ObjectiveTo study the effect of allo-human bone marrow mesenchymal stemcells (bMSCs) on the secretion of interleukin(IL)-1, tumor necrosis factor(TNF)-α and transforming grouth factor (TGF)-β of patients with rheumatoid arthritis (RA) in vitro. MethodsBMSCs were isolated from bone marrow of healthy volunteers and purified by density gradient centrifugation and cultured in vitro. The mononuclear cells from the peripheral blood of patients with RA and healthy controls were isolated respectively.bMSCs and mononuclear cells were co-cultured in vitro and the density of IL-1, TNF-α and TGF-β3 in the co-culture system were detected by ELISA. ANOVA and Pearson correlation were used for statistical analysis.ResultsMononuclear cells from peripheral blood of patients with RA were co-cultured with bMSCs for seven days. There were an decreased density ofIL-1[(38.4±0.5) vs(6.2±1.0) ng/L], TNF-α[(29.4±1.3) vs (4.6±1.2) ng/L]and an increased density of TGF-β[(2.6±1.0) vs (22.5±2.2) ng/L]in the co-culture system (P＜0.05). But on the other hand, for healthy volunteers there were no significant change in the density of IL1[(4.4±1.1) ng/L]and TNF-α[(5.0±1.7) ng/L]in the coculture group, as compared with the mononuclear cell group[(4.4±1.3) vs(5.3±1.7) ng/L](P＞0.05). There was an increased density of TGF-β in the coculture system[(4.8±1.4) vs(10.5±1.2) ng/L](P＜0.05). IL-1 was positively correlated to TNF-αt (r=0.896,P=0.000), TNF-β1 was nagative correlation with 1L-1 and TNF-α (r=-0.356,P=0.019; r=-0.380,P=0.000).ConclusionHuman bone marrow MSCs have modulatory effects on main cytokines of patients with RA in vitro. bMSCs could down-regulate the levels of IL-1 and TNF, but up-regulate the density of TGF-β. These immune-modulatory effects are not MHC restricted. The results of this study have provided evidence for the development of effective therapy for RA.

BACKGROUND:Transient receptor potential channel C6 (TRPC6) is a new and important slit diaphragm-associated protein in podocytes involved in regulating glomerular filter function. Glomerular TRPC6 expression is closely associated with proteinuria in diabetic kidney disease. OBJECTIVE: To investigate the expression of canonical TRPC6 in mouse podocytes induced by high glucose, and to explore the possible mechanism of diabetic kidney disease. METHODS:Mouse podocyte cels were cultured and divided into normal glucose group (5.6 mmol/L D-glucose), normal control group (5.6 mmol/L D-glucose+25 mmol/L mannitol) and experimental groups which were in the environment of high glucose (30 mmol/L). The experimental groups included high glucose group, valsartan treatment groups (10-5 mol/L) and U73122 control group (10μmol/L U73122). After 48 hours, the expressions of mRNA and proteins of TRPC6, nephrin and angiotensin II (AngII) were detected respectively by real-time quantitative PCR and western blot analysis. RESULTS AND CONCLUSION:Compared with the normal control group, the expressions of mRNA and proteins of TRPC6 and angiotensin II were markedly elevated in the high glucose group (P < 0.01), while the expressions of mRNA and proteins of nephrin were decreased (P < 0.01). The mRNA and proteins of TRPC6 and angiotensin II expressions were significantly down-regulated by valsartan (P < 0.05,P < 0.01), while the mRNA and protein expressions of nephrin were effectively up-regulated (P < 0.05). Compared with the high glucose group, the expressions of mRNA and proteins of TRPC6 and angiotensin II were ameliorated in the U73122 control group. The expressions of mRNA and proteins of TRPC6, nephrin and angiotensin II had no statistical significance between the normal control group and normal glucose group (P > 0.05). Angiotensin II-TRPC6 signaling pathway may mediate high glucose-induced podocyte injury, meanwhile it provides a new theoretical basis for the treatment of diabetic kidney disease, by which the angiotensin receptor blockers can protect podocytes in diabetic kidney disease.

Objective: To analyze the relationship between high-sensitivity C-reactive protein (hs-CRP) and P wave dispersion (Pd) in patients with lone atrial ifbrillation (AF), and to explore the effect of inlfammation on atrial electrophysiological remodeling.
Methods: Our research included 2 groups. AF group, containing 71 consecutive paroxysmal lone AF patients, and Control group, containing 71 paroxysmal supra ventricular tachycardia patients with the matched age and gender. The clinical characteristics, electrocardiographic Pd assessment and plasma hs-CRP levels were compared between 2 groups. The relationship between hs-CRP and Pd was studied by linear and multi linear regression analysis.
Results: Compared with Control group, AF group showed increased left atrial diameter, Pd and hs-CRP, all P<0.05. multilinear regression analysis indicated that hs-CRP was positively related to Pd in both groups, P<0.01. Multiple logistic regression analysis revealed that hs-CRP was an independent risk factor for AF occurrence (HR=15.430, 95%CI 6.031-39.476, P<0.001), with adjusted Pd, multiple logistic regression analysis presented that both Pd and hs-CRP were the independent risk factors for AF occurrence, both P<0.001, while the HR for hs-CRP predicting AF occurrence was attenuated from 15.430 to 6.246.
Conclusion: Plasma hs-CRP level and electrocardiographic Pd were the important risk factors for paroxysmal lone AF, the interaction between hs-CRP and AF occurrence could be mediated by Pd, suggesting that inlfammation might be involved in atrial electrophysiological remodeling.

Objective To explore the impact of pre-setted generation adaptive statistical iterative reconstruction Veo (ASiR-V) on chest CT radiation dose and image quality.Methods The chest model and 120 patients (divided into 6 groups,each n=20) were scanned by GE Revolution CT under the condition of pre-setted ASiR-V weights for 0,20％,40％,60％,80％ and 100％ respectively.The tube voltage was 120 kV,the tube current was automated mAs (Smart mA10-500) technology,the noise index was 11.The dose-length product of each chest model group and patients group were record,the effective dose (ED) of each group was calculated and compared.The image quality among groups through combining the objective CT and standard deviation (SD) values of different organizations (lung tissue,the soft tissue near by spine,the aorta and vertebral body) in chest model and the image subjective rating of patients were compared,and the subjective score of patients' images was also compared among groups.Results With the increase of pre-setted ASiR-V,the ED of chest model and patients reduced as a logarithmic fitting,there are no obvious changes of the CT value and image noise SD value of different organizations in model.The subjective score of mediastinal and pulmonary window was begin to decline at 40％ weighted ASiR-V.The subjective score of mediastinal and pulmonary window descend obviously at 60％ weighted ASiR-V compare to 40％ (P＜0.05).ED of pre-setted 40％ weighted ASiR-V reduced to 57.21％ compared to that of 0 weighted ASiR-V.Conclusion The pre-setted ASiR-V can reduce the radiation dose,and does not affect the objective image quality at the same time.The pre-setted 40 ％ weighted ASiR-V has the highest clinical application value due to the radiation dose can be obviously reduced with ensuring the image quality,which can meet the demand of diagnosis.

Objective: To study the safety and efifcacy of hematoma aspiration with manual compression for treating the patients of femoral pseudoaneurysm after cardiac catheterization under ultrasound guidance. Methods: A total of 27 patients suffering from post-catheterization iatrogenic femoral pseudoaneurysm were analyzed including 14 male and 13 female at the mean age of (53.5±11.4) years. The body, neck and blood supply area of pseudoaneurysm were located by ultrasonography; 18 gauge needle was punctured into the center of pseudoaneurysm to aspirate blood, meanwhile the neck and body of pseudoaneurysm were manually compressed to block blood supply for relevant artery under ultrasound guidance. Manual compression was conducted for 15 min followed by bandage compression; the patients were lie on the back and kept lower extremity straight for 12 hours. Ultrasonography was performed at 24 hours and 1 month after the operation in all patients respectively. Results: There were 24/27 (88.9%) patients having successful aspiration with manual compression at ifrst time; 2 (7.4%) having incomplete occlusion at ifrst time and the success was obtained by second time; 1 having incomplete occlusion due to coexisted femoral arteriovenous ifstula, while the body of pseudoaneurysm was obviously decreased. The overall success rate was 96.3% (26/27), no procedural complication occurred. Conclusion Ultrasonography guided hematoma aspiration with manual compression has been safe and effective for treating the patients of iatrogenic femoral pseudoaneurysm.

Objective To explore the changes of corticotropin releasing factor (CRF) levels secreted by hypothalamus neuron in children with acute brain injury. Methods Fifty-one intracranial-infection children with brain injury and 11 intracranial-noninfection children with brain injury were chosen from pediatric intensive care unit of our hospital. Severities of their brain damage were evaluated by Glasgow score,and CRF level in cerebrospinal fluid (CSF) and serum TNF-α and IL-6 levels were measured by radioimmunoassay. Results There was no significant difference of Glasgow scores between the intracranial infection group and intracranial-noninfection group ( P = 0. 302 6 ), CSF CRF level of intracranial infection group was significantly lower than that of intracranial-noninfection group ( P ＜ 0. 01 ), serum TNF-α and IL-6 levels of intracranial infection group were significantly higher than those of intracranial-noninfection group ( P ＜ 0. 01,P ＜0. 001 ). As comparing to the children with Glasgow score of 6 ～ 7, the levels of CSF CRF and serum TNF-α and IL-6 in children with Glasgow score of 4 ～ 5 were significantly increased ( P ＜ 0. 05, P ＜ 0. 001 ).Conclusion CSF CRF level of the children with acute brain injury is changing, which may be concerned with the secretion of hypothalamus CRF neuron stimulated by TNF-α, IL-6 and hypoxia stress in children with brain injury.

Objective To explore the lymph nodes (LN) metastasis characters of the endometrial carcinoma and its relation with the patients' prognosis. Methods A retrospective study was carried out on 227 cases of endometrial carcinoma who admitted to our department and underwent LN excision from Jul. 2000 to Feb. 2008. Results Among 227 cases who underwent pelvic LN excision, there were 22 cases (9.7%) presented LN metastasis. There were 12 cases with positive external iliac LN from 20 cases of patients with data in LN grouping. Para-aortic LN excision was carried out on 138 patients. There were 6 cases with positive para-aortic LN, 5 cases of them together with pelvic LN metastasis. Those patients with cervix involvement, annex metastasis, deep myometrium infiltration, grade 2-3 and negative estrogen receptor occurred pelvic LN metastasis more frequently than the others ( P ＜ 0. 05 ). Among the 6 cases with positive para-aortic LN, there were 3 cases ( 3/6) with deep myometrium infiltration. For those whose paraaortic LN was negative, it was only 16. 7% (22 cases). But there were no difference statistically between them ( P＞ 0. 05 ). There were significant difference in 3 years disease-free survival rate between patients with positive pelvic LN or negative pelvic LN [(81. 8 ± 8. 2)% vs ( 97. 4 ± 1. 2 ) % , P = 0. 004]. While there were not significant difference in 3 years disease-free survival rate between patients with positive para-aortic LN or negative para-aortic LN [100% vs ( 96. 7 ± 1. 6) % , P ＞ 0. 05]. Single factor analysis showed that the age more than 50 years, annex metastasis and pelvic LN metastasis related with the recurrence (P ＜0. 01). But cervix involvement, deep myometrium infiltration, para-aortic LN metastasis, pathology type, tumor grade and estrogen receptor did not relate with the recurrence ( P ＞ 0. 05 ). Cox regression analysis showed that annex metastasis and the age of patients were independent risk factors affecting the recurrence ( P = 0. 011, P = 0. 025 ). Conclusions The most common site of pelvic LN metastasis is the external iliac LN for endometrial carcinoma patients. The patients with positive para-aortic LN always accompanied pelvic LN metastasis. Those patients with cervical involvement, annex metastasis, deep myometrium infiltration, poor differentiation and negative estrogen receptor be more likely exist pelvic LN metastasis. Pelvic LN metastasis may affect the prognosis of endometrial carcinoma patients.

Objective: To explore the safety and efficacy of left atrial (LA) endocardial vagal denervation catheter ablation for treating the patients with refractory vasovagal syncope (VVS).
Methods: A total of 57 consecutive refractory VVS patients with severe symptom and positive response to head-up tilt test (HUT) were enrolled. There were 22 male at the mean age of (43 ± 13) years. The patients had no response or couldn’t tolerate routine treatment. LA model was re-established by three-dimensional mapping system, 10 patients received high-frequency stimulation technique for ganglionated plexi (GP) ablation and 47 received regional catheter ablation at 5 anatomic sites of GP for LA endocardial vagal denervation treatment. In-operative vagal response including hypotension, sinus bradycardia or asystole were observed, the endpoint of ablation was abolition of evoked vagal relfexes. Periodical follow-up was conducted to record the syncope recurrence and to re-examine ECG and HUT in all patients.
Results: There were 52/57(91.2%) patients had positive vagal response by radiofrequency application and reached the endpoint of ablation; 4 patients couldn’t receive obvious evoked vagal relfexes. During (36 ± 22) months follow-up period, there were 52 (91.2%) cases without syncope recurrence, 11 cases still having palpitation, amaurosis and dizziness as the precursors of syncope while the symptoms were much better then they were before. No complication occurred.
Conclusion: LA endocardial vagal denervation catheter ablation is a safe and effective method for treating the patients with refractory VVS, it may also effectively prevent VVS recurrence.

Background One of the major challenges in arrhythmogenic right ventricular cardiomyopathy (ARVC) ablation is ventricular tachy-cardia (VT) non-inducibility. The study aimed to assess whether fast rate (≥ 250 beats/min) right ventricular burst stimulation was useful for VT induction in patients with ARVC.Methods Ninety-one consecutive ARVC patients with clinical sustained VT that underwent electro-physiological study were enrolled. The stimulation protocol was implemented at both right ventricular apex and outflow tract as follows: Step A, up to double extra-stimuli; Step B, incremental stimulation with low rate (< 250 beats/min); Step C, burst stimulation with fast rate (≥ 250 beats/min); Step D, repeated all steps above with intravenous infusion of isoproterenol.Results A total of 76 patients had inducible VT (83.5%), among which 49 were induced by Step C, 15 were induced by Step B, 8 and 4 by Step A and D, respectively. Clinical VTs were induced in 60 patients (65.9%). Only two spontaneously ceased ventricular fibrillations were induced by Step C. Multivariate analysis showed that a narrower baseline QRS duration under sinus rhythm was independently associated with VT non-inducibility (OR: 1.1; 95% CI: 1.0–1.1;P = 0.019).ConclusionFast rate (≥ 250 beats/min) right ventricular burst stimulation provides a useful supplemental method for VT induction in ARVC patients.

To explore the safety and efficacy of left atrial appendage (LAA) occlusion under the guidance of local anesthesia and modified transseptal puncture technology by coronary sinus assisted positioning in patients with nonvavular atrial fibrillation (NVAF). Methods: A total of 16 NVAF patients received local anesthesia and percutaneous LAmbre or Amplatzer cardiac plug occluder implantation. There were 12 males and the patients mean age was at (71.0±6.0) years with CHA2DS2-VASc score at (4.1±1.5); all patients had walfarin contradiction or with walfarin related side effect. Transseptal puncture was conducted by coronary sinus catheter as the anatomic location marker. Results: All 16 patients finished transseptal puncture and no relevant complication occurred. 15/16 (93.8%) patients had successful LAA occlusion, 1 patient was abandoned because of LAA anatomic structure variation. The mean operative time was (65.0±23.0) min and the mean X-ray exposure time was (12.0±3.0) min. The mean diameter of occluder was (32.5±6.0)mm. Conclusion: LAA occlusion was safe and effective with local anesthesia and modified transseptal puncture technology by coronary sinus assisted positioning in relevant patients.