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EXOTOXIN [7 records]

Record 1 2016-10-28

English

Subject field(s)
  • Microbiology and Parasitology
  • Bacterial Diseases
DEF

A bacterial species that produces a soluble exotoxin and is the cause of cholera in humans; it is the type species of the genus Vibrio.

CONT

Certain bacteria produce toxins that cause the cells in the intestinal wall to secrete electrolytes and water. One such toxin, produced by the bacterium Vibrio cholerae, is responsible for the watery diarrhea that is the main symptom of cholera.

French

Domaine(s)
  • Microbiologie et parasitologie
  • Maladies bactériennes
CONT

Le Vibrio cholerae : agent responsable du choléra. Vibrio cholerae est une bactérie à Gram négatif aérobie - anaérobie, vivant dans les eaux douces ou dans l'eau de mer. Elle produit l'entérotoxine responsable du choléra. Il existe deux biotypes de Vibrio cholerae : le biotype 01 et le biotype EL Tor.

Spanish

Campo(s) temático(s)
  • Microbiología y parasitología
  • Enfermedades bacterianas
DEF

Bacteria causante del cólera.

Save record 1

Record 2 2010-05-04

English

Subject field(s)
  • Animal Diseases
DEF

Any disease or lesion with which Fusobacterium necrophorum is associated.

OBS

It includes necrotic laryngitis [...], necrotic stomatitis of calves, necrotic rhinitis of pigs [...], foot rot of cattle [...], foot abscess of sheep [...], postparturient necrosis of the vagina and uterus, focal necrosis of the liver of cattle and sheep, quittor of horses [...], and numerous other necrotic lesions in ruminants and, less commonly, in pigs, horses, fowl, and rabbits. F. necrophorum is probably a secondary invader rather than a primary etiologic agent and is usually present as part of a mixed infection. However, its necrotizing exotoxin undoubtedly plays a role in the production of characteristic lesions. It is part of the normal flora of the mouth, intestine, and genital tract of many herbivores and omnivores and it is widespread in the environment.

French

Domaine(s)
  • Maladies des animaux
DEF

Pathologie provoquée par une bactérie : le bacille de la nécrose Spherophorus (ou Fusobacterium) necrophorum, qui agit au niveau de la peau, des muqueuses et même d'autres organes, en y faisant apparaître des lésions et des suppurations.

Spanish

Campo(s) temático(s)
  • Enfermedades de los animales
DEF

Enfermedad [...] producida por una bacteria llamada Fusobacterium necrophorum, está considerada [como] una patología secundaria a otras enfermedades.

CONT

[La] necrobacilosis [se caracteriza por presentar] lesiones [...] en el labio inferior [que con el tiempo] pasan a ser abscesos que contienen un material purulento [con] una cápsula dura, fibrosa, con poca tendencia a romperse y drenar. [Cuando] la enfermedad progresa a la ulceración y a la necrosis en la región de la cara, cabeza y cuello de los tejidos subcutáneos [y] el hígado y los pulmones se ven afectados, el animal muere en unas semanas.

Save record 2

Record 3 2006-11-22

English

Subject field(s)
  • Immunology
DEF

The binding of an antibody with an antigen of the type that stimulated the formation of the antibody(reversible phenomenon, occurring in vitro or in vivo, resulting in agglutination, precipitation, complement fixation, greater susceptibility to ingestion and destruction by phagocytes, or neutralization of an exotoxin.

OBS

The biologic or serologic consequences of this interaction depend upon the location and form of the antigen, the physical state of the antibody, the site at which the reaction occurs, and the physical and biologic conditions that surround the interaction.

French

Domaine(s)
  • Immunologie
CONT

Chaque réaction antigène-anticorps (Ag-Ac) se caractérise par : la spécificité (identification de l'Ag reconnu) et l'affinité (force de la liaison entre l'Ag et l'Ac). Les anticorps de forte affinité relachent difficilement in vivo l'antigène reconnu (on peut provoquer artificiellement in vitro la rupture du complexe Ag-Ac, par chauffage par exemple) tandis que les anticorps de faible affinité oscillent en permanence entre une forme libre (sans Ag) et une forme complexée à l'Ag.

Spanish

Campo(s) temático(s)
  • Inmunología
DEF

Reacción producida por la unión de los anticuerpos a los antígenos mediante enlaces intermoleculares.

CONT

La unión antígeno-anticuerpo es específica, cada anticuerpo reconoce y se une a un determinado antígeno. Esta unión se realiza por medio de uniones intermoleculares entre el antígeno y la zona del anticuerpo, y da lugar al complejo antígeno-anticuerpo según el modelo llave-cerradura. Las reacciones antígeno-anticuerpo tienen diversas consecuencias y existen varios tipos: [...] de precipitación antígeno + anticuerpo, [...] de aglutinación, [...] de neutralización, reacción de opsonización.

CONT

En las reacciones antígeno-anticuerpo se distinguen 2 fases; la primera consiste en la unión del antígeno con el anticuerpo y la segunda en las manifestaciones que resultan de dicha unión. La primera fase se realiza por la combinación de áreas pequeñas tanto del antígeno como del anticuerpo, denominadas respectivamente determinante antigénico y sitio activo, que al unirse forman un complejo antígeno-anticuerpo. La reacción es reversible, siguiendo, por consiguiente, la ley de acción de masas y existen factores externos que pueden modificar dicha unión, como son: el pH, la temperatura y la fuerza iónica.

Save record 3

Record 4 2004-05-19

English

Subject field(s)
  • Biological Sciences
  • Microbiology and Parasitology
  • Biochemistry
DEF

A toxin released by a bacterium into the medium in which it grows. Frequently very toxic, e.g. neurotoxins which destroy cells of the nervous system, haemolytic toxins which lyse red blood cells.

French

Domaine(s)
  • Sciences biologiques
  • Microbiologie et parasitologie
  • Biochimie
DEF

Substance toxique soluble produite par certains micro-organismes et trouvées dans leur milieu de croissance.

CONT

L'exotoxines sont sécrétées vers l'extérieur et diffusent dans le milieu ambiant. Elles provoquent dans l'organisme des lésions variées

Spanish

Campo(s) temático(s)
  • Ciencias biológicas
  • Microbiología y parasitología
  • Bioquímica
DEF

Toxina difundida al medio por bacterias vivas.

Save record 4

Record 5 2001-02-12

English

Subject field(s)
  • Toxicology
OBS

enterotoxin : An exotoxin that is protein in nature and relatively heat stable, produced by staphylococci, primarily by coagulase-positive Staphylococcus pyogenes var. aureus. Enterotoxin, which on ingestion produces violent vomiting and diarrhea, is the primary factor in staphylococcal food poisoning.

OBS

staphylococcal enterotoxin: term(s) extracted from the "Disarmament and Peace Keeping" glossary with the permission of the United Nations Office at Geneva.

French

Domaine(s)
  • Toxicologie
OBS

entérotoxine staphylococcique : terme(s) tiré(s) du lexique «Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.

Spanish

Save record 5

Record 6 1996-11-06

English

Subject field(s)
  • Microbiology and Parasitology
CONT

Dual infections with Staphiloccus aureus and Streptococcus pyogenes causing toxic shock syndrome : possible synergistic effects of toxic shock syndrome 1 and streptococcal pyrogenic exotoxin C.

French

Domaine(s)
  • Microbiologie et parasitologie

Spanish

Save record 6

Record 7 1994-03-10

English

Subject field(s)
  • Microbiology and Parasitology
  • Human Diseases
OBS

Crystalline type A toxin has a molecular weight of 900,000, and a neurotoxin of molecular weight 150,000 can be separated from it.

OBS

botulinum toxin : The protein exotoxin released by Clostridium botulinum.

French

Domaine(s)
  • Microbiologie et parasitologie
  • Maladies humaines
OBS

Le traitement à la toxine botulinique A semble être un moyen sans danger et efficace de relâcher temporairement le blépharospasme.

Spanish

Save record 7

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