The clinical application of helical CT scanning combined with the technology of iDose 4 in the pulmonary nodules / 实用放射学杂志

Objective To investigate the value on clinical application of helical CT scanning combined with the technology of iDose4 in the pulmonary nodules.Methods 90 cases with pulmonary nodules underwent CT examination including the regular dose and low dose.The regular dose was performed with following parameters:tube voltage 120 kV,effective tube current of 150 mAs.The low dose was performed with following parameters:tube voltage 120 kV,effective tube current of 30 mAs.The other scanning requirements were as same as the regular dose.The volume CT dose index(CTDIvol)and dose-length product(DLP)were recorded.The all images were reconstructed by the technology of iDose4 of Level 1-7.Two radiologists blinded to the scan conditions independently reviewed all data sets for image quality.The number and the morphological features including the location,size,margin,lobulation sign were recorded.The clinical application effect were assessed.Results 108 pulmonary nodules were revealed in 90 cases with the regular dose.101 pulmonary nodules were revealed in 90 cases with the low dose.No statistical significance differences were seen between the regular dose and the low dose(P>0.05).No statistical significance differences were seen in the morphological features between the regular dose and the low dose(P>0.05).The radiation dose of the low dose reduced 75.8% with the regular dose,the difference was statistically(P<0.003).Conclusion There is no obvious differences between the regular dose and the low dose of helical CT scanning combined with the technology of iDose4 in the pulmonary nodules.The low dose of helical CT scanning combined with the technology of iDose4 can reduce the radiation dose.

Clinical observation of enteral nutrition support in patients with acute exacerbation of chronic obstructive pulmonary disease / 肠外与肠内营养

Objective:To investigate the clinical effect of enteral nutrition (EN) on patients with acute exacerbation of chronic obstructive pulmonary disease (COPD).Methods:96 cases of acute exacerbation of COPD patients admitted to our hospital from January 2015 to December 2016 were randomly divided into observation group (48 cases) and control group (normal diet,48 cases).The patients in two groups were given anti-infection and other symptomatic treatments equally.The serum protein levels and pulmonary function in the two groups were compared after 2 weeks.Furthermore,antibiotic use durations,hospitalization days and the re-admission rates within 3 months were observed and compared between two groups.Results:The serum albumin and pre-albumin levels,FEV1 and FEV1/FVC in the observation group were significantly elevated in comparison with those in the control group.And the antibiotic use durations,hospitalization days and the re-admission rates within 3 months remarkably decreased in the observation group (P ＜ 0.05).Conclusion:Enteral nutrition could improve the nutritional status and pulmonary function in patients with acute exacerbation of COPD,shortening the length of hospital stay and the durations of antibiotic use and reducing the rates of re-admission.Enteral nutrition may be worth applying widely in clinical COPD patients in future.

HbA1c is positively associated with pulse wave velocity and Flow-mediated dilation in the patients with type 2 diabetes / 中国综合临床

Objective To investigate the association between HbA1c status,arterial stiffness and endothelial function in subjects with type 2 diabetes mellitus(DM).Methods The study group consisted of 338 DM patients,including 74 subjects with normal HbA1c(≤ 6.0％)(Group A),102 subjects with mildly increased HbA1c(HbA1C increased by less than 6.5％)(Group B)and 162 patients with high HbA1c level (HbA1c increased by more than 6.5％)(Group C).All patients were evaluated for glucose,HbA1c,TC and TG.Pulse wave velocity(PWV)and flow-mediated dialation(FMD)were performed simultaneously.Results Compared with Group A,Group B and C had higher baPWV([1734 ± 343]cm/s vs.[1537 ± 313]cm/s and [1853 ± 364]cm/s vs.[1537 ± 313]cm/s).Patients in Group C had a higher baPWV than those in Group B ([1853 ± 364]cm/s vs.[1734 ± 343]cm/s,P =0.006).The patients in group A had a lower level of FMD than that of group B and C([4.20±3.13]％ vs[5.29±3.92]％,[4.09±2.79]％ vs.[5.29±3.92]％,P＜0.01).Leaner association analysis showed a positive correlation between baPWV and HbAlc(r =0.53,P ＜0.01).baPWV was negatively correlated with FMD(r =-0.25,P ＜0.01).Logistic regression analysis showed that HbA1c(OR32.19％,CI 11.26 ～53.12,P＜0.001),age(OR 14.21,95％ CI 11.43 ～ 17.00,P＜0.001),systolic blood pressure(OR 7.36,95％ CI 6.12-8.59)and TC(OR:0.31,95％ CI:9.97-70.64)were independent predictors for the increased arterial stiffness(baPWV).Conclusion Arterial stiffness parameters varied significantly across subgroups of patients with different levels of HbA1c and the arterial stiffness was positively associated with deranged glucose homeostasis.

The protective effects of histone deacetylases inhibitor TSA on the mice model of rheumatoid arthritis / 中华微生物学和免疫学杂志

Objective To investigate the effects of trichostatin A(TSA)on the mice model of collagen induced arthritis(CIA).Methods Mice model of rheumatoid arthritis(RA)was induced in DBA/1 mice with type Ⅱ collagen.Paws were scored for histological severity of arthritis.The severity of inflammation of mouse joint was evaluated by histological examination.Real-time PGR was used to determine the cytokine mRNA expression.Cytokine production was measured by ELISA from serum,spleen cell culture or dendritic cell and T cell co-culture supematant.T cell proliferation was examined by MTT method.Results TSA can significantly suppress the severity of the arthritis in CIA.IFN-γ was elevated in CIA mice,but was inhibited significantly by TSA introduced either at the same time with immunization or at the onset of manifestation of arthritis.Collagen specific T cell proliferation was significantly suppressed by introduction of TSA.Increased level of IL-4 by T cells was observed in TSA treated group compared to that of control group.Conclusion IL-4 level was increased and played a critical role in the protective effects of TSA in CIA.TSA suppresses the progress of CIA by regulates the balance of Th1/Th2 differentiation.

The role of protein kinase C to LPS-induced β-1,4-galactosyltransferase- Ⅰ expression in endothelial cells / 中华微生物学和免疫学杂志

Objective To investigate the regulation of protein kinase C(PKC) to the expression of β-1,4-galactusyhransferase- Ⅰ ( β-1,4-GalT- Ⅰ ) and the influence on cytoskeleton and adherence ability of human umbilical vein endothelial cells(HUVECs) when stimulated by lipopolysaccharide (LPS). Methods Cultured HUVECs were pretreated by various PKC inhibitors or phorbol 12-myristate 13-acctate( PMA), an excitomotor of PKC respectively for 30 min, then stimulated by LPS for 4 h. β-1,4-GalT-Ⅰ expression were detected by RT-PCR and Western blot, expression of β-1,4-galactosylated carbohydrate chains and cytoskeleton were assayed by immumofluorescence, and adherence ability of HUVECs was observed by endothelialmonocyte cell adherence test. Results Up-regulated expression of β-1,4-GalT- Ⅰ and β-1,4-galactosylated carbohydrate chains in HUVECs stimulated by LPS were suppressed by PKC inhibitors and increased by PMA. F-actin and β-1,4-GalT- Ⅰ were partly co-localized in HUVECs. PKC inhibitor inhibited the effect of LPS on the distribution of F-actin and β-1,4-GalT- Ⅰ. Adherence ability of HUVECs enhanced by LPS was significantly suppressed by PKC inhibitor. Conclusion PKC signal transduction pathway may participate in regulating β-1,4-GalT-Ⅰ expression in endothelial cells stimulated by LPS. Furthermore, polytypes of PKC may participate in this regulating process; PKC might regulate cytoskeleton reorganization and adherence ability of EC through β-1,4-GalT-Ⅰ during inflammation.

Effect of Scalp-acupuncture Combined with Physical Therapy on Spastic Cerebral Palsy / 中国康复理论与实践

@#Objective To observe the effect of scalp-acupuncture combined with physical therapy on spastic cerebral palsy.Methods 80 children with spastic cerebral palsy were randomly divided into observation group and a control group,40 cases in each group.The observation group was treated with scalp-acupuncture combined with physical therapy,and the control group with physical therapy only.They were assessed with the Functional Independence Measure for children(WeeFIM) and the Gross Motor Function Measure(GMFM) before and 3 months after treatment.Results No side-effect was observed during the treatment.The scores of WeeFIM and GMFM of the observation group were significantly superior to the control group(P<0.05).Conclusion The scalp-acupuncture can improve the efficiency of physical therapy on motor function in the children with spastic cerebral palsy.

Preparation of functional monoclonal antibody against human CD28 and analysis of its biological feature / 细胞与分子免疫学杂志

Aim To prepare the monoclonal antibodies (mAbs) against human CD28 and to study its biological feature. Methods The hybridoma cell lines were obtained by fusing spleen cells of Blab/c mice that had been immunized with murine lymphoma cells transfected with full-length huaman CD28 cDNA to myeloma cells Sp2/0. Ascites were induced to produce the mAbs. The specificity and affinity of the mAb 18G8 was verified by CD28 competitive inhibitory test and FACS. Reactivities of mAb 18G8 to PBTC, U266, 8226, Jurkat and Daudi cell were studied by indirect immunofluorescence staining. mAb 18G8-inducing proliferation of peripheral blood T cells (PBTCs) was determined by [3H]thymidine incorporation test. Results Five hybridoma cell lines were obtained. mAb 18G8 secreted by one of the them, belong to mouse IgG2a. It recognized a epitope different from which recognized by the standard mAb(clone CD28.2). The Reactivitrates of the mAb 18G8 to PBTC, U266, 8266, Jurkat and Daudi cells were 70.2％ , 99.3％ , 98.6％ , 76.4％ and 1.9％ , respectively, similar with CD28.2. It was indicated that different antigen epitopes expressed on all above cells. mAb 18G8 could promote the PBTC proliferation in vitro(SI=7). It was indicated that The substitution of mAb 18G8 for B7-1 molecule could also mediate the costimulatory signals. Conclusion 18G8 is a specific and functional anti-CD28 mAb it may be of significant value in basic studies and clinical application.

Preparation of functional monoclonal antibody against human CD80(B7-1) and analysis of its biological effects / 中国免疫学杂志

Objective:To obtain a monoclonal antibody(mAb) against human CD80(B7 1) and to study of its biological effects.Methods:The hybridoma cell line was obtained by using the B lymphoma hybridoma technique after immunization of Balb/c mice with XG7 B7 the cells.Ascites were induced to produce the mAb.The specificity and affinity of mAb were verified B7 competition and FACS.Expression of B7 1 in PBLs,DCs,Raji and Daudi were studied by indirect immunofluorescence.Using counting and trypan blue staining,inhibitory effects of mAb on Raji and Daudi cells were analyzed.The neutralization activity of the 4E5 determined by MTT assay using PBLs as response cells.Results:The anti CD80(B7 1) was obtained.The expression of B7 1 in PBLs、DC、Raji ad Daudi was 10 2%,95 1%,96 7% and 89 2%,respectived 4E5 can inhibit the growth in Raji and Daudi cells and block the costimulatory signals of B7/CD28.Conclusion:4E5 is a specific and functional anti CD80(B7 1) and has high affinity for its ligand.It may be of significant value in basic studies and find clinical applications.

Relevance among cognition function,autonomic nerve function and the serum levels of monoamine neurotransmitter in patients with post-stroke depression / 临床神经病学杂志

Objective To explore the relevance among the cognition function,the autonomic nerve function,and the serum level of monoamine neurotransmitter in the patients with post-stroke depression(PSD).Methods The event-related potentials(ERP),the sympathetic skin response(SSR),and the serum levels of monoamine neurotransmitter were taken in the 33 cases with PSD(PSD group)and 30 normal collators(NC group),the mean of each target was tested by Pearson multiple correlation analysis.Results Comparing with the NC group,the PSD group demonstrated that the latency phase had been prolonged and the wave amplitude reduced significantly(all P