New Insights on Canine Visceral Leishmaniasis

A special issue of Pathogens (ISSN 2076-0817). This special issue belongs to the section "Parasitic Pathogens".

Deadline for manuscript submissions: closed (1 December 2023) | Viewed by 4041

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Laboratório de Biologia das Interações Celulares, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil
Interests: leishmaniasis; vaccine; immunology; diagnosis
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Graduate Program in Cell Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
Interests: bioinformatics, cloning and expression of heterologous proteins; optimization of recombinant protein production; immunoenzymatic assays; maintenance of experimental animals, including mice, hamsters and dogs; development of products and processes for vaccines against diseases of medical and veterinary interest

Special Issue Information

Dear Colleagues,

Leishmaniasis is a group of infectious and parasitic diseases caused by protozoa of the genus Leishmania. Leishmaniasis manifests a wide clinical spectrum, and among them, visceral leishmaniasis (VL) is the most severe form. VL caused by Leishmania infantum (sin. Leishmania chagasi) is a zoonosis whose main urban reservoir is the dog (Canis familiaris). Importantly, cases of canine visceral leishmaniasis (CVL) precede HVL cases, emphasizing the important role of dogs in the urban parasite transmission cycle.

Diagnostic method improvements are required in addition to immunoprophylactic approaches that is the main rational strategy to control the human and canine VL. Moreover, additional challenges are the new treatments and predictive disease biomarker studies regarding the CVL resistance and susceptibility outcome.

We invite investigators to contribute original research articles as well as review articles that will stimulate the continuing efforts to advance in the field of diagnosis, immunopathologic, treatment, and vaccine approaches against CVL.

Potential topics include but are not limited to:

  • Development and testing of novel and effective anti-VL vaccines;
  • Identification of antigenic targets for both diagnosis and vaccine approaches;
  • Analysis of new adjuvants and antigenic formulations able to enhance the immunogenicity and efficacy;
  • Identifying biomarkers/correlates of protective immunity against VL;
  • New methodologies useful to perform the selection and/or testing of vaccine candidates using in vitro, preclinical, and clinical trial platforms;
  • High-performance methodologies to screening field samples, including new methodologies able to more accurately induce the diagnosis of VL;
  • Development and testing of new immunobiologicals to act as immunotherapy;
  • Studies focusing on the interaction of parasite and sandfly vectors of Leishmania

Before submission, authors should carefully read over the journal’s Author Guidelines, which are located at: https://www.mdpi.com/journal/pathogens/instructions.

Dr. Rodolfo Cordeiro Giunchetti
Dr. Reysla Maria da Silveira Mariano
Guest Editors

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Published Papers (2 papers)

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Research

13 pages, 3296 KiB  
Article
The Program for the Control of Visceral Leishmaniasis in Brazil: The Effect of the Systematic Euthanasia of Seropositive Dogs as a Single Control Action in Porteirinha, a Brazilian City with an Intense Transmission of Visceral Leishmaniasis
by João Carlos França-Silva, Rodolfo Cordeiro Giunchetti, Reysla Maria da Silveira Mariano, George Luiz Lins Machado-Coelho, Luciana de Almeida Silva Teixeira, Ricardo Andrade Barata, Érika Monteiro Michalsky, Marília Fonseca Rocha, Consuelo Latorre Fortes-Dias and Edelberto Santos Dias
Pathogens 2023, 12(8), 1060; https://doi.org/10.3390/pathogens12081060 - 18 Aug 2023
Cited by 1 | Viewed by 1039
Abstract
Background: Porteirinha is endemic for visceral leishmaniasis (VL), with intense disease transmission of the disease. We evaluated the impact of canine euthanasia as a single control measure on the incidence of VL in humans and canines. Methods: A prospective observational cohort study was [...] Read more.
Background: Porteirinha is endemic for visceral leishmaniasis (VL), with intense disease transmission of the disease. We evaluated the impact of canine euthanasia as a single control measure on the incidence of VL in humans and canines. Methods: A prospective observational cohort study was carried out over four years (1998–2002) in 8 of the 12 neighborhoods of the city. The dynamics of canine visceral leishmaniasis (CVL) transmission were evaluated for 2 years, before beginning the screening–culling intervention. The comparative morbidity index (CMI) was used to stratify areas with the greatest risk of CVL, and the spatial distribution of human and canine VL cases was compared using univariate and bivariate K-functions. Results: Human cases conglomerated in three neighborhoods. Spatial clusters were detected for CVL in 1998, 2000, and 2001, but not in 1999, when greater spatial dispersion occurred. The screening and culling intervention reduced the number of human VL cases and decreased the incidence of CVL, mainly in neighborhoods with a high CMI. Conclusions: The systematic euthanasia of seropositive dogs was shown to be an effective control action of the Program for Control of Visceral Leishmaniasis (PCLV) in Brazil. The fundamental role of domestic dogs in the epidemiological chain of VL was reaffirmed. Full article
(This article belongs to the Special Issue New Insights on Canine Visceral Leishmaniasis)
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12 pages, 1878 KiB  
Article
Bronchoscopy and Lung Fine-Needle Aspiration for Antemortem Evaluation of Pulmonary Involvement in Dogs with Naturally Occurring Canine Leishmaniosis
by Ioannis Kavarnos, Dimitra Pardali, Georgia D. Brellou, Elias Papadopoulos, Maria Kritsepi-Konstantinou and Katerina K. Adamama-Moraitou
Pathogens 2022, 11(3), 365; https://doi.org/10.3390/pathogens11030365 - 17 Mar 2022
Cited by 2 | Viewed by 2484
Abstract
Clinical manifestations from the lower respiratory tract are rare in canine leishmaniosis (CanL), making bronchoscopy and lung fine-needle aspiration (FNA) seldomly justified. The aim of this prospective study was to investigate the involvement of Leishmania infantum in the lungs of dogs with naturally [...] Read more.
Clinical manifestations from the lower respiratory tract are rare in canine leishmaniosis (CanL), making bronchoscopy and lung fine-needle aspiration (FNA) seldomly justified. The aim of this prospective study was to investigate the involvement of Leishmania infantum in the lungs of dogs with naturally occurring CanL by bronchoscopy and examination of bronchoalveolar lavage fluid (BALF), bronchial mucosa biopsies, and FNA, using immunodiagnostics. Dogs with relevant concurrent diseases and azotemia were excluded. Cough was detected in 5/31 (16.1%) dogs. Lesions (hyperemia, edema, mucosal granularity, secretions) were identified upon bronchoscopy in 19/31 (61.3%) dogs. The cytology of BALF revealed histiocytic inflammation in 14/31 (45.2%) dogs; the parasite was identified in one dog (3.2%). The immunofluorescence antibody test in BALF was positive in 15/31 (48.4%) dogs. Histopathology of bronchial mucosa and/or adjacent alveoli revealed lesions (mononuclear cell infiltration, fibrosis, edema, thickening of the inter-alveolar septa) in 24/31 (77.4%) dogs, with no Leishmania amastigotes. Positive antigen staining was observed within the cytoplasm of mononuclear cells in immunocytochemistry and immunohistochemistry. Μononuclear cells showed antigenic positivity in bronchial mucosa (27/31; 87.1%), BALF (30/31; 96.8%), and lung FNA (27/31; 87.1%). In conclusion, lungs seem to be affected from CanL more commonly than previously believed, and bronchoscopy allows obtaining valuable samples for antemortem diagnosis. Full article
(This article belongs to the Special Issue New Insights on Canine Visceral Leishmaniasis)
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