Evidence map›Paper›PMID 38533618›Full record

ArticleThe veterinary quarterly2024

Tertiary lymphoid organs in wild boar exposed to a low-virulent isolate of African swine fever virus.

Néstor Porras, José M Sánchez-Vizcaíno, Antonio Rodríguez-Bertos, Aleksandra Kosowska, José Á Barasona

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Article in The veterinary quarterly, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Néstor PorrasVISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain.
José M Sánchez-VizcaínoVISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain.
Antonio Rodríguez-BertosVISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain.
Aleksandra KosowskaVISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain.
José Á BarasonaVISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Despite the great interest in the development of a vaccine against African swine fever (ASF) in wild boar, the immunological mechanisms that induce animal protection are still unknown. For this purpose, tertiary lymphoid organs (TLOs) of wild boar were characterised and compared with mucosa-associated lymphoid tissues (MALTs) by histopathology, histomorphometry and immunohistochemistry (CD3, CD79, PAX5, LYVE1, fibronectin). In addition, real-time polymerase chain reaction (qPCR) and immunohistochemistry (p72) were used to evaluate the presence of ASF virus (ASFV) in blood and tissues samples, respectively. TLOs were observed in animals infected with a low-virulent ASFV isolate (LVI), animals co-infected with low and high-virulent ASFV isolates (LVI-HVI) and animals infected only with the high virulence isolate (HVI). TLOs in LVI and LVI-HVI groups were located adjacent to the mucosa and presented a similar structure to MALT. Immunoexpresion of p72 observed in the inflammatory cells adjacent to TLOs/MALTs confirmed its development and reactivity generated by ASF attenuated isolates. Immunohistochemical evaluation, based on cellular composition (T and B lymphocytes), and histomorphometrical study revealed a more pronounced maturation of TLOs/MALTs in the LVI-HVI group. It is currently unclear whether these formations play a protective role by contributing to local immunity in chronic inflammatory diseases. However, the structural similarities between TLOs and MALTs and the location of TLOs close to the mucosa suggest that they may perform a similar function, facilitating a local protective response. Nevertheless, further investigations are warranted to assess the cellular and humoral dynamics of these lymphoid organs induced by attenuated isolates.

Indexed as

African Swine FeverAfrican Swine Fever VirusSwine DiseasesAnimalsSus scrofaSwineVirulenceAfrican swine fever virus (ASFV)high-virulent isolatehistopathologyimmunohistochemistrylocal immunitylow-virulent isolatetertiary lymphoid organs (TLOs)wild boar

Identifiers

PMID38533618
PMCPMC10976996

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.