Objective To study the expression regulation of GATA-3 on Th2 cytokines secretions in rats lung infected by respiratory syncytial virus (RSV).Methods 20 SD rates were random divided into two groups: Control group (10 rats) and RSV-infected group(10 rats, the model was established by RSV intravasation).The airway responses were observed after seven week.Lung tissue of SD rats were stained with HE, pathologic examinations of lung tissue- stained were made.GATA-3 expressions in lung tissue were detected by western-blots, respectively.Interleukin-4 (IL-4) and interleukin-5 (IL-5) in lung homogenate were detected by ELISA.Results Lung biopsy from RSV-infected group showed typical inflammation under light microscope.Airway resistance in RSV- infected group was higher than control group.Compared with control group( 1.231 ±0.31 ), the expression of GATA-3 significantly increased in RSV-infected group (1.743 ±0.21)( t =15.427, P ＜0.01).The levels of IL-4[(142.3 ± 12.3)ng/L] and IL-5[(167.5 ±14.2) ng/L] increased in RSV-infected group [(69.2±11.6) ng/L, ( 86.6 ± 14.3 ) ng/L] ( P＜0.01 ).There was a positive correlation between protein levels of GATA-3 and IL-4 in lung tissues (r=0.864, P＜0.01 ), and a positive correlation between GATA-3 and IL-5 in lung tissues(r=-0.756, P＜0.01).Conclusion RSV-infection may up regulate the expression of GATA-3 in lung, which contributed to inflammation of Th2 type.

Objective To study the coping strategies of patients with mood disorders and explore the corresponding nursing strategies.Methods A survey,using the coping strategies questionnaire,was conducted among 32 patients with unipolar disorder and 55 patients with bipolar disorder including 34 with current depressive episode,14 with current manic episode and 7 with mixed episode.Results As for coping strategies,no difference was found between unipolar depression and bipolar disorder with current depressive episode or mixed episode(P>0.05);while significant difference was found between bipolar depression and bipolar mania on problem solving(t=-2.869,P=0.006),help seeking(t=-2.443,P=0.018),self accusation(t=2.461,P=0.018)and withdrawing(t=2.870,P=0.006).The patients with unipolar disorder,bipolar depressive or mixed episode tended to use mixed coping strategies,with the percentages of 50.00%,41.18%and 42.86%respectively and 64.29%of the patients with bipolar mania tended to use mature coping strategies.Conclusions Coping strategies of patients with mood disorder are associated with the status of the diseases but independent of the categories of the diseases.Therefore,the corresponding nursing strategies include setting aside the problems,encouraging family member to make decisions and conducting active guidance.

Objective To study the effects of electrical stimulation of efferent vagus nerve on the endotoxic shock in rabbits. Method Sixteen Newzealand rabbits were randomly divided into 2 groups, namely group S as the stimulation group and group C as the control group). Rabbits were subjected to bilateral cervical vagotomy and had challenge with intravenous injection of lipopolysaccharide (LPS) (E. COLI O111: B4 , DIFCO, USA) in a dose of 600 μg/kg. The distal end of the left vagus nerve trunk was connected to an electric stimulator with bipolar electrode and controlled by an acquisition system. Stimuli with stable voltage (10 V,5 Hz,5 ms) were applied twice to the nerve for 10 minutes just before and after the administration of LPS in group S. At the time before and after the infusion of LPS 30 min,60 min, 120 min, 180 min,240 min and 300 min respectively, the heart rate(HR)and the mean arterial blood pressure (MABP) in each animal were recorded, and blood samples were taken for measuring serum tumor necrosis factor-αa(TNF-α) and interleukin-10 (IL-10). Results Compared with group C,the electrical stimulation of efferent vagus nerve could significantly attenuated the LPS-induced hypotension and de-creased the contents of TNF-α[(38.12±7.85) pg/mL vs. (55.12±7.89) pg/mL, P <0.01], but increased the contents of IL-10[(55.12±9.37)pg/mL vs. (40.15±5.44) pg/mL, P <0.01]afar LPS challenge. Conclusions The stimulation of the efferent vagus nerve can down-regulate systemic TNF-α, production and attenu-ate the development of shock after LPS challenge.

Objective To investigate the effects of penehyclidine hydrochloride combined with ulinastatin on postoperative cognitive function in the patients undergoing thoracic surgery.Methods One hundred and twenty patients undergoing lung cancer thoracotomic radical resection were randomly divided into hydrochloride penehyclidine composite ulinastatin group(HU group),hydrochloride penehyclidine group(H group),ulinastatin group(U group)and control group(C group).The arterial blood was collected for detecting OI,TNF-α,IL-6 and IL-8.The serum levels of S-100β and NSE were detected.The MMSE scores were evaluated.Results Compared with the H group and U group,the levels of TNF-α at T3-4 in the HU group were decreased,and the levels of IL-6 and IL-8 at T2-4 were decreased,while OI was increased(P＜0.05).Compared with the H group and U group,the serum levels of S-100β and NSE at T5-8 in the HU group were decreased(P＜0.05);compared with the H group and U group,the MMSE scores at T6-7 in the HU group were increased(P＜0.05).Conclusion Penehyclidine hydrochloride combined with ulinastatin could reduce the inflammation reaction during one lung ventilation in thoractomy and improves the postoperative cognitive function.

AIM: To purify and refold the inclusion body of a human anti-HBsAg scFv with a 6?His tag, and to determine the affinity constant of the purified recombinant product.METHODS: Solubilizing in buffers containing urea or guanidine hydrochloride (GuHCl), the inclusion body was purified by IMAC, and then refolded by dialysis against urea or GuHCl, at the same time, Ni 2+ charged chelate column was utilized for in situ refolding. The affinity constant of the refolded scFv, polished by immune-affinity chromatography, was determined by non-competitive ELISA. RESULTS: The refolded scFv with highest specific bioactivity was produced by dialysis against GuHCl. Under this condition, the recovery of target protein reached (61.08?1 45)%. The affinity constant of the polished scFv was confirmed to be(2.30?0.32) ?10 7 L/mol. CONCLUSION: The inclusion body studied in this paper can be refolded efficiently under optimal dialysis condition in vitro . The antigen-binding property of this recombinant scFv is not affected by the purification tag fused to the N terminal of the protein.

Objective:To evaluate the cytotoxicity of different dental bonding agents to human dental pulp cells. Methods:Four dental bonding agents(Prime & Bond NT,Single Bond,Xeno Ⅲ and iBond) were diluted with the culture medium by a ratio of 1∶1 000,1∶2 000 and 1∶4 000(v/v), and the fourth passage of dental pulp cells were then exposed to agent dilutions for 12, 24 and 48 h respectively, then the morphological changes of pulp cells were observed with microscopy and cytotoxicity was analyzed with modified 3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyl-tetrazolium bromide (MTT) assay.Results:There was significant influence of the type of dental bonding agents,exposure time and concentration on the cell morphology. Total-etch system was more toxic than self-etch system.Conclusion:Dental bonding agents are toxic to pulp cells,Single Bond is the strongest cytotoxic agent among the 4 adhesive agents.

Mitral regurgitation is one of the most serious heart diseases. With the development of up-to-date medical techniques, the ratio of successful operations in valvular repair and valvular replacement has been largely improved. Examinations before operation become extremely crucial. Accurate method is required in assessing the degree of mitral regurgitation to set down the corresponding treatment method. This paper reviews the evaluation methods of mitral valvular regurgitation provided in these years and presents comments on the application areas as well as the merits and disadvantages of those methods. Finally, the prospect of the method based on three-dimensional Doppler ultrasonographic imaging on mitral regurgitation is discussed.
Echocardiography, Doppler, Color ; Echocardiography, Three-Dimensional ; Humans ; Image Processing, Computer-Assisted ; Mitral Valve Insufficiency ; diagnostic imaging

Objective:To evaluate the efficacy,recurrent risk factors and transferable ratio of treatments with 3 different regiments on children with systematic myasthenia gravis (MG).Methods:The data of 104 children with ocular MG from June 2010 to March 2014 were collected from Department of Pediatric Neurology of Xiangya Hospital and they were retrospectively studied.The patients were divided into 3 groups:a methylprednisolone group (n=44),a prednisone group (n=48) and a bromine pyridostigmine group (n=12).Evaluative system from American MG foundation was used to evaluate the efficacy of treatment and the ratio of ocular MG transformed into systematic MG.Results:The efficacy in the methylprednisolone group was better than that in the prednisone group,and both of them were better than that in the bromine pyridostigmine group (both P＜0.05).Methylprednisolone,prednisone combined with bromine pyridostigmine could reach a better long-term efficacy in children with ocular MG.Early treatment with glucocorticoid could reduce clinical relapse.Conclusion:A treatment with high-dose methylprednisolone pulse can improve early clinical remission in children with ocular MG.However,there is a similar efficacy in the long run of different glucocorticoid therapeutic regiments.A relatively order onset age,infection and thyroid dysfunction are recurrent risk factors in children with ocular MG.

Gitelman syndrome is a rare disease.It is easy to be misdiagnosed and missed diagnosis due to the diverse clinical symptoms.A girl with long-term hypokalemia,who presented with intermittent pain of lower limb muscle and physical retardation,was treated in Xiangya Hospital,Central South University.Laboratory examination confirmed the severe hypokalemia and metabolic alkalosis.Gene sequencing indicated SLC12A3 gene mutation and the patient was finally diagnosed as Gitelman syndrome.Patients with chronic hypokalemia and metabolic alkalosis need to conduct gene sequencing to confirm the diagnosis.Gene therapy is expected to be the most effective treatment for this disease.

Pericytes are a kind of microvascular parietal cells, which constitute neurovascular units together with neurons, astrocytes, microglia, vascular endothelial cells and vascular smooth muscle cells to maintain the basic function of the brain. Pericyte dysfunction can lead to cerebral microcirculation dysfunction, which is related to the occurrence and development of a variety of nervous system diseases. This article reviews the characteristics, identification and subtypes of pericytes, their relations with cerebral microcirculation, and their correlation with central nervous system diseases.