Objective: To investigate the effect of fusion protein tick anticoagulant peptide (TAP)-staphylococcus aureus superantigen-like protein 5 (SSL5) on the formation of atherosclerotic plaque in ApoE knockout (ApoE-/-) mice.Methods: Totally 21 male 12-week-old ApoE-/-mice were randomly divided into three groups: TAP-SSL5 (3 mg·kg-1·d-1) group, SSL5 (2 mg·kg-1·d-1) group and the blank control group (pH 7.4 phosphate buffer), ip, qd, for 12 weeks.The changes of body mass were observed.The mice were fed with high cholesterol diet for 12 weeks, and then the levels of total cholesterol (TC), triglyceride (TG), high density lipoprotein cholesterol (HDL-C) and low density lipoprotein cholesterol (LDL-C) in plasma were detected.The aorta of mice was subjected to paraffin section and routine HE staining.The formation of atherosclerotic plaque in the aortic root was analyzed.The distribution of atherosclerotic plaques was observed by oil red O staining of the aorta.Results: Compared with that of the blank control group, the increasement of body weight of TAP-SSL5 group and the level of TC significantly decreased (P <0.001), while TG, HDL-C and LDL-C did not change significantly.The HE staining results showed that the plaque area of root slice in the aorta in TAP-SSL5 group was significantly lower than that in the blank control group (P<0.05).The red O staining of aorta showed that the formation of atherosclerotic plaque in TAP-SSL5 group was significantly smaller than that in the blank control group.Conclusion: TAP-SSL5 can significantly inhibit the formation of atherosclerotic plaques in the arteries of ApoE-/-mice.

Currently endoscopic retrograde cholangiopancreatograhp(ERCP) has been one of the major treatments to diagnose and cure pancreatic and choledochal diseases in many large and medium-sized hospitals.To meet the requirements of the army,ERCP treatment is practiced in field battle X-ray diagnosis vehicle(Model XCY2002-1/200) and has achieved satisfactory effects.The functions of field battle X-ray diagnosis vehicle in model of XCY2002-1/200 are expanded and new access are explored to cure patients with pancreatic and choledochal diseases in the field.

Review preparations about small caliber artificial blood vessels,cell cultivation,nano materials and growth factors in the research of vascular tissue engineering.The main method of keeping small diameter vascular graft patency is to promote the small-diameter artificial vascular cells,using nanometer encapsulated growth factor delivery system which can promote the growth of endothelial cells at the luminal surface adhesion,and using anticoagulant drug delivery system.

Objective To explore the localization of epileptogenic focus and select the appropriate surgical procedures for post-traumatic epilepsy. Methods The clinical data of 21 patients with post-traumatic epilepsy were studied retrospectively. Epileptogenic focus was located by comprehensively analyzing data of electro-neurophysiology, neurological imaging and clinical manifestation. Surgical procedures were performed in all patients, including resection of lesion and peripheral cortex in 12 patients, epileptogenie focus resection plus low power bipolar coagulation in five, anterior temporal iobectomy plus amygdalohippocampectomy in three and corpus callosotomy in one. Results All patients were followed up from 6 months to 3 years, which showed satisfactory outcome in eight patients, marked improvement in six, improvement in five and slight improvement in two. The total effective rate was 90%. Conclusions Surgical procedure is important for intractable post-traumatic epilepsy. The good efficacy depends on precise localization of epileptogenic focus and combined application of various surgical procedures.

200 papers on nerve root type cervical spondylosis treated with Chinese medicine were retrieved and 38 papers with complete diagnostic criteria and medical statistics were included for study. The results showed acupuncture, massage, and herbal therapy were three common methods and have their own advantage, but systemic, standardized and normative treatment program was lack. In the meantime of treating nerve root type cervical spondylosis, prevention should also be paid attention. The treatment, prevention and exercise on the whole therapeutic idea should be established, which has far-reaching significance.

Objective To construct a model of small caliber vascular endothelial growth factor(VEGF) in tissue engineering,to investigate the performance of the sustained-release microspheres and vascular stent,and to provide materials and theoretical basis for animal experiment.Methods The sheep carotid arteries were treated with a cellular reagents,the cellular conditions and the stent properties were observed.Preparation of sustained release microspheres containing VEGF,particle size,encapsulation efficiency,drug loading and release curve were measured.The effective combination of the slow release microsphere and the vascular stent was used in the freeze drying technology.The rat vascular endothelial cells grown in tissue engineered blood vessel model release lumen,observe the growth of endothelial cells.Results After the treatment,the original performance of the vascular stent can be maintained.The average particle size of the microspheres was (9.8 ± 6.0) μm,which could be released slowly in 20 days,and the release rate was 70％.Microspheres can effectively with the tissue.engineering blood vessel tight binding.Rat vascular endothelial cells can grow in the vascular stent surface.Conclusion Using Triton X-100,DNA/RNA ribozyme for acellular reagent,stent performance is good.PLGA microspheres have good sustained release performance,and constructing appropriate tissue engineered small caliber vascular release model by using freeze drying technology can make the stent compact structure.

Objective To explore the characteristics of MRI images and pathological features of demyelinating pseudotumor (DPT).Methods Five patients with demyelinating pseudotumor were histologically confirmed.Their MR imaging were re-viewed and the enhancement patterns were analyzed.Results Among the five cases with demyelinating pseudotumor,single le-sion was found in 4 cases,and multiple lesions in 1 case.Most lesions had a clear boundary and these space occupying lesions were irregular (3 cases).The signal intensity on T1 WI was lower than edema,and it had a specific “core and halo”feature,du-al-high signal with different intensity on T2 WI,slightly higher signal intensity on DWI,and on enhanced MRI,nodular or patch-y enhancement and open ring enhancement with edema around the lesions were observed.The pathological results showed that the demyelination occurred but the neuraxon survived,lymphocytes were infiltrated,glial cells were proliferated,megakaryo-cytes also could be found,and multiple monocyte-macrophages were all around the lesions.Conclusion The MRI of DPT has some characteristic features.

Objective:To investigate the effect of lncRNA HOTAIR on the radiosensitivity of glioma cells and its underlying mechanism.Methods:The negative control plasmid, HOTAIR silencing plasmid, miR-NC over expressing plasmid, miR-17-5p over expressing plasmid were transfected into U87R cells, and assigned intothe silencing control, HOTAIR silencing, miR-NC over expressing and miR-17-5 pover expressing groups. Cells in the the above groups were irradiated at a dose of 4Gy, and recorded as silencing control+ 4Gy group, HOTAIRsilencing+ 4Gy group, miR-NC over expressing+ 4Gy group and miR-17-5p over expressing+ 4Gy group. The HOTAIR silencing plasmid, miR-NC suppressing plasmid and miR-17-5p suppressing plasmid were co-transfected into U87R cells and recorded as the HOTAIR silencing+ miR-NC suppressing group and HOTAIR silencing+ miR-17-5p suppressing group. All procedures were transfected by the liposome method. The expression of miR-17-5p and HOTAIR was detected by qRT-PCR. The radio sensitivity of glioma cells was evaluated by cell clone formation assay. The cell apoptosis was assessed by flow cytometry. The fluorescence activity was assessed by dual luciferase reporter assay.Results:HOTAIR was highly expressed in the radiation-resistant glioma cells. Silencing HOTAIR and over-expressing miR-17-5p could increase the radiosensitivity of U87R cells and promote radiation-induced apoptosis of U87R cells. HOTAIR could target and regulate the miR-17-5p expression. Suppressing miR-17-5p reversed the effect of silencing HOTAIR on U87R cell sensitization and promoting radiation-induced U87R cell apoptosis.Conclusions:Silencing lncRNA HOTAIR yields radiation sensitization and promotes radiation-induced apoptosis in glioma cells. The mechanism may be related to the regulation of miR-17-5p.

Abstract：Objective To investigate the morphological features of the Pneumocystis jirovecii, in order to facilitate early detection and rapid diagnosis of this rare pathogen from a morphology point of view by laboratory technicians. By analyzing the laboratory features and application value of different pathogen detection methods in the diagnosis of Pneumocystis jirovecii pneumonia, we aim to provide the most reliable diagnostic basis for rapid diagnosis of Pneumocystis jirovecii pneumonia.Methods A retrospective analysis was conducted on the test results of bronchoalveolar lavage fluid samples from a comprehensive hospital in Zhangqiu District, Jinan City, Shandong Province, and a hospital in Changde City from April 2022 to October 2022. Five confirmed cases of Pneumocystis jirovecii pneumonia were detected. Its clinical manifestations, laboratory results, and morphological characteristics of pathogens under different stains were analyzed to discuss the advantages and disadvantages of different detection methods. Results Cytological examination of bronchoalveolar lavage fluid found the trophozoites and cysts of Pneumocystis jirovecii by Wright's-Giemsa staining in 4 cases (80%), and the cysts of Pneumocystis jirovecii by Silver hexamine staining in 4 cases (80%), while the metagenomic next-generation sequencing confirmed all the 5 positive results. All 5 patients had different degrees of reduction in the absolute count of peripheral blood lymphocytes, and the serum lactic dehydrogenase and (1-3)-β-D-Glucan were increased. Among the 5 patients in this study, 4 were treated with sulfamethoxazole combined with caspofungin, and 1 was treated with sulfamethoxazole. Three patients were cured and discharged from hospital after treatment, but two died. Conclusions The method of Wright's-Giemsa staining for the cytological examination of bronchoalveolar lavage fluid to find Pneumocystis jirovecii has the unique and irreplaceable advantages as silver staining. Metagenomic next-generation sequencing can further increase the positive detection rate of Pneumocystis jirovecii. The combination of cytological examination of bronchoalveolar lavage fluid with metagenomic nextgeneration sequencing is a powerful diagnostic method for rapid diagnosis of Pneumocystis jirovecii pneumonia, which can diagnose accurately and reduce missed diagnosis.

Objective To investigate the feasibility,safety and efficiency of the establishment of model for Budd-Chiari syndrome with hepatic vein obstruction through endovascular technology in canine.Methods Twenty four dogs were randomly divided into experimental group (n=18) and control group (n=6).Under the surveillance of digital subtraction angiography,the balloon catheter was sent to the target hepatic vein via right external jugular vein,and then the balloon was filled by contrast agent until the target hepatic vein was blocked completely.In the experimental group,3～5 ml the mixture of N butyl-cyanoacrylate and lipiodol was infused into the target hepatic vein through the end hole of the balloon catheter until the hepatic vein flow stasis was achieved.In the control group,equal volume of normal saline was injected.The changes of liver function,portal vein pressure were measured and pathological varieties of target hepatic vein as well as the liver parenchyma were observed in the different periods in the two groups.Results The successful rate of the technique was 100 percent.There were no serious complications such as pulmonary embolism and death in the two groups.In the experimental group,the serum levels of alanine transpeptidase were (52.5 ± 12.5)U/L,(61.3±5.7)U/L,(38.6±9.4)U/L,which were higher than those in control group(P＜0.05) and prealbuminwere (0.18±0.04)g/L,(0.22±0.02)g/L,(0.19±0.06)g/L,which were lower than those in control group(P＜0.05) in the fourth,sixth and eighth weeks after the procedure,respectively.A common trunk formed by the middle and left hepatic veins which was looked as the targetic hepatic vein were completely occluded.the color of the liver appeared light red,dark red and dull black in the fourth,sixth and eighth weeks after the procedure,respectively.However,the hepatic veins were patented in the control group.In experimental group,histopathological observation revealed hepatic cells congestion and edema while a lot of inflammatory cells were seen in the wall of hepatic vein in the fourth week,the hepatic cells changed with severe edema,adipose kind,inner and middle membranes became thicker in the sixth week,and part of the hepatic cells showed hydropic degeneration,besides,inner and middle membrane became more thicker,there was substantially proliferation in elastic fiber hyperplasia in the eighth week.Conclusion Endovascular technology was a safely and effectively way to establish the canine model of Budd-Chiari syndrome with hepatic vein obstruction.