1.Management of primary vesicoureteral reflux in children.
Yan CHEN ; Jie DING ; Jian-ping HUANG
Chinese Journal of Pediatrics 2004;42(10):750-752
2.Clinical Efficacy of Laparoscopic Microwave Ablation in the Treatment of Small Hepatocellular Carcinoma with Cirrhosis
Yan HUANG ; Jian CHEN ; Xushun LIU
Chinese Journal of Minimally Invasive Surgery 2017;17(6):504-508
Objective To evaluate the efficacy of microwave ablation in the treatment of small hepatic carcinoma with liver cirrhosis.Methods Altogether 50 patients with small hepatic carcinoma with liver cirrhosis from April 2009 to June 2013 were divided into microwave ablation group (n =26) or resection group (n =24).The microwave ablation group was treated by laparoscopic microwave ablation while the resection group was treated by laparoscopic resection.The time of operation,intraoperative blood loss,length of hospital stay,postoperative complications,postoperative liver functions,and 1-year,2-year,3-year survival rate of each group were observed.Results The alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were increased and the albumin (ALB) was decreased postoperatively in both groups,and all recovered in 7 days after operation.The ALT and AST in microwave ablation group were lower than resection group,and the ALB was higher than resection group,with statistical significances (P < 0.05).The operation time in microwave ablation group was (53.5 ± 8.5) min,significantly less than the resection group [(92.9 ± 19.8) min,t =-9.019,P =0.000].The intraoperative blood loss in microwave ablation group was (41.9 ± 17.2) ml,significantly less than the resection group [(131.3 ± 66.0) ml,t =-6.663,P =0.000].The length of hospital stay in microwave ablation group was (7.8 ± 1.0) d,significantly less than the resection group [(10.4 ± 1.3) d,t =-7.742,P =0.000].The rate of postoperative complication in microwave ablation group was 19.2% (5/26),significantly less than the resection group [45.8% (11/24),x2 =4.059,P =0.044].The 1-year,2-year,and 3-year survival rates in microwave ablation group were 100%,88.5%,80.8%,respectively,and those in resection group were 100%,91.7%,83.3%,respectively.There were no statistical differences between the two groups (log-rank x2 =0.077,P =0.792).Conclusions Microwave ablation therapy is feasible in the treatment of small hepatocellular carcinoma with cirrhosis that located in the special area and endoscopic surgery is not easy to remove.Microwave ablation has advantages of less trauma,simple performance and less complications.
3.Comparison of Methods for Extraction and Determination of Pesticide Residue in Chinese Herbal Medicines
Xiaohui HUANG ; Yan LIU ; Jian ZHANG
Chinese Journal of Information on Traditional Chinese Medicine 2014;(4):89-92
Objective To compare the effects of accelerated solvent extraction (ASE), ultrasonic extraction (USE) and soxhlet extraction (SE), by extraction and determination of pesticide residues in Chinese herbal medicines. Methods Pesticide residues of Chinese herbal medicines were extracted by accelerated solvent extraction, ultrasonic extraction and soxhlet extraction, then the extract were cleaned up by sulfonation treatment, alumina neutral-florisil column and gel permeation chromatography (GPC). The extract was separated by HP-5 capillary column and detected by electron-capture detector. Results Extraction efficiency of USE was significantly lower than that of ASE and SE, there was no significant difference between ASE and SE. Pairwise comparison of the recoveries of three purification methods showed no significant difference. Conclusion The extraction efficiency of three methods was ASE>SE>USE. The extraction method should be selected according to the requirement.
4.Determination of Organochlorine and Pyrethroid Pesticides Residues in Zigyphussp by Accelerated Solvent Extraction
Xiaohui HUANG ; Yan LIU ; Jian ZHANG
Chinese Journal of Information on Traditional Chinese Medicine 2014;(1):74-78
Objective To establish a gas chromatography method for the determination of 50 organochlorine and pyrethroid pesticides residues in Zigyphussp. Methods The organochlorine and pyrethroid pesticides were extracted from Zigyphussp with solvents of acetonitrile (1%acetic acid) by accelerated solvent extraction (ASE) for 5 min at 100℃. Then the extracts were cleaned up by alumina neutral-florisil column and eluted by mixed solvents of ethyl acetate and hexane (15∶85, V/V). The extract was separated by HP-5 and DB1701 capillary dual-column and detected by electron-capture detector. Results The average recoveries and RSD ranged from 71.4% to 110.9%and 1.2% to 14.1% respectively, at three spiked mixed organochlorine and pyrethroid levels. Conclusion The method has good separation and repeatability, and can be used in determination of organochlorine and pyrethroid pesticide residues in Zigyphussp.
5.Phase Ⅳ clinical trial of sorafenib in combination with interferon-alpha as the first-line treatment in patients with advanced renal cell carcinoma:interim analysis of efficacy and safety
Yiran HUANG ; Jianhui MA ; Jian HUANG ; Yanqun NA ; Yan SUN
Chinese Journal of Urology 2010;31(1):5-7
Objective To evaluate the efficacy and safety of sorafenib in combination with interferon-alpha(IFN-α)as the first-line treatment in patients with advanced renal cell carcinoma.Methods Since Dec 2007 to Jun 2008,137 legal patients with advanced renal cell carcinoma (RCC)were enrolled in the trail from 22 hospitals in China.All the patients continuously received the treatment of sorafenib plus IFN-α untill disease progressed or patients were unable to tolerate.The primary end points were objective response,disease control rate and adverse effects rate.Results This interim analysis was based on the data collected from the study initiation date to 2009/3/20.The overall response rate(ORR),including complete response (CR) and partial response(PR),was 32.8%(45/137).The median follow-up time was 11.9 months,only 25 patients progressed at the cut off time.The most common adverse events were hand-foot skin reaction(48.2%),alopecia(23.4%),rash (20.4%),diarrhea(19.7 0A),fever(16.8%),lassitude(10.2%),etc.The incidence of 3 or 4 grade hand-foot skin reaction was 8.8%.Conclusions Sorafenib in combination with IFN-α as the firstline treatment in patient with advanced RCC could be effective and safe.
8.Performance evaluation of AU2700 biochemical analyzer for detecting serum glycated albumin
Huihui YAN ; Qinfeng HUANG ; Pingping AN ; Jian LIAO ; Min CHEN
International Journal of Laboratory Medicine 2015;(5):613-614
Objective To use the AU2700 biochemical analyzer to evaluate the performance of the reagent kit for determining se-rum glycated albumin(GA)by the enzymatic method.Methods On the basis of the relevant documents of CLSI-EP,the perform-ance evaluation of the Lucica GA-L reagent kit for detecting GA was performed on the precision,accuracy,linearity range and refer-ence range;the correlation between the results detected by the two kinds of reagent kit (enzymatic method)was analyzed.Results The reagent had high precision(CV<3%);the dilution had good linearity;the average recovery rate of GA was 97.7%,the average recovery rate of albumin(ALB)was 96.43%;the detection results by the two kinds of reagent kit had good correlation (r2 =0.976, P <0.01).Conclusion The Lucica GA-L reagent kit shows the good analytical performance on the AU2700 biochemical analyzer, which is consistent to the manufacturers statement and can be better used in clinic.
10.Determination of Warfarin in Human Plasma by HPLC
Xiaohui HUANG ; Ping YANG ; Yan LIU ; Huaiping TIAN ; Jian ZHANG
China Pharmacist 2014;(2):199-201
Objective:To establish a simple HPLC method for the determination of warfarin in human plasma and analyze the re-sults of 100 monitoring reports. Methods:Warfarin was extracted from the plasma samples by acetonitrile. The extract was separated on a ZORBAX Eclipse XDB-C8 column (150 mm × 4. 6 mm, 5 μm)with a mobile phase consisting of methanol and 0. 1% acetic acid (65∶35) at flow rate of 1. 0 ml·min-1 and detected by a diode array detector. The detection wavelength was at 308nm and the sample size was 20 μl. Results:The calibration curve was linear within the range of 0. 1-5. 12μg·ml-1 . The average recovery and RSD was ranged from 85. 0% to 102. 3% and 1. 2% to 3. 9%(n=6), respectively. Inter-and intra-day RSD were 1. 1%-1. 8% and 1. 6%-2. 9%, respectively. Conclusion:The proposed method is rapid, convenient and accurate in the detection of warfarinin concentration in plasma.