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Lymphatic filariasis is a human disease caused by parasitic worms known as filarial worms. [2] [3] Usually acquired in childhood, it is a leading cause of permanent disability worldwide, impacting over a hundred million people and manifesting itself in a variety of severe clinical pathologies [6] [7] While most cases have no symptoms, some people develop a syndrome called elephantiasis, which ...
Brugia malayi is a filarial (arthropod-borne) nematode (roundworm), one of the three causative agents of lymphatic filariasis in humans. Lymphatic filariasis, also known as elephantiasis, is a condition characterized by swelling of the lower limbs.
Archaeological evidence for elephantiasis for example extends back some 3000 years, by which time apparently it already was no novelty. [6] Currently perhaps some hundreds of millions of people worldwide, mainly in tropical regions, are infected with pathogenic species of filariae.
Patrick Manson discovered the life cycle of elephantiasis, caused by nematode worms transmitted by mosquitoes, in 1877. Manson further predicted that the malaria parasite, Plasmodium, had a mosquito vector, and persuaded Ronald Ross to investigate. Ross confirmed that the prediction was correct in 1897–1898.
Elephantiasis, often incorrectly called elephantitis, is the enlargement and hardening of limbs or body parts due to tissue swelling . [ 1 ] [ 2 ] It is characterised by edema, hypertrophy , and fibrosis of skin and subcutaneous tissues, due to obstruction of lymphatic vessels ( lymphedema ). [ 2 ]
Filariasis, is a filarial infection caused by parasitic nematodes (roundworms) spread by different vectors.They are included in the list of neglected tropical diseases.. The most common type is lymphatic filariasis caused by three species of Filaria that are spread by mosquitoes.
Parasitic worms cannot reproduce entirely within their host's body; they have a life cycle that includes some stages that need to take place outside of the host. [3] Helminths are able to survive in their mammalian hosts for many years due to their ability to manipulate the host's immune response by secreting immunomodulatory products. [4]
This condition is also known as lymphscrotum or elephantiasis scroti. See also. Life cycle of Wuchereria bancrofti, a parasite that causes lymphatic filariasis.