Clostridium Botulinum
Clostridium Botulinum - Related Videos
12:25
Isolation and Quantification of Botulinum Neurotoxin From Complex Matrices Using the BoTest Matrix Assays
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Cited by 5 •
2014
The BoTest Matrix botulinum neurotoxin (BoNT) detection assays rapidly purify and quantify BoNT from a range of sample matrices. Here, we present a protocol for the detection and quantification of BoNT from both solid and liquid matrices and demonstrate the assay with BOTOX, tomatoes, and milk.
07:05
Ultrasound-guided Botulinum Toxin-A Injections: A Method of Treating Sialorrhea
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Cited by 21 •
2016
Botulinum toxin is injected into the salivary glands for the treatment of sialorrhea. The ultrasound-guided botulinum toxin injection in both the parotid and submandibular glands demonstrates a sustained efficacy and the absence of serious side effects.
02:27
Establishing a Mouse Model of Clostridium difficile Infection
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2026
Source: Winston, J. A., et al. Cefoperazone-treated Mouse Model of Clinically-relevant Clostridium difficile Strain R20291. J. Vis. Exp. (2016)This video demonstrates the procedure for inoculating antibiotic-pretreated mice with Clostridium difficile spores to establish a murine model of infection for studying pathogenesis and host responses.
03:08
Quantification of Clostridium difficile in Fecal Samples from an Infected Mouse Model
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2026
Source: Winston, J. A. et al. Cefoperazone-treated Mouse Model of Clinically-relevant Clostridium difficile Strain R20291. J. Vis. Exp. (2016)This video demonstrates the quantification of Clostridium difficile in fecal samples from an infected mouse model using selective culture techniques. It outlines the procedures for sample collection, anaerobic processing, serial dilution, and colony enumeration to assess bacterial colonization and host-pathogen interactions.
12:58
A Protocol to Characterize the Morphological Changes of Clostridium difficile in Response to Antibiotic Treatment
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Cited by 4 •
2017
Antibiotic efficacy is most commonly determined by conducting killing kinetic studies and measuring colony forming units (CFUs). By integrating scanning electron microscopy (SEM) with these standard methods, we can distinguish the pharmacological effects of treatment between different antibiotics.
FAQs
The toxins act inside nerve terminals rather than simply damaging muscle tissue. After entering these terminals, they cleave SNARE proteins, which are required for vesicles to release acetylcholine at neuromuscular junctions. Without effective acetylcholine release, communication between motor nerves and muscles is reduced, producing the characteristic weakness and flaccid paralysis of botulism.
Its spore-forming capacity and anaerobic physiology are central variables when scientists examine C. botulinum. Oxygen-limited conditions are associated with toxin generation in some strains, while sporulation provides a key biological process for microbiology research. Together, these features connect the organism’s physiology to questions about environmental conditions, toxin production, and food-safety risk.
The same inhibition of neurotransmitter release can have very different consequences depending on context. In botulism, toxin activity interferes with acetylcholine release and causes unwanted, potentially widespread flaccid paralysis. In carefully controlled treatments, purified toxin is used to reduce activity in selected muscles or neurological disorders, making dose and clinical control central to its application.
Its toxins provide a model for examining how a bacterial product enters nerve terminals and alters a specific host-cell process. Because the target is the machinery required for acetylcholine release, the organism links microbial physiology with cellular neurobiology. This makes it useful for connecting bacterial factors to defined effects in host tissues.
Food safety research considers the relationship between oxygen-limited conditions, toxin production by some strains, and the possibility of botulism. The organism’s anaerobic physiology makes environmental conditions an important part of this context. Studying these links helps scientists understand how microbial characteristics relate to toxin-associated hazards in food-related settings.
Purified botulinum toxin is applied in carefully controlled medical and cosmetic settings because its temporary inhibition of neurotransmitter release can reduce muscle activity. Medical uses include selected neurological or muscular disorders, while cosmetic treatments also rely on reduced muscle activity. These applications depend on controlled administration rather than the uncontrolled toxin activity associated with disease.