Adult ; Female ; Humans ; Male ; Middle Aged ; Motor Vehicles ; Occupational Health ; Physical Examination ; statistics & numerical data ; Young Adult

Objective To explore the mechanism of apeptosis in rheumatoid arthritis synoviocyte induced by dihydroartemisinin. Methods Synovial tissues were cut from rheumatoid arthritis patients when who was under knee prosthesis. Apoptosis was detected with flow cytometry. Western blot was performed to assess ser473-phosphorylated Akt. EMSA (electrophoretic mobility shift assay) was used to ana-lyze NF-κB activation. Results Dihydroartemisin can induce apoptosis in rheumatoid arthritis synoviocyte in a dose-dependent manor from 2.5μmol/L to 10μmol/L. Rheumatoid Arthritis synoviocyte cultured with dihydroartemisinin in 5μmol/L or 10μmoL/L can significantly in-hibit serine 473 phosphorylation in Akt and activation of NF-κB. Conclusion Dihydroartemisinin can induce apoptosis in rheumatoid arthri-tis synoviocyte through Akt signal pathway.

Antibiotics, Antineoplastic ; pharmacology ; Apoptosis ; drug effects ; Breast Neoplasms ; metabolism ; pathology ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Down-Regulation ; Doxorubicin ; pharmacology ; Female ; Humans ; Oligonucleotides, Antisense ; pharmacology ; Phosphoproteins ; metabolism ; RNA-Binding Proteins ; metabolism ; Random Allocation

Objective To investigate the useful parameters of transthoracic echocardiography (TTE) for the diagnosis of stroke subtypes in patients with acute cerebral infarction.Methods One hundred and one acute ischemic stroke patients met all of the following criteria including ≥50 years of age,normal sinus rhythm on admission,and transesophageal echocardiography (TEE) within 7 days from the onset.The clinical significance of the TEE parameters on admission was examined for identifying intracardiac thrombus formation as follows; left atrial dimension,left ventricular end-diastolic dimension,percentage fractional shortening,left ventricular mass index,ratio of the transmitral inflow velocities (E/A),and the deceleration time of the E wave.Results There were 28 patients with E/A ≥ 1.0 (70 ± 12) years old and 73 with E/A ＜ 1.0 (73 ± 10) years old.No patients showed pulmonary congestion on chest radiography.There were no significant differences in age,TTE parameters,and plasma levels of brain natriuretic peptide between the two groups.Patients with E/A≥ 1.0 had higher incidence of left atrial appendage (LAA)thrombus formation and/or spontaneous echograhic contrast than those with ＜ 1.0 (25.0％ vs 5.5％,x2 =7.95,P ＜0.01).A significant relationship was found between E/A and emptying flow velocity of the LAA (r =-0.569,P ＜0.01).Multivariate logistic regression analysis showed E/A was an independent predictor for LAA thrombus (risk ratio 1.531 per0.1 increase,95％ confidence interval 1.129-2.076,P =0.0002).Conclusions Increased level of E/A on admission was associated with the occurrence of left atrial appendage thrombus formation in patients with acute ischemic stroke.

Objective To assess the influencing factors of the progression of carotid atherosclerotic stenosis using color Doppler flow imaging (CDFI). Methods From January 2009 to December 2014, a total of data 279 consecutive patients first assessed by CDFI as moderate stenosis of carotid atherosclerosis (stenosis rate 50 -69%)and regularly reexamined with CDFI at 12,24 and 36 months after initial examination were enrolled retrospectively. The residual diameter of vascular lesions and the changes of hemodynamic parameters were documented,and they were divided into either a progression group (n = 40)or a non-progression group (n = 239,and the non-progression group was divided into steady group[n = 210]and improved group [n = 29])according to whether the degree of stenosis progressed into severe stenosis (stenosis rate 70 -99%)or occlusion. The effects of the risk factors for common cerebrovascular disease and taking lipid lowering drugs (atorvastatin 20 mg/ d)on stenosis progression were compared in patients between the 2 groups. There were significant differences in hypertension,smoking and the regular use of atorvastatin . The effects of those factors on the progression of carotid stenosis were compared further through Logistic regression analysis. Results The residual vascular diameters of stenosis at 24,and 36 months were reduced obviously in the progression group compared with those of the non-progression group. There was significant difference (all P < 0. 05),and both the stenotic sites and distal peak systolic flow velocity ratio were significantly higher than those of the steady group and improved group (all P < 0. 05). Among the risk factors for cerebrovascular disease,hypertension (OR,2. 686,95% CI 1. 120 -6. 442,P = 0. 027)and smoking (OR,2. 265,95% CI 1. 081 -4. 746,P = 0. 030)were the major risk factors for affecting the progression of carotid stenosis. Regularly taking atorvastatin was a protective factor of delaying the progression of carotid stenosis (OR,0. 383,95% CI 0. 178 -0. 827,P = 0. 015). Conclusions CDFI may objectively evaluate the progression of carotid stenosis. Smoking and hypertension are the independent risk factors for affecting the progression of carotid stenosis,and regularly taking atorvastatin contributes to delay the progression of carotid stenosis.

Objective To study the level of serum IL-10 in renal allgraft recipients with stable renal function,acute rejection,infection and chronic allgraft nephropathy(CAN),and to study the level of serum IL-10 in stable renal function recipients with different postoperative time,different dosage of CsA,different rejective frequency in order to find out the value of IL-10 in the follow-up of out-patients. Methods IL-10 were detected randomly by ELISA technique in 127 renal allgraft recipients during the follow-up,and 20 healthy volunteers were enrolled as controls.Results Level of serum IL-10 in stable renal function group was significantly higher than that in rejection group,CAN group and control group(P

Objective To observe the expression of vascular endothelial growth factor(VEGF) mRNA and protein in fluoride(F~-) treated fibroblast(FB) of mice in planar(2D) and FBs populated collagen lattice(3D) culture systems and to further explore the effects of VEGF on the osteogenic action of FB. Methods FB were divided into 0 (control group), 0.0001,0.0010,0.1000,1.0000,10.0000 and 20.0000 mg/L groups(F~-). The levels of VEGF mRNA and protein at 48 h were measured by using RT-PCR, ELISA and immunohistochemistry (IHC) methods. Results The expression of VEGF mRNA increased obviously in group of 0.1000 mg/L(1.08 ± 0.09) in 3D FB compared with the control group(0.93 ± 0.02, all P < 0.05). Fluoride increased the content of VEGF protein obviously in groups of 0.1000,1.0000,10.0000 mg/L(0.19 ± 0.02, 0.26 ± 0.01 and 0.32 ± 0.01 ), higher than that in 2D FB culture supematant in the control group(0.14 ± 0.01, all P < 0.05) ; and in groups of 0.1000, 1.0000 rag/L(0.59 ± 0.06 and 0.52 ± 0.03) it was higher than that in 3D FB culture supematant in the control group(0.37 ± 0.05, all P< 0.01 ). The IHC results showed that the VEGF positive staining cells increased significantly in group of 0.001 mg/L (0.45 ± 0.05) in 2D FB when it was compared with control group(0.36 ± 0.03, P< 0.05); and in groups of 0.0010, 0.1000, 1.0000 rag/L(0.62 ± 0.04,0.70 ± 0.06 and 0.65 ± 0.07) are it was higher than that in 3D FB control group (0.44 ± 0.04, P < 0.05 or < 0.01 ). Conclusions The higher expression of VEGF mRNA and protein in 2D and 3D FB induced by fluoride may play an important role in stimulating the osteogenesis ability in FB.

Objective To explore the effects of exercise training(ET)on the functional recovery of nerves (NFR)in rats with intracerebral hemorrhage(ICH).Methods Ninety Sprague-Dawley rats were randomly divided into an ET group,a control group and a sham operation group(SO group).An ICH model was established with colla- genase in the ET and control groups,while sodium chloride was used with the SO group.The ET group exercised for 40 min a day from 24 h to 30 d after the operation.Attitudinal reflexes,balance function and muscle strength were assessed at 24 h,3 d,7 d,14 d,21 d and 28 d after the operation.Results Compared with the control group, NFR values were increased significantly in the ET group,and there was no obvious dysfunction in the SO group. Conclusion Early ET can contribute to functional recovery after ICH.

Objective: To identify the functional domain of ?-Synuclein in affecting mitochondrial function and how the function to be impaired,especially,the mitochondrial membrane potential and the release of Cytochrome c.Methods: Harvest of ?-Syn-N and ?-Syn-△N by PCR,then subcloned into the pCMV-Myc mammalian expression vector.The recombinant plasmids were transfected into HEK293T cells by Lipofectamine 2000.After detecting the protein expression by Western blot,the functional domain was detected by co-immunoprecipitation.The mitochondrial membrane potential through flow cytometry and immunofluorescence,at the same time,the release of Cytochrome c through flow cytometry to detect.Results: The recombinant plasmids were constructed successfully.CO-IP has proved that N-terminal may be the functional domain of ?-Synuclein in affecting mitochondria.Over-expression of N-terminal could depolarize the mitochondrial membrane potential and induce the Cytochrome c releasing in MN9D cells.Conclusion: N-terminal may be the functional domain of ?-synuclein and over-expression of N-terminal could decrease mitochondrial activity.

Objective To evaluate the situation of musculoskeletal imaging research at home and abroad and the disparity and consistency between them.Methods Statistic analysis was done with the musculoskeletal articles published in those journals during the last decade,including Chinese Journal of Radiology,Journal of Clinical Radiology,Radiology,American Journal of Roentgenology(AJR)and the British Journal of Radiology(BJR).Results The development of museuloskeletal imaging research was very imbalaneed among different areas and hospitals in China.The rate of clinical research treatise and imaging technique articles at home was 76.3%(357/468)and 10.0%(47/468),respectively,while that was 75.7%(731/966)and 10.8%(105/966),respectively abroad.The rate of MR image technique articles in China was lower than that abroad.The rate of articles on basic research at home and abroad was 5.3%(25/468)and 7.9%(76/966),respectively.The rate of articles about museuloskeletal imaging simply using CT or MR at home was 20.1%(94/468)and 29.7%(139/468),respectively,while that was 5.1%(49/966)and 60.4%(548/966),respectively abroad.The rate of articles about interventional therapy and synthetic imaging at home was 9.2%(43/468)and 29.3%(137/468),respectively,while that was 4.7%(45/966)and 22.5%(217/966),respectively abroad.With regard to the diseases category,the research focused on the bone tumors and the tumor-like disease in China,while in other countries,the research focus had been diverted to the trauma of bone and joint,and the anatomy and disease of muscle and ligament,which was unsatisfactory in China.More focus had been put on imaging anatomy, cartilage disease and osteoporosis in other countries than in China.The research on the radiation dosage the subject received in the examination,the apphcation of Micro-CT and Micro-MR to musculoskeletal imaging was developed in other countries,but it had not been reported in China.Conclusion Although great success has been achieved in the research of musculoskeletal imaging in the last decade,there is still much disparity comparing with other countries,and the research is very imbalanced among different areas and hospitals in China.We should emphasize the application of MRI to musculoskeletal system and pay more attention to the basic research and imaging anatomy research,especially the research on ligament,muscle and cartilage.