Preliminary report of histopathology associated with infection with tongue worms in Australian dogs and cattle

Shamsi, Shokoofeh; Loukopoulos, Panayiotis; McSpadden, Kate; Baker, Sara; Dj, Jenkins

doi:10.1016/j.parint.2018.05.011

Cited by 8 publications

(6 citation statements)

References 7 publications

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“…Histological examination of mesenteric lymph nodes of cattle infected with L. serrata found that calcification of cysts was common ( Shamsi et al, 2018 ). However, the cause of the lymphadenitis observed in cattle lymph nodes was often not differentiated ( Shamsi et al, 2018 ). Nymphs of L .…”

Section: Discussionmentioning

confidence: 99%

“…Firstly, the number of feral goats sent to abattoirs was small until recently ( Pople and Froese, 2012 ), thus the meat inspectors at abattoirs were not “acquainted with the parasite” ( Pullar, 1936 , p. 63) as they were for cattle. Histological examination of mesenteric lymph nodes of cattle infected with L. serrata found that calcification of cysts was common ( Shamsi et al, 2018 ). However, the cause of the lymphadenitis observed in cattle lymph nodes was often not differentiated ( Shamsi et al, 2018 ).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Are feral goats intermediate hosts for Linguatula (Pentastomida) in Australia?

Barton

Shackelford

Shamsi

et al. 2022

International Journal for Parasitology: Parasites and Wildlife

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Are feral goats intermediate hosts for Linguatula (Pentastomida) in Australia?

Barton

Shackelford

Shamsi

et al. 2022

International Journal for Parasitology: Parasites and Wildlife

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“…The classic deviations for helminthiases were an increase in the number of leukocytes in young dogs and a sharp increase in the content of eosinophils in animals of both ages. These changes in the morphological parameters of the blood indicate an inflammatory process in patients and the immunological response to the sensitizing factor -metabolites and somatic substances of parasites (Shamsi et al, 2018;Miglio et al, 2020). However, the appearance of basophils in young and severe basophilia in adult dogs was specific, which may be justified by chronic inflammatory condition of the gastrointestinal tract (due to mechanical intervention of adult nematodes in the intestinal wall) and the same allergic reactions to helminths (Reck et al, 2011;Abbott & Allen, 2020).…”

Section: Discussionmentioning

confidence: 99%

Co-infection of Trichuris vulpis and Toxocara canis in different aged dogs: Influence on the haematological indices

Saichenko

Antipov

Bakhur³

et al. 2021

Biosys. divers.

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Trichuris vulpis and Toxocara canis are worldwide parasitic nematodes affecting dogs and mammals of the Canine family. Due to the special structure of the shells, the eggs of these geohelminths can maintain their viability in soil, sand, water and the environment for a long time. The study involved young (6–12 months old) and adult (1.5–8.0 years old) dogs affected by co-infection of T. vulpis + T. canis; the control group consisted of dewormed healthy animals of the same age. Parasitological examination of dogs' faeces was performed using a "Counting Chamber for Ovoscopic Researches"; morphological parameters, indicators of nutrient metabolism, mineral metabolism and activity of enzymatic systems were determined in blood and serum. According to the results of parasitological research on the dogs, it was found that young animals are more prone to toxocarosis, and adults – trichurosis. The co-infection of nematodes T. vulpis + T. canis in dogs develops several changes in haematological parameters: a significant decrease in erythrocytes, haemoglobin, MCV, MCH, and haematocrit, leukocytosis with basophils and eosinophilia in young infected animals; and eosinophilia and basophilia (15.9 times) in adults, compared with healthy dogs of the same age. Among the changes in serum biochemical parameters, young infected dogs showed a decrease in the concentration of total protein and albumin content, an increase in the content of "acute phase" proteins (α-1, α-2 and β-globulins), an increase in cholesterol and total bilirubin; in adult infected dogs, a decrease in albumin content, an increase in the content of α-1, α-2, and β-globulins, an increase in the concentration of cholesterol and total bilirubin, a decrease in the concentration of urea in comparison with healthy animals were determined. Also, among the indicators of mineral metabolism, a decrease in the concentration of calcium and magnesium in the serum was found in young infected dogs. Among the changes in the enzyme metabolism in the serum of infected dogs, there was an increase in the activity of all studied enzymes in animals of both research groups: ALT, AST, α-amylase, GGT and ALP. Thus, co-infection with nematodes T. vulpis + T. canis has a complex pathogenic effect on the body of dogs of all ages, which manifested itself in multiple changes in haematological parameters. In the future, the authors’ team plan to develop comprehensive measures to combat nematode infections in different living conditions of dogs, taking into account the results of the current research.

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“…Linguatula spp. are known to be pathogenic for both definitive and intermediate hosts (Godara et al 2013;Shamsi et al 2018). They are also commonly reported from humans (Tabaripour et al 2021).…”

Section: Introductionmentioning

confidence: 99%

28S rRNA sequences for Linguatula spp.

et al. 2022

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Identification of specimens belonging to the genus Linguatula (Pentastomida) is relatively easy due to their unique morphology. However, differentiation between species of Linguatula can be challenging for several reasons, including considerable differences between different developmental stages of the parasite within and between species. Currently, 18S rRNA and Cox1 sequences are the only available comparable sequences in GenBank, but recent research has discussed the utility of 28S rRNA for pentastomid phylogenetics. This study presents 28S rRNA gene sequences for two members of the genus Linguatula. Sequences of 28S rRNA were successfully obtained from well-identified samples of L.serrata (collected in Australia) and L.nuttalli (collected in South Africa), with voucher specimens. Phylogenetic analysis of the 28S rRNA region showed 6% difference between L.serrata and L.nuttalli, with low levels of intraspecific variation. In comparison, 18S rRNA and Cox1 sequences from the same specimens showed 0.23% and 13% interspecific differences, respectively. The results of this study show that 28S rRNA has greater genetic diversity to allow for improved differentiation between species of Linguatula than 18S rRNA but is on par with Cox1. Records that do not provide adequate morphological or molecular data to justify independent specific diagnoses must be regarded cautiously, and the need for continued research on species of Linguatula, using a combined morphological and molecular analysis, across a number of different hosts, development stages, geographical regions and molecular markers is highlighted.

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Preliminary report of histopathology associated with infection with tongue worms in Australian dogs and cattle

Cited by 8 publications

References 7 publications

Are feral goats intermediate hosts for Linguatula (Pentastomida) in Australia?

Are feral goats intermediate hosts for Linguatula (Pentastomida) in Australia?

Co-infection of Trichuris vulpis and Toxocara canis in different aged dogs: Influence on the haematological indices

28S rRNA sequences for Linguatula spp.

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