Biomedical Microdevices最新文献_第10页

Assessing the manufacturable 32-channel cochlear electrode array: evaluation results for clinical trials 评估可制造的32通道耳蜗电极阵列：临床试验的评估结果。

IF 2.8 4区医学

Biomedical Microdevices Pub Date : 2023-10-23 DOI: 10.1007/s10544-023-00681-z

Gwangjin Choi, Yoonhee Ha, Doo-Hee Kim, Soowon Shin, Junewoo Hyun, Sangwoo Kim, Seung-Ha Oh, Kyou-Sik Min

{"title":"Assessing the manufacturable 32-channel cochlear electrode array: evaluation results for clinical trials","authors":"Gwangjin Choi, Yoonhee Ha, Doo-Hee Kim, Soowon Shin, Junewoo Hyun, Sangwoo Kim, Seung-Ha Oh, Kyou-Sik Min","doi":"10.1007/s10544-023-00681-z","DOIUrl":"10.1007/s10544-023-00681-z","url":null,"abstract":"<div><p>Reliability evaluation results of a manufacturable 32-channel cochlear electrode array are reported in this paper. Applying automated laser micro-machining process and a layer-by-layer silicone deposition scheme, authors developed the manufacturing methods of the electrode array for fine patterning and mass production. The developed electrode array has been verified through the requirements specified by the ISO Standard 14708-7. And the insertion trauma of the electrode array has been evaluated based on human temporal bone studies. According to the specified requirements, the electrode array was assessed through elongation & insulation, flexural, and fatigue tests. In addition, Temporal bone study was performed using eight fresh-frozen cadaver temporal bones with the electrode arrays inserted via the round window. Following soaking in saline condition, the impedances between conducting wires of the electrode array were measured over 100 kΩ (the pass/fail criterion). After each required test, it was shown that the electrode array maintained the electrical continuity and insulation condition. The average insertion angle of the electrode array inside the scala tympani was 399.7°. The human temporal bone studies exhibited atraumatic insertion rate of 60.3% (grade 0 or 1). The reliability of the manufacturable electrode array is successfully verified in mechanical, electrical, and histological aspects. Following the completion of a 32-channel cochlear implant system, the performance and stability of the 32-channel electrode array will be evaluated in clinical trials.</p><h3>Graphical abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":490,"journal":{"name":"Biomedical Microdevices","volume":"25 4","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49688218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of interleukin 6 and its soluble receptor on the diffusion barrier dysfunction of alveolar tissue 白细胞介素6及其可溶性受体在肺泡组织扩散屏障功能障碍中的作用。

IF 2.8 4区医学

Biomedical Microdevices Pub Date : 2023-10-18 DOI: 10.1007/s10544-023-00680-0

Chao Sui, Woo Lee

{"title":"Role of interleukin 6 and its soluble receptor on the diffusion barrier dysfunction of alveolar tissue","authors":"Chao Sui, Woo Lee","doi":"10.1007/s10544-023-00680-0","DOIUrl":"10.1007/s10544-023-00680-0","url":null,"abstract":"<div><p>During respiratory infection, barrier dysfunction in alveolar tissue can result from “cytokine storm” caused by overly reactive immune response. Particularly, interleukin 6 (IL-6) is implicated as a key biomarker of cytokine storm responsible for and further progression to pulmonary edema. In this study, alveolar-like tissue was reconstructed in a microfluidic device with: (1) human microvascular lung endothelial cells (HULEC-5a) cultured under flow-induced shear stress and (2) human epithelial cells (Calu-3) cultured at air–liquid interface. The effects of IL-6 and the soluble form of its receptor (sIL-6R) on the permeability, electrical resistance, and morphology of the endothelial and epithelial layers were evaluated. The diffusion barrier properties of both the endothelial and epithelial layers were significantly degraded only when IL-6 treatment was combined with sIL-6R. As suggested by recent review and clinical studies, our results provide unequivocal evidence that the barrier dysfunction occurs through trans-signaling in which IL-6 and sIL-6R form a complex and then bind to the surface of endothelial and epithelial cells, but not by classical signaling in which IL-6 binds to membrane-expressed IL-6 receptor. This finding suggests that the role of both IL-6 and sIL-6R should be considered as important biomarkers in developing strategies for treating cytokine storm.</p><h3>Graphical Abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":490,"journal":{"name":"Biomedical Microdevices","volume":"25 4","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10544-023-00680-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41231381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Use of high frequency electrorotation to identify cytoplasmic changes in cells non-disruptively 使用高频电旋转来无干扰地识别细胞中的细胞质变化。

IF 2.8 4区医学

Biomedical Microdevices Pub Date : 2023-10-06 DOI: 10.1007/s10544-023-00677-9

Camila D. M. Campos, Kevin T. Uning, Pawel Barmuta, Tomislav Markovic, Rahul Yadav, Giovanni Mangraviti, Ilja Ocket, Willem Van Roy, Liesbet Lagae, Chengxun Liu

{"title":"Use of high frequency electrorotation to identify cytoplasmic changes in cells non-disruptively","authors":"Camila D. M. Campos, Kevin T. Uning, Pawel Barmuta, Tomislav Markovic, Rahul Yadav, Giovanni Mangraviti, Ilja Ocket, Willem Van Roy, Liesbet Lagae, Chengxun Liu","doi":"10.1007/s10544-023-00677-9","DOIUrl":"10.1007/s10544-023-00677-9","url":null,"abstract":"<div><p>In this paper we demonstrate how the use of frequencies ranging from 50 kHz to 5 GHz in the analysis of cells by electrorotation can open the path to the identification of differences not detectable by conventional set-ups. Earlier works usually reported electrorotation devices operating below 20 MHz, limiting the response obtained to properties associated with the cell membrane. Those devices are thus unable to resolve the physiological properties in the cytoplasm. We used microwave-based technology to extend the frequency operation to 5 GHz. At high frequencies (from tens of MHz to GHz), the electromagnetic signal passes through the membrane and allows probing the cytoplasm. This enables several applications, such as cell classification, and viability analysis. Additionally, the use of conventional microfabrication techniques reduces the cost and complexity of analysis, compared to other non-invasive methods. We demonstrated the potential of this set-up by identifying two different populations of T-lymphocytes not distinguishable through visual assessment. We also assessed the effect of calcein on cell cytoplasmic properties and used it as a controlled experiment to demonstrate the possibility of this method to detect changes happening predominantly in the cytoplasm.</p><h3>Graphical Abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":490,"journal":{"name":"Biomedical Microdevices","volume":"25 4","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41099454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A portable point-of-care testing device for forward blood typing with hemophilia diagnosis 一种便携式护理点检测设备，用于血友病诊断的正向血液分型。

IF 2.8 4区医学

Biomedical Microdevices Pub Date : 2023-09-30 DOI: 10.1007/s10544-023-00678-8

Yaw-Jen Chang, Shang-Fen Yeh, Pin-Jyun Chen

{"title":"A portable point-of-care testing device for forward blood typing with hemophilia diagnosis","authors":"Yaw-Jen Chang, Shang-Fen Yeh, Pin-Jyun Chen","doi":"10.1007/s10544-023-00678-8","DOIUrl":"10.1007/s10544-023-00678-8","url":null,"abstract":"<div><p>This paper presents a portable point-of-care testing (POCT) device to conduct simultaneous and on-site tests of ABO and Rh(D) forward blood typing and hemophilia diagnosis using only a small amount of human whole blood sample. The POCT device consisted of a spinning module, a measuring circuit, an interdigitated electrode (IDE) for hemophilia diagnosis, and three disposable microfluidic chips for bioassays with anti-A, anti-B, and anti-D, respectively, and measurement of the concentration of factor VIII. Agglutination will occur if red blood cells (RBCs) are exposed to the corresponding antibody. To evaluate the degree of RBC agglutination, a linear sweep voltage, ranging from − 0.5 to + 0.5 V, was applied to the electrodes of the microfluidic chip and the resulting current was measured. For different levels of agglutination, the measured I–V curves were explicitly discriminated, providing five clinical levels from non-agglutination (level 0) to strong agglutination (level 4). The quantitative norm obtained from cubic fitting function of each I–V curve served as the criterion to represent this agglutination level. The ABO blood type was determined by both agglutination levels of the blood sample reacting with anti-A and anti-B. The degree of agglutination with anti-D gave the Rh(D) type. Moreover, the concentration of factor VIII was detected for the determination of hemophilia. Without requiring expensive equipment, this POCT device is especially suitable for usage in emergency or natural disasters to provide quantitative testing in rescue and relief operations.</p></div>","PeriodicalId":490,"journal":{"name":"Biomedical Microdevices","volume":"25 4","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41100069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid integration of screen-printed electrodes into thermoplastic organ-on-a-chip devices for real-time monitoring of trans-endothelial electrical resistance 将丝网印刷电极快速集成到热塑性芯片上的有机物设备中，用于实时监测跨内皮电阻。

IF 2.8 4区医学

Biomedical Microdevices Pub Date : 2023-09-23 DOI: 10.1007/s10544-023-00669-9

Satoru Kawakita, Shaopei Li, Huu Tuan Nguyen, Surjendu Maity, Reihaneh Haghniaz, Jamal Bahari, Ning Yu, Kalpana Mandal, Praveen Bandaru, Lei Mou, Menekse Ermis, Enam Khalil, Safoora Khosravi, Arne Peirsman, Rohollah Nasiri, Annie Adachi, Aya Nakayama, Remy Bell, Yangzhi Zhu, Vadim Jucaud, Mehmet Remzi Dokmeci, Ali Khademhosseini

{"title":"Rapid integration of screen-printed electrodes into thermoplastic organ-on-a-chip devices for real-time monitoring of trans-endothelial electrical resistance","authors":"Satoru Kawakita, Shaopei Li, Huu Tuan Nguyen, Surjendu Maity, Reihaneh Haghniaz, Jamal Bahari, Ning Yu, Kalpana Mandal, Praveen Bandaru, Lei Mou, Menekse Ermis, Enam Khalil, Safoora Khosravi, Arne Peirsman, Rohollah Nasiri, Annie Adachi, Aya Nakayama, Remy Bell, Yangzhi Zhu, Vadim Jucaud, Mehmet Remzi Dokmeci, Ali Khademhosseini","doi":"10.1007/s10544-023-00669-9","DOIUrl":"10.1007/s10544-023-00669-9","url":null,"abstract":"<div><p>Trans-endothelial electrical resistance (TEER) is one of the most widely used indicators to quantify the barrier integrity of endothelial layers. Over the last decade, the integration of TEER sensors into organ-on-a-chip (OOC) platforms has gained increasing interest for its efficient and effective measurement of TEER in OOCs. To date, microfabricated electrodes or direct insertion of wires has been used to integrate TEER sensors into OOCs, with each method having advantages and disadvantages. In this study, we developed a TEER-SPE chip consisting of carbon-based screen-printed electrodes (SPEs) embedded in a poly(methyl methacrylate) (PMMA)-based multi-layered microfluidic device with a porous poly(ethylene terephthalate) membrane in-between. As proof of concept, we demonstrated the successful cultures of hCMEC/D3 cells and the formation of confluent monolayers in the TEER-SPE chip and obtained TEER measurements for 4 days. Additionally, the TEER-SPE chip could detect changes in the barrier integrity due to shear stress or an inflammatory cytokine (i.e., tumor necrosis factor-α). The novel approach enables a low-cost and facile fabrication of carbon-based SPEs on PMMA substrates and the subsequent assembly of PMMA layers for rapid prototyping. Being cost-effective and cleanroom-free, our method lowers the existing logistical and technical barriers presenting itself as another step forward to the broader adoption of OOCs with TEER measurement capability.</p></div>","PeriodicalId":490,"journal":{"name":"Biomedical Microdevices","volume":"25 4","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41095682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A fully integrated duplex RT-LAMP device for the detection of viral infections 一个完全集成的双工RT-LAMP装置，用于检测病毒感染

IF 2.8 4区医学

Biomedical Microdevices Pub Date : 2023-09-08 DOI: 10.1007/s10544-023-00676-w

Nicolas Mytzka, Skaiste Arbaciauskaite, Natalia Sandetskaya, Kai Mattern, Dirk Kuhlmeier

{"title":"A fully integrated duplex RT-LAMP device for the detection of viral infections","authors":"Nicolas Mytzka, Skaiste Arbaciauskaite, Natalia Sandetskaya, Kai Mattern, Dirk Kuhlmeier","doi":"10.1007/s10544-023-00676-w","DOIUrl":"10.1007/s10544-023-00676-w","url":null,"abstract":"<div><p>Respiratory viruses can cause epidemics or pandemics, which are worldwide outbreaks of disease. The severity of these events varies depending on the virus, its characteristics, along with environmental factors. The frequency of epidemics and pandemics caused by respiratory viruses is difficult to predict, but the potential severity of such events underlines the importance of continued monitoring, research, and preparation for emerging infectious diseases. To help improve pandemic preparedness, we created a fully integrated duplex reverse transcription loop-mediated isothermal amplification (RT-LAMP) device targeting two respiratory viruses, influenza A/X-31 virus and bovine coronavirus, as a replacement for SARS-CoV-2. This device can be adapted to any other respiratory virus. In this study, we showed and evaluated a prototype of a microfluidic system, and showed that duplex RT-LAMP can detect and distinguish between the two viruses, with LoDs of 2,000 copies/ml for bovine coronavirus and 200 copies/ml for influenza A/X-31 virus.</p><h3>Graphical abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":490,"journal":{"name":"Biomedical Microdevices","volume":"25 4","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10544-023-00676-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"6551732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A flexible implant for acute intrapancreatic electrophysiology 一种用于急性胰腺内电生理的柔性植入物。

IF 2.8 4区医学

Biomedical Microdevices Pub Date : 2023-08-30 DOI: 10.1007/s10544-023-00662-2

Domenic Pascual, Lisa Brauns, Ruth Domes, Matthias Tisler, Marco Kögel, Angelika Stumpf, Andreas Kirschniak, Jens Rolinger, Udo Kraushaar, Peter D. Jones

{"title":"A flexible implant for acute intrapancreatic electrophysiology","authors":"Domenic Pascual, Lisa Brauns, Ruth Domes, Matthias Tisler, Marco Kögel, Angelika Stumpf, Andreas Kirschniak, Jens Rolinger, Udo Kraushaar, Peter D. Jones","doi":"10.1007/s10544-023-00662-2","DOIUrl":"10.1007/s10544-023-00662-2","url":null,"abstract":"<div><p>Microelectrode arrays (MEAs) have proven to be a powerful tool to study electrophysiological processes over the last decades with most technology developed for investigation of the heart or brain. Other targets in the field of bioelectronic medicine are the peripheral nervous system and its innervation of various organs. Beyond the heart and nervous systems, the beta cells of the pancreatic islets of Langerhans generate action potentials during the production of insulin. <i>In vitro</i> experiments have demonstrated that their activity is a biomarker for blood glucose levels, suggesting that recording their activity <i>in vivo</i> could support patients suffering from diabetes mellitus with long-term automated read-out of blood glucose concentrations. Here, we present a flexible polymer-based implant having 64 low impedance microelectrodes designed to be implanted to a depth of 10 mm into the pancreas. As a first step, the implant will be used in acute experiments in pigs to explore the electrophysiological processes of the pancreas <i>in vivo</i>. Beyond use in the pancreas, our flexible implant and simple implantation method may also be used in other organs such as the brain.</p></div>","PeriodicalId":490,"journal":{"name":"Biomedical Microdevices","volume":"25 3","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10544-023-00662-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10123442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A 3D printed microfluidic device for scalable multiplexed CRISPR-cas12a biosensing 一种用于可扩展多路复用CRISPR-cas12a生物传感的3D打印微流体设备。

IF 2.8 4区医学

Biomedical Microdevices Pub Date : 2023-08-29 DOI: 10.1007/s10544-023-00675-x

Kathrine Curtin, Jing Wang, Bethany J. Fike, Brandi Binkley, Peng Li

{"title":"A 3D printed microfluidic device for scalable multiplexed CRISPR-cas12a biosensing","authors":"Kathrine Curtin, Jing Wang, Bethany J. Fike, Brandi Binkley, Peng Li","doi":"10.1007/s10544-023-00675-x","DOIUrl":"10.1007/s10544-023-00675-x","url":null,"abstract":"<div><p>Accurate, rapid, and multiplexed nucleic acid detection is critical for environmental and biomedical monitoring. In recent years, CRISPR-Cas12a has shown great potential in improving the performance of DNA biosensing. However, the nonspecific <i>trans</i>-cleavage activity of Cas12a complicates the multiplexing capability of Cas12a biosensing. We report a 3D-printed composable microfluidic plate (cPlate) device that utilizes miniaturized wells and microfluidic loading for a multiplexed CRISPR-Cas12a assay. The device easily combines loop-mediated isothermal amplification (LAMP) and CRISPR-Cas12a readout in a simple and high-throughput workflow with low reagent consumption. To ensure the maximum performance of the device, the concentration of Cas12a and detection probe was optimized, which yielded a four-fold sensitivity improvement. Our device demonstrates sensitive detection to the fg mL<sup>− 1</sup> level for four waterborne pathogens including shigella, campylobacter, cholera, and legionella within 1 h, making it suitable for low-resource settings.</p><h3>Graphical Abstract</h3>\u0000 <div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 </div>","PeriodicalId":490,"journal":{"name":"Biomedical Microdevices","volume":"25 3","pages":""},"PeriodicalIF":2.8,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10175383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Absorbable cyst brushes 可吸收囊肿刷。

IF 2.8 4区医学

Biomedical Microdevices Pub Date : 2023-08-23 DOI: 10.1007/s10544-023-00674-y

Filipe Marques, Wouter van der Wijngaart, Niclas Roxhed

引用次数: 0

Fabrication of an electrospun polycaprolactone substrate for colorimetric bioassays 电纺聚己内酯底物比色生物测定的制备

IF 3 4区医学

Biomedical Microdevices Pub Date : 2023-08-17 DOI: 10.1007/s10544-023-00673-z

Chensong Xu, Gwenaël Bonfante, Jongho Park, Vincent Salles, Beomjoon Kim

{"title":"Fabrication of an electrospun polycaprolactone substrate for colorimetric bioassays","authors":"Chensong Xu, Gwenaël Bonfante, Jongho Park, Vincent Salles, Beomjoon Kim","doi":"10.1007/s10544-023-00673-z","DOIUrl":"10.1007/s10544-023-00673-z","url":null,"abstract":"<div><p>Colorimetric assays rely on detecting colour changes to measure the concentration of target molecules. Paper substrates are commonly used for the detection of biomarkers due to their availability, porous structure, and capillarity. However, the morphological and mechanical properties of paper, such as fibre diameter, pore size, and tensile strength, cannot be easily tuned to meet the specific requirements of colorimetric sensors, including liquid capacity and reagent immobilisation. As an alternative to paper materials, biodegradable polymeric membranes made of electrospun polycaprolactone (PCL) fibres can provide various tunable properties related to fibre diameter and pore size.</p><p>We aimed to obtain a glucose sensor substrate for colorimetric sensing using electrospinning with PCL. A feeding solution was created by mixing PCL/chloroform and 3,3’,5’,5’-tetramethylbenzidine (TMB)/ethanol solutions. This solution was electrospun to fabricate a porous membrane composed of microfibres consist of PCL and TMB. The central area of the membrane was made hydrophilic through air plasma treatment, and it was subsequently functionalized with a solution containing glucose oxidase, horseradish peroxidase, and trehalose.</p><p>The sensing areas were evaluated by measuring colour changes in glucose solutions of varying concentrations. The oxidation reactions of glucose and TMB in sensor substrates were recorded and analysed to establish the correlation between different glucose concentrations and colour changes. For comparison, conventional paper substrates prepared with same parameters were evaluated alongside the electrospun PCL substrates. As a result, better immobilization of reagents and higher sensitivity of glucose were achieved with PCL substrates, indicating their potential usage as a new sensing substrate for bioassays.</p></div>","PeriodicalId":490,"journal":{"name":"Biomedical Microdevices","volume":"26 2","pages":""},"PeriodicalIF":3.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10435419/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10057234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0