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自然感染婴儿利什曼原虫的犬在内脏利什曼病期间表现出趋化因子和趋化因子受体表达的全面受损。

Naturally Leishmania infantum-infected dogs display an overall impairment of chemokine and chemokine receptor expression during visceral leishmaniasis.

作者信息

Nascimento Manuela S L, Albuquerque Talyta D R, Do-Valle-Matta Maria A, Caldas Ivo S, Diniz Lívia F, Talvani André, Bahia Maria T, Andrade Cléber M, Galvão Lúcia M C, Câmara Antônia C J, Guedes Paulo M M

机构信息

Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.

出版信息

Vet Immunol Immunopathol. 2013 Jun 15;153(3-4):202-8. doi: 10.1016/j.vetimm.2013.02.015. Epub 2013 Mar 5.


DOI:10.1016/j.vetimm.2013.02.015
PMID:23545087
Abstract

Dogs are the primary reservoir for Leishmania parasites. The immune response induced by Leishmania infantum infection in these animals has not been completely elucidated, and few studies have investigated the relationship between the expression levels of chemokines and chemokine receptors and the clinical status of dogs with canine visceral leishmaniasis (CVL). The aim of this study was to correlate the clinical status of naturally L. infantum-infected dogs (from rural areas of Mossoró city, State of Rio Grande do Norte, Brazil) with the expression levels of chemokines (ccl1, ccl2, ccl3, ccl4, ccl5, ccl17, ccl20, ccl24, ccl26, cxcl9, cxcl10) and chemokine receptors (cxcr3, ccr3, ccr4, ccr5, ccr6, ccr8) in the liver and spleen determined using real-time PCR. Twenty-one dogs were clinically evaluated and classified as asymptomatic (n=11) or symptomatic (n=10). Splenomegaly, weight loss and onychogryphosis were the most pronounced symptoms. In the liver, the mRNA expression levels of ccl1, ccl17, ccl26, ccr3, ccr4, ccr5, ccr6, and ccr8 were lower in symptomatic animals than in asymptomatic animals. Compared with uninfected animals, symptomatic dogs had lower expression levels of almost all molecules analyzed. Moreover, high clinical scores were negatively correlated with ccr5 and ccr6 expression and positively correlated with cxcl10 expression. We conclude that the impairment of the expression of chemokines and chemokine receptors results in deficient leukocyte migration and hampers the immune response, leading to the development of disease.

摘要

狗是利什曼原虫寄生虫的主要宿主。婴儿利什曼原虫感染在这些动物中诱导的免疫反应尚未完全阐明,很少有研究调查趋化因子和趋化因子受体的表达水平与犬内脏利什曼病(CVL)犬的临床状况之间的关系。本研究的目的是将自然感染婴儿利什曼原虫的犬(来自巴西北里奥格兰德州莫索罗市农村地区)的临床状况与通过实时PCR测定的肝脏和脾脏中趋化因子(ccl1、ccl2、ccl3、ccl4、ccl5、ccl17、ccl20、ccl24、ccl26、cxcl9、cxcl10)和趋化因子受体(cxcr3、ccr3、ccr4、ccr5、ccr6、ccr8)的表达水平相关联。对21只犬进行临床评估并分为无症状(n = 11)或有症状(n = 10)。脾肿大、体重减轻和爪甲肥厚是最明显的症状。在肝脏中,有症状动物的ccl1、ccl17、ccl26、ccr3、ccr4、ccr5、ccr6和ccr8的mRNA表达水平低于无症状动物。与未感染动物相比,有症状的犬几乎所有分析分子的表达水平都较低。此外,高临床评分与ccr5和ccr6表达呈负相关,与cxcl10表达呈正相关。我们得出结论,趋化因子和趋化因子受体表达的受损导致白细胞迁移不足并阻碍免疫反应,从而导致疾病的发展。

相似文献

[1]
Naturally Leishmania infantum-infected dogs display an overall impairment of chemokine and chemokine receptor expression during visceral leishmaniasis.

Vet Immunol Immunopathol. 2013-6-15

[2]
Long-lasting protection against canine visceral leishmaniasis using the LiESAp-MDP vaccine in endemic areas of France: double-blind randomised efficacy field trial.

Vaccine. 2007-5-22

[3]
Interleukin-12 augments a Th1-type immune response manifested as lymphocyte proliferation and interferon gamma production in Leishmania infantum-infected dogs.

Int J Parasitol. 2005-1

[4]
Higher expression of CCL2, CCL4, CCL5, CCL21, and CXCL8 chemokines in the skin associated with parasite density in canine visceral leishmaniasis.

PLoS Negl Trop Dis. 2012-4-10

[5]
Splenic immune responses during canine visceral leishmaniasis.

Vet Res. 2007

[6]
Divergence between hepatic insulin-like growth factor (IGF)-I mRNA expression and IGF-I serum levels in Leishmania (Leishmania) infantum chagasi-infected dogs.

Vet Immunol Immunopathol. 2013-1-15

[7]
Cytokine gene expression in the tissues of dogs infected by Leishmania infantum.

J Comp Pathol. 2011-11

[8]
[Interpretation of laboratory data during cryptic leishmaniasis in dog].

Parassitologia. 2004-6

[9]
Cytokine expression in dogs with natural Leishmania infantum infection.

Parasitology. 2009-7

[10]
Systemic and compartmentalized immune response in canine visceral leishmaniasis.

Vet Immunol Immunopathol. 2009-3-15

引用本文的文献

[1]
Splenic macrophage functional profile and its role in the immunopathogenesis of canine visceral leishmaniasis.

Front Immunol. 2025-6-20

[2]
Protumor effect of CXCL10/CXCR3 axis in canine mammary gland tumor.

J Vet Sci. 2025-3

[3]
Serum and urinary monocyte chemoattractant protein-1 as markers of inflammation and renal damage in dogs with naturally occurring leishmaniosis.

Parasit Vectors. 2024-8-29

[4]
Epidemiologic, Clinical and Immunological Consequences of Co-Infections during Canine Leishmaniosis.

Animals (Basel). 2021-11-10

[5]
Pro-Cellular Exhaustion Markers are Associated with Splenic Microarchitecture Disorganization and Parasite Load in Dogs with Visceral Leishmaniasis.

Sci Rep. 2019-9-10

[6]
Biomarkers Associated With Exposure, Infection, and Disease in Dogs.

Front Cell Infect Microbiol. 2018-9-6

[7]
Morphophysiological changes in the splenic extracellular matrix of Leishmania infantum-naturally infected dogs is associated with alterations in lymphoid niches and the CD4+ T cell frequency in spleens.

PLoS Negl Trop Dis. 2018-4-20

[8]
The Challenge of Stability in High-Throughput Gene Expression Analysis: Comprehensive Selection and Evaluation of Reference Genes for BALB/c Mice Spleen Samples in the Leishmania infantum Infection Model.

PLoS One. 2016-9-26

[9]
Insights on adaptive and innate immunity in canine leishmaniosis.

Parasitology. 2017-1

[10]
Parasite load induces progressive spleen architecture breakage and impairs cytokine mRNA expression in Leishmania infantum-naturally infected dogs.

PLoS One. 2015-4-13

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