CD40 Ligand ; pharmacology ; HL-60 Cells ; drug effects ; Humans ; fas Receptor ; metabolism

Humans ; Male ; Osteosarcoma ; complications ; diagnostic imaging ; surgery ; Ultrasonography ; Wounds and Injuries ; complications ; Young Adult

BACKGROUND:Elderly patients have more loose bone. After fractures, bones are mostly crushed. Simultaneously, many elderly patients experience many internal diseases. Various organs have dysfunction. Surgery tolerance is poor, which also brings difficulty in treatment with internal fixator, and increases the risk of therapy. Thus, the choice of internal fixation method is not uniform. OBJECTIVE: To compare and analyze the repair effects of proximal femoral nail anti-rotation blade and anatomic proximal femoral locking plate in treatment of unstable intertrochanteric fractures in the elderly. METHODS:A total of 100 elderly patients with unstable intertrochanteric fractures were selected from the Youyi Branch, Kunshan First People’s Hospital from April 2011 to June 2013. They were randomly assigned to two groups. Patients in the experimental group received internal fixation with proximal femoral nail anti-rotation blade. Patients in the control group received anatomic proximal femoral locking plate. After treatment, folow-up was conducted. Operative indexes, postoperative Harris score for hip function and incidence of complications were compared and analyzed in both groups. RESULTS AND CONCLUSION: No significant difference in various indexes was detected in both groups (P > 0.05). Harris scores were significantly better in the experimental group than in the control group (P < 0.05). Postoperative complications were significantly less in the experimental group than in the control group (P < 0.05). These results indicated that internal fixation of proximal femoral nail anti-rotation blade for unstable intertrochanteric fractures in the elderly achieved satisfactory results in the recovery of joint function and had the advantage of few complications.

Objective To investigate the effects of different magnitudes of mechanical stress on human interverte-bral disc degeneration. Methods The human intervertebral disc cells were subjected to different magnitudes of mechanical stress (0, 6%, 12%, or 18%elongation) for 24 h using a Flexercell Strain Unit. The mRNA expressions of anabolic genes (col-lagen-1A1, collagen-2A1, aggrecan and versican) and catabolic genes (MMP-3, MMP-13, ADAMTS-4 and ADAMTS-5) were examined by real-time PCR and Western blot methods. Results The expression levels of collagen-1A1 and collagen-2A1 were increased at 12%of mechanical stress, and collagen-2A1 was decreased at 18%of mechanical stress compared with those of control. The mRNA expressions of catabolic genes, MMP-13 and ADAMTS-5, were increased at 12%and 18%of mechanical stress than those of control. The mechanical stretch induced a magnitude-dependent increase in ADAMTS-4 synthesis, which was finely tuned by stretching-triggered activation of distinct mitogen-activated protein kinase cascades. Specifically, an ERK1/2 specific inhibitor, U0126, significantly inhibited the stretching-induced ADAMTS-4 expression, whereas the inhibitors of p38 and JNK, SP6000125 and SB203580, showed only slightly effect on the stretching-induced ADAMTS-4 expression. Conclusion The different magnitudes of mechanical stretch exhibited different effects on the bio-logical behavior of intervertebral disc cells, which profoundly affects the intervertebral disc degeneration.

BACKGROUND:After peripheral nerve injury, to inhibit scar formation by drugs is the key to functional recovery. To reduce the amount of scar formation we designed a prednisolone-loaded film which can sustain drug release and good achievement in in vitro drug release test.
OBJECTIVE:To prepare the prednisolone implantable film and investigate its in vivo biocompatibility and safety.
METHODS:Prednisolone-loaded nanoparticles were first prepared with reverse micellar emulsion-solvent evaporation method, and the composite film and drug-loaded film were further prepared. Then, we investigated the in vivo biocompatibility of drug-loaded film through celltoxicity test, hemolysis test, acute systemic toxicity test, chronic systemic toxicity test.
RESULTS AND CONCLUSION:After cultured for 7 days, the relative growth rate of L929 mouse fibroblasts was 92.6%, showing no cytotoxicity. The hemolysis rate of the film was 0.59%, indicating that the material had no hemolysis action. No abnormal biological behaviors were seen in mice after intraperitoneal injection of film extracts, and there were no changes in liver and renal functions in rats. As il ustrated above, we can safely come to a conclusion that prednisolone-loaded film possesses good biocompatibility and can be safely used in the experiment of reducing the scar at sites of peripheral nerve repair.

Coal Mining ; Humans ; Occupational Diseases ; prevention & control ; Occupational Health ; Tuberculosis ; prevention & control

How to remove the well fixed cement or cementless prosthesis and get a completely distal cement removal in the rTHR are critical to the outcome of revision. Because of higher rate of union, excellent intraoperative exposure, and adjustment of abductor tension, ETO has been widely applied to rTHR and complicated primary THR by foreign scholars. Furthermore, this technology has wide indications, very few contraindications, high cure rates,and low complications rate. ETO turns out to be a safe and effective revision technology. In the article, the indication, contraindication, complications and advantages of this technique were reviewed.
Arthroplasty, Replacement, Hip ; methods ; Humans ; Osteotomy ; adverse effects ; methods

Objective To study the HLA-DRB1 genotupe and their relation with OBI infection.Methods HLA-DRB1 genotyping was conducted in 102 patients OBI infection and 201 health controls,by using polymerase chain reaction sequence-based typing (PCR-SBT)method.The association between HLA-DRB1 genotype and OBI was also studied.Results Compared to 201 health controls,the allele frequency of HLA-DRB1 * 0405 (1.980 4％) (x2 =12.477 0,P =0.000 0,OR =16.367 3) * 0803 (4.257 3％) (x2 =30.689 8,P =0.000 0,OR =36.454 5)、* 1101 (5.545 9％) (x2 =4.471 2,P =0.034 5,OR =1.903 8)、* 1201 (1.481 6％) (x2 =8.591 9,P =0.003 4,OR =12.151 5) were markedly higher.The allele frequency of HLA-DRB1 * 0701(2.230 8％) (x2 =5.585 5,P=0.018 1,OR=0.417 7)、* 1301 (0.245 4％) (x2 =4.513 7,P=0.033 6,OR=0.147 4) 、* 1302(0.491 4％) (x2=11.369 1,P=0.000 7,OR=0.000 0) 、* 1312(0.245 4％) (x2 =5.0198,P=0.025 1,OR=0.136 5) 、* 1501(4.257 3％) (x2=10.763 1,P=0.001 0,OR=0.000 0)was obviously lower than than in HBV patients.Conclusion HLA-DRB1 * 0701、* 1301、* 1302、* 1312、* 1501 are closely related with susceptibility to OBI,and HLA-DRB1 * 0405、* 0803、* 1101、* 1201 is closely related with resistance to OBI.

Objective:To evaluate the diagnostic value of endobronchial ultrasonography(EUS)-guided fine-needle aspi-ration(FNA)in diagnosis of lung cancer.Methods:EUS-guided FNA was used in16patients suspected of lung cancer of sub-mucosal and parabronchial structures.Bronchoscopic methods failed to detect any abnormality in them.Results:Final diag-noses were made in15patients,including8cases of bronchopulmonary adenocarcinoma,4cases of bronchopulmonary squa-mous carcinoma and3cases of lymphatic metastasis of bronchral adenocarcinoma.The sensitivity of EUS-guided FNA was 93.8%. There was no severe complications associated with the use of EUS.No patients developed bleeding or pneumatotho rax.Conclusion:EUS is useful in detecting pathologic changes in the submucosal and parabronchial structures.EUS guided FNA is accurate and safe for diagnosis of lung cancer,especially in small nodes.

Objective To study the imaging features of the pleomorphic adenomas of the minor salivary glands in the palate and to improve its diagnostic validity. Methods CT and MRI manifestations of 6 patients with palatal pleomorphic adenomas confirmed pathologically were analyzed retrospectively. There were 2 males and 4 females, and their age ranged from 19 to 54 years, with the mean age of 36.3 years. Results Among 6 cases, 5 tumors located in hard palate, and 1 in soft palate. 4 lesions were round like, and 2 were lobulated. Most tumors showed soft tissue density on CT, slightly long T 1 and slightly long T 2 signal intensity on MRI. Cystic degeneration could occur in the central part in some lesions, which appeared as much lower density or obviously long T 1 and long T 2 signal intensity. On post contrast MR scans, the lesions usually showed slightly homogeneous enhancement. Conclusions Pleomorphic adenomas of the minor salivary glands were the most common benign tumors in the palate. Combined with the clinical history, typical CT and MRI appearances, a definitive diagnosis can be made.