Objective To investigate the role of high mobility group protein box 1 (HMGB1) in pulmonary vascular remodeling in a rat model of acute lung injury (ALI).Methods Thirty healthy pathogen free male Wistar rats weighing 220-250 g were randomly divided into 3 groups (n =10 each) ∶ group control (group C) ;group LPS (group M) and group LPS + HMGB1 antibody (group H).The animals were anesthetized with intraperitoneal 10％ chloral hydrate 7 ml/kg.ALI was induced with LPS 1 mg/kg infused iv over 30 min in groups M and H.In group H HMGB1 antibody 2 mg/kg was injected iv at 12,24 and 36 h after LPS administration respectively.The animals were sacrificed at 72 h after LPS administration.The left lung was removed for microscopic examination,measurement of the thickness of the medial layer (tunica media) of pulmonary arterioles and determination of the expression of PCNA (by immune-histochemistry) and HMGB1 protein (by Western blotting).Results The medial layer of pulmonary arterioles was significantly thicker and the expression of PCNA and HMGB1 higher in group M than in group C.LPS also induced significant inflammatory cell infiltration within the alveoli and damage to the septa.In group H HMGB1 antibody significantly attenuated the above-mentioned LPS-induced changes.Conclusion HMGB1 may play an important role in the LPS-induced pulmonary vascular remodeling.

Objective To explore the health education model of cerebral palsy rehabilitation.Methods Forty children with spastic cerebral palsy were screened and randomly divided into the therapy group and the control group.All the children received common health education,but parents of the therapy group were offered new standardized systematic health education whenever their children were in hospital or discharged from hospital by primary nurses.The Improved Ashworth Spasm Evaluation,GMFM evaluation and ADL evaluation were respectively performed in both the therapy and the control groups before the treatment and after six-month rehabilitation.Results There was no significant difference in the index score between both groups before the treatment.After six months,all the above indicators increased in both groups.And notably,significandy more increment was observed compared with the control group.Conclusions The new health education can further improve gross motor function and ADL of cerebral palsy children,which can be popularized and used as a new health education model for cerebral palsy rehabilitation.

Objective To evaluate the effect of hyperbaric oxygen therapy (HBOT) in patients with severe traumatic brain injury (STBI) after craniotomy,and evaluate the difference of HBOT effects on the patients whose Glasgow coma score (GCS) were 6-8 scores and 3-5 scores.Methods Using case-control study,61 neurosurgical in-patients with STBl from February 6,2009 to November 25,2010 were divided into two groups by random digits table,30 in HBOT group and 31 in control group.Their GCS at the periods on admission,before HBOT and when they finished HBOT were recorded,as well as the Glasgow outcome score (GOS) before HBOT,finished HBOT,and 3 months after admission (GOS3M).Results The GCS finished HBOT were (12.63 ±2.70) scores in HBOT group and (11.64 ±2.50) scores in GCS 3-5 subgroup,there were statistically differences than those in control group [ (10.61± 3.01 ),(8.44 ± 1.67)scores] (P ＜0.05).The mean rank of GCS finished HBOT improvement (△GOSf) and GOS scores 3months after admission ( △ GOS3M) in HBOT group was 35.37 and 35.87,which were significantly higher than those in control group (26.77 and 26.29) (P ＜0.05).Meanwhile,the mean rank of △GOSf and △ GOS3M in GCS 3-5 subgroup was 12.14 and 13.09,which were significantly higher than those in control group (8.05 and 7.33) (P ＜ 0.05 ).In GCS 6-8 subgroup,there was no significant difference in △ GOSf and △ GOS3M between HBOT group and control group (P ＞ 0.05).Conclusion Early HBOT is effective to improve the recovery of consciousness and prognosis of the postoperative patient with STBI,especially of the patients with the special STBI (GCS 3-5 scores ).

To provide a foundation for the development of rapid and specific methods for the diagnosis of rabies virus infection,anti-rabies virus monoclonal antibodies were prepared and rabies virus nucleoprotein and human rabies virus vaccine strain (PV strain) were used as immunogens to immunize 6-8 week old female BALB/c mice.Spleen cells and SP2/0 myeloma cells were fused according to conventional methods:the monoclonal cell strains obtained were selected using the indirect immunofluorescence test; this was followed by preparation of monoclonal antibody ascitic fluid; and finally,systematic identification of subclass,specificity and sensitivity was carried out.Two high potency and specific monoclonal antibodies against rabies virus were obtained and named 3B12 and 4A12,with ascitic fluid titers of 1∶8000 and 1∶10000,respectively.Both belonged to the IgG2a subclass.These strains secrete potent,stable and specific anti-rabies virus monoclonal antibodies,which makes them well suited for the development of rabies diagnosis reagents.

Background Intracorneal macrophages play a critical role in corneal neovascularization (CNV)by secreting relative chemokines.But macrophages are characteristic by heterogeneity which has different biologic functions under different induction or stimulation from microenvironment.Objective This study was to detect the effects of chemokine (C-X3-C motif) ligand 1 (CX3CL1) and chemokine (C-C motif) ligand 2 (CCL2) on macrophages in vitro.Methods CNV was induced by corneal alkali burn in the left eyes of 20 male BALB/c mice aged 7-8 weeks.The CNV was evaluated under the slit lamp microscope 4 days after alkali burn,and then the corneal sections were prepared after mice were sacrificed.The expressions of CCR2 and CX3CR1 in the corneal specimens were detected by histo-fluorescence staining.Human peripheral blood mononuclear cells were separated using density gradient centrifugation and incubated in RPMI-1640 medium containing 10％ fetal bovine seruml(FBS) with 30 μg/L granulocyte-macrophage colony-stimulating factor (GM-CSF).The cells were divided into CD68 +CCR2 group and CD68+CX3CR1 group,and the percentage of the CX3CR1 and CCR2 expressions in the infiltrated macrophages of corneal specimens and human monocyte-derived macrophages was assayed by flow cytometry.The cultured cells were stimulated using human recombinant CX3CL1 and CCL2 proteins,and real-time PCR was used to detect the relative expressions of angiogenesis-related factors in macrophages.Results CNV was found in corneas 4 days after alkali burn and the CNV onsets from corneal limbus to central zone observed by a slit lamp.CCR2 and CX3CR1 were expressed in the F4/80-positive macrophages in alikali burned corneas.The macrophages grew for two weeks and appeared more dead cells in without GM-CSF group,but in GM-CSF induced group,the number of macrophages was increased.The percentage of CX3CR1-positive cells was 75％ and that of CCR2-positive cells was 45％.Real-time PCR showed that expression level of vascular endothelial growth factor (VEGF) mRNA increased and that ADAMTS-1 mRNA or TSP-1 mRNA decreased on macrophages after CCL2 stimulation,with significant differences in the 150 mg/L CCL2 group compared with the control group (t =-5.09,P =0.03 ; t =3.01,P =0.04 ; t =4.27,P =0.02).However,the VEGF mRNA expression decreased and ADAMTS-1 mRNA and TSP-1 mRNA increased after CX3CL1 stimulation,showing significant differences between the 150 mg/L CX3CL1 group and the control group (t=6.35,P=0.O2;t=-2.92,P=0.04; t=-3.81,P=0.03).Conclusions These results suggest that the macrophages have high heterogeneity.CCL2-and CX3CL1-expressing macrophages can regulate the expressions of angiogenesis-related factors.Macrophage chemokine signal may be a good target for treatment of neovascular ocular disease.

Objective To establish the fingerprints method of capillary electrophoresis for Leonurus heterophyllus Injection.Methods Method of capillary zone electrophoresis was developed to establish the fingerprints of Leonurus heterophyllus Injection with the peak of stachydrine as reference.Results Fingerprints of Leonurus heterophyllus Injection obtained contained 12 major common peaks.Conclusion The method has good reproducibility and resolution which can be used for the quality control of Leonurus heterophyllus Injection.

An interaction between the HSV-1 UL25 capsid protein and cellular microtubule-associated protein was found using a yeast two-hybrid screen and β-D-galactosidase activity assays. Immunofluorescence microscopy of the UL25 protein demonstrated its co-localization with cellular microtubule-associated protein in the plasma membrane. Further investigations with deletion mutants suggest that UL25 is likely to have a function in the nucleus.

BACKGROUND:In recent years, based on high-throughput molecular imaging, integration of genomics, proteomics and computer aided design and the application of correlative “technical chains” have achieved great achievements in the research of breast cancer, lung cancer, gastric cancer, colon cancer, ovarian cancer and melanin tumor. However, there are few researches on oral squamous cel carcinoma. OBJECTIVE:To detect the gene expression profile of the oral squamous cel carcinoma tissue and normal paracarcinoma tissue using DNA chip-based gene expression profile. METHODS:Two samples of oral squamous cel carcinoma tissue and normal paracarcinoma tissue of patients who received treatment at Stomatological Hospital of Guangdong Province of China in 2013 were included in this study. The gene expression profiles of oral squamous cel carcinoma and normal paracarcinoma tissue were determined by the Roche NimbleGen gene expression microarrays. RESULTS AND CONCLUSION: According to screening criteria of differential genes, 7 872 out of 32 448 detected genes were differentialy expressed genes of oral squamous cel carcinoma, which accounts for 24% of the total number of the screening genes. 3 800 genes were up-regulated, and 4 072 were down-regulated. The results confirm that through detection with the help of gene expression profile clip, 7 872 differentialy expressed genes were obtained through DNA chip-based gene expression profiles according to the screening criteria. Thus it can be concluded that the occurrence and development of the tumors are not a result of single or several genes. Previous experiments based on a single or several genes have great limitations. These findings also suggest that the occurrence of tumor is a result of mutual regulatory effects of many genes forming a network, moreover, the interactions of the network is quite complicated.

Objective:To evaluate the value of MAGiC STIR sequence inassessing bone marrow edema (BME) of the sacroiliac joint (SIJ) in ankylosing spondylitis (AS) patients.Methods:Twenty two AS patients from the Affiliated Fifth Hospital of Sun Yat-sen University from September 2019 to January 2020 underwent MR scanning, consisting of T 2WI fat-suppressed (FS) sequence and MAGiC sequence. Each SIJ was divided into four quadrants for analysis on oblique coronal MR image. Two radiologists [middle-higher seniority levels (radiologist 1 and radiologist 2) reviewed image sets of two sequences [T 2WI FS and MAGiC short T 1 inversion recovery (STIR) sequence] independently at separate times, using Hermann-Braun scoring system for degree of BME and summing numbers of quadrants based on BME findings. Disagreements were resolved to reach an agreement for final results.Assessments were repeated two weeks later by radiologist 2. Intra-class correlation coefficients (ICC) were calculated to assess the inter-and intra-observer agreement for the degree of BME and numbers of positive BME quadrants in the MAGiC STIR sequence, respectively. The differences between the two sequences for the degree of BME and numbers of positive BME quadrants were analyzed with Wilcoxon signed-rank test and Chi-square test, respectively. Taking the results of T 2WI FS sequence as a reference standard, the ROC curve was drawn, sensitivity, specificity, positive predictive value and negative predictive value in the detection of BME were calculated for the MAGiC STIR sequence. Results:Nineteen AS patients including 38 sacroiliac joints were enrolled in our study, being divided into 152 quadrants. Inter-and intra-observer agreement for the degree of BME and inter-observer agreement for numbers of positive BME quadrants in the MAGiC STIR sequence were all good (ICC=0.936, 95%CI 0.912-0.953, P<0.001; ICC=0.910, 95%CI 0.878-0.934, P<0.001; ICC=0.876, 95%CI 0.833-0.909, P<0.001). The difference between the two sequences for the degree of BME in quadrants was statistically significant ( Z=-3.132, P=0.002). But there was no statistically significant difference between sequences for numbers of quadrants in detecting BME (χ2=0.244, P=0.622). Area under the ROC curve of MAGiC STIR sequence in diagnosis of BME was 0.920 ( P<0.001). Sensitivity, specificity, positive predictive value and negative predictive value for the MAGiC STIR sequence in the detection of BME were 82.0%, 95.1%, 89.1% and 91.5%, respectively. Conclusion:MAGiC STIR sequence can be used to evaluate bone marrow edema of SIJ in AS patients with high sensitivity and specificity.

Aim To investigate the protective effects of beraprost sodium on cerebral cortical neuron injury in chronic aluminum-overload rats and its effects on PGIS-IP signaling pathway. Methods 75 SD rats were randomized into five groups: normal control group, chronic aluminum-overload group ( model group) and beraprost sodium groups-low dose (6 μg· kg-1 ), medium dose ( 12 μg · kg-1 ) and high dose (24 μg·kg-1). Aluminum gluconate (Al3+ 200 mg ·kg-1 d-1, once a day, 5d a week, for 20 weeks, p. o. ) was administered to rats of cerebral damage model. The rats of experimental groups were concomi-tantly treated with beraprost sodium ( p. o. ) daily for 20 weeks. After the model was built successfully, the spatial learning and memory( SLM) function was done by Morris water maze. The cortical neurons damage was detected by HE staining, SOD activities and MDA contents. The 6-k-PGF1α levels in cortex were meas-ured by ELISA. The expressions of PGIS, IP mRNA and IP protein were also studied. Results Compared with the rats of normal control group, the SLM function was significantly impaired ( P<0. 01 ) and considera-ble karyopycnosis was observed in model group rats. The SOD activities were weakened ( P <0. 01 ), the MDA contents increased ( P<0. 05 ) and the levels of 6-k-PGF1α raised significantly ( P <0. 01). The ex-pressions of PGIS and IP mRNA in the rats cortex obvi-ously increased ( P<0. 01 ), so did the expression of IP protein(P<0. 05). Compared with the rats of mod-el group, the SLM function of rats in experimental groups decreased significantly ( P<0. 01 ) and damage of cortical neurons reduced remarkably. The SOD ac-tivities increased ( P <0. 01 ) and the MDA contents decreased ( P <0. 01). Besides, the content of 6-k-PGF1α, the expressions of PGIS mRNA and IP protein in the rats cortex decreased significantly ( P<0. 05 ) as well as IP mRNA ( P<0. 01). Conclusion Our re-sults demonstrate that in cerebral cortical neuron of chronic aluminum-overload rats, beraprost sodium has notably protective effects and the mechanism might be related to PGIS-IP signaling pathway.