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Xu ZH, Dang Y, Dong Y, Dong CY, Liu Y, Chen X, Yao Z, Shi JP. Anti-hepatocellular carcinoma activity of Sorbaria sorbifolia by regulating VEGFR and c-Met/apoptotic pathway. J Ethnopharmacol 2024; 324:117758. [PMID: 38246481 DOI: 10.1016/j.jep.2024.117758] [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: 10/21/2023] [Revised: 12/02/2023] [Accepted: 01/11/2024] [Indexed: 01/23/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sorbaria sorbifolia (SS) is a traditional Chinese medicine (TCM) that has been employed anti-hepatocellular carcinoma (HCC) for over 2000 years; yet, its underlying mechanism is still not fully understood. AIM OF THE STUDY In this study, we evaluated the anti-HCC effect on the freeze-dried powder of the water extract of SS (FDSS) by inhibiting tumor-induced neovascularization, and promoting apoptosis, and elucidated the underlying mechanisms. MATERIALS AND METHODS HCC cell lines (HepG2 and Huh7 cells) and HepG2 xenograft tumors in zebrafish were employed as in vivo and in vitro models, respectively, to evaluate the anti- HCC-indued neovascularization and apoptosis. In HCC cell lines, CCK-8 assay, wound-healing assay, transwell assay, cell circle assay, apoptosis assay, transmission electron microscopy, and co-culture assay were performed in vitro; in HepG2 xenograft tumor-zebrafish, tumor growth inhibition assay, hematoxylin and eosin (HE) staining, xenograft tumor-zebrafish apoptosis assay, and HCC-indued neovascularization assay were performed to evaluate the effect of FDSS on biological behavior of tumor, HCC-indued neovascularization, and apoptosis. The expression of VEGFR and c-Met/apoptotic pathway-related proteins was detected by western blotting analysis. Assays for c-Met and VEGFR activation were conducted to assess the impact of FDSS in either agonistic or inhibitory roles on these receptor proteins. RESULTS The findings from our study revealed that FDSS effectively suppresses the proliferation, migration, and invasion of HepG2 and Huh7 cells, as well as inhibiting tumor growth in the HepG2 xenograft zebrafish model by downregulating the expression of p-Met and p-AKT proteins. FDSS decreased the tumor growth associated with promoting apoptosis, including arresting HepG2 and Huh7 cells cycle at G0/G1phase, increasing apoptotic cell numbers and apoptotic bodies in cancer cells, and increasing the apoptotic fluorescence of xenograft tumor zebrafish by downregulating Bcl-2 proteins and upregulating Bax, caspase-9, and caspase-3 levels. We also found that FDSS can inhibit HCC-induced neovascularization and regulate VEGFR. Using an agonist or inhibitor of c-Met and VEGFR in HepG2 cells, we discovered that FDSS can downregulate c-Met and VEGFR protein expression. CONCLUSION FDSS exerts an anti-HCC effect by inhibiting HCC-indued neovascularization and pro-apoptosis through the inhibition of the action of VEGFR and c-Met/apoptotic pathway.
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Affiliation(s)
- Zhao-Hua Xu
- College of Traditional Chinese Medicine, Inner Mongolia Medical College, Hohhot, China.
| | - Ying Dang
- College of Traditional Chinese Medicine, Inner Mongolia Medical College, Hohhot, China.
| | - Yu Dong
- College of Traditional Chinese Medicine, Inner Mongolia Medical College, Hohhot, China.
| | - Chong-Yang Dong
- College of Traditional Chinese Medicine, Inner Mongolia Medical College, Hohhot, China.
| | - Yu Liu
- College of Traditional Chinese Medicine, Inner Mongolia Medical College, Hohhot, China.
| | - Xu Chen
- College of Traditional Chinese Medicine, Inner Mongolia Medical College, Hohhot, China.
| | - Zhi Yao
- College of Traditional Chinese Medicine, Inner Mongolia Medical College, Hohhot, China.
| | - Jian-Ping Shi
- College of Traditional Chinese Medicine, Inner Mongolia Medical College, Hohhot, China.
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Wang X, Zhang J, Ma Z, Yang Y, Dang Y, Cao S, Shi X, Ouyang C, Pan J, Hu X. Association and interactions between mixed exposure to trace elements and the prevalence of kidney stones: a study of NHANES 2017-2018. Front Public Health 2023; 11:1251637. [PMID: 37965524 PMCID: PMC10642183 DOI: 10.3389/fpubh.2023.1251637] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/09/2023] [Indexed: 11/16/2023] Open
Abstract
Background The association between exposure to trace elements mixture and the prevalence of kidney stones and the interactions between elements are unclear. The aim of this study was to explore the association between exposure to trace elements mixture and the prevalence of kidney stones and the interactions between the elements. Methods A total of 1,244 participants (139 kidney stone formers and 1,105 non-stone former participants) in NHANES 2017-2018 were included. The exposure to trace elements was evaluated by measuring their concentration in urine samples. Three methods, Logistic regression, quantile-based g computation (qgcomp), and Bayesian kernel machine regression (BKMR), were used for analysis. Results According to the results from qgcomp and BKMR, a negative association was found between exposure to the 13 trace elements and the prevalence of kidney stones [OR = 0.50 (0.32, 0.78)]. Subgroup analysis revealed that Co, As, and iodine in the whole population, Co, As, and Ni in males, and Cs, iodine, and Sb in females, were most strongly associated with kidney stones. Kidney stone was found to be positively correlated with Co and negatively correlated with the other elements. Besides, there were significant interactions between Ni and Pb in the whole population, Co and iodine in males, and Pb and iodine in females. Conclusion There was a negative association between exposure to the mixture of 13 trace elements and the prevalence of kidney stones.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Xiaobin Hu
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, Lanzhou, China
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Dang Y, Yang Y, Cao S, Zhang J, Wang X, Lu J, Liang Q, Hu X. Exploring the factors influencing the use of health services by people with diabetes in Northwest China: an example from Gansu Province. J Health Popul Nutr 2023; 42:64. [PMID: 37420259 DOI: 10.1186/s41043-023-00402-5] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 06/18/2023] [Indexed: 07/09/2023]
Abstract
BACKGROUND Diabetes is associated with high morbidity, mortality and quality-of-life impairment in patients. In China, the number of people suffering from diabetes ranks first in the world. Gansu Province is located in northwest China and is an economically underdeveloped region of China. By analyzing the level of health service utilization of people with diabetes in Gansu Province, the degree of equity in health service utilization and its influencing factors were studied to provide scientific data to support the promotion of health equity for people with diabetes and the introduction of relevant policies by relevant authorities. METHODS A sample of 282 people with diabetes who were 15 years old and above was chosen by multi-stage stratified sampling method. A structured questionnaire survey was conducted via face-to-face interviews. Random forest and logistic regression analysis were used to demonstrate the effects of the explanatory variables on health seeking behaviors from predisposing, enabling and need variables. The concentration index was used to indicate the equity of health service utilization across households of different economic levels. RESULTS The outpatient rate for the diabetic population surveyed was 92.91%, with 99.87% of urban patients, higher than the 90.39% of rural patients. The average number of hospital days per person was 3.18 days, with 5.03 days per person in urban areas, which was higher than the 2.51 days per person in rural areas. The study showed that the factors most likely to influence patients to seek outpatient services were frequency of taking diabetic medication, whether or not they were contracted to a household doctor, and living environment; the top three factors most likely to influence patients with diabetes to seek inpatient services were number of non-communicable chronic disease, self-assessment of health status, medical insurance. The concentration index for outpatient service utilization and inpatient service utilization were - 0.241 and 0.107, respectively, indicating that outpatient services were concentrated on patients at lower income levels and patients at higher income levels tended to favor inpatient services. CONCLUSION This study found that the low level of health care resources available to people with diabetes, whose health status is suboptimal, makes it difficult to meet their health needs. Patients' health conditions, comorbidities of people with diabetes, and the level of protection were still important factors that hindered the use of health services. It is necessary to promote the rational use of health services by diabetic patients and further improve the corresponding policies to achieve the goal of chronic disease prevention and control in "Health China 2030".
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Affiliation(s)
- Ying Dang
- Department of Epidemiology and Statistics, School of Public Health, Lanzhou University, Lanzhou, Gansu, China
| | - Yinan Yang
- Department of Pediatric Cardiology, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Shuting Cao
- Department of Epidemiology and Statistics, School of Public Health, Lanzhou University, Lanzhou, Gansu, China
| | - Jia Zhang
- Department of Epidemiology and Statistics, School of Public Health, Lanzhou University, Lanzhou, Gansu, China
| | - Xiao Wang
- Department of Epidemiology and Statistics, School of Public Health, Lanzhou University, Lanzhou, Gansu, China
| | - Jie Lu
- Health Statistics Information Center of Gansu Province, Lanzhou, Gansu Province, China
| | - Qijun Liang
- Gansu Medical Insurance Service Centre, Lanzhou, Gansu Province, China.
| | - Xiaobin Hu
- Department of Epidemiology and Statistics, School of Public Health, Lanzhou University, Lanzhou, Gansu, China.
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Alektiar SN, Han J, Dang Y, Rubel CZ, Wickens ZK. Radical Hydrocarboxylation of Unactivated Alkenes via Photocatalytic Formate Activation. J Am Chem Soc 2023; 145:10991-10997. [PMID: 37186951 PMCID: PMC10636750 DOI: 10.1021/jacs.3c03671] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Herein we disclose a strategy to promote the hydrocarboxylation of unactivated alkenes using photochemical activation of formate salts. We illustrate that an alternative initiation mechanism circumvents the limitations of prior approaches and enables hydrocarboxylation of this challenging substrate class. Specifically, we found that accessing the requisite thiyl radical initiator without an exogenous chromophore eliminates major byproducts that have plagued attempts to exploit similar reactivity for unactivated alkene substrates. This redox-neutral method is technically simple to execute and effective across a broad range of alkene substrates. Feedstock alkenes, such as ethylene, are hydrocarboxylated at ambient temperature and pressure. A series of radical cyclization experiments indicate how the reactivity described in this report can be diverted by more complex radical processes.
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Affiliation(s)
- Sara N. Alektiar
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Jimin Han
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Y Dang
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Camille Z. Rubel
- Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| | - Zachary K. Wickens
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
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Zhang J, Wang X, Ma Z, Dang Y, Yang Y, Cao S, Ouyang C, Shi X, Pan J, Hu X. Associations of urinary and blood cadmium concentrations with all-cause mortality in US adults with chronic kidney disease: a prospective cohort study. Environ Sci Pollut Res Int 2023; 30:61659-61671. [PMID: 36933131 DOI: 10.1007/s11356-023-26451-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 03/10/2023] [Indexed: 05/10/2023]
Abstract
Epidemiological evidence for the relationship between cadmium exposure and mortality in specific chronic kidney disease (CKD) populations remains scarce. We aimed to explore the relationships between cadmium concentrations in urine and blood and all-cause mortality among CKD patients in the USA. This cohort study was composed of 1825 CKD participants from the National Health and Nutrition Examination Survey (NHANES) (1999-2014) who were followed up to December 31, 2015. All-cause mortality was ascertained by matching the National Death Index (NDI) records. We estimated hazard ratios (HRs) and 95% confidence intervals (CIs) for all-cause mortality in relation to urinary and blood cadmium concentrations by Cox regression models. During an average follow-up period of 82 months, 576 CKD participants died. Compared with the lowest quartiles, HRs (95% CIs) for all-cause mortality associated with the fourth weighted quartiles of urinary and blood cadmium concentrations were 1.75 (1.28 to 2.39) and 1.59 (1.17 to 2.15), respectively. Furthermore, the HRs (95% CIs) for all-cause mortality per ln-transformed IQR increment in cadmium concentrations in urine (1.15 μg/g UCr) and blood (0.95 μg/L) were 1.40 (1.21 to 1.63) and 1.22 (1.07 to 1.40), respectively. Linear concentration-response relationships between urinary and blood cadmium concentrations and all-cause mortality were also found. Our findings suggested that increased cadmium concentrations in both urine and blood significantly contributed to enhanced mortality risk in CKD patients, thus highlighting that efforts to reduce cadmium exposure may reduce mortality risk in high-risk populations with CKD.
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Affiliation(s)
- Jia Zhang
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, No.199, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu Province, China
| | - Xiao Wang
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, No.199, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu Province, China
| | - Zhibin Ma
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, No.199, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu Province, China
| | - Ying Dang
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, No.199, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu Province, China
| | - Yaya Yang
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, No.199, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu Province, China
| | - Shuting Cao
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, No.199, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu Province, China
| | - Changping Ouyang
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, No.199, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu Province, China
| | - Xiaoru Shi
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, No.199, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu Province, China
| | - Jinhua Pan
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, No.199, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu Province, China
| | - Xiaobin Hu
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, No.199, Donggang West Road, Chengguan District, Lanzhou, 730000, Gansu Province, China.
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6
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Dang Y, Yang Y, Yang A, Cao S, Zhang J, Wang X, Lu J, Hu X. Factors influencing catastrophic health expenditure of households with people with diabetes in Northwest China-an example from Gansu Province. BMC Health Serv Res 2023; 23:401. [PMID: 37098618 PMCID: PMC10131345 DOI: 10.1186/s12913-023-09411-w] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 04/17/2023] [Indexed: 04/27/2023] Open
Abstract
BACKGROUND Diabetes is a chronic non-communicable disease that causes a substantial economic burden on diabetic suffers and their households. The aim of this study was to explore the prevalence, equity, and determinants of catastrophic health expenditure (CHE) among households with people with diabetes in Northwest China. METHODS A total of 3,000 households were included in the 6th Health services survey in Gansu Province, China of which 270 households with people with diabetes. The equity of CHE was evaluated by concentration curve and concentration index (CI). We adopted the Pareto chart to analyze the main economic intervals of the occurrence of CHE. Finally, we combined the decision tree and logistic model and analyzed the determinants of the occurrence of CHE. RESULTS The incidence of CHE at 15%, 25% and 40% were 75.19%, 58.89% and 35.19%, respectively. CHE tended to occur in households with a lower economic level, with the phenomenon being more pronounced at Z = 40%. The Pareto chart showed that households in the group with an annual per capita income of 0-740 USD (0-5,000 Chinese Yuan) were most likely to experience CHE. Both decision tree and logistic models suggested that economic level, comorbidities, and small household size were potential risk factors. In addition, the decision tree model also suggested the interaction between the influencing factor of health checks in the past 12 months and the number of chronic diseases. CONCLUSIONS In summary, Households with people with diabetes were more likely to incur CHE. It is essential to focus on low- and middle-income households with people with diabetes, strengthen the management of patients with diabetes, and provide timely health interventions to reduce the occurrence of chronic comorbidity and the risk of CHE in households.
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Affiliation(s)
- Ying Dang
- Department of Epidemiology and Statistics, School of Public Health, Lanzhou University, Lanzhou, Gansu, China
| | - Yinan Yang
- Department of Pediatric Cardiology, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Aimin Yang
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Shuting Cao
- Department of Epidemiology and Statistics, School of Public Health, Lanzhou University, Lanzhou, Gansu, China
| | - Jia Zhang
- Department of Epidemiology and Statistics, School of Public Health, Lanzhou University, Lanzhou, Gansu, China
| | - Xiao Wang
- Department of Epidemiology and Statistics, School of Public Health, Lanzhou University, Lanzhou, Gansu, China
| | - Jie Lu
- Health Statistics Information Center of Gansu Province, Lanzhou, Gansu Province, China
| | - Xiaobin Hu
- Department of Epidemiology and Statistics, School of Public Health, Lanzhou University, Lanzhou, Gansu, China.
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Zhang Y, Gao C, Wang P, Liu Y, Liu Z, Xie W, Xu H, Dang Y, Liu D, Ren Z, Yan S, Wang Z, Hu W, Dong H. High Electron Mobility Hot-Exciton Induced Delayed Fluorescent Organic Semiconductors. Angew Chem Int Ed Engl 2023; 62:e202217653. [PMID: 36631427 DOI: 10.1002/anie.202217653] [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: 11/30/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/13/2023]
Abstract
The development of high mobility emissive organic semiconductors is of great significance for the fabrication of miniaturized optoelectronic devices, such as organic light emitting transistors. However, great challenge exists in designing key materials, especially those who integrates triplet exciton utilization ability. Herein, dinaphthylanthracene diimides (DNADIs), with 2,6-extended anthracene donor, and 3'- or 4'-substituted naphthalene monoimide acceptors were designed and synthesized. By introducing acceptor-donor-acceptor structure, both materials show high electron mobility. Moreover, by fine-tuning of substitution sites, good integration with high solid state photoluminescence quantum yield of 26 %, high electron mobility of 0.02 cm2 V-1 s-1 , and the feature of hot-exciton induced delayed fluorescence were obtained in 4'-DNADI. This work opens a new avenue for developing high electron mobility emissive organic semiconductors with efficient utilization of triplet excitons.
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Affiliation(s)
- Y Zhang
- National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,Department of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - C Gao
- National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - P Wang
- National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,Department of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Y Liu
- Department Key Laboratory of Rubber-Plastics, Ministry of Education/ Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao, 266042, China
| | - Z Liu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - W Xie
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - H Xu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Sciences, Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| | - Y Dang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Sciences, Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| | - D Liu
- National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Z Ren
- State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - S Yan
- Department Key Laboratory of Rubber-Plastics, Ministry of Education/ Shandong Provincial Key Laboratory of Rubber-plastics, Qingdao University of Science & Technology, Qingdao, 266042, China.,State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Z Wang
- Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - W Hu
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Sciences, Tianjin University & Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China.,Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, 350207, China
| | - H Dong
- National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.,Department of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, China
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Meyer E, Kruglov D, Krivic M, Tanveer M, Argaez-Ramirez R, Zhang Y, Briseno Ojeda A, Smirnova K, Alekseev K, Safari Mugisho M, Cimbili B, Farid N, Dang Y, Shahid M, Ensan M, Banar J, Bao H, Matters-Kammerer M, Gustavsson U, Demuynck F, Zwick T, Acar M, Fager C, van der Heijden M, Ivashina M, Caratelli D, Hasselblad M, Ulusoy C, Smolders A, Eriksson K, Johannson M, Maaskant R, Quay R, Floriot D, Bao M, Bronckers L, Fridén J, van Beurden M, de Hon B, Kolitsidas C, Blanco D, Willems F, Eriksson T, Filippi A, Ponzini F, Johannsen U. The state of the art in beyond 5G distributed massive multiple-input multiple-output communication system solutions. Open Res Eur 2022; 2:106. [PMID: 37982077 PMCID: PMC10654493 DOI: 10.12688/openreseurope.14501.1] [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] [Subscribe] [Scholar Register] [Accepted: 07/25/2022] [Indexed: 11/21/2023]
Abstract
Beyond fifth generation (5G) communication systems aim towards data rates in the tera bits per second range, with improved and flexible coverage options, introducing many new technological challenges in the fields of network architecture, signal pro- cessing, and radio frequency front-ends. One option is to move towards cell-free, or distributed massive Multiple-Input Multiple-Output (MIMO) network architectures and highly integrated front-end solutions. This paper presents an outlook on be- yond 5G distributed massive MIMO communication systems, the signal processing, characterisation and simulation challenges, and an overview of the state of the art in millimetre wave antennas and electronics.
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Affiliation(s)
- E. Meyer
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - D. Kruglov
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - M. Krivic
- Keysight Technologies, Kortrijksesteenweg 1093B, 9051 Gent, Belgium
| | - M. Tanveer
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - R. Argaez-Ramirez
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - Y. Zhang
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | | | - K. Smirnova
- Karlsruhe Institute of Technology, 6131 Karlsruhe, Germany
| | - K. Alekseev
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - M. Safari Mugisho
- Fraunhofer Institute for Applied Solid State Physics, IAF, Tullastraße 72, 79108 Freiburg, Germany
| | - B. Cimbili
- Fraunhofer Institute for Applied Solid State Physics, IAF, Tullastraße 72, 79108 Freiburg, Germany
| | - N. Farid
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - Y. Dang
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - M. Shahid
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - M. Ensan
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - J. Banar
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - H. Bao
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - M. Matters-Kammerer
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - U. Gustavsson
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - F. Demuynck
- Keysight Technologies, Kortrijksesteenweg 1093B, 9051 Gent, Belgium
| | - T. Zwick
- Karlsruhe Institute of Technology, 6131 Karlsruhe, Germany
| | - M. Acar
- NXP Semiconductors, High Tech Campus 60, 5656 AG Eindhoven, The Netherlands
| | - C. Fager
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - M. van der Heijden
- NXP Semiconductors, High Tech Campus 60, 5656 AG Eindhoven, The Netherlands
| | - M. Ivashina
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - D. Caratelli
- The Antenna Company, High Tech Campus 29, 5656 AE Eindhoven, The Netherlands
| | - M. Hasselblad
- Gapwaves, Nellickevagen 22, 412 63 Gothenburg, Sweden
| | - C. Ulusoy
- Karlsruhe Institute of Technology, 6131 Karlsruhe, Germany
| | - A.B. Smolders
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - K. Eriksson
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - M. Johannson
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - R. Maaskant
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - R. Quay
- Fraunhofer Institute for Applied Solid State Physics, IAF, Tullastraße 72, 79108 Freiburg, Germany
| | - D. Floriot
- United Monolithic Semiconductors SAS, Bâtiment Charmille, Mosaic parc de Courtaboeuf, 10 avenue du Québec, 91140, Villebon-sur-Yvette, France
| | - M. Bao
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - L.A. Bronckers
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - J. Fridén
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - M.C. van Beurden
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - B.P. de Hon
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - C. Kolitsidas
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - D. Blanco
- Ericsson AB, Lindholmspiren 11, 417 56 Göteborg, Sweden
| | - F.M.J. Willems
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
| | - T. Eriksson
- Chalmers University of Technology, Chalmersplatsen 4, 412 96 Göteborg, Sweden
| | - A. Filippi
- NXP Semiconductors, High Tech Campus 60, 5656 AG Eindhoven, The Netherlands
| | - F. Ponzini
- Ericsson Telecomunicazioni SpA, Via Anagnina 203, 00118 Rome, Italy
| | - U. Johannsen
- Eindhoven University of Technology, Den Dolech 2, 5612 AZ Eindhoven, The Netherlands
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9
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Dang Y, van Heusden C, Gentzsch M, Steward I, Hickey A, Ni A, Rudolph J, Kreda S. 598: Correction of CF splicing mutations with oligonucleotides. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)02021-x] [Citation(s) in RCA: 1] [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: 11/16/2022]
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10
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Bansal A, Gehre MN, Qin K, Sterrett S, Ali A, Dang Y, Abraham S, Costanzo MC, Venegas LA, Tang J, Manjunath N, Brockman MA, Yang OO, Kan-Mitchell J, Goepfert PA. HLA-E-restricted HIV-1-specific CD8+ T cell responses in natural infection. J Clin Invest 2021; 131:148979. [PMID: 34228645 PMCID: PMC8363272 DOI: 10.1172/jci148979] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 07/01/2021] [Indexed: 01/07/2023] Open
Abstract
CD8+ T cell responses restricted by MHC-E, a nonclassical MHC molecule, have been associated with protection in an SIV/rhesus macaque model. The biological relevance of HLA-E-restricted CD8+ T cell responses in HIV infection, however, remains unknown. In this study, CD8+ T cells responding to HIV-1 Gag peptides presented by HLA-E were analyzed. Using in vitro assays, we observed HLA-E-restricted T cell responses to what we believe to be a newly identified subdominant Gag-KL9 as well as a well-described immunodominant Gag-KF11 epitope in T cell lines derived from chronically HIV-infected patients and also primed from healthy donors. Blocking of the HLA-E/KF11 binding by the B7 signal peptide resulted in decreased CD8+ T cell responses. KF11 presented via HLA-E in HIV-infected cells was recognized by antigen-specific CD8+ T cells. Importantly, bulk CD8+ T cells obtained from HIV-infected individuals recognized infected cells via HLA-E presentation. Ex vivo analyses at the epitope level showed a higher responder frequency of HLA-E-restricted responses to KF11 compared with KL9. Taken together, our findings of HLA-E-restricted HIV-specific immune responses offer intriguing and possibly paradigm-shifting insights into factors that contribute to the immunodominance of CD8+ T cell responses in HIV infection.
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Affiliation(s)
- Anju Bansal
- Department of Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Mika N. Gehre
- Department of Biological Sciences, University of Texas at El Paso, El Paso, Texas, USA
| | - Kai Qin
- Department of Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Sarah Sterrett
- Department of Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - Ayub Ali
- Department of Medicine and AIDS Institute, UCLA, Los Angeles, California, USA
| | - Ying Dang
- Department of Biomedical Sciences, Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, Texas, USA
| | - Sojan Abraham
- Department of Biomedical Sciences, Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, Texas, USA
| | - Margaret C. Costanzo
- Department of Biological Sciences, University of Texas at El Paso, El Paso, Texas, USA
| | - Leon A. Venegas
- Department of Biological Sciences, University of Texas at El Paso, El Paso, Texas, USA
| | - Jianming Tang
- Department of Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
| | - N. Manjunath
- Department of Biomedical Sciences, Texas Tech University Health Sciences Center, Paul L. Foster School of Medicine, El Paso, Texas, USA
| | | | - Otto O. Yang
- Department of Medicine and AIDS Institute, UCLA, Los Angeles, California, USA
| | - June Kan-Mitchell
- Department of Biological Sciences, University of Texas at El Paso, El Paso, Texas, USA
| | - Paul A. Goepfert
- Department of Medicine, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, USA
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11
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Dang Y, Zhang XL, Rao XQ, Kang P, He JJ, Lu NS, Hua M, Xiang WG. [Evaluation of Air Pollution Characteristics and Air Quality Improvement Effect in Beijing and Chengdu]. Huan Jing Ke Xue 2021; 42:3622-3632. [PMID: 34309249 DOI: 10.13227/j.hjkx.202012104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In recent years, China's air quality has been improving, and the concentration of atmospheric particulate matter has decreased significantly. In this study, the pollution characteristics and trends of two typical representative cities (Beijing and Chengdu) were analyzed. The geographical locations, pollution emissions, and meteorological diffusion conditions of the two cities were compared, to evaluate the relative contribution of meteorological conditions and pollution reduction regulations in decreasing fine particulate matter (PM2.5) concentrations. The results showed that the number of heavily polluted days and pollution episodes in Beijing and Chengdu decreased significantly from 2013 to 2018, and the concentration of SO2 and PM2.5 decreased substantially. Compared to 2013, SO2 concentration in Beijing and Chengdu has decreased by 77.8% and 70.9%, whereas PM2.5 concentration has decreased by 42.7% and 48.5%, respectively. The largest reduction appeared in winter, when PM2.5 decreased at an annual rate of 13.5 μg ·m-3 for Beijing and 14.1 μg ·m-3 for Chengdu. During the study period, the wind speed in Chengdu was less than that in Beijing, temperature was approximately 3℃ higher, and static wind in winter was more frequent. A significantly lower mixed-layer height, atmospheric capacity index, and ventilation coefficient in Chengdu resulted in more unfavorable atmospheric diffusion conditions. The static and stable weather index and the environmental meteorological index (EMI) also showed that the atmospheric diffusion conditions were better in Beijing than in Chengdu. The EMI of the two cities showed a decreasing trend during the study period, and the decline in EMI in Chengdu was the most significant in 2018, indicating an evident improvement in meteorological conditions. In 2018, emission reductions are estimated to have contributed 33.5% and 24% to the decrease in PM2.5 in Beijing and Chengdu, respectively, and meteorological conditions contributed 7.2% and 11.1% to the reduction in these two cities. In winter, emission reductions respectively contributed 31.7% and 32.5% to reduction in Beijing and Chengdu, while meteorological conditions made a larger contribution.
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Affiliation(s)
- Ying Dang
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China
| | - Xiao-Ling Zhang
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China
| | - Xiao-Qin Rao
- Environmental Meteorological Center of China Meteorological Administration, Beijing 100081, China
| | - Ping Kang
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China
| | - Jian-Jun He
- Chinese Academy of Meteorological Sciences, Beijing 100081, China
| | - Ning-Sheng Lu
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China
| | - Ming Hua
- Chengdu Meteorological Bureau, Chengdu 610072, China
| | - Wei-Guo Xiang
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China
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Zhao E, Chen S, Dang Y. A novel signature based on pairwise PD-1/PD-L1 signaling pathway genes for predicting the overall survival in patients with hepatocellular carcinoma. Clin Transl Med 2021; 11:e431. [PMID: 34047473 PMCID: PMC8140183 DOI: 10.1002/ctm2.431] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/27/2021] [Accepted: 05/09/2021] [Indexed: 01/18/2023] Open
Affiliation(s)
- Enfa Zhao
- Department of Structural Heart Disease, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shimin Chen
- Department of Gastroenterology, Traditional Chinese Medical Hospital of Taihe Country, Taihe, China
| | - Ying Dang
- Department of Ultrasound Medicine, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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13
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Wang S, Cheng M, Zhou L, Dai Y, Dang Y, Ji X. QSPR modelling for intrinsic viscosity in polymer-solvent combinations based on density functional theory. SAR QSAR Environ Res 2021; 32:379-393. [PMID: 33823697 DOI: 10.1080/1062936x.2021.1902387] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 12/29/2020] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
Linear and nonlinear quantitative structure-property relationship (QSPR) models were developed based on a dataset with 65 polymer-solvent combinations. Seven quantum chemical descriptors, dipole moment, hardness, chemical potential, electrophilicity index, total energy, HOMO and LUMO orbital energies, were calculated with density functional theory at the B3LYP/6-31 G(d) level for polymers and solvents. Considering the strong correlation between intrinsic viscosity and weight, size, shape as well as topological structure of polymers and solvents, topological descriptors were also applied in this work. Meanwhile, the most appropriate polymer structure representation was investigated by considering 1-5 monomeric repeating units. The molecular descriptors were first screened by using the genetic algorithms-multiple linear regression (GA-MLR), with coefficient of determinations (r2) of 0.78 and 0.83 for the training set and the prediction set, respectively. The support vector machine model (SVM) model based on the selected descriptors subset showed a r2 value of 0.95 for the training set and 0.93 for the prediction set. All statistical results suggest that the established QSPR models have good predictability. Furthermore, a new test set obtained from the literature was used for further validation. The r2 values were 0.81 for the MLR model and 0.90 for the SVM model.
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Affiliation(s)
- S Wang
- Department of Chemical Engineering, Sichuan University, Chengdu, PR China
| | - M Cheng
- Department of Chemical Engineering, Sichuan University, Chengdu, PR China
| | - L Zhou
- Department of Chemical Engineering, Sichuan University, Chengdu, PR China
| | - Y Dai
- Department of Chemical Engineering, Sichuan University, Chengdu, PR China
| | - Y Dang
- Department of Chemical Engineering, Sichuan University, Chengdu, PR China
| | - X Ji
- Department of Chemical Engineering, Sichuan University, Chengdu, PR China
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14
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Abstract
Abstract
This paper describes the computational fluid dynamics (CFD) methodology to simulate the boiling flow in a typical Pressurized Water Reactor (PWR) 5 ⨯ 5 rod bundle. The method includes the Eulerian-Eulerian two-fluid model coupled with the improved wall heat partitioning model. The NUPEC PWR Subchannel and Bundle Test (PSBT) International Benchmark are used for validation. The simulated surface averaged void fraction agree well with the experimental data, which indicate the promising application of the present method for modeling the boiling flow in the fuel rod bundle. The main emphasis of current research has been given to the analysis of the phase distribution around and downstream the spacer grid, the effect of the spacer grid structure, including the mixing vanes, the springs and the dimples on the void fraction distribution is investigated. The findings can contribute to a better understanding of three dimensional flow boiling characteristics and can be used to assist in optimizing the spacer grid.
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Affiliation(s)
- B. Ren
- Shanghai Nuclear Engineering Research & Design Institute Co., Ltd . No. 29 Hongcao Road Shanghai 200233 China
| | - Y. Dang
- Shanghai Nuclear Engineering Research & Design Institute Co., Ltd . No. 29 Hongcao Road Shanghai 200233 China
| | - F. J. Gan
- Shanghai Nuclear Engineering Research & Design Institute Co., Ltd . No. 29 Hongcao Road Shanghai 200233 China
| | - P. Yang
- Shanghai Nuclear Engineering Research & Design Institute Co., Ltd . No. 29 Hongcao Road Shanghai 200233 China
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15
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Song Y, Dang Y, Wang J, Cai H, Feng J, Zhang H, Ruan L. Carotid Intraplaque Neovascularization Predicts Ischemic Stroke Recurrence in Patients with Carotid Atherosclerosis. Gerontology 2021; 67:144-151. [PMID: 33582668 DOI: 10.1159/000511360] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 06/07/2020] [Accepted: 09/05/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION This study aimed to examine whether intraplaque neovascularization (IPN) of carotid plaques, as characterized by contrast-enhanced ultrasound (CEUS), is associated with ischemic stroke recurrence in patients with carotid atherosclerosis. METHODS We conducted a prospective study of consecutive patients with a recent stroke and at least one atherosclerotic plaque in the carotid artery on the side consistent with symptoms. All patients underwent CEUS after their first admission. IPN was graded on the basis of the presence and location of microbubbles within each plaque. RESULTS We eventually included 155 patients, all of whom underwent IPN analysis. After a follow-up of 24 months, we recorded 25 (16.1%) stroke recurrences in the whole population. All the recurrences occurred in patients presenting IPN. There was significant difference in the IPN between the 2 groups (p = 0.002). In the final Cox proportional-hazards multivariable models, IPN of grade 2 was independently associated with the risk of stroke recurrence (HR = 4.535; 95% CI: 1.892-10.870; p = 0.001). This association remained after adjusting for the degree of carotid stenosis (HR = 3.491; 95% CI: 1.410-8.646; p = 0.007). CONCLUSIONS IPN was an independent predictor of stroke recurrence in patients with a recent ischemic stroke and carotid atherosclerosis. In predicting stroke recurrence, IPN may be an earlier indicator than carotid stenosis and may help stratify the risk of stroke recurrence.
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Affiliation(s)
- Yan Song
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ying Dang
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jichang Wang
- Department of Vascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Hui Cai
- Department of Vascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jun Feng
- Department of Vascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Hongmei Zhang
- Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Litao Ruan
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China,
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16
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Li ZY, Wang XL, Dang Y, Zhu XZ, Zhang YH, Cai BX, Zheng L. Long non-coding RNA UCA1 promotes the progression of paclitaxel resistance in ovarian cancer by regulating the miR-654-5p/SIK2 axis. Eur Rev Med Pharmacol Sci 2021; 24:591-603. [PMID: 32016960 DOI: 10.26355/eurrev_202001_20035] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Ovarian cancer (OC) is a common tumor in women, and the development of chemoresistance is the major obstacle to its treatment. Long non-coding RNAs (LncRNAs) have been linked to chemoresistance in many cancers. However, the function of lncRNA urothelial carcinoma associated1 (UCA1) in paclitaxel (PTX) resistance of OC is not well elucidated. PATIENTS AND METHODS Quantitative real-time polymerase chain reaction (qRT-PCR) was used to detect the expression of UCA1, microRNA-654-5p (miR-654-5p) and salt inducible kinase 2 (SIK2). Cell PTX resistance and proliferation were evaluated by 3-(4, 5-dimethyl-2 thiazolyl)-2, 5-diphenyl-2-H-tetrazolium bromide (MTT) assay. The abilities of apoptosis, migration and invasion were measured by Flow cytometry and Transwell assays, respectively. Dual-luciferase reporter assay was used to verify the interaction among UCA1, miR-654-5p and SIK2. Besides, Western blot analysis was performed to assess the protein level of SIK2. RESULTS UCA1 was markedly upregulated in OC tissues and PTX-resistant OC cells. Silencing of UCA1 restrained the PTX resistance, reduced the proliferation, migration, invasion and enhanced the apoptosis of PTX-resistant OC cells. MiR-654-5p could be sponged by UCA1, and the inhibitory effect of its overexpression on the progression of PTX-resistant OC cells could be reversed by overexpressed-UCA1. Moreover, SIK2 was a target of miR-654-5p. Silencing of SIK2 could hinder the PTX resistance and suppress the progression of PTX-resistant OC cells, while miR-654-5p inhibitor could invert this inhibitory effect. Also, the expression of SIK2 was regulated by miR-654-5p and UCA1 expression. CONCLUSIONS LncRNA UCA1 plays an active role in PTX resistance of OC and is crucial to maintain the development of PTX resistance in OC, which provides a new therapeutic target for the study of OC chemoresistance.
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Affiliation(s)
- Z-Y Li
- Department of Gynecology, Gansu Provincial Maternity and Child-Care Hospital, Qilihe, Lanzhou, Gansu, China.
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Song Y, Dang Y, Li H, Feng J, Ruan L. Relationship between carotid intraplaque neovascularization and haemoglobin A1c in diabetic patients. Clin Neurol Neurosurg 2021; 203:106515. [PMID: 33601236 DOI: 10.1016/j.clineuro.2021.106515] [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: 06/28/2020] [Revised: 01/19/2021] [Accepted: 01/19/2021] [Indexed: 10/22/2022]
Abstract
INTRODUCTION We aimed to evaluate the characteristics of carotid artery plaques and the relationship between intraplaque neovascularization (IPN) and hemoglobin A1c (HbA1c) in patients of <60 years old with diabetes mellitus (DM) by comparison with diabetes ≥60 years of age. METHODS One-hundred-and-one patients with DM were studied into two groups: those <60 and those ≥60 years of age. All the patients underwent standard carotid ultrasonography and contrast-enhanced ultrasonography, which we used to evaluate IPN. RESULTS Diabetic complications were present in 41 of 50 patients (82 %) in the <60-year-old group, of whom 17 (34 %) had diabetes-related vascular complications. Of the 47 plaques in the <60-year-old group, six (13 %) had IPN Grade 0, 16 (34 %) had IPN Grade 1, and 25 (53 %) had IPN Grade 2. The AUC and RAUC of the plaque in the <60-year-old group were significantly higher than those of the ≥60-year-old group (P = 0.012 and 0.031, respectively). There were also differences in the AUC, RAUC and semi-quantitative grades between patients with and without diabetic macrovasculopathy and diabetic peripheral artery disease (all P < 0.05). The AUC, RAUC and semi-quantitative grading of IPN positively correlated with blood glucose and HbA1c (P < 0.05). CONCLUSION IPN is more common in DM patients who are younger, and have higher blood glucose and HbA1c concentrations, and these plaques are more vulnerable.
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Affiliation(s)
- Yan Song
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Ying Dang
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Hao Li
- Department of Critical Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Jun Feng
- Department of Vascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
| | - Litao Ruan
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
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Zhao E, Chen S, Dang Y. Development and External Validation of a Novel Immune Checkpoint-Related Gene Signature for Prediction of Overall Survival in Hepatocellular Carcinoma. Front Mol Biosci 2021; 7:620765. [PMID: 33553243 PMCID: PMC7859359 DOI: 10.3389/fmolb.2020.620765] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/15/2020] [Indexed: 12/24/2022] Open
Abstract
Objective: The purpose of this study was to develop and validate a novel immune checkpoint-related gene signature for prediction of overall survival (OS) in hepatocellular carcinoma (HCC). Methods: mRNA expression profiles and clinical follow-up information were obtained in the International Cancer Genome Consortium database. An external dataset from The Cancer Genome Atlas (TCGA) Liver Hepatocellular Carcinoma database was used to validate the results. The univariate and multivariate Cox regression analyses were performed based on the differentially expressed genes. We generated a four-mRNA signature to predict patient survival. Furthermore, the reliability and validity were validated in TCGA cohort. An integrated bioinformatics approach was performed to evaluate its diagnostic and prognostic value. Results: A four-gene (epidermal growth factor, mutated in colorectal cancer, mitogen-activated protein kinase kinase 2, and NRAS proto-oncogene, GTPase) signature was built to classify patients into two risk groups using a risk score with different OS in two cohorts (all P < 0.0001). Multivariate regression analysis demonstrated the signature was an independent predictor of HCC. Furthermore, the signature presented an excellent diagnostic power in differentiating HCC and adjacent tissues. Immune cell infiltration analysis revealed that the signature was associated with a number of immune cell subtypes. Conclusion: We identified a four-immune checkpoint-related gene signature as a robust biomarker with great potential for clinical application in risk stratification and OS prediction in HCC patients and could be a potential indicator of immunotherapy in HCC. The diagnostic signature had been validated to accurately distinguish HCC from adjacent tissues.
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Affiliation(s)
- Enfa Zhao
- Department of Structural Heart Disease, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shimin Chen
- Department of Gastroenterology, Traditional Chinese Medicine Hospital of Taihe Country, Taihe, China
| | - Ying Dang
- Department of Ultrasound Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Luo L, Dang Y, Shi Y, Zhao P, Zhang Y, Zhang K. 64 SIN3 transcription regulator family member A regulates porcine early embryonic development by modulating CCNB1 expression. Reprod Fertil Dev 2021. [DOI: 10.1071/rdv33n2ab64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
SIN3 transcription regulator family member A (SIN3A) is the central scaffold protein of the SIN3/HDAC (histone deacetylase) transcriptional repressor complex. We previously found that SIN3A participates in the mouse pre-implantation development by finetuning HDAC1 expression. However, it remains unresolved whether this functional significance of SIN3A is conserved in other mammals. The objective of this work was thus to characterise the expression profiles and the functional role of SIN3A in pre-implantation development using non-rodent animal models. RNA sequencing results show that a large amount of SIN3A mRNA is present in oocytes and early embryos before embryonic genome activation and a low amount thereafter, suggesting a maternal origin of SIN3A in all species examined. Interestingly, immunofluorescence data show that SIN3A protein level peaks at the 4-cell stage in pigs compared with the morula stage in cattle, suggesting a differential role of SIN3A among species. To explore the function of SIN3A in early embryonic development, we used a short interfering (si)RNA-mediated knockdown approach in porcine parthenogenetic activated (PA) embryos. Immunocytochemical analysis showed that SIN3A levels were diminished ∼80% compared with nonspecific siRNA (NC) injected control (n=3). To monitor the developmental potential of embryo depleted of SIN3A, we injected SIN3A-siRNA into MII stage oocytes, followed by parthenogenetic activation, and percent cleavage and blastocyst formation were recorded. We found that SIN3A knockdown (KD) did not affect the cleavage rate (NC vs. KD, 83.63±3.63% vs. 80.08±4.66%, n=5), but significantly reduced blastocyst rate compared with the NC group (NC vs. KD, 36.64±4.28% vs. 6.33±3.12%, n=5). Specifically, SIN3A depletion in early embryos causes developmental arrest at 2-cell stage in pigs but does not affect early embryonic development in bovines. In contrast with mouse data, SIN3A depletion results in only a slight decrease and even no difference in HDAC1 expression in porcine and bovine early embryos, respectively. In addition, HDAC1 knockdown does not cause 2-cell block but leads to a reduced blastocyst rate, suggesting that the effect of SIN3A depletion on porcine early embryos is independent of HDAC1. RNA-Seq analysis was used to compare the global transcript content between NC and KD 2-cell embryos. A total of 23 genes (14 upregulated and 9 downregulated) had undergone significant changes. Interestingly, cyclin B1 (CCNB1) ranked second among downregulated genes. To test whether knockdown of CCNB1 would display a similar phenotype in porcine early embryos, we injected CCNB1-siRNA into pronuclear stage. CCNB1 KD resulted in a similar phenotype as SIN3A depletion. Injection of exogenous CCNB1 mRNA into SIN3A-depleted embryos could partly rescue embryonic development. In conclusion, our results indicate SIN3A plays an essential role in porcine early embryonic development, probably involving the regulation of CCNB1 expression.
This work was funded by National Natural Science Foundation of China, the Anhui Provincial Natural Science Foundation and China Postdoctoral Science Foundation.
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Deng Z, Kang P, Wang Z, Zhang X, Li W, Ou Y, Lei Y, Dang Y, Deng Z. The impact of urbanization and consumption patterns on China's black carbon emissions based on input-output analysis and structural decomposition analysis. Environ Sci Pollut Res Int 2021; 28:2914-2922. [PMID: 32895797 DOI: 10.1007/s11356-020-10650-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 04/26/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
Urbanization in China has dramatically increased from 39.10 in 2002 to 58.52% in 2017. Studies have discussed the impacts of urbanization and its corresponding changes in consumption patterns on carbon dioxide emissions; however, little is known about their impacts on black carbon (BC). Therefore, we collected data on the BC emissions of various sectors to calculate the consumption-based BC emissions in China, and we used an input-output analysis (IOA) and structural decomposition analysis (SDA) to explore the impacts of urbanization and changes in consumption patterns on BC emissions from 2002 to 2017, focusing on sectoral BC emissions. The total BC emissions of various sectors first increased and then decreased. BC emissions increased from 1083.47 in 2002 to 2550.83 Gg in 2012. They were then reduced to 2478.63 Gg in 2017. Additionally, with the rise in the urbanization rate, household consumption BC emissions increased from 446.18 in 2002 to 1080.12 Gg in 2017. Urban consumption, rural consumption, and BC emission intensity were the three main contributing factors to household consumption BC emission changes. Transport, storage, postal, and telecommunications services (TSP); farming, forestry, animal husbandry, and fishery (FFA); and residential and other industries (RES) contributed the most to the urbanization-related BC emission increase. In particular, the TSP sector contributed the most to the BC emission increase because of the increasing TSP needs related to urbanization. Therefore, it is necessary to formulate mitigation policies for the TSP sector.
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Affiliation(s)
- Zhongci Deng
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu, 610225, China
| | - Ping Kang
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu, 610225, China.
| | - Zhen Wang
- College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430072, China
- School of Resource and Environmental Sciences, Wuhan University, Wuhan, 430079, China
| | - Xiaoling Zhang
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu, 610225, China
| | - Weijie Li
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu, 610225, China
| | - Yihan Ou
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu, 610225, China
| | - Yu Lei
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu, 610225, China
| | - Ying Dang
- Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu, 610225, China
| | - Zhongren Deng
- School of Atmospheric Sciences, Nanjing University of Information Science & Technology, Nanjing, 210044, China
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Song Y, Dang Y, Cai H, Wang J, Liu B, Feng J, Ruan L. Carotid intraplaque neovascularization predicts atherosclerotic renal artery stenosis in patients with carotid artery stenosis. Nutr Metab Cardiovasc Dis 2020; 30:1492-1499. [PMID: 32620336 DOI: 10.1016/j.numecd.2020.04.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/28/2020] [Accepted: 04/28/2020] [Indexed: 11/24/2022]
Abstract
BACKGROUND AND AIMS This study aimed to examine whether intraplaque neovascularization (IPN) of carotid plaques, as characterized by contrast-enhanced ultrasound (CEUS), is associated with atherosclerotic renal artery stenosis (ARAS) in patients with normal kidney function. METHODS AND RESULTS We investigated carotid IPN using CEUS in 198 consecutive patients with normal kidney function with and without ARAS. IPN was graded on the basis of the presence and location of microbubbles within each plaque (0, no visible microbubbles in the plaque; 1, moderate microbubbles confined to the shoulder and/or adventitial side of the plaque; and 2, extensive microbubbles throughout the plaque). The grades of each plaque were averaged to obtain an overall score per patient. ARAS was determined angiographically. We found that a higher CEUS-assessed carotid IPN score was associated with ARAS (Odd Ratio, OR: 7.281; 95% Confidence Interval, 95% CI: 3.246-16.336; P < 0.001). Furthermore, an IPN score >1.75 predicted severe stenosis with a sensitivity of 81% and specificity of 58%. Compared with using the IPN score alone, the addition of the homocysteine (HCY) cutoff value (>22.5 mmol/L) resulted in a stronger predictive value (Area Under Curve, AUC: 0.893 vs 0.834; P < 0.001) for severe ARAS. CONCLUSION Carotid plaque neovascularization combined with HCY levels is predictive of severe ARAS in patients with normal kidney function. CEUS-assessed carotid IPN is clinically useful for stratification of ARAS in patients with normal kidney function.
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Affiliation(s)
- Yan Song
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, Xi'an, Shaanxi, 710061, China
| | - Ying Dang
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, Xi'an, Shaanxi, 710061, China
| | - Hui Cai
- Department of Vascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, Xi'an, Shaanxi, 710061, China
| | - Jichang Wang
- Department of Vascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, Xi'an, Shaanxi, 710061, China
| | - Bo Liu
- Department of Ultrasound, Shaanxi Province People's Hospital, 256 West Youyi Road, Xi'an, Shaanxi, 710068, China
| | - Jun Feng
- Department of Vascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, Xi'an, Shaanxi, 710061, China.
| | - Litao Ruan
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, 277 West Yanta Road, Xi'an, Shaanxi, 710061, China.
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Heslop KA, Rovini A, Hunt EG, Fang D, Morris ME, Christie CF, Gooz MB, DeHart DN, Dang Y, Lemasters JJ, Maldonado EN. JNK activation and translocation to mitochondria mediates mitochondrial dysfunction and cell death induced by VDAC opening and sorafenib in hepatocarcinoma cells. Biochem Pharmacol 2020; 171:113728. [PMID: 31759978 PMCID: PMC7309270 DOI: 10.1016/j.bcp.2019.113728] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 11/20/2019] [Indexed: 02/07/2023]
Abstract
The multikinase inhibitor sorafenib, and opening of voltage dependent anion channels (VDAC) by the erastin-like compound X1 promotes oxidative stress and mitochondrial dysfunction in hepatocarcinoma cells. Here, we hypothesized that X1 and sorafenib induce mitochondrial dysfunction by increasing reactive oxygen species (ROS) formation and activating c-Jun N-terminal kinases (JNKs), leading to translocation of activated JNK to mitochondria. Both X1 and sorafenib increased production of ROS and activated JNK. X1 and sorafenib caused a drop in mitochondrial membrane potential (ΔΨ), a readout of mitochondrial metabolism, after 60 min. Mitochondrial depolarization after X1 and sorafenib occurred in parallel with JNK activation, increased superoxide (O2•-) production, decreased basal and oligomycin sensitive respiration, and decreased maximal respiratory capacity. Increased production of O2•- after X1 or sorafenib was abrogated by JNK inhibition and antioxidants. S3QEL 2, a specific inhibitor of site IIIQo, at Complex III, prevented depolarization induced by X1. JNK inhibition by JNK inhibitors VIII and SP600125 also prevented mitochondrial depolarization. After X1, activated JNK translocated to mitochondria as assessed by proximity ligation assays. Tat-Sab KIM1, a peptide selectively preventing the binding of JNK to the outer mitochondrial membrane protein Sab, blocked the depolarization induced by X1 and sorafenib. X1 promoted cell death mostly by necroptosis that was partially prevented by JNK inhibition. These results indicate that JNK activation and translocation to mitochondria is a common mechanism of mitochondrial dysfunction induced by both VDAC opening and sorafenib.
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Affiliation(s)
- K A Heslop
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - A Rovini
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - E G Hunt
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - D Fang
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - M E Morris
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - C F Christie
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - M B Gooz
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - D N DeHart
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States
| | - Y Dang
- Department of Medicine, Medical University of South Carolina, Charleston, SC, United States
| | - J J Lemasters
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States; Department of Biochemistry & Molecular Biology, Medical University of South Carolina, Charleston, SC, United States; Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, United States
| | - E N Maldonado
- Department of Drug Discovery & Biomedical Sciences, Medical University of South Carolina, Charleston, SC, United States; Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, United States.
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Wang P, Qiang H, Song Y, Dang Y, Luan H, Cao L, Cui Q, Tian G. Association between Nonalcoholic Fatty Liver and Gensini Score in Patients with Coronary Heart Disease: A Cross-Sectional Study. Cardiology 2019; 144:90-96. [PMID: 31665722 DOI: 10.1159/000502111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 07/14/2019] [Indexed: 01/11/2023]
Abstract
INTRODUCTION Obesity is one of the important risk factors of coronary heart disease (CHD). Nonalcoholic fatty liver disease (NAFLD) is always accompanied by obesity. Therefore, this study was designed to elucidate the relationship between NAFLD and CHD in obese and nonobese populations. METHODS We conducted a cross-sectional study of 454 Chinese patients diagnosed with CHD. Patients were grouped into non-NAFLD + nonobese, non-NAFLD + obese, NAFLD + nonobese, and NAFLD + obese based on the presence or absence of both NAFLD and obesity. RESULTS The mean Gensini score was significantly higher in patients with fatty liver compared to those without. Logistic regression analysis found that fatty liver, uric acid, and blood glucose levels were risk factors for a high Gensini score. CONCLUSIONS Irrespective of the presence of obesity, NAFLD is a risk factor for CHD, and the clinical effect of nonobese fatty liver (especially in women) should be carefully considered.
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Affiliation(s)
- Ping Wang
- Department of Cardiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Hua Qiang
- Department of Cardiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yan Song
- Department of Ultrasound, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ying Dang
- Department of Ultrasound, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Hui Luan
- Department of Cardiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lifei Cao
- Department of Cardiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Qing Cui
- Department of Cardiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Gang Tian
- Department of Cardiology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China,
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Song Y, Dang Y, Dang LL, Zhao C, Zheng J, Feng J, Ruan LT. Association between intraplaque neovascularization assessed by contrast-enhanced ultrasound and the risk of stroke. Clin Radiol 2019; 75:70-75. [PMID: 31629485 DOI: 10.1016/j.crad.2019.08.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 08/21/2019] [Indexed: 11/16/2022]
Abstract
AIM To determine the cut-off value of the area ratio under the curve (ARUC) for predicting symptoms of stroke. MATERIALS AND METHODS Contrast-enhanced ultrasound was used to analyse intraplaque neovascularization (IPN). The correlations between the ARUC and risk factors of stroke were examined. A receiver operating characteristic curve was used to determine the cut-off value of the ARUC. RESULTS Using a quantitative analysis method for IPN, the ARUC was significantly higher in the symptomatic group than in the asymptomatic group (p=0.017). The ARUC was positively associated with the homocysteine level (r=0.429, p=0.002) and high-sensitivity C-reactive protein level (r=0.424, p=0.003). Regression analysis showed that the ARUC was a risk factor for symptoms of stroke. The receiver operating characteristic curve showed that the cut-off value for symptoms was 0.24; the sensitivity was 77%, and the specificity was 70%; the positive predictive value was 68%, and the negative predictive value was 78%. CONCLUSION IPN was a risk factor for the occurrence of the clinical symptoms of stroke. Patients with an ARUC of >0.24 had a higher risk of stroke.
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Affiliation(s)
- Y Song
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi 710061, China
| | - Y Dang
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi 710061, China
| | - L L Dang
- Department of Vascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi 710061, China
| | - C Zhao
- Department of Vascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi 710061, China
| | - J Zheng
- The Clinical Research Center, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi 710061, China
| | - J Feng
- Department of Vascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi 710061, China.
| | - L T Ruan
- Department of Ultrasound, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi 710061, China.
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Shang J, Ruan LT, Wang YY, Zhang XJ, Dang Y, Liu B, Wang WL, Song Y, Chang SJ. Utilizing size-based thresholds of stiffness gradient to reclassify BI-RADS category 3-4b lesions increases diagnostic performance. Clin Radiol 2019; 74:306-313. [PMID: 30755314 DOI: 10.1016/j.crad.2019.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 01/08/2019] [Indexed: 01/16/2023]
Abstract
AIM To investigate the role of utilizing size-based thresholds of stiffness gradient in diagnosing solid breast lesions and optimizing original Breast Imaging-Reporting And Data System (BI-RADS) classifications. MATERIALS AND METHODS Two-hundred and twenty-seven consecutive women underwent shear-wave elastography (SWE) before ultrasound-guided biopsy, and 234 solid breast lesions categorized as BI-RADS 3-5 were analysed. Receiver operating characteristic curve analysis was performed based on histopathology. Diagnostic performance among SWE, BI-RADS, and their combination were compared. RESULTS The stiffness gradient correlated with the standard deviation of elasticity (SD, r=0.90), and with Tozaki's pattern classification (r=0.64). The area under the receiver operating characteristic curves (AUC) for stiffness gradient (0.939) outperformed SD (0.897) or colour pattern (0.852). Due to significant association with lesion size (r=0.394, p<0.001), stiffness gradient's size-based thresholds (lesions >15 mm: 82.5 kPa; lesions ≤15 mm: 51.1 kPa) were established to reclassify BI-RADS 3-4b lesions. Upgrading category 3 lesions (over the corresponding cut-off value, 3 to 4a) and downgrading categories 4a-4b lesions (less than or equal to the corresponding cut-off value, 4b to 4a, 4a to 3), yielded significant improvement in specificity (90.28% versus 77.78%, p<0.001) and AUC (0.948 versus 0.926, p=0.035) than BI-RADS alone. No significant loss emerged in the sensitivity (88.89% versus 91.11%, p=0.500). CONCLUSION Stiffness gradient exhibited better discriminatory ability than SD or four-colour pattern classification in determining solid breast lesions and applying its size-specific thresholds to categorize BI-RADS 3-4b lesions could improve diagnostic performance.
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Affiliation(s)
- J Shang
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - L-T Ruan
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China.
| | - Y-Y Wang
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - X-J Zhang
- Department of Pathology, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Y Dang
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - B Liu
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China; Department of Ultrasound Diagnosis, Shaanxi Province People's Hospital, Xi'an 710068, China
| | - W-L Wang
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China; Department of Ultrasound Diagnosis, Xi'an NO.3 Hospital, Xi'an 710018, China
| | - Y Song
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - S-J Chang
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
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Dang Y, Lin Y, Sun H, Sun J, Li C, Li Z. [Isoliquiritigenin can inhibit migration and invasion of human glioma stem cells by down-regulating matrix metalloproteinases]. Zhejiang Da Xue Xue Bao Yi Xue Ban 2018; 47:181-186. [PMID: 30226314 PMCID: PMC10393708 DOI: 10.3785/j.issn.1008-9292.2018.04.12] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the effects of isoliquiritigenin on the migration and invasion of human glioma stem cells and the underlying mechanism. METHODS The stem cell markers CD133 and Nestin in SHG44 human glioma stem cells were examined with immunofluorescence microscopy. The migration and invasion ability of glioma stem cells was determined by transwell method. The mRNA and protein expression of matrix metalloproteinase (MMP)-2 and MMP-9 were detected by real-time RT-PCR and Western blot, respectively. RESULTS CD133 and Nestin were positive in SHG44 cells. The number of migrated cells in SHG44 cells treated with 20 and 80 μmol/L isoliquiritigenin for 48 h were significantly lower than that in control group (76±5 and 42±4 vs. 85±6, all P<0.01), and the number of migrated cells in 80 μmol/L isoliquiritigenin group was lower than that in 20 μmol/L isoliquiritigenin group (P<0.01). The numbers of cells crossing through membrane in 20 and 80 μmol/L isoliquiritigenin groups were 190±13 and 130±9, respectively, which were significantly lower than that in control group (230±14, all P<0.01), and the number of crossed cells in the 80 μmol/L isoliquiritigenin group was lower than that in 20 μmol/L isoliquiritigenin group (P<0.01). The mRNA and protein expression levels of MMP-2 and MMP-9 were decreased compared with control group (P<0.05 or P<0.01), and the expression levels in 80 μmol/L isoliquiritigenin group were lower than those in 20 μmol/L isoliquiritigenin group (P<0.05 or P<0.01). CONCLUSIONS Isoliquiritigenin exhibits antitumor effects on glioma stem cells by inhibiting cell migration and invasion, which may be related to the down-regulation of MMP-2 and MMP-9.
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Affiliation(s)
- Ying Dang
- Department of Neurosurgery, PLA Lanzhou General Hospital, Lanzhou 730050, China
- Department of Functional Neurosurgery, Xi'an Honghui Hospital, Xi'an 710054, China
| | - Yuliang Lin
- Department of Neurosurgery, PLA Lanzhou General Hospital, Lanzhou 730050, China
| | - Hongjun Sun
- Department of Neurosurgery, Second Gansu Provincial People's Hospital, Lanzhou 730030, China
| | - Jianjun Sun
- Department of Neurosurgery, PLA Lanzhou General Hospital, Lanzhou 730050, China
| | - Changdong Li
- Department of Neurosurgery, PLA Lanzhou General Hospital, Lanzhou 730050, China
| | - Zhiyun Li
- Department of Neurosurgery, PLA Lanzhou General Hospital, Lanzhou 730050, China
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Dang Y, Zou G, Ling L. 6.3-O2Health status and predictors among workers in small and medium-sized enterprises in Guangdong, China: a cross-sectional mixed study. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky047.209] [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: 11/14/2022] Open
Affiliation(s)
- Y Dang
- School of Public Health, Sun Yat-sen University, China
- Sun Yat-sen Centre for Migrant Health Policy (CMHP), China
| | - G Zou
- Institute for International Health and Development, Queen Margaret University, United Kingdom
| | - L Ling
- School of Public Health, Sun Yat-sen University, China
- Sun Yat-sen Centre for Migrant Health Policy (CMHP), China
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Dang Y, Zou G, Ling L. 7.5-O8Migration pattern and health service seeking behaviour among workers in small and medium-sized enterprises in Guangdong, China: a cross-sectional survey. Eur J Public Health 2018. [DOI: 10.1093/eurpub/cky047.269] [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: 11/14/2022] Open
Affiliation(s)
- Y Dang
- School of Public Health, Sun Yat-sen University, China
- Sun Yat-sen Center for Migrant Health Policy, Sun Yat-sen University, China
| | - G Zou
- Institute for International Health and Development, Queen Margaret University, United Kingdom
| | - L Ling
- School of Public Health, Sun Yat-sen University, China
- Sun Yat-sen Center for Migrant Health Policy, Sun Yat-sen University, China
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Shang J, Wang W, Feng J, Luo GG, Dang Y, Sun J, Yang YQ, Ruan LT. Carotid Plaque Stiffness Measured with Supersonic Shear Imaging and Its Correlation with Serum Homocysteine Level in Ischemic Stroke Patients. Korean J Radiol 2018; 19:15-22. [PMID: 29353995 PMCID: PMC5768496 DOI: 10.3348/kjr.2018.19.1.15] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 05/27/2016] [Accepted: 12/24/2016] [Indexed: 11/15/2022] Open
Abstract
Objective To ascertain the feasibility of using shear wave velocity (SWV) in assessing the stiffness of carotid plaque by supersonic shear imaging (SSI) and explore preliminary clinical value for such evaluation. Materials and Methods Supersonic shear imaging was performed in 142 patients with ischemic stroke, including 76 males and 66 females with mean age of 66 years (range, 45-80 years). The maximum, minimum, and mean values of SWV were measured for 129 carotid plaques. SWVs were compared between echolucent and echogenic plaques. Correlations between SWVs and serum homocysteine levels were investigated. Based on neurological symptom, the surrogate marker of vulnerable plaque (VP), binary logistic regression was performed and area under curve (AUC) of homocysteine only and homocysteine combing SWVmean was calculated respectively. Results Echogenic plaques (n = 51) had higher SWVs than echolucent ones (n = 78) (SWVmin 3.91 [3.24-4.17] m/s vs. 1.51 [1.04-1.94] m/s; SWVmean, 4.29 [3.98-4.57] m/s vs. 2.09 [1.69-2.41] m/s; SWVmax, 4.67 [4.33-4.86] m/s vs. 2.62 [2.32-3.31] m/s all p values < 0.01). Pearson correlation analysis showed that stiffness of plaques was negatively correlated with homocysteine level. R values for SWVmin, SWVmean, and SWVmax were -0.205, -0.213, and -0.199, respectively. Binary logistic regression analysis showed that sex (p = 0.008), low-density lipoprotein (p = 0.015), triglycerides (p = 0.011), SWVmean (p = 0.004), and hyper-homocysteinemia (p = 0.010) were significantly associated with symptomatic ischemic stroke. Receiver operating characteristic curves revealed that SWVmean combing serum homocysteine level (AUC = 0.67) presented better diagnostic value than serum homocysteine only (AUC = 0.60) for symptomatic ischemic stroke. Conclusion Supersonic shear imaging could be used to quantitatively evaluate stiffness of both echolucent and echogenic carotid plaques. More importantly, SWVs of plaques were not only correlated to serum homocysteine level, but also associated with symptomatic ischemic stroke, suggesting that SSI might be useful for understanding more about VP.
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Affiliation(s)
- Jing Shang
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Wen Wang
- Department of Radiology, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China
| | - Jun Feng
- Department of Neurology, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Guo-Gang Luo
- Department of Neurology, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Ying Dang
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Jian Sun
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Yan-Qiu Yang
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
| | - Li-Tao Ruan
- Department of Ultrasound Medicine, The First Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710061, China
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Lin Y, Sun H, Dang Y, Li Z. Isoliquiritigenin inhibits the proliferation and induces the differentiation of human glioma stem cells. Oncol Rep 2017; 39:687-694. [PMID: 29251326 DOI: 10.3892/or.2017.6154] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 11/16/2017] [Indexed: 11/06/2022] Open
Abstract
Glioma stem cells (GSCs) have been proven to be resistant to various therapeutic strategies, such as temozolomide chemotherapy and radiotherapy, leading to glioma recurrence. Isoliquiritigenin (ISL), a menber of the flavonoids isolated from liquorice has been found to be a potent stimulator of cell differentiation and has potential application for treating various types of cancer including human brain glioma. However, the antitumor activity of ISL on GSCs and the signaling pathway underlying its therapeutic effects are poorly understood. In the present study, GSCs were isolated from SHG44 human glioma cells by serum-free culture and treated with ISL or DAPT (a Notch/γ-secretase inhibitor). It was found that ISL dose-dependently inhibited GSC growth after 72 h of treatment and decreased the formation of tumor spheres. Meanwhile, GSCs differentiated into astrocytes and neurons. Furthermore, these therapeutic effects were accompanied by downregulation of Notch1 and Hes1 at the protein and mRNA levels. Taken together, our results demonstrated that ISL exhibits antitumor effects on GSCs by inhibiting proliferation and inducing differentiation. The therapeutic effect may be related to downregulation of the Notch1 signaling pathway. Application of ISL presents potential benefits for the treatment of human brain glioma.
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Affiliation(s)
- Yuliang Lin
- Department of Neurosurgery, Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou, Gansu 730050, P.R. China
| | - Hongjun Sun
- Department of Neurosurgery, Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou, Gansu 730050, P.R. China
| | - Ying Dang
- Department of Neurosurgery, Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou, Gansu 730050, P.R. China
| | - Zhiyun Li
- Department of Neurosurgery, Lanzhou General Hospital, Lanzhou Command of CPLA, Lanzhou, Gansu 730050, P.R. China
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Shang J, Wang YY, Dang Y, Zhang XJ, Song Y, Ruan LT. An inflammatory myofibroblastic tumor in the transplanted liver displaying quick wash-in and wash-out on contrast-enhanced ultrasound: A case report. Medicine (Baltimore) 2017; 96:e9024. [PMID: 29245287 PMCID: PMC5728902 DOI: 10.1097/md.0000000000009024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
RATIONALE Inflammatory myofibroblastic tumor (IMT) is an uncommon mesenchymal neoplasm, and its presence in a grafted liver is exceedingly rare. PATIENT CONCERNS A 54-year-old woman was admitted to our hospital with a half-month history of intermittent melena. She had undergone deceased-donor liver transplantation (LT) for hepatitis B virus related liver cirrhosis without hepatocellular carcinoma 5 months previously. DIAGNOSIS Laboratory examination showed impaired liver and renal functions and Epstein-Barr virus (EBV) infection, but tumor markers within normal ranges. Gastroscopy showed esophageal varices. Ultrasound and computed tomography angiography revealed an ill-defined and irregular solitary lesion in the porta hepatis, encasing both the portal vein and the hepatic artery. The lesion was characterized by arterial hyper-enhancement and hypo-enhancement in the remaining phases with contrast-enhanced ultrasound (CEUS). The lesion was finally confirmed as an IMT by ultrasound-guided biopsy. INTERVENTION The patient received conservative treatment, including immunosuppression, endoscopic variceal ligation, antibiotics, steroids, and antiviral agents. OUTCOME The patient's gastrointestinal bleeding was controlled, but the symptoms associated with portal hypertension worsened. Attempts to perform a transjugular intrahepatic portosystemic shunt were unsuccessful, and she unfortunately died soon after. LESSONS A differential diagnosis of IMT should be considered in LT recipients presenting with EBV infection, normal tumor markers, and a de novo hepatic lesion with quick wash-in and wash-out on CEUS. Ultrasound is associated with the advantages of convenience and nonionizing radiation, and should thus be the priority approach for monitoring transplanted liver.
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Affiliation(s)
| | | | | | - Xin-juan Zhang
- Department of Pathological Diagnosis, the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Yan Song
- Department of Ultrasound Medicine
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Song Y, Feng J, Dang Y, Zhao C, Zheng J, Ruan L. Relationship between Plaque Echo, Thickness and Neovascularization Assessed by Quantitative and Semi-quantitative Contrast-Enhanced Ultrasonography in Different Stenosis Groups. Ultrasound Med Biol 2017; 43:2947-2953. [PMID: 28965720 DOI: 10.1016/j.ultrasmedbio.2017.08.1882] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 04/20/2017] [Revised: 08/22/2017] [Accepted: 08/24/2017] [Indexed: 06/07/2023]
Abstract
The aim of this study was to determine the relationship between plaque echo, thickness and neovascularization in different stenosis groups using quantitative and semi-quantitative contrast-enhanced ultrasound (CEUS) in patients with carotid atherosclerosis plaque. A total of 224 plaques were divided into mild stenosis (<50%; 135 plaques, 60.27%), moderate stenosis (50%-69%; 39 plaques, 17.41%) and severe stenosis (70%-99%; 50 plaques, 22.32%) groups. Quantitative and semi-quantitative methods were used to assess plaque neovascularization and determine the relationship between plaque echo, thickness and neovascularization. Correlation analysis revealed no relationship of neovascularization with plaque echo in the groups using either quantitative or semi-quantitative methods. Furthermore, there was no correlation of neovascularization with plaque thickness using the semi-quantitative method. The ratio of areas under the curve (RAUC) was negatively correlated with plaque thickness (r = -0.317, p = 0.001) in the mild stenosis group. With the quartile method, plaque thickness of the mild stenosis group was divided into four groups, with significant differences between the 1.5-2.2 mm and ≥3.5 mm groups (p = 0.002), 2.3-2.8 mm and ≥3.5 mm groups (p <0.001) and 2.9-3.4 mm and ≥3.5 mm groups (p <0.001). Both semi-quantitative and quantitative CEUS methods characterizing neovascularization of plaque are equivalent with respect to assessing relationships between neovascularization, echogenicity and thickness. However, the quantitative method could fail for plaque <3.5 mm because of motion artifacts.
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Affiliation(s)
- Yan Song
- Department of Ultrasound, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Jun Feng
- Department of Vascular Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Ying Dang
- Department of Ultrasound, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Chao Zhao
- Department of Vascular Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Jie Zheng
- Clinical Research Center (CRC), First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Litao Ruan
- Department of Ultrasound, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
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Dang Y, Li X, Liu S, Wei L, Shi M. A Retrospective Study of 344 Patients With FIGO Stage IIB Cervical Carcinoma After Neoadjuvant Chemoradiation Therapy in Cervical Cancer: Pelvic Lymph Node Dissection Should Be Tailored. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1408] [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: 11/17/2022]
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Yi L, Dang Y, Wu J, Zhang L, Liu X, Liu B, Zhou Y, Lu X. Purification and characterization of a novel bacteriocin produced by Lactobacillus crustorum MN047 isolated from koumiss from Xinjiang, China. J Dairy Sci 2016; 99:7002-7015. [DOI: 10.3168/jds.2016-11166] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Accepted: 06/07/2016] [Indexed: 11/19/2022]
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Shang J, Ruan LT, Dang Y, Wang YY, Song Y, Lian J. Contrast-enhanced ultrasound improves accurate identification of appendiceal mucinous adenocarcinoma in an old patient: A case report. Medicine (Baltimore) 2016; 95:e4637. [PMID: 27583883 PMCID: PMC5008567 DOI: 10.1097/md.0000000000004637] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Adenocarcinoma of appendiceal origin is far rarer than other colorectal carcinomas and its preoperative diagnosis is challenging. To our knowledge, utility of contrast-enhanced ultrasound (CEUS) to diagnose it is much less. METHOD A 61-year-old man presented with abdominal pain in the right lower quadrant for 20 days. In order to fulfill an accurately preoperative diagnosis, he received laboratory and imaging tests such as carcinoembryonic antigen (CEA), computer tomography (CT), CEUS and endoscope. DIAGNOSIS AND INTERVENTION He was initially suspected of suffering appendicitis, while his white blood cell count was normal and carcinoembryonic antigen (CEA) in serum was remarkably increased. Both routine ultrasound and computer tomography (CT) examinations supported suppurative appendicitis. The overall data, however, failed to excluded neoplastic pathology thoroughly. Therefore, CEUS was carried out and showed an inhomogeneous enhancement intra the lesion located in the body of the appendix, which made our consideration of neoplasm. The result of the follow-up biopsy guided by endoscope was consistent with appendiceal tumor. The patient received laparoscopic right hemicolectomy. Histopathology confirmed as well differentiated mucinous adenocarcinoma of appendix origin. His postoperative course was uneventful, and he had a regular diet again without any complaint. RESULT Serum CEA was remarkably increased (12.00 ng/mL). Both routine ultrasound and CT examinations supported suppurative appendicitis. However, CEUS examination showed an inhomogeneous enhancement intra the lesion located in the body of the appendix, which made our consideration of neoplasm. The follow-up biopsy guided by endoscope and surgical specimens confirmed as well differentiated mucinous adenocarcinoma of appendix origin. CONCLUSION Most mucinous adenocarcinoma mimicking appendicitis results in difficult diagnosis preoperatively. Clinician and radiologist should be aware of it when old patient presented with appendicitis especially along with high level of CEA.
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Affiliation(s)
| | - Li-tao Ruan
- Department of Ultrasound Medicine
- Correspondence: Li-tao Ruan, The Department of Ultrasound Medicine, The First Affiliated Hospital, Xi’an Jiaotong University, No 277, Yanta West Road, Xi’an, Shaanxi Province 710061, China (e-mail: )
| | | | | | - Yan Song
- Department of Ultrasound Medicine
| | - Jie Lian
- Department of Pathological Diagnosis, The First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, China
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Zheng Y, Hu G, Liu Y, Ma Y, Dang Y, Li F, Xing H, Wang T, Huo L. The role of 18F-FDG PET/CT in the management of patients with secondary haemophagocytic lymphohistiocytosis. Clin Radiol 2016; 71:1248-1254. [PMID: 27387105 DOI: 10.1016/j.crad.2016.05.011] [Citation(s) in RCA: 19] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 05/13/2016] [Accepted: 05/19/2016] [Indexed: 01/12/2023]
Abstract
AIM To investigate the ability of combined 2-[18F]-fluoro-2-deoxy-d-glucose (18F-FDG) positron-emission tomography (PET)/computed tomography (CT) to determine potential causes of secondary haemophagocytic lymphohistiocytosis (sHLH) and to predict prognosis. MATERIAL AND METHODS Forty-three patients (male/female 20/23, median age 48.5 years), who were diagnosed with sHLH and underwent FDG-PET/CT before treatment, were retrospectively reviewed. The clinical characteristics were compared to identify the predictors of high-yield FDG-PET/CT. Univariate and multivariate analyses were conducted to identify factors associated with survival. Statistical analysis was performed using SPSS version 19.0. RESULTS PET results were helpful in 65.1% (28/43), whilst non-contributory in 34.9% (15/43) of patients with regard to the final diagnosis. Lymphoma was the most common (25/43) reason for sHLH, and patients with focal FDG uptake were more likely to be diagnosed with underlying diseases. C-reactive protein (CRP) was found to be a good indicator for the usefulness of PET/CT in HLH patients. Multivariate analysis showed that therapy regimen (hazard ratio [HR]=4.99, p=0.026), fibrinogen (FBG) <1.5 g/l (HR=3.87, p=0.049) and spleen:mediastinum ratio (SP/M) (HR=7.44, p=0.006) were independent prognostic factors for survival. CONCLUSION FDG-PET/CT could be a useful technique for detecting underlying diseases causing sHLH. CRP was a useful predictor of FDG-PET/CT effectiveness. Therapy regimen, FBG level, and SP/M were independent prognostic factors for HLH survival.
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Affiliation(s)
- Y Zheng
- Department of Nuclear Medicine, China-Japan Friendship Hospital, Beijing, PR China
| | - G Hu
- Department of Nuclear Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, PR China
| | - Y Liu
- Department of Nuclear Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, PR China
| | - Y Ma
- Department of Nuclear Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, PR China
| | - Y Dang
- Department of Nuclear Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, PR China
| | - F Li
- Department of Nuclear Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, PR China
| | - H Xing
- Department of Nuclear Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, PR China
| | - T Wang
- Department of Nuclear Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, PR China
| | - L Huo
- Department of Nuclear Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing, PR China.
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Choi JG, Dang Y, Abraham S, Ma H, Zhang J, Guo H, Cai Y, Mikkelsen JG, Wu H, Shankar P, Manjunath N. Lentivirus pre-packed with Cas9 protein for safer gene editing. Gene Ther 2016; 23:627-33. [PMID: 27052803 DOI: 10.1038/gt.2016.27] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [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: 09/17/2015] [Revised: 02/02/2016] [Accepted: 02/29/2016] [Indexed: 12/22/2022]
Abstract
The CRISPR/Cas9 system provides an easy way to edit specific site/s in the genome and thus offers tremendous opportunity for human gene therapy for a wide range of diseases. However, one major concern is off-target effects, particularly with long-term expression of Cas9 nuclease when traditional expression methods such as via plasmid/viral vectors are used. To overcome this limitation, we pre-packaged Cas9 protein (Cas9P LV) in lentiviral particles for transient exposure and showed its effectiveness for gene disruption in cells, including primary T cells expressing specific single guide RNAs (sgRNAs). We then constructed an 'all in one virus' to express sgRNAs in association with pre-packaged Cas9 protein (sgRNA/Cas9P LV). We successfully edited CCR5 in TZM-bl cells by this approach. Using an sgRNA-targeting HIV long terminal repeat, we also were able to disrupt HIV provirus in the J-LAT model of viral latency. Moreover, we also found that pre-packaging Cas9 protein in LV particle reduced off-target editing of chromosome 4:-29134166 locus by CCR5 sgRNA, compared with continued expression from the vector. These results show that sgRNA/Cas9P LV can be used as a safer approach for human gene therapy applications.
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Affiliation(s)
- J G Choi
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - Y Dang
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - S Abraham
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - H Ma
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - J Zhang
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - H Guo
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - Y Cai
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - J G Mikkelsen
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - H Wu
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - P Shankar
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - N Manjunath
- Department of Biomedical Sciences, Center of Emphasis in Infectious Disease, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
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Dang Y, Jia G, Choi J, Ma H, Anaya E, Ye C, Shankar P, Wu H. Optimizing sgRNA structure to improve CRISPR-Cas9 knockout efficiency. Genome Biol 2015; 16:280. [PMID: 26671237 PMCID: PMC4699467 DOI: 10.1186/s13059-015-0846-3] [Citation(s) in RCA: 231] [Impact Index Per Article: 25.7] [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: 10/09/2015] [Accepted: 11/25/2015] [Indexed: 11/10/2022] Open
Abstract
Background Single-guide RNA (sgRNA) is one of the two key components of the clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9 genome-editing system. The current commonly used sgRNA structure has a shortened duplex compared with the native bacterial CRISPR RNA (crRNA)–transactivating crRNA (tracrRNA) duplex and contains a continuous sequence of thymines, which is the pause signal for RNA polymerase III and thus could potentially reduce transcription efficiency. Results Here, we systematically investigate the effect of these two elements on knockout efficiency and showed that modifying the sgRNA structure by extending the duplex length and mutating the fourth thymine of the continuous sequence of thymines to cytosine or guanine significantly, and sometimes dramatically, improves knockout efficiency in cells. In addition, the optimized sgRNA structure also significantly increases the efficiency of more challenging genome-editing procedures, such as gene deletion, which is important for inducing a loss of function in non-coding genes. Conclusions By a systematic investigation of sgRNA structure we find that extending the duplex by approximately 5 bp combined with mutating the continuous sequence of thymines at position 4 to cytosine or guanine significantly increases gene knockout efficiency in CRISPR-Cas9-based genome editing experiments. Electronic supplementary material The online version of this article (doi:10.1186/s13059-015-0846-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ying Dang
- Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA.
| | - Gengxiang Jia
- Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA.
| | - Jennie Choi
- Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA.
| | - Hongming Ma
- Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA.
| | - Edgar Anaya
- Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA.
| | - Chunting Ye
- Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA.
| | - Premlata Shankar
- Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA.
| | - Haoquan Wu
- Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso, El Paso, TX, 79905, USA.
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Chang X, Feng J, Ruan L, Shang J, Yang Y, Sun J, Dang Y, Song Y. Positive correlation between neovascularization degree of carotid atherosclerosis determined by contrast-enhanced ultrasound and level of serum C-reactive protein. VASA 2015; 44:187-94. [PMID: 26098322 DOI: 10.1024/0301-1526/a000429] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Background: Neovascularization is one of the most important risk factors for unstable plaque. This study was designed to correlate plaque thickness, artery stenosis and levels of serum C-reactive protein with the degree of intraplaque enhancement determined by contrast-enhanced ultrasound. Patients and methods: Contrast-enhanced ultrasound was performed on 72 carotid atherosclerotic plaques in 48 patients. Contrast enhancement within the plaque was categorized as grade 1, 2 or 3. Maximum plaque thickness was measured in short-axis view. Carotid artery stenosis was categorized as mild, moderate or severe. Results: Plaque contrast enhancement was not associated with the degree of artery stenosis or with plaque thickness. Serum C-reactive protein levels were positively correlated with the number of new vessels in the plaque. C-reactive protein levels increased in the three groups(Grade 1: 3.72±1.79mg/L; Grade 2: 7.88±4.24 mg/L; Grade 3: 11.02±3.52 mg/L), with significant differences among them (F=10.14, P<0.01), and significant differences between each two groups (P<0.05). Spearmans rank correlation analysis showed that serum C-reactive protein levels were positively correlated with the degree of carotid plaque enhancement (Rs =0.69, P<0.01). Conclusions: The combination of C-reactive protein levels and intraplaque neovascularization detected by contrast-enhanced ultrasound may allow more accurate evaluation of plaque stability.
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Affiliation(s)
- Xiaoni Chang
- Department of Ultrasound, the First Affiliated Hospital, Xian Jiaotong University, China, and Department of Ultrasound, Shaanxi Provincial Peoples Hospital, China
| | - Jun Feng
- Department of Neurology, the First Affiliated Hospital, Xian Jiaotong University, China
| | - Litao Ruan
- Department of Ultrasound, the First Affiliated Hospital, Xian Jiaotong University, China
| | - Jing Shang
- Department of Ultrasound, the First Affiliated Hospital, Xian Jiaotong University, China
| | - Yanqiu Yang
- Department of Ultrasound, the First Affiliated Hospital, Xian Jiaotong University, China
| | - Jian Sun
- Department of Ultrasound, the First Affiliated Hospital, Xian Jiaotong University, China
| | - Ying Dang
- Department of Ultrasound, the First Affiliated Hospital, Xian Jiaotong University, China
| | - Yan Song
- Department of Ultrasound, the First Affiliated Hospital, Xian Jiaotong University, China
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Huang W, Wang TB, Zhang P, Dang Y, Chen JH, Xue F, Zhang PX, Yang M, Xu HL, Fu ZG, Jiang BG. [Characteristics and perioperative management of hemophilia patients with fractures]. Beijing Da Xue Xue Bao Yi Xue Ban 2015; 47:281-284. [PMID: 25882945] [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: 06/04/2023]
Abstract
OBJECTIVE To investigate the characteristics and perioperative management of hemophilia patients with fracture. METHODS Retrospectively, we analyzed 8 patients with hemophilia combined with fracture, who were admittted to our department from 2005 to 2013. Six patients were with hemophilia A and two with hemophilia B; Based on the severity of hemophilia, 2 cases were light, 3 moderate and 3 severe; Based on the location of fracture, 4 cases were femoral neck fractures, 1 femoral intertrochanteric fracture, 1 bilateral distal femur fractures, 1 tibiofibula fracture, and 1 humerus intercondylar fracture. Blood coagulation factor replacement therapy was conducted preoperatively, intraoperatively and postoperatively, All the patients underwent closed or open reduction and internal fixation or joint replacement. Also, we analyzed the perioperative complications and observed whether the fracture healed. RESULTS The average age was 33.5 years (14 to 47 years); In 6 cases, fractures occurred at femur, accounting for 75% of all the fractures; Femoral neck fracture was treated by closed reduction and hollow screws fixation; Femoral intertrochanteric fracture, distal femur fracture, and tibiofibula fracture were treated by open reduction and internal fixation with plate; Humerus intercondylar fracture was treated by elbow joint replacement. Intraoperative bleeding was from 50 to 600 mL, an average of 262 mL; Perioperatively, the average use of FVIII/activated prothrombin complex concentrates (APCC) was 358 U/kg (125 to 554 U/kg). Postoperatively, poor wound healing was observed in 2 patients, and the condition improved after symptomatic treatment; In patients with internal fixation, all the fractures united, and the average healing time was 14 weeks. No complications such as fixation loosening or rupture occurred after internal fixation. CONCLUSION Hemophilia combined with fracture mainly occurred in the young, and the site of fracture was given priority to femur. With perfect preoperative preparation, on the basis of the replacement therapy, hemophilia combined with fractures was safe for surgical treatment, and postoperative fractures healing wasgood. But the risk of poor wound healing was high.
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Affiliation(s)
- W Huang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - T B Wang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - P Zhang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - Y Dang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - J H Chen
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - F Xue
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - P X Zhang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - M Yang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - H L Xu
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - Z G Fu
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
| | - B G Jiang
- Department of Trauma Orthopeadics, Peking University Peoples Hospital;Peking University Traffic Medicine Center, Beijing 100044, China
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Pan L, Ren F, Rong M, Dang Y, Luo Y, Luo D, Chen G. Correlation between down-expression of miR-431 and clinicopathological significance in HCC tissues. Clin Transl Oncol 2015; 17:557-63. [PMID: 25775917 DOI: 10.1007/s12094-015-1278-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [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: 11/06/2014] [Accepted: 01/22/2015] [Indexed: 01/25/2023]
Abstract
BACKGROUND AND AIMS Researches have shown that miRNAs have been proposed as novel diagnostic biomarkers for classification and prognostic stratification of HCC. However, whether or not miR-431 contributes to the progression of HCC remains unknown. Therefore, we aimed to investigate the clinicopathological significance of miR-431 in HCC. METHODS MiR-431 expression in 95 HCC cases and corresponding adjacent non-cancerous tissues was evaluated by quantitative reverse transcription polymerase chain reaction (qRT-PCR). Furthermore, statistical analysis was performed to identify the correlations between expression of miR-431 and a variety of clinicopathological parameters and patient recurrence. The area under the receiver operating characteristic curve (AUC) was used to evaluate the accuracy of miR-431 as a biomarker for HCC diagnosis and prediction of disease deterioration. RESULTS MiR-431 was markedly down-regulated in the HCC samples (1.1885 ± 0.75867) compared with corresponding adjacent tumor tissues (1.7957 ± 0.89333, P < 0.001). The AUC of low miR-431 expression to diagnose HCC was 0.668 (95 % CI 0.592-0.744, P < 0.001). MiR-431 down-expression was correlated with multiple malignant characteristics, including lymph node metastasis (r = -0.455, P < 0.001), clinical TNM stage (r = -0.223, P = 0.030), MTDH (r = -0.292, P = 0.006), vaso-invasion (r = -0.204, P = 0.047), MVD (r = -0.281, P = 0.006) and HCV (r = 0.215, P = 0.037). Additionally, the recurrent time of lower miR-431 expression group was 56.602 ± 3.914 months, much longer than that in the high expression group (50.009 ± 2.731 months), however, no significant difference was noted (χ (2) = 0.005, P = 0.943). CONCLUSIONS The down-expression of miR-431 is partially responsible for a series of clinicopathological features which may be tightly correlated with the progression of HCC. Thus, expression of miR-431 may be proposed as a new factor in association with the progression of HCC.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Carcinoma, Hepatocellular/complications
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/pathology
- Cohort Studies
- Down-Regulation
- Female
- Gene Expression Regulation, Neoplastic
- Hepatitis C, Chronic/complications
- Hepatitis C, Chronic/genetics
- Humans
- Liver Neoplasms/complications
- Liver Neoplasms/genetics
- Liver Neoplasms/pathology
- Lymph Nodes/pathology
- Lymphatic Metastasis
- Male
- MicroRNAs/genetics
- Middle Aged
- Neoplasm Staging
- Neoplasms, Multiple Primary/complications
- Neoplasms, Multiple Primary/genetics
- Neoplasms, Multiple Primary/pathology
- Prospective Studies
- Reverse Transcriptase Polymerase Chain Reaction
- Tumor Burden
- alpha-Fetoproteins/metabolism
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Affiliation(s)
- L Pan
- Department of Radiotherapy, First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China
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Chang X, Feng J, Ruan L, Shang J, Yang Y, Sun J, Dang Y, Song Y. Abstract W P396: Positive Correlation Between Neovascularization Degree of Carotid Atherosclerosis Determined by Contrast-enhanced Ultrasound and Level of Serum C-reactive Protein. Stroke 2015. [DOI: 10.1161/str.46.suppl_1.wp396] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective:
To correlate plaque thickness, artery stenosis and levels of serum C-reactive protein (CRP) with the degree of intraplaque enhancement determined by contrast-enhanced ultrasound (CEUS).
Methods:
CEUS was performed on 72 carotid atherosclerotic plaques in 48 patients. Contrast enhancement within the plaque was categorized as grade 1, 2 or 3. Maximum plaque thickness was measured in short-axis view. Carotid artery stenosis was categorized as mild, moderate or severe. Serum levels of CRP were detected in the fasting state during the same period.
Results:
Patients were divided into three groups according to the degree of contrast enhancement. Plaque contrast enhancement was not associated with the degree of artery stenosis (P>0.05) or with plaque thickness (P>0.05). Serum CRP levels were positively correlated with the number of new vessels in the plaque. CRP levels increased in the three groups(Grade 1: 3.72±1.79mg/L; Grade 2: 7.88±4.24 mg/L; Grade 3: 11.02±3.52 mg/L), with significant differences among them (F=10.14, P<0.01), and significant differences between each two groups (P<0.05). Spearman’s rank correlation analysis showed that serum CRP levels were positively correlated with the degree of carotid plaque enhancement (rs =0.69, P<0.01).
Conclusions:
The degree of plaque enhancement on CEUS was not significantly correlated with plaque thickness or vascular stenosis. However, CEUS could semi-quantitatively evaluate new vessels in plaques, and there was a positive correlation between the degree of intraplaque neovascularization and serum CRP levels. The combination of serum CRP levels and intraplaque neovascularization detected by CEUS may allow more accurate evaluation of plaque stability.
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Affiliation(s)
| | - Jun Feng
- Xi'an Jiaotong Univ, Xi'an, China
| | | | | | | | - Jian Sun
- Xi'an Jiaotong Univ, Xi'an, China
| | | | - Yan Song
- Xi'an Jiaotong Univ, Xi'an, China
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Wang Y, Zhao N, Qiu J, He X, Zhou M, Cui H, Lv L, Lin X, Zhang C, Zhang H, Xu R, Zhu D, Dang Y, Han X, Zhang H, Bai H, Chen Y, Tang Z, Lin R, Yao T, Su J, Xu X, Liu X, Wang W, Ma B, Liu S, Qiu W, Huang H, Liang J, Wang S, Ehrenkranz RA, Kim C, Liu Q, Zhang Y. Folic acid supplementation and dietary folate intake, and risk of preeclampsia. Eur J Clin Nutr 2015; 69:1145-1150. [PMID: 25626412 DOI: 10.1038/ejcn.2014.295] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 11/18/2014] [Accepted: 12/10/2014] [Indexed: 11/09/2022]
Abstract
BACKGROUND/OBJECTIVES Folic acid supplementation has been suggested to reduce the risk of preeclampsia. However, results from few epidemiologic studies have been inconclusive. We investigated the hypothesis that folic acid supplementation and dietary folate intake before conception and during pregnancy reduce the risk of preeclampsia. SUBJECTS/METHODS A birth cohort study was conducted in 2010-2012 at the Gansu Provincial Maternity & Child Care Hospital in Lanzhou, China. A total of 10,041 pregnant women without chronic hypertension or gestational hypertension were enrolled. RESULTS Compared with nonusers, folic acid supplement users had a reduced risk of preeclampsia (OR=0.61, 95% CI: 0.43-0.87). A significant dose-response of duration of use was observed among women who used folic acid supplemention during pregnancy only (P-trend=0.007). The reduced risk associated with folic acid supplement was similar for mild or severe preeclampsia and for early- or late-onset preeclampsia, although the statistical significant associations were only observed for mild (OR=0.50, 95% CI: 0.30-0.81) and late-onset (OR=0.60, 95% CI: 0.42-0.86) preeclampsia. The reduced risk associated with dietary folate intake during pregnancy was only seen for severe preeclampsia (OR=0.52, 95% CI: 0.31-0.87, for the highest quartile of dietary folate intake compared with the lowest). CONCLUSIONS Our study results suggest that folic acid supplementation and higher dietary folate intake during pregnancy reduce the risk of preeclampsia. Future studies are needed to confirm the associations.
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Affiliation(s)
- Y Wang
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - N Zhao
- Department of Environmental Health Sciences, School of Public Health, Yale University, New Haven, CT, USA
| | - J Qiu
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - X He
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - M Zhou
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - H Cui
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - L Lv
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - X Lin
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - C Zhang
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - H Zhang
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - R Xu
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - D Zhu
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Y Dang
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - X Han
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - H Zhang
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - H Bai
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Y Chen
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Z Tang
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - R Lin
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - T Yao
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - J Su
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - X Xu
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - X Liu
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - W Wang
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - B Ma
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - S Liu
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - W Qiu
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - H Huang
- Department of Environmental Health Sciences, School of Public Health, Yale University, New Haven, CT, USA
| | - J Liang
- Department of Environmental Health Sciences, School of Public Health, Yale University, New Haven, CT, USA
| | - S Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - R A Ehrenkranz
- Department of Pediatrics, School of Medicine, Yale University, New Haven, CT, USA
| | - C Kim
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Department of Health and Human Sciences, Bethesda, MD, USA
| | - Q Liu
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Y Zhang
- Department of Environmental Health Sciences, School of Public Health, Yale University, New Haven, CT, USA
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Choi JG, Bharaj P, Abraham S, Ma H, Yi G, Ye C, Dang Y, Manjunath N, Wu H, Shankar P. Multiplexing seven miRNA-Based shRNAs to suppress HIV replication. Mol Ther 2014; 23:310-20. [PMID: 25358251 DOI: 10.1038/mt.2014.205] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 10/17/2014] [Indexed: 11/09/2022] Open
Abstract
Multiplexed miRNA-based shRNAs (shRNA-miRs) could have wide potential to simultaneously suppress multiple genes. Here, we describe a simple strategy to express a large number of shRNA-miRs using minimal flanking sequences from multiple endogenous miRNAs. We found that a sequence of 30 nucleotides flanking the miRNA duplex was sufficient for efficient processing of shRNA-miRs. We inserted multiple shRNAs in tandem, each containing minimal flanking sequence from a different miRNA. Deep sequencing of transfected cells showed accurate processing of individual shRNA-miRs and that their expression did not decrease with the distance from the promoter. Moreover, each shRNA was as functionally competent as its singly expressed counterpart. We used this system to express one shRNA-miR targeting CCR5 and six shRNA-miRs targeting the HIV-1 genome. The lentiviral construct was pseudotyped with HIV-1 envelope to allow transduction of both resting and activated primary CD4 T cells. Unlike one shRNA-miR, the seven shRNA-miR transduced T cells nearly abrogated HIV-1 infection in vitro. Additionally, when PBMCs from HIV-1 seropositive individuals were transduced and transplanted into NOD/SCID/IL-2R γc(-/-) mice (Hu-PBL model) efficient suppression of endogenous HIV-1 replication with restoration of CD4 T cell counts was observed. Thus, our multiplexed shRNA appears to provide a promising gene therapeutic approach for HIV-1 infection.
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Affiliation(s)
- Jang-Gi Choi
- Department of Biomedical Sciences, Center of Excellence in Infectious Disease Research, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Preeti Bharaj
- Department of Biomedical Sciences, Center of Excellence in Infectious Disease Research, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Sojan Abraham
- Department of Biomedical Sciences, Center of Excellence in Infectious Disease Research, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Hongming Ma
- Department of Biomedical Sciences, Center of Excellence in Infectious Disease Research, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Guohua Yi
- Department of Biomedical Sciences, Center of Excellence in Infectious Disease Research, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Chunting Ye
- Department of Biomedical Sciences, Center of Excellence in Infectious Disease Research, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Ying Dang
- Department of Biomedical Sciences, Center of Excellence in Infectious Disease Research, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - N Manjunath
- Department of Biomedical Sciences, Center of Excellence in Infectious Disease Research, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Haoquan Wu
- Department of Biomedical Sciences, Center of Excellence in Infectious Disease Research, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Premlata Shankar
- Department of Biomedical Sciences, Center of Excellence in Infectious Disease Research, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
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Lü X, Hu P, Dang Y, Liu B. Purification and partial characterization of a novel bacteriocin produced by Lactobacillus casei TN-2 isolated from fermented camel milk (Shubat) of Xinjiang Uygur Autonomous region, China. Food Control 2014. [DOI: 10.1016/j.foodcont.2014.03.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [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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46
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Ma H, Wu Y, Dang Y, Choi JG, Zhang J, Wu H. Pol III Promoters to Express Small RNAs: Delineation of Transcription Initiation. Mol Ther Nucleic Acids 2014; 3:e161. [PMID: 24803291 PMCID: PMC4040628 DOI: 10.1038/mtna.2014.12] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 03/10/2014] [Indexed: 12/17/2022]
Abstract
Pol III promoters such as U6 are commonly used to express small RNAs, including small interfering RNA, short hairpin RNA, and guide RNA, for the clustered regularly interspaced short palindromic repeats genome-editing system. However, whether the small RNAs were precisely expressed as desired has not been studied. Here, using deep sequencing to analyze small RNAs, we show that, for mouse U6 promoter, sequences immediately upstream of the putative initiation site, which is often modified to accommodate the restriction enzyme sites that enable easy cloning of small RNAs, are critical for precise transcription initiation. When the promoter is kept unmodified, transcription starts precisely from the first available A or G within the range of positions −1 to +2. In addition, we show that transcription from another commonly used pol III promoter, H1, starts at multiple sites, which results in variability at the 5′ end of the transcripts. Thus, inaccuracy of 5′ end of small RNA transcripts might be a common problem when using these promoters to express small RNAs based on currently believed concepts. Our study provides general guidelines for minimizing the variability of initiation, thereby enabling more accurate expression of small RNAs.
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Affiliation(s)
- Hongming Ma
- Center of Excellence for Infectious Diseases, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Yonggan Wu
- Department of Genetics, Stanford University, Stanford, California, USA
| | - Ying Dang
- Center of Excellence for Infectious Diseases, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Jang-Gi Choi
- Center of Excellence for Infectious Diseases, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Junli Zhang
- Center of Excellence for Infectious Diseases, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
| | - Haoquan Wu
- Center of Excellence for Infectious Diseases, Department of Biomedical Sciences, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, Texas, USA
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Dang Y, Lin G, Xie Y, Duan J, Ma P, Li G, Ji G. Quantitative Determination of Myricetin in Rat Plasma by Ultra Performance Liquid Chromatography Tandem Mass Spectrometry and its Absolute Bioavailability. Drug Res (Stuttg) 2013; 64:516-22. [DOI: 10.1055/s-0033-1363220] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Y. Dang
- Research Center for Health and Nutrition, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - G. Lin
- Research Center for Health and Nutrition, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Y. Xie
- Research Center for Health and Nutrition, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - J. Duan
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - P. Ma
- Global Pharmaceutical Research and Development, Hospira Inc., McPherson, KS, USA
| | - G. Li
- Pharmacy Department, Shanghai TCM-integrated Hospital, Shanghai, China
| | - G. Ji
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Manjunath N, Yi G, Dang Y, Shankar P. Newer gene editing technologies toward HIV gene therapy. Viruses 2013; 5:2748-66. [PMID: 24284874 PMCID: PMC3856413 DOI: 10.3390/v5112748] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [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: 09/17/2013] [Revised: 11/02/2013] [Accepted: 11/08/2013] [Indexed: 01/27/2023] Open
Abstract
Despite the great success of highly active antiretroviral therapy (HAART) in ameliorating the course of HIV infection, alternative therapeutic approaches are being pursued because of practical problems associated with life-long therapy. The eradication of HIV in the so-called "Berlin patient" who received a bone marrow transplant from a CCR5-negative donor has rekindled interest in genome engineering strategies to achieve the same effect. Precise gene editing within the cells is now a realistic possibility with recent advances in understanding the DNA repair mechanisms, DNA interaction with transcription factors and bacterial defense mechanisms. Within the past few years, four novel technologies have emerged that can be engineered for recognition of specific DNA target sequences to enable site-specific gene editing: Homing Endonuclease, ZFN, TALEN, and CRISPR/Cas9 system. The most recent CRISPR/Cas9 system uses a short stretch of complementary RNA bound to Cas9 nuclease to recognize and cleave target DNA, as opposed to the previous technologies that use DNA binding motifs of either zinc finger proteins or transcription activator-like effector molecules fused to an endonuclease to mediate sequence-specific DNA cleavage. Unlike RNA interference, which requires the continued presence of effector moieties to maintain gene silencing, the newer technologies allow permanent disruption of the targeted gene after a single treatment. Here, we review the applications, limitations and future prospects of novel gene-editing strategies for use as HIV therapy.
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Affiliation(s)
- N. Manjunath
- Authors to whom correspondence should be addressed; E-Mails: (N.M.); (P.S.); Tel.: +1-915-215-4241 (N.M.); +1-915-215-4242 (P.S); Fax: +1-915-783-1271 (N.M. and P.S)
| | | | | | - Premlata Shankar
- Authors to whom correspondence should be addressed; E-Mails: (N.M.); (P.S.); Tel.: +1-915-215-4241 (N.M.); +1-915-215-4242 (P.S); Fax: +1-915-783-1271 (N.M. and P.S)
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Ye X, Cheng X, Liu L, Zhao D, Dang Y. Blood glucose fluctuation affects skin collagen metabolism in the diabetic mouse by inhibiting the mitogen-activated protein kinase and Smad pathways. Clin Exp Dermatol 2013; 38:530-7. [PMID: 23601172 DOI: 10.1111/ced.12002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND We recently reported that in mice, blood glucose fluctuations (BGF) produced more detrimental effects on skin structure and function than did diabetes alone. AIM To determine whether treatment of BGF changes the collagen metabolism in the skin of diabetic mice, and to explore its possible molecular mechanism further. METHODS The study used diabetic and BGF animal models. Immunohistochemistry, western blotting and real-time PCR analysis were used to detect the expression of type I collagen, matrix metalloproteinase (MMP)-1, MMP-2 and MMP-13, tissue inhibitor of metalloproteinase (TIMP)-1, extracellular signal-regulated kinase, p38, and Smad2/3. The activities of mitogen-activated protein kinase (MAPK) and Smad signal molecules were also detected by western blotting, and the skin fibroblast ultrastructure was examined using an electron microscope. RESULTS BGF treatment produced a twofold reduction in type I collagen synthesis compared with diabetes-only mice. Expression of MMP-1, MMP-2 and MMP-13 increased markedly in the BGF-treated mice, but TIMP-1 expression was strongly downregulated by the BGF treatment. There was also evidence of higher levels of apoptosis of skin fibroblasts after BGF treatment. CONCLUSIONS BGF treatment can affect collagen production in the skin of diabetic BGF mice by inhibiting collagen synthesis and increasing collagen degradation. Furthermore, both MAPK and Smad signalling pathways seem to play a role in the inhibition of collagen production in diabetic mice treated with BGF.
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Affiliation(s)
- X Ye
- Institute of Biomedicine, School of Life Science, East China Normal University, Shanghai, China.
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50
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Salazar LG, Slota M, Higgens D, Coveler A, Dang Y, Childs J, Bates N, Guthrie K, Waisman J, Disis ML. Abstract P5-16-04: A phase I study of a DNA plasmid based vaccine encoding the HER-2/neu intracellular domain in subjects with HER2+ breast cancer. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p5-16-04] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
HER2+ breast cancer (BC) is associated with early disease relapse, usually to distant sites. This would suggest relapse is due to residual microscopic disease. Generation of vaccine-induced HER2-specific CD4+ T helper immunity (Th1) may result in immunologic eradication of residual HER2+ tumor cells and subsequent development of immunologic memory and epitope spreading (ES), which has been associated with a survival benefit in vaccinated BC patients. We have shown HER2 peptide-based vaccines can generate immunity in BC however, more recently we developed a plasmid DNA based vaccine (pNGVL3-hICD) which may have additional advantages over synthetic peptides. DNA vaccines offer a strategy to immunize against multiple tumor antigens and are able to elicit both CTL and Th1 immunity. Plasmid DNA can also remain at the vaccine site, providing a constant source of antigen. Intradermal (i.d.) delivery of DNA vaccines with GM-CSF as adjuvant may enhance immunogenicity due to local influx of dermal Langerhans cells. We have recently completed a phase I trial utilizing pNGVL3-hICD in optimally treated stage III and IV HER2+ BC patients and have defined vaccine safety profile, optimal dose and schedule; and demonstrated vaccine biologic activity.
Methods: A total of 66 subjects with stage III and IV HER2+ BC in complete remission were enrolled sequentially into 1 of 3 pNGVL3-hICD dose arms (22 subjects/arm): Arm 1=10µg, Arm 2=100 µg, and Arm 3 = 500µg. All vaccines were admixed with 100µg GM-CSF and given i.d. monthly for a total of 3 vaccines. Toxicity was assessed at baseline, during vaccination and at follow-up. Immune responses to HER ICD and ECD were assessed with IFN-γ ELISPOT at baseline and serially through week 60 post-vaccination. Linear regression analysis was used to compare differences in immune responses from baseline over the whole study period between dose arms. Vaccine site skin biopsies and peripheral lymphocytes were serially analyzed for plasmid persistence via RT-PCR.
Results: 64 subjects (20 in Arm 1; 22 in Arm 2; 22 in Arm 3) completed 3 vaccines. Age, stage/status, number of previous chemotherapy regimens, and use of bisphosphonate and trastuzumab therapies was similar across dose arms. Vaccine-related toxicity was primarily Grade 1/2 injection site reactions, myalgias, arthralgias and not significantly different between arms; no cardiac or grade IV toxicity was observed. Immune responses to HER2 ICD were significantly better in Arms 2 and 3 vs Arm 1 (p = 0.001 and 0.002, respectively) but not statistically different between Arms 2 and 3. 38 patients had DNA plasmid persistence at the vaccination site with no difference between arms. There has been no detection of DNA plasmid in lymphocytes from patients in all arms. Analyses of survival and ES (HER ECD immune responses) are on-going and will be presented.
Conclusions: pNGVL3-hICD was safe and effectively induced persistent HER2 ICD specific Th1 immunity without increased cardiac toxicity. Moreover, immunity was present more than 1 year after end of vaccination, indicative of vaccine-induced immunologic memory.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P5-16-04.
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Affiliation(s)
- LG Salazar
- University of Washington, Seattle, WA; BREASTLINK, Hawthorne, CA
| | - M Slota
- University of Washington, Seattle, WA; BREASTLINK, Hawthorne, CA
| | - D Higgens
- University of Washington, Seattle, WA; BREASTLINK, Hawthorne, CA
| | - A Coveler
- University of Washington, Seattle, WA; BREASTLINK, Hawthorne, CA
| | - Y Dang
- University of Washington, Seattle, WA; BREASTLINK, Hawthorne, CA
| | - J Childs
- University of Washington, Seattle, WA; BREASTLINK, Hawthorne, CA
| | - N Bates
- University of Washington, Seattle, WA; BREASTLINK, Hawthorne, CA
| | - K Guthrie
- University of Washington, Seattle, WA; BREASTLINK, Hawthorne, CA
| | - J Waisman
- University of Washington, Seattle, WA; BREASTLINK, Hawthorne, CA
| | - ML Disis
- University of Washington, Seattle, WA; BREASTLINK, Hawthorne, CA
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