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.

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] 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.

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.

[Objective]To explore the effects of extracorporeal shock waves(ESW) therapy on tendon-bone healing after reconstruction of the anterior cruciate ligament(ACL).[Method]Animal model of reconstruction of the anterior cruciate ligament in 18 healthy F/M New Zealand white rabbits(2～3 months old) were established using digital long extensor tendon and randomly classified into 2 groups.The ESW group was given extracorporeal shock waves therapy on 24 hours after reconstruction of the anterior cruciate ligament while the control group with only reconstruction of the anterior cruciate ligament but no more therapy.All animals were sacrificed at 2、4、8 weeks after operation for histological examinations.The specimens were stained with hematoxylin-eosin and Masson trichrome to investigate pathology change of the tendon-bone healing tissue.The ink intravascular injection was used to observe the neo-vascularization of tendon-bone healing tissue.[Result]The histological examination revealed that at 4 weeks after operation,the ESW group,tendon-bone interface was filled with proliferated fibroblasts and chondroblasts,the collagen fibers were obviously increased and regularly arranged.At 8 weeks after operation,the healing tissue at the bone-tendon interface had developed into dense connective tissue,the collagen fibers were formed in abundance and the perpendicular collagen fibers were regularly and longitudinally arranged.The transition zones of collagen fibers,fibrocartilage and bone(the structure alike a direct ligamentous insertion) occurred in the local region of tendon-bone interface.The histological observations showed that the tissue healing at tendon-bone interface of the ESW group were quicker than those of the control group.The proportion of neo-vessels at the tendon-bone interface of the ESW group were significantly higher than those of the control group at 4 and 8 weeks after operation(respectively P=0.028,P=0.008).[Conclusion]Extracorporeal shock wave treatment can significantly improve the tendon-bone early healing after reconstruction of the anterior cruciate ligament in rabbits.

[Objective]The purpose of this study is to investigate articular cartilage injuries in patients undergoing arthroscopy of knee joint.[Method]From November 2004 to September 2005,568 patients underwent arthroscopy in the orthopedic department of Chinese PLA General Hospital.[Result]Totally 923 cases of articular cartilage injuries in 389 patients were documented,with the incidence rate of 68%.The main articular cartilage injuries were found on the medial femoral condyle(26%)and patella(25%).The incidence rate had signicant difference between patients over and under 40 years(88% VS 36.5%).Patients between 40 and 60 years were most susceptable to articular cartilage injuries.[Conclusion]Articular cartilage injuries are common in patients after arthroscopy.Early arthroscopy and treatment may benefit the patients.

Articular cartilage injury is a problem in the field of orthopedics,osteochondral allografis transplantation is an effective way in the treatment of articular cartilage injuries.The article summarizes the research advances of osteochondral allograft transplantation,including the indication and contraindication of the methods,currently application in clinical treatment,and further exploring three hot topics in the osteochondral allograft transplantation,such as the spread of diseases,immune rejection and graft preservation.These literature review showed that osteochondral allograft transplantation to repair cartilage damage has a specific advantage,but still has some problems for further promoting.

interface screw,with significant difference(P0.05).[Conclusion]All internal fixations in this study could meet biomechanical requirement,but Rigidfix and Intrafix showed more advantages.