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Liquid biopsy for early diagnosis of hepatocellular carcinoma: Current state and future perspectives 液体活检在肝细胞癌早期诊断中的应用:现状和未来展望
Pub Date : 2023-04-10 DOI: 10.2174/2210298103666230410105139
Liquid biopsies in cancer have received considerable attention as new biomarkers and subjects of clinical translational research. Liquid biopsy-derived biomarkers, including circulating tumor cells, cell-free nucleic acids, exosomes, tumor-educated platelets, proteins, and metabolites, have shown enormous potential to improve the sensitivity and specificity in early diagnosis of multiple cancer types, including hepatocellular carcinoma (HCC). Several analytes are already used in HCC clinical trials and are currently under investigation with encouraging preliminary results. This article will review the latest studies on liquid biopsy for early diagnosis and screening of HCC and discuss the current advantages and challenges of liquid biopsies in tumor biomarkers and clinical applications. In the future, the validation of large prospective clinical studies, the development of standardized operating procedures, and the integration of other diagnostic tools will open new avenues for applying liquid biopsy in early cancer detection.
作为新的生物标志物和临床转化研究的主题,液体活检在癌症中的应用受到了广泛的关注。液体活检衍生的生物标志物,包括循环肿瘤细胞、无细胞核酸、外泌体、肿瘤诱导血小板、蛋白质和代谢物,已经显示出巨大的潜力,可以提高包括肝细胞癌(HCC)在内的多种癌症类型早期诊断的敏感性和特异性。几种分析物已经用于HCC临床试验,目前正在研究中,初步结果令人鼓舞。本文将综述液体活检在HCC早期诊断和筛查中的最新研究进展,并讨论液体活检在肿瘤生物标志物和临床应用方面的优势和挑战。在未来,大型前瞻性临床研究的验证,标准化操作程序的开发以及其他诊断工具的整合将为液体活检在早期癌症检测中的应用开辟新的途径。
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引用次数: 0
Advances in Two-dimensional (2D) Inorganic Chiral Materials and 2D Organic-inorganic Hybrid Chiral Materials 二维无机手性材料和二维有机-无机杂化手性材料的研究进展
Pub Date : 2023-04-06 DOI: 10.2174/2210298103666230406095730
Wenyan Zhang, Hangmin Guan, Yingfei Hu, Wen Wang, Fei Liu, Xiaoli Yang, Lingyun Hao
Recently, two-dimensional (2D) materials have gained immense attention, as they are promising in various application fields, such as energy storage, thermal management, photodetectors, catalysis, field-effect transistors, and photovoltaic modules. These merits of 2D materials are attributed to their unique structure and properties. Chirality is an intrinsic property of a substance, which means the substance can not overlap with its mirror image. Significant progress has been made in chiral science, for chirality uniquely influences a chiral substance's performance. With the rapid development of chiral science, it became unveiled that chirality not only exists in chiral organic molecules but can also be induced in 2D inorganic materials and 2D organic-inorganic hybrid materials by breaking the chiral symmetry within their framework to form 2D chiral materials. Compared with 2D materials that do not have chirality, these 2D inorganic chiral materials and 2D organic-inorganic hybrid chiral materials exhibit innovative performance due to chiral symmetry breaking. Nevertheless, at present, only a fraction of work is available which comprehensively sums up the progress of these promising 2D chiral materials. Thus, given their high potential, it is urgent to summarize these newly developed 2D chiral materials comprehensively. In the current study, to feature and highlight their major significance, the recent progress of 2D inorganic materials and 2D organic-inorganic hybrid materials from their chemical composition and categories, application potential associated with their unique properties, and present synthesis strategies to fabricate them along with discussion concerning the development challenges and their bright future were reviewed. This review is anticipated to be instructive and provide a high understanding of advanced functional 2D materials with chirality.
近年来,二维(2D)材料在储能、热管理、光电探测器、催化、场效应晶体管和光伏组件等各个应用领域都有很大的应用前景,引起了人们的极大关注。二维材料的这些优点归功于其独特的结构和性能。手性是物质的固有性质,即物质不能与其镜像重叠。手性是影响手性物质性能的唯一因素,因此手性科学取得了重大进展。随着手性科学的迅速发展,人们发现手性不仅存在于手性有机分子中,还可以通过打破二维无机材料和有机-无机杂化材料框架内的手性对称性来诱导形成二维手性材料。与不具有手性的二维材料相比,这些二维无机手性材料和二维有机-无机杂化手性材料由于手性对称性破缺而表现出创新的性能。然而,目前只有一小部分工作可以全面总结这些有前途的二维手性材料的进展。因此,鉴于其巨大的潜力,对这些新开发的二维手性材料进行全面的总结是迫切需要的。本文从二维无机材料和二维有机-无机杂化材料的化学组成和分类、其独特性能的应用潜力、目前的合成策略、发展挑战和光明前景等方面综述了近年来二维无机材料和二维有机-无机杂化材料的研究进展,以突出其重要意义。这一综述有望对具有手性的先进二维功能材料提供指导和高度的理解。
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引用次数: 0
Meet the Honorary Senior Advisor 见见荣誉高级顾问
Pub Date : 2023-04-01 DOI: 10.2174/221029810302230222162146
Ya-qiu Jin
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引用次数: 0
Landslip Warning System in Hong Kong - Over 40 Years of Evolution 香港山泥倾泻警告系统-超过40年的演变
Pub Date : 2023-04-01 DOI: 10.2174/2210298102666220607152443
Philip Wk Chung, Sunny Tc So, Edward Kh Chu
Background: Hong Kong is situated on the coast of the south-eastern tip of China. A sub-tropical climate brings this coastal city a rainy season from April to October each year. Rainfall intensities as high as 50 mm to 100 mm per hour and 250 mm to 350 mm in 24 hours are not uncommon. With the hilly terrain and densely populated development, Hong Kong is susceptible to land-sliding during heavy rainstorms. Concerted efforts have been made by the Geotechnical Engineering Office (GEO) of the Hong Kong Special Administrative Region Government, to operate and enhance a territory-wide Landslip Warning System continuously, as a major component of landslide risk management tools in Hong Kong, since its establishment in 1977. Forewarning the public of possible landslide risks due to heavy rainstorms and triggering an emergency system within the government to deal with landslide incidents are the major objectives of the Landslip Warning System. This paper presents the development and enhancement of the comprehensive people-centred early warning system for landslides in Hong Kong, based on a framework of an early warning system with four major elements, including risk knowledge, monitoring and warning services, communication and dissemination, and response capability. Methods: With good quality landslide, rainfall and slope databases, landslide prediction models have been developed and continuously updated using statistical means to assess the severity of landslides based on real-time rainfall and rainfall forecast. For the purpose of an effective and robust operation of the Landslip Warning System, the latest Internet of Things (IoT) and cloud computing technologies have been deployed to operate the GEO Rainguage System collecting, transmitting and processing real-time rainfall data over the territory of Hong Kong, and to enhance system redundancy and resilience for data analysis and information dissemination. Results: To have an effective communication and dissemination of the Landslip Warning information to the community, various public education activities have been carried out regularly to promote public awareness of landslide risks and promote personal precautionary measures during heavy rainstorms. Conclusion: Well-established procedures for the operation of the Landslip Warning System have been developed to trigger the internal emergency mechanism within the government to deal with the landslide danger, with the support of innovative solutions to enhance the capability and efficiency of emergency responses.
背景:香港位于中国东南端的海岸。亚热带气候给这个沿海城市带来了每年4月到10月的雨季。每小时雨量高达50毫米至100毫米,24小时雨量高达250毫米至350毫米,实属罕见。香港地势多山,人口密集,在暴雨期间容易发生滑坡。香港特别行政区政府土力工程处自一九七七年设立全港山泥倾泻预警系统以来,一直致力运作和加强该系统,作为本港山泥倾泻风险管理的主要工具。“山泥倾泻警告系统”的主要目的,是提醒市民在暴雨天气下可能出现山泥倾泻的危险,并在政府内部启动紧急系统,以处理山泥倾泻事故。本文介绍如何发展和加强香港以人为本的全面山泥倾泻预警系统。该预警系统的架构包括四个主要元素,包括风险知识、监测和预警服务、沟通和传播,以及应变能力。方法:利用优质的滑坡、降雨和边坡数据库,利用统计手段建立并不断更新滑坡预测模型,以实时降雨和降雨预报为基础,对滑坡的严重程度进行评估。为使山泥倾泻警告系统能有效及稳健地运作,我们采用最新的物联网及云端计算技术来运作地球地质卫星雨量系统,收集、传送及处理香港境内的实时雨量资料,并加强系统的冗余及应变能力,以便进行数据分析及发布资料。结果:为了有效地向市民传达山泥倾泻警告信息,我们定期举办各种公众教育活动,以提高市民对山泥倾泻风险的认识,并鼓励市民在暴雨期间采取个人预防措施。结论:政府已制定完善的山泥倾泻预警系统运作程序,以触发政府内部的应急机制,以应对山泥倾泻危险,并提供创新的解决方案,以提高紧急应变的能力和效率。
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引用次数: 0
Pre-clinical and Clinical evidence associated with infertility in Men: Future aspects 与男性不孕症相关的临床前和临床证据:未来方面
Pub Date : 2023-03-09 DOI: 10.2174/2210298103666230309150002
Ankul Singh S, Mohammad Nezamuddin Khan, Anusruthi Mallela, M. Nishanthi, Lakshmi Chandran
Infertility in men is more than 50% of cases and the real cause of infertility cannot be determined by various factors and lack of technology. Infertility in males is a rising health concern across the globe affecting around 7 percent of the total male population in the world. Various risk factors are associated with several diseases’ outcomes and those involved have been shown to cause Infertility with male background due to their prone habits. Assisted Reproductive Technology (ART) has evolved so far as treatment options for Infertility by manipulating sperm or egg for a woman to conceive being the only hope of bearing a biological child. Ancient medical techniques could be enhanced using augmented reality with additional metrics to include orientation, 3D location of speculations, and proximity to adjacent structures. With image-guided surgery, the need to integrate medical imaging with surgery has promoted the research for new visualization modalities based on AR, as surgical guidance or tool for surgical planning/ diagnosis. Moreover, AR has its advantage in high-quality data curation which establishes the fact that both AI and AR can be associated together and make it useful in the imaging of Infertile Men. At present, research focuses on improving sperm retrieval and assisted conception methods and perhaps in the future less invasive procedures like AI and AR may be an option that provide Insight into data curation and enhanced intelligence in the Imaging of cells.
男性不育症占50%以上,由于各种因素和技术的缺乏,无法确定不育症的真正原因。在全球范围内,男性不育是一个日益严重的健康问题,影响着全球约7%的男性人口。各种风险因素与几种疾病的结果有关,这些因素已被证明会导致男性背景的不育症,因为他们有倾向的习惯。迄今为止,辅助生殖技术(ART)已经发展成为一种治疗不孕症的选择,通过操纵精子或卵子,让女性怀孕,这是生育孩子的唯一希望。古代的医疗技术可以通过增强现实技术来增强,增加额外的度量,包括方向、推测的3D位置和邻近结构的接近程度。随着图像引导手术的出现,医学成像与手术相结合的需求推动了基于AR的新型可视化模式的研究,作为手术指导或手术计划/诊断的工具。此外,增强现实在高质量的数据管理方面有其优势,这表明人工智能和增强现实可以结合在一起,并使其在不育男性的成像中发挥作用。目前,研究的重点是改进精子提取和辅助受孕方法,也许在未来,人工智能和增强现实等侵入性较小的程序可能会成为一种选择,为细胞成像提供数据管理和增强智能的见解。
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引用次数: 0
Optimization of Single Screw Extrusion Processing Variables and Soy and Rice Flour Blend Formulations Based on Physical Properties of Extrudates 基于挤出物性的单螺杆挤出工艺参数及豆米粉混合配方优化
Pub Date : 2023-02-03 DOI: 10.2174/2210298103666230203121700
P. Mitra, Srikanth Manohar Pakki, Binu Acharya, Sagar Khanvilkar
Extruded cereals and snacks are mainly carbohydrates. Most adults require more protein above RDA by restricting carbohydrates for many health benefits. A wide variety of soy protein-rich extrudates can be produced by blending with rice flour. However, optimum extrusion processing variables (i.e., screw speed, die temperature, and product formulations) are required for maximum retention of nutrients with desired product characteristics.The objective of this study was to optimize the extrusion operating conditions and soy flour and rice flour blend formulations for developing protein-rich cereal-like extrudates.Twenty formulations using CCRD with the combinations of soy flour content (43-77%), die temperature (123-157℃), and screw speed (250-350 rpm) were extruded using a single screw extruder. The physical properties (expansion ratio, density, porosity, hardness, crispness, color, and water solubility index) of extrudates were determined. The regression models and 3-dimensional response surface models were developed for each property of extrudates using RSM. Numerical and graphical optimizations were conducted based on the desirability to determine an optimum condition.The regression models were able to predict the physical properties of extrudates with an accuracy of 75-90%, depending on their properties. The 3-dimensional response surface models indicated that the soy flour content, die temperature, and screw speed affected the physical properties of extrudates significantly (p<0.05). Soy flour content (50-55%), die temperature (140-145℃), and screw speed (290-320 rpm) were very effective for the desired quality of soy flour and rice flour blend extrudates.The regression models were able to predict the physical properties of extrudates with an accuracy of 75-90The optimum condition is expected to be very useful for soy protein and rice flour blend extruded cereal-like product development commercially within the experimental range.The optimum condition is expected to be very useful for soy protein and rice flour blend extruded cereal-like product development commercially within the experimental range.
挤压谷物和零食主要是碳水化合物。大多数成年人需要更多的蛋白质高于RDA,通过限制碳水化合物来获得许多健康益处。通过与米粉混合,可以生产出各种富含大豆蛋白的挤出物。然而,最佳的挤出加工变量(即,螺杆速度,模具温度和产品配方)需要最大限度地保留所需产品特性的营养成分。本研究的目的是优化挤出工艺条件和豆粉与米粉的混合配方,以制备富含蛋白质的类谷类挤出物。在单螺杆挤出机上,用CCRD在豆粉含量(43 ~ 77%)、模具温度(123 ~ 157℃)和螺杆转速(250 ~ 350 rpm)的组合下挤出20个配方。测定了挤出物的物理性能(膨胀率、密度、孔隙率、硬度、脆度、颜色、水溶性指数)。利用RSM方法建立了挤出物各项性能的回归模型和三维响应面模型。在确定最优条件的基础上,进行了数值和图形优化。回归模型能够预测挤出物的物理性质,准确度为75-90%,具体取决于它们的性质。三维响应面模型表明,豆粉含量、模具温度和螺杆转速对挤出物的物理性能有显著影响(p<0.05)。豆粉含量(50-55%)、模具温度(140-145℃)和螺杆转速(290-320转/分)对豆粉和米粉混合挤出物的理想质量非常有效。该回归模型对挤出物性的预测精度在75 ~ 90之间,期望在实验范围内为大豆蛋白与米粉混合挤出类谷物产品的商业化开发提供有益的条件。该最佳工艺条件可为实验范围内大豆蛋白与米粉混合膨化类谷物产品的商业化开发提供参考。
{"title":"Optimization of Single Screw Extrusion Processing Variables and Soy and Rice Flour Blend Formulations Based on Physical Properties of Extrudates","authors":"P. Mitra, Srikanth Manohar Pakki, Binu Acharya, Sagar Khanvilkar","doi":"10.2174/2210298103666230203121700","DOIUrl":"https://doi.org/10.2174/2210298103666230203121700","url":null,"abstract":"\u0000\u0000Extruded cereals and snacks are mainly carbohydrates. Most adults require more protein above RDA by restricting carbohydrates for many health benefits. A wide variety of soy protein-rich extrudates can be produced by blending with rice flour. However, optimum extrusion processing variables (i.e., screw speed, die temperature, and product formulations) are required for maximum retention of nutrients with desired product characteristics.\u0000\u0000\u0000\u0000The objective of this study was to optimize the extrusion operating conditions and soy flour and rice flour blend formulations for developing protein-rich cereal-like extrudates.\u0000\u0000\u0000\u0000Twenty formulations using CCRD with the combinations of soy flour content (43-77%), die temperature (123-157℃), and screw speed (250-350 rpm) were extruded using a single screw extruder. The physical properties (expansion ratio, density, porosity, hardness, crispness, color, and water solubility index) of extrudates were determined. The regression models and 3-dimensional response surface models were developed for each property of extrudates using RSM. Numerical and graphical optimizations were conducted based on the desirability to determine an optimum condition.\u0000\u0000\u0000\u0000The regression models were able to predict the physical properties of extrudates with an accuracy of 75-90%, depending on their properties. The 3-dimensional response surface models indicated that the soy flour content, die temperature, and screw speed affected the physical properties of extrudates significantly (p<0.05). Soy flour content (50-55%), die temperature (140-145℃), and screw speed (290-320 rpm) were very effective for the desired quality of soy flour and rice flour blend extrudates.\u0000\u0000\u0000\u0000The regression models were able to predict the physical properties of extrudates with an accuracy of 75-90\u0000\u0000\u0000\u0000The optimum condition is expected to be very useful for soy protein and rice flour blend extruded cereal-like product development commercially within the experimental range.\u0000\u0000\u0000\u0000The optimum condition is expected to be very useful for soy protein and rice flour blend extruded cereal-like product development commercially within the experimental range.\u0000","PeriodicalId":184819,"journal":{"name":"Current Chinese Science","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126132862","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
Meet the Honorary Senior Advisor 见见荣誉高级顾问
Pub Date : 2023-02-01 DOI: 10.2174/221029810301221209103815
Atta ur-Rahman
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引用次数: 0
Meet the Honorary Senior Advisor 会见名誉高级顾问
Pub Date : 2023-02-01 DOI: 10.2174/221029810301221209104333
Ben Zhong Tang
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引用次数: 0
Microwave Assisted Aza-Michael Additions Towards β-Amino Acids 微波辅助Aza-Michael对β-氨基酸的加成
Pub Date : 2023-01-20 DOI: 10.2174/2210298103666230120114302
Matziari Magdalini, Fan Yinqi
β-amino acids are non-natural amino acids, where the amino group is attached to the β-carbon instead of the α-carbon. Peptides containing β-amino acids present with particular secondary structures and remarkable chemical and biological properties. β-peptides are used as peptidomimetics, based on the resistance to hydrolysis in vivo, with various important applications in the field of Medicine.Several synthetic methods have appeared in recent years, with the Aza- Michael conjugate addition reactions, being a very effective approach towards β-amino acids. Microwave irradiation mediated reactions have also attracted much interest since they significantly improve the reaction yields while reducing the reaction time and avoiding by-products formation. The aim of this project has been the development of a reliable and general synthetic methodology towards β2 and β3 amino acids with the use of conjugate additions of N-nucleophiles to substituted acrylate derivatives. The application of effective catalysts has been also examined here.The results show that the acrylate precursors of β2 and β3 amino acids with side chains corresponding to Phe, Asp, Ile, Leu, Val, and Tyr have been synthesized successfully by using a one-pot Horner-Wadsworth-Emmons reaction, and they have been used for the addition of N-nucleophiles, with a study on conditions and yields optimization.With the main challenge for β-amino acid synthesis being that there is still no general method to synthesize different types of β-amino acids corresponding to all-natural α-amino acids, the proposed synthetic methodology may offer this possibility.N/A
β-氨基酸是非天然氨基酸,其中氨基连接在β-碳上而不是α-碳上。含有β-氨基酸的肽具有特殊的二级结构和显著的化学生物学特性。β-肽是基于其在体内抗水解的特性而被用作拟肽物,在医学领域有各种重要的应用。近年来出现了几种合成β-氨基酸的方法,其中Aza- Michael共轭加成反应是合成β-氨基酸的有效途径。微波辐射介导的反应也引起了人们的极大兴趣,因为它们显著提高了反应收率,同时减少了反应时间,避免了副产物的形成。该项目的目的是开发一种可靠和通用的合成方法,利用n -亲核试剂共轭添加到取代的丙烯酸酯衍生物上,合成β2和β3氨基酸。本文还探讨了有效催化剂的应用。结果表明,通过一锅反应成功合成了侧链分别为Phe、Asp、Ile、Leu、Val和Tyr的β2和β3氨基酸的丙烯酸酯前体,并将其用于n -亲核试剂的加成,并对加成条件和产率进行了优化研究。β-氨基酸合成面临的主要挑战是目前还没有一种通用的方法来合成与全天然α-氨基酸相对应的不同类型的β-氨基酸,本文提出的合成方法可能提供这种可能性。N/A
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引用次数: 0
Efficacious Restoration of Intractable Trauma by Administration of Mesenchymal Stem/Stromal Cells and Hydrogel Composite: A Case Series 间充质干细胞/基质细胞和水凝胶复合材料对顽固性创伤的有效修复:一个病例系列
Pub Date : 2022-12-28 DOI: 10.2174/2210298103666221228143135
Leisheng Zhang, Zhongchao Han
Patients with intractable cutaneous injuries and complications such as severe ulcers and dysfunctions often result in unfavorable prognosis and burdensome possessions esthetically and psychosocially. This study aimed to evaluate the preliminary safety and efficacy outcomes of hyaluronic acid/placenta-derived mesenchymal stem/stromal cells (HA/P-MSCs) composite upon extensive traumas.The phase Ⅰ of the interventional study with four enrolled patients with refractory wounds and ulcerations was conducted. With the consent of the patients and approval of the ethics committee, continuous HA/P-MSC composite administration was conducted on the surface of wounds after surgical debridement. The dynamic changes in pathomorphology and therapeutic response were collectively recorded.All the participants revealed efficacious remission with clinical-grade HA/P-MSC composite, including complete wound healing, elimination of inflammatory exudate and refractory ulcers, and regeneration of damaged tissues under sterile conditions. No untoward effects or recurrence were observed in the cases during treatment and the 24-month’s follow-up visit.Refractory wound management with HA/P-MSC composite was preliminarily safe and effective for the improvement of the outcomes of the patients. These findings provided new references for the treatment of the costliest and incurable diseases associated with cutaneous injuries.
顽固性皮肤损伤和并发症,如严重溃疡和功能障碍的患者往往导致不良的预后和负担的财产美学和心理社会。本研究旨在评估透明质酸/胎盘源性间充质干细胞/基质细胞(HA/P-MSCs)复合材料治疗大面积创伤的初步安全性和有效性。Ⅰ期介入研究纳入了4例难治性伤口和溃疡患者。经患者同意和伦理委员会批准,在手术清创后伤口表面连续给予HA/P-MSC复合给药。集体记录病理形态学和治疗反应的动态变化。所有参与者都显示临床级HA/P-MSC复合材料的有效缓解,包括伤口完全愈合,炎症渗出物和难治性溃疡的消除,以及无菌条件下受损组织的再生。治疗期间及随访24个月,均无不良反应及复发。HA/P-MSC复合材料处理难治性创面对改善患者预后初步安全有效。这些发现为治疗与皮肤损伤相关的最昂贵和无法治愈的疾病提供了新的参考。
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引用次数: 0
期刊
Current Chinese Science
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