The Occurrence of Linguatula Serrata, a Pentastomid, within the Human Eye

Rendtorff, Robert C.; Deweese, Melvin W.; Murrah, William F.

doi:10.4269/ajtmh.1962.11.762

Cited by 20 publications

(10 citation statements)

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“…However, this patient also consumed snakes regularly, so the possible direct transmission to the eye of A. grandis nymphs remains speculative. Interestingly, in case of Linguatula eye infections, ocular trauma was described in two cases prior to the onset of symptoms [14], [15]. In one case, a fly had hit the eye, and in the other a ball.…”

Section: Resultsmentioning

confidence: 99%

Ocular Pentastomiasis in the Democratic Republic of the Congo

et al. 2014

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Ocular pentastomiasis is a rare infection caused by the larval stage of pentastomids, an unusual group of crustacean-related parasites. Zoonotic pentastomids have a distinct geographical distribution and utilize reptiles or canids as final hosts. Recently, an increasing number of human abdominal infections have been reported in Africa, where pentastomiasis is an emerging, though severely neglected, tropical disease. Here we describe four ocular infections caused by pentastomids from the Democratic Republic of the Congo. Two cases underwent surgery and an Armillifer grandis infection was detected by morphological and molecular approaches. Thus far, 15 other cases of ocular pentastomiasis have been reported worldwide. Twelve cases were caused by Armillifer sp., recorded almost exclusively in Africa, where such infections occur as a consequence of hunting and consuming snakes, their final hosts. Seven further cases were caused by Linguatula serrata, a cosmopolitan pentastomid whose final hosts are usually canids. Intraocular infections caused permanent visual damage in 69% and a total loss of vision in 31% of reported cases. In contrast, ocular adnexal cases had a benign clinical course. Further research is required to estimate the burden, therapeutic options and pathogenesis of this neglected disease.

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Section: Resultsmentioning

confidence: 99%

Ocular Pentastomiasis in the Democratic Republic of the Congo

et al. 2014

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“…15 This case had been referred to them for identification and was published twice in 1962. 16,17 In the same year, Deweese and others 18 and Rentorff and others 19 reported an L. serrata nymph in the anterior chamber of the eye of an eight-year-old girl from Mississippi. The third case was reported in Israel by Lang and others 20 and involved a 12-year-old girl presenting with unilateral glaucoma secondary to the iritis caused by an L. serrata larva.…”

Section: Discussionmentioning

confidence: 99%

“…The occurrence of ocular linguatuliasis is extremely rare and has been reported only in the United States and Israel. [15][16][17][18][19][20] The objective of the present paper was to report the first case of ocular linguatuliasis in Ecuador and to contribute to the morphologic study of L. serrata by morphometric analysis.…”

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confidence: 99%

Ocular linguatuliasis in Ecuador: case report and morphometric study of the larva of Linguatula serrata.

Lazo¹,

Hidalgo²,

Lazo³

et al. 1999

The American Journal of Tropical Medicine and Hygiene

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Abstract. Linguatula serrata is a pentastomid, a cosmopolitan parasite belonging to the Phylum Pentastomida. Humans may act as an intermediate or accidental definitive host of this parasite, manifesting the nasopharyngeal or visceral form, with the latter having been described more frequently. The occurrence of ocular linguatuliasis is extremely rare, but it has been reported in the United States and Israel. The objective of the present paper was to report the first case of ocular linguatuliasis in Ecuador and to extend the morphologic study of L. serrata by morphometric analysis. The patient studied was a 34-year old woman from Guayaquil, Ecuador who complained of ocular pain with conjunctivitis and visual difficulties of two-months duration. Biomicroscopic examination revealed a mobile body in the anterior chamber of the eye. The mobile body was surgically removed. The specimen was fixed in alcohol, cleared using the technique of Loos, stained with acetic carmine, and mounted on balsam between a slide and a coverslip. It was observed with stereoscopic and common light microscopes in combination with an automatic system for image analysis and processing. The morphologic and morphometric characteristics corresponded to the third-instar larval form of L. serrata. To our knowledge, ocular linguatuliasis has not been previously described in South America, with this being the first report for Ecuador and South America. The present study shows that computer morphometry can adequately contribute both to the morphologic study and to the systematic classification of Pentastomids, and L. serrata in particular.

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“…serrata has been detected in various human organs in the studies made around the world. It has been reported that this parasite was found in the nasopharynx of a 20-year-old man in Egypt (10), in the throat of a 28-year-old woman in Tehran, Iran (6), in the anterior chamber of the eye (nymph of the parasite) of an 8-yearold girl in central Mississippi, USA (12), in the eye (nymph of the parasite) of a 34-year-old woman in Guayaquil, Ecuador (5), in a calcified nodule on the liver (nymph of parasite) of a 62-year-old man in North Carolina, USA (7), in the liver (nymph of the parasite) of a 15-year-old man in Bashkortostan, Russia (9), in a lung nodule (larvae of the parasite) of a 42-year-old man with AIDS in Apulia, Italy (11), and in parenchymal tubercles of the small intestine wall (larvae of the parasite) of a 3-year-old girl in Zhejiang, China (8). L. serrata infestation in Turkey has rarely been determined.…”

Section: Discussionmentioning

confidence: 99%

“…serrata has a cosmopolitan distribution in humans. The infections have been reported in Asia, America, Europe, Russia, Africa and some the Middle East and Arab countries (2,(4)(5)(6)(7)(8)(9)(10)(11)(12). The infection is acquired by ingesting raw vegetables or water contaminated with eggs of the parasite or by consuming uncooked infected liver or visceral lymph nodes of herbivorous mammals (1,2,5).…”

Section: Introductionmentioning

confidence: 99%

A Nasopharyngeal Human Infestation Caused by Linguatula serrata Nymphs in Van Province: A Case Report

Yılmaz¹,

Cengiz²,

Çiçek³

et al. 2011

TurkiyeParazitolDerg

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The reason for the presentation of this case is that Linguatula serrata, a parasite rarely encountered in humans, was found in a patient in Van province. The patient, who was 26 years old, lived in Erciş a town in Van province, East Turkey. She was admitted to the Outpatient Clinic of Infectious Diseases of Erciş Government Hospital with a complaint of coughing a few worms about 4 cm long from the oral cavity, and also sore throat, partial voice loss and vomiting. The polyclinic doctor suspected that the worm was a parasite but he could not make a diagnosis, and the patient was referred to Health Research and Training Hospital, Yüzüncü Yıl University. The parasite was examined in the Parasitology Laboratory and it was observed that this parasite was the nymph of L. serrata whose mouth was surrounded with four hooks and had approximately 90 body segments with small hooks. No medical treatment was given to the patient except that gargling with saline solution was recommended. As a result, we think that physicians should consider L. serrata infestation in patients applying to health foundations with complaints such as pharyngitis accompanied by pharyngeal pain, coughing, sneezing and vomiting. (Turkiye Parazitol Derg 2011; 35: 47-9) (Turkiye Parazitol Derg 2011; 35: 47-9) Anahtar Sözcükler: Linguatula serrata, insan, Van, TürkiyeGeliş Tarihi: 12.02

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The Occurrence of Linguatula Serrata, a Pentastomid, within the Human Eye

Cited by 20 publications

References 0 publications

Ocular Pentastomiasis in the Democratic Republic of the Congo

Ocular Pentastomiasis in the Democratic Republic of the Congo

Ocular linguatuliasis in Ecuador: case report and morphometric study of the larva of Linguatula serrata.

A Nasopharyngeal Human Infestation Caused by Linguatula serrata Nymphs in Van Province: A Case Report

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