Objective To evaluate the diagnostic value of velocity parameters of Tardus-Parvus for the detection of renal artery stenosis ( RAS) ( diameter reduction ≥50%) and to determine the useful cutoffs for these parameters .Methods A study group was composed of 221 renal arteries that were detected Tardus-Parvus by color Doppler flow imaging and were referred to abdomino-aorto-re-nal arteriography afterwards .Five Doppler parameters including the peak systolic velocity ( PSV ) , end-diastolic minimum velocity (EDV), resistance index (RI), acceleration time (AT), and accelerated velocity (AC) from each location including renal aorta ( MRA) , segmental artery ( SRA) , interlobar artery ( IRA) , and arcuate artery ( ARA) were archived and compared among the differ-ent groups .Renal artery angiography showed arterial canon reduced 50% or higher RAS .Arteries were considered stenosed on renal arteriography if there was a diameter reduction of greater than 50%.Statistical analysis to determine the best parameter for predicting a RAS was performed with the receiver operating characteristic ( ROC) curves.The sensitivity, specificity, and negative and positive predicting values at various cutoffs were calculated .Results Renal artery stenosis degree was less than 50% in 16 cases, 50%~99%in 197 cases, completely occluded in 2 cases, and no stenosis in 6 case by renal arteriography .For RAS with inner diameter re-duction of 50%or more, the ROC curve analysis showed renal artery flow velocity had a good sensitivity and specificity , 50%~99%of the RAS had optimal threshold value in PSV 20 cm/s, EDV 10 cm/s, RI 0.50, AT 0.09 s, and AC 1.5 m/s2.Conclusions Tardus-Parvus had high specificity and sensitivity for diagnosis of stenosis rate in more than 50% of the RAS, low sensitivity for the narrow degree in 0~49%, and no clinical value for the renal artery occlusion .

Objective To investigate the effect of histone deacetylase inhibitor LBH589 on proliferation,apoptosis and drug resistance of chemoresistant acute myeloid leukemia cells HL60/ADM.Methods HL60/ADM cells were treated with LBH589.Proliferation,apoptosis and adriamycin IC50 were evaluated by MTT assay and AnnexinV-FITC/PI stain.The change in MRP1 expression and intercellular adriamycin accumulatiom were analyzed by flow cytometry.Results Effective proliferative inhibition and apoptotic induction in HL60/ADM cells were observed after treatment with 10-80 nmol/L LBH589 with maximal effect detected after treatment with 70 nmol/L LBH589 for 60 hours.However,inhibition ratio remain unchanged with the further increase of drug dose and incubation time (P ＞ 0.05).Downregulation of MRP1 [(93.90±4.20) ％ vs (76.19±6.53) ％],upregulation of adriamycin accumulation [(8.53±0.68) ％ vs (25.67±1.34) ％] and decrease in adriamycin IC50 [(6.833±0.319) μg/ml vs (1.382±0.104) μg/ml] were induced by the treatment with 20 nmol/L LBH589 (P ＜ 0.01),whose reversal fold was 4.9.The expression of acetylated histone 3 after treatment with LBH589 was higher than that before treatment (P ＜ 0.01).However,relative p-Akt levels after treatment for 24 h and 48 h were 1.07±0.09 and 0.59±0.01,respectively,which were lower than that before treatment (2.03±0.12) (P ＜ 0.01).Meanwhile,expression levels of p53 were 0.57±0.04 and 1.31±0.09,respectively,which were higher than that before treatment (0.21 ±0.02) (P ＜ 0.01).Conclusion Treatment with LBH589 has the capability of inhibiting proliferation and inducing apoptosis,as well as increasing intercellular adriamycin accumulation and sensitivity through downregulation of MRP1 expression and inhibition of PI3K-Akt signaling pathway in HL60/ADM cells.

Objective To study changes of the autoimmune antibody level in patients after autologous hematopoietic stem cell transplantation(CD_(34)~+).Methods Twelve patients with SLE received autologous hematopoietic stem cell transplantation.All they survived and their immune system were recoverd after a period of time.The serum autoimmune antibody levels were measured before and after the transplantation,Results The antibody levels became normal 6 months after transplantation.Conclusion Autologous hematopoietic stem cell transplantation can effectively reduces the level of autoimmune antibody in patients with SLE.

[Objective]To investigate the effect and mechanism of Shuxuetong and its main component hirudin on the apoptosis of cerebellar granule neurons(CGNs)in Sprague-Dawley(SD)rats.[Methods]CGNs incubated in vitro for 7 days were divided into survival control group or 25 K group(cultured in medium containing 25 mmol/L KCL)and apopto-sis group or 5 K group(cultured in medium containing 5 mmol/L KCL).CGNs were separately treated with proportionally diluted and different concentrations of Shuxuetong(1/50,1/40,1/30,1/20 and 1/10)and the corresponding different con-centrations of hirudin(2,2.5,3.34,5 and 10 U/mL).Hoechst staining was performed to analyze the apoptosis.Western blot was used to detect the expression levels of Cleaved Caspase-3,Bim and VEGF.[Results]Hoechst staining showed that 5 K group had a higher apoptosis rate than 25 K group.In 25 K group,there was no significant change in the apoptosis rate between neurons treated with different concentrations of Shuxuetong and hirudin,but significant changes was found in 5 K group and the higher the concentration,the lower the apoptosis rate.Western blot results revealed that,compared with control neurons in 5 K group,Shuxuetong injection and hirudin treatments resulted in a decrease of Cleaved Caspase-3 and Bim expression,but an increase of VEGF protein.[Conclusions]Shuxuetong and its main component hirudin inhibits the apoptosis of CGNs through suppressing proapoptotic BH3-only protein Bim.

Objective:To explore the risk factors of pinhole infection in patients with external fixators, and build a risk prediction model.Methods:From January 2018 to June 2019, the data of patients ( n=300) with external fixators in the Department of Trauma and Orthopedics, South Hospital, South Medical University, were selected by retrospective survey, and were divided into infection group and non-infection group according to whether pinhole infection occurred in the postoperative case records. Single factor analysis and Logistic regression analysis were used to establish the risk factors of pinhole infection and its prediction model. The grade of risk prediction was constructed by the assignment method. Results:Among 300 patients with external fixators, 103 (34.33%) had pinhole infection and 197 (65.67%) had no infection. Logistic regression analysis showed that basic disease [ OR=4.726 (one of diabetes, pulmonary infection), 17.053 (two of diabetes, pulmonary infection, cardiovascular diseases) ], postoperative albumin [ OR=0.082 (<25 g/L) ], postoperative hemoglobin [ OR=3.715 (>90-120 g/L), 9.720 (>60-90 g/L), 7.338 (30~60 g/L) ], intraoperative bleeding volume [ OR=2.196 (200-400 ml), OR=3.256 (>400 ml) ] and the type of disinfectant [ OR=3.897 (chlorhexidine), 3.625 (iodophor + chlorhexidine) ] were risk factors for pinhole infection in patients with external fixators ( P<0.05). The constructed model was divided into high-risk group (≥ 7 points), higher-risk group (5-6 points), medium-risk group (4 points), low-risk group (3 points) and lower-risk group (0-2 points) . Conclusions:The model can well predict the risk of pinhole infection of orthopedic external fixator, provide reference for medical and nursing staff to identify the risk of external fixation infection in time, and prevent the occurrence of infection as soon as possible.

AIM:To study the expression of signal transduction molecules in the striatum G protein protein 4 (RGS4) and dopamine D2 receptor (D2) in conditioned place preference (CPP) rats treated with methamphetamine (meth).METHODS:METH dependence CPP model was established (1 week and 2 weeks of METH dependence groups),The protein expression of RGS4 and D2,inhibitory G protein alpha-subunit (Gαi),mitogenactivated protein kinase (MAPK) in striatum were determined by Western blotting (WB).The changes of cyclic adenosine monophosphate (cAMP) content in striatum of rats were determined by enzyme linked immunosorbent assay (ELISA).RESULTS:Compared with saline control group,the average time of rats in the methamphetamine-paired chamber for two groups was increased (P ＜ 0.05).Compared with saline control group,RGS4 protein expressions in the two METH dependent groups were reduced (P ＜0.01);compared with 1 week of METH dependence group,that of 2 weeks group was reduced significantly(P ＜ 0.05).D2,Gαi,MAPK protein and cAMP expressions in the two METH dependent groups were increased (P ＜ 0.01);compared with 1 week of METH dependence group,those of 2 weeks were increased significantly (P ＜ 0.05).CONCLUSION:RGS4 and D2 receptor signaling pathways in striatum have changed in METH dependent rats,RGS4 may be involved in the regulation of METH-dependent D2 receptor signaling pathway in METH dependent rats.

OBJECTIVETo evaluate the early hematologic, cytogenetic and molecular responses in newly diagnosed patients with chronic myelogenous leukemia in chronic phase（CML-CP）and initially treated with a generic imatinib（Xinwei）, manufactured by Jiansu Hansoh Pharmaceutical Group Co., Ltd.

METHODS107 newly diagnosed patients of CML-CP, whose ages were above 18- year- old and who had never received any tyrosine kinase inhibitor（TKI）were treated with Xinwei 400 mg QD. The hematologic, cytogenetic and molecular responses were assessed at 3- and 6-month, and adverse effects were evaluated throughout the study.

RESULTS107 patients were treated with Xinwei for at least 3 months, 54 of them were treated for 6 months or more. At 3- month, the complete hematologic responses（CHR）rate were 98.1%（105/107）; 47/57（82.5%） patients achieved major cytogenetic response（MCyR）, and 20/57 （35.1%） patients complete cytogenetic response（CCyR）; BCR- ABLIS was ≤10% in 77/106 patients （72.6%）, 11 of them（10.4%）achieved major molecular response（MMR, BCR-ABLIS was ≤0.1%）. At 6-month, the CHR rate was 100%（54/54）; 28/39 patients（71.8%）achieved CCyR; BCR-ABLIS was ≤1% in 37/54 patients （68.5% ）, 18 of them （33.3% ） achieved MMR. The grade Ⅲ leukopenia, thrombocytopenia and anemia rates were 19.5%, 23.0% and 13.8%, respectively. No grade Ⅳ hematologic toxicity occurred. The common non- hematologic toxicities were edema（74.7%）, nausea（48.3%）, bone pain（42.5%）, rash（36.8%）, diarrhea（34.5%）, fever（23.0%）, cramp（11.5%）and impaired liver function （3.4%）. No patient experienced grade Ⅳ non- hematologic toxicity. No adverse effects related death occurred.

CONCLUSIONOur results revealed the excellent early haematology, cytogenetic and molecular responses and safety of Xinwei in treating patients with CML-CP.

Anemia ; Antineoplastic Combined Chemotherapy Protocols ; Cytogenetics ; Drugs, Generic ; Humans ; Imatinib Mesylate ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive ; Prospective Studies ; Protein Kinase Inhibitors ; Remission Induction ; Thrombocytopenia ; Treatment Outcome