Article
Microbiology
Shintaro Eshima, Sanae Kurakado, Yasuhiko Matsumoto, Takayuki Kudo, Takashi Sugita
Summary: This study evaluated the impact of Candida albicans on the antibacterial tolerance of Escherichia coli and explored the underlying mechanisms. The results showed that the culture supernatant of Candida induced antibacterial tolerance in E. coli biofilms. Further investigation is needed to identify the specific mechanisms and molecules involved. These findings have implications for the development of treatments for dual-species biofilm infections.
Article
Engineering, Environmental
Payam Arabkhani, Nahid Saeedi, Hossein Sadeghi, Sadegh Nouripour-Sisakht, Maral Gharaghani, Arash Asfaram
Summary: In this study, a novel biosynthesis method for the preparation of zinc oxide/carbon nanofiber nanocomposite (ZnO-CNFs) was proposed and their photocatalytic and antimicrobial properties were evaluated for wastewater treatment. The synthesized ZnO-CNFs showed high photodegradation efficiency of tetracycline antibiotic residues and superior antibacterial and antifungal activity compared to ZnO nanoparticles. These findings indicate that ZnO-CNFTD exhibits excellent photocatalytic and antimicrobial potential and can be a promising candidate for effective treatment of water contaminated with microorganisms and organic compounds.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Veterinary Sciences
Dorota Chrobak-Chmiel, Ewelina Kwiecien, Anna Golke, Beata Dolka, Krzysztof Adamczyk, Malgorzata J. Bieganska, Marina Spinu, Marian Binek, Magdalena Rzewuska
Summary: The study reveals that pigeons can carry multidrug-resistant pathogens, including antibiotic-resistant Staphylococcus aureus, Escherichia coli, and Candida albicans. Further data is needed to understand how pigeons acquire highly resistant strains.
FRONTIERS IN VETERINARY SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Betul Yilmaz Ozturk, Bukay Yenice Gursu, Ilknur Dag
Summary: This study investigated the effects of farnesol on biofilms of Candida albicans and Escherichia coli, showing that farnesol significantly reduced metabolic activity and preformed biofilm formation. It also had a stronger effect on dual-species biofilms compared to commonly used antifungal and antibacterial drugs.
Article
Chemistry, Applied
Peng Dong, Qingshan Shi, Ruqun Peng, Yingzi Yuan, Xiaobao Xie
Summary: By modifying chitosan oligosaccharide (COS) with the Eschweiler-Clarke reaction, a derivative called DMCOS was synthesized. Analysis revealed that DMCOS had converted primary amines into tertiary amines after methylation. DMCOS showed less thermal stability than COS, but exhibited stronger antimicrobial activity against bacterial and yeast strains, while also displaying lower antioxidant activity and causing mitochondrial damage in C. albicans cells.
CARBOHYDRATE POLYMERS
(2023)
Article
Microbiology
Yasmine Rebai, Lysett Wagner, Mayssa Gnaien, Merle L. Hammer, Mario Kapitan, Maria Joanna Niemiec, Wael Mami, Amor Mosbah, Erij Messadi, Helmi Mardassi, Slavena Vylkova, Ilse D. Jacobsen, Sadri Znaidi
Summary: In this study, it was found that the probiotic strain Escherichia coli Nissle 1917 (EcN) can inhibit the growth of C. albicans and prevent its damage to intestinal cells. Through co-culture experiments and cell culture models, it was demonstrated that EcN can reduce the abundance of C. albicans and protect enterocytes from damage. This suggests that EcN may be a potential therapeutic approach against C. albicans infections.
Article
Polymer Science
Mahsa Nekooei-Fard, Reza Jahanmardi, Reza Fazaeli, Nakisa Sohrabi-Haghdoost
Summary: This study aimed to improve the antimicrobial performance of the ethylene-vinyl acetate (EVA) resin by incorporating Mobil 22 zeolite loaded with silver, copper, and zinc salts. The addition of these zeolite particles enhanced the Young's modulus and tensile strength of the polymer while decreasing its elongation at break. The film samples containing either silver-loaded zeolite or copper/zinc-doped zeolite showed the highest antimicrobial activity against Escherichia coli, Staphylococcus aureus, and Candida albicans.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Microbiology
Alejandro Huerta-Saquero, Itziar Chapartegui-Gonzalez, Sarah Bowser, Nittaya Khakhum, Jacob L. Stockton, Alfredo G. Torres
Summary: This study demonstrates the potential of using P22 viral-like particles as nanocontainers for delivering immunogenic proteins of enterohemorrhagic Escherichia coli (EHEC) and creating effective vaccines against EHEC infections. The EscC-P22 particles were able to induce specific antibodies in mice, enhance phagocytic activity against EHEC, and reduce bacterial adherence to epithelial cells, indicating their functionality. These findings suggest that EscC-P22-based particles could be a promising nanovaccine candidate for immunization against EHEC O157:H7 infections.
MICROBIOLOGY SPECTRUM
(2023)
Article
Microbiology
Lang Peng, Rexford Mawunyo Dumevi, Marco Chitto, Nadja Haarmann, Petya Berger, Gerald Koudelka, Herbert Schmidt, Alexander Mellmann, Ulrich Dobrindt, Michael Berger
Summary: This study proposes a new method for genetic manipulation of enterohemorrhagic Escherichia coli (EHEC) that is more efficient than traditional methods. The method increases recombineering efficiency by 3-4 times in EHEC O157:H7 EDL933 Delta stx1/2, but shows similar efficiency in Escherichia coli K-12 MG1655. Additionally, the study suggests that the inhibition of the RecFOR pathway indirectly blocks phage induction and improves recombineering efficiency.
Article
Microbiology
Bin Liu, Chengqian Qian, Pan Wu, Xiaodan Li, Yutao Liu, Huiqian Mu, Min Huang, Yang Zhang, Tianyuan Jia, Yuanyuan Wang, Lu Wang, Xiao Zhang, Di Huang, Bin Yang, Lu Feng, Lei Wang
Summary: Enterohemorrhagic Escherichia coli regulates its cell wall structure during infection, balancing survival in the intestinal lumen and infection of intestinal epithelial cells. The bacteria express long-chain OAg in the intestinal lumen for increased resistance to antimicrobial peptides, but reduce OAg chain length upon sensing epithelial cell attachment, leading to enhanced injection of T3SS effectors into epithelial cells for host cell infection. This regulatory mechanism may be widespread in pathogenic bacteria and closely related to bacterial pathogenesis.
Article
Microbiology
Gordon Williamson, Ana Sofia Brito, Adriana Bizior, Giulia Tamburrino, Gaetan Dias Mirandela, Thomas Harris, Paul A. Hoskisson, Ulrich Zachariae, Anna Maria Marini, Melanie Boeckstaens, Arnaud Javelle
Summary: Fungal infections pose a significant threat to human health and crop yields. This study reveals that variations in the Twin-His motif of Amt-Mep-Rh transporters trigger a mechanistic switch from a specific transporter to an unspecific ion channel. These findings support a transport mechanism-driven signaling process in fungal filamentation induction.
Article
Chemistry, Multidisciplinary
Jurgita Svediene, Vitalij Novickij, Rokas Zalneravicius, Vita Raudoniene, Svetlana Markovskaja, Jurij Novickij, Algimantas Paskevicius
Summary: This study reports for the first time the possibility of using L-lysine and poly-L-lysine as additives with pulsed electric fields for antimicrobial treatment. The combination of Lys and PLL with PEF was found to be most effective with 100 μs pulses for all microorganisms. Different treatment susceptibility patterns of microorganisms were observed, with Gram-negative E. coli being the most treatment-resistant. Despite this, inactivation rates exceeding 2 log viability reduction were achieved for all analyzed yeast, fungi, and bacteria, showing potential for new treatment development for drug-resistant microorganisms.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Chemical
Jing-Hua Tzeng, Chih-Huang Weng, Li-Ting Yen, Gulomjon Gaybullaev, Che-Jui Chang, Mark Daniel G. de Luna, Yao-Tung Lin
Summary: This study compared the photocatalytic performance of nano-sized nitrogen-doped titanium oxide (N-TiO2) and tourmaline-nitrogen-co-doped titanium oxide (T-N-TiO2) for inactivation of pathogens under visible light irradiation, using Staphylococcus aureus as a model pathogen. The results showed that the photocatalyst dosage, initial microbial concentration, and visible light intensity are key factors affecting the photocatalytic inactivation process for both photocatalysts. Additionally, T-N-TiO2 exhibited better inactivation efficiency for various pathogens compared to N-TiO2.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Gastroenterology & Hepatology
Lingyan Jiang, Wen Yang, Xinlei Jiang, Ting Yao, Lu Wang, Bin Yang
Summary: EHEC O157 carries 177 unique genomic islands, termed O islands, which play a crucial role in its pathogenicity by providing virulence factors, effectors, and regulatory proteins.
Article
Materials Science, Coatings & Films
F. S. da Silva, A. C. A. de Paula e Silva, P. A. Barbugli, N. Cinca, S. Dosta, I. G. Cano, J. M. Guilemany, C. E. Vergani, A. Benedetti
Summary: In this study, the cold gas spray (CGS) technique was used to produce copper surfaces with anti-biofilm and biocompatibility properties. The physical characteristics of the copper coating, antimicrobial effects against various strains, and biocompatibility with human monocytes were investigated. Results showed that the copper coatings effectively inhibited the adhesion and viability of bacteria and fungi, while maintaining a high cell viability rate and similar cell labeling as standard culture conditions.
SURFACE & COATINGS TECHNOLOGY
(2021)
