Objective To investigate the quality of life (QOL) of patients with frequent premature ventricular contractions (PVCs) and the effects of radiofrequency catheter ablation (RFCA) on them.Methods 120 patients with frequent PVCs,100 cases with frequent APCs and 60 healthy persons were assessed by 36-Health survey questionnaire (SF-36) originally.Three months later,the QOL of 48 cases received RFCA and 72 cases with drug therapy were evaluated again by SF-36.Meanwhile,decrease of PVCs were also calculated between these two groups.Results The scores of physiological function and mental health in patients with PVCs were lower than that of cases with APCs,while the score of bodily pain in patients with PVCs was higher (P value:0.0002-0.0380).In addition,the quality of life in patients with frequent PVCs were worse than healthy control(P value:0.0001-0.0915).Three months later,PVCs in 48 cases with frequent PVCs received RFCA were much fewer than that of 72 cases with drug therapy (t=18.8682,P＜0.01),and the quality of life in the former was much better than the latter (F=15.329-39.274,P＜0.01).Conclusion Frequent PVCs can deteriorate the patients' quality of life.RFCA can control or eliminate PVCs in these patients and markedly improve the quality of life of them.

Pain is a common symptom among populations with life-limiting illnesses. Like all clinicians, family physicians involved in the care of these patients should acquire the skills and knowledge required to provide good pain control in order for the patients and their caregivers to achieve optimal quality of life. This paper is a review and presentation of the definition, classification, assessment and management of pain at the end of life based on available guidelines and evidence.

Bone Transplantation ; Humans ; Mandible ; transplantation ; Transplantation, Homologous

Forensic Ballistics ; Humans ; Maxillofacial Injuries ; surgery ; Wounds, Gunshot ; surgery

Humans ; Maxillofacial Injuries ; diagnosis ; surgery ; Wounds, Gunshot ; diagnosis ; surgery

BACKGROUND: Xenograft cortical bone is an easy and inexpensive bone graft material, which has good biocompatibility and bio-mechanical properties. As a bone graft, it can function as biological framework for new bone growth and bio-supporting. Moreover, it can also be processed into internal fixation devices.OBJECTIVE: To review the biological properties, preparation methods and clinical applications of heterogeneous cortical bone for fracture fixation.METHODS: A computer-based online search of Pubmed database (1990-01/2009-05) and CNKI (1990-01/2009-05) was performed for related articles with key words of "Xenograft cortical bone, Bone graft, Fixation" in English and Chinese.RESULTS AND CONCLUSION: A total of 128 articles were collected. Xenograft cortical bone has a good biological performance, in particular, a certain degree of bio-mechanical properties. It is not only able to complete bone filling, bone induction, but also function as internal fixator following processing. However, the traditional preparation process reduces their bio-mechanical properties. Heterogeneous cortical bone can be widely used in intra-articular fractures and cancellous bone fracture fixation, and can be self-absorbed, avoiding the second operation. However, its instability limits its initial mechanical properties of fractures at other sites.

ObjectiveTo compare quantitative proteomic analysis of bromotetrandrine (W198) which was a Class Ⅰ new antitumor drug in China and tetrandrine (Tet) in K562 cell line using 18O-labeling method.MethodsTo illustrate its mechanism,a shotgun quantitative proteomic strategy employing 2D LC-MS-MS and trypsin catalyzed 18O-labeling quantification was carried out in this study.Compared to normal chronic leukemia cell line K562 and K562 induced by Tet,the proteomic changes of K562 induced by W198 were investigated.In order to validate the quantitation by the 18O-labeling,the analysis was done on an equivalent sample composed of the same amount of labeled and unlabeled proteins from normally cultured cells to act as a reference to the comparative sample.ResultsA threshold of ± 2-fold change for deciding whether a protein concentration was changed was settled for the following experiments.Comparing the 105 identified soluble proteins' expression levels of the apoptosis starting up K562 cells after W198 induction with the normally cultured cells,16 proteins were found with significantly altered expression levels after W198 treatment.Eight proteins were up-expressed including HMGB2,peroxiredoxin-2,and eIF4A-I,etc.Eight proteins were down-expressed including TCP-1,GRP94,GST-π,and SFGHs,etc.Compared to K562 induced by Tet,eight proteins of K562 were found with significantly altered expression levels after W198 treatment.Five proteins were up-expressed including HSP 90-β and 40S ribosomal protein S15a,etc.Three proteins were down-expressed including phosphoglycerate kinase 1,isoform 5 of interleukin enhancer-binding factor 3,etc.ConclusionThe 18O-labeling MS-MS-based method is ideal as a discovery tool,but it is not suitable for validation using a large number of samples.Other more effective methods,such as Western blotting should be used for further validation of candidate cancer proteins discovered from 18O-labeling samples.In total,105 soluble proteins were discovered,and 16 proteins were found with significantly altered expression levels after W198 treatment.These repressed or activated proteins are the potential drug targets of W198,which may provide novel targets for future development ofbiomarkers for cancer therapy.

Objective:Study the effect about cone beam CT(CBCT) image guidance sytem to improve the positioning accuracy and reducing the set-up uncertainty in precise radiotherapy. Methods:Use CBCT system to scan head and neck tumors patients (30 cases) and chest tumor patients (40 cases), including head and neck tumor patients were scaned 90 times, chest tumor patients were scaned 113 times. Setup deviation statistics about anterior and posterior, head and feet, left and right direction. Results:The patients with head and neck cancer, the maximum error of anterior-posterior is 6mm, Three directions errors which greater than 3mm all less than 10%. Patients with chest tumor position error are in the head and foot direction, greater than 5 mm up to 21.51%. Before and after the direction of the error did not exceed 5mm. The left and right direction greater than 5 mm up to 4.53%. Conclusion:It greatly enhances the precision of radiotherapy, improved the curative effect of radiotherapy by using CBCT online image guidance system for the patient position correction. Compared with EPID, patients scaned with CBCT absorb smaller cumulative dose, the image resolution is higher, image matching is more accurate. But compared with the ordinary helical CT,the resolution and scanning range also need to improve.

Objective To explore the effects of wound healing and histological changes by utilizing ultrapulse CO2 fractional laser for the treatment of superficial scar in dermal-epidermal junction (DEJ) in rabbit ears.Methods We adopted traditional iodophor treatment and moist exposed burn ointment treatment repairing the wound and utilizing ultra pulse CO2 fractional laser for the treatment of rabbit ears superficial scar.The superficial scars in rabbit ear were induced with ultra pulse CO2 fractional laser.In 1,2,4,8 weeks tissue samples would be taken.Using electron microscopy we observed DEJ ultrastructure and light microscopy to observe the histological changes of the dermal papilla and PAS staining for epidermis basement membrane.Results The wound healing time of moist exposed burn ointment group was shorter than that of iodophor group (P＜0.05).The number of hemidesmosomes and anchoring fibers in the moist exposed burn ointment group on the 8th week was more than the 1th week,The number of hemidesmosomes and anchoring fibers in the iodophor group on 8th week was more than 1th week (P ＜0.05).The number of hemidesmosomes and anchoring fibers in the iodophor group was less than the moist exposed burn ointment group (P＜0.05).Conclusions U1trapulse CO2 fractional laser can cause ultra structural changes in scarring dermal-epidermal junction area,wet wound healing environment promotes the reconstruction of DEJ district organization,and rebuilding the function of the scar skin has the positive significance.

Objective To compare oligoneucleotide arrays with sequence specific primer polymerase chain reaction (PCR-SSP) for HLA-DR genotyping in order to develop a new technique of genotyping for donors and recipients in kidney transplantation. Methods Sixty DNA samples of donors and recipients were subjected to HLA-DR typing by oligoneucleotide arrays and PCR-SSP simultaneously. The results of the two typing techniques were analyzed.Results Of 60 samples using the two above-mentioned typing techniques, the results in 56 samples were identical with the accordance rate being 93 %, and in the remaining 4 unidentified samples verified by the other laboratory, oligoneucleotide arrays made 1 allele miss typing for 2 samples , 1 allele mistaking for 1 and PCR-SSP made 1 allele miss typing for 1 sample. Among the total, 20 samples retyping was made and its reproduction rate was 96 %. Conclusion The oligoneucleotide arrays technique for HLA genotyping has advantage of high sensitivity, high efficiency, high level standard and it is incomparable.