Article
Chemistry, Multidisciplinary
Kumiko Yoshihara, Noriyuki Nagaoka, Yoji Makita, Yasuhiro Yoshida, Bart Van Meerbeek
Summary: To prevent secondary caries, researchers incorporated CPC-Mont into PMMA resin cement and found that 8% and 10% concentrations of CPC-Mont could maintain the mechanical properties of the cement while possessing antibacterial potential.
Article
Biology
Min Lu, Yongli Li, Mei X. Wu
Summary: Multidrug-resistant bacteria pose a significant threat and are depleting treatment options. This study explores the combination of blue-laser and thymol to eradicate these bacteria, successfully preventing systematic dissemination in mice. The strategy leverages the unique properties of bacteria to transform harmless thymol into a powerful sterilizer when activated by blue-laser excitation.
COMMUNICATIONS BIOLOGY
(2021)
Article
Microbiology
Laura J. Dunphy, Kassandra L. Grimes, Nishikant Wase, Glynis L. Kolling, Jason A. Papin
Summary: In a synthetic cystic fibrosis media, distinct species-specific metabolic signatures were revealed for Pseudomonas aeruginosa and Staphylococcus aureus, indicating potential nutrient competition's impact on community dynamics. Both bacteria consumed similar nutrients, suggesting metabolic competition's role in coinfection dynamics. Furthermore, unique metabolites produced by each species may serve as species-specific biomarkers for cystic fibrosis lung infections.
Article
Critical Care Medicine
Anthony J. Fischer, Sachinkumar B. Singh, Mason M. LaMarche, Lucas J. Maakestad, Zoe E. Kienenberger, Tahuanty A. Pena, David A. Stoltz, Dominique H. Limoli
Summary: Staphylococcus aureus and Pseudomonas aeruginosa are both abundant in sputum cultures of cystic fibrosis patients. Contrary to common assumption, there is no rapid replacement of S. aureus by P. aeruginosa. Many CF patients have long-term coinfection with these organisms.
AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE
(2021)
Article
Immunology
Wusheng Deng, Yanmei Lei, Xiujia Tang, Dingbin Li, Jinhua Liang, Jing Luo, Liuyuan Liu, Wenshu Zhang, Liumei Ye, Jinliang Kong, Ke Wang, Zhaoyan Chen
Summary: This study investigated whether DNase I can inhibit the early formation of biofilms in Pseudomonas aeruginosa- or Staphylococcus aureus-induced empyema models. The results showed that DNase I significantly inhibited early biofilm formation in a dose-dependent manner, without affecting bacterial growth. Therefore, DNase I has therapeutic potential against empyema biofilms.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Review
Immunology
Lalitha Biswas, Friedrich Goetz
Summary: Cystic fibrosis is a genetic disorder characterized by recurrent lung infections caused by Staphylococcus aureus and Pseudomonas aeruginosa. The interactions between these pathogens play a significant role in their survival, antibiotic resistance, and disease progression. Understanding these interactions is crucial for the treatment and prevention of cystic fibrosis.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Article
Environmental Sciences
Alexander Nti Kani, Evans Dovi, Aaron Albert Aryee, Runping Han, Lingbo Qu
Summary: TNR-CPC derived from tiger nut residue showed excellent performance in removing 2,4-D and inhibiting bacterial growth.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Multidisciplinary Sciences
Leda G. Bousiakou, Rabia Qindeel, Omar M. Al-Dossary, Helen Kalkani
Summary: Graphene oxide (GO) has antibacterial properties against both Gram-positive and Gram-negative bacteria. This study prepared GO sheets with different oxygen concentrations and evaluated their antimicrobial efficacy against clinical isolates. The results showed that Gram-positive bacteria were more sensitive to GO and higher oxygen content in GO enhanced its antibacterial activity.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2022)
Article
Biology
Camryn Pajon, Marla C. Fortoul, Gabriela Diaz-Tang, Estefania Marin Meneses, Ariane R. Kalifa, Elinor Sevy, Taniya Mariah, Brandon Toscan, Maili Marcelin, Daniella M. Hernandez, Melissa M. Marzouk, Allison J. Lopatkin, Omar Tonsi Eldakar, Robert P. Smith
Summary: Most bacteria exist and interact within polymicrobial communities, producing unique compounds, increasing virulence, and enhancing antibiotic resistance. This study demonstrates that changes in the growth environment can determine the final population composition of bacteria, highlighting the importance of considering the growth environment in understanding bacterial coexistence. The researchers also found that altering the carbon source in the growth media impacts the absolute growth of bacterial species and their dominance in co-culture. Furthermore, perturbing the spatial structure in the community can affect the relationship between growth and population composition.
Article
Microbiology
Eryn E. Bernardy, Vishnu Raghuram, Joanna B. Goldberg
Summary: The interaction between Staphylococcus aureus and Pseudomonas aeruginosa in the lungs of cystic fibrosis patients is key to understanding the severity of respiratory infections. The survival of S. aureus is significantly higher when coinfected with P. aeruginosa, suggesting that interactions between these two bacteria promote coexistence in the CF lung environment.
MICROBIOLOGY SPECTRUM
(2022)
Article
Microbiology
Sylvie Letoffe, Yongzheng Wu, Sophie E. Darch, Christophe Beloin, Marvin Whiteley, Lhousseine Touqui, Jean-Marc Ghigo
Summary: This study demonstrates that hydrogen cyanide (HCN) released by Pseudomonas aeruginosa inhibits the growth of Staphylococcus aureus, particularly in low-oxygen environments. These findings are significant for understanding infectious diseases like cystic fibrosis in polymicrobial communities.
Article
Dentistry, Oral Surgery & Medicine
Yuya Yamamoto, Kumiko Yoshihara, Noriyuki Nagaoka, Bart Van Meerbeek, Yasuhiro Yoshida
Summary: This study evaluated the mechanical properties, bonding performance, and anti-microbial activity of a novel composite cement containing CPC-Mont. The results showed that loading the composite cement with 7 μm CPC-Mont at concentrations of 5-7.5 wt% achieved continuous anti-biofilm activity while maintaining mechanical strength and bonding performance.
Article
Microbiology
Ines Reigada, Paola San-Martin-Galindo, Shella Gilbert-Girard, Jacopo Chiaro, Vincenzo Cerullo, Kirsi Savijoki, Tuula A. Nyman, Adyary Fallarero, Ilkka Miettinen
Summary: When two clinically relevant bacterial pathogens, Staphylococcus aureus and Pseudomonas aeruginosa, co-culture in a biofilm, P. aeruginosa shows higher motility and lower pigment production, while S. aureus exhibits increased persistence due to lower abundances of proteins related to cell wall biosynthesis and cell division. Both species also display higher antimicrobial tolerance when co-cultured. This study provides insights into the dynamics of both the surfaceome and exoproteome of the dual-species biofilms.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Xiao-jing Ma, Tong Wang, Hui-min Zhang, Jun-qian Shao, Mei Jiang, Huai Wang, Hui-xia Zhu, Dong Zhou
Summary: This study investigated the antibacterial effects and mechanisms of lactonic sophorolipid (LSL) on pathogenic bacteria and found that LSL had the best inhibitory effect against Staphylococcus aureus, followed by Pseudomonas aeruginosa. The study also provided a better understanding of the relationship between LSL and different bacterial cell structures, suggesting that LSL may be used for targeted treatment of special pathogens.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Maryam Akbari, Majid Nejati, Abdoulhossein Davoodabadi, Esmaeel Abdolrahim Kashi, Ali Nazari Alam, Ali Sobhani Nasab
Summary: The research presents the preparation of terbium vanadate-silver peroxide (TbVO4-AgO) nanostructures using glucose as the capping agent. The antibacterial properties of TbVO4-AgO nanostructures against Pseudomonas aeruginosa and Staphylococcus aureus were investigated. Furthermore, ointment containing TbVO4-AgO nanostructures showed significant reduction in wound area in animal tests.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Saadet Yapar, Gunseli Ozdemir, Alejandra M. Fernandez Solarte, Rosa M. Torres Sanchez
CLAYS AND CLAY MINERALS
(2015)
Article
Chemistry, Physical
Guenseli Ozdemir, Mine Hosgoer Limoncu, Saadet Yapar
APPLIED CLAY SCIENCE
(2010)
Article
Engineering, Environmental
Gunseli Ozdemir, Saadet Yapar
JOURNAL OF HAZARDOUS MATERIALS
(2009)
Article
Biophysics
Gunseli Ozdemir, Saadet Yapar
COLLOIDS AND SURFACES B-BIOINTERFACES
(2020)
Article
Chemistry, Physical
Asli Sahiner, Gunseli Ozdemir, T. Hakan Bulut, Saadet Yapar
Summary: The direct application of heavy metal- and quaternary ammonium-based antibacterial agents can cause inconvenience and environmental concerns. This study immobilized these agents on montmorillonite to enhance their antibacterial activity and reduce the negative effects. The results showed that a linear alkyl chain and a double aromatic ring structure had the greatest antibacterial effect, making them promising candidates for biomedical applications.
CLAYS AND CLAY MINERALS
(2022)
Article
Engineering, Chemical
Onur Uzunkavak, Maria Silvina Patterer, Franco Medici, Gunseli Ozdemir
DESALINATION AND WATER TREATMENT
(2019)
Article
Chemistry, Physical
Saadet Yapar, Mustafa Ates, Gunseli Ozdemir
APPLIED CLAY SCIENCE
(2017)
Article
Engineering, Chemical
Etelka David, Marius Sebastian Secula, Gunseli Ozdemir, Ioan Mamaliga
DESALINATION AND WATER TREATMENT
(2017)
Article
Biophysics
G. Ozdemir, O. E. Sezgin
COLLOIDS AND SURFACES B-BIOINTERFACES
(2006)
Article
Biophysics
G Özdemir, U Malayoglu
COLLOIDS AND SURFACES B-BIOINTERFACES
(2004)
Article
Biophysics
SS Helvaci, S Peker, G Özdemir
COLLOIDS AND SURFACES B-BIOINTERFACES
(2004)
Article
Chemistry, Physical
G Özdemir, S Peker, SS Helvaci
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2004)
Article
Chemistry, Multidisciplinary
S Peker, S Helvaci, G Özdemir
Article
Biophysics
R Cohen, G Ozdemir, D Exerowa
COLLOIDS AND SURFACES B-BIOINTERFACES
(2003)
Article
Chemistry, Physical
Nadine J. Kanik, Artur Kuligiewicz, Jeffrey T. Cullen
Summary: This study examined the effects of different pre-treatments on the structural H-isotope composition of clay minerals. The results showed that different pre-treatments had varied impacts on different clay minerals, and the choice of pre-treatment should be based on the specific properties and mineralogy of the samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Lorenzo Lisuzzo, Giuseppe Cavallaro, Stefana Milioto, Giuseppe Lazzara
Summary: This study proposes Pickering emulsions based on wax and halloysite clay nanotubes for coating silk sutures to increase their loading capacity towards eosin. The presence of halloysite/wax microspheres on the surface of silk sutures has also been explored for controlled release of hydrophobic drugs. The influence of the coating on the thermal and mechanical properties of the sutures has been studied using various techniques. In conclusion, the wax/halloysite Pickering emulsions can successfully generate hydrophobic microdomains on the surface of silk sutures, leading to enhanced flexibility and improved loading capacity towards eosin.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Bruna F. Alves, Rita C. P. Nunes, Luiz C. Bertolino, Elizabete F. Lucas
Summary: Operational problems in the oil industry caused by the precipitation of paraffins can be prevented by using polymeric additives. This article evaluates the use of polymeric nanocomposites as pour point reducers in different types of crude oil and finds that they are more efficient than pure poly(ethylene-covinyl acetate) (EVA) in reducing the pour point. The nanocomposites also modify the wax crystals and reduce the viscosity of the oil samples.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
K. A. Daniels, C. C. Graham, A. C. Wiseall, J. F. Harrington, P. Sellin
Summary: Geological storage with clay buffer is widely preferred for removing hazardous radioactive waste. The impact of fluid salinity and void space on the swelling behavior of barrier bentonites was examined through experiments. The findings suggest that clay swelling is suppressed at higher salinities, which affects the void-filling process.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
N. Werling, A. Kuligiewicz, A. Steudel, R. Schuhmann, F. Dehn, K. Emmerich
Summary: Thermal treatment of clay minerals can be used to produce building materials and environmentally friendly binders. This process involves dehydration, dehydroxylation, breakdown of structure, and recrystallization of high temperature phases. Rehydration and rehydroxylation are important factors to consider for geopolymers and SCM.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Xuan Wang, Hao Ding, Zhuoqun Xu, Jianmeng Zhang, Yanbin Yao
Summary: Rutile nano-TiO2 was loaded onto the surface of sericite to prepare sericite-rutile composite particles, which were then modified with HDTMS and sprayed onto the substrates to form sericite-rutile/HDTMS composite coatings with UV shielding and superhydrophobic self-cleaning properties. The coating exhibited good UV shielding rate and remained superhydrophobic after UV irradiation. The hierarchical structure of the sericite-rutile composite and the low surface energy of HDTMS contributed to the superhydrophobicity and UV shielding effect of the coating.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Kailang Sun, Taojun Zhang, Jie Zhou, Yonghong Liu, Minfeng Zeng, Zhen Yang, Ruokun Feng, Xiaorong Ren, Peng Zhang, Baoyi Wang, Xingzhong Cao
Summary: Chitosan-Pd0 nano particles encapsulated in Al, Co-pillared montmorillonite nanocomposites were successfully synthesized using a facile one-pot heat treatment method. The Al, Co pillaring effectively expanded the surface area and generated numerous mesopores in the interlayer space of the MMt. The resultant nanocomposite exhibited similar high comprehensive catalytic performances as the one prepared by the regular divided-multistep method. The encapsulation of CS chains and doping of Co in the Al pillaring also contributed to the improved catalytic performance.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Nathalie Fagel, Isabel Israde-Alcantara, Reza Safaierad, Marttiina Rantala, Sabine Schmidt, Gilles Lepoint, Pierre Pellenard, Nadine Mattielli, Sarah Metcalfe
Summary: Environmental conditions significantly influence clay minerals, and studying clay sediments in tropical lakes can provide valuable insights into past environmental conditions. In this study, multiproxy records from sediment cores of three crater lakes in central Mexico were analyzed. The results showed that disordered kaolinite, formed through hydrolysis and hydrothermal alteration, was the predominant mineral in the sediments. The abundance of kaolinite varied in relation to organic carbon and organic matter-related elements, and showed opposite trends with lithogenic elements. Geochemical data suggested that the increase in kaolinite abundance is linked to the formation of organo-mineral aggregates and lake level changes in closed basins.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
M. J. Martin-Alfonso, A. Mejia, F. J. Martinez-Boza, P. Partal
Summary: The drilling industry is facing new challenges to develop eco-friendlier drilling fluids. Organic modified sepiolite dispersed in oil can be an excellent additive with suitable rheological properties. This study investigated the effect of alkyl ammonium modifiers on the microstructure and rheological properties of sepiolite-vegetable oil dispersions under high-temperature and high-pressure conditions.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Weiquan Zhan, Siyuan Yang, Shenxu Bao, Liuyi Ren, Cheng Liu
Summary: The interaction between talc and the depressor CMC was investigated through molecular dynamics simulation and density functional theory calculation. It was found that CMC showed stronger adsorption on the edge plane of talc due to enhanced interactions with polar groups and water molecules. The study also revealed specific interactions between H atoms in CMC and O atoms in the edge plane, as well as between O atoms in CMC and Si, Mg atoms in the edge plane. Hydration shells on the basal and edge planes of talc were examined to explain the phenomenon.
APPLIED CLAY SCIENCE
(2024)
Article
Chemistry, Physical
Pierre Dramou, Yiyang Sun, Xu Ni, Fangqi Wang, Hua He
Summary: In this study, a magnetic nanocomposite was prepared and used for the separation of rutin from real samples through magnetic solid phase extraction (MSPE). The nanocomposite exhibited high specific surface area, chemical and thermal stability, water solubility, and easy separation in aqueous solution. Characterization and experiments confirmed the successful synthesis and efficient enrichment ability of the nanocomposite.
APPLIED CLAY SCIENCE
(2024)
