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REVIEW
Kai-Chao Wen, Zheng-An Li, Ji-Heng Liu, Chuan Zhang, Feng Zhang, Feng-Qian Li
The ureteral stent is an effective treatment for clinical ureteral stricture following urological surgery, and the functional coating of the stent could effectively inhibit bacterial colonization and other complications. The present review provides an analysis and description of the materials used in ureteral stents and their coatings. Emphasis is placed on the technological advancements of functional coatings, taking into consideration the characteristics of these materials and the properties of their active substances...
April 12, 2024: Colloids and Surfaces. B, Biointerfaces
#22
JOURNAL ARTICLE
Yee Jean Chai, Taufiq Ahmad Syauqi, Kumar Sudesh, Tan Leng Ee, Cheah Chee Ban, Amanda Chong Kar Mun, Elisabeth Marijke Anne Strain, Faradina Merican, Masazurah A Rahim, Kaharudin Md Salleh, Chee Su Yin
The expanding urbanization of coastal areas has led to increased ocean sprawl, which has had both physical and chemical adverse effects on marine and coastal ecosystems. To maintain the health and functionality of these ecosystems, it is imperative to develop effective solutions. One such solution involves the use of biodegradable polymers as bioactive coatings to enhance the bioreceptivity of marine and coastal infrastructures. Our study aimed to explore two main objectives: (1) investigate PHA-degrading bacteria on polymer-coated surfaces and in surrounding seawater, and (2) comparing biofilm colonization between surfaces with and without the polymer coating...
2024: PloS One
#23
JOURNAL ARTICLE
Victoria Chevée, Karthik Hullahalli, Katherine G Dailey, Leslie Güereca, Chenyu Zhang, Matthew K Waldor, Daniel A Portnoy
Listeria monocytogenes is a bacterial pathogen that can cause life-threatening central nervous system (CNS) infections. While mechanisms by which L. monocytogenes and other pathogens traffic to the brain have been studied, a quantitative understanding of the underlying dynamics of colonization and replication within the brain is still lacking. In this study, we used barcoded L. monocytogenes to quantify the bottlenecks and dissemination patterns that lead to cerebral infection. Following intravenous (IV) inoculation, multiple independent invasion events seeded all parts of the CNS from the blood, however, only one clone usually became dominant in the brain...
April 23, 2024: Proceedings of the National Academy of Sciences of the United States of America
#24
REVIEW
José F Siqueira, Warley O Silva, Kaline Romeiro, Luciana F Gominho, Flávio R F Alves, Isabela N Rôças
BACKGROUND: Microorganisms colonizing the apical root canal system are conceivably the ones directly involved with the causation and maintenance of apical periodontitis. OBJECTIVES: This article systematically reviews the reports on the microbiome occurring exclusively at the apical root canal of teeth with primary and posttreatment apical periodontitis. METHODS: The electronic databases PubMed, Embase, Web of Science, Science Direct, and Proquest were searched up to August 2023...
April 18, 2024: International Endodontic Journal
#25
JOURNAL ARTICLE
Johannes Zimmermann, Agnes Piecyk, Michael Sieber, Carola Petersen, Julia Johnke, Lucas Moitinho-Silva, Sven Künzel, Lena Bluhm, Arne Traulsen, Christoph Kaleta, Hinrich Schulenburg
UNLABELLED: The microbiome expresses a variety of functions that influence host biology. The range of functions depends on the microbiome's composition, which can change during the host's lifetime due to neutral assembly processes, host-mediated selection, and environmental conditions. To date, the exact dynamics of microbiome assembly, the underlying determinants, and the effects on host-associated functions remain poorly understood. Here, we used the nematode Caenorhabditis elegans and a defined community of fully sequenced, naturally associated bacteria to study microbiome dynamics and functions across a major part of the worm's lifetime of hosts under controlled experimental conditions...
April 18, 2024: MBio
#26
JOURNAL ARTICLE
Katherine E Goodman, Monica Taneja, Laurence S Magder, Eili Y Klein, Mark Sutherland, Scott Sorongon, Pranita D Tamma, Philip Resnik, Anthony D Harris
UNLABELLED: Identifying long-term care facility (LTCF)-exposed inpatients is important for infection control research and practice, but ascertaining LTCF exposure is challenging. Across a large validation study, electronic health record data fields identified 76% of LTCF-exposed patients compared to manual chart review. OBJECTIVE: Residence or recent stay in a long-term care facility (LTCF) is an important risk factor for antibiotic-resistant bacterial colonization...
April 18, 2024: Infection Control and Hospital Epidemiology
#27
JOURNAL ARTICLE
Tanakanti Praveen, Vijayalakshmi S Kotrashetti, Ramakant S Nayak, Sachita Shrikant Naik, Kishore Bhat, Manohar Suresh Kugaji
BACKGROUND: Dental caries is a multistep process which initiates the development of plaque' defined as a structured biofilm containing microbial communities. Teeth provide unique surfaces for bacterial colonization. Serotypes of Streptococcus mutans implicate the development of dental caries. AIM: The aim of the study was to determine the prevalence and association of serotypes of S. mutans in groups with and without dental caries. MATERIALS AND METHODS: One hundred and fifty adults aged between 18 and 35 years were included in the study...
March 2024: J Conserv Dent Endod
#28
JOURNAL ARTICLE
Subhojit Datta, Lipi Chattopadhyay, Shrestha Barai, Kunal Mandal, Gouranga Kar, Bijan Majumdar
The extraction of bast fibres such as jute from plant stems involves the removal of pectin, hemicellulose, and other noncellulosic materials through a complex microbial community. A consortium of pectinolytic bacterial strains has been developed and commercialized to reduce the retting time and enhance fibre quality. However, there are currently no studies on jute that describe the structural changes and sequential microbial colonization and pectin loss that occur during microbe-assisted water retting. This study investigated the stages of microbial colonization, microbial interactions, and sequential degradation of pectic substances from jute bark under controlled and conventional water retting...
April 17, 2024: BMC Plant Biology
#29
JOURNAL ARTICLE
Yu Shuai, Xin Wang, Songli Chen, Tixue Huang, Zhao Wang, Yi Zhang
PURPOSE: The process of infection by bacteria and viruses involves invasion, establishment, growth, and parasitization. Poor oral hygiene and dysbiosis are significant risk factors for pneumonia. The aim of this study was to evaluate bacterial transport into the trachea during intubation for orthopedic surgery and the impact of oral hygiene treatment. METHODS: The study cohort included 53 patients with fracture who underwent surgical procedures under general anesthesia and were divided into two groups: an oral hygiene treatment (OHT) group (n = 27) and a control group (n = 26)...
2024: Journal of Oral Science
#30
JOURNAL ARTICLE
Anand Ravichandran, Jothilingam Sivapackiyam, Saravanan Periasamy
The human oral cavity is colonized by a diverse microbial community, which includes both native and transient colonizers. The microbial composition is crucial for maintaining oral homeostasis, but due to overgrowth or imbalances of these microbial communities, dysbiosis can occur. There is a lack of understanding of the research of native and transient colonizers in the oral cavity of the Indian subpopulation Therefore, in our present study, we explored the role and prevalence of transient and native colonizers between healthy and comorbid oral diseased human individuals...
April 15, 2024: Microbial Pathogenesis
#31
REVIEW
Irene Sonu, Sun Jung Oh, Satish S C Rao
PURPOSE OF REVIEW: Over the last few decades, there have been remarkable strides in endoscopy and radiological imaging that have advanced gastroenterology. However, the management of neurogastroenterological disorders has lagged behind, in part handicapped by the use of catheter-based manometry that is both non-physiological and uncomfortable. The advent of capsule technology has been a game changer for both diagnostic and therapeutic applications. RECENT FINDINGS: Here, we discuss several capsule devices that are available or under investigation...
April 17, 2024: Current Gastroenterology Reports
#32
JOURNAL ARTICLE
Jia Mun Chan, Elisa Ramos-Sevillano, Modupeh Betts, Holly U Wilson, Caroline M Weight, Ambrine Houhou-Ousalah, Gabriele Pollara, Jeremy S Brown, Robert S Heyderman
Streptococcus pneumoniae , a common colonizer of the upper respiratory tract, invades nasopharyngeal epithelial cells without causing disease in healthy participants of controlled human infection studies. We hypothesized that surface expression of pneumococcal lipoproteins, recognized by the innate immune receptor TLR2, mediates epithelial microinvasion. Mutation of lgt in serotype 4 (TIGR4) and serotype 6B (BHN418) pneumococcal strains abolishes the ability of the mutants to activate TLR2 signaling. Loss of lgt also led to the concomitant decrease in interferon signaling triggered by the bacterium...
April 17, 2024: Infection and Immunity
#33
JOURNAL ARTICLE
Lili Chen, Li Zhao, Gaowei Zhang, Zhuozhen Li, Liangliang Qu, Liping Luo
A natural aging mouse model can exhibit physiological characteristics that closely resemble those of human aging. Through long-term observation, it reflects the occurrence and development of the aging process more accurately. Although numerous beneficial effects of royal jelly (RJ) have been extensively demonstrated in multiple experimental models, the effects of RJ on naturally aging mice have not yet been investigated. In this study, middle-aged male C57BL/6J mice were given RJ for 9 consecutive months to investigate its impact on the intestinal barrier function, gut microbiota, short-chain fatty acids (SCFAs) content and possible mechanisms...
April 17, 2024: Food & Function
#34
JOURNAL ARTICLE
Mengying Chen, Shizhong Feng, He Lv, Zewen Wang, Yuhang Zeng, Caihong Shao, Wenxiong Lin, Zhixing Zhang
Crop roots are colonized by large numbers of microorganisms, collectively known as the root-microbiome, which modulate plant growth, development and contribute to elemental nutrient uptake. In conditions of nitrogen limitation, the over-expressed Calcineurin B-like interacting protein kinase 2 (OsCIPK2) gene with root-specific promoter (RC) has been shown to enhance growth and nitrogen uptake in rice. Analysis of root-associated bacteria through high-throughput sequencing revealed that OsCIPK2 has a significant impact on the diversity of the root microbial community under low nitrogen stress...
April 16, 2024: BMC Plant Biology
#35
JOURNAL ARTICLE
Fanrui Hao, Huimin Liu, Bin Qi
Food availability and usage is a major adaptive force for the successful survival of animals in nature, yet little is known about the specific signals that activate the host digestive system to allow for the consumption of varied foods. Here, by using a food digestion system in C. elegans, we discover that bacterial peptidoglycan (PGN) is a unique food signal that activates animals to digest inedible food. We identified that a glycosylated protein, Bacterial Colonization Factor-1 (BCF-1), in the gut interacts with bacterial PGN, leading to the inhibition of the mitochondrial unfolded protein response (UPRmt ) by regulating the release of Neuropeptide-Like Protein (NLP-3)...
April 16, 2024: Nature Communications
#36
JOURNAL ARTICLE
Xi Huo, Ping Liu
Antimicrobial de-escalation refers to reducing the spectrum of antibiotics used in treating bacterial infections. This strategy is widely recommended in many antimicrobial stewardship programs and is believed to reduce patients' exposure to broad-spectrum antibiotics and prevent resistance. However, the ecological benefits of de-escalation have not been universally observed in clinical studies. This paper conducts computer simulations to assess the ecological effects of de-escalation on the resistance prevalence of Pseudomonas aeruginosa-a frequent pathogen causing nosocomial infections...
2024: PloS One
#37
JOURNAL ARTICLE
Xavier Gonzalez, Javier E Irazoqui
Microbiotas are complex microbial communities that colonize specific niches in the host and provide essential organismal functions that are important in health and disease. Understanding the ability of each distinct community member to promote or impair host health, alone or in the context of the community, is imperative for understanding how differences in community structure affect host health and vice versa. Recently, a reference 12-member microbiota for the model organism Caenorhabditis elegans, known as CeMbio, was defined...
April 16, 2024: Molecular Microbiology
#38
JOURNAL ARTICLE
Marie Mazuel, Virginie Moulier, Anne-Sophie Bourrel, Cyril Guillier, Asmaa Tazi, Pierre-Henri Jarreau, Clément Chollat
Systematic culture of the tip of central lines is performed in many neonatal intensive care units (NICUs) to guide any subsequent antibiotic therapy. The clinical relevance of this procedure is debated, given the significant bacterial contamination during its removal. We aimed to describe infections related to catheters and assess the usefulness of central catheter systematic cultures for probabilistic antibiotic therapy in cases of suspicion of catheter-related infections in a NICU. A retrospective study in a NICU included all newborn patients hospitalized with a central catheter, between January 2018, and June 2019...
April 15, 2024: Scientific Reports
#39
JOURNAL ARTICLE
Jinxia Liu, Jane MacNaughtan, Annarein J C Kerbert, Theo Portlock, Javier Martínez Gonzalez, Yi Jin, Frederick Clasen, Abeba Habtesion, Huoyan Ji, Qin Jin, Alexandra Phillips, Francesco De Chiara, Ganesh Ingavle, Cesar Jimenez, Giacomo Zaccherini, Katherine Husi, Miguel Angel Rodriguez Gandia, Paul Cordero, Junpei Soeda, Lynda McConaghy, Jude Oben, Karen Church, Jia V Li, Haifeng Wu, Aarti Jalan, Pere Gines, Elsa Solà, Simon Eaton, Carrie Morgan, Michal Kowalski, Daniel Green, Amir Gander, Lindsey A Edwards, I Jane Cox, Helena Cortez-Pinto, Thomas Avery, Reiner Wiest, Francois Durand, Paolo Caraceni, Roberto Elosua, Joan Vila, Marco Pavesi, Vicente Arroyo, Nathan Davies, Rajeshwar P Mookerjee, Victor Vargas, Susan Sandeman, Gautam Mehta, Saeed Shoaie, Julian Marchesi, Agustín Albillos, Fausto Andreola, Rajiv Jalan
OBJECTIVE: Targeting bacterial translocation in cirrhosis is limited to antibiotics with risk of antimicrobial resistance. This study explored the therapeutic potential of a non-absorbable, gut-restricted, engineered carbon bead adsorbent, Yaq-001 in models of cirrhosis and acute-on-chronic liver failure (ACLF) and, its safety and tolerability in a clinical trial in cirrhosis. DESIGN: Performance of Yaq-001 was evaluated in vitro . Two-rat models of cirrhosis and ACLF, (4 weeks, bile duct ligation with or without lipopolysaccharide), receiving Yaq-001 for 2 weeks; and two-mouse models of cirrhosis (6-week and 12-week carbon tetrachloride (CCl4)) receiving Yaq-001 for 6 weeks were studied...
April 15, 2024: Gut
#40
JOURNAL ARTICLE
Bahareh Vakili, Parisa Shoaei, Kiana Shahzamani, Seyed Davar Siadat, Hasan Shojaei, Zahra Esfandiari, Elahe Nasri, Shiva Shabani, Ali Zamani Moghadam, Behrooz Ataei
BACKGROUND: Non-small cell lung cancer (NSCLC) patients with COVID-19 have an excessive chance of morbidity and mortality. The fecal-nasopharyngeal microbiota compositions of NSCLC patients were assessed in this study. METHODS: In total, 234 samples were collected from 17 NSCLC patients infected with COVID-19, 20 NSCLC patients without confirmed COVID-19, 40 non NSCLC patients with COVID-19, and 40 healthy individuals. RESULTS: In lung microbiota, the abundance of Streptococcus spp...
February 1, 2024: Archives of Iranian Medicine
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