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REVIEW
Kaitlyn A Moore, Alyssa P Petersen, Hannah C Zierden
Extracellular vesicles (EVs) are cell-derived nanoparticles that carry small molecules, nucleic acids, and proteins long distances in the body facilitating cell-cell communication. Microorganism-derived EVs mediate communication between parent cells and host cells, with recent evidence supporting their role in biofilm formation, horizontal gene transfer, and suppression of the host immune system. As lipid-bound bacterial byproducts, EVs demonstrate improved cellular uptake and distribution in vivo compared to cell-free nucleic acids, proteins, or small molecules, allowing these biological nanoparticles to recapitulate the effects of parent cells and contribute to a range of human health outcomes...
April 4, 2024: Nanoscale
#22
REVIEW
Mette Rose Jørgensen
Oral candidiasis (OC), a prevalent opportunistic infection of the oral mucosa, presents a considerable health challenge, particularly in individuals with compromised immune responses, advanced age, and local predisposing conditions. A considerable part of the population carries Candida in the oral cavity, but only few develop OC. Therefore, the pathogenesis of OC may depend on factors other than the attributes of the fungus, such as host factors and other predisposing factors. Mucosal trauma and inflammation compromise epithelial integrity, fostering a conducive environment for fungal invasion...
April 4, 2024: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
#23
JOURNAL ARTICLE
P W Crous, E R Osieck, R G Shivas, Y P Tan, S L Bishop-Hurley, F Esteve-Raventós, E Larsson, J J Luangsa-Ard, F Pancorbo, S Balashov, I G Baseia, T Boekhout, S Chandranayaka, D A Cowan, R H S F Cruz, P Czachura, S De la Peña-Lastra, F Dovana, B Drury, J Fell, A Flakus, R Fotedar, Ž Jurjević, A Kolecka, J Mack, G Maggs-Kölling, S Mahadevakumar, A Mateos, S Mongkolsamrit, W Noisripoom, M Plaza, D P Overy, M Piątek, M Sandoval-Denis, J Vauras, M J Wingfield, S E Abell, A Ahmadpour, A Akulov, F Alavi, Z Alavi, A Altés, P Alvarado, G Anand, N Ashtekar, B Assyov, G Banc-Prandi, K D Barbosa, G G Barreto, J-M Bellanger, J L Bezerra, D J Bhat, P Bilański, T Bose, F Bozok, J Chaves, D H Costa-Rezende, C Danteswari, V Darmostuk, G Delgado, S Denman, A Eichmeier, J Etayo, G Eyssartier, S Faulwetter, K G G Ganga, Y Ghosta, J Goh, J S Góis, D Gramaje, L Granit, M Groenewald, G Gulden, L F P Gusmão, A Hammerbacher, Z Heidarian, N Hywel-Jones, R Jankowiak, M Kaliyaperumal, O Kaygusuz, K Kezo, A Khonsanit, S Kumar, C H Kuo, T Læssøe, K P D Latha, M Loizides, S M Luo, J G Maciá-Vicente, P Manimohan, P A S Marbach, P Marinho, T S Marney, G Marques, M P Martín, A N Miller, F Mondello, G Moreno, K T Mufeeda, H Y Mun, T Nau, T Nkomo, A Okrasińska, J P A F Oliveira, R L Oliveira, D A Ortiz, J Pawłowska, M À Pérez-De-Gregorio, A R Podile, A Portugal, N Privitera, K C Rajeshkumar, I Rauf, B Rian, A Rigueiro-Rodríguez, G F Rivas-Torres, P Rodriguez-Flakus, M Romero-Gordillo, I Saar, M Saba, C D Santos, P V S R N Sarma, J L Siquier, S Sleiman, M Spetik, K R Sridhar, M Stryjak-Bogacka, K Szczepańska, H Taşkın, D S Tennakoon, D Thanakitpipattana, J Trovão, I Türkekul, A L van Iperen, P van 't Hof, G Vasquez, C M Visagie, B D Wingfield, P T W Wong, W X Yang, M Yarar, O Yarden, N Yilmaz, N Zhang, Y N Zhu, J Z Groenewald
Novel species of fungi described in this study include those from various countries as follows: Australia , Aschersonia mackerrasiae on whitefly, Cladosporium corticola on bark of Melaleuca quinquenervia , Penicillium nudgee from soil under Melaleuca quinquenervia , Pseudocercospora blackwoodiae on leaf spot of Persoonia falcata , and Pseudocercospora dalyelliae on leaf spot of Senna alata . Bolivia , Aspicilia lutzoniana on fully submersed siliceous schist in high-mountain streams, and Niesslia parviseta on the lower part and apothecial discs of Erioderma barbellatum on a twig...
June 2023: Persoonia
#24
Raju Shivarathri, Manju Chauhan, Abhishek Datta, Diprasom Das, Adela Karuli, Sabrina Jenull, Karl Kuchler, Shankar Thangamani, Anuradha Chowdhary, Jigar V Desai, Neeraj Chauhan
UNLABELLED: Candida auris , a multidrug-resistant human fungal pathogen, was first identified in 2009 in Japan. Since then, systemic C. auris infections have now been reported in more than 50 countries, with mortality rates of 30-60%. A major contributing factor to its high inter- and intrahospital clonal transmission is that C. auris, unlike most Candida species, displays unique skin tropism and can stay on human skin for a prolonged period. However, the molecular mechanisms responsible for C...
March 18, 2024: bioRxiv
#25
Mary Ann Jabra-Rizk, Tristan Wang, Dimitrios Sofras, Daniel Montelongo-Jauregui, Telmo Paiva, Hans Carolus, Yves Dufrene, Areej Alfaifi, Carrie McCracken, Vincent Bruno, Patrick Van Dijck
Candida auris is an emerging nosocomial fungal pathogen associated with life-threatening invasive disease due to its persistent colonization, high level of transmissibility and multi-drug resistance. Aggregative and non-aggregative growth phenotypes for C. auris strains with different biofilm forming abilities, drug susceptibilities and virulence characteristics have been described. Using comprehensive transcriptional analysis we identified key cell surface adhesins that were highly upregulated in the aggregative phenotype during in vitro and in vivo grown biofilms using a mouse model of catheter infection...
March 22, 2024: Research Square
#26
Tristan W Wang, Dimitrios Sofras, Daniel Montelongo-Jauregui, Telmo O Paiva, Hans Carolus, Yves F Dufrêne, Areej A Alfaifi, Carrie McCracken, Vincent M Bruno, Patrick Van Dijck, Mary Ann Jabra-Rizk
Candida auris is an emerging nosocomial fungal pathogen associated with life-threatening invasive disease due to its persistent colonization, high level of transmissibility and multi-drug resistance. Aggregative and non-aggregative growth phenotypes for C. auris strains with different biofilm forming abilities, drug susceptibilities and virulence characteristics have been described. Using comprehensive transcriptional analysis we identified key cell surface adhesins that were highly upregulated in the aggregative phenotype during in vitro and in vivo grown biofilms using a mouse model of catheter infection...
March 21, 2024: bioRxiv
#27
JOURNAL ARTICLE
Maryam Hamidi, Ali Mohaghegh Toosi, Behjat Javadi, Javad Asili, Vahid Soheili, Abolfazl Shakeri
BACKGROUND: Natural products are one of the best candidates for controlling drug-resistant pathogens, the advantages of which include low production costs and low side effects. In this study, as potential antimicrobials, the anti-bacterial and antibiofilm activities of several Iranian native medicinal plants were screened. METHODS: The antibacterial/antifungal and anti-biofilm activities of 18 medicinal plants including Reseda lutea L., Nepeta sintenisii Bunge., Stachys turcomanica Trautv...
March 28, 2024: BMC complementary medicine and therapies
#28
REVIEW
David R Soll
SUMMARY Candida albicans remains a major fungal pathogen colonizing humans and opportunistically invading tissue when conditions are predisposing. Part of the success of C. albicans was attributed to its capacity to form hyphae that facilitate tissue invasion. However, in 1987, a second developmental program was discovered, the "white-opaque transition," a high-frequency reversible switching system that impacted most aspects of the physiology, cell architecture, virulence, and gene expression of C. albicans ...
March 28, 2024: Microbiology and Molecular Biology Reviews: MMBR
#29
JOURNAL ARTICLE
Maíra Terra Garcia, Paulo Henrique Fonseca do Carmo, Lívia Mara Alves Figueiredo-Godoi, Natália Inês Gonçalves, Patrícia Michelle Nagai de Lima, Lucas de Paula Ramos, Luciane Dias de Oliveira, Alexandre Luiz Souto Borges, Anita Shukla, Juliana Campos Junqueira
Candida albicans can cause various types of oral infections, mainly associated with denture stomatitis. Conventional therapy has been linked to high recurrence, toxicity, and fungal resistance, necessitating the search for new drugs and delivery systems. In this study, caffeic acid phenethyl ester (CAPE) and gellan gum (GG) were studied as an antifungal agent and carrier system, respectively. First, we observed that different GG formulations (0.6 to 1.0% wt/vol) were able to incorporate and release CAPE, reaching a controlled and prolonged release over 180 min at 1...
February 20, 2024: Pharmaceutics
#30
JOURNAL ARTICLE
Alsayed E Mekky, Ahmed E M Abdelaziz, Fady Sayed Youssef, Shymaa A Elaskary, Aly A Shoun, Eman A Alwaleed, Mahmoud Ali Gaber, Abdulaziz A Al-Askar, Alhadary M Alsamman, Abdullah Yousef, Gehad AbdElgayed, Reda A Suef, Mohamed A Selim, Ebrahim Saied, Mohamed Khedr
Background and Objectives : Urinary tract infections [UTIs] are considered the third most known risk of infection in human health around the world. There is increasing appreciation for the pathogenicity of Gram-positive and Gram-negative strains in UTIs, aside from fungal infection, as they have numerous virulence factors. Materials and Methods : In this study, fifty urine samples were collected from patients suffering from UTI. Among the isolates of UTI microbes, six isolates were described as MDR isolates after an antibiotic susceptibility test carried out using ten different antibiotics...
March 21, 2024: Medicina
#31
REVIEW
Madalina Preda, Razvan Daniel Chivu, Lia Mara Ditu, Oana Popescu, Loredana Sabina Cornelia Manolescu
Candida auris poses a serious threat to infection control and patient care since it can produce invasive infections that have a high fatality rate, has been linked to outbreaks in hospital environments, and is typically resistant to several antifungal medications. Since its first description in 2009, six clades have been described. The emerging fungal pathogen possesses adhesins that allow it to adhere to host tissues and medical devices, can form biofilms, produces various hydrolytic enzymes, employs several strategies to evade host immune responses, and exhibits high genetic diversity, which may contribute to its ability to adapt to different environmental conditions and evade host defenses...
March 1, 2024: Biomedicines
#32
JOURNAL ARTICLE
Gul Kaya, Eda Ondul Koc, Sadin Özdemir, M Serkan Yalçın, Kasim Ocakoglu, Nadir Dizge
Chromium aluminum carbide (Cr2 AlC) MAX phase and Cr2 CTx (MXene-Cr) were synthesized by the pressureless sintering method and hydrothermal method, respectively. In addition to this, the free radical scavenging activities (FRSA) of MAX-Cr phase and MXene-Cr compounds were tested and compared with ascorbic acid and trolox as standard compounds. The obtained FRSA results of MAX-Cr phase and MXene-Cr were 42.82 and 59.64%, respectively, at 100 mg/L concentration. MXene-Cr showed a 66.90% inhibitory effect on α-amylase at 200 mg/L...
March 28, 2024: Applied Biochemistry and Biotechnology
#33
REVIEW
Madiha Nazir, Attia Iram, Deniz Cekmecelioglu, Ali Demirci
Fungal cellulases are the most sought-after biological molecules produced from microbial sources in the last four decades. Owing to their emerging applications in the bioenergy industry for hydrolyzing cellulose, for which they are the most abundant source on this planet, research trends are shifting heavily toward adapting to submerged fermentation. However, filamentous fungal species, which are efficient cellulase producers, are well-adapted to low-moisture solid support as the substrate, such as in nature...
January 31, 2024: Frontiers in Bioscience (Elite Edition)
#34
JOURNAL ARTICLE
Anna Clara Gurgel Gomes, Janaina Gomes Maciel, Amanda Aparecida Maia Neves Garcia, Letycia Accioly Simões Coelho, Giulia Murcia Rodrigues, Vinicius Carvalho Porto, Grigorios Polyzois, Marlise Inêz Klein, Simone Soares, Vanessa Migliorini Urban, Karin Hermana Neppelenbroek
BACKGROUND: Denture biofilm acts as a potential reservoir for respiratory pathogens, considerably increasing the risk of lung infections, specifically aspiration pneumonia, mainly 48h after hospital admission. The establishment of a straightforward, affordable, and applicable hygiene protocol in a hospital environment for the effective control of denture biofilm can be particularly useful to prevent respiratory infections or reduce the course of established lung disease. OBJECTIVES: To evaluate the anti-biofilm effectiveness of denture cleaning protocols in hospitalized patients...
2024: Journal of Applied Oral Science: Revista FOB
#35
JOURNAL ARTICLE
Bhabasha Gyanadeep Utkalaja, Satya Ranjan Sahu, Sushree Subhashree Parida, Narottam Acharya
The incidence of infections caused by Candida species, specifically by drug-resistant isolates, is a major health concern as they can disseminate to and colonize most vital organs, enhancing morbidity and mortality. Several molecular mechanisms have been reported to be involved in drug resistance. These are mostly drug- and isolate-specific. Here, we characterized three different genetically modified strains of C. albicans that were multi-drug-resistant (MDR) and deciphered a uniform mechanism responsible for resistance...
March 19, 2024: Journal of Fungi (Basel, Switzerland)
#36
JOURNAL ARTICLE
Fátima Cerqueira, Rui Medeiros, Inês Lopes, Carla Campos, Maria Pia Ferraz, Fernando Silva, Luís G Alves, Eugénia Pinto
The importance of fungal infections, particularly those caused by yeasts, is increasing among the medical community. Candida albicans and Cryptococcus neoformans are amongst the high-priority fungal species identified by the World Health Organization (WHO) and are considered in the critical group, while Candida krusei is included in the medium-priority group. The cyclam salt H4 [H2 (4-CF3 PhCH2 )2 Cyclam]Cl4 proved to be active against the growth of these three yeasts, and the aim of this work was to verify its interference with their virulence mechanisms, whether shared or unique...
February 28, 2024: Antibiotics
#37
JOURNAL ARTICLE
João Lozano, Eva Cunha, Cristina Almeida, Mónica Nunes, Ricardo Dias, Eduardo Vicente, Daniela Sebastião, Sérgio Henriques, Luís Madeira de Carvalho, Adolfo Paz-Silva, Manuela Oliveira
Parasiticide fungi are considered an accurate, sustainable, and safe solution for the biocontrol of animal gastrointestinal (GI) parasites. This research provides an initial characterization of the virulence of the native parasiticide fungus Mucor circinelloides (FMV-FR1) and an assessment of its impact on birds' gut microbes. The genome of this fungus was sequenced to identify the genes coding for virulence factors. Also, this fungus was checked for the phenotypic expression of proteinase, lecithinase, DNase, gelatinase, hemolysin, and biofilm production...
March 27, 2024: Microbiology Spectrum
#38
JOURNAL ARTICLE
Josefa Roselló, Juan Antonio Llorens-Molina, Silvina Larran, Francisca Sempere-Ferre, M Pilar Santamarina
INTRODUCTION: Fungal pathogens cause major yield losses in agriculture and reduce food quality and production worldwide. PURPOSE: To evaluate new safer alternatives to chemicals for disease management and preserve the shelf life of food, this research was conducted to: determine the chemical composition of the essential oils (EOs) of Thymus serpyllum and Thymus piperella chemotypes 1 and 2; investigate the antifungal potential of EOs in vitro against: Alternaria alternata , Bipolaris spicifera , Curvularia hawaiiensis , Fusarium oxysporum f...
2024: Frontiers in Plant Science
#39
JOURNAL ARTICLE
Sabina Karačić, Brianne Palmer, Carole T Gee, Gabriele Bierbaum
Biofilms are important in the natural process of plant tissue degradation. However, fundamental knowledge of biofilm community structure and succession on decaying leaves under different oxygen conditions is limited. Here, we used 16S rRNA and ITS gene amplicon sequencing to investigate the composition, temporal dynamics, and community assembly processes of bacterial and fungal biofilms on decaying leaves in vitro. Leaves harvested from three plant species were immersed in lake water under aerobic and anaerobic conditions in vitro for three weeks...
March 20, 2024: Scientific Reports
#40
JOURNAL ARTICLE
Yandan Wu, Aimei Sun, Fei Chen, Yin Zhao, Xianhu Zhu, Tianbao Zhang, Guanghui Ni, Ruirui Wang
In this work, we synthesized a series of indole derivatives to cope with the current increasing fungal infections caused by drug-resistant Candida albicans. All compounds were evaluated for antifungal activities against Candida albicans in vitro, and the structure-activity relationships (SARs) were analyzed. The results indicated that indole derivatives used either alone or in combination with fluconazole showed good activities against fluconazole-resistant Candida albicans. Further mechanisms studies demonstrated that compound 1 could inhibit yeast-to-hypha transition and biofilm formation of Candida albicans, increase the activity of the efflux pump, the damage of mitochondrial function, and the decrease of intracellular ATP content...
March 16, 2024: Bioorganic Chemistry
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