Dictionary > Subcutaneous filariasis

Subcutaneous filariasis

Definition
noun
A type of filariasis caused by adult filarial worms that dwell in the subcutaneous layer of the skin
Supplement
Filariasis is a disease associated with the infection of filariae within the definitive host, e.g. human host. It may be classified into three groups: (1) lymphatic filariasis, (2) subcutaneous filariasis, and (3) serous cavity filariasis.
In subcutaneous filariasis, the filariasis is caused by parasitic roundworms that occupy the subcutaneous layer of the skin (fat layer).
The roundworms that have been associated with subcutaneous filariasis are Loa loa, Mansonella streptocerca, and Onchocerca volvulus.
Loa loa (also called eye worm) is a filarial nematode common in Africa and India. Its larvae use horseflies (Chrysops) as intermediate hosts. These insects transmit the worm to a definitive host, e.g. humans, by insect bite. Filariasis caused particularly by Loa loa is called loiasis or Loa loa filariasis.
Mansonella streptocerca is mostly found in West and Central Africa. Its intermediate host is a midge insect (Culicoides sp.). The definitive hosts are humans and chimpanzees.
Onchocerca volvulus is a filarial nematode that can cause river blindness (onchocerciasis) and is found mostly in Africa. The intermediate host of this worm is the black fly. The only known definitive host is humans. Infestation with this worm results in blindness when the corneal stroma thickens due to chronic corneal inflammation.
See also:


You will also like...

Structural depiction of catalase, an enzyme
Protein Activity and Cellular Metabolism

Proteins have a crucial role in various biological activities. Get to know how proteins are able to perform as enzymes, ..

The Human Physiology
The Human Physiology

Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..

Sensory systems
Sensory Systems

A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..

DNA molecule
Genetic Control – On and Off Genes

Genes are the blueprint of our bodies, a blueprint that creates a variety of proteins essential to any organism's surviv..

Lotic community of algal species
Lotic Communities & Algae

Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..

Freshwater Ecology
Freshwater Ecology

Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..