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Wu P, Chew-Graham C, Maas A, Chappell L, Potts J, Gulati M, Jordan K, Mamas M. Hypertensive disorders of pregnancy and impact on in-hospital cardio-obstetric outcomes. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Hypertensive disorders of pregnancy (HDP) are a major cause of maternal morbidity. However, short-term outcomes of HDP subgroups remain unknown.
Methods
Using the United States National Inpatient Sample database, all delivery hospitalizations between 2004 and 2014 with or without HDP (preeclampsia/eclampsia, chronic hypertension, superimposed preeclampsia on chronic hypertension and gestational hypertension) were analysed to examine the association between HDP and adverse in-hospital outcomes.
Results
We identified >44 million delivery hospitalizations, within which the prevalence of HDP increased from 8% to 11% over a decade with increasing comorbidity burden. Women with chronic hypertension have higher risks of myocardial infarction, peripartum cardiomyopathy, arrhythmia and stillbirth compared to women with preeclampsia. Out of all HDP subgroups, the superimposed preeclampsia population had the highest risk of stroke (OR 7.83, 95% CI 6.25, 9.80), myocardial infarction (OR 5.20, 95% CI 3.11, 8.69), peripartum cardiomyopathy (OR 4.37, 95% CI 3.64, 5.26), preterm birth (OR 4.65, 95% CI 4.48, 4.83), placental abruption (OR 2.22, 95% CI 2.09, 2.36), and stillbirth (OR 1.78, 95% CI 1.66, 1.92) compared to women without HDP. In conclusion, we are the first to evaluate chronic SH without superimposed preeclampsia as a distinct subgroup in HDP and show that women with chronic SH are at even higher risk of some adverse outcomes compared to women with preeclampsia.
Conclusion
The chronic hypertension population, with and without superimposed preeclampsia, is a particularly high risk group and may benefit from increased antenatal surveillance and the use of a prognostic risk assessment model incorporating HDP to stratify intrapartum care.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): NIHR
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Affiliation(s)
- P Wu
- Keele University, School of Primary, Social and Community Care, Stoke-on-Trent, United Kingdom
| | - C Chew-Graham
- Keele University, School of Primary, Social and Community Care, Stoke-on-Trent, United Kingdom
| | - A Maas
- University Medical Center St Radboud (UMCN), Nijmegen, Netherlands (The)
| | - L Chappell
- University College London, London, United Kingdom
| | - J Potts
- Keele University, School of Primary, Social and Community Care, Stoke-on-Trent, United Kingdom
| | - M Gulati
- University of Arizona, Phoenix, United States of America
| | - K Jordan
- Keele University, School of Primary, Social and Community Care, Stoke-on-Trent, United Kingdom
| | - M Mamas
- Keele University, School of Primary, Social and Community Care, Stoke-on-Trent, United Kingdom
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52
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Byun D, Wu P, Nagar H, Gerber N. Overutilization of Bilateral Mastectomies and Underutilization in Endocrine Therapy in Ductal Carcinoma in Situ in Young Women: Any Benefit to Survival? Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1072] [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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53
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Liu ZY, Peng XW, Li Z, Zhou B, Lyu CL, Wu P, Tang YY, Peng W, Li H, Ou Y. [Application of a small drainage tube in transoral endoscopic thyroidectomy vestibular approach]. Zhonghua Wai Ke Za Zhi 2020; 58:870-875. [PMID: 33120451 DOI: 10.3760/cma.j.cn112139-20191026-00531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To examine the feasibility of small drain in transoral endoscopic thyroidectomy vestibular approach (TOETVA). Methods: A prospective research was performed in Department of Oncology Plastic Surgery/Head and Neck Surgery, Hunan Cancer Hospital, from October 2018 to March 2019. Totally 103 patients who met the inclusion and exclusion criteria, signed the operation agreement of TOETVA, had their surgery completed and followed-up over 6 months, were enrolled in analysis. A central venous catheter was used as a drain tube in all cases (outer diameter 1.7 mm, inner diameter 1.0 mm). Visual analogue scale (VAS) was applied for assessing pain scores during the first 24 hours after the operation. Vancouver scar scale (VSS) was used for assessing the scar left by the drainage. The drainage volume (minimum scale:10 ml, approximate read: 1 ml) was recorded every 2 hours during the first postoperative 12 hours, every 4 hours during 12 to 24 hours, every 8 hours during 24 to 48 hours, and once from 48 hours until extubation. The volume of drainage, the cumulative volume and the percentage of cumulative volume accounting for the total volume were calculated. The data of residual volume (subtract the cumulative volume from the total volume) in the postoperative 24, 32 and 40 hours were analyzed, and their upper one-side P(95) was calculated by percentile method. Results: There were 12 males and 91 females. The age was (36.6±9.7) years (range: 18 to 58 years). The intraoperative tube-inserting time was (10.1±2.6) minutes (range: 6 to 18 minutes). The pain score on the first day was 2.7±1.1 (range: 1 to 5). The extubation time was (2.7±0.5) days (range: 2 to 4 days). VSS scores in the postoperative 1(st) month and 6(th) month were 2.9±1.3 (range: 0 to 7) and 0(2)(M(Q(R))), respectively. The size of the scar was 0 (2.5) mm in the postoperative 6(th) month. Sixty-four patients had no visible scars. There were 5 patients who had postoperative drain-related complications (1 for air leakage, 1 for tube blockage, 3 for subcutaneous hydrop, 2 for regional infection), who were all cured after proper treatment. The total volume of drainage for 98 patients without postoperative drain-related complications was (80.1±12.2) ml (range: 58 to 131 ml). The cumulative drainage within 8 hours accounted for (53.8±4.2)% (range: 41.0% to 62.9%) of the total drainage. The volume of residual fluids in the postoperative 32 hours was estimated to (5.8±2.7) ml (range: 0 to 12 ml,P(95)=10.0 ml). Conclusions: The small drain tubecan be applied in TOETVA, providing a satisfied cosmetic appearance and a reliable drainage. The main exudation period of the wound is within 8 hours after the operation. If a residual volume less than 10 ml is considered to be self-absorbable, the shortest safe extubation point for 95% patients without drain-related complications should be 32 hours after the operation.
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Affiliation(s)
- Z Y Liu
- Department of Oncology Plastic Surgery/Head and Neck Surgery, Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha 410013, China
| | - X W Peng
- Department of Oncology Plastic Surgery/Head and Neck Surgery, Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha 410013, China
| | - Z Li
- Department of Oncology Plastic Surgery/Head and Neck Surgery, Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha 410013, China
| | - B Zhou
- Department of Oncology Plastic Surgery/Head and Neck Surgery, Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha 410013, China
| | - C L Lyu
- Department of Oncology Plastic Surgery/Head and Neck Surgery, Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha 410013, China
| | - P Wu
- Department of Oncology Plastic Surgery/Head and Neck Surgery, Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha 410013, China
| | - Y Y Tang
- Department of Oncology Plastic Surgery/Head and Neck Surgery, Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha 410013, China
| | - W Peng
- Department of Oncology Plastic Surgery/Head and Neck Surgery, Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha 410013, China
| | - H Li
- Department of Oncology Plastic Surgery/Head and Neck Surgery, Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha 410013, China
| | - Y Ou
- Department of Oncology Plastic Surgery/Head and Neck Surgery, Hunan Cancer Hospital, the Affiliated Cancer Hospital of Xiangya Medical School, Central South University, Changsha 410013, China
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Meng Y, Wu P. Profiling of key integration sites from normal cells to cervical cancer by chronological sequencing of cervical samples. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.665] [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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55
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Cao C, Zhi W, Lin S, Wu P. High expression of CCDC106 promotes cervical cancer cell proliferation and migration by p53 degradation despite the HPV16 E6 spliced status. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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56
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Cao C, Lin S, Zhi W, Wu P. Analyses of PTEN gene aberrations and evaluation of the therapeutic potential of mTOR inhibitor in HPV negative cervical carcinoma. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.288] [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: 11/15/2022]
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57
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Affiliation(s)
- M W Fong
- World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - B J Cowling
- World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - G M Leung
- World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - P Wu
- World Health Organization Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
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Song DJ, Li Z, Zhou X, Zhang YX, Peng XW, Zhou B, Lyu CL, Wu P, Tang YY. [A case of using profunda artery perforator flap as an intraoperative salvage for failed deep inferior epigastric artery perforator flap harvesting in autologous breast reconstruction]. Zhonghua Shao Shang Za Zhi 2020; 36:876-879. [PMID: 32972076 DOI: 10.3760/cma.j.cn501120-20190724-00306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
On April 11, 2019, a 36-year-old female patient was admitted to Hunan Cancer Hospital. Five years after the modified radical mastectomy for right breast cancer, she planned to undergo scar releasing and reconstruction of right chest wall and free deep inferior epigastric artery perforator (DIEP) flap transfer, right breast reconstruction, and left breast mastopexy. The defect of right chest wall after scar resection was 18 cm×10 cm. During the operation, the vascular pedicle of DIEP flap was accidentally injured, then the profunda artery perforator flap in left inner thigh was designed for salvage. The size of the flap was 20 cm×11 cm, the thickness was 4.5 cm, the length of perforator vessel pedicle was 7.6 cm, and the weight of the flap was 360 g. The right breast defect was repaired with the transferred flap and the deep cavity was filled. The vascular pedicle of profunda artery was anastomosed with the proximal end of the right internal mammary artery. The blood supply of the flap was good during surgery. The left breast mastopexy was completed at the same time, and the donor site of thigh and abdomen was closed directly. The flap survived well and the donor site healed well after surgery. During the follow-up of 7 months post surgery, the appearance and function of thigh donor site were good, no obvious complications were found, and the reconstructed breast was smaller than the contralateral side. This case suggests that the profunda artery perforator flap could be a valuable option as an alternative for DIEP harvesting failure for autologous breast reconstruction.
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Affiliation(s)
- D J Song
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - Z Li
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - X Zhou
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - Y X Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - X W Peng
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - B Zhou
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - C L Lyu
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - P Wu
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - Y Y Tang
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
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59
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Wu P, Sheth N, Sisniega A, Uneri A, Han R, Vijayan R, Vagdargi P, Kreher B, Kunze H, Kleinszig G, Vogt S, Lo SF, Theodore N, Siewerdsen JH. C-arm orbits for metal artifact avoidance (MAA) in cone-beam CT. Phys Med Biol 2020; 65:165012. [PMID: 32428891 PMCID: PMC8650760 DOI: 10.1088/1361-6560/ab9454] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Metal artifacts present a challenge to cone-beam CT (CBCT) image-guided surgery, obscuring visualization of metal instruments and adjacent anatomy-often in the very region of interest pertinent to the imaging/surgical tasks. We present a method to reduce the influence of metal artifacts by prospectively defining an image acquisition protocol-viz., the C-arm source-detector orbit-that mitigates metal-induced biases in the projection data. The metal artifact avoidance (MAA) method is compatible with simple mobile C-arms, does not require exact prior information on the patient or metal implants, and is consistent with 3D filtered backprojection (FBP), more advanced (e.g. polyenergetic) model-based image reconstruction (MBIR), and metal artifact reduction (MAR) post-processing methods. The MAA method consists of: (i) coarse localization of metal objects in the field-of-view (FOV) via two or more low-dose scout projection views and segmentation (e.g. a simple U-Net) in coarse backprojection; (ii) model-based prediction of metal-induced x-ray spectral shift for all source-detector vertices accessible by the imaging system (e.g. gantry rotation and tilt angles); and (iii) identification of a circular or non-circular orbit that reduces the variation in spectral shift. The method was developed, tested, and evaluated in a series of studies presenting increasing levels of complexity and realism, including digital simulations, phantom experiment, and cadaver experiment in the context of image-guided spine surgery (pedicle screw implants). The MAA method accurately predicted tilted circular and non-circular orbits that reduced the magnitude of metal artifacts in CBCT reconstructions. Realistic distributions of metal instrumentation were successfully localized (0.71 median Dice coefficient) from 2-6 low-dose scout views even in complex anatomical scenes. The MAA-predicted tilted circular orbits reduced root-mean-square error (RMSE) in 3D image reconstructions by 46%-70% and 'blooming' artifacts (apparent width of the screw shaft) by 20-45%. Non-circular orbits defined by MAA achieved a further ∼46% reduction in RMSE compared to the best (tilted) circular orbit. The MAA method presents a practical means to predict C-arm orbits that minimize spectral bias from metal instrumentation. Resulting orbits-either simple tilted circular orbits or more complex non-circular orbits that can be executed with a motorized multi-axis C-arm-exhibited substantial reduction of metal artifacts in raw CBCT reconstructions by virtue of higher fidelity projection data, which are in turn compatible with subsequent MAR post-processing and/or polyenergetic MBIR to further reduce artifacts.
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Affiliation(s)
- P Wu
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States of America
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60
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He H, Cao R, Cao R, Liu XY, Li W, Yu D, Li Y, Liu M, Wu Y, Wu P, Yang JS, Yan Y, Yang J, Zheng ZB, Zhong W, Qin Y. A light- and heat-driven glycal diazidation approach to nitrogenous carbohydrate derivatives with antiviral activity. Org Biomol Chem 2020; 18:6155-6161. [PMID: 32716466 DOI: 10.1039/d0ob01172j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aminated mimetics of 2-keto-3-deoxy-sugar acids such as the anti-influenza clinical drugs oseltamivir (Tamiflu) and zanamivir (Relenza) are important bioactive molecules. Development of synthetic methodologies for accessing such compound collections is highly desirable. Herein, we describe a simple, catalyst-free glycal diazidation protocol enabled by visible light-driven conditions. This new method requires neither acid promoters nor transition-metal catalysts and takes place at ambient temperature within 1-2 hours. Notably, the desired transformations could be promoted by thermal conditions as well, albeit with lower efficacy compared to the light-induced conditions. Different sugar acid-derived glycal templates have been converted into a range of 2,3-diazido carbohydrate analogs by harnessing this mild and scalable approach, leading to the discovery of new antiviral agents.
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Affiliation(s)
- Huan He
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Ruiyuan Cao
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Ruidi Cao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Xiao-Yu Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Wei Li
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Di Yu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Yuexiang Li
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Miaomiao Liu
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Yanmei Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Pingzhou Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Jin-Song Yang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Yunzheng Yan
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Jingjing Yang
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Zhi-Bing Zheng
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Wu Zhong
- National Engineering Research Center for the Emergence Drugs, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China.
| | - Yong Qin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
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61
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Qiu J, Liu D, Chen G, Wang Y, Jiang S, Wu P, Wang G, Lyu X. Microscopic Distribution of Chemical Constituents in the Interlayer Space of OTAC Intercalated Montmorillonite Complex:Molecular Simulation Study. ChemistrySelect 2020. [DOI: 10.1002/slct.202001819] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- J. Qiu
- College of Chemical and Biological Engineering Shandong University of Science and Technology 579 Qianwangang Road, Huangdao District Qingdao, Shandong Province 266590 P. R. China
| | - D. Liu
- College of Safety and Environmental Engineering Shandong University of Science and Technology 579 Qianwangang Road, Huangdao District Qingdao, Shandong Province 266590 P. R. China
| | - G. Chen
- College of Safety and Environmental Engineering Shandong University of Science and Technology 579 Qianwangang Road, Huangdao District Qingdao, Shandong Province 266590 P. R. China
| | - Y. Wang
- College of Safety and Environmental Engineering Shandong University of Science and Technology 579 Qianwangang Road, Huangdao District Qingdao, Shandong Province 266590 P. R. China
| | - S. Jiang
- College of Safety and Environmental Engineering Shandong University of Science and Technology 579 Qianwangang Road, Huangdao District Qingdao, Shandong Province 266590 P. R. China
| | - P. Wu
- College of Chemical and Biological Engineering Shandong University of Science and Technology 579 Qianwangang Road, Huangdao District Qingdao, Shandong Province 266590 P. R. China
| | - G. Wang
- School of Resources Environment and Materials Guangxi University 100 Daxue Road, Xixiangtang District Nanning, Guangxi Zhuang Autonomous Region 530004 P. R. China
| | - X. Lyu
- College of Chemical and Biological Engineering Shandong University of Science and Technology 579 Qianwangang Road, Huangdao District Qingdao, Shandong Province 266590 P. R. China
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Han R, Uneri A, Ketcha M, Vijayan R, Sheth N, Wu P, Vagdargi P, Vogt S, Kleinszig G, Osgood GM, Siewerdsen JH. Multi-body 3D-2D registration for image-guided reduction of pelvic dislocation in orthopaedic trauma surgery. Phys Med Biol 2020; 65:135009. [PMID: 32217833 PMCID: PMC8647002 DOI: 10.1088/1361-6560/ab843c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Surgical reduction of pelvic dislocation is a challenging procedure with poor long-term prognosis if reduction does not accurately restore natural morphology. The procedure often requires long fluoroscopic exposure times and trial-and-error to achieve accurate reduction. We report a method to automatically compute the target pose of dislocated bones in preoperative CT and provide 3D guidance of reduction using routine 2D fluoroscopy. A pelvic statistical shape model (SSM) and a statistical pose model (SPM) were formed from an atlas of 40 pelvic CT images. Multi-body bone segmentation was achieved by mapping the SSM to a preoperative CT via an active shape model. The target reduction pose for the dislocated bone is estimated by fitting the poses of undislocated bones to the SPM. Intraoperatively, multiple bones are registered to fluoroscopy images via 3D-2D registration to obtain 3D pose estimates from 2D images. The method was examined in three studies: (1) a simulation study of 40 CT images simulating a range of dislocation patterns; (2) a pelvic phantom study with controlled dislocation of the left innominate bone; (3) a clinical case study investigating feasibility in images acquired during pelvic reduction surgery. Experiments investigated the accuracy of registration as a function of initialization error (capture range), image quality (radiation dose and image noise), and field of view (FOV) size. The simulation study achieved target pose estimation with translational error of median 2.3 mm (1.4 mm interquartile range, IQR) and rotational error of 2.1° (1.3° IQR). 3D-2D registration yielded 0.3 mm (0.2 mm IQR) in-plane and 0.3 mm (0.2 mm IQR) out-of-plane translational error, with in-plane capture range of ±50 mm and out-of-plane capture range of ±120 mm. The phantom study demonstrated 3D-2D target registration error of 2.5 mm (1.5 mm IQR), and the method was robust over a large dose range, down to 5 [Formula: see text]Gy/frame (an order of magnitude lower than the nominal fluoroscopic dose). The clinical feasibility study demonstrated accurate registration with both preoperative and intraoperative radiographs, yielding 3.1 mm (1.0 mm IQR) projection distance error with robust performance for FOV ranging from 340 × 340 mm2 to 170 × 170 mm2 (at the image plane). The method demonstrated accurate estimation of the target reduction pose in simulation, phantom, and a clinical feasibility study for a broad range of dislocation patterns, initialization error, dose levels, and FOV size. The system provides a novel means of guidance and assessment of pelvic reduction from routinely acquired preoperative CT and intraoperative fluoroscopy. The method has the potential to reduce radiation dose by minimizing trial-and-error and to improve outcomes by guiding more accurate reduction of joint dislocations.
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Affiliation(s)
- R Han
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, United States of America
| | - A Uneri
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, United States of America
| | - M Ketcha
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, United States of America
| | - R Vijayan
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, United States of America
| | - N Sheth
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, United States of America
| | - P Wu
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, United States of America
| | - P Vagdargi
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, United States of America
| | - S Vogt
- Siemens Healthineers, Erlangen, Germany
| | | | - G M Osgood
- Department of Orthopaedic Surgery, The Johns Hopkins Hospital, Baltimore, MD, United States of America
| | - J H Siewerdsen
- Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD, United States of America
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63
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Song DJ, Li Z, Zhou X, Zhang YX, Peng XW, Feng G, Zhou B, Lyu CL, Wu P, Tang YY, Peng W, Mao HX, Liu ZY, Han WQ, Chen YL, Tang DH, Zhou YJ, Zhang KQ. [Selection and effects of flap/myocutaneous flap repair methods for the defect after perineum tumor resection]. Zhonghua Shao Shang Za Zhi 2020; 36:451-457. [PMID: 32594704 DOI: 10.3760/cma.j.cn501120-20190320-00129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the selection and effects of flap/myocutaneous flap repair methods for the defect after perineum tumor resection. Methods: From January 2011 to February 2017, 31 patients with vulvar tumor who were admitted to Hunan Cancer Hospital underwent repair of wound after tumor resection with various flaps/myocutaneous flaps. The patients were composed of 5 males and 26 females, aged 39-76 years, with 27 vulvar cancer and 4 Paget's disease in primary diseases. The size of defects after vulvar tumor radical resection ranged from 8.0 cm×4.5 cm to 27.5 cm×24.0 cm. According to the theory of perforasome, the defects were repaired by the external pudendal artery perforator flap, deep inferior epigastric artery perforator flap, rectus abdominis myocutaneous flap, anterolateral thigh flap, internal pudendal artery perforator flap, gracilis myocutaneous flap, and profunda artery perforator flap based on the specific size and location of perineum and groin where the defect was located. According to the blood supply zone of flap, totally 17 local translocation flaps, 18 axial flaps/myocutaneous flaps, and 7 V-Y advancement flaps were resected, with an area of 7.0 cm×4.0 cm to 21.0 cm×13.0 cm. All the flaps/myocutaneous flaps were transferred in pedicled fashion, and the donor sites were closed without tension. The number of flaps/myocutaneous flaps, wound closure, flaps/myocutaneous flaps survival, and follow-up were observed and recorded. Results: Altogether 42 flaps/myocutaneous flaps were harvested in 31 patients. Two flaps/myocutaneous flaps were used in 11 cases for large circular defect repair. All the defects achieved tension-free primary closure. The blood supply of 32 flaps/myocutaneous flaps was good, while insufficient blood supply was noted in the other 10 flaps/myocutaneous flaps. Seventeen flaps/myocutaneous flaps survived smoothly. Wound dehiscence occurred in 5 flaps/myocutaneous flaps 8 to 14 days postoperatively, which was healed with dressing change. Temporary congestion was noted in 7 flaps/myocutaneous flaps 2 to 5 days postoperatively, which recovered without special treatment. Three flaps/myocutaneous flaps had infection 7 to 15 days postoperatively, two of which recovered after dressing change, while the other one had partial necrosis and received debridement and direct closure. Two flaps/myocutaneous flaps were totally necrotic 8 to 15 days postoperatively, which were repaired with pedicled rectus abdominis myocutaneous flap after debridement. Seven flaps/myocutaneous flaps had partial necrosis 7 to 20 days postoperatively and were healed after dressing change. Twenty-four patients were followed up for 9-38 months. The color of flaps/myocutaneous flaps was similar to that of the surrounding skin, the shape of vulva was natural, the movement of hip joint was not limited, the function of micturition and defecation was not affected, and tumor recurrence was noted in 3 patients. Conclusions: For the complicated large defect after perineum tumor resection, the flexible application of different forms of flaps/myocutaneous flaps to repair according to different areas regains the appearance and function. However, there are many complications, so it is necessary to further strengthen the postoperative care.
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Affiliation(s)
- D J Song
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - Z Li
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - X Zhou
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - Y X Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - X W Peng
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - G Feng
- Department of Burns and Plastic Surgery, the Fourth Medical Center of PLA General Hospital, Beijing 100048, China
| | - B Zhou
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - C L Lyu
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - P Wu
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - Y Y Tang
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - W Peng
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - H X Mao
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - Z Y Liu
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - W Q Han
- Department of Urology Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - Y L Chen
- Department of Gynecologic Oncology, Hunan Cancer Hospital, Changsha 410008, China
| | - D H Tang
- Department of Gynecologic Oncology, Hunan Cancer Hospital, Changsha 410008, China
| | - Y J Zhou
- Department of Gynecologic Oncology, Hunan Cancer Hospital, Changsha 410008, China
| | - K Q Zhang
- Department of Gynecologic Oncology, Hunan Cancer Hospital, Changsha 410008, China
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Wu P, Sun HP, Wan LJ, Zhou CY, Wang T, Liu HX, Wang H. [Cell morphological analysis of hepatosplenic T-cell lymphoma gamma-delta type]. Zhonghua Yi Xue Za Zhi 2020; 100:1805-1811. [PMID: 32536127 DOI: 10.3760/cma.j.cn112137-20200221-00382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the cell morphological features of hepatosplenic T-cell lymphoma (HSTCL) gamma-delta (γδ) type, differentiate from acute leukaemia (AL). Methods: This was a retrospective study. The clinical data of four cases of HSTCL γδ type who were treated in Hebei Yanda Ludaopei Hospital from 2009 to 2014 were collected. Their initial morphology diagnoses in other hospitals were all acute leukemia or myelodysplastic syndrome (MDS). Morphological analysis and cytochemical stains to their bone marrow (BM) aspiration and peripheral blood (PB) smears were completed when they had no response to previous chemotherapies, and the morphological reports were compared with results of immunophenotyping, chromosome, and T cell receptor (TCR) gene rearrangement. Results: The percentages of malignant cells in four patients' BM aspirations were 7.6%-40.0%, and in two patients' PB was 9% and 10%, respectively. The morphology of four cases had a very high similarity in Wright's stain. Predominantly medium-sized cells were seen, with rich cytoplasm and frequently one big conspicuous nucleolus. The malignant cells resembled blasts, especially monoblasts, but with coarse granular chromatin, more compact than that in monoblasts. When comparing to malignant myeloblast and lymphoblasts, HSTCL cells were larger and more irregular in cell shape, with more abundant cytoplasm and prominent nuclear irregularity. The cytochemistric stain played an important role in differential diagnosis. HSTCL malignant cells showed non-specific esterase (NSE) negative or focal punctate activity which couldn't be inhibited by sodium fluoride. Periodic acid-Schiff (PAS) stain was negative or positive with a form of coarse granules. The myeloperioxdase (MPO) stain was negative. Conclusion: Malignant cells of HSTCL γδ type have very distinct morphological features of mature lymphocytic neoplasm. The quality of Wright's stain, being short of complete cytochemical stains, lacking of awareness of this disease, and acute leukemia or MDS like appearance in some cases, result in the possibility of diagnostic error as malignant blast, and probably are main causes of misdiagnosis of HSTCL γδ type.
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Affiliation(s)
- P Wu
- Clinical Laboratory, Hebei Yanda Ludaopei Hospital, Sanhe 065201, China
| | - H P Sun
- Clinical Laboratory, Hebei Yanda Ludaopei Hospital, Sanhe 065201, China
| | - L J Wan
- Clinical Laboratory, Hebei Yanda Ludaopei Hospital, Sanhe 065201, China
| | - C Y Zhou
- Clinical Laboratory, Hebei Yanda Ludaopei Hospital, Sanhe 065201, China
| | - T Wang
- Clinical Laboratory, Hebei Yanda Ludaopei Hospital, Sanhe 065201, China
| | - H X Liu
- Clinical Laboratory, Hebei Yanda Ludaopei Hospital, Sanhe 065201, China
| | - H Wang
- Clinical Laboratory, Hebei Yanda Ludaopei Hospital, Sanhe 065201, China
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Wu P, Li W, Zeng H, Lian F. AB1311-HPR RHEUMATIC AND MUSCULOSKELETAL DISEASES MANAGEMENT TOOL HELPS TO IMPROVE TREAT-TO-TARGET THERAPY AND PATIENTS’ ADHERENCE TO TREATMENT. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Many of the rheumatic and musculoskeletal diseases (RMD) are long term, painful, and function affecting, which takes both the doctors and patients a lot of time and effort. The number of Rheumatologists are not sufficient for the huge population of RMD patients in China. The doctor patient ratio is as low as 1:1000. Relatively inadequate medical resources, traffic inconvenience in rural area, and patients’ insufficient understandings of the RMD may cause delayed medical intervention and poor prognosis. Effective RMD patient management tools which provide disease monitoring and enough doctor-patient communication is essential to improve the patients’ adherence to treatment. We designed an RMD management app according to the social, cultural and economic situation of Chinese patients, which helps to facilitate shared decision making and relieve the pressure of insufficient medical resources.Objectives:We aim to investigate the effect of RMD patient management app on treat-to-target therapy and patients’ adherence and satisfaction to treatment.Methods:An observational survey was administrated using a RMD patient management app. The app was designed and improved by Rheumatologist, orthopedics, nurses, patients, and app technical experts. Patients were offered with a questionnaire in regard to satisfaction with the app and their attitudes about the disease. General therapeutic principles, rehabilitation exercise videos and follow-up information were distributed through the app. Warning signals were sent whenever there was a flag sign of exacerbation. The demographic and clinical data, social and economic status, and drug retention rates of the patients were documented. The survey was designed by clinical experts from relevant departments and developed by both doctors and patients.Results:All patients were supervised by the rheumatologist and orthopedist when using the app. In all the patients included, there were cases of rheumatoid arthritis (35.3%), osteoarthritis (32.4%), ankylosing spondylitis (26.5%), and other chronic arthritis (5.8%). The mean age 38.5±15.8 years old, with 52.9% male and 47.1% female. Most of the patients (85.3%) believed that the app was helpful. Young patients were more likely to respond to the survey than older patients. Some patients (79.4%) had increased compliance because the app offered more chances to communicate with the doctors, which increase their understanding and confidence about the disease. Three patients received flag signs of exacerbation much earlier than they could get to the hospital. From the feedback of the patients, we realized that the patient would like to have more information to keep them from stepping on the trap of false advertisement for therapy (which is very commonly seen in China).Conclusion:RMD patient need to manage disease activity, daily function and mental state. Insufficient medical resources and patients’ knowledge about the disease may lead to poor adherence and prognosis. RMD patient management tool on app was a feasible and cost-effective approach for data collection and patient education. The app increased treat-to-target therapy and patients’ adherence to treatment.References:None.Disclosure of Interests:None declared
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Wu P, Cowling BJ, Peiris JSM. Severity profiles of respiratory viruses in children in Hong Kong: abridged secondary publication. Hong Kong Med J 2020; 26 Suppl 4:17-21. [PMID: 32690813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023] Open
Affiliation(s)
- P Wu
- School of Public Health, The University of Hong Kong, Hong Kong
| | - B J Cowling
- School of Public Health, The University of Hong Kong, Hong Kong
| | - J S M Peiris
- School of Public Health, The University of Hong Kong, Hong Kong
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Wu P, Sisniega A, Stayman JW, Zbijewski W, Foos D, Wang X, Khanna N, Aygun N, Stevens RD, Siewerdsen JH. Cone-beam CT for imaging of the head/brain: Development and assessment of scanner prototype and reconstruction algorithms. Med Phys 2020; 47:2392-2407. [PMID: 32145076 PMCID: PMC7343627 DOI: 10.1002/mp.14124] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 02/06/2020] [Accepted: 02/21/2020] [Indexed: 01/14/2023] Open
Abstract
PURPOSE Our aim was to develop a high-quality, mobile cone-beam computed tomography (CBCT) scanner for point-of-care detection and monitoring of low-contrast, soft-tissue abnormalities in the head/brain, such as acute intracranial hemorrhage (ICH). This work presents an integrated framework of hardware and algorithmic advances for improving soft-tissue contrast resolution and evaluation of its technical performance with human subjects. METHODS Four configurations of a CBCT scanner prototype were designed and implemented to investigate key aspects of hardware (including system geometry, antiscatter grid, bowtie filter) and technique protocols. An integrated software pipeline (c.f., a serial cascade of algorithms) was developed for artifact correction (image lag, glare, beam hardening and x-ray scatter), motion compensation, and three-dimensional image (3D) reconstruction [penalized weighted least squares (PWLS), with a hardware-specific statistical noise model]. The PWLS method was extended in this work to accommodate multiple, independently moving regions with different resolution (to address both motion compensation and image truncation). Imaging performance was evaluated quantitatively and qualitatively with 41 human subjects in the neurosciences critical care unit (NCCU) at our institution. RESULTS The progression of four scanner configurations exhibited systematic improvement in the quality of raw data by variations in system geometry (source-detector distance), antiscatter grid, and bowtie filter. Quantitative assessment of CBCT images in 41 subjects demonstrated: ~70% reduction in image nonuniformity with artifact correction methods (lag, glare, beam hardening, and scatter); ~40% reduction in motion-induced streak artifacts via the multi-motion compensation method; and ~15% improvement in soft-tissue contrast-to-noise ratio (CNR) for PWLS compared to filtered backprojection (FBP) at matched resolution. Each of these components was important to improve contrast resolution for point-of-care cranial imaging. CONCLUSIONS This work presents the first application of a high-quality, point-of-care CBCT system for imaging of the head/ brain in a neurological critical care setting. Hardware configuration iterations and an integrated software pipeline for artifacts correction and PWLS reconstruction mitigated artifacts and noise to achieve image quality that could be valuable for point-of-care detection and monitoring of a variety of intracranial abnormalities, including ICH and hydrocephalus.
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Affiliation(s)
- P Wu
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - A Sisniega
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - J W Stayman
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - W Zbijewski
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - D Foos
- Carestream Health, Rochester, NY, 14608, USA
| | - X Wang
- Carestream Health, Rochester, NY, 14608, USA
| | - N Khanna
- Department of Radiology, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - N Aygun
- Department of Radiology, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - R D Stevens
- Department of Radiology, Johns Hopkins University, Baltimore, MD, 21205, USA
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, 21205, USA
- Department of Neurology, Johns Hopkins University, Baltimore, MD, 21205, USA
- Department of Neurosurgery, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - J H Siewerdsen
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, 21205, USA
- Department of Radiology, Johns Hopkins University, Baltimore, MD, 21205, USA
- Department of Neurosurgery, Johns Hopkins University, Baltimore, MD, 21205, USA
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Song DJ, Peng W, Li Z, Zhou X, Zhang YX, Peng XW, Zhou B, Lyu CL, Wu P, Tang YY. [Anatomical classification and application of chimeric myocutaneous medial thigh perforator flap in head and neck reconstruction]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:483-489. [PMID: 32842363 DOI: 10.3760/cma.j.cn115330-20190711-00436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the anatomical classification and application of chimeric myocutaneous medial thigh perforator (MTP) flap in head and neck reconstruction. Methods: From September 2015 to December 2018, the clinical data of 74 patients (62 males and 12 females, age ranging from 31 to 69 years, with a mean age of 50.2 years) with oral tumor, who underwent radical resection in Hunan Cancer Hospital, including 39 cases of tongue carcinoma, 24 cases of gingival carcinoma and 11 cases of buccal cancer, 26 cases of stage T4N1M0, 22 cases of stage T4N0M0,15 cases of stage T3N1M0, and 11 cases of stage T3N2M0 were retrospectively analyzed in this work.The arteries and the veins contributing to MTP were anastomosed respectively with superior thyroid arteries, while the venae comitans were anastomosed with superior thyroid venae veins or internal jugular venae vein. The size of soft tissue defect, the length, width and thickness of free medial thigh flap, the length and source of vascular pedicle were recorded. The flap survival, functional status and donor area recovery were observed. Results: The postoperative defects in size ranged from 4.0 cm×3.5 cm to 9.0 cm×5.5 cm, which were reconstructed by free chimeric myocutaneous MTP flaps. The mean length of MTP flaps was (12.5±0.4) cm, the mean width was (7.2±0.4) cm, the mean thickness was (3.5±0.2) cm. The mean pedicle length was (8.6±0.4) cm. The perforators existed consistently in all cases, and the vascular origins were classified into 6 types. There were 4 cases (5.4%) of the perforating branches originating from femoral artery between the medial femoris and the adductor longus, 6 cases (8.1%) of the perforating branches of the profunda femoral artery from the adductor longus, 16 cases (21.6%) of the perforating branches of the profunda femoral artery from the gracilis, 9 cases (12.2%) of the perforating branches of the profunda femoral artery between the gracilis and the adductor longus, 29 cases (39.2%) of the perforating branches of the profunda femoral artery from the adductor longus, and 10 cases (13.5%) of branches of the profunda femoral artery from the semimembranous muscle. All 74 flaps survived uneventfully. The donor sites and recipient sites were closed directly in all cases. All patients were followed up for 12-36 months with satisfied esthetic and functional results. Only linear scars were left in the donor sites, and the thigh function was not affected. Local recurrence happened in 4 cases, which were treated with radical resection and the left defects were reconstructed with pedicled pectoral major myocutaneous flaps. Conclusion: The chimeric myocutaneous MTP flap has good color match and texture, with abundant tissue, and consistent blood supply, and it can be harvested in various forms while leaving minimal morbidity at donor site, being an idea choice for reconstruction after surgery of oral cancer.
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Affiliation(s)
- D J Song
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - W Peng
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - Z Li
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - X Zhou
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - Y X Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China
| | - X W Peng
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - B Zhou
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - C L Lyu
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - P Wu
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
| | - Y Y Tang
- Department of Oncology Plastic Surgery, Hunan Cancer Hospital, Changsha 410008, China
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Nguy S, Oh C, Wu P, Li Z, Persky M, Hu K, Givi B, Tam M. Radiotherapy in Metastatic Oropharyngeal Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2019.11.136] [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: 10/24/2022]
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Shang Q, Wu P, Huang HL, Zhang SL, Tang XD, Guo XJ. Inhibition of heat shock protein 90 suppresses Bombyx mori nucleopolyhedrovirus replication in B. mori. Insect Mol Biol 2020; 29:205-213. [PMID: 31621968 DOI: 10.1111/imb.12625] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/02/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
Heat shock protein 90 (Hsp90) plays a very important role in facilitating the replication of many viruses. Until now, little has been known about the role of Hsp90 in Bombyx mori virus infection. In this study, we explored the role of BmHsp90 in B. mori nucleopolyhedrovirus (BmNPV) replication. We found that BmHsp90 inhibition by geldanamycin (GA) significantly reduced the BmNPV titre, the protein expression level of BmNPV nucleocapsid protein 39 (VP39) and the transcript level of BmNPV genes. Silencing the hsp90 gene in BmN cells by small interfering RNA suppressed BmNPV replication whereas overexpression of hsp90 promoted the replication of BmNPV. After inhibition of Hsp90, the expression of three key genes [signal transducing activator of transcription (stat), suppressor of cytokine signalling protein 2 (socs2), socs6] involved in the Janus kinase/STAT pathway significantly changed, with up-regulation of stat and down-regulation of socs2 and socs6. In addition, the expression of two antiapoptosis genes, BmNPV inhibitor of apoptosis protein1 (BmNPV-iap1) and Bmiap2, was greatly decreased in GA-treated cells, whereas their expression was significantly increased in hsp90-overexpressed silkworm larvae. Our results indicated that inhibition of Hsp90 can suppress BmNPV proliferation in B. mori. Our findings may provide new clues to elucidate the molecular mechanisms of silkworm-virus interactions.
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Affiliation(s)
- Q Shang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
| | - P Wu
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
- The Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
- Quality inspection center for sericultural products, Ministry of Agriculture and Rural Affairs, Zhenjiang, China
| | - H L Huang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
| | - S L Zhang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
| | - X D Tang
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
- The Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
| | - X J Guo
- Sericultural Research Institute, Jiangsu University of Science and Technology, Zhenjiang, China
- The Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, China
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No H, Tam M, Wu P. Treatment Related Risk Factors for Percutaneous Endoscopic Gastrostomy (PEG) Tube Placement in Locally Advanced Head and Neck Squamous Cell Carcinoma (LA-HNSCC). Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2019.11.084] [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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Wu P, Guo XS, Zhang X, Wu ZF, Wang RN, Li L, Liang M, Wang HL, Yan M, Qin ZX, Cheng PL, Jin CR, Yang MF, Wang YT, Li SJ. [Value of absolute quantification of myocardial perfusion by PET in detecting coronary microvascular disease in patients with non-obstructive coronaries]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:205-210. [PMID: 32234177 DOI: 10.3760/cma.j.cn112148-20191024-00652] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the incidence of coronary microvascular disease (CMVD) between patients with non-obstructive and obstructive coronary arteries. Methods: We retrospectively analyzed 97 patients with angina pectoris, who underwent the absolute quantitative PET examination of myocardial perfusion and coronary anatomy examination within 90 days. All patients were divided into two groups: non-obstructive group (72 cases, no stenosis ≥50% in all three coronary arteries) and obstructive group (25 cases, at least one coronary stenosis ≥50%; and at least one coronary stenosis<50%). Quantitative parameters derived from PET including rest myocardial blood flow (RMBF), stress myocardial blood flow (SMBF), coronary flow reserve (CFR) and cardiovascular risk factors were compared between the two groups. CMVD was defined as CFR<2.90 and SMBF<2.17 ml·min(-1)·g(-1). Results: Incidence of CMVD was significant higher in the non-obstructive coronary arteries of the obstructive group than in the non-obstructive coronary arteries of non-obstructive group (47.1% (16/34) vs. 25.5% (55/216), χ(2)=6.738, P=0.009) while incidence of CMVD was similar between non-obstructive and obstructive patients ((44% (11/25) vs. 33.3% (24/72), χ(2)=0.915, P=0.339). RMBF ((0.83±0.14) ml·min(-1)·g(-1) vs. (0.82±0.17) ml·min(-1)·g(-1)), SMBF ((2.13±0.60) ml·min(-1)·g(-1) vs. (1.91±0.50) ml·min(-1)·g(-1)) and CFR (2.59±0.66 vs. 2.36±0.47) were similar between the two groups (all P>0.05). Conclusions: CMVD can occur in non-obstructive coronary arteries in both patients with non-occlusive coronary arteries and patients with obstructive coronary arteries. Prevalence of CMVD is significantly higher in patients with obstructive coronary arteries than in patients with non-obstructive coronary arteries. The CMVD severity is similar between the two groups.
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Affiliation(s)
- P Wu
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - X S Guo
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - X Zhang
- Province-Ministry Co-construction Collaborative Innovation Center for Molecular Imaging of Precision Medicine, Taiyuan 030001, China
| | - Z F Wu
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - R N Wang
- Province-Ministry Co-construction Collaborative Innovation Center for Molecular Imaging of Precision Medicine, Taiyuan 030001, China
| | - L Li
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - M Liang
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - H L Wang
- Province-Ministry Co-construction Collaborative Innovation Center for Molecular Imaging of Precision Medicine, Taiyuan 030001, China
| | - M Yan
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - Z X Qin
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - P L Cheng
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
| | - C R Jin
- Department of cardiology, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - M F Yang
- Department of Nuclear Medicine, Beijing Chaoyang hospital, Capital Medical University, Beijing 100043, China
| | - Y T Wang
- Department of Nuclear Medicine, Third Affiliated Hospital of Soochow University (First People's Hospital of Changzhou), Changzhou 213003, China
| | - S J Li
- Department of Nuclear Medicine, First Hospital of Shanxi Medical University, Shanxi Key Laboratory of Molecular Imaging, Taiyuan 030001, China
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Yu J, Chen W, Wu P, Li Y. Quality of reporting of systematic reviews and meta-analyses of surgical randomized clinical trials. BJS Open 2020; 4:535-542. [PMID: 32109006 PMCID: PMC7260405 DOI: 10.1002/bjs5.50266] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 04/03/2019] [Accepted: 01/14/2020] [Indexed: 02/05/2023] Open
Abstract
Background Well designed and conducted systematic reviews are essential to clinical practice. Surgical intervention is more complex than medical intervention when considering special items related to procedures. There has been no cross‐sectional study of the reporting quality of systematic reviews of surgical randomized trials focused on special items relating to surgical interventions. Methods A cross‐sectional survey of systematic reviews of surgical randomized trials published in 2007 and 2017 was undertaken via a PubMed search. Quality of reporting was assessed by the PRISMA checklist, with intervention details containing 27 items. Univariable and multivariable linear regression was used to explore factors in the checklist as indicators of reporting quality. Results A total of 204 systematic reviews were identified. The median score for the PRISMA checklist was 22 (i.q.r. 20–24), and systematic reviews published in 2017 had a significantly higher median score than those from 2007 (22 (i.q.r. 21–24) versus 20 (17–22); P < 0·001). Among the 27 items, 15 were reported adequately and three were reported poorly (in less than 50 per cent of reports). The proportion of other items reported ranged from 54·4 to 77·9 per cent. In multivariable analysis, systematic reviews published in 2017 (coefficient 0·59, 95 per cent c.i. 0·50 to 0·69) and Cochrane reviews (coefficient 0·67, 0·55 to 0·81) were associated with better reporting. Conclusion The quality of reporting of systematic reviews of surgical randomized trials has improved in the past 10 years. Some information relating to specific surgical interventions is, however, still reported poorly.
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Affiliation(s)
- J Yu
- Chinese Evidence-based Medicine Centre, West China Hospital, Sichuan University, Chengdu, China
| | - W Chen
- Chinese Evidence-based Medicine Centre, West China Hospital, Sichuan University, Chengdu, China
| | - P Wu
- Editorial Office, West China Medical Press, Sichuan University, Chengdu, China
| | - Y Li
- Chinese Evidence-based Medicine Centre, West China Hospital, Sichuan University, Chengdu, China
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Vijayan RC, Han R, Wu P, Sheth NM, Ketcha MD, Vagdargi P, Vogt S, Kleinszig G, Osgood GM, Siewerdsen JH, Uneri A. Image-Guided Robotic K-Wire Placement for Orthopaedic Trauma Surgery. Proc SPIE Int Soc Opt Eng 2020; 11315:113151A. [PMID: 36082206 PMCID: PMC9450105 DOI: 10.1117/12.2549713] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
PURPOSE We report the initial development of an image-based solution for robotic assistance of pelvic fracture fixation. The approach uses intraoperative radiographs, preoperative CT, and an end effector of known design to align the robot with target trajectories in CT. The method extends previous work to solve the robot-to-patient registration from a single radiographic view (without C-arm rotation) and addresses the workflow challenges associated with integrating robotic assistance in orthopaedic trauma surgery in a form that could be broadly applicable to isocentric or non-isocentric C-arms. METHODS The proposed method uses 3D-2D known-component registration to localize a robot end effector with respect to the patient by: (1) exploiting the extended size and complex features of pelvic anatomy to register the patient; and (2) capturing multiple end effector poses using precise robotic manipulation. These transformations, along with an offline hand-eye calibration of the end effector, are used to calculate target robot poses that align the end effector with planned trajectories in the patient CT. Geometric accuracy of the registrations was independently evaluated for the patient and the robot in phantom studies. RESULTS The resulting translational difference between the ground truth and patient registrations of a pelvis phantom using a single (AP) view was 1.3 mm, compared to 0.4 mm using dual (AP+Lat) views. Registration of the robot in air (i.e., no background anatomy) with five unique end effector poses achieved mean translational difference ~1.4 mm for K-wire placement in the pelvis, comparable to tracker-based margins of error (commonly ~2 mm). CONCLUSIONS The proposed approach is feasible based on the accuracy of the patient and robot registrations and is a preliminary step in developing an image-guided robotic guidance system that more naturally fits the workflow of fluoroscopically guided orthopaedic trauma surgery. Future work will involve end-to-end development of the proposed guidance system and assessment of the system with delivery of K-wires in cadaver studies.
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Affiliation(s)
- R. C. Vijayan
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore MD
| | - R. Han
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore MD
| | - P. Wu
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore MD
| | - N. M. Sheth
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore MD
| | - M. D. Ketcha
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore MD
| | - P. Vagdargi
- Department of Computer Science, Johns Hopkins University, Baltimore MD
| | - S. Vogt
- Siemens Healthineers, Forchheim, Germany
| | | | - G. M. Osgood
- Department of Orthopaedic Surgery, Johns Hopkins Medicine, Baltimore MD
| | - J. H. Siewerdsen
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore MD
- Department of Computer Science, Johns Hopkins University, Baltimore MD
| | - A. Uneri
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore MD
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Pan WJ, Sun J, Zhou J, Sun DX, Wu P, Han Q. [Excision of thyroglossal cyst in children by transverse submentum incision]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 33:1065-1067. [PMID: 31914296 DOI: 10.13201/j.issn.1001-1781.2019.11.014] [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: 03/04/2019] [Indexed: 11/12/2022]
Abstract
Objective:To explore the application of transverse submentum incision in thyroglossal duct cyst surgery. Method:Submentum transverse incision for thyroglossal duct cyst removal in 14 children with thyroglossal duct cyst from January 2014 to December 2017. All cases were performed submentum dermatoglyphic incision, skin incision, subcutaneous tissue, platysma muscle incision, down lifting flap, along the white line incision and separation of banded muscle on both sides, see the mass along the wall of the capsule separated to the attachment of the hyoid bone, ablation of the mucosa of the capsule wall of the hyoid bone attachment, electrotome to break the hyoid bone. The cavity is indeed stopped after bleeding, and the skin is sutured continuously for continuous intradermal suture. The operation time, bleeding volume, severe complications, wound healing time and severe surgical scars were recorded. Close follow-up was performed to observe whether there was infection or recurrence of incisional wound. Parents were informed by telephone to go back to the outpatient clinic. RUTTER Children's Behavior Questionnaire was used to assess the children's psychological status. Vancouver Scar Rating Scale was used to evaluate the children's surgical scars, and to investigate whether parents satisfactory surgical methods. Result:Fourteen cases of thyroglossal duct cyst underwent transverse incision thyroglossal duct cyst excision successfully. The average operative time was 55 minutes, and the standard deviation was 10.5 min, bleeding was less than 10 ml, postoperative hoarseness and weakness of voice, silence became low, wound healing time averaged one week, no serious surgical scars, no wound infection and recurrence. Among the normal children of the same age group, 14 parents were satisfied with the operation. Conclusion:Excision of thyroglossal duct cyst under transverse incision is safe, reliable and satisfactory in appearance.
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Affiliation(s)
- W J Pan
- Department of General Surgery,Children's Hospital of Nanjing Medical University,Nanjing,210029,China
| | - J Sun
- Department of General Surgery,Children's Hospital of Nanjing Medical University,Nanjing,210029,China
| | - J Zhou
- Department of General Surgery,Children's Hospital of Nanjing Medical University,Nanjing,210029,China
| | - D X Sun
- Department of General Surgery,Children's Hospital of Nanjing Medical University,Nanjing,210029,China
| | - P Wu
- Department of General Surgery,Children's Hospital of Nanjing Medical University,Nanjing,210029,China
| | - Q Han
- Department of General Surgery,Children's Hospital of Nanjing Medical University,Nanjing,210029,China
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Qin J, Zhu HD, Guo JH, Ni CF, Wu P, Xu H, Mao AW, Lu J, Su C, Teng GJ. Factors associated with overall survival and relief of dysphagia in advanced esophageal cancer patients after 125I seed-loaded stent placement: a multicenter retrospective analysis. Dis Esophagus 2019; 32:5393322. [PMID: 30888392 DOI: 10.1093/dote/doz012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 11/26/2018] [Accepted: 02/13/2019] [Indexed: 12/11/2022]
Abstract
Iodine-125 (125I) seed-loaded stent placement has served as an effective palliation for malignant esophageal strictures in China. We performed a retrospective study to identify the prognostic factors of this irradiation stent placement in advanced esophageal cancer patients. A total of 201 patients who underwent 125I seed-loaded stent placement were included in this study from June 2012 to March 2016 at five hospitals in China. The Cox regression models adjusted for stratification factors were used, and a stepwise multivariate analysis was performed to predict the overall survival and relief of dysphagia on the basis of pretreatment clinical characteristics, respectively. Three independent prognostic factors were identified for overall survival: histopathological subtype (squamous cell carcinoma vs. adenocarcinoma, hazard ratio [HR] 1.45, 95% confidence interval [CI95%]: 1.01-2.09, P = 0.046), serum total protein (≥66 g/L vs. <66 g/L, HR 0.61, CI95%: 0.48-0.59, P = 0.023), and performance status (<2 vs. ≥2, HR 1.57, CI95%: 1.09-2.08, P = 0.013). Four factors were significantly associated with the relief of dysphagia: T stage (T3 vs. T4, P = 0.003), tumor location (superior vs. inferior, P = 0.049), tumor-node-metastasis classification (IV vs. II, P = 0.025), and age (≥71 years vs. <71 years, P = 0.029). Prognostic factors identified from this analysis can be used to aid clinical decision-making and design future clinical trials.
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Affiliation(s)
- J Qin
- Center of Interventional Radiology and Vascular Surgery, Department of Radiology
| | - H-D Zhu
- Center of Interventional Radiology and Vascular Surgery, Department of Radiology
| | - J-H Guo
- Center of Interventional Radiology and Vascular Surgery, Department of Radiology
| | - C-F Ni
- Department of Interventional Radiology, First Affiliated Hospital of Soochow University, Suzhou
| | - P Wu
- Department of Digestion, Xuzhou Central Hospital, The Affiliated Xuzhou Hospital of Southeast University
| | - H Xu
- Department of Interventional Radiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou
| | - A-W Mao
- Interventional Center, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Lu
- Center of Interventional Radiology and Vascular Surgery, Department of Radiology
| | - C Su
- Clinical Research Institute, Zhongda Hospital, Medical School, Southeast University, Nanjing
| | - G-J Teng
- Center of Interventional Radiology and Vascular Surgery, Department of Radiology
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77
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Liu MY, Liu YL, Wu P, Chen Q, Zhou SL. Determination of Place of Residence Using the Gene Information of Plants Carried by the Human Body. Fa Yi Xue Za Zhi 2019; 35:710-715. [PMID: 31970959 DOI: 10.12116/j.issn.1004-5619.2019.06.012] [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: 01/07/2019] [Indexed: 11/30/2022]
Abstract
Abstract Objective To identify the plant species using the DNA sequence of plant pollen from lung tissues of a unidentified body, infer the possible long-term places of residence of the deceased according to the distribution area of the pollen in the lung tissues, therefore narrow the scope of criminal investigation and provide clues for case solving. Methods Lung tissues were extracted from the deceased, total DNA was extracted by the mCTAB method. Gene fragments of the two plant DNA barcodes, matK and rbcL, were acquired using specific primers for amplification, then sequenced. The DNA sequences of target gene fragments were acquired through bioinformatics analysis. The sequences were combined with reference sequence data. Phylogenetic analysis was made to identify the species that the DNA sequences belonged to. The places where the deceased could have lived for a long time were inferred, according to the distribution information of plant species. Results Gene fragments of 32 plant species which belonged to 31 genera of 27 families were in the lung tissues of the deceased. Among them, plants of 9 genera that had certain indicative function were mainly endemic plants from Hainan, Guangdong, Guangxi and Yunnan. These results showed that the deceased may have stayed in these areas for a long time before death. After further investigation, the victim was confirmed to have come from a county in southern Guangxi, which was in accordance with the research results. Conclusion The method of using gene information of plants from lung tissues of human bodies to infer places of residence can assist inference of the places where the deceased could have lived for a long time. The present study may also provide new ideas for locating sources of the corpses in cases with unidentified victims.
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Affiliation(s)
- M Y Liu
- Forensic Judicial Appraisal Center of Beijing Public Security Bureau, Beijing 100192, China
| | - Y L Liu
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - P Wu
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Q Chen
- Forensic Judicial Appraisal Center of Beijing Public Security Bureau, Beijing 100192, China
| | - S L Zhou
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
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Zhu H, Chen D, Li N, Xu Q, Li H, He J, Wang H, Wu P, Lu J. Corrigendum: Fabrication of Photocontrolled Surfaces for Oil/Water Separation through Sulfur(VI) Fluoride Exchange. Chemistry 2019; 25:15957. [DOI: 10.1002/chem.201904920] [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: 11/09/2022]
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79
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Fang C, Yang J, Ding W, Li K, Weng D, Wu P, Chen G, Ma D, Wei J. Incidence of symptomatic deep vein thrombosis after gynecological surgery: a retrospective study in Chinese population. EUR J GYNAECOL ONCOL 2019. [DOI: 10.12892/ejgo4675.2019] [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: 11/13/2022]
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80
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Yu LL, Zhu M, Huang Y, Zhao YM, Wen JJ, Yang XJ, Wu P. Metformin relieves acute respiratory distress syndrome by reducing miR-138 expression. Eur Rev Med Pharmacol Sci 2019; 22:5355-5363. [PMID: 30178862 DOI: 10.26355/eurrev_201808_15737] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate whether metformin can relieve acute respiratory distress syndrome (ARDS). Its potential mechanism was also explored. MATERIALS AND METHODS The ARDS model was established by injecting LPS into mice that received metformin in advance and the mice in the control group. Pulmonary edema was detected by W/D ratios (wet-to-dry weight ratios), and the vascular exudation was reflected by the protein content and cell number of alveolar lavage fluid. Meanwhile, MPO (myeloperoxidase) activity assay was performed to analyze the neutrophil aggregation. The expression of inflammatory cytokines, including TNF-α, IL-1β, IL-6, and IL-17, were detected by enzyme-linked immunosorbent assay (ELISA). This series of experiments reflected the alleviation effect of metformin on ARDS. To further study the mechanism, we cultured alveolar macrophages (NR8383) in vitro and treated them with LPS and metformin. Western blot was used to detect the phosphorylation levels of p38, ERK, NF-kB, and SIRT1 expression level. Bioinformatics method was then used to predict the binding of miR-138 to SIRT1. The mRNA and protein expression of SIRT1 was detected in NR8383 cells transfected with miR-138 inhibitor. The dual luciferase gene reporter assay was used to detect the relative luciferase activities of miR-138 and SIRT1. RESULTS Pulmonary edema, vascular exudation, and neutrophil accumulation were observed in the ARDS model mice, and the levels of inflammatory cytokines including TNF-α, IL-1b, IL-6, and IL-17 were significantly increased. After metformin treatment, these pulmonic damage indicators were found to be partially reversed. At the same time, metformin could significantly reduce LPS-induced death. After NR8383 was treated with metformin and LPS, the expression of SIRT1 was higher than that of LPS treatment alone, but the expression of p-p38, p-ERK, and p-NF-κB was significantly decreased. After the addition of metformin in NR8383 after LPS treatment, the expression level of miR-138-5p was significantly decreased, and miR-138-5p was confirmed to target SIRT1 and regulate its expression. CONCLUSIONS Metformin could reduce LPS-induced pulmonic injury and increase expression of inflammatory factors. A possible mechanism might be that metformin-induced low expression of mir-138-5p could target SIRT1 to increase its expression and suppress the MAPK pathway, thus alleviating ARDS.
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Affiliation(s)
- L-L Yu
- Department of Pediatrics, Jingjiang People's Hospital, Jingjiang, China.
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Qin W, Chao HY, Cai XH, Lu XZ, Liu J, Wu P, Chen MY. [Coexisting mutations in NPM1-mutated elderly adults with acute myeloid leukemia]. Zhonghua Yi Xue Za Zhi 2019; 99:3152-3157. [PMID: 31694106 DOI: 10.3760/cma.j.issn.0376-2491.2019.40.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the coexisting mutations in NPM1 mutated elderly patients with acute myeloid leukemia(AML). Methods: The clinical data of 152 elderly adults(aged≥60 years) and 49 young adults(aged 18-45 years) with AML between June 2013 and December 2018 in outpatient and hospitalized patients of Changzhou Second People's Hospital and Wuxi Second People's Hospital were retrospectively analyzed. A total of 51 gene mutations were detected using targeted next-generation sequencing (NGS) and sanger sequencing. The general clinical characteristics, the occurrence of coexistence gene mutations, the correlation between coexistence gene mutations and some clinical parameters, and the initial induction remission rate between elderly and young adult AML patients with NPM1 mutations were analyzed and compared. Results: NPM1 mutations were detected in 46 of 152 elderly AML patients. Thirty eight patients (82.6%) with NPM1 mutations carried other gene mutations at the same time, among whom 8 patients (17.4%) carried NPM1 mutations alone, while 14(30.4%) carried 2, 16 (34.8%) carried 3, and 8 (17.4%) carried ≥ 4 mutations. NPM1 mutations frequently co-occurred with FLT3-ITD15 cases (32.6%) , DNMT3A10 (21.7%) , TET26 (13.4%) and FLT3-TKD5 (10.9%) . Compared with young adults with NPM1 mutations, elderly patients had higher TP53, FLT3-TKD rates, lower incidence of DNMT3A, RAS mutation (all P<0.05) and lower coexistence rate of 4 gene mutations (P=0.002).The presence of ≥ 4 mutations was found to be significantly associated with higher white blood level than those in patients with single, double and 3 mutations coexisted in elderly adults AML patients(all P<0.05). With the increase of the amount of mutations, the complete remission(CR) rate decreased gradually after the initial induction. Patients who carried 3 or more mutations showed a lower CR rate than those with single gene mutations (all P<0.05) . Patients who carried>4 genes also showed a significantly lower CR rate than those with double gene mutations (P=0.031). Patients with FLT3-ITD mutations exhibited higher white blood level and lower CR rate than that in nonmutant type group (all P<0.05). The CR rate of patients with DNMT3A mutation was also significantly lower than that with nonmutant type (P=0.033). However, patients with FLT3-TKD mutations showed a higher platelet level than that with nonmutant type (P=0.019). There was no significant difference in CR rate and peripheral blood cell level between TET2 mutated and nonmutant type. Conclusion: NPM1 mutated elderly patients with AML commonly show additional mutations, and the amount and type of coexisting mutations have an influence on the clinical features and CR rate of elderly patients with AML.
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Affiliation(s)
- W Qin
- Department of Hematology, Affiliated Changzhou Second Hospital of Nanjing Medical University, Changzhou 213000, China
| | - H Y Chao
- Department of Hematology, Affiliated Changzhou Second Hospital of Nanjing Medical University, Changzhou 213000, China
| | - X H Cai
- Department of Hematology, Affiliated Changzhou Second Hospital of Nanjing Medical University, Changzhou 213000, China
| | - X Z Lu
- Department of Hematology, Affiliated Changzhou Second Hospital of Nanjing Medical University, Changzhou 213000, China
| | - J Liu
- Department of Hematology, Affiliated Changzhou Second Hospital of Nanjing Medical University, Changzhou 213000, China
| | - P Wu
- Department of Hematotogy, the Second Hospital of Wuxi, Wuxi 214000, China
| | - M Y Chen
- Department of Hematology, Affiliated Changzhou Second Hospital of Nanjing Medical University, Changzhou 213000, China
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Shaikh F, Wu P, Cooper B. Patterns of Care and Use of Radiation Therapy for Clival Chordoma. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2232] [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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83
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Li H, Peng XW, Li Z, Peng W, Zhou X, Song DJ, Zhou B, Lyu CL, Wu P, Ou Y, Mao HX, Liu ZY. [The clinical applied analysis of the modified transoral endoscopic thyroidectomy vestibular approach]. Zhonghua Wai Ke Za Zhi 2019; 57:686-690. [PMID: 31474061 DOI: 10.3760/cma.j.issn.0529-5815.2019.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the safety and feasibility of the modified transoral endoscopic thyroidectomy vestibular approach (TOETVA) by dissection of mental nerve in clinical practice. Methods: Totally 140 patients underwent the modified TOETVA from the Department of Head and Neck Surgery, Hunan Cancer Hospital from July 2016 to June 2018 were analyzed retrospectively. There were 130 females and 10 males, aging (35.4±9.8) years (range: 11 to 56 years). The operative time, intraoperative blood loss, postoperative hospital stay, postoperative suction drainage, postoperative pain score, postoperative cosmetic satisfaction and postoperative complications (recurrent laryngeal nerve palsy, hypoparathyroidism, infection, pneumoderm, seroma and mental nerve injury) were summarized. Results: Of the 140 patients, 1 patient was transferred to open surgery. Fifty-nine patients underwent thyroidectomy with an operation time of (100.8±18.9) minutes. Sixty-three patients underwent thyroidectomy and central lymphadenectomy with an operation time of (112.1±16.6) minutes. Eighteen cases underwent total thyroidectomy and central lymphadenectomy with an operation time of (185.3±25.9) minutes. The postoperative hospital stay was (3.76±0.98) days. The postoperative drainage was (96.8±36.2) ml. The 24-hour postoperative pain score was 2.66±1.23, the postoperative cosmetic satisfaction was 9.65±0.24. Among the postoperative complications, there were 3 cases of temporary recurrent laryngeal nerve palsy, 2 cases of permanent recurrent laryngeal nerve palsy, 4 cases of temporary hypoparathyroidism but no permanent hypoparathyroidism, 2 cases of infection, 1 case of seroma, 3 cases of pneumoderm, and no cases of mental nerve injury. Conclusion: The modified TOETVA by dissection of mental nerve is safe and feasible.
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Affiliation(s)
- H Li
- Department of Head and Neck Surgry, Hunan Province Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, China
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Wu P. 218 Incidence of herpes zoster and risk of cancer in early onset HZ patients: A nationwide, population-based cohort study. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.294] [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: 10/27/2022]
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85
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Luo T, Wang L, Wu P, Gong W, Chen W, Zhao H, Zheng Z. Downregulated vimentin and upregulated E-cadherin in T1 stage non-small-cell lung cancer: does it suggest a mesenchymal-epithelial transition? Neoplasma 2019; 64:693-699. [PMID: 28592120 DOI: 10.4149/neo_2017_506] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Lung cancer has been a major threat to human health worldwide. Vimentin (VIM) and E-cadherin (E-cad) are molecular markers that play important roles in epithelial-mesenchymal transition (EMT), which has been shown to be correlated with tumor progression. Herein, we investigated the associations between clinicopathological parameters and VIM/E-cad expression in primary T1 stage non-small cell lung cancer (NSCLC). Real-time PCR was performed on RNA extracted from tumor tissue isolated from 54 patients with T1 stage NSCLC. Immunohistochemistry was used to measure the protein levels of VIM and E-cad. The paired-samples t-test, independent-samples t- test, Kappa test, and nonparametric test were used to perform statistical analyses. The expression of VIM were lower (P<0.001) and that of E-cad was higher (P<0.001) in tumor tissue when compared with the normal tissue at the transcriptional level. The RNA of VIM in adenocarcinomas was significantly higher than that found in squamous cell carcinomas (P<0.01). Moreover, the level of metastasis observed in the lymph node was significantly higher than that observed in metastasis outside of the lymph node (P<0.05). Vimentin protein had a lower profile in the tumor tissue, and the protein level of E-cad was higher in the tumor tissue. The IHC score of VIM in tumor tissue was found associated with both the pathological type and smoke index, and the score of E-cad was found to be related to visceral pleura involvement. In conclusions, VIM is downregulated and E-cad is upregulated in T1 stage NSCLC. Our study results suggest that a mesenchymal-epithelial transition may take place in the early-stage of tumor development, and that EMT occurs when the tumor develops into a certain stage.
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Li S, Wang K, Hou Z, Yang J, Ren W, Gao S, Meng F, Wu P, Liu B, Liu J, Yan J. OC-0495 Use of radiomics in the recurrence patterns after IMRT for head and neck cancer: a preliminary study. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30915-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Li S, Hou Z, Wang K, Yang J, Ren W, Gao S, Meng F, Wu P, Liu B, Liu J, Yan J. PO-121 Use of radiomics in the recurrence patterns after IMRT for Head and Neck cancer: a preliminary study. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30287-7] [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: 10/27/2022]
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Manning G, Hendry B, Taylor S, Jones W, Strader M, Bencomo T, Bailey L, Bedolla C, Roldan C, Moudiotis B, Vaidya C, Anning S, Bunce S, Estcourt E, Folland E, Gordon C, Harrill J, Ireland J, Piper L, Scaife K, Sutton S, Wilkins M, Costelloe J, Palmer L, Casas C, Miller M, Burgard C, Erickson J, Hallanger-Johnson P, Clark W, Taylor A, Lafferty S, Gillett C, Nolan M, Pathak L, Sondrol T, Hjelle S, Hafner J, Kotrba R, Hendrickson A, Cemeroglu T, Symington M, Daniel Y, Appiagyei-Dankah D, Postellon M, Racine L, Kleis K, Barnes S, Godwin H, McCullough K, Shaheen G, Buck L, Noel M, Warren S, Weber S, Parker I, Gillespie B, Nelson C, Frost J, Amrhein E, Moreland A, Hayes J, Peggram J, Aisenberg M, Riordan J, Zasa E, Cummings K, Scott T, Pinto A, Mokashi K, McAssey E, Helden P, Hammond L, Dinning S, Rahman S, Ray C, Dimicri S, Guppy H, Nielsen C, Vogel C, Ariza L, Morales Y, Chang R, Gabbay L, Ambrocio L, Manley R, Nemery W, Charlton P, Smith L, Kerr B, Steindel-Kopp M, Alamaguer D, Liljenquist G, Browning T, Coughenour M, Sulk E, Tsalikan M, Tansey J, Cabbage N. Identical and Nonidentical Twins: Risk and Factors Involved in Development of Islet Autoimmunity and Type 1 Diabetes. Diabetes Care 2019; 42:192-199. [PMID: 30061316 PMCID: PMC6341285 DOI: 10.2337/dc18-0288] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/28/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE There are variable reports of risk of concordance for progression to islet autoantibodies and type 1 diabetes in identical twins after one twin is diagnosed. We examined development of positive autoantibodies and type 1 diabetes and the effects of genetic factors and common environment on autoantibody positivity in identical twins, nonidentical twins, and full siblings. RESEARCH DESIGN AND METHODS Subjects from the TrialNet Pathway to Prevention Study (N = 48,026) were screened from 2004 to 2015 for islet autoantibodies (GAD antibody [GADA], insulinoma-associated antigen 2 [IA-2A], and autoantibodies against insulin [IAA]). Of these subjects, 17,226 (157 identical twins, 283 nonidentical twins, and 16,786 full siblings) were followed for autoantibody positivity or type 1 diabetes for a median of 2.1 years. RESULTS At screening, identical twins were more likely to have positive GADA, IA-2A, and IAA than nonidentical twins or full siblings (all P < 0.0001). Younger age, male sex, and genetic factors were significant factors for expression of IA-2A, IAA, one or more positive autoantibodies, and two or more positive autoantibodies (all P ≤ 0.03). Initially autoantibody-positive identical twins had a 69% risk of diabetes by 3 years compared with 1.5% for initially autoantibody-negative identical twins. In nonidentical twins, type 1 diabetes risk by 3 years was 72% for initially multiple autoantibody-positive, 13% for single autoantibody-positive, and 0% for initially autoantibody-negative nonidentical twins. Full siblings had a 3-year type 1 diabetes risk of 47% for multiple autoantibody-positive, 12% for single autoantibody-positive, and 0.5% for initially autoantibody-negative subjects. CONCLUSIONS Risk of type 1 diabetes at 3 years is high for initially multiple and single autoantibody-positive identical twins and multiple autoantibody-positive nonidentical twins. Genetic predisposition, age, and male sex are significant risk factors for development of positive autoantibodies in twins.
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Affiliation(s)
- Taylor M. Triolo
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Alexandra Fouts
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Laura Pyle
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Liping Yu
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Peter A. Gottlieb
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Andrea K. Steck
- Barbara Davis Center for Diabetes, University of Colorado School of Medicine, Aurora, CO
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Wang LL, Guo SX, Wu P, Shao HW, Han CM. [Influences of hydrogen-rich saline on acute kidney injury in severely burned rats and mechanism]. Zhonghua Shao Shang Za Zhi 2019; 34:629-636. [PMID: 30293367 DOI: 10.3760/cma.j.issn.1009-2587.2018.09.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the influences of hydrogen-rich saline on acute kidney injury in severely burned rats and to analyze the related mechanism. Methods: Fifty-six Sprague Dawley rats were divided into sham injury group (n=8), burn group (n=24), and hydrogen-rich saline group (n=24) according to the random number table. Rats in sham injury group were treated by 20 ℃ water bath on the back for 15 s to simulate injury, and rats in burn group and hydrogen-rich saline group were inflicted with 30% total body surface area (TBSA) full-thickness scald (hereinafter referred to as burns) by 100 ℃ water bath on the back for 15 s. Immediately after injury, hydrogen-rich saline at the dose of 10 mL/kg were intraperitoneally injected to the rats in hydrogen-rich saline group at one time, while normal saline with the same dose were intraperitoneally injected to the rats in sham injury group and burn group. At post injury hour (PIH) 6, rats in the 3 groups were intraperitoneally injected with 4 mL·kg(-1)·%TBSA(-1) lactated Ringer's solution for resuscitation. Eight rats from sham injury group at PIH 72 and eight rats from burn group and hydrogen-rich saline group at PIH 6, 24, and 72 were sacrificed respectively after their blood samples from abdominal aorta were collected. Then their kidney tissue was harvested for histopathological observation and renal tubular injury scoring by hematoxylin and eosin staining, serum creatinine and blood urea nitrogen were detected by the clinical blood biochemical analyzer, expression distribution and mRNA expressions of tumor necrosis factor α (TNF-α), interleukin-1β (IL-1β), and IL-6 in renal tissue were evaluated by immunohistochemical staining and real time fluorescent quantitive reverse transcription polymerase chain reaction respectively, and protein expression of high mobility group protein 1 (HMGB1) was detected by Western blotting. Data were processed with Kruskal-Wallis H test, Dunn test, one-way analysis of variance, Bonferroni test. Results: (1) The renal tubular structure of rats in sham injury group at PIH 72 was complete with no inflammatory cell infiltration and no cellular degeneration or necrosis. Since PIH 6, the changes such as vacuolation and shape change of cells and aggregation of broken protein in renal tubules were observed in rats of burn group, and all these changes deteriorated with time. The renal injury of rats in hydrogen-rich saline group at different post injury time points were relieved compared with those of rats in burn group at the corresponding time points. The renal tubular injury scores of rats in burn group and hydrogen-rich saline group at PIH 6, 24, and 72 were significantly higher than the score in sham injury group at PIH 72 (P<0.05). The renal tubular injury scores of rats in hydrogen-rich saline group were significantly lower than those in burn group at PIH 6, 24, and 72 (P<0.05). (2) Except for those in hydrogen-rich saline group at PIH 6 and 72 (P>0.05), the levels of serum creatinine of rats in burn group at all the time points and hydrogen-rich saline group at the other time points were significantly higher than the level of serum creatinine of rats in sham injury group at PIH 72 (P<0.01). The levels of blood urea nitrogen of rats in burn group and hydrogen-rich saline group at PIH 6, 24, and 72 were significantly higher than the level of blood urea nitrogen of rats in sham injury group at PIH 72 (P<0.01). The levels of serum creatinine and blood urea nitrogen of rats in hydrogen-rich saline group at PIH 6, 24, and 72 were significantly lower than those in burn group at the corresponding time points (P<0.05). (3) There were certain degree of positive expressions of TNF-α, IL-1β, and IL-6 in renal tissue of rats in sham injury group at PIH 72, which were mainly observed in the cytoplasm of renal tubular epithelium cell. The expressions of above-mentioned inflammatory cytokines in renal tissue of rats in burn group at PIH 6, 24, and 72 were higher than those in sham injury group. The expressions of above-mentioned inflammatory cytokines in renal tissue of rats in hydrogen-rich saline group at all the time points were less than those in burn group at the corresponding time points. (4) Compared with those in sham injury group at PIH 72, the mRNA expression levels of TNF-α, IL-1β, and IL-6 of rats in burn group at PIH 6, 24, and 72 were significantly increased (P<0.01). The mRNA expression levels of TNF-α were significantly increased in hydrogen-rich saline group at PIH 6 and 24 (P<0.05 or P<0.01), and the mRNA expression level of IL-6 was significantly increased in hydrogen-rich saline group at PIH 6 (P<0.01). Compared with those at the corresponding time points in burn group, except for the mRNA expression level of TNF-α in hydrogen-rich saline group at PIH 6 showed no significant differences (P>0.05), and the mRNA expression levels of TNF-α, IL-1β, and IL-6 at the other time points in hydrogen-rich saline group were significantly decreased (P<0.05). (5) Compared with 0.39±0.03 in sham injury group at PIH 72, the protein expression of HMGB1 of rats in burn group at PIH 6, 24, and 72 (1.19±0.07, 1.00±0.06, 0.80±0.05) were significantly increased (P<0.05), while the protein expression of HMGB1 of rats in hydrogen-rich saline group at PIH 6, 24, and 72 (0.35±0.08, 0.47±0.06, 0.42±0.06) showed no significant differences (P>0.05). Compared with those in burn group, the protein expressions of HMGB1 of rats in hydrogen-rich saline group at PIH 6, 24, and 72 were significantly decreased (P<0.05). Conclusions: Hydrogen-rich saline can alleviate the acute kidney injury in severely burned rats through regulating the release of inflammatory cytokines in renal tissue.
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Affiliation(s)
- L L Wang
- Department of Burns, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
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90
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Liu Y, Wu P, Bai CG, Zheng WW. [Application of the ImmunoRatio image analysis for Ki-67 positive index accurate validation determination in breast cancer]. Zhonghua Bing Li Xue Za Zhi 2019; 48:45-47. [PMID: 30641647 DOI: 10.3760/cma.j.issn.0529-5807.2019.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y Liu
- Cadet of the First Brigade, Basic Medical College, Navy Medical University (Second Military Medical University), Shanghai 200433, China
| | - P Wu
- Department of Pathology, Huaian Maternal and Child Health Care Hospital, Huaian 223002, China
| | - C G Bai
- Department of Pathology, Changhai Hospital, Navy Medical University (Second Military Medical University), Shanghai 200433, China
| | - W W Zheng
- Department of Pathology, Changhai Hospital, Navy Medical University (Second Military Medical University), Shanghai 200433, China
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Wu P, Gao Q, Hsu PL. On the representation of effective stress for computing hemolysis. Biomech Model Mechanobiol 2019; 18:665-679. [DOI: 10.1007/s10237-018-01108-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 12/15/2018] [Indexed: 11/29/2022]
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Wu P, Stayman JW, Sisniega A, Zbijewski W, Foos D, Wang X, Aygun N, Stevens R, Siewerdsen JH. Statistical weights for model-based reconstruction in cone-beam CT with electronic noise and dual-gain detector readout. ACTA ACUST UNITED AC 2018; 63:245018. [DOI: 10.1088/1361-6560/aaf0b4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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93
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Xie CB, Huang XQ, Wu P, Luo X, He J, Zeng JF, Wang W, Tang YY. [Expression and significance of serum insulin-like growth factor-1 in patients with obstructive sleep apnea hypopnea syndrome]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:481-484. [PMID: 29798073 DOI: 10.13201/j.issn.1001-1781.2018.07.001] [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] [Key Words] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the expression and significance of serum insulinlike growth factor-1(IGF-1) in adult patients with obstructive sleep apnea hypopnea syndrome(OSAHS).Method:One hundred and seven patients of OSAHS diagnosed with PSG were included in the observation group,which were divided into heavy, medium and light group according to AHI.Fifty case of healthy people without OSAHS were included in control group.Serum IGF-1 were measured by ELISA. Thirty patients of heavy OSAHS received surgery and CPAP treatment for three months,and were retested the levels of IGF-1 and PSG six months later.Result:①With the increase of OSAHS severity, the levels of serum IGF-1 were gradually decreased (F=37.732,P<0.01). There was no significant difference between mild group and healthy people (P>0.05), while there was significant differences between the remaining groups (P<0.01). ②Serum IGF-1 level has no correlation with BMI and age in OSAHS patients(P>0.05), and negatively correlated with LSaO₂,and positively correlated with AHI (P<0.01). ③Serum IGF-1 level[(46.56±3.74)μg/L] increased slightly compared with those before treatment[(42.79±4.87)μg/L] in 30 severe patients after treatment with 3 months CPAP and regimen (P<0.01). Serum IGF-1 level[(56.61±5.46)μg/L] increased significantly after treatment for six months; AHI level (18.72±7.36) was significantly lower than that before treatment (48.77±10.51), and LSaO₂[(87.42±8.61)%] increased significantly than that before treatment[(68.33±10.24)%].Conclusion:OSAHS patients with decreased serum IGF-1 level may be associated with concurrent insulin resistance. Surgery combined with more than half a year of CPAP treatment can significantly reduce AHI, improve the level of LSaO₂ and serum IGF-1. Serum IGF-1 levels could be used as a monitor of efficacy evaluation.
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Affiliation(s)
- C B Xie
- Department of Otolaryngology Head and Neck Surgery,Xiangya Hospital,Central South University, Key Laboratory of Otolaryngology Major Disease Research of Hunan,Changsha,410008,China
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Yan D, Wu P, Zhang SP, Yang JG, Li YN, Wei XC, Wang L, Huai XL. Comparative study on the photoluminescence properties of monoclinic and cubic erbium oxide. Spectrochim Acta A Mol Biomol Spectrosc 2018; 205:341-347. [PMID: 30032051 DOI: 10.1016/j.saa.2018.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 07/01/2018] [Accepted: 07/05/2018] [Indexed: 06/08/2023]
Abstract
As a heavy rare earth oxide, erbium oxide (Er2O3) has many attractive properties. Monoclinic Er2O3 has useful properties not found in stable cubic Er2O3, such as unique optical properties and high radiation damage tolerance. In this study, pure cubic and mixed phase of cubic and monoclinic Er2O3 coatings were prepared. Photoluminescence properties of these coatings were characterized by a confocal micro-Raman spectrometer equipped with 325, 473, 514, 532, 633 nm lasers, and the influence of microstructure on the fluorescence properties was analyzed in detail. The room temperature fluorescence peaks of cubic Er2O3 were assigned. Furthermore, a novel method for rapid phase identification of Er3+ doped cubic and monoclinic rare earth sesquioxides at room temperature was proposed.
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Affiliation(s)
- D Yan
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
| | - P Wu
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China.
| | - S-P Zhang
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
| | - J-G Yang
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
| | - Y-N Li
- Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
| | - X-C Wei
- Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
| | - L Wang
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - X-L Huai
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
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Lee A, Tam M, Wu P, Gerber N, Lederman A, Garay E, Sheth N, Safdieh J, Choi K, Schreiber D. Patterns of Care of Adjuvant Radiation Therapy after Lumpectomy and Survival in T1N0M0 Estrogen Receptor Positive Breast Cancer. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1622] [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: 11/25/2022]
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Holton S, Antell K, Medaglio D, Wu P, Wilson S. Comparing breastfeeding patterns among women who chose immediate postpartum LARC versus all other contraceptive options. Contraception 2018. [DOI: 10.1016/j.contraception.2018.07.070] [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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97
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Redondo MJ, Geyer S, Steck AK, Sharp S, Wentworth JM, Weedon MN, Antinozzi P, Sosenko J, Atkinson M, Pugliese A, Oram RA, Antinozzi P, Atkinson M, Battaglia M, Becker D, Bingley P, Bosi E, Buckner J, Colman P, Gottlieb P, Herold K, Insel R, Kay T, Knip M, Marks J, Moran A, Palmer J, Peakman M, Philipson L, Pugliese A, Raskin P, Rodriguez H, Roep B, Russell W, Schatz D, Wherrett D, Wilson D, Winter W, Ziegler A, Benoist C, Blum J, Chase P, Clare-Salzler M, Clynes R, Eisenbarth G, Fathman C, Grave G, Hering B, Kaufman F, Leschek E, Mahon J, Nanto-Salonen K, Nepom G, Orban T, Parkman R, Pescovitz M, Peyman J, Roncarolo M, Simell O, Sherwin R, Siegelman M, Steck A, Thomas J, Trucco M, Wagner J, Greenbaum ,CJ, Bourcier K, Insel R, Krischer JP, Leschek E, Rafkin L, Spain L, Cowie C, Foulkes M, Krause-Steinrauf H, Lachin JM, Malozowski S, Peyman J, Ridge J, Savage P, Skyler JS, Zafonte SJ, Kenyon NS, Santiago I, Sosenko JM, Bundy B, Abbondondolo M, Adams T, Amado D, Asif I, Boonstra M, Bundy B, Burroughs C, Cuthbertson D, Deemer M, Eberhard C, Fiske S, Ford J, Garmeson J, Guillette H, Browning G, Coughenour T, Sulk M, Tsalikan E, Tansey M, Cabbage J, Dixit N, Pasha S, King M, Adcock K, Geyer S, Atterberry H, Fox L, Englert K, Mauras N, Permuy J, Sikes K, Berhe T, Guendling B, McLennan L, Paganessi L, Hays B, Murphy C, Draznin M, Kamboj M, Sheppard S, Lewis V, Coates L, Moore W, Babar G, Bedard J, Brenson-Hughes D, Henderson C, Cernich J, Clements M, Duprau R, Goodman S, Hester L, Huerta-Saenz L, Karmazin A, Letjen T, Raman S, Morin D, Henry M, Bestermann W, Morawski E, White J, Brockmyer A, Bays R, Campbell S, Stapleton A, Stone N, Donoho A, Everett H, Heyman K, Hensley H, Johnson M, Marshall C, Skirvin N, Taylor P, Williams R, Ray L, Wolverton C, Nickels D, Dothard C, Hsiao B, Speiser P, Pellizzari M, Bokor L, Izuora K, Abdelnour S, Cummings P, Paynor S, Leahy M, Riedl M, Shockley S, Karges C, Saad R, Briones T, Casella S, Herz C, Walsh K, Greening J, Hay F, Hunt S, 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P, Dinning L, Rahman S, Ray S, Dimicri C, Guppy S, Nielsen H, Vogel C, Ariza C, Morales L, Chang Y, Gabbay R, Ambrocio L, Manley L, Nemery R, Charlton W, Smith P, Kerr L, Steindel-Kopp B, Alamaguer M, Tabisola-Nuesca E, Pendersen A, Larson N, Cooper-Olviver H, Chan D, Fitz-Patrick D, Carreira T, Park Y, Ruhaak R, Liljenquist D. A Type 1 Diabetes Genetic Risk Score Predicts Progression of Islet Autoimmunity and Development of Type 1 Diabetes in Individuals at Risk. Diabetes Care 2018; 41:1887-1894. [PMID: 30002199 PMCID: PMC6105323 DOI: 10.2337/dc18-0087] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 06/06/2018] [Indexed: 02/03/2023]
Abstract
OBJECTIVE We tested the ability of a type 1 diabetes (T1D) genetic risk score (GRS) to predict progression of islet autoimmunity and T1D in at-risk individuals. RESEARCH DESIGN AND METHODS We studied the 1,244 TrialNet Pathway to Prevention study participants (T1D patients' relatives without diabetes and with one or more positive autoantibodies) who were genotyped with Illumina ImmunoChip (median [range] age at initial autoantibody determination 11.1 years [1.2-51.8], 48% male, 80.5% non-Hispanic white, median follow-up 5.4 years). Of 291 participants with a single positive autoantibody at screening, 157 converted to multiple autoantibody positivity and 55 developed diabetes. Of 953 participants with multiple positive autoantibodies at screening, 419 developed diabetes. We calculated the T1D GRS from 30 T1D-associated single nucleotide polymorphisms. We used multivariable Cox regression models, time-dependent receiver operating characteristic curves, and area under the curve (AUC) measures to evaluate prognostic utility of T1D GRS, age, sex, Diabetes Prevention Trial-Type 1 (DPT-1) Risk Score, positive autoantibody number or type, HLA DR3/DR4-DQ8 status, and race/ethnicity. We used recursive partitioning analyses to identify cut points in continuous variables. RESULTS Higher T1D GRS significantly increased the rate of progression to T1D adjusting for DPT-1 Risk Score, age, number of positive autoantibodies, sex, and ethnicity (hazard ratio [HR] 1.29 for a 0.05 increase, 95% CI 1.06-1.6; P = 0.011). Progression to T1D was best predicted by a combined model with GRS, number of positive autoantibodies, DPT-1 Risk Score, and age (7-year time-integrated AUC = 0.79, 5-year AUC = 0.73). Higher GRS was significantly associated with increased progression rate from single to multiple positive autoantibodies after adjusting for age, autoantibody type, ethnicity, and sex (HR 2.27 for GRS >0.295, 95% CI 1.47-3.51; P = 0.0002). CONCLUSIONS The T1D GRS independently predicts progression to T1D and improves prediction along T1D stages in autoantibody-positive relatives.
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Affiliation(s)
- Maria J. Redondo
- Texas Children’s Hospital, Baylor College of Medicine, Houston, TX
| | | | - Andrea K. Steck
- Barbara Davis Center for Childhood Diabetes, University of Colorado School of Medicine, Aurora, CO
| | - Seth Sharp
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | - John M. Wentworth
- Walter and Eliza Hall Institute of Medical Research and Royal Melbourne Hospital, Parkville, Victoria, Australia
| | - Michael N. Weedon
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
| | | | | | | | | | - Richard A. Oram
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, U.K
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Bu LL, Liu FT, Jiang CF, Guo SS, Yu H, Zuo CT, Wu P, Wang J. Patterns of dopamine transporter imaging in subtypes of multiple system atrophy. Acta Neurol Scand 2018; 138:170-176. [PMID: 29573392 DOI: 10.1111/ane.12932] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2018] [Indexed: 12/25/2022]
Abstract
OBJECTIVES To investigate the differences in the pattern of striatal (caudate and putamen) dopamine transporter (DAT) loss in a multiple system atrophy (MSA) cohort, based on the clinical variants parkinsonian subtype (MSA-P) and cerebellar subtype (MSA-C) via (11)C-N-2-carbomethoxy-3-(4-fluorophenyl)-tropane (11 C-CFT) positron emission tomography (PET) imaging. MATERIALS AND METHODS One hundred and six subjects (forty-one patients with probable MSA-P; forty patients with probable MSA-C; twenty-five healthy controls) underwent 11 C-CFT PET. Subregional 11 C-CFT uptake of bilateral caudate, anterior putamen, and posterior putamen was calculated respectively to measure the striatal dopaminergic function. RESULTS Significant decrease in DAT binding in striatum was revealed in patients with MSA-C and MSA-P compared to normal controls (all regions, MSA-C vs controls, P < .0001; MSA-P vs controls, P < .0001). DAT reduction was more pronounced in MSA-P patients than that in MSA-C patients (all regions, P < .0001). Eleven of forty MSA-C patients displayed no DAT loss, whereas striatal DAT loss was evident in all MSA-P patients. MSA-P subtype showed a more obvious anteroposterior gradient of DAT loss and more asymmetric dopaminergic dysfunction compared to MSA-C patients. CONCLUSION The subtypes of MSA studied here show significantly different spatial/anatomic patterns of striatonigral degeneration which may provide insights into their disease pathophysiology. Specifically, MSA-P patients exhibit an uneven and much greater pronounced loss of dopamine innervation, while a relatively uniform pattern is revealed in patients with the MSA-C. Furthermore, the typical reduction in DAT 11 C-CFT binding in striatum is not present in all MSA-C patients, with a minority of cases showing normal DAT binding.
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Affiliation(s)
- L.-L. Bu
- Department of Neurology & National Clinical Research Center for Aging and Medicine; Huashan Hospital; Fudan University; Shanghai China
| | - F.-T. Liu
- Department of Neurology & National Clinical Research Center for Aging and Medicine; Huashan Hospital; Fudan University; Shanghai China
| | - C.-F. Jiang
- Department of Nuclear Medicine; Affiliated Kunshan Hospital; Jiangsu University; Kunshan China
| | - S.-S. Guo
- Department of Neurology & National Clinical Research Center for Aging and Medicine; Huashan Hospital; Fudan University; Shanghai China
| | - H. Yu
- Department of Neurology & National Clinical Research Center for Aging and Medicine; Huashan Hospital; Fudan University; Shanghai China
| | - C.-T. Zuo
- PET Center; Huashan Hospital; Fudan University; Shanghai China
- Institute of Functional and Molecular Medical Imaging; Fudan University; Shanghai China
| | - P. Wu
- PET Center; Huashan Hospital; Fudan University; Shanghai China
| | - J. Wang
- Department of Neurology & National Clinical Research Center for Aging and Medicine; Huashan Hospital; Fudan University; Shanghai China
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Xing Y, Wang JZ, Pu CW, Qu CX, Shang K, Dong N, Wu P, Wang HF. [Clinical Application Value of Peripheral Blood Diagnostic Report]. Zhonghua Yi Xue Za Zhi 2018; 97:2987-2995. [PMID: 29061005 DOI: 10.3760/cma.j.issn.0376-2491.2017.38.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinical application value of peripheral blood diagnostic report. Methods: 557 peripheral blood diagnostic reports were collected from Peking University First Hospital, YANDA LU DAOPEI Hospital and Beijing United Family Hospital. The results were analyzed and summarized according to different blood cell morphology character for the first time and review cases, respectively. Results: Two hundred and one samples from first time patients were found abnormal complete blood count or leukocyte differential count, they were summarized as anemia, anemia accompanied with leukopenia or thrombopenia, abnormal white blood cell count or leukocyte differential count and abnormal platelet count. Each condition was further distinguished on the basis of different morphology character. Initial diagnosis or further examination could be proposed if abnormal morphology was specific or typical, when blood cell morphology was atypical or normal, the morphology was described objectively. 22 review cases included many benign and malignant disorders such as acute leukemia, chronic leukemia, myelodysplastic syndrome, multiple myeloma, infectious mononucleosis and so on. Suggestion of therapeutic effect, progression of diseases or further examination could be present according to complete blood cell count and morphology character. Conclusion: Peripheral blood diagnostic report can provide more comprehensive and accurate information for clinic, and propose important advisory opinions for primary diagnosis, differential diagnosis, treatment monitoring and progression assessment.
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Affiliation(s)
- Y Xing
- Clinnical Laboratory, Peking University First Hospital, Beijing 100034, China
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Chen HJ, Wu P, Wang XG, Han CM. [Advances in the research of application of three-dimensional bioprinting in skin tissue engineering]. Zhonghua Shao Shang Za Zhi 2018; 34:422-426. [PMID: 29961302 DOI: 10.3760/cma.j.issn.1009-2587.2018.06.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Deep skin wounds require skin grafts for coverage. Current treatments such as tissue engineered skin or skin substitutes can not meet the needs of clinical application due to the technical problems involving preservation, transportation, and a lengthy preparation process. In comparison with traditional methods such as freeze-drying, three-dimensional bioprinting can precisely dispense living cells, nucleic acid, growth factor, and phase-changing hydrogels according to the wound form, while maintaining high cell viability. Besides, it has excellent performance in high resolution, flexibility, reproducibility, and high throughput, showing great potential in the fabrication of tissue engineered skin. This review mainly introduces the common techniques of three-dimensional bioprinting, and their application in skin tissue engineering, focusing on the latest research progress, and summarizes the current challenges and future development of three-dimensional skin printing.
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Affiliation(s)
- H J Chen
- Department of Burns, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
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