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Zhang Q, Wang P, Shen M, Shan C. Clinical characteristics and risk factors for Klebsiella pneumoniae bloodstream infection in 152 immunocompetent patients. J Infect Dev Ctries 2024; 18:219-226. [PMID: 38484340 DOI: 10.3855/jidc.18204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 08/11/2023] [Indexed: 03/19/2024] Open
Abstract
OBJECTIVE To investigate the clinical characteristics and prognostic risk factors for Klebsiella pneumoniae bloodstream infections in immunocompetent patients. METHODS The study included patients with K. pneumoniae bloodstream infection treated in Zhongda Hospital from June 2016 to June 2021. Clinical data and antibiotic susceptibility test results were retrospectively collected and analyzed. Independent risk factors for mortality were screened using the chi-square test and multivariate logistic regression. RESULTS A total of 152 patients were included in the analysis. In our cohort, 77.6% of patients were older than 60 years, and 80.9% of them had community-acquired infections. The most common complications were type 2 diabetes, hypertension, and stroke sequelae. The proportion of patients with septic shock or abscesses was 34.9% and 25.7%, respectively. There were significant differences in the site of infection, septic shock, and serum levels of procalcitonin, hypersensitive C-reactive protein, D-dimer, creatinine, and lactic acid between survivors and non-survivors (p < 0.05). Multivariate regression analysis showed that hospital-acquired infections, septic shock, length of hospital stay, and creatinine levels were independent risk factors for mortality. Antibiotic susceptibility test results indicated that clinical outcomes varied depending on bacterial sensitivity to ampicillin/sulbactam. DISCUSSION Klebsiella pneumoniae is a common community-acquired and hospital-acquired bacteria and usually infects older people with complications such as diabetes. Nosocomial infections, length of stay, septic shock, and renal insufficiency are potentially associated with poor prognosis. Bacterial susceptibility to ampicillin/sulbactam affects prognosis.
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Affiliation(s)
- Qun Zhang
- Department of Infectious Diseases, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Pan Wang
- Department of Infectious Diseases, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Menghuan Shen
- Department of Infectious Diseases, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Chun Shan
- Department of Infectious Diseases, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
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Chen K, Zhao T, Sun H, Geng Y, Xu Y, Shan C, Chen Y. Comparison of Three Detection Methods for Seoul Virus Causing Hemorrhagic Fever with Renal Syndrome. Clin Lab 2024; 70. [PMID: 38345985 DOI: 10.7754/clin.lab.2023.230821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
BACKGROUND Seoul virus (SEOV) is a significant causative pathogen of hemorrhagic fever with renal syndrome (HFRS). Accurate discrimination of SEOV infection from other viral or bacterial infections holds vital clinical importance. METHODS Our study utilized quantitative real-time PCR (qRT-PCR), metagenomic next-generation sequencing (mNGS), and immunological assays to identify the pathogen causing HFRS. RESULTS For the case, mNGS identified SEOV and suspected host or environmental microorganisms at 5 days from symptom onset. qRT-PCR detected SEOV between 5 to 8 days from symptom onset. Anti-hantavirus IgM antibodies reached positive criteria at 7 days and IgG antibodies at 9 days from symptom onset. CONCLUSIONS qRT-PCR, mNGS, and immunological assays each have merits and drawbacks. Optimal selection depends on laboratory conditions and clinical requirements.
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Xu H, Guan Y, Shan C, Xiao W, Wu M. Development of thermoultrasound assisted blanching to improve enzyme inactivation efficiency, drying characteristics, energy consumption, and physiochemical properties of sweet potatoes. Ultrason Sonochem 2023; 101:106670. [PMID: 37922719 PMCID: PMC10643530 DOI: 10.1016/j.ultsonch.2023.106670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 10/26/2023] [Accepted: 10/28/2023] [Indexed: 11/07/2023]
Abstract
Thermoultrasound (USB) as a promising alternative to traditional hot water (HWB) blanching was employed to blanch sweet potatoes and its influence on enzyme activity, drying behavior, energy consumption and physiochemical properties of sweet potatoes were investigated. Results showed that successive increases in blanching temperature and time resulted in significant (p < 0.05) decreases in PPO and POD activities. Compared to HWB, USB led to more effective drying by promoting texture softening, moisture diffusion, microstructure alterations, and microchannels formation, which significantly reduced energy consumption and improved the overall quality of the dried sample. Specifically, USB at 65 °C for 15 min improved water holding capacity and ABTS, while USB at 65 °C for 30 min improved color (more red and yellow), total phenolic content, total carotenoid content, and DPPH. Unfortunately, blanching process showed detrimental effects on the amino acid composition of dried samples. Overall, the development of thermoultrasound assisted blanching for sweet potatoes has the potential to revolutionize the processing and production of high-quality sweet potato products, while also improving the sustainability of food processing operations.
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Affiliation(s)
- Huihuang Xu
- College of Engineering, China Agricultural University, No. 17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Yaru Guan
- College of Engineering, China Agricultural University, No. 17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Chun Shan
- College of Engineering, China Agricultural University, No. 17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Wanru Xiao
- College of Engineering, China Agricultural University, No. 17 Qinghua East Road, Haidian District, Beijing 100083, China
| | - Min Wu
- College of Engineering, China Agricultural University, No. 17 Qinghua East Road, Haidian District, Beijing 100083, China.
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Shan C, Liu H, Yu Y. Research on improved algorithm for helmet detection based on YOLOv5. Sci Rep 2023; 13:18056. [PMID: 37872253 PMCID: PMC10593779 DOI: 10.1038/s41598-023-45383-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 10/19/2023] [Indexed: 10/25/2023] Open
Abstract
The continuous development of smart industrial parks has imposed increasingly stringent requirements on safety helmet detection in environments such as factories, construction sites, rail transit, and fire protection. Current models often suffer from issues like false alarms or missed detections, especially when dealing with small and densely packed targets. This study aims to enhance the YOLOv5 target detection method to provide real-time alerts for individuals not wearing safety helmets in complex scenarios. Our approach involves incorporating the ECA channel attention mechanism into the YOLOv5 backbone network, allowing for efficient feature extraction while reducing computational load. We adopt a weighted bi-directional feature pyramid network structure (BiFPN) to facilitate effective feature fusion and cross-scale information transmission. Additionally, the introduction of a decoupling head in YOLOv5 improves detection performance and convergence rate. The experimental results demonstrate a substantial improvement in the YOLOv5 model's performance. The enhanced YOLOv5 model achieved an average accuracy of 95.9% on a custom-made helmet dataset, a 3.0 percentage point increase compared to the original YOLOv5 model. This study holds significant implications for enhancing the accuracy and robustness of helmet-wearing detection in various settings.
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Affiliation(s)
- Chun Shan
- Guangdong Polytechnic Normal University, Guangzhou, China.
- Guangzhou University, Guangzhou, China.
| | - HongMing Liu
- Guangdong Polytechnic Normal University, Guangzhou, China
| | - Yu Yu
- Guangdong Polytechnic Normal University, Guangzhou, China
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Chen K, Sun H, Geng Y, Yang C, Shan C, Chen Y. Ferritin and procalcitonin serve as discriminative inflammatory biomarkers and can predict the prognosis of severe fever with thrombocytopenia syndrome in its early stages. Front Microbiol 2023; 14:1168381. [PMID: 37143532 PMCID: PMC10151901 DOI: 10.3389/fmicb.2023.1168381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 03/24/2023] [Indexed: 05/06/2023] Open
Abstract
Introduction Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease with high mortality. The pathophysiology of SFTS remains unclear. Hence, the identification of inflammatory biomarkers for SFTS is crucial for the timely management and prevention of disease severity. Methods A total of 256 patients with SFTS were divided into a survivor group and a non-survivor group. Classical inflammatory biomarkers such as ferritin, procalcitonin (PCT), C-reactive protein (CRP), and white blood cells were investigated for their association with viral load and the clinical significance for predicting the mortality of patients with SFTS. Results Serum ferritin and PCT showed a positive association with viral load. Ferritin and PCT levels in non-survivors were significantly higher than those in survivors at 7-9 days from symptom onset. The area under the receiver operating characteristic curve (AUC) values of ferritin and PCT for predicting the fatal outcome of SFTS were 0.9057 and 0.8058, respectively. However, the CRP levels and WBC counts exhibited a weak association with viral load. The AUC value of CRP for predicting mortality was more than 0.7 at 13-15 days from symptom onset. Discussion Ferritin and PCT levels, especially ferritin, could be potential inflammatory biomarkers for predicting the prognosis of patients with SFTS in its early stages.
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Affiliation(s)
- Keping Chen
- Clinical Laboratory, Zhongda Hospital, Medical School, Southeast University, Nanjing, China
- *Correspondence: Keping Chen,
| | - Huidi Sun
- Clinical Laboratory, Zhongda Hospital, Medical School, Southeast University, Nanjing, China
| | - Yu Geng
- Department of Infectious Diseases, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Chuankun Yang
- Clinical Laboratory, Zhongda Hospital, Medical School, Southeast University, Nanjing, China
| | - Chun Shan
- Department of Infectious Diseases, Zhongda Hospital, Southeast University, Nanjing, China
| | - Yuxin Chen
- Clinical Laboratory, Nanjing Drum Tower Hospital, Nanjing University, Nanjing, China
- Yuxin Chen,
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Zhao K, Shan C, Luximon Y. Contributions of individual muscle forces to hip, knee, and ankle contact forces during the stance phase of running: a model-based study. Health Inf Sci Syst 2022; 10:11. [PMID: 35719242 PMCID: PMC9203628 DOI: 10.1007/s13755-022-00177-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/19/2022] [Indexed: 10/18/2022] Open
Abstract
Knowledge of muscle forces' contributions to the joint contact forces can assist in the evaluation of muscle function, joint injury prevention, treatment of gait disorders, and arthroplasty planning. This study's objective was to evaluate the contributions of human lower limb muscles to the hip, knee, and ankle joint contact forces during the stance phase of running. A total of 25 muscles (or groups) were investigated based on the OpenSim framework along the anterior-posterior, superoinferior, and mediolateral components of each joint coordinate system. It was revealed that, during the running stance phase, the gluteus medius, gluteus maximus, and iliopsoas mainly contributed to the hip contact force. The soleus, vastus group, and rectus femoris primarily contributed to the knee contact force, while the peroneus, soleus, gluteus medius, and gastrocnemius mainly contributed to the ankle joint force; some muscles simultaneously offloaded the joints during the stance phase. The distributive pattern of the individual muscle functions contributing to the joint load may substantially differ during the running and walking stance phases. This study's findings may further provide suggestive information for the design of lower limb joint prosthesis, the study of the biomechanics of pathologic walking and running, and the progression of joint osteoarthritis.
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Affiliation(s)
- Kaiwei Zhao
- Guangdong Polytechnic Normal University, Guangzhou, Guangdong China
| | - Chun Shan
- Guangdong Polytechnic Normal University, Guangzhou, Guangdong China
| | - Yan Luximon
- The Hong Kong Polytechnic University, Hung Hom, Hong Kong
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Li M, Tian Z, Du X, Yuan X, Shan C, Guizani M. Power Normalized Cepstral Robust Features of Deep Neural Networks in a Cloud Computing Data Privacy Protection Scheme. Neurocomputing 2022. [DOI: 10.1016/j.neucom.2022.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Xu M, Kong Y, Xing P, Chen R, Ma Y, Shan C, LiYuan Z. A Multicenter, Single-Arm, Phase II Trial of RC48-ADC Combined with Radiotherapy, PD-1/PD-L1 Inhibitor Sequential GM-CSF and IL-2 (PRaG3.0 regimen) for the Treatment of HER2-Expressing Advanced Solid Tumors. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Yu X, Yang X, Tan Q, Shan C, Lv Z. An edge computing based anomaly detection method in IoT industrial sustainability. Appl Soft Comput 2022. [DOI: 10.1016/j.asoc.2022.109486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Shi C, Shan C. The ratio model between throughput and delay based on payload transmission time in wireless blockchain network. Sci Rep 2022; 12:15324. [PMID: 36097013 PMCID: PMC9468162 DOI: 10.1038/s41598-022-19138-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 08/24/2022] [Indexed: 12/03/2022] Open
Abstract
In wireless blockchain network (WBN), it is necessary to study the impact of delay performance on blockchain technology with different data rates, because the throughput performance is not the only goal. We propose an analysis model to evaluate network performance based on both delay performance and network performance. Firstly, we separate the communication process from business process in WBN, and package the business data into the payload in a frame. Secondly, we define throughput-time \documentclass[12pt]{minimal}
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\begin{document}$$S_V$$\end{document}SV to network delay. Then, we analyze the ratio model with the parameter of payload transmission time, which is defined as a ratio of payload in a frame to data transmission rate. Using the DATA/ACK type in IEEE 802.11, we learn that the optimal payload transmission time is independent of node number and only determined by some interframe space of access mechanism and propagation time. Finally, we analyze the performance of network delay and throughput between DATA/ACK type and RTS/CTS/DATA/ACK type based on payload transmission time. The simulation data verify the validity and accuracy of the proposed model.
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Affiliation(s)
- Chun Shi
- School of Electronic and Information, Guangdong Polytechnic Normal University, Guangzhou, 510633, People's Republic of China.,Guangxi Key Laboratory of Multimedia Communications and Network Technology, Nanning, 530004, People's Republic of China
| | - Chun Shan
- School of Electronic and Information, Guangdong Polytechnic Normal University, Guangzhou, 510633, People's Republic of China.
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Junde Z, Tingting L, Lu Z, Shan C, Dan Y, Yizhen Z. Lithium chloride promotes neural functional recovery after local cerebral ischaemia injury in rats through Wnt signalling pathway activation. Folia Morphol (Warsz) 2022; 82:519-532. [PMID: 35916382 DOI: 10.5603/fm.a2022.0068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 07/07/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND Lithium chloride (LiCl) has a significant neuroprotective effect in cerebral ischaemia. However, to date, there is a paucity of evidence on the role of LiCl in neural restoration after brain ischaemia and the signalling pathways involved remain unclear. MATERIALS AND METHODS Therefore, to address this gap, the middle cerebral artery occlusion (MCAO) rat model was used to simulate human ischaemia stroke. Male Sprague-Dawley rats were given MCAO for 90 min followed by reperfusion, and Dickkopf-1 (DKK1, 5.0 μg/kg) was administered half an hour before MCAO. Rats were then treated with hypodermic injection of LiCl (2.0 mmol/kg) twice a day for 1 week. After treatment, cognitive impairment was assessed by the Morris water maze test. Neurological deficit score, 2,3,5-triphenyl tetrazolium chloride staining, brain water content, and histopathology were used to evaluate brain damage. Enzyme-linked immunosorbent assay was used to measure oxidative stress damage and inflammatory cytokines. Apoptosis of the hippocampal neurons was tested by western blot. The key factors of Wnt signalling pathway in the ischaemic penumbra were detected by immunofluorescence staining and quantitative real-time polymerase chain reaction. RESULTS Current experimental results showed that LiCl treatment significantly improved the impaired spatial learning and memory ability, suppressed oxidative stress, inflammatory reaction, and neuron apoptosis accompanied by attenuating neuronal damage, which subsequently decreased the brain oedema, infarct volume and neurological deficit. Furthermore, the treatment of LiCl activated Wnt signalling pathway. Interestingly, the aforementioned effects of LiCl treatment were markedly reversed by administration of DKK1, an inhibitor of Wnt signalling pathway. CONCLUSIONS These results indicate that LiCl exhibits neuroprotective effects in focal cerebral ischaemia by Wnt signalling pathway activation, and it might have latent clinical application for the prevention and treatment of ischaemic stroke.
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Affiliation(s)
- Z Junde
- Department of Anatomy, School of Basic Medicine, Guizhou Medical University, Guiyang, China.
| | - L Tingting
- Department of Anatomy, School of Basic Medicine, Guizhou Medical University, Guiyang, China
| | - Z Lu
- Department of Anatomy, School of Basic Medicine, Guizhou Medical University, Guiyang, China
| | - C Shan
- Department of Anatomy, School of Basic Medicine, Guizhou Medical University, Guiyang, China
| | - Y Dan
- Department of Anatomy, School of Basic Medicine, Guizhou Medical University, Guiyang, China
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Gao X, Hu C, Shan C, Han W. MaliCage: A packed malware family classification framework based on DNN and GAN. Journal of Information Security and Applications 2022. [DOI: 10.1016/j.jisa.2022.103267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shan C, Wei Z, Zhang ZL. [A pedigree study of Loeys-Dietz syndrome type 4 with skeletal deformity related to a novel TGFβ2 mutation]. Zhonghua Nei Ke Za Zhi 2022; 61:552-558. [PMID: 35488607 DOI: 10.3760/cma.j.cn112138-20210908-00624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: Loeys-Dietz syndrome is a rare type of hereditary connective tissue disease. This study was aimed to analyze the clinical characteristics and gene mutations in a family of Loeys-Dietz syndrome with skeletal deformity. Methods: Clinical data of the proband and family members were collected and biochemical measurements and radiological examinations were conducted. Genomic DNA was extracted from peripheral blood of the family members. Whole-exome sequencing was performed to determine the mutation sites in the proband, and Sanger sequencing was applied to verify the candidate mutation in the other family members. Results: The proband is a 34-year-old man with deformities of lower extremities for more than 30 years. Physical examinations showed dolichostenomelia, pes planus, joint laxity and scoliosis. Echocardiography revealed the dilatation of aortic root at the level of the sinuses of Valsalva. A heterozygous missense mutation (c. 220A>C, p.Thr74Pro) in exon 1 of TGFβ2 gene was identified in the proband. The same mutation was detected in his sister and niece with similar clinical features such as deformities of lower extremities and pes planus. This novel mutation has not been reported in ExAC or 1000G and was predicted to be deleterious, supporting a diagnosis of Loeys-Dietz syndrome type 4. Conclusions: Loeys-Dietz syndrome type 4 is caused by TGFβ2 mutations. Skeletal deformity is one of the distinctive features. Genetic testing is helpful for the early diagnosis and differential diagnosis from other connective tissue diseases.
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Affiliation(s)
- C Shan
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Z Wei
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - Z L Zhang
- Shanghai Clinical Research Center of Bone Disease, Department of Osteoporosis and Bone Diseases, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
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Li Y, Chu Y, Shi G, Wang X, Ye W, Shan C, Wang D, Zhang D, He W, Jiang J, Ma S, Han Y, Zhao Z, Du S, Chen Z, Li Z, Yang Y, Wang C, Xu X, Wu H. A novel inhibitor of ARfl and ARv7 induces protein degradation to overcome enzalutamide resistance in advanced prostate cancer. Acta Pharm Sin B 2022; 12:4165-4179. [DOI: 10.1016/j.apsb.2022.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/21/2022] [Accepted: 03/23/2022] [Indexed: 01/07/2023] Open
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Shan C, Zhou S, Zhang Z, Li M. Digital watermarking method for image feature point extraction and analysis. INT J INTELL SYST 2022. [DOI: 10.1002/int.22881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Chun Shan
- School of Electronics and Information Guangdong Polytechnic Normal University Guangzhou China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) Zhuhai China
| | - Siyi Zhou
- School of Electronics and Information Guangdong Polytechnic Normal University Guangzhou China
| | - Ziyi Zhang
- School of Electronics and Information Guangdong Polytechnic Normal University Guangzhou China
| | - Mianjie Li
- School of Electronics and Information Guangdong Polytechnic Normal University Guangzhou China
- Cyberspace Institute of Advanced Technology Guangzhou University Guangzhou China
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Huang Y, Shen K, Si Y, Shan C, Guo H, Chen M, Wu L. Dendritic organosilica nanospheres with large mesopores as multi-guests vehicle for photoacoustic/ultrasound imaging-guided photodynamic therapy. J Colloid Interface Sci 2021; 583:166-177. [DOI: 10.1016/j.jcis.2020.09.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 08/19/2020] [Accepted: 09/09/2020] [Indexed: 11/28/2022]
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Shan C, Huang Y, Wei J, Chen M, Wu L. Ultra-high thermally stable gold nanorods/radial mesoporous silica and their application in enhanced chemo-photothermal therapy. RSC Adv 2021; 11:10416-10424. [PMID: 35423593 PMCID: PMC8695621 DOI: 10.1039/d1ra00213a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 02/22/2021] [Indexed: 12/01/2022] Open
Abstract
In this work, gold nanorods embedded in ultra-thick silica shells with radial mesopores (AuNR/R-SiO2) were successfully synthesized in an ethanol/water solution. By optimizing the concentration of CTAB and the volume of ethanol, a shell thickness up to 83 nm was realized. Taking advantage of the ultra-thick silica shell, AuNR/R-SiO2 exhibited ultra-high thermal stability—could retain the integrity and photothermal effects even after 800 °C thermal annealing, providing inspiring sights into the application under some extreme conditions. After continuous irradiation for twenty times, the photothermal effects of AuNRs coated with R-SiO2 still remained perfect without performance degradation and shape change. Besides, abundant mesopores could effectively improve the photothermal conversion efficiency of AuNRs. AuNR/R-SiO2 exhibited an outstanding loading capacity up to 2178 mg g−1 with doxorubicin (DOX) as the model drug, and the release behaviors could be nicely controlled by acidity and near-infrared (NIR) laser to achieve the “On-demand” mode. In vitro experiments showed that AuNR/R-SiO2 were biocompatible and easy to be internalized by HeLa cells. In addition, due to the ultra-thick silica shell, the effect of the combined chemo-photothermal therapy using AuNR/R-SiO2/DOX was significantly enhanced, showing a higher therapeutic efficiency than single chem- or photothermal therapy. It was worth noting that AuNR/R-SiO2 are effective and promising for drug delivery and tumor therapy. AuNRs coated with ultra-thick SiO2 shells exhibited ultra-high thermal stability (800 °C), excellent photothermal conversion efficiency (70%) and outstanding loading capacity. The drug release could be nicely controlled by acidity and NIR laser to achieve the “On-demand” mode.![]()
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Affiliation(s)
- Chun Shan
- Department of Materials Science
- State Key Laboratory of Molecular Engineering of Polymers
- Fudan University
- Shanghai
- China
| | - Yuting Huang
- Department of Materials Science
- State Key Laboratory of Molecular Engineering of Polymers
- Fudan University
- Shanghai
- China
| | - Junhao Wei
- School of Life Sciences and Technology
- Tongji University
- Shanghai
- China
| | - Min Chen
- Department of Materials Science
- State Key Laboratory of Molecular Engineering of Polymers
- Fudan University
- Shanghai
- China
| | - Limin Wu
- Department of Materials Science
- State Key Laboratory of Molecular Engineering of Polymers
- Fudan University
- Shanghai
- China
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Gao X, Hu C, Shan C, Liu B, Niu Z, Xie H. Malware classification for the cloud via semi-supervised transfer learning. Journal of Information Security and Applications 2020. [DOI: 10.1016/j.jisa.2020.102661] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wen L, Zhen J, Zhou Z, Li S, Lai M, Shan C, Zhou C, Cai L. Impact of Whole Brain Radiotherapy on Leptomeningeal Metastasis from Non-Small Cell Lung Cancer in Targeted Therapy Era. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Huang R, Zhu L, Xue L, Liu L, Yan X, Wang J, Zhang B, Xu T, Ji F, Zhao Y, Cheng J, Wang Y, Shao H, Hong S, Cao Q, Li C, Zhao XA, Zou L, Sang D, Zhao H, Guan X, Chen X, Shan C, Xia J, Chen Y, Yan X, Wei J, Zhu C, Wu C. Clinical findings of patients with coronavirus disease 2019 in Jiangsu province, China: A retrospective, multi-center study. PLoS Negl Trop Dis 2020; 14:e0008280. [PMID: 32384078 PMCID: PMC7239492 DOI: 10.1371/journal.pntd.0008280] [Citation(s) in RCA: 164] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 05/20/2020] [Accepted: 04/08/2020] [Indexed: 12/15/2022] Open
Abstract
Limited data are available for clinical characteristics of patients with coronavirus disease 2019 (COVID-19) outside Wuhan. This study aimed to describe the clinical characteristics of COVID-19 and identify the risk factors for severe illness of COVID-19 in Jiangsu province, China. Clinical data of hospitalized COVID-19 patients were retrospectively collected in 8 hospitals from 8 cities of Jiangsu province, China. Clinical findings of COVID-19 patients were described and risk factors for severe illness of COVID-19 were analyzed. By Feb 10, 2020, 202 hospitalized patients with COVID-19 were enrolled. The median age of patients was 44.0 years (interquartile range, 33.0-54.0). 55 (27.2%) patients had comorbidities. At the onset of illness, the common symptoms were fever (156 [77.2%]) and cough (120 [59.4%]). 66 (32.7%) patients had lymphopenia. 193 (95.5%) patients had abnormal radiological findings. 11 (5.4%) patients were admitted to the intensive care unit and none of the patients died. 23 (11.4%) patients had severe illness. Severe illness of COVID-19 was independently associated with body mass index (BMI) ≥ 28 kg/m2 (odds ratio [OR], 9.219; 95% confidence interval [CI], 2.731 to 31.126; P<0.001) and a known history of type 2 diabetes (OR, 4.326; 95% CI, 1.059 to 17.668; P = 0.041). In this case series in Jiangsu Province, COVID-19 patients had less severe symptoms and had better outcomes than the initial COVID-19 patients in Wuhan. The BMI ≥ 28 kg/m2 and a known history of type 2 diabetes were independent risk factors of severe illness in patients with COVID-19.
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Affiliation(s)
- Rui Huang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Li Zhu
- Department of Infectious Diseases, The Affiliated Infectious Diseases Hospital of Soochow University, Suzhou, China
| | - Leyang Xue
- Department of Critical Medicine, Huai'an No. 4 People's Hospital, Huai’an, China
| | - Longgen Liu
- Department of Infectious Diseases, The Third People's Hospital of Changzhou, Changzhou, China
| | - Xuebing Yan
- Department of Infectious Diseases, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Jian Wang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Biao Zhang
- Department of Quality Control Office, Huai'an No. 4 People's Hospital, Huai’an, China
| | - Tianmin Xu
- Department of Infectious Diseases, The Third People's Hospital of Changzhou, Changzhou, China
| | - Fang Ji
- Department of Infectious Diseases, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yun Zhao
- Department of Infectious Diseases, The Third People’s Hospital of Yangzhou, Yangzhou, China
| | - Juan Cheng
- Department of Infectious Diseases, Yancheng Second People’s Hospital, Yancheng, China
| | - Yinling Wang
- Department of Infectious Diseases, The Affiliated Infectious Diseases Hospital of Soochow University, Suzhou, China
| | - Huaping Shao
- Department of Infectious Diseases, The People’s Hospital of Suqian, Suqian, China
| | - Shuqin Hong
- Nursing Department, Huai'an No. 4 People's Hospital, Huai’an, China
| | - Qi Cao
- Department of Infectious Diseases, The Third People's Hospital of Changzhou, Changzhou, China
| | - Chunyang Li
- Department of Infectious Diseases, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xiang-an Zhao
- Department of Gastroenterology, Northern Jiangsu People’s Hospital, Clinical Medical College of Yangzhou University, Yangzhou, China
| | - Lei Zou
- Department of Infectious Diseases, Yancheng Second People’s Hospital, Yancheng, China
| | - Dawen Sang
- Department of Infectious Diseases, Yancheng Second People’s Hospital, Yancheng, China
| | - Haiyan Zhao
- Department of Infectious Diseases, The People’s Hospital of Suqian, Suqian, China
| | - Xinying Guan
- Department of Neurology, The Affiliated Hospital of Kangda College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Xiaobing Chen
- Department of Emergency, The Affiliated Hospital of Kangda College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Chun Shan
- Department of Infectious Diseases, Zhongda Hospital Southeast University, Nanjing, China
| | - Juan Xia
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Yuxin Chen
- Department of Laboratory Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Xiaomin Yan
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Jie Wei
- Department of Infectious Diseases, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
| | - Chuanwu Zhu
- Department of Infectious Diseases, The Affiliated Infectious Diseases Hospital of Soochow University, Suzhou, China
| | - Chao Wu
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
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Huang R, Xia J, Chen Y, Shan C, Wu C. A family cluster of SARS-CoV-2 infection involving 11 patients in Nanjing, China. Lancet Infect Dis 2020; 20:534-535. [PMID: 32119823 PMCID: PMC7159019 DOI: 10.1016/s1473-3099(20)30147-x] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 02/21/2020] [Indexed: 12/25/2022]
Affiliation(s)
- Rui Huang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Juan Xia
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Yuxin Chen
- Department of Laboratory Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Chun Shan
- Department of Infectious Diseases, Zhongda Hospital Southeast University, Nanjing, China
| | - Chao Wu
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China.
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Mao L, Shan C, Fu K, Jin J, Yang S, Li G. Porous Carbon Nanofiber/Carbon Black Composite as Promising Support for Platinum Catalyst to Enhance Oxygen Reduction Reaction in PEMFC. ChemistrySelect 2019. [DOI: 10.1002/slct.201902857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Linchang Mao
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua University Shanghai 201620 China
| | - Chun Shan
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua University Shanghai 201620 China
| | - Kang Fu
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua University Shanghai 201620 China
| | - Junhong Jin
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua University Shanghai 201620 China
| | - Shenglin Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua University Shanghai 201620 China
| | - Guang Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua University Shanghai 201620 China
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Shan C, Sun H, Zhou Y, Wang W. Jasmonic acid-induced hydrogen sulfide activates MEK1/2 in regulating the redox state of ascorbate in Arabidopsis thaliana leaves. Plant Signal Behav 2019; 14:1629265. [PMID: 31187685 PMCID: PMC6619967 DOI: 10.1080/15592324.2019.1629265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/25/2019] [Accepted: 06/03/2019] [Indexed: 06/09/2023]
Abstract
In this paper, we investigated the relationship between hydrogen sulfide (H2S) and mitogen-activated protein kinase kinase (MEK1/2) in jasmonic acid (JA)-regulated the redox state of ascorbate in the leaves of Arabidopsis thaliana. The results showed that JA significantly enhanced the phosphorylation level of MEK1/2, the production of endogenous H2S and the ratio of reduced ascorbate (AsA) to dehydroascorbate (DHA) (AsA/DHA) in wild type of A. thaliana (WT). However, there were no obvious effects of JA on above indicators in H2S synthetic mutant of A. thaliana (MT). H2S scavenger hypotaurine (HT) markedly reduced JA-induced the phosphorylation level of MEK1/2, AsA/DHA ratio and the production of endogenous H2S in WT. Application of H2S donor sodium hydrosulfide (NaHS) to JA-treated MT plants increased above indicators. Application of NaHS to (HT+JA)-treated MT plants did not reverse the effects of HT on above JA-induced indicators. MEK1/2 inhibitor PD98059 decreased JA-induced AsA/DHA ratio and the transcript levels and the activities of ascorbate peroxidase (APX), glutathione reductase (GR), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and L-galactono-1,4-lactone dehydrogenase (GalLDH) in WT. However, PD98059 had no effect on JA-induced the production of endogenous H2S in WT. Compared with Control-MT, there were no obvious effects of JA on the production of endogenous H2S, AsA/DHA ratio and the transcript levels and activities of above enzymes in MT. However, application of PD98059 reduced above JA-induced indicators except the production of endogenous H2S and DHA content in MT. Our results suggested that H2S activated MEK1/2 in JA-regulated AsA/DHA ratio in A. thaliana leaves through enzymes in ascorbate metabolism.
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Affiliation(s)
- C. Shan
- College of Life Science, Henan Agricultural University, Zhengzhou, China
- Postdoctoral Research Base, Henan Institute of Science and Technology, Xinxiang, China
- School of Science and Technology, Henan Institute of Science and Technology, Xinxiang, China
| | - H. Sun
- School of Science and Technology, Henan Institute of Science and Technology, Xinxiang, China
| | - Y. Zhou
- Postdoctoral Research Base, Henan Institute of Science and Technology, Xinxiang, China
- School of Science and Technology, Henan Institute of Science and Technology, Xinxiang, China
| | - W. Wang
- College of Life Science, Henan Agricultural University, Zhengzhou, China
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Rong J, Shan C, Liu S, Zheng H, Liu C, Liu M, Jin F, Wang L. Skin resistance to UVB-induced oxidative stress and hyperpigmentation by the topical use of Lactobacillus helveticus NS8-fermented milk supernatant. J Appl Microbiol 2017; 123:511-523. [PMID: 28598022 DOI: 10.1111/jam.13506] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 03/31/2017] [Accepted: 05/11/2017] [Indexed: 01/29/2023]
Abstract
AIMS In this study, we investigated the preventive properties of the supernatant of Lactobacillus helveticus NS8-fermented milk (NS8-FS) against UV light-induced skin oxidative damage and hyperpigmentation. METHODS AND RESULTS NS8-FS exhibited significant radical scavenging activity in tests with ABST+ and DPPH scavenging methods, and as well strongly inhibited 3-morpholinosydnonimine (Sin-1)-induced ROS generation in HaCat keratinocytes. Unexpectedly, NS8-FS was found to inhibit melanin production in B16F10 melanoma cells and to exhibit inhibitory effects both to the enzymatic activity of tyrosinase (TYR) and the expression of proteins required for melanin synthesis. In SKH-1 hairless mice, topical application of NS8-FS alleviated UVB-induced skin photodamage, including the improvement of the appearance of epidermal thickness, transepidennal water loss and lipid peroxidation levels. In the tanning guinea pig model, the whitening effect of NS8-FS was demonstrated using Masson-Fontana staining and TYR staining. Furthermore, NS8-FS was shown to stimulate the nuclear translocation and activation of the Nrf2 protein, along with recovery of antioxidant enzyme activities. CONCLUSION NS8-FS exhibits the protective capacities against UV light-induced skin oxidative damage and hyperpigmentation. SIGNIFICANCE AND IMPACT OF THE STUDY Our findings indicate the potential of cell-free fermented products of lactic acid bacteria in topical photoprotection.
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Affiliation(s)
- J Rong
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Institute of Ageing Research, School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - C Shan
- Institute of Ageing Research, School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - S Liu
- Institute of Ageing Research, School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - H Zheng
- Institute of Ageing Research, School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - C Liu
- Institute of Ageing Research, School of Medicine, Hangzhou Normal University, Hangzhou, China
| | - M Liu
- Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.,University of the Chinese Academy of Sciences, Beijing, China
| | - F Jin
- Key Lab of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - L Wang
- Institute of Ageing Research, School of Medicine, Hangzhou Normal University, Hangzhou, China
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25
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Zhang Q, Su R, Shan C, Gao C, Wu P. Non-SMC Condensin I Complex, Subunit G (NCAPG) is a Novel Mitotic Gene Required for Hepatocellular Cancer Cell Proliferation and Migration. Oncol Res 2017; 26:269-276. [PMID: 29046167 PMCID: PMC7844763 DOI: 10.3727/096504017x15075967560980] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the second leading cause of cancer-related deaths worldwide. Currently, only chemoembolization and sorafenib have shown survival benefits for advanced HCC. There are major unmet needs in HCC management and the discovery of new therapeutic targets. Here we identified NCAPG (non-SMC condensin I complex, subunit G) as a novel mitotic gene required for HCC cell proliferation and migration through siRNA knockdown of a panel of novel overexpressed genes in HCC based on The Cancer Genome Atlas (TCGA) dataset. We found that knockdown of NCAPG induces HCC cell mitosis and inhibits cell growth, proliferation, and migration in vitro. Tetracycline-inducible shRNA knockdown of NCAPG inhibits tumor growth of HCC cells in vivo. Moreover, overexpression of NCAPG in clinical HCC samples was associated with recurrence and survival of patients. The overexpression of NCAPG was significantly correlated with the overexpression of CCNB1 (G2/mitotic-specific cyclin B1), a regulatory protein involved in mitosis. Therefore, NCAPG may provide a promising novel therapeutic target for the treatment of advanced HCC in the future.
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Affiliation(s)
- Qun Zhang
- Division of Infectious Diseases, Affiliated Zhongda Hospital of Southeast University, Nanjing, Jiangsu Province, P.R. China
| | - Ruixia Su
- Division of Infectious Diseases, Affiliated Zhongda Hospital of Southeast University, Nanjing, Jiangsu Province, P.R. China
| | - Chun Shan
- Division of Infectious Diseases, Affiliated Zhongda Hospital of Southeast University, Nanjing, Jiangsu Province, P.R. China
| | - Chao Gao
- Division of Infectious Diseases, Affiliated Zhongda Hospital of Southeast University, Nanjing, Jiangsu Province, P.R. China
| | - Pei Wu
- Division of Infectious Diseases, Affiliated Zhongda Hospital of Southeast University, Nanjing, Jiangsu Province, P.R. China
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Chen X, Meng X, Song X, Geng Y, Shan C. Coverage probability in cognitive radio networks powered by renewable energy with primary transmitter assisted protocol. Inf Sci (N Y) 2017. [DOI: 10.1016/j.ins.2017.03.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Li SJ, Yan SY, Zhou Y, Han KLEE, Guo WL, Xia Q, Vibhuti SP, Wang JZ, Ji SW, Yang SHAH, Yang SN, Shan C, Liu CY, Yi ZZ, Liu RB, Lin L, Wang B, He JQ, Li ZL, Pan Y, Guo L, Chen MX, Liu XN, Zhou Y, Li L, Xiong CQ, Qi Q, Hei XY, Cao J, Jiang YJ, Zhang MY, Shoo Y. [Ventilator-associated pneumonia among premature infants <34 weeks' gestational age in neonatal intensive care unit in China: a multicenter study]. Zhonghua Er Ke Za Zhi 2017; 55:182-187. [PMID: 28273700 DOI: 10.3760/cma.j.issn.0578-1310.2017.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the incidence and pathogen distribution of ventilator-associated pneumonia (VAP) among preterm infants admitted to level Ⅲ neonatal intensive care units (NICU) in China. Method: A prospective study was conducted in 25 level Ⅲ NICU, enrolling all preterm infants <34 weeks gestational age admitted to the participating NICU within the first 7 days of life from May 2015 to April 2016. Chi-square test, t test and Mann-Whitney U test were used for statistical analysis. Result: A total of 7 918 patients were enrolled, within whom 4 623(58.4%) were males. The birth weight was (1 639±415) g and the gestational age was (31.4±2.0) weeks; 4 654(58.8%) infants required non-invasive mechanical ventilation and 2 154(27.2%) required intubation. Of all the mechanically ventilated patients, VAP occurred in 95 patients. The overall VAP rate was 7.0 episodes per 1 000 ventilator days, varying from 0 to 34.4 episodes per 1 000 ventilator days in different centers. The incidence of VAP was 9.6 and 6.0 per 1 000 ventilator days in children's hospitals and maternity-infant hospitals respectively, without significant differences (t=1.002, P=0.327). Gram-negative bacilli (76 strains, 91.6%) were the primary VAP microorganisms, mainly Acinetobacter baumannii (24 strains, 28.9%), Klebsiella pneumonia (23 strains, 27.7%), and Pseudomonas aeruginosa (10 strains, 12.0%). Conclusion: The incidence of VAP in China is similar to that in developed counties, with substantial variability in different NICU settings. More efforts are needed to monitor and evaluate the preventable factors associated with VAP and conduct interventions that could effectively reduce the occurrence of VAP.
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Affiliation(s)
- S J Li
- *Department of Neonatology, Children's Hospital of Fudan University, Shanghai 201102, China
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He L, Liu S, Shan C, Tu Y, Li Z, Zhang XD. Differential HbA1c response in the placebo arm of DPP-4 inhibitor clinical trials conducted in China compared to other countries: a systematic review and meta-analysis. BMC Pharmacol Toxicol 2016; 17:40. [PMID: 27600598 PMCID: PMC5013632 DOI: 10.1186/s40360-016-0084-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 08/03/2016] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND It has been observed that the efficacy of dipeptidyl peptidase-4 (DPP-4) inhibitors as compared to the placebo groups in some clinical trials conducted in China is weaker than that in trials conducted outside China, leading to the suspicion that this may be caused by differential Glycosylated Hemoglobin (HbA1c) response in the placebo arm of DPP-4 inhibitor clinical trials conducted in China compared to other countries. METHODS We searched published articles and other documents related to phase III placebo-control trials of DPP-4 inhibitors in Type 2 diabetes mellitus (T2DM). We included studies from different countries and compared those conducted in China to those conducted in other countries. Meta-regression analysis was used to analyze the HbA1c response in the placebo arms. RESULTS A total of 66 studies met the inclusion criteria and 10 were conducted within China. There were a total of 8303 participants (mean age 56, male 57 %) in placebo groups. The pooled change in HbA1c for the placebo groups of 10 trials conducted in patients with T2DM in China was 0.26 % (95 % CI [-0.36 %, -0.16 %], p-value < 0.001), compared to 0.015 % (95 % CI [-0.05 %, 0.08 %], p-value is 0.637) for 56 trials conducted outside of China. The difference of placebo effect between trials conducted in and outside China is -0.273 % (95 % CI [-0.42 %, -0.13 %], p-value is less than 0.001) while after excluding trials conducted in Japan, the difference is -0.203 % (95 % CI [-0.35 %, -0.06 %], p-value is 0.005). They are both statistically significant. CONCLUSIONS The meta-analysis in the article demonstrates that there is statistically significant difference in the HbA1c response in the placebo arm of DPP-4 inhibitor clinical trials conducted in China compared to other countries. This differential HbA1c response in the placebo arm should be taken into consideration by both experimenters and medical decision makers when future DPP-4 studies are conducted in China.
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Affiliation(s)
- Lingyu He
- Research School of Finance, Actuarial Studies & Statistics, The Australian National University, Canberra, ACT 2601, Australia
| | - Shu Liu
- Clinical Research, MSD China R&D Center, Beijing, 100015, China
| | - Chun Shan
- National Institutes for Food and Drug Control, Beijing, 100050, China
| | - Yingmei Tu
- Clinical Research, MSD China R&D Center, Beijing, 100015, China
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Hou R, Zhou H, Hu K, Ding Y, Yang X, Xu G, Xue P, Shan C, Jia S, Ma Y. Thorough documentation of the accidental aspiration and ingestion of foreign objects during dental procedure is necessary: review and analysis of 617 cases. Head Face Med 2016; 12:23. [PMID: 27449659 PMCID: PMC4957346 DOI: 10.1186/s13005-016-0120-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 07/12/2016] [Indexed: 12/28/2022] Open
Abstract
OBJECTIVES To review the cases of accidental aspiration and ingestion of foreign objects during dental procedure, and to emphasize the importance of thorough documentation of the accidents. METHODS A comprehensive search on (dental procedure/treatment/practice), (aspiration/inhalation), and (ingestion/swallow) was performed for all years before 1st October 2014 available. The statistic analysis was made on the variables including journals and reported year, patients' age, gender, general conditions, dental procedure and location for procedure, foreign objects, site of involvement, possible causes, anesthesia during procedure and treatment, symptoms, treatment time and treatment modality, follow-up, and so on. RESULTS A total of 617 cases reported by 45 articles from 37 kinds of journals were included and analyzed. Most reports made detailed record. While some important variables were recorded incompletely, including patient's general conditions, location for procedure, clinical experience of the involving dentists, tooth position of procedure, possible causes, and anesthesia during procedure and treatment for the accident. CONCLUSIONS Aspiration and ingestion of foreign objects are rare and risky complication during dental procedure. Each accident should have thorough documentation so as to provide enough information for the treatment and prevention.
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Affiliation(s)
- Rui Hou
- />Department of Oral Surgery, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi’an City, Shaanxi Province 710032 China
| | - Hongzhi Zhou
- />Department of Oral Surgery, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi’an City, Shaanxi Province 710032 China
| | - Kaijin Hu
- />Department of Oral Surgery, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi’an City, Shaanxi Province 710032 China
| | - Yuxiang Ding
- />Department of Oral Surgery, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi’an City, Shaanxi Province 710032 China
| | - Xia Yang
- />Department of Oral Surgery, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi’an City, Shaanxi Province 710032 China
| | - Guangjie Xu
- />Department of Oral Surgery, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi’an City, Shaanxi Province 710032 China
| | - Peng Xue
- />Department of Oral Surgery, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi’an City, Shaanxi Province 710032 China
| | - Chun Shan
- />Department of Oral Surgery, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi’an City, Shaanxi Province 710032 China
| | - Sen Jia
- />Department of Oral Surgery, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, School of Stomatology, The Fourth Military Medical University, Xi’an City, Shaanxi Province 710032 China
| | - Yuanyuan Ma
- />Department of Stomatology, Research Institute of Surgery & Daping Hospital, The Third Military Medical University, Chongqing City, 400042 China
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30
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Elf S, Lin R, Xia S, Pan Y, Shan C, Wu S, Lonial S, Gaddh M, Arellano ML, Khoury HJ, Khuri FR, Lee BH, Boggon TJ, Fan J, Chen J. Targeting 6-phosphogluconate dehydrogenase in the oxidative PPP sensitizes leukemia cells to antimalarial agent dihydroartemisinin. Oncogene 2016; 36:254-262. [PMID: 27270429 PMCID: PMC5464402 DOI: 10.1038/onc.2016.196] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 04/19/2016] [Accepted: 04/24/2016] [Indexed: 12/13/2022]
Abstract
The oxidative pentose phosphate pathway (PPP) is crucial for cancer cell metabolism and tumor growth. We recently reported that targeting a key oxidative PPP enzyme, 6-phosphogluconate dehydrogenase (6PGD), using our novel small molecule 6PGD inhibitors Physcion and its derivative S3, shows anti-cancer effects. Notably, humans with genetic deficiency of either 6PGD or another oxidative PPP enzyme, glucose-6-phosphate dehydrogenase (G6PD), exhibit non-immune hemolytic anemia upon exposure to aspirin and various anti-malarial drugs. Inspired by these clinical observations, we examined the anti-cancer potential of combined treatment with 6PGD inhibitors and anti-malarial drugs. We found that stable knockdown of 6PGD sensitizes leukemia cells to anti-malarial agent dihydroartemisinin (DHA). Combined treatment with DHA and Physcion activates AMP-activated protein kinase, leading to synergistic inhibition of human leukemia cell viability. Moreover, our combined therapy synergistically attenuates tumor growth in xenograft nude mice injected with human K562 leukemia cells and cell viability of primary leukemia cells from human patients, but shows minimal toxicity to normal hematopoietic cells in mice as well as red blood cells and mononucleocytes from healthy human donors. Our findings reveal the potential for combined therapy using optimized doses of Physcion and DHA as a novel anti-leukemia treatment without inducing hemolysis.
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Affiliation(s)
- S Elf
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - R Lin
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - S Xia
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - Y Pan
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - C Shan
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - S Wu
- Department of Chemistry, Emory University School of Medicine, Atlanta, GA, USA
| | - S Lonial
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - M Gaddh
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - M L Arellano
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - H J Khoury
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - F R Khuri
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - B H Lee
- Novartis Institutes for BioMedical Research, Cambridge, MA, USA
| | - T J Boggon
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT, USA
| | - J Fan
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
| | - J Chen
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, GA, USA
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Wu B, Lei D, Wang L, Yang X, Jia S, Yang Z, Shan C, Yang X, Zhang C, Lu B. MiRNA-101 inhibits oral squamous-cell carcinoma growth and metastasis by targeting zinc finger E-box binding homeobox 1. Am J Cancer Res 2016; 6:1396-1407. [PMID: 27429852 PMCID: PMC4937741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/04/2016] [Indexed: 06/06/2023] Open
Abstract
MicroRNAs (miRNAs) are implicated in the pathogenesis of oral squamous-cell carcinoma (OSCC). miR-101 is involved in the development and progression of OSCC, but the biological functions and underlying molecular mechanisms of this miRNA remain largely unknown. In this study, we showed that miR-101 was underexpressed in OSCC tissues and cell lines. miR-101 downregulation was inversely correlated with zinc finger E-box binding homeobox 1 (ZEB1) expression, lymph-node metastasis, and poor prognosis in OSCC patients. Enhanced expression of miR-101 significantly inhibited OSCC cell proliferation, apoptosis resistance, migration and invasion in vitro, and suppressed tumor growth and lung metastasis in vivo. Bioinformatics analyses showed that miR-101 directly targeted ZEB1, as confirmed by a dual-luciferase reporter assay. The inhibitory effects of miR-101 on OSCC growth and metastasis were attenuated and phenocopied by ZEB1 overexpression and knockdown, respectively. Overall, our findings indicated that miRNA-101 reduced OSCC growth and metastasis by targeting ZEB1 and provided new evidence of miR-101 as a potential therapeutic target for OSCC patients.
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Affiliation(s)
- Baolei Wu
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical UniversityNo. 145 Changle West Road, Xi’an, Shaanxi 710032, PR China
| | - Delin Lei
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical UniversityNo. 145 Changle West Road, Xi’an, Shaanxi 710032, PR China
| | - Lei Wang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical UniversityNo. 145 Changle West Road, Xi’an, Shaanxi 710032, PR China
| | - Xinjie Yang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical UniversityNo. 145 Changle West Road, Xi’an, Shaanxi 710032, PR China
| | - Sen Jia
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical UniversityNo. 145 Changle West Road, Xi’an, Shaanxi 710032, PR China
| | - Zihui Yang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical UniversityNo. 145 Changle West Road, Xi’an, Shaanxi 710032, PR China
| | - Chun Shan
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical UniversityNo. 145 Changle West Road, Xi’an, Shaanxi 710032, PR China
| | - Xi Yang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical UniversityNo. 145 Changle West Road, Xi’an, Shaanxi 710032, PR China
| | - Chenping Zhang
- Shanghai Key Laboratory of Stomatology, Department of Oral & Maxillofacial-Head & Neck Oncology, Ninth People’s Hospital, School of Stomatology, Shanghai Jiao Tong University School of MedicineNo. 639 Zhizaoju Road, Shanghai 200011, PR China
| | - Bin Lu
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical UniversityNo. 145 Changle West Road, Xi’an, Shaanxi 710032, PR China
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Shan C, Wei J, Hou R, Wu B, Yang Z, Wang L, Lei D, Yang X. Schwann cells promote EMT and the Schwann-like differentiation of salivary adenoid cystic carcinoma cells via the BDNF/TrkB axis. Oncol Rep 2015; 35:427-35. [PMID: 26530352 DOI: 10.3892/or.2015.4366] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Accepted: 09/23/2015] [Indexed: 11/06/2022] Open
Abstract
Perineural invasion (PNI) is a striking biological behavior observed in salivary adenoid cystic carcinoma (SACC). The present study was designed to establish a co-culture model of SACC cells with Schwann cells (SCs), and then study epithelial-mesenchymal transition (EMT) and the Schwann-like differentiation of SACC cells to investigate the likely molecular mechanism of PNI. The co-culture models of SCs with tumor cells (SACC-83, SACC-LM and MEC-1) were established using a Transwell system. An elevated concentration of brain-derived neurotrophic factor (BDNF) was detected by ELISA assay in the co-cultured medium of the SACC-83 group and SACC-LM group rather than the MEC-1 group. The EMT process and Schwann-like differentiation in SACC-83 cells were analyzed by RT-PCR, western blotting, immunofluorescence, photography, and migration and perineural invasion assays. The SACC-83 cells under the co-culture condition with SCs changed to a mesenchymal morphology and had higher migration and invasion capabilities compared with the solely cultured SACC-83 cells, accompanied by the downregulation of E-cadherin and upregulation of N-cadherin and vimentin. The co-cultured SACC-83 cells also developed Schwann-like differentiation with increased expression of SC markers, S100A4 and GFAP. However, inhibition of tropomyosin-related kinase B (TrkB) by K252a markedly blocked these effects. Additionally, the expression and correlation of TrkB, E-cadherin and S100A4 were analyzed by immunohistochemistry in 187 primary SACC cases. The levels of TrkB and S100A4 expression were both positively associated with PNI in the SACC cases, while E-cadherin expression was negatively associated with PNI. Elevated expression of TrkB was significantly correlated with the downregulated expression of E-cadherin and the upregulated expression of S100A4 in the SACC cases. Our results suggest that SCs play a pivotal role in the PNI process by inducing the EMT process and the Schwann-like differentiation of SACC cells via the BDNF/TrkB axis. Interruption of the interreaction between SACC cells and SCs by targeting the BDNF/TrkB axis may be a potential strategy for anti-PNI therapy in SACC.
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Affiliation(s)
- Chun Shan
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Jianhua Wei
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Rui Hou
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Baolei Wu
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Zihui Yang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Lei Wang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Delin Lei
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Xinjie Yang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
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Wu B, Wei J, Hu Z, Shan C, Wang L, Zhang C, Yang X, Yang X, Lei D. Slug silencing inhibited perineural invasion through regulation of EMMPRIN expression in human salivary adenoid cystic carcinoma. Tumour Biol 2015; 37:2161-9. [PMID: 26349748 DOI: 10.1007/s13277-015-4043-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 09/02/2015] [Indexed: 02/07/2023] Open
Abstract
Salivary adenoid cystic carcinoma (SACC) is the most frequent salivary gland malignancy with a unique characteristic that has been named perineural invasion (PNI). EMMPRIN is a transmembrane glycoprotein that has been demonstrated to promote PNI in SACC. Slug, one of the most effective promoters of the epithelial-to-mesenchymal transition (EMT), has been found to be associated with PNI in SACC. The aim of the present study was to investigate the roles and relationships of Slug, EMMPRIN, and E-cadherin in the PNI process of SACC. The expression levels of Slug, EMMPRIN, and E-cadherin in 115 primary SACC cases were statistically analyzed by immunohistochemistry. Simultaneously, the SACC cell line SACC-83 was transfected with recombinant plasmids of silencing Slug (si-Slug) and/or silencing EMMPRIN (si-EMMPRIN). The functions of Slug and EMMPRIN in the EMT and PNI process were assessed by reverse transcription PCR (RT-PCR), western blotting, morphological observation, scratch test, migration assay, and in vitro perineural invasion assay. The immunohistochemical statistics revealed that the high expression of Slug and EMMPRIN and the low expression of E-cadherin were significantly associated with the PNI of SACC (P < 0.05). Slug expression was significantly associated with EMMPRIN expression (P < 0.05), and Slug expression and EMMPRIN expression were both significantly negatively associated with E-cadherin expression (P < 0.05). Slug and EMMPRIN silencing both significantly inhibited EMMPRIN expression but promoted E-cadherin expression in SACC-83 cells (P < 0.01). The series of in vitro assays revealed that silencing of Slug, EMMPRIN, or both induced cell morphology changes and inhibited tumor cell motility and PNI ability in SACC-83 cells (P < 0.01). These results suggested that Slug silencing could inhibit the EMT process by downregulating EMMPRIN and then upregulating E-cadherin in the PNI process of SACC. The present study indicated that Slug and EMMPRIN are potential biomarkers and therapeutic targets for the diagnosis and treatment of PNI in human SACC.
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Affiliation(s)
- Baolei Wu
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, No.145 West Changle road, Xi'an, 710032, China
| | - Jianhua Wei
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, No.145 West Changle road, Xi'an, 710032, China
| | - Zhiqiang Hu
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, No.145 West Changle road, Xi'an, 710032, China
| | - Chun Shan
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, No.145 West Changle road, Xi'an, 710032, China
| | - Lei Wang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, No.145 West Changle road, Xi'an, 710032, China
| | - Chenping Zhang
- Shanghai Key Laboratory of Stomatology, Department of Oral & Maxillofacial-Head & Neck Oncology, School of Stomatology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No.639 Zhizaoju Road, Shanghai, 200011, China
| | - Xi Yang
- Shanghai Key Laboratory of Stomatology, Department of Oral & Maxillofacial-Head & Neck Oncology, School of Stomatology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No.639 Zhizaoju Road, Shanghai, 200011, China
| | - Xinjie Yang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, No.145 West Changle road, Xi'an, 710032, China.
| | - Delin Lei
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, No.145 West Changle road, Xi'an, 710032, China.
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Chen J, He Y, Shan C, Pan Q, Li M, Xia D. Topical combined application of dexamethasone, vitamin C, and β-sodium glycerophosphate for healing the extraction socket in rabbits. Int J Oral Maxillofac Surg 2015; 44:1317-23. [PMID: 26149940 DOI: 10.1016/j.ijom.2015.06.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 05/07/2015] [Accepted: 06/16/2015] [Indexed: 10/23/2022]
Abstract
An osteogenic inducer (OI) consisting of dexamethasone, vitamin C, and β-sodium glycerophosphate has the capacity to induce bone formation in vitro. The aim of this study was to assess the efficacy of the application of this OI on extraction socket healing. The bilateral first mandibular premolars were extracted from 75 New Zealand rabbits. Gelatin sponges carrying OI were implanted into the sockets. Sockets undergoing implantation of gelatin sponges alone were also evaluated, as well as non-implantation sockets. Specimens from each group were evaluated radiographically, histologically, and histomorphometrically using haematoxylin-eosin staining. Results showed earlier new bone formation and higher bone quality and quantity in the OI group compared to the other groups, and the differences were significant at 2, 4, 8, and 12 weeks postoperative. The OI significantly reduced the absorption of alveolar bone in terms of height; however, changes in the width were not significantly different between the three groups (P>0.05). The OI was shown to have a positive effect on healing of the tooth extraction sockets, was inexpensive, and was convenient to use during the operational procedure; therefore this could represent a promising implant material for human clinical application.
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Affiliation(s)
- J Chen
- Orofacial Reconstruction and Regeneration Laboratory, Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Luzhou Medical College, Luzhou, China
| | - Y He
- Orofacial Reconstruction and Regeneration Laboratory, Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Luzhou Medical College, Luzhou, China.
| | - C Shan
- Department of Stomatology, Yongchuan Hospital, Chongqing Medical University, Chongqing, China
| | - Q Pan
- Orofacial Reconstruction and Regeneration Laboratory, Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Luzhou Medical College, Luzhou, China
| | - M Li
- Orofacial Reconstruction and Regeneration Laboratory, Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Luzhou Medical College, Luzhou, China
| | - D Xia
- Orofacial Reconstruction and Regeneration Laboratory, Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Luzhou Medical College, Luzhou, China
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Zhang Y, Yang J, Zheng M, Wang Y, Ren H, Xu Y, Yang Y, Cheng J, Han F, Yang X, Chen L, Shan C, Chang B. Clinical Characteristics and Predictive Factors of Subclinical Diabetic Nephropathy. Exp Clin Endocrinol Diabetes 2015; 123:132-8. [DOI: 10.1055/s-0034-1396810] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Y. Zhang
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - J. Yang
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - M. Zheng
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - Y. Wang
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - H. Ren
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - Y. Xu
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - Y. Yang
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - J. Cheng
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - F. Han
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - X. Yang
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - L. Chen
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - C. Shan
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
| | - B. Chang
- Department of Nephropathy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, the Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China
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Jia S, Yang X, Song W, Wang L, Fang K, Hu Z, Yang Z, Shan C, Lei D, Lu B. Incorporation of osteogenic and angiogenic small interfering RNAs into chitosan sponge for bone tissue engineering. Int J Nanomedicine 2014; 9:5307-16. [PMID: 25429217 PMCID: PMC4242407 DOI: 10.2147/ijn.s70457] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Engineered bone substitutes are being extensively explored in response to growing demand. However, the angiogenesis that occurs during bone formation is often overlooked in scaffold design. In this novel study, we incorporated two small interfering RNAs (siRNAs), ie, small interfering RNA targets casein kinase 2 interaction protein 1 (siCkip-1) and small interfering RNA targets soluble VEGF receptor 1 (siFlt-1), which can promote osteogenesis and angiogenesis, into a chitosan sponge. This scaffold could maintain siRNAs for over 2 weeks in neutral phosphate-buffered saline and degraded rapidly in the presence of lysozyme. The chitosan sponge with siCkip-1 and siFlt-1 in vitro bioactivity was investigated using mesenchymal stem cells. Target genes were significantly suppressed, and osteocalcin, alkaline phosphatase, and vascular endothelial growth factor were significantly upregulated. Alizarin Red staining revealed that mineralization of the extracellular matrix was markedly enhanced by dual transfection. Further analysis by immunofluorescence confirmed that the siRNA-modified scaffold simultaneously improved the expression of osteocalcin and von Willebrand factor. In vivo testing in a skull critical-size defect model showed marked bone regeneration in rats treated with siCkip-1 and siFlt-1. In conclusion, chitosan sponge containing osteogenic and angiogenic siRNAs may be used as a scaffold for bone regeneration. The dual siRNA concept may also be useful in the biofunctionalization of other materials.
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Affiliation(s)
- Sen Jia
- Department of Oral and Maxillofacial Surgery, Fourth Military Medical University, Xi'an People's Republic of China
| | - Xinjie Yang
- Department of Oral and Maxillofacial Surgery, Fourth Military Medical University, Xi'an People's Republic of China
| | - Wen Song
- Department of Prosthetic Dentistry, Fourth Military Medical University, Xi'an People's Republic of China
| | - Lei Wang
- Department of Oral and Maxillofacial Surgery, Fourth Military Medical University, Xi'an People's Republic of China
| | - Kaixiu Fang
- Department of Implant Dentistry, School of Stomatology, State Key Laboratory of Military Stomatology, Fourth Military Medical University, Xi'an People's Republic of China
| | - Zhiqiang Hu
- Department of Oral and Maxillofacial Surgery, Fourth Military Medical University, Xi'an People's Republic of China ; Department of Otorhinolaryngology, No 113 Hospital of People's Liberation Army, Ningbo, People's Republic of China
| | - Zihui Yang
- Department of Oral and Maxillofacial Surgery, Fourth Military Medical University, Xi'an People's Republic of China
| | - Chun Shan
- Department of Oral and Maxillofacial Surgery, Fourth Military Medical University, Xi'an People's Republic of China
| | - Delin Lei
- Department of Oral and Maxillofacial Surgery, Fourth Military Medical University, Xi'an People's Republic of China
| | - Bin Lu
- Department of Oral and Maxillofacial Surgery, Fourth Military Medical University, Xi'an People's Republic of China
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Jia S, Wang W, Hu Z, Shan C, Wang L, Wu B, Yang Z, Yang X, Lei D. BDNF mediated TrkB activation contributes to the EMT progression and the poor prognosis in human salivary adenoid cystic carcinoma. Oral Oncol 2014; 51:64-70. [PMID: 25456007 DOI: 10.1016/j.oraloncology.2014.10.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 10/03/2014] [Accepted: 10/09/2014] [Indexed: 12/17/2022]
Abstract
BACKGROUND The aim of the present study was to investigate whether the expression of Brain-Derived Neurotrophic Factor (BDNF) and its receptor Tropomyosin-related kinase B (TrkB) is correlated with the clinical progression of salivary adenoid cystic carcinoma (SACC) and whether the BDNF/TrkB axis is associated with the induction of epithelial-mesenchymal transition (EMT) in SACC cells. METHOD The expression of BDNF, TrkB, and E-cadherin (an EMT biomarker) in 76 primary SACC specimens and 20 normal salivary gland tissues was analyzed by immunohistochemistry. Additionally, the expression of BDNF, TrkB, and E-cadherin in SACC cell lines (SACC-83 and SACC-LM) was analyzed by RT-PCR and Western blotting. The biological role of the BDNF/TrkB axis in the EMT progression of SACC was evaluated after treatment with increased levels of BDNF and by inhibiting TrkB activity in SACC-83 cell line. The progression of SACC cells through EMT was assessed by RT-PCR, Western blotting, photography, migration and invasion assays. RESULTS Elevated expression of TrkB (92.1%) and BDNF (89.5%), and downregulated expression of E-cadherin (47.4%) was found in SACC specimens, which was significantly correlated with the invasion and metastasis in SACC (P<0.05). The high expression of TrkB and the low expression of E-cadherin was significantly correlated with the poor prognosis of SACC patients (P<0.05). The expression of TrkB was inversely correlated with the expression of E-cadherin in both SACC cases and cell lines (P<0.05). Increasing BDNF levels after treatment with exogenous recombinant human BDNF (rhBDNF) at 100 ng/ml significantly promoted the activation of TrKB and the progression of EMT in SACC cells. While obstruction of TrkB by its inhibitor, k252a (100 nM), significantly inhibited the EMT progression of SACC cells. CONCLUSIONS These results suggest that BDNF-mediated TrkB activation contributes to the EMT progression and the poor prognosis in SACC. The present study demonstrated that the BDNF/TrkB axis promotes the migration and invasion of SACC cells via EMT in vitro. Targeting the inactivation of the BDNF/TrkB axis may be a potential strategy for the treatment of SACC.
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Affiliation(s)
- Sen Jia
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Weixi Wang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China; No. 150 Hospital of PLA, Luoyang 471031, China
| | - Zhiqiang Hu
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Chun Shan
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Lei Wang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Baolei Wu
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Zihui Yang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Xinjie Yang
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China.
| | - Delin Lei
- State Key Laboratory of Military Stomatology, Department of Oral and Maxillofacial Surgery, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China.
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Fang Z, Li S, Gong Y, Liao W, Tian S, Shan C, He C. Comparison of catalytic activity of carbon-based AgBr nanocomposites for conversion of CO2 under visible light. Journal of Saudi Chemical Society 2014. [DOI: 10.1016/j.jscs.2013.08.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Shan C, Yin GQ, Wu P. Efficacy and safety of tenofovir in a kidney transplant patient with chronic hepatitis B and nucleos(t)ide multidrug resistance: a case report. J Med Case Rep 2014; 8:281. [PMID: 25146249 PMCID: PMC4155764 DOI: 10.1186/1752-1947-8-281] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 06/26/2014] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION Five nucleos(t)ide analogs are used to treat chronic hepatitis B. Ideal nucleos(t)ide analog therapy in chronic hepatitis B patients with kidney transplantation must ensure virological suppression and minimize renal injury. However, resistance to nucleos(t)ide analogs frequently results in virological breakthrough, hepatitis flare, and complicated deterioration of the transplanted kidney. Inappropriate rescue therapy for drug resistance may subsequently cause hepatitis B virus multidrug resistance. Currently, tenofovir is used to treat chronic hepatitis B patients with kidney transplantation. In the field, we first reported combination therapy with tenofovir plus entecavir in a kidney transplant chronic hepatitis B patient with nucleos(t)ide analog multidrug resistance. CASE PRESENTATION A 50-year-old Chinese man with chronic hepatitis B and kidney transplantation received nucleos(t)ide analog therapy with sequential monotherapy and combination therapy. Virological parameters, hepatic enzymology and renal function were monitored. Drug-resistance mutations were detected by sequence analysis. Our patient received sequential nucleos(t)ide analog monotherapy and inappropriate combination therapy during 132 months, which caused multidrug resistance and renal functional injury. Entecavir plus adefovir was administered in month 106, resulting in decreased hepatitis B virus load, normal hepatic function, and stabilized creatinine clearance. As a result of rebounded viral load and significantly declining creatinine clearance, tenofovir plus entecavir was administered in month 133. After eight weeks, undetectable hepatitis B virus DNA, normal hepatic function and improved creatinine clearance were present. Compared with combination therapy with adefovir plus entecavir, tenofovir plus entecavir showed a potent antiviral effect for multidrug resistance and minimized renal injury. CONCLUSIONS In chronic hepatitis B patients with kidney transplantation, sequential monotherapy with antiviral agents with low barriers to resistance should be avoided, and initial therapy with entecavir is a better option. Combination therapy with tenofovir plus entecavir in this setting with multidrug resistance is safe and effective.
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Affiliation(s)
- Chun Shan
- Department of Infectious Disease, Nanjing Zhong-Da Hospital, Southeast University School of Medicine, 87 Ding Jia Qiao, Nanjing 210009, Jiangsu, China
| | - Guo Qing Yin
- Department of Infectious Disease, Nanjing Zhong-Da Hospital, Southeast University School of Medicine, 87 Ding Jia Qiao, Nanjing 210009, Jiangsu, China
| | - Pei Wu
- Department of Infectious Disease, Nanjing Zhong-Da Hospital, Southeast University School of Medicine, 87 Ding Jia Qiao, Nanjing 210009, Jiangsu, China
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Zhang Q, Shan C, Wu P, Huang XE. Clinical Value of Dual-phase18F-FDG SPECT with Serum Procalcitonin for Identification of Etiology in Tumor Patients with Fever of Unknown Origin. Asian Pac J Cancer Prev 2014; 15:683-6. [DOI: 10.7314/apjcp.2014.15.2.683] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Li G, Liu L, Shan C, Cheng Q, Budhraja A, Zhou T, Cui H, Gao N. RhoA/ROCK/PTEN signaling is involved in AT-101-mediated apoptosis in human leukemia cells in vitro and in vivo. Cell Death Dis 2014; 5:e998. [PMID: 24434521 PMCID: PMC4040709 DOI: 10.1038/cddis.2013.519] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 11/11/2013] [Accepted: 11/25/2013] [Indexed: 12/22/2022]
Abstract
R-(-)-gossypol acetic acid (AT-101) is a natural cottonseed product that exhibits anticancer activity. However, the molecular mechanism behind the antileukemic activity of AT-101 has not been well characterized. In this study, we investigated how AT-101 induces apoptosis in human leukemia cells. Exposure to AT-101 significantly increased apoptosis in both human leukemia cell lines and primary human leukemia cells. This increase was accompanied by the activation of caspases, cytochrome c release, Bcl2-associated X protein (Bax) translocation, myeloid cell leukemia-1 (Mcl-1) downregulation, Bcl-2-associated death promoter (Bad) dephosphorylation, Akt inactivation, and RhoA/Rho-associated coiled-coil containing protein kinase 1/phosphatase and tensin homolog (RhoA/ROCK1/PTEN) activation. RhoA, rather than caspase-3 cleavage, mediated the cleavage/activation of ROCK1 that AT-101 induced. Inhibiting RhoA and ROCK1 activation by C3 exoenzyme (C3) and Y27632, respectively, attenuated the ROCK1 cleavage/activation, PTEN activity, Akt inactivation, Mcl-1 downregulation, Bad dephosphorylation, and apoptosis mediated by AT-101. Knocking down ROCK1 expression using a ROCK1-specific siRNA also significantly abrogated AT-101-mediated apoptosis. Constitutively active Akt prevented the AT-101-induced Mcl-1 downregulation, Bad dephosphorylation, and apoptosis. Conversely, AT-101 lethality was potentiated by the phosphatidylinositol 3-kinase inhibitor LY294002. In vivo, the tumor growth inhibition caused by AT-101 was also associated with RhoA/ROCK1/PTEN activation and Akt inactivation in a mouse leukemia xenograft model. Collectively, these findings suggest that AT-101 may preferentially induce apoptosis in leukemia cells by interrupting the RhoA/ROCK1/PTEN pathway, leading to Akt inactivation, Mcl-1 downregulation, Bad dephosphorylation, and Bax translocation, which culminate in mitochondrial injury and apoptosis.
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Affiliation(s)
- G Li
- Department of Pharmacognosy, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - L Liu
- Department of Pharmacognosy, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - C Shan
- Department of Pharmacognosy, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - Q Cheng
- Department of Pharmacognosy, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - A Budhraja
- Graduate Center for Toxicology, College of Medicine, University of Kentucky, Lexington, KY, USA
| | - T Zhou
- Department of Pharmacognosy, College of Pharmacy, Third Military Medical University, Chongqing, China
| | - H Cui
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China
| | - N Gao
- Department of Pharmacognosy, College of Pharmacy, Third Military Medical University, Chongqing, China
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Sun L, Yue H, Sun B, Han L, Qi M, Tian Z, Lu S, Shan C, Luo J, Fan Y, Li S, Dong M, Zuo X, Zhang Y, Lin W, Xu J, Heng Y. Estimation of birth population-based perinatal-neonatal mortality and preterm rate in China from a regional survey in 2010. J Matern Fetal Neonatal Med 2013; 26:1641-8. [PMID: 23570293 PMCID: PMC3812698 DOI: 10.3109/14767058.2013.794208] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective: To estimate birth population-based perinatal-neonatal mortality and preterm rate in China from a regional survey in 2010. Study design: Data of total births in 2010 obtained from 151 level I–III hospitals in Huai’an, Jiangsu, were prospectively collected and analyzed. Results: From 61 227 birth registries (including 60 986 live births and 241 stillbirths), we derive a birth rate of 11.3‰ (of 5.4 million regional population), a male-to-female ratio of 116:100 and valid data from 60 615 newborns. Mean birth weight (BW) was 3441 ± 491 g with 13.6% macrosomia. Low BW was 2.8% (1691/60 372) with 8.83% mortality. Preterm rate was 3.72% (2239/60 264) with 7.61% mortality. Cesarean section rate was 52.9% (31 964/60 445), multiple pregnancy 1.8% (1088/60 567) and birth defects 6.7‰ (411/61 227). There were 97.4% healthy newborns and 2.2% (1298) requiring hospitalized after birth. The perinatal mortality was 7.7‰ (471/61 227, including 241 stillbirths, 230 early neonatal deaths). The neonatal mortality was 4.4‰ (269/60 986). The main causes of neonatal death were birth asphyxia (24.5%), respiratory diseases (21.5%), prematurity related organ dysfunction (18.5%) and congenital anomalies (7.7%), whereas incidence of congenital heart disease and respiratory distress syndrome was 8.6‰ and 6.1‰, respectively. Conclusions: This regional birth population-based data file contains low perinatal-neonatal mortality rates, associated with low proportion of LBW and preterm births, and incidences of major neonatal disease, by which we estimate, in a nationwide perspective, in 16 million annual births, preterm births should be around 800 000, perinatal and neonatal mortality may be 128 000–144 000 and 80 000–96 000, respectively, along with 100 000 respiratory distress syndrome.
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Affiliation(s)
- L Sun
- Departments of Neonatology, Children's Hospital and the Institutes of Biomedical Sciences, Fudan University, and the Laboratory of Neonatal Medicine, Ministry of Health , Shanghai , P.R. China
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Popa M, Rothkrantz L, Shan C, Gritti T, Wiggers P. Semantic assessment of shopping behavior using trajectories, shopping related actions, and context information. Pattern Recognit Lett 2013. [DOI: 10.1016/j.patrec.2012.04.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhou T, Li G, Cao B, Liu L, Cheng Q, Kong H, Shan C, Huang X, Chen J, Gao N. Downregulation of Mcl-1 through inhibition of translation contributes to benzyl isothiocyanate-induced cell cycle arrest and apoptosis in human leukemia cells. Cell Death Dis 2013; 4:e515. [PMID: 23449451 PMCID: PMC3734843 DOI: 10.1038/cddis.2013.41] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Benzyl isothiocyanate (BITC) is one of the compounds of ITCs' family that has attracted a great deal of interest because of its ability to exhibit anticancer activity. In this study, we investigated the effects of BITC on cell cycle arrest and apoptosis in human leukemia cell lines, primary leukemia cells, and nude mice Jurkat xenograft. Exposure of Jurkat cells to BITC resulted in dose- and time-dependent increase in apoptosis, caspase activation, cytochrome c release, nuclear apoptosis-inducing factor (AIF) accumulation, Bcl2-associated X protein (Bax) translocation, and myeloid cell leukemia-1 (Mcl-1) downregulation. Treatment with these cells also resulted in cell cycle arrest at the G2/M phase. The G2/M-arrested cells are more sensitive to undergoing Mcl-1 downregulation and apoptosis mediated by BITC. BITC downregulates Mcl-1 expression through inhibition of translation, rather than through a transcriptional, post-translational, or caspase-dependent mechanism. Dephosphorylation of eukaryotic initiation factor 4G could contribute to the inhibition of Mcl-1 translation mediated by BITC. Furthermore, ectopic expression of Mcl-1 substantially attenuates BITC-mediated lethality in these cells, whereas knockdown of Mcl-1 through small interfering RNA significantly enhances BITC-mediated lethality. Finally, administration of BITC markedly inhibited tumor growth and induced apoptosis in Jurkat xenograft model in association with the downregulation of Mcl-1. Taken together, these findings represent a novel mechanism by which agents targeting Mcl-1 potentiate BITC lethality in transformed and primary human leukemia cells and inhibitory activity of tumor growth of Jurkat xenograft model.
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Affiliation(s)
- T Zhou
- Department of Pharmacognosy, School of Pharmacy, 3rd Military Medical University, Chongqing, China
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Su M, He C, Zhu L, Sun Z, Shan C, Zhang Q, Shu D, Qiu R, Xiong Y. Enhanced adsorption and photocatalytic activity of BiOI-MWCNT composites towards organic pollutants in aqueous solution. J Hazard Mater 2012; 229-230:72-82. [PMID: 22709852 DOI: 10.1016/j.jhazmat.2012.05.061] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 05/18/2012] [Accepted: 05/19/2012] [Indexed: 05/21/2023]
Abstract
BiOI-MWCNT composites, with high absorption and visible-light photocatalytic performance, were synthesized by a solvothermal process, in which ethylene glycol (EG) participated in the reaction. Synthesized BiOI-MWCNT composites were characterized by X-ray diffraction (XRD), diffuse reflectance spectra (DRS), scanning electronic microscopy (SEM), transmission electron microscopy (TEM), and electrochemical impedance spectroscopy (EIS). The results showed that the prepared BiOI-MWCNT composites exhibit strong adsorption ability with the increase of doped MWCNT amount. The efficiency of AOII degradation increased with the increase of MWCNT amount from 0.5 to 1.0% significantly. The photocatalytic degradation of AOII using BiOI-MWCNT composites under visible light (λ>400 nm) was almost completed within 180 min. BiOI-MWCNT composites maintained its degradation efficiency and durability after being reused for 5 batch runs. The high adsorption ability and degradation efficiency of BiOI-MWCNT for AOII was attributed to the sorption of doped MWCNT and the effective charge transfer from excited BiOI to MWCNTs, respectively. Moreover, organic compounds as intermediates of the degradation process were identified by LC/MS.
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Affiliation(s)
- Minhua Su
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China
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Zhang S, Shan C, Kong G, Du Y, Ye L, Zhang X. MicroRNA-520e suppresses growth of hepatoma cells by targeting the NF-κB-inducing kinase (NIK). Oncogene 2012; 31:3607-20. [PMID: 22105365 DOI: 10.1038/onc.2011.523] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 10/11/2011] [Accepted: 10/14/2011] [Indexed: 02/07/2023]
Abstract
MicroRNAs (miRNAs) are small, non-coding RNAs that can act as oncogenes or tumor suppressor genes in human cancer. Emerging evidence indicates that deregulation of miRNAs contributes to the hepatocarcinogenesis. In the present study, we demonstrated that the levels of miR-520e were dramatically decreased in examined hepatoma cell lines and clinical hepatocellular carcinoma (HCC) tissues. Moreover, we found that DNA hypermethylation in the upstream region of miR-520e resulted in the downregulation of miR-520e. Next, we demonstrated that introduction of miR-520e dramatically suppressed the growth of hepatoma cells in vitro and in vivo, whereas silencing the expression of miR-520e by anti-miR-520e resulted in a promoted cell proliferation, suggesting that miR-520e may be a novel tumor suppressor. Further studies revealed that NF-κB-inducing kinase (NIK) was one of the direct target genes of miR-520e, as miR-520e directly bound to the 3'untranslated region of NIK, which reduced the expression of NIK at the levels of mRNA and protein. Moreover, silencing of NIK was able to inhibit the growth of hepatoma cells, similar to the effect of miR-520e overexpression on growth of hepatoma cells. Meanwhile, the knockdown of NIK expression reversed the enhanced proliferation mediated by anti-miR-520e. In addition, miR-520e significantly decreased the phosphorylation of ERK1/2 (p-ERK1/2) and depressed the transcriptional activity and nuclear translocation of nuclear factor κB (NF-κB) (p65). These results suggest that miR-520e suppresses the growth of hepatoma cells by targeting NIK involving the NIK/p-ERK1/2/NF-κB signaling pathway. Finally, we showed that the intratumoral injection with miR-520e was able to directly repress the growth of hepatoma cells in the nude mice. Thus, our finding provides new insight into the mechanism of hepatocarcinogenesis, indicating a therapeutic potential of miR-520e in the treatment of HCC.
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Affiliation(s)
- S Zhang
- Department of Cancer Research, Key Laboratory of Molecular Microbiology and Technology of Ministry of Education, Institute For Molecular Biology, College of Life Sciences, Nankai University, Tianjin, PR China
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Zhang H, Shan C, Hua Z, Zhao P, Zhang H. Treatment of Chronic Idiopathic Urticaria with Levamisole: A Multicentre, Randomized, Double-Blind, Controlled Trial. J Int Med Res 2009; 37:1167-72. [PMID: 19761700 DOI: 10.1177/147323000903700422] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The objective of this study was to evaluate the efficacy of treating chronic idiopathic urticaria (CIU) with levamisole in combination with levocetirizine. This was a multicentre, randomized, double-blind, controlled trial that included 132 patients with active CIU who were treated for 6 weeks with either levocetirizine alone (control group; n = 65) or levamisole plus levocetirizine (treatment group; n = 67). Response to therapy was evaluated by measuring the efficacy rate. After 2 weeks of treatment, there was no significant difference in the efficacy rate between the treatment and control groups (54.84% and 42.37%, respectively). After 6 weeks of treatment, a statistically significant difference in the efficacy rate was observed between the groups (76.27% and 54.39% for the treatment and control groups, respectively). This study demonstrated that a combination of levamisole plus levocetirizine is more effective than levocetirizine alone and potentially provides a new, promising approach to the treatment of CIU.
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Affiliation(s)
- H Zhang
- Affiliated Yancheng Hospital, Medical College of Southeast University, Yancheng, China
| | - C Shan
- Affiliated Yancheng Hospital, Medical College of Southeast University, Yancheng, China
| | - Z Hua
- The Second Affiliated Hospital, Nantong University, Nantong, China
| | - P Zhao
- Affiliated Jiangyin Hospital, Medical College of Southeast University, Jiangyin, China
| | - H Zhang
- Xinghua Traditional Chinese Hospital, Xinghua, China
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Abstract
Temperature data from the unsaturated zone (UZ) at Yucca Mountain are analyzed to estimate percolation-flux rates and overall heat flux. A multilayer, one-dimensional analytical solution is presented for determining percolation flux from temperature data. Case studies have shown that the analytical solution agrees very well with results from the numerical code, TOUGH2. The results of the analysis yield percolation fluxes in the range from 0 to 20 mm/year for most of the deep boreholes. This range is in good agreement with the results of infiltration studies at Yucca Mountain. Percolation flux for the shallower boreholes, however, cannot be accurately determined from temperature data alone because large gas flow in the shallow system alters the temperature profiles. Percolation-flux estimates for boreholes located near or intersecting major faults are significantly higher than those for other boreholes. These estimates may be affected by gas flow in the faults.
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Affiliation(s)
- G S Bodvarsson
- Lawrence Berkeley National Laboratory, Earth Sciences Division, 1 Cyclotron Road, MS 90-1116, Berkeley, CA 94720, USA.
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