Complement and Coagulation Cascade Activation Regulates the Early Inflammatory Mechanism of Resistance of Suckling Lambs Against <i>Haemonchus contortus</i>

<i>Haemonchus contortus</i> is a highly pathogenic blood-sucking nematode from the abomasum of small ruminants. To develop effective control strategies, it is essential to understand the initial mechanisms involved in host resistance to this parasite. In this study, we used computational...

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Main Authors: José Gabriel G. Lins, Alessandro F. T. Amarante
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Pathogens
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Online Access:https://www.mdpi.com/2076-0817/14/5/447
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author José Gabriel G. Lins
Alessandro F. T. Amarante
author_facet José Gabriel G. Lins
Alessandro F. T. Amarante
author_sort José Gabriel G. Lins
collection DOAJ
description <i>Haemonchus contortus</i> is a highly pathogenic blood-sucking nematode from the abomasum of small ruminants. To develop effective control strategies, it is essential to understand the initial mechanisms involved in host resistance to this parasite. In this study, we used computational tools to analyze the complement and coagulation pathways generated from RNA sequencing of abomasal tissue from resistant (Santa Ines) and susceptible (Ile de France) young sheep artificially infected with <i>H. contortus</i>. Thirty-two differentially expressed genes annotated to the ovine genome were associated with the complement and coagulation cascades, of which 29 of them were overexpressed in Santa Ines. Our data identified potential markers for resistance trait selection in sheep, such as C3 (complement C3), F3 (tissue factor), F5 (coagulation factor V), CFB (complement factor B), and CFI (complement factor I). Santa Ines may have a more robust coagulation system, being activated by extrinsic pathways associated with tissue damage. The complement may act as a mediator of the innate immunity, and its activation in Santa Ines is associated with the classical, the lectin, and the alternative pathway. Finally, resistant Santa Ines lambs had a polygenic overexpressed architecture controlling both complement and coagulation cascades, which probably contributed to the early-onset protection against <i>H. contortus</i>.
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spelling doaj-art-1e2015c2a23143db8a1a1300c25db4a32025-08-20T02:33:58ZengMDPI AGPathogens2076-08172025-05-0114544710.3390/pathogens14050447Complement and Coagulation Cascade Activation Regulates the Early Inflammatory Mechanism of Resistance of Suckling Lambs Against <i>Haemonchus contortus</i>José Gabriel G. Lins0Alessandro F. T. Amarante1Department of Veterinary Clinics, School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu 18618-681, BrazilDepartment of Biostatistics and Biodiversity, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-689, Brazil<i>Haemonchus contortus</i> is a highly pathogenic blood-sucking nematode from the abomasum of small ruminants. To develop effective control strategies, it is essential to understand the initial mechanisms involved in host resistance to this parasite. In this study, we used computational tools to analyze the complement and coagulation pathways generated from RNA sequencing of abomasal tissue from resistant (Santa Ines) and susceptible (Ile de France) young sheep artificially infected with <i>H. contortus</i>. Thirty-two differentially expressed genes annotated to the ovine genome were associated with the complement and coagulation cascades, of which 29 of them were overexpressed in Santa Ines. Our data identified potential markers for resistance trait selection in sheep, such as C3 (complement C3), F3 (tissue factor), F5 (coagulation factor V), CFB (complement factor B), and CFI (complement factor I). Santa Ines may have a more robust coagulation system, being activated by extrinsic pathways associated with tissue damage. The complement may act as a mediator of the innate immunity, and its activation in Santa Ines is associated with the classical, the lectin, and the alternative pathway. Finally, resistant Santa Ines lambs had a polygenic overexpressed architecture controlling both complement and coagulation cascades, which probably contributed to the early-onset protection against <i>H. contortus</i>.https://www.mdpi.com/2076-0817/14/5/447innate immunityhomeostasisnematode infectionpro-inflammatory responsesheep resistance
spellingShingle José Gabriel G. Lins
Alessandro F. T. Amarante
Complement and Coagulation Cascade Activation Regulates the Early Inflammatory Mechanism of Resistance of Suckling Lambs Against <i>Haemonchus contortus</i>
Pathogens
innate immunity
homeostasis
nematode infection
pro-inflammatory response
sheep resistance
title Complement and Coagulation Cascade Activation Regulates the Early Inflammatory Mechanism of Resistance of Suckling Lambs Against <i>Haemonchus contortus</i>
title_full Complement and Coagulation Cascade Activation Regulates the Early Inflammatory Mechanism of Resistance of Suckling Lambs Against <i>Haemonchus contortus</i>
title_fullStr Complement and Coagulation Cascade Activation Regulates the Early Inflammatory Mechanism of Resistance of Suckling Lambs Against <i>Haemonchus contortus</i>
title_full_unstemmed Complement and Coagulation Cascade Activation Regulates the Early Inflammatory Mechanism of Resistance of Suckling Lambs Against <i>Haemonchus contortus</i>
title_short Complement and Coagulation Cascade Activation Regulates the Early Inflammatory Mechanism of Resistance of Suckling Lambs Against <i>Haemonchus contortus</i>
title_sort complement and coagulation cascade activation regulates the early inflammatory mechanism of resistance of suckling lambs against i haemonchus contortus i
topic innate immunity
homeostasis
nematode infection
pro-inflammatory response
sheep resistance
url https://www.mdpi.com/2076-0817/14/5/447
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