Objective To evaluate the magneto-heating effect and cytotoxicity of the carbonyl iron powder as a feasibility for arterial embolization hyperthermia. Methods Different doses of carbonyl iron powder suspensions were prepared in vitro(10 mg/ml,100%;10 mg/ml,50%;or 64 g/L phenol solutions),and heated for 20 minutes in an alternating magnetic field(49.9,79.9,and 110.2 Oe).The influences of the doses of suspensions and currency of magnetic field on the heating effect were observed.Meanwhile,mouse fibroblast L-929 cells were cultured with the suspensions for 2,4,or 7 days.The morphology and relative growth rate(RGR) of the cells were determined by microscopy and MTT assay.The cytotoxicity of the suspensions was then classified. Results The heating ability of the carbonyl iron powder increased with the suspension concentration and the strength of the magnetic field.A optimal therapeutic temperature was achieved at 110.2 Oe with 60 mg/ml carbonyl iron powder suspension.The L-929 cells showed normal morphology after been treated by the carbonyl iron powder(10 mg/ml 100% solution and 50% solution) for 2,4 and 7 days with the 0-1 degree cytotoxicity.Conclusion The carbonyl iron powder has good heating effect under the alternating magnetic field,and is compatible with the tested cells.

Toinvestigate the implementation mode and effectiveness of Problem-Based Learning (PBL) in experimental teaching of physiology,PBL was applied in experimental teaching of circulatory physiology. Comparison of test scores and Dundee Ready Education Environment Measure (DREEM) were used to evaluate teaching quality and teaching environment respectively. The results showed that both test and DREEM scores were higher in PBL group than in control group (P

Objective To estimate relationship between the brain atrophy rate and percent corpus callosum area change in patients with cerebral vascular disease.Methods Forty-six patients with cerebral vascular disease underwent MR scanning twice,at the baseline and at the end of the follow-up period.T1W images at both time points were processed automatically with structural image evaluation using normalization of atrophy(SIENA) software to determine the percent brain volume change(PBVC).In addition,the corpus callosum and the inner table of the skull on the mid-sagittal images of two scans were outlined manually to measure their areas.The percent of corpus callosum area change(PCCAC) was calculated.Then,the relationship between PBVC,PCCAC and age was statistically analyzed.Results Significant correlation was found among the three variables: spearman rank correlation coefficient was-0.295 for PBVC and age(P=0.047),while it was-0.4 for PCCAC and age(P=0.006),and 0.538 for PBVC and PCCAC(P=0.000).Conclusion SIENA software identifies brain atrophy quantitatively in patients with cerebral vascular disease,which correlated with area reduction of the corpus callosum.

OBJECTIVE To analyze the antimicrobial activity of recombinant human ?-defensin 3(rhBD-3) on clinically isolated multidrug-resistant bacterial strains.METHODS The antimicrobial activity of rhBD-3 on clinically isolated multidrug-resistant Staphylococcus aureus,Enterococcus faecium,Acinetobacter baumannii and Pseudomonas aeruginosa from the wards of burns department was measured by turbidity method.RESULTS rhBD-3 Demonstrated antimicrobial activity against all the strains in a dose-dependent manner.The minimal inhibitory concentration(MIC) to Gram-positive strains and Gram-negative strains was 4 ?g/ml and 8 ?g/ml,respectively.CONCLUSIONS rhBD-3 Has significant antimicrobial activity against clinically isolated multidrug-resistant strains and thus implies therapeutic potential as an effective substitute for the present drug-resistant bacteria.

Objective To estimate curative effect of reconstruction of rabbit knee joint cartilage defect with the homogeneitic tissue engineered cartilages.Methods The chondrocytes were isolated and collected from articular cartilages of eight New Zealand white rabbits.The tissue engineered cartilages after culturing chondrocytes and atelocollogen for two days.Cartilage defects were created in both keen joint of twenty-six rab- bits.Complexes of chodrocytes and atelocollagen was grafted into the defect of left knee joint at once as experi- mental group,and no implantation were served as control.General and histological examination were respec- tively performed in both group at four weeks and eight weeks after surgery.Results After implantation,the defects were filled with cartilaginous tissue in experiment group,while there were only tissue in control group. Histologically,defective areas were filled with chondrocytes in experiment group,but only fibroblast in control group.Conclusion The implantation of the tissue engineered cartilages contenting with chondrocytes and atelocollogen can effectively improve reconstruction of rabbit knee joint.

OBJECTIVETo summarize the complications and the early clinical effect of less invasive stabilization system and the femoral condylar support plates in the treatment of AO type C distal femoral fractures.

METHODSFrom September 2007 to February 2012, 46 patients with AO type C distal femoral fractures were retrospectively studied. Of all patients 25 were treated with less invasive stabilization system including 14 males and 11 females with a mean age of (56.3±4.2) years old; according to AO classification, there were 14 cases of C1, 8 cases of C2 and 3 cases of C3 with a mean hospital stay of (15.6±1.7) days. While 21 cases were treated with femoral condylar support plates fixation including 12 males and 9 females with a mean age of (53.8±5.1) years old;there were 13 cases of C1, 6 cases of C2 and 2 cases of C3 with a mean hospital stay of (17.8±2.2) days. Comparative analysis was performed from the operation related index,postoperative complications and Evanich score of the knee joint function between the two groups at follow-up.

RESULTSAll 46 patients were followed up from 13 to 38 months with a mean time of 19.6 months after surgery. Complications included 1 case with infection,3 cases with internal fixation failure, 1 case with nonunion and 1 case with activity limitation of the affected knee. The differences in the incision length, blood loss, fracture healing time were significant between two groups (P<0.05), while there was no significant difference in the duration of operations, hospital stays and the incidence of postoperative complications between two groups (P>0.05). The statistical significance was also found in the Evanich score at last follow-up between two groups (P<0.05).

CONCLUSIONPatients with less invasive stabilization system fixation had the characteristics of less trauma, shorter fracture healing time and better functional recovery. Less invasive stabilization system had became one of the ideal internal fixations in the treatment of AO type C distal femoral fractures.

Adult ; Aged ; Bone Plates ; Female ; Femoral Fractures ; surgery ; Fracture Fixation, Internal ; adverse effects ; instrumentation ; Fracture Healing ; Humans ; Length of Stay ; Male ; Middle Aged ; Postoperative Complications ; epidemiology

OBJECTIVETo explore the choice of therapeutic methods for talar fractures and analyze its clinical effects.

METHODSFrom October 1998 to October 2009, 44 patients with talar fractures were treated in the study, of them, 38 cases obtained follow-up, in which 10 cases with plaster external fixation, 22 cases with open reduction and internal fixation, 6 cases with Blair joint fusion. There were 28 males and 10 females,ranging in age from 19 to 65 year with an average of 33.5 years. According to classification of Matti-Weber, type I was in 3 cases, type II in 15, type III in 16, type IV in 4. The clinical effects were evaluated by the Hawkins standard including pain, active range of the joint, limping.

RESULTSThe mean time of follow up was 4.8 years (range, 1 to 11 years). According to the Hawkins standard, in 10 cases with plaster external fixation, 4 cases obtained excellent results, 2 good, 3 fair, 1 poor; in 22 cases with open reduction and internal fixation, 2 case obtained excellent results, 6 good, 6 fair, 8 poor (the 8 patients accepted second treatment with joint fusion at 3 to 5 years after operation, affected limb of 1 patient occurred crispation for 3 cm, walking with limp, and further treatment was refused result in poor,and others got fair results); in 6 cases with Blair joint fusion, 1 case obtained good results, 4 fair, 1 poor. Diaz disease was found in 12 cases and traumatic arthritis was found in 13 cases in the period of follow-up.

CONCLUSIONTalar fracture usually results in complications and gets bad prognosis. The prognosis is relative with the traumatic degree. Plaster external fixation beseems to the displacement of fracture less than 2 mm; open reduction and internal fixation beseems to the displacement of fracture more than 2 mm; Blair joint fusion beseems to talar body fracture with total dislocation or whose talar body fracture is comminuted severely and the surface of joint can not be repaired.

Adult ; Aged ; Female ; Follow-Up Studies ; Fracture Fixation ; Fractures, Bone ; surgery ; therapy ; Humans ; Male ; Middle Aged ; Talus ; injuries ; surgery ; Treatment Outcome

Objective To compare the effects of fundus-first laparoscopic cholecystectomy and laparoscopic subtotal cholecystectomy in complicated cholecystolithiasis cases. Methods The effects of fundus-first laparoscopic cholecystectomy (n = 21) and laparoscopic subtotal cholecystectomy (a = 18) in the 39 cases of complicated chole-cystolithiasis from our hospital within 2 years were analyzed retrospectively. Results The operation time in subtotal laparoscopic cholecystectomy group was shorter than in fundus-first laparoscopic cholecystectomy group (88.89±18.11) min vs. (109.52±21.79) min, P < 0.05). Less blood lose (82.78±44.96) ml and fluid replacement (847.22±169.32)ml during the operation were observed in the former group than those in the later group (116.67±53.23) ml and (964.29±147.60) ml, respectively, P < 0.05). However, the patients' postoperative recovery time and the duration of postoperative hospital staying were similar in the two groups(5.56±1.20) days vs. (5.29±1.38) days, P > 0.05). Conclusions Proper use of subtotal laparoscopic cholecystectomy in complicated cholecystolithiasis cases can simplify the operation and obligate the operation time, which will increase the safety of the operation with the outcome similar to fundus-first laparoscopic cholecystectomy.

OBJECTIVETo observe the therapeutic effect of Jiangzhi Tiaoya Granule (JZTYG) in treating essential hypertension and its protection on function of vascular endothelial cells (VEC).

METHODSFifty-nine patients of essential hypertension divided into two groups were treated with JZTYG (the treated group) and Jinjia Yixintong (the control group) respectively. The changes of symptoms, signs, blood pressure, heart rate were observed and the levels of endothelin (ET), calcitonin gene related peptide (CGRP) content were determined by radioimmunoassay (RIA).

RESULTSThe total effective rates of JZTYG in lowering blood pressure and improving symptoms were both 90.0%, markedly effective rate in lowering blood pressure and improving symptoms was 36.7% and 60.0% respectively. The symptom improved in the treated group was better than that in the control group (P < 0.05). It also could reduce the plasma ET level (P < 0.05) and ET/CGRP ratio (P < 0.01), and increase the CGRP level (P < 0.05).

CONCLUSIONJZTYG has a promising clinical therapeutic effect in treating essential hypertension and is able to protect the VEC function.

Adult ; Calcitonin Gene-Related Peptide ; blood ; Drugs, Chinese Herbal ; therapeutic use ; Endothelin-1 ; blood ; Endothelium, Vascular ; physiopathology ; Humans ; Hypertension ; blood ; drug therapy ; physiopathology ; Male ; Middle Aged ; Phytotherapy

Metastatic epidural compression of the spinal cord is a significant source of morbidity in patients with systemic cancer. With improvment of oncotheray, survival period in the patients is improving and metastatic cord compression is en- countered increasingly often. Surgical management performed for early circumferential decompression for the spinal cord com- pression with spine instability, and spine reconstruction performed. Patients with radiosensitive tumours without spine instabili- ty, radiotherapy is an effective therapy. Spinal stereotactic radiosurgery and minimally invasive techniques, such as vertebro- plasty and kyphoplasty, percutaneous pedicle screw fixation, radiofrequency ablation are promising options for treatment of cer- tain selected patients with spinal metastases.
Decompression, Surgical ; Humans ; Minimally Invasive Surgical Procedures ; Spinal Cord Compression ; therapy ; Spinal Neoplasms ; secondary ; therapy