Linguatula serrata in the anterior chamber of the eye

Bhende, Muna; Abhishek, Abhishek; Biswas, Jyotirmoy; Raman, M.; Bhende, Pramod

doi:10.4103/0301-4738.149145

Cited by 13 publications

(5 citation statements)

References 6 publications

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“…Following ingestion the nymphs move from the digestive tract, up the oesophagus to the nasal cavity where they develop into mature adults ( Riley, 1986 , Paré, 2008 ). Zoonotic cases of infection with L. serrata have been reported from several countries ( Self and Kuntz, 1967 , Riley, 1986 , Bowman, 1995 , Lazo et al., 1999 , Paré, 2008 , Koehsler et al., 2011 , Bhende et al., 2014 , Oluwasina et al., 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Occurrence of tongue worm, Linguatula cf. serrata (Pentastomida: Linguatulidae) in wild canids and livestock in south-eastern Australia

Shamsi

McSpadden

Baker

et al. 2017

International Journal for Parasitology: Parasites and Wildlife

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Pentastomids are obligate zoonotic arthropod parasites utilising canids and vulpids as their definitive hosts and several herbivorous species as their intermediate hosts. Reported only 10 times in Australia over the last 150 years as incidental findings, adult Pentastomids referred to as Linguatula serrata have been encountered in nasal cavities of domestic and wild dogs, and foxes. Nymphs have been reported in cattle and rabbits. In the present study, a number of potential definitive hosts, including red foxes (Vulpes vulpes), wild dogs (Canis lupus dingo and C.l. dingo x C. familiaris) and feral cats (Felis catus), and intermediate hosts cattle (Bos taurus), sheep (Ovis aries), feral pigs (Sus scrofa), rabbits (Oryctolagus cuniculus), goats (Capra hircus) and a European hare (Lepus europaeus), from the highlands of south-eastern Australia were examined. Of the animals examined 67.6% of wild dogs (n = 37), 14.5% of red foxes (n = 55) and 4.3% of cattle (n = 164) were found to be infected with Pentastomids, herein identified as Linguatula cf. serrata. The common occurrence of the parasite in wild dogs and less frequently in foxes suggests these wild canids have potential to act as a reservoir for infection of livestock, wildlife, domestic dogs and possibly humans. The unexpected high frequency of the parasite in wild dogs and foxes in south-eastern Australia suggests the parasite is more common than previously realised. Of the potential intermediate hosts in the region, only 4.3% of cattle were found to be infected with pentastomid nymphs which suggest the search for the host(s) acting as the main intermediate host in the region should continue. Future studies should investigate transmission patterns, health impacts on hosts and whether the parasite has zoonotic significance in Australia.

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Section: Introductionmentioning

confidence: 99%

Occurrence of tongue worm, Linguatula cf. serrata (Pentastomida: Linguatulidae) in wild canids and livestock in south-eastern Australia

Shamsi

McSpadden

Baker

et al. 2017

International Journal for Parasitology: Parasites and Wildlife

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“…Ingestion of infective eggs causes visceral linguatulosis with the migration and encapsulation of larvae in internal organs, including cases of liver lesions ( Symmers and Valteris, 1950 ; Tappe and Büttner, 2009 ), pulmonary nodules mimicking lung carcinoma ( Pampiglione et al ., 2001 ), and mesenteric lymph node localization mimicking acute appendicitis ( Mateva et al ., 2013 ). There are also reports about rare cases of human ocular linguatulosis caused by immature stages of L. serrata ( Lazo et al ., 1999 ; Koehsler et al ., 2011 ; Bhende et al ., 2014 ). Owners and veterinary practitioners, who are likely to be in direct contact with canine nasal secretions and feces-containing eggs, are at risk of zoonotic infection with visceral linguatulosis.…”

Section: Discussionmentioning

confidence: 99%

Linguatula serrata (Pentastomida: Linguatulidae) infection in a paucisymptomatic greyhound imported from Romania to Italy: A case report and literature overview

Marchetti,

Macchioni,

Gori

et al. 2023

Open Vet J

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Background: Linguatula serrata is a pentastomid zoonotic parasite with worldwide distribution. Although some cases of L. serrata infection have been reported in dogs, the epidemiology of this parasite remains largely unknown in developed countries. In recent years, canine linguatulosis has been repeatedly linked to cases of imported infections. This study aims to focus attention on this uncommon parasite through the presentation of a case report and an overview of the literature. Case Description: A 1-year-old intact female Borzoi imported from Romania to Italy sneezed spontaneously a worm-like parasite specimen. Morphological and molecular diagnosis identified the parasite as a female of the zoonotic pentastomid L. serrata (so-called European tongue worm) that lives in the nasopharyngeal tract of canids. Eggs of Linguatula were detected in the faeces. Molecular identification (99-100% homology) was based on DNA extraction, PCR of a 700-bp fragment of the mitochondrial cytochrome c oxidase subunit I gene, and alignment with BLAST analysis. Due to the possibility of other adult or juvenile specimens of the parasite still occurring in the dog, a treatment attempt with a combination of febantel/pyrantel/praziquantel was made. No parasite eggs were detected in fecal samples after the drug was administered. Endoscopy confirmed the absence of adult parasites and slight pathological changes. A follow-up examination conducted three months after the treatment did not reveal any clinical and laboratory abnormalities. Conclusion: L. serrata appears to be currently prevalent in some European countries, but there are no recent extensive studies on the prevalence of canine linguatulosis, so the parasite frequently remains undetected and unreported in dogs as the diagnosis is often overlooked. Parasites not commonly found such as L. serrata can become increasingly prevalent and may be detected in imported dogs. Therefore, veterinarians must be aware of the possible presence of uncommon and exotic pathogens in these dogs, be able to recognize the relevant clinical signs, and diagnose the infection quickly. This will improve the prognosis in individual dogs, reduces the risk of possible public health implications, and reduces the risk of uncommon and exotic pathogens establishing new endemic foci.

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“…A central necrosis with leukocyte infiltrate and multiple foci of mineralization have been reported by researchers in type four granuloma [ 55 ]. In humans, nymphal stages have been identified both in the lung, under the appearance of nodules [ 24 ], and in the anterior chamber of the eyeball, along with a subluxation of the lens and secondary glaucoma [ 56 ].…”

Section: Discussionmentioning

confidence: 99%

Characterization of the Tongue Worm, Linguatula serrata (Pentastomida), Identified from Hares (Lepus europaeus) in Romania

Jitea,

Imre,

Florea

et al. 2023

IJMS

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Linguatula serrata (Frölich, 1789) is a widespread parasite known as the tongue worm belonging to the family Linguatulidae. The adult form of the parasite is usually located in the upper respiratory tract of domestic and wild carnivores while the larval forms are located in the visceral organs of intermediate hosts (various herbivorous mammals). Twenty-four European brown hares (Lepus europaeus) were examined in this study, of which two were positive with L. serrata nymphs. The collected nymphs were examined morphologically using electron-microscopic analysis and molecularly by amplification of 18S rRNA and COX1 genes. Lung tissue samples were also collected and histopathological examination was performed. Histopathological examination revealed the following lesions: generalized inflammatory oedema, granulomas with necrosis, calcification and fibrosis in the bronchial tree. The results of molecular sequencing for L. serrata specimens collected from the European brown hares are deposited in GenBank. This study presents the first report on Linguatula serrata nymphs collected from L. europaeus in Romania, using molecular and morphological characterization simultaneously.

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Linguatula serrata in the anterior chamber of the eye

Cited by 13 publications

References 6 publications

Occurrence of tongue worm, Linguatula cf. serrata (Pentastomida: Linguatulidae) in wild canids and livestock in south-eastern Australia

Occurrence of tongue worm, Linguatula cf. serrata (Pentastomida: Linguatulidae) in wild canids and livestock in south-eastern Australia

Linguatula serrata (Pentastomida: Linguatulidae) infection in a paucisymptomatic greyhound imported from Romania to Italy: A case report and literature overview

Characterization of the Tongue Worm, Linguatula serrata (Pentastomida), Identified from Hares (Lepus europaeus) in Romania

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