Objective To investigate the effects of divitamins notonginseng and cinnarizine capsule(DNCC) on acute cerebral ischemia.Methods ICR mice were administered three doses of DNCC(420,210,and 105mg/kg;ig.) for ten days,then the gasping time after decapitation was recorded.After three doses of DNCC(292,146,and 73mg/kg;ig.) were given respectively for ten days in rats,the effects of DNCC on the infarct size,histological changes and neurological function scores caused by focal cerebral ischemia which was induced by middle cerebral artery occlusion were investigated.Results DNCC prolonged the gasping time of mice after decapitation and improved the neurological function scores,cerebral ischemia injury and decreased the infarct size in rats.Conclusion DNCC has a protective effect against acute cerebral ischemia.

Objective: To study the expression of the proliferating c el l nuclear antigen (PCNA) and cell nuclear area in the different layers of oral d ysplasia epithelium. Methods: S-P immunohistochemical method an d morphometric technique(computer image measurement method) were used to examine the PCNA and cell nuclear area in the different layers of the normal oral epith elium(NOR) in 8 cases and abnormal oral epithelium in 46 cases including mild d ysplasia(LD), moderate dysplasia(MD), severe dysplasia(SD) and well-differentia ted squamous cell carcinoma(SCC). Results: The positive PCNA sta ining cells in normal epithelium was found mainly in the basal layer. The prolif erating index(PI) in the whole layer of abnormal oral epithelium were increased (P05). PI in the basal la yer of abnormal epithelium was higher than in NOR (P0.05). PI in the spi nosum layer and superficial layer (granulosum and lucidum layer) increased with the development of the lesions, The cell nuclear area in the basal and spinosum layer of the abnormal epithelium increased(P

Background Ostrich acellular corneal stroma possesses a similar constitution to human corneal stroma,so it is expected to become one of ideal biological corneal carriers.Objective This study was to investigate the immunogenicity of acellular stroma carrier of ostrich cornea and offer the information for the development of industrialization and clinical use of acellular stroma carrier of ostrich cornea.Methods Twenty fresh ostrich eyeballs and 20 porcine eyeballs were collected.Acellular corneal stroma carriers of ostriches and pigs were prepared using low temperature freezing joint enzyme digestion method and desiccant dehydration method and sterilized by cobalt-60 irradiation.The corneal stroma carriers were preserved using drying and dehydration method.Forty-five male BALB/c mice were randomly divided into the sham operation group,ostrich acellular corneal stroma group and porcine acellular corneal stroma group.Acellular corneal stroma carriers of ostriches and pigs(wet weight after rewatering was 10 mg/piece) were subcutaneously implanted to the back of BALB/c mice,respectively.Wound healing and inflammatory response on the operative site were observed,and phenotype and activating rate of CD4+,CD8+ and CD25+in peripheral blood of mice were dynamically detected 7,14 and 28 days after ectopically implantation of heterogeneous corneal stroma by immunofluorescence labeling and flow cytometry analysis.Results No swelling and exudation were seen in the skin of operative site of the mice with a good healing of wound after surgery.There were no significant differences in the activating rates of CD4+,CD8+ and CD25+ cells in the peripheral blood of mice among the sham operation group,the porcine acellular corneal stroma group and ostrich acellular corneal stroma group in the three time points after surgery(CD4+:F=0.74,P=0.50;F=0.39,P=0.05;F=3.46,P=0.58.CD8+:F=1.75,P=0.21 ;F=1.14,P=0.35;F=0.78,P=0.48.CD25+:F=0.52,P=0.61 ;F=3.53,P=0.62;F=2.42,P=0.13).Conclusions The ostrich acellular heterogeneous corneal stroma carrier possesses low immunogenicity.It is inferred that ostrich acellular corneal stroma carrier can be used in heterogeneous corneal transplantation.

Background Fungal corneal ulcer is a visual-threatening eye disease,and drug therapy has a limiting efficacy.Corneal transplantation or eye enucleation sometimes is necessary to the severe patients.Corneal collagen cross-linking (CXL) is an effective method for some corneal diseases,but the study on CXL for fungal corneal ulcer is lack.Objective This study was to evaluate the clinical effectiveness and safety CXL for fungal corneal ulcer.Methods Fifteen 8-week-old healthy New Zealand white rabbits were used in this study and other 5 rabbits served as normal controls.Fungal corneal ulcer models were established in the right eyes of other 10 rabbits by infecting sickle bacteria liquid after corneal scratching and removing corneal epithelium,then decellularized ostrich corneal patch covered the defected cornea.The models were randomly divided into the non-treatment group and the CXL treatment group.Corneal lesions were examined under the slit lamp microscope every day,and cornea was pictured by laser scanning confocal microscope on the 3rd,7th,14th,21st and 28th day individually after CXL.All rabbits were sacrificed and corneal tissues were obtained 4 weeks after treatment,and the collagen fiber diameter and fibrocytes were observed under the scanning electron microscope.Results Fungal corneal ulcer models were successfully established by corneal scratching and decellularized ostrich cornea covering.The gray ulcer lesions and hypbae like bean pod were seen by slit lamp microscope and laser scanning confocal microscope 3 days after modeling.Corneal ulcer deepened and expanded 1 week later,and there were a large number of spore and hyphae criss-crossing as short rod in shallow stroma.Inflammatory cells were observed in corneal endothelial cells and ocular anterior chamber.In the CXL treatment group,the range of corneal epithelial deficiency was less than that in the nontreatment group on the 3rd,7th,14th,and 21st (all at P＜ 0.05).The diameters of collagen fibers were (24.6± 1.8) nm,(24.9 ± 1.9) nm and (43.0 ± 7.4) nm in the normal control group,non-treatment group and CXL treatment group,showing a significant difference among the 3 groups (F =27.05,P =0.00),and the collagen diameters were thicker in the CXL treatment group than those in the normal control group and non-treatment group (t =5.40,-5.30,both at P＜0.05),and fibrocytes were seen among the collagen fibers.No significant difference was found in the collagen diameters between the non-treatment group and normal control group,and the fibrocytes were less in the non-treatment group.Conclusions CXL therapy can treat fungal corneal ulcer by enhancing collagen,promoting fibrocytes proliferation,suppressing fungus and inflammatory response and accelerating tissue repair.

Objective To study the changes and significance of CD4+CD25+ regulatory T cells and C-reactive protein(CRP) in patients with acute exacerbation of chronic obstructive pulmonary disease(COPD). Methods Flow cytometry was used to detect the frequency of CD4+CD25+ regulatory T cells in peripheral blood from 36 patients with acute exacerbation of COPD( COPD group) and 36 patients with clinical stability of COPD(control group one)and 36 normal individuals(control group two). The level of CRP was detected routinely. Results The ratio of CD4+CD25+ regulatory T cells number in peripheral blood of COPD group to the total number of CD4+T cell was (2.56±1.83 )%, and it was significantly decreased compared to the other two groups (P all<0.01 ). The level of CRP in COPD group was markedly higher than that in the other two groups (P all<0.01 ). The level of CD4+CD25+ regulatory T cells in patients with acute exacerbation of COPD had negative relation with CRP. Conclusions CD4+CD25+ regulatory T cells participate in inflammatory response. The proportion of CD4+CD25+ regulatory T cells decreases in patients with acute exacerbation of COPD, and it may result in maladjustment of cytoimmunity.

The suppression of spiral waves and spatiotemporal chaos in cardiac tissue was studied based on cardiac model. We proposed two strategies of suppressing spiral wave and spatiotemporal chaos. One was to elevate the extracellular potassium ion concentration suddenly. This method can effectively suppress spiral waves and spatiotemporal chaos when the elevated extracellular potassium ion concentration reaches a critical value, especially when the spiral wave pinned to defects also can be suppressed. The other was to let the extracellular potassium ion concentration varies periodically while the amplitude of concentration was limited. We found that the method could effectively suppress spiral waves and spatiotemporal chaos when the related parameters were properly chosen. But it can not suppress the pinned spiral waves. And the control mechanism is discussed in this paper.
Action Potentials ; physiology ; Arrhythmias, Cardiac ; complications ; physiopathology ; Computer Simulation ; Heart ; physiology ; Humans ; Models, Cardiovascular ; Potassium ; metabolism

Objective To select the largest non-toxic leaching solution concentration through the experimental observation of the cytotoxicity of the ostrich acellular corneal stromal leaching solution to the Chinese hamster lung fibroblasts cells(CHL) for the further chromosome distortion experiment.Methods The leaching solution made from the ostrich acellular corneal stromal material was diluted with concentrate of 1 ∶ 2,1 ∶ 4 and the original concentration were used to culture with the CHL cells,the negative and positive control were also set up at the same time,to evaluate the impact on cell growth after 24 hour by MTT colorimetric method.Results The leaching solution diluted with 1∶4 was non-toxic,and could promote the growth of the cells.Conclusion Combined with the results of classification and cell morphological features,this cytotoxicity test can be used to screen the best benchmark non-toxic concentrations for the chromosome aberration test of the CHL cells.

Objective To investigate the characteristics and significance of atypical flow cytometric immunophenotype in plasma cell myeloma.Methods Using case-control study , 48 cases with atypical immunophenotype of plasma cell myeloma and 42 cases as control group were studied by flow cytometry , the former cases were classified into three groups according to the expression of CD 38, CD138, CD19, CD56 :CD38 +/CD138 +/CD19 +/CD56 +, CD38 +/CD138 +/CD19 +/CD56 -, CD38 +/CD138 +/CD19 -/CD56 -.And compare the three groups with intracellular immunoglobulin light chain (cKappa, cLambda) , bone marrow morphology and immunofixation.The positive rate was compared with chi-square test.Results Bone marrow plasma cells showed expression of particular antigens in the following proportion of the 48 cases:CD45 29.17%, CD38 100%, CD138 100%, CD19 95.83%, CD56 43.75%, cKappa 43.75%and cLambda 56.25%.And in the three groups , the expression of monoclonal immunoglobulin were 43.75%, 52.08%and 4.17%, which bone marrow morphology and immunofixation were 57.14%,80%, 100%and 71.43%,88%,100%.The positive rate of flow cytometry , bone marrow morphology and serum immunofixation electrophoresis were 100%, 70.83% and 81.25%.While the expression of particular antigens in the control group were:CD45 47.62%, CD38 100%, CD138 100%, CD19 100%, CD56 0%, cKappa 100% and cLambda 100%.And no abnormalities were detected in bone marrow morphology and immunofixation.Conclusions Compared with the bone marrow morphology and immunofixation , multiparameter flow cytometry has more helpful to find out atypical immune phenotype of plasma cell myeloma, and differentiate malignant and benign plasma cell , contributes to the diagnosis of clinical plasma cell myeloma, prognosis and treatment monitoring.

OBJECTIVE: To investigate the relationship of the function and gene polymorphism of insulin receptor substrate (IRS) with type 2 diabetes mellitus (T2DM), and to provide a new perspective for T2DM drug development. METHODS: Relevant literatures included in CNKI, Wanfang, VIP, PubMed, SpringerLink and other databases from Jan. 1991 to Nov. 2017 were retrieved by using "Insulin receptor substrate" "Type 2 diabetes" "Insulin resistance" "Polymorphism" as Chinese keywords, and "Insulin receptor substrate" "IRS" "Type 2 diabetes" "Insulin resistance" "Polymorphism" as English keywords. The relationship of the function and gene polymorphism of IRS family with T2DM was reviewed. RESULTS & CONCLUSIONS: A total of 328 literatures were retrieved, of which there were 38 valid literatures. At present, IRS family has six members (IRS-1 to IRS-6). The dysfunction of IRS-1 and IRS-2 will lead to insulin resistance and induce T2DM. The relationship of IRS-3 and IRS-4 with T2DM remains controversial. IRS-5 and IRS-6 were newly found and their functions are not clear. The Gly972Arg mutation of IRS-1 is positively correlated with the pathogenesis of T2DM. Gly1057Asp mutation of IRS-2 combined with obesity can induce insulin resistance, but there is controversy. The mutation types of IRS family other members include Ala94Thr, Ala512Pro and Ser892Gly mutation of IRS-1, ACC, Ala157Thr and Leu647Val mutation of IRS-2. The relationship between these types of mutation and T2DM has not yet been fully supported. Multiracial and large-scale studies are required. Some achievements have been made in the present study, but the study is not yet comprehensive. Relationship of IRS family members and their mutation sites with T2DM still needs to be further tested in the expanded population.

Objective:To explore the mechanism of the active compounds in Banxia Houpo Decoction treating tension type headache through network pharmacology and molecular docking.Methods:The potentially effective components and targets of Banxia Houpo Decoction were screened by TCMSP, and the action targets of tension type headache were obtained by GeneCards, PharmGKB, TTD, Drugbank and OMIM. The intersection target of "Banxia Houpo Decoction - tension type headache" was obtained by Perl software. The protein interaction network was uploaded to STRING database and topological analysis was carried out. With the help of Cytoscape 3.8.0 software, the visualization network of "Banxia Houpo Decoction - medicine ingredient-Target-tension type headache" was constructed, and the GO enrichment analysis and KEGG pathway enrichment analysis of the intersection targets were carried out by using R 4.1.0 language and related programs. The AutoDockTools-1.5.6 software was used to complete the molecular docking analysis.Results:There were 33 intersection targets in Banxia Houpo Decoction and tension type headache. Topological attribute analysis suggested that MAPK1, TP53, ESR1, PTGS2, MYC, CYP1A2, CYP3A4 and GSTP1 might be important potential targets of Banxia Houpo Decoction in the prevention and treatment of tension type headache. GO enrichment analysis showed 516 cell biological processes (BP), 62 cell components (CC) and 149 molecular functions (MF). KEGG pathway enrichment analysis showed that there were 94 related signal pathways, such as cGMP-PKG signaling pathway, Cholinergicsynapse, Serotonergic synapse and TNF signaling pathway.Conclusions:Banxia Houpo Decoction has multi-component, multi-target and multi-pathway characteristics in the prevention and treatment of tension-type headache. It mainly acts on 5-HT synaptic pathway, TNF signal pathway, cholinergic synaptic pathway, G protein coupled receptor pathway and other pathways through ESR1, TP53, PGTS2 and other multi target.