Journal of biological methods最新文献

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Variations in the fetal bovine serum and glucose concentration in the culture medium impact the viability of glioblastoma cells as evidenced through the modulation of cell cycle and reactive oxygen species: An in vitro study. 一项体外研究表明,培养基中胎牛血清和葡萄糖浓度的变化会影响胶质母细胞瘤细胞的生存能力,这是通过调节细胞周期和活性氧来证明的。
Journal of biological methods Pub Date : 2025-08-28 eCollection Date: 2025-01-01 DOI: 10.14440/jbm2025.0016
Rimshia Naaz, Mahadevaswamy G Kuruburu, Zonunsiami Leihang, Venugopal R Bovilla, Rajalakshmi Rajashetty, Ramya C Madhusetty, Vijaya Y Vaagesh, SubbaRao V Madhunapantula
{"title":"Variations in the fetal bovine serum and glucose concentration in the culture medium impact the viability of glioblastoma cells as evidenced through the modulation of cell cycle and reactive oxygen species: An <i>in vitro</i> study.","authors":"Rimshia Naaz, Mahadevaswamy G Kuruburu, Zonunsiami Leihang, Venugopal R Bovilla, Rajalakshmi Rajashetty, Ramya C Madhusetty, Vijaya Y Vaagesh, SubbaRao V Madhunapantula","doi":"10.14440/jbm2025.0016","DOIUrl":"10.14440/jbm2025.0016","url":null,"abstract":"<p><strong>Background: </strong><i>In vitro</i> cell culture is essential for elucidating various signaling mechanisms and screening pharmacological agents to assess their safety and efficacy. However, cell proliferation and survival in culture can be significantly influenced by variations in the composition of the culture medium. For instance, variations in glucose and fetal bovine serum (FBS) concentrations can impact cell viability. Despite this, only a few studies have examined the impact of varied FBS and glucose concentrations in culture media on cell viability.</p><p><strong>Objective: </strong>This study investigated the mechanisms and cellular effects of glucose and FBS deprivation in glioblastoma cell lines.</p><p><strong>Methods: </strong>We systematically evaluated the impact of FBS and glucose deprivation on the proliferation and survival of rat C6 and human U-87 MG glioblastoma cell lines.</p><p><strong>Results: </strong>Glucose deprivation (0 mg/dL) significantly reduced the viability of C6 cells and moderately lowered the viability of U-87 MG cells, with partial recovery upon glucose supplementation (100 mg/dL, 400 mg/dL). Notably, FBS deprivation (0%) exerted a more profound effect, inducing the accumulation of reactive oxygen species and extensive cell death in both cell lines. Restoration of FBS (1, 2, 4, 6, 8, and 10%) recovered cell viability and reduced oxidative stress. Furthermore, both glucose and FBS deprivation altered antioxidant enzyme expression and mitochondrial function. Glucose and FBS deprivation also differentially affected protein kinase B phosphorylation, suggesting metabolic stress-induced signaling modulation.</p><p><strong>Conclusion: </strong>These findings highlight the differential responses of glioblastoma cells to glucose and FBS deprivation and underscore the importance of standardizing culture conditions, especially serum and glucose levels, when designing experiments involving glioblastoma cells.</p>","PeriodicalId":73618,"journal":{"name":"Journal of biological methods","volume":"12 3","pages":"e99010071"},"PeriodicalIF":0.0,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12422119/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145042470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Shifts in clinical practice and patient demographics following the introduction of holmium laser enucleation for benign prostatic hyperplasia in a general urology clinic. 在普通泌尿外科诊所引入钬激光去核治疗良性前列腺增生后临床实践和患者人口统计学的变化。
Journal of biological methods Pub Date : 2025-08-20 eCollection Date: 2025-01-01 DOI: 10.14440/jbm.2025.0002
Ankur U Choksi, Shayan Smani, Soum D Lokeshwar, Vinaik M Sundaresan, Christopher S Hayden, Daniel A Segal, Daniel S Kellner
{"title":"Shifts in clinical practice and patient demographics following the introduction of holmium laser enucleation for benign prostatic hyperplasia in a general urology clinic.","authors":"Ankur U Choksi, Shayan Smani, Soum D Lokeshwar, Vinaik M Sundaresan, Christopher S Hayden, Daniel A Segal, Daniel S Kellner","doi":"10.14440/jbm.2025.0002","DOIUrl":"10.14440/jbm.2025.0002","url":null,"abstract":"<p><strong>Background: </strong>Holmium laser enucleation of the prostate (HoLEP) has emerged as an effective surgical treatment for benign prostatic hyperplasia (BPH). This study evaluated how the adoption of HoLEP in a general urology clinic influenced clinical and procedural volume.</p><p><strong>Objective: </strong>To better understand the practice ramifications of HoLEP adoption, we analyzed the changes to a general urologist's patient demographics and practice patterns after the addition of HoLEP to their surgical repertoire.</p><p><strong>Methods: </strong>We retrospectively reviewed the electronic health records 30 months before and after the introduction of HoLEP to examine changes in a general urologist's patient population. Pearson's Chi-squared test and Student's <i>t</i>-test were used for statistical analysis.</p><p><strong>Results: </strong>A total of 4390 unique patients were seen over a period of 5-years, with 2052 seen before and 2338 after the introduction of HoLEP. The mean distance from patients' residence zip codes to the treatment center remained statistically unchanged (pre-HoLEP: 32.52 ± 152.42 miles, post-HoLEP: 29.65 ± 141.79 miles, <i>p</i>=0.9896). Among those who underwent HoLEP, prostate sizes were comparable between patients residing in the same county and those coming from different counties (96.42 ± 3.24 cc vs. 104.52 ± 4.34 cc, <i>p</i>=0.141). Surgical volume rose from 355 to 1018 cases with a concordant increase in other BPH-related surgeries, marked by an inflection point at the time of HoLEP's introduction.</p><p><strong>Conclusion: </strong>There was an increase in clinical and surgical volume to an established general urologist's practice after HoLEP was offered. Most patients continued to be drawn from the initial catchment area, potentially reflecting previously unmet treatment needs for patients with large prostate glands.</p>","PeriodicalId":73618,"journal":{"name":"Journal of biological methods","volume":"12 3","pages":"e99010069"},"PeriodicalIF":0.0,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12422107/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145042499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of microstructural symmetry in regional zones of human multi-rooted teeth using optical, electrical, and ion diffusion methods. 利用光学、电学和离子扩散方法研究人类多根牙局部区域的显微结构对称性。
Journal of biological methods Pub Date : 2025-08-15 eCollection Date: 2025-01-01 DOI: 10.14440/jbm.2024.0122
Vladimir Mikhailovich Zolotarev
{"title":"Investigation of microstructural symmetry in regional zones of human multi-rooted teeth using optical, electrical, and ion diffusion methods.","authors":"Vladimir Mikhailovich Zolotarev","doi":"10.14440/jbm.2024.0122","DOIUrl":"10.14440/jbm.2024.0122","url":null,"abstract":"<p><strong>Background: </strong>Dentin is a mineralized tissue characterized by a complex network of dentinal tubules, whose arrangement significantly influences the mechanical and physiological properties of teeth.</p><p><strong>Objective: </strong>This study investigated the influence of the microstructural symmetry of dentinal tubules in two orthogonal sections of the crown of human molar and premolar teeth.</p><p><strong>Methods: </strong>The effect of symmetry on the microstructure of dentin sections was studied for two orthogonal sections of the human molar and premolar crown. The symmetry of local zones of tooth sections was first examined using a set of methods: optical, electrical, and ion-diffusion techniques. The methods used have different resolutions and display both the general properties of the dentin structure and the properties that are specifically revealed by an individual method. It is shown that dentinal tubules originate from the center of the cusps of both molars and premolars, forming S-shaped fiber bundles presenting an axial-radial symmetry.</p><p><strong>Results: </strong>The dentinal tubules were shown to originate from the center of the cusps in both molar and premolar teeth, forming S-shaped fiber bundles with axial-radial symmetry. These bundles were arranged along axes, extending from the pulp toward the centers of the cusps of the tooth crown. Within these zones, distinct optical patterns resembling conoscopic figures in the form of a \"Maltese cross\" were observed. This indicates a highly ordered architecture composed of optically anisotropic uniaxial tubules. The optical data were correlated well with findings obtained by electrometric and ion diffusion methods, including dentinal tubule staining.</p><p><strong>Conclusion: </strong>The polarization optical is a valuable tool for studying various regional organizations of dentinal tubules in dentin.</p>","PeriodicalId":73618,"journal":{"name":"Journal of biological methods","volume":"12 3","pages":"e99010067"},"PeriodicalIF":0.0,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12422113/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145042447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 customized large single-piece bifrontal implant for post-craniectomy defect reconstruction: A case study. 定制大单片双额种植体用于颅骨切除术后缺损重建:一个案例研究。
Journal of biological methods Pub Date : 2025-08-12 eCollection Date: 2025-01-01 DOI: 10.14440/jbm.0019
Omid Ghaderzadeh, Ehsan Amirbeyk, Seyed Roholah Ghodsi, Zahra Namazi, Lobat Tayebi
{"title":"A customized large single-piece bifrontal implant for post-craniectomy defect reconstruction: A case study.","authors":"Omid Ghaderzadeh, Ehsan Amirbeyk, Seyed Roholah Ghodsi, Zahra Namazi, Lobat Tayebi","doi":"10.14440/jbm.0019","DOIUrl":"10.14440/jbm.0019","url":null,"abstract":"<p><strong>Background: </strong>Large bifrontal defects pose unique reconstruction challenges due to their complex curvature and mechanical requirements. This case demonstrated how computer-aided design/manufacturing (CAD/CAM) enabled precise single-piece polymethyl methacrylate (PMMA) implant fabrication, thereby overcoming traditional limitations.</p><p><strong>Case presentation: </strong>A 25-year-old male who had undergone bifrontal decompressive craniectomy suffered a severe traumatic brain injury. The autologous bone flap had been temporarily stored in a subcutaneous fat area of the abdomen for 3 months to preserve its viability. A secondary cranioplasty was then performed using titanium miniplates and self-tapping screws for final fixation. After 2 years, the patient developed empyema and a brain abscess; the infected bone flap was removed. A skull computed tomography (CT) scan was conducted, and a prosthesis was created from PMMA by employing CAD. In the sagittal plane, the defect extended from the frontal bone and surpassed the coronal suture, while in the coronal plane, it reached the temporal region on both sides. The prosthesis was fabricated through rapid prototyping based on CT scan images. Surgery was performed using a patient-specific prosthesis that adequately covered the defect area. Facial aesthetics were restored, and no complications occurred. The patient was followed clinically and radiologically for 1 year, during which no postoperative complications or signs of implant-related issues were observed.</p><p><strong>Conclusion: </strong>This CAD/CAM single-piece PMMA implant successfully restored large bifrontal defects, suggesting that it may find broader applications in complex cranioplasties and could achieve improved outcomes.</p>","PeriodicalId":73618,"journal":{"name":"Journal of biological methods","volume":"12 3","pages":"e99010070"},"PeriodicalIF":0.0,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12422115/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145042425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Differential diagnosis of Hashimoto's thyroiditis: The importance of pathological anatomy. 桥本甲状腺炎的鉴别诊断:病理解剖的重要性。
Journal of biological methods Pub Date : 2025-08-07 eCollection Date: 2025-01-01 DOI: 10.14440/jbm.2024.0139
Hernando Vargas-Uricoechea, Ivonne Meza-Cabrera, Alejandro Castellanos-Pinedo, Karen Urrego-Noguera, María V Pinzón-Fernández
{"title":"Differential diagnosis of Hashimoto's thyroiditis: The importance of pathological anatomy.","authors":"Hernando Vargas-Uricoechea, Ivonne Meza-Cabrera, Alejandro Castellanos-Pinedo, Karen Urrego-Noguera, María V Pinzón-Fernández","doi":"10.14440/jbm.2024.0139","DOIUrl":"10.14440/jbm.2024.0139","url":null,"abstract":"<p><strong>Background: </strong>Hashimoto's thyroiditis (HT) represents a complex, multifactorial autoimmune disease characterized by a broad spectrum of clinical and imaging presentations. These manifestations tend to be clinically perplexing, necessitating additional tests. In cases where a malignancy is suspected or obstructive symptoms are present, surgical management may be required. Histopathologically, HT is hallmarked by significant lymphocytic infiltration of the thyroid gland, typically with prominent germinal centers, small lymphocytes, centrocytes, centroblasts, plasma cells, and occasionally immunoblasts. The degree of fibrosis varies, giving the gland a lobulated appearance and, in some cases, resulting in a fibrous variant, which, biochemically, is usually accompanied by hypothyroidism.</p><p><strong>Objective: </strong>This review provided a diagnostic and differential approach to HT, highlighting the utility of histopathological examination.</p><p><strong>Conclusion: </strong>Histopathological analysis helps broaden the diagnostic and therapeutic horizon in individuals with HT.</p>","PeriodicalId":73618,"journal":{"name":"Journal of biological methods","volume":"12 3","pages":"e99010064"},"PeriodicalIF":0.0,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12422120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145042436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An experimental workflow for investigating anoikis resistance in cancer metastasis. 研究anoikis在肿瘤转移中的耐药性的实验流程。
Journal of biological methods Pub Date : 2025-08-05 eCollection Date: 2025-01-01 DOI: 10.14440/jbm.2024.0140
Xue Han, Yipan Zheng, Xiaohui Si, Zhe Liu
{"title":"An experimental workflow for investigating anoikis resistance in cancer metastasis.","authors":"Xue Han, Yipan Zheng, Xiaohui Si, Zhe Liu","doi":"10.14440/jbm.2024.0140","DOIUrl":"10.14440/jbm.2024.0140","url":null,"abstract":"<p><strong>Background: </strong>Anoikis is a form of programmed cell death triggered by the detachment of cells from the extracellular matrix. Anoikis resistance represents a critical factor in tumor metastasis, and elucidating the mechanisms by which epithelial cancer cells evade this process may provide a molecular insight for effectively targeting metastatic progression.</p><p><strong>Methods: </strong>Presented here are an experimental workflow and a detailed protocol to examine anoikis sensitivity in tumor cells both <i>in vitro</i> and <i>in vivo</i>. We described a detachment-induced anoikis model, a three-dimensional spheroid culture system, and an <i>in vivo</i> circulating tumor cell assay, by using the human lung carcinoma cell line A549 as a model system. We detailed the cell culture conditions, materials, and sample preparation, and the evaluation and quantification of anoikis. Together, these methods provide a comprehensive approach for investigating anoikis resistance.</p><p><strong>Conclusion: </strong>This protocol offers valuable insights into the mechanisms underlying anoikis resistance and may facilitate the identification of novel therapeutic targets for cancer treatment.</p>","PeriodicalId":73618,"journal":{"name":"Journal of biological methods","volume":"12 3","pages":"e99010066"},"PeriodicalIF":0.0,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12422110/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145042444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recovery pulse rate and cardiovascular function indices in young female adults following orthostasis. 年轻女性成人直立后恢复脉搏率及心血管功能指标。
Journal of biological methods Pub Date : 2025-08-01 eCollection Date: 2025-01-01 DOI: 10.14440/jbm.2024.0127
Mayowa Jeremiah Adeniyi, Ayoola Awosika
{"title":"Recovery pulse rate and cardiovascular function indices in young female adults following orthostasis.","authors":"Mayowa Jeremiah Adeniyi, Ayoola Awosika","doi":"10.14440/jbm.2024.0127","DOIUrl":"10.14440/jbm.2024.0127","url":null,"abstract":"<p><strong>Background: </strong>Recovery pulse rate (RPR) and other cardiovascular indices - such as heart rate variability and blood pressure recovery - are underutilized tools in assessing autonomic and cardiovascular adaptability to orthostasis. While orthostatic hypotension is well-documented, the prognostic significance of delayed heart rate recovery and impaired autonomic compensation remains insufficiently explored. Emerging evidence suggests that abnormal RPR may predict cardiovascular morbidity and autonomic dysfunction; however, standardized clinical guidelines for its interpretation are lacking. Bridging this gap could enhance early detection of dysautonomia and cardiovascular risk stratification.</p><p><strong>Objective: </strong>This study aimed to examine the pattern of RPR and cardiovascular function indices in healthy young female adults following 10 min of upright standing.</p><p><strong>Methods: </strong>This study evaluated post-orthostatic cardiovascular indices, including RPR measured at two intervals: 10 - 20 s and 21 - 31 s after returning to a reclining sitting position. A total of 35 healthy females were selected for the study, and appropriate inclusion was duly considered. Blood pressure, pulse rate, and other parameters were measured at baseline, after 10 min of standing, and after returning to a reclining sitting position using standard procedures. The first and second RPRs were calculated as the difference between the orthostatic pulse rate and the pulse rate measured during the two intervals, respectively, after returning to a reclining sitting position.</p><p><strong>Results: </strong>There was no significant difference between the first and second RPRs. Among the cardiovascular parameters, only systolic blood pressure and pulse pressure measured after the second RPR were significantly higher than baseline values. In addition, neither the first nor the second RPR correlated with body weight, height, or body mass index.</p><p><strong>Conclusion: </strong>No significant difference was found in autonomic response during the 10 - 20 s and 21 - 31 s post-orthostatic periods in young adult females. Incorporating RPR and related indices into clinical practice provides a non-invasive, cost-effective method to identify and monitor autonomic and cardiovascular dysfunction. This can guide therapeutic strategies, such as fluid management, exercise rehabilitation, or pharmacological interventions, tailored to improve autonomic balance and cardiovascular resilience.</p>","PeriodicalId":73618,"journal":{"name":"Journal of biological methods","volume":"12 3","pages":"e99010068"},"PeriodicalIF":0.0,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12422116/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145042474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 removal of antibody aggregates using TOYOPEARL MX-Trp-650M mixed-mode resin under salt or pH gradient elution. 使用TOYOPEARL MX-Trp-650M混合模式树脂在盐或pH梯度洗脱下有效去除抗体聚集体。
Journal of biological methods Pub Date : 2025-07-30 eCollection Date: 2025-01-01 DOI: 10.14440/jbm.0029
Jinyi Zhang, Penglong Zhang, Yifeng Li
{"title":"Efficient removal of antibody aggregates using TOYOPEARL MX-Trp-650M mixed-mode resin under salt or pH gradient elution.","authors":"Jinyi Zhang, Penglong Zhang, Yifeng Li","doi":"10.14440/jbm.0029","DOIUrl":"10.14440/jbm.0029","url":null,"abstract":"<p><strong>Background: </strong>TOYOPEARL MX-Trp-650M is a mixed-mode resin (Tosoh Bioscience, Japan), which mediates both cation exchange and hydrophobic interactions. While mixed-mode resins are generally effective at removing antibody aggregates, reports specifically evaluating the application of MX-Trp-650M for this purpose remain limited. A previous study suggested that effective separation of monomeric and aggregated antibodies using MX-Trp-650M was achieved only under dual-gradient elution with pH and salt.</p><p><strong>Objective: </strong>This study aimed to further evaluate MX-Trp-650M's aggregate separation potential under various elution conditions.</p><p><strong>Methods: </strong>In an antibody purification case where aggregates were the predominant byproducts, both Capto MMC ImpRes and MX-Trp-650M were evaluated as the first polishing step following Protein A capture. Aggregate separation was monitored and assessed using native gel electrophoresis and size-exclusion chromatography-high-performance liquid chromatography.</p><p><strong>Results: </strong>MX-Trp-650M marginally outperformed Capto MMC ImpRes and achieved excellent aggregate clearance under either salt or pH mono-gradient elution.</p><p><strong>Conclusion: </strong>Combining the results from prior studies, the current data confirm the strong aggregate separation capability of MX-Trp-650M. The results also suggest that the optimal elution conditions for efficacious separation may vary across different antibody purification scenarios.</p>","PeriodicalId":73618,"journal":{"name":"Journal of biological methods","volume":"12 3","pages":"e99010065"},"PeriodicalIF":0.0,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12422109/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145042428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exhale-Dx™: A non-invasive, real-time breath analysis system using deep learning for asthma diagnosis. 呼气- dx™:一种使用深度学习进行哮喘诊断的非侵入性实时呼吸分析系统。
Journal of biological methods Pub Date : 2025-07-11 eCollection Date: 2025-01-01 DOI: 10.14440/jbm.2024.0142
Hanya Ahmed, Jona Angelica Flavier, Victor Higgs
{"title":"Exhale-Dx™: A non-invasive, real-time breath analysis system using deep learning for asthma diagnosis.","authors":"Hanya Ahmed, Jona Angelica Flavier, Victor Higgs","doi":"10.14440/jbm.2024.0142","DOIUrl":"10.14440/jbm.2024.0142","url":null,"abstract":"<p><strong>Background: </strong>Asthma presents significant diagnostic and therapeutic challenges, impacting millions and posing a substantial burden on healthcare systems, particularly in the United Kingdom, where it afflicts roughly 5.4 million individuals. Severe asthma, incurring over 50% of total expenditures, tends to lead to frequent exacerbations and preventable emergency admissions. Traditional diagnostic methods, primarily based on clinical history, can result in delays and misdiagnoses, culpable for over 1,200 deaths annually, 90% of which are considered preventable with timely intervention.</p><p><strong>Objective: </strong>To address this issue, we developed Exhale-Dx™, a point-of-care breath test platform that provides a non-invasive, user-friendly solution for asthma diagnosis and monitoring. Exhale-Dx™ captures volatile organic compounds (VOCs) in exhaled breath, reflecting real-time metabolic and inflammatory markers of lung function. By analyzing these personalized breath signatures, clinicians and patients can detect exacerbations up to three days in advance, thus facilitating early and targeted interventions to reduce emergency care utilization. The system integrates capnographic waveforms, asthma control scores, and clinical lung function data, offering a comprehensive diagnostic profile.</p><p><strong>Methods: </strong>Using Exhale-Dx™ data, we developed the Asthma Diagnostic Enhanced Neural Architecture (ADENA), an advanced deep neural network that leverages VOC biomarkers and lung function data to enhance diagnostic precision.</p><p><strong>Results: </strong>ADENA achieved exceptional performance, delivering 98.7% accuracy, an F1 score of 0.98, and a low mean squared error of 0.065. The deconvolution analysis further confirmed the model's ability to detect significant physiological differences between asthmatic and non-asthmatic profiles.</p><p><strong>Conclusion: </strong>Our findings showed that VOC analysis combined with advanced neural networks could accurately distinguish asthmatic profiles, highlighting their potential for early, non-invasive interventions in respiratory health diagnostics.</p>","PeriodicalId":73618,"journal":{"name":"Journal of biological methods","volume":"12 3","pages":"e99010063"},"PeriodicalIF":0.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12422117/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145042496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correlation between antibacterial activities of two Artemisia spp. extracts and their plant characteristics. 两种青蒿提取物抑菌活性与植物特性的相关性研究
Journal of biological methods Pub Date : 2025-06-19 eCollection Date: 2025-01-01 DOI: 10.14440/jbm.2024.0116
Abdullah Mashraqi, Mohamed A Al Abboud, Khatib Sayeed Ismail, Yosra Modafer, Mukul Sharma, A El-Shabasy
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