We study the presence within the worm () of a fluorescent strain of the worm's bacterial food ( () OP50) during early adulthood. Use of a microfluidic chip based on a thin glass coverslip substrate allows investigation of the intestinal bacterial load using a Spinning Disk Confocal Microscope (SDCM) equipped with a high-resolution objective (60×). High-resolution z-stack fluorescence images of the gut bacteria in adult worms, which were loaded in the microfluidic chip and subsequently fixed, were analyzed using IMARIS software and 3D reconstructions of the intestinal bacterial load in the worms were obtained. We present an automated bivariate histogram analysis of the volumes and intensities of the bacterial spots for each worm and find that, as the worms age, the bacterial load in their hindguts increases. We show the advantage of single-worm resolution automated analysis for bacterial load studies and anticipate that the methods described in our work can be easily implemented in existing microfluidic solutions to enable thorough studies of bacterial proliferation.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10248764 | PMC |
| http://dx.doi.org/10.1039/d3ra02934d | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nursing home acquired pneumonia (NHAP), and its subset - aspiration-associated pneumonia, is a leading cause of morbidity and mortality among residents in long-term care facilities (LTCFs). Understanding colonization dynamics of respiratory pathogens in LTCF residents is essential for effective infection control. This study examines the longitudinal trends in prevalence, persistence, bacterial load, and co-colonization patterns of five respiratory pathogens in three LTCFs in Phoenix, Arizona.
View Article and Find Full Text PDFEnhancing cell-mediated immunity through dendritic cell activation: the role of Tri-GalNAc-modified PLGA-PEG nanoparticles encapsulating SR717.
Front Immunol
December 2024
State Key Laboratory for Animal Disease Control and Prevention & Lanzhou Center for Tuberculosis Research, Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.
Introduction: Vaccines against intracellular pathogens like require the induction of effective cell-mediated immunity. Adjuvants primarily enhance antigen-induced adaptive immunity by promoting the activation of antigen-presenting cells (APCs).This study is to develop an adjuvant targeted to dendritic cells (DCs), one of the main APCs, so as to assist in inducing a long-term cellular immune response to protein antigens.
View Article and Find Full Text PDFRegional antimicrobial resistance gene flow among the One Health sectors in China.
Microbiome
January 2025
National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, 102206, China.
Background: Antimicrobial resistance poses a significant threat to global health, with its spread intricately linked across human, animal, and environmental sectors. Revealing the antimicrobial resistance gene (ARG) flow among the One Health sectors is essential for better control of antimicrobial resistance.
Results: In this study, we investigated regional ARG transmission among humans, food, and the environment in Dengfeng, Henan Province, China by combining large-scale metagenomic sequencing with culturing of resistant bacterial isolates in 592 samples.
The circadian clock gene period regulates the composition and daily bacterial load of the gut microbiome in Drosophila melanogaster.
Sci Rep
January 2025
Department of Biology, University of Padova, Padova, Italy.
While Drosophila melanogaster serves as a crucial model for investigating both the circadian clock and gut microbiome, our understanding of their relationship in this organism is still limited. Recent analyses suggested that the Drosophila gut microbiome modulates the host circadian transcriptome to minimize rapid oscillations in response to changing environments. Here, we examined the composition and abundance of the gut microbiota in wild-type and arrhythmic per flies, under 12 h:12 h light: dark (12:12 LD) and constant darkness (DD) conditions.
View Article and Find Full Text PDFMtrAB two-component system is crucial for the intrinsic resistance and virulence of Mycobacterium abscessus.
Int J Antimicrob Agents
January 2025
School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China; Institute of Drug Discovery, State Key Laboratory of Respiratory Disease, Guangzhou Institutes of Biomedicine and Health (GIBH), Chinese Academy of Sciences (CAS), Guangzhou, China; China-New Zealand Joint Laboratory on Biomedicine and Health, Guangzhou Institutes of Biomedicine and Health (GIBH), Chinese Academy of Sciences (CAS), Guangzhou, China; University of Chinese Academy of Science, Beijing, China; Guangzhou National Laboratory, Guangzhou, China. Electronic address:
Mycobacterium abscessus (Mab) poses serious therapeutic challenges, largely due to its intrinsic resistance to many antibiotics. The development of targeted therapeutic strategies necessitates the identification of bacterial factors that contribute to its reduced susceptibility to antibiotics and/or to the killing by its host cells. In this study, we discovered that Mab strains with disrupted mtrA, mtrB or both, or a gene-edited mtrA encoding MtrA with Tyr102Cys mutation, exhibited highly increased sensitivity to various drugs compared to the wild-type Mab.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!