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@#In this paper, cobalt chloride was used to stimulate human umbilical vein endothelial cells (HUVEC) to establish a model of abnormal hypoxic injury, to investigate the effect of heparin-derived oligosaccharides (HDO) on glycolysis in HUVEC cells and its molecular mechanism.The experiment was divided into the control group (FBS-free DMEM medium), the model group (FBS-free DMEM medium +50 μmol/L CoCl2), and the HDO group (modeling+0.01, 0.1, 1 μmol/L HDO).Firstly, a biochemical kit was used to detect the effects of HDO on glucose uptake and lactic acid accumulation in HUVEC cells, then Western blot and qPCR were used to detect the effects of HIF-1α, GLUT-1 and LDHA gene transcription and protein expression, and finally, PI3K/Akt signaling pathway was detected.The results showed that HDO inhibited glucose uptake and lactate production, down-regulated the expression of HIF-1α, GLUT-1, and LDHA, and affected the activation of the PI3K/Akt signaling pathway.HDO could regulate the glycolysis level of HUVEC cells by inhibiting the activation of the PI3K/Akt/HIF-1α signaling axis.
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Visiting students' education is an important part of laboratory medicine continuing education. In the new era, the traditional continuing education model faces severe challenges in how to improve the clinical serviceability of grass-roots laboratories, the training quality of medical laboratory students, and the students' personal quality and professional ability. In the process of exploring the new training model for a long time, combined with the characteristics of the laboratory medicine and the needs of the visiting students, we put forward the new training concept of "tutorial system" for laboratory medicine students. The "one-to-one" model is used to teach students in accordance with their aptitude according to their aptitude for students of different levels and different cultural backgrounds and it has achieved certain success. The practice shows that the "tutorial system" for visiting laboratory medicine students can increase their belonging sense, improve the quality and level of the training, and expand the effect of continuing education.
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In recent years, more and more studies have shown that intestinal flora is critical to the development and progression of metabolic-related fatty liver disease (MAFLD). This article summarizes MAFLD-related intestinal flora and metabolites and their possible mechanisms of action in disease process. Although related intestinal flora and metabolites are expected to become new noninvasive diagnostic markers and therapeutic targets for MAFLD, their clinical application still requires more in-depth research. The development of modern high-throughput sequencing technology provides new ideas for research. The integrated analysis of multi-omics, such as genes, proteins, transcription, and metabolism, allows us to establish a comprehensive understanding of the microbial factors affecting MAFLD under the precision medicine system, so as to lay a foundation for targeted transplantation of intestinal flora and drug development for liver metabolic homeostasis.
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Objective:To investigate the effect of sodium hyaluronate on chronic periodontitis and its influence on serum hyper sensitive C-reactive protein(hs-CRP), interleukin 8(IL-8) and tumor necrosis factor-α(TNF-α).Methods:Using the random number table method, 98 patients with chronic periodontitis from March 2017 to March 2019 in Hangzhou Xixi Hospital were randomly divided into observation group (49 cases) and control group (49 cases). The control group was treated with tinidazole tablets, and the observation group was treated with sodium hyaluronate on the basis of the control group. The course of treatment was 4 weeks. The total effective rate was compared and the gingival index(GI), sulcus bleeding index (SBI), plaque index (PLI), and the levels of serum hs-CRP, IL-8, TNF-α before and 4 weeks after treatment were compared between the two groups.Results:The total effective rate of the observation group was higher than that of the control group:93.88%(46/49) vs. 71.43%(35/49), the difference was statistically significant ( χ2=8.612, P<0.05). After treatment of 4 weeks, the scores of GI, SBI and PLI in the observation group were lower than those in the control group: (1.10 ± 0.23 vs. 1.63 ± 0.36, 0.38 ± 0.10 vs.0.71 ± 0.15, 0.83 ± 0.29 vs. 1.36 ± 0.21), the differences were statistically significant ( P<0.05). After treatment of 4 weeks, the levels of hs-CRP, IL-8 and TNF-α in the observation group were lower than those in the control group: (4.53 ± 1.29) mg/L vs. (7.65 ± 1.82) mg/L, (6.17 ± 1.08) ng/L vs. (9.98 ± 1.56) ng/L, (2.27 ± 0.26) μg/L vs. (3.98 ± 0.32) μg/L, the differences were statistically significant ( P<0.05). No obvious adverse reactions occurred in the two groups. Conclusions:Sodium hyaluronate has a significant clinical effect on chronic periodontitis. It can reduce the levels of hs-CRP, IL-8, TNF-α and alleviate the inflammatory reaction.
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Objective@#To investigate the distribution of pathogenic bacteria and the risk factors of bacterial infections around dental implants.@*Methods@#From January 2017 to December 2018, 427 patients with oral implantation in Xixi Hospital were selected inthe study.According to the occurrence of bacterial infections around oral implants, the patients were divided into infection group(46 patients) and the non-infection group(381 patients). Pathogenic bacteria were isolated and identified from the bottom of gingival sulcus of infected patients.The risk factors of bacterial infection around dental implants were analyzed by multivariate logistic regression analysis.@*Results@#A total of 59 pathogenic bacteria were isolated from 46 patients with bacterial infection around dental implants, including 38 anaerobic bacteria, 17 aerobic bacteria and 4 beneficial bacteria.Univariate analysis showed that there were no statistically significant differences in sex, age, BMI and hypertension between the two groups (χ2=0.003, 3.393, 0.744, 0.200, all P>0.05). The infection group complicated with diabetes mellitus (19.57%), chronic periodontitis (30.43%), smoking (58.70%), drinking (69.57%), periimplantal alveolar bone defects (50.00%) and overloading (30.43%) were higher than those without infection (5.77%, 6.82%, 29.40%, 34.91%, 23.12%, 11.29%), there werestatistically significant differences (χ2=9.636, 24.241, 16.048, 20.793, 16.655, 13.011, all P<0.05). The results of logistic regression analysis showed that diabetes mellitus, history of chronic periodontitis, smoking, alcohol consumption, poor alveolar bone around implants and overloading were risk factors for bacterial infection around implants.@*Conclusion@#Anaerobic bacteria are the main pathogens of bacterial infection around dental implants.Infection is affected by many factors, including diabetes mellitus, history of chronic periodontitis, smoking, alcohol consumption, poor alveolar bone around implants and excessive load.
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@#Odontoma is one of the most common odontogenic tumors in the jaws, and it is widely considered as tooth hamartomas. This article reports a rare compound odontoma with 39 denticles which was checked and diagnosed radically by CBCT, and relevant literatures are reviewed.
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Objective Aiming at solving the problem of the middle-aged and old women suffering from stress urinary incontinence (SUI), which can seriously affect their physical and mental health, the numerical study on urodynamics in pelvic floor of the female urinary system is conducted. Methods According to the characteristics of interaction coupled between urine and pelvic organizations, the SUI urine dynamics model was established based on computational fluid dynamics. Thus, the stress, strain and displacement of the urine system, and the pressure or velocity distributions in the urine flow, were analyzed. Results The stress, strain and displacement of elastic structure in the urinary system fluctuated with time，which played the important role in the mechanical mechanism of SUI. Conclusions It is not only necessary but also available to apply the fluid-structure interaction model to study the urinary system of SUI, and the urodynamic simulations can provide the theoretical foundation and technological method for the prediction and assessment of SUI diseases in clinic.
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Objective To observe the effect of bronchial asthma combined with allergic rhinitis by azelastine hydrochloride nasal spray.Methods Eighty-seven cases of bronchial asthma combined with allergic rhinitis patients were divided into treatment group(45 cases)and control group (42 cases) by random number table method,both groups were given the treatment of bronchial asthma according to the guidelines for regulating,treatment group on the basis was combined with azelastine hydrochloride 1 spray per side,2times per day,for 3 months.Observe two groups of asthma symptoms within 3 months control situation,the number of antibiotics and hospitalization for acute exacerbation.Results Treatment group total effective rate,asthma control test score,number of antibiotics and due to the number of exacerbations hospitalization were superior to control group [93.33％(42/45) vs.76.19％(32/42),(23.80 ± 2.15)scores vs.(22.05 ±3.16) scores,13.3％ (6/45) vs.35.7％ (15/42),11.1％ (5/45) vs.33.3％ (14/42)] (P ＜ 0.05 or ＜ 0.01).Conclusion Combined by azelastine hydrochloride nasal spray may make a good control,reduce the use of antibiotics for acute attack and times of hospitalization,worthy of clinical application.
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<p><b>OBJECTIVE</b>To construct primary cultured granulosa cells model of Zi Gooses tansfected by alpha-enolase (ENO1) overexpression adenovirus vector, and to detect the effect of ENO1 overexpression of granulose cells on progesterone secretion.</p><p><b>METHODS</b>Granulosa cells were infected with Ad-CMV-ENO1 in gradient multiplicity of infection(MOI) levels:100, 250, 350 and 400 pfu/cell. Twenty four hours and 48 h after infection, green fluorescent protein (GDP) was respectively detected by fluorescence inverted microscopy. The effect of ENO1 overexpression of granulose cells on progesterone secretion was detected by the step double antibody sandwich enzyme-linked immunosorbent assay (ELISA).</p><p><b>RESULTS</b>The optimal infection rate (100%) was achieved when MOI was 800 pfu/cell,48h after infection. Real time RT-PCR and Western blot showed that the level of mRNA and protein expression ENO1 were increased significantly after infection (P < 0.01); The granulosa cells progesterone secretion of Ad-CMV-ENO1 group increased signigicantly (P < 0.01).</p><p><b>CONCLUSION</b>ENO1 overexpression could make the primary culture follicle granulosa cells in vitro improve progesterone secretion.</p>
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Female , Humans , Adenoviridae , Biomarkers, Tumor , Genetics , Cell Line , Cells, Cultured , DNA-Binding Proteins , Genetics , Genetic Vectors , Granulosa Cells , Metabolism , Green Fluorescent Proteins , Genetics , Ovarian Follicle , Cell Biology , Phosphopyruvate Hydratase , Genetics , Progesterone , Bodily Secretions , RNA, Messenger , Genetics , Transfection , Tumor Suppressor Proteins , GeneticsABSTRACT
Objective To explore the expression of glutathione hormone (GSH) and γ-glutamyl cysteine synthetase (γ-GCS) in premature newborn rats exposed to hyperoxia,and to study antioxidant role of GSH and γ-GCS in hyperoxia-induced lung injury.Methods One-day old preterm SD rats were divided randomly into 2 groups:hyperoxia group and air group.Newborn rats in hyperoxia group were continuously exposed to oxygen(oxygen ＞ 850 mL/L),and newborn rats in air group were exposed in room air.After 1,7,14 days of exposure,the preterm SD rats of 2 groups were killed,and whole lung of these rats were isolated.GSH and γ-GCS of pulmonary tissue homogenate were detected by double antibody sandwich enzyme linked immunosorbent assay (ELISA).Bicinchoninic acid (BCA) was used to detect GSH protein in lung tissue homogenate.Total lung RNA was extracted and γ-GCS mRNA was detected by reverse transcription polymerase chain reaction.Results 1.The results were detected by ELISA method and BCA method,compaired with air group,the expression of GSH protein in lung tissue induced by hyperoxia was significantly increased after 1,7 days of exposure(all P ＜ 0.05),but the expression of GSH became significantly weak after 14 days of exposure (P ＜0.05).2.The expression of γ-GCS mRNA and protein level were significantly increased in 1,7 days (all P ＜0.05),but the general tendency decreased after 14 days of exposure,the expression of γ-GCS mRNA became stronger than its expression after 14 days of air group,both were no significantly different(P ＞0.05).Conclusions The changes of GSH and γ-GCS in the lung of premature SD rats induced by oxidation outbreak participate in the development of hyperoxia-induced lung injury,the activity of γ-GCS may be increased by hyperoxia,and alleviate hyperoxia lung injury in premature rats through antioxidation of GSH.
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<p><b>OBJECTIVE</b>Myocardial edema plays an important role in the development of myocardial no-reflow and reperfusion injury after the revascularization of acute myocardial infarction (AMI). The present study investigated whether the effect of ischemic preconditioning (IPC) against myocardial no-reflow and reperfusion injury was related to the reduction of myocardial edema through the protein kinase A (PKA) pathway.</p><p><b>METHODS</b>Twenty-four minipigs were randomized into sham, AMI, IPC, and IPC + H-89 (PKA inhibitor, 1.0 µg · kg(-1) · min(-1)) groups. The area of no-reflow (ANR), area of necrosis (AN), and water content in left ventricle and ischemic-myocardium and non-ischemic area were determined by pathological studies. Microvascular permeability was determined by FITC-labeled dextran staining. Cardiomyocyte cross-sectional area (CSA) and mitochondria cross-sectional area (MSA) were evaluated by histological analysis. Myocardial expression of aquaporins (AQPs) was detected by Western blot.</p><p><b>RESULTS</b>Compared with the MI group, the sizes of no-reflow and infarct were reduced by 31.9% and 46.6% in the IPC group (all P < 0.01), water content was decreased by 5.7% and 4.6% in the reflow and no-reflow myocardium of the IPC group (all P < 0.05), microvascular permeability and cardiomyocytes swelling in the reflow area were inhibited by 29.8% and 21.3% in the IPC group (all P < 0.01), mitochondrial water accumulation in the reflow and no-reflow areas of the IPC group were suppressed by 45.5% and 34.8% respectively (all P < 0.01), and the expression of aquaporin-4, -8, and -9 in the reflow and no-reflow myocardium were blocked in the IPC group. However, these beneficial effects of IPC were partially abolished in the IPC + H-89 group.</p><p><b>CONCLUSIONS</b>The cardioprotective effects of IPC against no-reflow and reperfusion injury is partly related to the reduction of myocardial edema by inhibition of microvascular permeability and aquaporins up-regulation via PKA pathway.</p>
Subject(s)
Animals , Aquaporins , Metabolism , Capillary Permeability , Cyclic AMP-Dependent Protein Kinases , Metabolism , Edema , Metabolism , Pathology , Ischemic Preconditioning , Myocardial Infarction , Metabolism , Pathology , Myocardial Reperfusion Injury , Metabolism , Pathology , Myocardium , Metabolism , Pathology , Swine , Swine, MiniatureABSTRACT
<p><b>OBJECTIVE</b>To investigate the expression and clinical significance of mismatch repair genes hMLH1 and hMSH2 in sporadic colorectal carcinoma tissues.</p><p><b>METHODS</b>The expression of hMLH1 and hMSH2 proteins was detected in the 63 sporadic colorectal carcinoma samples by immunohistochemical staining, including tumor tissue, adjacent tissue at 3 cm from the carcinoma, and normal tissue at 10 cm away from the tumor.</p><p><b>RESULTS</b>The positive rate of hMLH1 protein expression in the 63 normal colorectal tissues, adjacent tissues and sporadic colorectal carcinoma tissues was 95.2%, 85.7% and 81.0%, respectively. The positive rate of hMLH1 protein expression was significantly lower in the tumor than in normal colorectal tissues (P < 0.05). The positive rate of hMSH2 protein in the 63 normal colorectal tissues, adjacent tissues and sporadic colorectal carcinoma tissues were 76.2%, 66.7% and 52.4%, respectively. The positive rate of hMSH2 protein expression was significantly lower in the tumor than in normal colorectal tissues (P < 0.01). The positive rate of hMLH1 protein expression was significantly higher in the tumor tissue of patients aged younger than 60 years (100%) than that in patients ≥ 60 years (75.0%, P < 0.05). The positive rate of hMLH1 protein expression in the tumor tissue accompanied by lymphatic metastasis was 50.0%, significantly lower than that (93.3%) in tumors without lymphatic metastasis (P < 0.05). The positive rate of hMSH2 protein expression in the tumor tissue of patients aged younger than 60 years was 80.0%, significantly higher than that (43.8%) in the cases ≥ 60 years (P < 0.05). The positive rate of hMSH2 protein expression in the tumor tissues with invasion reaching to the intestinal serosa (61.5%) was significantly higher than that (37.5%) in the tumors invading to submucosa or muscular layer (P < 0.05). There was a positive correlation between the expressions of hMLH1 and hMSH2 proteins in the sporadic colorectal carcinomas.</p><p><b>CONCLUSION</b>There is a certain loss of expression of hMLH1 and hMSH2 proteins in sporadic colorectal carcinoma, and is correlated with the age of patients, lymphatic metastasis and different depth of cancer invasion. HMLH1 and hMSH2 may be used as a useful laboratory marker in clinical judgement of occurrence and development of sporadic colorectal carcinoma.</p>
Subject(s)
Adult , Aged , Aged, 80 and over , Female , Humans , Male , Middle Aged , Adaptor Proteins, Signal Transducing , Metabolism , Adenocarcinoma , Metabolism , Pathology , Age Factors , Biomarkers, Tumor , Metabolism , Colonic Neoplasms , Metabolism , Pathology , Lymphatic Metastasis , MutL Protein Homolog 1 , MutS Homolog 2 Protein , Metabolism , Neoplasm Invasiveness , Nuclear Proteins , Metabolism , Rectal Neoplasms , Metabolism , PathologyABSTRACT
To obtain a bivalence vaccine against canine rabies virus and canine parvovirus, a chimeric rabies virus expressing canine parvovirus VP2 protein was generated by the technique of reverse genetics. It was shown that the chimeric virus designated as HEP-Flury (VP2) grew well on BHK-21 cells and the VP2 gene could still be stably expressed after ten passages on BHK-21 cells. Experiments on the mice immunized with the chimeric virus HEP-Flury (VP2) demonstrated that specific antibodies against rabies virus and canine parvovirus were induced in immunized mice after vaccination with the live chimeric virus.
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Animals , Cricetinae , Female , Mice , Capsid Proteins , Genetics , Allergy and Immunology , Cell Line , Parvovirus, Canine , Genetics , Allergy and Immunology , Rabies , Allergy and Immunology , Virology , Rabies virus , Genetics , Allergy and Immunology , Reverse Transcriptase Polymerase Chain Reaction , Viral Vaccines , Genetics , Allergy and ImmunologyABSTRACT
Metastasis and recurrence of tumors is the chief cause of death for such patients. Therefore, researches on the mechanism of its metastasis, prevention and treatment are the focal points in the field of traditional Chinese medicine (TCM) and Western medicine (WM) at present. WM practitioners' study on tumor metastasis involved its occurrence and development including every detail and process, and now it even has developed into the molecular biological field. In treatment surgical operation and radio-chemotherapy is used as the main means, but the efficacy is not too optimistic. In recent years, TCM, as part of the comprehensive therapy, has been gradually gaining attention of oncologists. Aimed at solving the difficult problems in metastasis of tumor, many TCM practitioners on the basis of syndrome differentiation have raised theories about the cause of tumor metastasis. On the basis of these theories, some TCM recipes against tumor metastasis have been developed to serve as an effective supplement to surgical operation, radio- and chemotherapy. The present article summarizes research results in recent years about the cause of formation of tumor and its metastasis by TCM and WM, so as to offer some theoretical clues to the study of tumor's metastasis.