OBJECTIVE To compare the detection rates of Ureaplasma urealyticum(Uu),by 4 kinds rits and find out the best one.METHODS Using four kinds of mycoplasma detection kits,namely are French mycoplasmaIST2,Zhuhai Livzon′s ICS,Dark horse′s IES and Shanghai Its Prachanda,under the same conditions,the mycoplasma of the Clinical specimens for 260 cases were tested.RESULTS The detection rate of mycoplasma(Uu) for 48 hours by four kinds of brands kits about mycoplasma liquid culture was as follows 45.4% for French MycoplasmaIST2,36.2% for Zhuhai Livzon′s ICS,37.7% for Dark horse′s IES and 36.8% for Shanghai Its prachanda.The results of susceptibility test: the reagent of IST2 had.the lowest resistance to josamycin,doxycycline,clarithromycin,ofloxacin and azithromycin,and had the better results than the other three kinds of reagents.Mycoplasma reagents form different companies had significant differences in resistance rates to five kinds of antibiotics.CONCLUSIONS The results suggest that when we cultivate clinical mycoplasma should be careful to select of the mycoplasma liquid culture identification kit.

Objective To investigate the epidemiological features and influential factors of prehypertensionin Yongchuan district of Chongqing .Methods The cluster sampling method was adopted to conduct the survey on randomly selected 3 100 local people (≥18 years old) ,it concluded questionnaire ,physical examination ,blood specimen collection and so on .Results The prevalence of hypertension in Yongchuan district of Chongqing adults was 43 .0% .The prevalence of hypertension in male(49 .5% ) was higher significantly than that of female(35 .0% )(P<0 .05);The prevalence of prehypertension was increased with age up and then de‐clined in older age ,it was achieve highest at 40- <50 years old(50 .7% ) .The average age ,smoking rate ,drinking rate ,BMI ,waist circumference ,TC ,TG ,Purine trione of the prehypertension group was higher than that of the normal group(P<0 .05);the results of Logistic regression indicated that the risk factors of prehypertension weresmale ,higher BMI ,abdominal obesity ,hypercholesterol‐emia ,hypertriglyceridemia ,smoking regularly ,drinking regularly and so on(P<0 .05) ,physical activities was protective factor(P<0 .05) .Conclusion The prevalence of prehypertension in the adults of Yongchuan district of Chongqing is high ,relative intervention on these factors should be tookas soon as possible .

Objective To investigate the expression of netrin-1 in placenta from patients with pre- eclampsia and the relation to placental angiogenesis.Methods Twenty patients with pre-eclampsia(12 mild cases and 8 severe cases)and 20 normal late pregnant women were investigated.The expression of netrin-1 mRNA and protein was determined with RT-PCR and Western blotting respectively.The placenta vascular density was examined by immunohistochemical F8 staining.Results (1)The values of netrin-1 mRNA in normal group and pre-eclampsia groups were 0.51?0.08 and 0.41?0.06;The values of netrin- 1 protein in normal group and pre-eclampsia groups were 26.4?1.8 and 20.5?1.3(P

Objective To evaluate the effects of pretreatment with different doses of phosphocreatine on hepatic ischemia-repeffusion (I/R) injury in rats.Methods.Thirty male Sprague-Dawley rats,weighing 200-250 g,were randomly divided into 5 groups (n =6 each):sham operation group (group S),hepatic I/R group (group I/R),and pretreatment with different doses of phosphocreatine groups (groups P1-3).Hepatic I/R was induced by 90 min occlusion of the hepatic artery and portal vein entering the middle and left lobes of the liver followed by 4 h reperfusion in anesthetized rats.Phosphocreatine 50,150 and 450 mg/kg were injected via the tail vein at 60 min before ischemia in groups P1-3,respectively.In groups S and I/R,the equal volume of normal saline was given instead.Blood samples were taken from the abdominal aorta at 4 h of reperfusion for determination of plasma alanine aminotransferase (ALT),aspartate aminotransferase (AST),TNF-α and IL-1β concentrations.The rats were then sacrificed and the livers were removed for determination of myeloperoxidase (MPO) activity (by ELISA),intercellular adhesion molecule-1 (ICAM-1) expression (by immunohistochemistry),and cell apoptosis (by TUNEL) and for microscopic examination (by electron microscopy).Results The MPO activity in liver tissues,plasma ALT and AST activities,TNF-α and IL-1β concentrations and the number of apoptotic cells were significantly higher in groups I/R and P1-3 than in group S,while lower in groups P1-3 than in group I/R (P ＜ 0.05).The parameters mentioned above were decreasedin turn in groups P1-3 (P ＜ 0.05).Conclusion Phosphocreatine pretreatment can attenuate the hepatic I/R injury in rats in a dose-dependent manner and inhibition of the inflammatory responses is involved in the mechanism.

Objective To observed the effect of high-intensity focused ultrasound (HIFU) in combination of submicrobubble on ablation of breast tumor VX2 in rabbits.Methods Submicrobubble was prepared,and the appearance,distribution,diameter,and zeta potential were measured.The rabbits were injected with the tumor tissue suspension in bilateral breast tissues.HIFU(150 W,120 W,5 s,3 s) combined with submicrobubble to damage rabbit breast VX2 tumors.The coagulation necrosis was assessed by HE staining.The grayscale changes of the target area before and after HIFU irradiation were recorded automatically by computer.Results The diameter of the submicrobubble was 498.9 nm on average.HE staining showed the area of coagulation necrosis was significantly larger in the HIFU + submicrobubble group than the HIFU + PBS group.The injury range of 150 W irradiation was larger than that of 120 W irradiation,given the same irradiation time.The injury range of 5 s irradiation was larger than that of 3 s irradiation,given the same irradiation strength.The gray scale change in the target area was significantly higher in the HIFU + submicrobubble group than the HIFU + PBS group.Conclusions The submicrobubble exhibited sound imaging performance,and it can be use in the ultrasound therapeutics in the future.

Purpose　The aim is to study the pharmacokinetic of iv thymopeptide in rabbit.Method　Thymopeptide concentration of rabbit plasma was determined by HPLC and pharmacokinetic parameters were computerized with 3P87 program.Results and Conclusions　The pharmacokinetic parameters of iv thymopeptide in rabbit were:Cmax=(30.06±9.27)μg/ml,t1/2(β)=(29.24±23.78)min, Ke=(0.032 3±0.013 8)min-1 and AUC 0→∞=(205.63±46.48)μg*min/ml.

BACKGROUND:Treatment methods for high anal fistula include fistula removal, incision and thread drawing, selective mucosal flap displacement, fibrin glue closure, fistula liagtion between sphincter, most of which show many advantages, including long-term healing, a low success rate, high recurrence rate, and high postoperative complication rate.
OBJECTIVE:To observe the clinical effect of acelular extracelular matrix in the treatment of high anal fistula, and to explore a minimaly invasive treatment for high anal fistula.
METHODS: Totaly 100 cases of high anal fistula were randomly divided into treatment group and control group, 50 cases in each group. Treatment group were treated with alogenic acelular extracelular matrix, and control group were treated with traditional low incision with high thread-drawing. Then, we observed and compared the operation time, bleeding volume, postoperative pain score (visual analog scale score), postoperative pain
duration, anal incontinence severity score (Wexner score), wound healing time, one-stage success rate, cure rate, recurrence rate.
RESULTS AND CONCLUSION: Compared with the control group, the treatment group showed lower scores in the operation time, bleeding volume, wound healing time, visual analog scale score, postoperative pain duration, and anal incontinence severity score (P < 0.05), but higher scores in one-stage success rate and cure rate (P < 0.05). There was no difference in the recurrence rate between the two groups. These findings indicate that the alogenic acelular extracelular matrix for treatment of high anal fistula exhibits smal trauma, quick recovery,
short course of treatment, high cure rate and has no damage to the anal function and appearance.

Objective To study the characteristic of salvianolic acid(SA) binding to bovine serum albumin(BSA) and the structure-performance relationship.Methods The interactions between BSA and four natural SA(SAⅠ,rosmaric acid;SAⅡ,lithosperic acid;SAⅢ,salvianolic acid A;and SAⅣ,salvianolic acid B) were investigated by fluorescence and ultraviolet spectroscopy.Results The intrinsic fluorescence of BSA was quenched by SA via forming SA-BSA complexes and non-radiation energy transfer.The parameters of SA-BSA binding process,such as the static apparent association constant KA,the number of binding site n,the efficiency of energy transfer E,the spatial distance r were obtained,and the thermodynamic constants ?G,?H,and ?S were calculated.Conclusion The results indicate that SAⅢ bounds to BSA mainly through a hydrophobic force and the other three SA-BSA interactions are mainly driven by hydrogen bond and Van der Waals' force.Y,a comprehensive binding parameter constructing from the equation Y=lg (KA?E?n/r),could be used to reflect the interaction extent of SA-BSA system.The Y value changes with the number of free phenolic hydroxyl and molecule volume and decreases in the order of SAⅢ→SAⅣ→SAⅡ→SAⅠ.The results from correlation analysis indicate that it could be possible to estimate SA-BSA binding extent from hydrophobic parameter clogP and topo-polar surface area per unit of molecular weight tPSA/Mr of SA molecule.

Objective Explore the conditions of the cloning,expression and purification of FMRP.Methods The plasmid pET22b(+)-FMR1,constructed by molecular cloning,was transformed into E.coli BL21(DE3) competent cells and induced to express FMRP by IPTG.Recombinant FMRP was purified by affinity chromatography,verified by Western-blot,and tested for its RNA binding ability.Results FMR1 cDNA was successfully cloned into pET22b(+) vector and expressed in E.coli BL21(DE3).A protein with Mr 79 000 was purified and confirmed to be FMRP.This protein retained the RNA binding ability of FMRP.Conclusion We successfully expressed recombinant hFMRP with high purity and activity in E.coli,which provided a reliable material to study the function of FMRP.

OBJECTIVE To explore the distribution of 16S rRNA methylase and aminoglycoside modifying enzymes in continuous isolates of Pseudomonas aeruginosa(PAE).METHODS The antibiotics susceptibility was tested by K-B method,the 16S rRNA methylase(rmtB) and aminoglycoside modifying enzymes were detected by polymerase chain reaction(PCR),the positive genes were amplified and sequenced by PCR fluorescence spectrophotometry.RESULTS Among 20 strains of PAE,the 16S rRNA methylase and 5 kinds of aminoglycoside modifying enzymes had been detected.The 5 kinds of aminoglycoside modifying enzymes were aac(3)-Ⅱ,aac(6′)-Ⅰb,aac(6′)-Ⅱ,ant(3″)-Ⅰ and ant(2″)-Ⅰ,respectively.And more,the rmtB in the first and third strains was sequenced,and translated into amino acid,and the translated amino acid sequence was compared with GenBank,suggesting there be different amino acid sequence.This was confirmed as two new subtypes.CONCLUSIONS Resistant to antibiotics PAE in our hospital is mainly related to 16S rRNA methylase and 5 aminoglycoside modifying enzymes,and 2 new subtypes of 16S rRNA methylase are discovered.