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Cycling on the Freeway: The Perilous State of Open Source Neuroscience Software 在高速公路上骑车开源神经科学软件的危险状况
Pub Date : 2024-03-28 DOI: arxiv-2403.19394
Britta U. Westner, Daniel R. McCloy, Eric Larson, Alexandre Gramfort, Daniel S. Katz, Arfon M. Smith, invited co-signees
Most scientists need software to perform their research (Barker et al., 2020;Carver et al., 2022; Hettrick, 2014; Hettrick et al., 2014; Switters and Osimo,2019), and neuroscientists are no exception. Whether we work with reactiontimes, electrophysiological signals, or magnetic resonance imaging data, werely on software to acquire, analyze, and statistically evaluate the raw datawe obtain - or to generate such data if we work with simulations. In recentyears there has been a shift toward relying on free, open-source scientificsoftware (FOSSS) for neuroscience data analysis (Poldrack et al., 2019), inline with the broader open science movement in academia (McKiernan et al.,2016) and wider industry trends (Eghbal, 2016). Importantly, FOSSS is typicallydeveloped by working scientists (not professional software developers) whichsets up a precarious situation given the nature of the typical academicworkplace (wherein academics, especially in their early careers, are on shortand fixed term contracts). In this paper, we will argue that the existingecosystem of neuroscientific open source software is brittle, and discuss whyand how the neuroscience community needs to come together to ensure a healthygrowth of our software landscape to the benefit of all.
大多数科学家都需要软件来完成他们的研究(Barker et al.,2020;Carver et al.,2022;Hettrick,2014;Hettrick et al.,2014;Switters and Osimo,2019),神经科学家也不例外。无论我们研究的是反应时、电生理信号还是磁共振成像数据,我们都依赖软件来获取、分析和统计评估我们获得的原始数据,如果我们研究的是模拟数据,则需要软件来生成这些数据。近年来,神经科学数据分析开始转向依赖免费开源科学软件(FOSSS)(Poldrack 等人,2019 年),这与学术界更广泛的开放科学运动(McKiernan 等人,2016 年)和更广泛的行业趋势(Eghbal,2016 年)是一致的。重要的是,FOSSS 通常是由在职科学家(而非专业软件开发人员)开发的,鉴于典型学术工作场所的性质(学术界人士,尤其是处于职业生涯早期的人士,都是签订短期和固定期限合同),这就造成了一种不稳定的局面。在本文中,我们将论证现有的神经科学开源软件生态系统是脆弱的,并讨论为什么神经科学社区需要团结起来,以确保我们的软件环境健康发展,造福所有人。
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引用次数: 0
Bioinformatics and Biomedical Informatics with ChatGPT: Year One Review 生物信息学和生物医学信息学 ChatGPT:第一年回顾
Pub Date : 2024-03-22 DOI: arxiv-2403.15274
Jinge Wang, Zien Cheng, Qiuming Yao, Li Liu, Dong Xu, Gangqing Hu
The year 2023 marked a significant surge in the exploration of applying largelanguage model (LLM) chatbots, notably ChatGPT, across various disciplines. Wesurveyed the applications of ChatGPT in various sectors of bioinformatics andbiomedical informatics throughout the year, covering omics, genetics,biomedical text mining, drug discovery, biomedical image understanding,bioinformatics programming, and bioinformatics education. Our survey delineatesthe current strengths and limitations of this chatbot in bioinformatics andoffers insights into potential avenues for future development.
2023 年是探索大型语言模型(LLM)聊天机器人(尤其是 ChatGPT)在各学科应用的重要一年。在这一年中,我们调查了 ChatGPT 在生物信息学和生物医学信息学各领域的应用情况,涉及omics、遗传学、生物医学文本挖掘、药物发现、生物医学图像理解、生物信息学编程和生物信息学教育。我们的调查描述了该聊天机器人目前在生物信息学领域的优势和局限性,并对未来发展的潜在途径提出了见解。
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引用次数: 0
Investigation of Genomic Effect of Zirconium Oxide Nanoparticles in Escherichia coli Bacteria 氧化锆纳米粒子对大肠杆菌基因组效应的研究
Pub Date : 2024-03-21 DOI: arxiv-2403.14728
Simin Rashidia, b, Bahram Golestani Eimania
Due to the concerns of the society about the increase of antibiotic resistantinfections, many studies and research have been done on nanoparticles andapplications of nano-biotechnology. Zirconium Oxide ($text{ZrO}_{2}$) in whichcalled zirconia, is a white oxide of zirconium metal that its diameter is 20nm. The colloidal size of these particles is often smaller than bacterial andeukaryotic cells. The main intention of this paper is to investigate the effectof different doses of $text{ZrO}_{2}$ NPs on the sequences changes for the$textit{Escherichia coli}$ ($textit{E. coli}$) genome. At the first step,$textit{E. coli}$ was cultured in eosin methylene blue agar and brain heartbroth (BHB) mediums, respectively. Then, bacteria were treated with$text{ZrO}_{2}$ NPs at concentrations of 100, 250, and 350 $mu$g/ml. Aftertreatment, the growth of bacteria was evaluated by utilizing spectrophotometryat 600 nm after incubation times including 2, 4, 6, 8, and 24 hours at 37$^{circ}$C. At the second step, the extraction of DNA was performed by usingcontrol and treated samples. Then, the changes in the sequence of bacterialgenome were investigated using RAPD markers. Finally, NTSYS-PC platform wasemployed in order to analyze of the results extracted by electrophoresis ofproducts on agarose gel. In this paper, it was observed that $text{ZrO}_{2}$NPs can inhibit the growth of bacteria at concentrations of 250 and 350$mu$g/ml after 8 hours of treatment. It was also found that the$text{ZrO}_{2}$ NPs at different concentrations have not changed the genomesequence of $textit{E. coli}$. Furthermore, it was concluded that the$text{ZrO}_{2}$ NPs with the concentration of 350 $mu$g/ml had the highestinhibitory properties without significant changing in the genomic sequence of$textit{E. coli}$.
由于社会对抗生素耐药性感染增加的担忧,人们对纳米粒子和纳米生物技术的应用进行了大量研究。氧化锆($text{ZrO}_{2}$)被称为氧化锆,是锆金属的白色氧化物,直径为 20 纳米。这些颗粒的胶体尺寸通常小于细菌和真核细胞。本文的主要目的是研究不同剂量的 $text{ZrO}_{2}$ NPs 对 $textit{Escherichia coli}$ ($textit{E. coli}$)基因组序列变化的影响。首先,分别在曙红亚甲蓝琼脂和脑心草(BHB)培养基中培养$textit{大肠杆菌}$。然后用浓度为 100、250 和 350 $mu$g/ml 的 NPs 处理细菌。处理后,在 37$^{circ}$C 温度下培养 2、4、6、8 和 24 小时后,用 600 纳米分光光度法评估细菌的生长情况。第二步,使用对照样本和处理样本提取 DNA。然后,使用 RAPD 标记研究细菌基因组序列的变化。最后,使用 NTSYS-PC 平台对琼脂糖凝胶电泳提取的结果进行分析。本文观察到,$text{ZrO}_{2}$NPs 在 250 和 350$mu$g/ml 的浓度下处理 8 小时后可以抑制细菌的生长。研究还发现,不同浓度的$text{ZrO}_{2}$NPs并没有改变$textit{大肠杆菌}$的基因组序列。此外,研究还得出结论:浓度为 350 毫微克/毫升的 NPs 对大肠杆菌的抑制作用最强,且不会明显改变大肠杆菌的基因组序列。
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引用次数: 0
Valeur des tests PACE et CTB_ELISA dans le diagnostic de la peste porcine classique (PPC) et le contr{ô}le de qualit{é} du vaccin correspondant {à} Madagascar PACE 和 CTB_ELISA 检测在诊断典型猪瘟 (CSF) 和相应疫苗质量控制中的价值{在}马达加斯加
Pub Date : 2024-03-19 DOI: arxiv-2403.13853
Of MaminiainaFOFIFA-DRZVP, IMVAVET, M. KokoIMVAVET, J. J. RajaonarisonIMVAVET, R. RazafindrakotoIMVAVET, J. RavaomananaFOFIFA-DRZVP, A. D. Shannon
From 1994, we began to use ELISA (Enzyme Linked Immunosorbent Assay) in thediagnosis of PCP. This is aELISA for capturing antigens (PACE) possiblycontained in the samples. The advantage of this test comes from the fact thatit is completelyindependent of cell cultures. In addition, it is fast: theresult can be obtained in less than 36 hours. A study of itsstandardizationcarried out in Australia gave a sensitivity (Se) of 99%, aspecificity (Sp) close to 100% and a negative predictive value (NPV) of 99.7%.Due to its high specificity, the test gives a negative result to all truenegatives, in other words, the negatives of the test correspond to thetruenegatives. A variant of the capture ELISA, the CTB-ELISA or complex trappingblocking ELISA allows the quantity of antibodies to be measureddirected againstthe non-structural protein, p80 (or NS3), contained in animal sera. Evaluationof the level of anti-NS3 antibodiesconstitutes an excellent assessment of thelevel of neutralizing antibodies because the correlation coefficient betweenthese two types of antibodies, the firstobtained by CTB-ELISA, and the secondby serum neutralization (VNT), is very high (r = 0.98).The two tests beingcapable, one of detecting pestiviral antigens and the other of measuringantibodies specific to each of thegroups, constitutes an excellent tool for thequalitative control of anti-CSF vaccine.
从 1994 年起,我们开始使用 ELISA(酶联免疫吸附试验)诊断五氯苯酚。这是一种用于捕捉样本中可能含有的抗原(PACE)的酶联免疫吸附试验。这种检测方法的优势在于它完全不依赖于细胞培养。此外,它还具有快速的特点:在 36 小时内即可获得结果。在澳大利亚进行的一项标准化研究显示,该检测方法的灵敏度(Se)为 99%,特异度(Sp)接近 100%,阴性预测值(NPV)为 99.7%。捕获酶联免疫吸附试验的一种变体 CTB-ELISA 或复合捕获阻断酶联免疫吸附试验可测定动物血清中针对非结构蛋白 p80(或 NS3)的抗体数量。抗 NS3 抗体水平的评估可以很好地评估中和抗体的水平,因为这两种抗体(第一种通过 CTB-ELISA 获得,第二种通过血清中和(VNT)获得)之间的相关系数非常高(r = 0.98)。
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引用次数: 0
Propensity-score matching analysis in COVID-19-related studies: a method and quality systematic review COVID-19 相关研究中的倾向分数匹配分析:方法与质量系统综述
Pub Date : 2024-03-10 DOI: arxiv-2403.07023
Chunhui Gu, Ruosha Li, Guoqiang Zhang
Objectives: To provide an overall quality assessment of the methods used forCOVID-19-related studies using propensity score matching (PSM). Study Design and Setting: A systematic search was conducted in June 2021 onPubMed to identify COVID-19-related studies that use the PSM analysis between2020 and 2021. Key information about study design and PSM analysis wereextracted, such as covariates, matching algorithm, and reporting of estimatedtreatment effect type. Results: One-hundred-and-fifty (87.72%) cohort studies and thirteen (7.60%)case-control studies were found among 171 identified articles. Forty-fivestudies (26.32%) provided a reasonable justification for covariates selection.One-hundred-and-three (60.23%) and Sixty-nine (40.35%) studies did not providethe model that was used for calculating the propensity score or did not reportthe matching algorithm, respectively. Seventy-three (42.69%) studies reportedthe method(s) for checking covariates balance. Forty studies (23.39%) had astatistician co-author. All the case-control studies (n=13) did not have astatistician co-author (p=0.006) and all studies that clarified the treatmenteffect estimation (n=6) had a statistician co-author (p<0.001). Conclusions: The reporting quality of the PSM analysis is suboptimal in someCOVID-19 epidemiological studies. Some pitfalls may undermine study findingsthat involve PSM analysis, such as a mismatch between PSM analysis and studydesign.
目的:使用倾向得分匹配法 (PSM) 对与 COVID-19 相关的研究进行总体质量评估。研究设计与背景:2021 年 6 月在 PubMed 上进行了系统检索,以确定 2020 年至 2021 年期间使用 PSM 分析的 COVID-19 相关研究。提取了有关研究设计和 PSM 分析的关键信息,如协变量、匹配算法和估计治疗效果类型的报告。结果在 171 篇鉴定文章中发现了 150 项队列研究(87.72%)和 13 项病例对照研究(7.60%)。有 44 项研究(26.32%)提供了选择协变量的合理理由。有 103 项研究(60.23%)和 69 项研究(40.35%)没有提供用于计算倾向评分的模型,也没有报告匹配算法。73项(42.69%)研究报告了检查协变量平衡的方法。40项研究(23.39%)有统计学家作为共同作者。所有病例对照研究(13 项)均无统计学家合著(P=0.006),所有澄清治疗效果估计的研究(6 项)均有统计学家合著(P<0.001)。结论在一些COVID-19流行病学研究中,PSM分析的报告质量并不理想。一些误区可能会影响涉及 PSM 分析的研究结果,如 PSM 分析与研究设计不匹配。
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引用次数: 0
Nano/micro-plastics effects in agricultural landscapes: an overlooked threat to pollination, biological pest control, and food security 农业景观中的纳米/微塑料效应:对授粉、生物害虫控制和粮食安全的一个被忽视的威胁
Pub Date : 2024-03-07 DOI: arxiv-2403.04920
Dong ShengSustainable Agricultural Systems & Engineering Lab, School of Engineering, Westlake University, Hangzhou, ChinaKey Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, ChinaCollege of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China, Siyuan JingSustainable Agricultural Systems & Engineering Lab, School of Engineering, Westlake University, Hangzhou, ChinaKey Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, ChinaDepartment of Environmental Science and Engineering, Fudan University, Shanghai, China, Xueqing HeSustainable Agricultural Systems & Engineering Lab, School of Engineering, Westlake University, Hangzhou, ChinaDepartment of Health and Environmental Sciences, Xian Jiaotong-Liverpool University, Suzhou, China, Alexandra-Maria KleinNature Conservation and Landscape Ecology, University of Freiburg, Freiburg, Germany, Heinz-R. KöhlerAnimal Physiological Ecology, Institute of Evolution and Ecology, University of Tuebingen, Tuebingen, Germany, Thomas C. WangerSustainable Agricultural Systems & Engineering Lab, School of Engineering, Westlake University, Hangzhou, ChinaKey Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, ChinaAgroecology, University of Goettingen, Goettingen, Germany
Biodiversity-associated ecosystem services such as pollination and biocontrolmay be severely affected by emerging nano/micro-plastics (NMP) pollution. Wesynthesized the little-explored effects of NMP on pollinators and biocontrolagents on the organismal, farm and landscape scale. For instance ingested NMPtrigger organismal changes from gene expression, organ damage to behaviormodifications. At the farm and landscape level, NMP will likely amplifysynergistic effects with other threats such as pathogens and antibiotics, andmay alter landscape properties such as floral resource distributions in highNMP concentration areas, what we call NMP islands. It is essential tounderstand the functional exposure pathways of NMP on pollinators andbiocontrol agents to comprehensively evaluate the risks for agriculturalecosystems and global food security.
与生物多样性相关的生态系统服务(如授粉和生物控制)可能会受到新出现的纳米/微塑料(NMP)污染的严重影响。我们研究了 NMP 在生物体、农场和景观尺度上对授粉者和生物控制剂的影响,但对这些影响的研究甚少。例如,摄入的 NMP 会引发生物体的变化,包括基因表达、器官损伤和行为改变。在农场和景观层面,NMP 可能会扩大与病原体和抗生素等其他威胁的协同效应,并可能改变景观特性,如 NMP 高浓度区域(我们称之为 NMP 岛)的花卉资源分布。要全面评估 NMP 对农业生态系统和全球粮食安全的风险,就必须了解 NMP 对授粉昆虫和生物控制剂的功能性暴露途径。
{"title":"Nano/micro-plastics effects in agricultural landscapes: an overlooked threat to pollination, biological pest control, and food security","authors":"Dong ShengSustainable Agricultural Systems & Engineering Lab, School of Engineering, Westlake University, Hangzhou, ChinaKey Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, ChinaCollege of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China, Siyuan JingSustainable Agricultural Systems & Engineering Lab, School of Engineering, Westlake University, Hangzhou, ChinaKey Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, ChinaDepartment of Environmental Science and Engineering, Fudan University, Shanghai, China, Xueqing HeSustainable Agricultural Systems & Engineering Lab, School of Engineering, Westlake University, Hangzhou, ChinaDepartment of Health and Environmental Sciences, Xian Jiaotong-Liverpool University, Suzhou, China, Alexandra-Maria KleinNature Conservation and Landscape Ecology, University of Freiburg, Freiburg, Germany, Heinz-R. KöhlerAnimal Physiological Ecology, Institute of Evolution and Ecology, University of Tuebingen, Tuebingen, Germany, Thomas C. WangerSustainable Agricultural Systems & Engineering Lab, School of Engineering, Westlake University, Hangzhou, ChinaKey Laboratory of Coastal Environment and Resources of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, ChinaAgroecology, University of Goettingen, Goettingen, Germany","doi":"arxiv-2403.04920","DOIUrl":"https://doi.org/arxiv-2403.04920","url":null,"abstract":"Biodiversity-associated ecosystem services such as pollination and biocontrol\u0000may be severely affected by emerging nano/micro-plastics (NMP) pollution. We\u0000synthesized the little-explored effects of NMP on pollinators and biocontrol\u0000agents on the organismal, farm and landscape scale. For instance ingested NMP\u0000trigger organismal changes from gene expression, organ damage to behavior\u0000modifications. At the farm and landscape level, NMP will likely amplify\u0000synergistic effects with other threats such as pathogens and antibiotics, and\u0000may alter landscape properties such as floral resource distributions in high\u0000NMP concentration areas, what we call NMP islands. It is essential to\u0000understand the functional exposure pathways of NMP on pollinators and\u0000biocontrol agents to comprehensively evaluate the risks for agricultural\u0000ecosystems and global food security.","PeriodicalId":501219,"journal":{"name":"arXiv - QuanBio - Other Quantitative Biology","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140098648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical Screening of Citrus Leaf Diseases Using Label-Free Spectroscopic Tools: A Review 利用无标签光谱工具对柑橘叶片病害进行光学筛选:综述
Pub Date : 2024-03-07 DOI: arxiv-2403.04820
Saurav Bharadwaj, Akshita Midha, Shikha Sharma, Gurupkar Singh Sidhu, Rajesh Kumar
Citrus diseases pose threats to citrus farming and result in economic lossesworldwide. Nucleic acid and serology-based methods of detection and,immunochromatographic assays are commonly used but these laboratory tests arelaborious, expensive and might be subjected to cross-reaction andcontamination. Modern optical spectroscopic techniques offer a promisingalternative as they are label-free, sensitive, rapid, non-destructive, anddemonstrate the potential for incorporation into an autonomous system fordisease detection in citrus orchards. Nevertheless, the majority of opticalspectroscopic methods for citrus disease detection are still in the trialphases and, require additional efforts to be established as efficient andcommercially viable methods. The review presents an overview of fundamentalworking principles, the state of the art, and explains the applications andlimitations of the optical spectroscopy technique including the spectroscopicimaging approach (hyperspectral imaging) in the identification of diseases incitrus plants. The review highlights (1) the technical specifications ofoptical spectroscopic tools that can potentially be utilized in fieldmeasurements, (2) their applications in screening citrus diseases through leafspectroscopy, and (3) discusses their benefits and limitations, includingfuture insights into label-free identification of citrus diseases. Moreover,the role of artificial intelligence is reviewed as potential effective toolsfor spectral analysis, enabling more accurate detection of infected citrusleaves even before the appearance of visual symptoms by leveragingcompositional, morphological, and chemometric characteristics of the plantleaves. The review aims to encourage stakeholders to enhance the developmentand commercialization of field-based, label-free optical tools for the rapidand early-stage screening of citrus diseases in plants.
柑橘病害对柑橘种植业构成威胁,并在全球范围内造成经济损失。通常使用基于核酸和血清学的检测方法以及免疫层析检测法,但这些实验室检测方法费时费力、成本高昂,而且可能会产生交叉反应和污染。现代光学光谱技术提供了一种很有前景的替代方法,因为它们无需标记、灵敏、快速、无破坏性,并证明了将其纳入柑橘园疾病检测自主系统的潜力。尽管如此,用于柑橘病害检测的大多数光学光谱方法仍处于试验阶段,需要进一步努力才能成为高效且商业上可行的方法。本综述概述了光学光谱技术的基本工作原理和技术现状,并解释了光学光谱技术(包括光谱成像方法(高光谱成像))在识别柑橘植物病害方面的应用和局限性。综述重点介绍了:(1) 有可能用于实地测量的光学光谱工具的技术规格;(2) 它们在通过叶片光谱筛选柑橘病害方面的应用;(3) 讨论了它们的优点和局限性,包括对柑橘病害无标记鉴定的未来展望。此外,文章还评述了人工智能作为光谱分析潜在有效工具的作用,通过利用植物叶片的构成、形态和化学计量特征,甚至在出现视觉症状之前就能更准确地检测出受感染的柑橘叶片。该综述旨在鼓励利益相关者加强基于现场的无标记光学工具的开发和商业化,以便对柑橘植物病害进行快速和早期筛查。
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引用次数: 0
Creating and troubleshooting microscopy analysis workflows: common challenges and common solutions 创建显微镜分析工作流程并排除故障:常见挑战和常见解决方案
Pub Date : 2024-03-06 DOI: arxiv-2403.04520
Beth A Cimini
As microscopy diversifies and becomes ever-more complex, the problem ofquantification of microscopy images has emerged as a major roadblock for manyresearchers. All researchers must face certain challenges in turning microscopyimages into answers, independent of their scientific question and the imagesthey've generated. Challenges may arise at many stages throughout the analysisprocess, including handling of the image files, image pre-processing, objectfinding, or measurement, and statistical analysis. While the exact solutionrequired for each obstacle will be problem-specific, by understanding tools andtradeoffs, optimizing data quality, breaking workflows and data sets intochunks, talking to experts, and thoroughly documenting what has been done,analysts at any experience level can learn to overcome these challenges andcreate better and easier image analyses.
随着显微技术的多样化和日益复杂化,显微图像的量化问题已成为许多研究人员的主要障碍。在将显微图像转化为答案的过程中,所有研究人员都必须面对一定的挑战,这与他们的科学问题和所生成的图像无关。挑战可能出现在整个分析过程的许多阶段,包括处理图像文件、图像预处理、目标查找或测量以及统计分析。虽然每个障碍所需的确切解决方案都会因问题而异,但通过了解工具和折衷方案、优化数据质量、将工作流程和数据集分成若干小块、与专家交流以及彻底记录所做的工作,任何经验水平的分析师都能学会克服这些挑战,并创建更好、更简单的图像分析。
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引用次数: 0
From virtual patients to digital twins in immuno-oncology: lessons learned from mechanistic quantitative systems pharmacology modeling 免疫肿瘤学中从虚拟患者到数字双胞胎:从机理定量系统药理学建模中汲取的经验教训
Pub Date : 2024-03-05 DOI: arxiv-2403.03335
Hanwen WangDepartment of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA, Theinmozhi ArulrajDepartment of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA, Alberto IppolitoDepartment of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA, Aleksander S. PopelDepartment of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USADepartments of Medicine and Oncology, and the Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
Virtual patients and digital patients/twins are two similar concepts gainingincreasing attention in health care with goals to accelerate drug developmentand improve patients' survival, but with their own limitations. Althoughmethods have been proposed to generate virtual patient populations usingmechanistic models, there are limited number of applications in immuno-oncologyresearch. Furthermore, due to the stricter requirements of digital twins, theyare often generated in a study-specific manner with models customized toparticular clinical settings (e.g., treatment, cancer, and data types). Here,we discuss the challenges for virtual patient generation in immuno-oncologywith our most recent experiences, initiatives to develop digital twins, and howresearch on these two concepts can inform each other.
虚拟病人和数字病人/双胞胎是两个类似的概念,在医疗保健领域日益受到关注,其目标是加快药物开发和提高病人生存率,但也有各自的局限性。虽然有人提出了利用机理模型生成虚拟患者群体的方法,但在免疫肿瘤学研究中的应用数量有限。此外,由于数字孪生有更严格的要求,它们通常是以特定研究的方式生成的,模型是根据特定临床环境(如治疗、癌症和数据类型)定制的。在此,我们将讨论免疫肿瘤学虚拟病人生成所面临的挑战,以及我们的最新经验、开发数字孪生的举措,以及这两个概念的研究如何相互借鉴。
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引用次数: 0
Postharvest litchi (Litchi chinensis Sonn.) quality preservation by alginate oligosaccharides 海藻酸寡糖对荔枝采后品质的保护作用
Pub Date : 2024-03-03 DOI: arxiv-2403.01383
Jianlie Shen, Shulin Wan, Haidong Tan
This study investigates the efficacy of alginate oligosaccharides, derivedfrom a novel alginate lyase expressed in E. coli (Pet21a-alginate lyase), inpreserving the postharvest quality of litchi (Litchi chinensis Sonn.) fruits.The alginate lyase, characterized by Huang et al. (2013), was employed toproduce AOS through enzymatic degradation of alginate. The resultingoligosaccharides were applied to litchi fruits harvested from GuangzhouZengcheng to evaluate their impact on various quality parameters undercontrolled storage conditions. The study focused on measuring the effects ofalginate oligosaccharide treatment on the fruits' color retention, water lossrate, hardness, and susceptibility to mold infection, under a set relativehumidity and temperature. Results demonstrated significant improvements in thetreated fruits, with enhanced color retention, reduced water loss, maintainedhardness, and lower rates of mold infection compared to untreated controls.These findings suggest that AOS offer a promising natural alternative forextending the shelf life and maintaining the quality of litchi fruitspostharvest.
本研究探讨了由大肠杆菌表达的新型藻酸盐裂解酶(Pet21a-藻酸盐裂解酶)产生的藻酸盐低聚糖在保持荔枝(Litchi chinensis Sonn.)果实采后品质方面的功效。在控制的贮藏条件下,将生成的寡糖应用于广州增城采收的荔枝果实,以评估其对各种质量参数的影响。研究的重点是在设定的相对湿度和温度条件下,测定海藻酸寡糖处理对果实保色性、失水率、硬度和霉菌感染易感性的影响。结果表明,与未经处理的对照组相比,经处理的水果在保色性、失水率、硬度和霉菌感染率方面均有明显改善。
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引用次数: 0
期刊
arXiv - QuanBio - Other Quantitative Biology
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