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Shen Y, Yang T, Zeng H, Meng W, Deng X, Wei M, Wang Z. Low anterior resection syndrome and quality of life after intersphincteric resection for rectal cancer: a propensity score-matched study. Tech Coloproctol 2023; 27:1307-1317. [PMID: 37804461 DOI: 10.1007/s10151-023-02848-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 07/26/2023] [Indexed: 10/09/2023]
Abstract
PURPOSE Our aim was to perform a propensity score-matched study to compare the long-term functional outcomes and quality of life following intersphincteric resection vs. low anterior resection (LAR) with very low anastomosis. METHODS Patients who underwent intersphincteric resection or low anterior resection with low anastomosis (≤ 4 cm from the anal verge) for rectal cancer between January 2017 and June 2020 were retrospectively included. A propensity score-matching process was performed. Functional outcomes and quality of life were assessed using the European Quality of Life 5 Dimensions 3 Level Version (EQ-5D-3L), EORC-QLQ C30, EORC-QLQ CR29, Low Anterior Resection Syndrome (LARS), Wexner, and International Prostate Symptom Score (IPSS) questionnaires. The primary outcome was the presence of LARS at least 12 months after surgery. The second outcome was the postoperative quality of life of included patients. RESULTS After propensity matching, 128 patients were included, including 58 males and 70 females with a median age of 59.5. Patients in the intersphincteric resection group showed a higher incidence of incontinence to flatus (32.8% versus 14.0%, p = 0.043) and stools (42.2% versus 21.9%, p = 0.046), pain/discomfort (25.0% versus 7.8%, p = 0.001), and bowel dysfunction, while the LARS scores (15.0 versus 13.2, p = 0.461) and major LARS rates (26.6% versus 14.1%, p = 0.078) were comparable in both groups. CONCLUSION ISR leads to increased bowel incontinence rate and increased anal pain, without affecting the grade of low anterior resection syndrome, fecal urgency, and clustering. LAR might be the preferred sphincteric-preserving approach when negative resection margins and a safe anastomosis are guaranteed. Patients should be fully informed about potential functional impairment after sphincter-preservation procedures.
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Affiliation(s)
- Y Shen
- Department of General Surgery, Colorectal Cancer Center, West China Hospital, Sichuan University, Guo Xue Xiang 37#, Chengdu, Sichuan Province, China
| | - T Yang
- Department of General Surgery, Colorectal Cancer Center, West China Hospital, Sichuan University, Guo Xue Xiang 37#, Chengdu, Sichuan Province, China
| | - H Zeng
- Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - W Meng
- Department of General Surgery, Colorectal Cancer Center, West China Hospital, Sichuan University, Guo Xue Xiang 37#, Chengdu, Sichuan Province, China
| | - X Deng
- Department of General Surgery, Colorectal Cancer Center, West China Hospital, Sichuan University, Guo Xue Xiang 37#, Chengdu, Sichuan Province, China.
| | - M Wei
- Department of General Surgery, Colorectal Cancer Center, West China Hospital, Sichuan University, Guo Xue Xiang 37#, Chengdu, Sichuan Province, China.
| | - Z Wang
- Department of General Surgery, Colorectal Cancer Center, West China Hospital, Sichuan University, Guo Xue Xiang 37#, Chengdu, Sichuan Province, China.
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Jia KY, Chen F, Peng Y, Wei JF, He S, Wei X, Tang H, Meng W, Feng Y, Chen M. Multidetector CT-derived tricuspid annulus measurements predict tricuspid regurgitation reduction after transcatheter aortic valve replacement. Clin Radiol 2023; 78:779-788. [PMID: 37574402 DOI: 10.1016/j.crad.2023.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/13/2023] [Accepted: 07/10/2023] [Indexed: 08/15/2023]
Abstract
AIM To use multidetector row computed tomography (MDCT)-derived tricuspid annulus (TA) measurements to identify predictors for tricuspid regurgitation (TR) reduction after transcatheter aortic valve replacement (TAVR), and to investigate the impact of TR change on prognosis. MATERIALS AND METHODS A retrospective, single-centre study was conducted on consecutive patients who underwent TAVR with concomitant baseline mild or more severe TR from April 2012 to April 2022. TA parameters were measured using MDCT. RESULTS The study comprised 266 patients (mean age 74.2 ± 7.6 years, 147 men) and 45.1% had more than one grade of TR reduction at follow-up. Independent predictors of TR reduction at follow-up were distance between TA centroid and antero-septal commissure (odd ratio [OR] 0.776; 95% confidence interval [CI]: 0.672-0.896, p=0.001), baseline TR of moderate or worse (OR 4.599; 95% CI: 2.193-9.648, p<0.001), systolic pulmonary artery pressure (OR 1.018; 95% CI: 1.002-1.035, p=0.027), age (OR 0.955; 95% CI: 0.920-0.993, p=0.019), and pre-existing atrial fibrillation (OR 0.209; 95% CI: 0.101-0.433, p<0.001). Patients without TR reduction had higher rates of rehospitalisation (hazard ratio [HR] 0.642; 95% CI: 0.413-0.998, p=0.049). CONCLUSIONS The MDCT-derived TA parameter was predictive of TR reduction after TAVR. Persistent TR after TAVR was associated with higher rates of rehospitalisation.
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Affiliation(s)
- K-Y Jia
- Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Road, 610041 Chengdu, China
| | - F Chen
- Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Road, 610041 Chengdu, China
| | - Y Peng
- Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Road, 610041 Chengdu, China
| | - J-F Wei
- Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Road, 610041 Chengdu, China
| | - S He
- Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Road, 610041 Chengdu, China
| | - X Wei
- Department of Cardiology, Section of Cardiac Ultrasound, West China Hospital, Sichuan University, 37 Guoxue Road, 610041 Chengdu, China
| | - H Tang
- Department of Cardiology, Section of Cardiac Ultrasound, West China Hospital, Sichuan University, 37 Guoxue Road, 610041 Chengdu, China
| | - W Meng
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, 37 Guoxue Road, 610041 Chengdu, China.
| | - Y Feng
- Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Road, 610041 Chengdu, China.
| | - M Chen
- Department of Cardiology, West China Hospital, Sichuan University, 37 Guoxue Road, 610041 Chengdu, China.
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Garassino MC, Oskar S, Arunachalam A, Zu K, Kao YH, Chen C, Meng W, Pietanza MC, Zhao B, Aggarwal H. Real-World Treatment Patterns and Outcomes of First-Line Immunotherapy Among Patients With Advanced Nonsquamous NSCLC Harboring BRAF, MET, or HER2 Alterations. JTO Clin Res Rep 2023; 4:100568. [PMID: 37744307 PMCID: PMC10514206 DOI: 10.1016/j.jtocrr.2023.100568] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/11/2023] [Accepted: 08/21/2023] [Indexed: 09/26/2023] Open
Abstract
Introduction Data on utilization and clinical outcomes of programmed cell death protein or programmed death-ligand 1 (PD-[L]1) inhibitors in NSCLC with uncommon oncogenic alterations is limited. Methods This retrospective study used a deidentified U.S. nationwide clinicogenomic database to select patients with advanced nonsquamous NSCLC without EGFR, ALK, or ROS1 alterations, diagnosed from January 1, 2016 to September 30, 2020, who initiated first-line therapy. Our objectives were to summarize characteristics and treatment patterns for patients with four little-studied genomic alterations or driver-negative NSCLC. We estimated Kaplan-Meier real-world time on treatment (rwTOT) and time to next treatment for patients receiving PD-(L)1 inhibitors. The data cutoff was September 30, 2021. Results Of the 3971 eligible patients, 84 (2%) had NSCLC with BRAF V600E mutation, 117 (3%) had MET exon 14 skipping mutation, 130 (3%) had MET amplification, 91 (2%) had ERBB2 activation mutation, and 691 patients (17%) had driver-negative NSCLC. Patient characteristics differed among cohorts as expected. The most common first-line regimen in each cohort was a PD-(L)1 inhibitor as monotherapy or in combination with chemotherapy. The median rwTOT with anti-PD-(L)1 monotherapy was 4.6 months in the driver-negative cohort and ranged from 2.9 months (ERBB2 mutation) to 7.6 months (BRAF V600E mutation). The median rwTOT with anti-PD-(L)1-chemotherapy combination was 5.2 months in the driver-negative cohort and 6 months in all but the BRAF V600E cohort (17.5 mo). The patterns of real-world time to next treatment results were similar. Conclusions Substantial use of anti-PD-(L)1 therapy and associated clinical outcomes are consistent with previous real-world findings and suggest no detriment from PD-(L)1 inhibitors for advanced nonsquamous NSCLC harboring one of these four genomic alterations relative to driver-negative NSCLC.
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Affiliation(s)
- Marina C. Garassino
- Thoracic Oncology Program, Section of Hematology Oncology, Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Sabine Oskar
- Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Rahway, New Jersey
| | - Ashwini Arunachalam
- Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Rahway, New Jersey
| | - Ke Zu
- Epidemiology, Merck & Co., Inc., Rahway, New Jersey
| | - Yu-Han Kao
- Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Rahway, New Jersey
| | - Cai Chen
- Data, AI and Genome Sciences (DAGS) Department, Merck & Co., Inc., Rahway, New Jersey
| | - Weilin Meng
- Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Rahway, New Jersey
| | | | - Bin Zhao
- Clinical Research, Merck & Co., Inc., Rahway, New Jersey
| | - Himani Aggarwal
- Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Rahway, New Jersey
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Chen F, Zhao ZG, Yao YJ, Zhu ZK, Li X, Zheng MX, Zhou X, Peng Y, Wei JF, Wei X, Liang YJ, Chen G, Zhu T, Meng W, Feng Y, Chen M. [Feasibility and safety of transseptal transcatheter mitral valve replacement for severe mitral regurgitation]. Zhonghua Yi Xue Za Zhi 2023; 103:1849-1854. [PMID: 37357191 DOI: 10.3760/cma.j.cn112137-20221109-02359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
A prospective, single-center, single-arm, and open-design study was performed to evaluate the feasibility and safety of transseptal transcatheter mitral valve replacement in the treatment of severe mitral regurgitation. Patients with symptomatic moderate-severe or severe mitral regurgitation at high-surgical risk and anatomically appropriate for the HighLife transseptal mitral valve replacement (TSMVR) system in West China Hospital, Sichuan University from December 2021 to August 2022 were enrolled. Four patients (1 male and 3 females) with severe mitral regurgitation were included, with a median age of 68.5 (64.0-77.0) years and a median Society of Thoracic Surgeons (STS) score of 8.1% (6.4%-8.9%). Technical success was achieved in all the patients. There was no residual mitral regurgitation, paravalvular leakage, or left ventricular outflow tract obstruction. Three major cardiovascular and cerebrovascular adverse events occurred within 30 days after the procedure, including ventricular tachycardia, iatrogenic atrial septal defect closure, and heart failure readmission. The current study preliminarily demonstrates that transcatheter mitral valve replacement using the HighLife system via the transseptal approach for severe mitral regurgitation is feasible and relatively safe.
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Affiliation(s)
- F Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Z G Zhao
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y J Yao
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Z K Zhu
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X Li
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - M X Zheng
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X Zhou
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Peng
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - J F Wei
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X Wei
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y J Liang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - G Chen
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - T Zhu
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - W Meng
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Feng
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - M Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
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Holler E, Chekani F, Ai J, Meng W, Khandker RK, Ben Miled Z, Owora A, Dexter P, Campbell N, Solid C, Boustani M. Development and Temporal Validation of an Electronic Medical Record-Based Insomnia Prediction Model Using Data from a Statewide Health Information Exchange. J Clin Med 2023; 12:jcm12093286. [PMID: 37176726 PMCID: PMC10179562 DOI: 10.3390/jcm12093286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 04/27/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023] Open
Abstract
This study aimed to develop and temporally validate an electronic medical record (EMR)-based insomnia prediction model. In this nested case-control study, we analyzed EMR data from 2011-2018 obtained from a statewide health information exchange. The study sample included 19,843 insomnia cases and 19,843 controls matched by age, sex, and race. Models using different ML techniques were trained to predict insomnia using demographics, diagnosis, and medication order data from two surveillance periods: -1 to -365 days and -180 to -365 days before the first documentation of insomnia. Separate models were also trained with patient data from three time periods (2011-2013, 2011-2015, and 2011-2017). After selecting the best model, predictive performance was evaluated on holdout patients as well as patients from subsequent years to assess the temporal validity of the models. An extreme gradient boosting (XGBoost) model outperformed all other classifiers. XGboost models trained on 2011-2017 data from -1 to -365 and -180 to -365 days before index had AUCs of 0.80 (SD 0.005) and 0.70 (SD 0.006), respectively, on the holdout set. On patients with data from subsequent years, a drop of at most 4% in AUC is observed for all models, even when there is a five-year difference between the collection period of the training and the temporal validation data. The proposed EMR-based prediction models can be used to identify insomnia up to six months before clinical detection. These models may provide an inexpensive, scalable, and longitudinally viable method to screen for individuals at high risk of insomnia.
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Affiliation(s)
- Emma Holler
- Department of Epidemiology and Biostatistics, Indiana University Bloomington School of Public Health, Bloomington, IN 47405, USA
| | | | - Jizhou Ai
- Merck & Co., Inc., Rahway, NJ 07033, USA
| | | | | | - Zina Ben Miled
- Department of Electrical and Computer Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN 46202, USA
- Regenstrief Institute, Indianapolis, IN 46202, USA
| | - Arthur Owora
- Department of Epidemiology and Biostatistics, Indiana University Bloomington School of Public Health, Bloomington, IN 47405, USA
| | - Paul Dexter
- Regenstrief Institute, Indianapolis, IN 46202, USA
- Department of Internal Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Noll Campbell
- Regenstrief Institute, Indianapolis, IN 46202, USA
- College of Pharmacy and Health Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Craig Solid
- Solid Research Group, LLC, Saint Paul, MN 55104, USA
| | - Malaz Boustani
- Regenstrief Institute, Indianapolis, IN 46202, USA
- Department of Internal Medicine, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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Chekani F, Zhu Z, Khandker RK, Ai J, Meng W, Holler E, Dexter P, Boustani M, Ben Miled Z. Modeling acute care utilization: practical implications for insomnia patients. Sci Rep 2023; 13:2185. [PMID: 36750631 PMCID: PMC9905481 DOI: 10.1038/s41598-023-29366-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 02/03/2023] [Indexed: 02/09/2023] Open
Abstract
Machine learning models can help improve health care services. However, they need to be practical to gain wide-adoption. In this study, we investigate the practical utility of different data modalities and cohort segmentation strategies when designing models for emergency department (ED) and inpatient hospital (IH) visits. The data modalities include socio-demographics, diagnosis and medications. Segmentation compares a cohort of insomnia patients to a cohort of general non-insomnia patients under varying age and disease severity criteria. Transfer testing between the two cohorts is introduced to demonstrate that an insomnia-specific model is not necessary when predicting future ED visits, but may have merit when predicting IH visits especially for patients with an insomnia diagnosis. The results also indicate that using both diagnosis and medications as a source of data does not generally improve model performance and may increase its overhead. Based on these findings, the proposed evaluation methodologies are recommended to ascertain the utility of disease-specific models in addition to the traditional intra-cohort testing.
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Affiliation(s)
| | - Zitong Zhu
- Computer Science, IUPUI, Indianapolis, IN, 46202, USA
| | | | - Jizhou Ai
- Merck & Co., Inc., Rahway, NJ, 07065, USA
| | | | - Emma Holler
- School of Public Health, Indiana University, Bloomington, IN, 47405, USA
| | - Paul Dexter
- School of Medicine, Indiana University, Indianapolis, IN, 46202, USA.,Regenstrief Institute, Indianapolis, IN, 46202, USA
| | - Malaz Boustani
- School of Medicine, Indiana University, Indianapolis, IN, 46202, USA.,Regenstrief Institute, Indianapolis, IN, 46202, USA
| | - Zina Ben Miled
- Regenstrief Institute, Indianapolis, IN, 46202, USA. .,Electrical and Computer Engineering, IUPUI, Indianapolis, IN, 46202, USA.
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McCoy DE, Goulet-Scott B, Meng W, Atahan BF, Kiros H, Nishino M, Kartesz J. Species clustering, climate effects, and introduced species in 5 million city trees across 63 US cities. eLife 2022; 11:77891. [PMID: 36165436 PMCID: PMC9578703 DOI: 10.7554/elife.77891] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 09/11/2022] [Indexed: 11/29/2022] Open
Abstract
Sustainable cities depend on urban forests. City trees—pillars of urban forests—improve our health, clean the air, store CO2, and cool local temperatures. Comparatively less is known about city tree communities as ecosystems, particularly regarding spatial composition, species diversity, tree health, and the abundance of introduced species. Here, we assembled and standardized a new dataset of N = 5,660,237 trees from 63 of the largest US cities with detailed information on location, health, species, and whether a species is introduced or naturally occurring (i.e., “native”). We further designed new tools to analyze spatial clustering and the abundance of introduced species. We show that trees significantly cluster by species in 98% of cities, potentially increasing pest vulnerability (even in species-diverse cities). Further, introduced species significantly homogenize tree communities across cities, while naturally occurring trees (i.e., “native” trees) comprise 0.51–87.4% (median = 45.6%) of city tree populations. Introduced species are more common in drier cities, and climate also shapes tree species diversity across urban forests. Parks have greater tree species diversity than urban settings. Compared to past work which focused on canopy cover and species richness, we show the importance of analyzing spatial composition and introduced species in urban ecosystems (and we develop new tools and datasets to do so). Future work could analyze city trees alongside sociodemographic variables or bird, insect, and plant diversity (e.g., from citizen-science initiatives). With these tools, we may evaluate existing city trees in new, nuanced ways and design future plantings to maximize resistance to pests and climate change. We depend on city trees. Trees in towns and cities provide critical services to humans, animals and other living things. They help prevent climate change by capturing and storing carbon dioxide; they provide food and shelter to other species, they scrub the air of microscopic pollutants, cool local temperatures, and improve the mental and physical health of those who have access to them. In general, naturally occurring (so called native) plant species support richer local ecosystems – such as bird and butterfly communities – than plants that have been introduced from other areas. However, relatively little is known about which species of trees are found in towns and cities or how these species are distributed. Here, McCoy, Goulet-Scott et al. assembled a dataset of 5.6 million city trees from 63 cities in the United States. This dataset contained rich data on the exact location, species, and health of individual city trees – including park trees, those in urban forests, and trees that line city streets. In nearly all of the cities, the same tree species were found clustered next to each other, even in cities that had many different species of tree overall. This tendency of tree species to flock together may make these communities more vulnerable to disease and pest outbreaks. Trees in more developed environments, like those that line streets, were much less species diverse than trees spread across parks. Cities with wetter, cooler climates tended to have higher percentages of native tree species compared to cities with drier, hotter climates. Younger cities also had a greater percentage of native tree species than older cities, which may reflect increased awareness of the importance of native tree species among urban planners in more recent years. The cities that had planted non-native tree species tended to select the same species, which contributed to tree communities in different cities looking more alike. McCoy, Goulet-Scott et al. provide easy-to-use tools academics and urban foresters can use to assess how diverse tree communities in individual cities are. This work may help local decision-makers to select and plant trees that build resilience against climate change, pest and disease outbreaks, and maximize the health benefits trees provide all city dwellers.
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Affiliation(s)
- Dakota E McCoy
- Department of Materials Science and Engineering, Stanford University, Stanford, United States
| | - Benjamin Goulet-Scott
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, United States
| | - Weilin Meng
- Independent Researcher, Boston, United States
| | - Bulent Furkan Atahan
- Department of Biology and Biotechnology, Worcester Polytechnic Institute, Worcester, United States
| | - Hana Kiros
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, United States
| | - Misako Nishino
- The Biota of North America Program (BONAP), Chapel Hill, United States
| | - John Kartesz
- The Biota of North America Program (BONAP), Chapel Hill, United States
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Liu S, Hu X, Chirovsky D, Meng W, Samkari A. OA07.04 Overall Survival in Patients with Advanced NSCLC Receiving Taxane-Containing Regimen After Exposure to Immunotherapy and Platinum-Doublet. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Miles S, Yao L, Meng W, Black CM, Ben-Miled Z. A social and news media benchmark dataset for topic modeling. Data Brief 2022; 43:108442. [PMID: 35859786 PMCID: PMC9289850 DOI: 10.1016/j.dib.2022.108442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 06/23/2022] [Accepted: 06/29/2022] [Indexed: 11/26/2022] Open
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Lin Z, Xiong Y, Meng W, Hu Y, Chen L, Chen L, Xue H, Panayi AC, Zhou W, Sun Y, Cao F, Liu G, Hu L, Yan C, Xie X, Lin C, Cai K, Feng Q, Mi B, Liu G. Exosomal PD-L1 induces osteogenic differentiation and promotes fracture healing by acting as an immunosuppressant. Bioact Mater 2022; 13:300-311. [PMID: 35224310 PMCID: PMC8844834 DOI: 10.1016/j.bioactmat.2021.10.042] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 12/25/2022] Open
Abstract
A moderate inflammatory response at the early stages of fracture healing is necessary for callus formation. Over-active and continuous inflammation, however, impairs fracture healing and leads to excessive tissue damage. Adequate fracture healing could be promoted through suppression of local over-active immune cells in the fracture site. In the present study, we achieved an enriched concentration of PD-L1 from exosomes (Exos) of a genetically engineered Human Umbilical Vein Endothelial Cell (HUVECs), and demonstrated that exosomes overexpressing PD-L1 specifically bind to PD-1 on the T cell surface, suppressing the activation of T cells. Furthermore, exosomal PD-L1 induced Mesenchymal Stem Cells (MSCs) towards osteogenic differentiation when pre-cultured with T cells. Moreover, embedding of Exos into an injectable hydrogel allowed Exos delivery to the surrounding microenvironment in a time-released manner. Additionally, exosomal PD-L1, embedded in a hydrogel, markedly promoted callus formation and fracture healing in a murine model at the early over-active inflammation phase. Importantly, our results suggested that activation of T cells in the peripheral lymphatic tissues was inhibited after local administration of PD-L1-enriched Exos to the fracture sites, while T cells in distant immune organs such as the spleen were not affected. In summary, this study provides the first example of using PD-L1-enriched Exos for bone fracture repair, and highlights the potential of Hydrogel@Exos systems for bone fracture therapy through immune inhibitory effects.
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Affiliation(s)
- Ze Lin
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Yuan Xiong
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Weilin Meng
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Yiqiang Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Lili Chen
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Lang Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Hang Xue
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Adriana C. Panayi
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02152, USA
| | - Wu Zhou
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Yun Sun
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Faqi Cao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Guodong Liu
- Medical Center of Trauma and War Injuries, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Liangcong Hu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Chenchen Yan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Xudong Xie
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Chuanchuan Lin
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Qian Feng
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Bobin Mi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
- Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan, 430022, China
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Wang J, Meng W, Yang J, Cao H, Liu T, Yang C, Yu M, Wang B. Aberrant methylation-mediated downregulation of the LINC01554 gene accelerates the malignant progression and regulates the chemosensitivity of laryngeal squamous cell carcinoma. J Physiol Pharmacol 2022; 73. [PMID: 35988928 DOI: 10.26402/jpp.2022.2.03] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/30/2022] [Indexed: 06/15/2023]
Abstract
Laryngeal squamous cell carcinoma (LSCC) is diagnosed as a malignant tumor with a poor prognosis, the associated mechanisms still need to be further investigated. The LINC01554 gene is confirmed to participate in the tumorigenesis of hepatocellular carcinoma, but its role in LSCC has not been investigated. The aim of this study was to investigate the function and the potential mechanism of LINC01554 in LSCC, LINC01554 further was used as a molecular target for the diagnosis and molecular targeted therapy of LSCC. The microarray-based gene expression profiling of LSCC and its adjacent non-tumor tissue were used to identify the differentially expressed long non-coding RNAs (lncRNAs). Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was applied to verify the expression levels of LINC01554 in tissue and LSCC cell lines. The DNA methylation level of the LINC01554 promoter was detected by the application of bisulfite genomic sequencing (BGS), and the bisulfite conversion-specific/methylation-specific polymerase chain reaction (BS-MSP) method. The effect of LINC01554 on the proliferation, migration, and invasion of squamous cell carcinoma was assessed by MTS, wound healing, transwell, RT-qPCR, Western blot in vitro-cultured TU177 cells, and AMC-HN-8 cells. The microarray-based gene expression profiling identified the differentially expressed lncRNAs, including LINC01554, with downregulation in the LSCC tissue vs. normal tissue. The RT-qPCR verified the downregulation of LINC01554 in the LSCC tissue (P=0.0049) and LSCC cell (P=0.0020). The BGS and BS-MSP exhibited the hypermethylation level of the LINC01554 promoter, which mediated the downregulation of LINC01554. A gain-of-function experiment showed that LINC01554 inhibited the proliferation, migration, and invasion of TU177 and AMC-HN-8. Subsequently, LINC01554 overexpression was shown to decrease cell viability in TU177 and AMC-HN-8 cells treated with cisplatin. Our findings indicated that the aberrant methylation-mediated downregulation of LINC01554 promoted malignant progression and cisplatin resistance in LSCC, and LINC01554 may serve as a potential diagnostic biomarker and a novel therapeutic target for LSCC.
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Affiliation(s)
- J Wang
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - W Meng
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - J Yang
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - H Cao
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - T Liu
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - C Yang
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - M Yu
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - B Wang
- Department of Otorhinolaryngology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
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12
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Zhao ZG, Zhu ZK, Peng Y, Wei JF, He S, Chen Y, Zhou X, Wei X, Zheng MX, Chen G, Meng W, Huang B, Feng Y, Chen M. [A case of transcaval transcatheter aortic valve replacement]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:292-294. [PMID: 35340150 DOI: 10.3760/cma.j.cn112148-20211210-01063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Z G Zhao
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Z K Zhu
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Peng
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - J F Wei
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - S He
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X Zhou
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X Wei
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - M X Zheng
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - G Chen
- Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - W Meng
- Department of Cardiac Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - B Huang
- Department of Vascular Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Feng
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Mao Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
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13
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Wei JF, Yang HR, Peng Y, He S, Chen Y, Zhao ZG, Meng W, Zhou X, Liang YJ, Zhou WX, Wei X, Li X, Chen F, Zhu ZK, Zhang Y, He JJ, Chen M, Feng Y. [Preliminary clinical experience of the novel transcatheter aortic valve system Prizvalve ® for the treatment of severe aortic stenosis]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:137-141. [PMID: 35172457 DOI: 10.3760/cma.j.cn112148-20211030-00937] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To evaluate the safety and efficacy of transcatheter aortic valve implantation (TAVI) with the novel Prizvalve® system in treating severe aortic stenosis. Methods: This is a single-center, prospective, single-arm, observational study. A total of 11 patients with severe aortic stenosis with high risk or inappropriate for conventional surgical aortic valve replacement (SAVR) were included, and TAVI was achieved with the Prizvalve® system between March 2021 and May 2021 in West China Hospital. Transthoracic echocardiography (TTE) was performed immediately after prosthesis implantation to evaluate mean transaortic gradient and maximal transaortic velocity. The device success rate was calculated, which was defined as (1) the device being delivered via the access, deployed, implanted and withdrawn, (2) mean transaortic gradient<20 mmHg (1 mmHg=0.133 kPa) or a maximal transaortic velocity<3 m/s post TAVI, and without severe aortic regurgitation or paravalvular leak post TAVI. TTE was performed at 30 days after the surgery, and all-cause mortality as well as the major cardiovascular adverse events (including acute myocardial infarction, disabling hemorrhagic or ischemic stroke) up to 30 days post TAVI were analyzed. Results: The age of 11 included patients were (78.1±6.3) years, with 8 males. A total of 10 patients were with NYHA functional class Ⅲ or Ⅳ. Devices were delivered via the access, deployed, implanted and withdrawn successfully in all patients. Post-implant mean transaortic gradient was (7.55±4.08) mmHg and maximal transaortic velocity was (1.78±0.44) m/s, and both decreased significantly as compared to baseline levels (both P<0.05). No severe aortic regurgitation or paravalvular leak was observed post TAVI. Device success was achieved in all the 11 patients. No patient died or experienced major cardiovascular adverse events up to 30 days post TAVI. Mean transaortic gradient was (9.45±5.07) mmHg and maximal transaortic velocity was (2.05±0.42) m/s at 30 days post TAVI, which were similar as the values measured immediately post TAVI (both P>0.05). Conclusions: TAVI with the Prizvalve® system is a feasible and relatively safe procedure for patients with severe aortic stenosis and at high risk or inappropriate for SAVR. Further clinical studies could be launched to obtain more clinical experience with Prizvalve® system.
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Affiliation(s)
- J F Wei
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - H R Yang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Peng
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - S He
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Z G Zhao
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - W Meng
- Department of Cardiovascular Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X Zhou
- Department of Radiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y J Liang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - W X Zhou
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X Wei
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - X Li
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - F Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Z K Zhu
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Zhang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - J J He
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - M Chen
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y Feng
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu 610041, China
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14
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Black CM, Meng W, Yao L, Ben Miled Z. Inferring the patient's age from implicit age clues in health forum posts. J Biomed Inform 2021; 125:103976. [PMID: 34906737 DOI: 10.1016/j.jbi.2021.103976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 12/03/2021] [Accepted: 12/06/2021] [Indexed: 11/24/2022]
Abstract
Broader patient-reported experiences in oncology are largely unknown due to the lack of available information from traditional data sources. Online health community data provide an exploratory way to uncover these experiences at a large scale. Analyzing these data can guide further studies towards understanding patients' needs and experiences. However, analysis of online health data is inherently difficult due to the unstructured nature of these data and the variety of ways information can be expressed over text. Specifically, subscribers may not disclose critical information such as the age of the patient in their posts. In fact, the number of health forum posts that explicitly mention the age of the patient is significantly lower than the number of posts that do not include this information in the Reddit r/Cancer health forum under consideration in the present paper. Health-focused studies often need to consider or control for age as a confounder, hence the importance of having sufficient age data. This paper presents a methodology that can help classify health forum posts according to four age groups (0-17, 18-39, 40-64 and 65 + years) even when the posts do not contain explicit mention of the age of the patient. First, the subset of the posts that include explicit mention of the age of the patient is identified. Second, the explicit age clues are removed from these posts and used to train the proposed age classifier. The resulting classifier is able to infer the age of the patient using only implicit age clues with an average true positive rate (TPR) of 71%. This TPR is comparable to the average TPR of 69% obtained from human annotations for the same set of posts.
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Affiliation(s)
| | - Weilin Meng
- Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - Lixia Yao
- Merck & Co., Inc., 2000 Galloping Hill Road, Kenilworth, NJ 07033, USA
| | - Zina Ben Miled
- Department of Electrical and Computer Engineering, IUPUI, Indianapolis, IN 46202, USA; Regenstrief Institute, Inc., 1101 W. 10th Street, Indianapolis, IN 46202, USA.
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15
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Liu Y, Xu X, Yang Y, Hu H, Jiang X, Xiong X, Meng W. Malignant acanthosis nigricans and diseases with extensive oral papillary hyperplasia. Clin Exp Dermatol 2021; 47:651-657. [PMID: 34750849 DOI: 10.1111/ced.14995] [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] [Accepted: 10/22/2021] [Indexed: 11/29/2022]
Abstract
Oral papillary lesions represent a variety of developmental and neoplastic conditions. Early diagnoses of different papillary lesions are challenging for oral medicine specialists. Malignant acanthosis nigricans (MAN) is a rare cutaneous disorder and a potential marker of underlying hidden tumours. It is characterized by papillary lesions that always involve the oral mucosa. In oral medicine specialities, MAN is not well understood. When the early signs of MAN are extensive oral lesions and slight cutaneous pigmentation without obvious florid cutaneous papillomatosis, the diagnosis can be incorrect or delayed. Oral medicine specialists should ask affected patients to provide details of their medical history and conduct a timely systemic examination.
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Affiliation(s)
- Y Liu
- Department of Oral Medicine, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - X Xu
- Department of Oral Medicine, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Y Yang
- Department of Oral Medicine, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - H Hu
- Department of Oral Medicine, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - X Jiang
- Department of Oral Medicine, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - X Xiong
- Department of Oral Medicine, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - W Meng
- Department of Oral Medicine, Stomatological Hospital, Southern Medical University, Guangzhou, China
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16
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Demuyakor A, Hu S, Koniaeva E, Liu M, Weng Z, Zhao C, Feng X, He L, Xu Y, Zeng M, Meng W, Yi B, Qin Y, Jia H, Bo Y. Impact of nodular calcification on the outcomes of patients with acute coronary syndrome (ACS) treated with primary percutaneous coronary intervention (PCI). Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1249] [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
Background
Calcified plaque is thought to adversely impact clinical outcomes but the impact of nodular calcification after percutaneous coronary intervention (PCI) in patients with acute coronary syndrome (ACS) remains unclear.
Purpose
This study sought to explore the impact of nodular calcification on the outcomes of patients undergoing percutaneous coronary intervention for acute coronary syndromes.
Methods
Five-hundred culprit plaque with calcification were analysed from 495 ACS patients in whom PCI was performed. Plaques were divided into nodular calcification group (n=238) and non-nodular calcification group (n=262). Calcification is defined as an area with low back-scattering signal and a sharp border. Nodular calcification was defined as a protruding mass with an irregular surface, high backscattering, and signal attenuation on optical coherence tomography (OCT).
Results
Patients with nodular calcification were older (p<0.001) and had lower left ventricular ejection fraction (p=0.006) compared to patients with non-nodular calcification. Lesion length (31 (25.2, 38.5) vs. 29 (22.8, 34.1), p<0.001) was longer in plaques with nodular calcification. A higher prevalence of superficial calcium (p<0.001) was observed in plaques with nodular calcification compared with non-nodular calcification group. Minimum stent area (MSA) (5.0 (3.9, 6.3) vs. 5.4 (4.2, 6.7), p=0.011) and stent expansion (70 (62.7, 81.8) vs. 75 (65.2, 86.6), p=0.004) were significantly smaller in the nodular calcification group than in the non-nodular calcification group. Independent predictors of nodular calcification were age (p<0.001) lesion length (p=0.002) and calcium depth (p<0.001).
Conclusion
This study demonstrated that the presence of nodular calcification is associated with unfavourable outcomes with smaller minimum stent area and higher incidence of stent under expansion in patients with ACS treated with primary PCI.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- A Demuyakor
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - S Hu
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - E Koniaeva
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - M Liu
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - Z Weng
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - C Zhao
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - X Feng
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - L He
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - Y Xu
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - M Zeng
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - W Meng
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - B Yi
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - Y Qin
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - H Jia
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
| | - Y Bo
- The 2nd Affiliated Hospital of Harbin Medical University; The Key Laboratory of Myocardial Ischemia, Department of Cardiology, Harbin, China
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17
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Meng W, Mosesso KM, Lane KA, Roberts AR, Griffith A, Ou W, Dexter PR. An Automated Line-of-Therapy Algorithm for Adults With Metastatic Non-Small Cell Lung Cancer: Validation Study Using Blinded Manual Chart Review. JMIR Med Inform 2021; 9:e29017. [PMID: 34636730 PMCID: PMC8548977 DOI: 10.2196/29017] [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: 03/22/2021] [Revised: 06/22/2021] [Accepted: 07/02/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Extraction of line-of-therapy (LOT) information from electronic health record and claims data is essential for determining longitudinal changes in systemic anticancer therapy in real-world clinical settings. OBJECTIVE The aim of this retrospective cohort analysis is to validate and refine our previously described open-source LOT algorithm by comparing the output of the algorithm with results obtained through blinded manual chart review. METHODS We used structured electronic health record data and clinical documents to identify 500 adult patients treated for metastatic non-small cell lung cancer with systemic anticancer therapy from 2011 to mid-2018; we assigned patients to training (n=350) and test (n=150) cohorts, randomly divided proportional to the overall ratio of simple:complex cases (n=254:246). Simple cases were patients who received one LOT and no maintenance therapy; complex cases were patients who received more than one LOT and/or maintenance therapy. Algorithmic changes were performed using the training cohort data, after which the refined algorithm was evaluated against the test cohort. RESULTS For simple cases, 16 instances of discordance between the LOT algorithm and chart review prerefinement were reduced to 8 instances postrefinement; in the test cohort, there was no discordance between algorithm and chart review. For complex cases, algorithm refinement reduced the discordance from 68 to 62 instances, with 37 instances in the test cohort. The percentage agreement between LOT algorithm output and chart review for patients who received one LOT was 89% prerefinement, 93% postrefinement, and 93% for the test cohort, whereas the likelihood of precise matching between algorithm output and chart review decreased with an increasing number of unique regimens. Several areas of discordance that arose from differing definitions of LOTs and maintenance therapy could not be objectively resolved because of a lack of precise definitions in the medical literature. CONCLUSIONS Our findings identify common sources of discordance between the LOT algorithm and clinician documentation, providing the possibility of targeted algorithm refinement.
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Affiliation(s)
- Weilin Meng
- Center for Observational and Real-World Evidence, Merck & Co, Inc, Kenilworth, NJ, United States
| | - Kelly M Mosesso
- Department of Biostatistics and Health Data Science, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Kathleen A Lane
- Department of Biostatistics and Health Data Science, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Anna R Roberts
- Regenstrief Institute, Inc, Indianapolis, IN, United States
| | | | - Wanmei Ou
- Center for Observational and Real-World Evidence, Merck & Co, Inc, Kenilworth, NJ, United States
| | - Paul R Dexter
- Regenstrief Institute, Inc, Indianapolis, IN, United States
- Eskenazi Health, Indianapolis, IN, United States
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, United States
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18
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Zeng M, Hu S, Meng W, Zhao C, Wang S, Weng Z, He L, Qin Y, Feng X, Chen X, Xu Y, Yi B, Jia H, Yu B. Gender-specific difference of clinical and plaque characteristics in myocardial infarction with non-obstructive artery (MINOCA): insights from optical coherence tomography. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1194] [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: 11/15/2022] Open
Abstract
Abstract
Background
To date, sparse data are available with regard to gender differences in coronary plaque morphology and composition as underlying mechanism of MINOCA.
Purpose
To assess the differences in coronary plaque morphology in culprit lesion between women and men with MINOCA using intravascular optical coherence tomography.
Methods
Totally, 7404 consecutives acute myocardial infarction patients who underwent emergency coronary angiography between 2016 and 2019 were screened. MINOCA were identified in 292 patients (mean age: 72.6% male, 54.1% with ST-segment elevation). Optical coherence tomography was performed in 190 patients (men, n=142).
Results
Women with MINOCA were older (62.5±10.6 vs. 54.0±11.5, P<0.001) and more over 55 years (75.3% vs. 43.6%, P<0.001). Although women with MINOCA more frequently presented with NSTEMI (56.8% vs. 41.7%, P=0.025) and prior coronary artery disease (CAD) (33.3% vs. 6.3%, P<0.001), they were less likely smoker (27.2% vs. 58.8%, P<0.001). There was no significant difference in incidence of plaque rupture, erosion and calcified nodule between men and women. However, women were more likely to have thin-cap fibroatheroma (TCFA) (39.6% vs. 22.5%, P=0.025).
Conclusion
Women with MINOCA were older, more frequently presented with NSTEMI and less smoking compared to men. Besides, more TCFA were observed in women.
Funding Acknowledgement
Type of funding sources: None. Clinical and OCT plaque profilesProportion of clinical and OCT profiles
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Affiliation(s)
- M Zeng
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - S Hu
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - W Meng
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - C Zhao
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - S Wang
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Z Weng
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - L He
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Y Qin
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - X Feng
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - X Chen
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Y Xu
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - B Yi
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - H Jia
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - B Yu
- The Second Affiliated Hospital of Harbin Medical University, Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
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Kale HP, Qureshi ZP, Shah R, Khandker R, Botteman M, Meng W, Benca R. Changes in Healthcare Resource Use and Costs in Commercially Insured Insomnia Patients Initiating Suvorexant. Adv Ther 2021; 38:5221-5237. [PMID: 34463922 PMCID: PMC8478735 DOI: 10.1007/s12325-021-01891-8] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/06/2021] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Insomnia diagnosis has been associated with a significant clinical and economic burden on patients and healthcare systems. This study examined changes in healthcare resource use (HCRU) and costs in insomnia patients before and after initiation of suvorexant treatment. METHODS This retrospective cohort study analyzed Optum Clinformatics Data Mart claims data (Jan 2010-Dec 2018). Patients with ≥ 2 insomnia diagnosis claims and ≥ 1 prescription for suvorexant were included. Prevalent and incident insomnia patients were analyzed separately. The change in the trends of HCRU and costs were examined for 12 months before and 12 months after suvorexant initiation. An interrupted time series (ITS) analysis was conducted to assess the level and slope changes. Subgroups of patients with mental health comorbidities were examined. RESULTS The study included 18,919 and 5939 patients in the prevalent and incident insomnia cohorts, respectively. For the prevalent cohort, mean (SD) age was 64.5 (14.1) years, 65% were female, 74% had Medicare Advantage coverage, and 61% had a Charlson comorbidity index score ≥ 1. Characteristics for the incident cohort were similar. The ITS results suggested that the trend for monthly total healthcare cost (THC) was increasing before suvorexant initiation (US$52.51 in the prevalent cohort, $74.93 in incident insomnia cohort), but, after suvorexant initiation, the monthly total cost showed a decreasing trend in both cohorts. The decrease in slope for THC after suvorexant initiation were $72.66 and $112.07 per month in the prevalent and incident cohorts, respectively. The monthly trends in HCRU rates also decreased. The subgroup analysis showed that decreases were 1.5-3 times greater for patients with mental health comorbidities. CONCLUSIONS In this real-world study, suvorexant initiation was associated with immediate and continued decreases in HCRU and costs in insomnia patients. Further research is needed to understand the effect of suvorexant initiation on direct medical costs as well as costs associated with lost productivity in other real-world settings.
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Affiliation(s)
| | - Zaina P Qureshi
- Merck & Co., Inc, 2000 Galloping Hill Rd, Kenilworth, NJ, USA.
| | - Ruchit Shah
- OPEN Health Evidence & Access, Bethesda, MD, USA
| | - Rezaul Khandker
- Merck & Co., Inc, 2000 Galloping Hill Rd, Kenilworth, NJ, USA
| | | | - Weilin Meng
- Merck & Co., Inc, 2000 Galloping Hill Rd, Kenilworth, NJ, USA
| | - Ruth Benca
- University of California, Irvine, Irvine, CA, USA
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Meng W, Meng J, Zhang F, Jiang H, Feng X, Zhao F, Wang K. Sulforaphane overcomes T790M-mediated gefitinib resistance in vitro through epithelial-mesenchymal transition. J Physiol Pharmacol 2021; 72. [PMID: 35158336 DOI: 10.26402/jpp.2021.5.09] [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] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 10/30/2021] [Indexed: 06/14/2023]
Abstract
The purpose of the present study was to investigate the effects of sulforaphane (SFN) on gefitinib-resistant cell lines with a T790 mutation (PC-9/AB11). The PC-9 and PC-9/AB11 cells were stained with H&E and visualized with a light microscope. The CCK-8 assay method was used to evaluate the antiproliferative activity of gefitinib and SFN on the cells. Cell cycle arrest and apoptosis were analyzed via flow cytometry. The cytotoxic interaction between the two drugs was evaluated in vitro using the combination index method, and epithelial-mesenchymal transition (EMT)-related proteins and alterations in the signaling pathways were determined by Western blot analysis. Compared to the PC-9 cells, the gefitinib-resistant PC-9/AB11 cells acquired a T790M mutation and had characteristics in accordance with EMT. The combination of gefitinib and SFN induced dose-dependent antiproliferative effects in the PC-9 and PC-9/AB11 cells, while both induced cell cycle arrest and cell apoptosis only in the PC-9/AB11 cells. The synergistic effect in the PC-9/AB11 cells was associated with this drug combination, as it caused an expression change of the epithelial (E-cadherin, claudin-1) and matrix proteins (vimentin, N-cadherin) in the cells, related to the reversal of EMT, as well as an expression change of the epidermal growth factor receptor (EGFR), p-EGFR, p-AKT, and p-ERK proteins. In this study, SFN overcame T790M-mediated gefitinib resistance in vitro through EMT. Thus, a combination of gefitinib and SFN may be a beneficial treatment strategy for lung cancer patients with acquired resistance due to T790M mutation.
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Affiliation(s)
- W Meng
- Department of Cardiothoracic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
| | - J Meng
- The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - F Zhang
- Department of Cardiothoracic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - H Jiang
- Department of Cardiothoracic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - X Feng
- Department of Cardiothoracic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - F Zhao
- Department of Cardiothoracic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - K Wang
- Department of Cardiothoracic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Hu J, Gao J, Liu J, Meng H, Hao N, Song Y, Ma L, Luo W, Sun J, Gao W, Meng W, Sun Y. Prospective evaluation of first-trimester screening strategy for preterm pre-eclampsia and its clinical applicability in China. Ultrasound Obstet Gynecol 2021; 58:529-539. [PMID: 33817865 DOI: 10.1002/uog.23645] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/05/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVES To evaluate, in a Chinese population, the performance of a screening strategy for preterm pre-eclampsia (PE) using The Fetal Medicine Foundation (FMF)'s competing-risks model and to explore its clinical applicability in mainland China. METHODS This was a prospective, multicenter, observational cohort study including 10 899 women with singleton pregnancy who sought prenatal care at one of 13 hospitals, located in seven cities in mainland China, between 1 December 2017 and 30 December 2019. Mean arterial pressure (MAP), uterine artery pulsatility index (UtA-PI) and maternal serum levels of placental growth factor (PlGF) and pregnancy-associated plasma protein-A (PAPP-A) at 11 + 0 to 13 + 6 weeks' gestation were measured and converted into multiples of the median using Chinese reference ranges. Individualized risk for preterm PE was calculated using the FMF algorithm. Prior risk was calculated based on maternal demographic characteristics and obstetric history. We evaluated the efficiency of the screening strategy using various combinations of biomarkers and analyzed its predictive performance for a composite of placenta-associated adverse pregnancy outcomes, including PE, placental abruption, small-for-gestational age (SGA) and preterm birth, at fixed false-positive rates for preterm PE. RESULTS We identified 312 pregnancies that developed PE, of which 117 cases were diagnosed as preterm PE (< 37 weeks' gestation). There were 386 pregnancies complicated by severe composite placenta-associated adverse outcome, including preterm PE, 146 cases of severe SGA (birth weight < 3rd percentile) neonate, 61 cases with placental abruption and 109 cases of early preterm birth < 34 gestational weeks. The triple-marker model containing biomarkers MAP, UtA-PI and PAPP-A achieved, at fixed false-positive rates of 10%, 15% and 20%, detection rates for preterm PE of 65.0%, 72.7% and 76.1%, respectively, and detection rates for severe composite placenta-associated adverse outcome of 34.7%, 41.7% and 46.4%, respectively. Replacing PAPP-A with PlGF or adding PlGF to the model did not improve the performance. Of women screening positive for preterm PE at a fixed 5% false-positive rate, an estimated 30% developed at least one placenta-associated adverse pregnancy outcome, including PE, placental abruption, SGA (birth weight < 10th percentile) and preterm birth < 37 weeks. CONCLUSIONS The FMF competing-risks model for preterm PE was found to be effective in screening a mainland Chinese population. Women who screened positive for preterm PE had increased risk for other placenta-associated pregnancy complications. © 2021 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- J Hu
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, National Clinical Research Center for Obstetric and Gynecologic Diseases, Beijing, China
| | - J Gao
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, National Clinical Research Center for Obstetric and Gynecologic Diseases, Beijing, China
| | - J Liu
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, National Clinical Research Center for Obstetric and Gynecologic Diseases, Beijing, China
| | - H Meng
- Department of Ultrasonic Diagnosis, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - N Hao
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, National Clinical Research Center for Obstetric and Gynecologic Diseases, Beijing, China
| | - Y Song
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, National Clinical Research Center for Obstetric and Gynecologic Diseases, Beijing, China
| | - L Ma
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, National Clinical Research Center for Obstetric and Gynecologic Diseases, Beijing, China
| | - W Luo
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, National Clinical Research Center for Obstetric and Gynecologic Diseases, Beijing, China
| | - J Sun
- Department of Obstetrics and Gynecology, General Hospital of Northern Theater Command, Shenyang, Liaoning Province, China
| | - W Gao
- Department of Obstetrics and Gynecology, Beijing Daxing People's Hospital, Beijing, China
| | - W Meng
- Department of Obstetrics and Gynecology, Tongzhou Maternal and Child Health Hospital of Beijing, Beijing, China
| | - Y Sun
- Department of Obstetrics and Gynecology, Beijing Shunyi District Maternal and Child Health Hospital, Beijing, China
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Mladkova N, Meng W, Yaney A, Sells B, Jhawar S, Konieczkowski D, Gamez M, Bonomi M, Blakaj D. 899P Gene expression analysis of primary and recurrent laryngeal tumors reveals disruption in key regulatory pathways. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Bellaiche MMJ, Fan W, Walbert HJ, McClave EH, Goodnight BL, Sieling FH, Moore RA, Meng W, Black CM. Disparity in Access to Oncology Precision Care: A Geospatial Analysis of Driving Distances to Genetic Counselors in the U.S. Front Oncol 2021; 11:689927. [PMID: 34222017 PMCID: PMC8242948 DOI: 10.3389/fonc.2021.689927] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 05/26/2021] [Indexed: 11/13/2022] Open
Abstract
In the US, the growing demand for precision medicine, particularly in oncology, continues to put pressure on the availability of genetic counselors to meet that demand. This is especially true in certain geographic locations due to the uneven distribution of genetic counselors throughout the US. To assess these disparities, access to genetic counselors of all specialties is explored by geography, cancer type, and social determinants of health. Geospatial technology was used to combine and analyze genetic counselor locations and cancer incidence at the county level across the US, with a particular focus on tumors associated with BRCA mutations including ovarian, pancreatic, prostate and breast. Access distributions were quantified, and associations with region, cancer type, and socioeconomic variables were investigated using correlational tests. Nationally, in 2020, there were 4,813 genetic counselors, or 1.49 genetic counselors per 100,000 people, varying between 0.17 to 5.7 per 100,000 at the state level. Seventy-one percent of U.S. residents live within a 30-minute drive-time to a genetic counselor. Drive-times, however, are not equally distributed across the country - while 82% of people in metropolitan areas are 30 minutes from a genetic counselor, only 6% of people in nonmetro areas live within 30 minutes' drive time. There are statistically significant differences in access across geographical regions, socioeconomics and cancer types. Access to genetic counselors for cancer patients differs across groups, including regional, socioeconomic, and cancer type. These findings highlight areas of the country that may benefit from increased genetic counseling provider supply, by increasing the number of genetic counselors in a region or by expanding the use of telegenetics a term used to describe virtual genetic counseling consults that occur via videoconference. Policy intervention to allow genetic counselors to bill for their services may be an effective route for increasing availability of genetic counselors' services However, genetic counselors in direct patient care settings also face other challenges such as salary, job satisfaction, job recognition, overwork/burnout, and appropriate administrative/clinical support, and addressing these issues should also be considered along with policy support. These results could support targeted policy reform and alternative service models to increase access to identified pockets of unmet need, such as telemedicine. Data and analysis are available to the public through an interactive dashboard.
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Affiliation(s)
| | - Winnie Fan
- Guidehouse Inc., McLean, VA, United States
| | | | | | | | | | - Rebekah A Moore
- Precision Medicine & Nurse Education, AstraZeneca Pharmaceuticals, Gaithersburg, MD, United States
| | - Weilin Meng
- Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Kenilworth, NJ, United States
| | - Christopher M Black
- Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Kenilworth, NJ, United States
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Meng W, Lao L, Zhang ZJ, Lin WL, Zhang YB, Yeung WF, Yu YMB, Ng HYE, Chen JP, Su J, Rong JH, Lam PYF, Lee E. Tumour-shrinking decoction for symptomatic uterine fibroids: a double-blind, randomised, two-dose trial (abridged secondary publication). Hong Kong Med J 2021; 27 Suppl 2:8-10. [PMID: 34075883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023] Open
Affiliation(s)
- W Meng
- LKS Faculty of Medicine, The University of Hong Kong
| | - L Lao
- LKS Faculty of Medicine, The University of Hong Kong
| | - Z J Zhang
- LKS Faculty of Medicine, The University of Hong Kong
| | - W L Lin
- Hong Kong Institute of Integrative Medicine, Faculty of Medicine, The Chinese University of Hong Kong
| | - Y B Zhang
- LKS Faculty of Medicine, The University of Hong Kong
| | - W F Yeung
- School of Nursing, The Hong Kong Polytechnic University
| | - Y M B Yu
- School of Nursing, The Hong Kong Polytechnic University
| | - H Y E Ng
- LKS Faculty of Medicine, The University of Hong Kong
| | - J P Chen
- LKS Faculty of Medicine, The University of Hong Kong
| | - J Su
- LKS Faculty of Medicine, The University of Hong Kong
| | - J H Rong
- LKS Faculty of Medicine, The University of Hong Kong
| | - P Y F Lam
- LKS Faculty of Medicine, The University of Hong Kong
| | - E Lee
- LKS Faculty of Medicine, The University of Hong Kong
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Kale H, Khandker R, Shah R, Botteman M, Meng W, Jootun M, Qureshi Z. 354 Trends in the Drug-Sparing Effects for Benzodiazepines and Prescription Opioids among Insomnia Patients on Suvorexant in the US. Sleep 2021. [DOI: 10.1093/sleep/zsab072.353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Use of benzodiazepines to treat insomnia has been associated with serious side effects and abuse potential. Insomnia patients are at high risk of opioid abuse and better sleep patterns may help to reduce opioid use. This study examined the trend in the use of benzodiazepines and prescription opioids before and after initiation of suvorexant in insomnia patients.
Methods
The study analyzed 2015–2019, Optum Clinformatics Data Mart. Insomnia patients, identified using ICD-9/10 codes and prescribed suvorexant were included. The study included incident (newly diagnosed) and prevalent cohorts of insomnia patients. The proportion of patients on benzodiazepines or prescription opioids were calculated for 12 monthly intervals before (pre-period) and after initiation of suvorexant (post-period). Interrupted time series (ITS) analysis was conducted to assess trends for use of benzodiazepine or prescription opioids over time.
Results
A total of 5,939 patients from the incident insomnia cohort and 18,920 from the prevalent cohort were included. For the incident cohort, mean age was 64.47 (SD: 15.48), 63% were females, 71% had Medicare Advantage coverage, 59% had Charlson comorbidity index score (CCI) ≥ 1, 27% had an anxiety disorder and 16% had substance abuse disorder. Prevalent insomnia cohort was similar but had higher CCI. Results from ITS suggested that at the beginning of the pre-period, 28% of incident insomnia patients used either opioids or benzodiazepines with the rate of use in the pre-period increasing by 0.11% per month. In the post-period, the rate of use decreased by 0.33% per month. About 26% patients used benzodiazepines or opioids at 12-month after suvorexant initiation. In the absence of suvorexant, this proportion would have been 31%. Similar findings were observed for the prevalent insomnia cohort. A larger decrease was observed for opioid use than benzodiazepines.
Conclusion
The rate of benzodiazepines or prescription opioid use decreased over time after the initiation of suvorexant. Suvorexant has the potential to reduce the use of opioids and benzodiazepines among insomnia patients. Further research is needed to confirm these findings.
Support (if any)
This study was sponsored by Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA.
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Li C, Li G, Dong P, Li H, Meng W, Zhang D. Enhancement of Catalytic Activity for Benzene Hydroxylation over Novel V2O5/HZSM-5 Catalyst. Kinet Catal 2021. [DOI: 10.1134/s0023158421020075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wang A, Liu C, Ge X, Meng W, Pi Y, Liu C. Enhanced removal of Congo red dye from aqueous solution by surface modified activated carbon with bacteria. J Appl Microbiol 2021; 131:2270-2279. [PMID: 33825288 DOI: 10.1111/jam.15100] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/13/2021] [Accepted: 04/04/2021] [Indexed: 11/30/2022]
Abstract
AIMS The adsorption behaviour and mechanisms of the surface modified activated carbon with bacteria was evaluated. METHODS AND RESULTS 16S rRNA was employed to identify the hydrocarbon-degrading bacteria. The bacteria was characterized by TEM and electron microscope. The surface modified activated carbon with bacteria was characterized by SEM. The adsorption behaviour was tested by static adsorption and dynamic adsorption. CONCLUSION The adsorption efficiency of the modified activated carbon was high when pH was weak acidic, and the adsorption capacity increased with the increase of temperature ranging from 20 to 35°C. The adsorption capacity peaked at 234·6 mg g-1 at 25°C, which was sixfold higher than that of activated carbon. The pseudo-first-order kinetic can more accurately assess Congo red adsorption on the two adsorbents. The adsorption of Congo red by bacteria surface modified activated carbon fitted well with the Langmuir's model. The adsorption process was endothermic, and the biological floccules were formed during the adsorption. The physical adsorption is the main driving force. SIGNIFICANCE AND IMPACT OF THE STUDY The results indicate that the bacteria surface-modified activated carbon can be used effectively as an adsorbent to eliminate Congo red from aqueous solutions.
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Affiliation(s)
- A Wang
- School of Ocean, Yantai University, Yantai, China
| | - C Liu
- School of Ocean, Yantai University, Yantai, China
| | - X Ge
- School of Ocean, Yantai University, Yantai, China
| | - W Meng
- School of Ocean, Yantai University, Yantai, China
| | - Y Pi
- School of Ocean, Yantai University, Yantai, China
| | - C Liu
- School of Chemistry and Materials Science, Ludong University, Yantai, Shandong, China
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Bellaiche M, Fan W, Walbert HJ, Goodnight BJ, Seiling FH, Meng W, Black CM. HSR21-045: Genetic Counselor Coverage Disparities & Inequities in Access to Precision Cancer Care. J Natl Compr Canc Netw 2021. [DOI: 10.6004/jnccn.2020.7717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
| | | | | | | | | | - Weilin Meng
- 2Center for Observational and Real-World Evidence (CORE), Merck & Co., Inc., Kenilworth, NJ
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Zhao C, Hu S, Meng W, Wang S, Chen X, Zeng M, He L, Zhao L, Yu H, Ren X, Zhang S, Hou J, Jia H, Yu B. Impact of macrophage infiltration in patients with st-segment elevation myocardial infarction caused by plaque erosion: an in vivo optical coherence tomography study. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1716] [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
Background
Chronic inflammatory infiltration is a common process for atherosclerosis development. However, autopsy studies reveal that incidence rate of inflammatory infiltrates are less abundant in plaque erosion compared with plaque rupture.
Purpose
Studies performed by optical coherence tomography (OCT) have allowed to establish the severity of plaque inflammation by assessing macrophage infiltration (MØI). In this study, we aimed at assessing the impaction of MØI in plaque erosion among patients with STEMI by using OCT.
Methods
A total of 1561 patients with ST-segment elevation myocardial infarctions (STEMI) who underwent OCT imaging were enrolled in this study. According to the exclusion criteria, 312 patients with STEMI exhibiting plaque erosion were classified as MØI or no MØI.
Results
163 (52.2%) patients had MØI at the site of plaque erosion, whereas 149 (47.8%) patients had no evidence of MØI and patients of MØI group were significantly older (P=0.015). The result of angiography showed the prevalence of multi-vessel disease appeared more frequency (P=0.021) and diameter stenosis% were higher (P=0.031) in MØI group. OCT results showed the minimum fibrous-cap thickness was thinner (P<0.001) and the maximum lipid arc was larger (P=0.005) in MØI group. Some patients underwent imaging follow-up at 1 year. There was no significant difference in the culprit plaque morphology progress among two groups (Figure 1A-1D).
Conclusions
This study demonstrated that plaque inflammation can increase culprit lesion severity and plaque vulnerability in patients with STEMI caused by plaque erosion.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- C Zhao
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - S Hu
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - W Meng
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - S Wang
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - X Chen
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - M Zeng
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - L He
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - L Zhao
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - H Yu
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - X Ren
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - S Zhang
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - J Hou
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - H Jia
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
| | - B Yu
- The 2nd Affiliated Hospital of Harbin Medical University, Department of Cardiology, Harbin, China
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Cui T, Bell E, McElroy J, Liu K, Sebastian E, Johnson B, Gulati P, Becker A, Gray A, Geurts M, Subedi D, Yang L, Fleming J, Meng W, Barnholtz-Sloan J, Wang Q, Robe P, Haque S, Chakravarti A. Identification of a Novel miR-146a-POU3F2/SMARCA5 Pathway in Glioblastoma. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Black C, Meng W, Rajagopalan S. HSR20-077: Determinants of Time to Treatment Initiation in Metastatic Cancers. J Natl Compr Canc Netw 2020. [DOI: 10.6004/jnccn.2019.7433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Meng W, Ou W, Chandwani S, Chen X, Black W, Cai Z. Temporal phenotyping by mining healthcare data to derive lines of therapy for cancer. J Biomed Inform 2019; 100:103335. [PMID: 31689549 DOI: 10.1016/j.jbi.2019.103335] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 10/28/2019] [Accepted: 10/30/2019] [Indexed: 01/29/2023]
Abstract
Lines of therapy (LOT) derived from real-world healthcare data not only depict real-world cancer treatment sequences, but also help define patient phenotypes along the course of disease progression and therapeutic interventions. The sequence of prescribed anticancer therapies can be defined as temporal phenotyping resulting from changes in morphological (tumor staging), biochemical (biomarker testing), physiological (disease progression), and behavioral (physician prescribing and patient adherence) parameters. We introduce a novel methodology that is a two-part approach: 1) create an algorithm to derive patient-level LOT and 2) aggregate LOT information via clustering to derive temporal phenotypes, in conjunction with visualization techniques, within a large insurance claims dataset. We demonstrated the methodology using two examples: metastatic non-small cell lung cancer and metastatic melanoma. First, we generated a longitudinal patient cohort for each cancer type and applied a set of rules to derive patient-level LOT. Then the LOT algorithm outputs for each cancer type were visualized using Sankey plots and K-means clusters based on durations of LOT and of gaps in therapy between LOT. We found differential distribution of temporal phenotypes across clusters. Our approach to identify temporal patient phenotypes can increase the quality and utility of analyses conducted using claims datasets, with the potential for application to multiple oncology disease areas across diverse healthcare data sources. The understanding of LOT as defining patients' temporal phenotypes can contribute to continuous health learning of disease progression and its interaction with different treatment pathways; in addition, this understanding can provide new insights that can be applied by tailoring treatment sequences for the patient phenotypes who will benefit.
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Affiliation(s)
- Weilin Meng
- Center for Observational and Real-World Evidence, Merck & Co., Inc., Kenilworth, NJ 07033, USA.
| | - Wanmei Ou
- Center for Observational and Real-World Evidence, Merck & Co., Inc., Kenilworth, NJ 07033, USA
| | - Sheenu Chandwani
- Center for Observational and Real-World Evidence, Merck & Co., Inc., Kenilworth, NJ 07033, USA
| | - Xin Chen
- Center for Observational and Real-World Evidence, Merck & Co., Inc., Kenilworth, NJ 07033, USA
| | - Wynona Black
- Center for Observational and Real-World Evidence, Merck & Co., Inc., Kenilworth, NJ 07033, USA
| | - Zhaohui Cai
- Center for Observational and Real-World Evidence, Merck & Co., Inc., Kenilworth, NJ 07033, USA
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Exertier P, Belli A, Samain E, Meng W, Zhang H, Tang K, Schlicht A, Schreiber U, Hugentobler U, Prochàzka I, Sun X, McGarry JF, Mao D, Neumann A. Time and laser ranging: a window of opportunity for geodesy, navigation and metrology. J Geod 2019; 93:2389-2404. [PMID: 33867691 PMCID: PMC8051204 DOI: 10.1007/s00190-018-1173-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 07/08/2018] [Indexed: 06/12/2023]
Abstract
Recent progress in the domain of time and frequency (T/F) standards requires important improvements of existing time distribution links. Among these, the accuracy of time transfer is actually an important part of the concerns in order to establish and maintain time & space references from ground and/or space facilities. Several time transfers by laser link projects have been carried out over the past 10 years with numerous scientific and metrological objectives. Satellite Laser ranging (SLR) has proven to be a fundamental tool, offering a straightforward, conceptually simple, highly accurate and unambiguous observable. Depending on the mission, LR is used to transmit time over two-way or one-way distances from 500 to several millions of km. The following missions and their objectives employed this technique: European Laser Timing (ELT) at 450 km, Time Transfer by Laser Link (T2L2) at 1,336 km, Laser Time Transfer (LTT) at 36,000 km, Lunar Reconnaissance Orbiter (LRO) at 350,000 km, and MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) at tens of million km. This article describes the synergy between SLR and T/F technologies developed on the ground and in space and as well as the state of the art of their exploitation. The performance and sources of limitation of such space missions are analyzed. It shows that current and future challenges lie in the improvement of the time accuracy and stability of the time for ground geodetic observatories. The role of the next generation of SLR systems is emphasized both in space and at ground level, from the point of view of GGOS and valuable exploitation of the synergy between time synchronization, ranging and data transfer.
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Affiliation(s)
| | - A Belli
- CNRS-OCA-UNS, Geoazur, France
- NASA Goddard Space Flight Center, USA
| | | | - W Meng
- Shanghai Astronomical Observatory, CAS, China
| | - H Zhang
- Shanghai Astronomical Observatory, CAS, China
| | - K Tang
- Shanghai Astronomical Observatory, CAS, China
| | | | | | | | | | - X Sun
- NASA Goddard Space Flight Center, USA
| | | | - D Mao
- NASA Goddard Space Flight Center, USA
| | - A Neumann
- NASA Goddard Space Flight Center, USA
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Sun Y, Oxnard J, New BJ, Mordi IR, Meng W, Tee A, Palmer CN, McCrimmon R, Doney AS, Lang CC. P5004Peripheral neuropathy and increased risk of heart failure: a population-based longitudinal cohort study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0182] [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: 11/13/2022] Open
Abstract
Abstract
Background
One of the main pathophysiological processes thought to be implicated in the development of diabetic cardiomyopathy is a microvascular disease (MiVD) that is prevalent in type 2 diabetes (T2D). However, the role of MiVD in the development of heart failure (HF) is not known. T2D screening programmes identify three types of MiVD – retinopathy, nephropathy and neuropathy. Both retinopathy and nephropathy have been independently associated with the development of incident HF in observational cohort studies. There is less data on peripheral neuropathy and HF outcomes. This study aimed to determine the independent association of diabetic neuropathy with incident HF events in a large longitudinal population cohort of T2D patients with a detailed clinical follow-up that includes available echocardiographic data.
Design
This was a population-based longitudinal cohort study from the Genetics of Diabetes Audit and Research in Tayside Scotland study (GoDARTS) from 1996 to 2016. A total of 9,598 patients with T2D were included with data available on hospital admissions, prescribing and other clinical variables including age, gender, smoking history, duration of T2D, body mass index, systolic blood pressure, glycosylated haemoglobin (HbA1c), triglyceride, total LDL and HDL cholesterol levels. Neuropathy cases were identified using a well-validated record linkage method utilising neuropathic drug prescription records to identify cases of neuropathic pain and to monofilament testing that is used to diagnose neuropathy.
Results
There were 805 HF events. After adjustment for clinical variables, the presence of painful neuropathy related to a 57% increased risk of incident HF (HR 1.57, 95% CI = 1.32–1.89, p<0.001). A similar risk was also observed with diabetic neuropathy identified by monofilament testing with a 52% (HR 1.52, CI = 1.013–1.225, P<0.05) increased risk of incident HF.
Conclusions and relevance
Peripheral neuropathy, a feature of MiVD, may be pathophysiologically associated with the development of HF in patients with T2D and may be a therapeutic target.
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Affiliation(s)
- Y Sun
- University of Dundee, Dundee, United Kingdom
| | - J Oxnard
- University of Dundee, Dundee, United Kingdom
| | - B J New
- University of Dundee, Dundee, United Kingdom
| | - I R Mordi
- University of Dundee, Dundee, United Kingdom
| | - W Meng
- University of Dundee, Dundee, United Kingdom
| | - A Tee
- University of Dundee, Dundee, United Kingdom
| | - C N Palmer
- University of Dundee, Dundee, United Kingdom
| | - R McCrimmon
- University of Dundee, Dundee, United Kingdom
| | - A S Doney
- University of Dundee, Dundee, United Kingdom
| | - C C Lang
- University of Dundee, Dundee, United Kingdom
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Ouyang G, Yang X, Deng X, Meng W, Yu Y, Wu B, Jiang D, Shu P, Zhou Z, Wang Z, Yao J, Wang X. The Value of Magnetic Resonance Imaging to Assessing Response and Prognosis to Total Neoadjuvant Treatment (TNT) in Locally Advanced Rectal Cancer. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Huang H, Kewisch J, Liu C, Marusic A, Meng W, Méot F, Oddo P, Ptitsyn V, Ranjbar V, Roser T, Schmidke WB. Measurement of the Spin Tune Using the Coherent Spin Motion of Polarized Protons in a Storage Ring. Phys Rev Lett 2019; 122:204803. [PMID: 31172775 DOI: 10.1103/physrevlett.122.204803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Indexed: 06/09/2023]
Abstract
This Letter reports the first spin tune measurement at high energies (24 and 255 GeV) with a driven coherent spin motion. To maintain polarization in a polarized proton collider, it is important to know the spin tune of the polarized proton beam, which is defined as the number of full spin precessions per revolution. A nine-magnet spin flipper has demonstrated high spin-flip efficiency in the presence of two Siberian snakes [H. Huang et al., Phys. Rev. Lett. 120, 264804 (2018).10.1103/PhysRevLett.120.264804]. The spin flipper drives a spin resonance with a given frequency (or tune) and strength. When the drive tune is close to the spin tune, the proton spin direction is not vertical anymore, but precesses around the vertical direction. By measuring the precession frequency of the horizontal component, the spin tune can be precisely measured. A driven coherent spin motion and fast turn-by-turn polarization measurement are keys to the measurement. The vertical spin direction is restored after turning the spin flipper off and the polarization value is not affected by the measurement. The fact that this manipulation preserves the polarization makes it possible to measure the spin tune during the operation of a high energy accelerator.
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Affiliation(s)
- H Huang
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Kewisch
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Liu
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Marusic
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W Meng
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - F Méot
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Oddo
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Ptitsyn
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Ranjbar
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Roser
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W B Schmidke
- Brookhaven National Laboratory, Upton, New York 11973, USA
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37
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Wei SS, Zou YW, Liu ZB, Meng W, Zhao K, Wang SH, Yao LH. Astragalosides modulates contractile function of toad gastrocnemius muscle. J Physiol Pharmacol 2019; 70. [PMID: 31019125 DOI: 10.26402/jpp.2019.1.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 02/28/2019] [Indexed: 06/09/2023]
Abstract
Huangqi (Radix Astragali) is a well-known traditional Chinese herbal medicine, it is an effective treatment for consumptive disease, such as the common cold, diarrhea, fatigue and cardiac diseases. Astragalosides (AST) is the main component of Huangqi. The purpose of this study is to investigate the modulation effect of AST on the skeletal muscle contractile function. Our results showed that the toad gastrocnemius muscle contractile response was significantly increased after the use of AST (25 mg/L, bath for the isolated muscle), which produced a left-ward shift of the contractile force-stimulation intensity curve. Moreover, AST also prevented the repetitive stimulation-induced decrease in muscle contractile force and recovery amplitude of muscle contraction. These results demonstrate that AST can affect contractile performance of toad gastrocnemius muscle and contribute to skeletal muscle anti-fatigue.
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Affiliation(s)
- S-S Wei
- School of Life Science, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi, China
| | - Y-W Zou
- School of Sport Science, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi, China
| | - Z-B Liu
- School of Sport Science, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi, China
| | - W Meng
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi, China
| | - K Zhao
- School of Life Science, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi, China
| | - S-H Wang
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi, China.
| | - L-H Yao
- School of Life Science, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi, China.
- School of Sport Science, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi, China
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38
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Feng Q, Meng W, Wang J, Wang Z, Zhang J, Wang Q, Hou Y, Lu Q. An entirely enclosed scanning tunnelling microscope capable of being fully immersed in liquid helium. J Microsc 2018; 271:293-301. [PMID: 29953615 DOI: 10.1111/jmi.12717] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 04/05/2018] [Accepted: 05/09/2018] [Indexed: 11/28/2022]
Abstract
We present an ultrahigh-vacuum (UHV)-sealed high-stability scanning tunnelling microscope (STM) that can be entirely immersed in liquid helium and readily used in a commercial Dewar or superconducting magnet. The STM head features a horizontal microscanner that can become standalone and ultrastable when the coarse approach inertial motor retracts. Low voltage is enough to operate the STM even at low temperature owing to the powerful motor. It is housed in a tubular chamber of 49 mm outer diameter, which can be pumped via a detachable valve (DV), UHV-sealed and remain sealed after the DV is removed. The entire so-sealed chamber can then be inserted into liquid helium, where in situ sample cleavage is done via vacuum bellow. This allows sample cleavage and STM measurements to take place in better UHV with higher cooling power. Quality atomic resolution images of graphite and charge density wave on 1T-TiSe2 taken in ambient and 14 K conditions, respectively, are presented.
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Affiliation(s)
- Q Feng
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, People's Republic of China.,Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and Hefei Science Center, Chinese Academy of Sciencesa, Hefei, People's Republic of China
| | - W Meng
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and Hefei Science Center, Chinese Academy of Sciencesa, Hefei, People's Republic of China
| | - J Wang
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and Hefei Science Center, Chinese Academy of Sciencesa, Hefei, People's Republic of China
| | - Z Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, People's Republic of China.,Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and Hefei Science Center, Chinese Academy of Sciencesa, Hefei, People's Republic of China
| | - J Zhang
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and Hefei Science Center, Chinese Academy of Sciencesa, Hefei, People's Republic of China
| | - Q Wang
- Research Center of Laser Fusion China Academy of Engineering Physics, Mianyang, Sichuan, People's Republic of China
| | - Y Hou
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and Hefei Science Center, Chinese Academy of Sciencesa, Hefei, People's Republic of China
| | - Q Lu
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, People's Republic of China.,Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and Hefei Science Center, Chinese Academy of Sciencesa, Hefei, People's Republic of China.,Collaborative Innovation Center for Artificial Microstructure and Quantum Control, Nanjing, People's Republic of China
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39
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Huang H, Kewisch J, Liu C, Marusic A, Meng W, Méot F, Oddo P, Ptitsyn V, Ranjbar V, Roser T. High Spin-Flip Efficiency at 255 GeV for Polarized Protons in a Ring With Two Full Siberian Snakes. Phys Rev Lett 2018; 120:264804. [PMID: 30004736 DOI: 10.1103/physrevlett.120.264804] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Indexed: 06/08/2023]
Abstract
In polarized proton collision experiments, it is highly advantageous to flip the spin of each bunch of protons during the stores to reduce the systematic errors. Experiments done at energies less than 2 GeV have demonstrated a spin-flip efficiency over 99%. At high energy colliders with Siberian snakes, a single magnet spin flipper does not work because of the large spin tune spread and the generation of multiple, overlapping resonances. A more sophisticated spin flipper, constructed of nine-dipole magnets, was used to flip the spin in the BNL Relativistic Heavy Ion Collider. A special optics choice was also used to make the spin tune spread very small. A 97% spin-flip efficiency was measured at both 24 and 255 GeV. These results show that efficient spin flipping can be achieved at high energies using a nine-magnet spin flipper.
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Affiliation(s)
- H Huang
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - J Kewisch
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Liu
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Marusic
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W Meng
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - F Méot
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Oddo
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Ptitsyn
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Ranjbar
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Roser
- Brookhaven National Laboratory, Upton, New York 11973, USA
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40
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Meng W, Veluchamy A, Hébert H, Campbell A, Colhoun H, Palmer C. A genome-wide association study suggests that MAPK14 is associated with diabetic foot ulcers. Br J Dermatol 2017; 177:1664-1670. [PMID: 28672053 PMCID: PMC5829525 DOI: 10.1111/bjd.15787] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/27/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Diabetic foot ulcers (DFUs) are a devastating complication of diabetes. OBJECTIVES To identify genetic contributors to the development of DFUs in the presence of peripheral neuropathy in a Scottish cohort with diabetes using a genome-wide association study. METHODS A genome-wide association approach was applied. A case was defined as a person with diabetes (type 1 or type 2) who had ever had a foot ulcer (current or previous) in at least one foot, as well as a positive monofilament test result (i.e. evidence of peripheral neuropathy) recorded in their longitudinal e-health records. A control was defined as an individual with diabetes (type 1 or type 2) who has never been recorded as having a foot ulcer in either foot but who had a positive monofilament test result recorded in either foot in their longitudinal e-health records. RESULTS There were 699 DFU cases and 2695 controls in the Genetics of Diabetes Audit and Research in Tayside Scotland (GoDARTS) dataset. The single-nucleotide polymorphism rs80028505 (Chr6p21·31) in MAPK14 reached genome-wide significance with a lowest P-value of 2·45 × 10-8 . The narrow-sense heritability of this phenotype is 0·06. CONCLUSIONS We suggest that MAPK14 is associated with DFUs.
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Affiliation(s)
- W. Meng
- Division of Population Health SciencesNinewells Hospital and School of MedicineUniversity of DundeeDundeeDD2 4BFU.K.
| | - A. Veluchamy
- Division of Population Health SciencesNinewells Hospital and School of MedicineUniversity of DundeeDundeeDD2 4BFU.K.
| | - H.L. Hébert
- Division of Population Health SciencesNinewells Hospital and School of MedicineUniversity of DundeeDundeeDD2 4BFU.K.
| | - A. Campbell
- Division of Population Health SciencesNinewells Hospital and School of MedicineUniversity of DundeeDundeeDD2 4BFU.K.
| | - H.M. Colhoun
- Institute of Genetics and Molecular MedicineWestern General Hospital, Crewe RoadUniversity of EdinburghEdinburghU.K.
| | - C.N.A. Palmer
- Centre for Pharmacogenetics and PharmacogenomicsNinewells Hospital and School of MedicineUniversity of DundeeDundeeDD2 4BFU.K.
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41
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Zhang J, Meng W, Wang J, Ge W, Hou Y, Lu Q. Note: A highly symmetrical piezoelectric motor with self-matching friction and large output force. Rev Sci Instrum 2017; 88:116104. [PMID: 29195396 DOI: 10.1063/1.5013119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We present a new stacked TunaDrive motor with two intact piezoelectric stacks being spring-clamped by a pair of parallel highly polished zirconia ceramic rods. Compared with the earlier version we presented with five stacks, it has a simpler and more compact structure and is much easier to build. Although the usage of piezoelectric material is cut by ∼35%, the motor can still provide a large output force of ∼1.92 N, which is nearly the same as that of the earlier version. The simple and symmetrical structure, high rigidity, and large output force make the new motor an ideal tool for coarse approach with nanometer precision.
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Affiliation(s)
- J Zhang
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of the Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
| | - W Meng
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of the Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
| | - J Wang
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of the Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
| | - W Ge
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Y Hou
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of the Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
| | - Q Lu
- Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory of the Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
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42
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Meng W, Hebert H, Palmer C. A genome-wide association study suggests that the NADPH Oxidase 4 (NOX4) gene is associated with severe diabetic retinopathy in a Scottish diabetic population. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.02182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- W. Meng
- Population Health Sciences; University of Dundee; Dundee UK
| | - H. Hebert
- Population Health Sciences; University of Dundee; Dundee UK
| | - C. Palmer
- Centre for Pharmacogenetics and Pharmacogenomics; University of Dundee; Dundee UK
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43
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Zhang HD, Meng W, Gong SC, Liu YQ, Zhang QX, He SB, Yu ZK, Zhou WG. [Preliminary study on the expression of CD4⁺CD25⁺Tregs and Foxp3 in peripheral blood of patients with head and neck squamous cell carcinoma]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1009-1012. [PMID: 29798165 DOI: 10.13201/j.issn.1001-1781.2017.13.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Indexed: 11/12/2022]
Abstract
Objective:This paper discusses the expression and significance of CD4⁺CD25⁺ Tregs and Foxp3 in peripheral blood of patients with head and neck squamous cell carcinoma. Method:We have collected 40 cases of head and neck squamous cell carcinoma patients with newly diagnosed or relapse after treatment, all of them underwent surgery, 39 males and 1 females, aged 41-79 years, in our department from January 2014 to December 2015. At the same time, 10 healthy volunteers are enrolled as control group. 2 ml peripheral blood has been detected by flow cytometry, and the ratio of CD4⁺CD25⁺/CD4⁺ and CD4⁺CD25⁺Fxop3⁺/CD4⁺ are calculated, respectively. SPSS 23.0 is used for statistical analysis. Result:CD4⁺CD25⁺ Tregs is highly expressed in head and neck tumors, compared with that in the healthy control, and the difference is statistically significant (P<0.01). There is significant difference between the early and late stage (P<0.05). The positive rate of Foxp3+ is higher in CD4⁺CD25⁺ Tregs positive cells than in control group (P<0.01). The difference of positive rate between late stage and early stage head and neck tumors is statistically significant (P<0.05). There is a significant positive correlation between CD4⁺CD25⁺ Tregs and Foxp3 (r=0.95). Conclusion:CD4⁺CD25⁺ Tregs and Foxp3 are highly expressed in the peripheral blood of patients with head and neck squamous cell carcinoma. Through the inhibition of the immune system in patients with head and neck squamous cell carcinoma, the development of carcinoma were promoted.
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Affiliation(s)
- H D Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Nanjing Tongren Hospital, School of Medicine, Southeast University, Nanjing, 211100, China
| | - W Meng
- Department of Otorhinolaryngology Head and Neck Surgery, Nanjing Tongren Hospital, School of Medicine, Southeast University, Nanjing, 211100, China
| | - S C Gong
- Department of Otorhinolaryngology Head and Neck Surgery, Nanjing Tongren Hospital, School of Medicine, Southeast University, Nanjing, 211100, China
| | - Y Q Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Nanjing Tongren Hospital, School of Medicine, Southeast University, Nanjing, 211100, China
| | - Q X Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Nanjing Tongren Hospital, School of Medicine, Southeast University, Nanjing, 211100, China
| | - S B He
- Department of Otorhinolaryngology Head and Neck Surgery, Nanjing Tongren Hospital, School of Medicine, Southeast University, Nanjing, 211100, China
| | - Z K Yu
- Department of Otorhinolaryngology Head and Neck Surgery, Nanjing Tongren Hospital, School of Medicine, Southeast University, Nanjing, 211100, China
| | - W G Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University
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Zu M, Meng W, Guo Q, Liu Z. Deep infiltrating endometriosis in young women. CLIN EXP OBSTET GYN 2017. [DOI: 10.12891/ceog3047.2017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Zu M, Meng W, Guo QZ, Liu ZQ. Deep infiltrating endometriosis in young women. CLIN EXP OBSTET GYN 2017; 44:268-271. [PMID: 29746036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This work aimed to analyze the effect of deep infiltrating endometriosis (DIE) in young women. Twenty-seven cases of patients (below 38-years-old) diagnosed with DIE and admitted to the present hospital from January 2008 to July 2014 were reviewed, and their pre- and postoperative states of illness were summarized. The main preoperative symptoms included dysmenorrhea, chronic pelvic pain, dyspareunia, nodule in rectouterine fossa, and reduced level of fertility. All patients underwent surgery (17 laparoscopies and ten laparotomies). Postoperative pathological explanation confirmed DIE in lesions. DIE significantly affects the health of young women.
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Meng W, Kallinteri P, Walker DA, Parker TL, Garnett MC. Evaluation of Poly (Glycerol-Adipate) Nanoparticle Uptake in an In Vitro 3-D Brain Tumor Co-Culture Model. Exp Biol Med (Maywood) 2016; 232:1100-8. [PMID: 17720956 DOI: 10.3181/0612-rm-301] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Despite the inherent problems associated with in vivo animal models of tumor growth and metastases, many of the current in vitro brain tumor models also do not accurately mimic tumor-host brain interactions. Therefore, there is a need to develop such co-culture models to study tumor biology and, importantly, the efficacy of drug delivery systems targeting the brain. So far, few investigations of this nature have been published. In this paper we describe the development of a new model system and its application to drug delivery assessment. For our new model, a co-culture of DAOY cell brain tumor aggregates and organo-typic brain slices was developed. Initially, the DAOY aggregates attached to cerebellum slices and invaded as a unit. Single cells in the periphery of the aggregate detached from the DAOY aggregates and gradually replaced normal brain cells. This invasive behavior of DAOY cells toward organotypic cerebellum slices shows a similar pattern to that seen in vivo. After validation of the co-culture model using transmission electron microscopy, nanoparticle (NP) uptake was then evaluated. Confocal micrographs illustrated that DAOY cells in this co-culture model took up most of the NPs, but few NPs were distributed into brain cells. This finding corresponded with results of NP uptake in DAOY and brain aggregates reported elsewhere.
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Affiliation(s)
- W Meng
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, United Kingdom
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Anastassopoulos V, Andrianov S, Baartman R, Baessler S, Bai M, Benante J, Berz M, Blaskiewicz M, Bowcock T, Brown K, Casey B, Conte M, Crnkovic JD, D'Imperio N, Fanourakis G, Fedotov A, Fierlinger P, Fischer W, Gaisser MO, Giomataris Y, Grosse-Perdekamp M, Guidoboni G, Hacıömeroğlu S, Hoffstaetter G, Huang H, Incagli M, Ivanov A, Kawall D, Kim YI, King B, Koop IA, Lazarus DM, Lebedev V, Lee MJ, Lee S, Lee YH, Lehrach A, Lenisa P, Levi Sandri P, Luccio AU, Lyapin A, MacKay W, Maier R, Makino K, Malitsky N, Marciano WJ, Meng W, Meot F, Metodiev EM, Miceli L, Moricciani D, Morse WM, Nagaitsev S, Nayak SK, Orlov YF, Ozben CS, Park ST, Pesce A, Petrakou E, Pile P, Podobedov B, Polychronakos V, Pretz J, Ptitsyn V, Ramberg E, Raparia D, Rathmann F, Rescia S, Roser T, Kamal Sayed H, Semertzidis YK, Senichev Y, Sidorin A, Silenko A, Simos N, Stahl A, Stephenson EJ, Ströher H, Syphers MJ, Talman J, Talman RM, Tishchenko V, Touramanis C, Tsoupas N, Venanzoni G, Vetter K, Vlassis S, Won E, Zavattini G, Zelenski A, Zioutas K. A storage ring experiment to detect a proton electric dipole moment. Rev Sci Instrum 2016; 87:115116. [PMID: 27910557 DOI: 10.1063/1.4967465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 10/27/2016] [Indexed: 06/06/2023]
Abstract
A new experiment is described to detect a permanent electric dipole moment of the proton with a sensitivity of 10-29 e ⋅ cm by using polarized "magic" momentum 0.7 GeV/c protons in an all-electric storage ring. Systematic errors relevant to the experiment are discussed and techniques to address them are presented. The measurement is sensitive to new physics beyond the standard model at the scale of 3000 TeV.
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Affiliation(s)
- V Anastassopoulos
- Department of Physics, University of Patras, 26500 Rio-Patras, Greece
| | - S Andrianov
- Faculty of Applied Mathematics and Control Processes, Saint-Petersburg State University, Saint-Petersburg, Russia
| | - R Baartman
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T2A3, Canada
| | - S Baessler
- Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
| | - M Bai
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - J Benante
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Berz
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - M Blaskiewicz
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Bowcock
- Department of Physics, University of Liverpool, Liverpool, United Kingdom
| | - K Brown
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - B Casey
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - M Conte
- Physics Department and INFN Section of Genoa, 16146 Genoa, Italy
| | - J D Crnkovic
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - N D'Imperio
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Fanourakis
- Institute of Nuclear and Particle Physics NCSR Demokritos, GR-15310 Aghia Paraskevi Athens, Greece
| | - A Fedotov
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - P Fierlinger
- Technical University München, Physikdepartment and Excellence-Cluster "Universe," Garching, Germany
| | - W Fischer
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M O Gaisser
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Y Giomataris
- CEA/Saclay, DAPNIA, 91191 Gif-sur-Yvette Cedex, France
| | - M Grosse-Perdekamp
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - G Guidoboni
- University of Ferrara, INFN of Ferrara, Ferrara, Italy
| | - S Hacıömeroğlu
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - G Hoffstaetter
- Laboratory for Elementary-Particle Physics, Cornell University, Ithaca, New York 14853, USA
| | - H Huang
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Incagli
- Physics Department, University and INFN Pisa, Pisa, Italy
| | - A Ivanov
- Faculty of Applied Mathematics and Control Processes, Saint-Petersburg State University, Saint-Petersburg, Russia
| | - D Kawall
- Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003, USA
| | - Y I Kim
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - B King
- Department of Physics, University of Liverpool, Liverpool, United Kingdom
| | - I A Koop
- Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
| | - D M Lazarus
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - V Lebedev
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - M J Lee
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - S Lee
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Y H Lee
- Korea Research Institute of Standards and Science, Daejeon 34141, South Korea
| | - A Lehrach
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - P Lenisa
- University of Ferrara, INFN of Ferrara, Ferrara, Italy
| | - P Levi Sandri
- Laboratori Nazionali di Frascati, INFN, I-00044 Frascati, Rome, Italy
| | - A U Luccio
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Lyapin
- Royal Holloway, University of London, Egham, Surrey, United Kingdom
| | - W MacKay
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R Maier
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - K Makino
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - N Malitsky
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W J Marciano
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - W Meng
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - F Meot
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - E M Metodiev
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - L Miceli
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - D Moricciani
- Dipartimento di Fisica dell'Univ. di Roma "Tor Vergata" and INFN Sezione di Roma Tor Vergata, Rome, Italy
| | - W M Morse
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - S Nagaitsev
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - S K Nayak
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Y F Orlov
- Laboratory for Elementary-Particle Physics, Cornell University, Ithaca, New York 14853, USA
| | - C S Ozben
- Istanbul Technical University, Istanbul 34469, Turkey
| | - S T Park
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - A Pesce
- University of Ferrara, INFN of Ferrara, Ferrara, Italy
| | - E Petrakou
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - P Pile
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - B Podobedov
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | | | - J Pretz
- RWTH Aachen University and JARA-Fame, III. Physikalisches Institut B, Physikzentrum, 52056 Aachen, Germany
| | - V Ptitsyn
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - E Ramberg
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - D Raparia
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - F Rathmann
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - S Rescia
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - T Roser
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - H Kamal Sayed
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Y K Semertzidis
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - Y Senichev
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - A Sidorin
- Joint Institute for Nuclear Research, Dubna, Moscow region, Russia
| | - A Silenko
- Joint Institute for Nuclear Research, Dubna, Moscow region, Russia
| | - N Simos
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Stahl
- RWTH Aachen University and JARA-Fame, III. Physikalisches Institut B, Physikzentrum, 52056 Aachen, Germany
| | - E J Stephenson
- Indiana University Center for Spacetime Symmetries, Bloomington, Indiana 47405, USA
| | - H Ströher
- Institut für Kernphysik and JARA-Fame, Forschungszentrum Jülich, 52425 Jülich, Germany
| | - M J Syphers
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - J Talman
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - R M Talman
- Laboratory for Elementary-Particle Physics, Cornell University, Ithaca, New York 14853, USA
| | - V Tishchenko
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Touramanis
- Department of Physics, University of Liverpool, Liverpool, United Kingdom
| | - N Tsoupas
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - G Venanzoni
- Laboratori Nazionali di Frascati, INFN, I-00044 Frascati, Rome, Italy
| | - K Vetter
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - S Vlassis
- Department of Physics, University of Patras, 26500 Rio-Patras, Greece
| | - E Won
- Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon 34141, South Korea
| | - G Zavattini
- University of Ferrara, INFN of Ferrara, Ferrara, Italy
| | - A Zelenski
- Brookhaven National Laboratory, Upton, New York 11973, USA
| | - K Zioutas
- Department of Physics, University of Patras, 26500 Rio-Patras, Greece
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Ye LX, Fu CW, Jiang F, Meng W. [Association between IKZF3 gene polymorphisms and systemic lupus erythematosus in Han ethnic group in southern China: a case-control study]. Zhonghua Liu Xing Bing Xue Za Zhi 2016; 37:996-1002. [PMID: 27453112 DOI: 10.3760/cma.j.issn.0254-6450.2016.07.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To understand the association between IKZF3 gene polymorphism and the risk of systemic lupus erythematosus(SLE)in Han ethnic group in southern China. METHODS A case-control study was conducted among 213 SLE patients and 234 healthy controls. Venous blood samples were collected from them to measure single nucleotide polymorphism(SNP)in IKZF3 by using the method of restriction fragment length polymorphism(PCR-RFLP). Multivariate logistic analysis and generalized multifactor dimensionality reduction(GMDR)method were used under multiple genetic models(additive, dominant, recessive), to analyze the association between IKZF3 and SLE susceptibility or different clinical features and gene-gene interactions. In addition, bioinformatics analysis was also conducted. RESULTS As for rs114509391, CA genotype might decrease the risk of SLE compared with AA genotype(OR=0.14, 95%CI: 0.03-0.56, P=0.006)and significant association was also observed under dominant model(OR=0.26, 95%CI: 0.09-0.81, P=0.02). Stratified analysis indicated that rs9635726 and rs9909593 were related to SLE onset. The study of clinical features showed that rs907091 was associated with both renal disorder(additive: OR=0.59, 95%CI: 0.35-0.98, P=0.043)and anti-SSB(dominant: OR=0.41, 95%CI: 0.18-0.96, P=0.040). rs9635726 GG and GA genotype might decrease the risk of anti-SSB compared with AA genotype(OR=0.37, 95%CI:0.16-0.88, P=0.025). In addition, bioinformatics analysis indicated that all the studied SNPs were functional. CONCLUSION IKZF3 rs114509391, rs9635726 and rs9909593 polymorphisms might be related to SLE susceptibility in Han ethnic group in southern China and rs9909593, rs907091 might be associated with renal disorder and anti-SSB.
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Affiliation(s)
- L X Ye
- Key Laboratory of Public Health Safety, Ministry of Education-Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China; Institute of Immunological Prevention, Ningbo Prefecture Center for Disease Control and Prevention, Ningbo 315010, China
| | - C W Fu
- Key Laboratory of Public Health Safety, Ministry of Education-Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China
| | - F Jiang
- Key Laboratory of Public Health Safety, Ministry of Education-Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China
| | - W Meng
- Key Laboratory of Public Health Safety, Ministry of Education-Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China
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Meng W, Deshmukh HA, van Zuydam NR, Liu Y, Donnelly LA, Zhou K, Morris AD, Colhoun HM, Palmer CNA, Smith BH. A genome-wide association study suggests an association of Chr8p21.3 (GFRA2) with diabetic neuropathic pain. Eur J Pain 2015; 19:392-9. [PMID: 24974787 PMCID: PMC4737240 DOI: 10.1002/ejp.560] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2014] [Indexed: 12/19/2022]
Abstract
Background Neuropathic pain, caused by a lesion or a disease affecting the somatosensory system, is one of the most common complications in diabetic patients. The purpose of this study is to identify genetic factors contributing to this type of pain in a general diabetic population. Method We accessed the Genetics of Diabetes Audit and Research Tayside (GoDARTS) datasets that contain prescription information and monofilament test results for 9439 diabetic patients, among which 6927 diabetic individuals were genotyped by Affymetrix SNP6.0 or Illumina OmniExpress chips. Cases of neuropathic pain were defined as diabetic patients with a prescription history of at least one of five drugs specifically indicated for the treatment of neuropathic pain and in whom monofilament test result was positive for sensory neuropathy in at least one foot. Controls were individuals who did not have a record of receiving any opioid analgesics. Imputation of non‐genotyped SNPs was performed by IMPUTE2, with reference files from 1000 Genomes Phase I datasets. Results After data cleaning and relevant exclusions, imputed genotypes of 572 diabetic neuropathic pain cases and 2491 diabetic controls were used in the Fisher's exact test. We identified a cluster in the Chr8p21.3, next to GFRA2 with a lowest p‐value of 1.77 × 10−7 at rs17428041. The narrow‐sense heritability of this phenotype was 11.00%. Conclusion This genome‐wide association study on diabetic neuropathic pain suggests new evidence for the involvement of variants near GFRA2 with the disorder, which needs to be verified in an independent cohort and at the molecular level.
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Affiliation(s)
- W Meng
- Division of Population Health Sciences, Medical Research Institute, Ninewells Hospital and School of Medicine, University of Dundee, UK
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Meng W, Gu T, Gao LM, Zong ZG, Meng L, Fu ZZ, Guo L. Correlation of cadherin-17 protein expression with clinicopathological features and prognosis of patients with sporadic gastric cancer. ACTA ACUST UNITED AC 2015; 48:1077-86. [PMID: 26421870 PMCID: PMC4661023 DOI: 10.1590/1414-431x20154645] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 04/28/2015] [Indexed: 12/15/2022]
Abstract
This study aimed to explore the correlations between cadherin-17 (CDH17) protein expression and the clinicopathological features and prognosis of patients with sporadic gastric cancer (GC). Nine relevant studies of 1,960 patients were identified using electronic database searches supplemented with a manual search in strict accordance with inclusion and exclusion criteria. Statistical analyses were conducted using STATA 12.0 statistical software. Relative risks and 95% confidence intervals were determined, and Z test was used to measure the significance of the overall effect size. A total of nine eligible cohort studies were included in this meta-analysis. The expression of CDH17 in patients with diffuse GC was significantly higher than in those with intestinal-type GC. Moreover, the tumor depth of invasion differed significantly between patients with positive CDH17 (CDH17+) and negative CDH17 (CDH17-) GC. However, there were no significant differences between CDH17+ and CDH17- GC patients with respect to tumor node metastasis clinical stages, histological grades, or lymph node metastasis. Despite the differences in invasive depth, there was no significant difference in 5-year survival rates between CDH17+ and CDH17- GC patients. Our meta-analysis provides evidence that CDH17 protein expression may be associated with the development of GC, suggesting that CDH17 is an important biomarker that could be useful for the early diagnosis of GC. However, CDH17 levels do not appear to impact overall survival.
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Affiliation(s)
- W Meng
- First Affiliated Hospital, Hebei North University, Zhangjiakou, Hebei Province, China
| | - T Gu
- Department of Medical Oncology, First Hospital of Qinhuangdao, Qinhuangdao, Hebei Province, China
| | - L M Gao
- Department of Medical Oncology, First Hospital of Qinhuangdao, Qinhuangdao, Hebei Province, China
| | - Z G Zong
- First Affiliated Hospital, Hebei North University, Zhangjiakou, Hebei Province, China
| | - L Meng
- Department of Anesthesiology, Guilin Medical University, Guilin, Guangxi Province, China
| | - Z Z Fu
- Department of Medical Oncology, First Hospital of Qinhuangdao, Qinhuangdao, Hebei Province, China
| | - L Guo
- School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
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