Objective Aimed to clarify the molecular mechanism after subarachnoid hemorrhage （SAH） by investigating the expression of tight junction protein Claudin-5 and ZO-1 and the effects of SP600125 on them. Methods Seventy-five male Sprague Dawley rats （300 to 350 g） were randomly divided into sham,SAH,SAH ＋ DMSO （dimethyl sufoxide） solution,SAH ＋SP600125 （C-Jun N-terminal kinase inhibitor）10 mg/kg,and SAH ＋SP600125 30 mg/kg groups. The standard endovaseular perforation was performed to produce experimental SAH. The JNK inhibitor SP600125 was intraperitoneally administered at 1 hour before and 6 hours after SAH. Results At 24 hours after SAH,signs of microvessels injury were observed in brain cortex. Compared with the sham group,expression of Claudin-5 and ZO-1 was sig- nificantly decreased （P 〈 0.05 ）. JNK inhibitior SP600125 suppressed the decrease of Claudin-5 and ZO-1 expression, attenuated blood-brain barrier disruption in rats after SAH. Conclusions The blood-brain barrier disruption is an important mechanism of early brain injury after SAH. JNK inhibitor SP600125 improves neurological outcomes and provides neuropmtecfion against acute events after SAH such as bloodbrain barrier disruption and cell apoptosis.

BACKGROUND: Tumor-adopted immunity and gene transduction technique are used to introduce tumor necrosis factor-α vector into carrier cells, which are then re-infused into the body so that cancer cells can be killed by tumor necrosis factor-α more directly and effectively with fewer side effects on the other tissues due to high local expression.OBJECTIVE: To study the bioactivity of in vitro cultured tumor necrosis factor-α transduced tumor-infiltrating lymphocytes as well as the inhibitory effects on cancer cells of cancer-loaded rats infused in different ways.DESIGN: A randomized controlled study based on experimental animals.SEETING: Cancer Research Institute of China Medical University.MATERIALS: This study was carried out at the Cancer Research Institute and the Experimental Animal Department, China Medical University,between January 2000 and December 2001. TJ8510 cell line (human brain glioblastoma cell line) was provided by the Neurological Research Institute of Tianjin Medical University Affiliated Hospital. The experimental animals were 36 BALB/C nude mice congenitally having no thymius.METHODS: Based on the establishment of tumor necrosis factor-α retroviral transduction system and the preparation of cartier cells tumor-infil-trating lymphocytes, the monoclonal virus cell line PLC-2 and PLJC-5available were used to introduce marked gene NeoR and targeted gene tumor necrosis factor-α into tumor-infiltrating lymphocytes, respectively.Then cell proliferation, tumor necrosis factor expression and in vitro antitumor activity were examined. After cancer cell inoculation, the 36 nude mice were randomly divided into 6 groups: local infusion control group, local tumor-infiltrating lymphocytes infusion group, local tumor necrosis factor-tumor-infiltrating lymphocytes infusion group, venous infusion control group, venous tumor-infiltrating lymphocytes infusion group and venous tumor necrosis factor-tumor-infiltrating lymphocytes infusion group, and the therapeutic effects on the cancer-loaded mice were observed.proliferation and tumor necrosis factor-α expression in tumor-infiltrating oR-tumor-infiltrating lymphocytes and tumor necrosis factor-tumor-infiltrating lymphocytes was not significantly different from each other (P ＞ 0.05).NeoR-tumor-infiltrating lymphocytes, though not significantly different (P ＞0.05), significantly differ from that of tumor necrosis factor-tumor-infiltrating lymphocytes (P ＜ 0.01); moreover, tumor necrosis factor-tumor-infiltrating lymphocytes were found to express higher tumor necrosis factor-α conactivity did not significantly differ between tumor-infiltrating lymphocytes and NeoR-tumor-infiltrating lymphocytes (P ＞ 0.05), but obviously increased come of the animal experiment: 40 days after tumor necrosis factor-tumorinfiltrating lymphocytes infusion, cancer size in local tumor necrosis factortumor-infiltrating lymphocytes infusion group was found smaller than that in local infusion control group [(307±42) and (2 048±278) mm3, P ＜ 0.01],and it was also smaller in venous tumor necrosis factor-tumor-infiltrating lymphocytes infusion group than that in venous control group [(954±195)and (1 989±305) mm3 , P ＜ 0.05].CONCLUSION: Tumor necrosis factor-α gene transduced tumor-infiltrating lymphocytes could effectively express tumor necrosis factor, exerting higher and in vivo anti-tumor effects than tumor-infiltrating lymphocytes in cancer-loaded nude mice. No obvious inhibitory effects on the growth of subcutaneous solid carcinoma could be observed in nude mice after venous infusion of human brain glioblastoma tumor-infiltrating lymphocytes, but the inhibitory effects became obvious due to venous infusion of tumor necrosis factor-tumor-infiltrating lymphocytes and significant due to local tumor necrosis factor-tumor-infiltrating lymphocytes infusion, indicating that local infusion is the preferable way in the treatment of glioblastoma by immuno-gene therapy.

Glioma is one of the most common intracranial tumors.Long non-coding RNA(lncRNA) cannot be translated into proteins but has many important effects on bio-functions and diseases of human beings.The functions of lncRNA includes epigenetic regulation,transcription regulation,lncRNA-miRNA interation,being precursor of miRNA and these functions play important role in pathogenesis of glioma,lncRNA has many regulatory effects on the proliferation,invasion and metastasis of glioma cells,and plays a guiding role in the diagnosis and treatment of glioma.lncRNA influence the proliferation,migration and invasion of glioma and the study of lncRNA mean a lot in the treatment of patients with glioma.

Objective To clarify the value of absorbable barbed suture in closure of galeal. Methods A total of 101 patients had craniotomy treated in Shengjing Hospital of China Medical University from October 2018 to February 2019 were divided into two groups according to the admission date. In the barbed suture group, 45 patients were sutured with QUILL by continuous stitching. In the control group, 56 patients were sutured with traditional stitchingby intermittent suture. Compare the differences in suture speed, average postoperative hospital stay, incision complication rate, and the average hospital costs of the two groups. Results The suture speed in barbed suture group was (0.330 ± 0.012) cm/min , and was significantly faster than that in control group (0.540 ± 0.016) cm/min;the postoperative average hospitalization days in barbed suture group was (10.91 ± 0.62) d, and was significantly shorter than that in control group (12.73 ± 0.41) d, there were significant differences (P<0.05) . However, the complications and hospital costs in two groups had no significant differences (P>0.05). Conclusions The use of absorbable barbed close epicranial aponeuroisiscan improve suture speed, shorten the postoperative average hospitalization days, which is worthy of promotion.

NEDDylation has been shown to participate in the DNA damage pathway, but the substrates of neural precursor cell expressed developmentally downregulated 8 (NEDD8) and the roles of NEDDylation involved in the DNA damage response (DDR) are largely unknown. Translesion synthesis (TLS) is a damage-tolerance mechanism, in which RAD18/RAD6-mediated monoubiquitinated proliferating cell nuclear antigen (PCNA) promotes recruitment of polymerase η (polη) to bypass lesions. Here we identify PCNA as a substrate of NEDD8, and show that E3 ligase RAD18-catalyzed PCNA NEDDylation antagonizes its ubiquitination. In addition, NEDP1 acts as the deNEDDylase of PCNA, and NEDP1 deletion enhances PCNA NEDDylation but reduces its ubiquitination. In response to HO stimulation, NEDP1 disassociates from PCNA and RAD18-dependent PCNA NEDDylation increases markedly after its ubiquitination. Impairment of NEDDylation by Ubc12 knockout enhances PCNA ubiquitination and promotes PCNA-polη interaction, while up-regulation of NEDDylation by NEDD8 overexpression or NEDP1 deletion reduces the excessive accumulation of ubiquitinated PCNA, thus inhibits PCNA-polη interaction and blocks polη foci formation. Moreover, Ubc12 knockout decreases cell sensitivity to HO-induced oxidative stress, but NEDP1 deletion aggravates this sensitivity. Collectively, our study elucidates the important role of NEDDylation in the DDR as a modulator of PCNA monoubiquitination and polη recruitment.
DNA Damage ; drug effects ; DNA Repair ; genetics ; DNA Replication ; genetics ; DNA-Binding Proteins ; genetics ; DNA-Directed DNA Polymerase ; genetics ; Endopeptidases ; genetics ; Gene Knockout Techniques ; Humans ; Hydrogen Peroxide ; toxicity ; NEDD8 Protein ; genetics ; Oxidative Stress ; genetics ; Proliferating Cell Nuclear Antigen ; genetics ; Ubiquitin-Conjugating Enzymes ; genetics ; Ubiquitin-Protein Ligases ; genetics ; Ubiquitination ; genetics ; Ultraviolet Rays

Objective:To understand the profile type of serum Epstein-Barr virus (EBV) antibodies in children with infectious mononucleosis (IM), and to analyze the significance of viral capsid antigen (VCA) IgG antibody affinity in the diagnosis of IM.Methods:Retrospective analysis was performed on the results of the serum anti-EBV antibody profile and plasma EBV nucleic acid test of 150 hospitalized children with IM diagnosed in Beijing Children′s Hospital, Capital Medical University, from May 2016 to May 2019.Anti-EBV antibody profiles, including anti-VCA-IgG, anti-VCA-IgM, anti-early antigen (EA) IgA, anti-EBV nuclear antigen (EBNA) IgG, and anti-VCA-IgG affinity, were detected by enzyme-linked immunosorbent assay (ELISA). Plasma EBV nucleic acids were detected by real-time quantitative PCR.Results:There were mainly two types of anti-EBV antibody profiles in 150 children with IM: (1)130 cases who were positive for anti-VCA-IgM/IgG, negative for anti-EBNA-IgG and positive for anti-VCA-IgG antibodies with low affinity, accounting for 86.7% (130/150 cases), of which 50 cases were positive for anti-early antigen IgA; (2)18 cases who were negative for anti-VCA-IgM, positive for anti-VCA-IgG, negative for anti-EBNA-IgG and positive for anti-VCA-IgG antibody with low affinity, accounting for 12.0% (18/150 cases), of which 5 cases were positive for anti-EA IgA.EBV DNA was measured in 132 children, with a posi-tive rate of 37.9% (50/132 cases).Conclusions:There were several types of serum EBV antibody profiles in children with IM, 12.0% of patients with IM in this study were negative for anti-VCA-IgM, and the diagnosis of IM was confirmed by the affinity of anti-VCA IgG.