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Shang X, Kong LH, Xiao XP, Wan R, Wang J, Wu HW, Chen XY, Shou HF, Fei J, Zhou JW, Lang JH, Li L. [A multicenter study on the accuracy of PAX1/JAM3 dual genes methylation testing for screening cervical cancer]. Zhonghua Yi Xue Za Zhi 2024; 104:1852-1859. [PMID: 38782754 DOI: 10.3760/cma.j.cn12137-20231004-00630] [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] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Objective: To explore the value of cervical cytologic DNA methylation for screening cervical cancer. Methods: This study was a prospective multicenter study conducted from May to October 2022 in Peking Union Medical College Hospital, Zhejiang Provincial People's Hospital, and the Second Affiliated Hospital of Zhejiang University School of Medicine. Women who accepted opportunistic cervical cancer screening in gynecological outpatient clinics were subjected to liquid-based thin-layer cytology testing (TCT), high-risk human papillomavirus (hrHPV) DNA testing and PAX1/JAM3 dual-genes methylation testing (PAX1m/JAM3m). Colposcopy evaluation and biopsy were offered to women according to current guidelines. The accuracies of various testing methods and their combinations were compared based on histological diagnosis. Results: A total of 1 184 samples diagnosed by histopathology were included in this study, consisting of 541 cases (45.7%) of benign cervical tissue or chronic cervicitis, 273 (23.1%) of cervical intraepithelial neoplasia (CIN) 1, 168 (14.2%) of CIN2, 140 (11.8%) of CIN3, and 62 (5.2%) of cervical cancer. The sensitivity and specificity of PAX1m/JAM3m testing for detecting CIN2 or more severe lesions (CIN2+) were 74.1% and 95.9%, respectively. The sensitivity and specificity of PAX1m/JAM3m testing for detecting CIN3+were 87.6% and 86.8%, respectively. Receiver operating characteristic curve analysis showed that, for detecting CIN3+, the area under curve of PAX1m/JAM3m testing (0.872, 95%CI: 0.847-0.897) was significantly superior to TCT testing (0.580, 95%CI: 0.551-0.610) or hrHPV testing (0.503, 95%CI: 0.479-0.515) (all P values<0.05). Conclusions: The PAX1m/JAM3m test in cervical exfoliated cells has excellent accuracy for the diagnosis of both CIN2+and CIN3+, which is superior to traditional screening protocols and screening strategies.
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Affiliation(s)
- X Shang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing 100730, China
| | - L H Kong
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing 100730, China
| | - X P Xiao
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing 100730, China
| | - R Wan
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing 100730, China
| | - J Wang
- Department of Pathology, Peking Union Medical College Hospital, Beijing 100730, China
| | - H W Wu
- Department of Pathology, Peking Union Medical College Hospital, Beijing 100730, China
| | - X Y Chen
- Department of Gynecology, Zhejiang Provincial People's Hospital, Hangzhou 310000, China
| | - H F Shou
- Department of Gynecology, Zhejiang Provincial People's Hospital, Hangzhou 310000, China
| | - J Fei
- Department of Gynecology, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310003, China
| | - J W Zhou
- Department of Gynecology, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310003, China
| | - J H Lang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing 100730, China
| | - L Li
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing 100730, China
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Chi TC, Yang PC, Hung SK, Wu HW, Wang HC, Liu HK, Liu LW, Chou HH. Synthesis of Multisubstituted 1,2,3-Triazoles: Regioselective Formation and Reaction Mechanism. J Org Chem 2024; 89:5401-5408. [PMID: 38546539 DOI: 10.1021/acs.joc.3c02836] [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: 04/20/2024]
Abstract
A synthetically useful approach to functionalized triazoles is described via the reaction of β-carbonyl phosphonates and azides. 1,4- and 1,5-disubstituted and 1,4,5-trisubstituted triazoles can be regio- and chemoselectively accessed under mild conditions in good to excellent yields (31 examples, up to 99%). A mechanism is proposed that rationalizes the avoidance of the 4-phosphonate byproducts, which is aligned with crystallographic and experimental evidence.
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Affiliation(s)
- Tzu-Ching Chi
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Po-Chun Yang
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Shao-Kung Hung
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Hui-Wen Wu
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Hong-Chi Wang
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Hsin-Kuan Liu
- Core Facility Center, National Cheng Kung University, Tainan 701, Taiwan
| | - Li-Wen Liu
- National Tainan First Senior High School, Tainan 701, Taiwan
| | - Ho-Hsuan Chou
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
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Chang HY, Wu HW, Hung CS, Chen YH, Huang CC, Yang LT, Hwang ST, Yu JY, Lee JK, Ho YL. Costs and Cardiovascular Benefits of a Fourth-Generation Synchronous Telehealth Program on Mortality and Cardiovascular Outcomes for Patients With Atrial Fibrillation: Retrospective Cohort Study. J Med Internet Res 2024; 26:e48748. [PMID: 38190237 PMCID: PMC10804254 DOI: 10.2196/48748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/20/2023] [Accepted: 10/11/2023] [Indexed: 01/09/2024] Open
Abstract
BACKGROUND The prevalence of atrial fibrillation (AF) continues to increase in modern aging society. Patients with AF are at high risk for multiple adverse cardiovascular events, including heart failure, stroke, and mortality. Improved medical care is needed for patients with AF to enhance their quality of life and limit their medical resource utilization. With advances in the internet and technology, telehealth programs are now widely used in medical care. A fourth-generation telehealth program offers synchronous and continuous medical attention in response to physiological parameters measured at home. Although we have previously shown the benefits of this telehealth program for some patients with a high risk of cardiovascular disease, its benefits for patients with AF remains uncertain. OBJECTIVE This study aims to investigate the benefits of participating in a fourth-generation telehealth program for patients with AF in relation to cardiovascular outcomes. METHODS This was a retrospective cohort study. We retrospectively searched the medical records database of a tertiary medical center in Northern Taiwan between January 2007 and December 2017. We screened 5062 patients with cardiovascular disease and enrolled 537 patients with AF, of which 279 participated in the telehealth program and 258 did not. Bias was reduced using the inverse probability of treatment weighting adjustment based on the propensity score. Outcomes were collected and analyzed, including all-cause readmission, admission for heart failure, acute coronary syndrome, ischemic stroke, systemic embolism, bleeding events, all-cause mortality, and cardiovascular death within the follow-up period. Total medical expenses and medical costs in different departments were also compared. Subgroup analyses were conducted on ischemic stroke stratified by several subgroup variables. RESULTS The mean follow-up period was 3.0 (SD 1.7) years for the telehealth group and 3.4 (SD 1.9) years for the control group. After inverse probability of treatment weighting adjustment, the patients in the telehealth program had significantly fewer ischemic strokes (2.0 vs 4.5 events per 100 person-years; subdistribution hazard ratio [SHR] 0.45, 95% CI 0.22-0.92) and cardiovascular deaths (2.5 vs 5.9 events per 100 person-years; SHR 0.43, 95% CI 0.18-0.99) at the follow-up. The telehealth program particularly benefited patients comorbid with vascular disease (SHR 0.11, 95% CI 0.02-0.53 vs SHR 1.16, 95% CI 0.44-3.09; P=.01 for interaction). The total medical expenses during follow-up were similar in the telehealth and control groups. CONCLUSIONS This study demonstrated the benefits of participating in the fourth-generation telehealth program for patients with AF by significantly reducing their ischemic stroke risk while spending the same amount on medical expenses.
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Affiliation(s)
- Hao-Yun Chang
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hui-Wen Wu
- Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-Sheng Hung
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ying-Hsien Chen
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ching-Chang Huang
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Li-Tan Yang
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Shin-Tsyr Hwang
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan
| | - Jiun-Yu Yu
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Business Administration, College of Management, National Taiwan University, Taipei, Taiwan
| | - Jen-Kuang Lee
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Laboratory Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yi-Lwun Ho
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
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Yang LT, Lee JK, Tsai CM, Chen YH, Huang CC, Wu HW, Su CH, Lee CC, Hung CS, Ho YL. Correction: Effect of Telehealth Services on Mitral and Tricuspid Regurgitation Progression: Retrospective Study. J Med Internet Res 2023; 25:e53232. [PMID: 37793150 PMCID: PMC10585434 DOI: 10.2196/53232] [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] [Received: 09/29/2023] [Accepted: 09/29/2023] [Indexed: 10/06/2023] Open
Abstract
[This corrects the article DOI: 10.2196/47947.].
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Affiliation(s)
- Li-Tan Yang
- Division of Cardiology, Department of Internal MedicineNational Taiwan University HospitalTaipeiTaiwan
- Department of Internal MedicineCollege of MedicineNational Taiwan UniversityTaipeiTaiwan
- Telehealth CenterNational Taiwan University HospitalTaipeiTaiwan
| | - Jen-Kuang Lee
- Division of Cardiology, Department of Internal MedicineNational Taiwan University HospitalTaipeiTaiwan
- Department of Internal MedicineCollege of MedicineNational Taiwan UniversityTaipeiTaiwan
- Telehealth CenterNational Taiwan University HospitalTaipeiTaiwan
| | - Chieh-Mei Tsai
- Division of Cardiology, Department of Internal MedicineNational Taiwan University HospitalTaipeiTaiwan
| | - Ying-Hsien Chen
- Division of Cardiology, Department of Internal MedicineNational Taiwan University HospitalTaipeiTaiwan
- Department of Internal MedicineCollege of MedicineNational Taiwan UniversityTaipeiTaiwan
- Telehealth CenterNational Taiwan University HospitalTaipeiTaiwan
| | - Ching-Chang Huang
- Division of Cardiology, Department of Internal MedicineNational Taiwan University HospitalTaipeiTaiwan
- Department of Internal MedicineCollege of MedicineNational Taiwan UniversityTaipeiTaiwan
- Telehealth CenterNational Taiwan University HospitalTaipeiTaiwan
| | - Hui-Wen Wu
- Telehealth CenterNational Taiwan University HospitalTaipeiTaiwan
| | - Chin-Hua Su
- Department of Emergency MedicineNational Taiwan University HospitalTaipeiTaiwan
| | - Chien-Chang Lee
- Department of Emergency MedicineNational Taiwan University HospitalTaipeiTaiwan
| | - Chi-Sheng Hung
- Department of Internal MedicineCollege of MedicineNational Taiwan UniversityTaipeiTaiwan
- Telehealth CenterNational Taiwan University HospitalTaipeiTaiwan
- Division of CardiologyDepartment of Internal MedicineNational Taiwan University HospitalTaipeiTaiwan
| | - Yi-Lwun Ho
- Division of Cardiology, Department of Internal MedicineNational Taiwan University HospitalTaipeiTaiwan
- Department of Internal MedicineCollege of MedicineNational Taiwan UniversityTaipeiTaiwan
- Telehealth CenterNational Taiwan University HospitalTaipeiTaiwan
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Yang LT, Lee JK, Tsai CM, Chen YH, Huang CC, Wu HW, Su CH, Lee CC, Hung CS, Ho YL. Effect of Telehealth Services on Mitral and Tricuspid Regurgitation Progression: Retrospective Study. J Med Internet Res 2023; 25:e47947. [PMID: 37751276 PMCID: PMC10565617 DOI: 10.2196/47947] [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: 04/06/2023] [Revised: 06/02/2023] [Accepted: 08/01/2023] [Indexed: 09/27/2023] Open
Abstract
BACKGROUND Mitral regurgitation (MR) and tricuspid regurgitation (TR) are common cardiac conditions with high mortality risks, which can be improved through early intervention. Telehealth services, which allow for remote monitoring of patient conditions, have been proven to improve the health management of chronic diseases, but the effects on MR and TR progression are unknown. OBJECTIVE This study aimed to explore whether patients receiving telehealth services have less MR and TR progression compared with a control group. We also aimed to identify the determinants of MR and TR progression. METHODS This single-center retrospective study conducted at the National Taiwan University Hospital compared MR and TR progression (defined as either progression to moderate or greater MR and TR or MR and TR progression by ≥2 grades during the study period) between the telehealth and control groups. Patients had a minimum of 2 transthoracic echocardiograms at least 6 months apart; baseline mild-moderate MR and TR or lower; and no prior surgeries on the mitral or tricuspid valve. Telehealth patients were defined as those who received telehealth services for at least 28 days within 3 months of baseline. Basic demographics, baseline blood pressure measurements, prescribed medication, and Charlson Comorbidity Index components were obtained for all patients. RESULTS A total of 1081 patients (n=226 in the telehealth group and n=855 in the control group) were included in the study analyses. The telehealth group showed significantly lower baseline systolic blood pressure (P<.001), higher Charlson Comorbidity Index (P=.02), higher prevalence of prior myocardial infarction (P=.01) and heart failure (P<.001), higher beta-blocker (P=.03) and diuretic (P=.04) use, and lower nitrate use (P=.04). Both groups showed similar cardiac remodeling conditions at baseline. Telehealth was found to be neutral for both MR (hazard ratio 1.10, 95% CI 0.80-1.52; P=.52) and TR (hazard ratio 1.27, 95% CI 0.92-1.74; P=.14) progression. Determinants for moderate or greater MR progression included older age, female sex, diuretic use, larger left atrial dimension, left ventricular end-diastolic dimension, left ventricular end-systolic dimension, and lower left ventricular ejection fraction. Determinants of moderate or greater TR progression included older age, female sex, diuretic use, presence of atrial fibrillation, LA dimension, left ventricular end-systolic dimension, and lower left ventricular ejection fraction; statin use was found to be protective. CONCLUSIONS This is the first study to assess the association between telehealth services and the progression of MR and TR. Telehealth patients, who had more comorbidities, displayed similar MR and TR progression versus control patients, indicating that telehealth may slow MR and TR progression. Determinants of MR and TR progression included easy-to-measure traditional echo parameters of cardiac function, older age, female sex, and atrial fibrillation, which can be incorporated into a telehealth platform and advanced alert system, improving patient outcomes through personalized care.
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Affiliation(s)
- Li-Tan Yang
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Jen-Kuang Lee
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Chieh-Mei Tsai
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Ying-Hsien Chen
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Ching-Chang Huang
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Hui-Wen Wu
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Chin-Hua Su
- Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chien-Chang Lee
- Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-Sheng Hung
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Lwun Ho
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
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Kong LH, Xiao XP, Wan R, Chao XP, Chen XJ, Wang J, Wu HW, Li L. [The role of DNA methylation in the screening of endometrial cancer in postmenopausal women]. Zhonghua Yi Xue Za Zhi 2023; 103:907-912. [PMID: 36973218 DOI: 10.3760/cma.j.cn112137-20220929-02058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Objective: To explore the application value of cervical exfoliated cell DNA methylation (CDO1m and CELF4m) combined with or without transvaginal sonography (TVS) for screening endometrial cancer in postmenopausal women. Methods: A total of 143 postmenopausal women who underwent hysteroscopy for suspected endometrial lesions in the Department of Obstetrics and Gynecology of Peking Union Medical College Hospital from May 2020 to October 2021 were enrolled in this study. The cervical exfoliated cells were collected for gene methylation before hysteroscopy. Clinical information, tumor biomarkers, and endometrial thickness of TVS were also collected. With endometrial histopathology as the gold standard, multivariate unconditional logistic regression was applied to analyze the risk factors of endometrial cancer. The role of gene methylation with or without TVS were specifically explored. Results: The 143 patients were divided into an endometrial cancer group (n=56) and a control group (n=87), aged (59.27±6.45) and (61.07±8.26) years, respectively (P=0.051). Multivariate logistic regression analysis showed that, CA125≥35 U/ml, postmenopausal bleeding, endometrial thickness≥5 mm, CDO1m ΔCt≤8.4, and CELF4m ΔCt≤8.8 were the risk factors for endometrial cancer, with OR (95%CI) of 33.23 (2.51-1 335.28), 8.41(1.81-39.05), 14.45 (2.35-88.84), 17.34 (3.34-89.98), and 44.01 (6.79-285.25), respectively (all P values<0.05). The sensitivity and specificity of dual-gene methylation (CDO1 or CELF4) in the screening of endometrial carcinoma were both higher than others factors, reaching 87.5% (95%CI: 75.9%-94.8%) and 90.8% (95%CI: 82.7%-95.9%), respectively. TVS combined with DNA methylation detection further improved the sensitivity to 100.0% (95%CI: 93.6%-100.0%), but could not improve the specificity (59.8%, 95%CI: 48.8%-70.1%). Conclusions: In postmenopausal women with suspected endometrial lesions, the accuracy of cervical cytology DNA methylation is better than other noninvasive clinical indicators for the screening of endometrial cancer. DNA methylation combined with TVS can further improve the sensitivity of screening.
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Affiliation(s)
- L H Kong
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, Peking Union Medical College Hospital, Beijing 100730, China
| | - X P Xiao
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, Peking Union Medical College Hospital, Beijing 100730, China
| | - R Wan
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, Peking Union Medical College Hospital, Beijing 100730, China
| | - X P Chao
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, Peking Union Medical College Hospital, Beijing 100730, China
| | - X J Chen
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, Peking Union Medical College Hospital, Beijing 100730, China
| | - J Wang
- Department of Pathology, Peking Union Medical College Hospital, Beijing 100730, China
| | - H W Wu
- Department of Pathology, Peking Union Medical College Hospital, Beijing 100730, China
| | - L Li
- Department of Obstetrics and Gynecology, National Clinical Research Center for Obstetric & Gynecologic Diseases, Peking Union Medical College Hospital, Beijing 100730, China
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Cheng SLH, Wu HW, Xu H, Singh RM, Yao T, Jang IC, Chua NH. Nutrient status regulates MED19a phase separation for ORESARA1-dependent senescence. New Phytol 2022; 236:1779-1795. [PMID: 36093737 DOI: 10.1111/nph.18478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
The mediator complex is highly conserved in eukgaryotes and is integral for transcriptional responses. Mediator subunits associate with signal-responsive transcription factors (TF) to activate expression of specific signal-responsive genes. As the key TF of Arabidopsis thaliana senescence, ORESARA1 (ORE1) is required for nitrogen deficiency (-N) induced senescence; however, the mediator subunit that associates with ORE1 remains unknown. Here, we show that Arabidopsis MED19a associates with ORE1 to activate -N senescence-responsive genes. Disordered MED19a forms inducible nuclear condensates under -N that is regulated by decreasing MED19a lysine acetylation. MED19a carboxyl terminus (cMED19a) harbors a mixed-charged intrinsically disordered region (MC-IDR) required for ORE1 interaction and liquid-liquid phase separation (LLPS). Plant and human cMED19 are sufficient to form heterotypic condensates with ORE1. Human cMED19 MC-IDR, but not yeast cMED19 IDR, partially complements med19a suggesting functional conservation in evolutionarily distant eukaryotes. Phylogenetic analysis of eukaryotic cMED19 revealed that the MC-IDR could arise through convergent evolution. Our result of MED19 MC-IDR suggests that plant MED19 is regulated by phase separation during stress responses.
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Affiliation(s)
- Steven Le Hung Cheng
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore, 117604, Singapore
- Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore, 117543, Singapore
| | | | - Haiying Xu
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore, 117604, Singapore
| | - Reuben Manjit Singh
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore, 117604, Singapore
| | - Tao Yao
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore, 117604, Singapore
| | - In-Cheol Jang
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore, 117604, Singapore
- Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore, 117543, Singapore
| | - Nam-Hai Chua
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore, 117604, Singapore
- Department of Biochemistry, School of Medicine, National University of Singapore, 8 Medical Drive, Singapore, 117596, Singapore
- Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, 1 Create Way, #03-06/07/8 Research Wing, Singapore, 138602, Singapore
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Wu HW, Fortuni F, Butcher SC, Van Der Kley F, De Paula Lustosa R, Tjahjadi CA, De Weger A, Delgado V, Bax JJ, Ajmone Marsan N. Prognostic value of left ventricular myocardial work indices in patients undergoing transcatheter aortic valve replacement. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1546] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Left ventricular myocardial work (LVMW) is a novel echocardiographic-based method to assess LV function using pressure-strain loops taking LV afterload into account. In patients with aortic stenosis (AS), this approach was shown to improve assessment of LV performance as compared to conventional and advanced parameters of LV systolic function, but data on its prognostic value are lacking.
Purpose
To evaluate the prognostic value of LVMW indices in patients with severe AS undergoing transcatheter aortic valve replacement (TAVR).
Methods
LVMW indices, including LV global work index (GWI), global constructive work (GCW), global wasted work (GWW) and global work efficiency (GWE) were calculated in 281 patients with severe AS (age 82, IQR 78–85 years, 52% male) prior to the TAVR procedure. As previously validated, LV systolic pressure was derived non-invasively by adding the mean aortic gradient to the brachial systolic pressure. LV global longitudinal strain and LV systolic pressure were then incorporated to construct pressure-strain loops to determine the LVMW indices. The study endpoint was all-cause mortality.
Results
In the total population average GWI was 1872±753 mmHg%, GCW 2240±797 mmHg%, GWW 200 (IQR 127–306) mmHg% and GWE 89 (IQR 84–93)%. During a median follow-up of 52 (IQR 41–67) months, 64 patients died. These patients showed lower values of GWI (1644 vs 1940 mmHg%, p=0.006) and GCW (2010 vs 2307 mmHg%, p=0.009) as compared to patients who survived while GWW (197 vs 200 mmHg%, p=0.794) and GWE (88% vs 90%, p=0.102) were similar. While LV GCW, GWW and GWE did not show a significant association with the study endpoint, GWI was independently associated with all-cause mortality (HR per-tertile-increase 0.639; 95% CI 0.463–0.883; P=0.007), and the patients in the lowest GWI tertile showed the worst survival rates (Figure 1). Of interest, patients in the lowest GWI tertile were more likely to be male (63% vs 56% and 37% from the lowest to the highest tertile, P=0.001), had a higher prevalence of atrial fibrillation (26% vs 19% and 8% from the lowest to the highest tertile, P=0.006), worse renal function (53 mL/min/1.73 m2 vs 64 mL/min/1.73 m2 and 62 mL/min/1.73 m2 from the lowest to the highest tertile, P=0.038) and larger LV dimension (LVEDD 52 mm vs 47 mm and 46 mm from lowest through highest tertile, p<0.001). Importantly, when added to a basal model, LVGWI yielded a higher increase in predictivity compared to both conventional and advanced parameters of LV systolic function (Figure 2). Also, in a model corrected for the hemodynamic class of AS (high-gradient, low-flow low-gradient), GWI also showed a significant independent association (P=0.003) with all-cause mortality.
Conclusions
LVGWI is independently associated with all-cause mortality in patients undergoing TAVR and has a higher prognostic value compared to both conventional and advanced parameters of LV systolic function.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- H W Wu
- Leiden University Medical Center , Leiden , The Netherlands
| | - F Fortuni
- Leiden University Medical Center , Leiden , The Netherlands
| | - S C Butcher
- Leiden University Medical Center , Leiden , The Netherlands
| | - F Van Der Kley
- Leiden University Medical Center , Leiden , The Netherlands
| | | | - C A Tjahjadi
- Leiden University Medical Center , Leiden , The Netherlands
| | - A De Weger
- Leiden University Medical Center , Leiden , The Netherlands
| | - V Delgado
- Leiden University Medical Center , Leiden , The Netherlands
| | - J J Bax
- Leiden University Medical Center , Leiden , The Netherlands
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9
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Jin J, Ohama N, He X, Wu HW, Chua NH. Tissue-specific transcriptomic analysis uncovers potential roles of natural antisense transcripts in Arabidopsis heat stress response. Front Plant Sci 2022; 13:997967. [PMID: 36160979 PMCID: PMC9498583 DOI: 10.3389/fpls.2022.997967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/17/2022] [Indexed: 05/26/2023]
Abstract
Natural antisense transcripts (NATs) are an important class of non-coding ribonucleic acids (RNAs) that have been shown to regulate gene expression. Using strand-specific RNA sequencing, 36,317 NAT pairs were identified, and 5,536 were specifically expressed under heat stress. We found distinct expression patterns between vegetative and reproductive tissues for both coding genes and genes encoding NATs. Genes for heat-responsive NATs are associated with relatively high levels of H3K4me3 and low levels of H3K27me2/3. On the other hand, small RNAs are significantly enriched in sequence overlapping regions of NAT pairs, and a large number of heat-responsive NATs pairs serve as potential precursors of nat-siRNAs. Collectively, our results suggest epigenetic modifications and small RNAs play important roles in the regulation of NAT expression, and highlight the potential significance of heat-inducible NATs.
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Affiliation(s)
- Jingjing Jin
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, China
| | - Naohiko Ohama
- Temasek Life Sciences Laboratory, National University of Singapore, Singapore, Singapore
| | - Xiujing He
- West China Hospital, Sichuan University, Chengdu, China
| | - Hui-Wen Wu
- Temasek Life Sciences Laboratory, National University of Singapore, Singapore, Singapore
| | - Nam-Hai Chua
- Temasek Life Sciences Laboratory, National University of Singapore, Singapore, Singapore
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10
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Chen YH, Wu HW, Huang CC, Lee JK, Yang LT, Hsu TP, Hung CS, Ho YL. The Logistics of Medication and Patient Flow in Video-Based Virtual Clinics During a Sudden COVID-19 Outbreak in Taiwan: Observational Study. Interact J Med Res 2022; 11:e37880. [PMID: 35687404 PMCID: PMC9191329 DOI: 10.2196/37880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/26/2022] [Accepted: 05/20/2022] [Indexed: 11/18/2022] Open
Abstract
Background The COVID-19 pandemic was well controlled in Taiwan until an outbreak in May 2021. Telemedicine was rapidly implemented to avoid further patient exposure and to unload the already burdened medical system. Objective To understand the effect of COVID-19 on the implementation of video-based virtual clinic visits during this outbreak, we analyzed the logistics of prescribing medications and patient flow for such virtual visits at a tertiary medical center. Methods We retrospectively collected information on video-based virtual clinic visits and face-to-face outpatient visits from May 1 to August 31, 2021, from the administrative database at National Taiwan University Hospital. The number of daily new confirmed COVID-19 cases in Taiwan was obtained from an open resource. Results There were 782 virtual clinic visits during these 3 months, mostly for the departments of internal medicine, neurology, and surgery. The 3 most common categories of medications prescribed were cardiovascular, diabetic, and gastrointestinal, of which cardiovascular medications comprised around one-third of all medications prescribed during virtual clinic visits. The number of virtual clinic visits was significantly correlated with the number of daily new confirmed COVID-19 cases, with approximately a 20-day delay (correlation coefficient 0.735; P<.001). The patient waiting time for video-based virtual clinic visits was significantly shorter compared with face-to-face clinic visits during the same period (median 3, IQR 2-6 min vs median 20, IQR 9-42 min; rank sum P<.001). Although the time saved was appreciated by the patients, online payment with direct delivery of medications without the need to visit a hospital was still their major concern. Conclusions Our data showed that video-based virtual clinics can be implemented rapidly after a COVID-19 outbreak. The virtual clinics were efficient, as demonstrated by the significantly reduced waiting time. However, there are still some barriers to the large-scale implementation of video-based virtual clinics. Better preparation is required to improve performance in possible future large outbreaks.
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Affiliation(s)
- Ying-Hsien Chen
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,National Taiwan University Hospital Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Hui-Wen Wu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,National Taiwan University Hospital Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Ching-Chang Huang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,National Taiwan University Hospital Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Jen-Kuang Lee
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,National Taiwan University Hospital Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Li-Tan Yang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,National Taiwan University Hospital Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Tse-Pin Hsu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,National Taiwan University Hospital Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-Sheng Hung
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,National Taiwan University Hospital Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Lwun Ho
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,National Taiwan University Hospital Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
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11
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Wu HW, Zhao YM, Huang H. [Mechanism of relapse and its therapeutic strategies after allogeneic hematopoietic stem cell transplantation]. Zhonghua Xue Ye Xue Za Zhi 2021; 42:869-877. [PMID: 34788930 PMCID: PMC8607022 DOI: 10.3760/cma.j.issn.0253-2727.2021.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- H W Wu
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University; Institute of Hematology, Zhejiang University, Hangzhou 310006, China
| | - Y M Zhao
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University; Institute of Hematology, Zhejiang University, Hangzhou 310006, China
| | - H Huang
- Bone Marrow Transplantation Center, The First Affiliated Hospital, Zhejiang University; Institute of Hematology, Zhejiang University, Hangzhou 310006, China
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12
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Wu WM, Chen J, Bai CM, Chi Y, Du YQ, Feng ST, Huo L, Jiang YX, Li JN, Lou WH, Luo J, Shao CH, Shen L, Wang F, Wang LW, Wang O, Wang Y, Wu HW, Xing XP, Xu JM, Xue HD, Xue L, Yang Y, Yu XJ, Yuan CH, Zhao H, Zhu XZ, Zhao YP. [The Chinese guidelines for the diagnosis and treatment of pancreatic neuroendocrine neoplasms (2020)]. Zhonghua Wai Ke Za Zhi 2021; 59:401-421. [PMID: 34102722 DOI: 10.3760/cma.j.cn112139-20210319-00135] [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] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Pancreatic neuroendocrine neoplasms (pNENs) are highly heterogeneous, and the management of pNENs patients can be intractable. To address this challenge, an expert committee was established on behalf of the Group of Pancreatic Surgery, Chinese Society of Surgery, Chinese Medical Association, which consisted of surgical oncologists, gastroenterologists, medical oncologists, endocrinologists, radiologists, pathologists, and nuclear medicine specialists. By reviewing the important issues regarding the diagnosis and treatment of pNENs, the committee concluded evidence-based statements and recommendations in this article, in order to further improve the management of pNENs patients in China.
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Affiliation(s)
- W M Wu
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730,China
| | - J Chen
- Department of Gastroenterology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080,China
| | - C M Bai
- Department of Medical Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730,China
| | - Yihebali Chi
- Department of Medical Oncology, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100021,China
| | - Y Q Du
- Department of Gastroenterology, Changhai Hospital Affiliated to Navy Medical University, Shanghai 200433,China
| | - S T Feng
- Department of Radiology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080,China
| | - L Huo
- Department of Nuclear Medicine, Beijing Key Laboratory of Molecular Targeted Diagnosis and Therapy in Nuclear Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730,China
| | - Y X Jiang
- Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730,China
| | - J N Li
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730,China
| | - W H Lou
- Department of General Surgery, Zhongshan Hospital of Fudan University, Shanghai 200032,China
| | - J Luo
- Department of Pathology, China-Japan Friendship Hospital, Beijing 100029,China
| | - C H Shao
- Department of Pancreatic-biliary Surgery, Changzheng Hospital, Navy Medical University, Shanghai 200003,China
| | - L Shen
- Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing 100142,China
| | - F Wang
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing 210029,China
| | - L W Wang
- Department of Oncology, Renji Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200127,China
| | - O Wang
- Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730,China
| | - Y Wang
- Department of Interventional Oncology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080,China
| | - H W Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730,China
| | - X P Xing
- Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730,China
| | - J M Xu
- Department of Gastrointestinal Oncology, the Fifth Medical Center, Chinese People's Liberation Army General Hospital, Beijing 100071,China
| | - H D Xue
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730,China
| | - L Xue
- Department of Pathology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080,China
| | - Y Yang
- Department of Hepatic Surgery and Liver Transplantation Center, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630,China
| | - X J Yu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032,China
| | - C H Yuan
- Department of General Surgery, Peking University Third Hospital, Beijing 100191,China
| | - H Zhao
- Department of Hepatobiliary Surgery, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100021,China
| | - X Z Zhu
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai 200032,China
| | - Y P Zhao
- Department of General Surgery, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730,China
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13
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Huang CC, Chen YH, Hung CS, Lee JK, Hsu TP, Wu HW, Chuang PY, Chen MF, Ho YL. The Association Between Short-term Exposure to Ambient Air Pollution and Patient-Level Home Blood Pressure Among Patients With Chronic Cardiovascular Diseases in a Web-Based Synchronous Telehealth Care Program: Retrospective Study. JMIR Public Health Surveill 2021; 7:e26605. [PMID: 34100764 PMCID: PMC8238492 DOI: 10.2196/26605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 04/09/2021] [Accepted: 04/15/2021] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND The association between short-term exposure to ambient air pollution and blood pressure has been inconsistent, as reported in the literature. OBJECTIVE This study aimed to investigate the relationship between short-term ambient air pollution exposure and patient-level home blood pressure (HBP). METHODS Patients with chronic cardiovascular diseases from a telehealth care program at a university-affiliated hospital were enrolled as the study population. HBP was measured by patients or their caregivers. Hourly meteorological data (including temperature, relative humidity, wind speed, and rainfall) and ambient air pollution monitoring data (including CO, NO2, particulate matter with a diameter of <10 µm, particulate matter with a diameter of <2.5 µm, and SO2) during the same time period were obtained from the Central Weather Bureau and the Environmental Protection Administration in Taiwan, respectively. A stepwise multivariate repeated generalized estimating equation model was used to assess the significant factors for predicting systolic and diastolic blood pressure (SBP and DBP). RESULTS A total of 253 patients and 110,715 HBP measurements were evaluated in this study. On multivariate analysis, demographic, clinical, meteorological factors, and air pollutants significantly affected the HBP (both SBP and DBP). All 5 air pollutants evaluated in this study showed a significant, nonlinear association with both home SBP and DBP. Compared with demographic and clinical factors, environmental factors (meteorological factors and air pollutants) played a minor yet significant role in the regulation of HBP. CONCLUSIONS Short-term exposure to ambient air pollution significantly affects HBP in patients with chronic cardiovascular disease.
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Affiliation(s)
- Ching-Chang Huang
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Ying-Hsien Chen
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-Sheng Hung
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Jen-Kuang Lee
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Tse-Pin Hsu
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan
| | - Hui-Wen Wu
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan
| | - Pao-Yu Chuang
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan
| | - Ming-Fong Chen
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Lwun Ho
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
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14
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Lee JK, Hung CS, Huang CC, Chen YH, Wu HW, Chuang PY, Yu JY, Ho YL. The Costs and Cardiovascular Benefits in Patients With Peripheral Artery Disease From a Fourth-Generation Synchronous Telehealth Program: Retrospective Cohort Study. J Med Internet Res 2021; 23:e24346. [PMID: 34003132 PMCID: PMC8170551 DOI: 10.2196/24346] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 10/22/2020] [Accepted: 04/14/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Patients with peripheral artery disease (PAD) are at high risk for major cardiovascular events, including myocardial infarction, stroke, and hospitalization for heart failure. We have previously shown the clinical efficacy of a fourth-generation synchronous telehealth program for some patients, but the costs and cardiovascular benefits of the program for PAD patients remain unknown. OBJECTIVE The telehealth program is now widely used by higher-risk cardiovascular patients to prevent further cardiovascular events. This study investigated whether patients with PAD would also have better cardiovascular outcomes after participating in the fourth-generation synchronous telehealth program. METHODS This was a retrospective cohort study. We screened 5062 patients with cardiovascular diseases who were treated at National Taiwan University Hospital and then enrolled 391 patients with a diagnosis of PAD. Of these patients, 162 took part in the telehealth program, while 229 did not and thus served as control patients. Inverse probability of treatment weighting (IPTW) based on the propensity score was used to mitigate possible selection bias. Follow-up outcomes included heart failure hospitalization, acute coronary syndrome, stroke, and all-cause readmission during the 1-year follow-up period and through the last follow-up. RESULTS The mean follow-up duration was 3.1 (SD 1.8) years for the patients who participated in the telehealth program and 3.2 (SD 1.8) for the control group. The telehealth program patients exhibited lower risk of ischemic stroke than did the control group in the first year after IPTW (0.9% vs 3.5%; hazard ratio [HR] 0.24; 95% CI 0.07-0.80). The 1-year composite endpoint of vascular accident, including acute coronary syndrome and stroke, was also significantly lower in the telehealth program group after IPTW (2.4% vs 5.2%; HR 0.46; 95% CI 0.21-0.997). At the end of the follow-up, the telehealth program group continued to exhibit a significantly lower rate of ischemic stroke than did the control group after IPTW (0.9% vs 3.5%; HR 0.52, 95% CI 0.28-0.93). Furthermore, the medical costs of the telehealth program patients were not higher than those of the control group, whether in terms of outpatient, emergency department, hospitalization, or total costs. CONCLUSIONS The PAD patients who participated in the fourth-generation synchronous telehealth program exhibited lower risk of ischemic stroke events over both mid- and long-term follow-up periods. However, larger-scale and prospective randomized clinical trials are needed to confirm our findings.
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Affiliation(s)
- Jen-Kuang Lee
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Department of Laboratory Medicine, National Taiwan University College of Medicine, Taipei, Taiwan.,Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chi-Sheng Hung
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ching-Chang Huang
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ying-Hsien Chen
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hui-Wen Wu
- Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan
| | - Pao-Yu Chuang
- Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan
| | - Jiun-Yu Yu
- Department of Business Administration, College of Management, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Lwun Ho
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan.,Cardiovascular Center, National Taiwan University Hospital, Taipei, Taiwan.,Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
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15
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Zhang YH, Wu HW, Wang J, Liang ZY. [Analysis of microsatellite instability in endometroid carcinoma with deficient mismatch repair]. Zhonghua Bing Li Xue Za Zhi 2021; 50:470-475. [PMID: 33915653 DOI: 10.3760/cma.j.cn112151-20210201-00114] [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: 11/05/2022]
Abstract
Objective: To analyze the microsatellite instability (MSI) status in endometrioid endometrial carcinoma (EEC) with deficient mismatch repair (dMMR) and to explore the concordance between MSI next generation sequencing (NGS)/PCR and MMR immunohistochemistry (IHC) results. Methods: Sixty dMMR EEC cases by IHC from November 2017 to February 2019 were selected in the Department of Pathology, Peking Union Medical College Hospital. Two pathologists reviewed the IHC results. The MSI status and the germline/somatic mutational status of MMR genes were analyzed by NGS. MLH1 promoter methylation status was determined by methylation-specific PCR (MSP) in cases with MLH1 protein deficiency. In cases with discrepant results between MMR IHC and MSI NGS, the MSI status was detected again by PCR, and the reasons for the discrepancy were discussed with gene mutation and MLH1 promoter methylation results. Results: Among 60 dMMR EEC specimens, 3 samples were re-assigned as proficient mismatch repair (pMMR) after pathological review, and identified as MSS by NGS. Another 3 dMMR cases showed MSI-uncertainty (MSI-U) by NGS due to insufficient tumor content. In the remaining 54 cases, the concordance between MMR IHC and MSI NGS was 87% (47/54). The seven discrepant cases was further analyzed: in 5 discrepant cases with MLH1/PMS2 protein loss, one case did not have enough samples for detection, one case was MSI-H, and the remaining three cases were MSS by PCR. All these 5 cases with MLH1/PMS2 protein loss showed the MLH1 promoter hypermethylation, two of which also had a somatic mutation in the MSH2 gene. The two discrepant cases with MSH6 protein loss were both MSS by PCR, one of which was considered to have Lynch syndrome with germline mutation in MSH6 gene. Conclusions: Although the overwhelming majority of dMMR EEC cases by IHC shows MSI-H by NGS/PCR, there are uncommon discrepant dMMR EEC cases with MSS. They are mostly found in cases with MLH1/PMS2 protein loss caused by MLH1 promoter hypermethylation and rarely related to Lynch syndrome. Both MMR IHC and MSI NGS/PCR tests have their advantages and disadvantages, complimentary to each other.
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Affiliation(s)
- Y H Zhang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100730, China
| | - H W Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100730, China
| | - J Wang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100730, China
| | - Z Y Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing 100730, China
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16
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Zhong PC, Shu R, Wu HW, Liu ZW, Shen XL, Hu YJ. Altered gene expression in glycolysis-cholesterol synthesis axis correlates with outcome of triple-negative breast cancer. Exp Biol Med (Maywood) 2021; 246:560-571. [PMID: 33243007 PMCID: PMC7934150 DOI: 10.1177/1535370220975206] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 10/30/2020] [Indexed: 12/31/2022] Open
Abstract
Identification of molecular subtypes of clinically resectable triple-negative breast cancer (TNBC) is of great importance to achieve better clinical outcomes. Inter- and intratumor metabolic heterogeneity improves cancer survival, and the interaction of various metabolic pathways may affect treatment outcome of TNBC. We speculated that TNBC can be categorized into prognostic metabolic subtype according to the expression changes of glycolysis and cholesterol synthesis. The genome, transcriptome, and clinical data were downloaded from the Cancer Genome Atlas and Molecular Taxonomy of Breast Cancer International Consortium and subsequently analyzed by integrated bioinformatics methods. Four subtypes, namely, glycolytic, cholesterogenic, quiescent, and mixed, were classified according to the normalized median expressions of the genes involved in glycolysis and cholesterol synthesis. In the four subtypes, the cholesterogenic type was correlated with the shortest median survival (log rank P = 0.044), while patients with high-expressed glycolytic genes tended to have a longer survival. Tumors with PIK3CA amplification and dynein axonemal heavy chain 2 deletion exhibited higher expressions of cholesterogenic genes than other mutant oncogenes. The expressions of mitochondrial pyruvate carrier MPC1 and MPC2 were the lowest in quiescent tumor, and MPC2 expression was higher in cholesterogenic tumor compared with glycolytic or quiescent tumor (t-test P < 0.001). Glycolytic and cholesterogenic gene expressions were related to the expressions of prognostic genes in some other types of cancers. Classification of glycolytic and cholesterogenic pathways according to metabolic characteristics provides a new understanding to previously identified subtypes of TNBC and could improve personalized treatments based on tumor metabolic profiles.
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Affiliation(s)
- Peng-Cheng Zhong
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, China
| | - Rong Shu
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, China
| | - Hui-Wen Wu
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, China
| | - Zhi-Wen Liu
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, China
| | - Xiao-Ling Shen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, China
| | - Ying-Jie Hu
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, China
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17
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Wu HW, Sun L, Zhang L, Xi ZL, Qin T, Wang CT, Li DM. [Clinical analysis of 30 cases of traumatic aortic injury]. Zhonghua Wai Ke Za Zhi 2020; 58:929-935. [PMID: 33249811 DOI: 10.3760/cma.j.cn112139-20200101-00001] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To examine the clinical treatment methods and short- and mid-term results of traumatic aortic injury (TAI). Methods: The clinical data of 30 patients suffering from TAI who were admitted to Department of Cardiothoracic Surgery, General Hospital of Eastern Theater Command from January 2010 to December 2018 were summarized and analyzed retrospectively. All patients were diagnosed as TAI by aortic CT angiography. There were 20 males and 10 females, aging (46.4±15.2) years (range: 17 to 76 years). One patient was diagnosed as extensive intramural hematoma (IMH). The other 29 cases had aortic intimal injury, and the primary intimal tear of all these patients was located in the isthmus of descending aorta. There were 2 cases of ulcer-like changes combined with IMH, and 27 cases of traumatic aortic dissection (TAD) including 23 cases of localized TAD and 4 cases of extensive TAD. Endovascular repair, artificial vascular replacement or conservative treatment were performed according to the patient's specific condition. The patients were followed up in outpatient or by telephone. The clinical data of all the patients of the in-hospital treatment and during follow-up period was analyzed retrospectively. Results: One patient with IMH was treated conservatively. Surgical intervention was performed in 29 cases with intimal injury, of which 14 cases underwent emergency surgery on the day of admission or the next day, and 15 cases underwent elective surgery. Twenty-seven cases underwent thoracic endovascular aortic repair (TEVAR), and 2 cases underwent artificial vascular replacement. Nine cases suffered combined operations in early or late stage. All patients were cured and discharged with in-hospital stay of (13.2±5.4) days (range: 7 to 30 days). There was no in-hospital death. Two patients underwent tracheotomy, and the rest had no serious complications. Up to the last follow-up in June 2019, 4 patients were lost to follow-up, and the remaining 26 patients were followed up for (50.6±34.1) months (range: 6 to 112 months) and survived healthily without new aortic events. Conclusions: Most of TAD cases are ascribed to Stanford type B aortic dissection, and a satisfactory short-term and mid-term result can be achieved by emergency TEVAR in most patients. Some patients can achieve good long-term results by open surgery with artificial vascular replacement.
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Affiliation(s)
- H W Wu
- Department of Cardiothoracic Surgery, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - L Sun
- Department of Cardiothoracic Surgery, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - L Zhang
- Department of Cardiothoracic Surgery, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - Z L Xi
- Department of Cardiothoracic Surgery, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - T Qin
- Department of Cardiothoracic Surgery, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - C T Wang
- Department of Cardiothoracic Surgery, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - D M Li
- Department of Cardiothoracic Surgery, General Hospital of Eastern Theater Command, Nanjing 210002, China
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18
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Niu YR, Wu HW, Liang ZY. [Clinicopathological features and prognosis of synchronous bilateral breast cancers]. Zhonghua Bing Li Xue Za Zhi 2020; 49:435-440. [PMID: 32392926 DOI: 10.3760/cma.j.cn112151-20191224-00825] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the clinicopathologic characteristics and relevant factors affecting prognosis of patients with synchronous bilateral breast cancer. Methods: The clinical data, pathologic characteristics and immunohistochemical expression characteristics of 151 patients with synchronous bilateral breast cancers diagnosed in Peking Union Medical College Hospital from 2008 to 2018 were collected and analyzed. The factors affecting the prognosis were analyzed by Log rank test, Kaplan-Meier survival analysis, Cox regression and other methods. Results: Synchronous bilateral breast cancer cases accounted for 1.2% (151/12 239) of all breast cancer patients in the same period, and 14.6% (22/151) had a family history. The patients' age range was 22-88 years, mainly female, with a mean survival of 42.5 months. There were 106 patients with synchronous bilateral invasive breast cancers, 6 patients with synchronous bilateral breast cancer in situ, and 39 patients with unilateral invasive breast cancer and unilateral breast cancer in situ. In synchronous bilateral invasive breast cancers, the histological type was mainly non-specific type (84.9%, 180/212), the histological grade was mainly Grade 2 (60.8%,129/212), the TNM stage was mainly stage Ⅰ (50.5%, 107/212), the tumor size was mainly T1 (68.9%, 146/212), and the regional lymph node was mainly N0 (61.8%, 131/212). The molecular subtypes were mainly Luminal A-like (38.1%, 75/197) and Luminal B-like (43.7%, 86/197); ER (78.2%, 154/197) and PR (72.1%,142/197)were mainly positive, and HER2 was mainly negative (91.9%, 181/197). There were 85 (80.2%) patients and 75 (70.8%) patients with the same histological type and histological grade on both sides, respectively. The concordance of tumor size T stage and the regional lymph nodes N stage were 58.5% (62/106) and 55.7% (59/106), respectively. The concordance of molecular subtype was 54.9% (50/91), and the concordance of ER, PR, HER2 and Ki-67 were 83.5% (76/91), 76.9% (70/91), 89.0% (81/91) and 59.3% (54/91), respectively. The expression of ER and PR in synchronous bilateral invasive breast cancer was significantly correlated with prognosis (P<0.05). Conclusions: Among patients with synchronous bilateral breast cancers, bilateral invasive breast cancer is the most common, the prognosis is the worst, and the pathologic characteristics of bilateral breast cancer tend to be consistent. The expression of ER and PR in synchronous bilateral invasive breast cancer is significantly correlated with prognosis, that is, best for bilateral ER-positive patients, worst for bilateral ER-negative patients, and intermediate for unilateral ER-positive patients, thus suggesting the importance of ER and PR detection in synchronous bilateral invasive breast cancers.
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Affiliation(s)
- Y R Niu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China
| | - H W Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China
| | - Z Y Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100730, China
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Chen ZL, Wu HW, Mei XW, Yin WH, Xu SY, Liu SQ, Chen YC, Wang G, Zhang CJ, Ding XL, Wu JN. [Correlation analysis between Dx-pH monitoring and proton pump inhibitor test in the diagnosis of laryngopharyngeal reflux disease]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:34-39. [PMID: 31954386 DOI: 10.3760/cma.j.issn.1673-0860.2020.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: The consistency of 24-hour oropharyngeal Dx-pH monitoring and proton pump inhibitor(PPI) test in the diagnosis of laryngopharyngeal reflux disease (LPRD) was investigated. Methods: Sixty patients with laryngopharyngeal reflux (LPR) related symptoms who had never received PPI treatment were assessed by reflux symptom index (RSI) and reflux finding score (RFS) between October 2017 and October 2018, including 28 males and 38 females, aged from 16 to 72 years, with a medium age of 38 years. Prior to treatment, all patients were evaluated with 24 hours oropharyngeal Dx-pH monitoring(Restech). After empiric therapy with PPI twice-daily for 8 weeks, the efficacy was evaluated according to posttreatment RSI score.The data was analysed with Kruskal-Wallis test, Student Newman Keuls test and consistency check. Results: (1)Among all 60 patients,13 patients (21.7%) had pathologic Ryan score and all resulted responsive to PPI;27 patients (45.0%) with a negative Ryan score were unresponsive to PPI; 20 patients (33.3%) despite a negative Ryan score resulted responsive to PPI therapy. Considering responsiveness to PPI therapy as the gold standard for the diagnosis of LPRD, the sensitivity, specificity, positive predictive value and negative predictive value of Ryan score were 39.4%, 100%, 100% and 57.4% respectively. The Kappa value was 0.369 (P<0.01). (2)Among 34 patients (56.7%) with positive Dx-pH results (24-hour oropharyngeal acid reflux events≥ 3 times), 29 patients were positive and 5 patients were negative in PPI test. Among 26 patients with negative Dx-pH results (24-hour oropharyngeal acid reflux events<3 times), 4 patients were positive and 22 patients were negative in PPI test. Considering responsiveness to PPI therapy as the gold standard for the diagnosis of LPRD, the sensitivity, specificity, positive predictive value and negative predictive value of 24-hour oropharyngeal acid reflux events were 87.9%, 81.5%, 85.3% and 84.6% respectively. The Kappa value was 0.696(P<0.01). Conclusions: There is a positive correlation between 24-hour oropharyngeal Dx-pH monitoring positive results (24-hour oropharyngeal acid reflux events≥3 times) and PPI test in the diagnosis of LPRD. The 24-hour oropharyngeal Dx-pH monitoring can be a promising tool for the diagnosis of suspected LPRD patients, and more sensitive and accurate Dx-pH diagnostic index will be required in the clinic.
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Affiliation(s)
- Z L Chen
- Department of Otorhinolaryngology, Hangzhou Traditional Chinese Medicine Hospital, Hangzhou 310007, China
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Huang CC, Chen YH, Hung CS, Lee JK, Hsu TP, Wu HW, Chuang PY, Chen MF, Ho YL. Assessment of the Relationship Between Ambient Temperature and Home Blood Pressure in Patients From a Web-Based Synchronous Telehealth Care Program: Retrospective Study. J Med Internet Res 2019; 21:e12369. [PMID: 30829574 PMCID: PMC6421515 DOI: 10.2196/12369] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 02/07/2019] [Accepted: 02/10/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Decreased ambient temperature significantly increases office blood pressure, but few studies have evaluated the effect of ambient temperature on home blood pressure. OBJECTIVE We aimed to investigate the relationship between short-term ambient temperature exposure and home blood pressure. METHODS We recruited patients with chronic cardiovascular diseases from a telehealth care program at a university-affiliated hospital. Blood pressure was measured at home by patients or their caregivers. We obtained hourly meteorological data for Taipei (temperature, relative humidity, and wind speed) for the same time period from the Central Weather Bureau, Taiwan. RESULTS From 2009 to 2013, we enrolled a total of 253 patients. Mean patient age was 70.28 (SD 13.79) years, and 66.0% (167/253) of patients were male. We collected a total of 110,715 home blood pressure measurements. Ambient temperature had a negative linear effect on all 3 home blood pressure parameters after adjusting for demographic and clinical factors and antihypertensive agents. A 1°C decrease was associated with a 0.5492-mm Hg increase in mean blood pressure, a 0.6841-mm Hg increase in systolic blood pressure, and a 0.2709-mm Hg increase in diastolic blood pressure. This temperature effect on home blood pressure was less prominent in patients with diabetes or hypertension. Antihypertensive agents modified this negative effect of temperature on home blood pressure to some extent, and angiotensin receptor blockers had the most favorable results. CONCLUSIONS Short-term exposure to low ambient temperature significantly increased home blood pressure in patients with chronic cardiovascular diseases. Antihypertensive agents may modify this effect.
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Affiliation(s)
- Ching-Chang Huang
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Ying-Hsien Chen
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-Sheng Hung
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Jen-Kuang Lee
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Tse-Pin Hsu
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan
| | - Hui-Wen Wu
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan
| | - Pao-Yu Chuang
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Nursing, National Taiwan University Hospital, Taipei, Taiwan
| | - Ming-Fong Chen
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Lwun Ho
- Graduate Institute of Clinical Medicine, Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
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Niu YR, Wu HW, Liang ZY. [Clinicopathologic and molecular characteristics of synchronous bilateral breast cancer]. Zhonghua Bing Li Xue Za Zhi 2018; 47:811-813. [PMID: 30317747 DOI: 10.3760/cma.j.issn.0529-5807.2018.10.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Wu HW, Deng S, Xu H, Mao HZ, Liu J, Niu QW, Wang H, Chua NH. A noncoding RNA transcribed from the AGAMOUS (AG) second intron binds to CURLY LEAF and represses AG expression in leaves. New Phytol 2018; 219:1480-1491. [PMID: 29862530 DOI: 10.1111/nph.15231] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 04/23/2018] [Indexed: 05/25/2023]
Abstract
Dispersed H3K27 trimethylation (H3K27me3) of the AGAMOUS (AG) genomic locus is mediated by CURLY LEAF (CLF), a component of the Polycomb Repressive Complex (PRC) 2. Previous reports have shown that the AG second intron, which confers AG tissue-specific expression, harbors sequences targeted by several positive and negative regulators. Using RACE reverse transcription polymerase chain reaction, we found that the AG intron 2 encodes several noncoding RNAs. RNAi experiment showed that incRNA4 is needed for CLF repressive activity. AG-incRNA4RNAi lines showed increased leaf AG mRNA levels associated with a decrease of H3K27me3 levels; these plants displayed AG overexpression phenotypes. Genetic and biochemical analyses demonstrated that the AG-incRNA4 can associate with CLF to repress AG expression in leaf tissues through H3K27me3-mediated repression and to autoregulate its own expression level. The mechanism of AG-incRNA4-mediated repression may be relevant to investigations on tissue-specific expression of Arabidopsis MADS-box genes.
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MESH Headings
- AGAMOUS Protein, Arabidopsis/genetics
- AGAMOUS Protein, Arabidopsis/metabolism
- Arabidopsis/genetics
- Arabidopsis Proteins/genetics
- Arabidopsis Proteins/metabolism
- Co-Repressor Proteins/metabolism
- Flowers/genetics
- Gene Expression Regulation, Plant
- Glucuronidase/metabolism
- Histones/metabolism
- Homeodomain Proteins/genetics
- Homeodomain Proteins/metabolism
- Introns/genetics
- Organ Specificity/genetics
- Plant Leaves/genetics
- Plants, Genetically Modified
- Promoter Regions, Genetic/genetics
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Untranslated/genetics
- RNA, Untranslated/metabolism
- Seedlings/genetics
- Transcription, Genetic
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Affiliation(s)
- Hui-Wen Wu
- Laboratory of Plant Molecular Biology, Rockefeller University, New York, NY, 10065-6399, USA
- Temasek Life Sciences Laboratory, Singapore City, 117604, Singapore
| | - Shulin Deng
- Laboratory of Plant Molecular Biology, Rockefeller University, New York, NY, 10065-6399, USA
- Temasek Life Sciences Laboratory, Singapore City, 117604, Singapore
| | - Haiying Xu
- Temasek Life Sciences Laboratory, Singapore City, 117604, Singapore
| | - Hui-Zhu Mao
- Temasek Life Sciences Laboratory, Singapore City, 117604, Singapore
| | - Jun Liu
- Laboratory of Plant Molecular Biology, Rockefeller University, New York, NY, 10065-6399, USA
| | - Qi-Wen Niu
- Laboratory of Plant Molecular Biology, Rockefeller University, New York, NY, 10065-6399, USA
| | - Huan Wang
- Laboratory of Plant Molecular Biology, Rockefeller University, New York, NY, 10065-6399, USA
| | - Nam-Hai Chua
- Laboratory of Plant Molecular Biology, Rockefeller University, New York, NY, 10065-6399, USA
- Temasek Life Sciences Laboratory, Singapore City, 117604, Singapore
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Li Y, Xue XW, Luo YF, Wu HW, Chen J, Zhou WX. [Clinicopathologic features of gastric adenocarcinoma based on the revised Lauren's classification]. Zhonghua Bing Li Xue Za Zhi 2018; 47:486-491. [PMID: 29996311 DOI: 10.3760/cma.j.issn.0529-5807.2018.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the clinicopathologic features and prognosis of the subtypes in a consecutive series of gastric cancers (GC) patients basing on the revised Lauren's classification so as to better understand the biological behavior of GC. Methods: The surgically resected GC from Peking Union Medical College Hospital during 2003-2005 were reviewed for patients' age, gender, tumor size, location, Borrman classification, depth of invasion, lymph node metastasis, vascular invasion, and tumor growth pattern (Ming classification). Results: One hundred and sixty-six GC cases were enrolled and classified into four groups: intestinal GC (30, 18.1%), diffuse GC (56, 33.7%), solid GC (9, 5.4%), and mixed GC (71, 42.8%). Intestinal GC patients were older[ (63.2±11.3) years], with a male predominance, and were more frequently found in the antrum. Intestinal GC was the most common subtype for early GC, and tend to develop liver metastases. Diffuse GC patients were youngest [(52.2±12.7) years], with no gender difference, and were usually found in the antrum. Microscopically, diffuse GC were more likely infiltrative (51/56, 91.1%), and tended to metastasize by lymphatic pathway. Solid GC were usually large[ (6.4±2.2) cm], with a male predominance, and the most frequent site was the body/fundus. Solid GC were more likely to show expansile growth pattern with greater depth of invasion (8 of 9 cases were T3/4), but lower rate of lymphatic metastasis. Mixed GC also showed a male predominance, usually found in the antrum, and showed an infiltrative growth pattern (49/71, 69.0%). Though there was fewer T3/4 than solid and diffuse GC, mixed GC were more likely to show lymph nodes, vascular metastases and liver metastases (13/71, 18.3%). TNM staging, lymph nodes metastasis, lymphovascular invasion and revised Lauren's classification were four independent prognostic factors on multivariate analysis(P<0.05). The survival of patients with mixed GC were significantly worse than patients with other histological types. Conclusion: Revised Lauren's classification for GC has four distinct subgroups and can be used as independent prognostic factors.
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Affiliation(s)
- Y Li
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
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Li DM, Wu HW, Li JD, Xia WB, Jiang Y, Zhong DR. [Clinical and immunohistopathologic study of phosphaturic mesenchymal tumor]. Zhonghua Bing Li Xue Za Zhi 2018; 47:427-431. [PMID: 29886586 DOI: 10.3760/cma.j.issn.0529-5807.2018.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the clinicopathological characteristics and immunohistochemical phenotype of phosphaturic mesenchymal tumor (PMT) . Methods: The clinicopathological data and immunohistochemical profiles were obtained retrospectively from 206 patients diagnosed with PMT at Peking Union Medical College Hospital (PUMCH) during July 2008 to September 2017, with a review of literature. Results: The mean age of PMT patients was 42 years (range 13 to 70 years), with a male to female ratio of 1.1∶1.0. All patients presented with different degree of bone pain, muscle weakness, shorten of stature, thoracic deformity and pathological fractures, with hypophosphatemia and high serum ALP. Phosphatemia returned to normal within 1 week after operation in all cases underwent complete tumor resection. The duration of osteomalacia before resection (documented in 197 cases) ranged from 20 days to 40 years (average 5.7 years). The average blood phosphorus concentration raised from 0.49 mmol/L to 0.92 mmol/L before and after tumor resection (P<0.01), with 147 cases (84.0%, 147/175) returned to normal range within 2 weeks. The rate or blood phosphorus concentration recovery in 15 days after operation was 79.6% in average, displayed significant differences between patients with complete resection and those with partial resection (85.4% vs. 21.1%, P<0.01). PMT lesions mainly involved lower extremities (55.8%), followed by head and neck (29.1%). In immunohistochemical study, all cases were positive for vimentin (100.0%), while most cases were positive for NSE (96.3%), CD56 (94.2%), FGF23(88.4%), CD68 (88.3%), D2-40 (70.9%), CD34 (23.1%), SMA (55.5%), bcl-2 (59.8%) and CD99 (47.1%). The Ki-67 positive index of tumor varied from less than 2% (51.4%), 3% to 10% (41.3%) to >10% (7.2%). Conclusions: PMT mainly occurs in lower limbs or head and neck, with unique clinical characteristics and blood biochemical indexes. The tumor expresses a variety of immunohistochemical markers, indicating the potential of multi-directional differentiation. Clinical profile, blood biochemistry testing and immunohistochemical phenotype is helpful for diagnosis of PMT.
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Affiliation(s)
- D M Li
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Abstract
Objective: To study the clinicopathologic feature, diagnostic strategy and prognostic significance of primary carcinoid of the ovary (PCOTO). Methods: A series of 17 patients previously diagnosed as PCOTO at Department of Pathology, Peking Union Medical College Hospital during the period from 2002 to 2017 were evaluated with clinical data analysis, histopathology and immunohistochemistry, and the patients were followed up and the relevant literatures were reviewed. Results: The age of patients ranged from 24 to 64 years (mean, 42 years). Fourteen patients were found a pelvic mass for a health check-up, and only 3 patients presented with pain in the lower abdomen. The left ovary was involved initially in ten patients, and the right in seven. The major axis of the tumor ranged from 2 to 14 cm. The surface of these tumors was smooth. Seven of the tumors were solid-cystic, 6 were cystic and 4 were solid. Under light microscope, 6 cases were diagnosed as strumal carcinoid, 4 cases were insular carcinoid, 4 cases were trabecular carcinoid, 3 cases were insular and trabecular mixed type carcinoid and 1 case was mucinous carcinoid. The mitotic figures were no more than 1/10 HPF.There were 11 cases complicated with other ovarian tumors, including 10 cases with teratoma, and 1 case with mucinous cystic adenoma. The paraffin-embedded tissues of all cases showed immunoreactivity for NSE and Syn, and the positive propotion of CgA was 10/17. TTF1 was positive in thyroid follicles and negative in strumal carcinoid. The positive index of Ki-67 was no more than 2%. Follow-up of 13 to 188 months showed 16 patients without recurrence and 1 patients were loss to follow-up. Conclusions: PCOTO is very rare. Most of the patients are found with a mass during health check-up in unilateral ovary and without obvious clinical symptoms. Histologically, the tumor always exists with other ovarian tumors, including teratoma and mucinous cystic adenoma, with relatively good prognosis.
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Affiliation(s)
- R Zhu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
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Hung CS, Lee J, Chen YH, Huang CC, Wu VC, Wu HW, Chuang PY, Ho YL. Effect of Contract Compliance Rate to a Fourth-Generation Telehealth Program on the Risk of Hospitalization in Patients With Chronic Kidney Disease: Retrospective Cohort Study. J Med Internet Res 2018; 20:e23. [PMID: 29367185 PMCID: PMC5803530 DOI: 10.2196/jmir.8914] [Citation(s) in RCA: 7] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 11/10/2017] [Accepted: 12/18/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is prevalent in Taiwan and it is associated with high all-cause mortality. We have shown in a previous paper that a fourth-generation telehealth program is associated with lower all-cause mortality compared to usual care with a hazard ratio of 0.866 (95% CI 0.837-0.896). OBJECTIVE This study aimed to evaluate the effect of renal function status on hospitalization among patients receiving this program and to evaluate the relationship between contract compliance rate to the program and risk of hospitalization in patients with CKD. METHODS We retrospectively analyzed 715 patients receiving the telehealth care program. Contract compliance rate was defined as the percentage of days covered by the telehealth service before hospitalization. Patients were stratified into three groups according to renal function status: (1) normal renal function, (2) CKD, or (3) end-stage renal disease (ESRD) and on maintenance dialysis. The outcome measurements were first cardiovascular and all-cause hospitalizations. The association between contract compliance rate, renal function status, and hospitalization risk was analyzed with a Cox proportional hazards model with time-dependent covariates. RESULTS The median follow-up duration was 694 days (IQR 338-1163). Contract compliance rate had a triphasic relationship with cardiovascular and all-cause hospitalizations. Patients with low or very high contract compliance rates were associated with a higher risk of hospitalization. Patients with CKD or ESRD were also associated with a higher risk of hospitalization. Moreover, we observed a significant interaction between the effects of renal function status and contract compliance rate on the risk of hospitalization: patients with ESRD, who were on dialysis, had an increased risk of hospitalization at a lower contract compliance rate, compared with patients with normal renal function or CKD. CONCLUSIONS Our study showed that there was a triphasic relationship between contract compliance rate to the telehealth program and risk of hospitalization. Renal function status was associated with risk of hospitalization among these patients, and there was a significant interaction with contract compliance rate.
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Affiliation(s)
- Chi-Sheng Hung
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Jenkuang Lee
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Ying-Hsien Chen
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Ching-Chang Huang
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Vin-Cent Wu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Hui-Wen Wu
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Pao-Yu Chuang
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
| | - Yi-Lwun Ho
- Telehealth Center, National Taiwan University Hospital, Taipei, Taiwan
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Poque S, Wu HW, Huang CH, Cheng HW, Hu WC, Yang JY, Wang D, Yeh SD. Potyviral Gene-Silencing Suppressor HCPro Interacts with Salicylic Acid (SA)-Binding Protein 3 to Weaken SA-Mediated Defense Responses. Mol Plant Microbe Interact 2018; 31:86-100. [PMID: 29090655 DOI: 10.1094/mpmi-06-17-0128-fi] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The viral infection process is a battle between host defense response and pathogen antagonizing action. Several studies have established a tight link between the viral RNA silencing suppressor (RSS) and the repression of salicylic acid (SA)-mediated defense responses, nonetheless host factors directly linking an RSS and the SA pathway remains unidentified. From yeast two-hybrid analysis, we identified an interaction between the potyviral RSS helper-component proteinase (HCPro) and SA-binding protein SABP3. Co-localization and bimolecular fluorescence complementation analyses validated the direct in vivo interaction between Turnip mosaic virus (TuMV) HCPro and the Arabidopsis homologue of SABP3, AtCA1. Additionally, transient expression of TuMV HCPro demonstrated its ability to act as a negative regulator of AtCA1. When the plants of the AtCA1 knockout mutant line were inoculated with TuMV, our results indicated that AtCA1 is essential to restrict viral spreading and accumulation, induce SA accumulation, and trigger the SA pathway. Unexpectedly, the AtCA1 overexpression line also displayed a similar phenotype, suggesting that the constitutive expression of AtCA1 antagonizes the SA pathway. Taken together, our results depict AtCA1 as an essential regulator of SA defense responses. Moreover, the interaction of potyviral HCPro with this regulator compromises the SA pathway to weaken host defense responses and facilitate viral infection.
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Affiliation(s)
- Sylvain Poque
- 1 Department of Plant Pathology, National Chung-Hsing University, Taichung City 40227, Taiwan, R.O.C
| | - Hui-Wen Wu
- 2 Agricultural Biotechnology Center, National Chung-Hsing University
| | - Chung-Hao Huang
- 1 Department of Plant Pathology, National Chung-Hsing University, Taichung City 40227, Taiwan, R.O.C
| | - Hao-Wen Cheng
- 3 NCHU-UCD Plant and Food Biotechnology Center, National Chung-Hsing University
| | - Wen-Chi Hu
- 3 NCHU-UCD Plant and Food Biotechnology Center, National Chung-Hsing University
| | - Jun-Yi Yang
- 4 Institute of Biochemistry, National Chung-Hsing University; and
| | - David Wang
- 5 Department of Forestry, National Chung-Hsing University
| | - Shyi-Dong Yeh
- 1 Department of Plant Pathology, National Chung-Hsing University, Taichung City 40227, Taiwan, R.O.C
- 2 Agricultural Biotechnology Center, National Chung-Hsing University
- 3 NCHU-UCD Plant and Food Biotechnology Center, National Chung-Hsing University
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Lai S, Huang YQ, Liu AQ, Wu HW. Haemolysis during sodium dimercaptosulphonate therapy for Wilson's disease in G6PD-deficient patients: First report of two cases. J Clin Pharm Ther 2017; 42:783-785. [PMID: 28635014 DOI: 10.1111/jcpt.12576] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 05/18/2017] [Indexed: 01/05/2023]
Abstract
WHAT IS KNOWN AND OBJECTIVE Wilson's disease (WD) is an inherited disorder in which defective biliary excretion of copper leads to its accumulation. Sodium dimercaptosulphonate (DMPS) is used as the primary therapy in China. CASE DESCRIPTION We report two cases, with WD and G6PD deficiency, who developed haemolysis on treatment with DMPS, without any other known risk. After withdrawal of DMPS and administration of dexamethasone and packed red blood cells, the patients recovered. WHAT IS NEW AND CONCLUSION Clinicians should keep in mind haemolysis as a potentially life-threatening side effect of DMPS in patients with G6PD.
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Affiliation(s)
- S Lai
- Department of Pharmacy, the First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
- Department of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, China
| | - Y Q Huang
- Department of Neurology, the First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
| | - A Q Liu
- Department of Neurology, the First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
| | - H W Wu
- Department of Pharmacy, the First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
- Department of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, China
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29
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Yao HW, Wu HW, Liu YH. [From traditional population-based approach to individualized precision medicine: the interpretation of update on The AJCC Colorectal Cancer Staging System, Eighth Edition]. Zhonghua Wai Ke Za Zhi 2017; 55:24-27. [PMID: 28056249 DOI: 10.3760/cma.j.issn.0529-5815.2017.01.007] [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] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The eighth edition of cancer staging system published by AJCC will be implemented all over the world in January 1, 2018. In addition to strengthening the traditional TNM staging system, the introduction of new molecular markers, is a major advance in the eighth edition, and is expected to play a more valuable role in the"individualized" clinical practice. The most important update in the eighth edition of AJCC colorectal cancer staging system is"non-anatomic" prognostic and predictive evaluation system based on the molecular detection. The system is useful for better understanding the pathogenesis of colorectal cancer, and guide clinicians to provide individualized treatment for the patients even in the same stage of colorectal cancer.
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Affiliation(s)
- H W Yao
- *Department of Gastrointestinal Surgery, Branch Center of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
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Chen SF, Shen TJ, Lee HC, Wu HW, Zeng WT, Lu DJ, Lin HC. Preference of an insular flying fox for seed figs enhances seed dispersal of a dioecious species. Biotropica 2017. [DOI: 10.1111/btp.12449] [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] [Indexed: 11/29/2022]
Affiliation(s)
- Shiang-Fan Chen
- Center for General Education; National Taipei University; New Taipei City 23741 Taiwan
| | - Tsung-Jen Shen
- Institute of Statistics and Department of Applied Mathematics; National Chung Hsing University; Taichung 40227 Taiwan
| | - Han-Chun Lee
- Center for General Education; National Taipei University; New Taipei City 23741 Taiwan
| | - Hui-Wen Wu
- School of Forestry and Resource Conservation; National Taiwan University; Taipei 10617 Taiwan
| | - Wan-Ting Zeng
- Department of Ecological Humanities; Providence University; Taichung 43301 Taiwan
| | - Dau-Jye Lu
- School of Forestry and Resource Conservation; National Taiwan University; Taipei 10617 Taiwan
| | - Hua-Ching Lin
- Forestry Bureau, Council of Agriculture; Taipei 10050 Taiwan
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31
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Zhang MY, Yu YY, Wang SF, Zhang Q, Wu HW, Wei JY, Yang W, Li SY, Yang HJ. Cardiotoxicity evaluation of nine alkaloids from Rhizoma Coptis. Hum Exp Toxicol 2017; 37:185-195. [PMID: 29233041 DOI: 10.1177/0960327117695633] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Alkaloids derived from Rhizoma Coptis (RC) has been widely applied to clinical treatments in China. However, the toxicity of RC and the alkaloids from RC remained controversial. The research is designed to clarify the cardiotoxic compounds found in RC. METHODS In this study, the real-time cellular analysis cardio system and the high-content analysis were applied to monitor the function of cardiomyocytes (CMs) in the treatment of nine alkaloids in RC. Luciferase-coupled adenosine triphosphate (ATP) assay was used to detect cell viability. RESULTS The results showed that berberine, palmatine, berbamine, and oxyberberine were cardiotoxic, which resulted in arrhythmia and cardiac arrest on CMs in a time- and dose-dependent manner. Meanwhile, berbamine and oxyberberine caused shrinkage and detachment on CMs at 10 μM. Cytotoxicity was induced by these two compounds with decline in cell index and ATP depletion. Cardiotoxicity or cytotoxicity was not observed in the other five alkaloids within 10 μM. CONCLUSION For the first time, the cardiotoxicity of the nine alkaloids was evaluated to clarify the cardiotoxic components in RC. Furthermore, the experimental evidences were provided to support the safety of drug application.
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Affiliation(s)
- M Y Zhang
- 1 Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China.,2 Post-Doctoral Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Y Y Yu
- 3 School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - S F Wang
- 3 School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Q Zhang
- 3 School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - H W Wu
- 1 Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - J Y Wei
- 1 Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
| | - W Yang
- 4 ACEA Biosciences incorporated, Hangzhou, Zhejiang, China
| | - S Y Li
- 5 Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - H J Yang
- 1 Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
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Wu HW, Sun L, Li DM, Jing H, Xu B, Wang CT, Zhang L. [Endovascular repair of primary retrograde Stanford type A aortic dissection]. Zhonghua Wai Ke Za Zhi 2016; 54:761-765. [PMID: 27686640 DOI: 10.3760/cma.j.issn.0529-5815.2016.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To summarize the short- and mid-term results on endovascular repair of primary retrograde Stanford type A aortic dissection with an entry tear in distal aortic arch or descending aorta. Methods: Between December 2009 and December 2014, 21 male patients of primary retrograde Stanford type A aortic dissection with a mean age of (52±9) years received endovascular repair in Department of Cardiothoracic Surgery, Jinling Hospital. Among the 21 cases, 17 patients were presented as ascending aortic intramural hematoma, 4 patients as active blood flow in false lumen and partial thrombosis, 8 patients as ulcer on descending aorta combined intramural hematoma in descending aorta, and 13 patients as typical dissection changes. All patients received endovascular stent-graft repair successfully, with 15 cases in acute phase and 6 cases in chronic phase. Results: Cone stent was implanted in 13 cases, while straight stent in 8 cases, including 1 case of left common carotid-left subclavian artery bypass surgery and 1 case of restrictive bare-metal stent implantation. No perioperative stroke, paraplegia, stent fracture or displacement, limbs or abdominal organ ischemia or other severe complications occured, except for tracheotomy in 2 patients. Active blood flow in ascending aorta or aortic arch disappeared, and intramural hematoma started being absorbed on CT angiography images before discharge. All patients were alive during follow-up (6 to 72 months), and intramural hematoma in ascending aorta and aortic arch was absorbed thoroughly. Type Ⅰ endoleak and ulcer expansion were found in 1 patient, and type Ⅳ endoleak in distal stent was found in another one patient. Secondary ascending aortic dissection was found in 1 case two years later, which was cured by hybrid procedure with cardiopulmonary bypass. Conclusion: Endovascular repair of primary retrograde Stanford type A aortic dissection was safe and effective, which correlated with favorable short- and mid-term results.
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Affiliation(s)
- H W Wu
- Department of Cardiothoracic Surgery, Jinling Hospital, Clinical Medicine School of Nanjing University, Nanjing 210002, China
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Liu JP, Ning HB, Li K, Zhang MY, Li W, Mao CS, Wu HW, Kang Y, Shang J. [Clinical features of malignant tumor liver infiltration with liver failure as initial clinical manifestation: a single-center retrospective analysis of 9 cases]. Zhonghua Gan Zang Bing Za Zhi 2016; 24:687-691. [PMID: 27788726 DOI: 10.3760/cma.j.issn.1007-3418.2016.09.010] [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: 11/05/2022]
Abstract
Objective: To investigate the clinical features of patients with liver failure caused by tumor diffuse liver infiltration. Methods: A retrospective analysis was performed for the clinical data of 1008 patients with liver failure who were admitted to our hospital from July 2009 to December 2015. Among these patients, 9 had acute liver failure caused by liver metastasis of malignant tumor. Their clinical manifestations, laboratory markers, clinical progress, and outcome were observed, and the clinical features were summarized. Results: Such patients were manifested as liver enlargement and rapid clinical progression, and imaging examination showed stenosis due to external compression in the inferior vena cava. The patients might be easily misdiagnosed with Budd-Chiari syndrome and had a poor prognosis, with a mortality rate as high as 100%. Conclusion: As for the liver failure patients with unexplained liver enlargement, the possibility of liver metastasis of malignant tumors should be considered. Liver biopsy should be performed as early as possible before the deterioration of liver function, in order to facilitate the targeted therapy for the primary tumor.
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Affiliation(s)
- J P Liu
- Department of Infectious Disease, Henan Province People's Hospital, Zhengzhou 450003, China
| | - H B Ning
- Department of Infectious Disease, Henan Province People's Hospital, Zhengzhou 450003, China
| | - K Li
- Department of Infectious Disease, Henan Province People's Hospital, Zhengzhou 450003, China
| | - M Y Zhang
- Department of Pathology, Henan Province People's Hospital, Zhengzhou 450003, China
| | - W Li
- Department of Infectious Disease, Henan Province People's Hospital, Zhengzhou 450003, China
| | - C S Mao
- Department of Infectious Disease, Henan Province People's Hospital, Zhengzhou 450003, China
| | - H W Wu
- Department of Infectious Disease, Henan Province People's Hospital, Zhengzhou 450003, China
| | - Y Kang
- Department of Infectious Disease, Henan Province People's Hospital, Zhengzhou 450003, China
| | - J Shang
- Department of Infectious Disease, Henan Province People's Hospital, Zhengzhou 450003, China
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Liu J, Deng S, Wang H, Ye J, Wu HW, Sun HX, Chua NH. CURLY LEAF Regulates Gene Sets Coordinating Seed Size and Lipid Biosynthesis. Plant Physiol 2016; 171:424-36. [PMID: 26945048 PMCID: PMC4854673 DOI: 10.1104/pp.15.01335] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 03/03/2016] [Indexed: 05/05/2023]
Abstract
CURLY LEAF (CLF), a histone methyltransferase of Polycomb Repressive Complex 2 (PRC2) for trimethylation of histone H3 Lys 27 (H3K27me3), has been thought as a negative regulator controlling mainly postgermination growth in Arabidopsis (Arabidopsis thaliana). Approximately 14% to 29% of genic regions are decorated by H3K27me3 in the Arabidopsis genome; however, transcriptional repression activities of PRC2 on a majority of these regions remain unclear. Here, by analysis of transcriptome profiles, we found that approximately 11.6% genes in the Arabidopsis genome were repressed by CLF in various organs. Unexpectedly, approximately 54% of these genes were preferentially repressed in siliques. Further analyses of 118 transcriptome datasets uncovered a group of genes that was preferentially expressed and repressed by CLF in embryos at the mature-green stage. This observation suggests that CLF mediates a large-scale H3K27me3 programming/reprogramming event during embryonic development. Plants of clf-28 produced bigger and heavier seeds with higher oil content, larger oil bodies, and altered long-chain fatty acid composition compared with wild type. Around 46% of CLF-repressed genes were associated with H3K27me3 marks; moreover, we verified histone modification and transcriptional repression by CLF on regulatory genes. Our results suggest that CLF silences specific gene expression modules. Genes operating within a module have various molecular functions, but they cooperate to regulate a similar physiological function during embryo development.
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Affiliation(s)
- Jun Liu
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, New York 10065;National Key Facility for Crop Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; andTemasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 117604 Singapore
| | - Shulin Deng
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, New York 10065;National Key Facility for Crop Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; andTemasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 117604 Singapore
| | - Huan Wang
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, New York 10065;National Key Facility for Crop Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; andTemasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 117604 Singapore
| | - Jian Ye
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, New York 10065;National Key Facility for Crop Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; andTemasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 117604 Singapore
| | - Hui-Wen Wu
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, New York 10065;National Key Facility for Crop Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; andTemasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 117604 Singapore
| | - Hai-Xi Sun
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, New York 10065;National Key Facility for Crop Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; andTemasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 117604 Singapore
| | - Nam-Hai Chua
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, New York 10065;National Key Facility for Crop Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China; andTemasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, 117604 Singapore
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Niu L, Han DW, Xu RL, Han B, Zhou X, Wu HW, Li SH, Qu CX, Liu M. A High-sugar High-fat Diet Induced Metabolic Syndrome Shows some Symptoms of Alzheimer's Disease in Rats. J Nutr Health Aging 2016; 20:509-13. [PMID: 27102788 DOI: 10.1007/s12603-015-0601-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVES Cases of sporadic Alzheimer's disease (SAD) are the predominant form of the age-related dementia. New evidence suggests that metabolic syndrome (MS), a metabolic disorder, is an initiating factor of some SAD cases. A high-sugar high-fat diet could cause MS, we aimed to investigate whether it could directly lead to SAD. MEASUREMENTS The characteristic molecules of AD (hippocampus Aβ and Tau) were tested by using ELISA and western blotting to confirm the happening hallmarks of AD in brain. MS and inflammation related biochemical indicators were measured using immunological method. Proteins associated with the insulin resistance signal pathway (JNK, PI-3K, AKT, GSK-3β, GLUT3) were evaluated using western blotting method. The levels of reactive oxygen species (ROS) were measured by immunofluorescence method. RESULTS Expressions of hippocampus Aβ, phosphorylation-Tau (p-Tau), inflammatory factors and p-JNK, Gsk-3βwere higher in the model rats than those in the control rats and expressions of p-PI3K, p-AKT and GLUT3 were reversed. CONCLUSIONS The MS model animals, which can induce the characteristics symptoms of AD, and therefore it may be preliminarily considered that the AD pertains to the MS-related diseases.
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Affiliation(s)
- L Niu
- Dewu Han, Institute of Liver Disease, ShanXi Medical University The New South Road No. 56, Taiyuan ShanXi , 030001 China. , Tel: +86-0351-4135073, Fax number: +86-0351-4135073
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Wu HW, Wang F, Dong YQ, Shu FZ, Zhang K, Peng RW, Xiong X, Wang M. Cavity modes with optical orbital angular momentum in a metamaterial ring based on transformation optics. Opt Express 2015; 23:32087-32097. [PMID: 26699000 DOI: 10.1364/oe.23.032087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this work, we theoretically study the cavity modes with transverse orbital angular momentum in metamaterial ring based on transformation optics. The metamaterial ring is designed to transform the straight trajectory of light into the circulating one by enlarging the azimuthal angle, effectively presenting the modes with transverse orbital angular momentum. The simulation results confirm the theoretical predictions, which state that the transverse orbital angular momentum of the mode not only depends on the frequency of the incident light, but also depends on the transformation scale of the azimuthal angle. Because energy dissipation inevitably reduces the field amplitude of the modes, the confined electromagnetic energy and the quality factor of the modes inside the ring are also studied in order to evaluate the stability of those cavity modes. The results show that the metamaterial ring can effectively confine light with a high quality factor and maintain steady modes with the orbital angular momentum, even if the dimension of the ring is much smaller than the wavelength of the incident light. This technique for exploiting the modes with optical transverse orbital angular momentum may provides a unique platform for applications related to micromanipulation.
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Wang H, Niu QW, Wu HW, Liu J, Ye J, Yu N, Chua NH. Analysis of non-coding transcriptome in rice and maize uncovers roles of conserved lncRNAs associated with agriculture traits. Plant J 2015; 84:404-16. [PMID: 26387578 DOI: 10.1111/tpj.13018] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 08/26/2015] [Indexed: 05/07/2023]
Abstract
Long non-coding RNAs (lncRNAs) have recently been found to widely exist in eukaryotes and play important roles in key biological processes. To extend our knowledge of lncRNAs in crop plants we performed both non-directional and strand-specific RNA-sequencing experiments to profile non-coding transcriptomes of various rice and maize organs at different developmental stages. Analysis of more than 3 billion reads identified 22 334 long intergenic non-coding RNAs (lincRNAs) and 6673 pairs of sense and natural antisense transcript (NAT). Many lincRNA genes were associated with epigenetic marks. Expression of rice lincRNA genes was significantly correlated with that of nearby protein-coding genes. A set of NAT genes also showed expression correlation with their sense genes. More than 200 rice lincRNA genes had homologous non-coding sequences in the maize genome. Much more lincRNA and NAT genes were derived from conserved genomic regions between the two cereals presenting positional conservation. Protein-coding genes flanking or having a sense-antisense relationship to these conserved lncRNA genes were mainly involved in development and stress responses, suggesting that the associated lncRNAs might have similar functions. Integrating previous genome-wide association studies (GWAS), we found that hundreds of lincRNAs contain trait-associated SNPs (single nucleotide polymorphisms [SNPs]) suggesting their putative contributions to developmental and agriculture traits.
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Affiliation(s)
- Huan Wang
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, NY, 10065, USA
| | - Qi-Wen Niu
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, NY, 10065, USA
| | - Hui-Wen Wu
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, NY, 10065, USA
| | - Jun Liu
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, NY, 10065, USA
| | - Jian Ye
- Temasek Life Sciences Laboratory, 1 Research Link, National University of Singapore, Singapore City, 117604, Singapore
| | - Niu Yu
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, NY, 10065, USA
| | - Nam-Hai Chua
- Laboratory of Plant Molecular Biology, The Rockefeller University, 1230 York Avenue, New York, NY, 10065, USA
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Li H, Zhu YH, Chi C, Wu HW, Guo J. Role of cytoskeleton in axonal regeneration after neurodegenerative diseases and CNS injury. Rev Neurosci 2015; 25:527-42. [PMID: 24622784 DOI: 10.1515/revneuro-2013-0062] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 02/09/2014] [Indexed: 11/15/2022]
Abstract
With the occurrence of neurodegenerative diseases, such as Alzheimer's and Parkinson's disease, a number of well-functioning neurons need to be developed to make up for the loss of neurons and to restore the brain functions. Unfortunately, because the axons cannot regenerate well, brain function cannot be well compensated for even with the increasing number of newborn neurons, let alone the reformation of neural network. Cytoskeletal proteins play a crucial role in regeneration of axon. In this review, we summarize some cytoskeletal proteins, for instance, actin and actin-binding proteins, as well as tubulin and microtubule-associated proteins, and more importantly, their roles in the regulation of axonal regeneration in the brain. It will provide new opportunities for axonal regeneration after brain damage and will even bring new treatments to patients with neurodegenerative diseases.
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Huang CH, Hsiao WR, Huang CW, Chen KC, Lin SS, Chen TC, Raja JAJ, Wu HW, Yeh SD. Two Novel Motifs of Watermelon Silver Mottle Virus NSs Protein Are Responsible for RNA Silencing Suppression and Pathogenicity. PLoS One 2015; 10:e0126161. [PMID: 25993336 PMCID: PMC4439075 DOI: 10.1371/journal.pone.0126161] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 03/30/2015] [Indexed: 12/02/2022] Open
Abstract
The NSs protein of Watermelon silver mottle virus (WSMoV) is the RNA silencing suppressor and pathogenicity determinant. In this study, serial deletion and point-mutation mutagenesis of conserved regions (CR) of NSs protein were performed, and the silencing suppression function was analyzed through agroinfiltration in Nicotiana benthamiana plants. We found two amino acid (aa) residues, H113 and Y398, are novel functional residues for RNA silencing suppression. Our further analyses demonstrated that H113 at the common epitope (CE) ((109)KFTMHNQ(117)), which is highly conserved in Asia type tospoviruses, and the benzene ring of Y398 at the C-terminal β-sheet motif ((397)IYFL(400)) affect NSs mRNA stability and protein stability, respectively, and are thus critical for NSs RNA silencing suppression. Additionally, protein expression of other six deleted (ΔCR1-ΔCR6) and five point-mutated (Y15A, Y27A, G180A, R181A and R212A) mutants were hampered and their silencing suppression ability was abolished. The accumulation of the mutant mRNAs and proteins, except Y398A, could be rescued or enhanced by co-infiltration with potyviral suppressor HC-Pro. When assayed with the attenuated Zucchini yellow mosaic virus vector in squash plants, the recombinants carrying individual seven point-mutated NSs proteins displayed symptoms much milder than the recombinant carrying the wild type NSs protein, suggesting that these aa residues also affect viral pathogenicity by suppressing the host silencing mechanism.
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Affiliation(s)
- Chung-Hao Huang
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Weng-Rong Hsiao
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Ching-Wen Huang
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Kuan-Chun Chen
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Shih-Shun Lin
- Institute of Biotechnology, National Taiwan University, Taipei 106, Taiwan
| | - Tsung-Chi Chen
- Department of Biotechnology, Asia University, Wufeng, Taichung, 41354, Taiwan
| | - Joseph A. J. Raja
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
- NCHU-UCD Plant and Food Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan
| | - Hui-Wen Wu
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Shyi-Dong Yeh
- Department of Plant Pathology, National Chung Hsing University, Taichung, 40227, Taiwan
- NCHU-UCD Plant and Food Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan
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Gao L, Tang W, Ding Z, Wang D, Qi X, Wu H, Guo J. Protein-Binding Function of RNA-Dependent Protein Kinase Promotes Proliferation through TRAF2/RIP1/NF-κB/c-Myc Pathway in Pancreatic β cells. Mol Med 2015; 21:154-66. [PMID: 25715336 DOI: 10.2119/molmed.2014.00235] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 02/18/2015] [Indexed: 12/29/2022] Open
Abstract
Double-stranded RNA-dependent protein kinase (PKR), an intracellular pathogen recognition receptor, is involved both in insulin resistance in peripheral tissues and in downregulation of pancreatic β-cell function in a kinase-dependent manner, indicating PKR as a core component in the progression of type 2 diabetes. PKR also acts as an adaptor protein via its protein-binding domain. Here, the PKR protein-binding function promoted β-cell proliferation without its kinase activity, which is associated with enhanced physical interaction with tumor necrosis factor receptor-associated factor 2 (TRAF2) and TRAF6. In addition, the transcription of the nuclear factor kappa-light-chain-enhancer of activated B cell (NF-κB)-dependent survival gene c-Myc was upregulated significantly and is necessary for proliferation. Upregulation of the PKR protein-binding function induced the NF-κB pathway, as observed by dose-dependent degradation of IκBα, induced nuclear translocation of p65 and elevated NF-κB-dependent reporter gene expression. NF-κB-dependent reporter activity and β-cell proliferation both were suppressed by TRAF2-siRNA, but not by TRAF6-siRNA. TRAF2-siRNA blocked the ubiquitination of receptor-interacting serine/threonine-protein kinase 1 (RIP1) induced by PKR protein binding. Furthermore, RIP1-siRNA inhibited β-cell proliferation. Proinflammatory cytokines (TNFα) and glucolipitoxicity also promoted the physical interaction of PKR with TRAF2. Collectively, these data indicate a pivotal role for PKR's protein-binding function on the proliferation of pancreatic β cells through TRAF2/RIP1/NF-κB/c-Myc pathways. Therapeutic opportunities for type 2 diabetes may arise when its kinase catalytic function, but not its protein-binding function, is downregulated.
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Affiliation(s)
- Lili Gao
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, People's Republic of China
| | - Wei Tang
- Department of Endocrinology, The Affiliated Jiangyin Hospital of Southeast University Medical College, Jiangyin, People's Republic of China
| | - ZhengZheng Ding
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, People's Republic of China
| | - DingYu Wang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, People's Republic of China
| | - XiaoQiang Qi
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, People's Republic of China
| | - HuiWen Wu
- Laboratory Center for Basic Medical Sciences, Nanjing Medical University, Nanjing, People's Republic of China
| | - Jun Guo
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, People's Republic of China
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Zhou XQ, Huang SY, Zhang DS, Zhang SZ, Li WG, Chen ZW, Wu HW. Effects of 5-aza-2'deoxycytidine on RECK gene expression and tumor invasion in salivary adenoid cystic carcinoma. ACTA ACUST UNITED AC 2014; 48:254-60. [PMID: 25517920 PMCID: PMC4381946 DOI: 10.1590/1414-431x20144102] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 10/13/2014] [Indexed: 11/22/2022]
Abstract
Reversion-inducing cysteine-rich protein with kazal motifs (RECK), a
novel tumor suppressor gene that negatively regulates matrix metalloproteinases
(MMPs), is expressed in various normal human tissues but downregulated in several
types of human tumors. The molecular mechanism for this downregulation and its
biological significance in salivary adenoid cystic carcinoma (SACC) are unclear. In
the present study, we investigated the effects of a DNA methyltransferase (DNMT)
inhibitor, 5-aza-2′deoxycytidine (5-aza-dC), on the methylation status of the
RECK gene and tumor invasion in SACC cell lines.
Methylation-specific PCR (MSP), Western blot analysis, and quantitative real-time PCR
were used to investigate the methylation status of the RECK gene and
expression of RECK mRNA and protein in SACC cell lines. The invasive ability of SACC
cells was examined by the Transwell migration assay. Promoter methylation was only
found in the ACC-M cell line. Treatment of ACC-M cells with 5-aza-dC partially
reversed the hypermethylation status of the RECK gene and
significantly enhanced the expression of mRNA and protein, and 5-aza-dC significantly
suppressed ACC-M cell invasive ability. Our findings showed that 5-aza-dC inhibited
cancer cell invasion through the reversal of RECK gene
hypermethylation, which might be a promising chemotherapy approach in SACC
treatment.
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Affiliation(s)
- X Q Zhou
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Shandong University, Jinan, China
| | - S Y Huang
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital, Affiliated to Shandong University, Jinan, China
| | - D S Zhang
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Shandong University, Jinan, China
| | - S Z Zhang
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital, Affiliated to Shandong University, Jinan, China
| | - W G Li
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital, Affiliated to Shandong University, Jinan, China
| | - Z W Chen
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital, Affiliated to Shandong University, Jinan, China
| | - H W Wu
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital, Affiliated to Shandong University, Jinan, China
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Kung YJ, Lin PC, Yeh SD, Hong SF, Chua NH, Liu LY, Lin CP, Huang YH, Wu HW, Chen CC, Lin SS. Genetic analyses of the FRNK motif function of Turnip mosaic virus uncover multiple and potentially interactive pathways of cross-protection. Mol Plant Microbe Interact 2014; 27:944-55. [PMID: 24804808 DOI: 10.1094/mpmi-04-14-0116-r] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Cross-protection triggered by a mild strain of virus acts as a prophylaxis to prevent subsequent infections by related viruses in plants; however, the underling mechanisms are not fully understood. Through mutagenesis, we isolated a mutant strain of Turnip mosaic virus (TuMV), named Tu-GK, that contains an Arg182Lys substitution in helper component-proteinase (HC-Pro(K)) that confers complete cross-protection against infection by a severe strain of TuMV in Nicotiana benthamiana, Arabidopsis thaliana Col-0, and the Arabidopsis dcl2-4/dcl4-1 double mutant defective in DICER-like ribonuclease (DCL)2/DCL4-mediated silencing. Our analyses showed that HC-Pro(K) loses the ability to interfere with microRNA pathways, although it retains a partial capability for RNA silencing suppression triggered by DCL. We further showed that Tu-GK infection triggers strong salicylic acid (SA)-dependent and SA-independent innate immunity responses. Our data suggest that DCL2/4-dependent and -independent RNA silencing pathways are involved, and may crosstalk with basal innate immunity pathways, in host defense and in cross-protection.
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Wu HW, Ren LF, Zhou X, Han DW. A high-fructose diet induces hippocampal insulin resistance and exacerbates memory deficits in male Sprague-Dawley rats. Nutr Neurosci 2014; 18:323-8. [DOI: 10.1179/1476830514y.0000000133] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Peng JC, Chen TC, Raja JAJ, Yang CF, Chien WC, Lin CH, Liu FL, Wu HW, Yeh SD. Broad-spectrum transgenic resistance against distinct tospovirus species at the genus level. PLoS One 2014; 9:e96073. [PMID: 24811071 PMCID: PMC4014477 DOI: 10.1371/journal.pone.0096073] [Citation(s) in RCA: 24] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 04/02/2014] [Indexed: 11/18/2022] Open
Abstract
Thrips-borne tospoviruses cause severe damage to crops worldwide. In this investigation, tobacco lines transgenic for individual WLm constructs containing the conserved motifs of the L RNA-encoded RNA-dependent RNA polymerase (L) gene of Watermelon silver mottle virus (WSMoV) were generated by Agrobacterium-mediated transformation. The WLm constructs included: (i) translatable WLm in a sense orientation; (ii) untranslatable WLmt with two stop codons; (iii) untranslatable WLmts with stop codons and a frame-shift; (iv) untranslatable antisense WLmA; and (v) WLmhp with an untranslatable inverted repeat of WLm containing the tospoviral S RNA 3'-terminal consensus sequence (5'-ATTGCTCT-3') and an NcoI site as a linker to generate a double-stranded hairpin transcript. A total of 46.7-70.0% transgenic tobacco lines derived from individual constructs showed resistance to the homologous WSMoV; 35.7-100% plants of these different WSMoV-resistant lines exhibited broad-spectrum resistance against four other serologically unrelated tospoviruses Tomato spotted wilt virus, Groundnut yellow spot virus, Impatiens necrotic spot virus and Groundnut chlorotic fan-spot virus. The selected transgenic tobacco lines also exhibited broad-spectrum resistance against five additional tospoviruses from WSMoV and Iris yellow spot virus clades, but not against RNA viruses from other genera. Northern analyses indicated that the broad-spectrum resistance is mediated by RNA silencing. To validate the L conserved region resistance in vegetable crops, the constructs were also used to generate transgenic tomato lines, which also showed effective resistance against WSMoV and other tospoviruses. Thus, our approach of using the conserved motifs of tospoviral L gene as a transgene generates broad-spectrum resistance against tospoviruses at the genus level.
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Affiliation(s)
- Jui-Chu Peng
- Department of Plant Pathology, National Chung Hsing University, Taichung, Taiwan
- Division of Crop Environment, Tainan District Agricultural Research and Extension Station, COA, Tainan, Taiwan
| | - Tsung-Chi Chen
- Department of Plant Pathology, National Chung Hsing University, Taichung, Taiwan
- Department of Biotechnology, Asia University, Wufeng, Taichung, Taiwan
| | - Joseph A. J. Raja
- Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
- NCHU-UCD Plant and Food Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Ching-Fu Yang
- Department of Plant Pathology, National Chung Hsing University, Taichung, Taiwan
- Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Wan-Chu Chien
- NCHU-UCD Plant and Food Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Chen-Hsuan Lin
- Department of Plant Pathology, National Chung Hsing University, Taichung, Taiwan
| | - Fang-Lin Liu
- Department of Plant Pathology, National Chung Hsing University, Taichung, Taiwan
| | - Hui-Wen Wu
- Department of Plant Pathology, National Chung Hsing University, Taichung, Taiwan
| | - Shyi-Dong Yeh
- Department of Plant Pathology, National Chung Hsing University, Taichung, Taiwan
- Agricultural Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
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Wang Y, Wu H, Gao L, Chen S, Gu L, Ding Z, Guo J. Elevated toll-like receptor 3 inhibits pancreatic β-cell proliferation through G1 phase cell cycle arrest. Mol Cell Endocrinol 2013; 377:112-22. [PMID: 23850521 DOI: 10.1016/j.mce.2013.07.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2012] [Revised: 06/30/2013] [Accepted: 07/02/2013] [Indexed: 12/11/2022]
Abstract
Activation of the innate and acquired immune systems plays an important role in chronic inflammatory diseases and conditions such as obesity, insulin resistance, type 2 diabetes mellitus and atherosclerosis, with additional roles in regulation of cell proliferation and survival. Here, we provide evidence that TLR3 can respond to nutrient signals and induce loss of β-cell mass through induction of G1 cycle arrest. Activation of TLR3 by polyinosinic-polycytidylic acid [poly (I:C)] was shown to trigger the decline of cyclin D1/2 protein levels in pancreatic β-cell lines, which could be reversed by the proteasome inhibitor MG132. P38 was also found to interfere with this degradation which may be associated with G1 cycle arrest. Moreover, inhibitory effects of TLR3 on β-cell growth were supported by gene silencing of TRIF, which could inhibit p38 activity in response to poly (I:C) stimuli. These results support a role for TLR3 in β-cell mass loss in metabolic surplus and raise the possibility that TRIF/p38 signaling may be involved in G1 phase cycle arrest through ubiquitin/proteasome-dependent degradation of cyclin D.
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Affiliation(s)
- Yi Wang
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing 210029, PR China
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Gu L, Huang B, Shen W, Gao L, Ding Z, Wu H, Guo J. Early activation of nSMase2/ceramide pathway in astrocytes is involved in ischemia-associated neuronal damage via inflammation in rat hippocampi. J Neuroinflammation 2013; 10:109. [PMID: 24007266 PMCID: PMC3844623 DOI: 10.1186/1742-2094-10-109] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Accepted: 08/22/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Ceramide accumulation is considered a contributing factor to neuronal dysfunction and damage. However, the underlying mechanisms that occur following ischemic insult are still unclear. METHODS In the present study, we established cerebral ischemia models using four-vessel occlusion and oxygen-glucose deprivation methods. The hippocampus neural cells were subjected to immunohistochemistry and immunofluorescence staining for ceramide and neutral sphingomyelinase 2 (nSMase2) levels; immunoprecipitation and immunoblot analysis for nSMase2, receptor for activated C kinase 1 (RACK1), embryonic ectoderm development (EED), p38 mitogen-activated protein kinase (p38MAPK) and phosphorylated p38MAPK expression; SMase assay for nSMase and acid sphingomyelinase (aSMase) activity; real-time reverse transcription polymerase chain reaction for cytokine expression; and Nissl, microtubule-associated protein 2 and terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling staining. RESULTS We found considerable production of ceramide in astrocytes, but not in neurons, during early cerebral ischemia. This was accompanied by the induction of nSMase (but not aSMase) activity in the rat hippocampi. The inhibition of nSMase2 activity effectively reduced ceramide accumulation in astrocytes and alleviated neuronal damage to some extent. Meanwhile, the expression levels of proinflammatory cytokines, including tumor necrosis factor α (TNF-α), interleukin 1β (IL-1β) and IL-6, were found to be upregulated, which may have played an import role in neuronal damage mediated by the nSMase2/ceramide pathway. Although enhanced binding of nSMase2 with RACK1 and EED were also observed after cerebral ischemia, nSMase2 activity was not blocked by the TNF-α receptor inhibitor through RACK1/EED signaling. p38MAPK, but not protein kinase Cζ or protein phosphatase 2B, was able to induce nSMase2 activation after ischemia. p38MAPK can be induced by A2B adenosine receptor (A2BAR) activity. CONCLUSIONS These results indicate that the inhibition of ceramide production in astrocytes by targeting A2BAR/p38MAPK/nSMase2 signaling may represent a viable approach for attenuating inflammatory responses and neuronal damage after cerebral ischemia.
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Affiliation(s)
- LiZe Gu
- Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing 210029, People's Republic of China.
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Huang Z, Liu Y, Zhu J, Wu H, Guo J. Involvement of the dual-specificity phosphatase M3/6 in c-Jun N-terminal kinase inactivation following cerebral ischemia in the rat hippocampus. Int J Neurosci 2013; 123:802-9. [DOI: 10.3109/00207454.2013.803477] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Zhu J, Shen W, Gao L, Gu H, Shen S, Wang Y, Wu H, Guo J. PI3K/Akt-independent negative regulation of JNK signaling by MKP-7 after cerebral ischemia in rat hippocampus. BMC Neurosci 2013; 14:1. [PMID: 23280045 PMCID: PMC3583678 DOI: 10.1186/1471-2202-14-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Accepted: 12/26/2012] [Indexed: 01/26/2023] Open
Abstract
Background The inactivation of c-Jun N-terminal kinase (JNK) is associated with anti-apoptotic and anti-inflammatory effects in cerebral ischemia, which can be induced by an imbalance between upstream phosphatases and kinases. Result Mitogen-activated protein kinase phosphatase 7 (MKP-7) was upregulated significantly at 4 h of reperfusion postischemia in rat hippocampi. By administration of cycloheximide or siRNA against mitogen-activated protein kinase phosphatase 7 (MKP-7) in a rat model of ischemia/reperfusion, an obvious enhancement of JNK activity was observed in 4 h of reperfusion following ischemia, suggesting MKP-7 was involved in JNK inactivation after ischemia. The subcellular localization of MKP-7 altered after ischemia, and the inhibition of MKP-7 nuclear export by Leptomycin B up-regulated JNK activity. Although PI3K/Akt inhibition could block downregulation of JNK activity through SEK1 and MKK-7 activation, PI3K/Akt activity was not associated with the regulation of JNK by MKP-7. Conclusions MKP-7, independently of PI3K/Akt pathway, played a key role in downregulation of JNK activity after ischemia in the rat hippocampus, and the export of MKP-7 from the nucleus was involved in downregulation of cytoplasmic JNK activity in response to ischemic stimuli.
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Affiliation(s)
- JianXi Zhu
- Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, People's Republic of China
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Wu HW, Yun KM, Han DW, Xu RL, Zhao YC. Effects of glycine on phagocytosis and secretion by Kupffer cells in vitro. World J Gastroenterol 2012; 18:2576-81. [PMID: 22654457 PMCID: PMC3360458 DOI: 10.3748/wjg.v18.i20.2576] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 02/10/2012] [Accepted: 03/10/2012] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effects and mechanisms of action of glycine on phagocytosis and tumor necrosis factor (TNF)-α secretion by Kupffer cells in vitro.
METHODS: Kupffer cells were isolated from normal rats by collagenase digestion and Percoll density gradient differential centrifugation. After culture for 24 h, Kupffer cells were incubated in fresh Dulbecco's Modification of Eagle’s Medium containing glycine (G1: 1 mmol/L, G2: 10 mmol/L, G3: 100 mmol/L and G4: 300 mmol/L) for 3 h, then used to measure phagocytosis by a bead test, TNF-α secretion after lipopolysaccharide stimulation by radioactive immunoassay, and microfilament and microtubule expression by staining with phalloidin-fluorescein isothiocyanate (FITC) or a monoclonal anti-α tubulin-FITC antibody, respectively, and evaluated under a ultraviolet fluorescence microscope.
RESULTS: Glycine decreased the phagocytosis of Kupffer cells at both 30 min and 60 min (P < 0.01, P < 0.05). The numbers of beads phagocytosed by Kupffer cells in 30 min were 16.9 ± 4.0 (control), 9.6 ± 4.1 (G1), 12.1 ± 5.7 (G2), 8.1 ± 3.2 (G3) and 7.5 ± 2.0 (G4), and were 22.5 ± 7.9 (control), 20.1 ± 5.8 (G1), 19.3 ± 4.8 (G2), 13.5 ± 4.7 (G3) and 9.2 ± 3.1 (G4) after 60 min. TNF-α secretion by Kupffer cells in G1 (0.19 ± 0.03), G2 (0.16 ± 0.04), G3 (0.14 ± 0.03) and G4 (0.13 ± 0.05) was significantly less than that in controls (0.26 ± 0.03, P < 0.01), and the decrease in secretion was dose-dependent (P < 0.05). Microfilaments of Kupffer cells in G2, G3 and G4 groups were arranged in a disorderly manner. The fluorescence densities of microtubules in G1 (53.4 ± 10.5), G2 (54.1 ± 14.6), G3 (64.9 ± 12.1) and G4 (52.1 ± 14.2) were all lower than those in the controls (102.2 ± 23.7, P < 0.01), but the decrease in microtubule fluorescence density was not dose-dependant.
CONCLUSION: Glycine can decrease the phagocytosis and secretion by Kupffer cells in vitro, which may be related to the changes in the expression of microfilaments and microtubules induced by Kupffer cells.
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Yu TA, Chiang CH, Wu HW, Li CM, Yang CF, Chen JH, Chen YW, Yeh SD. Generation of transgenic watermelon resistant to Zucchini yellow mosaic virus and Papaya ringspot virus type W. Plant Cell Rep 2011; 30:359-371. [PMID: 21079966 DOI: 10.1007/s00299-010-0951-4] [Citation(s) in RCA: 12] [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] [Subscribe] [Scholar Register] [Received: 06/14/2010] [Revised: 10/16/2010] [Accepted: 10/29/2010] [Indexed: 05/28/2023]
Abstract
Zucchini yellow mosaic virus (ZYMV) and Papaya ringspot virus type W (PRSV W) are major limiting factors for production of watermelon worldwide. For the effective control of these two viruses by transgenic resistance, an untranslatable chimeric construct containing truncated ZYMV coat protein (CP) and PRSV W CP genes was transferred to commercial watermelon cultivars by Agrobacterium-mediated transformation. Using our protocol, a total of 27 putative transgenic lines were obtained from three cultivars of 'Feeling' (23 lines), 'China baby' (3 lines), and 'Quality' (1 line). PCR and Southern blot analyses confirmed that the chimeric construct was incorporated into the genomic DNA of the transformants. Greenhouse evaluation of the selected ten transgenic lines of 'Feeling' cultivar revealed that two immune lines conferred complete resistance to ZYMV and PRSV W, from which virus accumulation were not detected by Western blotting 4 weeks after inoculation. The transgenic transcript was not detected, but small interfering RNA (siRNA) was readily detected from the two immune lines and T(1) progeny of line ZW 10 before inoculation, indicating that RNA-mediated post-transcriptional gene silencing (PTGS) is the underlying mechanism for the double-virus resistance. The segregation ratio of T(1) progeny of the immune line ZW10 indicated that the single inserted transgene is nuclearly inherited and associated with the phenotype of double-virus resistance as a dominant trait. The transgenic lines derived from the commercial watermelon cultivars have great potential for control of the two important viruses and can be implemented directly without further breeding.
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Affiliation(s)
- Tsong-Ann Yu
- Department of Molecular Biotechnology, Da Yeh University, Changhua, Taiwan
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