The success of ATRA and ATO in APL treatment furuishes the first model of molecular target-based induction of differentiation and apoptosis.Two drugs all target PML-RARα oncoprotein through different moieties and induce APL cells differentiation and apoptosis.In acute myeloid leukemia M2b,we reveal that gain-of-function of C-kit coexists with persistent AML1-ETO,suggesting that abnormal C-kit may serve as a therapeutic target in AML L-M2b Oridonin becomes a potential candidate target drug which specifically degrades AML1-ETO protein. Experiment in vitro proves the combinatorial effectiveness of imatinib and cytarabin in the treatment of chronic myelogenous leukemia(CML).Imatinib is an inhibitor of abnormal protein tyrosine kinases activity. While arsenic agent triggers the degradation of bcr-abl, and combination of the two drugs in treating CML leads to a better outcome.

Solanum Nigrum is a kind of dicotyledon solanaceae annual herb, and alkaloids are its main bioactive constituents, with good antitumor activity. The current extraction methods for alkaloids include solvent extraction, ultrasonic extraction, microwave extraction, supercritical fluid extraction, and column chromatography etc, while the detection methods include acid dye colorimetry, thin layer scanning, high performance liquid chromatography, reversed-phase high performance liquid chromatography, and ultra-high performance liquid chromatography etc. This article reviewed the research progress in extraction and detection methods of alkaloid from Solanum Nigrum in recent years, so as to provide references for further research and development of alkaloid from Solanum Nigrum.

Objective To compare the results of one-stage bilateral total hip arthroplasty (THA) and staged bilateral THA, and to determine the safety and efficacy of one-stage simultaneous bilateral THA. Methods The patients who were indicated for with bilateral THA were divided into 2 groups. Gourp A included 87 patients with one-stage simultaneous bilateral THA, and Group B included 31 patients with staged bilateral THA. The operating time, the amount of blood loss, the amount of blood transfusion necessary, post-operation functional scores, and perioperative complications were compared between group A and group B. Result There was no significant difference between group A and group B. Conclusion One-stage simultaneous bilateral total hip arthroplasty was a safe and efficacious procedure.

Objective Experimental and clinical data suggest that fixed element knee designs a re not able to both supply adequate mobility and eliminate unnecessary constra int forces,as well as provide low contact stresses compatible with pr olonged life of UHMWPE bearing components.The present study investi-gated the preliminary clinical outc ome of TACK(Total Articulating Cementless Knee)system,a new design of mobile-bearing knee prosthesis.Methods Eighty-eight knees in 61patients underwent total knee replace-ment by using TACK were reviewed.Forty-five knees of 31patients were followed-up at least one year.The HSS knee rating score system as well a s X-ray films were used to evaluate th e clinical results with the mean follow-up period of 25.4months.Results At the latest follow-up examination,the rate of good to excellent clinical results was 96.4%.The range of motion was improved from 0-6.5-68.3degrees preoperatively to0-2-88.4degrees at the latest follo w-up.The complications such as oste olysis around the prosthesis,prosthetic loosening and dislocation of meniscus bearings were not found.Conclusion The TACK Knee is a third generation knee system design ed to introduce movable bearings between the metal tibial and femoral components that would reduce the sur face and subsurface stress states at the bearing surfaces and at the bone-implant interfaces by maximiz ing the conformity of the tibial and f emoral components and allowing mo-bility of the bearing surface.In an a verage of more than two years experie nce,it was observed that there was no aseptic loosening of the componen ts.A long term follow-up is obviously necessary to make more precise statement about this knee replaceme nt system.

Objective To explore the influence of treatment duration on the prognosis of Cryptococcus neoformans meningitis (CNM). Methods The clinical data of 30 patients with CNM were retrospectively analyzed. The time of Cryptococcus neoformans culture in cerebrospinal fluid turned to be negative were compared between patients with and without amphotericin B (AmB)endoneurilemma injection to determine whether endoneurilemma injection would make any difference on prognosis of CNM. Statistic analysis was performed by t test. Results The time of Cryptococcus neoformans culture in cerebrospinal fluid turned to be negative was (22. 73 ± 10. 00) days in 11patients with AmB endoneurilemma injection compared to (18. 92±7. 26) days in 13 patients without endoneurilemma injection. The difference was not statistically significant (t = 0. 172,P>0. 05). The effective rate was 45. 8% after 2-week anti Cryptococcus neoformans treatment, which increased to 100.0% after 6-week treatment. However, the curative rate at week 6 of treatment was 0. All ten patients who finished the treatment (three to four months' treatment) were acquired effective.Conclusion Treatment with standard dosage and adequate duration is crucial in improving the prognosis of Cryptococcus neoformans meningitis.

Objective To compare transfection properties of two different fluorescently labeled PIK3CA siR-NA and to screen out PIK3CA siRNA with high transfection efficiency and strong anti-quenching ability.Methods Two different fluorescently labeled PIK3CA siRNA was transfected into gastric cancer cell BGC-823 by Lipofectamine 2000.The distribution and quenching of fluorescence were observed by inverted fluorescence microscope.Image J software was used to analyze their transfection efficiency.Real-time quantitative PCR was performed to detect the effect of different fluorescently labeled PIK3CA siRNA on PIK3CA mRNA expression.Results The transfection efficiency and anti-quenching ability of two different fluorescently labeled PIK3CA siRNA were different under the same transfection conditions.The transfection efficiency showed no significant differences between Cy3 or FAM labeled PIK3CA siRNA and negative control siRNA(P ＞ 0.05),but the transfection efficiency of Cy3 labeled PIK3CA siRNA and negative control siRNA was significantly higher than the FAM labeled (P ＜ 0.05).Inhibitory efficacy of target mRNA expression induced by Cy3 labeled PIK3CA siRNA was significantly higher than that of FAM labeled PIK3CA siRNA.Conclusion Cy3 labeled PIK3CA siRNA could act as a good tracer and provide an important evidence for further construction of Cy3 labeled PIK3CA siRNA nanoparticle.

The training of teaching ability is an important context of master course.Pathology Department of Xiang Ya School of Medicine take experimental teaching practice as the important way to improve their pathological experimental teaching skill.In this paper we introduced our experience.

Objective To evaluate the helical CT diagnostic value of primary retroperitoneal neoplasm(PRN). Methods 32 cases of PRN confirmed by operation and pathology were retrospectively analyzed. Plain and enhanced CT scan were perfomed in 28 cases,and only 4 cases underwent plain CT scans. Results Of 32 cases,15 were benign tumor and 17 cases were malignant tumor.Among them ,16 cases were mesenchymal tissue-origin(11 cases were malignant neoplasm), 10 cases were nervous tissue-origin(3 cases were malignant neoplasm),3 cases were rudimental embryonal tissue-origin(all benign), and the source of unknown-origin were 3cases(all malignant neoplasm).To be correctly localized was 28 cases(87.5%) and correctly qualitative diagnosis of the tumor was 20 cases (62.5%) by CT before operation. Conclusion PRNs have many typies, helical CT provides informations in both position and characteristics before operation.

Objective To investigate the risk of falling and nutritional status in elderly surgical patients,and to assess the correlation between them.Methods Patients aged ≥65 in Department of General Surgery of Beijing Hospital between January and June 2015 were enrolled in this study.The Morse Fall Scale was used to evaluate the risk of falling.Anthropometrics,body composition,and Nutritional Risk Screening 2002 (NRS 2002) scores were collected to evaluate the nutritional status of the patients.The correlation between risk of falling and nutritional status was analyzed.Results A total of 383 patients were included,including 314 cases under 80 (65-79 years) and 69 cases ≥ 80.Patients ≥ 80 years showed significantly lower grip [(24.53 ± 8.09)kgvs.(30.57 ±8.48)kg,P＜0.05] and4-meter gait speed [(0.66 ±0.19)m/s vs.(0.84 ± 0.20) m/s,P ＜ 0.05],but significantly increased undemutrition [15.9％ (11/69) vs.7.0％ (22/314),P ＜ 0.05] and nutritional risk [56.5％ (39/69) vs.38.2％ (120/314),P ＜0.05].Altogether 33.9％ of the patients (130/383) were at high risk of falling,and the prevalence was significantly higher in patients ≥80 than in patients ＜ 80 [44.9％ (31/69) vs.31.5％ (99/314),P =0.036].Compared with patients not at high risk of falling,high-risk patients had lower body mass index [(22.33 ± 1.82) kg/m2 vs.(23.76 ± 3.26) kg/m2] and grip [(24.95 ± 8.56) kg vs.(30.72 ± 8.39) kg],but higher prevalence of nutritional risk [46.9％ (61/130) vs.38.7％ (98/253)] (all P＜0.05).Conclusions Eldedy surgical patients have a high risk of falling,which may be related with their nutritional status.Nursing and nutrition intervention should be emphasized in there patients to prevent falling and improve clinical outcome.

Objective To explore the value of helical computed tomography (CT) in differential diagnosis of xanthogranulomatous cholecystitis (XGC) and wall-thicked gallbladder cancer (GBC).Methods The CT signs of 18 XGCs and 20 wall-thicked GBCs were retrospectively analyzed.The maximum thickness of gallbladder wall, intramural hypoattenuated nodules, mucosal line of gallbladder inner wall,patterns of enhancement of thickened wall,whether combined with stones,the pericholecystic adjacent liver tissue involvement and biliary tract obstruction were observed.Measurement data were analyzed by independent sample t test and count date were analyzed by Fisher precisely the probability method.Results The mean maximum thickness of the gallbladder wall of XGC and wall-thicked GBC was (22.11±10.19) mm and (20.55±7.94) mm respectively,and there was no statistical significance (t=0.530,P=0.600).Eighteen cases of XGC and five cases of wall- thicked GBC patients were with intramural hypoattenuated nodules (Fisher precisely the probability method,P＜0.01 ),14 cases of XGC and six cases of GBC were with integrated mucosal line (Fisher precisely the probability method,P =0.004 ),three cases of XGC and 12 cases of GBC were with biliary tract obstruction (Fisher precisely the probability method,P=0.009).There was no statistical significance in the CT signs of the range of wall thickness,patterns of enhancement and enhanced degree of thickened wall,adjacent liver tissue involvement, lymphadenopathy, combined with gallbladder or bile duct stone between XGC and wall-thicked GBC patients (Fisher precisely the probability method,all P ＞ 0.05).Conclusions The thickened gallbladder wall with intramural hypoattenuated nodules and integrated gallbladder inner wall mucosal line were characteristic signs for diagnosing XGC.Helical CT scanning can provide evidence for differential diagnosis in XGC and wall- thicked GBC.