Objective To investigate the effect of local delivery of paclitaxel on bile duct scar formation and biliary stricture in guinea pig.Methods Models of end-to-end anastomosis of the common bile duct were established in 42 guinea pigs.The animals were randomly divided into paclitaxel and control groups.In the paclitaxel group,the drug solution(1000 ?mol/L,0.05 ml) was smeared onto the anastomotic wound before closing the abdomen.The animals were killed in 3 days,2 weeks,and 1 month after the operation(7 in each group at each time point).The sepcimens of the common bile duct were obtained for histological examination.Transmission electron microscopy was employed to observe the ultrastructure of paclitaxel-induced apoptotic cells.Results Histological examination showed inflammatory reaction and hyperplasia of the bile duct wall.The bile duct wall of the paclitaxel group was significantly thiner than that of the control group in 3 days and 1 month after the operation [3 days:(574.41?24.53)?m vs(802.98?24.42) ?m,t=-6.604,P=0.000;1 month:(1383.36?36.64) ?m vs(1518.56?34.89)?m,t=-2.672,P=0.020].Paclitaxel-induced cell apoptosis and injured cell organs were found by transmission electron microscopy.Conclusion Single local delivery of paclitaxel can inhibit biliary stricture in one month.

This study investigated the "homing" phenomenon in hepatocellular carcinoma (HCC). The "homing" specificity of endothelial progenitor cells (EPC) by establishing an orthotopic implantation model in nude mice. EPCs harvested from the marrow cells were separated by density gradient centrifugation. Fluorescence microscope, flow cytometry (FCM) and double fluorescence staining with FITC-UEA-I and DiI-ac-LDL, were employed to identify the cells. 4',6-diamidino-2-phenylindole (DAPI) labelling and real-time PCR were used for detecting the expression of CD133 and chemokines to trace and observe the distribution of EPCs. Our results showed that the distribution rate of EPCs was obviously higher than that in other important organs and the negative control group. Detection of CD133 and chemokines yielded similar results in difference tissues. Our experiment confirmed that the chemotaxis of EPCs does exist in HCC. Moreover, HIF-1α, SDF-1 and VEGF might play important roles in the "homing" of EPCs in HCC. EPCs might be a potential candidate for targeting vector of HCC for gene therapy.

Objective To study the clinical application of the peak expiratory flow rate( PEFR) in children with asthma.Methods The PEFRs of 43 cases of asthma at the acute stage were measured to guide the clinical grading and therapy by the optimum individual PEFR of the patients at the remission stage, and the descending rate and warning value of individual PEFR were determined to investigate the relationship between the individual PEFR descending rate and the asthma attack conditions in the standard and nonstandard monitoring groups.Results At the asthma attack stage, the clinical symptoms became severe with PEFR declining; at the remission stage, the preventive application of drugs was based on the changes of the individual PEEF descending rate . The case number and frequency of asthma attack and the cases subjected to moderate or severe attacks in the standard group were 15 %,23.5 % and 25 % respectively; while those in the nonstandard group were 43.5 %, 75.5 % and 76.9 % respectively, which showed a significant difference( P

Objective To improve the safety of surgery,the application of indocyanine green fluorescein(ICG)angiography in intracranial aneurysm surgery was investigated.Methods Fifty cases of intracranial aneurysms were retrospectively analyzed.All the patients were received ICG angiography before and after intracranial aneurysm clipping.The efficiency of the surgery was evalu-ated with CT angiography(CTA)and(or)digital subtraction angiography(DSA).The postoperative follow-up was conducted using Glasow outcomes score(GOS).Results Of the 50 patients,3 cases of aneurysmal neck remnant,one case of parent arteries steno-sis,one case of nearby branch stenosis and two cases of “false-negative”were observed after ICG angiography.The clips were adjus-ted until the satisfactory blood flew was restored.Postoperative CTA and(or)DSA confirmed the results of intraoperative ICG an-giography.Of the 40 patients underwent follow-up,GOS score was 5 in 30 cases,4 in 7 case,3 in 2 case and 2 in 1 case.Conclusion ICG angiography is a useful way to assess the clipping of aneurysms,blood flew of parent arteries and nearby branches during the aneurysm surgery.It could raise the safety of surgery and further improve the clinical outcomes of intracranial aneurysms.

An endophytic bacterium strain EBS05 from Cinamonum camphra was identified as Bacillus subtilis by morphological taxonomy and sequence analysis of 16S~23S rRNA intergenic spacer regions. Properties of antimicrobial compound produced by EBS05 were assayed. The active compound had the maximum absorbance peak at ?213.5 nm. The antimicrobial activity was stable in solution with pH value from 5 to 8, and decreased significantly in solution with pH value less than 4.0 or more than 9.0. The antimicrobial compound had thermodynamics stability. Its activity changed a little after treated at 60?C~80?C for two hours, and compared with 65% original activity after treated at 1?105 Pa for 30 minutes. The active substance had high resistance to ultraviolet radiation and protease K. Antimicrobial compound was soluble in alcohol solu- tion, which was easily dissolved in methanol and ethanol, but not dissolved in ethyl acetate, acetonitrile and petroleum et al.

ObjectiveTo explore the effect of the Breviscapine (Bre) on rabbit's cardiac muscles after ischemic preconditioning (IP).MethodsThe myocardial ischemic reperfusion model was made with 32 New Zealand white rabbits by silk thread passed around the left circumflex coronary artery and the apex. Model animals were randomly divided into four groups: myocardial ischemia-reperfusion (I/R) group, Bre+I/R group, IP group and Bre+IP group. The changes of the endothelin (ET), nitrous oxide (NO) and the enzymes of the cardiac muscle were measured, and the areas of myocardium infarction were analyzed.ResultsBre and IP could decrease the content of ET, the enzymes of the cardiac muscle and myocardial infarction area; increase the content of the NO. Bre+IP could strengthen the role of protecting the ischemic myocardial cells.ConclusionThe Bre can protect the ischemic cardiac muscle. The Bre+IP can strengthen the protective effect of the IP.

OBJECTIVEAfter performed symptom-limited maximum cardiopulmonary exercise testing (CPET) before and after acute alkalized blood, we repeated CPET with pure oxygen.

METHODSFive volunteers, 3hr after alkalizing blood room air CPET, re-performed CPET inhaling from Douglas bag connected with pure oxygen tank. We compared with those of room air CPETs before and after alkalized blood.

RESULTSAfter alkalized blood oxygen CPET had a similar response pattern as those of CPETs before and after blood alkalization. During the CPET, all breath frequency, minute ventilation and tidal volume at each stage were similar to those of CPETs before and after alkalized blood (P > 0.05),except there was a lower peak tidal volume than those of both CPETs and a slightly higher resting minute ventilation only than CPET after alkalized blood (P > 0.05). After alkalized blood, oxygen CPET, all PaO2 and SaO2 and most Hb were lower than those of both CPETs (P < 0.05). The pHa and [HCO3-]a were higher than those of CPET before alkalized blood (P < 0.05); but were not CPET after alkalized blood (P > 0.05). PaCO2 was similar to that of CPET before alkalized blood (P > 0.05), but was lower than that of CPET after alkalized blood at resting and warm-up (P < 0.05); then was similar to both CPETs at anaerobic threshold (P > 0.05); but was higher at peak exercise higher than those of both CPETs (P < 0.01). Oxygen increased 2,3 volunteers' workload and time at AT and peak exercises.

CONCLUSIONRespiratory response pattern to oxygen CPET after alkalized blood is similar to those of both CPETs before and after alkalized blood. The CPET response is dominantly depended upon metabolic rate, but not levels of pHa, PaCO2 and PaO2.

Objective To observe the effect of splenectomy on mortality and brain water content of rats with brain injury so as to explore novel way for better clinical management of patients with severe traumatic brain injury. Methods Adult male SD rats were randomly divided into three groups, ie, sham operation on brain and spleen (Group A, n = 23), experimental brain trauma & sham operation on spleen (Group B, n =48) and experimental brain injury & splenectomy (Group C, n = 47). Modified Feeney' s method was used to create the animal model of experimental brain trauma, Longa' s scale was applied to evaluate the neurologic defect. Mortality within seven days following brain injury was calculat-ed. In the meantime, the brain water content was detected at days 1 (n = 8), 2 (n = 8), 3 (n = 8) and 7 (n = 7) after brain injury in each group, Results No statistical difference of Longs' s scale was found between Group B and Group C (P > 0.05). The mortalities within seven days after brain injury were 0%, 35.42 and 14.89% in Groups A, B and C respectively, with statistical difference between groups (P<0.05). The brain water content of Groups B and C at days 1, 2, 3 and 7 were (81.98±0.35)% & (81.78±0.41)%, (82.58±0.63)% & (81.81±0.48)% (P<0.05),(82.54±0.54)% & (81.52±0.84)% (P<0.05) and (81.50±0.41)% & (81.21±0.36)% (P>0.05) respectively. Conclusion Splenectomy can effectively reduce brain water content and significantly decrease mortality in rata with brain injury.

0.05).However,the shorter the history of the disease,the better the efficacy of the treatment.The younger the patient was,the better the efficacy of the treatment.Conclusions Vulva dystrophy can be treated with focused ultrasound effectively and safely.This approach appears to be a new promising treatment method.

Objective To explore the safety of the mobilization of peripheral blood stem cells(PBSC)by granulocyte colony-stimulating factor(G-CSF)in elderly donors.Methods 28 peripheral arteriosclerotic occlusive disease(PAOD)elderly patients(aged≥60 years),and 29 healthy sibling young/adult donors(aged＜60 years)for peripheral allogenic stem cell transplantation were included.Blood samples were collected immediately before starting G-CSF and prior to PBSC collection to analyze the following parameters:the WBC counts,fibrinogen(FIB),D-dimer (D-D),thrombin antithrombin complex(TAT),antithrombin(AT)and yon Willebrand factor antigen(vWF:Ag). Results It had a very significant increase in D-D and vWF:Ag and a very significant decrease of AT(P＜0.01),af- ter mobilization by G-CSF,and a increase in FIB and TAT were also observed(P＜0.05,P＜0.01)in elderly group.In the young/aduh group,the increase in FIB was significant(P＜0.05).The elevating extent of D-D and TAT after G-CSF administration was significantly higher in elderly group than that in young/adult group(P＜0.05).Compared to young/adult group,there was a significant increase in thrombotic events and cerebrovascular ac- cident(P＜0.05).Conclusion In PBCS donorsreceiving G-CSF it reveals activation of both coagulation and en- dothelial cells and inhibition of anticoagulant system that can favor the developing of thrombotic events,which is more remarkable in elderly donors.Therefore a careful monitoring for coagulation system should be considered in those elderly cases.