Escherichia strains - Pathotypes

Question 1

Types of Pathogenic Escherichia Coli strains (6)

Answer 1

• EPEC
• EIEC
• ETEC
• EHEC (VTEC)
• NTEC
• UPEC

E-PITcH NoT UP ExCactly

E PITH NT UP EC

Question 2

EPEC

Answer 2

• Produces Adhesins and Intimins
• Colonising mucosal surfaces

Cause
* Destruction and Atrophy of Enterocytes

Question 3

ETEC

Answer 3

• Fimbrial antigens
• F2 and F3 found in humans
• F4 and F5 found in pigs, calves and lambs
• Produces Enterotoxins -LT and ST

Causes
* Diarrhea without cell damage

Question 4

EIEC

Answer 4

• Affect Enterocytes and Intestinal mucosa
• Invade the Lymphatic system

Question 5

EHEC (VTEC)

Answer 5

• Oedema disease in Pigs
• Hemorrhagic Enterocolitis in Calves
• Haemolytic-Uremic Syndrome in Humans
• Produce Verotoxins

Question 6

NTEC

Answer 6

• Produce Cytotoxic Necrotizing Factors
• Damage Enterocytes and Blood Vessels

Question 7

UPEC

Answer 7

• Produces Adhesins
• Endotoxins
• Exotoxins

Cause
* Cystitis
* Metritis
* Mastitis