.Methods Different proportion of enteric layer and chitosan layer were screened to optimize the prescription.The colon targeting mini tablets were prepared by direct compression method.The drug release properties were investigated in different release medium.Rats were used to investigate the distribution of tissue in vivo.The Beagle dogs were used to study the pharmacokinetics and bioavailability.Results The optimum chitosan layer prescription:coating liquid concentration was 2％,plasticizer three citric acid ethyl ester (TEC) was 15％,an anti sticking agent amount of talc was 30％,coating weight was 5％;Enteric layer prescription:coating liquid solid content was 20％,plasticizer content of TEC was 5％,anti sticking agent talc powder dosage was 40％,coating weight was 3％.The chitosan multi unit colon targeted preparation seldom released in rat stomach and small intestine,released slowly in colon.The pharmacokinetics parameters in Beagle dogs were:Cmax =(3.25 + 0.672) mg·L-1,tmax =(2.00 + 0.014) h,AUC(0.∞) =(10.2 +0.871) mg·L-1 ·h,MRT (0-∞) =(2.82 + 0.180) h,CL =(2.46 + 0.202) L·h-1 ·kg-1.The release time of mini tablets for colon targeted was significantly prolonged and preserved stable blood concentration.Conclusion The enzyme triggered multi unit colon targeting mini tablet of indomethacin showed good target to colon and sustained release effect,providing an important reference for the development of preparation of indomethacin for the treatment of colon disease.

The ultrasonographic appearances of osteosarcomas and the roles of ultrasonography in the diagnosis and surgical staging of osteosarcomas were investigated. A comparative study was performed on 45 cases of osteosarcomas by ultrasonography and radiography. Bony changes, periosteal reaction and soft tissue mass were evaluated for each lesion. The results showed that ultrasonography revealed a solid mass around bone in 42 patients, bone destruction in 24 patients and periosteal reaction in 16 patients. Plain radiographs showed bony changes in 44 patients and no bony change in remaining one patient, shadowing of soft tissue swelling in 30 patients, and pulmonary metastases in 3 patients. Surgical biopsy and pathological examination confirmed osteosarcoma in all 45 patients. Soft tissue mass was confirmed in 42 patients surgically. The diagnostic accuracy of soft tissue masses by ultrasonography and radiography was 100 % (42/42) and 71.4 % (30/42), respectively. The positive rate of ultrasonography and radiography in displaying bony changes was 53.3 % (24/45) and 97.8 % (44/45), respectively. In conclusion, in the detection of soft tissue mass of osteosarcoma, ultrasonography is superior to radiography, and in displaying bony changes of osteosarcomas, radiography is superior to ultrasonography. So it may come to a conclusion that plain radiography combined with ultrasonography can completely display the bony and soft tissue lesion of osteosarcomas.