Article
Microbiology
Julien Tap, Stine Storsrud, Boris Le Neve, Aurelie Cotillard, Nicolas Pons, Joel Dore, Lena Ohman, Hans Tornblom, Muriel Derrien, Magnus Simren
Summary: Individuals with severe IBS were found to have a higher intake of poorer-quality food items, and the covariations between gut microbiota at subspecies level and diet were associated with factors such as symptom severity. The study provides insight into diet-microbiota-symptom interactions and may guide future interventional studies on gut microbiome-based nutritional recommendations for managing gastrointestinal symptoms.
Article
Biochemistry & Molecular Biology
Qian Li, Xin Shen, Chenguang Liu, Dongming Xing
Summary: A series of carbon dots (CDs) with high complexation ability with Cu2+ were prepared and used to dissolve Cu2+-alginate hydrogels, showing great potential in removing exudes and alleviating pain during wound dressing replacement.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Huifeng Dong, Liangyu Wang, Lin Du, Xing Wang, Qin Li, Xiaoyue Wang, Jie Zhang, Jun Nie, Guiping Ma
Summary: Developing a multifunctional hydrogel dressing that can adapt to complex and changeable environments, reconstruct skin sensory functions, and provide continuous bactericidal activity is challenging. In this study, a hydrogel dressing based on alginate and polycation was developed, which showed excellent antibacterial properties and accelerated wound healing in a rat model. The hydrogel also demonstrated multiple response modes for strain, pressure, and temperature sensing, providing a smart solution for wound healing and human health monitoring.
Article
Chemistry, Physical
Rene Messina, Ebenezer Kemgang
Summary: The aggregation of dipolar chains driven by thermal fluctuations in an external strong (electric or magnetic) field is investigated theoretically. A new simple electrostatic mechanism that rationalizes the counter-intuitive lateral coalescence of dipolar chains is discovered. The quadrupolar attractive mode with correlated chain-curvatures is identified in the conducted Monte Carlo simulations, shedding new light on a longstanding problem in soft matter and related areas.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Polymer Science
Yen-Chi Huang, Wei-Cheng Chen, Shiao-Wei Kuo
Summary: In this study, PEO-b-PCL diblock copolymers and phenolic/DDSQ hybrids were synthesized using ring-opening living polymerization. The competitive hydrogen bonding interactions between PDDSQ and EC determined the properties of the blends. After removing the EC template, mesoporous phenolic/DDSQ hybrids with high surface areas and pore volumes were obtained, with the structure and properties depending on the molecular weight of the PCL block and the content of the PPDSQ hybrid.
Article
Chemistry, Applied
Shuang Lu, Kai Na, Jiani Wei, Ting Tao, Li Zhang, Ying Fang, Xiangyu Li, Xiaohua Guo
Summary: Alginate oligosaccharides have different effects on health and gut microbiota depending on their monomer sequences. Oligomannuronate had the most significant impact on colitis and gut barrier function, while oligoguluronate and heterogeneous AOS were less effective. Oligomannuronate also increased the abundance and diversity of gut microbiota, and FMT from oligomannuronate-treated mice showed potential in colitis bacteriotherapy.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Multidisciplinary
Carlos Soloaga Ardiles, Cristian Castro Rodriguez
Summary: The study investigated the interaction between alginate and Cu2+, Mn2+, Ca2+ and Mg2+ cations using density functional theory. Results showed that the type of bonds formed between the polymer and metals varied, with Cu2+ and Mn2+ forming highly polarized covalent bonds, while Ca2+ and Mg2+ form electrostatic bonds. However, the study concluded that there was no correlation between alginate affinity for divalent cations and the strength of interactions between these metals and the polymer.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Neurosciences
Ruihan Yang, Yina Ma, Bao-Bao Pan, Meghana A. Bhatt, Terry Lohrenz, Hua-Guang Gu, Jonathan W. Kanen, Colin F. Camerer, P. Read Montague, Qiang Luo
Summary: Information exchange between brain regions is crucial for understanding social decision-making, but its dynamic nature is often overlooked. This study used a multi-round bargaining game to identify switches between different bargaining strategies in healthy participants and proposed a novel model of dynamic effective connectivity to estimate information flow between key brain regions. The findings suggest that dynamic reconfiguration of the interaction between brain regions supports dynamic bargaining strategies during competitive social interactions.
Article
Chemistry, Analytical
Sidra Rashid, Mian Hasnain Nawaz, Ihtesham ur Rehman, Akhtar Hayat, Jean Loius Marty
Summary: MUC-1 is associated with various epithelia and a direct competitive electrochemical immunosensor was designed for early breast cancer diagnosis. The gelatin modified electrode immobilized anti-MUC-1, while electro-active carbon nanotubes were used for quantitative measurement. The immunosensor showed high recovery values for human serum sample analysis, indicating its practical applicability.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Yu-jie Meng, Shan-shuai Chen, Chao-bing Luo, Ying-jie Song, Zi-wei Xiong, Jun Li, De-qiang Li
Summary: In this study, C-TiO2/CaCO3 nanocomposites were prepared using a one-pot method, which exhibited synergistic adsorption-photodegradation performance. The precursor was formed through a competitive coordination strategy and further carbonized to enhance the adsorption capacity. The nanocomposites showed excellent photocatalytic activity under simulated sunlight, achieving a degradation ratio of 96.46% for methylene blue.
APPLIED SURFACE SCIENCE
(2022)
Article
Polymer Science
Daru Seto Bagus Anugrah, Laura Virdy Darmalim, Muhammad Rifky Irwanto Polanen, Permono Adi Putro, Nurwarrohman Andre Sasongko, Parsaoran Siahaan, Zeno Rizqi Ramadhan
Summary: This paper uses computational analysis to study the interactions between alginate dimers and water molecules. The results show that both alginate and sodium alginate molecules form hydrogen bonds and Van der Walls interactions with water molecules, and there is also a metal-nonmetal bond between sodium alginate and water molecules. The computational data demonstrate that the interactions between alginate dimers and water molecules contribute to the stability of the complex structure.
Article
Chemistry, Applied
Saeid Vakilian, Fatemeh Jamshidi-adegani, Afra Al Yahmadi, Mohammed Al-Broumi, Najeeb Ur Rehman, Muhammad U. Anwar, Khurshid Alam, Nasar Al-Wahaibi, Asem Shalaby, Sausan Alyaqoobi, Ahmed Al-Harrasi, Kamal Mustafa, Sulaiman Al-Hashmi
Summary: The study evaluated a bioactive multilayer wound dressing based on chitosan and alginate, loaded with Dracaena Cinnabari and Aloe Vera. Results showed excellent biocompatibility and wound healing effects, suggesting the dressing could be a supportive option for wound care.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Applied
Daiki Murayama, Scott A. Rankin, Shinya Ikeda
Summary: The covalently linked protein-polysaccharide conjugate has enhanced resistance to competitive displacement, with alkali-extracted potato pectin providing greater resistance. This plays a significant role in stabilizing oil-in-water emulsions.
FOOD HYDROCOLLOIDS
(2021)
Article
Biochemistry & Molecular Biology
Siraprapa Boobphahom, Nadnudda Rodthongkum
Summary: A Pyrocatechol violet/copper ion-graphene oxide/alginate (PV/Cu2+-GO/Alg) hydrogel was fabricated as a colorimetric sensor for monitoring urinary cysteine. The hydrogel sensor showed a linear range and detection limit for cysteine, without interference in urine. Additionally, the sensor was applied for the early diagnosis of Alzheimer's disease and integrated into diapers as a wearable sensor.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Physics, Fluids & Plasmas
Violeta Calleja-Solanas, Nagi Khalil, Jesus Gomez-Gardenes, Emilio Hernandez-Garcia, Sandro Meloni
Summary: The remarkable biodiversity in large ecosystems is a major open question in science that attracts attention from various fields. This study focuses on the challenging task of modeling the stable coexistence of species competing for limited resources. It identifies locality in interactions as a simple mechanism that can lead to stable species coexistence.
Article
Chemistry, Multidisciplinary
Alex Dunlop, Kate Bowman, Olav Aarstad, Gudmund Skjak-Braek, Bjorn T. Stokke, Andrew N. Round
Article
Multidisciplinary Sciences
Soosan Hadjialirezaei, Gianfranco Picco, Richard Beatson, Joy Burchell, Bjorn Torger Stokke, Marit Sletmoen
Article
Multidisciplinary Sciences
Zaixing Jiang, Shuai Zhang, Lasse Hyldgaard Klausen, Jie Song, Qiang Li, Zegao Wang, Bjorn Torger Stokke, Yudong Huang, Flemming Besenbacher, Lars Peter Nielsen, Mingdong Dong
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2018)
Article
Polymer Science
Pezhman Mohammadi, Gregory Beaune, Bjorn Torger Stokke, Jaakko V. I. Timonen, Markus B. Linder
Article
Chemistry, Multidisciplinary
Trinh Bich Hoang, Bjorn Torger Stokke, Ulrik Hanke, Agne Johannessen, Erik Andrew Johannessen
APPLIED SCIENCES-BASEL
(2019)
Review
Polymer Science
Corinna Dannert, Bjorn Torger Stokke, Rita S. Dias
Article
Polymer Science
Eleonora Parelius Jonasova, Bjorn Torger Stokke
Article
Chemistry, Analytical
Nina Bjork Arnfinnsdottir, Cole A. Chapman, Ryan C. Bailey, Astrid Aksnes, Bjorn Torger Stokke
Article
Chemistry, Analytical
Ingrid H. Oevreeide, Andreas Zoellner, Bjorn T. Stokke
Summary: Functionalized sensor surfaces integrated with microfluidic channels are increasingly crucial for efficient biosensing devices, especially for small sample volumes. By incorporating novel double curved passive mixing structures (DCMS), the performance of the devices can be significantly improved by enhancing analyte mass transfer. The study revealed that DCMS is a high-performing passive micromixer with a wide range of mixing index values, although the sensitivity to geometric parameter values requires careful selection for optimal mixing efficiency.
Article
Chemistry, Analytical
Natasa Zurzul, Bjorn Torger Stokke
Summary: The study presents a potassium sensor based on DNA-aptamer functionalized hydrogel, capable of continuous label-free monitoring of potassium ions with high selectivity in an artificial blood buffer environment.
Article
Biochemistry & Molecular Biology
Renata Szydlak, Ingrid H. Ovreeide, Marcin Luty, Tomasz Zielinski, Victorien E. Prot, Joanna Zemla, Bjorn T. Stokke, Malgorzata Lekka
Summary: The aberrant expression of glycans in various cancers, including urothelial ones, has been studied. Researchers have developed a quantitative approach to study glycan-lectin interactions in cells. They found that the adhesion of urothelial cells to specific lectins was specific and selective. These findings suggest potential applications in developing lectin-based biosensors for diagnostic purposes and drug delivery targeting cancer-associated glycans.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Polymer Science
Ingrid Haga Oevreeide, Renata Szydlak, Marcin Luty, Husnain Ahmed, Victorien Prot, Bjorn Helge Skallerud, Joanna Zemla, Malgorzata Lekka, Bjorn Torger Stokke
Summary: Aqueous microgels are unique entities of soft matter with mechanical signatures that can be distinct from their macroscopic counterparts. Experimental strategies and tools are being explored to provide detailed nanoscopic mechanical characterization of microgels, offering insights into their properties for fundamental research and various applications.
Article
Polymer Science
Natasa Zurzul, Arne Ilseng, Victorien E. Prot, Hrafn M. Sveinsson, Bjorn H. Skallerud, Bjorn T. Stokke
Article
Biochemistry & Molecular Biology
Marit Sletmoen, Thomas A. Gerken, Bjorn T. Stokke, Joy Burchell, C. Fred Brewer
Meeting Abstract
Biochemistry & Molecular Biology
Marit Sletmoen, Thomas A. Gerken, Bjorn T. Stokke, Joy Burchell, Fred Brewer
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.