A 8-years-old male patient with a bulge of left eye ball for one mongth was hospitalized. The inspection of the patient showed the movement on the left side of the lateral nasal wall and a narrow nasal cavity. Orbital CT showed that the left orbital ethmoid sinus, maxillary sinus cyst, left orbital, sphenoid sinus, nasal cavity were damaged. A resection with the combination of approaches including the left maxillary sinus, the ethmoid sinus, and the sphenoid sinus osteofibroma was performed. 5 days after the operation, the nasal packing material was removed and 7 days after the operation the stiches were removed. The recovery of the patient was satisfied after the operation and no recurrence was observed during one and half years follow up.
Child ; Ethmoid Sinus ; pathology ; Humans ; Male ; Maxillary Sinus ; pathology ; Nasal Cavity ; pathology ; Nasal Surgical Procedures ; Ossification, Heterotopic ; diagnosis ; surgery ; Paranasal Sinus Diseases ; diagnosis ; surgery ; Sphenoid Sinus ; pathology

Background and purpose:This study was to investigate the effect of miRNA-486 on the growth of human colorectal cancer cell line SW620 xenograft in nude mice and to explore the possible mechanism of action. Methods:Eighteen mice were randomly divided into three groups, including the experimental group, the negative control group and the blank control group. Each group contained 6 mice. The SW620 cell line was inoculated subcutaneously into nude mice to establish the model of human colorectal cancer xenografts. Peritumoral injection of miRNA-486 overexpres-sion plasmid, or blank vector and PBS were performed every 3 days. The volumes of subcutaneous tumors in each group of inoculated mice were compared. Then mice were sacrificed 3 weeks after infection. Immunohistochemistry and Western blot were used to measure the expression of neuropilin-2 (NRP2).Results:The growth rate of tumors in the experimental group was significantly lower than that in the negative control group and the blank control group. After 21 days, the size of transplanted tumors in the experimental group nude mice was (0.32±0.12) cm3, that in the negative control group was (0.77±0.31) cm3, and that in blank control group was (0.82±0.18) cm3. Tumor mass in the experimental group was sig-nificantly smaller than that in the other two groups (P=0.006<0.05). Tumor mass in the experimental group was (0.40±0.08) g, significantly smaller than that in the negative control group (0.75±0.18) g and in the blank control group (0.79±0.18) g (P=0.008<0.05). Compared with the expression of NRP2 in other groups, the growth of tumor in the experimental group de-clined (P=0.000<0.05).Conclusion:Colorectal cancer cell line SW620 xenografted tumor in nude mice can be suppressed after injection of miR-486, which may decrease the expression of NRP2.

Epilepsy is one of the most common diseases of the central nervous system, affecting tens of millions of people around the world. Most of clinically used antiepileptic drugs are based on ion mechanism to antagonize epileptic seizures, targeted to various ion channels or ion channel receptors. However, with the in-depth research on the pathogenesis of epilepsy, the non-ionic antiepileptic mechanism has increasingly become the key to the control of various intractable epilepsy, and the relevant drugs have gradually achieved clinical transformation. In this paper, non-ionic antiepileptic mechanisms are classified to clinical and preclinical types according to whether clinical transformation has been achieved. The application of non-ionic antiepileptic drugs in refractory epilepsy was mainly introduced, including everolimus, cannabidiol, fenfluramine, padsevonil, medium chain triglyceride modified ketogenic diet, and anakinra. Additionally, some preclinical non-ionic antiepileptic mechanisms such as prostaglandin, adenosine, metabolic glutamate receptor and mitochondrial mechanism are briefly introduced. The authors believe that the current stage of ionic antiepileptic drugs research has reached the bottleneck of transformation and it is difficult to achieve a major breakthrough in the mechanism, but there are broader research prospects in non-ionic antiepileptic mechanisms because a large number of them have not yet been clinically transformed. From a deeper perspective, some non-ionic antiepileptic mechanisms may have been involved in the fundamental mechanism of epileptogenesis, and they may be the prospect for the future treatment of refractory epilepsy.

Retrieval of ancient DNA (aDNA) sequences from organism remains provide direct view of their evolutionary history. However, researches on aDNA have suffered from lots of technical problems. Specifically, discredited sequences were generated from damaged aDNA templates, and expensive and time-consuming methods were employed. Here, a method which could recover the endogenous aDNA as well as to reduce the cost and research period is described. This is achieved by improving the ancient DNA extraction method of isopropanol precipitation, and reevaluating the method of PCR after N-glycosylase (UNG) treatment, which could remove the damaged DNA from the aDNA extract. The efficiency of these methods were tested by comparing with traditional methods using ancient specimens of pig teeth aged between 4 300 years before present (BP) and 3 900 BP. The results showed that: firstly, the extraction efficiency of the improved method of isopropanol precipitation and current method with silica-based spin column were all 60%. Furthermore, the research period at least could be reduced by half with the application of the improved methods and the cost to 1/10 of the current method. Secondly, sequences obtained through the method of PCR after UNG treatment were 100% authentic. In contrast, 66%～ 88% sequences were authentic based on the results obtained with the method of multiple PCRs without UNG treatment. And the research cost and period needed by the method with UNG treatment were only half of the later one. These results demonstrate that the improved extraction method of isopropanol precipitation combined with the method of PCR after UNG treatment could increase the success rate of authentic DNA amplified and at least reduce the research cost and period by half. Therefore, this method can be applied in the large-scale detection of ancient specimens.

AIM:To observe whether modified epitopes from pancreatic tumor antigen mucin 4 (MUC4) have HLA-A2-restricted antitumor ability.METHODS:RT-PCR and Western blot were used to identify the expression of MUC4 in the pancreatic tumor cell lines CAPAN-2 and ASPC-1.HLA-A2 epitopes from MUC4 protein were predicted by the software of NetCTL 1.2, BIMAS, SYFPEITHI and IEDB.The modified peptides from MUC4 containing HLA-A2 were obtained by replacing anchor residues of the binding anchor motifs.The peptides were synthesized by standard solid-phase methods.The binding affinity of the peptides to HLA-A2 molecule was evaluated by T2 binding assay.ELISPOT assay was used to investigate the ability of the peptide to induce specific restricted cytotoxic T-lymphocytes (CTLs) and release of IFN-γ.The ability of the peptides to induce T-cell response was investigated by cytotoxicity assay in vitro.RESULTS:The expression of MUC4 was observed in the CAPAN-2 cells and ASPC-1 cells.The candidate peptides P1944-1Y, P1944-2L, P1944-1Y2L, P2004 and P2004-1Y9V showed moderate affinity toward HLA-A2 molecule.T2 binding assay showed that P1944-1Y2L and P2004-1Y9V had significantly higher affinity for HLA-A2 than the native peptides.ELISPOT assay showed P1944, P1944-1Y2L, P2004 and P2004-1Y9V were able to induce specific CTLs and more amounts of IFN-γ were released.ELISPOT assay showed that significantly more amounts of IFN-γ released by P1944-1Y2L and P2004-1Y9V were observed than the native peptides.The CTLs induced by P1944, P1944-1Y2L, P2004 and P2004-1Y9V lyzed the CAPAN-2 cells.P1944-1Y2L and P2004-1Y9V peptide-specific CTLs showed higher cytotoxicity against pancreatic tumor cell line CAPAN-2 than the native peptide-specific CTLs.CONCLUSION:Compared with the native peptides, modified epitopes P1944-1Y2L and P2004-1Y9V have higher binding affinity with HLA-A2 and retain immunogenecity.In addition, the anti-tumor immunity of modified epitopes P1944-1Y2L and P2004-1Y9V is stronger than that of the native peptides.The peptides P1944-1Y2L and P2004-1Y9V are excellent HLA-A2-restricted CTL epitopes from tumor antigen MUC4, which could serve as new candidates towards antitumor peptide vaccines.

Objective To explore the change in heme oxygenase-1 (HO-1) level in cerebrospinal fluid(CSF)and serum in patients with mild cognitive impairment(MCI),and the correlation between HO-1 and the rating scale,to provide a new marker for the diagnosis of MCI.Methods The HO-1 levels in CSF and serum in 45 MCI patients (MCI group) and 85 normal cases (control group) were analyzed with sensitive enzyme linked immunosorbent assays (ELISA).MMSE and MoCA scores were evaluated.Results The level of HO-1 was higher in MCI group than in control group both in CSF [(631.38±32.17)vs(480.75±17.98)ng/ L,P＜0.05],and in serum [(612.52±111.48)vs.(384.16±56.86)ng/ L,P＜0.05].The MCI and normal people HO-1 level had no significant difference between CSF group and serum group (P＞0.05).In MCI group,the levels of serum and CSF HO-1 had a positive correlation with MMSE scores (P＜0.05),but had no obvious correlation with MoCA scores (P＞0.05).In the normal group,the level of HO-1 was negatively related with MMSE scores in serum and CSF,and with MoCA scores in CSF (P＜0.05),but no obvious correlation in serum (P＞0.05).The levels of serum and CSF HO-1 had no obvious correlation with age in both groups (P＞0.05).Conclusions HO-1 concentration in both CSF and serum is significantly higher in MCI group than in normal group,and positively related with MMSE score.Thus the increase of HO-1concentration in both CSF and/or serum might be a new marker for the diagnosis of MCI.

Objective To investigate the regulatory effects of IFN-γon the expression of pro-grammed death ligand 2 (PDL2) on human placenta mesenchymal stem cells (hPMSCs) and the hPMSCs-induced differentiation of peripheral blood CD 8+IL-10+T cell subsets .Methods hPMSCs were isolated from mature human placenta by enzyme digestion .The expression of PDL2 on hPMSCs and the regulatory effects of IFN-γon PDL2 expression were detected by RT-PCR and flow cytometry ( FCM ) , respectively . Peripheral blood mononuclear cells (PBMCs) were isolated from healthy subjects by density gradient centrif-ugation.T cells were purified with sheep red blood cells .FCM was used to detect the ratios of CD 8+IL-10+T cell subsets in PHA or CD3/CD28 beads activated T cells in the presence of hPMSCs treated with Anti-PDL2 McAb or IFN-γ.Results PDL2 molecules were highly expressed on hPMSCs that could be further enhanced by IFN-γ.The results of FCM demonstrated that hPMSCs could induce the differentiation of CD 8+IL-10+T cell subsets .The ratios of CD8+IL-10+T cell population in T cells activated by different stimulators including PHA and CD3/CD28 beads were significantly increased in the presence of hPMSCs as compared with those without hPMSCs (P<0.01).In addition, the antibody blocking experiments indicated that PDL 2 McAb down-regulated the percentages of CD 8+IL-10+T cell subsets in PHA or CD 3/CD28 beads stimulated T cells in the presence of hPMSCs as compared with those of unblocked groups .CD8+IL-10+T cell subsets were up-regulated in IFN-γtreated hPMSCs groups as compared with those of untreated groups .Conclusion hPMSCs could induce the differentiation of peripheral blood T cells into CD 8+IL-10+T cell subsets , which was enhanced by PDL 2 expressed on hPMSCs .IFN-γcould promote the differentiation of CD 8+IL-10+T cell subsets induced by hPMSCs through up-regulating the expression of PDL2 on hPMSCs.

Objective To investigate the effect of transcranial direct current stimulation (tDCS) on aphasia recovery after stroke. Meth-ods From April, 2012 to January, 2013, 20 aphasic patients after stroke were enrolled in an A-B experiment design. During phase A, ten times of sham tDCS and language training (five days a week) were implemented, then ten times language training combined with tDCS (five days a week) were implemented in phase B. The treatment lasted for four weeks. Picture naming was measured for all patients before and af-ter treatment both in phase A and phase B. Results The D-value scores of picture naming before and after treatment were significantly more in phase B than in phase A in both treatment items and non-treatment items (t>3.030, P<0.05). Conclusion tDCS could raise the accuracy of picture naming in patients with aphasia after stroke.

Objective Pleural effusion of patients with tuberculous pleurisy was analyzed by ultra high performance liquid chromatography-mass spectrometry (UPLC-MS).Orthogonal partial least squares discriminant analysis (OPLS-DA) model was established for searching and analyzing the potential metabolic biomarkers to provide new ideas for the early diagnosis of tuberculosis pleurisy.Methods Totally 166 cases of pleural samples were collected from November 2012 to September 2013 in Tianjin Haihe Hospital (tuberculosis pleurisy 83 cases,bacterial pleurisy 31 cases,lung cancer 30 cases and heart failure 22 cases)and metabonomics quantitative analysis was conducted.Quantitative analysis of metabolic methods was enrolled.Orthogonal partial least squares discriminant analysis (OPLS-DA) model was constructed by the pattern recognition method.Based on the OPLS-DA model,potential biomarkers was filtered preliminary by variable importance in the projection (VIP) and VIP confidence interval value.The specific metabolites were determined by applying non-parametric test(Kruskal-Wallis H test)by using SPSS 17.0,and potential metabolic biomarkers were screened.Results The prediction accuracy of OPLS-DA model was 100％ (38/38),which illustrated that the model could verify the tuberculous pleurisy group and the control group accurately.Based on the data of metabolites,46 potential metabolites were finally screened and 5 metabolites were identified with statistically significant differences (P ＜ 0.05).The data of tuberculosis pleurisy group showed a significant increase in 17a,20a-Dihydroxy cholesteryl,phospholipid [20∶4 (8Z,11Z,14z,17Z)] (1 188 670.00),tocotrienols (1 051 760.00) and phospholipid(O-18:0) (434 394.00) compared with the lung cancer group(735 615.00,336 815.00,324 563.00,193 055.00),bacterial pleurisy group (1 678 805.00,598 256.50,699 384.00,343 866.00),and heart failure group(535 842.00,253 503.00,234 503.00,130 185.00) (H =26.787,18.680,26.193,21.024,P ＜0.01),and a significant decrease in L-phenylalanine(245 976.00)compared with the lung cancer group(753 033.50),bacterial pleurisy group (357 278.00),and heart failure group(586 678.00) (H =13.635,P ＜ 0.01).Conclusions The OPLSDA model constructed on the basic of UPLC-MS technology platform can verify the tuberculous pleurisy group and the control group accurately,and the study provides new ideas and methods for identifying features of tuberculous pleurisy markers and early diagnosis.

Objective:To compare the clinical efficacy between our first generation and second generation dynamic anterior plate-screw system for quadrilateral area (DAPSQ) in the treatment of T-shaped acetabular fractures.Methods:A retrospective study was conducted of the 28 patients with T-shaped acetabular fractures who had been treated at Department of Orthopaedics, General Hospital of Central Theater Command from January 2008 to December 2019. They were divided into 2 groups according to fixation methods. Group A [15 patients, 11 males and 4 females, an age of (43.5±9.1) years] were treated with the first generation DAPSQ while Group B [13 patients, 8 males and 5 females, an age of (42.5±7.0) years] with the second generation DAPSQ. Operation time, intraoperative bleeding, fracture reduction, function of the affected hip and postoperative complications were recorded and compared between the 2 groups.Results:The 2 groups were comparable because there was no significant difference between them in the preoperative general data ( P>0.05). The 28 patients were followed up for 12 to 60 months (average, 35.0 months). The operation time [(193.9±33.3) min] and intraoperative bleeding [(830.8±177.4) mL] for Group B were significantly less than those for Group A [(231.3±40.0) min and (1,043.3±190.7) mL] ( P<0.05). In Group A, according to the Matta scoring, the fracture reduction was rated as excellent in 8 cases, good in 5 and poor in 2; in Group B, the fracture reduction was rated as excellent in 8 cases, good in 4 and poor in one. According to the modified Merle d'Aubigné & Postel scoring at the final follow-up, the function of the affected hip was rated as excellent in 9 cases, as good in 3, as fair in 2 and as poor in one in Group A while as excellent in 9 cases, as good in 2 and as fair in 2 in Group B. There were no statistically significant differences between the 2 groups in reduction quality or in the function of the affected hip ( P>0.05). Follow-up observed hip traumatic arthritis in 2 cases in Group A and in one in Group B. Conclusion:In the treatment of T-shaped acetabular fractures, compared with the first generation DAPSQ, the second generation DAPSQ can shorten operation time and decrease intraoperative bleeding significantly, though both achieve comparable functional outcomes.