83 results on '"Weili Han"'
Search Results
2. Association of survival with adjuvant chemotherapy in patients with stage IB gastric cancer: a multicentre, observational, cohort studyResearch in context
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Xianchun Gao, Gang Li, Jingyu Deng, Lulu Zhao, Weili Han, Nannan Zhang, Yunhe Gao, Linbin Lu, Shibo Wang, Jun Yu, Junya Yan, Gan Zhang, Rui Peng, Rupeng Zhang, Yu Fu, Fang He, Junguo Hu, Wanqing Wang, Ping Fan, Cen Si, Peng Gao, Han Liang, Huanqiu Chen, Gang Ji, Lei Shang, Qingchuan Zhao, Zhiyi Zhang, Shaoqi Yang, Zhenning Wang, Hongqing Xi, Yingtai Chen, Kaichun Wu, and Yongzhan Nie
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Adjuvant chemotherapy ,Stage IB ,Gastric cancer ,CA19-9 ,Lymphovascular invasion ,Public aspects of medicine ,RA1-1270 - Abstract
Summary: Background: Recurrence following radical resection in patients with stage IB gastric cancer (GC) is not uncommon. However, whether postoperative adjuvant chemotherapy could reduce the risk of recurrence in stage IB GC remains contentious. Methods: We collected data on 2110 consecutive patients with pathologic stage IB (T1N1M0 or T2N0M0) GC who were admitted to 8 hospitals in China from 2009 to 2018. The survival of patients who received adjuvant chemotherapy was compared with that of postoperative observation patients using propensity score matching (PSM). Two survival prediction models were constructed to estimate the predicted net survival gain attributable to adjuvant chemotherapy. Findings: Of the 2110 patients, 1344 received adjuvant chemotherapy and 766 received postoperative observation. Following the 1-to-1 matching, PSM yielded 637 matched pairs. Among matched pairs, adjuvant chemotherapy was not associated with improved survival compared with postoperative observation (OS: hazard ratio [HR], 0.72; 95% CI, 0.52–1.00; DFS: HR, 0.91; 95% CI, 0.64–1.29). Interestingly, in the subgroup analysis, reduced mortality after adjuvant chemotherapy was observed in the subgroups with elevated serum CA19-9 (HR, 0.22; 95% CI, 0.08–0.57; P = 0.001 for multiplicative interaction), positive lymphovascular invasion (HR, 0.32; 95% CI, 0.17–0.62; P
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- 2024
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3. Development and validation of serological dynamic risk score to predict outcome in gastric cancer with adjuvant chemotherapy: a multicentre, longitudinal, cohort study
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Linbin Lu, Wenzheng Fang, Jun Yu, Xianchun Gao, Xinlin Wang, Yan Pan, Weili Han, Junya Yan, Huahong Xie, Liping Yao, Jianjun Yang, Jianyong Zheng, Liu Hong, Jipeng Li, Mengbin Li, Lei Shang, Kaichun Wu, Gang Ji, and Yongzhan Nie
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gastric cancer ,gastrectomy ,adjuvant chemotherapy ,predictive model ,risk score ,risk state chains ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
BackgroundBaseline serological biomarkers have the potential to predict the benefits of adjuvant chemotherapy in patients with gastric cancer. However, the fluctuating nature of postoperative recurrence risk makes precise treatment challenging. We aimed to develop a risk score in real-time predicting outcomes for postoperative GC patients using blood chemistry tests.Materials and methodsThis was a retrospective, multicentre, longitudinal cohort study from three cancer centres in China, with a total of 2737 GC patients in the pTNM stage Ib to III. Among them, 1651 patients with at least two serological records were assigned to the training cohort. Model validation was carried out using separate testing data with area under curve (AUC). The least absolute shrinkage and selection operator (LASSO) and random forest-recursive feature elimination (RF-RFE) algorithm were used to select the parameters.ResultsThe Cox regression model derived six risk factors to construct a composite score (low-risk: 0-2 score; high risk: 3-6 score), including CEA, CA125, CA199, haemoglobin, albumin, and neutrophil to lymphocyte ratio. The risk score accurately predicted mortality in 1000-time bootstrap (AUROCs:0.658; 95% CI: 0.645, 0.670), with the highest AUROC (0.767; 95% CI: 0.743, 0.791) after 1 year since the gastrectomy. In validation dataset, the risk score had an AUROC of 0.586 (95% CI 0.544, 0.628). Furthermore, patients with high risk at 1 month derived significant clinical benefits from adjuvant chemotherapy (P for interaction
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- 2024
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4. Association of CDX2 and mucin expression with chemotherapeutic benefits in patients with stage II/III gastric cancer
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Xianchun Gao, Weili Han, Ling Chen, Hongwei Li, Fenli Zhou, Bin Bai, Junya Yan, Yong Guo, Kun Liu, Wenjiao Li, Renlong Li, Qiangqiang Yuan, Jiehao Zhang, Yuanyuan Lu, Xiaodi Zhao, Gang Ji, Mengbin Li, Qingchuan Zhao, Kaichun Wu, Zengshan Li, and Yongzhan Nie
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adjuvant chemotherapy ,CDX2 ,gastric cancer ,immunohistochemistry ,mucin ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Better predictors of patients with stage II/III gastric cancer (GC) most likely to benefit from adjuvant chemotherapy are urgently needed. This study aimed to assess the ability of CDX2 and mucin markers to predict prognosis and fluorouracil‐based adjuvant chemotherapy benefits. Methods CDX2 and mucin protein expressions were examined by immunohistochemistry and compared with survival and adjuvant chemotherapy benefits in a prospective evaluation cohort of 782 stage II/III GC patients. Then, the main findings were validated in an independent validation cohort (n = 386) and an external mRNA sequencing dataset (ACRG cohort, n = 193). Results In the evaluation cohort, CDX2, CD10, MUC2, MUC5AC, and MUC6 expressions were observed in 59.7%, 26.7%, 27.6%, 55.1%, and 57.7% of patients, respectively. However, only the expression of CDX2 was found to be associated with adjuvant chemotherapy benefits. Most importantly, CDX2‐negative patients had a poorer prognosis when treated with surgery only, while the prognosis of CDX2‐negative and CDX2‐positive patients was similar when receiving postoperative adjuvant chemotherapy. Further analysis revealed that patients with CDX2 negative tumors benefited from chemotherapy (5‐year overall survival rates: 60.0% with chemotherapy vs. 23.2% with surgery‐only, p
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- 2023
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5. Log odds of positive lymph nodes as a novel prognostic predictor for gastric cancer: a systematic review and meta-analysis
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Yiding Li, Guiling Wu, Jinqiang Liu, Yujie Zhang, Wanli Yang, Xiaoqian Wang, Lili Duan, Liaoran Niu, Junfeng Chen, Wei Zhou, Weili Han, Jing Wang, Helun Zhong, Gang Ji, Daiming Fan, and Liu Hong
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Log odds of positive lymph nodes (LODDS) ,Gastric cancer ,Prognostic predictor ,Overall survival ,Meta-analysis ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background We conducted a systematic review and meta-analysis to summarize the predictive and prognostic ability of the log odds of positive lymph nodes (LODDS) staging system and compare it with pathological N (pN) classification and the ratio-based lymph node system (rN) for the overall survival (OS) of gastric cancer (GC). Methods Through a systematic review till March 7, 2022, we identified population-based studies that reported the prognostic effects of LODDS in patients with GC. We compare the predictive effectiveness of the LODDS staging system with that of the rN and pN classification systems for the OS of GC. Results Twelve studies comprising 20,312 patients were included in this systematic review and meta-analysis. The results showed that LODDS1, LODDS2, LODDS3, and LODDS4 in GC patients were correlated with poor OS compared with LODDS0 (LODDS1 vs. LODDS0: HR = 1.62, 95% CI (1.42, 1.85); LODDS2 vs. LODDS0: HR = 2.47, 95% CI (2.02, 3.03); LODDS3 vs. LODDS0: HR = 3.15, 95% CI (2.50, 3.97); LODDS4 vs. LODDS0: HR = 4.55, 95% CI (3.29, 6.29)). Additionally, significant differences in survival were observed among patients with different LODDS classifications (all P-values were
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- 2023
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6. Rapid, Efficient, and Universally Applicable Genetic Engineering of Intestinal Organoid with a Sequential Monolayer to Three-Dimensional Strategy
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Weili Han, Guofang Lu, Sheng Zhao, Rui Wang, Haohao Zhang, Kun Liu, Yongzhan Nie, and Jiaqiang Dong
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Internal medicine ,RC31-1245 - Abstract
Genetically modified intestinal organoids are being explored as potential surrogates of immortalized cell lines and gene-engineered animals. However, genetic manipulation of intestinal organoids is time-consuming, and the efficiency is far beyond satisfactory. To ensure the yield of the genetically modified organoids, large quantity of starting materials is required, and the procedure usually takes more than 10 days. Two major obstacles that restrict the genetic delivery efficiency are the three-dimensional culture condition and that the genetic delivery is carried out in cell suspensions. In the present study, we introduce a novel highly efficient strategy for building genetically modified intestinal organoids in which genetic delivery was performed in freshly established monolayer primary intestinal epithelial cells under two-dimensional conditions and subsequentially transformed into three-dimensional organoids. The total procedure can be finished within 10 hr while displaying much higher efficiency than the traditional methods. Furthermore, this strategy allowed for the selection of transgenic cells in monolayer conditions before establishing high-purity genetically modified intestinal organoids.
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- 2024
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7. Preoperative risk factors of lymph node metastasis in clinical N0 lung adenocarcinoma of 3 cm or less in diameter
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Cheng Fang, Yangwei Xiang, and Weili Han
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Lung adenocarcinoma ,Risk factor ,Lymph node metastasis ,Lymph node dissection ,Surgery ,RD1-811 - Abstract
Abstract Background Lung adenocarcinoma is the most common subtype of non-small cell lung cancer. The surgical strategy of lymph node dissection is controversial because many more patients are diagnosed at an early stage in clinical practice. Methods We retrospectively reviewed 622 clinical N0 lung adenocarcinoma patients with 3 cm or less in tumor size who underwent lobectomy or segmentectomy combined with lymph node dissection in our hospital from January 2017 to December 2019. We performed univariate and multivariate analyses to identify preoperative risk factors of lymph node metastasis. Results Lymph node metastasis was found in 60 out of 622 patients. On univariate analysis, lymph node metastasis was linked to smoking history, preoperative CEA level, tumor size, tumor location (peripheral or central), consolidation/tumor ratio, pleural invasion, and pathologic type. However, only the preoperative CEA level, tumor size, and consolidation/tumor ratio were independent risk factors in multivariate analysis. The ROC curve showed that the cutoff value of tumor size was 1.7 cm. There was no lymph node metastasis in patients without risk factors. Conclusions The preoperative CEA level, tumor size, and consolidation/tumor ratio were independent risk factors of lymph node metastasis in clinical N0 lung adenocarcinoma with tumor size ≤ 3 cm. The lymph node metastasis rate was extremely low in clinical N0 lung adenocarcinoma patients without risk factors and lymph node dissection should be avoided in these patients to reduce surgical trauma.
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- 2022
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8. Valorization of Polysaccharides From Benincasa hispida: Physicochemical, Moisturizing, and Antioxidant Skincare Properties
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Qian Wang, Xiaoyan Yang, Changwei Zhu, Guodong Liu, Weili Han, Yujun Sun, and Lisheng Qian
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Benincasa hispida ,polysaccharide ,skincare ,moisturizing ,anti-aging ,antioxidation ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Benincasa hispida Cogn. (B. hispida) is a popular vegetable in China, and studies have been reported on B. hispida polysaccharides (BPS) preparation. However, few studies have been reported on its physicochemical and skincare properties. In this study, we analyzed the physicochemical properties of BPS, free radical scavenging capability, moisturizing and antioxidant activities in vitro and in vivo, respectively. Our results show that BPS was an inhomogeneous acidic polysaccharide that could scavenge a variety of free radicals. Also, BPS had a good moisturizing and antioxidant capability both in vitro and in vivo. Specifically, BPS could alter some key antioxidant enzyme activities and pro-inflammatory factor levels via activating the NRF2/HO-1 pathway, thereby preventing H2O2-induced reactive oxygen species (ROS) production and apoptosis of HDF-1 cells. Our results suggest that BPS exhibited favorable moisturizing and anti-aging properties and might be an attractive candidate for the development of anti-aging skincare products.
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- 2022
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9. KRT8 Serves as a Novel Biomarker for LUAD and Promotes Metastasis and EMT via NF-κB Signaling
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Hao Chen, Xiaobin Chen, Bo Pan, Chutian Zheng, Liangjie Hong, and Weili Han
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KRT8 ,LUAD ,metastasis ,EMT ,NF-κB signaling ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Keratin 8 (KRT8) is the major component of the intermediate filament cytoskeleton and aberrant expression in multiple tumors. However, the role of KRT8 in lung adenocarcinoma (LUAD) remains unclear. In the present study, KRT8 expression was found to be upregulated along with prognosis and metastasis in LUAD. Kaplan–Meier analysis presented that the 5-year OS and DSS rates were significantly better among patients with low KRT8 expression compared to those with high expression. Correlation analysis showed that KRT8 expression was significantly associated with gender (P = 0.027), advanced T stage (P = 0.001), advanced N stage (P = 0.048), and advanced pathologic stage (P = 0.025). Univariate Cox analysis demonstrated that KRT8 was a predictor of OS [hazard ratio (HR) = 1.526; 95% confidence interval (CI) 1.141–2.040; P = 0.004] and DSS (HR = 1.625; 95% CI 1.123–2.353; P = 0.010) in the TCGA database. Importantly, downregulation of KRT8 obviously suppressed cell proliferation, cell migration, invasion, and EMT as well as induced cell apoptosis. KRT8 knockdown significantly inhibited NF-κB signaling, suggesting a potential mechanism. Overall, our results indicated that KRT8 could regulate lung carcinogenesis and may serve as a potential target for antineoplastic therapies.
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- 2022
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10. Association of systemic inflammation and body mass index with survival in patients with resectable gastric or gastroesophageal junction adenocarcinomas
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Xianchun Gao, Yanan Pan, Weili Han, Caie Hu, Chenchen Wang, Ling Chen, Yong Guo, Yupeng Shi, Yan Pan, Huahong Xie, Liping Yao, Jianjun Yang, Jianyong Zheng, Xiaohua Li, Xiaonan Liu, Liu Hong, Jipeng Li, Mengbin Li, Gang Ji, Zengshan Li, Jielai Xia, Qingchuan Zhao, Daiming Fan, Kaichun Wu, and Yongzhan Nie
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gastric cancer ,neutrophil-to-lymphocyte ratio ,body mass index ,prognosis ,systemic inflammation index ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Objective: The systemic inflammation index and body mass index (BMI) are easily accessible markers that can predict mortality. However, the prognostic value of the combined use of these two markers remains unclear. The goal of this study was therefore to evaluate the association of these markers with outcomes based on a large cohort of patients with gastric cancer. Methods A total of 2,542 consecutive patients undergoing radical surgery for gastric or gastroesophageal junction adenocarcinoma between 2009 and 2014 were included. Systemic inflammation was quantified by the preoperative neutrophil-to-lymphocyte ratio (NLR). High systemic inflammation was defined as NLR ≥ 3, and underweight was defined as BMI < 18.5 kg/m2. Results Among 2,542 patients, NLR ≥ 3 and underweight were common [627 (25%) and 349 (14%), respectively]. In the entire cohort, NLR ≥ 3 or underweight independently predicted overall survival (OS) [hazard ratio (HR): 1.236, 95% confidence interval (95% CI): 1.069–1.430; and HR: 1.600, 95% CI: 1.350–1.897, respectively] and recurrence-free survival (RFS) (HR: 1.230, 95% CI: 1.054–1.434; and HR: 1.658, 95% CI: 1.389–1.979, respectively). Patients with both NLR ≥ 3 and underweight (vs. neither) had much worse OS (HR: 2.445, 95% CI: 1.853–3.225) and RFS (HR: 2.405, 95% CI: 1.802–3.209). Furthermore, we observed similar results in subgroup analyses according to pathological stage, age, and postoperative chemotherapy. Conclusions Our results showed that preoperative elevated NLR and decreased BMI had a significant negative effect on survival. Underweight combined with severe inflammation could enhance prognostication. Taking active therapeutic measures to reduce inflammation and increase nutrition may help improve outcomes.
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- 2021
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11. Impact of donor lung colonized bacteria detected by next-generation sequencing on early post-transplant outcomes in lung transplant recipients
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Dong Liu, Ji Zhang, Bo Wu, Feng Liu, Shugao Ye, Hongmei Wang, Jian Lv, Xing Weng, Yan Chen, Weili Han, and Jingyu Chen
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Next-generation sequencing ,Donor lung ,Lung transplantation ,Colonized bacteria ,Infectious and parasitic diseases ,RC109-216 - Abstract
Abstract Background The effect of donor lung colonized bacteria on the prognosis of lung transplantation is not clear. We used the technique of next-generation sequencing (NGS) to detect the colonized bacteria from the lower respiratory tract and analyzed whether the colonized bacteria of donor lung could affect the outcomes of lung transplantation. Methods Seventeen patients who underwent lung transplantation from March 2018 to June 2018 at Wuxi People’s Hospital affiliated to Nanjing Medical University were included in this study. Twelve cases of donor lung were obtained, and 17 lung transplants were performed, including 12 single lung transplantation and 5 bilateral lung transplantation. The colonized bacteria in the lower lobe tissue of donor lung were detected by NGS, and the bacteria culture method was used to detect the bacteria in the airway secretion before and after the operation. The information of length of extracorporeal membrane oxygenation (ECMO) support, mechanical ventilation time, length of intensive care unit (ICU) stay, duration of fever and length of hospital stay were collected for prognostic analysis. Results Compared with bacterial culture methods, the positive rate by using NGS in the lungs were higher (52.9% vs 41.2%). Among the patients who were transplanted with donor lungs with detected bacteria by NGS before surgery, only one patient (1/9) developed the same bacteria after lung transplantation. Based on results of NGS and bacterial culture, there was no association between the colonized bacteria in donor lungs and the patients’ outcomes of immediate posttransplant period. Conclusion NGS showed more sensitive than bacterial culture for detection of bacteria. The colonized bacteria in different parts of the lung are inconsistent. There is no association between the colonized bacteria in donor lungs and short-term outcome of lung transplantation patients.
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- 2020
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12. Autologous pericardium used for reconstruction of left innominate vein in patient with mediastinal venous aneurysm:a case report
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Cheng Fang, Hui Pan, Zhoubin Li, Liang Ma, and Weili Han
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Mediastinal mass ,Venous aneurysm ,Pericardium ,Left innominate vein ,Case report ,Surgery ,RD1-811 - Abstract
Abstract Background Mediastinal venous aneurysm is a very rare disease and can be easily misdiagnosed. Patients are often asymptomatic while venous aneurysm of large size with adjacent structures oppressed can lead to discomfort. The surgical treatment for aneurysm of large vessels is often complex and challenging. Case presentation We reported a 52-year-old man with mediastinal mass who received operation on July 2019 in our hospital. Left innominate vein aneurysm was diagnosed during operation with superior vena cava involved. The aneurysm was resected and pericardium was taken to repair part wall of superior vena cava and reconstruct left innominate vein. The patient’s postoperative course was uneventful. Conclusions Venous aneurysm should be considered when mediastinal mass has no clear boundary with large veins or even seems to connect with them. Magnetic resonance imaging, computed tomographic angiography and invasive venography can be performed to further evaluate the mass once diagnosis of venous aneurysm was suspected. Using pericardium to repair large veins is a good choice which is safe and costless.
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- 2020
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13. Corrigendum: Tubeimoside 1 Acts as a Chemotherapeutic Synergist via Stimulating Macropinocytosis
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Xianling Gong, Ruibo Sun, Zhuowei Gao, Weili Han, Yawei Liu, Liang Zhao, Linlin Jing, Xueqing Yao, and Xuegang Sun
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tubeimoside 1 ,chemotherapeutic synergist ,macropinocytosis ,methuosis ,endocytosis ,Therapeutics. Pharmacology ,RM1-950 - Published
- 2021
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14. FETMS: Fast and Efficient Trust Management Scheme for Information-Centric Networking in Internet of Things
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Weidong Fang, Ming Xu, Chunsheng Zhu, Weili Han, Wuxiong Zhang, and Joel J. P. C. Rodrigues
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Information-centric networking (ICN) ,Internet of Things ,cyber security ,trust management ,on-off attacks ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
As an innovative networking paradigm in the Internet of Things, information-centric networking (ICN) has improved security than the traditional IP networks. However, it still faces a large number of security threats, especially those threats from internal attacks. The trust management technology is an effective approach for defending against internal attacks. In this paper, our contributions lie in our investigating the requirements of cybersecurity in ICN and analyzing the typical attack behaviors and defense schemes. Then, we propose a fast and efficient trust management scheme (FETMS) for defending against the on-off attack, which is an intelligent internal attack. The simulation results show that FETMS can efficiently detect and remove the malicious node in a short period of time; meanwhile, it can achieve lower latency and add its mobility.
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- 2019
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15. PD-L1 expression and the prognostic significance in gastric cancer: a retrospective comparison of three PD-L1 antibody clones (SP142, 28–8 and E1L3N)
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Jing Ma, Jianhui Li, Meirui Qian, Weili Han, Miaomiao Tian, Zengshan Li, Zhe Wang, Shuixiang He, and Kaichun Wu
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Programmed cell death ligand 1 ,Immunohistochemistry ,H-score ,Multiplexed immunofluorescence ,Pathology ,RB1-214 - Abstract
Abstract Background Immunohistochemistry (IHC) for programmed cell death ligand 1 (PD-L1) displays staining diversity. We compared IHC staining of PD-L1 in gastric cancer (GC) by using three commercially available antibody clones, and analyzed the correlation with the prognosis. Methods IHC using PD-L1 antibodies (clones SP142, 28–8 and E1L3N) in 315 formalin-fixed paraffin-embedded samples was qualitatively compared at the 1, 5 and 10% cut-off by two pathologists on total, tumor and immune/stromal cells. We used computer – assisted scoring to quantitatively analyze and compare the “H-score” of PD-L1 expression in 66 samples on total cells. The antibody clone SP142 was selected to investigate the infiltration of PD-L1+CD8+ T cells using automated quantitative immunofluorescence analyses (n = 50) and the prognostic significance. The prognoses were assessed by log-rank test. Results PD-L1 clones SP142 and 28–8 displayed great concordance by qualitative (κ = 0.816, 0.810 for total cells and tumor cells at the 5% cut-off) and quantitative analyses (R2 = 0.7991, 0.8187 for positive percentage and “H-score”). PD-L1 clone SP142 showed the highest positivity in immune/stromal cells staining (18.41%) compared to 28–8 (7.62%), while clone E1L3N showed poor staining in both tumor and immune/stromal cells. Clone SP142, but not 28–8 and E1L3N, predicted a worse prognosis at the 5% cut-off (p = 0.0243). Both the clone SP142 and 28–8 had high inter-pathologist correlation for tumor staining (R2 = 0.9805 and R2 = 0.9853), but a moderate correlation for stromal/immune cell staining (R2 = 0.5653 and R2 = 0.5745). Furthermore, a higher density of PD-L1+CD8+ T cells was correlated with a shorter survival time (R2 = 0.0909, p = 0.0352). Conclusions PD-L1 antibody clone SP142 was superior in cell staining, particularly in immune/stromal cell and prognosis. These findings are important for selection of PD-L1 antibody clones in the future diagnostic test.
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- 2018
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16. Re-identification of Vehicular Location-Based Metadata
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Zheng Tan, Cheng Wang, Xiaoling Fu, Jipeng Cui, Changjun Jiang, and Weili Han
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Privacy ,VLBS ,Re-identification ,Uniqueness ,Trajectories ,Technology - Abstract
Amid the flourish of various data services, the privacy problems on metadata have received sufficient attention. Generally, the identity is the most sensitive attribute in metadata as identity is the key linking all attributes together. Thus, quite a few methods, such as dummy and k-anonymity, have been applied to actual applications to protect the identity . However, we still argue that the identity is very likely to be disclosed. In this paper, we study the re-identification problem in the seemingly privacy-preserving VLBS (Vehicular Location-Based Service). We find that the trajectories of vehicles are highly unique after studying 131 millions mobility traces of taxis. More specifically, the experiments demonstrate that only four spatio-temporal points are sufficient to uniquely re-identify the vehicle, achieving an accuracy of 95.35%. This indicates that there exists a high risk of re-identification in VLBS even identity has been protected by traditional methods.
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- 2017
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17. Tubeimoside 1 Acts as a Chemotherapeutic Synergist via Stimulating Macropinocytosis
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Xianling Gong, Ruibo Sun, Zhuowei Gao, Weili Han, Yawei Liu, Liang Zhao, Linlin Jing, Xueqing Yao, and Xuegang Sun
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tubeimoside 1 ,chemotherapeutic synergist ,macropinocytosis ,methuosis ,endocytosis ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Macropinocytosis is a highly conserved endocytic process which characterizes the engulfment of extracellular fluid and its contents into cells via large, heterogeneous vacuoles known as macropinosomes. Tubeimoside-1 (TBM1) is a low toxic triterpenoid saponin extracted from a traditional Chinese herb Bolbostemma paniculatum (Maxim.). TBM1 stimulates a quick accumulation of numerous phase-lucent cytoplasmic vacuoles in multiple colorectal cancer (CRC) cell lines. These vacuoles can be termed as macropinosomes that efficiently engulf lucifer yellow. These vesicles are not overlaps with endocytic organelle tracers, such as ERTracker, LysoTracker and mitoTracker. These vacuoles induced by TBM1 partially incorporate into lysosomes. Transmission electron microscope indicates membrane ruffling to form lamellipodia. Protrusions collapse onto and then fuse back with the plasma membrane to generate these large endocytic vacuoles. Notably, TBM1 efficiently trafficks dextrans into heterotopic xenografts in vivo, thus provide consolidated evidence that the vacuolization can be mainly defined as macropinocytosis. TBM1 downregulates cell viability and increases PI-positive, but not highlighted Hoechst 33342-positive cells. TBM1 induced cell death can be ascribed as methuosis by hyperstimulation of macropinocytosis which can be compromised by amiloride derivative 5-(Nethyl-N-isopropyl). Light chain 3 II is recruited to these vesicles to stimulate macropinocytosis. The cell death and vacuoles can be significantly neutralized by chloroquine, but can not be the inhibited by 3-methyladenine. TBM1 can coordinate with 5-FU to exert toxicity reducing and efficacy enhancing effects in vivo by increasing the uptake of the latter without hepatic injury. In conclusion, TBM1 effectively induces in vitro and in vivo macropinocytosis which can traffick small molecules into CRC cells. It is an attractive drug transporter and can be harnessed as a chemotherapeutic synergist with translational potential.
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- 2018
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18. Chenodeoxycholic Acid from Bile Inhibits Influenza A Virus Replication via Blocking Nuclear Export of Viral Ribonucleoprotein Complexes
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Ling Luo, Weili Han, Jinyan Du, Xia Yang, Mubing Duan, Chenggang Xu, Zhenling Zeng, Weisan Chen, and Jianxin Chen
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chenodeoxycholic acid (CDCA) ,influenza A virus ,A549 cells ,MDCK cells ,nuclear export of viral ribonucleoprotein (vRNP) ,Organic chemistry ,QD241-441 - Abstract
Influenza A virus (IAV) infection is still a major global threat for humans, especially for the risk groups: young children and the elderly. The currently licensed antiviral drugs target viral factors and are prone to viral resistance. In recent years, a few endogenous small molecules from host, such as estradiol and omega-3 polyunsaturated fatty acid (PUFA)-derived lipid mediator protection D1 (PD1), were demonstrated to be capable of inhibiting IAV infection. Chenodeoxycholic acid (CDCA), one of the main primary bile acids, is synthesized from cholesterol in the liver and classically functions in emulsification and absorption of dietary fats. Clinically, CDCA has been used in the treatment of patients with cholesterol gallstones for more than five decades. In this study, we showed that CDCA attenuated the replication of three subtypes of influenza A virus, including a highly pathogenic H5N1 strain, in A549 and MDCK cell cultures with IC50 ranging from 5.5 to 11.5 μM. Mechanistically, CDCA effectively restrained the nuclear export of viral ribonucleoprotein (vRNP) complexes. In conclusion, as an endogenous physiological small molecule, CDCA can inhibit IAV replication in vitro, at least in part, by blocking vRNP nuclear export, and affords further studies for development as a potential antiviral agent against IAV infections.
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- 2018
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19. A Bitcoin Transaction Analyzing and Tracking Mechanism in Specified Network Zone.
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DAPENG HUANG, CHEN CHEN, HAOWEI LUO, KAI WANG, and WEILI HAN
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BITCOIN ,COMPUTER network traffic ,CRYPTOCURRENCIES ,GOVERNMENTAL investigations ,BLOCKCHAINS ,ARTIFICIAL satellite tracking - Abstract
Cryptocurrencies, such as Bitcoin, have emerged as a popular means for illicit activities due to their decentralized and anonymous nature, allowing them to circumvent governmental oversight effectively. To combat crimes associated with Bitcoin, it is crucial to address the issue of deanonymizing Bitcoin transactions. Accordingly, this paper presents a novel methodology for Bitcoin transaction traceability, based on Bitcoin network traffic analysis. Specifically, we analyze network traffic data obtained at the physical convergence point of the local Bitcoin network to trace the input address of Bitcoin transactions. The proposed scheme is tested in a distributed Bitcoin network environment, yielding a promising recall rate of 45% and precision rate of 66.67%, with the exception of nodes linked through VPN, Tor, and similar tools. This traceability mechanism holds significant practical implications for regulatory and judicial investigation departments. [ABSTRACT FROM AUTHOR]
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- 2024
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20. Efficiently answering top-k frequent term queries in temporal-categorical range
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Chengfei Liu, Lu Wang, Yinan Jing, Zhenying He, X. Sean Wang, Jianxin Li, Kai Zhang, Weili Han, and Chang Lu
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Information Systems and Management ,Range query (data structures) ,Computer science ,05 social sciences ,050301 education ,02 engineering and technology ,computer.software_genre ,Data structure ,Computer Science Applications ,Theoretical Computer Science ,Term (time) ,Reduction (complexity) ,Range (mathematics) ,Artificial Intelligence ,Control and Systems Engineering ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,Data mining ,Dimension (data warehouse) ,0503 education ,computer ,Categorical variable ,Software ,Word (computer architecture) - Abstract
In the procedure of extracting hot topics and detecting emerging topic, counting term frequency is one of the most inevitable and time-consuming steps. For the purpose of text exploration, users may change the query range frequently, and the adjustment of ranges would cause recalculation of term frequency when finding hot terms, bringing unacceptable time cost. In addition, real-time update of dimensions is also a challenge. To address these problems, we first propose a novel data structure based on prefix cube to store terms and their frequencies, so that the time for counting term frequency gets a significant reduction. Based on the data structure, we propose an efficient range query algorithm that significantly decreases the number of input word lists involved in top-k queries. Considering the underlying dimension update, we also design an efficient maintenance mechanism to cope with different dimension updates. Finally, we conduct comprehensive experiments to validate the effectiveness of the proposed structure and the efficiency of the optimized query algorithm. We also prove that using the proposed data structure, the time cost of our algorithms in hot topic extraction and emerging topic detection can be reduced by about ten times compared with the previous algorithms.
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- 2021
21. pMPL: A Robust Multi-Party Learning Framework with a Privileged Party
- Author
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Lushan Song, Jiaxuan Wang, Zhexuan Wang, Xinyu Tu, Guopeng Lin, Wenqiang Ruan, Haoqi Wu, and Weili Han
- Subjects
FOS: Computer and information sciences ,Computer Science - Cryptography and Security ,Cryptography and Security (cs.CR) - Abstract
In order to perform machine learning among multiple parties while protecting the privacy of raw data, privacy-preserving machine learning based on secure multi-party computation (MPL for short) has been a hot spot in recent. The configuration of MPL usually follows the peer-to-peer architecture, where each party has the same chance to reveal the output result. However, typical business scenarios often follow a hierarchical architecture where a powerful, usually privileged party, leads the tasks of machine learning. Only the privileged party can reveal the final model even if other assistant parties collude with each other. It is even required to avoid the abort of machine learning to ensure the scheduled deadlines and/or save used computing resources when part of assistant parties drop out. Motivated by the above scenarios, we propose pMPL, a robust MPL framework with a privileged part}. pMPL supports three-party training in the semi-honest setting. By setting alternate shares for the privileged party, pMPL is robust to tolerate one of the rest two parties dropping out during the training. With the above settings, we design a series of efficient protocols based on vector space secret sharing for pMPL to bridge the gap between vector space secret sharing and machine learning. Finally, the experimental results show that the performance of pMPL is promising when we compare it with the state-of-the-art MPL frameworks. Especially, in the LAN setting, pMPL is around $16\times$ and $5\times$ faster than TF-encrypted (with ABY3 as the back-end framework) for the linear regression, and logistic regression, respectively. Besides, the accuracy of trained models of linear regression, logistic regression, and BP neural networks can reach around 97%, 99%, and 96% on MNIST dataset respectively., This paper is the full version of a paper to appear in CCS 2022
- Published
- 2022
22. Exceeding 30 ELNs is strongly recommended for pT3‐4N0 patients with gastric cancer: A multicenter study of survival, recurrence, and prediction model
- Author
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Xianchun Gao, Gang Ji, Zhenkun Wu, Yingtai Chen, Penghui Niu, Xiaojie Zhang, Lulu Zhao, Xisheng Yang, Weili Han, Ze-Feng Li, and Dongbing Zhao
- Subjects
Adult ,Male ,Cancer Research ,medicine.medical_specialty ,Multivariate analysis ,survival outcomes ,Kaplan-Meier Estimate ,Gastroenterology ,Risk Assessment ,Clinical Research ,Stomach Neoplasms ,Internal medicine ,medicine ,Overall survival ,Humans ,Aged ,Neoplasm Staging ,business.industry ,gastric cancer ,Hazard ratio ,Cancer ,General Medicine ,Original Articles ,Nomogram ,Middle Aged ,medicine.disease ,Prognosis ,Confidence interval ,Stage migration ,prediction model ,Nomograms ,Oncology ,Multicenter study ,Lymphatic Metastasis ,Original Article ,Female ,Neoplasm Recurrence, Local ,business ,stage migration ,examined lymph nodes ,SEER Program - Abstract
The argument concerning the exact minimum number of examined lymph nodes (ELNs) has continued for a long time among various regions, and no consensus has been reached for stratified pathological T stages for data to date. Data from 4607 pN0 patients with gastric cancer were analyzed. Kaplan‐Meier analysis showed the similar overall survival (OS) outcomes among the 3 groups (ELNs ≤ 15, 16 ≤ ELNs ≤ 29 and ELNs ≥ 30, P = .171). However, the ELNs ≥ 30 group had a better disease‐free survival (DFS) outcome compared with the others (all P, The OS and DFS of the total pN0 patients in different ELNs group. (A) OS, P = .171, (B) DFS, P = .029.
- Published
- 2021
23. Understanding Offline Password-Cracking Methods: A Large-Scale Empirical Study
- Author
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Ruixin Shi, Weili Han, Yong Li, and Yongbin Zhou
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Science (General) ,Article Subject ,Computer Networks and Communications ,Computer science ,0211 other engineering and technologies ,02 engineering and technology ,Machine learning ,computer.software_genre ,Password strength ,Set (abstract data type) ,Q1-390 ,Empirical research ,020204 information systems ,0202 electrical engineering, electronic engineering, information engineering ,T1-995 ,Technology (General) ,Structure (mathematical logic) ,Password ,021110 strategic, defence & security studies ,business.industry ,Password cracking ,Plaintext ,Cracking ,ComputingMethodologies_GENERAL ,Artificial intelligence ,business ,computer ,Information Systems - Abstract
Researchers proposed several data-driven methods to efficiently guess user-chosen passwords for password strength metering or password recovery in the past decades. However, these methods are usually evaluated under ad hoc scenarios with limited data sets. Thus, this motivates us to conduct a systematic and comparative investigation with a very large-scale data corpus for such state-of-the-art cracking methods. In this paper, we present the large-scale empirical study on password-cracking methods proposed by the academic community since 2005, leveraging about 220 million plaintext passwords leaked from 12 popular websites during the past decade. Specifically, we conduct our empirical evaluation in two cracking scenarios, i.e., cracking under extensive-knowledge and limited-knowledge. The evaluation concludes that no cracking method may outperform others from all aspects in these offline scenarios. The actual cracking performance is determined by multiple factors, including the underlying model principle along with dataset attributes such as length and structure characteristics. Then, we perform further evaluation by analyzing the set of cracked passwords in each targeting dataset. We get some interesting observations that make sense of many cracking behaviors and come up with some suggestions on how to choose a more effective password-cracking method under these two offline cracking scenarios.
- Published
- 2021
24. Autologous pericardium used for reconstruction of left innominate vein in patient with mediastinal venous aneurysm:a case report
- Author
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Hui Pan, Cheng Fang, Liang Ma, Zhoubin Li, and Weili Han
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Male ,medicine.medical_specialty ,Mediastinal mass ,Computed Tomography Angiography ,Venography ,lcsh:Surgery ,030204 cardiovascular system & hematology ,Asymptomatic ,Venous aneurysm ,03 medical and health sciences ,0302 clinical medicine ,Aneurysm ,Superior vena cava ,Case report ,medicine ,Mediastinal Diseases ,Pericardium ,Humans ,030212 general & internal medicine ,cardiovascular diseases ,Brachiocephalic Veins ,medicine.diagnostic_test ,business.industry ,Magnetic resonance imaging ,General Medicine ,lcsh:RD1-811 ,Middle Aged ,medicine.disease ,Magnetic Resonance Imaging ,Left innominate vein ,Left Innominate Vein ,Surgery ,medicine.anatomical_structure ,cardiovascular system ,medicine.symptom ,business ,Rare disease - Abstract
Background Mediastinal venous aneurysm is a very rare disease and can be easily misdiagnosed. Patients are often asymptomatic while venous aneurysm of large size with adjacent structures oppressed can lead to discomfort. The surgical treatment for aneurysm of large vessels is often complex and challenging. Case presentation We reported a 52-year-old man with mediastinal mass who received operation on July 2019 in our hospital. Left innominate vein aneurysm was diagnosed during operation with superior vena cava involved. The aneurysm was resected and pericardium was taken to repair part wall of superior vena cava and reconstruct left innominate vein. The patient’s postoperative course was uneventful. Conclusions Venous aneurysm should be considered when mediastinal mass has no clear boundary with large veins or even seems to connect with them. Magnetic resonance imaging, computed tomographic angiography and invasive venography can be performed to further evaluate the mass once diagnosis of venous aneurysm was suspected. Using pericardium to repair large veins is a good choice which is safe and costless.
- Published
- 2020
25. Interleukin 1β-mediated HOXC10 Overexpression Promotes Hepatocellular Carcinoma Metastasis by Upregulating PDPK1 and VASP
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Daiming Fan, Kaichun Wu, Yunzhi Dang, Weibo Feng, Weili Han, Chenyang Qiao, Jie Chen, Limin Xia, and Yongzhan Nie
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Male ,0301 basic medicine ,Carcinoma, Hepatocellular ,interleukin-1β ,Interleukin-1beta ,Mice, Nude ,Medicine (miscellaneous) ,Metastasis ,3-Phosphoinositide-Dependent Protein Kinases ,Cohort Studies ,Mice ,03 medical and health sciences ,0302 clinical medicine ,Downregulation and upregulation ,Cell Movement ,Cell Line, Tumor ,Biomarkers, Tumor ,metastasis ,Animals ,Humans ,Medicine ,Neoplasm Metastasis ,Pharmacology, Toxicology and Pharmaceutics (miscellaneous) ,Transcription factor ,Homeodomain Proteins ,Gene knockdown ,homeobox C10 ,business.industry ,Kinase ,Liver Neoplasms ,Microfilament Proteins ,hepatocellular carcinoma ,Middle Aged ,Phosphoproteins ,medicine.disease ,digestive system diseases ,Gene Expression Regulation, Neoplastic ,030104 developmental biology ,030220 oncology & carcinogenesis ,Hepatocellular carcinoma ,Cancer research ,Immunohistochemistry ,interleukin 1 receptor type 1 ,Female ,business ,Cell Adhesion Molecules ,Chromatin immunoprecipitation ,Research Paper - Abstract
Rationale: Metastasis and recurrence are the primary reasons for the high mortality rate of human hepatocellular carcinoma (HCC) patients. However, the exact mechanism underlying HCC metastasis remains unclear. The Homeobox (HOX) family proteins, which are a highly conserved transcription factor superfamily, play important roles in cancer metastasis. Here, we report a novel role of HOXC10, one of the most upregulated HOX genes in human HCC tissues, in promoting HCC metastasis. Methods: The expression of HOXC10 and its functional targets was detected by immunohistochemistry in two independent human HCC cohorts. Luciferase reporter and chromatin immunoprecipitation assays were used to measure the transcriptional regulation of target genes by HOXC10. The effect of HOXC10-mediated invasion and metastasis were analyzed by Transwell assays and by an orthotopic metastasis model. Results: Elevated expression of HOXC10 was positively correlated with the loss of tumor encapsulation and with higher tumor-nodule-metastasis (TNM) stage and poor prognosis in human HCC. Overexpression of HOXC10 promoted HCC metastasis by upregulating metastasis-related genes, including 3-phosphoinositide-dependent protein kinase 1 (PDPK1) and vasodilator-stimulated phosphoprotein (VASP). Knockdown of PDPK1 and VASP inhibited HOXC10-enhanced HCC metastasis, whereas upregulation of PDPK1 and VASP rescued the decreased metastasis induced by HOXC10 knockdown. Interleukin-1β (IL-1β), which is the ligand of IL-1R1, upregulated HOXC10 expression through the c-Jun NH2-terminal kinase (JNK)/c-Jun pathway. HOXC10 knockdown significantly reduced IL-1β-mediated HCC metastasis. Furthermore, Anakinra, a specific antagonist of IL-1R1, inhibited IL-1β-induced HOXC10 upregulation and HCC metastasis. In human HCC tissues, HOXC10 expression was positively correlated with PDPK1, VASP and IL-1R1 expression, and patients with positive coexpression of HOXC10/PDPK1, HOXC10/VASP or IL-1R1/HOXC10 exhibited the poorest prognosis. Conclusions: Upregulated HOXC10 induced by IL-1β promotes HCC metastasis by transactivating PDPK1 and VASP expression. Thus, our study implicates HOXC10 as a prognostic biomarker, and targeting this pathway may be a promising therapeutic option for the clinical prevention of HCC metastasis.
- Published
- 2020
26. #Segments: A Dominant Factor of Password Security to Resist against Data-driven Guessing
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Chuanwang Wang, Junjie Zhang, Ming Xu, Haodong Zhang, and Weili Han
- Subjects
General Computer Science ,Law - Published
- 2022
27. Simultaneous determination of metabolic and elemental markers in methamphetamine-induced hepatic injury to rats using LC-MS/MS and ICP-MS
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Yingyi Zhang, Weili Han, Liang Li, Ande Ma, Lingyun Chen, Mei Shen, Xuemei Yang, Qi Wang, and Zhengzheng Zhou
- Subjects
Male ,Metabolite ,02 engineering and technology ,Tandem mass spectrometry ,Sensitivity and Specificity ,01 natural sciences ,Biochemistry ,Methamphetamine ,Analytical Chemistry ,Rats, Sprague-Dawley ,chemistry.chemical_compound ,Tandem Mass Spectrometry ,medicine ,Animals ,Metabolomics ,Sample preparation ,Inductively coupled plasma mass spectrometry ,Detection limit ,Chromatography ,Chemistry ,010401 analytical chemistry ,Meth ,Elements ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Liver ,Toxicity ,Central Nervous System Stimulants ,Chemical and Drug Induced Liver Injury ,0210 nano-technology ,Biomarkers ,Chromatography, Liquid ,medicine.drug - Abstract
Methamphetamine (METH) is one of the most highly addictive illicit drugs abused all over the world. Much evidence indicates that METH abuse leads to major toxicity, medical consequences, and even severe public health consequences. Existing studies usually focus on the pathomechanism of METH-induced toxicity; therefore, data on metabolites and elements correlating with particular toxicity remain scarce. The objective of the present study is to develop appropriate analytical procedures to identify the differential metabolic and elemental biomarkers on METH-induced hepatic injury to rats. The rats were administrated with METH (15 mg/mL/kg, two times per day) via intraperitoneal (i.p.) injections for four consecutive days. The alanine aminotransferase and aspartate aminotransferase activity levels of in the rat serum of the METH group increase significantly compared with those of the control group, suggesting obvious hepatic injury. The results are further confirmed by the histopathological microscopic observation. A total of 18 small molecular metabolites and 19 elements are selected to perform the simultaneous quantification based on the combination of liquid chromatography coupled with tandem mass spectrometry and inductively coupled plasma mass spectrometry. Sample preparation was optimized to cover all the analytes. Both methods are optimized and validated according to developed guidelines such as limits of detection, limits of quantification, linearity, precision, and recovery. All the obtained data are within the satisfactory range. The normalized data were processed according to the partial least squares discrimination analysis (PLS-DA) model. Five differential metabolic and six elemental markers are identified in rat plasma based on the variable importance in projection (VIP) ( 1) and t test results. Overall, the results obtained in this study demonstrate the developed methods are suitable for simultaneous determination of metabolic and elemental markers in the hepatic injury to rats induced by METH. Graphical abstract.
- Published
- 2019
28. FETMS: Fast and Efficient Trust Management Scheme for Information-Centric Networking in Internet of Things
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Weili Han, Joel J. P. C. Rodrigues, Ming Xu, Chunsheng Zhu, Wuxiong Zhang, and Weidong Fang
- Subjects
Scheme (programming language) ,General Computer Science ,Computer science ,Internet of Things ,Latency (audio) ,02 engineering and technology ,Computer security ,computer.software_genre ,01 natural sciences ,on-off attacks ,Information-centric networking ,0202 electrical engineering, electronic engineering, information engineering ,Trust management (information system) ,General Materials Science ,computer.programming_language ,Information-centric networking (ICN) ,business.industry ,Node (networking) ,cyber security ,010401 analytical chemistry ,General Engineering ,020206 networking & telecommunications ,0104 chemical sciences ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,business ,trust management ,computer ,lcsh:TK1-9971 - Abstract
As an innovative networking paradigm in the Internet of Things, information-centric networking (ICN) has improved security than the traditional IP networks. However, it still faces a large number of security threats, especially those threats from internal attacks. The trust management technology is an effective approach for defending against internal attacks. In this paper, our contributions lie in our investigating the requirements of cybersecurity in ICN and analyzing the typical attack behaviors and defense schemes. Then, we propose a fast and efficient trust management scheme (FETMS) for defending against the on-off attack, which is an intelligent internal attack. The simulation results show that FETMS can efficiently detect and remove the malicious node in a short period of time; meanwhile, it can achieve lower latency and add its mobility.
- Published
- 2019
29. Lung transplantation during the outbreak of Coronavirus disease 2019 (COVID-19) in China
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Bo Wu, Man Huang, Guohui Jiao, Chunxiao Hu, Yi Yang, Chen Jingyu, Xiaoshan Li, Gaofeng Zhao, Weili Han, Jianxing He, Lu Guo, Wenhui Chen, Gening Jiang, and Jingyu Chen
- Subjects
Male ,LAS, lung allocation score ,medicine.medical_treatment ,BMI, body mass index ,Disease ,030204 cardiovascular system & hematology ,medicine.disease_cause ,law.invention ,FiO2, fraction of inspiration O₂ ,0302 clinical medicine ,law ,Pandemic ,Coronavirus ,COVID-19, coronavirus disease 2019 ,Respiratory Distress Syndrome ,MV, mechanical ventilation ,Middle Aged ,LTx, lung transplantation ,Intensive care unit ,CT, computed tomography ,Cohort ,outcome ,Female ,ECMO ,Cardiology and Cardiovascular Medicine ,Pulmonary and Respiratory Medicine ,Adult ,medicine.medical_specialty ,China ,Tissue and Organ Procurement ,PAP, pulmonary artery pressure ,Article ,03 medical and health sciences ,medicine ,lung transplantation ,Lung transplantation ,Humans ,EF, ejection fraction ,Pandemics ,IQR, interquartile range ,Retrospective Studies ,business.industry ,Outbreak ,COVID-19 ,Length of Stay ,SOFA, sequential organ failure assessment ,Transplantation ,030228 respiratory system ,Emergency medicine ,SARS-COV-2, severe acute respiratory syndrome coronavirus 2 ,Surgery ,business ,ECMO, extracorporeal membrane oxygenation - Abstract
Objectives To illustrate our workflow for lung donation and transplantation during the COVID-19 crisis and report our preliminary experience with perioperative care. Methods We retrospectively analyzed data in the China Lung Transplantation Registration from January 23rd, 2020, to March 23rd, 2020 (2020 cohort), compared to the same period in 2019 (2019 cohort). Pre- and post-lung transplantation (LTx) management strategies, including measures aiming to prevent SARS-CoV-2 infection, were applied for all recipients, including five post-COVID-19 transplants during the COVID-19 pandemic period in China. Results Twenty-eight LTx procedures were performed, including LTx for five patients with acute respiratory distress syndrome (ARDS) due to COVID-19-related pulmonary fibrosis. Compared to the 2019 cohort, more patients with urgent conditions were transplanted in 2020, with a shorter pre-LTx admission time and early mobilization post-LTx. A large proportion (60%) of lung donations were transported on high-speed trains and commercial flights or commercial flights and highways. Grafts in the preservation containers were handed over to the receiving staff at the airport for 40% (10/25) of donations, which reduced the unnecessary quarantine of transporting staff entering the city. Listed candidates were urgently transferred to other qualified centers in 17.9% (5/28) of cases, which reduced the risk of SARS-CoV-2 exposure in COVID-19 designated hospitals. The 90-day survival rate of the recipients transplanted in 2020 was 85.7%, including 3 of 5 (60%) recipients who were critically severe COVID-19 patients. Conclusion LTx and lung donation amid COVID-19 can be performed safely with coordinated efforts on medical resource sharing and medical staff protection based on stratification of the infection risk. Outcomes were not compromised during the COVID-19 outbreak. LTx can be regarded as salvage therapy for critical COVID-19 patients with a confirmed positive-turned-negative virology status., Graphical abstract
- Published
- 2020
30. Response to Comment on 'Lung Transplantation for Elderly Patients With End-stage COVID-19 Pneumonia'
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Weili Han, Manhua Zhu, Jun Chen, and Tingbo Liang
- Subjects
Patients ,SARS-CoV-2 ,COVID-19 ,Humans ,Surgery ,Lung ,Aged ,Lung Transplantation - Published
- 2020
31. Impact of donor lung colonized bacteria detected by next-generation sequencing on early post-transplant outcomes in lung transplant recipients
- Author
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Feng Liu, Xing Weng, Weili Han, Shugao Ye, Dong Liu, Jian Lv, Hongmei Wang, Bo Wu, Yan Chen, Ji Zhang, and Jingyu Chen
- Subjects
Adult ,Male ,medicine.medical_specialty ,Microbiological culture ,medicine.medical_treatment ,030230 surgery ,Gastroenterology ,lcsh:Infectious and parasitic diseases ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Medical microbiology ,Extracorporeal Membrane Oxygenation ,law ,Internal medicine ,Extracorporeal membrane oxygenation ,medicine ,Lung transplantation ,Humans ,lcsh:RC109-216 ,Donor lung ,030212 general & internal medicine ,Lung ,Aged ,Mechanical ventilation ,Bacteria ,business.industry ,High-Throughput Nucleotide Sequencing ,Length of Stay ,Middle Aged ,respiratory system ,Prognosis ,Intensive care unit ,Respiration, Artificial ,Tissue Donors ,Transplant Recipients ,respiratory tract diseases ,Intensive Care Units ,Infectious Diseases ,medicine.anatomical_structure ,Treatment Outcome ,Colonized bacteria ,Next-generation sequencing ,Female ,business ,Research Article ,Respiratory tract ,Lung Transplantation - Abstract
Background The effect of donor lung colonized bacteria on the prognosis of lung transplantation is not clear. We used the technique of next-generation sequencing (NGS) to detect the colonized bacteria from the lower respiratory tract and analyzed whether the colonized bacteria of donor lung could affect the outcomes of lung transplantation. Methods Seventeen patients who underwent lung transplantation from March 2018 to June 2018 at Wuxi People’s Hospital affiliated to Nanjing Medical University were included in this study. Twelve cases of donor lung were obtained, and 17 lung transplants were performed, including 12 single lung transplantation and 5 bilateral lung transplantation. The colonized bacteria in the lower lobe tissue of donor lung were detected by NGS, and the bacteria culture method was used to detect the bacteria in the airway secretion before and after the operation. The information of length of extracorporeal membrane oxygenation (ECMO) support, mechanical ventilation time, length of intensive care unit (ICU) stay, duration of fever and length of hospital stay were collected for prognostic analysis. Results Compared with bacterial culture methods, the positive rate by using NGS in the lungs were higher (52.9% vs 41.2%). Among the patients who were transplanted with donor lungs with detected bacteria by NGS before surgery, only one patient (1/9) developed the same bacteria after lung transplantation. Based on results of NGS and bacterial culture, there was no association between the colonized bacteria in donor lungs and the patients’ outcomes of immediate posttransplant period. Conclusion NGS showed more sensitive than bacterial culture for detection of bacteria. The colonized bacteria in different parts of the lung are inconsistent. There is no association between the colonized bacteria in donor lungs and short-term outcome of lung transplantation patients.
- Published
- 2020
32. Impact of donor lung pathogenic bacteria detected by next-generation sequencing on early post-transplant outcomes in lung transplant recipients
- Author
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Dong Liu, Ji Zhang, Bo Wu, Feng Liu, Shugao Ye, Hongmei Wang, Jian Lv, Xing Weng, Yan Chen, Weili Han, and Jingyu Chen
- Subjects
respiratory system ,respiratory tract diseases - Abstract
Background: The effect of donor lung pathogenic bacteria on the prognosis of lung transplantation is not clear. We used the technique of next-generation sequencing (NGS) to detect the pathogenic bacteria from the lower respiratory tract and analyzed whether the colonized bacteria of donor lung could affect the outcomes of lung transplantation.Methods: All patients who underwent lung transplantation from March 2018 to June 2018 at Wuxi People's Hospital affiliated to Nanjing Medical University were included in this study. Twelve cases of donor lung were obtained, and 17 lung transplants were performed, including 12 single lung transplantation and 5 bilateral lung transplantation. The colonized bacteria in the lower lobe tissue of donor lung were detected by NGS, and the bacteria culture method was used to detect the bacteria in the airway secretion before and after the operation. The information of length of extracorporeal membrane oxygenation (ECMO) support, mechanical ventilation time, length of intensive care unit (ICU) stay, duration of fever and length of hospital stay were collected for prognostic analysis.Results: Compared with bacterial culture methods, the positive rate by using NGS in the lungs were higher (52.9% vs 41.2%). Among the patients who had detected bacteria by NGS in donor lungs before surgery, only one patient (1/9) developed the same bacteria after lung transplantation. Based on results of NGS and bacterial culture, there is no association between the colonized bacteria in donor lungs and the patient outcomes of immediate posttransplant period. Conclusion: NGS showed more sensitive than bacterial culture for detection of bacteria. The colonized bacteria in different parts of the lung are inconsistent. There is no association between the colonized bacteria in donor lungs and short-term outcome of lung transplantation patients.
- Published
- 2020
33. Combined Modality Therapy Based on Hybrid Gold Nanostars Coated with Temperature Sensitive Liposomes to Overcome Paclitaxel-Resistance in Hepatic Carcinoma
- Author
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Hongyan Zhu, Ye Gan, Xiaolan Li, Qiaofeng Li, Weili Han, Dan Zhu, Hongwei Guo, and Lanlan Shao
- Subjects
Membrane permeability ,Cell growth ,Chemistry ,paclitaxel-resistance ,Energy conversion efficiency ,Pharmaceutical Science ,02 engineering and technology ,Transfection ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Ligand (biochemistry) ,01 natural sciences ,Article ,0104 chemical sciences ,chemistry.chemical_compound ,temperature sensitive liposome ,siCOX-2 ,Paclitaxel ,Apoptosis ,Biophysics ,Combined Modality Therapy ,gold nanostars ,0210 nano-technology ,hepatic carcinoma - Abstract
In this study, we prepared gold nanostar (GNS) composite nanoparticles containing siRNA of cyclooxygenase-2(siCOX-2) that were modified by tumor targeting ligand 2-deoxyglucose (DG) and transmembrane peptide 9-poly-D-arginine (9R) to form siCOX-2(9R/DG-GNS). Paclitaxel loaded temperature sensitive liposomes (PTX-TSL) were surface-modified to produce PTX-TSL-siCOX-2(9R/DG-GNS) displaying homogeneous star-shaped structures of suitable size (293.93 nm ±, 3.21) and zeta potentials (2.47 mV ±, 0.22). PTX-TSL-siCOX-2(9R/DG-GNS) had a high thermal conversion efficiency under 808 nm laser radiation and a superior transfection efficiency, which may be related to the targeting effects of DG and increased heat induced membrane permeability. COX-2 expression in HepG2/PTX cells was significantly suppressed by PTX-TSL-siCOX-2(9R/DG-GNS) in high temperatures. The co-delivery system inhibited drug-resistant cell growth rates by &ge, 77% and increased the cell apoptosis rate about 47% at elevated temperatures. PTX-TSL and siCOX-2 loaded gold nanostar particles, therefore, show promise for overcoming tumor resistance.
- Published
- 2019
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34. A Privacy Preserving Data Aggregation Scheme to Investigate Apps Installment in Massive Mobile Devices
- Author
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Xiangru Peng, Weili Han, Chang Cao, and Tianhao Mao
- Subjects
Scheme (programming language) ,Computer science ,020206 networking & telecommunications ,02 engineering and technology ,Computer security ,computer.software_genre ,Privacy preserving ,Data aggregator ,0202 electrical engineering, electronic engineering, information engineering ,General Earth and Planetary Sciences ,Differential privacy ,020201 artificial intelligence & image processing ,Market share ,Personally identifiable information ,computer ,Mobile device ,General Environmental Science ,computer.programming_language - Abstract
Currently, mobile devices often try obtaining the list of installed applications to survey the install ratio for advertisers and app owners to evaluate the market share of their applications. However, adversaries could yet infer or even directly learn the user’s interests and personal information from his/her mobile application installations. Furthermore, this investigation, which could lead to user privacy leakage, now calls for more attention than ever before. Motivated to resolve the above issue, this paper presents a scheme to investigate the install ratio of mobile applications for app owners and advertisers while at the same time preserving the users’ privacy. The scheme is executed with one round communication between a server and mobile devices. According to experiment results, the proposed scheme can balance privacy protection and publishing the application install ratio accurately. Furthermore, the proposed scheme also satisfies differential privacy. This paper has also given the curve fitting of the amount of mobile devices and a privacy budget. It may instruct users how to choose a privacy budget for a given amount of devices to investigate.
- Published
- 2018
35. Pericyte-targeting prodrug overcomes tumor resistance to vascular disrupting agents
- Author
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Heru Chen, Jianyang Hu, Nan Ma, Chunlin Fan, Dong-Mei Zhang, Xinyi Zhang, Weili Han, Baojian Wu, Nanhui Xu, Aihua Hong, Xiaobo Li, Qiulin Nie, Changzheng Shi, Minghan Xia, Maohua Huang, Qiang Yu, Ande Ma, Liangping Luo, Xueping Lei, Wen-Cai Ye, Bin Du, Hongsheng Li, Weiqian Mai, Zhengqiu Li, and Minfeng Chen
- Subjects
0301 basic medicine ,BALB 3T3 Cells ,Angiogenesis Inhibitors ,Pharmacology ,Vinblastine ,Neovascularization ,Mice ,03 medical and health sciences ,0302 clinical medicine ,Fibroblast activation protein, alpha ,Neoplasms ,Endopeptidases ,Animals ,Humans ,Medicine ,Prodrugs ,Cytoskeleton ,A549 cell ,Neovascularization, Pathologic ,business.industry ,Serine Endopeptidases ,Membrane Proteins ,Hep G2 Cells ,General Medicine ,Prodrug ,Xenograft Model Antitumor Assays ,030104 developmental biology ,medicine.anatomical_structure ,Membrane protein ,A549 Cells ,Drug Resistance, Neoplasm ,Gelatinases ,030220 oncology & carcinogenesis ,Cancer research ,Pericyte ,medicine.symptom ,Pericytes ,business ,HeLa Cells ,Research Article ,medicine.drug - Abstract
Blood vessels in the tumor periphery have high pericyte coverage and are resistant to vascular disrupting agents (VDAs). VDA treatment resistance leads to a viable peripheral tumor rim that contributes to treatment failure and disease recurrence. Here, we provide evidence to support a hypothesis that shifting the target of VDAs from tumor vessel endothelial cells to pericytes disrupts tumor peripheral vessels and the viable rim, circumventing VDA treatment resistance. Through chemical engineering, we developed Z-GP-DAVLBH (from the tubulin-binding VDA desacetylvinblastine monohydrazide [DAVLBH]) as a prodrug that can be selectively activated by fibroblast activation protein α (FAPα) in tumor pericytes. Z-GP-DAVLBH selectively destroys the cytoskeleton of FAPα-expressing tumor pericytes, disrupting blood vessels both within the core and around the periphery of tumors. As a result, Z-GP-DAVLBH treatment eradicated the otherwise VDA-resistant tumor rim and led to complete regression of tumors in multiple lines of xenografts without producing the drug-related toxicity that is associated with similar doses of DAVLBH. This study demonstrates that targeting tumor pericytes with an FAPα-activated VDA prodrug represents a potential vascular disruption strategy in overcoming tumor resistance to VDA treatments.
- Published
- 2017
36. Socialized policy administration
- Author
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Minyue Ni, Wenyuan Xu, Xiaoyang Sean Wang, Weili Han, Zeqing Guo, Liangxing Liu, and Yunlei Zhao
- Subjects
020203 distributed computing ,021110 strategic, defence & security studies ,Social computing ,General Computer Science ,Computer science ,business.industry ,Internet privacy ,0211 other engineering and technologies ,Homomorphic encryption ,02 engineering and technology ,Permission ,Security policy ,Computer security ,computer.software_genre ,0202 electrical engineering, electronic engineering, information engineering ,Cryptosystem ,Android (operating system) ,business ,Law ,computer ,Policy-based management - Abstract
With the rapid development of mobile applications and online social networks, users often encounter a frustrating challenge to set privacy and security policies (i.e., permission requests) of various applications correctly. For instance, in an Android system, it is hard for users, even programmers, to identify malicious permission requests (policies) when they install a third-party application. To simplify the task of policy management, in this paper, we propose a novel policy administration method where the policy settings from users' friends will be used as a key recommendation to guide policy administration, and the security of friends' privacy will be protected. We propose to let a user invite his or her friends to help with policy setting in applications, and we call such a method socialized policy administration (SPA for short). We designed two types of SPA: basic SPA and composite SPA. Both types of SPA are equipped with a privacy preserving mechanism that enables users' friends to help users without leaking the friends' preferences. In our prototype based on Telegram, i.e., one of the most popular instant messaging applications, we utilize partially homomorphic encryption cryptosystems to implement our framework. Based on the performance evaluation, SPA is able to configure almost all types of policies of current popular Android applications with a modest performance overhead.
- Published
- 2017
37. Perioperative mental evaluation and intervention for lung transplantation in elderly patients with <scp>COVID</scp> ‐19
- Author
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Dandan Wang, Tingbo Liang, Shaohua Hu, Weili Han, and Hailong Lyu
- Subjects
medicine.medical_specialty ,2019-20 coronavirus outbreak ,Coronavirus disease 2019 (COVID-19) ,business.industry ,General Neuroscience ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,medicine.medical_treatment ,Clinical Neurology ,MEDLINE ,General Medicine ,Perioperative ,Psychological evaluation ,Psychiatry and Mental health ,Neurology ,Intervention (counseling) ,Emergency medicine ,Medicine ,Lung transplantation ,Neurology (clinical) ,business - Published
- 2020
38. Lung Transplantation for Elderly Patients With End-Stage COVID-19 Pneumonia
- Author
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Tong Li, Jing Zhang, Shengmei Zhu, Jun Chen, Tingbo Liang, Qiang Fang, Manhua Zhu, Weili Han, Hongliu Cai, and Guoqing Wei
- Subjects
medicine.medical_specialty ,2019-20 coronavirus outbreak ,Coronavirus disease 2019 (COVID-19) ,business.industry ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,medicine.medical_treatment ,Treatment outcome ,medicine.disease ,Pneumonia ,Internal medicine ,medicine ,Lung transplantation ,Surgery ,Stage (cooking) ,business ,Coronavirus Infections - Published
- 2020
39. LncRNA HOXA-AS3 confers cisplatin resistance by interacting with HOXA3 in non-small-cell lung carcinoma cells
- Author
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Cheng Fang, Guodong Xu, Rui Zhang, Wei Chen, Bo Pan, Zhoubin Li, Weili Han, Xiaoxia An, and Shuang Lin
- Subjects
0301 basic medicine ,Cisplatin ,Cell biology ,Cancer Research ,Messenger RNA ,Gene knockdown ,medicine.diagnostic_test ,Chemistry ,RNA ,Drug resistance ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,lcsh:RC254-282 ,Article ,Flow cytometry ,Blot ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,In vivo ,030220 oncology & carcinogenesis ,medicine ,Cancer research ,Molecular Biology ,medicine.drug - Abstract
Many studies have indicated that the aberrant expression of long noncoding RNAs (lncRNAs) is responsible for drug resistance, which represents a substantial obstacle for cancer therapy. In the present study, we aimed to investigate the role of the lncRNA HOXA-AS3 in drug resistance and elucidate its underlying mechanisms in non-small-cell lung carcinoma (NSCLC) cells. The role of HOXA-AS3 in drug resistance was demonstrated by the cell counting kit-8 assay (CCK-8), ethynyldeoxyuridine (EDU) assay, and flow cytometry analysis. Tumor xenografts in nude mice were established to evaluate the antitumor effects of HOXA-AS3 knockdown in vivo. Western blotting and quantitative real-time PCR were used to evaluate protein and RNA expression. RNA pull-down assays, mass spectrometry, and RNA immunoprecipitation were performed to confirm the molecular mechanism of HOXA-AS3 in the cisplatin resistance of NSCLC cells. We found that HOXA-AS3 levels increased with cisplatin treatment and knockdown of HOXA-AS3 enhance the efficacy of cisplatin in vitro and in vivo. Mechanistic investigations showed that HOXA-AS3 conferred cisplatin resistance by down-regulating homeobox A3 (HOXA3) expression. Moreover, HOXA-AS3 was demonstrated to interact with both the mRNA and protein forms of HOXA3. In addition, HOXA3 knockdown increased cisplatin resistance and induced epithelial-mesenchymal transition (EMT). Taken together, our findings suggested that additional research into HOXA-AS3 might provide a better understanding of the mechanisms of drug resistance and promote the development of a novel and efficient strategy to treat NSCLC.
- Published
- 2019
40. Mitochondrial superoxide anions induced by exogenous oxidative stress determine tumor cell fate: an individual cell-based study
- Author
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Zhoubin Li, Weili Han, Yong Qin, Yan Jiang, Hui Pan, Xing-guo Gong, and Bao-hui Wang
- Subjects
0301 basic medicine ,Cell ,Apoptosis ,Mitochondrion ,medicine.disease_cause ,General Biochemistry, Genetics and Molecular Biology ,Article ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Cytosol ,Superoxides ,Cell Line, Tumor ,medicine ,Humans ,Cell Lineage ,Calcium Signaling ,General Pharmacology, Toxicology and Pharmaceutics ,chemistry.chemical_classification ,Reactive oxygen species ,General Veterinary ,Endoplasmic reticulum ,General Medicine ,Glutathione ,Hydrogen Peroxide ,Cell biology ,Mitochondria ,Oxidative Stress ,030104 developmental biology ,medicine.anatomical_structure ,chemistry ,030220 oncology & carcinogenesis ,Caspases ,Calcium ,Reactive Oxygen Species ,Oxidation-Reduction ,Oxidative stress ,Signal Transduction - Abstract
Objective: Reactive oxygen species (ROS) are involved in a variety of biological phenomena and serve both deleterious and beneficial roles. ROS quantification and assessment of reaction networks are desirable but difficult because of their short half-life and high reactivity. Here, we describe a pro-oxidative model in a single human lung carcinoma SPC-A-1 cell that was created by application of extracellular H(2)O(2) stimuli. Methods: Modified microfluidics and imaging techniques were used to determine O(2) (•−) levels and construct an O(2) (•−) reaction network. To elucidate the consequences of increased O(2) (•−) input, the mitochondria were given a central role in the oxidative stress mode, by manipulating mitochondria-interrelated cytosolic Ca(2+) levels, mitochondrial Ca(2+) uptake, auto-amplification of intracellular ROS and the intrinsic apoptotic pathway. Results and conclusions: Results from a modified microchip demonstrated that 1 mmol/L H(2)O(2) induced a rapid increase in cellular O(2) (•−) levels (>27 vs. >406 amol in 20 min), leading to increased cellular oxidizing power (evaluated by ROS levels) and decreased reducing power (evaluated by glutathione (GSH) levels). In addition, we examined the dynamics of cytosolic Ca(2+) and mitochondrial Ca(2+) by confocal laser scanning microscopy and confirmed that Ca(2+) stores in the endoplasmic reticulum were the primary source of H(2)O(2)-induced cytosolic Ca(2+) bursts. It is clear that mitochondria have pivotal roles in determining how exogenous oxidative stress affects cell fate. The stress response involves the transfer of Ca(2+) signals between organelles, ROS auto-amplification, mitochondrial dysfunction, and a caspase-dependent apoptotic pathway.
- Published
- 2019
41. SOX12 promotes colorectal cancer cell proliferation and metastasis by regulating asparagine synthesis
- Author
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Meirui Qian, Kaichun Wu, Weili Han, Limin Xia, Hao Liu, Dean Tian, Feng Du, Jie Chen, Tianyu Cao, Xiaofang Yi, Yongzhan Nie, Yanhui Cai, and Daiming Fan
- Subjects
Male ,0301 basic medicine ,Cancer Research ,Asparagine synthetase ,medicine.disease_cause ,Metastasis ,Cohort Studies ,0302 clinical medicine ,Cell Movement ,Neoplasm Metastasis ,Hypoxia ,Mice, Inbred BALB C ,lcsh:Cytology ,Aspartate-Ammonia Ligase ,Prognosis ,Up-Regulation ,Gene Expression Regulation, Neoplastic ,030220 oncology & carcinogenesis ,Female ,Asparagine ,Colorectal Neoplasms ,HT29 Cells ,Transplantation, Heterologous ,Immunology ,Mice, Nude ,Biology ,Article ,SOXC Transcription Factors ,03 medical and health sciences ,Cellular and Molecular Neuroscience ,Glutaminase ,Downregulation and upregulation ,Biomarkers, Tumor ,medicine ,Animals ,Asparaginase ,Humans ,lcsh:QH573-671 ,Transaminases ,Cell Proliferation ,Cell growth ,Cancer ,Cell Biology ,HCT116 Cells ,Hypoxia-Inducible Factor 1, alpha Subunit ,medicine.disease ,digestive system diseases ,Transplantation ,030104 developmental biology ,Cancer research ,Ectopic expression ,Caco-2 Cells ,Carcinogenesis - Abstract
The sex-determining region Y (SRY)-box (SOX) family has a crucial role in carcinogenesis and cancer progression. However, the role of SOX12 and the mechanism by which it is dysregulated in colorectal cancer (CRC) remain unclear. Here we analyzed SOX12 expression patterns in two independent CRC cohorts (cohort I, n = 390; cohort II, n = 363) and found that SOX12 was significantly upregulated in CRC, indicating a poor prognosis in CRC patients. Overexpression of SOX12 promoted CRC cell proliferation and metastasis, whereas downregulation of SOX12 hampered CRC aggressiveness. Mechanistically, SOX12 facilitated asparagine synthesis by transactivating glutaminase (GLS), glutamic oxaloacetic transaminase 2 (GOT2), and asparagine synthetase (ASNS). Downregulation of GLS, GOT2, and ASNS blocked SOX12-mediated CRC cell proliferation and metastasis, whereas ectopic expression of GLS, GOT2, and ASNS attenuated the SOX12 knockdown-induced suppression of CRC progression. In addition, serial deletion, site-directed mutagenesis, luciferase reporter, and chromatin immunoprecipitation (ChIP) assays indicated that hypoxia-inducible factor 1α (HIF-1α) directly binds to the SOX12 promoter and induces SOX12 expression. Administration of l-asparaginase decreased SOX12-mediated tumor growth and metastasis. In human CRC samples, SOX12 expression positively correlated with GLS, GOT2, ASNS, and HIF-1α expression. Based on these results, SOX12 may serve as a prognostic biomarker and l-asparaginase represents a potential novel therapeutic agent for CRC.
- Published
- 2019
42. An Explainable Password Strength Meter Addon via Textual Pattern Recognition
- Author
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Ming Xu and Weili Han
- Subjects
Password ,Authentication ,Article Subject ,Cover (telecommunications) ,Computer Networks and Communications ,Computer science ,020206 networking & telecommunications ,02 engineering and technology ,Computer security ,computer.software_genre ,Password strength ,ComputingMilieux_MANAGEMENTOFCOMPUTINGANDINFORMATIONSYSTEMS ,File sharing ,Pattern recognition (psychology) ,lcsh:Technology (General) ,0202 electrical engineering, electronic engineering, information engineering ,lcsh:T1-995 ,020201 artificial intelligence & image processing ,lcsh:Science (General) ,computer ,Information Systems ,lcsh:Q1-390 - Abstract
Textual passwords are still dominating the authentication of remote file sharing and website logins, although researchers recently showed several vulnerabilities about this authentication mechanism. When a user creates or changes a password, a website usually leverages a password strength meter (PSM for short) to show the strength of the password. When the password is evaluated as a weak one, the user may replace the password with a stronger or securer one. However, the user is usually confused when the password, especially a frequently used password, is shown as a weak one. We argue that an explainable password strength meter addon, which could show the reasons of weak, may help users to more effectively create a secure password. Unfortunately, we find few sites in Alexa global top 100 showing these details. Motivated to help users with an explainable PSM, this paper proposes an addon to PSMs providing feedbacks in the form of pattern passwords explaining why a password is weak. This PSM addon can detect twelve types of patterns, which cover a very large proportion among 70 million of leaked real passwords from high-profile websites. According to our evaluation and user study, our PSM addon, which leverages textual pattern passwords, can effectively detect these popular patterns and effectively help users create securer passwords.
- Published
- 2019
43. Chenodeoxycholic Acid from Bile Inhibits Influenza A Virus Replication via Blocking Nuclear Export of Viral Ribonucleoprotein Complexes
- Author
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Jinyan Du, Chenggang Xu, Xia Yang, Mubing Duan, Ling Luo, Zhenling Zeng, Weisan Chen, Jianxin Chen, and Weili Han
- Subjects
0301 basic medicine ,chenodeoxycholic acid (CDCA) ,030106 microbiology ,Pharmaceutical Science ,Endogeny ,nuclear export of viral ribonucleoprotein (vRNP) ,medicine.disease_cause ,Chenodeoxycholic Acid ,Virus Replication ,Antiviral Agents ,Article ,Analytical Chemistry ,Madin Darby Canine Kidney Cells ,lcsh:QD241-441 ,03 medical and health sciences ,chemistry.chemical_compound ,Dogs ,lcsh:Organic chemistry ,Chenodeoxycholic acid ,Drug Discovery ,Influenza A virus ,medicine ,Animals ,Humans ,influenza A virus ,A549 cells ,Physical and Theoretical Chemistry ,Nuclear export signal ,Uncategorized ,Ribonucleoprotein ,Chemistry ,Cholesterol ,Organic Chemistry ,MDCK cells ,Virology ,Influenza A virus subtype H5N1 ,In vitro ,030104 developmental biology ,Ribonucleoproteins ,Chemistry (miscellaneous) ,Molecular Medicine - Abstract
Influenza A virus (IAV) infection is still a major global threat for humans, especially for the risk groups: young children and the elderly. The currently licensed antiviral drugs target viral factors and are prone to viral resistance. In recent years, a few endogenous small molecules from host, such as estradiol and omega-3 polyunsaturated fatty acid (PUFA)-derived lipid mediator protection D1 (PD1), were demonstrated to be capable of inhibiting IAV infection. Chenodeoxycholic acid (CDCA), one of the main primary bile acids, is synthesized from cholesterol in the liver and classically functions in emulsification and absorption of dietary fats. Clinically, CDCA has been used in the treatment of patients with cholesterol gallstones for more than five decades. In this study, we showed that CDCA attenuated the replication of three subtypes of influenza A virus, including a highly pathogenic H5N1 strain, in A549 and MDCK cell cultures with IC50 ranging from 5.5 to 11.5 &mu, M. Mechanistically, CDCA effectively restrained the nuclear export of viral ribonucleoprotein (vRNP) complexes. In conclusion, as an endogenous physiological small molecule, CDCA can inhibit IAV replication in vitro, at least in part, by blocking vRNP nuclear export, and affords further studies for development as a potential antiviral agent against IAV infections.
- Published
- 2018
- Full Text
- View/download PDF
44. PD-L1 expression and the prognostic significance in gastric cancer: a retrospective comparison of three PD-L1 antibody clones (SP142, 28–8 and E1L3N)
- Author
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Meirui Qian, Weili Han, Zhe Wang, Zengshan Li, Miaomiao Tian, Shuixiang He, Jianhui Li, Kaichun Wu, and Jing Ma
- Subjects
0301 basic medicine ,Male ,Pathology ,medicine.medical_specialty ,Histology ,Stromal cell ,H-score ,Biopsy ,Clone (cell biology) ,CD8-Positive T-Lymphocytes ,Antibodies ,B7-H1 Antigen ,Pathology and Forensic Medicine ,03 medical and health sciences ,0302 clinical medicine ,Immune system ,Lymphocytes, Tumor-Infiltrating ,Antibody Specificity ,Predictive Value of Tests ,Stomach Neoplasms ,PD-L1 ,lcsh:Pathology ,medicine ,Biomarkers, Tumor ,Humans ,Retrospective Studies ,Programmed cell death ligand 1 ,biology ,Research ,Reproducibility of Results ,General Medicine ,Middle Aged ,Prognosis ,Immunohistochemistry ,Staining ,030104 developmental biology ,Multiplexed immunofluorescence ,030220 oncology & carcinogenesis ,biology.protein ,Female ,Antibody ,CD8 ,lcsh:RB1-214 - Abstract
Background Immunohistochemistry (IHC) for programmed cell death ligand 1 (PD-L1) displays staining diversity. We compared IHC staining of PD-L1 in gastric cancer (GC) by using three commercially available antibody clones, and analyzed the correlation with the prognosis. Methods IHC using PD-L1 antibodies (clones SP142, 28–8 and E1L3N) in 315 formalin-fixed paraffin-embedded samples was qualitatively compared at the 1, 5 and 10% cut-off by two pathologists on total, tumor and immune/stromal cells. We used computer – assisted scoring to quantitatively analyze and compare the “H-score” of PD-L1 expression in 66 samples on total cells. The antibody clone SP142 was selected to investigate the infiltration of PD-L1+CD8+ T cells using automated quantitative immunofluorescence analyses (n = 50) and the prognostic significance. The prognoses were assessed by log-rank test. Results PD-L1 clones SP142 and 28–8 displayed great concordance by qualitative (κ = 0.816, 0.810 for total cells and tumor cells at the 5% cut-off) and quantitative analyses (R2 = 0.7991, 0.8187 for positive percentage and “H-score”). PD-L1 clone SP142 showed the highest positivity in immune/stromal cells staining (18.41%) compared to 28–8 (7.62%), while clone E1L3N showed poor staining in both tumor and immune/stromal cells. Clone SP142, but not 28–8 and E1L3N, predicted a worse prognosis at the 5% cut-off (p = 0.0243). Both the clone SP142 and 28–8 had high inter-pathologist correlation for tumor staining (R2 = 0.9805 and R2 = 0.9853), but a moderate correlation for stromal/immune cell staining (R2 = 0.5653 and R2 = 0.5745). Furthermore, a higher density of PD-L1+CD8+ T cells was correlated with a shorter survival time (R2 = 0.0909, p = 0.0352). Conclusions PD-L1 antibody clone SP142 was superior in cell staining, particularly in immune/stromal cell and prognosis. These findings are important for selection of PD-L1 antibody clones in the future diagnostic test. Electronic supplementary material The online version of this article (10.1186/s13000-018-0766-0) contains supplementary material, which is available to authorized users.
- Published
- 2018
45. Decentralized data access control over consortium blockchains
- Author
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Lance Warren Feagan, X. Sean Wang, Sheng Huang, Shi Chen, Yaoliang Chen, Weili Han, and Jiao Liang
- Subjects
Blockchain ,Data access control ,business.industry ,Computer science ,Data management ,Access control ,02 engineering and technology ,Encryption ,Computer security ,computer.software_genre ,Data access ,Hardware and Architecture ,020204 information systems ,Ledger ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,business ,computer ,Software ,Information Systems - Abstract
Blockchain is an emerging data management technology that enables people in a collaborative network to establish trusted connections with the other participants. Recently consortium blockchains have raised interest in a broader blockchain technology discussion. Instead of a fully public, autonomous network, consortium blockchain supports a network where participants can be limited to a subset of users and data access strictly controlled. Access control policies should be defined by the respective data owner and applied throughout the network without requiring a centralized data administrator. As a result, decentralized data access control (DDAC) emerges as a fundamental challenge for such systems. However, we show from a trust model for consortium collaborative networks that current consortium blockchain systems provide limited support for DDAC. Further, the distributed, replicated nature of blockchain makes it even more challenging to control data access, especially read access, compared with traditional DBMSes. We investigate possible strategies to protect data from being read by unauthorized users in consortium blockchain systems using combinations of ledger partitioning and encryption strategies. A general framework is proposed to help inexperienced users determine appropriate strategies under different application scenarios. The framework was implemented on top of Hyperledger Fabric to evaluate feasibility. Experimental results along with a real-world case study contrasted the performance of different strategies under various conditions and the practicality of the proposed framework.
- Published
- 2020
46. Resveratrol protects neuronal cells from isoflurane‑induced inflammation and oxidative stress‑associated death by attenuating apoptosis via Akt/p38 MAPK signaling
- Author
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Ei Yang, Weili Han, Zeng‑Li Du, Weilan Hu, and Jianxin Ye
- Subjects
0301 basic medicine ,MAPK/ERK pathway ,Cancer Research ,Chemistry ,p38 mitogen-activated protein kinases ,Inflammation ,Articles ,General Medicine ,Resveratrol ,Pharmacology ,medicine.disease_cause ,03 medical and health sciences ,chemistry.chemical_compound ,030104 developmental biology ,Immunology and Microbiology (miscellaneous) ,Apoptosis ,medicine ,Tumor necrosis factor alpha ,medicine.symptom ,Protein kinase B ,Oxidative stress - Abstract
The aim of the present study was to determine whether resveratrol protects neuronal cells from inflammation and isoflurane-induced oxidative stress-associated death via attenuating apoptosis via Akt/p38 mitogen-activated protein kinase (MAPK) signaling. The PC12 rat pheochromocytoma cell line was treated with 2% isoflurane + 21% O2 + 5% CO2 for 6 h and pre-treated with resveratrol (0–1,000 µM) for 0, 24 or 48 h prior to isoflurane treatment. An MTT assay, flow cytometry and ELISA of tumor necrosis factor-α, interleukin-6, malondialdehyde and superoxide dismutase revealed that resveratrol reduced growth inhibition, restrained apoptosis and suppressed inflammation and oxidative stress induced by isoflurane in PC12 cells. Pretreatment with resveratrol effectively reduced caspase-3 activity and inducible nitric oxide synthase protein expression in isoflurane-induced PC12 cells. In addition, western blot analysis demonstrated that resveratrol treatment significantly attenuated isoflurane-induced decreases in the activated phosphorylated (p)-Akt/Akt ratio and increases in the p-p38/p38 MAPK protein ratio in PC12 cells. These findings indicated that resveratrol was able to protect neuronal cells from isoflurane-induced inflammation and oxidative stress-associated death by attenuating apoptosis via Akt/p38 MAPK signaling.
- Published
- 2017
47. Does #like4like indeed provoke more likes?
- Author
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Minyue Ni, Yang Zhang, Jun Pang, and Weili Han
- Subjects
Computer science [C05] [Engineering, computing & technology] ,World Wide Web ,Social network ,business.industry ,020204 information systems ,0202 electrical engineering, electronic engineering, information engineering ,020201 artificial intelligence & image processing ,02 engineering and technology ,Sciences informatiques [C05] [Ingénierie, informatique & technologie] ,business ,Psychology ,Popularity - Abstract
Hashtags, created by social network users, have gained a huge popularity in recent years. As a kind of metatag for organizing information, hashtags in online social networks, especially in Instagram, have greatly facilitated users' interactions. In recent years, academia starts to use hashtags to reshape our understandings on how users interact with each other. #like4like is one of the most popular hashtags in Instagram with more than 290 million photos appended with it, when a publisher uses #like4like in one photo, it means that he will like back photos of those who like this photo. Different from other hashtags, #like4like implies an interaction between a photo's publisher and a user who likes this photo, and both of them aim to attract likes in Instagram. In this paper, we study whether #like4like indeed serves the purpose it is created for, i.e., will #like4like provoke more likes? We first perform a general analysis of #like4like with 1.8 million photos collected from Instagram, and discover that its quantity has dramatically increased by 1,300 times from 2012 to 2016. Then, we study whether #like4like will attract likes for photo publishers; results show that it is not #like4like but actually photo contents attract more likes, and the lifespan of a #like4like photo is quite limited. In the end, we study whether users who like #like4like photos will receive likes from #like4like publishers. However, results show that more than 90% of the publishers do not keep their promises, i.e., they will not like back others who like their #like4like photos; and for those who keep their promises, the photos which they like back are often randomly selected.
- Published
- 2017
48. Transcriptome analysis of Cucumis sativus infected by Cucurbit chlorotic yellows virus
- Author
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Weili Han, Zhenyue Wang, Yan Shi, Xinyan Sun, Honglian Li, and Qinsheng Gu
- Subjects
0106 biological sciences ,0301 basic medicine ,RNA-Seq ,01 natural sciences ,Transcriptome ,03 medical and health sciences ,chemistry.chemical_compound ,Crinivirus ,Biosynthesis ,Virology ,KEGG ,Gene ,Cucumber ,Phenylpropanoid ,biology ,Sequence Analysis, RNA ,Gene Expression Profiling ,Research ,biology.organism_classification ,030104 developmental biology ,Infectious Diseases ,chemistry ,Host-Pathogen Interactions ,CCYV ,Cucumis sativus ,Cucumis ,010606 plant biology & botany - Abstract
Background Cucurbit chlorotic yellows virus (CCYV) is a recently reported bipartite crinivirus that causes chlorotic leaf spots and yellowing symptoms on the leaves of cucurbit plants. The virus–host interaction of CCYV remains to be elucidated, and the influence of criniviruses on the host gene transcriptome requires analysis. Methods We used transcriptome sequencing to analyse the differentially expressed genes (DEGs) caused by CCYV infection. Results CCYV infection resulted in 865 DEGs. The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis identified 67 pathways, and the three major enrichment pathways (according to the P-values) were photosynthesis-antenna proteins (KO00196), phenylalanine metabolism (KO00360a), and phenylpropanoid biosynthesis (KO00940). Of the 13 DEGs identified in phenylalanine metabolism, 11 genes encode disease resistance-related phenylalanine ammonia-lyase (PAL) genes. Using quantitative real-time PCR, we validated the differential expression of 12 genes. Conclusions Our study based on the CCYV–cucumber interaction provides comprehensive transcriptomic information, and will improve our understanding of host–crinivirus interactions. Electronic supplementary material The online version of this article (doi:10.1186/s12985-017-0690-z) contains supplementary material, which is available to authorized users.
- Published
- 2017
49. Design and fabrication of complete dentures using CAD/CAM technology
- Author
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Ping Hu, Huanyue Liu, Yue Zhang, Yuan lv, Yanfeng Li, Weili Han, Ying Zhang, Zheng Ma, and Yi Shen
- Subjects
Fabrication ,complete dentures ,medicine.medical_treatment ,CAD ,computer.software_genre ,03 medical and health sciences ,0302 clinical medicine ,Software ,Imaging, Three-Dimensional ,Quality Improvement Study ,Medicine ,Computer Aided Design ,Humans ,Computer Simulation ,Occlusal Adjustment ,Orthodontics ,CAM ,Denture, Complete ,business.industry ,3D digital edentulous models ,Dental Models ,030206 dentistry ,General Medicine ,Models, Dental ,Computer-aided manufacturing ,milling ,Computer-Aided Design ,Feasibility Studies ,Female ,Dentures ,Mouth, Edentulous ,business ,computer ,030217 neurology & neurosurgery ,Research Article - Abstract
The aim of the study was to test the feasibility of using commercially available computer-aided design and computer-aided manufacturing (CAD/CAM) technology including 3Shape Dental System 2013 trial version, WIELAND V2.0.049 and WIELAND ZENOTEC T1 milling machine to design and fabricate complete dentures. The modeling process of full denture available in the trial version of 3Shape Dental System 2013 was used to design virtual complete dentures on the basis of 3-dimensional (3D) digital edentulous models generated from the physical models. The virtual complete dentures designed were exported to CAM software of WIELAND V2.0.049. A WIELAND ZENOTEC T1 milling machine controlled by the CAM software was used to fabricate physical dentitions and baseplates by milling acrylic resin composite plates. The physical dentitions were bonded to the corresponding baseplates to form the maxillary and mandibular complete dentures. Virtual complete dentures were successfully designed using the software through several steps including generation of 3D digital edentulous models, model analysis, arrangement of artificial teeth, trimming relief area, and occlusal adjustment. Physical dentitions and baseplates were successfully fabricated according to the designed virtual complete dentures using milling machine controlled by a CAM software. Bonding physical dentitions to the corresponding baseplates generated the final physical complete dentures. Our study demonstrated that complete dentures could be successfully designed and fabricated by using CAD/CAM.
- Published
- 2017
50. Additional file 7: Table S4. of Transcriptome analysis of Cucumis sativus infected by Cucurbit chlorotic yellows virus
- Author
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Xinyan Sun, Zhenyue Wang, Qinsheng Gu, Honglian Li, Weili Han, and Shi, Yan
- Abstract
Ten Significantly enriched pathways. (DOC 37Â kb)
- Published
- 2017
- Full Text
- View/download PDF
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