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Laidoudi Y, Sevestre J, Bedjaoui S, Watier-Grillot S, Davoust B. Serosurvey of canine leishmaniasis in five departments near an identified human clinical case in Marseille (France). One Health 2024; 19:100855. [PMID: 39091974 PMCID: PMC11292362 DOI: 10.1016/j.onehlt.2024.100855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 08/04/2024] Open
Abstract
Leishmania infantum is a protozoan parasite of the family Trypanosomatidae, transmitted by the bite of phlebotomine sand flies (Diptera: Psychodidae). It is responsible for human and canine leishmaniasis in countries bordering the Mediterranean basin. Here we describe a clinical case of human cutaneous leishmaniasis in a 76-year-old female patient living in Marseille. Upon interrogation, the patient had no history of recent travel or contact with animals. The study involved clinical, serological, and molecular investigation of the occurrence of Leishmania infection in 718 dogs from five departments within a 130 km radius perimeter around Marseille. Five dogs showed signs of moderate leishmaniasis. Additionally, the serological survey of dogs revealed a global seroprevalence of 5.1%, with a significantly different prevalence in the Vaucluse department. Molecular analysis and phylogenetic studies highlighted the close relatedness of Leishmania strains between human and canine hosts with 99.6% of identity, indicating local transmission. The findings underscore the importance of serological surveillance in dogs and human. In a One Health approach, it is necessary to continue investigating Leishmania infection in all potential reservoirs, especially for zoonotic L. infantum in wildlife (red foxes, leporids, rodents, etc.) but also in dogs, cats, and equids.
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Affiliation(s)
- Younes Laidoudi
- UMR D257 RITMES (Aix-Marseille University, Public Assistance-Marseille Hospitals, French Military Health Service), Marseille, France
- University Hospital Institute Mediterranean Infection, Marseille, France
| | - Jacques Sevestre
- UMR D257 RITMES (Aix-Marseille University, Public Assistance-Marseille Hospitals, French Military Health Service), Marseille, France
- University Hospital Institute Mediterranean Infection, Marseille, France
| | - Samia Bedjaoui
- UMR D257 RITMES (Aix-Marseille University, Public Assistance-Marseille Hospitals, French Military Health Service), Marseille, France
- University Hospital Institute Mediterranean Infection, Marseille, France
| | | | - Bernard Davoust
- UMR D257 RITMES (Aix-Marseille University, Public Assistance-Marseille Hospitals, French Military Health Service), Marseille, France
- University Hospital Institute Mediterranean Infection, Marseille, France
- Animal Epidemiology Expert Group of the French Military Health Service, Tours, France
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Martín-Sánchez J, Díaz-Sáez V, Morillas-Márquez F, Corpas-López V, Ibáñez-De Haro P, Torres-Llamas A, Morales-Yuste M. Wild rabbits are Leishmania infantum reservoirs in southeastern Spain. Zoonoses Public Health 2024; 71:584-590. [PMID: 38693773 DOI: 10.1111/zph.13139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 04/04/2024] [Accepted: 04/20/2024] [Indexed: 05/03/2024]
Abstract
OBJECTIVE We contribute to the understanding of the transmission dynamics of Leishmania infantum suggesting the involvement of rabbits as wild reservoirs. RESULTS The prevalence of infection was 86.0% (270/314 wild rabbits) ranging from 18.2% to 100% in natural geographical regions. The estimated average parasite load was 324.8 [CI 95% 95.3-554.3] parasites per mg of ear lobe ranging from 0 to 91,597 parasites/mg per tissue section. CONCLUSIONS A positive correlation was found between skin parasite load in wild rabbits and human incidence with evidence of the presence of the same L. infantum genotypes in rabbits and humans, providing new epidemiological and biological basis for the consideration of wild rabbits as a relevant L. infantum wild reservoir. Molecular parasite surveillance reflects the great genotypic variability of the parasite population in wild rabbits. Most of these genotypes have also been found to infect humans, dogs and sandflies in the region. Our findings also highlight that direct genotyping of the parasite in host tissues should be used for molecular surveillance of the parasite instead of cultured isolates.
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Calvo-Sánchez N, Gómez Á, Pérez E, Borobia M, Luján L, Fernández A, Villanueva-Saz S, Verde M, Marteles D. A case report of acute claudication due to vena cava thromboembolism in a dog naturally infected with Leishmania Infantum. Vet Res Commun 2024; 48:2663-2669. [PMID: 38630425 PMCID: PMC11315790 DOI: 10.1007/s11259-024-10370-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 03/26/2024] [Indexed: 08/10/2024]
Abstract
Canine leishmaniosis is a vector-borne disease caused by Leishmania infantum, and clinical manifestations of infection range from absent or severe to fatal and result from immune-mediated mechanisms. In dogs, the most common clinical signs of leishmaniosis include skin lesions and lymphadenomegaly. However, the presence of other nontypical signs has been described, and diagnosing these cases can be challenging. The aim of the present short communication was to describe the impact of the formation of circulating immunocomplexes due to L. infantum in a dog with leishmaniosis affected by a massive venous thrombus of the caudal vena cava and external iliac veins. On admission, the dog presented bilateral cutaneous vasculopathy of the thigh and renal disease due to L. infantum infection. Two weeks after starting anti-Leishmania treatment based on meglumine antimoniate and allopurinol administration, the animal developed acute claudication of the hind limbs with the presence of a thrombus in the caudal vena cava and the external iliac veins and a high level of circulating immunocomplexes detected by enzyme-linked immunosorbent assay. Exacerbation of the humoral immune response, along with deposition of circulating immune complexes in the tissues and the concurrent presence of kidney and liver damage, might have contributed to an imbalance in haemostasis in this patient. Future studies should evaluate and analyse the pathological mechanisms contributing to thrombosis in dogs with leishmaniosis.
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Affiliation(s)
- Natalia Calvo-Sánchez
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain
| | - Álex Gómez
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain
| | - Estela Pérez
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain
| | - María Borobia
- Veterinary Faculty, Veterinary Teaching Hospital, University of Zaragoza, Zaragoza, 50013, Spain
| | - Lluís Luján
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain
| | - Antonio Fernández
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain
- Clinical Immunology Laboratory, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain
- Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, 50013, Spain
| | - Sergio Villanueva-Saz
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain.
- Clinical Immunology Laboratory, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain.
- Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, 50013, Spain.
| | - Maite Verde
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain
- Clinical Immunology Laboratory, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain
- Instituto Agroalimentario de Aragón-IA2 (Universidad de Zaragoza-CITA), Zaragoza, 50013, Spain
| | - Diana Marteles
- Department of Animal Pathology, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain
- Clinical Immunology Laboratory, Veterinary Faculty, University of Zaragoza, Zaragoza, 50013, Spain
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Digiaro S, Recchia A, Colella A, Cucciniello S, Greco B, Buonfrate D, Paradies P. Treatment of Canine Leishmaniasis with Meglumine Antimoniate: A Clinical Study of Tolerability and Efficacy. Animals (Basel) 2024; 14:2244. [PMID: 39123770 PMCID: PMC11310949 DOI: 10.3390/ani14152244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 07/27/2024] [Accepted: 07/29/2024] [Indexed: 08/12/2024] Open
Abstract
Antimoniate therapy, in association with allopurinol, is one of the first-line treatments of canine leishmaniasis (CanL). This study evaluates the potential adverse effects associated with aNm in the treatment of CanL through both a retrospective analysis and a long-term prospective study also aimed to investigate its efficacy. The retrospective study reviewed records of 87 dogs with CanL with at least one follow-up available during or at the end of therapy with aNm (Glucantime®) at a dose of 50 mg/kg administered subcutaneously twice a day in association with allopurinol. In total, 29.8% of dogs showed adverse effects during treatment as local reactions at the injection site (n = 6), severe systemic reaction to pain (originating from the inoculation site) with depression and anorexia (n = 4), systemic disease due to renal function worsening (n = 4), acute pancreatitis (n = 1), diarrhea (n = 5), vomiting (n = 3) and severe idiosyncratic skin reactions (n = 3). Of these dogs, 13 (14.9%) required treatment suspension. The prospective study included 16 dogs, selected among the LeishVet stages II and III CKD IRIS stage 1 (International Renal Interest Society staging of canine Chronic Kidney Disease) and treated with the same aNm plus allopurinol protocol as in the retrospective study and observed for 360 days; 2 dogs were excluded for severe reactions at the injection site. Mild and transient adverse events were reported in the other 4 dogs. The criteria used to evaluate the efficacy of treatment with aNm were as follows: a reduction in the clinical score and improvement and/or normalization of laboratory parameters, negativization of PCR on the bone marrow samples and disease-free interval time. The proportion of reduction in the clinical score reached 91.9% at D180. No animals showed clinical laboratory relapse during the whole study duration and interestingly, the PCR results showed complete negativity between D0 and D60 in 78.5% of animals. Veterinarians must be vigilant regarding the potentially serious adverse effects associated with aNm and promptly stop drug administration if unexpected clinical manifestations occur. On the other hand, they should not discard its use for CanL treatment since it is confirmed that aNm in association with allopurinol is highly effective in controlling CanL.
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Affiliation(s)
- Serena Digiaro
- Department DiMePre-J, Veterinary Section, University of Bari “Aldo Moro”, Strada Provinciale Casamassima km3, Valenzano, 70010 Bari, Italy; (S.D.); (A.R.); (A.C.); (S.C.); (B.G.)
| | - Alessandra Recchia
- Department DiMePre-J, Veterinary Section, University of Bari “Aldo Moro”, Strada Provinciale Casamassima km3, Valenzano, 70010 Bari, Italy; (S.D.); (A.R.); (A.C.); (S.C.); (B.G.)
| | - Antonella Colella
- Department DiMePre-J, Veterinary Section, University of Bari “Aldo Moro”, Strada Provinciale Casamassima km3, Valenzano, 70010 Bari, Italy; (S.D.); (A.R.); (A.C.); (S.C.); (B.G.)
| | - Sara Cucciniello
- Department DiMePre-J, Veterinary Section, University of Bari “Aldo Moro”, Strada Provinciale Casamassima km3, Valenzano, 70010 Bari, Italy; (S.D.); (A.R.); (A.C.); (S.C.); (B.G.)
| | - Beatrice Greco
- Department DiMePre-J, Veterinary Section, University of Bari “Aldo Moro”, Strada Provinciale Casamassima km3, Valenzano, 70010 Bari, Italy; (S.D.); (A.R.); (A.C.); (S.C.); (B.G.)
| | - Dora Buonfrate
- Department of Infectious, Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar, 37024 Verona, Italy;
| | - Paola Paradies
- Department DiMePre-J, Veterinary Section, University of Bari “Aldo Moro”, Strada Provinciale Casamassima km3, Valenzano, 70010 Bari, Italy; (S.D.); (A.R.); (A.C.); (S.C.); (B.G.)
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Zhao X, Ma L, Jin Y, Barkema HW, Kastelic JP, Wang L, Wen K, Liu G. Rapid and reliable detection of Leishmania antibodies in canine serum with double-antigen sandwich homogeneous chemical luminescence. Parasit Vectors 2024; 17:323. [PMID: 39080758 PMCID: PMC11290120 DOI: 10.1186/s13071-024-06389-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 07/03/2024] [Indexed: 08/02/2024] Open
Abstract
BACKGROUND Leishmaniasis, caused by Leishmania spp. parasites, is an important zoonotic disease globally, posing severe threats to humans and animals. In the absence of effective vaccines, reliable serological diagnostic methods are critical for disease control. However, the enzyme-linked immunosorbent assay (ELISA) and immunochromatographic assay have limitations due to complexity, time required and/or sensitivity. Therefore, our objective was to develop an accurate, rapid and user-friendly detection method of canine leishmania antibody based on double-antigen sandwich homogeneous chemical luminescence. METHODS Homogeneous chemiluminescent technology was employed, and expressed recombinant fusion proteins containing full-length K9, K39 and K26 repeat sequences were used as diagnostic antigens. To establish a dual-antigen sandwich serological assay capable of detecting various antibody types, a factorial design was used to optimize concentrations of diagnostic antigen-receptor microspheres and of biotinylated diagnostic antigens, as well as of reaction solution composition and reaction duration. To evaluate and validate this newly developed method, we collected 41 Leishmania-positive serum samples, 30 Leishmania-negative control serum samples and 78 clinical serum samples for which no diagnostic information was available. Comparative analyses were performed using parasitological testing and an indirect ELISA as reference methods, focusing on diagnostic sensitivity and specificity. RESULTS Sodium dodecyl sulfate-polyacrylamide gel electrophoresis confirmed the purification of the diagnostic antigens, which exhibited clear bands without impurities. Based on results from the 41 Leishmania-positive samples and 30 Leishmania-negative samples, there was sufficient sensitivity to detect samples diluted up to 256-fold, with analytical specificity of 100%. Overall diagnostic sensitivity was 100% and diagnostic specificity was 93.3%. Diagnostic performance was highly consistent between the newly developed method and the indirect ELISA (Kappa = 0.82, P < 0.01). Testing could be completed within 35 min with the new method CONCLUSIONS: We have developed a novel double-antigen sandwich homogeneous chemical luminescence method to detect canine Leishmania antibodies, with high sensitively and specificity, a short incubation interval and a simple protocol. This streamlined approach not only offers a sensitive and efficient method for clinical diagnosis but also has great potential for use in automated testing.
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Affiliation(s)
- Xiangjun Zhao
- National Key Laboratory of Veterinary Public Health Safety, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Licai Ma
- Beijing Weideweikang Biotechnology Co., Ltd, Beijing, 100080, People's Republic of China
| | - Yipeng Jin
- National Key Laboratory of Veterinary Public Health Safety, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Herman W Barkema
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
| | - John P Kastelic
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
| | - Lu Wang
- National Key Laboratory of Veterinary Public Health Safety, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China
| | - Kai Wen
- National Key Laboratory of Veterinary Public Health Safety, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China.
| | - Gang Liu
- National Key Laboratory of Veterinary Public Health Safety, Beijing Key Laboratory of Detection Technology for Animal Derived Food Safety, Beijing Laboratory for Food Quality and Safety, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, People's Republic of China.
- Veterinary Teaching Hospital, College of Veterinary Medicine, China Agricultural University, Beijing, China.
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DeWinter S, Shahin K, Fernandez-Prada C, Greer AL, Weese JS, Clow KM. Ecological determinants of leishmaniasis vector, Lutzomyia spp.: A scoping review. MEDICAL AND VETERINARY ENTOMOLOGY 2024. [PMID: 39011830 DOI: 10.1111/mve.12741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 06/26/2024] [Indexed: 07/17/2024]
Abstract
Leishmania spp. are zoonotic parasites transmitted by phlebotomine sand flies, including those of the Lutzomyia genus, which can cause leishmaniases in both humans and dogs. Lutzomyia spp. are established in many countries in South and Central America and some areas of the southern United States, with suspected potential of these vectors to undergo further range expansion due to climate change. A scoping review was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extensions for Scoping Reviews (PRISMA-ScR) guidelines to describe the current state of knowledge on the key ecological factors associated with Lutzomyia spp. survival, reproduction and establishment. The following electronic databases were searched for eligible studies published from 1 January 1990, to the date of search, 26 April 2023: CAB Direct (CABI), MEDLINE (via Ovid), Biological Sciences Database and Environmental Sciences Database. Primary research articles that were available in English and focused on ecological factors associated with Lutzomyia spp., such as climatic and habitat factors, geographic range, seasonality and temporality, and host abundance, were eligible for inclusion in the study. Following de-duplication, a total of 167 studies were included in Level 1 screening, 64 studies were included in Level 2 screening and 31 studies met the criteria for data extraction. Study locations included Argentina, Brazil, Colombia, Peru, Venezuela, the United States, Mexico and Canada, with some studies including multiple regions. A total of 31 different Lutzomyia spp. were assessed across these studies, with most (51.6%) of the studies focused on Lutzomyia longipalpis. Eligible studies investigated factors such as seasonality (n = 5), temperature (n = 19), precipitation (n = 13), humidity (n = 2), vegetation presence or requirements (n = 13), ecotypes (n = 7), and/or community type (i.e., urban, suburban, rural) (n = 5). Lutzomyia spp. activity was found to be higher during the rainy season, and peak when temperatures were between 20 and 25°C. Lutzomyia spp. were also found to preferentially reside in tropical or subtropical forests, which are characterised by their lack of a distinct dry season and high precipitation. This scoping review summarised the current state of the literature on the ecological factors associated with the survival, activity and reproduction of Lutzomyia spp. While there appears to be some consensus in the literature regarding some ecological requirements (such as seasonality, temperature and habitat features), overall, there is a lack of published research in this topic. This poses a significant challenge for future studies, which aim to predict the future distribution of Lutzomyia spp. in the context of climate and land use changes. Additional ecological research is urgently needed on Lutzomyia spp. given their relevance to both human and animal health.
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Affiliation(s)
- Sydney DeWinter
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Keana Shahin
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Christopher Fernandez-Prada
- Department of Pathology and Microbiology, Faculty of Veterinary Medicine, University of Montreal, Montreal, Quebec, Canada
| | - Amy L Greer
- Department of Biology, Trent University, Peterborough, Ontario, Canada
| | - J Scott Weese
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Katie M Clow
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
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Olmeda P, Díaz-Regañón D, Villaescusa A, Amusategui I, García A, Herrero F, Tesouro MA, Rodríguez-Franco F, García-Sancho M, Martín-Fraile D, Sainz Á. Twenty-year evolution of Leishmania infantum infection in dogs in Valdeorras (Galicia, Northwestern Spain): implication of climatic factors and preventive measures. Parasit Vectors 2024; 17:281. [PMID: 38951858 PMCID: PMC11218365 DOI: 10.1186/s13071-024-06357-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 06/15/2024] [Indexed: 07/03/2024] Open
Abstract
BACKGROUND Abiotic factors play a significant role in the evolution of Leishmania infantum infection due to its vectorial nature. This study aims to assess the evolution in the detection of new L. infantum infection cases in Valdeorras (Ourense, Northwestern Spain) over a 20-year period and how different climatic variables and preventive measures may have affected it. METHODS Indirect immunofluorescence antibody tests (IFAT) were performed on serum samples collected from dogs attending the 'Servicios Veterinarios de Sil' veterinary clinic (Valdeorras, Northwestern Spain) between May 2003 and April 2023 to detect L. infantum exposure. The percentage of new cases of L. infantum infection was calculated from May of one year to April of the following year. Climatic conditions in the region, global sales of ectoparasiticides and the number of vaccines against L. infantum delivered in the veterinary clinic from 2003 to 2022 were recorded. Statistical analyses were conducted to determine the associations between these factors and the percentage of new cases of L. infantum infection. RESULTS A total of 2909 dogs were assessed, and 3785 IFAT tests were performed between May 2003 and April 2023. The mean percentage of new seropositive cases over the 20-year period studied was 21.65 ± 10.8%, with a decline from the beginning to the end of the period studied. The percentage was significantly higher between May 2003 and April 2008 compared with the other periods (May 2008 to April 2013, May 2013 to April 2018 and May 2018 to April 2023). There was a positive correlation between the percentage of new cases of L. infantum infection and the maximum relative humidity in winter. Conversely, there was a negative correlation between the percentage of new cases and sales of ectoparasiticides and vaccination against L. infantum. CONCLUSIONS This study is one of the longest evaluations of the evolution of L. infantum infection in a fixed location and its association with external factors including climatic conditions and preventive measures. The results confirm that Valdeorras is a high-risk area for L. infantum infection. The use of ectoparasiticides and vaccines against L. infantum has been shown to play a significant role in preventing L. infantum infection, highlighting the crucial role of veterinarians in the fight against this disease.
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Affiliation(s)
- Patricia Olmeda
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro S/N, 28040, Madrid, Spain
| | - David Díaz-Regañón
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro S/N, 28040, Madrid, Spain
| | - Alejandra Villaescusa
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro S/N, 28040, Madrid, Spain
| | - Inmaculada Amusategui
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro S/N, 28040, Madrid, Spain
| | - Adolfo García
- Veterinary Clinic "Servicios Veterinarios del Sil", C/ Coruña 9, O Barco de Valdeorras, 32300, Ourense, Spain
| | - Francisco Herrero
- Veterinary Clinic "Servicios Veterinarios del Sil", C/ Coruña 9, O Barco de Valdeorras, 32300, Ourense, Spain
| | - Miguel A Tesouro
- Department of Veterinary Medicine, Surgery and Anatomy, College of Veterinary Medicine, University of León, Campus de Vegazana, 24071, León, Spain
| | - Fernando Rodríguez-Franco
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro S/N, 28040, Madrid, Spain
| | - Mercedes García-Sancho
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro S/N, 28040, Madrid, Spain
| | - Daniel Martín-Fraile
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro S/N, 28040, Madrid, Spain
| | - Ángel Sainz
- Department of Animal Medicine and Surgery, College of Veterinary Medicine, Complutense University of Madrid, Avda. Puerta de Hierro S/N, 28040, Madrid, Spain.
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8
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Stoimenov GM, Tchakarova S. Detection of Leishmania infantum Antibodies in Stray Dogs from Nonendemic Areas in Bulgaria. Vector Borne Zoonotic Dis 2024; 24:424-427. [PMID: 38621148 DOI: 10.1089/vbz.2023.0062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024] Open
Abstract
Background: Leishmaniasis is a zoonotic protozoan infection which is endemic in parts of Europe. Dogs are commonly affected by Leishmania infantum and are regarded as the main reservoir for humans' infection. Sporadic human cases are reported annually, mainly from the endemic south part of Bulgaria. However, no recent data on canine leishmaniasis geographical distribution in Bulgaria have been published. The aim of this study was to investigate the current seroprevalence rate of L. infantum in stray dogs from areas where this infection was not previously reported. Results: The estimated overall seroprevalence rate was 8.3% (95% confidence interval [CI]: 2.6-14.0) with no significant difference between the two examined districts [χ2 (1, N = 90) = 0.32, p = 0.69]. In Sofia, the seropositivity was 7.2% (95% CI: 0.9-13.5) and in Sofia (stolitsa) 11.0% (95% CI: 0-23.0). No association between sex and serological status [χ2 (1, N = 90) = 1.83, p = 0.27] and age and seropositivity [χ2 (2, N = 90) = 1.98, p = 0.52] was detected. High levels of antibodies (fourfold increase from the assay's cut-off) were observed in half of the positive dogs.
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Affiliation(s)
- Georgi M Stoimenov
- Department of Infectious Pathology and Food Hygiene, Faculty of Veterinary Medicine, University of Forestry, Sofia, Bulgaria
| | - Simona Tchakarova
- Department of Exotic and Emerging Diseases, National Diagnostic and Research Veterinary Medical Institute, Sofia, Bulgaria
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Al-Ashwal MA, Al-Adhroey AH, Atroosh WM, Al-Subbary AA, Albhri AA, Azlan UW, Tan JH, Alkhali AA, Alshoteri SA, Sady H, Alharazi TH, Lau YL, Al-Mekhlafi HM. First report of Leishmania tropica in domestic and wild animal hosts in hyperendemic areas of human cutaneous leishmaniasis in western Yemen: a neglected tropical disease needing One Health approach. Parasitol Res 2024; 123:256. [PMID: 38935203 DOI: 10.1007/s00436-024-08273-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024]
Abstract
Cutaneous leishmaniasis (CL), a neglected tropical disease, is a major public health concern in Yemen, with Leishmania tropica identified as the main causative agent. This study aims to investigate the occurrence and distribution of Leishmania parasites in domestic and wild animals in CL endemic areas in the western highlands of Yemen. A cross-sectional study was conducted in the Utmah District of western Yemen. Blood and skin scraping specimens were collected from 122 domestic and wild animals and tested for the Leishmania DNA using internal transcribed spacer 1 (ITS1) nested polymerase chain reaction. Phylogenetic analyses were performed on 20 L. tropica sequences obtained from animals in this study and 34 sequences from human isolates (collected concurrently from the same study area) retrieved from the GenBank. Overall, L. tropica was detected in 16.4% (20/122) of the examined animals, including 11 goats, two dogs, two bulls, one cow, one donkey, one rabbit, one rat and one bat. None of the examined cats and sheep was positive. The animal sequences were segregated into four different L. tropica haplotypes, with the majority of the animal (15/20) and human (32/34) sequences composed of one dominant haplotype/genotype. These findings represent the first confirmed evidence of natural L. tropica infections in different kinds of domestic and wild animals in western Yemen, suggesting these animals potentially have a role in the transmission of CL in Yemen. Therefore, a One Health approach is required for the effective prevention and control of this devastating disease among endemic populations.
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Affiliation(s)
- Manal Ali Al-Ashwal
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | | | - Wahib M Atroosh
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
- Department of Microbiology and Parasitology, Faculty of Medicine and Health Sciences, University of Aden, Aden, Yemen.
| | | | - Adel Ahmed Albhri
- Al-Medan Health Centre, Ministry of Health and Population, Dhamar, Yemen
| | - Ummi Wahidah Azlan
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Jia Hui Tan
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Arwa Ahmed Alkhali
- Laboratory of Biotechnology, Environment and Quality, Faculty of Sciences, Ibn Tofail University, Kenitra, Morocco
| | - Sheikh Abdulhafed Alshoteri
- Department of Microbiology and Parasitology, Faculty of Medicine and Health Sciences, University of Aden, Aden, Yemen
| | - Hany Sady
- Centre for Child, Adolescent and Maternal Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Talal H Alharazi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, University of Hail, Hail, Kingdom of Saudi Arabia
- Department of Medical Parasitology, Faculty of Medicine and Health Sciences, Taiz University, Taiz, Yemen
| | - Yee-Ling Lau
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Hesham M Al-Mekhlafi
- Department of Parasitology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
- Department of Epidemiology, Faculty of Public Health and Tropical Medicine, Jazan University, 45142, Jazan, Saudi Arabia.
- Department of Parasitology, Faculty of Medicine and Health Sciences, Sana'a University, Sana'a 1247, Yemen.
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10
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Latrofa MS, Cereda M, Louzada-Flores VN, Dantas-Torres F, Otranto D. Q3 lab-on-chip real-time PCR for the diagnosis of Leishmania infantum infection in dogs. J Clin Microbiol 2024; 62:e0010424. [PMID: 38661386 PMCID: PMC11237631 DOI: 10.1128/jcm.00104-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 04/01/2024] [Indexed: 04/26/2024] Open
Abstract
Leishmaniasis is a vector-borne disease caused by many Leishmania spp. which infect humans and other mammalian hosts. Leishmania infantum is the main agent of canine leishmaniasis (CanL) whose diagnosis is usually confirmed by serological and molecular tests. This study aimed to evaluate the clinical and analytical sensitivities of a lab-on-chip (LOC) real-time PCR applied on the portable Q3-Plus V2 platform (Q3 qPCR) in the detection of L. infantum. The Q3 qPCR performance was assessed by comparing the quantification cycle (Cq) values with those obtained using the qPCR run on a CFX96 Real-Time System (CFX96 qPCR). A total of 173 DNA samples (extracted from bone marrow, lymph node, blood, buffy coat, conjunctival swab, and skin) as well as 93 non-extracted samples (NES) (bone marrow, lymph node, blood, and buffy coat) collected from dogs were tested with both systems. Serial dilutions of each representative DNA and NES sample were used to assess the analytical sensitivity of the Q3 qPCR system. Overlapping Cq values were obtained with the Q3 qPCR and CFX96 qPCR, both using DNA extracted from L. infantum promastigotes (limit of detection, <1 promastigote per milliliter) and from biological samples as well as with NES. However, the Q3 qPCR system showed a higher sensitivity in detecting L. infantum in NES as compared with the CFX96 qPCR. Our data indicate that the Q3 qPCR system could be a reliable tool for detecting L. infantum DNA in biological samples, bypassing the DNA extraction step, which represents an advance in the point-of-care diagnostic of CanL.
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Affiliation(s)
| | - Marco Cereda
- STMicroelectronics Srl, Agrate Brianza (MB), Italy
| | | | - Filipe Dantas-Torres
- Department of Veterinary Medicine, University of Bari, Bari, Italy
- Instituto Aggeu Magalhães, Fundação Oswaldo Cruz (Fiocruz), Recife, Pernambuco, Brazil
| | - Domenico Otranto
- Department of Veterinary Medicine, University of Bari, Bari, Italy
- Department of Veterinary Clinical Sciences, City University of Hong Kong, Kowloon Tong, Hong Kong
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11
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Ferrante M, Leite BMM, Fontes LBC, Santos Moreira A, Nascimento de Almeida ÉM, Brodskyn CI, Lima IDS, dos Santos WLC, Pacheco LV, Cardoso da Silva V, dos Anjos JP, Guarieiro LLN, Landoni F, de Menezes JPB, Fraga DBM, Santos Júnior ADF, Veras PST. Pharmacokinetics, Dose-Proportionality, and Tolerability of Intravenous Tanespimycin (17-AAG) in Single and Multiple Doses in Dogs: A Potential Novel Treatment for Canine Visceral Leishmaniasis. Pharmaceuticals (Basel) 2024; 17:767. [PMID: 38931434 PMCID: PMC11206245 DOI: 10.3390/ph17060767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 05/02/2024] [Accepted: 05/14/2024] [Indexed: 06/28/2024] Open
Abstract
In the New World, dogs are considered the main reservoir of visceral leishmaniasis (VL). Due to inefficacies in existing treatments and the lack of an efficient vaccine, dog culling is one of the main strategies used to control disease, making the development of new therapeutic interventions mandatory. We previously showed that Tanespimycin (17-AAG), a Hsp90 inhibitor, demonstrated potential for use in leishmaniasis treatment. The present study aimed to test the safety of 17-AAG in dogs by evaluating plasma pharmacokinetics, dose-proportionality, and the tolerability of 17-AAG in response to a dose-escalation protocol and multiple administrations at a single dose in healthy dogs. Two protocols were used: Study A: four dogs received variable intravenous (IV) doses (50, 100, 150, 200, or 250 mg/m2) of 17-AAG or a placebo (n = 4/dose level), using a cross-over design with a 7-day "wash-out" period; Study B: nine dogs received three IV doses of 150 mg/m2 of 17-AAG administered at 48 h intervals. 17-AAG concentrations were determined by a validated high-performance liquid chromatographic (HPLC) method: linearity (R2 = 0.9964), intra-day precision with a coefficient of variation (CV) ≤ 8%, inter-day precision (CV ≤ 20%), and detection and quantification limits of 12.5 and 25 ng/mL, respectively. In Study A, 17-AAG was generally well tolerated. However, increased levels of liver enzymes-alanine aminotransferase (ALT), aspartate aminotransferase (AST), and gamma-glutamyl transferase (GGT)-and bloody diarrhea were observed in all four dogs receiving the highest dosage of 250 mg/m2. After single doses of 17-AAG (50-250 mg/m2), maximum plasma concentrations (Cmax) ranged between 1405 ± 686 and 9439 ± 991 ng/mL, and the area under the curve (AUC) plotting plasma concentration against time ranged between 1483 ± 694 and 11,902 ± 1962 AUC 0-8 h μg/mL × h, respectively. Cmax and AUC parameters were dose-proportionate between the 50 and 200 mg/m2 doses. Regarding Study B, 17-AAG was found to be well tolerated at multiple doses of 150 mg/m2. Increased levels of liver enzymes-ALT (28.57 ± 4.29 to 173.33 ± 49.56 U/L), AST (27.85 ± 3.80 to 248.20 ± 85.80 U/L), and GGT (1.60 ± 0.06 to 12.70 ± 0.50 U/L)-and bloody diarrhea were observed in only 3/9 of these dogs. After the administration of multiple doses, Cmax and AUC 0-48 h were 5254 ± 2784 μg/mL and 6850 ± 469 μg/mL × h in plasma and 736 ± 294 μg/mL and 7382 ± 1357 μg/mL × h in tissue transudate, respectively. In conclusion, our results demonstrate the potential of 17-AAG in the treatment of CVL, using a regimen of three doses at 150 mg/m2, since it presents the maintenance of high concentrations in subcutaneous interstitial fluid, low toxicity, and reversible hepatotoxicity.
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Affiliation(s)
- Marcos Ferrante
- Laboratory of Physiology and Pharmacology, Department of Veterinary Medicine, Federal University of Lavras, Lavras 37200-000, Minas Gerais, Brazil;
- Laboratory of Host-Parasite Interaction and Epidemiology, Gonçalo Moniz Institute, Fiocruz-Bahia, Salvador 40296-710, Bahia, Brazil; (B.M.M.L.); (L.B.C.F.); (A.S.M.); (É.M.N.d.A.); (C.I.B.); (J.P.B.d.M.); (D.B.M.F.)
| | - Bruna Martins Macedo Leite
- Laboratory of Host-Parasite Interaction and Epidemiology, Gonçalo Moniz Institute, Fiocruz-Bahia, Salvador 40296-710, Bahia, Brazil; (B.M.M.L.); (L.B.C.F.); (A.S.M.); (É.M.N.d.A.); (C.I.B.); (J.P.B.d.M.); (D.B.M.F.)
| | - Lívia Brito Coelho Fontes
- Laboratory of Host-Parasite Interaction and Epidemiology, Gonçalo Moniz Institute, Fiocruz-Bahia, Salvador 40296-710, Bahia, Brazil; (B.M.M.L.); (L.B.C.F.); (A.S.M.); (É.M.N.d.A.); (C.I.B.); (J.P.B.d.M.); (D.B.M.F.)
| | - Alice Santos Moreira
- Laboratory of Host-Parasite Interaction and Epidemiology, Gonçalo Moniz Institute, Fiocruz-Bahia, Salvador 40296-710, Bahia, Brazil; (B.M.M.L.); (L.B.C.F.); (A.S.M.); (É.M.N.d.A.); (C.I.B.); (J.P.B.d.M.); (D.B.M.F.)
| | - Élder Muller Nascimento de Almeida
- Laboratory of Host-Parasite Interaction and Epidemiology, Gonçalo Moniz Institute, Fiocruz-Bahia, Salvador 40296-710, Bahia, Brazil; (B.M.M.L.); (L.B.C.F.); (A.S.M.); (É.M.N.d.A.); (C.I.B.); (J.P.B.d.M.); (D.B.M.F.)
| | - Claudia Ida Brodskyn
- Laboratory of Host-Parasite Interaction and Epidemiology, Gonçalo Moniz Institute, Fiocruz-Bahia, Salvador 40296-710, Bahia, Brazil; (B.M.M.L.); (L.B.C.F.); (A.S.M.); (É.M.N.d.A.); (C.I.B.); (J.P.B.d.M.); (D.B.M.F.)
| | - Isadora dos Santos Lima
- Laboratory of Structural and Molecular Pathology, Gonçalo Moniz Institute, Fiocruz-Bahia, Salvador 40296-710, Bahia, Brazil; (I.d.S.L.); (W.L.C.d.S.)
| | - Washington Luís Conrado dos Santos
- Laboratory of Structural and Molecular Pathology, Gonçalo Moniz Institute, Fiocruz-Bahia, Salvador 40296-710, Bahia, Brazil; (I.d.S.L.); (W.L.C.d.S.)
- Department of Pathology and Forensic Medicine, Bahia Medical School, Federal University of Bahia, Salvador 40110-906, Bahia, Brazil
| | - Luciano Vasconcellos Pacheco
- Department of Life Sciences, State University of Bahia, Salvador 41150-000, Bahia, Brazil; (L.V.P.); (V.C.d.S.); (A.d.F.S.J.)
| | - Vagner Cardoso da Silva
- Department of Life Sciences, State University of Bahia, Salvador 41150-000, Bahia, Brazil; (L.V.P.); (V.C.d.S.); (A.d.F.S.J.)
| | - Jeancarlo Pereira dos Anjos
- Integrated Campus of Manufacturing and Technology, SENAI CIMATEC University Center, Salvador 41650-010, Bahia, Brazil; (J.P.d.A.); (L.L.N.G.)
| | - Lílian Lefol Nani Guarieiro
- Integrated Campus of Manufacturing and Technology, SENAI CIMATEC University Center, Salvador 41650-010, Bahia, Brazil; (J.P.d.A.); (L.L.N.G.)
| | - Fabiana Landoni
- Department of Pharmacology, Faculty of Veterinary Science, National University of La Plata, Buenos Aires 1900, Argentina;
| | - Juliana P. B. de Menezes
- Laboratory of Host-Parasite Interaction and Epidemiology, Gonçalo Moniz Institute, Fiocruz-Bahia, Salvador 40296-710, Bahia, Brazil; (B.M.M.L.); (L.B.C.F.); (A.S.M.); (É.M.N.d.A.); (C.I.B.); (J.P.B.d.M.); (D.B.M.F.)
| | - Deborah Bittencourt Mothé Fraga
- Laboratory of Host-Parasite Interaction and Epidemiology, Gonçalo Moniz Institute, Fiocruz-Bahia, Salvador 40296-710, Bahia, Brazil; (B.M.M.L.); (L.B.C.F.); (A.S.M.); (É.M.N.d.A.); (C.I.B.); (J.P.B.d.M.); (D.B.M.F.)
- Department of Preventive Veterinary Medicine and Animal Production, School of Veterinary Medicine and Animal Science, Federal University of Bahia, Salvador 40170-110, Bahia, Brazil
- National Institute of Science and Technology of Tropical Diseases (INCT-DT), National Council for Scientific Research and Development (CNPq)
| | - Aníbal de Freitas Santos Júnior
- Department of Life Sciences, State University of Bahia, Salvador 41150-000, Bahia, Brazil; (L.V.P.); (V.C.d.S.); (A.d.F.S.J.)
| | - Patrícia Sampaio Tavares Veras
- Laboratory of Host-Parasite Interaction and Epidemiology, Gonçalo Moniz Institute, Fiocruz-Bahia, Salvador 40296-710, Bahia, Brazil; (B.M.M.L.); (L.B.C.F.); (A.S.M.); (É.M.N.d.A.); (C.I.B.); (J.P.B.d.M.); (D.B.M.F.)
- National Institute of Science and Technology of Tropical Diseases (INCT-DT), National Council for Scientific Research and Development (CNPq)
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12
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García M, Ferrer L, Ordeix L. Critically Appraised Topic on Canine Leishmaniosis: Does Treatment with Antimonials and Allopurinol Have the Same Clinical and Clinicopathological Efficacy as Treatment with Miltefosine and Allopurinol, after One Month of Treatment? Vet Sci 2024; 11:231. [PMID: 38921978 PMCID: PMC11209642 DOI: 10.3390/vetsci11060231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/25/2024] [Accepted: 05/18/2024] [Indexed: 06/27/2024] Open
Abstract
The treatment of canine leishmaniosis commonly involves meglumine antimoniate with allopurinol or miltefosine with allopurinol. This study aims to compare the clinical and clinicopathological efficacy at 28-30 days of conventional dosing regimens for both treatments using the critically appraised topic methodology. A comprehensive search across three databases (PubMed, CAB Abstracts, and Web of Science) from March 2004 to September 2023 yielded 16 relevant articles, encompassing 325 ogs treated with meglumine antimoniate and allopurinol, and 273 dogs treated with miltefosine and allopurinol. The findings indicated a significantly higher rate of complete clinical cure in the group treated with meglumine antimoniate and allopurinol. Most dogs in both groups exhibited improvement in clinicopathological alterations after one month of treatment. No significant difference was observed in the number of dogs that showed a negative Leishmania qPCR between the two groups, one month post-treatment. However, quantitative serology results were not commonly reported in the available data and therefore this aspect could not be compared.
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Affiliation(s)
| | | | - Laura Ordeix
- Departament de Medicina i Cirurgia Animals, Fundació Hospital Clínic Veterinari, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; (M.G.); (L.F.)
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13
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van Dijk NJ, Hagos DG, Huggins DM, Carrillo E, Ajala S, Chicharro C, Kiptanui D, Solana JC, Abner E, Wolday D, Schallig HDFH. Simplified molecular diagnosis of visceral leishmaniasis: Laboratory evaluation of miniature direct-on-blood PCR nucleic acid lateral flow immunoassay. PLoS Negl Trop Dis 2024; 18:e0011637. [PMID: 38713648 DOI: 10.1371/journal.pntd.0011637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 04/15/2024] [Indexed: 05/09/2024] Open
Abstract
BACKGROUND Diagnosis of visceral leishmaniasis (VL) in resource-limited endemic regions is currently based on serological testing with rK39 immunochromatographic tests (ICTs). However, rK39 ICT frequently has suboptimal diagnostic accuracy. Furthermore, treatment monitoring and detection of VL relapses is reliant on insensitive and highly invasive tissue aspirate microscopy. Miniature direct-on-blood PCR nucleic acid lateral flow immunoassay (mini-dbPCR-NALFIA) is an innovative and user-friendly molecular tool which does not require DNA extraction and uses a lateral flow strip for result read-out. This assay could be an interesting candidate for more reliable VL diagnosis and safer test of cure at the point of care. METHODOLOGY/PRINCIPLE FINDINGS The performance of mini-dbPCR-NALFIA for diagnosis of VL in blood was assessed in a laboratory evaluation and compared with the accuracy of rK39 ICTs Kalazar Detect in Spain and IT LEISH in East Africa. Limit of detection of mini-dbPCR-NALFIA was 650 and 500 parasites per mL of blood for Leishmania donovani and Leishmania infantum, respectively. In 146 blood samples from VL-suspected patients from Spain, mini-dbPCR-NALFIA had a sensitivity of 95.8% and specificity 97.2%, while Kalazar Detect had a sensitivity of 71.2% and specificity of 94.5%, compared to a nested PCR reference. For a sample set from 58 VL patients, 10 malaria patients and 68 healthy controls from Ethiopia and Kenya, mini-dbPCR-NALFIA had a pooled sensitivity of 87.9% and pooled specificity of 100% using quantitative PCR as reference standard. IT LEISH sensitivity and specificity in the East African samples were 87.9% and 97.4%, respectively. CONCLUSIONS/SIGNIFICANCE Mini-dbPCR-NALFIA is a promising tool for simplified molecular diagnosis of VL and follow-up of treated patients in blood samples. Future studies should evaluate its use in endemic, resource-limited settings, where mini-dbPCR-NALFIA may provide an accurate and versatile alternative to rK39 ICTs and aspirate microscopy.
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Affiliation(s)
- Norbert J van Dijk
- Amsterdam University Medical Centre, Department of Medical Microbiology and Infection Prevention, Experimental Parasitology, Amsterdam, the Netherlands
- Amsterdam Institute for Infection and Immunity, Infectious Diseases Programme, Amsterdam, the Netherlands
| | - Dawit Gebreegziabiher Hagos
- Amsterdam University Medical Centre, Department of Medical Microbiology and Infection Prevention, Experimental Parasitology, Amsterdam, the Netherlands
- Amsterdam Institute for Infection and Immunity, Infectious Diseases Programme, Amsterdam, the Netherlands
- College of Health Sciences, School of Medicine, Department of Medical Microbiology and Immunology, Mekelle University, Mekelle, Ethiopia
| | - Daniela M Huggins
- Amsterdam University Medical Centre, Department of Medical Microbiology and Infection Prevention, Experimental Parasitology, Amsterdam, the Netherlands
| | - Eugenia Carrillo
- WHO Collaborating Centre for Leishmaniasis, National Center for Microbiology, Instituto de Salud Carlos III, Majadahonda (Madrid), Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC-ISCIII), Madrid, Spain
| | - Sophia Ajala
- Amsterdam University Medical Centre, Department of Medical Microbiology and Infection Prevention, Experimental Parasitology, Amsterdam, the Netherlands
| | - Carmen Chicharro
- WHO Collaborating Centre for Leishmaniasis, National Center for Microbiology, Instituto de Salud Carlos III, Majadahonda (Madrid), Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC-ISCIII), Madrid, Spain
| | - David Kiptanui
- Kacheliba Sub-County Hospital, Kacheliba, West Pokot County, Kenya
| | - Jose Carlos Solana
- WHO Collaborating Centre for Leishmaniasis, National Center for Microbiology, Instituto de Salud Carlos III, Majadahonda (Madrid), Spain
- Centro de Investigación Biomédica en Red de Enfermedades Infecciosas (CIBERINFEC-ISCIII), Madrid, Spain
| | - Edwin Abner
- Kacheliba Sub-County Hospital, Kacheliba, West Pokot County, Kenya
| | - Dawit Wolday
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada
| | - Henk D F H Schallig
- Amsterdam University Medical Centre, Department of Medical Microbiology and Infection Prevention, Experimental Parasitology, Amsterdam, the Netherlands
- Amsterdam Institute for Infection and Immunity, Infectious Diseases Programme, Amsterdam, the Netherlands
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14
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Freitas CS, Pereira IAG, Lage DP, Vale DL, Pimenta BL, Soares NP, Santiago SS, Martins VT, Câmara RSB, Jesus MM, Tavares GSV, Ramos FF, Ludolf F, Magalhães LND, Oliveira FM, Duarte MC, Chávez-Fumagalli MA, Costa AV, Roatt BM, Teixeira RR, Coelho EAF. New synthetic molecules incorporated into polymeric micelles used for treatment against visceral leishmaniasis. Cytokine 2024; 177:156543. [PMID: 38373365 DOI: 10.1016/j.cyto.2024.156543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/30/2024] [Accepted: 02/06/2024] [Indexed: 02/21/2024]
Abstract
Treatment against visceral leishmaniasis (VL) presents problems, mainly related to drug toxicity, high cost and/or by emergence of resistant strains. In the present study, two vanillin synthetic derivatives, 3 s [4-(2-hydroxy-3-(4-octyl-1H-1,2,3-triazol-1-yl)propoxy)-3-methoxybenzaldehyde] and 3 t [4-(3-(4-decyl-1H-1,2,3-triazol-1-yl)-2-hydroxypropoxy)-3-methoxybenzaldehyde], were evaluated as therapeutic candidates in a murine model against Leishmania infantum infection. Molecules were used pure (3 s and 3 t) or incorporated into Poloxamer 407-based micelles (3 s/M and 3 t/M) in the infected animals, which also received amphotericin B (AmpB) or Ambisome® as control. Results showed that 3 s/M and 3 t/M compositions induced a Th1-type immune response in treated animals, with higher levels of IFN-γ, IL-2, TNF-α, IL-12, nitrite, and IgG2a antibodies. Animals presented also low toxicity and significant reductions in the parasite load in their spleens, livers, bone marrows and draining lymph nodes, as compared as control groups mice, with the evaluations performed one and 30 days after the application of the therapeutics. In conclusion, preliminary data suggest that 3 s/M and 3 t/M could be considered for future studies as therapeutic agents against VL.
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Affiliation(s)
- Camila S Freitas
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Isabela A G Pereira
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Daniela P Lage
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Danniele L Vale
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Breno L Pimenta
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Nícia P Soares
- Laboratório de Imunopatologia, Núcleo de Pesquisas em Ciências Biológicas, Departamento de Ciências Biológicas, Insituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Samira S Santiago
- Grupo de Síntese e Pesquisa de Compostos Bioativos, Departamento de Química, Universidade Federal de Viçosa, Avenida PH Rolfs, S/N, 36570-900 Viçosa, Minas Gerais, Brazil
| | - Vívian T Martins
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Raquel S B Câmara
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Marcelo M Jesus
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Grasiele S V Tavares
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Fernanda F Ramos
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Fernanda Ludolf
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil; Programa de Pós-Graduação em Ciências da Saúde, Faculdade de Ciências Médicas de Minas Gerais, Belo Horizonte 30130-110, Minas Gerais, Brazil
| | - Lícia N D Magalhães
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil
| | - Fabrício M Oliveira
- Instituto Federal de Educação de Minas Gerais, Rua Afonso Sardinha, 90, Bairro Pioneiros, 36420-000 Ouro Branco, Minas Gerais, Brazil
| | - Mariana C Duarte
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil; Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Miguel A Chávez-Fumagalli
- Computational Biology and Chemistry Research Group, Vicerrectorado de Investigación, Universidad Católica de Santa María, Urb. San José S/N, Umacollo, Arequipa, Peru
| | - Adilson V Costa
- Departamento de Química e Física, Universidade Federal do Espírito Santo, Alto Universitário, s/n, Guararema, 29500-000, Alegre, Espírito Santo, Brazil
| | - Bruno M Roatt
- Laboratório de Imunopatologia, Núcleo de Pesquisas em Ciências Biológicas, Departamento de Ciências Biológicas, Insituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Róbson R Teixeira
- Grupo de Síntese e Pesquisa de Compostos Bioativos, Departamento de Química, Universidade Federal de Viçosa, Avenida PH Rolfs, S/N, 36570-900 Viçosa, Minas Gerais, Brazil
| | - Eduardo A F Coelho
- Programa de Pós-Graduação em Ciências da Saúde: Infectologia e Medicina Tropical, Faculdade de Medicina, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena, 190, Santa Efigênia, 30130-100 Belo Horizonte, Minas Gerais, Brazil; Departamento de Patologia Clínica, COLTEC, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, Minas Gerais, Brazil.
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15
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Lubas G, Paltrinieri S, Papini RA, Lensi I, Benali SL, Cortadellas O, D’Anna N, Fondati A, Roura X, Zini E. Clinical and Clinico-Pathological Observations of the Erythrocyte Sedimentation Rate in Dogs Affected by Leishmaniosis and Other Inflammatory Diseases. Animals (Basel) 2024; 14:1013. [PMID: 38612252 PMCID: PMC11011138 DOI: 10.3390/ani14071013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
The erythrocyte sedimentation rate (ESR) has been used in canine medicine in several disorders, above all, to evaluate levels of inflammation. This study evaluated the ESR in canine leishmaniosis (CanL) and other inflammatory conditions. Three groups of dogs were examined: CanL affected dogs without clinical signs (INFECTED group, #25) or with clinical signs (SICK group, #43) and dogs affected by acute or acute-on-chronic conditions (OTHER DISEASE group, #65). The ESR was compared with acute phase proteins or reactants either positive or negative (leukogram, fibrinogen, iron, unsaturated iron binding capacity, ferritin, haptoglobin, and albumin) and immunological markers (gamma-globulins, IgG, and IgM). The ESR was higher in the SICK group than in the INFECTED group (median 39 vs. 11 mm/h; p < 0.0001), as well as in the OTHER DISEASE than in the INFECTED groups (median 41 vs. 11 mm/h; p < 0.0001). The ESR appeared outside the reference range for all dogs in the SICK and OTHER DISEASE groups and almost with similar values (mm/h; median 39, 95% CI 31-51 vs. 41, 95% CI 12-87; p > 0.05). The extent of changes in ESR can help to establish the severity of CanL and other inflammatory disorders. As a point-of-care test, the ESR can be used to screen dogs for unhealthy conditions, and its values correlate with the severity of any disease, including CanL.
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Affiliation(s)
- George Lubas
- Clinica Veterinaria Colombo, VetPartners Italia, V.le Colombo 153, 55041 Lido di Camaiore, Italy;
| | - Saverio Paltrinieri
- Department of Veterinary Medicine and Animal Sciences, University of Milan, Via dell’Università 6, 26900 Lodi, Italy;
| | - Roberto Amerigo Papini
- Department of Veterinary Sciences, University of Pisa, c/o Veterinary Teaching Hospital “Mario Modenato”, Via Livornese (Lato Monte), San Piero a Grado, 56122 Pisa, Italy;
| | - Ilaria Lensi
- Clinica Veterinaria Colombo, VetPartners Italia, V.le Colombo 153, 55041 Lido di Camaiore, Italy;
| | - Silvia Lucia Benali
- MYLAV, Laboratorio La Vallonea, Via G. Sirtori, 9, Passirana di Rho, 20017 Milano, Italy;
| | - Oscar Cortadellas
- Hospital Clínico Veterinario, Universidad CEU Cardenal Herrera, 46115 Valencia, Spain;
| | - Nunzio D’Anna
- Clinica Oculistica Veterinaria SeeVet, Via Tuscolana 1709, 00133 Roma, Italy;
| | | | - Xavier Roura
- Hospital Clínic Veterinari, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain;
| | - Eric Zini
- AniCura Istituto Veterinario Novara, Strada Provinciale 9, 28060 Granozzo con Monticello, Italy;
- Department of Animal Medicine, Production and Health, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy
- Clinic for Small Animal Internal Medicine, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland
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16
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Pitt SJ, Gunn A. The One Health Concept. Br J Biomed Sci 2024; 81:12366. [PMID: 38434675 PMCID: PMC10902059 DOI: 10.3389/bjbs.2024.12366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 02/05/2024] [Indexed: 03/05/2024]
Abstract
The concept of One Health has been developed as the appreciation that human health is intricately connected to those of other animals and the environment that they inhabit. In recent years, the COVID-19 pandemic and noticeable effects of climate change have encouraged national and international cooperation to apply One Health strategies to address key issues of health and welfare. The United Nations (UN) Sustainable Development Goals have established targets for health and wellbeing, clean water and sanitation, climate action, as well as sustainability in marine and terrestrial ecosystems. The One Health Quadripartite comprises the World Health Organization (WHO), the World Organization for Animal Health (WOAH-formerly OIE), the United Nations Food and Agriculture Organization (FAO) and the United Nations Environment Programme (UNEP). There are six areas of focus which are Laboratory services, Control of zoonotic diseases, Neglected tropical diseases, Antimicrobial resistance, Food safety and Environmental health. This article discusses the concept of One Health by considering examples of infectious diseases and environmental issues under each of those six headings. Biomedical Scientists, Clinical Scientists and their colleagues working in diagnostic and research laboratories have a key role to play in applying the One Health approach to key areas of healthcare in the 21st Century.
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Affiliation(s)
- Sarah J. Pitt
- School of Applied Sciences, University of Brighton, Brighton, United Kingdom
| | - Alan Gunn
- School of Biological and Environmental Sciences, Liverpool John Moores University, Liverpool, United Kingdom
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17
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Hurtado-Morillas C, Martínez-Rodrigo A, Orden JA, de Urbina-Fuentes L, Mas A, Domínguez-Bernal G. Enhancing Control of Leishmania infantum Infection: A Multi-Epitope Nanovaccine for Durable T-Cell Immunity. Animals (Basel) 2024; 14:605. [PMID: 38396573 PMCID: PMC10886062 DOI: 10.3390/ani14040605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/02/2024] [Accepted: 02/10/2024] [Indexed: 02/25/2024] Open
Abstract
Canine leishmaniosis (CanL) is a growing health problem for which vaccination is a crucial tool for the control of disease. The successful development of an effective vaccine against this disease relies on eliciting a robust and enduring T-cell immune response involving the activation of CD4+ Th1 and CD8+ T-cells. This study aimed to evaluate the immunogenicity and prophylactic efficacy of a novel nanovaccine comprising a multi-epitope peptide, known as HisDTC, encapsulated in PLGA nanoparticles against Leishmania infantum infection in the murine model. The encapsulation strategy was designed to enhance antigen loading and sustain release, ensuring prolonged exposure to the immune system. Our results showed that mice immunized with PLGA-encapsulated HisDTC exhibited a significant reduction in the parasite load in the liver and spleen over both short and long-term duration. This reduction was associated with a cellular immune profile marked by elevated levels of pro-inflammatory cytokines, such as IFN-γ, and the generation of memory T cells. In conclusion, the current study establishes that PLGA-encapsulated HisDTC can promote effective and long-lasting T-cell responses against L. infantum in the murine model. These findings underscore the potential utility of multi-epitope vaccines, in conjunction with appropriate delivery systems, as an alternative strategy for CanL control.
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Affiliation(s)
- Clara Hurtado-Morillas
- INMIVET, Animal Health Department, School of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain; (C.H.-M.)
| | - Abel Martínez-Rodrigo
- INMIVET, Animal Science Department, School of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain
- Centro de Investigación en Sanidad Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Consejo Superior de Investigaciones Científicas (CISA-INIA-CSIC), 28130 Madrid, Spain
| | - José A. Orden
- INMIVET, Animal Health Department, School of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain; (C.H.-M.)
| | - Laura de Urbina-Fuentes
- INMIVET, Animal Health Department, School of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain; (C.H.-M.)
| | - Alicia Mas
- INMIVET, Animal Health Department, School of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain; (C.H.-M.)
| | - Gustavo Domínguez-Bernal
- INMIVET, Animal Health Department, School of Veterinary Medicine, Complutense University of Madrid, 28040 Madrid, Spain; (C.H.-M.)
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18
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Mahdavi R, Martinkovic F, Shams-Eldin H, Pereira IE, Reis AB, Latz A, Heinz D, Aira C, Fresco-Taboada A, Abass E, Romero-Olmedo J, Teixeira HC, Steinhoff U. Comparative Study of a Novel Lateral Flow Rapid Test with Conventional Serological Test Systems for the Diagnosis of Canine Leishmaniosis in Croatia and Brazil. Pathogens 2024; 13:109. [PMID: 38392847 PMCID: PMC10892489 DOI: 10.3390/pathogens13020109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/20/2023] [Accepted: 12/27/2023] [Indexed: 02/25/2024] Open
Abstract
Control of canine infections with Leishmania infantum (L. infantum), a major zoonotic disease in Brazil and southern Europe, is becoming increasingly important due to its close proximity to humans, the increasing import of dogs from endemic regions and the impact of climate change on vector spreading. Simple, rapid and reliable diagnostic tests are therefore needed to detect infected dogs. Here, we re-evaluated different serological methods for the diagnosis of canine leishmaniosis (CanL) in Croatia and Brazil. The diagnostic performance of the indirect fluorescent antibody test (IFAT) and the VetLine® Leishmania ELISA (GSD Frankfurt, Germany) was compared with three rKLi8.3-based diagnostic test systems, the rKLi8.3 ELISA (GSD Frankfurt, Germany), the INgezim® Leishma CROM (GSD Madrid, Spain) lateral flow test (LFT) and the VetBlot®Leishmania LineBlot (GSD Frankfurt, Germany). CanL symptomatic dogs were efficiently diagnosed by all tests, except the VetLine® Leishmania ELISA, which is based on whole Leishmania antigens. The advantage of rKLi8.3 was also observed in oligo- and asymptomatic dogs from Brazil and Croatia, although with reduced diagnostic efficiency compared to symptomatic dogs. Similar to IFAT and rKLi8.3 ELISA, the LFT did not cross-react with other common canine pathogens; it showed very high specificity for healthy dogs from endemic regions in both countries and did not react with healthy, vaccinated dogs in Brazil. In conclusion, serodiagnostic tests based on the rKLi8.3 antigens are superior to whole parasite antigens, and the LFT has the advantage of providing a laboratory-independent, rapid and specific diagnosis of CanL.
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Affiliation(s)
- Rouzbeh Mahdavi
- Institute of Medical Microbiology and Hospital Hygiene, Phillips University of Marburg, 35043 Marburg, Germany; (R.M.); (H.S.-E.); (J.R.-O.)
| | - Franjo Martinkovic
- Faculty of Veterinary Medicine, University of Zagreb, HR-1000 Zagreb, Croatia;
| | - Hosam Shams-Eldin
- Institute of Medical Microbiology and Hospital Hygiene, Phillips University of Marburg, 35043 Marburg, Germany; (R.M.); (H.S.-E.); (J.R.-O.)
| | - Ingrid E. Pereira
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora 36036-900, MG, Brazil (H.C.T.)
| | - Alexandre B. Reis
- School of Pharmacy, Federal University of Ouro Preto, Ouro Preto 35400-000, MG, Brazil;
| | - Andreas Latz
- Gold Standard Diagnostics Frankfurt (GSD Frankfurt), 63128 Dietzenbach, Germany; (A.L.); (D.H.)
| | - Daniela Heinz
- Gold Standard Diagnostics Frankfurt (GSD Frankfurt), 63128 Dietzenbach, Germany; (A.L.); (D.H.)
| | - Cristina Aira
- Gold Standard Diagnostics Madrid S.A. (GSD Madrid), 28037 Madrid, Spain; (C.A.); (A.F.-T.)
| | - Alba Fresco-Taboada
- Gold Standard Diagnostics Madrid S.A. (GSD Madrid), 28037 Madrid, Spain; (C.A.); (A.F.-T.)
| | - Elfadil Abass
- Department of Clinical Laboratory Science, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam 34212, Saudi Arabia;
| | - Jelena Romero-Olmedo
- Institute of Medical Microbiology and Hospital Hygiene, Phillips University of Marburg, 35043 Marburg, Germany; (R.M.); (H.S.-E.); (J.R.-O.)
| | - Henrique C. Teixeira
- Department of Parasitology, Microbiology and Immunology, Federal University of Juiz de Fora, Juiz de Fora 36036-900, MG, Brazil (H.C.T.)
| | - Ulrich Steinhoff
- Institute of Medical Microbiology and Hospital Hygiene, Phillips University of Marburg, 35043 Marburg, Germany; (R.M.); (H.S.-E.); (J.R.-O.)
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19
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Espejo E, Galante A, Tremori TM, Kmetiuk LB, Laiola MA, Biondo AW, Maiorka P. Case report: First criminal conviction of dog fighting in Brazil: an international network organization. Front Vet Sci 2024; 10:1327436. [PMID: 38260207 PMCID: PMC10800658 DOI: 10.3389/fvets.2023.1327436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 12/20/2023] [Indexed: 01/24/2024] Open
Abstract
Although banned in several countries worldwide, dog fighting has remained a challenge, particularly on criminal investigation, recognition, and prosecution. Besides animal cruelty, dog fighting has been controlled mostly by criminal organizations and accompanied by illegal gambling and drug trafficking. While such competitions may be impaired by advances of legislation on animal welfare and media coverage, international organized crime has been migrating to less regulated and enforced countries. The case herein reported a flagrant dog fighting investigation in an international event involving 27 Pitbull dogs in Mairiporã, located 50 km outside São Paulo City, Brazil. An international network of dog fighting was revealed at the tournament, along with presence of organizers from USA, Mexico, and Peru. Proof was obtained on-site about other similar past and future competitions in other Latin American countries. Dogs were rescued, thoroughly examined for signs of animal cruelty, surveyed for potential diseases, and tested positive for visceral canine leishmaniasis. The process conducted by the state hearing resulted in the highest criminal sentence attributed to animal cruelty in Brazil to date, serving as jurisprudence for future prosecutions. Forensic veterinary medicine was essential in this case as a specialty for police and court assistance, leading to detailed and undeniable report of animal cruelty.
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Affiliation(s)
- Esther Espejo
- Department of Pathology, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Alina Galante
- Department of Pathology, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Tália Missen Tremori
- Department of Pathology, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
| | - Louise Bach Kmetiuk
- Department of Veterinary MedicineFederal University of Paraná, Curitiba, Brazil
- Department of Pathobiology, Purdue University, West Lafayette, IN, United States
| | | | - Alexander Welker Biondo
- Department of Veterinary MedicineFederal University of Paraná, Curitiba, Brazil
- Department of Pathobiology, Purdue University, West Lafayette, IN, United States
| | - Paulo Maiorka
- Department of Pathology, Faculty of Veterinary Medicine and Animal Sciences, University of São Paulo, São Paulo, Brazil
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20
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de Carvalho CA, Hiramoto RM, Meireles LR, de Andrade HF. Understanding hypergammaglobulinemia in experimental or natural visceral leishmaniasis. Parasite Immunol 2024; 46:e13021. [PMID: 38275197 DOI: 10.1111/pim.13021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 12/19/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024]
Abstract
Nonspecific hypergammaglobulinemia (HGG) occurs in symptomatic human visceral leishmaniasis (VL) caused by L. L. infantum. This study assessed this finding in experimental infection in hamsters and natural infection in dogs. The serum concentration of proteins, albumin and globulins was determined through the biuret and bromocresol green reaction, where the HGG was better expressed through the albumin/globulin (A/G) ratio. HGG was associated with a higher concentration of specific anti-glycan antibodies (BSA-G)/promastigote soluble extract (PSE) and the presence of circulating immune complexes (IC) by dissociative enzyme-linked immunoassay (ELISA). The study found monovalent IC in 37.9% (PSE) and 50% (BSA-G) of sera from infected hamsters, with increased frequency as the disease progressed. HGG was found in >60% of the samples in dogs with VL, associated with higher levels of specific immunoglobulin (Ig)A and IgM, but not IgG, determined using the PSE and BSA-G ELISA. HGG was associated with the presence of monovalent IC in 58.9% (PSE) and 63.4% (BSA-G) positive dog samples. HGG may result not only from the nonspecific activation of B cells, with greater production of specific and nonspecific antibodies, but also due to lower IgG excretion due to the presence of soluble monovalent IC. HGG correlates to the progression of VL and may be a marker for manifested disease.
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Affiliation(s)
- Camila Aparecida de Carvalho
- Laboratório de Protozoologia IMTSP, Departamento de Patologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | | | - Luciana Regina Meireles
- Laboratório de Protozoologia IMTSP, Departamento de Patologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Heitor Franco de Andrade
- Laboratório de Protozoologia IMTSP, Departamento de Patologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, São Paulo, Brazil
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21
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Francesconi V, Rizzo M, Schenone S, Carbone A, Tonelli M. State-of-the-art Review on the Antiparasitic Activity of Benzimidazolebased Derivatives: Facing Malaria, Leishmaniasis, and Trypanosomiasis. Curr Med Chem 2024; 31:1955-1982. [PMID: 37718524 PMCID: PMC11071657 DOI: 10.2174/0929867331666230915093928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/19/2023] [Accepted: 08/27/2023] [Indexed: 09/19/2023]
Abstract
Protozoan parasites represent a significant risk for public health worldwide, afflicting particularly people in more vulnerable categories and cause large morbidity and heavy economic impact. Traditional drugs are limited by their toxicity, low efficacy, route of administration, and cost, reflecting their low priority in global health management. Moreover, the drug resistance phenomenon threatens the positive therapy outcome. This scenario claims the need of addressing more adequate therapies. Among the diverse strategies implemented, the medicinal chemistry efforts have also focused their attention on the benzimidazole nucleus as a promising pharmacophore for the generation of new drug candidates. Hence, the present review provides a global insight into recent progress in benzimidazole-based derivatives drug discovery against important protozoan diseases, such as malaria, leishmaniasis and trypanosomiasis. The more relevant chemical features and structure-activity relationship studies of these molecules are discussed for the purpose of paving the way towards the development of more viable drugs for the treatment of these parasitic infections.
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Affiliation(s)
- Valeria Francesconi
- Department of Pharmacy, University of Genoa, Viale Benedetto XV, 3, Genoa, 16132, Italy
| | - Marco Rizzo
- Department of Pharmacy, University of Genoa, Viale Benedetto XV, 3, Genoa, 16132, Italy
| | - Silvia Schenone
- Department of Pharmacy, University of Genoa, Viale Benedetto XV, 3, Genoa, 16132, Italy
| | - Anna Carbone
- Department of Pharmacy, University of Genoa, Viale Benedetto XV, 3, Genoa, 16132, Italy
| | - Michele Tonelli
- Department of Pharmacy, University of Genoa, Viale Benedetto XV, 3, Genoa, 16132, Italy
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22
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Amaro F, Vilares A, Martins S, Reis T, Osório HC, Alves MJ, Gargaté MJ. Co-Circulation of Leishmania Parasites and Phleboviruses in a Population of Sand Flies Collected in the South of Portugal. Trop Med Infect Dis 2023; 9:3. [PMID: 38276633 PMCID: PMC10821132 DOI: 10.3390/tropicalmed9010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
In the Old World, phlebotomine sand flies from the genus Phlebotomus are implicated in the transmission of Leishmania spp. parasites (Kinetoplastida: Trypanosomatidae) and viruses belonging to the genus Phlebovirus (Bunyavirales: Phenuiviridae). Two of the five sand fly species known to occur in Portugal, Phlebotomus perniciosus and Ph. ariasi, the former being the most ubiquitous, are recognized vectors of Leishmania infantum, which causes visceral leishmaniasis, the most prevalent form of leishmaniasis in the country. Phlebotomus perniciosus is also the vector of the neurotropic Toscana virus, which can cause aseptic meningitis. Entomological surveillance is essential to provide fundamental data about the presence of vectors and the pathogens they can carry. As such, and given the lack of data in Portugal, an entomological survey took place in the Algarve, the southernmost region of the country, from May to October 2018. Polymerase chain reaction assays were performed in order to detect the presence of the above-mentioned pathogens in sand fly pools. Not only were both Leishmania parasites and phleboviruses detected during this study, but more importantly, it was the first time their co-circulation was verified in the same sand fly population collected in Portugal.
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Affiliation(s)
- Fátima Amaro
- Centre for Vectors and Infectious Diseases Research, National Institute of Health Doutor Ricardo Jorge, No. 5, 2965-575 Águas de Moura, Portugal; (H.C.O.); (M.J.A.)
- Environment and Infectious Diseases Research Group, Environmental Health Institute, 1649-028 Lisboa, Portugal
- Centre for Animal Science Studies (CECA), University of Porto, 4050-453 Porto, Portugal
| | - Anabela Vilares
- National Reference Laboratory of Parasitic and Fungal Infections, National Institute of Health Doutor Ricardo Jorge, 1649-016 Lisboa, Portugal; (A.V.); (S.M.); (T.R.); (M.J.G.)
| | - Susana Martins
- National Reference Laboratory of Parasitic and Fungal Infections, National Institute of Health Doutor Ricardo Jorge, 1649-016 Lisboa, Portugal; (A.V.); (S.M.); (T.R.); (M.J.G.)
| | - Tânia Reis
- National Reference Laboratory of Parasitic and Fungal Infections, National Institute of Health Doutor Ricardo Jorge, 1649-016 Lisboa, Portugal; (A.V.); (S.M.); (T.R.); (M.J.G.)
| | - Hugo Costa Osório
- Centre for Vectors and Infectious Diseases Research, National Institute of Health Doutor Ricardo Jorge, No. 5, 2965-575 Águas de Moura, Portugal; (H.C.O.); (M.J.A.)
- Environment and Infectious Diseases Research Group, Environmental Health Institute, 1649-028 Lisboa, Portugal
| | - Maria João Alves
- Centre for Vectors and Infectious Diseases Research, National Institute of Health Doutor Ricardo Jorge, No. 5, 2965-575 Águas de Moura, Portugal; (H.C.O.); (M.J.A.)
- Environment and Infectious Diseases Research Group, Environmental Health Institute, 1649-028 Lisboa, Portugal
- Centre for Animal Science Studies (CECA), University of Porto, 4050-453 Porto, Portugal
| | - Maria João Gargaté
- National Reference Laboratory of Parasitic and Fungal Infections, National Institute of Health Doutor Ricardo Jorge, 1649-016 Lisboa, Portugal; (A.V.); (S.M.); (T.R.); (M.J.G.)
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23
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Montaner-Angoiti E, Llobat L. Is leishmaniasis the new emerging zoonosis in the world? Vet Res Commun 2023; 47:1777-1799. [PMID: 37438495 DOI: 10.1007/s11259-023-10171-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 07/05/2023] [Indexed: 07/14/2023]
Abstract
Leishmania is a genus of parasitic protozoa that causes a disease called leishmaniasis. Leishmaniasis is transmitted to humans through the bites of infected female sandflies. There are several different species of Leishmania that can cause various forms of the disease, and the symptoms can range from mild to severe, depending on species of Leishmania involved and the immune response of the host. Leishmania parasites have a variety of reservoirs, including humans, domestic animals, horses, rodents, wild animals, birds, and reptiles. Leishmaniasis is endemic of 90 countries, mainly in South American, East and West Africa, Mediterranean region, Indian subcontinent, and Central Asia. In recent years, cases have been detected in other countries, and it is already an infection present throughout the world. The increase in temperatures due to climate change makes it possible for sandflies to appear in countries with traditionally colder regions, and the easy movement of people and animals today, facilitate the appearance of Leishmania species in new countries. These data mean that leishmaniasis will probably become an emerging zoonosis and a public health problem in the coming years, which we must consider controlling it from a One Health point of view. This review summarizes the prevalence of Leishmania spp. around the world and the current knowledge regarding the animals that could be reservoirs of the parasite.
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Affiliation(s)
- Esperanza Montaner-Angoiti
- Molecular Mechanisms of Zoonotic Disease (MMOPS) Group, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities Valencia, Valencia, Spain
| | - Lola Llobat
- Molecular Mechanisms of Zoonotic Disease (MMOPS) Group, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities Valencia, Valencia, Spain.
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de Araújo Paz LF, da Silva A, da Silva HRF, Cavalcanti MP, de Lima VMF, da Cunha Beltrão MRO, Silva MBA, de Melo Neto OP, Medeiros ZM, dos Santos WJT. Diagnostic Potential for the Detection of Canine Visceral Leishmaniasis of an ELISA Assay Based on the Q5 Recombinant Protein: A Large-Scale and Comparative Evaluation Using Canine Sera with a Positive Diagnosis from the Dual-Path-Platform (DPP) Test. Vet Sci 2023; 10:608. [PMID: 37888560 PMCID: PMC10610690 DOI: 10.3390/vetsci10100608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/08/2023] [Accepted: 09/20/2023] [Indexed: 10/28/2023] Open
Abstract
Dogs are considered the major domestic reservoir for human visceral leishmaniasis, a serious disease caused by the Leishmania infantum parasite. Diagnosis of canine visceral leishmaniasis (CVL) is critical for disease control, with several methods currently available. Among the serological tests, the DPP rapid test and the EIE-LVC, more commonly used in Brazil, are associated with variable sensitivity and specificity. Research with novel recombinant proteins such as the ELISA with the recombinant chimeric protein Q5 may therefore improve the CVL diagnosis. This study aimed to evaluate the true diagnostic potential of Q5 in an ELISA assay using a large number of CVL-suspected sera (406) with a previous positive diagnosis based on the rapid DPP test. Sera from the DPP-positive dogs, also assessed with the EIE-LVC test, were compared with sera from healthy dogs (n = 46) and used for ELISA tests using the recombinant Q5. The resulting data as well as the correlation with the clinical signs and the environmental characteristics of the animals were analyzed using Medal and GraphPad Prism 8.0. Overall, similar levels of lower sensitivity (67-68%) were seen for both the commercial EIE-LVC test and the Q5 ELISA when all assessed sera were considered, but a much greater sensitivity (92%) was seen for those samples from symptomatic dogs only. In contrast, many negative results were observed for the DPP-positive sera from asymptomatic dogs or those with no clinical information available. A selection of those sera were tested yet again in new ELISA assays using a second batch of the recombinant Q5, purified under milder denaturing conditions, as well as using another recombinant protein (Lci13). The results reveal a higher-than-expected incidence of likely false-positive results for DPP, reinforcing the need for other recombinant proteins, such as the chimeric Q5, to be investigated as possible alternatives to the currently used CVL diagnostic methods.
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Affiliation(s)
| | | | | | | | - Valeria Marçal Felix de Lima
- Department of Clinic, Surgery and Animal Reproduction, College of Veterinary Medicine, São Paulo State University, Aracatuba 16050-680, Brazil
| | | | | | | | - Zulma Maria Medeiros
- Postgraduate Program in Health Sciences, University of Pernambuco, Recife 50100-010, Brazil
- Aggeu Magalhães Institute—Fiocruz, Recife 50740-465, Brazil
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Leite JC, Gonçalves AAM, de Oliveira DS, Resende LA, Boas DFV, Ribeiro HS, Pereira DFS, da Silva AV, Mariano RMDS, Reis PCC, Nakasone EN, França-Silva JC, Galdino AS, Paes PRDO, Melo MM, Dias ES, Chávez-Fumagalli MA, da Silveira-Lemos D, Dutra WO, Giunchetti RC. Transmission-Blocking Vaccines for Canine Visceral Leishmaniasis: New Progress and Yet New Challenges. Vaccines (Basel) 2023; 11:1565. [PMID: 37896969 PMCID: PMC10610753 DOI: 10.3390/vaccines11101565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/17/2023] [Accepted: 09/19/2023] [Indexed: 10/29/2023] Open
Abstract
Dogs with visceral leishmaniasis play a key role in the transmission cycle of Leishmania infantum to humans in the urban environment. There is a consensus regarding the importance of developing a vaccine to control this disease. Despite many efforts to develop a protective vaccine against CVL, the ones currently available, Leish-tec® and LetiFend®, have limited effectiveness. This is due, in part, to the complexity of the immune response of the naturally infected dogs against the parasite and the complexity of the parasite transmission cycle. Thus, strategies, such as the development of a transmission-blocking vaccines (TBVs) already being applied to other vector-borne diseases like malaria and dengue, would be an attractive alternative to control leishmaniasis. TBVs induce the production of antibodies in the vertebrate host, which can inhibit parasite development in the vector and/or interfere with aspects of vector biology, leading to an interruption of parasite transmission. To date, there are few TBV studies for CVL and other leishmaniasis forms. However, the few studies that exist show promising results, thus justifying the further development of this approach.
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Affiliation(s)
- Jaqueline Costa Leite
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Ana Alice Maia Gonçalves
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Diana Souza de Oliveira
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Lucilene Aparecida Resende
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Diego Fernandes Vilas Boas
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Helen Silva Ribeiro
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Diogo Fonseca Soares Pereira
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Augusto Ventura da Silva
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Reysla Maria da Silveira Mariano
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Pedro Campos Carvalhaes Reis
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Eiji Nakasone Nakasone
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - João Carlos França-Silva
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Alexsandro Sobreira Galdino
- Microorganism Biotechnology Laboratory, Federal University of São João Del-Rei (UFSJ), Midwest Campus, Divinópolis 35501-296, MG, Brazil;
| | - Paulo Ricardo de Oliveira Paes
- Department of Veterinary Clinic and Surgery, School of Veterinary, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (P.R.d.O.P.); (M.M.M.)
| | - Marília Martins Melo
- Department of Veterinary Clinic and Surgery, School of Veterinary, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (P.R.d.O.P.); (M.M.M.)
| | - Edelberto Santos Dias
- René Rachou Research Center, Oswaldo Cruz Foundation, Belo Horizonte 30190-002, MG, Brazil;
| | - Miguel Angel Chávez-Fumagalli
- Computational Biology and Chemistry Research Group, Vicerrectorado de Investigación, Universidad Católica de Santa María, Arequipa 04000, Peru;
| | - Denise da Silveira-Lemos
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Walderez Ornelas Dutra
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
| | - Rodolfo Cordeiro Giunchetti
- Laboratory of Biology of Cell Interactions, Department of Morphology, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil; (J.C.L.); (A.A.M.G.); (D.S.d.O.); (L.A.R.); (D.F.V.B.); (H.S.R.); (D.F.S.P.); (A.V.d.S.); (R.M.d.S.M.); (P.C.C.R.); (E.N.N.); (J.C.F.-S.); (D.d.S.-L.); (W.O.D.)
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Molina CC, Dias MJ, Domingues TD, Englar RE, Leal RO. Clinical findings and prognostic factors for mortality in hospitalized dogs with leishmaniosis: aretrospective study. Comp Immunol Microbiol Infect Dis 2023; 101:102041. [PMID: 37634471 DOI: 10.1016/j.cimid.2023.102041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 08/15/2023] [Accepted: 08/22/2023] [Indexed: 08/29/2023]
Abstract
This retrospective study evaluated factors responsible for mortality of dogs hospitalized for Canine Leishmaniosis. Medical records of 31 dogs with leishmaniosis from a Portuguese Veterinary Teaching Hospital were examined between August 2018 and January 2022. Females (n = 18) and pure breed dogs (n = 27) were overrepresented, with higher frequency of Labrador Retriever (n = 4). Median age was 7 years (interquartile range=7). Most had historical findings of lethargy (n = 26) and the commonest clinicopathological abnormality was hypoalbuminemia (n = 26). Eleven dogs were classified as LeishVet stage II, 10 stage III and 10 stage IV. Fourteen dogs (45.2%) died or were euthanized, with azotemia, leukocytosis, stage IV, absence of diagnosis before hospitalization and lack of leishmaniosis specific treatment during hospitalization contributing to mortality. Absence of hypoalbuminemia and stages II/III increased survival. Mean hospitalization length prior to discharge was 5.41days ( ± 1.84) and diarrhea prolonged hospital stay.
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Affiliation(s)
- Carlota Carvalho Molina
- Hospital Escolar Veterinário, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal.
| | - Maria Joana Dias
- Hospital Escolar Veterinário, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal; Centre for Interdisciplinary Research in Animal Health (CIISA) , Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal; Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, Portugal.
| | | | - Ryane E Englar
- College of Veterinary Medicine, University of Arizona, Oro Valley, USA.
| | - Rodolfo Oliveira Leal
- Hospital Escolar Veterinário, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal; Centre for Interdisciplinary Research in Animal Health (CIISA) , Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal; Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, Portugal.
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Alonso A, Alcolea PJ, Larraga J, Peris MP, Esteban A, Cortés A, Ruiz-García S, Castillo JA, Larraga V. A non-replicative antibiotic resistance-free DNA vaccine delivered by the intranasal route protects against canine leishmaniasis. Front Immunol 2023; 14:1213193. [PMID: 37790927 PMCID: PMC10543895 DOI: 10.3389/fimmu.2023.1213193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 08/11/2023] [Indexed: 10/05/2023] Open
Abstract
Leishmania infantum is the etiological agent of zoonotic visceral leishmaniasis (ZVL). The disease is endemic in Central and South America, Central and South East Asia, and the Mediterranean basin. Dogs are the main reservoir, with an estimated prevalence of approximately 2.5 million dogs in Southern Europe. Current treatments cause side effects, disease recurrence, and drug resistance. Therefore, the development of vaccines against canine leishmaniasis is necessary. We have generated a DNA vaccine based on the non-replicative antibiotic resistance marker-free plasmid vector pPAL that contains the encoding gene for the L. infantum activated protein kinase C receptor analog (LACK). Homologous pPAL-LACK prime-boost intranasal administration confers efficacious protection in Beagle dogs with a reduction of clinical signs and a statistically significant reduction of the parasite burden in the bone marrow of more than 90% of dogs after experimental infection with highly infective promastigotes. This DNA vaccine elicits a robust cellular immune response skewed towards the Th1 profile.
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Affiliation(s)
- Ana Alonso
- Laboratory of Molecular Parasitology and Vaccines, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas (CIBMS-CSIC), Madrid, Spain
| | - Pedro José Alcolea
- Laboratory of Molecular Parasitology and Vaccines, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas (CIBMS-CSIC), Madrid, Spain
| | - Jaime Larraga
- Laboratory of Molecular Parasitology and Vaccines, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas (CIBMS-CSIC), Madrid, Spain
| | - María Paz Peris
- Laboratory of Parasitology, Department of Animal Pathology, Faculty of Veterinary Science, University of Zaragoza, Zaragoza, Spain
| | - Adriana Esteban
- Laboratory of Parasitology, Department of Animal Pathology, Faculty of Veterinary Science, University of Zaragoza, Zaragoza, Spain
| | - Alberto Cortés
- Laboratory of Parasitology, Department of Animal Pathology, Faculty of Veterinary Science, University of Zaragoza, Zaragoza, Spain
| | - Silvia Ruiz-García
- Laboratory of Molecular Parasitology and Vaccines, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas (CIBMS-CSIC), Madrid, Spain
| | - Juan Antonio Castillo
- Laboratory of Parasitology, Department of Animal Pathology, Faculty of Veterinary Science, University of Zaragoza, Zaragoza, Spain
| | - Vicente Larraga
- Laboratory of Molecular Parasitology and Vaccines, Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas (CIBMS-CSIC), Madrid, Spain
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Álvarez L, Marín-García PJ, Llobat L. Genetic haplotypes associated with immune response to Leishmania infantum infection in dogs. Vet Res Commun 2023; 47:1675-1685. [PMID: 37059873 DOI: 10.1007/s11259-023-10123-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 04/10/2023] [Indexed: 04/16/2023]
Abstract
Leishmaniasis is a zoonotic parasitic disease, and the main reservoir of the parasite is the dog, although recent years have seen an increase in other mammalian species. In the Mediterranean region, where it is an endemic disease, it is caused by the species Leishmania infantum. The Ibizan hound, an autochthonous breed of this region, appears to have a genetic resistance to parasitic infection, whereas other canine breeds, such as the Boxer, are susceptible to infection. These differences are related to the differentiated activation of the immune response, with the Ibizan hound activating the Th1 immune response, whereas the Boxer breed triggers the Th2 immune response. Cytokine levels and genomic haplotypes of several genes involved in the immune response were analysed in twenty-eight Ibizan hound (resistant canine breed model) and twenty-four Boxer (susceptible canine breed) without clinical signs in the Mediterranean region. Cytokine levels were analysed by ELISA commercial kits and haplotypes were studied using CanineHD DNA Analysis BeadChip including 165,480 mapped positions. The results show 126 haplotypes associated with differential immune response in dogs. Specifically, haplotypes in IL12RB1, IL6R, CIITA, THEMIS, NOXA1, HEY2, RAB38, SLC35D2, SLC28A3, RASEF and DAPK1 genes are associated with serum levels of IFN-γ, IL-2, IL-8, and IL-18. These results suggest that the resistance or susceptibility to Leishmania infantum infection could be a consequence of haplotypes in several genes related to immune response. Future studies are needed to elucidate the relationship of these haplotypes with immune response and gene expression regulation.
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Affiliation(s)
- Luis Álvarez
- Departamento Produccion Y Sanidad Animal, Salud Publica Y Ciencia Y Tecnologia de los Alimentos, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, Valencia, Spain
| | - Pablo-Jesús Marín-García
- Departamento Produccion Y Sanidad Animal, Salud Publica Y Ciencia Y Tecnologia de los Alimentos, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, Valencia, Spain
| | - Lola Llobat
- Departamento Produccion Y Sanidad Animal, Salud Publica Y Ciencia Y Tecnologia de los Alimentos, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, Valencia, Spain.
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Baxarias M, Jornet-Rius O, Donato G, Mateu C, Alcover MM, Pennisi MG, Solano-Gallego L. Signalment, Immunological and Parasitological Status and Clinicopathological Findings of Leishmania-Seropositive Apparently Healthy Dogs. Animals (Basel) 2023; 13:ani13101649. [PMID: 37238079 DOI: 10.3390/ani13101649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/12/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023] Open
Abstract
Canine leishmaniosis caused by Leishmania infantum is a disease with a wide range of clinical manifestations. Epidemiological serosurveys performed in Europe often lack a thorough assessment of clinical health status of studied dogs. The aim of this study was to evaluate signalment, immunological and parasitological status and clinicopathological findings of L. infantum-seropositive apparently healthy dogs (n = 212) living in endemic areas. Routine laboratory tests, endpoint in-house ELISA to quantify the anti-Leishmania antibodies, blood Leishmania qPCR and IFN-γ ELISA were performed. All dogs enrolled were L. infantum-seropositive and were classified as healthy (n = 105) or sick (n = 107) according to LeishVet guidelines. The sick group presented a higher proportion of medium to high antibody levels and positive qPCR and lower IFN-γ concentration compared to the healthy group. Sick dogs were mostly classified in LeishVet stage IIa. Biochemical alterations (98%) were the most common clinicopathological findings, with fewer urinary tract (46%) and hematological (40%) alterations. Apparently healthy L. infantum-seropositive dogs can be classified between truly healthy dogs and sick dogs with clinicopathological findings. Sick dogs presented medium to high seropositivity and parasitemia and low IFN-γ concentrations, and their most common clinicopathological abnormalities were serum protein alterations followed by proteinuria and lymphopenia.
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Affiliation(s)
- Marta Baxarias
- Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Oriol Jornet-Rius
- Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Giulia Donato
- Dipartimento di Scienze Veterinarie, Università di Messina-Polo Universitario Annunziata, 98168 Messina, Italy
| | | | - Mª Magdalena Alcover
- Departament de Biologia, Sanitat i Medi Ambient, Facultat de Farmacia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Maria Grazia Pennisi
- Dipartimento di Scienze Veterinarie, Università di Messina-Polo Universitario Annunziata, 98168 Messina, Italy
| | - Laia Solano-Gallego
- Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
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Ramos RAN, Giannelli A, Fasquelle F, Scuotto A, Betbeder D. Effective immuno-therapeutic treatment of Canine Leishmaniasis. PLoS Negl Trop Dis 2023; 17:e0011360. [PMID: 37216392 PMCID: PMC10237639 DOI: 10.1371/journal.pntd.0011360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 06/02/2023] [Accepted: 05/07/2023] [Indexed: 05/24/2023] Open
Abstract
BACKGROUND Canine Leishmaniasis (CanL) caused by the L. infantum species is one of the biggest threats to the health of the South American canine population. Chemotherapeutics currently used for the treatment of CanL fail to induce a total parasite clearance while inducing numerous side effects. As CanL is an immunomodulated disease, the use of immuno-treatments should strengthen the deficient immune response of infected dogs. In this study, we evaluated a nasally administered immunotherapy in dogs naturally infected with L. infantum (stage 2), with both visceral and cutaneous manifestations. Noteworthy, some of them were also infected by other parasites (E. canis, D. immitis, A. platys), what worsen their chance of survival. METHODOLOGY/PRINCIPAL FINDINGS The treatment was based on 2 intranasal (IN.) administrations of a killed L. infantum parasite loaded into maltodextrin nanoparticles, which treatment was compared with the classical oral administration of Miltefosine (2 mg/kg) for 28 days, as well as a combination of these 2 treatments. The results showed that two IN administrations significantly reduced the serology, and were at least as efficient as the chemotherapy to reduce the skin and bone marrow parasite burden, as well as clinical scores, and that unlike Miltefosine treatments, this nasally administered nanoparticle vaccine was without side effects. CONCLUSIONS These results confirm the feasibility of a simple therapeutic immuno-treatment against L. infantum infected dogs, which is a promising tool for future developments.
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Merino Goyenechea J, Castilla Gómez de Agüero V, Palacios Alberti J, Balaña Fouce R, Martínez Valladares M. Occurrence of Leishmaniasis in Iberian Wolves in Northwestern Spain. Microorganisms 2023; 11:1179. [PMID: 37317153 DOI: 10.3390/microorganisms11051179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 06/16/2023] Open
Abstract
Canine leishmaniasis is an important vector-borne protozoan disease in dogs that is responsible for serious deterioration in their health. In the Iberian Peninsula, as in most countries surrounding the Mediterranean Sea, canine leishmaniasis is caused by Leishmania infantum (zymodeme MON-1), a digenetic trypanosomatid that harbors in the parasitophorous vacuoles of host macrophages, causing severe lesions that can lead to death if the animals do not receive adequate treatment. Canine leishmaniasis is highly prevalent in Spain, especially in the Mediterranean coastal regions (Levante, Andalusia and the Balearic Islands), where the population of domestic dogs is very high. However, the presence of this disease has been spreading to other rural and sparsely populated latitudes, and cases of leishmaniasis have been reported for years in wildlife in northwestern Spain. This work describes for the first time the presence of wolves that tested positive for leishmaniasis in the vicinity of the Sierra de la Culebra (Zamora province, northwestern Spain), a protected sanctuary of this canid species, using PCR amplification of L. infantum DNA from different non-invasive samples such as buccal mucosa and those from both ears and hair. In addition to live animals (21), samples from carcasses of mainly roadkill animals (18) were also included and analyzed using the same technique, obtaining a positivity rate of 18 of the 39 wolves sampled (46.1%) regardless of their origin.
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Affiliation(s)
- Javier Merino Goyenechea
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
- Centro del Lobo Ibérico "Félix Rodríguez de la Fuente" Robledo De Sanabria, 49393 Puebla De Sanabria, Spain
| | - Verónica Castilla Gómez de Agüero
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
- Instituto de Ganadería de Montaña, CSIC-Universidad de León, Finca Marzanas. Ctra. León-Grulleros s/n, 24346 León, Spain
| | - Jesús Palacios Alberti
- Centro del Lobo Ibérico "Félix Rodríguez de la Fuente" Robledo De Sanabria, 49393 Puebla De Sanabria, Spain
| | - Rafael Balaña Fouce
- Departamento de Ciencias Biomédicas, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - María Martínez Valladares
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
- Instituto de Ganadería de Montaña, CSIC-Universidad de León, Finca Marzanas. Ctra. León-Grulleros s/n, 24346 León, Spain
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Louzada-Flores VN, Latrofa MS, Lucente MS, Dambrós BP, Mendoza-Roldan JA, Varotto-Boccazzi I, Cattaneo GM, Späth GF, Buonavoglia A, Otranto D. Intracellular persistence of Leishmania tarentolae in primary canine macrophage cells. Acta Trop 2023; 243:106935. [PMID: 37127215 DOI: 10.1016/j.actatropica.2023.106935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/03/2023]
Abstract
Leishmania tarentolae is a non-pathogenic species first isolated from geckoes in the Mediterranean basin. The finding that dogs test positive against both Leishmania infantum and L. tarentolae raises questions regarding the ability of the latter species to persist and adapt to new hosts. This study aimed to evaluate in vitro the capability of L. tarentolae to colonize, survive and persist in canine primary monocyte-derived mononuclear cells. Monocytes were isolated from dog whole blood samples and placed in 24-well plates for differentiation into macrophages and for incubation with L. tarentolae field-isolated strains (RI-325 and SF-178) and laboratory (LEM-124) strain; the parasite burden was assessed at different time points post-infection. The L. infantum laboratory strain (MON-1) was used as control. Infection parameters were evaluated by microscopy, counting the number of amastigotes/200 infected cells, and by duplex real-time PCR from supernatants and detached cells. Similar to L. infantum, L. tarentolae strains developed into round-shaped amastigote-like forms, with higher infection rates detected at 4 h followed by an overall decrease until 48 h. RI-325 presented also a higher infection rate at 72 h. Data showed that L. tarentolae strains infect and persist inside in vitro primary canine mononuclear cells, opening new perspectives for further laboratory studies.
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Affiliation(s)
| | | | | | | | | | | | | | - Gerald F Späth
- Institut Pasteur, Université Paris Cité, INSERM U1201, Unité de Parasitologie moléculaire et Signalisation, Paris, France
| | - Alessio Buonavoglia
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Domenico Otranto
- Department of Veterinary Medicine, University of Bari, Italy; Faculty of Veterinary Sciences, Bu-Ali Sina University, Hamedan, Iran.
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Almugadam SH, Trentini A, Maritati M, Contini C, Manfrinato MC, Cervellati C, Bellini T, Hanau S. A Calcium- and GTP-Dependent Transglutaminase in Leishmania infantum. Vet Sci 2023; 10:vetsci10030234. [PMID: 36977273 PMCID: PMC10053793 DOI: 10.3390/vetsci10030234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/10/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
While human and animal leishmaniasis affect several millions of people worldwide, L. infantum is the species responsible for visceral leishmaniasis in Europe, Middle East, and America. Antileishmanial drugs present issues associated with drug toxicity and increasing parasite resistance. Therefore, the study of this parasite with a focus on new potential drug targets is extremely useful. Accordingly, we purified and characterized a transglutaminase (TGase) from L. infantum promastigotes. While Tgases are known to be involved in cell death and autophagy, it appears that these functions are very important for parasites' virulence. For the first time, we showed a Ca2+- and GTP-dependent TGase in Leishmania corresponding to a 54 kDa protein, which was purified by two chromatographic steps: DEAE-Sepharose and Heparin-Sepharose. Using polyclonal antibodies against a 50-amino-acid conserved region of the catalytic core of human TGase 2, we revealed two other bands of 66 and 75 kDa. The 54 kDa band appears to be different from the previously reported TGase, which was shown to be Ca2+- independent. Future research should address the identification of the purified enzyme sequence and, subsequently, its cloning to more comprehensively investigate its pathophysiological function and possible differences from mammal enzymes.
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Affiliation(s)
- Shawgi Hago Almugadam
- Department of Neuroscience and Rehabilitation, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
- Faculty of Medical Laboratory Sciences, University of Khartoum, Nile Avenue, P.O. Box 321, Khartoum 51111, Sudan
| | - Alessandro Trentini
- Department of Environmental and Prevention Sciences, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Martina Maritati
- Infectious Diseases and Dermatology, Department of Medical Sciences, University of Ferrara, Via Aldo Moro 8, 44124 Ferrara, Italy
| | - Carlo Contini
- Infectious Diseases and Dermatology, Department of Medical Sciences, University of Ferrara, Via Aldo Moro 8, 44124 Ferrara, Italy
| | - Maria Cristina Manfrinato
- Department of Neuroscience and Rehabilitation, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Carlo Cervellati
- Department of Translational Medicine and for Romagna, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Tiziana Bellini
- Department of Neuroscience and Rehabilitation, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Stefania Hanau
- Department of Neuroscience and Rehabilitation, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
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Interleukin 6 and interferon gamma haplotypes are related to cytokine serum levels in dogs in an endemic Leishmania infantum region. Infect Dis Poverty 2023; 12:9. [PMID: 36759910 PMCID: PMC9911338 DOI: 10.1186/s40249-023-01058-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/26/2023] [Indexed: 02/11/2023] Open
Abstract
BACKGROUND The Ibizan Hound is a canine breed native to the Mediterranean region, where leishmaniasis is an endemic zoonosis. Several studies indicate a low prevalence of this disease in Ibizan Hound dogs, whereas other canine breeds present a high prevalence. However, the underlying molecular mechanisms still remain unknown. The aim of this work is to analyse the relationship between serum levels of cytokines and the genomic profiles in two canine breeds, Ibizan Hound (resistant canine breed model) and Boxer (susceptible canine breed model). METHODS In this study, we analyse the haplotypes of genes encoding cytokines related to immune response of Leishmania infantum infection in twenty-four Boxers and twenty-eight Ibizan Hounds apparently healthy using CanineHD DNA Analysis BeadChip including 165,480 mapped positions. The haplo.glm extension of haplo.score was used to perform a General Linear Model (GLM) regression to estimate the magnitude of individual haplotype effects within each cytokine. RESULTS Mean levels of interferon gamma (IFN-γ), interleukin 2 (IL-2) and IL-18 in Boxer dogs were 0.19 ± 0.05 ng/ml, 46.70 ± 4.54 ng/ml, and 36.37 ± 30.59 pg/ml, whereas Ibizan Hound dogs present 0.49 ± 0.05 ng/ml, 64.55 ± 4.54 ng/ml, and 492.10 ± 31.18 pg/ml, respectively. The GLM regression shows fifteen haplotypes with statistically significant effect on the cytokine serum levels (P < 0.05). The more relevant are IL6-CGAAG and IFNG-GCA haplotypes, which increase and decrease the IL-2, IL-8 and IFN-γ serum levels, respectively. CONCLUSIONS Haplotypes in the IFNG and IL6 genes have been correlated to serum levels of IFN-γ, IL-2 and IL-18, and a moderate effect has been found on IL8 haplotype correlated to IL-8 and IL-18 serum levels. The results indicate that the resistance to L. infantum infection could be a consequence of certain haplotypes with a high frequency in the Ibizan Hound dog breed, while susceptibility to the disease would be related to other specific haplotypes, with high frequency in Boxer. Future studies are needed to elucidate whether these differences and haplotypes are related to different phenotypes in immune response and expression gene regulation to L. infantum infections in dogs and their possible application in new treatments and vaccines.
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Olías-Molero AI, Botías P, Cuquerella M, García-Cantalejo J, Barcia E, Torrado S, Torrado JJ, Alunda JM. Effect of Clindamycin on Intestinal Microbiome and Miltefosine Pharmacology in Hamsters Infected with Leishmania infantum. Antibiotics (Basel) 2023; 12:362. [PMID: 36830274 PMCID: PMC9952363 DOI: 10.3390/antibiotics12020362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/02/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
Visceral leishmaniasis (VL), a vector-borne parasitic disease caused by Leishmania donovani and L. infantum (Kinetoplastida), affects humans and dogs, being fatal unless treated. Miltefosine (MIL) is the only oral medication for VL and is considered a first choice drug when resistance to antimonials is present. Comorbidity and comedication are common in many affected patients but the relationship between microbiome composition, drugs administered and their pharmacology is still unknown. To explore the effect of clindamycin on the intestinal microbiome and the availability and distribution of MIL in target organs, Syrian hamsters (120-140 g) were inoculated with L. infantum (108 promastigotes/animal). Infection was maintained for 16 weeks, and the animals were treated with MIL (7 days, 5 mg/kg/day), clindamycin (1 mg/kg, single dose) + MIL (7 days, 5 mg/kg/day) or kept untreated. Infection was monitored by ELISA and fecal samples (16 wpi, 18 wpi, end point) were analyzed to determine the 16S metagenomic composition (OTUs) of the microbiome. MIL levels were determined by LC-MS/MS in plasma (24 h after the last treatment; end point) and target organs (spleen, liver) (end point). MIL did not significantly affect the composition of intestinal microbiome, but clindamycin provoked a transient albeit significant modification of the relative abundance of 45% of the genera, including Ruminococcaceae UCG-014, Ruminococcus 2; Bacteroides and (Eubacterium) ruminantium group, besides its effect on less abundant phyla and families. Intestinal dysbiosis in the antibiotic-treated animals was associated with significantly lower levels of MIL in plasma, though not in target organs at the end of the experiment. No clear relationship between microbiome composition (OTUs) and pharmacological parameters was found.
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Affiliation(s)
- Ana Isabel Olías-Molero
- ICPVet, Department of Animal Health, School of Veterinary Sciences, Complutense University of Madrid, 28040 Madrid, Spain
| | - Pedro Botías
- Genomics Unit, Research Assistance Center of Biological Techniques, Complutense University of Madrid, 28040 Madrid, Spain
| | - Montserrat Cuquerella
- ICPVet, Department of Animal Health, School of Veterinary Sciences, Complutense University of Madrid, 28040 Madrid, Spain
| | - Jesús García-Cantalejo
- Genomics Unit, Research Assistance Center of Biological Techniques, Complutense University of Madrid, 28040 Madrid, Spain
| | - Emilia Barcia
- Department of Pharmaceutics and Food Technology, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
- Institute of Industrial Pharmacy UCM, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Susana Torrado
- Department of Pharmaceutics and Food Technology, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
- Institute of Industrial Pharmacy UCM, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Juan José Torrado
- Department of Pharmaceutics and Food Technology, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
- Institute of Industrial Pharmacy UCM, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - José María Alunda
- ICPVet, Department of Animal Health, School of Veterinary Sciences, Complutense University of Madrid, 28040 Madrid, Spain
- Institute of Industrial Pharmacy UCM, School of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
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