Question

In: Biology

A) What "weapons" does Entamoeba histolytica use to invade the mucosal epithelial layer in the colon?...

A) What "weapons" does Entamoeba histolytica use to invade the mucosal epithelial layer in the colon? What virulence factors are involved and what role do they play in invasion?

B) Why do symptomatic patients shed non-infective trophozoites?

Solutions

Expert Solution

1.when the trophozoites come in contact with the epithelium layer of colon then it secretes enzymes which cause necrosis. Due to this inflammation, and lesion formation occur, as the lesion reaches the muscular layer a flask-shaped ulcer formation takes place which causes the destruction of a larger area of the intestine. Then it reaches to the submucosa which gives access to the portal circulation & causes an invasion. the virulence factor which is involved are Gal/GalNAc lectin, amebapore and proteases, for lyse, phagocytose, kill and destroy a variety of cells and tissues in the host.

2. symptomatic patients shed noninfective trophozoites because trophozoites which do not get converted into cysts get excreated.As trophozoites unable to survive outside the body and get destroyed. Even if it is ingested then it is destroyed by the acidic medium of the stomach.

gladiator answered 2 years ago
Next > < Previous

Related Solutions

1) Name the tissues layers and tissues types that are found in the mucosal layer of...
1) Name the tissues layers and tissues types that are found in the mucosal layer of the trachea 2) Name types of tissues that are found in the submucosal layer of the trachea. 3) name types of tissues that are found in the fibrocartilaginous layer of the trachea. 4) discuss the role of goblet cells and cilia in filtering inhaled air.
What percentage of individuals with colon cancer have a familial form of colon cancer? What is...
What percentage of individuals with colon cancer have a familial form of colon cancer? What is the prevalence of inherited mutations in the APC gene?
What organisms that could invade during phagocytosis and how?
What organisms that could invade during phagocytosis and how?
What are the “weapons of competition” that rival companies in ride-sharing industry can use to gain...
What are the “weapons of competition” that rival companies in ride-sharing industry can use to gain sales and market share? See Table 3.2 to help you identify the various competitive factors. (the company is UBER) Types of Competitive Weapons Primary Effects Discounting prices, holding clearance sales Lowers price (P), increases total sales volume and market share, lowers profits if price cuts are not offset by large increases in sales volume Offering coupons, advertising items on sale Increases sales volume and...
If you had only arrows as weapons: What kind of poison would you use if you...
If you had only arrows as weapons: What kind of poison would you use if you wanted to win the battle at all costs?   What kind of poison do you think would be both effective and humane to use?
Q1. What is the S-layer? How does it function and what is it's structure? Q2. What...
Q1. What is the S-layer? How does it function and what is it's structure? Q2. What benefits do gut microbes offer humans and what do humans offer gut microbes?
what is transport layer? what are the typical attacks in transport layer? what are the controls...
what is transport layer? what are the typical attacks in transport layer? what are the controls that are employed in the layer to minimize the attack or vulnerability that leads to the attack? cite references
What is the Transport Layer and what does it do?   (Please explain flow control, error management,...
What is the Transport Layer and what does it do?   (Please explain flow control, error management, and segmentation and reassembly in the Transport Layer)
Colon cancer is something that may be difficult to detect without the use of tests such...
Colon cancer is something that may be difficult to detect without the use of tests such as a colonoscopy unless the cancer is advanced and homeostasis has clearly been altered. Based on what we studied about the anatomy and the physiology of the colon, propose an explanation for why it may be difficult to detect without screening.
Colon cancer is something that may be difficult to detect without the use of tests such...
Colon cancer is something that may be difficult to detect without the use of tests such as a colonoscopy unless the cancer is advanced and homeostasis has clearly been altered. What is an explanation for why it may be difficult to detect without screening?
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT