Angiostrongylus vasorum from UK foxes
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ABSTRACT:
PROVIDER: PRJEB25533 | ENA |
REPOSITORIES: ENA
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Project description:Dogs infected with the cardiopulmonary nematode Angiostrongylus vasorum may suffer respiratory distress and/or bleeding disorders. Descriptions of clinical signs in foxes are rare, despite high prevalence. To evaluate the impact of infection on coagulation and immune response, serum proteins from eight experimentally infected foxes before and after inoculation (day 0, 35, 84, 154) were subjected to quantitative proteomic analysis and compared to available data from dogs. The number of differentially expressed proteins compared to uninfected baseline increased with chronicity of the infection. Bone marrow proteoglycan, chitinase 3-like protein 1 and pulmonary surfactant-associated protein B were among strongly upregulated proteins. Several proteins involved in coagulation were downregulated. Enriched pathways obtained from both up- and downregulated proteins included among others ‘platelet degranulation‘ and ‘haemostasis’, and indicated both activation and suppression of coagulation. Qualitative comparison to dog data suggests some parallel serum proteomic alterations. The comparison, however, highlights that foxes have a more balanced immunopathological response to A. vasorum infection compared to dogs, facilitating parasite survival in foxes. Our findings imply that foxes may cope better with an A. vasorum infection and that A. vasorum is likely more adapted to foxes as compared to dogs, explaining the relevant role of foxes as wildlife reservoir.
2021-11-25 | PXD028312 | Pride
Project description:Angiostrongylus vasorum strain:ZH-2019-22 Genome sequencing and assembly
| PRJNA663250 | ENA
Project description:Systemic infection by Angiostrongylus vasorum in a fennec (Vulpes zerda) in an Italian zoological garden
| PRJEB55043 | ENA
Project description:Angiostrongylus vasorum is a cardiopulmonary nematode of canids and is, among others associated with bleeding disorders in dogs. The pathogenesis of coagulopathies remains unclear. We performed a deep proteomic characterization of sex specific A. vasorum excretory/secretory proteins (ESP) and of cuticular surface proteins, and evaluated the effect of ESP on host coagulation and fibrinolysis in vitro. Proteins were quantified by liquid chromatography coupled to mass spectrometry and functionally characterized through gene ontology and pathway enrichment analysis. In total, we identified 1069 ESP (944 from female and 959 from male specimens) and 1195 surface proteins (705 and 1135, respectively). Among these, we identified putative modulators of host coagulation, e.g., von Willebrand factor type D domain protein orthologues as well as several proteases, including serine type proteases, protease inhibitors and proteasome subunits. The effect of ESP on dog coagulation and fibrinolysis was evaluated on canine endothelial cells and by rotational thromboelastometry (ROTEM). After stimulation with ESP, tissue factor and serpin E1 transcript expression increased. ROTEM revealed minimal interaction of ESP with dog blood and did not influence the onset of fibrinolysis. We thus conclude that Angiostrongylus vasorum ESP and surface proteins do not act alone in the induction of bleeding in dogs. The interaction with the host’s vascular haemostasis is limited. It is likely that coagulopathies in A. vasorum infected dogs are the result of a multifactorial response of the host to this parasitic infection.
2021-11-03 | PXD027520 | Pride
Project description:Impact of Angiostrongylus vasorum on host blood transcriptome
| PRJEB53546 | ENA
Project description:Blood contains hundreds of proteins, reflecting ongoing cellular processes and immune reactions. Angiostrongylus vasorum infection is associated with a perturbed blood protein profile in dogs. However, the literature currently available lacks the necessary depth of analysis in order to resolve the observed pathologies in A. vasorum infections, including bleeding disorders. Using sera from 8 experimentally-infected dogs (i) before infection with A. vasorum, (ii) 34 days post-infection (p.i.; immature infection), and (iii) 75 days p.i. (mature patent infection), serum proteins were measured using liquid chromatography, tandem mass spectrometry (LC-MS/MS). For 2 dogs, serum was analyzed at days 104 and 230 p.i. additionally. A data-independent acquisition workflow was employed in order to generate quantitative data. Following computational analysis, we identified 139 up- and down-regulated proteins following infection (log2 ratio cutoff ≥ 1.0; q-value ≤ 0.05). Differences in serum profiles were most pronounced at day 75 p.i. compared to before infection. Among up-regulated proteins, chitinase 3, several saposin-like proteins, and heat shock proteins were found greatly increased (log2 fold-changes ≥ 5). Levels of pulmonary surfactant protein B were elevated on day 34 p.i. already, in the prepatent phase. Pathway enrichment revealed that complement (especially the lectin pathway) and coagulation cascades as significantly affected upon analysis of down-regulated proteins. Among them were mannan-binding lectin serine peptidases, ficolin, and coagulation factors. These results reflect the ongoing immune response and stress imposed to the lungs by the parasite. In addition, they bring new elements towards understanding the coagulopathies observed in some A. vasorum-infected dogs.
2021-01-12 | PXD016881 | Pride
Project description:Infection by Angiostrongylus cantonensis accounted for the meningitis characterized by accumulation of eosinophils in non-permissive host like mouse and human. However, the underlying molecular basis is still obscure. To uncover the specific molecular mechanism responsible for the meningitis caused by Angiostrongylus cantonensis, we carried out gene expression array for mouse brain with infection by Angiostrongylus cantonensis.
2020-10-14 | GSE159486 | GEO
Project description:Surrey, a county in southern England, is a hot spot for angiostrongylosis in domestic dogs but there have been no investigations into the intermediate hosts of Angiostrongylus vasorum in this area. This study aimed to determine the prevalence of A. vasorum in gastropods in Guildford, the most populous town in Surrey, and to ascertain which gastropod species can act as intermediate hosts for A. vasorum. Gastropods (n?=?97) were sampled in six locations, representing urban, suburban and rural environments, and identified to species based on morphological features. A PCR assay was used to detect A. vasorum DNA in gastropod tissue and the species of infected specimens was confirmed by sequencing of mitochondrial genes. 4.1% (4/97) of sampled gastropods and 9.1% (4/44) of sampled slugs were A. vasorum positive. Infected gastropod species were Arion rufus (n?=?3) and Deroceras invadens (n?=?1), the first description of the latter species as a potential intermediate host for A. vasorum. Two infected slugs were sampled in urban environments and two in suburban environments. The results demonstrate that there is a risk of transmission of A. vasorum to domestic dogs from the gastropod population in urban and suburban areas of Guildford.
| S-EPMC6514071 | biostudies-literature