The centrosome plays a crucial role in the maintaining of cell conformation,mitosis and chromosome seg-regation.It responds to the DNA damage and keeps the genome stability via cross-talking with the intranuclear DNA damage repair system.The apoptosis of tumor cells can be induced through inhibition of the duplication of centro-some.So the inhibitors of centrosomal proteins will be a potential anti-tumor therapy.

Objective To investigate the clinical values of dexmedetomidine in general anesthetic for laparo-scopic cholecystectomy.Methods One hundred patients admitted to our center with cholelithes were prospectively studied.According to the principle of completely random digital table,all patients were randomly signed to dexmedeto-midine group or control group.The primary outcomes were hemodynamic changes and postoperative complications. Results There was no significant differences at t0,t1,t2,t3,t4 and t5 in mean arterial pressure (P >0.05).There was no significant difference in heart rate at t0 (P =0.503),however,compared with the control group,patients in the dexmedetomidine group got a significant reduction in t1,t2,t3,t4 and t5 in heart rate(all P <0.05).Compared with the control group,the operation time of the dexmedetomidine group was significantly shorten[(1 18.52 ±15.42)min vs.(127.24 ±19.14)min,t = -5.673,P =0.021 ],the rate of movement of the center of the operation was significantly decreased (36% vs.64%,χ2 =7.840,P <0.001),the incidence rate decreased significantly (0% vs. 10%,χ2 =5.263,P =0.022).There was no difference between the two groups in intra -operative bleeding volume, hypertension,hypotension,tachycardia,postoperative drainage volume,postoperative bleeding,infection and vomiting (all P >0.05 ).Conclusion Dexmedetomidine contributed to maintaining the hemodynamic stable in general anesthetic for laparoscopic cholecystectomy,and reducing the rate of shivering.

Intravesical instillation after transurethral resection of bladder tumor (TURBT) has been considered as the most important and effective method for the prevention and treatment of non-muscle invasive bladder cancer (NMIBC).Nowadays, the main choices of intravesical instillation are chemical drugs and Bacillus Calmette-Guerin (BCG).For all pa-tients with NMIBC, intravesical instillation should be admistered as soon as possible after TURBT.For patients of G_(1-2)T, an immediate single postoperative instillation of chemotherapy as standard therapy for low-risk disease is enough.For interme-diate-risk patients, it is recommended to use an immediate single postoperative instillation of chemotherapy plus an induc-tion course or maintenance treatment, but the scheme of intravesical instillation should be based on the specific circum-stances of the patients.For high-risk patients, maintenance therapy with BCG should be the first chioce.The combination of intravesical BCG and chemotherapy has certain advantages in treating NMIBC, but its efficacy needs further verifica-tion.Although there is a long history of intravesical instillation after TURBT, the choice of drugs, the time of instillation, and the corresponding dosages are still inconclusive.This article summarizes the strategies of the treatment for NMIBC after TURBT.

[Objective] To evaluate the curative effect of anterior cruciate ligament(ACL)reconstruction for remaining anteromedial or posterolateral bundle and ruptured fiber.[Method]Among 89 cases of ACL rupture,there were 32 cases of sports injury,24 cases training injury,23 cases traffic accidents and 10 cases sprained in daily life.ACL ruptured at the notch of the femur in 24 cases,and at the intercondyle of the tibial in 28 cases.Thirty-two cases were reconstructed with quadri-bundle Hamstring tendon knot press-fit technique and 20 cases were reconstructed with quadriceps tendon press-fit technique with autogenetic patellar bone.ACL anteromedial bundle(AMB)ruptured in 14 cases and posterolateral bundle(PLB)ruptured in 23 cases.The intact bundle and the remnants of ACL were preserved.AMB and PLB were reconstructed with double-bundle Hamstring tendon knot press-fit technique in 37 cases.Absorbable interference screws were used at the tibial tunnel and sutured tendon was knotted across the tibial bone bridge.[Result]The average duration of follow-up were 25 months(14-37 months).Lysholm knee function score increased by 27.7 scores,from average 67.5 scores of pre-operation to average 95.2 scores at the end of the follow-up.Rulermetr examination tibial translation was 4 mm?2 mm in 72 cases and 6 mm?3 mm in 17 cases.Lachman test was negative in 79 case,weakly positive in 8 cases and positive in 2 cases.The function of the knees were improved and the stabilization was strengthened after operation.According to knee therapeutic effect evaluation criterion,76 cases were excellent and 13 cases were good.[Conclusion]To keep the remaining of anteromedial or posterolateral bundle and ruptured fiber for ACL reconstruction is beneficial for the graft revascularization or healing,and is helpful for the position sense or rehabilitation.

As a method of financial management and control,the implementation of cost accounting has a significant influence on management of sicentific research projects.The model patterns of cost accounting in the United Kingdom,the United States and European Union,respectively can be served as practical frameworks to guide Chinese scientific research project funds in terms of accounting forms,methods and contents.Based on the understanding of current domestic development and problrms of cost accounting experiences learned from internation practices are signifcant for improving cost accounting system in scientific research projects of China.

Objective Hair follicle stem cells (HFSCs) can be cultured in vti ro to differentiate into chondrocytes, osteoblasts and adipocytes .The aim of the article was to investigate the culture method of HFSCs and their adipogenic and osteogenic differentiation potentials. Methods Microdissection and two-step enzyme digestion were applied to obtain HFSCs , and HFSCs are purified by differ-ential adhesion method.The cells were cultured in keratinocyte serum-free medium obtaining 10% fetal bovine serum.Flow cytometry was used to detect CD34、β1-integrin and CK15.The third-generation HFSCs were cultured by osteogenic inductor and adipogenic induc-tor respectively . Results Cultured HFSCs were homogeneous in shape , bearing the property of great refraction and typical cobble-stone-morph.By flow cytometry, the expression rates of CD34,β1-integrin and CK15 were 59.6%, 97.0%and 61.1%.Stem cells were in good growing condition from the third-generation cell growth curve.21 days after being induced by osteogenic inductor, calcified nodules appeared after alizarin red staining, while 14 days after being induced by adipogenic inductor, intracellular lipid droplets could be observed after oil red O staining. Conclusion Cultured HFSCs are chaterized by strong growth capacity and multiple differentiation potential .

BACKGROUND:The rise of tissue engineering has opened up new ways for tissue repair and reconstruction of the urinary tract, and the bladder acellular matrix is a better alternative material for urinary tissue engineering.
OBJECTIVE:To construct the compound of hair fol icle stem cells with heterologous bladder acellular scaffold, and to observe the growth of hair fol icle stem cells on the scaffold.
METHODS:Bladder acellular matrix from New Zealand rabbits were prepared and detected using scanning electron microscopy and Masson staining. Passage 3 hair fol icle stem cells were statical y inoculated into the surface of bladder acellular matrix using secondary sedimentation method. Under inverted microscope, cellgrowth was observed, and cellgrowth curves were drawn. cellgrowth on the scaffold surface was observed through histological detection and scanning electron microscope observation.
RESULTS AND CONCLUSION:Prepared bladder acellular matrix was a white translucent film with fiber mesh structure, and no residual cells were seen. Masson staining results indicated that the bladder acellular matrix had col agen structure, and no obvious residual cells. After culture for 48 hours, hair fol icle stem cells grew wel around the bladder acellular matrix under inverted microscope;1 week later, hair fol icle stem cells extended and adhered to the scaffold surface. These findings indicate that hair fol icle stem cells have a good biocompatibility with the bladder acellular matrix through in vitro culture.

BACKGROUND:The hair fol icle stem cells are usual cultured in Dulbecco’s modified Eagle’s medium/Ham’s nutrient mixture F-12 containing 10%fetal bovine serum. Recently, keratinocyte serum-free medium has been used to culture hair fol icle stem cells.
OBJECTIVE:To observe the effects of three different culture media on the proliferation and purity of hair fol icle stem cells.
METHODS:After sterling, the skin of the rat’s beard was cut off, and the vibrissa fol icles were dissected under a stereocroscope. The fol icles were digested by Dispase Ⅱ firstly and by the mixture of trypsin and EDTA secondly. cellsuspension was divided into three pieces based on the average number of cells and respectively cultured by keratinocyte serum-free medium, Dulbecco’s modified Eagle’s medium/Ham’s nutrient mixture F-12 containing 10%fetal bovine serum and keratinocyte serum-free medium containing 10%fetal bovine serum. Hair fol icle stem cells were selected by rapid adherence on col agen type Ⅳ, and passaged.
RESULTS AND CONCLUSION:Cultured hair fol icle stem cells spread to the third generation, and trypan blue assay showed there was no difference in cellsurvival rate among the three groups (P>0.05). cellCounting Kit 8 assay showed that the cells grew slowly in the three groups in the first 2 days. At day 4, the hair fol icle stem cells grew into the growth logarithmic phase, and the proliferative activity was ranked as fol ows:keratinocyte serum-free medium+10%fetal bovine serum>Dulbecco’s modified Eagle’s medium/Ham’s nutrient mixture F-12+10%fetal bovine serum>keratinocyte serum-free medium with a significant difference between the three groups (P<0.05). Flow cytometric examination showed the expression of CD34 in the keratinocyte serum-free medium+10%fetal bovine serum group was lower than that in the keratinocyte serum free medium group (P<0.05). The expressions of CD34, CK15 andβ1-integrin (CD29) in the Dulbecco’s modified Eagle’s medium/Ham’s nutrient mixture F-12+10%fetal bovine serum were lower than those in the other two groups (P<0.05). These findings indicate that we can obtain higher purity hair fol icle stem cells in the keratinocyte serum-free medium+10%fetal bovine serum than in the Dulbecco’s modified Eagle’s medium/Ham’s nutrient mixture F-12+10%fetal bovine serum.

Objective:To investigate the feasibility,effectiveness and safety in the treatment of symptomatic middle cerebral artery stenosis with stenting.Methods:Twelve patients with middle cerebral artery stenosis were treated with stenting from August 2005 to December 2006.Among these patients,9 were male and 3 were female.The meam(SD)age was 69(5.3)years(range 56 to 81 years).The mean(SD)stenosis degree was 84.2%(3.7)(range 50% to 99%).All patients were successfully treated with balloon-expanded stents.and there was not any severe complications.Results:The rate of residual stenosis after the procedures was≤20%.No cerebral ischemic symptoms recurred in the patients over a 6-to 18-month follow-up period.Conclusions:Endovascular stenting is a safe and effective approach in the treatment of symptomatic middle cerebral artery stenosis,and its short-term effect is significant.

Objective To explore the anxious condition and the influencing factors of chronic hepatitis B patients, and to take appropriate care measures. Methods Self-designed questionnaire for general information of patients, a comprehensive Zung self-rating depression scale(SDS)and Zung self-rating anxiety scale(SAS)were used to investigate 100 patients with chronic hepatitis B patients(the study group), and the results were compared with 80 normal persons(the control group). Results The SDS and SAS score of the study group was significantly higher than the control group. The negative emotion factors of the study group included social context, family, education, self- respect. Conclusions Patients with chronic hepatitis B has obvious negative mood, and are influenced by many kinds of factors. Strengthening the comprehensive psychological intervention can improve the negative emotional state, and promote rehabilitation of patients.