Artificial organs最新文献

{"title":"Upcoming Meetings","authors":"","doi":"10.1111/aor.14992","DOIUrl":"https://doi.org/10.1111/aor.14992","url":null,"abstract":"","PeriodicalId":8450,"journal":{"name":"Artificial organs","volume":"49 5","pages":"917"},"PeriodicalIF":2.2,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Expanding the Use of Ex Situ Organ Machine Perfusion Beyond Transplantation","authors":"Paulo N. Martins,&nbsp;Barish H. Edil,&nbsp;Lacey McNally,&nbsp;Narendra R. Battula","doi":"10.1111/aor.15011","DOIUrl":"10.1111/aor.15011","url":null,"abstract":"<div>\u0000 \u0000 <p>Machine perfusion preservation of grafts has become the gold standard organ preservation method. It has been developed to improve the quality of grafts due to the increasing gap between demand and supply of organs for transplantation. Following successful long-term machine perfusion preservation with automated commercial devices developed for preservation of organs for transplantation, there is increasing interest in utilizing perfused discarded human organs and xenografts for a variety of purposes beyond transplantation including gene therapy and modulation, drug testing, chemotherapy, ex vivo surgery, organ supporting systems, bioengineering, and surgical training and education. Here, we review all current and potential applications of machine perfusion preservation.</p>\u0000 </div>","PeriodicalId":8450,"journal":{"name":"Artificial organs","volume":"49 8","pages":"1229-1235"},"PeriodicalIF":2.2,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144061999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of User Experience, Acceptability, Usability, Human-Device Interaction, and Ergonomics in Two Mobile FES-Cycling Systems for Individuals With Spinal Cord Injury.","authors":"Roberta Nossa, Emilia Biffi, Nicole Sanna, Eleonora Diella, Eleonora Guanziroli, Federica Ferrari, Simona Ferrante, Franco Molteni, Alessandra Pedrocchi, Marco Tarabini, Emilia Ambrosini","doi":"10.1111/aor.15007","DOIUrl":"https://doi.org/10.1111/aor.15007","url":null,"abstract":"<p><strong>Background: </strong>Functional Electrical Stimulation Assisted Cycling (FES-cycling) is a rehabilitation intervention for individuals with Spinal Cord Injury (SCI), offering benefits like increased muscle trophism, improved cardiopulmonary function, and reduced bone demineralization. Despite numerous studies on its physical advantages, few have focused on user experience. This study evaluates the user experience, usability, acceptability, and human-device interaction of two FES-cycling systems: a recumbent FES-bike prototype from Politecnico di Milano and the commercial BerkelBike Pro.</p><p><strong>Methods: </strong>We recruited 15 participants with SCI, aged 18-65, with varying injury levels. The user experience (primary outcome), acceptability, usability, human-device interaction, and ergonomics of both systems were investigated by means of 4 questionnaires: the User Experience Questionnaire (UEQ), the Technological Acceptance Measure 3 (TAM-3), the System Usability Scale (SUS), and a customized questionnaire to evaluate human-device interaction both in terms of ergonomic aspects and psychological factors.</p><p><strong>Results: </strong>The user experience received positive evaluations across all dimensions (scores ≥ 1.5 on a scale from -3 to 3), with slightly higher, though not statistically significant, scores for the FB. Secondary outcomes indicated strong acceptability (global TAM-3 scores > 5.5/7 for both devices), high usability ratings (SUS scores ≥ 75/100 for both devices), and favorable interaction and ergonomics, emphasizing ease of use, comfort, and alignment with user expectations.</p><p><strong>Conclusions: </strong>The study underscores the positive user experience as the primary outcome, along with strong acceptance and usability of both devices, emphasizing their potential to enhance Sport-Therapy and the value of integrating user perspectives in future development.</p>","PeriodicalId":8450,"journal":{"name":"Artificial organs","volume":" ","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143953392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Investigation of the Applicability of the Stress-Based and Strain-Based Hemolysis Models for Short-Term Stress Peaks Typical for Rotary Blood Pumps","authors":"Michael Lommel,&nbsp;Vera Froese,&nbsp;Henri Wolff,&nbsp;Nico Dirkes,&nbsp;Katharina Vellguth,&nbsp;Marek Behr,&nbsp;Ulrich Kertzscher","doi":"10.1111/aor.15002","DOIUrl":"10.1111/aor.15002","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Although flow simulations have become more accurate, hemolysis prediction models still show large deviations from measured values in blood-carrying devices. To develop and validate more accurate models, specific hemolysis experiments are needed to determine the influence of parameters on hemolysis, such as stress type and exposure time typical for rotary blood pumps (RBPs).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>In order to investigate the applicability of the hemolysis models to the flow in RBPs, this study performed experiments with human whole blood in three differently shaped flow channels that generate short-term stress peaks. CFD simulations were performed and the applicability of the stress-based and strain-based hemolysis models was investigated by comparing them with the experimental results.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Low and statistically non-significant hemolysis was measured for all geometries and 1200 load repetitions. The CFD simulations determined scalar shear stresses up to 1500 Pa with exposure times in the millisecond range. The stress-based hemolysis model overestimated hemolysis by several orders of magnitude and predicted significant differences between the three flow channels. The strain-based hemolysis model predicted low and approximately equal hemolysis, in agreement with the experimental results.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The results suggest that the stress-based hemolysis model is not appropriate for the applied short-term stress peaks. The strain-based model, which considers the deformation of the RBCs over time, appears to be more appropriate for this type of flow. This implies a similar relationship for RBPs, where these short-term stress peaks are typical.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8450,"journal":{"name":"Artificial organs","volume":"49 7","pages":"1108-1118"},"PeriodicalIF":2.2,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/aor.15002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143955180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent Progress in the Field of Artificial Organs","authors":"","doi":"10.1111/aor.15008","DOIUrl":"10.1111/aor.15008","url":null,"abstract":"","PeriodicalId":8450,"journal":{"name":"Artificial organs","volume":"49 6","pages":"921-922"},"PeriodicalIF":2.2,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143960123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First Gene-Edited Porcine Liver Xenotransplant Into Human","authors":"Maria C. Beyer","doi":"10.1111/aor.15009","DOIUrl":"10.1111/aor.15009","url":null,"abstract":"<div>\u0000 \u0000 <p>A gene-edited pig liver was transplanted into a brain-dead human recipient for 10 days at a center in China. This new leap in xenotransplantation could help discern the viability of such transplants for future patients waiting on the liver recipient list.</p>\u0000 </div>","PeriodicalId":8450,"journal":{"name":"Artificial organs","volume":"49 6","pages":"923-924"},"PeriodicalIF":2.2,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143963672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical Results for Cardiovascular Xenografts Treated With Novel Anticalcification Protocols","authors":"Hong-Gook Lim,&nbsp;Chang Ha Lee,&nbsp;Jae Hong Lim,&nbsp;Eung Re Kim,&nbsp;Yong Jin Kim","doi":"10.1111/aor.15010","DOIUrl":"10.1111/aor.15010","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Glutaraldehyde (GA) generates cross-links between cardiovascular xenografts to obtain tissue stability and attenuate antigenicity. However, the long-term durability of GA-fixed cardiovascular xenografts treated with previous anticalcification strategies has remained a challenge because tissue phospholipids, free aldehyde groups of GA, and residual antigenicity contribute to calcification. This study aimed to assess the safety, efficacy, and clinical performance of a bovine pericardial scaffold treated with our novel anticalcification protocols (Periborn) in patients with cardiovascular diseases.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Bovine pericardia were decellularized with 0.25% sodium dodecyl sulfate, 0.5% Triton X-100, and treated with a space-filler with polyethylene glycol. These tissues were cross-linked with 0.5% GA in a 75% ethanol +5% octanol organic solvent and treated with glycine for detoxification to produce Periborn. Between July 2015 and April 2022, 451 Periborn patches were implanted in 352 cases for cardiovascular surgeries.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The mean age at the time of surgery was 22.74 ± 20.09 years (13 days–89.5 years), follow-up duration was 4.25 ± 2.56 years (17 days–8.6 years), and no patch-related mortalities were observed. Five patients were reoperated owing to patch-related complications including decreased mobility, erosion, pseudoaneurysm, and calcification, and the overall probability of freedom from Periborn-related reoperation was 99.4% ± 0.4% at 1 year, 98.6% ± 0.7% at 5 years, and 95.4% ± 3.2% at 9 years.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>This retrospective study demonstrates the safety and efficacy of the tissue-engineered Periborn bovine pericardial scaffold for the surgical repair of various cardiovascular diseases. The excellent durability and hemodynamic performance of Periborn make our novel anti-calcification protocol attractive and may require long-term follow-up to confirm durability and further research.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8450,"journal":{"name":"Artificial organs","volume":"49 8","pages":"1307-1313"},"PeriodicalIF":2.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/aor.15010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143960013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flow Mode-Dependent Regulation of von Willebrand Factor Degradation in Mechanical Circulatory Support","authors":"Haiwang Wang,&nbsp;Chuanlong Li,&nbsp;Duo Li,&nbsp;Yuansen Chen,&nbsp;Wenli Li,&nbsp;Yanqing Liu,&nbsp;Yongnan Li,&nbsp;Haojun Fan,&nbsp;Shike Hou","doi":"10.1111/aor.15001","DOIUrl":"10.1111/aor.15001","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Among patients reliant on continuous-flow (CF) mechanical circulatory support devices, bleeding is primarily caused by an acquired von Willebrand factor (vWF) deficiency, precipitated by the high shear stress and diminished pulsatility inherent to these systems. However, despite its clinical significance, the relationship between these devices' flow modes and the development of vWF defects remains poorly investigated. Herein, we conducted molecular dynamic (MD) simulations and in vivo validation to investigate this relationship.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This study involved the analysis of a novel flow sensory mechanism of the vWF molecule, elucidating the inherent relationship through an integrated approach including simulations, an in vitro flow platform, and experiments involving rats undergoing venoarterial extracorporeal membrane oxygenation (V-A ECMO).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>MD simulations demonstrated that the vWF-A dimer underwent significant retraction under pulsatile-flow (PF) conditions, indicating an autoinhibitory effect on enzymatic cleavage. Conversely, under CF conditions, we observed a pronounced reduction in circulating vWF levels and a decrease in endothelial cell vWF secretion compared with both the PF and sham groups of rats undergoing V-A ECMO.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>These findings underscore the critical importance of pulsatility in the design of next-generation blood pumps and highlight the potential of our novel rat model in future investigations of the physiological and molecular responses to different blood flow patterns during V-A ECMO.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8450,"journal":{"name":"Artificial organs","volume":"49 8","pages":"1298-1306"},"PeriodicalIF":2.2,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143794564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Upcoming Meetings","authors":"","doi":"10.1111/aor.14981","DOIUrl":"https://doi.org/10.1111/aor.14981","url":null,"abstract":"","PeriodicalId":8450,"journal":{"name":"Artificial organs","volume":"49 4","pages":"722"},"PeriodicalIF":2.2,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143787191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Vitro Evaluation of Liposomal Amphotericin B Adsorption With Different Hemofilters for Continuous Hemofiltration","authors":"Toshihisa Hiraiwa,&nbsp;Naohide Kuriyama,&nbsp;Kazuhiro Moriyama,&nbsp;Shigeki Yamada,&nbsp;Tomoyuki Nakamura,&nbsp;Osamu Nishida","doi":"10.1111/aor.14980","DOIUrl":"10.1111/aor.14980","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Fungemia is an infectious disease with a poor prognosis. Continuous hemofiltration (CHF) is widely used for the treatment of acute kidney injury associated with fungemia. However, the effect of hemofiltration membranes for CHF on antifungal drug concentrations remains poorly understood. Therefore, clarifying the adsorption of antifungal drugs onto these membranes is important. We investigated the adsorption properties of liposomal amphotericin B on different hemofiltration membranes using closed-circulation hemofiltration.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We performed hemofiltration with each solution adjusted to liposomal amphotericin B as a closed circulatory circuit using polyacrylonitrile (AN69ST), polymethyl methacrylate (PMMA), and polysulfone (PS) membranes. Only this circuit was used as a control. Amphotericin B concentration at the inlet and in the effluent of the hemofiltration membrane was measured. The adsorption rate (Ra) of amphotericin B was then calculated.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The concentration of amphotericin B decreased in the PS membranes compared to that in the controls after 15 min (<i>p</i> = 0.03). The Ra of amphotericin B was higher in PS membranes than in the controls (<i>p</i> = 0.02). Amphotericin B was not adsorbed onto the PMMA or AN69ST membranes. The concentration of amphotericin B in these membranes showed no change compared with that in the control after 1440 min. Liposomal amphotericin B was temporarily absorbed on PS membranes, but at clinical doses, it did not appear to affect the antifungal doses.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Different blood purification membranes can be used to treat CHF without affecting the administration of antifungal drugs.</p>\u0000 </section>\u0000 </div>","PeriodicalId":8450,"journal":{"name":"Artificial organs","volume":"49 7","pages":"1126-1131"},"PeriodicalIF":2.2,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/aor.14980","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143787620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}