Journal of Biological Engineering最新文献

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Identification of histidine kinase inhibitors through screening of natural compounds to combat mastitis caused by Streptococcus agalactiae in dairy cattle. 通过筛选对抗无乳链球菌引起的乳腺炎的天然化合物鉴定组氨酸激酶抑制剂。
IF 5.6 3区 生物学
Journal of Biological Engineering Pub Date : 2023-09-26 DOI: 10.1186/s13036-023-00378-0
Rajesh Kumar Pathak, Jun-Mo Kim
{"title":"Identification of histidine kinase inhibitors through screening of natural compounds to combat mastitis caused by Streptococcus agalactiae in dairy cattle.","authors":"Rajesh Kumar Pathak, Jun-Mo Kim","doi":"10.1186/s13036-023-00378-0","DOIUrl":"10.1186/s13036-023-00378-0","url":null,"abstract":"<p><strong>Background: </strong>Mastitis poses a major threat to dairy farms globally; it results in reduced milk production, increased treatment costs, untimely compromised genetic potential, animal deaths, and economic losses. Streptococcus agalactiae is a highly virulent bacteria that cause mastitis. The administration of antibiotics for the treatment of this infection is not advised due to concerns about the emergence of antibiotic resistance and potential adverse effects on human health. Thus, there is a critical need to identify new therapeutic approaches to combat mastitis. One promising target for the development of antibacterial therapies is the transmembrane histidine kinase of bacteria, which plays a key role in signal transduction pathways, secretion systems, virulence, and antibiotic resistance.</p><p><strong>Results: </strong>In this study, we aimed to identify novel natural compounds that can inhibit transmembrane histidine kinase. To achieve this goal, we conducted a virtual screening of 224,205 natural compounds, selecting the top ten based on their lowest binding energy and favorable protein-ligand interactions. Furthermore, molecular docking of eight selected antibiotics and five histidine kinase inhibitors with transmembrane histidine kinase was performed to evaluate the binding energy with respect to top-screened natural compounds. We also analyzed the ADMET properties of these compounds to assess their drug-likeness. The top two compounds (ZINC000085569031 and ZINC000257435291) and top-screened antibiotics (Tetracycline) that demonstrated a strong binding affinity were subjected to molecular dynamics simulations (100 ns), free energy landscape, and binding free energy calculations using the MM-PBSA method.</p><p><strong>Conclusion: </strong>Our results suggest that the selected natural compounds have the potential to serve as effective inhibitors of transmembrane histidine kinase and can be utilized for the development of novel antibacterial veterinary medicine for mastitis after further validation through clinical studies.</p>","PeriodicalId":15053,"journal":{"name":"Journal of Biological Engineering","volume":"17 1","pages":"59"},"PeriodicalIF":5.6,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10523694/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41136442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Efficient targeting of HIF-1α mediated by YC-1 and PX-12 encapsulated niosomes: potential application in colon cancer therapy. YC-1和PX-12包裹的囊泡体介导的HIF-1α的有效靶向:在结肠癌治疗中的潜在应用。
IF 5.6 3区 生物学
Journal of Biological Engineering Pub Date : 2023-09-25 DOI: 10.1186/s13036-023-00375-3
Azar Bakand, Sevil Vaghefi Moghaddam, Maryam Naseroleslami, Helder André, Neda Mousavi-Niri, Effat Alizadeh
{"title":"Efficient targeting of HIF-1α mediated by YC-1 and PX-12 encapsulated niosomes: potential application in colon cancer therapy.","authors":"Azar Bakand, Sevil Vaghefi Moghaddam, Maryam Naseroleslami, Helder André, Neda Mousavi-Niri, Effat Alizadeh","doi":"10.1186/s13036-023-00375-3","DOIUrl":"10.1186/s13036-023-00375-3","url":null,"abstract":"<p><p>A number of molecular biofactors have been documented in pathogenesis and poor prognosis of colorectal cancer (CRC). Among them, the Hypoxia-Inducible Factor (HIF-1a) is frequently reported to become over-expressed, and its targeting could restrict and control a variety of essential hallmarks of CRC. Niosomes are innovative drug delivery vehicles with the encapsulating capacity for co-loading both hydrophilic and hydrophobic drugs at the same time. Also, they can enhance the local accumulation while minimizing the dose and side effects of drugs. YC-1 and PX-12 are two inhibitors of HIF-1a. The purpose of this work was to synthesize dual-loaded YC-1 and PX-12 niosomes to efficiently target HIF-1α in CRC, HT-29 cells. The niosomes were prepared by the thin-film hydration method, then the niosomal formulation of YC-1 and PX-12 (NIO/PX-YC) was developed and optimized by the central composition method (CCD) using the Box-Behnken design in terms of size, polydispersity index (PDI), entrapment efficiency (EE). Also, they are characterized by DLS, FESEM, and TEM microscopy, as well as FTIR spectroscopy. Additionally, entrapment efficiency, in vitro drug release kinetics, and stability were assessed. Cytotoxicity, apoptosis, and cell cycle studies were performed after the treatment of HT-29 cells with NIO/PX-YC. The expression of HIF-1αat both mRNA and protein levels were studied after NIO/PX-YC treatment. The prepared NIO/PX-YC showed a mean particle size of 185 nm with a zeta potential of about-7.10 mv and a spherical morphology. Also, PX-12 and YC-1 represented the entrapment efficiency of about %78 and %91, respectively, with a sustainable and controllable release. The greater effect of NIO/PX-YC than the free state of PX-YC on the cell survival rate, cell apoptosis, and HIF-1α gene/protein expression were detected (p < 0.05). In conclusion, dual loading of niosomes with YC-1 and PX-12 enhanced the effect of drugs on HIF-1α inhibition, thus boosting their anticancer effects.</p>","PeriodicalId":15053,"journal":{"name":"Journal of Biological Engineering","volume":"17 1","pages":"58"},"PeriodicalIF":5.6,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10521571/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41122034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Light regulation of secondary metabolism in fungi. 真菌次生代谢的轻调控。
IF 5.6 3区 生物学
Journal of Biological Engineering Pub Date : 2023-08-31 DOI: 10.1186/s13036-023-00374-4
Wenbin Yu, Rongqiang Pei, Yufei Zhang, Yayi Tu, Bin He
{"title":"Light regulation of secondary metabolism in fungi.","authors":"Wenbin Yu, Rongqiang Pei, Yufei Zhang, Yayi Tu, Bin He","doi":"10.1186/s13036-023-00374-4","DOIUrl":"10.1186/s13036-023-00374-4","url":null,"abstract":"<p><p>Fungi have evolved unique metabolic regulation mechanisms for adapting to the changing environments. One of the key features of fungal adaptation is the production of secondary metabolites (SMs), which are essential for survival and beneficial to the organism. Many of these SMs are produced in response to the environmental cues, such as light. In all fungal species studied, the Velvet complex transcription factor VeA is a central player of the light regulatory network. In addition to growth and development, the intensity and wavelength of light affects the formation of a broad range of secondary metabolites. Recent studies, mainly on species of the genus Aspergillus, revealed that the dimer of VeA-VelB and LaeA does not only regulate gene expression in response to light, but can also be involved in regulating production of SMs. Furthermore, the complexes have a wide regulatory effect on different types of secondary metabolites. In this review, we discussed the role of light in the regulation of fungal secondary metabolism. In addition, we reviewed the photoreceptors, transcription factors, and signaling pathways that are involved in light-dependent regulation of secondary metabolism. The effects of transcription factors on the production of secondary metabolites, as well as the potential applications of light regulation for the production of pharmaceuticals and other products were discussed. Finally, we provided an overview of the current research in this field and suggested potential areas for future research.</p>","PeriodicalId":15053,"journal":{"name":"Journal of Biological Engineering","volume":"17 1","pages":"57"},"PeriodicalIF":5.6,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10472637/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10517859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent advances in 3D printing of biodegradable metals for orthopaedic applications. 用于骨科应用的生物可降解金属3D打印的最新进展。
IF 5.6 3区 生物学
Journal of Biological Engineering Pub Date : 2023-08-29 DOI: 10.1186/s13036-023-00371-7
Wenqing Liang, Chao Zhou, Hongwei Zhang, Juqin Bai, Bo Jiang, Chanyi Jiang, Wenyi Ming, Hengjian Zhang, Hengguo Long, Xiaogang Huang, Jiayi Zhao
{"title":"Recent advances in 3D printing of biodegradable metals for orthopaedic applications.","authors":"Wenqing Liang, Chao Zhou, Hongwei Zhang, Juqin Bai, Bo Jiang, Chanyi Jiang, Wenyi Ming, Hengjian Zhang, Hengguo Long, Xiaogang Huang, Jiayi Zhao","doi":"10.1186/s13036-023-00371-7","DOIUrl":"10.1186/s13036-023-00371-7","url":null,"abstract":"<p><p>The use of biodegradable polymers for treating bone-related diseases has become a focal point in the field of biomedicine. Recent advancements in material technology have expanded the range of materials suitable for orthopaedic implants. Three-dimensional (3D) printing technology has become prevalent in healthcare, and while organ printing is still in its early stages and faces ethical and technical hurdles, 3D printing is capable of creating 3D structures that are supportive and controllable. The technique has shown promise in fields such as tissue engineering and regenerative medicine, and new innovations in cell and bio-printing and printing materials have expanded its possibilities. In clinical settings, 3D printing of biodegradable metals is mainly used in orthopedics and stomatology. 3D-printed patient-specific osteotomy instruments, orthopedic implants, and dental implants have been approved by the US FDA for clinical use. Metals are often used to provide support for hard tissue and prevent complications. Currently, 70-80% of clinically used implants are made from niobium, tantalum, nitinol, titanium alloys, cobalt-chromium alloys, and stainless steels. However, there has been increasing interest in biodegradable metals such as magnesium, calcium, zinc, and iron, with numerous recent findings. The advantages of 3D printing, such as low manufacturing costs, complex geometry capabilities, and short fabrication periods, have led to widespread adoption in academia and industry. 3D printing of metals with controllable structures represents a cutting-edge technology for developing metallic implants for biomedical applications. This review explores existing biomaterials used in 3D printing-based orthopedics as well as biodegradable metals and their applications in developing metallic medical implants and devices. The challenges and future directions of this technology are also discussed.</p>","PeriodicalId":15053,"journal":{"name":"Journal of Biological Engineering","volume":"17 1","pages":"56"},"PeriodicalIF":5.6,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10466721/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10500355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Optimizing the fabrication of a 3D high-resolution implant for neural stimulation. 优化用于神经刺激的3D高分辨率植入物的制造。
IF 5.6 3区 生物学
Journal of Biological Engineering Pub Date : 2023-08-24 DOI: 10.1186/s13036-023-00370-8
Gal Shpun, Nairouz Farah, Yoav Chemla, Amos Markus, Tamar Azrad Leibovitch, Erel Lasnoy, Doron Gerber, Zeev Zalevsky, Yossi Mandel
{"title":"Optimizing the fabrication of a 3D high-resolution implant for neural stimulation.","authors":"Gal Shpun, Nairouz Farah, Yoav Chemla, Amos Markus, Tamar Azrad Leibovitch, Erel Lasnoy, Doron Gerber, Zeev Zalevsky, Yossi Mandel","doi":"10.1186/s13036-023-00370-8","DOIUrl":"10.1186/s13036-023-00370-8","url":null,"abstract":"<p><strong>Background: </strong>Tissue-integrated micro-electronic devices for neural stimulation hold great potential in restoring the functionality of degenerated organs, specifically, retinal prostheses, which are aimed at vision restoration. The fabrication process of 3D polymer-metal devices with high resolution and a high aspect-ratio (AR) is very complex and faces many challenges that impair its functionality.</p><p><strong>Approach: </strong>Here we describe the optimization of the fabrication process of a bio-functionalized 3D high-resolution 1mm circular subretinal implant composed of SU-8 polymer integrated with dense gold microelectrodes (23μm pitch) passivated with 3D micro-well-like structures (20μm diameter, 3μm resolution). The main challenges were overcome by step-by-step planning and optimization while utilizing a two-step bi-layer lift-off process; bio-functionalization was carried out by N<sub>2</sub> plasma treatment and the addition of a bio-adhesion molecule.</p><p><strong>Main results: </strong>In-vitro and in-vivo investigations, including SEM and FIB cross section examinations, revealed a good structural design, as well as a good long-term integration of the device in the rat sub-retinal space and cell migration into the wells. Moreover, the feasibility of subretinal neural stimulation using the fabricated device was demonstrated in-vitro by electrical activation of rat's retina.</p><p><strong>Conclusions: </strong>The reported process and optimization steps described here in detail can aid in designing and fabricating retinal prosthetic devices or similar neural implants.</p>","PeriodicalId":15053,"journal":{"name":"Journal of Biological Engineering","volume":"17 1","pages":"55"},"PeriodicalIF":5.6,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10463680/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10174274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","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 novel inductively coupled capacitor wireless sensor system for rapid antibiotic susceptibility testing. 一种新型电感耦合电容无线传感器系统,用于快速抗生素敏感性测试。
IF 5.6 3区 生物学
Journal of Biological Engineering Pub Date : 2023-08-18 DOI: 10.1186/s13036-023-00373-5
Yikang Xu, Dacheng Ren
{"title":"A novel inductively coupled capacitor wireless sensor system for rapid antibiotic susceptibility testing.","authors":"Yikang Xu, Dacheng Ren","doi":"10.1186/s13036-023-00373-5","DOIUrl":"10.1186/s13036-023-00373-5","url":null,"abstract":"<p><strong>Background: </strong>The increasing prevalence and severity of antimicrobial resistance (AMR) present a major challenge to our healthcare system. Rapid detection of AMR is essential for lifesaving under emergent conditions such as sepsis. The current gold standard phenotypic antibiotic susceptibility testing (AST) takes more than a day to obtain results. Genotypic ASTs are faster (hours) in detecting the presence of resistance genes but require specific probes/knowledge of each AMR gene and do not provide specific information at the phenotype level. To address this unmet challenge, we developed a new rapid phenotypic AST.</p><p><strong>Result: </strong>We designed a new electrochemical biosensor based on the concept of magnetically coupled LC sensors. The engineered LC sensors can be placed in 96-well plates and communicate the reading remotely with a receiver coil for signal analysis. The sensors were validated by monitoring the growth of Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa in the presence and absence of different antibiotics. Drug-resistant strains were used as controls. Bacterial growth was detected within 30 min after inoculation, allowing rapid determination of antibiotic susceptibility at the phenotype level. The sensor also functions in the presence of host proteins when tested with 2% FBS in growth media.</p><p><strong>Conclusions: </strong>With the compatibility with 96-well plates, this label-free rapid 30-min AST has the potential for low-cost applications with simple integration into the existing workflow in clinical settings.</p>","PeriodicalId":15053,"journal":{"name":"Journal of Biological Engineering","volume":"17 1","pages":"54"},"PeriodicalIF":5.6,"publicationDate":"2023-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10439655/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10048338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cancer-on-chip: a 3D model for the study of the tumor microenvironment. 肿瘤芯片:用于肿瘤微环境研究的三维模型。
IF 5.6 3区 生物学
Journal of Biological Engineering Pub Date : 2023-08-17 DOI: 10.1186/s13036-023-00372-6
Elisa Cauli, Michela Anna Polidoro, Simona Marzorati, Claudio Bernardi, Marco Rasponi, Ana Lleo
{"title":"Cancer-on-chip: a 3D model for the study of the tumor microenvironment.","authors":"Elisa Cauli, Michela Anna Polidoro, Simona Marzorati, Claudio Bernardi, Marco Rasponi, Ana Lleo","doi":"10.1186/s13036-023-00372-6","DOIUrl":"10.1186/s13036-023-00372-6","url":null,"abstract":"<p><p>The approval of anticancer therapeutic strategies is still slowed down by the lack of models able to faithfully reproduce in vivo cancer physiology. On one hand, the conventional in vitro models fail to recapitulate the organ and tissue structures, the fluid flows, and the mechanical stimuli characterizing the human body compartments. On the other hand, in vivo animal models cannot reproduce the typical human tumor microenvironment, essential to study cancer behavior and progression. This study reviews the cancer-on-chips as one of the most promising tools to model and investigate the tumor microenvironment and metastasis. We also described how cancer-on-chip devices have been developed and implemented to study the most common primary cancers and their metastatic sites. Pros and cons of this technology are then discussed highlighting the future challenges to close the gap between the pre-clinical and clinical studies and accelerate the approval of new anticancer therapies in humans.</p>","PeriodicalId":15053,"journal":{"name":"Journal of Biological Engineering","volume":"17 1","pages":"53"},"PeriodicalIF":5.6,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10436436/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10047326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Fluid dynamic design for mitigating undesired cell effects and its application to testis cell response testing to endocrine disruptors. 减轻不希望的细胞效应的流体动力学设计及其在睾丸细胞对内分泌干扰物反应测试中的应用。
IF 5.6 3区 生物学
Journal of Biological Engineering Pub Date : 2023-08-07 DOI: 10.1186/s13036-023-00369-1
Seungjin Lee, Jinseop Ahn, Seok-Man Kim, Daehan Kim, Jiun Yeom, Jeongmok Kim, Joong Yull Park, Buom-Yong Ryu
{"title":"Fluid dynamic design for mitigating undesired cell effects and its application to testis cell response testing to endocrine disruptors.","authors":"Seungjin Lee, Jinseop Ahn, Seok-Man Kim, Daehan Kim, Jiun Yeom, Jeongmok Kim, Joong Yull Park, Buom-Yong Ryu","doi":"10.1186/s13036-023-00369-1","DOIUrl":"10.1186/s13036-023-00369-1","url":null,"abstract":"<p><p>Microfluidic devices have emerged as powerful tools for cell-based experiments, offering a controlled microenvironment that mimic the conditions within the body. Numerous cell experiment studies have successfully utilized microfluidic channels to achieve various new scientific discoveries. However, it has been often overlooked that undesired and unnoticed propagation of cellular molecules in such bio-microfluidic channel systems can have a negative impact on the experimental results. Thus, more careful designing is required to minimize such unwanted issues through deeper understanding and careful control of chemically and physically predominant factors at the microscopic scale. In this paper, we introduce a new approach to improve microfluidic channel design, specifically targeting the mitigation of the aforementioned challenges. To minimize the occurrence of undesired cell positioning upstream from the main test section where a concentration gradient field locates, an additional narrow port structure was devised between the microfluidic upstream channel and each inlet reservoir. This port also functioned as a passive lock that hold the flow at rest via fluid-air surface tension, which facilitated manual movement of the device even when cell attachment was not achieved completely. To demonstrate the practicability of the system, we conducted experiments and diffusion simulations on the effect of endocrine disruptors on germ cells. To this end, a bisphenol-A (BPA) concentration gradient was generated in the main channel of the system at BPA concentrations ranging from 120.8 μM to 79.3 μM, and the proliferation of GC-1 cells in the BPA gradient environment was quantitatively evaluated. The features and concepts of the introduced design is to minimize unexpected and ignored error sources, which will be one of the issues to be considered in the development of microfluidic systems to explore extremely delicate cellular phenomena.</p>","PeriodicalId":15053,"journal":{"name":"Journal of Biological Engineering","volume":"17 1","pages":"51"},"PeriodicalIF":5.6,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10408176/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10319206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tissue poromechanical deformation effects on steam pop likelihood in 3-D radiofrequency cardiac ablation. 三维射频心脏消融中组织孔隙力学变形对蒸汽破裂可能性的影响。
IF 5.6 3区 生物学
Journal of Biological Engineering Pub Date : 2023-08-07 DOI: 10.1186/s13036-023-00365-5
Patcharaporn Wongchadakul, Ashim K Datta, Phadungsak Rattanadecho
{"title":"Tissue poromechanical deformation effects on steam pop likelihood in 3-D radiofrequency cardiac ablation.","authors":"Patcharaporn Wongchadakul, Ashim K Datta, Phadungsak Rattanadecho","doi":"10.1186/s13036-023-00365-5","DOIUrl":"10.1186/s13036-023-00365-5","url":null,"abstract":"<p><p>Radiofrequency Cardiac Ablation (RFCA) is a common procedure that heats cardiac tissue to destroy abnormal signal pathways to eliminate arrhythmias. The complex multiphysics phenomena during this procedure need to be better understood to improve both procedure and device design. A deformable poromechanical model of cardiac tissue was developed that coupled joule heating from the electrode, heat transfer, and blood flow from normal perfusion and thermally driven natural convection, which mimics the real tissue structure more closely and provides more realistic results compared to previous models. The expansion of tissue from temperature rise reduces blood velocity, leading to increased tissue temperature, thus affecting steam pop occurrence. Detailed temperature velocity, and thermal expansion of the tissue provided a comprehensive picture of the process. Poromechanical expansion of the tissue from temperature rise reduces blood velocity, increasing tissue temperature. Tissue properties influence temperatures, with lower porosity increasing the temperatures slightly, due to lower velocities. Deeper electrode insertion raises temperature due to increased current flow. The results demonstrate that a 5% increase in porosity leads to a considerable 10% increase in maximum tissue temperature. These insights should greatly help in avoiding undesirable heating effects that can lead to steam pop and in designing improved electrodes.</p>","PeriodicalId":15053,"journal":{"name":"Journal of Biological Engineering","volume":"17 1","pages":"52"},"PeriodicalIF":5.6,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10408080/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9956190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparative transcriptome findings reveal the neuroinflammatory network and potential biomarkers to early detection of ischemic stroke. 比较转录组研究结果揭示了缺血性中风早期检测的神经炎症网络和潜在的生物标志物。
IF 5.6 3区 生物学
Journal of Biological Engineering Pub Date : 2023-08-02 DOI: 10.1186/s13036-023-00362-8
Jiefeng Luo, Dingzhi Chen, Yujia Mei, Hepeng Li, Biyun Qin, Xiao Lin, Ting Fung Chan, Keng Po Lai, Deyan Kong
{"title":"Comparative transcriptome findings reveal the neuroinflammatory network and potential biomarkers to early detection of ischemic stroke.","authors":"Jiefeng Luo,&nbsp;Dingzhi Chen,&nbsp;Yujia Mei,&nbsp;Hepeng Li,&nbsp;Biyun Qin,&nbsp;Xiao Lin,&nbsp;Ting Fung Chan,&nbsp;Keng Po Lai,&nbsp;Deyan Kong","doi":"10.1186/s13036-023-00362-8","DOIUrl":"https://doi.org/10.1186/s13036-023-00362-8","url":null,"abstract":"<p><strong>Introduction: </strong>Ischemic stroke accounts for 70-80% of all stroke cases, leading to over two million people dying every year. Poor diagnosis and late detection are the major causes of the high death and disability rate.</p><p><strong>Methods: </strong>In the present study, we used the middle cerebral artery occlusion (MCAO) rat model and applied comparative transcriptomic analysis, followed by a systematic advanced bioinformatic analysis, including gene ontology enrichment analysis and Ingenuity Pathway Analysis (IPA). We aimed to identify novel biomarkers for the early detection of ischemic stroke. In addition, we aimed to delineate the molecular mechanisms underlying the development of ischemic stroke, in which we hoped to identify novel therapeutic targets for treating ischemic stroke.</p><p><strong>Results: </strong>In the comparative transcriptomic analysis, we identified 2657 differentially expressed genes (DEGs) in the brain tissue of the MCAO model. The gene enrichment analysis highlighted the importance of these DEGs in oxygen regulation, neural functions, and inflammatory and immune responses. We identified the elevation of angiopoietin-2 and leptin receptor as potential novel biomarkers for early detection of ischemic stroke. Furthermore, the result of IPA suggested targeting the inflammasome pathway, integrin-linked kinase signaling pathway, and Th1 signaling pathway for treating ischemic stroke.</p><p><strong>Conclusion: </strong>The results of the present study provide novel insight into the biomarkers and therapeutic targets as potential treatments of ischemic stroke.</p>","PeriodicalId":15053,"journal":{"name":"Journal of Biological Engineering","volume":"17 1","pages":"50"},"PeriodicalIF":5.6,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10398984/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9935281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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