Related Experiment Video
Updated: Aug 15, 2026

07:20
Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR
Published on: February 4, 2018
Extralymphatic disease due to bancroftian filariasis
G Dreyer1, P Dreyer, W F Piessens
1Departamento de Parasitologia, Centro de Pesquisas Aggeu Magalhães (CPqAM), Fundação Oswaldo Cruz.
Summary
Bancroftian filariasis, caused by Wuchereria bancrofti, can lead to extralymphatic diseases beyond lymphatic damage. Recognizing these conditions is crucial for proper diagnosis and treatment of filarial infections.
Area of Science:
- Tropical medicine
- Parasitology
- Clinical pathology
Background:
- Filariasis, caused by Wuchereria bancrofti, Brugia malayi, or B. timori, impacts lymphatic vessels.
- Extralymphatic pathology is increasingly recognized in bancroftian filariasis, particularly renal damage in asymptomatic carriers.
Purpose of the Study:
- To highlight the prevalence and significance of extralymphatic manifestations in bancroftian filariasis.
- To increase awareness among clinicians and students for improved diagnosis and treatment.
- To emphasize the need for further research into extralymphatic filarial disease.
Main Methods:
- Review of clinical syndromes associated with extralymphatic filarial disease.
- Discussion of potential pathomechanisms underlying extralymphatic manifestations.
Main Results:
- Ultrasonography allows detection of adult worms, focusing attention on lymphatic pathology.
- Renal damage in asymptomatic microfilaremic carriers underscores extralymphatic involvement.
Conclusions:
- Extralymphatic pathology is a significant, often overlooked, aspect of bancroftian filariasis.
- Early recognition and management of extralymphatic disease are essential.
- Further research is required to fully understand and address extralymphatic filariasis.
Related Concept Videos
Pulmonary Tuberculosis III
Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
The first classification is based on the development of the disease, and it includes the following categories:
Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
Leishmaniasis
Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...
Toxoplasmosis
Toxoplasmosis, a zoonotic disease caused by the protozoan Toxoplasma gondii, poses significant public health challenges globally due to its high seroprevalence and varied clinical manifestations. As an obligate intracellular parasite, T. gondii can infect all warm-blooded vertebrates, but felids are its only definitive hosts, shedding unsporulated oocysts into the environment. Humans typically acquire the infection through ingestion of tissue cysts in undercooked meat or oocysts from...
American Trypanosomiasis
Chagas disease, or American trypanosomiasis, is a vector-borne parasitic infection caused by Trypanosoma cruzi, a flagellated protozoan (kinetoplastid) of the family Trypanosomatidae. The disease is endemic in Latin America, although cases are increasingly reported worldwide due to human migration. Transmission most commonly occurs when feces of infected triatomine bugs contaminate bite wounds or mucosal surfaces; additional routes include congenital, transfusional, transplant-related, and oral...
Amebiasis
Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...

