0.2).The lymphocyte counts of the KD area grain group and the group of the KD area grain supplemented with Se were lower than that of the non-KD area grain group, and the CIC level and the hepatic Se content were much lower in the group of the KD area grain than in the other groups (p

There is still evident gap between the humanity education of medical college in China and the foreign country's.We can find the heart of the matter and explore ways of solving the problem,by comparing the present condition of the humanity education of medical college in China and the foreign country's.

Animals ; Cell Cycle Proteins ; biosynthesis ; genetics ; Cell Differentiation ; Cell Line, Tumor ; metabolism ; Gene Expression Regulation, Neoplastic ; drug effects ; Genes, Tumor Suppressor ; Humans ; Intracellular Signaling Peptides and Proteins ; Molecular Sequence Data ; Neoplasm Metastasis ; RNA, Messenger ; biosynthesis ; genetics ; Tretinoin ; pharmacology

Animals ; Antioxidants ; pharmacology ; Ascorbic Acid ; pharmacology ; Cumulative Trauma Disorders ; metabolism ; Lipid Peroxidation ; drug effects ; Male ; Muscle, Skeletal ; injuries ; pathology ; Oxidation-Reduction ; Oxidative Stress ; drug effects ; Rats

Objective To analyze the clinical features of limb salvage surgery with epiphyseal preservation in children and adolescents, and to evaluate the recurrence rate, metastasis, complications, and the joint functional results after tumor resection. Methods From December 1995 to January 2003, we operated on 33 patients aging from 8 to 16 years (average 12.2 years) with diagnosis of primary malignant bone tumor of the extremities with preserving the epiphysis in the limb salvage surgery. In this group, the tumor located in distal femur in 24 cases and in proximal tibia in 9 cases. There were 23 osteosarcomas, 6 Ewing sarcomas, 2 chondrosarcomas, and 2 invasive osteoblastomas. The tumors were staged clinically, 2 cases inⅠA, 2 cases inⅠB, 17 cases in ⅡA, and 12 cases inⅡB. According to the relationship between the tumor and epiphyseal plate, the metaphyseal tumors in children were classified into 3 types: 18 cases were categorized as type Ⅰ, 13 as type Ⅱ, and 2 as type Ⅲ. The patients received 2-4 cycles of preoperative adjuvant chemotherapy, and another 6 cycles after surgery. Serious bone defects after tumor resections were repaired with massive allograft bone transplantation, followed by internal fixation by intramedullary nails and cancellous screws. Results Among the 33 cases, 3 cases were lost to follow up. 29 cases had complete clinical data. Postoperative follow-up was 12-72 months (average 37.6 months). Recurrences were seen in 3 cases, with one local recurrence in type Ⅲ case one year after tumor resection, other 2 recurrences around the femoral vessels in typeⅡcases 15 and 30 months after the tumor resection respectively. The recurrence rate accounted for 10.3%. Amputation was performed for the cases with recurrences. But pulmonary metastasis developed and the patients died. In this cohort, 9 cases died. Five-year survival rate was 57.9%. 4 cases reported 5 complications (17.2%). No patient reported skin necrosis, hematoma, infection, rejection to the allograft, and nonunion at the end of the follow-up. According to the functional evaluation criteria of Enneking, excellent were 11 cases, good 13 cases, fair 3 cases, and poor 2 cases. The excellent or good rate was 82.8%. Conclusion The limb salvage surgery with preservation of epiphysis for malignant bone tumors in children and adolescents guarantees the patient's satisfactory postoperative limb functional results. Preoperative effective adjuvant chemotherapy and prevention of postoperative complications deserve great attention.

[Objective]To investigate the efficacy of early Chinese biotype total hip arthroplasty(THA) in clinical application.[Methods]From October 1997 to March 2004,THA was done in 46 patients(49 hips) with early Chinese biotype.The efficacy was evaluated according to the clinical score and X-ray photographs.[Results]Forty-six patients were followed up for 5~11.5 years(average 8.5 year).The mean Harris hip score improved from 38(35~50) points preoperatively to 82(70~90) points at final follow-up.The imaging observation showed that prothesis loosening occurred in 9 cases.There were hip dislocation in 3 cases.One dislocation occurred on the way to the ward after operation,and the other 4 events occurred after the patients were discharged.Close reduction was all successful.There was 1 case of ectopic ossification,Brooker classification was GradeⅠ.One patient had hip pain and limping.The X-ray photographs showed that there was obvious osteoporosis,but no prothesis loosening occurred.No infection was found.The total good to excellent result was 73.9%.[Conclusion]The early Chinese biotype total hip arthroplasty can relieve the pain.However,the design and the moding parts of the domestic prosthesis need to be modified in order to improve the prosthetic efficacy.

Objective To evaluate the effects of various resection and reconstruction method on pain relief and function restoration for periacetabular metastatic destruction in different grade. Methods This study involved 20 patients, 11 males and 9 females, with the average age of 52 years(range, 43-82 years). The original tumor consisted of 5 renal cell carcinoma, 4 breast carcinoma, 3 lung carcinoma, 2 thyroid carcinoma, 1 prostate carcinoma, 1 rectum carcinoma and 4 unknown primary cancers. A solitary periacetabular metastatic lesion was demonstrated in 14 patients and multi-metastases were seen in 6 patients, and accompanying periacetabular pathologic fractures in 4 patients. As to the Harrington grading system for the periacetabular metastatic destruction, there were 8 grade Ⅰ, 5 grade Ⅱ, and 7 grade Ⅲ. And according to grade Ⅰ, curettage and cement packing (5 cases) as well as stability reconstruction in iliac and acetabulum (3 cases) were performed; grade Ⅱ, curettage, cement packing and total hip arthroplasty with reinforcement ring was performed; grade Ⅲ, en bolc resection of acetabular lesion and modular prosthesis reconstruction was performed. The average score was 5.4(ranged from 3 to 9) according to Tomita scoring system. The pain relief and functional recovery were investigated from the regular follow up postoperatively. Results All patients showed the improvement in pain relief and mobility postoperatively. No prosthetic dislocation, deep infection and leg length discrepancy occurred. The prosthesis or internal fixation loosening happened in 5 of 15 patients at different stage. The median survival time of all patients was 16.5 months (range from 4.2 to 63 months). 2 patients survived over 5 years, 3 over 2 years, 6 over 1 year, 6 over 6 months, and 3 less than 6 months. According to the Enneking functional scoring system, the patients were rated as excellent in 10 cases, good in 8, fair 1 and poor 1 at the 3rd month postoperatively, and for the 7 cases with grade Ⅲ, excellent 2, good 2, and poor 2. The functions of 11 patients survived one year after surgery were excellent in 3, good 4, fair 2 and poor 2. Conclusion The favorable resections and reconstructions for periacetabular metastatic destruction could lead to remarked improvement in pain relief, functional recovery and quality of life.

Objective To investigate the early effect of extracorporeal shockwave(ESW) treatment on distraction osteogenesis of rabbit tibias and its mechanism. Methods 30 adult New Zealand white rabbits were used. After osteotomy of left tibias, improved Orthofix M- 100 bone fixator was applied. After 5 days, bone lengthening of 1 cm was obtained over 10 days. Randomly the animals were divided into ESW and control groups. No ESW treatment was given to the control group. The shock wave was set at 0.54 mJ/mm2 and 1000 shots each time were applied to the central areas in the ESW group. Then the animals were divided into 3 sub- groups, and were killed respectively at 45, 60 and 75 days after osteotomy. During the process, X- ray, bone mineral density (BMD) and histological examinations were conducted for every animal. Results By X- ray and BMD measurements, we found significantly more bone mass increased in the ESW group than in the control group at 45, 60 days after operation (P

Objective To investigate the mechanism and effect of TMP on melanocytes.Methods MTT method, NaOH-assay and Takahashi method were employed to measure the proliferation, melanin synthesis, tyrosinase activity of melanocytes. Results TMP induced a mild effect on melanocytic proliferation ( p

Objective To explore the relationship between predictable ocular motor control and cognitive function in Parkinson's disease(PD). Methods Videonystagmography was used to examine 24 patients with idiopathic PD(PD group) and 24 healthy controls(control group) on predictable ocular motor control.The accuracies of saccade were compared between two groups.The correlation among accuracy for predictive saccade(latency