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

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 ?
When faecal samples containing DNA of Ascaris lumbricoides, hookworms, or Trichuris trichiura eggs (common parasites that often co-occur with S.
Prevalence, proportion, and intensity of STHn (%) STH infection Positive 31 (34.4) Negative 59 (65.6) Type of worm Ascaris lumbricoides 18 (20) Trichuris trichiura 4 (4.4) Hookworm 0(0) Mixed infection 9 (10) None 59 (65.6) Intensity of Ascaris lumbricoides Light 22 (24.4) Moderate 4 (4.4) Heavy 0(0) None 64 (71.1) Intensity of Trichuris trichiura Light 13 (14.4) Moderate 0(0) Heavy 0(0) None 77 (85.6) Total 90 (100) Table 3: Risk factors of STH infection in preschool children.
-- -- -- Giardia lamblia 57 (6,31%) 25 (2,76%) 28 (3,10%) Ancilostomideos -- -- -- Ancylostoma braziliense -- -- -- Ascaris lumbricoides 3 (0,33%) 1 (0,11%) 5 (0,55%) Enterobius vermiculares 1 (0,11%) 1 (0,11%) -- Trichuris trichiura -- 1 (0,11%) -- Trichocephalus trichiurus 1 (0,11%) 2 (0,22%) 3 (0,33%) Fasciola hepatica -- -- -- Hymenolepis nana 1 (0,11%) 3 (0,33%) 1 (0,11%) Taenia sp.
The most common intestinal parasites in males were; Giardia lamblia, Entamoeba histolytica, Ascaris lumbricoides and Trichuris trichiura with prevalence rates 1.13 %, 0.87 %, 0.73 % and 0.37 %, while in females were; Ascaris lumbricoides, Entamoeba histolytica, Trichuris trichiura and Giardia lamblia with prevalence rates 1.12 %, 0.69 %, 0.69 % and 0.48 %, respectively.
Strongyloides stercoralis, Trichuris trichiura and Enterobius vermicularis infection in human population Bermo coal field area of Bihar.
33,9 16,3 16,7 Helmintos Hymenolepis nana 3,2 0,0 5,0 Enterobius vermicularis 37,7 21,7 20,0 Ascaris lumbricoides 5,2 0,0 5,0 Anquilostomideos 0,0 0,0 0,0 Trichuris trichiura 1,9 0,0 1,7 Strongyloides stercoralis 0,2 0,0 0,0 Provincia Especie Entre Rios Formosa La Pampa Protozoos comensales Entamoeba coli 5,6 20,4 6,9 Endolimax nana 4,5 12,9 1,7 Enteromonas hominis 0,4 0,0 0,0 Chilomastix mesnili 0,0 1,1 0,0 Iodamoeba butschlii 1,1 1,1 0,0 Protozoos patogenos Giardia lamblia 11,9 31,2 15,5 Blastocystis sp.
The company said EMVERM is indicated for the treatment of Enterobius vermicularis (pinworm), Trichuris trichiura (whipworm), Ascaris lumbricoides (common roundworm), Ancylostoma duodenale (common hookworm), Necator americanus (American hookworm) in single or mixed infections.
Pathogens identified were Ascaris lumbricoides (10/31 (32.3%)), Giardia lamblia (18/31 (54.8%)), Blastocystis hominis (1/31 (3.2%)), Enterobius vermicularis (2/31 (6.5%)), Trichuris trichiura (1/31 (3.2%)), Entamoeba coli (8/31 (25.8%)) and Schistosoma haematobium (3/31 (9.4%)).
Lumbricoides, Trichuris trichiura, Ancylostoma Duodenale and Necator Americanus affect approximately 250 million, 46 million and 151 million people respectively.13 About half the inhabitants in south India14 and 50% of school-attending children of the tribal areas of central India15 are victims of A.
Necator americanus (hookworm) and other helminth infections such as Ascaris lumbricoides, Trichuris trichiura, Ancylostoma duodenale, schistosomiasis, and filariasis may offer novel therapies to modulate specific inflammatory pathways found in allergic and autoimmune disease.