OBJECTIVE:To establish a method for detecting bacterial endotoxins in methylthioninium chloride injection (MCI) quantitatively. METHODS: Kinetic turbidimetric limulus test was applied to detect bacterial endotoxins in MCI quantitatively, and compared with gel-clot method. RESULTS: MCI was un-interfered with the test for bacterial endotoxins at the concentration of 0.125 mg?mL-1; the content of bacterial endotoxins in all samples tested (10 mg?mL-1) were not more than 0.25 EU?mg -1, which were in accordance with the result of gel-clot method. CONCLUSIONS: Kinetic turbidimetric limulus test provides a new way to detect bacterial endotoxins in MCI quantitatively.

ObjectiveTo investigate the effects of erythro po ietin on prevention hypoxic-ischemic brain damage (HIBD) and activation of Casp ase-3 in Hippocampal CA1 region in newborn rats. Methods7 d Sprague-Dawley rats were divided into hypoxic-ischemic (HI) group (n=11), recombinant human erythropoietin (rhEPO) treated group (n=11), and sham-op erated control group (n=9). HIBD was established in both HI group and rhEPO treated group. The number of rats animals with spontaneous left-turn in two gro ups was counted respectively at subsequent different time: 0, 6, 12 and 24 h. Th e expression and distribution of activated Caspase-3 was detected by immunohist ochemistry analysis. The positive cells were calculated in hippocampal CA1 regio n of every groups.ResultsTwo rats in HI group and one in rhE PO treated group died from continuous convulsion during hypoxia. all survival ra ts in up two groups had spontaneously left-turn Compared with HI group, the r ate of spontaneous left-turn was dramatically lower in rhEPO treated group (HI group vs rhEPO treated group, 1/10 vs 6/9, P=0.0198) at 24 h after hypox ia. The positive stained cells were distributed dispersively in the brain of con trol group, and more intensively in the hippocampus and cerebral cortex of the o ther two groups. In CA1 region, the number of positive cells in HI group, was si gnificant higher than that in control group ( 41.38 ?2.09 vs 10.52?2.70 , P

To analyze and summarize the clinicopathological features of renal inflammatory lesions which were easily misdiagnosed as renal tumors.Methods The cases from March 2006 to August 2015 in the Department of Pathology at Xijing Hospital were analyzed,retrospectively.Due to the diagnosis made by clinicians that these were renal (including renal pelvic) tumors,all cases had undergone radical nephrectomy or tumor enucleation.Among them,several inflammatory lesions were confirmed,and were combined with the patients' clinicopathological data and literature review to investigate the diagnosis and differential diagnosis.Results Of the 1 195 cases,only 6 cases (less than 1％) were renal inflammatory lesions,named as xanthogranulomatous pyelonephritis (2 cases),renal malakoplakia (1 case),renal tuberculosis (1 case),IgG4-related tubulointerstitial nephritis (1 case),and renal Wegener's granulomatosis (1 case).These diseases occurred in two males and four females (aged 14 to 55 years).All patients underwent radical nephrectomy due to the detected unilateral solitary renal mass in the imaging examination.Conclusion Renal inflammatory lesions are very rare,which show masses that are easily misdiagnosed as neoplastic lesions.Some of them have similar histological features.As the differences of treatment,a sufficient understanding of the clinicopathological features of these diseases is important to make a correct diagnosis.

Objective To analyze the predictive factors of fever after percutaneous renal stone surgery,and to provide reference for clinical treatment.Methods A total of 147 patients underwent percutaneous nephrolithotomy in after operation was chosen in the Department of Urology in our hospital from January 2014 to January 2016.According to the existence of fever,patients were divided into fever (n =25,heating rate 17.0％) and control (n =122) groups.Preoperative information were collected,including age,gender,preoperative serum creatinine,stone size and shape,the involvement of calyceal number,water,urine culture results,operative time,blood loss,intraoperative perfusion volume,pyonephrosis,puncture channel length,hospitalization time and other information including intraoperative,postoperative information including fever,and postoperative renal fistula complications if there is information.SPSS 18.0 was used for statistical analysis.Results The fever group stone surface area,CT value affected calyx number,stone shape,stone properties,the involvement of calyceal number,degree of hydronephrosis,operative time,intraoperative blood loss,intraoperative perfusion,hospitalization time,and renal fistula complication rates were higher than the control group (P ＜ 0.05).There were no significant differences between two groups (P ＞0.05).The results of Logistic regression analysis found that the stone surface area (OR =5.19),stone,stone shape (OR =7.86) properties (OR =3.87),operation time (OR =5.68),intraoperative perfusion (OR =5.24),and renal fistula complications (OR =2.65) for the influence factors of fever.Conclusions The stone surface area is large,stone nature infection stones,stone shape for staghorn calculi,longer operation time,and intraoperative perfusion of large renal fistula complications were more prone to postoperative fever in postoperative.

The study aimed to investigate the effects of small ubiquitin-related modifier (SUMO) specific protease 1 (SENP1) on human PXR-mediated MDR1 transcriptional activity and mRNA expression. Empty vector and expression plasmids, including PXR, SENP1 and SENP1 mutant (SENP1m) were transiently transfected into HepG2 and LS174T cells using Lipo2000. Transcriptional activity was detected by dual luciferase reporter gene assay, and mRNA level was measured using real-time polymerase chain reaction. The results showed that SENP1 could remarkably reduce the rifampicin (RIF)-induced MDR1 reporter activity and mRNA level in hPXR over expressed HepG2 and LS174T cells (P < 0.05), whereas adding SENP1m restored the RIF-induced increases (P < 0.05). These results indicated that SENP1 could repress the RIF-induced hPXR-mediated MDR1 transcriptional activity and mRNA expression.

Objective Astrgaloside Ⅳ derivative (ASId) is one of Astragaloside Ⅳ (ASI) derivatives with higher water-solubility and may have more druggability than ASI. The present study aims at observing the effects of ASId on cardiovascular parameters in chronic heart failure in rats. Methods Using echocardiographic and haemodynamic measurements, the effects of ASId on congestive heart failure (CHF) induced by ligation of the left coronary artery in rats were investigated.ventricle (LV) pressure (dp/dt) in ASId treated groups were significantly increased. Both LV volumes in diastole and in systole were decreased significantly after ASId treatment, accompanied with a trend towards normalization of relative stress. ASId treatment also inhibited compensatory hypertrophy of depressed heart. Conclusion ASId could improve cardiac functions and inhibite compensatory hypertrophy and LV remodelling, which suggests the possibility of ASId as a new therapeutic drug for the treatment of CHF.

Objective: To develop a reporter gene system based on transient transfections with a NF-?B responsive reporter gene to detect the bioactivity of IL-1? and IL-1 receptor antagonist.Methods: NF-?B reporter and Dual-Luciferase assays were applied to measure the bioactivity of IL-1? and IL-1 receptor antagonist in mouse EL4 cells(some subclones of EL4 cells expressed high level of IL-1 receptor on cell surface).pNF-?B-luc and pRL-TK, used as an internal control,were co-transfected into EL4 cells and then the IL-1? was added.Results: The results indicated that IL-1? was able to induce the expression of this luciferase,which could be blocked by IL-1 receptor antagonist. The optimal dose of IL-1? was 5(?g/L) in Dual-Luciferase assay,whose bioactivity can be effectively inhibited by IL-1ra at 50 ?g/L.Conclusion: We have established a new method to detect the bioactivity of IL-1? and IL-1 receptor antagonist,which can give repeatable results.

OBJECTIVE To determine the drug resistance phenotype and genotype of plasmid-mediated AmpC ?-lactamase in Klebsiella pneumoniae isolated from Harbin.METHODS Isolates of K.pneumoniae with an inhibition ring to cefoxitin of ≤18 mm diameter were used.Antimicrobial susceptibilities were determined by disc diffusion method.AmpC genes were detected by PCR with six pairs of primers.RESULTS Sixty-three isolates had an inhibition ring to cefoxitin of ≤18 mm diameter and 26(11.3%)were detected to be AmpC-producing in a total of 231 clinical isolates of K.pneumoniae.Seventy-six percent,70.2%,53.8%,50.5%,57.7%,38.5% and 7.7% of AmpC-producers were resistant to cefoxitin,cefotaxime,ceftazidime,amoxicillin/clavulanic cid,ciprofloxacin,amikacin and imipenem,respectively.ACT,DHA and CIT types of AmpC beta-lactamase were detected in 13,8 and 5 isolates,respectively.No ACC,MOX and FOX were detected.CONCLUSIONS The AmpC ?-lactamase in Harbin is mainly in the types of ACT,DHA and CIT.AmpC-producing K.pneumoniae shows decreased susceptibilities to cefoxitin and third generation cephalosporins.

Objective To explore the investigation method of complicated and profound traditional Chinese herbal medicine,the potential action mechanisms of flavonoids from Scutellaria baicalensis were studied by docking calculation.Methods In total, eight flavonoids (aglycones and their glicosides) from S. baicalensis were selected as ligands.The crystalline structures of targets related to common diseases were used as the receptors for calculation. The calculations were conducted with Schr(o)dinger software package. The grading standard of selectivity was developed according to G-score between ligands and receptors. Results Twenty-six pharmacologic actions have been reported.Among all effects in literature, nine of them can be deduced from the docking calculation of aglycone. From glycosides with grade ++, 25 reported effects can be estimated by calculation. Apparently, the target selectivity of aglycones and their glycosides are different form the virtual evaluation. The virtual evaluation results of glycosides were closer to the reported effects. Conclusion Our proposed virtual evaluation method seems an effective way to investigate the complicated system of traditional Chinese herbal medicine. It suggests that aglycones may be effective as the form of glucoside in vivo, and metabolism is a very important factor for virtual evaluation.