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Vibrio cholerae is a species of Gram-negative, ... V. cholerae pathogenicity genes code for proteins directly or indirectly involved in the virulence of the bacteria.
CAI-1 has no readily apparent recordable discovery date, but some of the earliest studies on autoinducers within and the quorum-sensing nature of V. cholerae was done by the Microbiology department of Harvard Medical school. [1] Prior to the study of V. cholerae, researchers obtained data from a close relative, Vibrio harveyi.
Pathogenic Vibrio species include V. cholerae (the causative agent of cholera), V. parahaemolyticus, and V. vulnificus. V. cholerae is generally transmitted by contaminated water. [3] Pathogenic Vibrio species can cause foodborne illness (infection), usually associated with eating undercooked seafood. [18]
Cholera (/ ˈ k ɒ l ər ə /) is an infection of the small intestine by some strains of the bacterium Vibrio cholerae. [4] [3] Symptoms may range from none, to mild, to severe. [3]The classic symptom is large amounts of watery diarrhea lasting a few days. [2]
Cholera toxin (also known as choleragen and sometimes abbreviated to CTX, Ctx or CT) is an AB5 multimeric protein complex secreted by the bacterium Vibrio cholerae. [1] [2] CTX is responsible for the massive, watery diarrhea characteristic of cholera infection. [3] It is a member of the heat-labile enterotoxin family.
Inhabitants of fresh or salt water, several species are pathogenic, including the type species Vibrio cholerae, which is the agent responsible for cholera. Most bioluminescent bacteria belong to this family, and are typically found as symbionts of deep-sea animals. [1]
In Vibrio cholerae T6SS studies, it has been observed that serotype O37 has high vas gene expression. Serotypes O139 and O1 on the other hand exhibit the opposite, with markedly low vas gene expression. It has been suggested that the differences in expression are attributable to differences in quorum-sensing levels.
Nonetheless, Koch was already aware that the causative agent of cholera, Vibrio cholerae, could be found in both sick and healthy people, invalidating his first postulate. [ 6 ] [ 9 ] Since the 1950s, Koch's postulates have been treated as obsolete for epidemiology research, but they are still taught to emphasize historical approaches to ...