Trichuris trichiura


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Related to Trichuris trichiura: Enterobius vermicularis

Trich·u·ris trich·i·u·'ra

the whipworm of humans, a species that causes trichuriasis; the body is filiform and slender in the anterior three fifths, and more robust posteriorly; females are 4 or 5 cm long, males are shorter (with coiled caudal extremity and a single eversible spicule); eggs are barrel-shaped, 50-56 mcm by 20-22 mcm, with double shell and translucent knobs at each of the two poles; humans are the only susceptible hosts and usually acquire infection by direct finger-to-mouth contact or by ingestion of soil, water, or food that contains larvated eggs (development in the soil takes 3-6 weeks under proper conditions of warmth and moisture, hence distribution is chiefly tropical); larvae escape from eggs in the ileum, mature in approximately a month, and then pass directly into the cecum without undergoing a parenteral migration as occurs with Ascaris lumbricoides; adults may persist for 2-7 years.

Trichuris trichiura

a species of whipworms, commonly found in warm, moist regions of the world. Ingestion of whipworm eggs results in infection in humans. The parasites live mainly in the cecum or large intestine. Heavy infections cause abdominal pain and diarrhea. Very heavy infections may result in anemia because of intestinal blood loss.

Trichuris trichiura

Whipworm Parasitology A common pathogen believed to infect 750 million people worldwide. See Trichiuriasis.

Tri·chu·ris tri·chi·u·ra

(tri-kyūr'is tri-kī-yū'ră)
The whipworm of humans; a species that causes trichuriasis. Its body is filiform and slender in the anterior three fifths, and more robust posteriorly. Females are 4-5 cm long, males are shorter (with coiled caudal extremity and a single eversible spicule). Eggs are barrel shaped, 50-56 by 20-22 mcm, with double shell and translucent knobs at each of the two poles. Humans are the only susceptible hosts and usually acquire infection by direct finger-to-mouth contact or by ingestion of soil, water, or food that contains larvated eggs. (Development in the soil takes 3-6 weeks under proper conditions of warmth and moisture; hence, distribution is chiefly tropical). Larvae escape from eggs in the ileum, mature in approximately 1 month, and then pass directly into the cecum without undergoing a parenteral migration such as occurs with Ascaris lumbricoides; adults may persist 2-7 years.
Enlarge picture
TRICHURIS TRICHIURA: (A) adult female (×4), (B) egg (×500)
Enlarge picture
TRICHURIS TRICHIURA: (A) adult female (×4), (B) egg (×500)

Trichuris trichiura

A species that infests humans when the ova that have undergone incubation in the soil are ingested. The larvae develop into adults, which inhabit the large intestine. Symptoms of infestation include diarrhea and abdominal pain. Rectal prolapse may occur if a great number of worms are present. Mebendazole is the drug of choice; albendazole or ivermectin may be of benefit.
Synonym: whipworm See: illustration
See also: Trichuris
References in periodicals archive ?
As shown in Table IV, Ascaris lumbricoides, Trichuris trichiura, Hymenolepis nana and Giardia lamblia have a significant difference between males and females; while there is no significance detected in Entamoeba histolytica.
Early childhood infection with the helminth Trichuris trichiura also reduced skin test reactivity in later childhood, even if T.
La investigacion coproparasitologica en la comunidad indigena Maxakali, establecida en el Estado de Minas Gerais, Brasil (13), sobre la incidencia de parasitosis intestinales, con 409 muestras analizadas, encontro 90,3% positivas, siendo las especies prevalentes: Entamoeba histolytica (48,9%), Ancilostomideos (37,9%), Giardia lamblia (32%), Schistosoma mansoni (23,7%), Hymenolepis nana (18,6%), Strongyloides stercoralis (5,4%), Ascaris lumbricoides (4,9%) y Trichuris trichiura (0,5%).
La prevalencia obtenida para los helmintos fue de 4,3% para Trichuris trichiura, de 2,6% para Ascaris lumbricoides y 2,6% los Ancylostomideos.
Su nivel en la sangre esta muy elevado en humanos alergicos o con parasitosis por helmintos como Necator americanus (3), Ascaris lumbricoides (3), Trichuris trichiura (4), Schistosoma mansoni (5), Trichinella spiralis (6), Fasciola hepatica (7), y por protozoos como Plasmodium falciparum (8), Plasmodium vivax (9) y Toxoplasma gondi (10).
Furthermore, feces parasitological tests were negative for Ancylostoma duodenale, Necator americanus, Ascaris lumbricoides, Giardia lamblia, Trichuris trichiura and Schistossoma mansoni for all of the individuals in the study.
Las especies parasitarias reportadas fueron las siguientes: Blastocystis hominis siendo el de mas amplia distribucion con un 49,20% seguido por Giardia lamblia con un 30,15%, Entamoeba coli con 17,47%, Endolimax nana con 15,87%, Ascaris lumbricoides presentando un 9,52%, Entamoeba histolytica con un 7,93 %, Trichuris trichiura 6,34%, Hymenolepis nana 6,34%, Trichomona hominis con 3.
After European contact parasite infections and relative abundance of the common human intestinal worms Ascaris lumbricoides and Trichuris trichiura changed significantly (Fugassa et al.
Para 1980, en Colombia, se describieron prevalencias a nivel nacional de 38,6% para Ascaris lumbricoides, 35,3% de Trichuris trichiura y 21,2% de Uncinadas.
Foi demonstrada a ocorrencia de cinco especies de helmintos (Ascaris lumbricoides, Trichuris trichiura, Ancylostoma duodenale, Enterobius vermicularis e Hymenolepis nana) e de duas especies de protozoarios (Entamoeba sp.
Loke and his colleagues analyzed a series of blood and tissue samples taken from a 34-year-old man living in California with ulcerative colitis who ingested Trichuris trichiura eggs (a roundworm that infects the lower intestine) after having researched the scientific literature.