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Meng Z, Guo Y, Deng S, Xiang Q, Cao J, Zhang Y, Zhang K, Ma K, Xie S, Kang Z. Improving image quality of triple-low-protocol renal artery CT angiography with deep-learning image reconstruction: a comparative study with standard-dose single-energy and dual-energy CT with adaptive statistical iterative reconstruction. Clin Radiol 2024; 79:e651-e658. [PMID: 38433041 DOI: 10.1016/j.crad.2024.01.008] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 01/03/2024] [Accepted: 01/09/2024] [Indexed: 03/05/2024]
Abstract
AIM To investigate the improvement in image quality of triple-low-protocol (low radiation, low contrast medium dose, low injection speed) renal artery computed tomography (CT) angiography (RACTA) using deep-learning image reconstruction (DLIR), in comparison with standard-dose single- and dual-energy CT (DECT) using adaptive statistical iterative reconstruction-Veo (ASIR-V) algorithm. MATERIALS AND METHODS Ninety patients for RACTA were divided into different groups: standard-dose single-energy CT (S group) using ASIR-V at 60% strength (60%ASIR-V), DECT (DE group) with 60%ASIR-V including virtual monochromatic images at 40 keV (DE40 group) and 70 keV (DE70 group), and the triple-low protocol single-energy CT (L group) with DLIR at high level (DLIR-H). The effective dose (ED), contrast medium dose, injection speed, standard deviation (SD), signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) of abdominal aorta (AA), and left/right renal artery (LRA, RRA), and subjective scores were compared among the different groups. RESULTS The L group significantly reduced ED by 37.6% and 31.2%, contrast medium dose by 33.9% and 30.5%, and injection speed by 30% and 30%, respectively, compared to the S and DE groups. The L group had the lowest SD values for all arteries compared to the other groups (p<0.001). The SNR of RRA and LRA in the L group, and the CNR of all arteries in the DE40 group had highest value compared to others (p<0.05). The L group had the best comprehensive score with good consistency (p<0.05). CONCLUSIONS The triple-low protocol RACTA with DLIR-H significantly reduces the ED, contrast medium doses, and injection speed, while providing good comprehensive image quality.
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Affiliation(s)
- Z Meng
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - Y Guo
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - S Deng
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - Q Xiang
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - J Cao
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - Y Zhang
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - K Zhang
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China
| | - K Ma
- CT Imaging Research Center, GE HealthCare China, Tianhe District, Huacheng Road 87, Guangzhou, 510623, China
| | - S Xie
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China.
| | - Z Kang
- Department of Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Tianhe District, Tianhe Road, 600, Guangzhou, 510620, China.
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Chong S, Mu GY, Xiang Q, Cui YM. [The role of proprotein convertase subtilisin/kexin 9 in thrombosis]. Zhonghua Xin Xue Guan Bing Za Zhi 2024; 52:215-219. [PMID: 38326076 DOI: 10.3760/cma.j.cn112148-20231007-00224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Affiliation(s)
- S Chong
- Department of Pharmacy, Peking University First Hospital, Beijing 100034, China
| | - G Y Mu
- Department of Pharmacy, Peking University First Hospital, Beijing 100034, China
| | - Q Xiang
- Department of Pharmacy, Peking University First Hospital, Beijing 100034, China
| | - Y M Cui
- Department of Pharmacy, Peking University First Hospital, Beijing 100034, China
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Chen X, Tu Q, Wang D, Liu J, Qin Y, Zhang Y, Xiang Q. Effectiveness of China-PAR and Framingham risk score in assessment of 10-year cardiovascular disease risk in Chinese hypertensive patients. Public Health 2023; 220:127-134. [PMID: 37315498 DOI: 10.1016/j.puhe.2023.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 03/21/2023] [Accepted: 05/10/2023] [Indexed: 06/16/2023]
Abstract
OBJECTIVES Estimating the total risk of cardiovascular disease (CVD) using risk prediction models represents a huge improvement in identifying and treating each of the risk factors. The objective of this study was to evaluate the effectiveness of the China-PAR (Prediction of atherosclerotic CVD risk in China) and Framingham risk score (FRS) in predicting the 10-year risk of CVD in Chinese hypertensive patients. The results of the study can be used to design health promotion strategies. STUDY DESIGN A large cohort study was used to assess the validity of models by comparing model predictions with actual incidence rates. METHODS In total, 10,498 hypertensive patients aged 30-70 years in Jiangsu Province, China, participated in the baseline survey that took place between January and December 2010 and were followed up to May 2020. China-PAR and FRS were used to calculate the predicted 10-year risk of CVD. The 10-year observed incidence of new cardiovascular events was adjusted by the Kaplan-Meier method. The ratio of the predicted risk to the actual incidence was calculated to evaluate the effectiveness of the model. The discrimination Harrell's C statistics and calibration Chi-square value were used to evaluate the predictive reliability of the models. RESULTS Of the 10,498 participants, 4411 (42.02%) were male. During the mean follow-up of 8.30 ± 1.45 years, a total of 693 new cardiovascular events occurred. Both models overestimated the risk of morbidity to varying degrees, and the FRS overestimated to a greater extent. After adjustment for covariates, the results of Cox proportional hazards regression showed that the risk of CVD in the high-risk group was higher than in low-risk group. The degree of discrimination in both models was approximately 0.6, which showed that discrimination was not ideal in the models. In addition, Chi-square calibrations of the two models were <20 in males, which showed that calibration of the models was better for men than women. CONCLUSIONS The China-PAR and FRS models overestimated the risk of CVD for participants in this study. In addition, the degree of discrimination was not ideal, and both models performed better in males than in females in terms of calibration. The results of this study suggest that a more suitable risk prediction model should be established according to the characteristics of the hypertensive population in Jiangsu Province.
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Affiliation(s)
- X Chen
- School of Public Health, Southeast University, Nanjing 210009, China
| | - Q Tu
- Law Enforcement Squadron of Shibei, Hangzhou Xiaoshan District Health and Family Planning Administrative Law Inforcement Brigade, Hangzhou 311203, China
| | - D Wang
- School of Public Health, Southeast University, Nanjing 210009, China
| | - J Liu
- School of Public Health, Southeast University, Nanjing 210009, China
| | - Y Qin
- Department of Chronic Non-communicable Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Y Zhang
- Department of Chronic Non-communicable Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Q Xiang
- School of Public Health, Southeast University, Nanjing 210009, China; Department of Chronic Non-communicable Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China.
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Feng HL, Wang S, Xiang Q, Xu CJ, Zhong Y, Zheng XX, You M, Lan L. [Research progress on moderate and deep sedation during wound dressing change in pediatric burn patients]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:96-100. [PMID: 36740434 DOI: 10.3760/cma.j.cn501225-20220421-00153] [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: 02/07/2023]
Abstract
Moderate and deep sedation can effectively relieve or eliminate the pain and body discomfort during wound dressing change in pediatric burn patients, relieve anxiety, agitation, and even delirium of the children, reduce the metabolic rate of the children, make them in a quiet, comfortable, and cooperative state, which is conducive to the smooth completion of dressing change. This paper summarized the three aspects of moderate and deep sedation in pediatric burn patients, including the overview, main points of implementation, and effects, and further introduced the moderate and deep sedation medication regimens for different routes of administration, as well as the content of evaluation and monitoring. Suggestions on the prevention and management of related complications and the management of moderate and deep sedation implementation procedures were put forward, in order to provide references for the development of moderate and deep sedation for wound dressing change in pediatric burn patients in China.
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Affiliation(s)
- H L Feng
- School of Nursing, Huzhou University, Huzhou 313000, China
| | - S Wang
- School of Nursing, Huzhou University, Huzhou 313000, China
| | - Q Xiang
- School of Nursing, Huzhou University, Huzhou 313000, China
| | - C J Xu
- Department of Nursing, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Y Zhong
- School of Nursing, Huzhou University, Huzhou 313000, China
| | - X X Zheng
- School of Nursing, Huzhou University, Huzhou 313000, China
| | - M You
- School of Nursing, Huzhou University, Huzhou 313000, China
| | - L Lan
- School of Nursing, Huzhou University, Huzhou 313000, China
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Zhou YD, Xiao KR, He ST, Xiang Q. [Extraocular silicone oil migration to orbit: a case report]. Zhonghua Yan Ke Za Zhi 2023; 59:50-51. [PMID: 36631058 DOI: 10.3760/cma.j.cn112142-20220419-00186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Silicone oil insertion is a common modality in vitreoretinal surgeries after ocular perforating injury. It needs surgical removal after several months. Extraocular silicone oil migration to orbit and eyelid is uncommon complication. We reports a case of silicone oil migration to orbit and eyelid. A 41-year-old male presented with left upper eyelid swelling following silicone oil injection 3 years before admission. Orbital computed tomography scan showed multiple high-density well-defined masses in vitreous, left upper eyelid and orbit. We diagnosed the patient with orbital and eyelid mass, meanwhile, speculated mechanical ptosis. Excision of orbital and eyelid masses were performed. Cystic spaces with delicate fibrous wall and small vessels, and clear fluid in cyst were discovered on histologic examination. The patient was followed up after 1 week. The left upper eyelid slightly depressed and the mechanical ptosis was significantly improved.
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Affiliation(s)
- Y D Zhou
- Changsha Aier Eye Hospital, Aier School of Ophthalmology, Central South University, Changsha 410015, China
| | - K R Xiao
- Changsha Aier Eye Hospital, Aier School of Ophthalmology, Central South University, Changsha 410015, China
| | - S T He
- Changsha Aier Eye Hospital, Aier School of Ophthalmology, Central South University, Changsha 410015, China
| | - Q Xiang
- Changsha Aier Eye Hospital, Aier School of Ophthalmology, Central South University, Changsha 410015, China
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Li Y, Xiang Q, Dong B, Liang R, Song Q, Deng L, Ge N, Yue J. Transitional Dynamics of Sarcopenia and Associations of Nutritional Indices with State Transitions in Chinese aged ≥ 50. J Nutr Health Aging 2023; 27:741-751. [PMID: 37754214 DOI: 10.1007/s12603-023-1974-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 07/17/2023] [Indexed: 09/28/2023]
Abstract
OBJECTIVES Sarcopenia's temporal profile can be regarded as a dynamic process with distinct states, in which malnutrition plays an important role. This study aimed to address two research gaps: sarcopenia's transitional dynamics and associations of nutritional indices with state transitions in community-dwelling Chinese adults aged 50 and older. DESIGN A prospective population-based cohort study. SETTING Community-based setting in western China. PARTICIPANTS The analytic sample included data from 1910 participants aged ≥ 50 in the West China Health and Aging Trend study between 2018-2022. MEASUREMENTS We defined three states: the initial normal state (normal muscle strength, physical performance and muscle mass), the worst sarcopenia state (low muscle mass plus low muscle strength and/or low physical performance) and the intermediate subclinical state (the other scenarios). The relevant measurement methods and cut-off points were based on the 2019 AWGS consensus. Using a continuous-time multistate Markov model, we calculated probabilities of transitions between different states over 1, 2 and 4 years; we also examined associations between nutritional indices and transitions, including body mass index (BMI), calf circumference (CC), mid-arm circumference (MAC), triceps skinfold thickness (TST), albumin (ALB), geriatric nutrition risk index (GNRI), vitamin D (VitD) and prealbumin (PA). RESULTS For individuals in the normal state, their probabilities of remaining stable versus progressing to a subclinical state were 53.4% versus 42.1% at 2 years, and 40.6% versus 49.0% at 4 years. In the subclinical population, their 2- and 4-year chances were 60.2% and 51.2% for maintaining this state, 11.8% and 16.2% for developing sarcopenia, 28.0% and 32.6% for reverting to normal. For sarcopenic individuals, the likelihood of staying stable versus retrogressing to the subclinical state were 67.0% versus 26.3% at 2 years, and 48.3% versus 36.3% at 4 years. Increased BMI, CC, MAC, TST, ALB, GNRI and PA correlated with reversion from the subclinical state, among which increased TST, ALB and PA were also paralleled with reversion from sarcopenia, while decreased BMI, CC, MAC, TST and GNRI were associated with progression to sarcopenia. VitD was not significantly associated with any transitions. CONCLUSION This study reveals how sarcopenia changes over time in a Chinese population. It also highlights the usefulness of simple and cost-effective nutritional status indices for indicating state transitions, which can help identify individuals at risk of sarcopenia and guide targeted interventions within the optimal time window.
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Affiliation(s)
- Y Li
- Dr. Jirong Yue, Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, 37 GuoXue Lane, Chengdu, Sichuan 610041, P.R. China, E-mail: ; Dr. Ning Ge, Department of Geriatrics and National Clinical Research Center for Geriatrics, West China Hospital of Sichuan University, 37 GuoXue Lane, Chengdu, Sichuan 610041, P.R. China, E-mail:
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Li L, Zou L, Yue W, Liu C, Wang H, Wen Z, Xiang Q, Ren G, Guo S, Fang J. MicroRNA-29a-3p regulates chemosensitivity in hypopharyngeal carcinoma via targeting Cdc42. Malays J Pathol 2022; 44:53-60. [PMID: 35484886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
INTRODUCTION Hypopharyngeal carcinoma is one kind of high malignant tumour followed by poor prognosis in head and neck carcinomas. This study aimed to detect miR-29a-3p and Cdc42 in patients with hypopharyngeal carcinoma. MATERIALS AND METHODS The expression of miR-29a-3p and Cdc42 mRNA were detected, and the correlation between miR-29a-3p/Cdc42 and clinical stages was investigated. RESULTS The relative expression of miR-29a-3p in stage II, III and IV hypopharyngeal carcinoma tissues was significantly lower than that of stage I (P< 0.05). The relative expression of Cdc42 mRNA in stage I, III and IV tissues was significantly higher than that of stage I (P< 0.05). The expression of miR-29a-3p in hypopharyngeal carcinoma with lymph node metastasis was significantly lower than that without lymph node metastasis (P = 0.045). CONCLUSION MiR-29a-3p and Cdc42 mRNA could be potential diagnostic biomarkers of hypopharyngeal carcinoma.
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Affiliation(s)
- L Li
- Central Hospital of Chaoyang, Department of Otorhinolaryngology Head and Neck Surgery, Liaoning, China
| | - L Zou
- Central Hospital of Chaoyang, Department of Otorhinolaryngology Head and Neck Surgery, Liaoning, China
| | - W Yue
- Central Hospital of Chaoyang, Department of Otorhinolaryngology Head and Neck Surgery, Liaoning, China
| | - C Liu
- Central Hospital of Chaoyang, Department of Otorhinolaryngology Head and Neck Surgery, Liaoning, China
| | - H Wang
- Central Hospital of Chaoyang, Department of Otorhinolaryngology Head and Neck Surgery, Liaoning, China
| | - Z Wen
- Central Hospital of Chaoyang, Department of Otorhinolaryngology Head and Neck Surgery, Liaoning, China
| | - Q Xiang
- Central Hospital of Chaoyang, Department of Otorhinolaryngology Head and Neck Surgery, Liaoning, China
| | - G Ren
- Central Hospital of Chaoyang, Department of Otorhinolaryngology Head and Neck Surgery, Liaoning, China
| | - S Guo
- Central Hospital of Chaoyang, Department of Otorhinolaryngology Head and Neck Surgery, Liaoning, China
| | - J Fang
- Beijing Tongren Hospital, Capital Medical University, Department of Otorhinolaryngology Head and Neck Surgery, Beijing, China.
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Lin C, Fang J, Xiang Q, Zhou R, Yang L. [Exendin-4 promotes autophagy to relieve lipid deposition in a NAFLD cell model by activating AKT/mTOR signaling pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:1073-1078. [PMID: 34308859 DOI: 10.12122/j.issn.1673-4254.2021.07.16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the effect of exendin-4 on lipid deposition in hepatocytes and explore its possible mechanism for treatment of nonalcoholic fatty liver disease (NAFLD). METHODS Human normal hepatocyte line LO2 and hepatoma cell line HepG2 were treated with palmitic acid (PA) to mimic hepatocyte steatosis or with combined treatments with PA+exendin-4 or PA+exendin-4+3BDO. Lipid deposition and proliferation of the two cell lines following treatment with PA or PA+exendin-4 were detected using Oil Red O staining and CCK8 assay, and the expression of p-mTOR, m-TOR, p-AKT, AKT and autophagy-related proteins LC3-Ⅰ/Ⅱ and p62 were detected with Western blotting; the expression of GLP-1R was detected with both Western blotting and immunofluorescence assay. The expression of LC3-Ⅰ/Ⅱ and p62 in the cells following treatment with PA+exendin-4 and PA+exendin-4+3BDO was detected with Western blotting. RESULTS Lipid deposition in the two cell lines increased significantly after PA treatment, but was alleviated by co-treatment with exendin-4. PA treatment significantly inhibited the proliferation of the two cell lines (P < 0.01), and this inhibitory effect was obviously attenuated by exendin-4 (P < 0.05). Immunofluorescence assay showed that both LO2 and HepG2 cells expressed GLP-1R. The expression of p-mTOR was significantly lower and that of p-AKT was higher in cells treated with PA+exendin-4 than in PA-treated cells. Exendin-4 also down-regulated the autophagy-associated protein p62 and up-regulated the expression of LC3-Ⅱ in PA-treated cells, and this effect was obviously reversed by 3BDO. CONCLUSION Exendin-4 may activate the AKT-mTOR signal pathway to promote autophagy via its direct action on GLP-1R. Exendin-4 can also alleviate lipid deposition and promote proliferation of PA-treated hepatocytes, suggesting its important role in PA-induced lipid deposition in hepatocytes.
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Affiliation(s)
- C Lin
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China.,Department of Neurology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - J Fang
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - Q Xiang
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
| | - R Zhou
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - L Yang
- Department of Endocrinology, Zhujiang Hospital, Southern Medical University, Guangzhou 510280, China
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Chen TT, Zhou X, Xu YN, Li Y, Wu XY, Xiang Q, Fu LY, Hu XX, Tao L, Shen XC. Gastrodin ameliorates learning and memory impairment in rats with vascular dementia by promoting autophagy flux via inhibition of the Ca 2+/CaMKII signal pathway. Aging (Albany NY) 2021; 13:9542-9565. [PMID: 33714957 PMCID: PMC8064221 DOI: 10.18632/aging.202667] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 11/30/2020] [Indexed: 12/12/2022]
Abstract
Vascular dementia (VD) is a common disease that occurs during human aging. Gastrodin (GAS) has potential benefits for the prevention and treatment of VD. In the present study, we investigated the effects of GAS on cognitive dysfunction in rats with VD induced by permanent middle cerebral artery occlusion (pMCAO) and explored the underlying mechanism. Immunohistochemical and western blot analyses revealed that GAS attenuated hippocampal levels of LC3 (microtubule-associated protein 1 light chain 3), p62, and phosphorylated CaMKII (Ca2+-calmodulin stimulated protein kinase II) in VD rats. Additionally, our results revealed that cobalt chloride blocked autophagic flux in HT22 cells, which was confirmed by increased levels of LC3 and p62 when combined with chloroquine. Notably, GAS ameliorated the impaired autophagic flux. Furthermore, we confirmed that GAS combined with KN93 (a CaMKII inhibitor) or CaMKII knockdown did not impact the reduced p62 levels when compared with GAS treatment alone. Furthermore, a co-immunoprecipitation assay demonstrated that endogenous p62 bound to CaMKII, as confirmed by mass spectrometric analysis after the immunoprecipitation of p62 from HT22 cells. These findings revealed that GAS attenuated autophagic flux dysfunction by inhibiting the Ca2+/CaMKII signaling pathway to ameliorate cognitive impairment in VD.
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Affiliation(s)
- Ting-Ting Chen
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,Guiyang Maternal and Child Health-Care Hospital, Guiyang 550000, P.R. China.,The Key Laboratory of Optimal Utilization of Natural Medicine Resources and The Union Key Laboratory of Guiyang City, Guizhou Medical University, School of Pharmaceutical Sciences, Guiyang 550025, P.R. China
| | - Xue Zhou
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Yi-Ni Xu
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Yue Li
- Guiyang Maternal and Child Health-Care Hospital, Guiyang 550000, P.R. China
| | - Xiao-Ying Wu
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,The Key Laboratory of Optimal Utilization of Natural Medicine Resources and The Union Key Laboratory of Guiyang City, Guizhou Medical University, School of Pharmaceutical Sciences, Guiyang 550025, P.R. China
| | - Quan Xiang
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,The Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Ling-Yun Fu
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,The Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Xiao-Xia Hu
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,The Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Ling Tao
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Xiang-Chun Shen
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,The Key Laboratory of Optimal Utilization of Natural Medicine Resources and The Union Key Laboratory of Guiyang City, Guizhou Medical University, School of Pharmaceutical Sciences, Guiyang 550025, P.R. China.,The Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education, Guizhou Medical University, Guiyang 550025, P.R. China
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Pastuszak A, Bush M, Curd L, Vijayan S, Priestley T, Xiang Q, Hu Y. 025 Population Pharmacokinetic Modeling and Simulation to Assess the Impact of an 8 Week Maintenance Dosing Regimen for Intramuscular Testosterone Undecanoate. J Sex Med 2021. [DOI: 10.1016/j.jsxm.2021.01.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Fan YC, Zhao Y, Xiang Q, Hu J, Sharma M, Chen H. Change in smoking behaviour of people who suffer from respiratory disease. Int J Tuberc Lung Dis 2020; 24:941-947. [PMID: 33156762 DOI: 10.5588/ijtld.19.0691] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE: To analyse smoking behaviour in patients suffering from non-small cell lung cancer (NSCLC), chronic obstructive pulmonary disease (COPD) and pulmonary TB (PTB).METHODS: The study population comprised 421 inpatients newly diagnosed with NSCLC, COPD and PTB at the First Affiliated Hospital of Chongqing Medical University, Chongqing, China, and 362 healthy individuals (controls) recruited from September 2016 to March 2017. All participants were current smokers. After enrolment, the subjects were invited to participate in face-to-face interviews to complete the self-designed questionnaire. A follow-up survey was performed 2 years later.RESULTS: Two years after being diagnosed, patients with NSCLC, COPD and PTB had smoking cessation rates of respectively 76.8%, 62.8% and 63.7%. The cessation rate was only 10.2% in the control group (P < 0.01). The difficulty of smoking cessation after diagnosis in patients with the three diseases was significantly decreased (P < 0.01).CONCLUSION: The smoking cessation rate among participants suffering from NSCLC, COPD and PTB increased after diagnosis compared with that before diagnosis, and was significantly higher than the control group of healthy individuals.
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Affiliation(s)
- Y C Fan
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, The First Branch, the First Affiliated Hospital of Chongqing Medical University, Chongqing
| | - Y Zhao
- School of Public Health and Management, Chongqing Medical University, Chongqing, Research Center for Medicine and Social Development, Chongqing Medical University, Chongqing, China
| | - Q Xiang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing
| | - J Hu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing
| | - M Sharma
- Department of Behavioral and Environmental Health, Jackson State University, Jackson, MS, USA
| | - H Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing
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XU L, Liu Y, Fan Z, Jiang Z, Liu Y, Ling R, Zhang J, Yu Z, Jin F, Wang C, Cui S, Wang S, Mao D, Xiang Q, Zhang Z, Zhou B, Liu Z, Ma C, Duan X, Cui Y. Assessment of CPS+EG, neo-bioscore and modified neo-bioscore in breast cancer patients treated with preoperative systemic therapy: A multicenter cohort study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz240.073] [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: 11/12/2022] Open
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13
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Li Y, Yu X, Cui Y, Tu W, Shen T, Yan M, Wei Y, Chen X, Wang Q, Chen Q, Gu Y, Zhao K, Xiang Q, Zou L, Ma M. The potential of cadmium ion-immobilized Rhizobium pusense KG2 to prevent soybean root from absorbing cadmium in cadmium-contaminated soil. J Appl Microbiol 2019; 126:919-930. [PMID: 30489679 DOI: 10.1111/jam.14165] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 01/29/2018] [Revised: 10/12/2018] [Accepted: 11/19/2018] [Indexed: 11/28/2022]
Abstract
AIMS Because the effect of Cd2+ -immobilized microbe on Cd uptake of plants in Cd-contaminated soil remains underexplored, this study focuses on the effect of Cd2+ -immobilized rhizobia on Cd uptake of soybean. METHODS AND RESULTS Strain KG2 from soybean nodule was identified as Rhizobium pusense KG2 by phylogenetic analysis. Rhizobium pusense KG2 showed the 120 mg l-1 of minimal lethal concentration for Cd2+ . In 50 and 100 mg l-1 of Cd2+ liquid, approximately 2 × 1010 cells removed 56·71 and 22·11% of Cd2+ , respectively. In pot soil containing 50 and 100 mg kg-1 of Cd2+ , strain KG2 caused a 45·9 and 35·3% decrease in soybean root Cd content, respectively. Meanwhile, KG2 improved the root and shoot length, nitrogen content and biomass of soybean plants and superoxide dismutase activity. CONCLUSIONS The Cd2+ -immobilized rhizobia could inhibit soybean plants to absorb Cd2+ from soil, promote plant growth and improve plant's tolerance against Cd. This study is the first time to report that R. pusense is an effective nodulating rhizobium of legume. SIGNIFICANCE AND IMPACT OF THE STUDY Some Cd2+ -immobilized microbe lowering Cd uptake of plant and promoting plant growth should be considered as an effective strategy for producing safety crops in the Cd-contaminated agricultural soil.
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Affiliation(s)
- Y Li
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - X Yu
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Y Cui
- Sichuan Provincial Academy of Natural Resource and Sciences, Chengdu, China
| | - W Tu
- Sichuan Provincial Academy of Natural Resource and Sciences, Chengdu, China
| | - T Shen
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - M Yan
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Y Wei
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - X Chen
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Q Wang
- Sichuan Provincial Academy of Natural Resource and Sciences, Chengdu, China
| | - Q Chen
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Y Gu
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - K Zhao
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Q Xiang
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - L Zou
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - M Ma
- College of Resources, Sichuan Agricultural University, Chengdu, China
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14
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He GF, Mu TL, Pan YS, Chen ZH, Xiang Q, Yang WY, Zhang Y, Yuan YL, Sun AP. [Inhibitory effect of DAPT on Notch signaling pathway in curcumin mediated photodynamic therapy for cervical cancer xenografts in nude mice]. Zhonghua Yi Xue Za Zhi 2019; 98:1511-1516. [PMID: 29804421 DOI: 10.3760/cma.j.issn.0376-2491.2018.19.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Curcumin was used as photosensitizers in photodynamic therapy on cervical cancer xenografts in nude mice.Analysis the expression changes of Notch and downstream gene as NF-κB and VEGF before and after DAPT inhibition of Notch signaling pathway in vivo experiments.Our aim was to investigate the possible mechanism of Notch signaling pathway in the treatment of cervical cancer with PDT. Methods: A cervical cancer model of nude mice was established by subcutaneous inoculation of human cervical cancer Me180 cells 200 μl.After the success of the model, the experimental animals were divided into 4 groups (model group, curcumin PDT group, simple DAPT group, curcumin-PDT+ DAPT group), each group was 12.Tumor volume changes were analyzed and HE staining was observed in each group.MRNA and protein expression of Notch1 and its downstream NF-κB, VEGF were detected by RT-PCR, immunohistochemistry and Western blot before and after inhibition of Notch signaling pathway by DAPT. Results: Except the control group, the tumor volume of the other three groups remained unchanged or slightly reduced after 1-7 days of treatment.The difference was significant (P<0.05). HE staining showed the most obvious necrosis of curcumin-PDT group with DAPT.Both DAPT and curcumin-PDT could reduce the expression level of Notch1 in mRNA.The inhibition rates were 42.17% and 40.54%, respectively.And the inhibitory effect of curcumin-PDT with DAPT on Notch-1 was the strongest (79.22%) (P<0.01), and two of them had synergistic effect after combination with curcumin-PDT.But the expression of Notch-2 has no obvious inhibitory effect (P>0.05). Both DAPT and curcumin-PDT can inhibit the protein expression of Notch1, NF-κB and VEGF, and two of them have synergistic effect after combined use. Conclusions: DAPT can effectively block the Notch signaling pathway and inhibit the proliferation of cervical cancer cell line Me180.The application of DAPT to inhibit Notch signaling pathway after photodynamic therapy can achieve synergistic effect, which is mainly related to the down-regulation of the expression of Notch1 and NF-κB.Notch signaling pathway may be one of the targets of curcumin-PDT photodynamic therapy.
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Affiliation(s)
- G F He
- Department of Gynecology & Obstetrics, China-Japan Friendship Hospital, Beijing 100029, China
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15
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Bi K, Chen Y, Wan Q, Ye T, Xiang Q, Zheng M, Wang X, Liu Q, Zhang G, Li Y, Liu Y, Duan H. Direct electron-beam patterning of transferrable plasmonic gold nanoparticles using a HAuCl 4/PVP composite resist. Nanoscale 2019; 11:1245-1252. [PMID: 30601520 DOI: 10.1039/c8nr09254k] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Reliable fabrication of gold nanoparticles with desirable size, geometry and spatial arrangement is essential for plasmonic applications. A common fabrication flow usually involves electron-beam lithography and a vacuum-evaporation-based lift-off process or etching. In this work, we evaluate an alternative approach to directly fabricate a plasmonic gold nanoparticle array without involving the vacuum evaporation process by using a chloroauric acid/poly(vinyl pyrrolidone) (HAuCl4/PVP) hybrid as a functional electron-beam resist. Systematic experiments were conducted to investigate the patterning behaviors in the fabrication process. With the optimized fabrication parameters, we show that the HAuCl4/PVP composite resist has a high patterning resolution and pure gold nanoparticles with tens of nanometers can be obtained after an annealing-based pyrolysis process. More particularly, compared to the patterned plasmonic gold nanoparticles obtained by conventional methods, the gold nanoparticles fabricated by our method can be transferred to soft substrates due to the absence of an adhesion layer, enabling various potential applications in flexible and stretchable optics. As an example, we demonstrated that the transferred gold nanoparticle array can be conformably assembled onto a flat gold surface to form a particle-on-film structure for surface-enhanced Raman scattering (SERS) applications.
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Affiliation(s)
- Kaixi Bi
- School of Physics and Electronics, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China
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16
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Xiang Q, Li Z, Zheng M, Liu Q, Chen Y, Yang L, Jiang T, Duan H. Sensitive SERS detection at the single-particle level based on nanometer-separated mushroom-shaped plasmonic dimers. Nanotechnology 2018; 29:105301. [PMID: 29319003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Elevated metallic nanostructures with nanogaps (<10 nm) possess advantages for surface enhanced Raman scattering (SERS) via the synergic effects of nanogaps and efficient decoupling from the substrate through an elevated three-dimensional (3D) design. In this work, we demonstrate a pattern-transfer-free process to reliably define elevated nanometer-separated mushroom-shaped dimers directly from 3D resist patterns based on the gap-narrowing effect during the metallic film deposition. By controlling the initial size of nanogaps in resist structures and the following deposited film thickness, metallic nanogaps could be tuned at the sub-10 nm scale with single-digit nanometer precision. Both experimental and simulated results revealed that gold dimer on mushroom-shaped pillars have the capability to achieve higher SERS enhancement factor comparing to those plasmonic dimers on cylindrical pillars or on a common SiO2/Si substrate, implying that the nanometer-gapped elevated dimer is an ideal platform to achieve the highest possible field enhancement for various plasmonic applications.
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Affiliation(s)
- Quan Xiang
- School of Physics and Electronics, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, People's Republic of China
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17
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Bi K, Xiang Q, Chen Y, Shi H, Li Z, Lin J, Zhang Y, Wan Q, Zhang G, Qin S, Zhang X, Duan H. Direct patterning of highly-conductive graphene@copper composites using copper naphthenate as a resist for graphene device applications. Nanoscale 2017; 9:16755-16763. [PMID: 29072744 DOI: 10.1039/c7nr05779b] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report an electron-beam lithography process to directly fabricate graphene@copper composite patterns without involving metal deposition, lift-off and etching processes using copper naphthenate as a high-resolution negative-tone resist. As a commonly used industrial painting product, copper naphthenate is extremely cheap with a long shelf time but demonstrates an unexpected patterning resolution better than 10 nm. With appropriate annealing under a hydrogen atmosphere, the produced graphene@copper composite patterns show high conductivity of ∼400 S cm-1. X-ray diffraction, conformal Raman spectroscopy and X-ray photoelectron spectroscopy were used to analyze the chemical composition of the final patterns. With the properties of high resolution and high conductivity, the patterned graphene@copper composites could be used as conductive pads and interconnects for graphene electronic devices with ohmic contacts. Compared to common fabrication processes involving metal evaporation and lift-off steps, this pattern-transfer-free fabrication process using copper naphthenate resist is direct and simple but allows comparable device performance in practical device applications.
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Affiliation(s)
- Kaixi Bi
- School of Physics and Electronics, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China.
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18
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Zhao J, Yu X, Yang X, Xiang Q, Duan H, Yu Y. Polarization independent subtractive color printing based on ultrathin hexagonal nanodisk-nanohole hybrid structure arrays. Opt Express 2017; 25:23137-23145. [PMID: 29041617 DOI: 10.1364/oe.25.023137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 09/08/2017] [Indexed: 06/07/2023]
Abstract
Structural color printing based on plasmonic metasurfaces has been recognized as a promising alternative to the conventional dye colorants, though the color brightness and polarization tolerance are still a great challenge for practical applications. In this work, we report a novel plasmonic metasurface for subtractive color printing employing the ultrathin hexagonal nanodisk-nanohole hybrid structure arrays. Through both the experimental and numerical investigations, the subtractive color thus generated taking advantages of extraordinary low transmission (ELT) exhibits high brightness, polarization independence and wide color tunability by varying key geometrical parameters. In addition, other regular patterns including square, pentagonal and circular shapes are also surveyed, and reveal a high color brightness, wide gamut and polarization independence as well. These results indicate that the demonstrated plasmonic metasurface has various potential applications in high-definition displays, high-density optical data storage, imaging and filtering technologies.
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19
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Wang X, Zhu X, Chen Y, Zheng M, Xiang Q, Tang Z, Zhang G, Duan H. Sensitive Surface-Enhanced Raman Scattering Detection Using On-Demand Postassembled Particle-on-Film Structure. ACS Appl Mater Interfaces 2017; 9:31102-31110. [PMID: 28832109 DOI: 10.1021/acsami.7b08818] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Highly sensitive and low-cost surface-enhanced Raman scattering (SERS) substrates are essential for practical applications of SERS. In this work, we report an extremely simple but effective approach to achieve sensitive SERS detection of molecules (down to 10-10 M) by using a particle/molecule/film sandwich configuration. Compared to conventional SERS substrates which are preprepared to absorb analyte molecules for detection, the proposed sandwich configuration is achieved by postassembling a flexible transparent gel tape embedded with plasmonic nanoparticles onto an Au film decorated with to-be-detected analyte molecules. In such a configuration, the individual plasmonic gel tape and Au film have low or no SERS activity but the final assembled sandwich structure shows strong SERS signal due to the formation of numerous hot spots at the particle-film interface, where the analyte molecules themselves serve as both spacer and signal probes. Because of its simple configuration, we demonstrate that the proposed SERS substrate can be obtained over a large area with extremely low cost. Particularly, because of the on-demand nature and the flexibility, such a postassembly strategy provides an ideal solution to detect the pesticide residue on fruit surfaces with significantly enhanced sensitivity.
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Affiliation(s)
| | | | | | - Mengjie Zheng
- Synergetic Innovation Center for Quantum Effects and Applications (SICQEA), Hunan Normal University , Changsha 410081, People's Republic of China
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20
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Yu X, Li Y, Cui Y, Liu R, Li Y, Chen Q, Gu Y, Zhao K, Xiang Q, Xu K, Zhang X. An indoleacetic acid-producing Ochrobactrum sp. MGJ11 counteracts cadmium effect on soybean by promoting plant growth. J Appl Microbiol 2017; 122:987-996. [PMID: 27995689 DOI: 10.1111/jam.13379] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 11/16/2016] [Accepted: 12/08/2016] [Indexed: 11/29/2022]
Abstract
AIMS To analyse whether some indoleacetic acid (IAA)-secreting plant growth-promoting bacteria can alleviate cadmium (Cd) stress, the role of an Ochrobactrum sp. MGJ11 from rhizosphere of soybean in promoting plant growth, and to evaluate the counteracting Cd effects on soybean. METHODS AND RESULTS Ochrobactrum sp. MGJ11 produced 121·2 mg l-1 of IAA. MGJ11 increased soybean root length, shoot length and biomass by 30·1, 30·8 and 13·4% respectively. In liquid medium, no IAA production was detected in Cd concentration of 100 mg l-1 . In soil with 20-80 mg kg-1 Cd, MGJ11 promoted soybean root elongation (29·4-161·4%) and increased the shoot length (up to 52·7%) and biomass (up to 87·2%). After growing for 38 days, Cd concentrations in the roots of inoculated soybean were lower than in those of noninoculated plants. Only a little Cd (2·6-16·9 μg g-1 ) was translocated from the root to shoot. CONCLUSIONS Ochrobactrum sp. MGJ11 secretes IAA and shows tolerance against Cd. MGJ11 inoculation improves the root length, shoot length and biomass of soybean in both vermiculite and Cd vermiculite, and decreases Cd concentration of soybean root. The characteristics of MGJ11 suggest that it could be used for promoting soybean growth and lowering bioavailability of soil Cd for soybean root. SIGNIFICANCE AND IMPACT OF THE STUDY In this study, we isolated a plant growth-promoting Ochrobactrum with the activity of mitigating Cd toxicity to plant roots. The Ochrobactrum can be considered as a potential bioaugmentation agent that promotes plant growth, especially in some agricultural systems, or that helps in the phytoremediation of Cd-contaminated soil.
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Affiliation(s)
- X Yu
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Y Li
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Y Cui
- Sichuan Provincial Academy of Natural Resource and Sciences, Chengdu, China
| | - R Liu
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Y Li
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Q Chen
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Y Gu
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - K Zhao
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - Q Xiang
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - K Xu
- College of Resources, Sichuan Agricultural University, Chengdu, China
| | - X Zhang
- College of Resources, Sichuan Agricultural University, Chengdu, China
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21
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Xiang Q, Li C, Zhao X, Cui YM. The influence of CYP3A5*3
and BCRPC421A
genetic polymorphisms on the pharmacokinetics of felodipine in healthy Chinese volunteers. J Clin Pharm Ther 2017; 42:345-349. [PMID: 28244604 DOI: 10.1111/jcpt.12505] [Citation(s) in RCA: 10] [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] [Received: 07/11/2016] [Accepted: 01/11/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Q. Xiang
- Department of Pharmacy, Base for Clinical Trial; Peking University First Hospital; Beijing China
| | - C. Li
- Department of Pharmacy, Base for Clinical Trial; Peking University First Hospital; Beijing China
| | - X. Zhao
- Department of Pharmacy, Base for Clinical Trial; Peking University First Hospital; Beijing China
| | - Y. M. Cui
- Department of Pharmacy, Base for Clinical Trial; Peking University First Hospital; Beijing China
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22
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Zheng M, Zhu X, Chen Y, Xiang Q, Duan H. Three-dimensional donut-like gold nanorings with multiple hot spots for surface-enhanced raman spectroscopy. Nanotechnology 2017; 28:045303. [PMID: 27981948 DOI: 10.1088/1361-6528/28/4/045303] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Seeking for the best possible substrates for surface-enhanced Raman spectroscopy (SERS) is of great interest for single-molecule-level detection applications. Lithographic plasmonic nanostructures are supposed to enable uniform enhancement and thus have attracted extensive interest in the past decade. In this work, we propose and demonstrate a lithographic three-dimensional (3D) donut-like gold nanoring array as a SERS substrate with an enhancement factor (EF) up to 3.84 × 107. This 3D nanoring array could be directly fabricated using electron-beam-lithography-defined templates without any additional lift-off process and thus promises ultraclean metallic surfaces. Meanwhile, the 3D configuration allows multiple hot spots for improving SERS performance compared to planar counterparts with comparable plasmon resonance position. Systematic experiments and simulations were conducted to gain understanding of the origin of the improved SERS performance. The results imply that the 3D donut-like gold nanorings with multiple hot spots can serve as a promising configuration for SERS applications.
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Affiliation(s)
- Mengjie Zheng
- School of Electronics and Physics, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, People's Republic of China
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23
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Xiang Q, Chen Y, Li Z, Bi K, Zhang G, Duan H. An anti-ultrasonic-stripping effect in confined micro/nanoscale cavities and its applications for efficient multiscale metallic patterning. Nanoscale 2016; 8:19541-19550. [PMID: 27878197 DOI: 10.1039/c6nr07585a] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report a method to reliably and efficiently fabricate high-fidelity metallic structures from a ten-nanometer to a millimeter scale based on an anti-ultrasonic-stripping (AUS) effect in confined micro/nanoscale cavities. With this AUS effect, metallic structures, which are surrounded by the pre-patterned closed templates, could be defined through selectively removing the evaporated metallic layer at the top and outside of the templates by ultrasonic-cavitation-induced stripping. Because only pre-patterned templates are required for exposure in this multiscale patterning process, this AUS-based process enables much smaller and more reliable plasmonic nanogaps due to the mitigated proximity effect and allows rapid fabrication of multiscale metallic structures which require both tiny and large structures. With unprecedented efficiency and resolution down to a ten-nanometer scale, various metallic structures were fabricated using this AUS-effect-based multiscale patterning process. This AUS effect paves the way for direct writing of metallic structures with a high resolution over a large area for practical applications in plasmonics and nanogap-based electronics.
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Affiliation(s)
- Quan Xiang
- School of Physics and Electronics, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China
| | - Yiqin Chen
- School of Physics and Electronics, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China
| | - Zhiqin Li
- School of Physics and Electronics, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China
| | - Kaixi Bi
- School of Physics and Electronics, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China
| | - Guanhua Zhang
- College of Mechanical and Vehicle Engineering, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China.
| | - Huigao Duan
- College of Mechanical and Vehicle Engineering, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China.
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Zhou S, Sheng XY, Xiang Q, Wang ZN, Zhou Y, Cui YM. Comparing the effectiveness of pharmacist‐managed warfarin anticoagulation with other models: a systematic review and meta‐analysis. J Clin Pharm Ther 2016; 41:602-611. [PMID: 27677651 DOI: 10.1111/jcpt.12438] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Accepted: 07/29/2016] [Indexed: 12/01/2022]
Affiliation(s)
- S. Zhou
- Department of Pharmacy Peking University First Hospital Beijing China
| | - X. Y. Sheng
- Department of Pharmacy Peking University First Hospital Beijing China
| | - Q. Xiang
- Department of Pharmacy Peking University First Hospital Beijing China
| | - Z. N. Wang
- Department of Pharmacy Peking University First Hospital Beijing China
| | - Y. Zhou
- Department of Pharmacy Peking University First Hospital Beijing China
| | - Y. M. Cui
- Department of Pharmacy Peking University First Hospital Beijing China
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25
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Wei S, Zheng M, Xiang Q, Hu H, Duan H. Optimization of the particle density to maximize the SERS enhancement factor of periodic plasmonic nanostructure array. Opt Express 2016; 24:20613-20. [PMID: 27607665 DOI: 10.1364/oe.24.020613] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Low-cost surface-enhanced Raman scattering (SERS) substrate with the largest possible enhancement factor is highly desirable for SERS-based sensing applications. In this work, we systematically investigated how the density of plasmonic nanostructures affects the intensity of SERS signal. By directly depositing of metallic layer on electron-beam-lithography defined dielectric nanoposts, plasmonic structures array with different densities were reliably fabricated for SERS measurements. Two main experimental phenomena were obtained: (1) the SERS intensity did not increase monotonically when increasing the density of plasmonic structures, and (2) these ultra-dense plasmonic structures resulted in the maximal SERS intensity. These results could be well explained based on finite-difference time domain (FDTD) simulations and provide robust experimental evidences to guide the design of the best possible SERS substrate.
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26
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Xiang Q, Chen Y, Wang Y, Zheng M, Li Z, Peng W, Zhou Y, Feng B, Chen Y, Duan H. Low-voltage-exposure-enabled hydrogen silsesquioxane bilayer-like process for three-dimensional nanofabrication. Nanotechnology 2016; 27:254002. [PMID: 27175929 DOI: 10.1088/0957-4484/27/25/254002] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report a bilayer-like electron-beam lithographic process to obtain three-dimensional (3D) nanostructures by using only a single hydrogen silsesquioxane (HSQ) resist layer. The process utilizes the short penetration depth of low-energy (1.5 keV) electron irradiation to first obtain a partially cross-linked HSQ top layer and then uses a high-voltage electron beam (30 keV) to obtain self-aligned undercut (e.g. mushroom-shaped) and freestanding HSQ nanostructures. Based on the well-defined 3D resist patterns, 3D metallic nanostructures were directly fabricated with high fidelity by just depositing a metallic layer. As an example, Ag-coated mushroom-shaped nanostructures were fabricated, which showed lower plasmon resonance damping compared to their planar counterparts. In addition, the undercut 3D nanostructures also enable more reliable lift-off in comparison with the planar nanostructures, with which high-quality silver nanohole arrays were fabricated which show distinct and extraordinary optical transmission in the visible range.
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Affiliation(s)
- Quan Xiang
- School of Physics and Electronics, State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People's Republic of China
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Hoff M, Andre J, Xiang Q. TU-H-206-05: Investigating the Resistance of GS-BSSFP to Motion Artifacts. Med Phys 2016. [DOI: 10.1118/1.4957650] [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: 11/07/2022] Open
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Abstract
We report a unique lithographic process, termed "Sketch and Peel" lithography (SPL), for fast, clean, and reliable patterning of metallic structures from tens of nanometers to submillimeter scale using direct writing technology. The key idea of SPL process is to define structures using their presketched outlines as the templates for subsequent selective peeling of evaporated metallic layer. With reduced exposure area, SPL process enables significantly improved patterning efficiency up to hundreds of times higher and greatly mitigated proximity effect compared to current direct writing strategy. We demonstrate that multiscale hierarchical metallic structures with arbitrary shapes and minimal feature size of ∼15 nm could be defined with high fidelity using SPL process for potential nanoelectronic and nano-optical applications.
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Affiliation(s)
- Yiqin Chen
- School of Physics and Electronics, Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University , Changsha 410082, People's Republic of China
| | - Quan Xiang
- School of Physics and Electronics, Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University , Changsha 410082, People's Republic of China
| | - Zhiqin Li
- School of Physics and Electronics, Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University , Changsha 410082, People's Republic of China
| | - Yasi Wang
- School of Physics and Electronics, Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University , Changsha 410082, People's Republic of China
| | - Yuhan Meng
- School of Physics and Electronics, Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University , Changsha 410082, People's Republic of China
| | - Huigao Duan
- School of Physics and Electronics, Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University , Changsha 410082, People's Republic of China
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Xiang Q, Zhu X, Chen Y, Duan H. Surface enhanced Raman scattering of gold nanoparticles supported on copper foil with graphene as a nanometer gap. Nanotechnology 2016; 27:075201. [PMID: 26762890 DOI: 10.1088/0957-4484/27/7/075201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Gaps with single-nanometer dimensions (<10 nm) between metallic nanostructures enable giant local field enhancements for surface enhanced Raman scattering (SERS). Monolayer graphene is an ideal candidate to obtain a sub-nanometer gap between plasmonic nanostructures. In this work, we demonstrate a simple method to achieve a sub-nanometer gap by dewetting a gold film supported on monolayer graphene grown on copper foil. The Cu foil can serve as a low-loss plasmonically active metallic film that supports the imaginary charge oscillations, while the graphene can not only create a stable sub-nanometer gap for massive plasmonic field enhancements but also serve as a chemical enhancer. We obtained higher SERS enhancements in this graphene-gapped configuration compared to those in Au nanoparticles on Cu film or on graphene-SiO2-Si. Also, the Raman signals measured maintained their fine features and intensities over a long time period, indicating the stability of this Au-graphene-Cu hybrid configuration as an SERS substrate.
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Affiliation(s)
- Quan Xiang
- School of Physics and Electronics, State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People's Republic of China
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30
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Wang X, Wu Z, Xiang Q, Li Z, Zhang R, Chen J, Xia L, Lin S, Yu W, Ma Z, Xie Z, Jiang S. Characterization of the nuclear localization signals of duck circovirus replication proteins. Acta Virol 2015; 59:423-8. [PMID: 26666192 DOI: 10.4149/av_2015_04_423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Duck circovirus (DuCV) possess a circular, single-stranded DNA genome that requires the replication protein (Rep) for its replication. Based on the viral genotype, there are two categories of Rep proteins: Rep1 and Rep2. To characterize the nuclear localization signals (NLSs) conferring the nuclear localization of the Rep proteins, defined coding regions of the rep gene of two genotypes of DuCV were cloned and co-expressed with the red fluorescent protein DsRed2. The results showed that deleting the putative N-terminal NLS located at amino acid residues 10-37 of Rep1 and Rep2 abrogated nuclear translocation, while deleting the putative C-terminal NLS located at residues 244-274 of Rep1 did not significantly alter its subcellular localization, confirming that only the NLS located at residues 10-37 in the N-termini of the Rep proteins had nuclear targeting activity.
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Chen Y, Li Z, Xiang Q, Wang Y, Zhang Z, Duan H. Reliable fabrication of plasmonic nanostructures without an adhesion layer using dry lift-off. Nanotechnology 2015; 26:405301. [PMID: 26377237 DOI: 10.1088/0957-4484/26/40/405301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Lift-off is the most commonly used pattern-transfer method to define lithographic plasmonic metal nanostructures. A typical lift-off process is realized by dissolving patterned resists in solutions, which has the limits of low yield when not using adhesion layers and incompatibility with the fabrication of some specific structures and devices. In this work, we report an alternative 'dry' lift-off process to obtain metallic nanostructures via mechanical stripping by using the advantage of poor adhesion between resists and noble metal films. We show that this dry stripping lift-off method is effective for both positive- and negative-tone resists to fabricate sparse and densely-packed plasmonic nanostructures, respectively. In particular, this method is achieved without using an adhesion layer, which enables the mitigation of plasmon damping to obtain larger field enhancement. Dark-field scattering, one-photon luminescence and surface-enhanced Raman scattering measurements were performed to demonstrate the improved quality factor of the plasmonic nanostructures fabricated by this dry lift-off process.
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Affiliation(s)
- Yiqin Chen
- School of Electronics and Physics, State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, People's Republic of China
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Zhao Q, Yu WW, Sun Y, Cong R, Xiang Q, Qin N, He XQ, Dai N. WO 3 Nanoparticles Based Gas Sensor for Acetone Detection with High Sensitivity and Fast Response. ACTA ACUST UNITED AC 2015. [DOI: 10.1166/sl.2015.3546] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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33
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Hoff M, Xiang Q, Wilson G, Andre J. MO-G-18C-01: BEST IN PHYSICS (IMAGING) - Novel Correction of Signal Modulation and Motion Artifacts in Temporal Bone BSSFP MRI. Med Phys 2014. [DOI: 10.1118/1.4889212] [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: 11/07/2022] Open
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34
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Wang C, Xiang Q, Diao Y, Ren Y, Gu N. Differential antinociceptive effects of intrathecal administration of C-terminal esterified endomorphin-2 analogues in mice. Eur J Pain 2014; 18:1157-64. [DOI: 10.1002/j.1532-2149.2014.00462.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2014] [Indexed: 11/09/2022]
Affiliation(s)
- C.L. Wang
- School of Life Science and Technology; State Key Laboratory of Urban Water Resource and Environment; Instrumental Science and Technology; School of Electrical Engineering and Automation; Harbin Institute of Technology; China
| | - Q. Xiang
- School of Life Science and Technology; State Key Laboratory of Urban Water Resource and Environment; Instrumental Science and Technology; School of Electrical Engineering and Automation; Harbin Institute of Technology; China
| | - Y.X. Diao
- School of Life Science and Technology; State Key Laboratory of Urban Water Resource and Environment; Instrumental Science and Technology; School of Electrical Engineering and Automation; Harbin Institute of Technology; China
| | - Y.K. Ren
- School of Mechatronics Engineering; Harbin Institute of Technology; China
| | - N. Gu
- School of Life Science and Technology; State Key Laboratory of Urban Water Resource and Environment; Instrumental Science and Technology; School of Electrical Engineering and Automation; Harbin Institute of Technology; China
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Xiang Q, Wang CL, Song S, Shi TJ. WITHDRAWN: Highly efficient agonist-induced internalization of somatostatin SST2 receptor in mouse dorsal root ganglion and spinal cord: Molecular evidence for mechanism of somatostatin inhibits neuropathic pain. Regul Pept 2013:S0167-0115(13)00042-6. [PMID: 23507148 DOI: 10.1016/j.regpep.2013.03.013] [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] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Revised: 11/29/2012] [Accepted: 03/03/2013] [Indexed: 06/01/2023]
Affiliation(s)
- Q Xiang
- School of Life Sciences and Technology, Harbin Institute of Technology, Harbin, China.
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36
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Xiang Q, Huang D, Zhao Y, Wang G, Liu Y, Zhong L, Luo T. Caudal dexmedetomidine combined with bupivacaine inhibit the response to hernial sac traction in children undergoing inguinal hernia repair. Br J Anaesth 2013; 110:420-4. [DOI: 10.1093/bja/aes385] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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37
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Xiang Q, Sun X, Zhu G, Sun H, Wan Y, Si Z, Duan Q. 2,3,4,5‐Tetraphenylbiphenyl‐Containing Cu
I
/Re
I
Complexes: Synthesis, Property Analysis and Theoretical Studies. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Quan Xiang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China, Fax: +86‐431‐85583015
| | - Xin Sun
- School of Chemistry & Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China
| | - Guoyu Zhu
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China, Fax: +86‐431‐85583015
| | - Haiying Sun
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China, Fax: +86‐431‐85583015
| | - Yuchun Wan
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China, Fax: +86‐431‐85583015
| | - Zhenjun Si
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China, Fax: +86‐431‐85583015
- Institute of Organic Chemistry & Biochemistry, Czech Academy of Science, 16610 Praha 6, Czech Republic
| | - Qian Duan
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China, Fax: +86‐431‐85583015
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Lou G, Zhang Q, Xiao F, Xiang Q, Su Z, Zhang L, Yang P, Yang Y, Zheng Q, Huang Y. Intranasal administration of TAT-haFGF(₁₄₋₁₅₄) attenuates disease progression in a mouse model of Alzheimer's disease. Neuroscience 2012; 223:225-37. [PMID: 22885230 DOI: 10.1016/j.neuroscience.2012.08.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 07/26/2012] [Accepted: 08/02/2012] [Indexed: 01/01/2023]
Abstract
Human acidic fibroblast growth factor (haFGF), a neurotrophin-like growth factor in the brain, plays important roles in the development, differentiation and regeneration of brain neurons, which makes it potential to treat Alzheimer's disease (AD). In this study, haFGF(14-154) and TAT-haFGF(14-154) (haFGF(14-154) fused with the cell-penetrating peptide transactivator of transcription protein transduction domain (TAT-PTD)) were intranasally administrated for 5 weeks to investigate the effects on senescence-accelerated mouse prone-8 (SAMP8) mice (a mouse model of AD). Results showed that TAT-PTD could increase the concentration of haFGF in the brain significantly, and TAT-haFGF(14-154) was more effective than haFGF(14-154) in the same dosage (300 μg/kg). Importantly, TAT-haFGF(14-154) improved the learning and memory abilities of SAMP8 mice in the behavioral test, and promoted the function of cholinergic system by measuring the relevant biomarkers (acetylcholine (ACh) level, acetylcholinesterase (AChE) and choline acetyltransferase (ChAT) activities). TAT-haFGF(14-154) also significantly reduced β-amyloid protein(1-42) (Aβ(1-42)) deposits as well as the levels of Aβ soluble forms in the mice brains and prevented the neurons from apoptosis. Besides, the oxidative stress impairment in the brain and serum was also ameliorated. The results suggest that TAT-haFGF(14-154) could attenuate the disease progression of SAMP8 AD mice, and the mechanism is related to the regulation of neurons microenvironment including neurotransmitters, Aβ pathology and oxidative stress.
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Affiliation(s)
- G Lou
- Institute of Biomedicine, Jinan University, Guangzhou 510632, China
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Alexeeva E, Kozlova A, Valieva S, Bzarova T, Chomahizde A, Isaeva K, Denisova R, Slepcova T, Starkova A, Amirdzhanova V, Alexandrova E, Avdeeva A, Novikov A, Panasyuk E, Cherkasova M, Klimova N, Nasonov E, Aggarwal A, Sharma A, Bhatnagar A, Dubula T, Mody GM, Abdel-Wahab N, Tayseer Khedr S, Rashad E, Alkady E, Mosad, Owino L, Ubeer A, Pan Z, Liu X, Xu J, Zhang Y, Omurzakova NA, Volkava M, Kundzer A, Generalov I, Tan W, Wu H, Zhao J, Derber LA, Lee DM, Shadick NA, Conn DL, Smith EA, Gersuk VH, Nepom GT, Moreland LW, Furst DE, Thompson SD, Jonas BL, Michael Holers V, Glass DN, Chen PP, Louis Bridges S, Weinblatt ME, Paulus HE, Tsao BP, Umar S, Ahmad S, Kant Katiyar C, Khan HA, Munoz A, Martinez R, Rodriguez S, Luis Marenco J, Lu Z, Guo-chun W, Shah D, Bhatnagar A, Wanchu A, Sherif Suliman YA, Budhoo A, Mody GM, Hristova M, Kamenarska Z, Dourmishev L, Baleva M, Kaneva R, Savov A, Retamozo S, Diaz-Lagares C, Brito-Zeron P, Gomez ME, Bosch X, Bove A, Forns X, Yague J, Ramos-Casals M, Chen Z, Li XM, Wang GS, Qian L, Li XP, Zu N, Zhao H, Xu B, Li HY, Xiang Q, Wang GC, Mazur-Nicorici L, Mazur M, Crib L, Ding H, Chen S, Ye S, Fedorenko E, Lukina G, Sigidin Y, Hammam N, Orabi H, Lue TF, Goel R, Danda D, Eapen C, Mathew J, Kumar S. Abstracts from EIR School ES01-ES25. Rheumatology (Oxford) 2012. [DOI: 10.1093/rheumatology/ker439] [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: 11/14/2022] Open
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Bradley J, Prior P, Sparks I, Xiang Q, Santana-Davila R, Walker A, Wilson JF, Li XA, White J. P3-13-05: Analysis of Heart Dose-Volume Parameters and Cardiac Events among Node Positive Breast Cancer (NPBC) Patients Treated with Three-Dimensional Conformal Radiation Therapy (3D-CRT). Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p3-13-05] [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
Background
For NPBC patients the use of regional nodal irradiation (RNI) to the supraclavicular, axillary, internal mammary lymph nodes (IMN) in addition to the chest wall and/or breast can maximize locoregional control and improve overall survival. However, comprehensive RNI for breast cancers located on the left side has been linked to late cardiac morbidity, potentially lessening the therapeutic benefit of treatment. The optimal radiation dose-volume constraints for the heart in this setting are not fully understood. We examined NPBC patients treated with RNI using 3D-CT based radiation therapy (RT) to evaluate cardiac dose and incidence of cardiac events.
Methods: Between 2000 and 2007, 150 NPBC patients were treated with RNI following lumpectomy or mastectomy using 3D-CRT. In all cases, treatment target and normal tissue volumes were delineated on treatment CT scans. The heart contour included the ventricles and the left atrium. The dose-volume histogram of the cardiac doses delivered and the incidence of cardiac events is reported.
Results: Median follow-up of surviving patients is 7 (1-10.6) years. Median patient age is 50 (27-91). 52.35% are premenopausal, 75.7% estrogen receptor positive, 66.3% progesterone receptor positive and 15.92% HER-2 positive. Mean positive lymph nodes is 5 (1-29). Extracapsular extension is present in 47.31%. Mean microscopic tumor size is 3.73 (0.1-21) cm. The IMN receive > 40 Gy in 65.5%. 94% had chemotherapy, and in 82.3% it was anthracycline-based. At the time of RT, 12.2% smoked, 9.5% had diabetes, 32.4% with hypertension, and 4.7% with a history of coronary artery disease.
There was 1 (0.7%) right sided patient with cardiac events and 4 (2.7%) left sided experiencing cardiac events (p = 0.121, Fisher's Exact test). A total of 10 cardiac diagnoses were experienced among the 5 patients: coronary artery disease with myocardial infarction (3), congestive heart failure (2), cardiomyopathy (2), and arrhythmia (3). The median time interval to onset of the events is 2.5 years (0-4.3 years).
The cardiac doses among 150 patients are as follows: mean V25 is 5.7, (0.0 - 20.0%), V25 is < 9 % in 74.4% of patients, mean V45 is 1.8% (0-13.3%), V45 is < 5.5% in 91.8%. The mean maximum point dose is 42.8 Gy, and the mean heart dose is 5.6 Gy (0.2−25.3 Gy). The mean V25 and V45 in those 5 patients with a cardiac event is 6.7% (0.9−11.9%) and 3.7% (0-6.6%), respectively; in the 145 remaining patients, 5.7% (0-20.0%) and 1.7% (0-13.3%), respectively. The mean heart dose in those with an event is 5.2 Gy (2.4−7.3 Gy) versus 5.6 Gy (0.2−25.3 Gy) in the remaining patients.
Conclusions: The cardiac event rate among these NPBC patients treated with RNI and anthracycline-based chemotherapy is low. However, those patients with cardiac events have a higher mean V45. No other dose-volume relationships are discernible. Additional analysis using 3DCRT volumes are important to validate these findings and better define the dose-volume parameters for cardiac toxicity.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P3-13-05.
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Affiliation(s)
- J Bradley
- 1Medical College of Wisconsin, Milwaukee, WI
| | - P Prior
- 1Medical College of Wisconsin, Milwaukee, WI
| | - I Sparks
- 1Medical College of Wisconsin, Milwaukee, WI
| | - Q Xiang
- 1Medical College of Wisconsin, Milwaukee, WI
| | | | - A Walker
- 1Medical College of Wisconsin, Milwaukee, WI
| | - JF Wilson
- 1Medical College of Wisconsin, Milwaukee, WI
| | - XA Li
- 1Medical College of Wisconsin, Milwaukee, WI
| | - J White
- 1Medical College of Wisconsin, Milwaukee, WI
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Kharofa J, Cohen E, Tomic R, Xiang Q, Gore E. Angiotensin Converting Enzyme Inhibitor Mitigation of Radiation Pneumonitis. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.1132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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Sparks I, Prior P, Xiang Q, Li XA, Yen TW, White JR. Lymphedema and arm symptoms following three-dimensional conformal radiation therapy (3DCRT) for node-positive breast cancer (BC) patients. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.27_suppl.130] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
130 Background: Regional nodal irradiation for lymph node (LN) positive BC after lumpectomy/mastectomy can be subject to controversy due to the potential for treatment morbidity particularly lymphedema. Little is known about lymphedema and other arm morbidity rates after 3DCRT approaches. Methods: 172 LN positive BC cases treated from 2000 to 2007 using 3-DCRT and Dose Volume Histogram analyses were studied. All cases underwent axillary node dissection (AND). Axillary target volumes (ATV) were delineated on all treatment planning CT scans. Field arrangement and beam modifications were selected to deliver a min of 45 Gy to 90% of the ATV. Post-treatment bilateral arm circumference measurements (96%) and patient reported ipsilateral arm symptoms (thickness, heaviness, tingling, numbness) were recorded. Results: Median follow-up was 83.7 months. Median (med) patient age was 50. 52% were premenopausal. 76/66% had positive estrogen/progesterone receptors and 16% were HER2+. 52% underwent lumpectomy and 46% mastectomy. Median number of LN removed was 17 (1-46), number +LN was 3 (1-29), and tumor size was 3.7 cm. For 79 patients with separate AND the mean resected axillary volume was 157.8 cc (med 171 cc, range 25-472 ). The mean contoured ATV was 69 cc (med 58cc, range 16-608). On average 95% of the ATV was covered by a med of 44.7 Gy. Local control was achieved in 94.7% regional LN control in 99.4%. 16.7% met criteria for lymphedema (> 2 cm difference in circumference). Arm symptoms were reported by 51 (30%) of these 20 (39%) had measured circumference change > 2 cm. Referral to physical therapy was documented for 15% for reduced ROM but at last follow-up noted in 2.3%. The measured lymphedema rate was higher in patients who had mastectomy – 22 v. 11% (p=0.042) and worse with increasing resected axillary dissection volumes (p=0.032), ATV volume (p=0.883), and RT dose inhomgeneity coefficient (p = 0.049). Conclusions: Measured lymphedema rates following AND and 3-DCRT in this study were similar to those reported for AND in randomized studies compared to sentinel node. Careful attention to 3DCRT methods may help optimize lymphedema rates.
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Affiliation(s)
- I. Sparks
- Medical College of Wisconsin, Milwaukee, WI
| | - P. Prior
- Medical College of Wisconsin, Milwaukee, WI
| | - Q. Xiang
- Medical College of Wisconsin, Milwaukee, WI
| | - X. A. Li
- Medical College of Wisconsin, Milwaukee, WI
| | - T. W. Yen
- Medical College of Wisconsin, Milwaukee, WI
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Zhao YL, Xiang Q, Shi QY, Li SY, Tan L, Wang JT, Jin XG, Luo AL. GABAergic excitotoxicity injury of the immature hippocampal pyramidal neurons' exposure to isoflurane. Anesth Analg 2011; 113:1152-60. [PMID: 21918167 DOI: 10.1213/ane.0b013e318230b3fd] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Certain anesthetics exhibit neurotoxicity in the brains of immature but not mature animals. γ-Aminobutyric acid (GABA), the primary inhibitory neurotransmitter in the adult brain, is excitatory on immature neurons via its action at the GABAA receptor, depolarizing the membrane potential and inducing a cytosolic Ca2+ increase ([Ca2+]i), because of a reversed transmembrane chloride gradient. Recent experimental data from several rodent studies have demonstrated that exposure to isoflurane during an initial phase causes neuronal excitotoxicity and apoptosis. GABAA receptor-mediated synaptic voltage-dependent calcium channels' (VDCCs) overactivation and Ca2+ influx are involved in these neural changes. METHODS We monitored [Ca2+]i using Fluo-4 AM fluorescence imaging. Using whole-cell patch clamp techniques, IVDCC (voltage-dependent calcium channel currents) were recorded from primary cultures of rat hippocampal neurons (5-day culture) exposed to isoflurane. To further investigate the neurotoxicity of high cytosolic-free calcium after isoflurane in a dose- and time-dependent manner, the possibility of increased caspase-3 levels was evaluated by Western blot and quantitative real-time polymerase chain reaction. Statistical significance was assessed using the Student t test or 1-way analysis of variance followed by the Tukey post hoc test. RESULTS Under control conditions, isoflurane enhanced the GABA-induced [Ca2+]i increase in a dose-dependent manner. Dantrolene and nicardipine markedly inhibited this enhancement mediated by isoflurane. Moreover, in Ca2+-free media, pretreatment with isoflurane did not show any influence on the caffeine-induced increase of [Ca2+]i. Similarly, using whole-cell recording, isoflurane increased the peak amplitude of IVDCC in the cultured neurons from rat hippocampus by depolarization pulses. Isoflurane (0.25, 0.5, 0.75, and 1 minimum alveolar concentration [MAC]) potentiated IVDCC peak current amplitude by 109.11%±9.03%, 120.56%±11.46%, 141.33%±13.87%, and 146.78%±15.87%, respectively. To analyze variation in protein levels, the effect of treatments with isoflurane on caspase-3 activity was dose- and time-dependent, reaching a maximal caspase-3 activity after exposure to 1 MAC for 6 hours (P<0.001). However, in the mRNA levels, hippocampal caspase-3 mRNA levels began to be significantly increased in isoflurane-treated developing rat hippocampal neurons after 6 hours of exposure to 0.25 MAC isoflurane (P<0.001). CONCLUSIONS Isoflurane-mediated enhancement of GABA-triggered [Ca2+]i release results from membrane depolarization with subsequent activation of VDCCs and further Ca2+-induced Ca2+ release from the ryanodine-sensitizing Ca2+ store. An increase in [Ca2+]i, caused by activation of the GABAA receptor and opening of VDCCs, is necessary for isoflurane-induced calcium overload of immature rat hippocampal neurons, which may be involved in the mechanism of an isoflurane-induced neurotoxic effect in the developing rodent brain.
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Affiliation(s)
- Y L Zhao
- Department of Anesthesiology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 JieFang Rd., Wuhan, Hubei, 430030, China
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Chang Z, Xiang Q, Yin F. MO-F-211-04: Fast Phase Contrast MR Angiography with Simplified Skipped Phase Encoding and Edge Deghosting with Array Coil Enhancement (S- SPEED-ACE). Med Phys 2011. [DOI: 10.1118/1.3613035] [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: 11/07/2022] Open
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Zhi HY, Hou SW, Li RS, Basir Z, Xiang Q, Szabo A, Chen G. PTPH1 cooperates with vitamin D receptor to stimulate breast cancer growth through their mutual stabilization. Oncogene 2010; 30:1706-15. [PMID: 21119599 PMCID: PMC3072445 DOI: 10.1038/onc.2010.543] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Tyrosine phosphorylation is tightly regulated by protein tyrosine kinases (PTKs) and protein tyrosine phosphatases (PTPs), and plays a critical role in malignant transformation and progression. While PTKs have a well-established role in regulating breast cancer growth, contribution of PTPs remains mostly unknown. Here, we report that the tyrosine phosphatase PTPH1 stimulates breast cancer growth through regulating vitamin D receptor (VDR) expression. PTPH1 was shown to be over-expressed in 49% of primary breast cancer and levels of its protein expression positively correlate with the clinic metastasis, suggesting its oncogenic activity. Indeed, PTPH1 promotes breast cancer growth by a mechanism independent of its phosphatase activity but dependent of its stimulatory effect on the nuclear receptor VDR protein expression and depletion of induced VDR abolishes the PTPH1 oncogenic activity. Additional analyses showed that PTPH1 binds VDR and increases its cytoplasmic accumulation leading to their mutual stabilization and stable expression of a nuclear localization deficient VDR abolishes the growth-inhibitory activity of the receptor independent of 1, 25-dihydroxyvitamin D3 (vitamin D3). These results reveal a new paradigm in which a protein tyrosine phosphatase may stimulate breast cancer growth through increasing cytoplasmic translocation of a nuclear receptor leading to their mutual stabilization.
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Affiliation(s)
- H-Y Zhi
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
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Chang Z, Xiang Q, Shen H, Yin F. SU-GG-I-144: Accelerating Non-Contrast-Enhanced MRA with Inflow Inversion Recovery by Using Skipped Phase Encoding and Edge Deghosting (SPEED). Med Phys 2010. [DOI: 10.1118/1.3468179] [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: 11/07/2022] Open
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Xiang Q, Tan L, Zhao YL, Wang JT, Jin XG, Luo AL. Isoflurane enhances spontaneous Ca(2+) oscillations in developing rat hippocampal neurons in vitro. Acta Anaesthesiol Scand 2009; 53:765-73. [PMID: 19388897 DOI: 10.1111/j.1399-6576.2009.01960.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND During the nervous system development, spontaneous synchronized Ca(2+) oscillations are thought to possess integrative properties because their amplitude and frequency can influence the patterning of neuronal connection, neuronal differentiation, axon outgrowth, and long-distance wiring. Accumulating studies have confirmed that some drugs such as volatile anesthetic isoflurane produced histopathologic changes in the central nervous system in juvenile animal models. Because the hippocampus plays an important role in learning and memory, the present work was designed to characterize the Ca(2+) oscillations regulated by volatile anesthetic isoflurane in primary cultures of developing hippocampal neurons (5-day-cultured). METHODS Primary cultures of rat hippocampal neurons (5-day-cultured) were loaded with the Ca(2+) indicator Fluo-4AM (4 microM) and were studied with a confocal laser microscope. RESULTS Approximately 22% of 5-day-cultured hippocampal neurons exhibited typical Ca(2+) oscillations. These oscillations were dose-dependently enhanced by isoflurane (EC50 0.5 MAC, minimum alveolar concentration) and this effect could be reverted by bicuculline (50 microM), a specific gamma-aminobutyric acid (GABA(A)) receptor antagonist. CONCLUSION Unlike its depressant effect on the Ca(2+) oscillations in adult neurons in previous researches, isoflurane dose-dependently enhanced calcium oscillations in developing hippocampal neurons by activating GABA(A) receptors, a major excitatory receptor in synergy with N-methyl-d-aspartate receptors at the early stages of development. It may be involved in the mechanism of an isoflurane-induced neurotoxic effect in the developing rodent brain.
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Affiliation(s)
- Q Xiang
- Department of Anesthesiology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Xiang Q, Wen L, Liu MH, Zhang Y, Qu JF, Tian J. Endotoxin tolerance of RAW264.7 correlates with p38-dependent up-regulation of scavenger receptor-A. J Int Med Res 2009; 37:491-502. [PMID: 19383244 DOI: 10.1177/147323000903700225] [Citation(s) in RCA: 16] [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: 11/16/2022] Open
Abstract
Pre-exposure to lipopolysaccharide (LPS) leads to hyposensitivity to secondary LPS stimulation, known as endotoxin tolerance. The role of macrophage scavenger receptor-A (SR-A) in endotoxin tolerance is unknown. In this study, LPS was shown to induce SR-A expression in the mouse macrophage cell line, RAW264.7, in dose- and time-dependent manners, which correlated with inflammatory cytokine suppression in RAW264.7 on secondary LPS stimulation. Over-expression of SR-A in RAW264.7 suppressed tumour necrosis factor (TNF)-alpha release and nuclear factor (NF)-kappa B activation, demonstrating the involvement of SR-A in endotoxin tolerance. LPS-pre-treated RAW264.7 cells could bind and internalize more fluorescein isothiocyanate (FITC)-LPS than untreated cells and both the SR-A ligand, fucoidan, and anti-SR-A 2F8 antibodies completely suppressed LPS-induced binding and internalization of FITC-LPS by RAW264.7. LPS-induced SR-A expression on RAW264.7 was completely suppressed by the p38-specific inhibitor, SB203580, but not by inhibition of toll-like receptor 4 (TLR4) signalling with MTS510, demonstrating that p38- but not TLR4-dependent up-regulation of SR-A was involved in endotoxin tolerance through binding and internalization of LPS.
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Affiliation(s)
- Q Xiang
- Department of Critical Care Medicine, Southwest Hospital, Third Military Medical University, Chongqing, China.
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Abstract
Summary As the incidence of genital warts increases, warts arising in the mouth, throat and other sites can occasionally be seen. Condyloma gigantea in genital sites are often reported, but literature on genital warts in transsexuals is rare. We present a case of C. gigantea in a 23-year-old male-to-female transsexual, whose warts arose on the transplanted skin of a neovagina and in the perianal region. We conclude that although C. gigantea can occur in transsexuals, the best way to treat it is not clear.
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Affiliation(s)
- C Yang
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, 69 Meishan Road, Hefei, Anhui 230022, People's Republic of China
| | - S Liu
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, 69 Meishan Road, Hefei, Anhui 230022, People's Republic of China
| | - K Xu
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, 69 Meishan Road, Hefei, Anhui 230022, People's Republic of China
| | - Q Xiang
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, 69 Meishan Road, Hefei, Anhui 230022, People's Republic of China
| | - S Yang
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, 69 Meishan Road, Hefei, Anhui 230022, People's Republic of China
| | - X Zhang
- Institute of Dermatology and Department of Dermatology at No. 1 Hospital, Anhui Medical University, 69 Meishan Road, Hefei, Anhui 230022, People's Republic of China
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