Prescott's Microbiology
11th Edition
ISBN: 9781260211887
Author: WILLEY, Sandman, Wood
Publisher: McGraw Hill
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 35, Problem 5AL
Summary Introduction
The Staphylococcus aureus Panton-Valentine leucocidin (PVL) is characterized by a pore-forming toxin, which is secreted by strains that are epidemiologically accompanying with the outburst of community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) and also with lethal necrotizing pneumonia. To test the function of PVL pulmonary disease, the pathogenicity of clinical samples, purified PVL, isogenic PVL-positive and PVL-negative S. aureus strains have been tested.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
In the name Mycobacterium tuberculosis, what are the genusname, specific epithet, and species name of this organism?
What virulence factor, present in Streptococcuspneumoniae but absent from Salmonella enterica, makesS. pneumoniae so highly virulent for mice?
Before development of a vaccine against this microbe, thedisease it caused accounted for two-thirds of bacterial meningi-tis cases during the first year of life but is still the number oneleading cause of mental retardation in patients who survive seri-ous disease due to permanent central nervous system disorders.What is the microorganism?(a) Haemophilus influenzae type B(b) Haemophilus influenzae type A(c) Neisseria meningitidis(d) Streptococcus pneumoniae(e) Listeria monocytogenes
Chapter 35 Solutions
Prescott's Microbiology
Ch. 35.1 - MICRO INQUIRY During which stages does the host...Ch. 35.1 - Define infection, infectious disease,...Ch. 35.1 - Prob. 2CCCh. 35.1 - What are some important characteristics of a...Ch. 35.1 - What is an obligate intracellular pathogen? How...Ch. 35.1 - Prob. 5CCCh. 35.1 - Prob. 6CCCh. 35.2 - Prob. 1CCCh. 35.2 - Prob. 2CCCh. 35.2 - Define droplet nuclei, vehicle, fomite, and...
Ch. 35.2 - Prob. 4CCCh. 35.2 - Prob. 5CCCh. 35.2 - Prob. 6CCCh. 35.3 - Prob. 1CCCh. 35.3 - Prob. 2CCCh. 35.3 - Prob. 3CCCh. 35.3 - Prob. 4CCCh. 35.4 - What are virulence factors?Ch. 35.4 - What are pathogenicity islands and why are they...Ch. 35.4 - Prob. 3CCCh. 35.4 - Prob. 4CCCh. 35 - Prob. 1RCCh. 35 - Prob. 2RCCh. 35 - Prob. 3RCCh. 35 - Prob. 1ALCh. 35 - Prob. 2ALCh. 35 - Prob. 3ALCh. 35 - Prob. 4ALCh. 35 - Prob. 5ALCh. 35 - Prob. 6AL
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Bacterial (e.g., S. pneumoniae) pneumonia is commonly manifested by a cough productive of sputum, whereas with atypical (e.g., Mycoplasma pneumoniae) pneumonia, the cough is usually nonproductive or absent. Explain.arrow_forwardWhat does the term nosocomial infection mean? What is the difference between an endogenous nosocomial infection and exogenous nosocomial infection? Describe the various infections produced by Pseudomonas aeruginosa .arrow_forwardMycobacterium tuberculosis compare how your pathogens (Mycobacterium tuberculosis ) may be similar and different, at least one for each with Haemophilus influenzae ?arrow_forward
- How can we experimentally prove that enterotoxin (A-B cholera toxin) is the sole cause of clinical symptoms of Cholera?arrow_forwardMycobacterium tuberculosis (MTB), commonly known as the Tubercle bacillus or Koch’s bacillus, is a pathogen of the mammalian respiratory system. It is the causative agent of the most cases of tuberculosis. MTB is an obligate aerobe and requires high amounts of oxygen to propagate. Tubercle bacilli are thin, rod shape, non-motile, and acid fast. Mycolic acid, the waxy layer on its cell surface, is responsible for its virulence and makes the bacteria resistant to Gram staining. Acid fast techniques are therefore used instead. In the Ziehl-Neelsen staining method, Acid –fast bacilli appear bright red against a blue background. Compared with other bacteria such as E. coli, M. tuberculosis is a slow grower, dividing approximately every 15-20 hours. Culture of M. tuberculosis will require a period of 3 weeks or more. Mycobacterium tuberculosis, along with M. africanum, M. bovis and M. microti all form the TB complex. M. tuberculosis is pathogenic for humans while M. bovis is pathogenic for…arrow_forwardWhile it is true that not all coliforms are pathogenic under normal conditions, please name two situations that can occur due to infection by pathogenic strains.arrow_forward
- What are the common pathogens isolated from stool samples? What is the difference between a coliform bacterium and a noncoliform enteric bacterium? What diagnostic test differentiates Proteus and Providencia species from other Enterobacteriaceae? How would you differentiate between serotypes of E. coli? Are the gram-negative enteric bacilli fastidious organisms? Would they survive well outside of the body? If so, what significance would this have in their transmission? Why is serotyping particularly important in Salmonella infections and typhoid fever?arrow_forwardHow does Mycobacterium tuberculosis gain access through that preferred portal of entry Explain how the Mycobacterium tuberculosis is able to evade innate human host defenses that prevent this from occurring. discuss specific components of your pathogen. (Examples may include capsules, cell wall components, exoenzymes, antigenic variation and penetration of the host cell cytoskeleton.)arrow_forwardApproximately 50% of the world’s population is colonised by Helicobacter pylori (H. pylori), yet only a fraction of the population develops gastric ulcers. A. Why is there a discrepancy between the frequency of H. pylori colonization and the frequency of gastric ulceration? Is H. pylori colonization responsible for gastric ulcers? B. Should a vaccine against H. pylori be developed and administered for everyone? Justify your reasoning.arrow_forward
- Why are there so many deaths from influenza when it is generally a mild disease?arrow_forwardShow a diagram showing the process of Mycobacterium tuberculosis on a cellular levelarrow_forwardKlebsiella Pneumoniae produces a capsule: How does klebsiella pneumonia contribute to the virulence of the pathogen?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Comprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage Learning
Comprehensive Medical Assisting: Administrative a...
Nursing
ISBN:9781305964792
Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa
Publisher:Cengage Learning
Bacterial Genomics and Metagenomics; Author: Quadram Institute;https://www.youtube.com/watch?v=_6IdVTAFXoU;License: Standard youtube license