Rheumatoid arthritis (RA) is a common systemic autoimmune disease characterized by chronic inflammation of joints,bone and cartilage erosion,synovial hyperplasia,and the pathogenesis of RA is not clear.γδT cells are a new kind of phenotype and function T lymphocyte subsets,which mainly distribute in the mucosal and epithelial tissue and account for 1％-10％ of the total T cells in the peripheral blood,and bridge innate and adaptive immunity.γδT cells play an important role in the pathogenesis of RA by the functions of antigen-presenting capacity,secretion of proinflammatory cytokines,immunomodulatory effects,and auxiliary function for B cells.

Objective To examine the academic emotions and its relationship with academic self-efficacy among secondary special school students. Methods 352 secondary special school students were collected as the subjects.All subjects were tested with academic emotions questionnaire and academic self-efficacy questionnaire and analyzed the result of the test by multivariate analysis of variance,correlation analysis and linear regression analysis. Results Scores on enjoyment,anxiety,anger,depression,total scores on positive-high arousal academic emotions and negative-high arousal academic emotions of secondary special school girls(27.88±3.84,24.77±5.03,18.03±3.37,18.14±3.65,59.33±7.98,57.48±10.49,respectively)were higher than those of boys(26.41±4.55,22.38±5.71,17.01±3.91,16.07±3.94,57.46±9.20,53.45±11.76,respectively),(P<0.05).The academic emotions' differences among different grades of secondary special school students were not significant(F-(1,348)=1.275,P=0.226).The interaction of gender and grade on academic emotions was not significant(F-(1,348)=1.057,P=0.397).Academic emotions and academic self-efficacy was interrelated(r=-0.513～0.685).The result of multiple regression analysis showed that each factor of academic self-efficacy played a significant predictor role on academic emotions(β=-0.631～0.462,P<0.01). Conclusion The academic emotions' differences between secondary special school boys and girls are significant. Academic self-efficacy is closely related to academic emotions.

Objective: To investigate the changes of serum high-sensitivity C-reactive protein(hs-CRP) and plasma D-dimer levels and their relationship with the volume of cerebral infarc-tion in patients with acute cerebral infarction. Methods: The levels of serum hs-CRP and plasma D-dimer in the cerebral infarction group were significantly higher than those in the control group (P ＜0.05); as compared with the patients with moderate infarction (5-10 cm3) and small infarction (≤ 5 cm3), the levels of serum hs-CRP and plasma D-dimer in patients with large cerebral infarction (≥ 10 cm3 ) increased significantly (P ＜ 0.05). Conclusions: Measuring the levels of serum hs-CRP and plasma D-dimer may contribute to the early diagnosis of cerebral infarction and the prediction of the volume of cerebral infarction.

Objective To compare the different effects of endurance and exhaustive exercises on hepcidin in the blood and liver,and determine the changes of related indexes about iron metabolism and hypoxia response,and of inflammatory and antimicrobial activity factors.Methods Thiry female Sprague Dawley rats were randomly divided into a control group (n=10),an endurance exercise group (n=10) and an exhaustive exercise group (n=10).Then 4 weeks of endurance and exhaustive treadmill training were given to different exercise groups respectively.Blood samples were collected,the routine indexes of the whole blood,and the serum indexes about iron metabolism,hypoxia response,inflammatory and antimicrobial activity factors were measured.Meanwhile,liver samples were fixed,embedded and sliced,and the expression of hepcidin,hypoxia-inducible factor (HIF)-1α and nuclear factor of kappa b (NF-κB) of different groups were measured using the immunochemistry staining.Results Compared with the control group,after 4-week endurance exercises,there was significant increase in the concentration of erythropoietin (EPO),but significant differences in the level of serum hepcidin and interleukin 6 (IL-6).However,after 4 weeks of exhaustive exercise,significant increase was observed in the level of hepcidin and the expression of HIF-1α in the serum and liver,as well as the serum interleukin 1 (IL-1),IL-6,tumor necrosis factor-α and C reactive protein,but significant decrease was found in the concentration of serum EPO and the level of serum TF and sTFR compared to the control group.Moreover,there was significant increase in the level of toll-like receptor 4 and NF-κB,which is correlated with the antimicrobial peptide activity of hepcidin compared between the exhaustive and control group.Conclusions Four-week endurance exercise down-regulates the level of serum hepcidin,while 4-week exhaustive exercise increases the hepcidin level in the serum and liver significantly.Therefore,different exercises can result in totally different effect on the hepcidin level.

AIM: To study the mechanism of effects about total flavones of choeropondias axillaris (TFC) to heart. METHODS: The effects of TFC on contractility were investigated through acting on the guinea pig right ventricle papillary muscles. RESULTS: TFC decreased both the contractility and contraction rate of papillary muscles. The quantity-effect curve of CaCl2 was shifted to right after giving TFC. TFC 30.4 μmol·L-1 prolonged remarkably the functional refractory period (FRP) of guinea pig right ventricle papillary muscles, but exerted no effect on excitability. CONCLUSION: TFC can inhibit the Ca2+ influx into cell in a concentration-dependent manner.

Objective To study the relationship between the irritable bowel syndrome and bacterial overgrowth in the intestines.Methods Forty-nine cases of irritable bowel syndrome presenting as diarrhea or constipation were tested by the lactose-functose hydrogen breath test to determine the oral-cecal passage time and positive rate was noted.Of the cases with positive tests ten were selected for treatment with prepulsid for one week,and the pre-and post-treatment passage times were compared.Results In regard to passage time both diarrhea and constipation types of the irritable bowel syndrome showed prolongation compared with controls(P0 05),and improvement after treatment compared with pre-treatment,diarrhea was also improved by treatment.Conclusion Intestinal dysfunction can lead to bacterial overgrowth in the intestines,which can be a cause of the irritable bowel syndrome.

10% to 15% of patients with ischemic stroke may have hemorrhagic transformation.Its treatment is more complex,mainly includes blood pressure management,reversing coagulopathy,and treatment of complications (including increased intracranial pressure).The current research is mainly to find the therapeutic regimen of hemorrhagic transformation after anticoagulation and thrombolytic therapy in order to improve the prognosis in patients with stroke.

Objective:To improve the recognition of bleeding risk in the anticoagulant process by analyzing one case of senior patient with deep vein thrombosis occurred severe bleeding during the anticoagulant therapy.Methods:The possible causes of hemorrhage were analyzed after the brief introduction of medical history,lab test report and treatment process of the patient.Results:The reasons of hemorrhage might be as follows:① the combination of warfarin and dalteparin induced the adverse drug reaction;② albumin decreased during the treatment process resulting in the effect enhancement of warfarin;③ the clearance of warfarin decreased resulting from the low creatinine clearance of the elderly patient.Conclusion:Clinical anticoagulant practice should be more careful in senior patients.The frequency of related laboratory tests should be increased in order to find potential risks timely.

Objective To investigate the effects of propofol on activation of NF-κB in polymorphonuclear neutrophils (PMNs) in rats with LPS-induced acute lung injury (ALI). Methods Sixty healthy SD rats of both sexes, aged 3 months, weighing 250-350 g, were randomly divided into 5 groups (n = 12 each):control group (group C), ALI group and 3 different dose of propofol groups (group P1, P2, P3). The animals were anesthetized with intraperitaneal 3% pentobarbital sodium 40 mg/kg. LPS 5 mg/kg was injected via femoral vein in group ALI.Propofol 5, 10 and 15 mg· kg- 1· h- 1 was infused intravenously over 2 h immeliately after injection of LPS 5 ng/kg through femoral vein in group P1, P2 and P3 respectivey. In group C normal saline 10 ml was injected via femoral vein instead. All rats were killed by exsanguination at the end of infusion of propofol. The right lung was removed for microscopic examination. The morphologic changes were scored 0-3 (0 = normal, 3 = severe morphologic changes). Blood samples were collected from carotid artery for determination of the expression of total NF-κB and activated NF-κB in PMNs by Western blot. Results Compared with group C, morphologic change scores and activated NF-κB expression in PMNs were significantly increased in group ALI, P1 and P2, and morphologic change scores increased in group P3. Morphologic change scores in group P1 and P2 and activated NF-κB expression in PMNs in group P1, P2 and P3 were significantly decreased compared with those in group ALl. Morphologic change scores and activated NF-κB expression in PMNs were decreased gradually in group P1, P2 and P3 . There was no significant difference in total NF-κB expression in PMNs among all groups. Conclusion Propofol can attenuate ALI induced by LPS through inhibition of the activation of NF-κB in PMNs in rats.

Objective: To compare the effecte of removing plaque by two toothbrushing methods. Methods: Forty subjects were chosen to take part in the randomized、examiner-blind、crossover study. Results: Modified Bass method has better effect of removing plaque, especially that at the central margin than Vertical method(P