BACKGROUND:The finite element model has been developed from two-dimensional model to three-dimensional model, from linear model to nonlinear model. As the advantage of this method in the analysis of mechanical characteristics of the irregular objects, the finite element model has been widely used in the research of orthopedic biomechanics, especial y in the research of hip joint. OBJECTIVE:To analyze the stress state of human femur with finite element analysis method and to investigate a method that can rapidly construct femoral finite element model and precisely analyze the biomechanics. METHODS:Normal male femur was used as specimen for CT scan to obtain cross-sectional images of femur in each slice. Three-dimensional reconstruction was performed with DICOM data and MIMICS software, then the femoral three-dimensional finite element model was established with the finite element analysis ABQUS 6.8 software, and the stress distribution of the model was analyzed under loading condition. RESULTS AND CONCLUSION:Based on DICOM data, three-dimensional finite element model of femur was constructed more quickly and precisely. The models were divided into 38 636 nodes and 201 422 units. The model included the parts of cortical and cancel ous bone. The biomechanical test results were accorded with the previous results, so the model could objectively reflect the real femur shape and biomechanical behavior with high precision. The Mimics software provided a simpler and effective method for the construction of femur model and improved the efficiency of modeling, and the three-dimensional finite element model based on DICOM data was accurate in shape and can be used for the normal research on biomechanical behavior of femur. The stress distribution analyzed with ABQUS 6.8 software is consistent with the clinical observation.

Child, Preschool ; Dexamethasone ; adverse effects ; Diaphragm ; drug effects ; Humans ; Infusions, Intravenous ; Male ; Spasm ; chemically induced

Objective:To observe the efficacys and side effects of gefitinib(Iressa)and docetaxel(aisu)as the second-line treatment for advanced non-small cell lung cancer(NSCLC)patients.Methods:A total of 98 patients with advanced non-small cell lung cancer who had failed to previous fimt-line chemotherapy were randomly divided into two groups:gefitinib group and docetaxel group.In the gefitinib group,50 patients took Iressa 250 mg once daily until disease progression or intolerable toxicity occurred.In the docetaxel group,58 patients were treated with aisu 75mg/m~2 i.v.in 60 minutes in day 1.The regimen was repeated every 21 days for at least 2 consecutive cycles.They were assessed on the basis of RECIST evaluation standard of therapeutic effect for solid tumor.Results:In the gefitinib group,the response rate was 22.4%(11/49),the clinical benefit rate was 55.1%(27/49),median survival time was 7.1 months and 1-year survival rate was 35.9%.In the docetaxel group,the response rate,clinical benefit rate,median survival time and 1-year survival rate were 18.8%(9/48),50.0%(24/48),6.9months and 31.5%,respectively(P>0.05).The incidences of Ⅰ～Ⅳ degree and Ⅲ～Ⅳ degree rash were 51.0%and 10.2%in the gefitinib group,significantly lower than those in the docetaxel group (P=0.0000 and P=0.0296).The incidence of Ⅰ～Ⅳ degree diarrhea was significantly higher in the gefitinib group than that in the docetaxel group(P<0.01).The incidence of leukopenia was significantly higher in the docetaxel group than that in the gefitinib group(P=0.0000).The incidences of thrombocytopenia and anemia of Ⅰ～Ⅳ degree were also higher in the docetaxel group (P=0.0000 and P=0.0266).The improvement rate of quality of life was higher in the gefitinib group (P<0.05).Conclusion:Gefitinib has a similar anti-tumor effect as docetaxel on advanced NSCLC patients who have failed to previous fimt-line chemotherapy.Gefitnib can achieve higher improvement rate of quality of life in advanced NSCLC patients,with a lower incidence of toxicity.

Objective To study the relationship between serum amyloid A(SAA)and the common carotid intima-media thickness(IMT)in type 2 diabetic(T_2DM)patients.Methods Sixty-nine patients with type 2 diabetes,and 20 healthy subjects regarded as the normal controls(NC)were enrolled in the study from January to July of 2005.SAA levels were measured using ELISA.The carotid IMT were examined by hypersensitive color Doppler ultrasonography.Results SAA level was significantly elevated in type 2 diabetes group compared with that in the control3.08(2.1~5.06)mg/L vs 1.37(1.07~1.86)mg/L,P

Objective To study the clinical effect and influence of Feiliuping Ⅱ on the quality of life quality of lung cancer patients. Methods 60 patients of later stage of lung cancer with definite diagnosis and stages in pathology were chosen, who had approximate condition. Among them, 30 cases were in Chemotherapy-only group, and 30 cases were in Feiliuping Ⅱ +Chemotherapy group. Chemotherapy was the treatment in Chemotherapy-only group. Besides chemotherapy, Feiliuping Ⅱ was taken orally, 20 g tid poin Feiliuping Ⅱ +Chemotherapy group. Three months were a period of treatment. To evaluating effect of two groups from clinical curative effect, symptoms changes, and quality of life. Results After treatment, stable rate of focus were notably higher in Feiliuping Ⅱ +Chemotherapy group than that in Chemotherapy-only group (P

Fu's subcutaneous needling (FSN) is a modern approach developed from traditional Chinese acupuncture. It could give some stimulation in the subcutaneous region that has a quick and long-lasting effect on soft tissue injuries and some of the internal medicine diseases. It is a safe approach without adverse reaction. Through analysis of the features and possible mechanism of FSN, it is believed that research on mechanism of FSN is beneficial to the development of modern medicine, especially to pain management.
Acupuncture Analgesia ; instrumentation ; methods ; Acupuncture Points ; Humans ; Pain Management ; instrumentation ; methods

Objective To investigate the effects of clinical pharmacist intervention in the clinical application of antibiotics combined with the index management.Methods The data of antibiotics usage rate and intensity, the microbial test sample submission rate, and the clean incision preventive usage rate of inpatients and outpatients were analyzed by chi-square test in the same period before (2015) and after (2016) the clinical pharmacist intervention.Results After intervention, the antibiotics usage rate of inpatients and outpatients were lower than that of 2015 (50.02% and 25.72%, P<0.05).In 2016, the usage intensity of antibiotics was 50.59%, while it was 62.39% in 2015.At the same time, the microbial test sample submission rate increased from 13.96% to 27.49%(P<0.05).In 2016, the clean operation preventive usage rate of antibiotics decreased month by month.In the meantime, the reasonable rate of delivery timing, variety selection, and administration time of clean operation preventive usage of antibiotics were on the rise.Conclusions The professional intervention of clinical pharmacistis benefit for the routine, standardization, and professionalization of clinical antibiotics application.It also promotes the rational use of drugs and the progress of hospital pharmacy.

Objective To determine whether leflunomide could control the proinflammatory cytokine expression induced by anthralin via inhibiting the activation of nuclear factor ?B (NF-?B). Methods The expression of NF-?B inhibitory protein ? (I?B?), was analyzed by using Western blot method. MTT assay and RT-PCR were used to assess the proliferating activity and mRNA expression of intercellular adhesion molecule-1 (ICAM-1) of HaCaT keratinocytes, respectively. Results Leflunomide inhibited the degradation of I?B? by anthralin, i.e. the activation of NF-?B signaling pathway, in a dose-dependent manner. The inhibition of keratinocyte growth by anthralin did not correlate with the activation of NF-?B. Under the experimental conditions used, leflunomide was shown to be able to significantly inhibit the over-expression of ICAM-1 on keratinocytes induced by anthralin; this inhibition occurred in a dose dependent manner. Conclusions Growth inhibition by topical anti-psoriatic medication anhtralin is unrelated to the NF-?B-dependent signaling pathway, and leflunomide can control ICAM-1 expression induced by anthralin via inhibiting the activation of NF-?B.

In order to identify the differentially expressing gene of bone marrow mesenchymal stem cells (MSCs) stimulated by electromagnetic field (EMF) with osteogenesis microarray analysis, the bone marrow MSCs of SD rats were isolated and cultured in vitro. The third-passage cells were stimulated by EMFs and total RNA was extracted, purified and then used for the synthesis of cDNA and cRNA. The cRNA of stimulated group and the control group was hybridized with the rat oligo osteogenesis microarray respectively. The hybridization signals were acquired by using X-ray film after chemiluminescent detection and the data obtained were analyzed by employing the web-based completely integrated GEArray Expression Analysis Suite. RT-PCR was used to identify the target genes: Bmp1, Bmp7, Egf and Egfr. The results showed that 19 differentially expressing genes were found between the stimulated group and the control group. There were 6 up-regulated genes and 13 down-regulated genes in the stimulated group. Semi-quantitative RT-PCR confirmed that the expressions of Bmp1, Bmp7 mRNA of the stimulated group were up-regulated (P<0.05) and those of Egf, Egfr were down-regulated (P<0.05). It was suggested that the gene expression profiles of osteogenesis of the bone marrow MSCs were changed after EMF treatment. It is concluded that the genes are involved in skeletal development, bone mineral metabolism, cell growth and differentiation, cell adhesion etc.
Bone Marrow Cells/*cytology ; Cell Differentiation ; Down-Regulation ; Electromagnetic Fields ; Gene Expression Profiling ; Gene Expression Regulation ; Mesenchymal Stem Cells/*cytology ; Nucleic Acid Hybridization ; Oligonucleotide Probes/chemistry ; Osteogenesis/*genetics ; RNA, Complementary/metabolism ; Reverse Transcriptase Polymerase Chain Reaction

AIM:To evaluate the feasibility and significance of nasal endoscope combined with Neodymium-doped Yttrium Aluminium Garnet ( Nd:YAG ) laser in the treatment of recurrent dacryocystitis.
METHODS: Forty-eight cases (48 eyes) with recurrent dacryocystitis were treated by nasal endoscope combined with Nd:YAG laser. The tubes were kept in place for 3-6mo after operation. The follow-up time was 3-18mo.RESULTS: Symptoms was completely resolved in 46 eyes and improved in 2 eyes, the cure rate was 100%. There were no other complications.
CONCLUSION: Nasal endoscope combined with Nd:YAG laser provides an ideal therapeutic for recurrent dacryocystitis because of its many advantages such as a few complications, simple operation, no scars on face and so on and is fit for clinical application in primary hospitals.