1
|
Zhang M, Li M, Li J, Chai H, Zhu K, Ni Q, Zheng D, Yao W, Liu D. Using temporal dominance of sensations (TDS), multiple-sip TDS, chemical composition evaluation, and microstructural analysis to assess the impact of repeated reheating cycles on chicken soup. Food Chem 2024; 444:138503. [PMID: 38335677 DOI: 10.1016/j.foodchem.2024.138503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/06/2024] [Accepted: 01/16/2024] [Indexed: 02/12/2024]
Abstract
Reheating chicken soup is a common culinary practice in daily life. To investigate the impact of reheating frequency on the sensory quality of chicken soup, temporal dominance of sensations (TDS) and multi-TDS were used to characterize changes in dominant sensory attributes during consumption. Additionally, E-nose and E-tongue were utilized to analyze differences in aroma and taste profiles. The alterations in sensory properties were further elucidated by analyzing variations in amino acids, volatile compounds. The findings revealed that there was no significant disparity between fresh soup and heating. However, saltiness and umami, as the most prominent dominant characteristics, intensified with increasing reheating cycles. This can be attributed to an elevation in certain amino acids that contribute to umami perception. Conversely, a reduction in some aldehydes weakened the flavor associated with fat and meat components. Moreover, enlarged oil droplets with uneven distribution within heated soup may account for the heightened greasiness sensation.
Collapse
Affiliation(s)
- Mingcheng Zhang
- College of Food Science and Technology, Bohai University, Jinzhou, 121013, China; Cuisine Science Key Laboratory of Sichuan Province, Sichuan Tourism University, Chengdu, 610100, China
| | - Ming Li
- College of Food Science and Technology, Bohai University, Jinzhou, 121013, China
| | - Jiali Li
- College of Food Science and Technology, Bohai University, Jinzhou, 121013, China
| | - Huikun Chai
- College of Food Science and Technology, Bohai University, Jinzhou, 121013, China
| | - Kaixian Zhu
- Cuisine Science Key Laboratory of Sichuan Province, Sichuan Tourism University, Chengdu, 610100, China
| | - Qiyuan Ni
- College of Food Science and Technology, Bohai University, Jinzhou, 121013, China
| | - Duoduo Zheng
- College of Food Science and Technology, Bohai University, Jinzhou, 121013, China
| | - Wensheng Yao
- College of Food Science and Technology, Bohai University, Jinzhou, 121013, China
| | - Dengyong Liu
- College of Food Science and Technology, Bohai University, Jinzhou, 121013, China.
| |
Collapse
|
2
|
Chai H, Russ J, Vardhaman S, Lim CH, Zhang Y. A Bilayer Method for Measuring Toughness and Strength of Dental Ceramics. J Dent Res 2024; 103:419-426. [PMID: 38410925 DOI: 10.1177/00220345231225445] [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] [Indexed: 02/28/2024] Open
Abstract
The ever-increasing usage of ceramic materials in restorative dentistry necessitates a simple and effective method to evaluate flexural strength σF and fracture toughness KC. We propose a novel method to determine these quantities using a bilayer specimen composed of a brittle plate adhesively bonded onto a transparent polycarbonate substrate. When this bilayer structure is placed under spherical indentation, tunneling radial cracks initiate and propagate in the lower surface of the brittle layer. The failure analysis is based on previous theoretical relationships, which correlate σF with the indentation force P and layer thickness d, and KC with P and mean length of radial cracks. This work examines the accuracy and limitations of this approach using a wide range of contemporary dental ceramic materials. The effect of layer thickness, indenter radius, load level, and length and number of radial cracks are carefully examined. The accuracy of the predicted σF and KC is similar to those obtained with other concurrent test methods, such as biaxial flexure and 3-point bending (σF), and bending specimens with crack-initiation flaws (KC). The benefits of the present approach include treatment for small and thin plates, elimination of the need to introduce a precrack, and avoidance of dealing with local material nonlinearity effects for the KC measurements. Finally, the bilayer configuration resembles occlusal loading of a ceramic restoration (brittle layer) bonded to a posterior tooth (compliant substrate).
Collapse
Affiliation(s)
- H Chai
- School of Mechanical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
| | - J Russ
- School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - S Vardhaman
- Department of Preventive and Restorative Sciences, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA, USA
- College of Dental Medicine, Columbia University, New York, NY, USA
| | - C H Lim
- Department of Preventive and Restorative Sciences, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA, USA
| | - Y Zhang
- Department of Preventive and Restorative Sciences, University of Pennsylvania, School of Dental Medicine, Philadelphia, PA, USA
| |
Collapse
|
3
|
Chai H, Qing P. [A review of the influence of the 1956 Senior Teacher Training Program on Medical History]. Zhonghua Yi Shi Za Zhi 2022; 52:227-234. [PMID: 36008312 DOI: 10.3760/cma.j.cn112155-20210825-00101] [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: 06/15/2023]
Abstract
The 1956 Senior Teacher Training Program on Medical History, hosted by the Institute of Traditional Chinese Medicine of the Ministry of Health, was the first teacher training program on the history of medicine in higher education in P. R. China. It was designed in the context of "Learning from the Soviet Union" for teaching reformation, "Integrating Western and Traditional Chinese Medicine" and performing the policy of "Blossom of Hundred Flowers and Contention of Hundred Schools of Thought" (by Mao Zedong for encouraging a variety of thinking conflicts) after the birth of the New China. The teaching management for the program was well organised, with a strong staff, and outcomes. A few of the trainees from this program were engaged in teaching and research of the history of medicine, and made outstanding academic achievements and promoted the teaching and research of the history of medicine in Chinese universities in the second half of the 20th century. This program also provides a valuable reference for teacher training programs as well as teaching and research of medical history today.
Collapse
Affiliation(s)
- H Chai
- West China School of Medicine / West China Hospital, Sichuan University, Chengdu 610041, China
| | - P Qing
- West China School of Medicine / West China Hospital, Sichuan University, Chengdu 610041, China
| |
Collapse
|
4
|
Liu Y, Zheng Z, Deng H, Ren Q, Zhou Z, Zhao C, Chai H. SYNTHESIS AND CHARACTERIZATION OF A NEW COMPOUND 4-(2-CHLOROBENZYL)IMIDAZO[1,2-a] QUINAZOLIN-5(4H)-ONE: DFT STUDY, CRYSTAL STRUCTURE, MEP, AND HOMO–LUMO VALUES. J STRUCT CHEM+ 2021. [DOI: 10.1134/s0022476621080163] [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: 11/23/2022]
|
5
|
Yang Z, Huang P, Chen J, Chen Y, Gao T, Chai H, Zhao C. SYNTHESIS, CRYSTAL STRUCTURE, AND DFT STUDY OF 1-(2-BROMOBENZYL)-4-(4,4,5,5-TETRAMETHYL-1,3,2-DIOXABOROLAN-2-YL)-1H-PYRAZOLE. J STRUCT CHEM+ 2021. [DOI: 10.1134/s0022476621060123] [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: 11/23/2022]
|
6
|
Qin Y, Long D, Zhu X, Zhou Z, Chai H, Zhao C. Synthesis, Crystal Structure, and DFT Study of a New Compound 6-(2-Fluorophenyl)-N-(p-Tolyl)Imidazo[1,2-A]Pyridine-2-Carboxamide. J STRUCT CHEM+ 2020. [DOI: 10.1134/s0022476619120072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
7
|
Chai H. THE IMPACT OF UNPAID CAREGIVING ON THE LABOUR MARKET OUTCOMES IN CHINA. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H Chai
- East China Normal University
| |
Collapse
|
8
|
Lee S, Jun H, Joo S, Chai H, Sin N, Almeida D. THE INTERPLAY BETWEEN DAILY POSITIVE EVENTS AND DAILY STRESS SEVERITY ON INFLAMMATION IN ADULTHOOD. Innov Aging 2018. [DOI: 10.1093/geroni/igy031.3709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - H Jun
- . Yonsei University, Seoul, Republic of Korea
| | | | - H Chai
- The Pennsylvania State University
| | - N Sin
- University of British Columbia
| | | |
Collapse
|
9
|
Kang J, Chai H, Sliwinski M, Almeida D. FAMILY SUPPORT MODERATES THE 10-YEAR ASSOCIATION BETWEEN HEART RATE RECOVERY AND COGNITIVE FUNCTION. Innov Aging 2018. [DOI: 10.1093/geroni/igy031.3472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- J Kang
- The Pennsylvania State University
| | - H Chai
- The Pennsylvania State University
| | | | | |
Collapse
|
10
|
Chai H, Hyun J. A DAILY DIARY ANALYSIS OF THE RELATIONSHIP BETWEEN STRESS, EMOTIONAL SUPPORT, AND POSITIVE AFFECT. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H. Chai
- Human Development and Family Studies, The Pennsylvania State University, University Park, Pennsylvania
| | - J. Hyun
- Human Development and Family Studies, The Pennsylvania State University, University Park, Pennsylvania
| |
Collapse
|
11
|
Chai H, Joo S. TIES WITH ADULT CHILDREN AND LONGITUDINAL PARENT-CHILD RELATIONSHIP SATISFACTION OF KOREAN RETIREES. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- H. Chai
- Human Development and Family Studies, The Pennsylvania State University, University Park, Pennsylvania,
| | - S. Joo
- Yonsei University, Seoul, Korea (the Republic of)
| |
Collapse
|
12
|
Chai H, Zhang J, Yang G, Ma Z. An evolution-based DNA-binding residue predictor using a dynamic query-driven learning scheme. Mol Biosyst 2016; 12:3643-3650. [PMID: 27730230 DOI: 10.1039/c6mb00626d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
DNA-binding proteins play a pivotal role in various biological activities. Identification of DNA-binding residues (DBRs) is of great importance for understanding the mechanism of gene regulations and chromatin remodeling. Most traditional computational methods usually construct their predictors on static non-redundant datasets. They excluded many homologous DNA-binding proteins so as to guarantee the generalization capability of their models. However, those ignored samples may potentially provide useful clues when studying protein-DNA interactions, which have not obtained enough attention. In view of this, we propose a novel method, namely DQPred-DBR, to fill the gap of DBR predictions. First, a large-scale extensible sample pool was compiled. Second, evolution-based features in the form of a relative position specific score matrix and covariant evolutionary conservation descriptors were used to encode the feature space. Third, a dynamic query-driven learning scheme was designed to make more use of proteins with known structure and functions. In comparison with a traditional static model, the introduction of dynamic models could obviously improve the prediction performance. Experimental results from the benchmark and independent datasets proved that our DQPred-DBR had promising generalization capability. It was capable of producing decent predictions and outperforms many state-of-the-art methods. For the convenience of academic use, our proposed method was also implemented as a web server at .
Collapse
Affiliation(s)
- H Chai
- School of Computer Science and Information Technology, Northeast Normal University, Changchun, 130117, P. R. China.
| | - J Zhang
- School of Computer Science and Information Technology, Northeast Normal University, Changchun, 130117, P. R. China.
| | - G Yang
- School of Computer Science and Information Technology, Northeast Normal University, Changchun, 130117, P. R. China. and Office of Informatization Management and Planning, Northeast Normal University, Changchun, 130117, P. R. China
| | - Z Ma
- School of Computer Science and Information Technology, Northeast Normal University, Changchun, 130117, P. R. China.
| |
Collapse
|
13
|
Chai H, Huang HH, Jiang HK, Liang Y, Xia LY. Protein-protein interaction network construction for cancer using a new L1/2-penalized Net-SVM model. Genet Mol Res 2016; 15:gmr8794. [PMID: 27525863 DOI: 10.4238/gmr.15038794] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Identifying biomarker genes and characterizing interaction pathways with high-dimensional and low-sample size microarray data is a major challenge in computational biology. In this field, the construction of protein-protein interaction (PPI) networks using disease-related selected genes has garnered much attention. Support vector machines (SVMs) are commonly used to classify patients, and a number of useful tools such as lasso, elastic net, SCAD, or other regularization methods can be combined with SVM models to select genes that are related to a disease. In the current study, we propose a new Net-SVM model that is different from other SVM models as it is combined with L1/2-norm regularization, which has good performance with high-dimensional and low-sample size microarray data for cancer classification, gene selection, and PPI network construction. Both simulation studies and real data experiments demonstrated that our proposed method outperformed other regularization methods such as lasso, SCAD, and elastic net. In conclusion, our model may help to select fewer but more relevant genes, and can be used to construct simple and informative PPI networks that are highly relevant to cancer.
Collapse
Affiliation(s)
- H Chai
- State Key Laboratory of Quality Research in Chinese Medicines & Faculty of Information Technology, Macau University of Science and Technology, Taipa, Macau, China
| | - H H Huang
- State Key Laboratory of Quality Research in Chinese Medicines & Faculty of Information Technology, Macau University of Science and Technology, Taipa, Macau, China
| | - H K Jiang
- State Key Laboratory of Quality Research in Chinese Medicines & Faculty of Information Technology, Macau University of Science and Technology, Taipa, Macau, China
| | - Y Liang
- State Key Laboratory of Quality Research in Chinese Medicines & Faculty of Information Technology, Macau University of Science and Technology, Taipa, Macau, China
| | - L Y Xia
- State Key Laboratory of Quality Research in Chinese Medicines & Faculty of Information Technology, Macau University of Science and Technology, Taipa, Macau, China
| |
Collapse
|
14
|
Ren Y, Chai H, An M, Gao L, Zhou G. Two 3D zinc-bpe frameworks constructed from 2-carboxyl/sulfo-terephthalate: Crystal structures and luminescent properties. RUSS J COORD CHEM+ 2016. [DOI: 10.1134/s1070328416050067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
15
|
Huang BT, Peng Y, Liu W, Zhang C, Chai H, Huang FY, Zuo ZL, Liao YB, Xia TL, Chen M. Nutritional State Predicts All-Cause Death Independent of Comorbidities in Geriatric Patients with Coronary Artery Disease. J Nutr Health Aging 2016; 20:199-204. [PMID: 26812517 DOI: 10.1007/s12603-015-0572-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 02/05/2023]
Abstract
OBJECTIVE To explore whether nutritional risk is associated with poor outcomes independent of complicated clinical status in older patients with coronary artery disease (CAD). DESIGN Cohort study. SETTING Patients referred for coronary angiography in West China Hospital, Sichuan University, China. PARTICIPANTS 1772 patients with angiographic documented CAD whose age was above 65 years. MEASUREMENTS Nutritional state was appraised using geriatric nutritional risk index (GNRI). Nutritional risk was defined as the GNRI below 98. The event rate of all-cause death was observed among patients with nutritional risk and those without. RESULTS During a median follow-up period of 27 months, 224 patients died. Multivariate Cox regression analysis showed that nutritional risk was associated with all-cause death (adjusted hazard ratio 1.99; 95% confidence interval 1.35-2.95; P=0.001). Subgroup analysis verified the association between nutritional risk and death among patients with distinct clinical features, comorbidities, and medication. There was no interaction between nutritional risk and clinical characteristics with regard to all-cause death. CONCLUSION Nutritional state is independently associated with the risk of all-cause death in geriatric patients with CAD. Whether nutritional support in appropriate patients improves clinical outcomes deserves further investigation.
Collapse
Affiliation(s)
- B-T Huang
- Mao Chen, Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Chengdu 610041, Sichuan, China. Telephone: 86-189 8060 2046.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Huang BT, Peng Y, Liu W, Zhang C, Huang FY, Wang PJ, Zuo ZL, Liao YB, Chai H, Huang KS, Huang DJ, Chen M. Increased interventricular septum wall thickness predicts all-cause death in patients with coronary artery disease. Intern Med J 2015; 45:275-83. [PMID: 25510963 DOI: 10.1111/imj.12667] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Accepted: 12/08/2014] [Indexed: 02/05/2023]
Abstract
BACKGROUND There is debate regarding the predictive value of interventricular septum (IVS) wall thickness for adverse events. AIMS The study investigated the association between the severity of thickened IVS and all-cause death in Chinese patients with coronary artery disease (CAD). METHODS A total of 2297 CAD patients verified by angiography was consecutively included. Patients were grouped according to the severity of thickened IVS. Cox regression analysis was conducted to determine the independent prognostic value of thickened IVS for all-cause death. RESULTS During a median follow up of 25 months, 149 patients died. A gradient increase in the risk of death was observed across thickened IVS groups. Compared to patients with normal IVS thickness, the adjusted hazard ratio (HR) was 1.49 (95% confidence interval (CI) 1.00-2.23, P = 0.05) and 2.13 (95% CI 1.29-3.54, P = 0.003) for all-cause death in those with mildly and moderately/severely thickened IVS respectively. For one unit increase in IVS thickness, the risk of all-cause death was elevated by 14% (adjusted HR 1.14, 95% CI 1.05-1.24, P = 0.003). In patients with normal indexed left ventricular mass, thickened IVS was also demonstrated as an independent risk factor for all-cause death. CONCLUSION Thickened IVS can be served as a reliable marker for predicting all-cause death in Chinese patients with CAD, even in those with normal left ventricular mass.
Collapse
Affiliation(s)
- B-T Huang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Huang BT, Peng Y, Liu W, Zhang C, Huang FY, Wang PJ, Zuo ZL, Liao YB, Chai H, Huang KS, Huang DJ, Chen M. Lean mass index, body fat and survival in Chinese patients with coronary artery disease. QJM 2015; 108:641-7. [PMID: 25609701 DOI: 10.1093/qjmed/hcv013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND 'Obesity paradox' was not consistently observed in Asians with coronary artery disease (CAD). AIM The study investigated the association between body composition and outcomes in Chinese patients with CAD. DESIGN Cohort study. METHOD A total of 3280 patients with angiographically validated CAD were consecutively included. Body fat (BF) percentage and lean mass index (LMI) were evaluated using the Clínica Universidad de Navarra-Body Adiposity Estimator. The rate of mortality from any cause was compared across groups classified by the quartiles of LMI. RESULTS During a median period of 24 months, 288 (8.8%) participants died. There was a close association between increasing LMI and reducing mortality rate. However, univariate analyses did not find protective effect of BF on survival. After adjusting for age, sex, diabetes, current smoking, systolic blood pressure, creatinine, white blood cell count, haemoglobin and medication, Cox regression analyses showed that the significant relation between higher quartiles (Q) of LMI and survival benefit (Q4, hazard ratio 0.58 (95% confidence interval: 0.36-0.94) vs. Q3, 0.60 (0.39-0.91) vs. Q2, 0.60 (0.41-0.88) vs. Q1, reference) remained. CONCLUSION Low LMI but not BF predicts all-cause mortality in Chinese patients with CAD.
Collapse
Affiliation(s)
- B-T Huang
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| | - Y Peng
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| | - W Liu
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| | - C Zhang
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| | - F-Y Huang
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| | - P-J Wang
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| | - Z-L Zuo
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| | - Y-B Liao
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| | - H Chai
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| | - K-S Huang
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| | - D-J Huang
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| | - M Chen
- From the Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Street, Wuhou District, Chengdu 610041, China
| |
Collapse
|
18
|
Luo X, Zhao Z, Chai H, Zhang C, Liao Y, Li Q, Peng Y, Liu W, Ren X, Meng Q, Chen C, Chen M, Feng Y, Huang D. Efficacy of transcatheter aortic valve implantation in patients with aortic stenosis and reduced LVEF. A systematic review. Herz 2015; 40 Suppl 2:168-80. [PMID: 25712464 DOI: 10.1007/s00059-014-4193-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 10/20/2014] [Accepted: 11/29/2014] [Indexed: 02/05/2023]
Abstract
BACKGROUND Transcatheter aortic valve implantation (TAVI) is safe and effective for patients with aortic stenosis (AS) who have a high operative risk. However, there is still debate on the effect of TAVI in AS patients with reduced left ventricular ejection fraction (REF). The objective of the review is to clarify the efficacy of TAVI and the impact of REF on the 30-day and midterm mortality in these patients. METHODS Studies on TAVI were searched in PubMed, Embase, and the Cochrane Library databases and were included in this review following predefined criteria. Data were extracted and pooled risk ratios (RR) were synthesized to explore the relationship between REF and 30-day plus midterm mortality. RESULTS Twenty-eight studies comprising 14,099 patients were included in the analysis of the association of REF with the prognosis of patients after TAVI. An average increase in left ventricular ejection fraction of 8-10 % was observed among these patients after TAVI. REF was not related to the 30-day mortality [RR = 1.90, 95 % confidence interval (CI) = 0.80-4.47]; however, it was related to the midterm mortality (RR = 1.49, 95 %CI = 1.14-1.93) of patients undergoing TAVI. Patients with low-flow and low-gradient AS had a higher 30-day mortality (RR = 1.54, 95 %CI = 1.11-2.13) and midterm mortality rate (RR = 1.69, 95 %CI = 1.33-2.14) compared with AS patients without these characteristics. The mortality of TAVI patients was significantly lower than that of those undergoing conservative therapy, and was similar to that of patients undergoing surgical aortic valve replacement. CONCLUSION REF was not associated with 30-day mortality, but it was associated with the midterm mortality of TAVI patients. Patients with REF could benefit from TAVI compared with conservative therapy.
Collapse
Affiliation(s)
- X Luo
- Department of Cardiology, West China Hospital of Sichuan University, No.37 Guo Xue Xiang of Wuhou District, 610041, Chengdu, Sichuan, P.R. China
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Chai H, Chen WZ, Zhu J, Xu Y, Lou L, Yang T, He W, Wang W. Processing of facial expressions of emotions in healthy volunteers: an exploration with event-related potentials and personality traits. Neurophysiol Clin 2012. [PMID: 23181967 DOI: 10.1016/j.neucli.2012.04.087] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
AIMS OF THE STUDY Previous studies have shown that event-related potentials (ERPs) are modulated by anxiety or psychopathic personality traits. Therefore, we hypothesized that the automatic processing of facial expressions of emotions (FEE) is also correlated with related disordered personality traits. METHODS Thirty-seven healthy volunteers underwent both an "oddball" ERP recording to facial expressions of Anger, Happiness, Sadness, and Neutral, and a test of the Dimensional Assessment of Personality Pathology (DAPP). RESULTS Mean reaction time was longer in response to anger than to other facial expressions. Facial expressions of Anger, Happiness and Sadness did not affect N1 (N170). By contrast, Happiness elicited a delayed P2, Anger elicited both a smaller N2 and a delayed P3b, and both Happiness and Anger elicited a P3b of higher amplitude. In addition, P3a latencies to Happiness were negatively correlated with DAPP Identity problems, and P3b latencies to Happiness were negatively correlated with DAPP Stimulus seeking, Callousness, Passive aggressivity, and Narcissism. CONCLUSION Our study demonstrates that Anger implicitly captures attentional resources, and Happiness triggers more facilitated processing in individuals with dissocial traits.
Collapse
Affiliation(s)
- H Chai
- Department of Clinical Psychology and Psychiatry, Zhejiang University School of Medicine, Yuhangtang Road 866, Hangzhou, Zhejiang 310058, China
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Abstract
A serious drawback of veneering porcelains is a pronounced susceptibility to chipping. Glass-infiltrated dense zirconia structures can now be produced with esthetic quality, making them an attractive alternative. In this study, we examined the hypothesis that such infiltrated structures are much more chip-resistant than conventional porcelains, and at least as chip-resistant as non-infiltrated zirconia. A sharp indenter was used to produce chips in flat and anatomically correct glass-infiltrated zirconia crown materials, and critical loads were measured as a function of distance from the specimen edge (flat) or side wall (crown). Control data were obtained on zirconia specimens without infiltration and on crowns veneered with porcelains. The results confirmed that the resistance to chipping in graded zirconia is more than 4 times higher than that of porcelain-veneered zirconia and is at least as high as that of non-veneered zirconia.
Collapse
Affiliation(s)
- Y Zhang
- New York University College of Dentistry, Department of Biomaterials and Biomimetics, 345 East 24th Street, Room 813C, New York, NY 10010, USA.
| | | | | | | |
Collapse
|
21
|
Abstract
One failure mode of all-ceramic restorations is radial cracking at the cementation surface, from occlusally induced flexure of the stiffer ceramic layer(s) on the softer dentin underlayer. We hypothesize that such failure may be substantially mitigated by an appropriate grading of elastic modulus through the ceramic thickness. In this study, we fabricated graded structures by infiltrating glass into zirconia plates, with resulting diminished modulus in the outer surfaces. The plates were then bonded to a polymeric base and subjected to flexure by contact loading until fracture. Comparison of infiltrated specimens with non-infiltrated controls showed a significant increase in the fracture loads, by a factor of nearly 2. Finite element analysis revealed the cause of increase in the load-bearing capacity to be diminished tensile stresses within the lower-modulus graded zone, corresponding to an increase in material strength. The results confirmed that suitably graded structures can be highly beneficial in the design of next-generation all-ceramic restorations.
Collapse
Affiliation(s)
- Y Zhang
- Department of Biomaterials and Biomimetics, New York University College of Dentistry, 345 East 24th Street, New York, NY 10010, USA.
| | | | | |
Collapse
|
22
|
Ding Q, Chai H, Mahmood N, Zhou W. Resistin Promotes Vascular Smooth Muscle Cell Migration via Matrix Metalloproteinases. J Surg Res 2010. [DOI: 10.1016/j.jss.2009.11.356] [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: 10/19/2022]
|
23
|
Chen C, Chai H, Wang X, Lin PH, Yao Q. Corrigendum to: Chlamydia heat shock protein 60 decreases expression of endothelial nitric oxide synthase in human and porcine coronary artery endothelial cells. Cardiovasc Res 2009. [DOI: 10.1093/cvr/cvp316] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
24
|
Vilariño-Güell C, Chai H, Keeling BH, Young JE, Rajput A, Lynch T, Aasly JO, Uitti RJ, Wszolek ZK, Farrer MJ, Lin SC. MEIS1 p.R272H in familial restless legs syndrome. Neurology 2009; 73:243-5. [PMID: 19620614 DOI: 10.1212/wnl.0b013e3181ae7c79] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- C Vilariño-Güell
- Division of Neurogenetics, Department of Neuroscience, Mayo Clinic College of Medicine, Jacksonville, FL 32224, USA.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Abstract
The structural integrity of teeth under stress is vital to functional longevity. We tested the hypothesis that this integrity is limited by fracture of the enamel. Experiments were conducted on molar teeth, with a metal rod loaded onto individual cusps. Fracture during testing was tracked with a video camera. Two longitudinal modes of cracking were observed: median cracking from the contact zone, and margin cracking along side walls. Median cracks initiated from plastic damage at the contact site, at first growing slowly and then accelerating to the tooth margin. Margin cracks appeared to originate from the cemento-enamel junction, and traversed the tooth wall adjacent to the loaded cusp from the gingival to the occlusal surface. All cracks remained confined within the enamel shell up to about 550 N. At higher loads, additional crack modes—such as enamel chipping and delamination—began to manifest themselves, leading to more comprehensive failure of the tooth structure.
Collapse
Affiliation(s)
- J.J.-.W. Lee
- Ceramics Division, National Institute of Standards and Technology,
Gaithersburg, MD 20899-8520, USA
- School of Nano and Advanced Materials Engineering, Changwon National
University, Changwon, Kyung-Nam, Korea
- School of Mechanical Engineering, Faculty of Engineering, Tel Aviv
University, Tel Aviv, Israel
- Department of Anthropology, George Washington University, Washington,
DC 20052, USA; and
- New York University College of Dentistry, New York, NY 10010,
USA
| | - J.-Y. Kwon
- Ceramics Division, National Institute of Standards and Technology,
Gaithersburg, MD 20899-8520, USA
- School of Nano and Advanced Materials Engineering, Changwon National
University, Changwon, Kyung-Nam, Korea
- School of Mechanical Engineering, Faculty of Engineering, Tel Aviv
University, Tel Aviv, Israel
- Department of Anthropology, George Washington University, Washington,
DC 20052, USA; and
- New York University College of Dentistry, New York, NY 10010,
USA
| | - H. Chai
- Ceramics Division, National Institute of Standards and Technology,
Gaithersburg, MD 20899-8520, USA
- School of Nano and Advanced Materials Engineering, Changwon National
University, Changwon, Kyung-Nam, Korea
- School of Mechanical Engineering, Faculty of Engineering, Tel Aviv
University, Tel Aviv, Israel
- Department of Anthropology, George Washington University, Washington,
DC 20052, USA; and
- New York University College of Dentistry, New York, NY 10010,
USA
| | - P.W. Lucas
- Ceramics Division, National Institute of Standards and Technology,
Gaithersburg, MD 20899-8520, USA
- School of Nano and Advanced Materials Engineering, Changwon National
University, Changwon, Kyung-Nam, Korea
- School of Mechanical Engineering, Faculty of Engineering, Tel Aviv
University, Tel Aviv, Israel
- Department of Anthropology, George Washington University, Washington,
DC 20052, USA; and
- New York University College of Dentistry, New York, NY 10010,
USA
| | - V.P. Thompson
- Ceramics Division, National Institute of Standards and Technology,
Gaithersburg, MD 20899-8520, USA
- School of Nano and Advanced Materials Engineering, Changwon National
University, Changwon, Kyung-Nam, Korea
- School of Mechanical Engineering, Faculty of Engineering, Tel Aviv
University, Tel Aviv, Israel
- Department of Anthropology, George Washington University, Washington,
DC 20052, USA; and
- New York University College of Dentistry, New York, NY 10010,
USA
| | - B.R. Lawn
- Ceramics Division, National Institute of Standards and Technology,
Gaithersburg, MD 20899-8520, USA
- School of Nano and Advanced Materials Engineering, Changwon National
University, Changwon, Kyung-Nam, Korea
- School of Mechanical Engineering, Faculty of Engineering, Tel Aviv
University, Tel Aviv, Israel
- Department of Anthropology, George Washington University, Washington,
DC 20052, USA; and
- New York University College of Dentistry, New York, NY 10010,
USA
| |
Collapse
|
26
|
Chai H, Aghaie K, Zhou W. 119. Soluble CD40 Ligand Induces Human Coronary Artery Smooth Muscle Cells Proliferation and Migration. J Surg Res 2009. [DOI: 10.1016/j.jss.2008.11.147] [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]
|
27
|
Bechara C, Chai H, Lin P, Lumsden A, Yao Q, Chen C. P289. J Surg Res 2007. [DOI: 10.1016/j.jss.2006.12.476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
28
|
Jahanyar J, Youker K, Loebe M, Chai H, Assad-Kottner C, Torre-Amione G, Noon G. 384: Stem cell factor mRNA expression during mechanical circulatory support with left ventricular assist devices correlates with cardiac mast cell populations in the failing human heart. J Heart Lung Transplant 2007. [DOI: 10.1016/j.healun.2006.11.405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
29
|
Wang X, Yan S, Chai H, Lin P, Lumsden A, Yao Q, Chen C. 137. J Surg Res 2007. [DOI: 10.1016/j.jss.2006.12.150] [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: 10/23/2022]
|
30
|
Chai H, Henao E, Wang X, Lin P, Lumsden A, Yao Q, Chen C. P145. J Surg Res 2007. [DOI: 10.1016/j.jss.2006.12.376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
31
|
Ochoa L, Chai H, Hedayati N, Lin P, Lumsden A, Yao Q, Chen C. P128. J Surg Res 2007. [DOI: 10.1016/j.jss.2006.12.359] [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: 11/29/2022]
|
32
|
Wang X, Chai H, Li M, Lin P, Lumsden A, Yao Q, Chen C. P140. J Surg Res 2007. [DOI: 10.1016/j.jss.2006.12.371] [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: 11/26/2022]
|
33
|
Teng CC, Chai H, Lai DM, Wang SF. Cervicocephalic kinesthetic sensibility in young and middle-aged adults with or without a history of mild neck pain. ACTA ACUST UNITED AC 2006; 12:22-8. [PMID: 16777468 DOI: 10.1016/j.math.2006.02.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2004] [Revised: 01/16/2006] [Accepted: 02/03/2006] [Indexed: 01/08/2023]
Abstract
Previous research has shown that there is no significant relationship between the degree of structural degeneration of the cervical spine and neck pain. We therefore sought to investigate the potential role of sensory dysfunction in chronic neck pain. Cervicocephalic kinesthetic sensibility, expressed by how accurately an individual can reposition the head, was studied in three groups of individuals, a control group of 20 asymptomatic young adults and two groups of middle-aged adults (20 subjects in each group) with or without a history of mild neck pain. An ultrasound-based three-dimensional coordinate measuring system was used to measure the position of the head and to test the accuracy of repositioning. Constant error (indicating that the subject overshot or undershot the intended position) and root mean square errors (representing total errors of accuracy and variability) were measured during repositioning of the head to the neutral head position (Head-to-NHP) and repositioning of the head to the target (Head-to-Target) in three cardinal planes (sagittal, transverse, and frontal). Analysis of covariance (ANCOVA) was used to test the group effect, with age used as a covariate. The constant errors during repositioning from a flexed position and from an extended position to the NHP were significantly greater in the middle-aged subjects than in the control group (beta=0.30 and beta=0.60, respectively; P<0.05 for both). In addition, the root mean square errors during repositioning from a flexed or extended position to the NHP were greater in the middle-aged subjects than in the control group (beta=0.27 and beta=0.49, respectively; P<0.05 for both). The root mean square errors also increased during Head-to-Target in left rotation (beta=0.24;P<0.05), but there was no difference in the constant errors or root mean square errors during Head-to-NHP repositioning from other target positions (P>0.05). The results indicate that, after controlling for age as a covariate, there was no group effect. Thus, age appears to have a profound effect on an individual's ability to accurately reposition the head toward the neutral position in the sagittal plane and repositioning the head toward left rotation. A history of mild chronic neck pain alone had no significant effect on cervicocephalic kinesthetic sensibility.
Collapse
Affiliation(s)
- C-C Teng
- Graduate Institute and School of Physical Therapy, College of Medicine, National Taiwan University, No. 17, Xu-Zhou Road, Zhong Zheng District, Taipei, 100, Taiwan, ROC
| | | | | | | |
Collapse
|
34
|
Zhou W, Chai H, Lin P, Lumsden A, Yao Q, Chen C. Ginkgolide a attenuates homocysteine induced endothelial dysfunction in porcine coronary arteries. J Surg Res 2006. [DOI: 10.1016/j.jss.2005.11.450] [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: 10/25/2022]
|
35
|
Wang H, Li M, Yan S, Chai H, Yao Q, Chen C. Shear stress regulates expression of TGF beta and its signal transduction molecules in mouse embryo mesenchymal progenitor cells. J Surg Res 2006. [DOI: 10.1016/j.jss.2005.11.443] [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: 10/25/2022]
|
36
|
Wang X, Yan S, Chai H, Wang H, Yao Q, Chen C. C-reactive protein inhibits cholesterol efflux from human macrophage-derived foam cells. J Surg Res 2006. [DOI: 10.1016/j.jss.2005.11.120] [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: 10/25/2022]
|
37
|
Henao E, Chai H, Lin P, Lumsden A, Yao Q, Chen C. Serum amyloid a impairs endothelium-dependent vasorelaxation and increased superoxide anion production in porcine coronary arteries. J Surg Res 2006. [DOI: 10.1016/j.jss.2005.11.208] [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: 11/29/2022]
|
38
|
Chai H, Yan S, Wang H, Yang H, Zhang R, Li M, Wang X, Yao Q, Chen C. Soluble CD40 ligand induces endothelial dysfunction in human coronary artery endothelial cells and porcine coronary arteries. J Surg Res 2006. [DOI: 10.1016/j.jss.2005.11.125] [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: 11/26/2022]
|
39
|
Chen CL, Wang SF, Wang CL, Shau YW, Chai H. The effect of taping on the shock attenuation capacity of the heel pad in patients with plantar heel pain. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)85248-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
40
|
Li M, Yang H, Chai H, Fisher W, Wang X, Brunicardi C, Yao Q, Chen C. Expression and role of VEGF and neuropilins in pancreatic cancer. J Surg Res 2004. [DOI: 10.1016/j.jss.2004.07.134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
41
|
Yan S, Wang H, Nan B, Chai H, Yao Q, Chen C, Chen C. HIV protease inhibitor ritonavir increases monolayer permeability of endothelial cells. J Surg Res 2004. [DOI: 10.1016/j.jss.2004.07.176] [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: 11/29/2022]
|
42
|
Wang H, Yan S, Li M, Chai H, Yang H, Yao Q, Chen C, Chen C. Shear stress induces endothelial differentiation from mouse embryo mesenchymal progenitor cells. J Surg Res 2004. [DOI: 10.1016/j.jss.2004.07.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
43
|
Cevallos M, Yan S, Li M, Chai H, Yang H, Yao Q, Chen C. Cyclic strain induces expression of specific smooth muscle cell markers in human endothelial cells. J Surg Res 2004. [DOI: 10.1016/j.jss.2004.07.178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
44
|
Li M, Chai H, Wang H, Yao Q, Chen C, Fisher W. Somatostatin receptors are lost early in the process of pancreatic carcinogenesis. J Surg Res 2004. [DOI: 10.1016/j.jss.2004.07.139] [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: 10/26/2022]
|
45
|
Safaya R, Chai H, Lin P, Lumsden A, Yao Q, Chen C. Effect of lysophosphatidylcholine on vasomotor functions of porcine arteries. J Surg Res 2004. [DOI: 10.1016/j.jss.2004.07.119] [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: 10/26/2022]
|
46
|
Zhou W, Chai H, Lin P, Lumsden A, Chen C, Chen C. Ginsenoside Rb1 blocks Homocysteine-induced endothelial dysfunction. J Surg Res 2004. [DOI: 10.1016/j.jss.2004.07.074] [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: 11/16/2022]
|
47
|
Nan B, Yan S, Chai H, Lin P, Yao Q, Chen C. TNF-α decreases expression of Thrombomudulin and endothelial protein C receptor in human endothelial cells. J Surg Res 2004. [DOI: 10.1016/j.jss.2004.07.077] [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: 11/16/2022]
|
48
|
Abstract
Diosquinone [1], a naphthoquinone epoxide previously isolated from the root bark of Diospyros mespiliformis (Hostch) and D. tricolor [Ebenaceae] is been assessed for cytotoxicity activity against ten cancer cell lines by standard NIH method. The ethno-pharmacological claim of this plant and the previously observed good antibacterial activity of this compound among the others isolated from this plant suggest its probable cytotoxicity activity. Diosquinone was observed to be very active against most of the cancer cell lines. It shows very good activity against all the cell lines tested with ED50 value ranging between 0.18 microg/ml. against Human Glioblastoma (U373) to 4.5 microg/ml. against Hormone dependent human prostrate cancer( LNCaP).
Collapse
Affiliation(s)
- B A Adeniyi
- Department of Pharmaceutical Microbiology and Clinical Pharmacy, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | | | | | | |
Collapse
|
49
|
Seo EK, Kim NC, Mi Q, Chai H, Wall ME, Wani MC, Navarro HA, Burgess JP, Graham JG, Cabieses F, Tan GT, Farnsworth NR, Pezzuto JM, Kinghorn AD. Macharistol, a new cytotoxic cinnamylphenol from the stems of Machaerium aristulatum. J Nat Prod 2001; 64:1483-1485. [PMID: 11720542 DOI: 10.1021/np0103158] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new cinnamylphenol, macharistol (1), along with a known pterocarpan, (+)-medicarpin (2), were isolated as cytotoxic constituents from the stems of Machaerium aristulatum. In addition, a known pterocarpan, (+)-maackiain (3), and a known isoflavone, formononetin (4), were identified as inactive constituents. Compound 1 was evaluated in the in vivo hollow fiber assay with KB, Col-2, and hTERT-RPE1 cells and found to be inactive at the highest dose (25 mg/kg body weight) tested.
Collapse
Affiliation(s)
- E K Seo
- Chemistry and Life Sciences, Research Triangle Institute, P.O. Box 12194, Research Triangle Park, North Carolina 27709, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Mi Q, Cui B, Silva GL, Lantvit D, Lim E, Chai H, You M, Hollingshead MG, Mayo JG, Kinghorn AD, Pezzuto JM. Pervilleine A, a novel tropane alkaloid that reverses the multidrug-resistance phenotype. Cancer Res 2001; 61:4030-7. [PMID: 11358822] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
P-Glycoprotein-mediated drug efflux can yield a multidrug-resistance (MDR) phenotype that is associated with a poor response to cancer chemotherapy. Pervilleine A, a novel tropane alkaloid obtained from a chloroform extract of Erythroxylum pervillei as the result of bioactivity-guided fractionation, was found to restore the vinblastine sensitivity of cultured multidrug-resistant KB-V1 and CEM/VLB(100) cells, with IC(50) values of 0.36 and 0.02 microM, respectively. Similarly, the chemosensitivity of KB-8-5 cells to colchicine was restored with an IC(50) value of 0.61 microM. The mechanism of this response was evaluated with a number of model systems. First, incubation of multidrug-resistant KB-V1 and CEM/VLB(100) cells with up to 45 microM pervilleine A for 72 h did not significantly affect either the transcription of MDR1, as revealed by reverse transcriptional-PCR-based analysis of MDR1 mRNA, or levels of P-glycoprotein, as shown by Western blots. ATP-dependent binding of [(3)H]vinblastine observed with isolated multidrug-resistant KB-V1 cell membrane vesicles was inhibited by pervilleine A in a dose-dependent manner, and kinetic analysis indicted competitive inhibition with respect to vinblastine binding with a K(i) of 7.3 microM. Consistent with this effect, intracellular accumulation of [(3)H]vinblastine was increased from 0.18 pmol [(3)H]vinblastine/50 x 10(4) cells to approximately 5 pmol [(3)H]vinblastine/50 x 10(4) cells in the presence of 40 microM pervilleine A. To explore the potential relevance of these responses, KB-V1 or KB-8-5 cells were placed in hollow fibers and implanted into NCr nu/nu mice. Cell growth was not significantly inhibited when vinblastine or pervilleine A were administered as single agents, but when used in combination, inhibition of up to 75% was observed. Equimolar doses of verapamil were less effective. These data suggest that pervilleine A is an effective inhibitor of P-glycoprotein and should be further evaluated for clinical utility.
Collapse
MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/antagonists & inhibitors
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Antineoplastic Agents, Phytogenic/pharmacokinetics
- Antineoplastic Agents, Phytogenic/pharmacology
- Blotting, Western
- Cell Division/drug effects
- Colchicine/pharmacology
- Drug Resistance, Multiple
- Drug Screening Assays, Antitumor
- Genes, MDR/drug effects
- Humans
- Inhibitory Concentration 50
- KB Cells/drug effects
- Phenotype
- RNA, Messenger/biosynthesis
- RNA, Messenger/genetics
- Reverse Transcriptase Polymerase Chain Reaction
- Tropanes/pharmacology
- Tumor Cells, Cultured/drug effects
- Verapamil/pharmacology
- Vinblastine/pharmacokinetics
- Vinblastine/pharmacology
Collapse
Affiliation(s)
- Q Mi
- Program for Collaborative Research in the Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, 833 South Wood St., Chicago, IL 60612, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|