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Troncoso ME, Germanó MJ, Arrieta VJ, García Bustos MF, Cifuente D, Cargnelutti DE, Lozano ES. Antiparasitic Activity of Two Natural Terpenes from Salvia cuspidata against Leishmania amazonensis. J Nat Prod 2023; 86:797-803. [PMID: 36857574 DOI: 10.1021/acs.jnatprod.2c00976] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Leishmaniasis is a neglected disease caused by flagellated parasites of the Leishmania genus affecting more than 10 million people worldwide. Current treatments for leishmaniasis involve the administration of poorly tolerated drugs with toxic side effects in patients. There is an imperative necessity for novel compounds to treat this disease. One of the most used strategies in the search for different antiparasitic compounds is the screening of purified plant molecules. The diterpenes 12-hydroxy-11,14-diketo-6,8,12-abietatrien-19,20-olide (HABTO) and 5-epi-icetexone (ICTX) isolated from Salvia cuspidata were shown to be effective against Leishmania amazonensis in vitro and in vivo. They displayed an antiproliferative effect against L. amazonensis promastigotes. They also induce an increase in ROS levels and affect the mitochondrial activity of parasites. HABTO and ICTX in an in vivo model of cutaneous leishmaniasis decrease footpad swelling, parasite load, and splenic index. Moreover, they induce significant reduction in the O.D. of total anti-Leishmania IgG and IgG1 subtype antibody responses against L. amazonensis compared to the PBS group but maintain high levels of IgG2a. This suggests that in HABTO- or ICTX-treated mice, there is a slowdown in the progression of the disease. These terpenes could be considered as possible novel antileishmanial agents against L. amazonensis and thus treat cutaneous leishmaniasis.
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Affiliation(s)
- Mariana Elizabeth Troncoso
- Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Medicina y Biología Experimental de Cuyo, Mendoza, 5500, Argentina
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Mendoza, M5502, Argentina
- Facultad de Ciencias Médicas, Universidad de Mendoza, Mendoza, M5502BZG, Argentina
| | - María José Germanó
- Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Medicina y Biología Experimental de Cuyo, Mendoza, 5500, Argentina
| | - Victoria J Arrieta
- Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Medicina y Biología Experimental de Cuyo, Mendoza, 5500, Argentina
| | - María Fernanda García Bustos
- Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Patología Experimental, Salta, A4408FVY, Argentina
| | - Diego Cifuente
- Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Investigación en Tecnología Química, San Luis, 78216, Argentina
| | - Diego E Cargnelutti
- Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Medicina y Biología Experimental de Cuyo, Mendoza, 5500, Argentina
- Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza, M5502, Argentina
| | - Esteban S Lozano
- Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Medicina y Biología Experimental de Cuyo, Mendoza, 5500, Argentina
- Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza, M5502, Argentina
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Sanchez MV, Eliçabe RJ, Di Genaro MS, Germanó MJ, Gea S, García Bustos MF, Salomón MC, Scodeller EA, Cargnelutti DE. Total Leishmania antigens with Poly(I:C) induce Th1 protective response. Parasite Immunol 2017; 39. [PMID: 28901553 DOI: 10.1111/pim.12491] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 09/06/2017] [Indexed: 01/08/2023]
Abstract
Our proposal was to develop a vaccine based on total Leishmania antigens (TLA) adjuvanted with polyinosinic-polycytidylic acid [Poly(I:C)] able to induce a Th1 response which can provide protection against Leishmania infection. Mice were vaccinated with two doses of TLA-Poly(I:C) administered by subcutaneous route at 3-week interval. Humoral and cellular immune responses induced by the immunization were measured. The protective efficacy of the vaccine was evaluated by challenging mice with infective promastigotes of Leishmania (Leishmania) amazonensis into the footpad. Mice vaccinated with TLA-Poly(I:C) showed a high anti-Leishmania IgG titre, as well as increased IgG1 and IgG2a subclass titres compared with mice vaccinated with the TLA alone. The high IgG2a indicated a Th1 bias response induced by the TLA-Poly(I:C) immunization. Accordingly, the cellular immune response elicited by the formulation was characterized by an increased production of IFN-γ and no significant production of IL-4. The TLA-Poly(I:C) immunization elicited good protection, which was associated with decreased footpad swelling, a lower parasite load and a reduced histopathological alteration in the footpad. Our findings demonstrate a promising vaccine against cutaneous leishmaniasis that is relatively economic and easy to develop and which should be taken into account for preventing leishmaniasis in developing countries.
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Affiliation(s)
- M V Sanchez
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), Centro Científico y Tecnológico de Mendoza (CCT-Mendoza), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mendoza, Argentina
| | - R J Eliçabe
- Instituto Multidisciplinario de Investigaciones Biológicas San Luis (IMIBIO-SL), Centro Científico y Tecnológico de San Luis (CCT-San Luis), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de San Luis, San Luis, Argentina
| | - M S Di Genaro
- Instituto Multidisciplinario de Investigaciones Biológicas San Luis (IMIBIO-SL), Centro Científico y Tecnológico de San Luis (CCT-San Luis), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ciudad de San Luis, San Luis, Argentina
| | - M J Germanó
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), Centro Científico y Tecnológico de Mendoza (CCT-Mendoza), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mendoza, Argentina
| | - S Gea
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Centro Científico y Tecnológico de Córdoba (CCT-Córdoba), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Córdoba, Argentina
| | - M F García Bustos
- Instituto de Patología Experimental (IPE), Centro Científico y Tecnológico de Salta (CCT-Salta), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Salta, Argentina
| | - M C Salomón
- Area de Parasitología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo (UNCuyo), UNCUYO Centro Universitario (M5502JMA), Mendoza, Argentina
| | - E A Scodeller
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), Centro Científico y Tecnológico de Mendoza (CCT-Mendoza), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mendoza, Argentina
| | - D E Cargnelutti
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU), Centro Científico y Tecnológico de Mendoza (CCT-Mendoza), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Mendoza, Argentina.,Area de Parasitología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo (UNCuyo), UNCUYO Centro Universitario (M5502JMA), Mendoza, Argentina
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Cargnelutti DE, Sanchez MAV, Alvarez P, Boado L, Mattion N, Scodeller EA. Enhancement of Th1 immune responses to recombinant influenza nucleoprotein by Ribi adjuvant. New Microbiol 2013; 36:145-151. [PMID: 23686120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 02/15/2013] [Indexed: 06/02/2023]
Abstract
A broad coverage influenza vaccine against multiple viral strains based on the viral nucleoprotein (NP) is a goal pursued by many laboratories. If the goal is to formulate the vaccine with recombinant NP it is essential to count on adjuvants capable of inducing cellular immunity. This work have studied the effect of the monophosphoryl lipid A and trehalose dimycolate, known as the Ribi Adjuvant System (RAS), in the immune response induced in mice immunized with recombinant NP. The NP was formulated with RAS and used to immunize BALB/c mice. Immunizations with NP-RAS increased the humoral and cellular immune responses compared to unadjuvanted NP. The predominant antibody isotype was IgG2a, suggesting the development of a Th1 response. Analysis of the cytokines from mice immunized with NP-RAS showed a significant increase in the production of IFN-g and a decreased production of IL-10 and IL-4 compared to controls without RAS. These results are similar to those usually obtained using Freund’s adjuvant, known to induce Th1 and CTL responses when co-administered with purified proteins, and suggest that a similar approach may be possible to enhance the performance of a T-cell vaccine containing NP.
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Affiliation(s)
- Diego E Cargnelutti
- Institute of Experimental Medicine and Biology of Cuyo (IMBECU) CCT-Mendoza-CONICET, Mendoza, Argentina.
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Cargnelutti DE, Salomón MC. [Human diphyllobothriosis. A case in non-endemic area of Argentina]. Medicina (B Aires) 2012; 72:40-42. [PMID: 22257456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Diphyllobothriosis is an intestinal parasitosis caused by cestodes infection of the genus Diphyllobothrium. In Argentina, the Andean Patagonia is considered an endemic area for this parasitosis. Diphyllobothrium latum infection has not been previously reported in the province of Mendoza, Argentina. We are now reporting then the first case. Diphyllobothriosis was confirmed by examination of morphologic characteristics of the eggs eliminated in the patients' feces. These results suggest the requirement of a more specific training of health workers in the diagnosis and treatment of non endemic parasitosis. We want to emphasize the need of health workers' education on diagnosis and treatment of endemic and non-endemic parasitosis.
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Affiliation(s)
- Diego E Cargnelutti
- Area de Parasitología, Departamento de Patología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo.
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Lacoste MG, Cargnelutti DE, Tamashiro H, Di Genaro MS. Reactive arthritis with conjunctivitis, urethritis and diarrhea in a child: immunological study of potential bacterial trigger. Clin Exp Rheumatol 2008; 26:381-382. [PMID: 18565268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
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Di Genaro MS, Cargnelutti DE, Castro DO, Eliçabe RJ, Gutiérrez JV, Correa SG, de Guzmán AMS. Yersinia-triggered arthritis in IL-12p40-deficient mice: relevant antigens and local expression of Toll-like receptor mRNA. Scand J Rheumatol 2007; 36:28-35. [PMID: 17454932 DOI: 10.1080/03009740600906651] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVES To study the role of IL-12p40 at the onset of reactive arthritis (ReA) after Yersinia enterocolitica O:3 infection, and analyse relevant microbial antigens and articular expression of Toll-like receptor (TLR) mRNA. METHODS Wild-type C57BL/6 and IL-12p40-deficient (IL-12p40-/-) mice were orogastrically infected with Y. enterocolitica O:3. Early (day 3) and late (day 21) after infection, the number of bacteria were determined in Peyer's patches (PP), mesenteric lymph nodes (MLN), the spleen, and joints. Histological studies of joints were performed. Collagen-specific and anti-Yersinia antibodies were measured by enzyme-linked immunosorbent assay (ELISA). The presence of Yersinia antigens was studied by dot blot. Induction of articular mRNA of TLR2, TLR4, and tumour necrosis factor (TNF)-alpha was analysed by reverse transcription-polymerase chain reaction (RT-PCR). TNFalpha protein levels were measured by ELISA. RESULTS At day 3, bacterial recovery in PP, MLN, and spleen was significantly increased in IL-12p40-/- mice. Histopathological changes were observed in IL-12p40-/- mice at day 21 after infection, and correlated with higher antibody response against type II collagen. Although live bacteria could not be isolated at day 21 after infection, articular microbial components, especially from the outer membrane (OM), were detected. Moreover, intra-articular immunoglobulins to Yersinia antigens were significantly higher in IL-12p40-/- mice. Furthermore, mRNA levels for TLR2, TLR4 and TNFalpha, and TNFalpha protein were increased in joints from IL-12p40-/- mice. CONCLUSIONS We concluded that IL-12p40 influences the resistance against Yersinia-triggered ReA. Bacterial products such as Yersinia OM could contribute to the ReA by induction of articular TLR expression, which results in an inflammatory response in the joint.
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Affiliation(s)
- M S Di Genaro
- Laboratory of Microbiology, Faculty of Chemistry, Biochemistry and Pharmacy, National University of San Luis, 5700 San Luis, Argentina.
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Di Genaro MS, Cargnelutti DE, Eliçabe JR, Lacoste MG, Valdez S, Gómez N, de Guzmán AMS. Role of TNFRp55 in Yersinia enterocolitica O:3-induced arthritis: triggering bacterial antigens and articular immune response. Rheumatology (Oxford) 2006; 46:590-6. [PMID: 17043042 DOI: 10.1093/rheumatology/kel348] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVES The pathogenesis of reactive arthritis (ReA), an aseptic synovitis that follows an extra-articular infection, is incompletely known. We studied the impact of tumour necrosis factor receptor (TNFR) p55 deficiency on the progression to ReA after oral Yersinia enterocolitica O:3 infection, the Yersinia antigens triggering articular inflammation and a possible articular TNFRp55-mediated mechanism that protects against ReA. METHODS Wild-type C57BL/6 and TNFRp55-/- mice were orogastrically infected with Y. enterocolitica O:3 and monitored for survival and arthritis development. The bacterial load was determined in mesenteric lymph nodes (MLNs), the spleen and joints. Interferon (IFN)-gamma, TNF-alpha and IL-10 mRNA expression in MLN and joints were analysed by reverse transcription-polymerase chain reaction (RT-PCR). Articular antibodies to Yersinia antigens, TNF-alpha protein and nitric oxide (NO) levels were assessed. Acute arthritis was evaluated after joint injection of Yersinia antigens. RESULTS The survival rate was 60% in TNFRp55-/- mice. They showed impaired bacterial clearance in MLN, the spleen and joints, and excessive mRNA expression of pro-inflammatory cytokines in MLN. Clinical and histological examinations revealed that TNFRp55-/- mice developed severe arthritis. Moreover, augmented articular outer membrane protein (OMP)-specific antibodies and TNF-alpha but impaired NO levels were detected in TNFRp55-/- mice. Synovial inflammatory response was detected by joint OMP injection. CONCLUSIONS TNFRp55-mediated immune mechanisms prevent ReA development after oral infection with Y. enterocolitica O:3. Yersinia OMPs are the relevant antigens triggering ReA. NO induction through TNFRp55 signalling could have a local antibacterial function to prevent ReA. This study could contribute to ReA-specific therapeutic studies.
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MESH Headings
- Animals
- Antibodies, Bacterial/biosynthesis
- Antigens, Bacterial/immunology
- Arthritis, Experimental/immunology
- Arthritis, Experimental/microbiology
- Arthritis, Experimental/pathology
- Arthritis, Reactive/immunology
- Arthritis, Reactive/microbiology
- Arthritis, Reactive/pathology
- Disease Susceptibility
- Joints/immunology
- Mice
- Mice, Inbred C57BL
- Nitric Oxide/biosynthesis
- Receptors, Tumor Necrosis Factor, Type I/deficiency
- Receptors, Tumor Necrosis Factor, Type I/immunology
- Tumor Necrosis Factor-alpha/biosynthesis
- Yersinia Infections/immunology
- Yersinia Infections/pathology
- Yersinia enterocolitica/immunology
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Affiliation(s)
- M S Di Genaro
- Laboratory of Microbiology and Immunology, Faculty of Chemistry, Biochemistry and Pharmacy, National University of San Luis, 5700, San Luis, Argentina.
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