1.T Cell Receptor Signaling Pathways:New Targets for Herpes Simplex Virus
Youjia CAO ; Yapeng LI ; Yingchi ZHANG ; Cuizhu ZHANG
Virologica Sinica 2008;23(6):429-437
Herpes simplex viruses (HSV-1 and HSV-2) cause global morbidity and synergistically correlate with HIV infection.HSV exists life-long in a latent form in sensory neurons with intermittent reactivation,in despite of host immune surveillance.While abundant evidence for HSV interfering with innate immune responses so as to favor the replication and propagation of the virus,several lines of evidence declare that HSV attenuates adaptive immunity by various mechanisms,including but not limited to the ablation of antigen presentation,induction of apoptosis,and interruption of cellular signaling.In this review,we will focus on the perturbative role of HSV in Tcells signaling.
2.Development and Application of the Hospital Infectious Objective Mornitoring Sofeware on HIS
Chunmei TIAN ; Youjia DANG ; Huiling XU ; Zhi LI ; Shuangzhou JIN ; Liping JI ; Junling CAO
Chinese Journal of Nosocomiology 2009;0(13):-
OBJECTIVE To explore a target mornitoring method for hospital infection control based on web. METHODS According to hospital information system(HIS),using the database oracle 10.0 and progamming tools powerbiuld 9.0,based on inserted catheter and project,the objective mornitoring sofeware of hospital infection were explored and developed. The real-time mornitoring system was established for the important departments and projects of the Hospital infection. RESULTS By using HIS for sharing data and extracting useful data from the database and the main line of inquiry,the results of automatic statistics.The print function was convenient for extracting the basic materials of the subjiects under monitoring and helpful to supervise actively. The export capabilities could facilitate further analysis of data processing. CONCLUSIONS The mornitoring of the HIS flow is improved,A bridge were set up between infectious mornitoring and the clinic department. We can get a complete basic information,a comprehensive monitoring object and realize the standardization of information,aquire data easy and accurate,determine the dynamic observation in a timely manner. the humanpower and material resources have been saved.
3.Graeb score predicts the outcome of high-grade aneurysmal subarachnoid hemorrhage patients with intraventricular hemorrhage
Guofeng ZHANG ; Rui LIANG ; Hui LIU ; Xinyong ZHANG ; Zhi CAO ; Weibing LIU ; Youjia TANG
International Journal of Cerebrovascular Diseases 2021;29(7):507-513
Objective:To investigate the predictive value of Graeb score for the outcome of high-grade aneurysmal subarachnoid hemorrhage (aSAH) patients with intraventricular hemorrhage (IVH).Methods:Consecutive high-grade aSAH patients with IVH admitted to the No. 1 People's Hospital of Jiujiang from January 2012 to March 2020 were enrolled retrospectively. High-grade aSAH was defined as grade Ⅳ to Ⅴ according to the World Federation of Neurological Surgeons (WFNS) scale. The outcome of patients was evaluated by the modified Rankin Scale (mRS) at 3 months after discharge. A score of ≤2 was defined as a good outcome and a score of >2 were defined as a poor outcome. Multivariate logistic regression model was used to evaluate the correlation between Graeb score and clinical outcome, and the receiver operating characteristic (ROC) curve was used to determine the predictive value of Graeb score for clinical outcome. Results:A total of 86 high-grade aSAH patients with IVH were enrolled. Aneurysm treatment: craniotomy clipping in 42 patients (48.8%), intravascular embolization in 21 (24.4%), and conservative treatment in 23 (26.7%). Twenty-nine patients (33.7%) had a good outcome and 57 (66.3%) had a poor outcome. Multivariate logistic regression analysis showed that the Graeb score >6 (odds ratio [ OR] 26.360, 95% confidence interval [ CI] 4.106-169.235; P<0.001), the modified Fisher grade 3-4 ( OR 11.674, 95% CI 1.540-88.512; P=0.017) and complicated with chronic hydrocephalus ( OR 21.236, 95% CI 2.883-156.431; P=0.003) were the independent risk factors for the poor outcome. ROC curve analysis showed that the area under the curve of the Graeb score predicting for poor outcome was 0.843 (95% CI 0.760-0.926; P<0.001), the best cut-off value was 6.5, and the corresponding sensitivity and specificity were 71.9% and 86.2%, respectively. Conclusion:The Graeb score is an independent influencing factor affecting the clinical outcome of high-grade aSAH patients with IVH. Graeb score >6.5 had higher predictive value for the poor outcome in such patients.
4. Iron accumulation induces osteoporosis by disrupting Wnt signaling pathway
Guangfei LI ; Hui ZHANG ; Aifei WANG ; Zihou CAO ; Yan GAO ; Youjia XU
Chinese Journal of Endocrinology and Metabolism 2019;35(12):1061-1064
The specimens of femur from wild-type mice(WT) of 6 months and Hepcidin-knockout(KO) mice of 6 months(iron accumulation model) were obtained for Micro-CT examination. Western blot and co-immunoprecipitation were used to detect the changes of related parameters in Wnt signaling pathway. Compared with wild-type mice, the bone mass in Hepcidin-KO mice was significantly decreased, the binding of β-catenin to FOXO3a increased, and binding of β-catenin to TCF4/TCF7L2 decreased in bone tissue, without significant changes in the expression of β-catenin, TCF4/TCF7L2, and FOXO3a. These results suggest that iron accumulation may affect bone formation through interfering with canonical Wnt/β-catenin signaling pathway, finally leading to osteoporosis.
5.Bibliometrics and visualized analysis of research hotspots and current status in clinical management of osteoporotic fractures
Ruizhi ZHANG ; Junjie LI ; Peng JIA ; Qiaocheng ZHAI ; Aifei WANG ; Baoshan LIU ; Zihou CAO ; Keyu ZHU ; Youjia XU
Chinese Journal of Endocrinology and Metabolism 2023;39(2):130-140
Objective:Based on Web of Science database, this study aimed to explore the current status, research hotspots and development trends of countries regarding clinical management of osteoporotic fractures using bibliometrics and visualized analysis.Methods:We collected literatures in the field of clinical management of osteoporotic fractures included in Web of Science database, and applied bibliometrics to analyze the publication dates, countries, institutions, journals, authors, highly cited literatures and research hotspots. Visualization was drawn by VOSviewer software.Results:Analysis of the 2 508 articles revealed 3 types of data. (1) The analysis of basic information of the literature showed that: ①The country with the largest number of publications was the United States, which published 672 articles, followed by the United Kingdom and Canada, and China ranked fourth; ②The top three authors in the number of publications were Kanis JA, Cooper C and McCloskey EV respectively; ③The institution with the highest number of publications was the University of Sheffield, UK, followed by the University of Southampton, UK and the University of Toronto, Canada. (2) Network visualization of highly cited literatures showed that 118 highly cited literatures were mainly divided into 5 clusters, which were related to osteoporotic fracture diagnosis, treatment, medication adherence, management consensus and strategies of preventing refracture. (3) Temporal overlay visualization of research hotspots showed that early research mainly focused on traditional therapeutic drugs, and current research hotspots were mainly molecular targeted drugs, trabecular bone score and fracture liaison services.Conclusion:This study shows that the research activity of clinical management of osteoporotic fractures is increasing worldwide, and there is still a huge gap between China and Europe or the United States. Current research hotspots and development trends mainly focus on molecular targeted drugs, osteoporotic fracture treatment concepts, emerging fracture risk assessment tools, and fracture prevention and management models.
6.Influencing factors for prognoses of high-grade aneurysmal subarachnoid hemorrhage
Guofeng ZHANG ; Qiaoyun LENG ; Hui LIU ; Xinyong ZHANG ; Zhi CAO ; Weibing LIU ; Rui LIANG ; Lifu HU ; Wenqu JIANG ; Youjia TANG
Chinese Journal of Neuromedicine 2021;20(4):378-383
Objective:To investigate the influencing factors for prognoses of patients with high-grade aneurysmal subarachnoid hemorrhage (aSAH).Methods:A retrospective analysis was performed on clinical data of 104 patients with aSAH, admitted to our hospital from January 2012 to March 2010. According to the modified Rankin scale (mRS) scores 3 months after discharge, these patients were divided into good prognosis group (mRS scores≤2) and poor prognosis group (mRS scores >2). Clinical data of patients from the 2 groups were compared. Multivariate Logistic regression analysis was used to analyze the influencing factors for prognoses.Results:Forty patients (38.5%) were with good prognosis and 64 (61.5%) were with poor prognosis. As compared with patients in the poor prognosis group, patients in the good prognosis group had significantly lower proportion of patients>60 years old, and significantly lower Graeb scores, cast fourth ventricle (CFV) incidence, Fisher grading, blood glucose content, diastolic blood pressure, systolic blood pressure and mean arterial pressure, and statistically higher serum potassium content ( P<0.05). There were significant differences in treatment methods and incidence of complications between the two groups ( P<0.05). Multivariate Logistic regression analysis showed that age>60 years ( OR=13.470, 95%CI: 2.177-83.347, P=0.005), Fisher grading ( OR=6.649, 95%CI: 1.141-38.736, P=0.035), conservative treatment ( OR=6.348, 95%CI: 1.048-38.742, P=0.044), mean arterial pressure at admission ( OR=29.721, 95%CI: 3.177-278.012, P=0.003), serum potassium ( OR=5.296, 95%CI: 1.138-24.653, P=0.034), CFV ( OR=9.855, 95%CI: 1.785-51.456, P=0.008), and chronic hydrocephalus ( OR=19.298, 95%CI: 3.294-113.069, P=0.001) were influencing factors for prognoses of high-grade aSAH patients. Conclusion:Severe aSAH patients with advanced age, high Fisher grading, high mean arterial pressure, low serum potassium content, fourth ventricle casting and chronic hydrocephalus under conservative treatment are more likely to have poor prognosis.
7. Experimental study on the effect of iron accumulation on bonemass, intraosseous vessels and vascular endothelial cells in mice
Aifei WANG ; Hui ZHANG ; Yidong DING ; Zihou CAO ; Xiao WANG ; Fan YANG ; Youjia XU ; Dong ZHANG
Chinese Journal of Orthopaedics 2019;39(17):1075-1082
Objective:
To investigate the effect of endogenous iron accumulation onbone mass, intraosseous vessels and the effect of exogenous iron on endothelial cell activity.
Methods:
The mice were divided into control group (C57/BL6 mice without hepcidin knockout) and hepcidin-knockout group (10 mice in each group, 8 weeks old and weighing about 22 g). The mice in both groups were killed at the age of 16 weeks. Serum ferritin levels were measured by Enzyme-linked immunosorbent assay (ELISA), and iron accumulation in liver tissue was measured by Prussian blue staining, while femoral micro-structure was measured by micro-CT, and H-type vessel immunofluorescence staining was used to detect the number of H-vessels in bone. Cell experiments were divided into normal culture group (normal cell group) and intervention group (Fe group) with 200 μmol/L ammonium ferric citrate. Scratch test was used to detect the migration ability of vascular endothelial cells, and tube formation test was used to detect the function of vascular endothelial cells. The endothelial activity of vascular endothelial cells was detected by immunofluorescence.
Results:
The level of serum ferritin (318.30±12.53 ng/ml) in the hepcidin-knockout group was significantly higher than that in control group (109.60±4.66 ng/ml). The percentage of blue area of Prussian liver iron staining in the hepcidin-knockout group (80.80%±3.156%) was significantly higher than that in control group (20.94%±2.813%). Bone mineral density in the hepcidin-knockout group (0.044±0.002 mg/m3) was significantly higher than that in control group (0.131±0.008 mg/m3). The number of intraosseous blood vessels in the hepcidin-depleted mice (17.06%±1.060%) was significantly lower than that in control group (38.76%±4.576%). There were significant differences between the two groups in each index (