Leptospira Bacteria
Leptospira Bacteria - Related Videos
07:27
CRISPR Interference-Based Gene Silencing: A Technique for Targeted Repression of Gene Function in Pathogenic Leptospira
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2025
This video demonstrates a CRISPR interference-based gene silencing in pathogenic Leptospira. Targeted repression of gene expression using a CRISPR/Cas system that blocks mRNA formation helps identify candidate genes for pathological and pharmacological studies.
08:51
A Modular Workflow for Quantitative, Structural and Functional Analysis of Leptospira Biofilms
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2025
This protocol delivers a modular, BSL-2 workflow combining crystal-violet biomass assays, time-lapse phase-contrast kinetics, confocal 3-D/matrix mapping, SEM ultrastructure, and an in vivo hamster infection module to cultivate, quantify, characterize and investigate Leptospira biofilm functional role, enabling standardized evaluation of mutants and anti-biofilm interventions across laboratories.
06:05
Polymerase Chain Reaction and Dot-Blot Hybridization for Leptospira Detection in Water Samples
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2024
In this study, a dot-blot application was designed to detect Leptospira from the three main clades in water samples. This method allows for the identification of minimal DNA quantities specifically targeted by a digoxigenin-labeled probe, easily detected by an anti-digoxigenin antibody. This approach is a valuable and satisfactory tool for screening purposes.
14:49
Application of CRISPR Interference (CRISPRi) for Gene Silencing in Pathogenic Species of Leptospira
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Cited by 9 •
2021
Here, the application of CRISPR interference (CRISPRi) for specific gene silencing in Leptospira species is described. Leptospira cells are transformed by conjugation with plasmids expressing dCas9 (catalytically "dead" Cas9) and a single-guide RNA (sgRNA), responsible for base pairing to the desired genomic target. Methods to validate gene silencing are presented.
10:57
Culturing and Enumerating Bacteria from Soil Samples
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2023
Source: Laboratories of Dr. Ian Pepper and Dr. Charles Gerba - The University of Arizona Demonstrating Authors: Bradley Schmitz and Luisa Ikner Surface soils are a heterogeneous mixture of inorganic and organic particles that combine together to form secondary aggregates. Within and between the aggregates are voids or pores that visually contain both air and water. These conditions create an ideal ecosystem for bacteria, so all soils contain vast populations of bacteria, usually over 1 million...
FAQs
The corkscrew movement of Leptospira bacteria is produced by internal flagella, structures located within the cells rather than presented as external appendages. This motility enables the organisms to migrate through water, soil, and host tissues. In biological studies, connecting movement with these environments helps explain how exposure settings and tissue-associated movement can be investigated.
Motility provides a biological link between environmental exposure and host-associated investigation. Because Leptospira can move through water, soil, and host tissues, researchers can consider both contaminated surroundings and infected animals when examining how infection may be transmitted to humans. This makes movement a relevant feature in studies of transmission and infection processes.
Dark-field microscopy, selective culture, polymerase chain reaction, and serological testing support detection or identification under different conditions. The useful comparison therefore concerns the research question and the available experimental setting, rather than assuming that one method is universally superior. Recognizing these differences helps investigators choose techniques suited to transmission studies, strain characterization, or infection research.
Dark-field microscopy contributes a microscopy-based approach to investigating Leptospira. It can be considered alongside selective culture, polymerase chain reaction, and serological testing, which represent different biological techniques for detection or identification. Including a microscopy method gives researchers a distinct way to examine the organism within studies focused on infection, transmission, or pathogenic strains.
Selective culture and polymerase chain reaction are separate approaches that can support detection or identification under differing conditions. Their inclusion in biological studies supports work ranging from examining pathogenic strains to investigating transmission. The selected method should match the study’s detection or identification objective and the conditions being examined, rather than being chosen independently of the research purpose.
Serological testing, dark-field microscopy, selective culture, and polymerase chain reaction give researchers multiple technique categories for investigating Leptospira. Their findings can support diagnosis, characterization of pathogenic strains, and studies of transmission. In turn, this evidence contributes to surveillance and helps inform prevention and treatment strategies, while recognizing that each method performs detection or identification under different conditions.