export_bact test 6 Flashcards
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Fusobacteriumnecrophroum
Usual cause of hepatic abscesses in feedlot cattle
Clostridium perfringens Type A, Clostridiums perfringens type CClostridium difficile
According to the required reading, what are the 3 most common clostridium involved in diarrhea diseases in baby pigs
Porphyromonas, Prevoteilla
2 genera that contain most of the species of Black-pigmented obligately anaerobic bacteria
Clostridium botulinum type C
You are a wildlife vet in oregon. You are studying the cause of death of 1000 ducks in some shallow ponds in a wildlife refuge. The major symptom you saw was a flaccid paralysis w/o recovery in the birds. One bacteria known to cause this type of disease is?
Clostridium tetani
This agent causes a toxin that will cause a generalized rigid spastic paralysis of skeletal muscle in affected dogs
Clostridium haemolyticum
Fever, anemia, hemoglobinuria were observed in 4 cows from a herd of 50 Holstein cows in Wisconsin. Lesions(one cow died) of anemia and a large liver infarct were seen at necropsy. Large gram positive sporeforming rods were isolated from liver on anaerobic culture
Clostridium botulinum Type C
This agent produces a toxin that causes a generalized flaccid paralysis in ducks and other avian species when ingested from environmental sources
Clostridium perfringens Type D
This gram positive obligately anaerobic sporeforming bacteria is the cause of one type of bovine enterotoxemia in feedlot cattle that usually results in sudden death. In the live animal, it is characterized by symptoms of CNS disease
Clostridium novyi
The cause of infectious necrotic hepatitis in cattle
Clostridium piliforme
Animal: 3 wk old foal in MO
Symptoms: Foal died suddenly
Lesions: Multiple foci of hepatic necrosis were seen
Lab: No growth on aerobic blood agar
Histo: Large filamenious bacteria arranged in parallel fashion in hepatocytes were seen on a silver stain of a liver lesion
Clostridium perfringens Type A
Bacteria commonly associated w/ canine hemorrhagic gastroenteritis
Clostridium Perfringens Type C
This agent produces a toxin that causes a necrosis of intestinal epithelium in neonatal foals
Clostridium piliforme
Considered to be the cause of Tyzzer’s disease in mice
Clostridium botulinum Type B
Animal: well-nourished 3 week old foal in KY
Syptoms: Generalized flacid paralysis of major skeletal muscele masses
Foal rfails to respond to stimuli
Lesions: gastric ulcers were observed
Clostridium perfringens type C
Animals: two neonatal calves
Symptoms and lesions> sudden death, small intestine had signs of a necrotic bloody enteritis
Lab: large gram positive rods observed in direct smear
Bacillus anthracis
Animals: Group of 50 yearling cattle in Tx
Symptoms: sudden death in 2 animals
Necropsy: blood didn’t clot, spleen is enlarged
Lab: Large sporeforming gram positive rod grew on primary aerobic culture
Clostridium perfringens Type A
Animal: 3 yr old Beagle in Columbia
Symptoms: Dog is in acute shock and has a bloody diarrhea
Lab: Direct smear of bloody feces, large gram positive rods on majority population
Fusobacteriumnecrophorum
and
Porphyromonas levii
These 2 species of bacteria act as synergistic agents in pathogenesis of acute foot rot
Bacillus anthracis
This agent is the cause of anthrax in hores
Clostridium chauvoei
Animal: Yearling well-nourished steer in Missouri
Symptoms: sudden death
Lesions: Gas bubbles under skin of left hidnd leg, large dry dark area in muscle of the leg
Your diagnosis: Blackleg
Clostridium difficile
This species of gram positive sporeforming rod was originally associated w/ antibiotic induced overgrowth digestive tract disease in humans. Subsequently it was identified as a cause of the same type of disease in lab animals and has recently ibeen identifed as a cause of a severe hemorrhagic necrotizing enterocolitis in neonatal foals
Bacillus anthracis
Clostridium botulinum type A
Two bacteria from 2 different genera that are considered by the CDC to be class A bioterrorism agents
Fusobacteriumnecrophorum
Animals: herd of 200 dairy cows in MO
Symptoms: chronic lameness in about 50 of the cows w/ involvement of 2-4 feet
Lesions: interdigital necrosis and chronic destruction of the bulbs of the feet
Diagnosis?
Propionibacterium acnes
This agent is commonly used in products sold as immunomodulators
Binary fission
Term that would describe the method of reproduction of Bacillus anthracis
Dipicolinic acid
Compound found in the core of endospores that may be responsible for its environmental resistance
Septate hyphae
The type of hyphae that are characteristic of the Deutoromycetes
Catalase
Superoxide dismutase
These 2 enzymes produced by certain bacteria protect them from toxic oxygen containing compounds produced when oxygen is the terminal electron acceptor in energy metabolism
Gingivitis
Inflammation of the gum tissue of the mouth
Deutoromycetes
This form class contains most of the fungi pathogenic to animals
Obligately anaerobic bacteria
How would Clostridium perfringens be classified in regards to utilization of oxygen in their environment?
Gangliosides
These gylcosphingolipids are components of the cell plasma membrane which modulate cell signal transduction events
Cytochrome systema
These proteins are important in electron transport in the presence of oxygen
Myositis
Inflammation of the muscles
Endemic
Term referring to a persistence of infection or disease in an animal population at a more or less constant low level
Reducing agents
These compounds are used to remove oxygen from media
Eh
Term that is used to express oxidation reduction potentials
Chitin
This compound is a structural component of the cell wall of fungi but not of bacteria
Embden Meyerhoff pathway
This biochemical pathway is responsible for anaerobic glycolysis of glucose
Anoxia
If an animal died due to a lack of oxygen in his system, we would say this animal died of?
Prebiotics
Complex carbs that are given to stimulate the growth and/or activity of bacteria in the digestive system which are beneficial to the health of the body
Prebiotics
Complex carbs tat are given to stimulate the growth and or activity of bacteria in the digestive system which are beneficial to the health of the body
Crepitation
A crunching crackling sensation that is felt w/ gas production by bacteria in tissues
Pyogenic
Bacterial infections that are characterized by pus formation and abscesses
Endotoxin
When a label on an injectable vial states that the contents are pyrogen free it means that the contents do not contain?
Ergosterol
This compound is in the plasmalemma but not in mammalian cell structures
Conjugation
The name for the process which refers to the transfer of genetic elements b/t bacteria that is mediated by bacterial pili
Krebs cycle
This biochemical pathway is the major energy producing pathway in facultatively anaerobic bacteria but is not present in obiligately anaerobic bacteria
Liver
What organ serves as the principal site of infection for Clostridium haemolyticum infection in cattle?
Liver
What is the organ that serves as the principal site of infection for Clostridium piliforme infection in mice?
SI
What is the organ that serves as the principal site of infection for neonatal enterotoxemia in pigs?
LI
What is the organ that serves as the principal site of infection of clostridium difficile infections in humans?
Commercial toxoid
You have an owner who wishes to prevent necrotic abomasitis in his calves
Commercial antitoxin
You have just castrated a horse w/ an unknown vaccination history. You wish to prevent tetanus
Commercial bacterin or whole culture bacterin
You have an owner who wishes to prevent periodontal disease in his dogs
Commercial toxoid
You have an owner who wishes to prevent toxicoinfectious botulism in his horses
Commercial toxoid
You wish to vaccinate a horse for long term prevention of tetanus
Commercial Modified or avirulent live vaccine
You have horses that you want to vaccinate to prevent anthrax
Commercial bacterin or whole culture bacterin
You have an owner who wishes prevent blackleg in his feedlot steers
Commercial bacterin toxoid combo
You have an onwer who wishes to vaccinate his cows to prevent neonatal enterotoxemia in his calves
Jugular blood sample
The best tissue for bacteriolgocialcultureto send to a diagnostic lab from an 800 lb dead steer that you suspect has anthrax would be?
Demonstrationof bacteria on histopathology
Which of the following would be the most important procedure in the routine confirmation of a diagnosis of Tyzzer’s disease in a foal
Bacteriocidal and time dependent
Cephalosporins in regards to use in the patient and action on the bacteria are?
Cell wall synthesis
Cephalosporins in regards to site of action in the bacteria affects?
Gram negative non-sporeforming anaerobic rod
A description of Bacteroides fragilis would be?
Growth stimulant
Carbon dioxide
Catalyst
Palladium
Chemical indicator of Eh
Resazurin
Reducing agent
sodium Thioglycoliate
Endotoxins
The inciting lesions allowing bacterial overgrowth in canine hemorrhagic gastroenteritis are probably due to this toxin
Lethal factor
A major toxin of Bacillus anthracis
Epsilon toxins
Major toxin produced by Clostridium perfringens Type D
Beta toxins
Major toxin produced by Clostridium perfringens type C
Metronidazole
Drug of choice to treat a Clostridium difficile inefection in a horse