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Zwitterionic modified and freeze-thaw reinforced foldable hydrogel as intraocular lens for posterior capsule opacification prevention

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Biomaterials 2024年 309卷 122593-122593页

作者： Yang, Cheng-Jui Huang, Wei-Lun Yang, Yu Kuan, Chen-Hsiang Tseng, Ching-Li Wang, Tzu-Wei Department of Materials Science and Engineering National Tsing Hua University Hsinchu Taiwan Department of Ophthalmology National Taiwan University Hospital Hsin-Cchu Branch Hsinchu Taiwan Interdisciplinary Program of Life Science and Medicine National Tsing Hua University Hsinchu Taiwan Division of Plastic Surgery Department of Surgery National Taiwan University Hospital Taipei Taiwan Graduate Institute of Clinical Medicine College of Medicine National Taiwan University Taipei Taiwan Research Center for Developmental Biology and Regenerative Medicine National Taiwan University Taipei Taiwan Graduate Institute of Biomedical Materials and Tissue Engineering Taipei Medical University Taipei Taiwan

Posterior capsule opacification (PCO) is a predominant postoperative complication, often leading to visual impairment due to the aberrant proliferation and adhesion of lens epithelial cells (LECs) and protein precipitates subsequent to intraocular lens (IOL) implantation. To address this clinical issue, a foldable and antifouling sharp-edged IOL implant based on naturally-derived cellulose hydrogel is synthesized. The mechanical strength and transparency of the hydrogel is enhanced via repeated freeze-thaw (FT) cycles. The incorporated zwitterionic modifications can remarkably prevent the incidence of PCO by exhibiting proteins repulsion and cell anti-adhesion properties. The graft of dopamine onto both the haptic and the periphery of the posterior surface ensures the adhesion of the hydrogel to the posterior capsule and impedes the migration of LECs without compromising transparency. In in vivo study, the zwitterionic modified foldable hydrogel exhibits uveal and capsular biocompatibility synchronously with no signs of inflammatory response and prevent PCO formation, better than that of commercialized and PEG-modified IOL. With foldability, endurability, antifouling effect, and adhesive to posterior capsule, the reported hydrogel featuring heterogeneous surface design displays great potential to eradicate PCO and attain post-operative efficacy after cataract surgery. © 2024 Elsevier Ltd

关键词： Hydrogels

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Multimodal Spatial Attention Network for Automatic Head and Neck Tumor Segmentation in FDG-PET and CT Images 1

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2nd 3D Head and Neck Tumor Segmentation in PET/CT Challenge, HECKTOR 2021, held in conjunction with 24th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2021

作者： Cho, Minjeong Choi, Yujin Hwang, Donghwi Yie, Si Young Kim, Hanvit Lee, Jae Sung School of Electrical and Electronics Engineering Chung-Ang University Seoul06974 Korea Republic of Department of Biomedical Engineering Kyunghee University College of Electronics and Information 1732 Deogyeong-daero Giheung-gu Gyeonggi-do Yongin-si Korea Republic of Department of Nuclear Medicine Seoul National University College of Medicine Seoul03080 Korea Republic of Department of Biomedical Sciences Seoul National University College of Medicine Seoul03080 Korea Republic of Interdisciplinary Program in Bioengineering Seoul National University Graduate School Seoul Korea Republic of Integrated Major in Innovative Medical Science Seoul National University Graduate School Seoul Korea Republic of Ulsan Korea Republic of Artificial Intelligence Institute Seoul National University Seoul08826 Korea Republic of Brightonix Imaging Inc. Seoul04782 Korea Republic of

ISBN: (数字)9783030982539

ISBN: (纸本)9783030982522

Quantitative positron emission tomography/computed tomography (PET/CT), owing to the functional metabolic information and anatomical information of the human body that it presents, is useful to achieve accurate tumor delineation. However, manual annotation of a Volume Of Interest (VOI) is a labor-intensive and time-consuming task. In this study, we automatically segmented the Head and Neck (H&N) primary tumor in combined PET/CT images. Herein, we propose a convolutional neural network named Multimodal Spatial Attention Network (MSA-Net), supplemented with a Spatial Attention Module (SAM), which uses a PET image as an input. We evaluated this model on the MICCAI 2021 HEad and neCK TumOR (HECKTOR) segmentation challenge dataset. Our method delivered a competitive cross-validation efficiency, with Dice Similarity Coefficient (DSC) 0.757, precision 0.788, and recall 0.785. When we tested out method on test dataset, we achieved an average DSC and Hausdorff Distance at 95% (HD95) of 0.766 and 3.155 respectively. Our team name is ‘Heck_Uihak’. © 2022, Springer Nature Switzerland AG.

关键词： Tumors

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Towards Robust Natural-Looking Mammography Lesion Synthesis on Ipsilateral Dual-Views Breast Cancer Analysis

arXiv

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arXiv 2023年

作者： Nguyen, Thanh-Huy Kha, Quang Hien Truong, Thai Ngoc Toan Lam, Ba Thinh Ngo, Ba Hung Dinh, Quang Vinh Le, Nguyen Quoc Khanh Department of Biomedical Engineering National Cheng Kung University Taiwan International Ph.D. Program in Medicine College of Medicine Taipei Medical University Taiwan Viet Nam Ho Chi Minh City International University Viet Nam Graduate School of Data Science Chonnam National University Korea Republic of Vietnamese-German University Viet Nam Research Center for Artificial Intelligence in Medicine Taipei Medical University Taiwan Professional Master Program in Artificial Intelligence in Medicine Taiwan

In recent years, many mammographic image analysis methods have been introduced for improving cancer classification tasks. Two major issues of mammogram classification tasks are leveraging multi-view mammographic information and class-imbalance handling. In the first problem, many multi-view methods have been released for concatenating features of two or more views for the training and inference stage. Having said that, most multi-view existing methods are not explainable in the meaning of feature fusion, and treat many views equally for diagnosing. Our work aims to propose a simple but novel method for enhancing examined view (main view) by leveraging low-level feature information from the auxiliary view (ipsilateral view) before learning the high-level feature that contains the cancerous features. For the second issue, we also propose a simple but novel malignant mammogram synthesis framework for upsampling minor class samples. Our easy-to-implement and no-training framework has eliminated the current limitation of the CutMix algorithm which are unreliable synthesized images with random pasted patches, hard-contour problems, and domain shift problems. Our results on VinDr-Mammo and CMMD datasets show the effectiveness of our two new frameworks for both multi-view training and synthesizing mammographic images, outperforming the previous conventional methods in our experimental settings. © 2023, CC BY-NC-SA.

关键词： Mammography

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A biomimetic micropillar wound dressing with flavone and polyphenol control release in vitro and in vivo

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Journal of the Taiwan Institute of Chemical Engineers 2024年 160卷

作者： Cheng, Tien-Hsin Lin, Ruei-Hong Cheng, Yu-Shen Shih, Pin-Keng Show, Pau Loke Chen, Hsiao-Yi Nakmee, Pattarawadee Sumthong Chang, Jui-Jen Huang, Dong-Ming Wang, Hui-Min David Department of Chemical and Materials Engineering National Yunlin University of Science and Technology Yunlin Taiwan Graduate Institute of Biomedical Engineering National Chung Hsing University Xingda Rd. South Dist. Taichung402 China Department of Neurological Institute Taichung Veterans General Hospital Taichung China Doctoral Program in Tissue Engineering and Regenerative Medicine National Chung Hsing University Taichung China Department of Surgery China Medical University Hospital Taichung Taiwan School of Medicine China Medical University Taichung Taiwan Department of Chemical Engineering Khalifa University Abu Dhabi United Arab Emirates Faculty of Science at Sriracha Kasetsart University Sriracha Campus 199 Moo 6 Sukhumvit Rd. Chonburi Sriracha20230 Thailand Department of Medical Research China Medical University Hospital China Medical University Taichung China Institute of Biomedical Engineering and Nanomedicine National Health Research Institutes Miaoli County China Regenerative Medicine and Cell Therapy Research Center Graduate Institute of Medicine College of Medicine Kaohsiung Medical University Kaohsiung Taiwan Department of Medical Laboratory Science and Biotechnology China Medical University Taichung China

Background: Wound healing is a complex and dynamic process involving the replacement of devitalized and missing cellular structures and tissue layers. Methods: This study involved developing a drug-loaded biomimetic micropillar wound dressing based upon inspiration from witnessing the adhesive ability in a gecko's footpad. The conformal adhesion was set up by applying a soft elastomer thin film on the developed wound dressing surfaces. The results showed that the developed surfaces prepared based on polydimethylsiloxane (PDMS) had low surface free energy, high chemical stability, and good plasticity. Astaxanthin (AST) and curcumin were applied as the patch's bioactive compounds to help accelerate the wound healing process. Results: The results showed that the developed surfaces prepared based on polydimethylsiloxane (PDMS) had low surface free energy, high chemical stability, and good plasticity. Astaxanthin (AST) and curcumin were applied as the patch's bioactive compounds to help accelerate the wound healing process. The results indicate that the developed biomimetic micropillar patches could release the loaded drugs and significantly increase cell viability and collagen content to 20 % ∼ 25 % in vitro and in vivo. Conclusion: In summation, the primary purpose of this study has been to design a novel encapsulated carrier (micropillar patch) for use in adjustable drug release, while combining with the biomimetic microstructure to reach wound healing through percutaneous absorption. © 2024 Taiwan Institute of Chemical Engineers

关键词： Chemical stability

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Numerical Evaluation of Low-Head Inverted Cross-Flow Turbine Design Methodology: A Comprehensive Study

SSRN

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SSRN 2023年

作者： Ha, Hojin Ham, Sangwoo Ehsan, Adeeb Lee, Jeong Wan Interdisciplinary Program in Biohealth-Machinery Convergence Engineering Kangwon National University 1 Kangwondaehak-gil Gangwon-do Chuncheon-si24341 Korea Republic of Division of Mechanical & Biomedical Mechatronics and Materials Science and Engineering Kangwon National University 1 Kangwondaehak-gil Gangwon-do Chuncheon-si24341 Korea Republic of Kangwon Institute of Inclusive Technology Kangwon National University 1 Kangwondaehak-gil Gangwon-do Chuncheon-si24341 Korea Republic of

In this study, we aim to address the challenges of micro-hydropower generation in low-head environments. The authors reviewed and assessed various factors affecting the feasibility of micro-hydro systems, such as geographical constraints, construction costs, and grid connectivity. To overcome the limitations of conventional hydro turbines in such conditions, the authors proposed a novel cross-flow turbine. Initially, they designed and analyzed an inverted cross-flow turbine based on design rules established by previous researchers and performed numerical analyses. Four steps parametric studies were conducted to achieved optimum turbine values, such as runner diameter ratio and the number of blades, considering the maximum efficiency point from the previous step. The best efficiency point of the optimized design turbine was 72.92 % at a runner rotational speed of 170 RPM with a 0.75 runner diameter ratio and 35 blades. To validate the optimized design, the authors compared it with the initial design using hill charts and numerical values obtained from parametric studies. Overall, this research demonstrates the usefulness of computational fluid dynamics simulations and parametric studies in optimizing the design of an inverted cross-flow turbine under low head conditions. © 2023, The Authors. All rights reserved.

关键词： Computational fluid dynamics

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Author Correction: SARS-CoV-2 infection engenders heterogeneous ribonucleoprotein interactions to impede translation elongation in the lungs

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EXPERIMENTAL AND MOLECULAR MEDICINE 2023年第12期55卷 2609-2609页

作者： Kim, Junsoo Youn, Daehwa Choi, Seunghoon Lee, Youn Woo Sumberzul, Dulguun Yoon, Jeongeun Lee, Hanju Bae, Jong Woo Noh, Hyuna On, Dain Hong, Seung-Min An, Se-Hee Jang, Hui Jeong Kim, Seo Yeon Kim, Young Been Hwang, Ji-Yeon Lee, Hyo-Jung Kim, Hong Bin Park, Jun Won Yun, Jun-Won Shin, Jeon-Soo Seo, Jun-Young Nam, Ki Taek Choi, Kang-Seuk Lee, Ho-Young Chang, Hyeshik Seong, Je Kyung Cho, Jun Center for RNA Research Institute for Basic Science (IBS) Seoul National University Seoul Republic of Korea Interdisciplinary Program in Bioinformatics Seoul National University Seoul Republic of Korea School of Biological Sciences Seoul National University Seoul Republic of Korea Korea Mouse Phenotyping Center (KMPC) Seoul National University Seoul Republic of Korea Laboratory of Developmental Biology and Genomics Research Institute for Veterinary Science and BK 21 PLUS Program for Creative Veterinary Science Research College of Veterinary Medicine Seoul National University Seoul Republic of Korea Interdisciplinary Program and BIO MAX Institute Seoul National University Seoul Republic of Korea Department of Biomedical Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju Republic of Korea Department of Nuclear Medicine Seoul National University Bundang Hospital Seongnam Republic of Korea Department of Nuclear Medicine Seoul National University College of Medicine Seoul Republic of Korea Laboratory of Avian Diseases Research Institute for Veterinary Science and BK 21 PLUS Program for Creative Veterinary Science Research College of Veterinary Medicine Seoul National University Seoul Republic of Korea Preclinical Research Center Seoul National University Bundang Hospital Seongnam Republic of Korea Department of Periodontology Section of Dentistry Seoul National University Bundang Hospital Seongnam Republic of Korea Department of Internal Medicine Seoul National University Bundang Hospital Seoul National University College of Medicine Seongnam Republic of Korea Division of Biomedical Convergence College of Biomedical Science Kangwon National University ChunCheon Republic of Korea Laboratory of Veterinary Toxicology College of Veterinary Medicine Seoul National University Seoul Republic of Korea Severance Biomedical Science Institute Graduate School of Medical Science Brain Korea 21 Project Yonsei University College of Medicine

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Self-Healable Sandfish Scale-Inspired Scalable Triboelectric Layer for Hybrid Energy Harvesting in Desert Environment (Small 4/2025)

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Small 2025年第4期21卷

作者： An-Rong Chen Parag Parashar Manish Kumar Sharma Jing-Siang Shih Hsuan-Yu Yeh Yen-Jui Lin Kuldeep Kaswan Kai-Po Fan Po-Yu Chen Zong-Hong Lin Department of Materials Science and Engineering National Tsing Hua University Hsinchu 30013 Taiwan Department of Biomedical Engineering National Taiwan University Taipei 10617 Taiwan Institute of Biomedical Engineering National Tsing Hua University Hsinchu 30013 Taiwan International Intercollegiate Ph.D. Program National Tsing Hua University Hsinchu 30013 Taiwan

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Bayesian non-parametric clustering of single-cell mutation profiles 24th

Bayesian non-parametric clustering of single-cell mutation p...

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24th Annual Conference on Research in Computational Molecular Biology, RECOMB 2020

作者： Borgsmüller, Nico Bonet, Jose Marass, Francesco Gonzalez-Perez, Abel Lopez-Bigas, Nuria Beerenwinkel, Niko Department of Biosystems Science and Engineering ETH Zürich Basel Switzerland SIB Swiss Institute of Bioinformatics Basel Switzerland The Barcelona Institute of Science and Technology Barcelona Spain Research Program on Biomedical Informatics Universitat Pompeu Fabra Barcelona Spain Barcelona Spain

Cancer is an evolutionary process characterized by the accumulation of mutations that drive tumor initiation, progression, and treatment resistance. © Springer Nature Switzerland AG 2020.

ISBN: (纸本)9783030452568

Cancer is an evolutionary process characterized by the accumulation of mutations that drive tumor initiation, progression, and treatment resistance. © Springer Nature Switzerland AG 2020.

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Polyvinyl chloride microplastics and drought co-exposure alter rice growth by affecting metabolomics and proteomics

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science of the Total Environment 2024年 955卷 177002页

作者： Khan, Kiran Yasmin Ali, Barkat Ghani, Hafiz Usman Cui, Xiaoqiang Luo, Xiaohan Ali, Zeshan Ahmed, Waqar Tan, Jinglu Lysenko, Vladimir Guo, Ya Key Laboratory of Advanced Process Control for Light Industry Ministry of Education Jiangnan University Wuxi214122 China Food Science Research Institute National Agricultural Research Centre Islamabad44000 Pakistan Hebei Medical University Shijiazhuang050000 China School of Environmental Science and Engineering/Tianjin Key Lab of Biomass Waste Utilization Tianjin University Tianjin300072 China Ecotoxicology Research Program Institute of Plant and Environmental Protection National Agriculture Research Center Islamabad44000 Pakistan Department of Biomedical Biological & Chemical Engineering University of Missouri ColumbiaMO65211 United States Southern Federal University Academy of Biology and Biotechnology Rostov-on-Don344041 Russia International Joint Research Center for Intelligent Optical Sensing and Applications at Jiangnan University Wuxi214122 China

Microplastics, interacting with drought stress, have become threat to crops by altering soil environment. Currently, the effect of combined microplastic and drought stress on crop growth remain poorly understood. In this work, the mechanism of multi-stress responses was investigated under the exposure of polvinylchloride microplastic (PV) and drought (D) individually and in combination (DPV) on rice varieties Hanyou73 and Q280 through proteomics and metabolomic analysis. All treatments negatively affect chlorophyll content, antioxidant enzyme activities, rice grain composition, metabolome and proteomic profiling of both rice varieties. Full rice grain yield was decreased under all treatments except PV treatment in which it was increased in both rice varieties. DPV treatment shows the lowest grain yield and more adverse effects on metabolome by affecting glycerophospholipid metabolism, tryptophan metabolism and alanine, aspartate and glutamate metabolism. Soluble sugar contents were decreased in H73 but in Q280 increased by 159 % under DPV and 123 % in PV treatment, compared to their control group. The results from metabolomics illustrate that glycerophospholipid metabolism is commonly altered in both rice types under all treatments. PV and drought alone and in combination induce extensive alterations in proteomics of rice leaves especially impacting proteins related to binding, translation and photosynthetic process. The results reveal that PV and DPV treatments highly distort the abundance of metabolites and proteins in both rice types, demonstrating that microplastic toxicity effects on rice plants become more severe when combined with drought stress. © 2024 Elsevier B.V.

关键词： Drought Metabolite Polyvinyl chloride microplastic Protein Rice

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Evidence for autotrophic growth of purple sulfur bacteria using pyrite as electron and sulfur source (vol 90, e00863, 2024)

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APPLIED AND ENVIRONMENTAL MICROBIOLOGY 2024年第9期90卷 e00863-24-e00863-24页

作者： Alarcon, Hugo V. Mohl, Jonathon E. Chong, Grace W. Betancourt, Ana Wang, Yi Leng, Weinan White, Jason C. Xu, Jie Environmental Science and Engineering Program the University of Texas at El Paso El Paso Texas USA Department of Mathematical Sciences the University of Texas at El Paso El Paso Texas USA Border Biomedical Research Center the University of Texas at El Paso El Paso Texas USA Department of Earth Environmental and Resource Sciences the University of Texas at El Paso El Paso Texas USA The Connecticut Agricultural Experiment Station New Haven Connecticut USA The National Center for Earth and Environmental Nanotechnology Infrastructure Blacksburg Virginia USA School of Molecular Sciences Arizona State University Tempe Arizona USA

Purple sulfur bacteria (PSB) are capable of anoxygenic photosynthesis via oxidizing reduced sulfur compounds and are considered key drivers of the sulfur cycle in a range of anoxic environments. In this study, we show that Allochromatium vinosum (a PSB species) is capable of autotrophic growth using pyrite as the electron and sulfur source. Comparative growth profile, substrate characterization, and transcriptomic sequencing data provided valuable insight into the molecular mechanisms underlying the bacterial utilization of pyrite and autotrophic growth. Specifically, the pyrite-supported cell cultures (“py”’) demonstrated robust but much slower growth rates and distinct patterns from their sodium sulfide-amended positive controls. Up to ~200-fold upregulation of genes encoding various c- and b-type cytochromes was observed in “py,” pointing to the high relevance of these molecules in scavenging and relaying electrons from pyrite to cytoplasmic metabolisms. Conversely, extensive downregulation of genes related to LH and RC complex components indicates that the electron source may have direct control over the bacterial cells’ photosynthetic activity. In terms of sulfur metabolism, genes encoding periplasmic or membrane-bound proteins (e.g., FccAB and SoxYZ) were largely upregulated, whereas those encoding cytoplasmic proteins (e.g., Dsr and Apr groups) are extensively suppressed. Other notable differentially expressed genes are related to flagella/fimbriae/pilin(+), metal efflux(+), ferrienterochelin(−), and [NiFe] hydrogenases(+). Characterization of the biologically reacted pyrite indicates the presence of polymeric sulfur. These results have, for the first time, put the interplay of PSB and transition metal sulfide chemistry under the spotlight, with the potential to advance multiple fields, including metal and sulfur biogeochemistry, bacterial extracellular electron transfer, and artificial photosynthesis.

关键词： purple sulfur bacteria pyrite anoxygenic photosynthesis transcriptomic sequencing cytochrome iron sulfur cluster Allochromatium vinosum

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