A method was developed for simultaneous determination of pyrrolizidine alkaloids and isoquinoline alkaloids in honey by dispersive solid phase extraction and high performance liquid chromatography-tandem mass spectrometry ( QuEChERS-HPLC-MS/MS) . The honey samples were extracted with acetonitrile solution and cleaned up with PSA absorbent. Agilent Poroshell 120 SB-C18 chromatographic column was used to separate alkaloids with high sensitivity and satisfactory resolution. The identification and quantification were achieved by using electrospray ionization in positive ion mode ( ESI+) with multiple reaction monitoring (MRM). Matrix-matched calibration curves with good correlation coefficients (R2>0. 99) were obtained in the concentration range of 0. 1-100 μg/L. The recoveries of the spiked samples at 1-100 μg/kg were in the range of 70% to 110% with the RSD of intra-day and inter-day lower than 15% and 20%, respectively. The limits of detection ( LOD) and limits of quantification ( LOQ) for all alkaloids were 0. 3 and 1. 0 μg/kg, respectively. This method was successfully applied to the simultaneous determination of pyrrolizidine alkaloids and isoquinoline alkaloids for quantification and confirmation in honey samples.

Taxol could induce tumor cell apoptosis throug h activation of Fas/FasL and caspases. bcl-2 also played an important role in t axol-induced cell apoptosis. Furthermore, taxol had the similar action with lip opolysaccharide on inducing the release of bioactive substances including tumor necrosis factor, interleukin and nitric oxide. There were as well some progresse s in taxol-resistance of tumor cells.

BACKGROUND: There are some reports about the relationship between atherosclerotic cerebral infarction and apolipoprotein E and B, but the results are still controversial. The relationship between apolipoprotein E and B and young adult atherosclerotic cerebral infarction has not been reported yet in China.OBJECTIVE: To investigate the relationship between the polymorphism of apolipoprotein E and B gene and young adults atherosclerotic cerebral infarction (ACI).DESIGN: A controlled case analysis of young adult atherosclerotic cerebral infarction patients.SETTING: Department of Neurology, Shengjing Hospital of Chinese Medical University.PARTICIPANTS: This study was conducted in the Department of Neurology, Shengjing Hospital of Chinese Medical University from January of 1998 to December of 2000. Thirty-six young adult patients with atherosclerotic cerebral infarction, including 30 males and 6 females, with the meaage of (41.6±6.54) years, and 100 healthy young adults, including 66 males and 34 females, with the mea age of (36.16±6.12) years were included in this study.METHODS: 8 Ml venous blood was collected after fasting for 12 hours to assay serum lipid and apolipoprotein. The gene polymorphism of apolipoprotein E and B were detected with PCR method. Enzymic method was used to detect total cholesterol, total triglycerides and high density lipoprotein-cholesterol (HDL-C). Apolipoprotein AI.B was measured with immunoturbidimetry method and lipoprotein (a) with ELISA method.Lipids, lipoprotein and apolipoprotein of six control blood samples couldn't be measured because of hematolysis.MAIN OUTCOME MEASURES: ① The distribution characteristics of genotypic frequency of apolipoprtein E and B in the two groups. ② The relationship between gene polymorphism of aoplipoprotein E and B and the level of blood lipids, lipoprotein and apolipoprotein. ③ The correlation intensity between genotypes of apolipoprotein E and B and onset of young adult atherosclerotic infarction.RESULTS: ① In ACI group, ε3/4 counted for 36.1% and ε2/4 for 27.7%, but was 12% and 7% in control group respectively. The gene frequency of ε4 was 0.320. All these values were higher than that in control group 0.95 (P ＜ 0.05). ② The levels of TG, TC, and LP (a) in ACI group were higher than that in control group. The level of HDL-C was much lower than the control group's (P ＜ 0.05-0.01). ③ ε4 allele caused the increase of the content of TG, TC, and LP (a) so as to induce the relative risk rates of decrease of HDL-C which were 8.23, 4.85, 29.9,4.39 (P ＜ 0.01-0.001) respectively. ④ AI content of the gene frequency of ApoB XbaⅠ X+X- was (1.01±0.30) g/L in ACI group, which was lower than (1.33±0.15) g/L in X-X- subgroup (t=2.55, P ＜ 0.05). The level of ApoA I in X+X group (244.3 mg/L) was remarkably different from that (183.0 mg/L)in control group (t=4.50, P ＜ 0.01). ⑤ Three cases had both ε3 and X+X-in ACI group, 10 had both ε3 and X-X-, 2 had both ε4 and X+X-, and 19 had both ε4 and X-X-. The risk of ACI was 2.85 with the linkage of allele ε4 and allele X-X- in ACI patients (x2=1.52, P ＞ 0.05).CONCLUSION: Allele ε4 is a genetic facilitated factor of young adults ACI. Xba Ⅰ X+X- is another probable genetic symbol. The correlation between atherosclerotic cerebral infarction of young patients during the combination of apolipoprotein E and B should be researched further.

Various surgical technologies have been developed to minimize the risk of the operation. With continuous water flow being the dissector, a relatively bloodless operation and a clear view for the operator can be obtained. When applied to the adventitia and the soft tissue adjacent to the vascular structure, it is satisfying and the vessel and ureter can be protected perfectly if ligated selectively. The operation time is also shorter than the routine one. So, further studies of this technology are necessary.

According to information interchange situation in our hospital,this article analyzes and discusses the PHS,GSM,CDMA and DECT technologies,selects the PHS technology to construct hospital mobile communication system for the better construction of hospital information interchange environment.

Objective To analyze the effect of malaria surveillance and evaluate the surveillance measure in Guangxi Zhuang Autonomous Region from 1995 to 2004 so as to provide scientific basis for formulating control strategy at the late-stage of malaria control. Methods The data on blood smear examination of febrile patients among local residents, focus residents and mobile population in 92 counties from 1995 to 2004 were collected,described and analyzed. Results The totals of 10920395,427600,246159 and 253530 slides in local residents,focus residents, returned population and endemic population were examined. The average positive rates of blood examination were 0.009%,0.079%,1.386% and 0.324%,respectively. The indigenous cases and imported cases accounted for 23.29% (1285/5517) and 76.71% (4232/5517) of the total malaria cases respectively. Conclusions The malaria incidence in Guangxi Zhuang Autonomous Region has been under 1/10000 for 17 years. There is less indigenous malaria in Guangxi. The imported malaria cases are dominated and scattered in whole Region. The secondary cases of imported malaria is very low. The results show that the present surveillance system and control programs are effective for monitoring the epidemic situation of malaria.

BACKGROUND: The distal femur resection in total knee arthroplasty is commonly made using a fixed angle relative to an intramedullary rod. Does a fixed distal femur resection angle influence radiographic alignment in primary total knee arthroplasty? OBJECTIVE: To research the femoral mechanical-anatomical angle in Chinese and how it affects the femoral component angle and postoperative mechanical alignment for total knee arthroplasty. METHODS: Totally 109 cases (148 knees) underwent primary total knee arthroplasty. One surgeon used a fixed resection angle of 5° (group A; n=56 cases, 76 knees). The second surgeon adjusted the resection angle according to preoperative coronal alignment, using 5° for neutral/mild varus, 6° for more severe varus, 4° for mild valgus and 3° for severe valgus knees (group B; n=53 cases, 72 knees). Preoperative hip-knee-ankle angle, femoral mechanical-anatomical angle, postoperative hip-knee-ankle angle, femoral component angle and tibial component angle were measured from standing hip-knee-ankle angle radiographs. For postoperative hip-knee-ankle angle, 177°-183° were considered as neutral mechanical axis. For femoral and tibial component angles, the target results were 88°-92°.RESULTS AND CONCLUSION: (1) There was no statistically significant difference between groups in postoperative hip-knee-ankle angle (group A: (178.78±3.57)°, group B: (178.23±2.78)°; P=0.302) and good rate of hip-knee-ankle angle (group A: 62%, group B: 65%). (2) The mean femoral mechanical-anatomical angle was (6.70±1.34)°preoperatively. There was no significant difference in the good rate of hip-knee-ankle angle (hip-knee-ankle angle < 7°:69%; hip-knee-ankle angle ≥7°: 55%; P=0.108) postoperatively. There was a statistically significant difference about good rate of femoral component angle between different femoral mechanical-anatomical angle angles (femoral mechanical-anatomical angle < 7°: 76%; femoral mechanical-anatomical angle ≥7°: 39%; P < 0.01). (3) There was a statistically significant correlation between preoperative femoral mechanical-anatomical angle and postoperative hip-knee-ankle angle (r=?0.42, P < 0.01) and postoperative femoral component angle (r=?0.58, P < 0.01). (4) The mean femoral mechanical-anatomical angle was larger than foreign values. When the resection angle less than femoral mechanical-anatomical angle, the femoral component may tend to be varus which could affect the lower extremity mechanical alignment. For the larger femoral mechanical-anatomical angle, we advise to adjust the resection angle according to measured value preoperatively.

BACKGROUND:Previous research has demonstrated that preoperative hormone therapy relieved clinicaI and pathological stages of prostatic carcinoma patients,reduced positive ratio of incisaI margin:however,it did not increase disease-free surviva J rate.Worth of preoperative hormone therapy for prostatic carcinoma remains unclear.OBJECTIVE:To assess the role of preoperative hormone therapy in localised prostate cancer.METHODS:Articles were searched from PubMed,Embase.Cochrane Library(No.4,2009),Chinese biomedicaf literature database,Chinese Scientific Journals full_text database,and Chinese Journal full-text database(published before October,2009).Randomized controlled trials which were diagnosed as Iocalised prostate cancer using pathology and cytology were included The sex and nationality were not limited.and patients did not have severe heart and lung diseases Prostatic carcinoma which occurred Later or repeatedly was excluded.Otherwise.randomized controlled trails which were coincidence with the inclusion criteria were also included.Review Manager 5.0 published by Cochrane was used for stafistical analysis.Overall survival rate.disease-free survivaI rate,positive surgical margin rate,positive lymph node rate.and seminal vesicle invasion rate were evaluated.RESULTS AND CONCLUSlON:Six randomized controlled trials totaling 1 027 padicipants were included.The result of meta analysis showed that there was no significant difference in overall surviva J rate[RR=0.94,95%C,(0.86,1.02)],disease-free survival rate[RR=1.02,95%CI(0.89,1.17)],positive lymph node rate IRR=0.86,95%CI(0.47,1.57)],and seminal vesicle invasion rate[RR=1.09,95%CI(0.74,1.59)]between single prostatectomy and preoperative hormone therapy plus prostatectomy,while there was significant difference in positive surgical margin rate[RR=0.46,95%CI(0.32,0.66)]This suggested that preoperative hormonal therapy prior to prostatectomy did not improve survival rate,positive lymph nodes rate and seminaI vesicle invasion rate:however.there was a significant reduction in the positive surgicaI margin rate.

Objective To investigate the effects of EMP exposure to male BABL/c mice on the reproduction and its sex ratio.Methods Thirty-three male BALB/c mice were randomly divided into sham-exposed group,10 000 pulses/d exposed group,and 100 000 pulses/d exposed group with 50 Hz static magnetic field of 35 kV/m for 2 weeks consecutively,then the male mice were mated with unexposed females (1 male vs.2 female).Mated males were sacrificed to examine the exposure effects on sperm number and testis index after 7 days of mating.The sex ratio of embryos collected from unexposed mated females was investigated by PCR.Results The sex ratio of offspring was 0.298 (14/47) in the 10 000 pulses/d exposed group,significantly lower than 0.871 (27/31) in the sham-exposed group.No statistical changes were observed in the sex ratio of offspring,sperm number,the weights of testis and testis index after 100 000 pulses/d exposure.Conclusions The exposure of male mice to 35 kV/m EMP at 10 000 pulses/d for 2 weeks consecutively may change the sex ratio of mice's offspring.

OBJECTIVE:To study the relative bioavailability,pharmacokinetics and bioequivalence of domestic nisoldipine tablets in healthy volunteers.METHODS:A single oral dose of 10 mg test and reference nisoldipine tablets were given to 24 male healthy volunteers in an open randomized 2?2 latin square design.The plasma concentrations of nisoldipine at different time points were determined by LC-MS and the pharmacokinetic parameters of the two kinds of tablets were computed and their bioequiavailability was evaluated.RESULTS:The main pharmacokinetic parameters of the test vs.reference formulations of nisoldipine in 24 healthy volunteers were as follows:Cmax(2.94?2.78)ng?mL-1 vs.(3.22?2.16)ng?mL-1,tmax(1.70?1.00)h vs.(1.40?1.00)h,t1/2(6.81?4.11)h vs.(5.55?2.35)h,AUC0～24(10.60?7.70)ng?h?mL-1 vs.(9.90?6.76)ng?h?mL-1,AUC0～∞(11.30?7.90)ng?h?mL-1 vs.(10.20?7.00)ng?h?mL-1.The relative bioavailability of domestic nisoldipine tablets was(110.3?30.8)%.CONCLUSION:The reference preparation and the test preparation of nisoldipine tablets were proved to be bioequivalent.