What is sequestration in malaria parasite?

Sequestration, the adherence of infected erythrocytes containing late developmental stages of the parasite (trophozoites and schizonts) to the endothelium of capillaries and venules, is characteristic of Plasmodium falciparum infections.

What is tissue sequestration?

This adherence of infected red blood cells (irbcs) to host tissue, also known as sequestration, occurs in small capillaries and post-capillary venules of specific organs such as the brain and lungs.

What is Cytoadherence definition?

Definition. Cytoadherence is the property of Plasmodium falciparum-infected RBC to adhere to various host cell types such as endothelial cells and uninfected red cells, causing the parasite to sequester in deep vascular beds and avoid splenic clearance.

What is malaria Rosetting?

Rosetting, defined as the binding of two or more uninfected red blood cells (rbc) to an infected rbc, occurs when malarial parasites mature, to trophozoites and schizonts, in the second half of their asexual development. Rosetting is believed to be an important factor in the development of cerebral malaria.

What is sequestration in medicine?

Sequester: 1. In medicine, to set apart, detach or separate a small portion of tissue from the rest. May be naturally occurring or iatrogenic. 2. In bone, for a piece of dead bone to separate from the sound bone.

What is the pathophysiology of malaria?

All the manifestations of malarial illness are caused by the infection of the red blood cells by the asexual forms of the malaria parasite and the involvement of the red cells makes malaria a potentially multisystem disease, as every organ of the body is reached by the blood.

What is the implication of Cytoadherence in a malarial infection?

Cytoadherence of infected red blood cells to brain endothelium is causally implicated in malarial coma, one of the severe manifestations of falciparum malaria.

What is black water fever in microbiology?

Blackwater fever is a complication of malaria infection in which red blood cells burst in the bloodstream (hemolysis), releasing hemoglobin directly into the blood vessels and into the urine, frequently leading to kidney failure.

What is rosette leaf?

In botany, a rosette is a circular arrangement of leaves or of structures resembling leaves. Their structure is an example of a modified stem in which the internode gaps between the leaves do not expand, so that all the leaves remain clustered tightly together and at a similar height.

What is rosette stage of Plasmodium vivax?

Rosettes form during the blood stage of malaria infection, when erythrocytes infected with mature asexual parasites (pigmented trophozoites and schizonts) bind spontaneously to uninfected erythrocytes to form clusters of cells (Fig. 1).

What does sequestration mean in biology?

Biological (or terrestrial) sequestration involves the net removal of CO2 from the atmosphere by plants and micro-organisms and its storage in vegetative biomass and in soils.