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Related Concept Videos

Sputum Studies II: Culture and Sensitivity01:20

Sputum Studies II: Culture and Sensitivity

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Description
Sputum culture and sensitivity is a medical procedure used to diagnose bacterial infections in the respiratory tract and select the most appropriate antibiotics for treatment. This process involves analyzing sputum samples of thick and opaque secretions produced in the lungs and airways. These samples are collected from patients and then sent to the laboratory for analysis.
The test can identify various pathogens responsible for respiratory infections, including Streptococcus,...
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Urine Studies II: Urine Culture and Sensitivity Test01:26

Urine Studies II: Urine Culture and Sensitivity Test

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A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...
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Conditioned Taste Aversion01:14

Conditioned Taste Aversion

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Conditioned taste aversion, also known as sauce béarnaise syndrome, is a phenomenon in which an individual develops an aversion to a certain food taste following a negative experience, typically illness. This form of aversion is a type of classical conditioning in which the taste of the food (conditioned stimulus, CS) is associated with the experience of illness (unconditioned stimulus, UCS).
A notable characteristic of conditioned taste aversion is that it often requires only a single...
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2° Amines to N-Nitrosamines: Reaction with NaNO201:20

2° Amines to N-Nitrosamines: Reaction with NaNO2

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Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
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Serum Laboratory Studies, Stool Test, Breath Test01:30

Serum Laboratory Studies, Stool Test, Breath Test

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Gastrointestinal (GI) diagnostic studies are pivotal in confirming, ruling out, diagnosing, or staging various diseases, including cancers. Following diagnosis, allocating time for discussions with the patient and providing informational resources is crucial. Diagnostic assessments of the GI tract often occur in outpatient settings like endoscopy suites or GI labs. Preparation for these tests may include dietary restrictions, fasting, liquid bowel preparations, laxatives, enemas, and the...
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Antimicrobial Effectiveness01:28

Antimicrobial Effectiveness

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The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
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Biotransformation of Deoxynivalenol to the Novel Metabolite Deoxynivalenol-8,15-hemiketal-7-glucoside by the <i>Bacillus subtilis</i> Glycosyltransferase YjiC.

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Related Experiment Video

Updated: Sep 2, 2025

Quantification of Fungal Colonization, Sporogenesis, and Production of Mycotoxins Using Kernel Bioassays
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The Deoxynivalenol Challenge.

Mark W Sumarah1

  • 1London Research and Development Center, Agriculture and Agri-Food Canada, London, Ontario N5V 4T3, Canada.

Journal of Agricultural and Food Chemistry
|August 1, 2022
PubMed
Summary

Deoxynivalenol (DON) mycotoxin poses significant challenges for agriculture and food security. Addressing DON requires understanding its profiles, developing rapid tests, assessing human exposure, and managing contaminated products.

Area of Science:

  • Agricultural Science
  • Food Science
  • Toxicology

Background:

  • Deoxynivalenol (DON) is a major mycotoxin from *Fusarium* species affecting grains like maize, barley, and wheat.
  • DON is a primary concern in countries like Canada, causing economic losses and impacting food and feed security.

Purpose of the Study:

  • To examine the key challenges posed by deoxynivalenol (DON) to farmers, producers, and consumers.
  • To highlight areas needing further research and management strategies for DON contamination.

Main Methods:

  • This perspective synthesizes current knowledge on DON challenges.
  • It reviews four primary areas: toxin profiles and crop interactions, analytical testing needs, human exposure assessment, and supply chain management.
Keywords:
biomarkerchemotypedeoxynivalenoldetoxificationrapid testing

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Main Results:

  • Understanding *Fusarium graminearum* chemotypes and toxin fate in crops is crucial.
  • Rapid analytical methods for DON and masked/modified toxins are needed.
  • Human exposure assessments are vital for public health.
  • Effective management of DON-contaminated products throughout the supply chain is essential.

Conclusions:

  • Despite extensive research, managing DON remains complex.
  • Climate change, evolving fungal populations, and global food security needs exacerbate DON challenges.
  • Continued research and integrated management strategies are necessary to mitigate DON risks.