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35 pages, 3558 KB  
Article
Realistic Performance Assessment of Machine Learning Algorithms for 6G Network Slicing: A Dual-Methodology Approach with Explainable AI Integration
by Sümeye Nur Karahan, Merve Güllü, Deniz Karhan, Sedat Çimen, Mustafa Serdar Osmanca and Necaattin Barışçı
Electronics 2025, 14(19), 3841; https://doi.org/10.3390/electronics14193841 - 27 Sep 2025
Viewed by 393
Abstract
As 6G networks become increasingly complex and heterogeneous, effective classification of network slicing is essential for optimizing resources and managing quality of service. While recent advances demonstrate high accuracy under controlled laboratory conditions, a critical gap exists between algorithm performance evaluation under idealized [...] Read more.
As 6G networks become increasingly complex and heterogeneous, effective classification of network slicing is essential for optimizing resources and managing quality of service. While recent advances demonstrate high accuracy under controlled laboratory conditions, a critical gap exists between algorithm performance evaluation under idealized conditions and their actual effectiveness in realistic deployment scenarios. This study presents a comprehensive comparative analysis of two distinct preprocessing methodologies for 6G network slicing classification: Pure Raw Data Analysis (PRDA) and Literature-Validated Realistic Transformations (LVRTs). We evaluate the impact of these strategies on algorithm performance, resilience characteristics, and practical deployment feasibility to bridge the laboratory–reality gap in 6G network optimization. Our experimental methodology involved testing eleven machine learning algorithms—including traditional ML, ensemble methods, and deep learning approaches—on a dataset comprising 10,000 network slicing samples (expanded to 21,033 through realistic transformations) across five network slice types. The LVRT methodology incorporates realistic operational impairments including market-driven class imbalance (9:1 ratio), multi-layer interference patterns, and systematic missing data reflecting authentic 6G deployment challenges. The experimental results revealed significant differences in algorithm behavior between the two preprocessing approaches. Under PRDA conditions, deep learning models achieved perfect accuracy (100% for CNN and FNN), while traditional algorithms ranged from 60.9% to 89.0%. However, LVRT results exposed dramatic performance variations, with accuracies spanning from 58.0% to 81.2%. Most significantly, we discovered that algorithms achieving excellent laboratory performance experience substantial degradation under realistic conditions, with CNNs showing an 18.8% accuracy loss (dropping from 100% to 81.2%), FNNs experiencing an 18.9% loss (declining from 100% to 81.1%), and Naive Bayes models suffering a 34.8% loss (falling from 89% to 58%). Conversely, SVM (RBF) and Logistic Regression demonstrated counter-intuitive resilience, improving by 14.1 and 10.3 percentage points, respectively, under operational stress, demonstrating superior adaptability to realistic network conditions. This study establishes a resilience-based classification framework enabling informed algorithm selection for diverse 6G deployment scenarios. Additionally, we introduce a comprehensive explainable artificial intelligence (XAI) framework using SHAP analysis to provide interpretable insights into algorithm decision-making processes. The XAI analysis reveals that Packet Loss Budget emerges as the dominant feature across all algorithms, while Slice Jitter and Slice Latency constitute secondary importance features. Cross-scenario interpretability consistency analysis demonstrates that CNN, LSTM, and Naive Bayes achieve perfect or near-perfect consistency scores (0.998–1.000), while SVM and Logistic Regression maintain high consistency (0.988–0.997), making them suitable for regulatory compliance scenarios. In contrast, XGBoost shows low consistency (0.106) despite high accuracy, requiring intensive monitoring for deployment. This research contributes essential insights for bridging the critical gap between algorithm development and deployment success in next-generation wireless networks, providing evidence-based guidelines for algorithm selection based on accuracy, resilience, and interpretability requirements. Our findings establish quantitative resilience boundaries: algorithms achieving >99% laboratory accuracy exhibit 58–81% performance under realistic conditions, with CNN and FNN maintaining the highest absolute accuracy (81.2% and 81.1%, respectively) despite experiencing significant degradation from laboratory conditions. Full article
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10 pages, 1629 KB  
Article
Evaluating Novel Braided Metal Stent for Bilateral Simultaneous Side-by-Side Stenting in Malignant Hilar Biliary Obstruction: A Multicenter, Single-Arm Prospective Study
by Jungnam Lee, Seok Jeong, Eui Joo Kim, Huapyong Kang, Dong Uk Kim and Chang-Il Kwon
J. Clin. Med. 2025, 14(18), 6557; https://doi.org/10.3390/jcm14186557 - 18 Sep 2025
Viewed by 307
Abstract
Background: While the side-by-side stenting technique-characterized by the parallel placement of stents offers procedural simplicity, the augmented radial force exerted by the initial stent may complicate subsequent deployment. This multicenter study evaluated the practicality and safety of bilateral side-by-side stenting using novel [...] Read more.
Background: While the side-by-side stenting technique-characterized by the parallel placement of stents offers procedural simplicity, the augmented radial force exerted by the initial stent may complicate subsequent deployment. This multicenter study evaluated the practicality and safety of bilateral side-by-side stenting using novel braided self-expandable metal stents (BenefitTM; M.I.Tech Co., Ltd., Pyeongtaek, Republic of Korea). Statistical analysis included survival analysis (Kaplan–Meier) and Cox proportional hazards regression to identify predictive factors. Patients and Methods: In this multicenter study, patients with inoperable malignant hilar biliary obstruction (Bismuth type II–IV) underwent simultaneous side-by-side endoscopic placement of two braided self-expandable metal stents. The primary outcome was stent patency. The secondary outcomes included technical and clinical success, and adverse events monitored for up to one year. Results: A total of 27 patients were included in the final analysis. The technical success rate was 92.6% (25/27), and the clinical success rate was 88.0% (22/25). The median stent patency was 93 days, with cumulative patency rates of 87.4% at 3 months and 49.7% at 12 months. Tumor ingrowth was the most common cause of stent occlusion (66.7%). Early adverse events occurred in 2 patients (one cholangitis and one stent migration), supporting the favorable safety profile of this approach. Conclusions: The simultaneous side-by-side placement of novel braided self-expandable metal stents yielded high technical success and favorable clinical outcomes in patients with inoperable malignant hilar biliary obstruction. This approach provided substantial stent patency with a low complication rate, supporting its utility as a safe and effective palliative strategy for the management of malignant hilar biliary obstruction. Full article
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21 pages, 2196 KB  
Article
Clinical, Psychosocial, and Structural Factors Associated with the Detection of HIV Drug Resistance in Children Living with HIV in Kisumu, Kenya: Secondary Analysis of Data from the Opt4Kids Study
by Andrea J. Scallon, Pooja Maheria, Patrick Oyaro, Katherine K. Thomas, Bhavna H. Chohan, Francesca Odhiambo, Evelyn Brown, Edwin Ochomo, Enericah Karauki, Nashon Yongo, Shukri A. Hassan, Marley D. Bishop, Ingrid A. Beck, Ceejay Boyce, Lisa M. Frenkel, Lisa Abuogi and Rena C. Patel
Viruses 2025, 17(9), 1246; https://doi.org/10.3390/v17091246 - 16 Sep 2025
Viewed by 868
Abstract
Background: HIV drug resistance (DR) mutations can compromise antiretroviral therapy (ART) success among children living with HIV (CLHIV). We conducted a secondary analysis using data from a randomized control trial for ART monitoring among CLHIV in Kisumu County, Kenya from 2019 to 2023, [...] Read more.
Background: HIV drug resistance (DR) mutations can compromise antiretroviral therapy (ART) success among children living with HIV (CLHIV). We conducted a secondary analysis using data from a randomized control trial for ART monitoring among CLHIV in Kisumu County, Kenya from 2019 to 2023, to assess clinical, psychosocial, and structural factors associated with HIV DR. Methods: 704 CLHIV were followed for 12+ months, with characteristics captured at enrollment and follow-up visits in the “parent” randomized-controlled-trial (of point-of-care plasma viral load testing and for viremias ≥ 1000 copies/mL HIV genotyping for DR vs. standard-of-care) and an observational “extension” substudy (of participants on a dolutegravir-containing ART with genotyping performed on viremic specimens ≥ 200 copies/mL). A multivariate modified Poisson regression model was used to analyze factors associated with sequences yielding a Stanford HIVDR database DR penalty score (DR-PS) ≥ 30 to a nucleos(t)ides and/or non-nucleoside reverse transcriptase inhibitor, protease inhibitor (PI), and/or integrase inhibitor (INSTI). Results: Among 113 (16.1%) participants who underwent genotyping, 93 (82.3%) had a DR-PS ≥ 30. DR-PS ≥ 30 were associated with age 1–5 years (adjusted risk ratio (ARR) = 1.84; 95% confidence interval (CI): 1.07, 3.14), history of viremia ≥ 1000 copies/mL (ARR = 4.18; 95% CI: 2.77, 6.31), prescription of a PI- (ARR = 6.05; 95% CI: 3.43, 10.68) or INSTI-containing regimen (ARR = 1.83; 95% CI: 1.08, 3.11), poor adherence to ART (ARR = 1.91; 95% CI: 1.32, 2.76), lack of caregiver confidence in ART administration (ARR = 1.89; 95% CI: 1.11, 3.22), and mid-sized clinic populations (ARR = 0.55; 95% CI: 0.33, 0.92). Conclusion: Addressing social factors associated with DR-PS ≥ 30 may improve ART success among CLHIV. Full article
(This article belongs to the Special Issue Antiviral Resistance Mutations)
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13 pages, 3462 KB  
Article
Microcontact-Printed Optical Biosensor for Non-Invasive Detection of TNF-α: Point-of-Care Monitoring of Heart Failure
by Abdoullatif Baraket, Alexi Bonament, Abdellatif Aarfane, Hamid Nasrellah, Meryem Bensemlali, Joan Bausells, Nicole Jaffrezic-Renault, Nadia Zine and Abdelhamid Errachid
Chemosensors 2025, 13(9), 338; https://doi.org/10.3390/chemosensors13090338 - 5 Sep 2025
Viewed by 568
Abstract
Tumor Necrosis Factor-alpha (TNF-α) is a pro-inflammatory cytokine strongly associated with the early onset and progression of heart failure (HF). In this study, we present the design and fabrication of a label-free, fluorescence-based biosensor for the detection of TNF-α cytokines. The biosensor is [...] Read more.
Tumor Necrosis Factor-alpha (TNF-α) is a pro-inflammatory cytokine strongly associated with the early onset and progression of heart failure (HF). In this study, we present the design and fabrication of a label-free, fluorescence-based biosensor for the detection of TNF-α cytokines. The biosensor is constructed using microcontact printing (μCP) to pattern Triethoxysilylundecanal (TESUD) on oxygen plasma-activated polydimethylsiloxane (PDMS) substrates, forming self-assembled monolayers (SAMs) of microstructures. TNF-α antibodies are then covalently immobilized via imine coupling. Detection of TNF-α cytokines at 50 µg/mL was achieved via an optical “sandwich” immunoassay with rhodamine-labeled secondary antibodies, enabling visualization by fluorescence microscopy. Surface wettability analysis confirmed successful stepwise functionalization, while imaging revealed well-defined microstructures and specific immune binding of TNF-α. This platform demonstrates a proof-of-concept and offers a non-invasive, sensitive, and cost-effective alternative for the early detection of TNF-α in biological fluids, with potential applications in HF monitoring. Full article
(This article belongs to the Special Issue Advanced Biosensors for Point-of-Care Testing in Analytical Chemistry)
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25 pages, 1882 KB  
Article
An Assessment of Collector-Drainage Water and Groundwater—An Application of CCME WQI Model
by Nilufar Rajabova, Vafabay Sherimbetov, Rehan Sadiq and Alaa Farouk Aboukila
Water 2025, 17(15), 2191; https://doi.org/10.3390/w17152191 - 23 Jul 2025
Cited by 1 | Viewed by 975
Abstract
According to Victor Ernest Shelford’s ‘Law of Tolerance,’ organisms within ecosystems thrive optimally when environmental conditions are favorable. Applying this principle to ecosystems and agro-ecosystems facing water scarcity or environmental challenges can significantly enhance their productivity. In these ecosystems, phytocenosis adjusts its conditions [...] Read more.
According to Victor Ernest Shelford’s ‘Law of Tolerance,’ organisms within ecosystems thrive optimally when environmental conditions are favorable. Applying this principle to ecosystems and agro-ecosystems facing water scarcity or environmental challenges can significantly enhance their productivity. In these ecosystems, phytocenosis adjusts its conditions by utilizing water with varying salinity levels. Moreover, establishing optimal drinking water conditions for human populations within an ecosystem can help mitigate future negative succession processes. The purpose of this study is to evaluate the quality of two distinct water sources in the Amudarya district of the Republic of Karakalpakstan, Uzbekistan: collector-drainage water and groundwater at depths of 10 to 25 m. This research is highly relevant in the context of climate change, as improper management of water salinity, particularly in collector-drainage water, may exacerbate soil salinization and degrade drinking water quality. The primary methodology of this study is as follows: The Food and Agriculture Organization of the United Nations (FAO) standard for collector-drainage water is applied, and the water quality index is assessed using the CCME WQI model. The Canadian Council of Ministers of the Environment (CCME) model is adapted to assess groundwater quality using Uzbekistan’s national drinking water quality standards. The results of two years of collected data, i.e., 2021 and 2023, show that the water quality index of collector-drainage water indicates that it has limited potential for use as secondary water for the irrigation of sensitive crops and has been classified as ‘Poor’. As a result, salinity increased by 8.33% by 2023. In contrast, groundwater quality was rated as ‘Fair’ in 2021, showing a slight deterioration by 2023. Moreover, a comparative analysis of CCME WQI values for collector-drainage and groundwater in the region, in conjunction with findings from Ethiopia, India, Iraq, and Turkey, indicates a consistent decline in water quality, primarily due to agriculture and various other anthropogenic pollution sources, underscoring the critical need for sustainable water resource management. This study highlights the need to use organic fertilizers in agriculture to protect drinking water quality, improve crop yields, and promote soil health, while reducing reliance on chemical inputs. Furthermore, adopting WQI models under changing climatic conditions can improve agricultural productivity, enhance groundwater quality, and provide better environmental monitoring systems. Full article
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20 pages, 3788 KB  
Article
Assessing Forest Succession Along Environment, Trait, and Composition Gradients in the Brazilian Atlantic Forest
by Carem Valente, Renan Hollunder, Cristiane Moura, Geovane Siqueira, Henrique Dias and Gilson da Silva
Forests 2025, 16(7), 1169; https://doi.org/10.3390/f16071169 - 16 Jul 2025
Viewed by 778
Abstract
Tropical forests face increasing threats and are often replaced by secondary forests that regenerate after disturbances. In the Atlantic Forest, this creates fragments of different successional stages. The aim of this study is to understand how soil nutrients and light availability gradients influence [...] Read more.
Tropical forests face increasing threats and are often replaced by secondary forests that regenerate after disturbances. In the Atlantic Forest, this creates fragments of different successional stages. The aim of this study is to understand how soil nutrients and light availability gradients influence the species composition and structure of trees and regenerating strata in remnants of lowland rainforest. We sampled 15 plots for the tree stratum (DBH ≥ 5 cm) and 45 units for the regenerating stratum (height ≥ 50 cm, DBH < 5 cm), obtaining phytosociological, entropy and equitability data for both strata. Canopy openness was assessed with hemispherical photos and soil samples were homogenized. To analyze the interactions between the vegetation of the tree layer and the environmental variables, we carried out three principal component analyses and two redundancy analyses and applied a linear model. The young fragments showed good recovery, significant species diversity, and positive successional changes, while the older ones had higher species richness and were in an advanced stage of succession. In addition, younger forests are associated with sandy, nutrient-poor soils and greater exposure to light, while mature forests have more fertile soils, display a greater diversity of dispersal strategies, are rich in soil clay, and have less light availability. Mature forests support biodiversity and regeneration better than secondary forests, highlighting the importance of preserving mature fragments and monitoring secondary ones to sustain tropical biodiversity. Full article
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12 pages, 247 KB  
Article
Restoring Control: Real-World Success with Imipenem–Relebactam in Critical MDR Infections—A Multicenter Observational Study
by Andrea Marino, Giuseppe Pipitone, Emmanuele Venanzi Rullo, Federica Cosentino, Rita Ippolito, Roberta Costa, Sara Bagarello, Ylenia Russotto, Chiara Iaria, Bruno Cacopardo and Giuseppe Nunnari
Pathogens 2025, 14(7), 685; https://doi.org/10.3390/pathogens14070685 - 11 Jul 2025
Viewed by 1053
Abstract
Background: Multidrug-resistant (MDR) Gram-negative infections, particularly those caused by carbapenem-resistant Enterobacterales (CRE) and difficult-to-treat Pseudomonas aeruginosa (DTR-Pa), present a growing global healthcare challenge, especially in critically ill populations. Imipenem–relebactam (I/R), a novel β-lactam/β-lactamase inhibitor combination, has shown efficacy in clinical trials, but [...] Read more.
Background: Multidrug-resistant (MDR) Gram-negative infections, particularly those caused by carbapenem-resistant Enterobacterales (CRE) and difficult-to-treat Pseudomonas aeruginosa (DTR-Pa), present a growing global healthcare challenge, especially in critically ill populations. Imipenem–relebactam (I/R), a novel β-lactam/β-lactamase inhibitor combination, has shown efficacy in clinical trials, but real-world data remain limited. Methods: We conducted a multicenter, retrospective–prospective observational study across tertiary-care hospitals in Italy between January 2020 and May 2025. Adult patients (≥18 years) treated with I/R for ≥48 h for suspected or confirmed MDR Gram-negative infections were included. Primary endpoints were clinical success at the end of therapy and 30-day all-cause mortality. Secondary endpoints included microbiological eradication, recurrence, safety, and predictors of treatment failure. Statistical analysis involved descriptive methods and correlation analysis for mortality predictors. Results: Twenty-nine patients were included (median age 66 years; 58.6% ICU admission; 71.4% mechanical ventilation). Clinical success was achieved in 22/29 patients (75.9%), while 30-day mortality was 24.1% (7/29). The most common pathogen was Klebsiella pneumoniae (62.1%), with 41.4% of infections being polymicrobial. Microbiological eradication was confirmed in all the BSIs. Parenteral nutrition (p = 0.016), sepsis at presentation (p = 0.04), candidemia (p = 0.036), and arterial catheter use (p = 0.029) were significantly more frequent in non-survivors. Survivors showed significant reductions in CRP, PCT, and bilirubin at 48 h, while non-survivors did not. Parenteral nutrition (rho = 0.427, p = 0.023), sepsis (rho = 0.378, p = 0.043), and arterial catheter use (rho = 0.384, p = 0.04) were significantly correlated with mortality. Conclusions: In this Italian multicenter cohort of critically ill patients, imipenem–relebactam demonstrated high clinical success and acceptable mortality rates in the treatment of severe MDR Gram-negative infections, particularly those caused by KPC-producing K. pneumoniae. Early biomarker dynamics may aid in monitoring treatment response. Larger prospective studies are needed to confirm these findings and define optimal treatment strategies. Full article
12 pages, 992 KB  
Article
Surgical Outcomes of XEN45 Gel Stent Using Ab Interno Technique in Open-Angle Glaucoma: A 2-Year Follow-Up Study
by Doah Kim, Myungjin Kim, Marvin Lee and Seungsoo Rho
J. Clin. Med. 2025, 14(13), 4617; https://doi.org/10.3390/jcm14134617 - 30 Jun 2025
Viewed by 1028
Abstract
Background/Objectives: This study aims to evaluate the long-term efficacy and safety of ab interno techniques using minimally invasive glaucoma surgery (MIGS), specifically XEN gel stent implantation, by evaluating its 2-year outcomes in patients with primary open-angle glaucoma (POAG) and pseudoexfoliation glaucoma (PXG). [...] Read more.
Background/Objectives: This study aims to evaluate the long-term efficacy and safety of ab interno techniques using minimally invasive glaucoma surgery (MIGS), specifically XEN gel stent implantation, by evaluating its 2-year outcomes in patients with primary open-angle glaucoma (POAG) and pseudoexfoliation glaucoma (PXG). Methods: This retrospective single-center study consecutively included 31 eyes of 31 patients with POAG or PXG who underwent XEN gel stent implantation. Patients were followed for 24 months, with assessments at multiple time points. Success was defined as achieving an IOP of less than 14 mmHg and a reduction of more than 20% from preoperative IOP without additional glaucoma surgery. Bleb morphology was evaluated using anterior segment optical coherence tomography (AS-OCT) and slit-lamp photographs. Postoperative interventions and complications were also recorded. Results: At 24 months, complete success and qualified success rates were 35.5% (11/31) and 51.6% (16/31), respectively. There was no difference in surgical success rates at 2 years based on the tip location (intraconjunctiva, intratenon, and uviform) on the 1st postoperative day. Patients with high sparse wall on AS-OCT imaging or avascular bleb morphology via slit-lamp photography at 6 months postoperatively had higher complete success rates at 2 years than those without (p = 0.007, p = 0.009, respectively). Patients with avascular bleb types at 6 months postoperatively had higher qualified success rates at 2 years compared with the vascular types (p = 0.038). Needling was performed in 32.3% of eyes, with secondary surgical procedures required in 16.1% of eyes. The most common adverse event was hypotony, occurring in 67.7% of eyes on the 1st postoperative day but resolving within 6 months. Conclusions: The ab interno XEN gel stent is an effective and minimally invasive option for managing POAG and PXG, with long-term success predicted by the AS-OCT assessment of bleb morphology at 6 months. Proactive postoperative management, emphasizing early intervention and monitoring, is crucial for maintaining optimal outcomes. Full article
(This article belongs to the Special Issue New Insights into Glaucoma)
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11 pages, 943 KB  
Article
Hanging Position of Artificial Nest Boxes Affects Reproductive Success of Russet Sparrow Passer cinnamomeus
by Pan Peng, Wanzhu Chen, Nursoltan Qianhan, Hang Yu, Qian Hu, Jiagui Zhu, Hua Huang, Zhiyong Du and Jianqiang Li
Animals 2025, 15(10), 1413; https://doi.org/10.3390/ani15101413 - 14 May 2025
Viewed by 522
Abstract
Secondary cavity-nesting birds can utilize artificial nest boxes provided by humans for breeding, making nest boxes important approaches for attracting birds. Artificial nest boxes are therefore widely used in fields such as ornithological research and avian diversity conservation. Under natural conditions, the location [...] Read more.
Secondary cavity-nesting birds can utilize artificial nest boxes provided by humans for breeding, making nest boxes important approaches for attracting birds. Artificial nest boxes are therefore widely used in fields such as ornithological research and avian diversity conservation. Under natural conditions, the location of nests often affects the reproductive success of birds. Therefore, understanding the impact of nest box hanging positions on the breeding success of secondary cavity-nesting birds is of great significance for guiding the placement of artificial nest boxes. In this study, we explored the potential factors, including nest-box location, that affect the reproductive success of the russet sparrow (Passer cinnamomeus) by monitoring the nest-site characteristics and reproductive parameters such as clutch size and brood size of those breeding in artificial nest boxes near Dongzhai National Nature Reserve, Henan, China, from April to July 2024. Russet sparrow nesting in boxes on coniferous trees and utility poles showed no significant differences in clutch size, hatching rate, brood size, pre-laying nest-abandonment rate, and whether the breeding was ultimately successful. Nests with earlier egg-laying dates had larger clutch sizes, higher hatching rates, and greater brood sizes. However, the number of fledglings and fledging success were not affected by laying date, and fledging success was not affected by either the distance from the nest site to the nearest road, or the brood size. Both larger brood size and greater distance from the nearest road were associated with increased numbers of fledglings. Furthermore, russet sparrows nesting in boxes on coniferous trees produced significantly more fledglings and exhibited higher fledging success compared to those nesting on utility poles, suggesting that nest boxes’ hanging position may influence russet sparrow reproductive success. These findings not only supplement existing ecological data on russet sparrow reproduction in artificial nest boxes but also provide important insights for avian conservation practices, highlighting the necessity of fully considering hanging position when deploying artificial nest boxes for birds. Full article
(This article belongs to the Special Issue Unveiling the Breeding Biology and Life History Evolution in Birds)
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18 pages, 4678 KB  
Article
Validation and Optimization of PURE Ribosome Display for Screening Synthetic Nanobody Libraries
by Bingying Liu and Daiwen Yang
Antibodies 2025, 14(2), 39; https://doi.org/10.3390/antib14020039 - 2 May 2025
Viewed by 1907
Abstract
Background/Objectives: PURE (Protein synthesis Using Recombinant Elements), an ideal system for ribosome display, has been successfully used for nanobody selection. However, its limitations in nanobody selection, especially for synthetic nanobody libraries, have not been clearly elucidated, thereby restricting its utilization. Methods: The PURE [...] Read more.
Background/Objectives: PURE (Protein synthesis Using Recombinant Elements), an ideal system for ribosome display, has been successfully used for nanobody selection. However, its limitations in nanobody selection, especially for synthetic nanobody libraries, have not been clearly elucidated, thereby restricting its utilization. Methods: The PURE ribosome display selection process was closely monitored using RNA agarose gel electrophoresis to assess the presence of mRNA molecules in each fraction, including the flow-through, washing, and elution fractions. Additionally, a real-time validation method for monitoring each biopanning round was implemented, ensuring the successful enrichment of target protein-specific binders. The selection process was further optimized by introducing a target protein elution step prior to the EDTA-mediated disassembly, as well as by altering the immobilization surfaces. Finally, the efficiency of PURE ribosome display was enhanced by replacing the spacer gene. Results: The efficiency of PURE ribosome display was merely 4% with an unfavourable spacer gene. Using this spacer gene, EGFP- and human fatty acid-binding protein 4-specific nanobodies from a synthetic nanobody library were we successfully identified through optimizing the selection process. Choosing a spacer gene less prone to secondary structure formation increased significantly its efficiency in displaying synthetic nanobody libraries. Conclusions: Implementing a target protein elution step prior to EDTA-mediated disassembly and modifying the immobilization surfaces effectively increase selection efficiency. For PURE ribosome display, efficiency was further improved using a suitable spacer gene, enabling the display of large libraries. Full article
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12 pages, 1624 KB  
Article
Endoscopic Balloon Dilation for Primary Obstructive Megaureter in Children: Early Outcomes and Complications—A Case Series
by George Vlad Isac and Nicolae Sebastian Ionescu
Medicina 2025, 61(3), 479; https://doi.org/10.3390/medicina61030479 - 10 Mar 2025
Viewed by 1271
Abstract
Background and Objectives: Congenital urological malformations are among the most frequent causes of pediatric chronic kidney disease. Endoscopic balloon dilation and ureteral stenting can be considered less invasive options compared to conventional surgery for primary obstructive megaureter (POM). Nevertheless, the long-term results [...] Read more.
Background and Objectives: Congenital urological malformations are among the most frequent causes of pediatric chronic kidney disease. Endoscopic balloon dilation and ureteral stenting can be considered less invasive options compared to conventional surgery for primary obstructive megaureter (POM). Nevertheless, the long-term results and side effects of these methods have not yet been well documented. The purpose of this study is to analyze the effectiveness and safety of the endoscopic treatment of POM in children, with the aim of assisting clinical decision making and improving treatment plans. Materials and Methods: A retrospective longitudinal study was performed at the Pediatric Surgery Department of the “M.S. Curie” Emergency Clinical Hospital for Children in Bucharest between October 2020 and September 2024. Eleven endoscopic interventions were performed in five pediatric patients (four boys and one girl) who had six affected ureters, with a median age of 22 months. The inclusion criteria were retrovesical ureter dilation > 7 mm and no prior surgeries of the ureterovesical junction. Cases with secondary megaureters were excluded from the study. The procedures comprised HPEBD and temporary double-J (DJ) stent placement, with systematic postoperative monitoring. Success was defined as improvements in symptoms, a decrease in hydronephrosis, and the preservation of renal function. Results: A final success rate of 83.3% was achieved with endoscopic treatment. Complications were noted in 73% of cases: Clavien–Dindo Grade I (30%); Clavien–Dindo Grade II (20%); Clavien–Dindo Grade IIIb (50%). The documented complications consisted of balloon rupture, stent migration, restenosis, and febrile urinary tract infections (UTIs). Nonetheless, no major complications were observed. The postoperative monitoring showed that renal function was stable and that hydronephrosis had improved gradually. Conclusions: Endoscopic procedures offer a promising, minimally invasive treatment for POM in children with a good success rate. However, the high complication risk necessitates careful patient selection, post-surgery monitoring, and clear guidelines. Full article
(This article belongs to the Section Pediatrics)
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16 pages, 884 KB  
Protocol
Co-Design and Evaluation Protocol for the RECOVER Model of Care After Childhood Cancer Treatment
by Natalie Bradford, Christine Cashion, Erin Sharwood, Shelley Rumble, Paula Condon, Danica Cossio, Helen Stratton, Stuart Ekberg, Remziye Semerci, Alison Bowers, Jason Pole and Kimberly Alexander
Healthcare 2025, 13(5), 454; https://doi.org/10.3390/healthcare13050454 - 20 Feb 2025
Viewed by 1216
Abstract
Background: Advances in diagnosis and treatment have significantly increased survival rates for childhood cancer, leading to a growing population of long-term survivors. However, these survivors face substantial physical and psychological sequelae that affect both the child and their family. We developed the RECOVER [...] Read more.
Background: Advances in diagnosis and treatment have significantly increased survival rates for childhood cancer, leading to a growing population of long-term survivors. However, these survivors face substantial physical and psychological sequelae that affect both the child and their family. We developed the RECOVER model of care to support childhood cancer survivors as they transition from the end of their planned treatment to survivorship, addressing the broader health and wellness needs beyond medical surveillance. The primary objectives are to assess the feasibility and acceptability of the RECOVER model of care in routine paediatric oncology practice. Secondary objectives include evaluating preliminary efficacy outcomes and identifying factors that influence the successful adoption and integration of the model. Methods: The study comprises a Type 2 Hybrid Implementation/Effectiveness non-randomised controlled trial to compare historical and prospective data. Quantitative data will assess feasibility, reach, effectiveness, adoption, maintenance, and implementation. The qualitative component will assess end-user acceptability and appropriateness through focus groups, surveys, and interviews. Quantitative and qualitative results will be integrated during the interpretation phase to provide complementary insights into the interconnected contextual factors that facilitate the model uptake. Discussion: The RECOVER model of care aims to offer a robust approach to survivorship care, facilitating the continuous monitoring and management of long-term and late effects in childhood cancer survivors. This model has the potential to significantly improve the quality of life and health outcomes for this vulnerable population by addressing their comprehensive needs in a timely and systematic manner. Full article
(This article belongs to the Section Healthcare Quality, Patient Safety, and Self-care Management)
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18 pages, 1362 KB  
Article
Does Heart Rate Variability Predict Impairment of Operational Performance in Divers?
by John Freiberger, Bruce Derrick, Ki H. Chon, Md Billal Hossain, Hugo F. Posada-Quintero, Mary Cooter and Richard Moon
Sensors 2024, 24(23), 7726; https://doi.org/10.3390/s24237726 - 3 Dec 2024
Viewed by 1645
Abstract
We examined data from Naval Sea Systems Command grant project N0463A-12-C-001, “Hypercapnia: cognitive effects and monitoring”, with the objective of validating or repudiating heart rate variability (HRV) as a warning sign of cognitive impairment from diving gas narcosis or oxygen toxicity. We compared [...] Read more.
We examined data from Naval Sea Systems Command grant project N0463A-12-C-001, “Hypercapnia: cognitive effects and monitoring”, with the objective of validating or repudiating heart rate variability (HRV) as a warning sign of cognitive impairment from diving gas narcosis or oxygen toxicity. We compared HRV feature scores to their temporally corresponding cognitive outcomes under normal and narcotizing conditions to identify specific HRV features associated with cognitive changes. N0463A-12-C-001 was conducted between 17 September 2013 and 29 January 2016 and employed NASA’s multi-attribute task battery (MATB-II) flight simulator to examine the independent effects of CO2, N2, and O2 partial pressure on diver performance at simulated depths up to 61 msw (200 fsw). We assessed the association of 23 distinct HRV features scores from 432 of the study’s analyzable exposure stages in relation to MATB-II’s four performance subclasses (motor, memory, attention, strategy) while controlling for exercise and CO2, N2, and O2 gas partial pressure. Performance decrements were associated with normalized high-frequency HRVfeatures (HFnu, p = 0.0016) and the number of pairs of successive R-R intervals that differed by more than 50 ms (NN50count1, p = 0.04). Secondary analysis with stratification restricted to non-exercise stages showed that several HRV parameters, including root mean square of the successive difference (RMSSD, p = 0.0015), width of Poincaré plot (p = 0.0017), NN50count1 (p = 0.0019), and standard deviation of normal-to-normal R peaks (p = 0.0082), were associated with performance impairment. The RMSSD association retained statistical significance after Bonferroni correction for multiple tests. HRV features collected from divers tested under narcotizing conditions of breathing gas partial pressure and exercise were associated with performance impairment. Full article
(This article belongs to the Special Issue (Bio)sensors for Physiological Monitoring)
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10 pages, 12686 KB  
Article
Title: Is Celiac Trunk Revascularization Necessary After High-Flow Pancreaticoduodenal Arterial Arcades Aneurysm Retrograde Embolization?
by Mohamed Salim Jazzar, Hicham Kobeiter, Mario Ghosn, Raphael Amar, Youssef Zaarour, Athena Galletto Pregliasco, Pascal Desgranges, Vania Tacher, Mostafa El Hajjam and Haytham Derbel
J. Clin. Med. 2024, 13(23), 7063; https://doi.org/10.3390/jcm13237063 - 22 Nov 2024
Cited by 1 | Viewed by 1841
Abstract
Background and Objective: High-flow pancreaticoduodenal artery (PDA) aneurysms secondary to celiac trunk occlusion or stenosis have a high risk of rupture. Embolization offers a less invasive alternative to surgery. We evaluated the effectiveness and safety of retrograde embolization via the superior mesenteric artery [...] Read more.
Background and Objective: High-flow pancreaticoduodenal artery (PDA) aneurysms secondary to celiac trunk occlusion or stenosis have a high risk of rupture. Embolization offers a less invasive alternative to surgery. We evaluated the effectiveness and safety of retrograde embolization via the superior mesenteric artery of high-flow PDA aneurysms without celiac trunk revascularization. Methods: This retrospective bicentric study included patients who underwent embolization of high-flow PDA aneurysms due to significant celiac trunk stenosis or occlusion. All patients underwent pre-interventional dynamic contrast-enhanced computed tomography. Retrograde embolization was performed using microcoils and/or liquid agents without celiac trunk revascularization. Follow up involved clinical and radiological assessment at one month. Technical and clinical success were evaluated, and complications were categorized as minor or major. Results: Twenty-three patients (mean age 65 ± 14 years; 52% male) were included. Emergency embolization was required in 12 patients (52%). The technical success rate was 100%. Patients were monitored for a median of 16 months. Clinical success was 87%. No hemorrhagic recurrences were observed. Minor complications occurred in two cases. One major complication involved splenic infarction due to glue migration, requiring splenectomy and intensive unit care admission. Conclusions: Retrograde embolization of high-flow PDA aneurysms is effective and safe without needing celiac trunk revascularization. Full article
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11 pages, 831 KB  
Article
Arterial Stiffness as a New Predictor of Clinical Outcome in Patients with Polycythemia Vera
by Olga Mulas, Alessandro Sestu, Alessandro Costa, Salvatore Chessa, Carla Vargiu, Ludovica Corda, Francesca Pittau, Giorgio La Nasa, Giovanni Caocci and Angelo Scuteri
J. Clin. Med. 2024, 13(22), 6811; https://doi.org/10.3390/jcm13226811 - 13 Nov 2024
Cited by 1 | Viewed by 1669
Abstract
Background: Thrombotic adverse events and disease progression are crucial in Polycythemia Vera (PV), as it stands as the leading cause of mortality. The pulse wave velocity (PWV) is a valuable indicator of arterial aging and often plays a significant independent role in contributing [...] Read more.
Background: Thrombotic adverse events and disease progression are crucial in Polycythemia Vera (PV), as it stands as the leading cause of mortality. The pulse wave velocity (PWV) is a valuable indicator of arterial aging and often plays a significant independent role in contributing to cardiovascular adverse events (CV-AEs). The aim of this study was to examine the relationship between PWV and critical vascular function parameters, with the goal of identifying new predictive factors of vascular damage and exploring a potential connection with disease progression. Methods: Non-invasive aortic stiffness was assessed through carotid–femoral PWV measurement. PWV was measured using the SphygmoCor device. History of arterial or venous thrombosis (TAEs) or other CV-AEs was collected at baseline. PWV measurements were repeated at baseline, at 6 and at 12 months. Results: The study involved 28 PV patients aged 27 to 77 years, with 57.1% being male. Fourteen patients (50%) reported a high-risk thrombotic score at diagnosis, and 60.7% had at least one comorbidity. Multivariable regression models showed that hemoglobin levels were independently associated with PWV (β: 0.68, SE 0.24, p < 0.01). During the follow-up period (median duration 21.3 months, range 6–33), a total of 13 events were documented. Specifically, two patients exhibited a loss of response to treatment, four patients presented an increase in spleen diameters, three patients displayed an escalation of systemic symptoms, and three patients had a clear progression to secondary myelofibrosis. PWV (per 1 m/s: OR 1.70, 95% CI 1.00–2.91, p = 0.047) and leukocyte count (per 1 × 103/μL: OR 1.47, 95% CI: 1.04–2.09, p = 0.043) were significant predictors of events, independently of waist circumference, blood pressure, treatment, and hematocrit. Conclusions: PWV has demonstrated its potential as an effective tool for monitoring PV patients. It stands as a clinical parameter that can predict the risk of progression in PV patients. Further investigation is essential to fully explore this potential. If successful, it could offer clinicians a valuable resource for effectively managing PV patients. Full article
(This article belongs to the Section Hematology)
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