Gram-Negative Bacilli of Medical Importance

These flashcards cover key concepts related to Gram-Negative Bacilli of medical importance, including their characteristics, associated diseases, and treatment options.

What is a key characteristic of Gram-Negative Non-enteric Bacilli?

They have an outer membrane lipopolysaccharide, which acts as an endotoxin.

Which genus is known for opportunistic pathogenic bacteria capable of causing infections, particularly in immunocompromised individuals?

Pseudomonas.

What are the two species of Brucella and their associated animals?

Brucella abortus (cattle) and Brucella suis (pigs).

What disease is caused by Francisella tularensis?

Tularemia.

What is the main reservoir for Pseudomonas aeruginosa?

Soil and water.

Which bacteria causes whooping cough?

Bordetella pertussis.

What are the pathogenic effects of Escherichia coli?

Includes strains causing diarrhea, urinary tract infections, and neonatal meningitis.

What are the virulence factors of Yersinia pestis that contribute to its pathogenicity?

Capsular and envelope proteins protect against phagocytosis and foster intracellular growth.

What is the treatment for typhoid fever caused by Salmonella serotype Typhi?

Ciprofloxacin or ceftriaxone.

What is a common clinical manifestation of Shigellosis?

Fever, nausea, abdominal cramps, and bloody diarrhea.

What is the significance of the H, K, and O antigens in Gram-negative bacteria?

They contribute to pathogenicity and trigger the immune response.