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Fathima PA, Shah HK, Sivalaxmi B, Haritha HA, Ajithlal PM, Aiswarya RS, Saini P. Genetic diversity of Leishmania donovani causing visceral and cutaneous leishmaniasis in the Western Ghats, India. Gene 2024; 928:148803. [PMID: 39074644 DOI: 10.1016/j.gene.2024.148803] [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: 05/13/2024] [Revised: 07/07/2024] [Accepted: 07/26/2024] [Indexed: 07/31/2024]
Abstract
The visceral and atypical cutaneous leishmaniasis (VL and CL) caused by Leishmania donovani is an emerging infectious disease in the Western Ghats, Kerala, India. In this study, L. donovani specific kinetoplast minicircle DNA (k-DNA) sequence analysis was conducted to ascertain the genetic variability among the L. donovani isolates from the Western Ghats. Out of 23 CL and 5 VL suspected patient samples, 18 CL and 3 VL tested positive for k-DNA diagnostic PCR. Subsequently, 17 CL and 3 VL samples were found positive for L. donovani specific k-DNA PCR. Although the genetic diversity among the VL and CL isolates was low, there was clear variation from the parasites reported from other countries. The parasites characterized from the current study were more related to those reported from East Africa and India.
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Affiliation(s)
- P A Fathima
- Indian Council of Medical Research- Vector Control Research Centre (Field Station), Kottayam, Kerala, India
| | - Harish Kumar Shah
- Indian Council of Medical Research- Vector Control Research Centre (Field Station), Kottayam, Kerala, India
| | - B Sivalaxmi
- Indian Council of Medical Research- Vector Control Research Centre (Field Station), Kottayam, Kerala, India
| | - H A Haritha
- Indian Council of Medical Research- Vector Control Research Centre (Field Station), Kottayam, Kerala, India
| | - P M Ajithlal
- Indian Council of Medical Research- Vector Control Research Centre (Field Station), Kottayam, Kerala, India
| | - R S Aiswarya
- Indian Council of Medical Research- Vector Control Research Centre (Field Station), Kottayam, Kerala, India
| | - Prasanta Saini
- Indian Council of Medical Research- Vector Control Research Centre (Field Station), Kottayam, Kerala, India.
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Castro RBD, Leopoldino LS, Badaró de Moraes JV, Bressan GC, de Souza Vasconcellos R, Favarato ES, Voorwald FA, Fietto JLR. Development and preliminary study of the rLiNTPDase2 rapid test: A lateral flow immunochromatographic assay for Canine Visceral Leishmaniasis. Vet Parasitol 2024; 331:110299. [PMID: 39232468 DOI: 10.1016/j.vetpar.2024.110299] [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: 05/29/2024] [Revised: 08/28/2024] [Accepted: 08/28/2024] [Indexed: 09/06/2024]
Abstract
Canine Visceral Leishmaniasis (CVL) is the most fatal form of Leishmania infection in dogs and is caused by L. infantum in the Americas. This parasite follows a zoonotic life cycle, raising concerns within domestic households, where dogs act as the primary reservoir of the parasite. Accurately detecting infected dogs is vital for effective epidemiological control in both canine and human populations. However, existing diagnostic methods in Brazil have limitations, particularly in detecting asymptomatic and oligosymptomatic dogs, leading to ineffective disease control. To address this challenge, we evaluated a novel recombinant antigen from L. infantum, the rLiNTPDase2. Previous studies have confirmed its high performance via ELISA, leading us to assess its suitability for a Lateral Flow Immunochromatographic Assay (LFIA), which is ideal for point-of-care testing. Standardization of the assay involved testing two nitrocellulose membranes (HF135 and HF120, Millipore), three blocking protocols, and five sample dilutions (1:10, 1:20, 1:40, 1:80, and 1:160). Following the chosen conditions (HF120 membrane, 1-minute blocking protocol, and 1:80 sample dilution), we validated our assay with a sample size of 78 dogs, comprising 32 negatives and 46 positives, including symptomatic (n=23), oligosymptomatic (n=17), and asymptomatic (n=6) cases. The results revealed a sensitivity of 86.9 %, specificity of 62.5 %, and accuracy of 76.9 %, which is consistent with ELISA performance for the same samples. Compared to DPP-LVC, our assay demonstrated promising results in detecting asymptomatic and oligosymptomatic cases. This study underscores the suitability of the rLiNTPDase2 antigen for the LFIA format, suggesting its potential as a novel point-of-care diagnostic test for CVL.
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Affiliation(s)
- Raissa Barbosa de Castro
- Department of Biochemistry and Molecular Biology, Universidade Federal de Viçosa, Av. P. H. Rolfs, s/n, Campus Universitário, Viçosa, MG CEP: 36570-000, Brazil
| | - Luma Salgado Leopoldino
- Department of Biochemistry and Molecular Biology, Universidade Federal de Viçosa, Av. P. H. Rolfs, s/n, Campus Universitário, Viçosa, MG CEP: 36570-000, Brazil
| | - João Victor Badaró de Moraes
- Department of General Biology, Universidade Federal de Viçosa, Av. P. H. Rolfs, s/n, Campus Universitário, Viçosa, MG CEP: 36570-000, Brazil
| | - Gustavo Costa Bressan
- Department of Biochemistry and Molecular Biology, Universidade Federal de Viçosa, Av. P. H. Rolfs, s/n, Campus Universitário, Viçosa, MG CEP: 36570-000, Brazil
| | - Raphael de Souza Vasconcellos
- Department of Biochemistry and Molecular Biology, Universidade Federal de Viçosa, Av. P. H. Rolfs, s/n, Campus Universitário, Viçosa, MG CEP: 36570-000, Brazil
| | - Evandro Silva Favarato
- Department of Veterinary, Universidade Federal de Viçosa, Av. P. H. Rolfs, s/n, Campus Universitário, Viçosa, MG CEP: 36570-000, Brazil
| | - Fabiana Azevedo Voorwald
- Department of Veterinary, Universidade Federal de Viçosa, Av. P. H. Rolfs, s/n, Campus Universitário, Viçosa, MG CEP: 36570-000, Brazil
| | - Juliana Lopes Rangel Fietto
- Department of Biochemistry and Molecular Biology, Universidade Federal de Viçosa, Av. P. H. Rolfs, s/n, Campus Universitário, Viçosa, MG CEP: 36570-000, Brazil.
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Bogdan C, Islam NAK, Barinberg D, Soulat D, Schleicher U, Rai B. The immunomicrotope of Leishmania control and persistence. Trends Parasitol 2024; 40:788-804. [PMID: 39174373 DOI: 10.1016/j.pt.2024.07.013] [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: 06/20/2024] [Revised: 07/21/2024] [Accepted: 07/22/2024] [Indexed: 08/24/2024]
Abstract
Leishmania is an intracellular protozoan transmitted by sand fly vectors; it causes cutaneous, mucocutaneous, or visceral disease. Its growth and survival are impeded by type 1 T helper cell responses, which entail interferon (IFN)-γ-mediated macrophage activation. Leishmania partially escapes this host defense by triggering immune cell and cytokine responses that favor parasite replication rather than killing. Novel methods for in situ analyses have revealed that the pathways of immune control and microbial evasion are strongly influenced by the tissue context, the micro milieu factors, and the metabolism at the site of infection, which we collectively term the 'immunomicrotope'. Understanding the components and the impact of the immunomicrotope will enable the development of novel strategies for the treatment of chronic leishmaniasis.
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Affiliation(s)
- Christian Bogdan
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Wasserturmstraße 3/5, D-91054 Erlangen, Germany; FAU Profile Center Immunomedicine, FAU Erlangen-Nürnberg, Schlossplatz 1, D-91054 Erlangen, Germany.
| | - Noor-A-Kasida Islam
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Wasserturmstraße 3/5, D-91054 Erlangen, Germany
| | - David Barinberg
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Wasserturmstraße 3/5, D-91054 Erlangen, Germany
| | - Didier Soulat
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Wasserturmstraße 3/5, D-91054 Erlangen, Germany; FAU Profile Center Immunomedicine, FAU Erlangen-Nürnberg, Schlossplatz 1, D-91054 Erlangen, Germany
| | - Ulrike Schleicher
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Wasserturmstraße 3/5, D-91054 Erlangen, Germany; FAU Profile Center Immunomedicine, FAU Erlangen-Nürnberg, Schlossplatz 1, D-91054 Erlangen, Germany
| | - Baplu Rai
- Mikrobiologisches Institut - Klinische Mikrobiologie, Immunologie und Hygiene, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg, Wasserturmstraße 3/5, D-91054 Erlangen, Germany
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Lima CM, Bourquia M, Zahri A, Haissen N, Santarém N, Cardoso L, Cordeiro da Silva A. Veterinary perspectives on the urbanization of leishmaniosis in Morocco. Parasit Vectors 2024; 17:348. [PMID: 39160608 PMCID: PMC11334585 DOI: 10.1186/s13071-024-06411-5] [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: 04/15/2024] [Accepted: 07/17/2024] [Indexed: 08/21/2024] Open
Abstract
BACKGROUND Leishmaniosis caused by Leishmania infantum, L. major and L. tropica is endemic in Morocco. Growing evidence of both human and canine Leishmania infections in urban centres has been reported. Since many forms of the disease are zoonotic, veterinarians play an important role in leishmaniosis control by intervening at the parasite host level. This study aimed to bring together One Health principles to connect canine and feline leishmaniosis epidemiology within urban centres of Morocco (Rabat and Fez) and assess the level of awareness of Moroccan veterinarians about facing this threat. METHODS A molecular survey was conducted for Leishmania DNA detection in canine (n = 155) and feline (n = 32) whole-blood samples. Three conventional polymerase chain reaction (PCR) protocols were implemented. The first PCR aimed at identifying infected animals by targeting Leishmania spp. kinetoplast minicircle DNA (kDNA). The second and third PCR targeted the Leishmania internal transcribed spacer region (ITS-1) and the Leishmania small subunit ribosomal RNA (SSUrRNA) gene, respectively, aiming at identification of the infecting species after Sanger sequencing-positive amplicons. Total immunoglobulin G (IgG) against Leishmania spp. was evaluated in 125 dogs by enzyme-linked immunosorbent assays (ELISA) using an in-house protocol, including three Leishmania-specific antigens (SPLA, rKDDR and LicTXNPx). Sera from 25 cats were screened for total IgG to Leishmania spp. by an indirect immunofluorescence antibody test (IFAT). An online questionnaire was presented to Moroccan veterinarians addressing their knowledge and practices towards animal leishmaniosis. RESULTS Overall, 19.4% of the dogs tested positive for Leishmania kDNA and ITS-1 and sequencing revealed infection with L. infantum among PCR-positive dogs. These animals presented a wide range of ELISA seropositivity results (16.7%, 34.9% and 51.6%) according to the tested antigens (rKDDR, SPLA and LicTXNPx, respectively). Use of kDNA-PCR revealed 12.5% cats positive to Leishmania spp. otherwise found to be seronegative by IFAT. CONCLUSIONS A considerable prevalence of infection was identified in dogs from urban centres of Morocco. Additionally, this is the first report of feline infection with Leishmania spp. in this country and in urban settings. Moroccan veterinarians are aware that animal leishmaniosis is endemic in Morocco, representing a public health threat, and are knowledgeable about canine leishmaniosis diagnosis and treatment.
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Affiliation(s)
- Clara M Lima
- Host-Parasite Interaction Group, i3S, Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
- Microbiology Laboratory, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Maria Bourquia
- Unité de Parasitologie et Maladies Parasitaires, Département de Pathologie et Santé Publique Vétérinaires, Institut Agronomique et Vétérinaire Hassan II, Rabat, Morocco
| | - Abderrahmane Zahri
- Unité de Parasitologie et Maladies Parasitaires, Département de Pathologie et Santé Publique Vétérinaires, Institut Agronomique et Vétérinaire Hassan II, Rabat, Morocco
| | - Nada Haissen
- Unité de Parasitologie et Maladies Parasitaires, Département de Pathologie et Santé Publique Vétérinaires, Institut Agronomique et Vétérinaire Hassan II, Rabat, Morocco
| | - Nuno Santarém
- Host-Parasite Interaction Group, i3S, Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
- Microbiology Laboratory, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Luís Cardoso
- Department of Veterinary Sciences, and Animal and Veterinary Research Centre (CECAV), University of Trás-os-Montes e Alto Douro, Vila Real, Portugal.
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Vila Real, Portugal.
| | - Anabela Cordeiro da Silva
- Host-Parasite Interaction Group, i3S, Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
- Microbiology Laboratory, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
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Registre C, Silva LM, Registre F, Soares RDDOA, Rubio KTS, Carneiro SP, Dos Santos ODH. Targeting Leishmania Promastigotes and Amastigotes Forms through Amino Acids and Peptides: A Promising Therapeutic Strategy. ACS Infect Dis 2024; 10:2467-2484. [PMID: 38950147 DOI: 10.1021/acsinfecdis.4c00089] [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: 07/03/2024]
Abstract
Millions of people worldwide are affected by leishmaniasis, caused by the Leishmania parasite. Effective treatment is challenging due to the biological complexity of the parasite, drug toxicity, and increasing resistance to conventional drugs. To combat this disease, the development of specific strategies to target and selectively eliminate the parasite is crucial. This Review highlights the importance of amino acids in the developmental stages of Leishmania as a factor determining whether the infection progresses or is suppressed. It also explores the use of peptides as alternatives in parasite control and the development of novel targeted treatments. While these strategies show promise for more effective and targeted treatment, further studies to address the remaining challenges are imperative.
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Affiliation(s)
- Charmante Registre
- Phytotechnology Laboratory, School of Pharmacy, Federal University of Ouro Preto, Ouro Preto, Minas Gerais 35400000, Brazil
| | - Luciana Miranda Silva
- Phytotechnology Laboratory, School of Pharmacy, Federal University of Ouro Preto, Ouro Preto, Minas Gerais 35400000, Brazil
| | - Farah Registre
- School of Medicine, Goiás Federal University, Goiânia, Goiás 74605-050, Brazil
| | - Rodrigo Dian de Oliveira Aguiar Soares
- Immunopathology Laboratory, Center for Research in Biological Sciences/NUPEB, Federal University of Ouro Preto, Ouro Preto, Minas Gerais 35400000, Brazil
| | - Karina Taciana Santos Rubio
- Toxicology Laboratory, School of Pharmacy, Federal University of Ouro Preto, Ouro Preto, Minas Gerais 35400000, Brazil
| | - Simone Pinto Carneiro
- Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics, Ludwig-Maximilians-University of Munich, 81377 Munich, Germany
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Rosa ACG, de Senna AM, Santos FP, Soares AB, de Araújo VC. Oral Leishmaniasis in HIV-Positive and HIV-Negative Patients: A Comparative Analysis with Two New Case Reports. Head Neck Pathol 2024; 18:69. [PMID: 39101990 DOI: 10.1007/s12105-024-01674-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Accepted: 07/06/2024] [Indexed: 08/06/2024]
Abstract
PURPOSE This case report examines the clinical presentation, diagnosis, treatment, and outcomes of mucocutaneous leishmaniasis with primary oral involvement in HIV-positive and HIV-negative patients diagnosed in Brazil. METHODS We discuss the clinical manifestations, diagnostic methods, and therapeutic strategies, highlighting the clinical and histopathologic diagnostic features and distinct progression patterns based on HIV status. Our findings are compared with patterns observed in other countries, emphasizing the differences between the Americas and Europe, Asia, and Africa. RESULTS In the Americas, particularly in Brazil, mucocutaneous leishmaniasis often presents with localized oral lesions, even in the presence of systemic immunosuppression, whereas in the Europe, Asia, and Africa, oral involvement is typically associated with visceral leishmaniasis in immunocompromised patients. These differences were due to variations in the parasite species involved. CONCLUSION This comparison underscores the importance of regional and immunological factors in diagnosing and managing this neglected infectious disease.
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Affiliation(s)
| | | | - Fabrício Passador Santos
- Department of Oral Pathology, São Leopoldo Mandic School of Dentistry, Campinas, São Paulo, Brazil
| | - Andresa Borges Soares
- Department of Oral Pathology, São Leopoldo Mandic School of Dentistry, Campinas, São Paulo, Brazil
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Abdollahi M, Fakhar M, Tajfard M, Jamali J, Mahdizadeh M. Educational WhatsApp-delivered intervention based on social cognitive theory to promote leishmaniosis preventive behavior of health ambassadors: a randomized controlled trial. BMC Infect Dis 2024; 24:786. [PMID: 39103794 DOI: 10.1186/s12879-024-09590-9] [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: 07/14/2023] [Accepted: 07/04/2024] [Indexed: 08/07/2024] Open
Abstract
BACKGROUND Multidimensional strategies can promote preventive behaviors to prevent cutaneous leishmaniosis. WhatsApp, the popular messenger of Iranians, can be used as a platform to provide health education interventions. This study aimed to investigate the effect of using an educational intervention in WhatsApp based on social cognitive theory (SCT) on the preventive behaviors of health ambassadors. METHODS A randomized clinical trial was conducted from September 2020 to April 2021 on 220 people living in endemic areas of leishmaniosis in Mashhad Province, Iran. By the cluster method sampling, the samples were randomly divided into two intervention and control groups. The intervention was performed for the intervention group over two weeks. Data were collected using a researcher-made questionnaire based on the constructs of SCT before and after the intervention. SPSS 16 was implemented to test multiple statistical analyses. RESULTS Findings from the intervention group compared with the control group showed that the scores of SCT constructs and preventive behaviors were significantly changed (P < 0.001) across time during baseline through follow-up. These changes were not significant in the control group. CONCLUSIONS The educational intervention based on the SCT model to promote leishmaniosis preventive behaviors is effective. This intervention module can be tested in other targeted populations in endemic areas to prevent and control leishmaniosis. TRIAL REGISTRATION Iranian Registry of Clinical Trials Registry IRCT20200615047784N1, registered 02/09/2020.
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Affiliation(s)
- Monireh Abdollahi
- Department of Health Education and Health Promotion, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
- Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Fakhar
- Department of Health Education and Health Promotion, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Tajfard
- Department of Health Education and Health Promotion, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Jamshid Jamali
- Department of Biostatistics, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehrsadat Mahdizadeh
- Department of Health Education and Health Promotion, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran.
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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Adomako AK, Gasu EN, Mensah JO, Borquaye LS. Antileishmanial natural products as potential inhibitors of the Leishmania pteridine reductase: insights from molecular docking and molecular dynamics simulations. In Silico Pharmacol 2024; 12:70. [PMID: 39091898 PMCID: PMC11289227 DOI: 10.1007/s40203-024-00247-8] [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: 08/14/2023] [Accepted: 07/22/2024] [Indexed: 08/04/2024] Open
Abstract
Although many natural product-derived compounds possess anti-leishmanial activities in vitro and in vivo, their molecular targets in the Leishmania parasite remain elusive. This is a major challenge in optimizing these compounds into leads. The Leishmania pteridine reductase (PTR1) is peculiar for folate and pterin metabolism and has been validated as a drug target. In this study, 17 compounds with anti-leishmanial activities were screened against Leishmania major PTR1 (LmPTR1) using molecular docking and molecular dynamics (MD) simulations. All ligands were bound in the active site pocket of LmPTR1 with binding affinities ranging from -11.2 to -5.2 kcal/mol. Agnuside, betulin, betulinic acid, gerberinol, ismailin, oleanolic acid, pristimerin, and ursolic acid demonstrated binding affinities similar to a known inhibitor, methyl 1-(4-{[2,4-diaminopteridin-6-yl) methyl] amino} benzoyl) piperidine-4-carboxylate (DVP). MD simulations revealed that betulin, betulinic acid, ismailin, oleanolic acid, pristimerin, and ursolic acid formed stable complexes with LmPTR1. The binding free energies of the complexes were very good (-87 to -148 kJ/mol), and much higher than the complex of the standard DVP inhibitor and LmPTR1 (-27 kJ/mol). Betulin, betulinic acid, ismailin, oleanolic acid, pristimerin, and ursolic acid likely exert their antileishmanial action by inhibiting PTR1 and could thus be used as a basis for the development of potential antileishmanial chemotherapeutic agents. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s40203-024-00247-8.
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Affiliation(s)
| | - Edward Ntim Gasu
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Central Laboratory, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | | | - Lawrence Sheringham Borquaye
- Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Central Laboratory, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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Ramisetty BS, Yang S, Dorlo TPC, Wang MZ. Determining tissue distribution of the oral antileishmanial agent miltefosine: a physiologically-based pharmacokinetic modeling approach. Antimicrob Agents Chemother 2024; 68:e0032824. [PMID: 38842325 PMCID: PMC11232387 DOI: 10.1128/aac.00328-24] [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: 02/28/2024] [Accepted: 05/15/2024] [Indexed: 06/07/2024] Open
Abstract
Miltefosine (MTS) is the only approved oral drug for treating leishmaniasis caused by intracellular Leishmania parasites that localize in macrophages of the liver, spleen, skin, bone marrow, and lymph nodes. MTS is extensively distributed in tissues and has prolonged elimination half-lives due to its high plasma protein binding, slow metabolic clearance, and minimal urinary excretion. Thus, understanding and predicting the tissue distribution of MTS help assess therapeutic and toxicologic outcomes of MTS, especially in special populations, e.g., pediatrics. In this study, a whole-body physiologically-based pharmacokinetic (PBPK) model of MTS was built on mice and extrapolated to rats and humans. MTS plasma and tissue concentration data obtained by intravenous and oral administration to mice were fitted simultaneously to estimate model parameters. The resulting high tissue-to-plasma partition coefficient values corroborate extensive distribution in all major organs except the bone marrow. Sensitivity analysis suggests that plasma exposure is most susceptible to changes in fraction unbound in plasma. The murine oral-PBPK model was further validated by assessing overlay of simulations with plasma and tissue profiles obtained from an independent study. Subsequently, the murine PBPK model was extrapolated to rats and humans based on species-specific physiological and drug-related parameters, as well as allometrically scaled parameters. Fold errors for pharmacokinetic parameters were within acceptable range in both extrapolated models, except for a slight underprediction in the human plasma exposure. These animal and human PBPK models are expected to provide reliable estimates of MTS tissue distribution and assist dose regimen optimization in special populations.
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Affiliation(s)
| | - Sihyung Yang
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, Kansas, USA
| | - Thomas P. C. Dorlo
- Pharmacometrics Research Group, Department of Pharmacy, Uppsala University, Uppsala, Sweden
| | - Michael Zhuo Wang
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, Kansas, USA
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Yizengaw E, Nibret E. Effects of cutaneous leishmaniasis on patients' quality of life. BMC Infect Dis 2024; 24:598. [PMID: 38890616 PMCID: PMC11186278 DOI: 10.1186/s12879-024-09518-3] [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: 02/28/2024] [Accepted: 06/17/2024] [Indexed: 06/20/2024] Open
Abstract
INTRODUCTION Cutaneous Leishmaniasis (CL) is caused by protozoan parasite called Leishmania. It is endemic in more than 100 countries globally. Despite its vast prevalence and impact on quality of life, it is one of the most neglected tropical dermatological diseases. The CL burden has often been expressed based on the physical disfigurement caused by the disease. However, considering the impact of the disease beyond physical impairment and changes in patients' appearance would help to better understand the disease as a public health problem. The effect of CL on patients' quality of life was determined in this study. METHODS The data that were related to quality of life were collected using Standard one-week Dermatology Life Quality Index (DLQI) questionnaire. The questions were categorized under seven domains: symptoms & feelings, daily activities, work and school, leisure, personal relationships, and treatment. Each question was scored on a three-point scale: Very much (3), A lot (2), A little (1), Undecided (0), and Not at all (0). The sum of the scores lied between 0 and 48. A higher score shows worse quality of life. The data were entered and analysed using Statistical Package for Social Science 23. Frequencies and proportions were used to describe the data. Differences were considered statistically significant at p < 0.05. RESULTS The lives of the majority of CL patients (60.7%) were significantly affected by CL. The quality of life of patients was moderately impacted by CL in 25% of the CL patients. In 32.1% of the CL patients, the effect of CL on patients' quality of life was very large. The quality of one CL patient's life was extremely largely affected. The disease had a small effect on 32.1% of the CL patients. Personal relationship was the most affected domain followed by symptoms and feelings and treatment. Future study including rural regions is required. CONCLUSION The Dermatology Life Quality Index demonstrates that CL has a small to extremely very large negative effect on the quality of life of patients.
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Affiliation(s)
- Endalew Yizengaw
- Department of Medical Laboratory Science, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia.
- Institute of Biotechnology, Bahir Dar University, Bahir Dar, Ethiopia.
| | - Endalkachew Nibret
- Institute of Biotechnology, Bahir Dar University, Bahir Dar, Ethiopia
- Department of Biology, College of Science, Bahir Dar University, Bahir Dar, Ethiopia
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Wangdi T, Senanayake S, Dorjee S, Tobgay T, Zhou G, Piyasiri SB, Weerasinghe WMLI, Karunaweera N. Distribution and Seasonal Variation of Phlebotomus and Sergentomyia Sand Fly Populations in Bhutan. Am J Trop Med Hyg 2024; 110:1117-1126. [PMID: 38593793 PMCID: PMC11154039 DOI: 10.4269/ajtmh.23-0125] [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: 02/24/2023] [Accepted: 11/26/2023] [Indexed: 04/11/2024] Open
Abstract
Leishmaniasis is considered one of the neglected tropical diseases in the world. Although Bhutan is a member of the visceral leishmaniasis elimination consortium in South Asia, not much attention has been accorded to the disease because of its low incidence. The vector that transmits Leishmania remains poorly understood. In this backdrop, sand-fly surveys were regularly conducted at multiple sites where leishmaniasis cases have been reported in Bhutan. Collections were made using CDC light traps and cattle-baited net traps in 15 villages from February 2019 to May 2022. Six species of Phlebotomus and four species of Sergentomyia were identified from these sites that included two Phlebotomus and three Sergentomyia species discovered for the first time in Bhutan. Sand-fly density varied significantly from village to village, and it showed strong seasonality with peak numbers collected from June to October and almost zero from December to February. Overall, sand-fly density was highest in the basements of the houses and were higher outdoors than indoors. Cattle-baited net traps collected few sand flies during the surveillance period. This work constituted the first systematic sand-fly population surveillance conducted in Bhutan and will provide a baseline for future vector ecology and Leishmania epidemiological studies.
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Affiliation(s)
- Tenzin Wangdi
- Vector Borne Disease Control Programme, Ministry of Health, Gelephu, Bhutan
| | - Sanath Senanayake
- Department of Parasitology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Sithar Dorjee
- Khesar Gyalpo University of Medical Sciences of Bhutan, Thimphu, Bhutan
| | - Tashi Tobgay
- Khesar Gyalpo University of Medical Sciences of Bhutan, Thimphu, Bhutan
| | - Guofa Zhou
- Program in Public Health, University of California, Irvine, California
| | - Sachee B. Piyasiri
- Department of Parasitology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | | | - Nadira Karunaweera
- Department of Parasitology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
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12
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Sheikh SY, Hassan F, Shukla D, Bala S, Faruqui T, Akhter Y, Khan AR, Nasibullah M. A review on potential therapeutic targets for the treatment of leishmaniasis. Parasitol Int 2024; 100:102863. [PMID: 38272301 DOI: 10.1016/j.parint.2024.102863] [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: 05/30/2023] [Revised: 12/22/2023] [Accepted: 01/21/2024] [Indexed: 01/27/2024]
Abstract
Leishmania, a protozoan parasite, is responsible for the occurrence of leishmaniasis, a disease that is prevalent in tropical regions. Visceral Leishmaniasis (VL), also known as kala-azar in Asian countries, is one of the most significant forms of VL, along with Cutaneous Leishmaniasis (CL) and Mucocutaneous Leishmaniasis (ML). Management of this condition typically entails the use of chemotherapy as the sole therapeutic option. The current treatments for leishmaniasis present several drawbacks, including a multitude of side effects, prolonged treatment duration, disparate efficacy across different regions, and the emergence of resistance. To address this urgent need, it is imperative to identify alternative treatments that are both safer and more effective. The identification of appropriate pharmacological targets in conjunction with biological pathways constitutes the initial stage of drug discovery. In this review, we have addressed the key metabolic pathways that represent potential pharmacological targets as well as prominent treatment options for leishmaniasis.
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Affiliation(s)
- Sabahat Yasmeen Sheikh
- Department of Chemistry, Integral University, Dasauli, Kursi road, Lucknow 226026, India
| | - Firoj Hassan
- Department of Chemistry, Integral University, Dasauli, Kursi road, Lucknow 226026, India
| | - Deepanjali Shukla
- Department of Chemistry, Integral University, Dasauli, Kursi road, Lucknow 226026, India
| | - Shashi Bala
- Department of Chemistry, Lucknow University, Lucknow 226026, India
| | - Tabrez Faruqui
- Department of Biosciences, Integral University, Lucknow 226026, India
| | - Yusuf Akhter
- Department of Biotechnology, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow 226025, India
| | - Abdul Rahman Khan
- Department of Chemistry, Integral University, Dasauli, Kursi road, Lucknow 226026, India
| | - Malik Nasibullah
- Department of Chemistry, Integral University, Dasauli, Kursi road, Lucknow 226026, India.
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Msellemu D, Tanner M, Yadav R, Moore SJ. Occupational exposure to malaria, leishmaniasis and arbovirus vectors in endemic regions: A systematic review. CURRENT RESEARCH IN PARASITOLOGY & VECTOR-BORNE DISEASES 2024; 6:100185. [PMID: 39027087 PMCID: PMC11252614 DOI: 10.1016/j.crpvbd.2024.100185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/26/2024] [Accepted: 06/01/2024] [Indexed: 07/20/2024]
Abstract
Vector-borne diseases, including dengue, leishmaniasis and malaria, may be more common among individuals whose occupations or behaviours bring them into frequent contact with these disease vectors outside of their homes. A systematic review was conducted to ascertain at-risk occupations and situations that put individuals at increased risk of exposure to these disease vectors in endemic regions and identify the most suitable interventions for each exposure. The review was conducted in accordance with PRISMA guidelines on articles published between 1945 and October 2021, searched in 16 online databases. The primary outcome was incidence or prevalence of dengue, leishmaniasis or malaria. The review excluded ecological and qualitative studies, abstracts only, letters, commentaries, reviews, and studies of laboratory-acquired infections. Studies were appraised, data extracted, and a descriptive analysis conducted. Bite interventions for each risk group were assessed. A total of 1170 articles were screened and 99 included. Malaria, leishmaniasis and dengue were presented in 47, 41 and 24 articles, respectively; some articles presented multiple conditions. The most represented populations were soldiers, 38% (43 of 112 studies); refugees and travellers, 15% (17) each; migrant workers, 12.5% (14); miners, 9% (10); farmers, 5% (6); rubber tappers and missionaries, 1.8% (2) each; and forest workers, 0.9% (1). Risk of exposure was categorised into round-the-clock or specific times of day/night dependent on occupation. Exposure to these vectors presents a critical and understudied concern for outdoor workers and mobile populations. When devising interventions to provide round-the-clock vector bite protection, two populations are considered. First, mobile populations, characterized by their high mobility, may find potential benefits in insecticide-treated clothing, though more research and optimization are essential. Treated clothing offers personal vector protection and holds promise for economically disadvantaged individuals, especially when enabling them to self-treat their clothing to repel vectors. Secondly, semi-permanent and permanent settlement populations can receive a combination of interventions that offer both personal and community protection, including spatial repellents, suitable for extended stays. Existing research is heavily biased towards tourism and the military, diverting attention and resources from vulnerable populations where these interventions are most required like refugee populations as well as those residing in sub-Saharan Africa.
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Affiliation(s)
- Daniel Msellemu
- Vector Control Product Testing Unit, Environmental Health and Ecological Sciences Department, Ifakara Health Institute, Tanzania
- Swiss Tropical and Public Health Institute, Kreuzstrasse 2, 4123, Allschwil, Switzerland
- University of Basel, Petersplatz 1, 4003, Basel, Switzerland
| | - Marcel Tanner
- Swiss Tropical and Public Health Institute, Kreuzstrasse 2, 4123, Allschwil, Switzerland
- University of Basel, Petersplatz 1, 4003, Basel, Switzerland
| | - Rajpal Yadav
- Department of Control of Neglected Tropical Diseases, World Health Organization, Geneva, Switzerland
- Academy of Public Health Entomology, Udaipur, 313 002, India
| | - Sarah J. Moore
- Vector Control Product Testing Unit, Environmental Health and Ecological Sciences Department, Ifakara Health Institute, Tanzania
- Swiss Tropical and Public Health Institute, Kreuzstrasse 2, 4123, Allschwil, Switzerland
- University of Basel, Petersplatz 1, 4003, Basel, Switzerland
- The Nelson Mandela African Institution of Science and Technology (NM-AIST), P.O. Box 447, Tengeru, Arusha, Tanzania
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Present C, Girão RD, Lin C, Caljon G, Van Calenbergh S, Moreira O, Ruivo LADS, Batista MM, Azevedo R, Batista DDGJ, Soeiro MDNC. N 6-methyltubercidin gives sterile cure in a cutaneous Leishmania amazonensis mouse model. Parasitology 2024; 151:506-513. [PMID: 38533610 PMCID: PMC11106500 DOI: 10.1017/s0031182024000362] [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: 12/05/2023] [Revised: 02/29/2024] [Accepted: 03/15/2024] [Indexed: 03/28/2024]
Abstract
Leishmania is a trypanosomatid parasite that causes skin lesions in its cutaneous form. Current therapies rely on old and expensive drugs, against which the parasites have acquired considerable resistance. Trypanosomatids are unable to synthesize purines relying on salvaging from the host, and nucleoside analogues have emerged as attractive antiparasitic drug candidates. 4-Methyl-7-β-D-ribofuranosyl-7H-pyrrolo[2,3-d]pyrimidine (CL5564), an analogue of tubercidin in which the amine has been replaced by a methyl group, demonstrates activity against Trypanosoma cruzi and Leishmania infantum. Herein, we investigated its in vitro and in vivo activity against L. amazonensis. CL5564 was 6.5-fold (P = 0.0002) more potent than milteforan™ (ML) against intracellular forms in peritoneal mouse macrophages, and highly selective, while combination with ML gave an additive effect. These results stimulated us to study the activity of CL5564 in mouse model of cutaneous Leishmania infection. BALB/c female and male mice infected by L. amazonensis treated with CL5564 (10 mg kg−1, intralesional route for five days) presented a >93% reduction of paw lesion size likely ML given orally at 40 mg kg−1, while the combination (10 + 40 mg kg−1 of CL5564 and ML, respectively) caused >96% reduction. The qPCR confirmed the suppression of parasite load, but only the combination approach reached 66% of parasitological cure. These results support additional studies with nucleoside derivatives.
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Affiliation(s)
- Cassandra Present
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360 Rio de Janeiro, Brazil
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium
| | - Roberson Donola Girão
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360 Rio de Janeiro, Brazil
| | - Cai Lin
- Laboratory for Medicinal Chemistry (Campus Heymans), Ghent University, Ottergemsesteenweg 460, B-9000 Gent, Belgium
| | - Guy Caljon
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry (Campus Heymans), Ghent University, Ottergemsesteenweg 460, B-9000 Gent, Belgium
| | - Otacilio Moreira
- Laboratório de Virologia e Parasitologia Molecular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360 Rio de Janeiro, Brazil
| | - Leonardo Alexandre de Souza Ruivo
- Laboratório de Virologia e Parasitologia Molecular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360 Rio de Janeiro, Brazil
| | - Marcos Meuser Batista
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360 Rio de Janeiro, Brazil
| | - Raquel Azevedo
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360 Rio de Janeiro, Brazil
| | - Denise da Gama Jaen Batista
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360 Rio de Janeiro, Brazil
| | - Maria de Nazaré Correia Soeiro
- Laboratorio de Biologia Celular, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Avenida Brasil 4365, Manguinhos, 21040-360 Rio de Janeiro, Brazil
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15
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Pivotto AP, de Souza Lima LB, Michelon A, Ferreira CZP, Gandra RF, Ayala TS, Menolli RA. Topical application of ozonated sunflower oil accelerates the healing of lesions of cutaneous leishmaniasis in mice under meglumine antimoniate treatment. Med Microbiol Immunol 2024; 213:4. [PMID: 38532203 DOI: 10.1007/s00430-024-00788-x] [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: 04/10/2023] [Accepted: 01/24/2024] [Indexed: 03/28/2024]
Abstract
Besides being scarce, the drugs available for treating cutaneous leishmaniasis have many adverse effects. Ozone is an option to enhance the standard treatment due to the wound-healing activity reported in the literature. In this study, we evaluated the efficiency of ozonated sunflower oil as an adjuvant in treating cutaneous lesions caused by Leishmania amazonensis. BALB/c mice were infected with L. amazonensis, and after the lesions appeared, they were treated in four different schedules using the drug treatment with meglumine antimoniate (Glucantime®), with or without ozonated oil. After thirty days of treatment, the lesions' thickness and their parasitic burden, blood leukocytes, production of NO and cytokines from peritoneal macrophages and lymph node cells were analyzed. The group treated with ozonated oil plus meglumine antimoniate showed the best performance, improving the lesion significantly. The parasitic burden showed that ozonated oil enhanced the leishmanicidal activity of the treatment, eliminating the parasites in the lesion. Besides, a decrease in the TNF levels from peritoneal macrophages and blood leukocytes demonstrated an immunomodulatory action of ozone in the ozonated oil-treated animals compared to the untreated group. Thus, ozonated sunflower oil therapy has been shown as an adjuvant in treating Leishmania lesions since this treatment enhanced the leishmanicidal and wound healing effects of meglumine antimoniate.
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Affiliation(s)
- Ana Paula Pivotto
- Laboratory of Applied Immunology, Center of Medical and Pharmaceutical Sciences, Western Parana State University, Cascavel, PR, Zip Code 85819-110, Brazil
| | - Lucas Bonatto de Souza Lima
- Laboratory of Applied Immunology, Center of Medical and Pharmaceutical Sciences, Western Parana State University, Cascavel, PR, Zip Code 85819-110, Brazil
| | - Alexandra Michelon
- Laboratory of Applied Immunology, Center of Medical and Pharmaceutical Sciences, Western Parana State University, Cascavel, PR, Zip Code 85819-110, Brazil
| | - Camilla Zottesso Pellon Ferreira
- Laboratory of Applied Immunology, Center of Medical and Pharmaceutical Sciences, Western Parana State University, Cascavel, PR, Zip Code 85819-110, Brazil
| | - Rinaldo Ferreira Gandra
- Laboratory of Microbiology, Western Parana University Hospital, Western Parana State University, Cascavel, PR, Brazil
| | - Thaís Soprani Ayala
- Laboratory of Applied Immunology, Center of Medical and Pharmaceutical Sciences, Western Parana State University, Cascavel, PR, Zip Code 85819-110, Brazil
| | - Rafael Andrade Menolli
- Laboratory of Applied Immunology, Center of Medical and Pharmaceutical Sciences, Western Parana State University, Cascavel, PR, Zip Code 85819-110, Brazil.
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16
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Carrara GMP, Stolf BS. FVB/NJ strain as a mouse model for cutaneous leishmaniasis by Leishmania (L.) amazonensis. Mem Inst Oswaldo Cruz 2024; 119:e230182. [PMID: 38511814 PMCID: PMC10941652 DOI: 10.1590/0074-02760230182] [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: 10/05/2023] [Accepted: 02/19/2024] [Indexed: 03/22/2024] Open
Abstract
BACKGROUND Leishmaniases encompass a spectrum of neglected diseases caused by parasites of the genus Leishmania, grouped in two forms: tegumentary and visceral leishmaniasis. OBJECTIVES In this study, we propose Friend Virus B NIH Jackson (FVB/NJ) mouse strain as a new experimental model of infection with Leishmania (Leishmania) amazonensis, the second most prevalent agent of tegumentary leishmaniasis in Brazil. METHODS AND FINDINGS We performed in vitro infections of FVB/NJ macrophages and compared them with BALB/c macrophages, showing that BALB/c cells have higher infection percentages and a higher number of amastigotes/cell. Phagocytosis assays indicated that BALB/c and FVB/NJ macrophages have similar capacity to uptake parasites after 5 min incubations. We also investigated promastigotes' resistance to sera from FVB/NJ and BALB/c and observed no difference between the two sera, even though FVB/NJ has a deficiency in complement components. Finally, we subcutaneously infected FVB/NJ and BALB/c mice with 2 × 106 parasites expressing luciferase. Analysis of lesion development for 12 weeks showed that FVB/NJ and BALB/c mice have similar lesion profiles and parasite burdens. MAIN CONCLUSIONS This work characterises for the first time the FVB/NJ mouse as a new model for tegumentary leishmaniasis caused by Leishmania (L.) amazonensis.
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Affiliation(s)
| | - Beatriz Simonsen Stolf
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Parasitologia, São Paulo, SP, Brasil
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17
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Khazal RM, Flaih MH, Kadhim MK, Hussein KR. Genetic Diversity of Leishmania major Isolated from Different Dermal Lesions Using ITS2 Region. Acta Parasitol 2024; 69:831-838. [PMID: 38436865 DOI: 10.1007/s11686-024-00817-y] [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: 06/22/2023] [Accepted: 01/24/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND AND OBJECTIVE Cutaneous leishmaniasis (CL) is still considered to be an uncontrolled endemic disease that spreads in many countries. The current study aimed to determine intra-species relationships of L. major using ITS2 sequencing. METHODS The study was conducted from the beginning of March to the end of November 2022. All medical information regarding CL was collected from patients of Thi-Qar province who attended the Dermatology Department of Al-Hussein Teaching Hospital in Nasiriyah city. Seventy-three samples were selected for the molecular identification after confirming microscopy with Giemsa stain. In this study, the primers were designed using NCBI GenBank sequence database and Primer 3 plus primer design online software. RESULTS The results recorded 21 (28.77%) positive samples of L. major using the internal transcribed spacer 2 region (ITS2) in ribosomal RNA gene. The local L. major IQN.1-IQN.10 were submitted to NCBI GenBank database with accession numbers OM069357.1-OM069366.1, respectively. The phylogenetic analysis revealed that local isolates of L. major showed a close relationship with NCBI-BLAST L. major Iran isolate (KU680848.1). CONCLUSION ITS2-PCR is suitable for identifying Leishmania spp. and determining genetic diversity. A phylogenetic data analysis may provide an idea on the genetic homogeneity of local isolates and knowing the genetic origin of the dermal lesion. However, the local isolates showed genetic proximity to the KU680848.1 isolate. This signifies the possibility of infection prevalence from Iranian areas. In general, genetic variation of L. major isolates may give several clinical manifestations of the cutaneous lesion. Therefore, determination of the heterogeneity is important for detecting the infection origin, epidemiology, therapy, and control strategies.
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Affiliation(s)
- Ruaa M Khazal
- Department of Medical Laboratory Techniques, Nasiriyah Technical Institute, Southern Technical University, Nasiriyah, 64001, Iraq
| | - Mohammed H Flaih
- Department of Nursing Techniques, Nasiriyah Technical Institute, Southern Technical University, Nasiriyah, 64001, Iraq.
| | - Manar K Kadhim
- Education Directorate of Thi-Qar, Ministry of Education, Nasiriyah, 64001, Iraq
| | - Khwam R Hussein
- Department of Nursing Techniques, Nasiriyah Technical Institute, Southern Technical University, Nasiriyah, 64001, Iraq
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Pacher G, Franca T, Lacerda M, Alves NO, Piranda EM, Arruda C, Cena C. Diagnosis of Cutaneous Leishmaniasis Using FTIR Spectroscopy and Machine Learning: An Animal Model Study. ACS Infect Dis 2024; 10:467-474. [PMID: 38189234 DOI: 10.1021/acsinfecdis.3c00430] [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: 01/09/2024]
Abstract
Cutaneous leishmaniasis (CL) is a polymorphic and spectral skin disease caused by Leishmania spp. protozoan parasites. CL is difficult to diagnose because conventional methods are time-consuming, expensive, and low-sensitive. Fourier transform infrared spectroscopy (FTIR) with machine learning (ML) algorithms has been explored as an alternative to achieve fast and accurate results for many disease diagnoses. Besides the high accuracy demonstrated in numerous studies, the spectral variations between infected and noninfected groups are too subtle to be noticed. Since variability in sample set characteristics (such as sex, age, and diet) often leads to significant data variance and limits the comprehensive understanding of spectral characteristics and immune responses, we investigate a novel methodology for diagnosing CL in an animal model study. Blood serum, skin lesions, and draining popliteal lymph node samples were collected from Leishmania (Leishmania) amazonensis-infected BALB/C mice under experimental conditions. The FTIR method and ML algorithms accurately differentiated between infected (CL group) and noninfected (control group) samples. The best overall accuracy (∼72%) was obtained in an external validation test using principal component analysis and support vector machine algorithms in the 1800-700 cm-1 range for blood serum samples. The accuracy achieved in analyzing skin lesions and popliteal lymph node samples was satisfactory; however, notable disparities emerged in the validation tests compared to results obtained from blood samples. This discrepancy is likely attributed to the elevated sample variability resulting from molecular compositional differences. According to the findings, the successful functioning of prediction models is mainly related to data analysis rather than the differences in the molecular composition of the samples.
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Affiliation(s)
- Gabriela Pacher
- Laboratório de Parasitologia Humana, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Thiago Franca
- Laboratório de Óptica e Fotônica (SISFOTON-UFMS), Instituto de Física, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Miller Lacerda
- Laboratório de Óptica e Fotônica (SISFOTON-UFMS), Instituto de Física, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Natália O Alves
- Laboratório de Parasitologia Humana, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Eliane M Piranda
- Laboratório de Parasitologia Humana, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Carla Arruda
- Laboratório de Parasitologia Humana, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
| | - Cícero Cena
- Laboratório de Óptica e Fotônica (SISFOTON-UFMS), Instituto de Física, Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil
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Nath M, Bhowmik D, Saha S, Nandi R, Kumar D. Identification of potential inhibitor against Leishmania donovani mitochondrial DNA primase through in-silico and in vitro drug repurposing approaches. Sci Rep 2024; 14:3246. [PMID: 38332162 PMCID: PMC10853515 DOI: 10.1038/s41598-024-53316-5] [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: 10/07/2023] [Accepted: 01/30/2024] [Indexed: 02/10/2024] Open
Abstract
Leishmania donovani is the causal organism of leishmaniasis with critical health implications affecting about 12 million people around the globe. Due to less efficacy, adverse side effects, and resistance, the available therapeutic molecules fail to control leishmaniasis. The mitochondrial primase of Leishmania donovani (LdmtPRI1) is a vital cog in the DNA replication mechanism, as the enzyme initiates the replication of the mitochondrial genome of Leishmania donovani. Hence, we target this protein as a probable drug target against leishmaniasis. The de-novo approach enabled computational prediction of the three-dimensional structure of LdmtPRI1, and its active sites were identified. Ligands from commercially available drug compounds were selected and docked against LdmtPRI1. The compounds were chosen for pharmacokinetic study and molecular dynamics simulation based on their binding energies and protein interactions. The LdmtPRI1 gene was cloned, overexpressed, and purified, and a primase activity assay was performed. The selected compounds were verified experimentally by the parasite and primase inhibition assay. Capecitabine was observed to be effective against the promastigote form of Leishmania donovani, as well as inhibiting primase activity. This study's findings suggest capecitabine might be a potential anti-leishmanial drug candidate after adequate further studies.
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Affiliation(s)
- Mitul Nath
- Department of Microbiology, Assam University, Silchar, Assam, 788011, India
| | - Deep Bhowmik
- Department of Microbiology, Assam University, Silchar, Assam, 788011, India
| | - Satabdi Saha
- Department of Microbiology, Assam University, Silchar, Assam, 788011, India
| | - Rajat Nandi
- Department of Microbiology, Assam University, Silchar, Assam, 788011, India
| | - Diwakar Kumar
- Department of Microbiology, Assam University, Silchar, Assam, 788011, India.
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Nogueira de Brito R, Tanner S, Runk JV, Hoyos J. Looking through the lens of social science approaches: A scoping review of leishmaniases and Chagas disease research. Acta Trop 2024; 249:107059. [PMID: 37918504 DOI: 10.1016/j.actatropica.2023.107059] [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: 08/24/2023] [Revised: 10/27/2023] [Accepted: 10/30/2023] [Indexed: 11/04/2023]
Abstract
Scholars have called for increased attention to sociocultural, economic, historical, and political processes shaping Neglected Tropical Diseases (NTDs) ecology. We conducted a scoping review to identify major research themes and the knowledge gaps in social science literature in leishmaniases or Chagas disease (CD). Following the scoping review protocol, we first determined the focus of the review to be centered on identifying research that approaches leishmaniases and CD from social science perspective and was indexed by large, biomedically focused databases. We then searched PubMed and Web of Science using "Leishmaniasis" and "Chagas disease" with "social science" or "anthropology" as search terms. We analyzed 199 articles (123 on leishmaniases and 76 on CD), categorizing them into three main research themes. Sociocultural dimensions of the diseases (leishmaniases=60.2 %; CD=68.4 %) primarily focused on individuals' knowledge, practices, and behaviors, barriers to accessing healthcare (especially in endemic regions), psychosocial effects, stigma, and traditional treatments. Research focused on socioeconomic dimensions of the diseases (leishmaniases=29.3 %; CD=19.7 %) included topics like household characteristics, social capital, and infrastructure access. A final theme, the historical and political contexts of the diseases (Leishmaniases=10.5 %; CD=11.9 %) was less common than other themes. Here, studies consider civil war and the (re)emergence of leishmaniasis, as well as the significance of CD discovery for scientific and public health in Brazil, which is the most common country for research on both leishmaniases and CD that draws on social science approaches. Future directions for research include focusing on how social institutions and economic factors shape diseases education, control measures, healthcare access, and quality of life of people affected by NTDs. Greater attention to social sciences can help mitigate and undo the ways that structural biases have infiltrated biomedicine.
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Affiliation(s)
- Raíssa Nogueira de Brito
- Department of Anthropology, University of Georgia, Athens, GA 30602, United States; Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA 30602, United States.
| | - Susan Tanner
- Department of Anthropology, University of Georgia, Athens, GA 30602, United States
| | - Julie Velásquez Runk
- Environment and Sustainability Studies Program, Wake Forest University, Winston Salem, NC 27109, United States; Smithsonian Tropical Research Institute, Balboa, Ciudad de Panamá 0843-03092, Republic of Panama
| | - Juliana Hoyos
- Odum School of Ecology, University of Georgia, Athens, GA 30602, United States
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21
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Ruang-Areerate T, Ruang-Areerate P, Manomat J, Naaglor T, Piyaraj P, Mungthin M, Leelayoova S, Siripattanapipong S. Genetic variation and geographic distribution of Leishmania orientalis and Leishmania martiniquensis among Leishmania/HIV co-infection in Thailand. Sci Rep 2023; 13:23094. [PMID: 38155252 PMCID: PMC10754904 DOI: 10.1038/s41598-023-50604-4] [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: 07/19/2023] [Accepted: 12/21/2023] [Indexed: 12/30/2023] Open
Abstract
Since 1999, the number of asymptomatic leishmaniasis cases has increased continuously in Thailand, particularly among patients with HIV who are prone to develop symptoms of cutaneous and visceral leishmaniasis further. The asymptomatic infection could play a key role in Leishmania transmission and distribution. Understanding population structure and phylogeographic patterns could be crucially needed to develop effective diagnoses and appropriate guidelines for therapy. In this study, genetic variation and geographic distribution of the Leishmania/HIV co-infected population were investigated in endemic northern and southern Thailand. Interestingly, Leishmania orientalis was common and predominant in these two regions with common regional haplotype distribution but not for the others. Recent population expansion was estimated, probably due to the movement and migration of asymptomatic individuals; therefore, the transmission and prevalence of Leishmania infection could be underestimated. These findings of imbalanced population structure and phylogeographic distribution patterns provide valuable, insightful population structure and geographic distribution of Leishmania/HIV co-infection to empower prevention and control of transmission and expansion of asymptomatic leishmaniasis.
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Affiliation(s)
- Toon Ruang-Areerate
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, 10400, Thailand.
| | - Panthita Ruang-Areerate
- BIOTEC, National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Jipada Manomat
- Department of Microbiology, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Tawee Naaglor
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, 10400, Thailand
| | - Phunlerd Piyaraj
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, 10400, Thailand
| | - Mathirut Mungthin
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, 10400, Thailand
| | - Saovanee Leelayoova
- Department of Parasitology, Phramongkutklao College of Medicine, Bangkok, 10400, Thailand
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22
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Alunda JM. Antileishmanial and Antitrypanosomes Drugs for the Current Century. Microorganisms 2023; 12:43. [PMID: 38257870 PMCID: PMC10818473 DOI: 10.3390/microorganisms12010043] [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: 09/14/2023] [Revised: 11/30/2023] [Accepted: 12/20/2023] [Indexed: 01/24/2024] Open
Abstract
Human infections by trypanosomatids are widely distributed and prevalent in the tropical and subtropical regions. Diseases caused by Trypanosoma and Leishmania have variable clinical outcomes, ranging from self-healing to fatality, and are considered Neglected Tropical Diseases (NTD). In addition, animal trypanosomiases have a significant impact on animal health and production, apart from their potential role as reservoirs in zoonotic species. Control of these infections is progressing and, in some cases (such as human African trypanomiasis (HAT)), significant reductions have been achieved. In the absence of effective vaccination, chemotherapy is the most used control method. Unfortunately, the therapeutic arsenal is scarce, old, and of variable efficacy, and reports of resistance to most antiparasitic agents have been published. New drugs, formulations, or combinations are needed to successfully limit the spread and severity of these diseases within a One Health framework. In this Special Issue, contributions regarding the identification and validation of drug targets, underlying mechanisms of action and resistance, and potential new molecules are presented. These research contributions are complemented by an update revision of the current chemotherapy against African Trypanosoma species, and a critical review of the shortcomings of the prevailing model of drug discovery and development.
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Affiliation(s)
- José María Alunda
- Department of Animal Health, Faculty of Veterinary Medicine, Universidad Complutense de Madrid, 28040 Madrid, Spain; ; Tel.: +34-913-943-701
- Institute of Industrial Pharmacy, Faculty of Pharmacy, Universidad Complutense de Madrid, 28040 Madrid, Spain
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23
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Edwards CL, Engel JA, de Labastida Rivera F, Ng SS, Corvino D, Montes de Oca M, Frame TC, Chauhan SB, Singh SS, Kumar A, Wang Y, Na J, Mukhopadhyay P, Lee JS, Nylen S, Sundar S, Kumar R, Engwerda CR. A molecular signature for IL-10-producing Th1 cells in protozoan parasitic diseases. JCI Insight 2023; 8:e169362. [PMID: 37917177 PMCID: PMC10807716 DOI: 10.1172/jci.insight.169362] [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: 02/01/2023] [Accepted: 10/31/2023] [Indexed: 11/04/2023] Open
Abstract
Control of visceral leishmaniasis (VL) depends on proinflammatory Th1 cells that activate infected tissue macrophages to kill resident intracellular parasites. However, proinflammatory cytokines produced by Th1 cells can damage tissues and require tight regulation. Th1 cell IL-10 production is an important cell-autologous mechanism to prevent such damage. However, IL-10-producing Th1 (type 1 regulatory; Tr1) cells can also delay control of parasites and the generation of immunity following drug treatment or vaccination. To identify molecules to target in order to alter the balance between Th1 and Tr1 cells for improved antiparasitic immunity, we compared the molecular and phenotypic profiles of Th1 and Tr1 cells in experimental VL caused by Leishmania donovani infection of C57BL/6J mice. We also identified a shared Tr1 cell protozoan signature by comparing the transcriptional profiles of Tr1 cells from mice with experimental VL and malaria. We identified LAG3 as an important coinhibitory receptor in patients with VL and experimental VL, and we reveal tissue-specific heterogeneity of coinhibitory receptor expression by Tr1 cells. We also discovered a role for the transcription factor Pbx1 in suppressing CD4+ T cell cytokine production. This work provides insights into the development and function of CD4+ T cells during protozoan parasitic infections and identifies key immunoregulatory molecules.
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Affiliation(s)
- Chelsea L. Edwards
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- University of Queensland, School of Medicine, Brisbane, Australia
| | | | | | - Susanna S. Ng
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- Griffith University, School of Natural Sciences, Nathan, Australia
- Institute of Experimental Oncology, University of Bonn, Bonn, Germany
| | - Dillon Corvino
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- Institute of Experimental Oncology, University of Bonn, Bonn, Germany
| | | | - Teija C.M. Frame
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- University of Queensland, School of Medicine, Brisbane, Australia
| | | | | | - Awnish Kumar
- Centre of Experimental Medicine and Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Yulin Wang
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- Griffith University, School of Natural Sciences, Nathan, Australia
| | - Jinrui Na
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- University of Queensland, School of Medicine, Brisbane, Australia
| | | | - Jason S. Lee
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
- University of Queensland, School of Medicine, Brisbane, Australia
| | - Susanne Nylen
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, Stockholm, Sweden
| | | | - Rajiv Kumar
- Centre of Experimental Medicine and Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
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24
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Anjum A, Shabbir K, Din FU, Shafique S, Zaidi SS, Almari A, Alqahtani T, Maryiam A, Moneeb Khan M, Al Fatease A, Bashir S, Khan GM. Co-delivery of amphotericin B and pentamidine loaded niosomal gel for the treatment of Cutaneous leishmaniasis. Drug Deliv 2023; 30:2173335. [PMID: 36722301 PMCID: PMC9897754 DOI: 10.1080/10717544.2023.2173335] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Topical drug delivery is preferable route over systemic delivery in case of Cutaneous leishmaniasis (CL). Among the available agents, amphotericin B (AmB) and pentamidine (PTM) showed promising result against CL. However, monotherapy is associated with incidences of reoccurrence and resistance. Combination therapy is therefore recommended. Thin film hydration method was employed for amphotericin B-pentamidine loaded niosomes (AmB-PTM-NIO) preparation followed by their incorporation into chitosan gel. The optimization of AmB-PTM-NIO was done via Box Behnken Design method and in vitro and ex vivo analysis was performed. The optimized formulation indicated 226 nm particle size (PS) with spherical morphology, 0.173 polydispersity index (PDI), -36 mV zeta potential (ZP) and with entrapment efficiency (EE) of 91% (AmB) and 79% (PTM), respectively. The amphotericin B-pentamidine loaded niosomal gel (AmB-PTM-NIO-Gel) showed desirable characteristics including physicochemical properties, pH (5.1 ± 0.15), viscosity (31870 ± 25 cP), and gel spreadability (280 ± 26.46%). In vitro release of the AmB and PTM from AmB-PTM-NIO and AmB-PTM-NIO-Gel showed more prolonged release behavior as compared to their respective drug solution. Higher skin penetration, greater percentage inhibition and lower IC50 against the promastigotes shows that AmB-PTM-NIO has better antileishmanial activity. The obtained findings suggested that the developed AmB-PTM-NIO-Gel has excellent capability of permeation via skin layers, sustained release profile and augmented anti-leishmanial outcome of the incorporated drugs.
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Affiliation(s)
- Adnan Anjum
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan,Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | - Kanwal Shabbir
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan,Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | - Fakhar Ud Din
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan,Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan,CONTACT Fakhar Ud Din
| | - Shumaila Shafique
- Dow College of Pharmacy, Faculty of Pharmaceutical Sciences, Dow University of Health Sciences Karachi
| | - Syed Saoud Zaidi
- Dow College of Pharmacy, Faculty of Pharmaceutical Sciences, Dow University of Health Sciences Karachi
| | - Ali H Almari
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Taha Alqahtani
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Aleena Maryiam
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan,Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | - Muhammad Moneeb Khan
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan,Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | - Adel Al Fatease
- Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Sidra Bashir
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan,Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
| | - Gul Majid Khan
- Nanomedicine Research Group, Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan,Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan,Islamia College University, Peshawar, Pakistan,Gul Majid Khan Department of Pharmacy, Faculty of Biological Sciences, Quaid-I-Azam University, Islamabad, Pakistan
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25
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Khalilzadeh M, Saberi S, Noori G, Vaziri M, Sepehri S, Bakherad H, Esmaeili-Fallah M, Mirzayi S, Farhadi G. Synthesis, biological assessment, and computational investigations of nifedipine and monastrol analogues as anti-leishmanial major and anti-microbial agents. Mol Divers 2023; 27:2555-2575. [PMID: 36417095 DOI: 10.1007/s11030-022-10569-4] [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: 09/01/2022] [Accepted: 11/11/2022] [Indexed: 11/24/2022]
Abstract
Leishmaniasis includes a range of parasitic diseases caused by numerous types of the protozoan kinetoplastid parasite. Fungal and bacterial pathogens have led to infectious illnesses causing some main public health problem in current years. A series of dihydropyridine and tetrahydropyrimidine derivatives having fluoro, bromo, and nitro substituents at para-phenyl ring on C4 of dihydropyridine and tetrahydropyrimidine rings were synthesized. Then, anti-leishmanial and antimicrobial potencies of compounds were assessed. All compounds were synthesized via Hantzsch and Biginelli reactions. All derivatives were evaluated for their anti-leishmanial and antimicrobial activities. Moreover, docking and molecular dynamics simulation calculations of the compounds in PRT1 binding site were performed to report the results of anti-leishmanial and antimicrobial activities. Compounds 4a and 4b showed the highest anti-amastigote and anti-promastigote activities. Compound 4a revealed the highest antimicrobial activity against E. coli, P. aeruginosa, and C. albicans strains. In addition, compound 4c showed the highest activity against S. aureus. The fluoro, bromo, and nitro substituents in para-position of phenyl group at C4 of dihydropyridine and tetrahydropyrimidine moieties as well as the bulk and length of the chain linking to the ester moieties are essential for anti-leishmanial and anti-microbial activities of these derivatives. Low cytotoxicity was shown by most of derivatives against macrophages. The molecular docking studies were in agreement with in vitro assay. Moreover, hydrogen binds, RMSF, RMSD, and Rg, strongly showed the steady binding of 4a and 4b compounds in PRT1 active site.
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Affiliation(s)
- Mahdieh Khalilzadeh
- Department of Medicinal Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Sedigheh Saberi
- Department of Mycology and Parasitology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Ghazal Noori
- Department of Medicinal Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Mostafa Vaziri
- Department of Medicinal Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Saghi Sepehri
- Department of Medicinal Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran.
- Pharmaceutical Sciences Research Center, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Hamid Bakherad
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahsa Esmaeili-Fallah
- Department of Mycology and Parasitology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sahar Mirzayi
- Department of Medicinal Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Ghazaleh Farhadi
- Department of Medicinal Chemistry, School of Pharmacy, Ardabil University of Medical Sciences, Ardabil, Iran
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26
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Al-Dhafiri M, Alhajri A, Alwayel ZA, Alturaiki JA, Bu Izran SA, Alhammad FA, Aljumaiah RM. Cutaneous Leishmaniasis Prevalence and Clinical Overview: A Single Center Study from Saudi Arabia, Eastern Region, Al-Ahsa. Trop Med Infect Dis 2023; 8:507. [PMID: 38133439 PMCID: PMC10748161 DOI: 10.3390/tropicalmed8120507] [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: 10/03/2023] [Revised: 11/15/2023] [Accepted: 11/18/2023] [Indexed: 12/23/2023] Open
Abstract
Cutaneous leishmaniasis (CL) is a vector-borne parasitic disease that is transmitted via the bites of infected female sandflies. CL has been endemic in several countries worldwide for many decades, and numerous cases have been reported in Saudi Arabia, particularly across six regions; one of which is AL-Ahsa. Our research aimed to evaluate the epidemiological situation of CL among the patients in Al-Ahsa, Eastern region, Kingdom of Saudi Arabia, during the period from 2017 to 2023. The data were collected from the patients' registries and included 245 patients who were diagnosed with CL in Al-Ahsa, Saudi Arabia. Fewer than half of the cases (47.8%) were Saudi patients, with a significant number of them being males (84.5%). Over half of the cases (52.7%) were aged between 21 and 40 years, and about three-quarters (74.7%) of the cases resided in rural areas. Regarding the nature of the lesions, 38.4% of the cases had one lesion, which was mainly distributed on a lower extremity (62.0%) or an upper extremity (52.2%). A high percentage of the lesions (75.2%) were wet lesions and caused by L. major. Concerning risk factors, a greater number of patients (71.4%) had been in rural areas within the last three months. Additionally, more than half of the cases (54.3%) had close contact with rodents, followed by birds (28.2%), sheep (22.0%), dogs (16.3%), and other animals (1.2%). The results showed a low number of reported CL cases in 2020 and 2021, followed by a surge in 2022 and 2023. The study shows that cutaneous leishmaniasis is still a public health problem in Al-Ahsa and is primarily associated with rural areas.
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Affiliation(s)
- Mahdi Al-Dhafiri
- Department of Dermatology, King Faisal University, Al-Ahsa 31982, Saudi Arabia
| | - Abdulmohsen Alhajri
- Department of Dermatology, King Fahad Hospital, Al-Ahsa 31982, Saudi Arabia;
| | - Zahraa Ali Alwayel
- General Practitioner, The Ministry of Health, Al-Ahsa 31982, Saudi Arabia
| | | | - Shaima Ali Bu Izran
- Internal Medicine Resident, King Fahad Hospital, Al-Ahsa 31982, Saudi Arabia (R.M.A.)
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27
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Edirisinghe NM, Manamperi NH, Wanasinghe VS, Karunaweera ND. Unfolded protein response pathway in leishmaniasis: A review. Parasite Immunol 2023; 45:e13009. [PMID: 37571855 PMCID: PMC10660540 DOI: 10.1111/pim.13009] [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: 04/21/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023]
Abstract
Alteration in the physiological state of the endoplasmic reticulum (ER) leads to the specific response known as unfolded protein response (UPR) or ER stress response. The UPR is driven by three sensor proteins, namely: Inositol-Requiring Enzyme 1, Protein Kinase RNA-like ER kinase and Activating Transcription Factor 6 to restore ER homeostasis. Pathogenic infection can initiate UPR activation; some pathogens can subvert the UPR to promote their survival and replication. Many intracellular pathogens, including Leishmania, can interact and hijack ER for their survival and replication, triggering ER stress and subsequently ER stress response. This review aims to provide a comprehensive overview of the ER stress response in infections with the Leishmania species.
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28
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Yucesan B, Ozkan O, Tuncer S, Ocal Z. Molecular Detectıon of Canine Leishmaniasis in Northern Anatolia, Turkiye. IRANIAN JOURNAL OF PARASITOLOGY 2023; 18:483-493. [PMID: 38169529 PMCID: PMC10758073 DOI: 10.18502/ijpa.v18i4.14257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 04/08/2023] [Indexed: 01/05/2024]
Abstract
Background Canin leishmaniasis (CanL), mostly caused by Leishmania infantum, is one of the most important vector-borne diseases in dogs in the Mediterranean region. In this study, we aimed to determine the disease profile in this region by firstly making microscopic and then molecular analyzes in the samples taken from the dogs. Methods Overall, 112 whole blood samples taken from dogs for clinical applications by a veterinarian in Cankırı between December 2021 and November 2022 were used. After blood collection, both thin and thick drop blood smear preparations were prepared and evaluated for Giemsa staining. L. infantum was investigated by Real time-PCR (RT-PCR) method from all blood samples. Sequence analysis and phylogenetic tree study were performed on positive samples. Results Both microscopic and RT-PCR analyzes were performed. In both studies, 3 of the 112 samples were positive. Because of the sequence analysis, they were L. infantum. Sequence analysis was performed from the samples found 3 positive. The phylogenetic tree was drawn by making NCBI (National Center for Biotechnology) data entries of the positive samples (Accession numbers: OQ184728, OQ184729, OQ184730). Conclusion Dogs are important, as they are reservoir of this disease. In this study, 3 (2.7%) positive Leishmaniasis was detected in dogs in Cankırı. Ultimately, this should prompt discussion about new strategies going forward to combat infection caused by Leishmania.
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Affiliation(s)
- Banucicek Yucesan
- Department of Healthcare Management, Faculty of Health Science, Cankırı Karatekin University, Cankırı, Turkiye
| | - Ozcan Ozkan
- Department of Biology, Faculty of Sience, Cankırı Karatekin University, Çankırı, Turkiye
| | - Sinem Tuncer
- Department of Directorate of Microbiology, Reference Laboratories and Biological Products, Public Health General Directorate, Ministry of Health, Ankara, Turkiye
| | - Zekeriya Ocal
- Cankırı Municipality Animal Care and Rehabilitation Center for Diagnosis and Treatment, Çankırı, Turkiye
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29
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Martín-Montes Á, Jimenez-Falcao S, Gómez-Ruiz S, Marín C, Mendez-Arriaga JM. First-Row Transition 7-Oxo-5-phenyl-1,2,4-triazolo[1,5-a]pyrimidine Metal Complexes: Antiparasitic Activity and Release Studies. Pharmaceuticals (Basel) 2023; 16:1380. [PMID: 37895851 PMCID: PMC10610057 DOI: 10.3390/ph16101380] [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: 08/30/2023] [Revised: 09/21/2023] [Accepted: 09/26/2023] [Indexed: 10/29/2023] Open
Abstract
Leishmaniasis and Chagas disease are still considered neglected illnesses due to the lack of investment in research, despite the fact that almost one million new cases are reported every year. Four 7-oxo-5-phenyl-1,2,4-triazolo[1,5-a]pyrimidine (HftpO) first-row transition complexes (Cu, Co, Ni, Zn) have been studied for the first time in vitro against five different species of Leishmania spp. (L. infantum, L. braziliensis, L. donovani, L. peruviana and L. mexicana) as well as Trypanosoma cruzi, showing higher efficacy than the reference commercial drugs. UV and luminescence properties were also evaluated. As a proof of concept, anchoring of a model high-effective-metal complex as an antiparasitic agent on silica nanoparticles was carried out for the first time, and drug-release behaviour was evaluated, assessing this new approach for drug vehiculation.
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Affiliation(s)
- Álvaro Martín-Montes
- Departamento De Parasitología, Universidad De Granada, Avenida Fuentenueva, 18071 Granada, Spain;
| | - Sandra Jimenez-Falcao
- Organic Nanotechnology Lab, Departamento De Materiales Y Producción Aeroespacial E.T.S.I Aeronáutica Y Del Espacio, Universidad Politécnica De Madrid, 28040 Madrid, Spain;
| | - Santiago Gómez-Ruiz
- COMET-NANO Group, Departamento De Biología y Geología, Física Y Química Inorgánica, E.S.C.E.T., Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Spain;
| | - Clotilde Marín
- Departamento De Parasitología, Universidad De Granada, Avenida Fuentenueva, 18071 Granada, Spain;
| | - José M. Mendez-Arriaga
- COMET-NANO Group, Departamento De Biología y Geología, Física Y Química Inorgánica, E.S.C.E.T., Universidad Rey Juan Carlos, Calle Tulipán s/n, 28933 Móstoles, Spain;
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30
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Khandibharad S, Singh S. Immuno-metabolic signaling in leishmaniasis: insights gained from mathematical modeling. BIOINFORMATICS ADVANCES 2023; 3:vbad125. [PMID: 37799190 PMCID: PMC10548086 DOI: 10.1093/bioadv/vbad125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/27/2023] [Accepted: 09/12/2023] [Indexed: 10/07/2023]
Abstract
Motivation Leishmaniasis is a global concern especially in underdeveloped and developing subtropical and tropical regions. The extent of infectivity in host is majorly dependent on functional polarization of macrophages. Classically activated M1 macrophage can eliminate parasite through production of iNOS and alternatively activated M2 macrophages can promote parasite growth through by providing shelter and nutrients to parasite. The biological processes involved in immune signaling and metabolism of host and parasite might be responsible for deciding fate of parasite. Results Using systems biology approach, we constructed two mathematical models and inter-regulatory immune-metabolic networks of M1 and M2 state, through which we identified crucial components that are associated with these phenotypes. We also demonstrated how parasite may modulate M1 phenotype for its growth and proliferation and transition to M2 state. Through our previous findings as well as from recent findings we could identify SHP-1 as a key component in regulating the immune-metabolic characterization of M2 macrophage. By targeting SHP-1 at cellular level, it might be possible to modulate immuno-metabolic mechanism and thereby control parasite survival. Availability and implementation Mathematical modeling is implemented as a workflow and the models are deposited in BioModel database. FactoMineR is available at: https://github.com/cran/FactoMineR/tree/master.
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Affiliation(s)
- Shweta Khandibharad
- Systems Medicine Laboratory, National Centre for Cell Science, NCCS Complex, SPPU Campus, Pune 411007, India
| | - Shailza Singh
- Systems Medicine Laboratory, National Centre for Cell Science, NCCS Complex, SPPU Campus, Pune 411007, India
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Henriquez-Figuereo A, Alcon M, Moreno E, Sanmartín C, Espuelas S, Lucio HD, Jiménez-Ruiz A, Plano D. Next generation of selenocyanate and diselenides with upgraded leishmanicidal activity. Bioorg Chem 2023; 138:106624. [PMID: 37295238 DOI: 10.1016/j.bioorg.2023.106624] [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: 03/28/2023] [Revised: 05/08/2023] [Accepted: 05/21/2023] [Indexed: 06/12/2023]
Abstract
Nowadays, leishmaniasis is still treated with outdated drugs that present several obstacles related to their high toxicity, long duration, parenteral administration, high costs and drug resistance. Therefore, there is an urgent demand for safer and more effective novel drugs. Previous studies indicated that selenium compounds are promising derivatives for innovative therapy in leishmaniasis treatment. With this background, a new library of 20 selenocyanate and diselenide derivatives were designed based on structural features present in the leishmanicidal drug miltefosine. Compounds were initially screened against promastigotes of L. major and L. infantum and their cytotoxicity was evaluated in THP-1 cells. Compounds B8 and B9 were the most potent and less cytotoxic and were further screened for the intracellular back transformation assay. The results obtained revealed that B8 and B9 showed EC50 values of 7.7 µM and 5.7 µM, respectively, in L. major amastigotes, while they presented values of 6.0 µM and 7.4 µM, respectively, against L. infantum amastigotes. Furthermore, they exerted high selectivity (60 < SI > 70) towards bone marrow-derived macrophages. Finally, these compounds exhibited higher TryR inhibitory activity than mepacrine (IC50 7.6 and 9.2 µM, respectively), and induced nitric oxide (NO) and reactive oxygen species (ROS) production in macrophages. These results suggest that the compounds B8 and B9 could not only exert a direct leishmanicidal activity against the parasite but also present an indirect action by activating the microbicidal arsenal of the macrophage. Overall, these new generation of diselenides could constitute promising leishmanicidal drug candidates for further studies.
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Affiliation(s)
- Andreina Henriquez-Figuereo
- University of Navarra, Faculty of Pharmacy and Nutrition, Department of Pharmaceutical Technology and Chemistry, Pamplona, Spain; Institute of Tropical Health, University of Navarra, ISTUN, Pamplona, Spain
| | - Mercedes Alcon
- Universidad de Alcalá, Departamento de Biología de Sistemas, 28805 Alcalá de Henares, Madrid, Spain
| | - Esther Moreno
- University of Navarra, Faculty of Pharmacy and Nutrition, Department of Pharmaceutical Technology and Chemistry, Pamplona, Spain; Institute of Tropical Health, University of Navarra, ISTUN, Pamplona, Spain; IdisNA, Navarra Institute for Health Research, Pamplona, Spain.
| | - Carmen Sanmartín
- University of Navarra, Faculty of Pharmacy and Nutrition, Department of Pharmaceutical Technology and Chemistry, Pamplona, Spain; Institute of Tropical Health, University of Navarra, ISTUN, Pamplona, Spain; IdisNA, Navarra Institute for Health Research, Pamplona, Spain.
| | - Socorro Espuelas
- University of Navarra, Faculty of Pharmacy and Nutrition, Department of Pharmaceutical Technology and Chemistry, Pamplona, Spain; Institute of Tropical Health, University of Navarra, ISTUN, Pamplona, Spain; IdisNA, Navarra Institute for Health Research, Pamplona, Spain
| | - Héctor de Lucio
- Universidad de Alcalá, Departamento de Biología de Sistemas, 28805 Alcalá de Henares, Madrid, Spain
| | - Antonio Jiménez-Ruiz
- Universidad de Alcalá, Departamento de Biología de Sistemas, 28805 Alcalá de Henares, Madrid, Spain
| | - Daniel Plano
- University of Navarra, Faculty of Pharmacy and Nutrition, Department of Pharmaceutical Technology and Chemistry, Pamplona, Spain; Institute of Tropical Health, University of Navarra, ISTUN, Pamplona, Spain; IdisNA, Navarra Institute for Health Research, Pamplona, Spain
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Azami-Conesa I, Pérez-Moreno P, Matas Méndez P, Sansano-Maestre J, González F, Mateo Barrientos M, Gómez-Muñoz MT. Occurrence of Leishmania infantum in Wild Mammals Admitted to Recovery Centers in Spain. Pathogens 2023; 12:1048. [PMID: 37624008 PMCID: PMC10458632 DOI: 10.3390/pathogens12081048] [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: 07/07/2023] [Revised: 08/11/2023] [Accepted: 08/14/2023] [Indexed: 08/26/2023] Open
Abstract
Zoonotic leishmaniasis caused by Leishmania infantum is distributed worldwide and affects humans and domestic and wild mammals. In Europe, specifically in the Mediterranean basin, leishmaniasis is endemic due to the concurrence of the phlebotomine vectors and reservoir mammals, including carnivorous wildlife species and other less studied wild species. In this article, spleen, skin, and eye or oral swabs taken from 134 wild mammals admitted to five wildlife recovery centers in Spain were used. PCR employing fragments of the Repeat region, ITS1, and SSUrRNA were used for detection, and positive samples were processed for sequencing. L. infantum was detected in three out of the nine species analyzed, including European hedgehog, European badger, and red squirrel, with percentages ranging from 11.53 to 35.71%, depending on the species. Most of the species showed higher percentages of positivity in spleen samples than in skin samples. A small number of animals from the remaining six species tested negative, including Algerian hedgehog, stone marten, least weasel, garden dormouse, western polecat, and Egyptian mongoose. Hedgehogs and badgers are good candidates for consideration as epidemiological sentinels and pose a higher risk as potential reservoirs of leishmaniasis based on their percentage of infection and wide distribution.
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Affiliation(s)
- Iris Azami-Conesa
- Department of Animal Health, Faculty of Veterinary Sciences, Complutense University of Madrid, 28040 Madrid, Spain; (I.A.-C.); (P.P.-M.)
- Department of Health Sciences, Faculty of Biomedical and Health Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670 Madrid, Spain
| | - Paula Pérez-Moreno
- Department of Animal Health, Faculty of Veterinary Sciences, Complutense University of Madrid, 28040 Madrid, Spain; (I.A.-C.); (P.P.-M.)
| | - Pablo Matas Méndez
- Facultad de Veterinaria, Universidad Alfonso X el Sabio, Villanueva de la Cañada, 28691 Madrid, Spain;
| | - Jose Sansano-Maestre
- Department of Animal Health and Public Health, Catholic University of Valencia, 46002 Valencia, Spain;
| | - Fernando González
- GREFA (Grupo de Rehabilitación de la Fauna Autóctona y su Hábitat), Monte del Pilar, 28220 Madrid, Spain;
- Departmental Section of Pharmacology and Toxicology, Faculty of Veterinary Science, University Complutense of Madrid, 28040 Madrid, Spain
| | - Marta Mateo Barrientos
- Department of Microbiology and Parasitology, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - María Teresa Gómez-Muñoz
- Department of Animal Health, Faculty of Veterinary Sciences, Complutense University of Madrid, 28040 Madrid, Spain; (I.A.-C.); (P.P.-M.)
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Nouroozi Kouh T, Hoghooghi Rad N, Navidpour S, Shirali S, Esmailnia K. Molecular Identification of Cutaneous Leishmaniasis Vectors in Alborz Province, North of Iran. ARCHIVES OF RAZI INSTITUTE 2023; 78:1277-1284. [PMID: 38226373 PMCID: PMC10787922 DOI: 10.32592/ari.2023.78.4.1277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 07/25/2023] [Indexed: 01/17/2024]
Abstract
Cutaneous leishmaniasis (CL) is a vector-borne disease widely distributed in tropical and subtropical areas of North and South America, Europe, Asia, and Africa. Considering the increasing number of CL cases in recent years and the fact that no study has been conducted to identify CL fauna and vectors in Alborz province, this study was carried out to identify sand flies and CL vectors in this region. Sand flies were collected from August to October 2021 from plain and mountainous indoor and outdoor areas of the region using sticky paper traps and were detected morphologically. DNA was extracted from the midguts of female sand flies. In this study, 1157 sand flies were collected and identified. The number of sand flies caught from indoor and outdoor places was 367 (31.72%) and 790 (68.28%), respectively. Overall, six species of flies were of the genus Phlebotomus (Raynal, 1937), including Phlebotomus papatasi (P. papatasi, 695 [60.07%]; Scopoli, 1786), P. kandelakii (13 [1.12%]; Shchurenkova, 1926), P. sergenti (232 [20.05%]; Parrot, 1917), P. major (14 [1.21%]; Annandale, 1910), P. caucasicus (4 [0.35%]; Marzinowsky, 1917), P. alexandri (18 [1.56%]; Alexandri Sinton, 1920), and four were of the genus Sergentomyia (Artemiev, 1978), including Sergentomyia tiberiadis (109 [9.42%]; Adler, Theodor & Lourie, 1930), Sergentomyia baghdadis (53 [4.58%]), Sergentomyia sintoni (14 [1.21%]; Sintoni Pringle, 1933), Sergentomyia clydei (5 [0.43%]). P. papatasi spp. were dominant in indoor and outdoor places, with a prevalence of 695 (60.07%). The Leishmania major (L. major) gene was identified in five samples of P. papatasi spp. This suggests that P. papatasi is the potential vector spp. in the study area. Moreover, L. major was confirmed as the aetiological agent of CL cases in Alborz province. The identification of vectors and parasite spp. is very important for the treatment and operational planning of disease vectors.
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Affiliation(s)
- T Nouroozi Kouh
- Department of Pathobiology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - N Hoghooghi Rad
- Department of Pathobiology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Sh Navidpour
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - S Shirali
- Department of Pathobiology, Science and Research Branch, Islamic Azad University, Tehran, Iran
- Department of Biotechnology, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
| | - K Esmailnia
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
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Banerjee S, Datta R. Localized Leishmania major infection disrupts systemic iron homeostasis that can be controlled by oral iron supplementation. J Biol Chem 2023; 299:105064. [PMID: 37468101 PMCID: PMC10448173 DOI: 10.1016/j.jbc.2023.105064] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 07/08/2023] [Accepted: 07/11/2023] [Indexed: 07/21/2023] Open
Abstract
Leishmania parasites are heavily dependent on efficient iron acquisition from a tightly regulated host iron pool for survival and virulence. Prior studies uncovered multiple strategies adopted by the parasite to hijack the iron-regulatory network of macrophages. Despite these extensive studies with infected macrophages, there is limited knowledge of the effect of Leishmania infection on systemic iron homeostasis. This issue is particularly relevant for Leishmania major, which causes localized skin infection with minimal lymphatic spread. We show for the first time that L. major infection in the mouse footpad induced influx of iron at the site of infection through blood with simultaneous upregulation of transferrin receptor 1 and downregulation of phagolysosomal iron exporter Nramp1 expression in the footpad tissue. Interestingly, localized L. major infection had far-reaching effects beyond the infection site triggering anemia-like symptoms. This was evident from depleted physiological iron stores from the liver and bone marrow as well as reduced hemoglobin levels and deformed erythrocytes. The infected mice also developed splenomegaly with signs of splenic stress erythropoiesis as indicated by upregulation of several erythroid-related genes. These observations prompted us to provide oral iron supplementations to the L. major-infected mice, which resulted in a drastic reduction of the parasite load and restoration of iron homeostasis.
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Affiliation(s)
- Sourav Banerjee
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, India
| | - Rupak Datta
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur, West Bengal, India.
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Berhanu A, Dugassa S, Maru M, Animut A, Erko B, Hailu A, Gebresilassie A. Cutaneous leishmaniasis in Kutaber District, Ethiopia: Prevalence, sand fly fauna and community knowledge, attitude and practices. Heliyon 2023; 9:e18286. [PMID: 37520994 PMCID: PMC10382297 DOI: 10.1016/j.heliyon.2023.e18286] [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: 02/24/2022] [Revised: 07/11/2023] [Accepted: 07/13/2023] [Indexed: 08/01/2023] Open
Abstract
Background Cutaneous leishmaniasis (CL) affects 25% of the population living in the highlands of Ethiopia. CL intervention has not decreased the number of leishmaniasis patients. A cross-sectional study was conducted to determine CL prevalence, community's knowledge, attitude and practices (KAP), and the sand fly fauna in Kutaber district, northeast Ethiopia. Methods A retrospective, community-based cross-sectional study was conducted in Boru Meda Hospital from December 2014-March 2021 to study CL prevalence of Kutaber district. A Pre-tested, well-structured questionnaire was used to collect data on the participants' socio-demographic characteristics, KAP towards CL and knowledge about sand fly vectors. Chi-square test and logistic regression analysis were used in the study, and data were analyzed using SPSS version 23 (p < 0.05). Results A total of 10,002 (14.02%), of which 71,325 samples were confirmed as positive for CL. The infection rate of CL in females (7.1%) was a little bit higher than males (7.0%). More cases were recorded among 15-29 age category. The study also revealed that 77.1% of the respondents had poor knowledge about CL treatment, prevention, clinical presentation and disease transmission. Farmers tended to have poorer knowledge about sand flies than non-workers and students (32.7 vs. 35 and 44.1%; P = 0.049). Housewives had poorer knowledge about sand flies than farmers and workers (22.2 vs. 32.7 and 33.3%; P = 0.023). Phlebotomus longipes comprised the highest composition (80%) of the sand fly species identified in Kutaber district. Conclusions The data showed that the community had poor knowledge about CL, vector, and transmission mode. CL preventive measures were prevalent, implying the need to raise CL awareness. Phlebotomus longipes was identified as the most dominant sand fly species which accounted for CL. The findings can be used in developing an effective control strategy to reduce CL transmission in the study area and elsewhere in Ethiopia.
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Affiliation(s)
- Abib Berhanu
- Addis Ababa University, College of Natural and Computational Sciences, Department of Zoological Sciences, Insect Science Stream, Addis Ababa, Ethiopia
| | - Sisay Dugassa
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Ethiopia
| | - Minwuyelet Maru
- Health Research and Technology Transfer Directorate, Amhara Public Health Institute, Dessie Branch, Ethiopia
| | - Abebe Animut
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Ethiopia
| | - Berhanu Erko
- Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Ethiopia
| | - Asrat Hailu
- College of Health Sciences, Addis Ababa University, Ethiopia
| | - Araya Gebresilassie
- Addis Ababa University, College of Natural and Computational Sciences, Department of Zoological Sciences, Insect Science Stream, Addis Ababa, Ethiopia
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Gerasimov ES, Novozhilova TS, Zimmer SL, Yurchenko V. Kinetoplast Genome of Leishmania spp. Is under Strong Purifying Selection. Trop Med Infect Dis 2023; 8:384. [PMID: 37624322 PMCID: PMC10458658 DOI: 10.3390/tropicalmed8080384] [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: 06/28/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/26/2023] Open
Abstract
Instability is an intriguing characteristic of many protist genomes, and trypanosomatids are not an exception in this respect. Some regions of trypanosomatid genomes evolve fast. For instance, the trypanosomatid mitochondrial (kinetoplast) genome consists of fairly conserved maxicircle and minicircle molecules that can, nevertheless, possess high nucleotide substitution rates between closely related strains. Recent experiments have demonstrated that rapid laboratory evolution can result in the non-functionality of multiple genes of kinetoplast genomes due to the accumulation of mutations or loss of critical genomic components. An example of a loss of critical components is the reported loss of entire minicircle classes in Leishmania tarentolae during laboratory cultivation, which results in an inability to generate some correctly encoded genes. In the current work, we estimated the evolutionary rates of mitochondrial and nuclear genome regions of multiple natural Leishmania spp. We analyzed synonymous and non-synonymous substitutions and, rather unexpectedly, found that the coding regions of kinetoplast maxicircles are among the most variable regions of both genomes. In addition, we demonstrate that synonymous substitutions greatly predominate among maxicircle coding regions and that most maxicircle genes show signs of purifying selection. These results imply that maxicircles in natural Leishmania populations remain functional despite their high mutation rate.
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Affiliation(s)
- Evgeny S. Gerasimov
- Department of Molecular Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
- Institute for Information Transmission Problems, Russian Academy of Sciences, 127051 Moscow, Russia
| | - Tatiana S. Novozhilova
- Department of Molecular Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Sara L. Zimmer
- Department of Biomedical Sciences, University of Minnesota Medical School, Duluth Campus, Duluth, MN 55812, USA
| | - Vyacheslav Yurchenko
- Life Science Research Centre, Faculty of Science, University of Ostrava, 710 00 Ostrava, Czech Republic
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Saidi N, Blaizot R, Prévot G, Aoun K, Demar M, Cazenave PA, Bouratbine A, Pied S. Clinical and immunological spectra of human cutaneous leishmaniasis in North Africa and French Guiana. Front Immunol 2023; 14:1134020. [PMID: 37575260 PMCID: PMC10421664 DOI: 10.3389/fimmu.2023.1134020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/10/2023] [Indexed: 08/15/2023] Open
Abstract
Cutaneous leishmaniasis (CL) caused by infection with the parasite Leishmania exhibits a large spectrum of clinical manifestations ranging from single healing to severe chronic lesions with the manifestation of resistance or not to treatment. Depending on the specie and multiple environmental parameters, the evolution of lesions is determined by a complex interaction between parasite factors and the early immune responses triggered, including innate and adaptive mechanisms. Moreover, lesion resolution requires parasite control as well as modulation of the pathologic local inflammation responses and the initiation of wound healing responses. Here, we have summarized recent advances in understanding the in situ immune response to cutaneous leishmaniasis: i) in North Africa caused by Leishmania (L.) major, L. tropica, and L. infantum, which caused in most cases localized autoresolutives forms, and ii) in French Guiana resulting from L. guyanensis and L. braziliensis, two of the most prevalent strains that may induce potentially mucosal forms of the disease. This review will allow a better understanding of local immune parameters, including cellular and cytokines release in the lesion, that controls infection and/or protect against the pathogenesis in new world compared to old world CL.
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Affiliation(s)
- Nasreddine Saidi
- Univ. Lille, Univ. French Guiana, CNRS UMR 9017-INSERM U1019, Center for Infection and Immunity of Lille-CIIL, Institut Pasteur de Lille, Lille, France
- Laboratoire de Recherche, LR 16-IPT-06, Parasitoses Médicales, Biotechnologies et Biomolécules, Institut Pasteur de Tunis, Université Tunis El-Manar, Tunis, Tunisia
| | - Romain Blaizot
- Univ. Lille, Univ. French Guiana, CNRS UMR 9017-INSERM U1019, Center for Infection and Immunity of Lille-CIIL, Institut Pasteur de Lille, Lille, France
- Centre National de Référence des Leishmanioses, Laboratoire Associé, Hôpital Andrée Rosemon, Cayenne, French Guiana, France
- Service de Dermatologie, Hôpital de Cayenne, Cayenne, French Guiana, France
| | - Ghislaine Prévot
- Univ. Lille, Univ. French Guiana, CNRS UMR 9017-INSERM U1019, Center for Infection and Immunity of Lille-CIIL, Institut Pasteur de Lille, Lille, France
| | - Karim Aoun
- Laboratoire de Recherche, LR 16-IPT-06, Parasitoses Médicales, Biotechnologies et Biomolécules, Institut Pasteur de Tunis, Université Tunis El-Manar, Tunis, Tunisia
- Service de Parasitologie-Mycologie, Institut Pasteur de Tunis, Tunis, Tunisia
| | - Magalie Demar
- Univ. Lille, Univ. French Guiana, CNRS UMR 9017-INSERM U1019, Center for Infection and Immunity of Lille-CIIL, Institut Pasteur de Lille, Lille, France
- Centre National de Référence des Leishmanioses, Laboratoire Associé, Hôpital Andrée Rosemon, Cayenne, French Guiana, France
- Service de Dermatologie, Hôpital de Cayenne, Cayenne, French Guiana, France
| | - Pierre André Cazenave
- Univ. Lille, Univ. French Guiana, CNRS UMR 9017-INSERM U1019, Center for Infection and Immunity of Lille-CIIL, Institut Pasteur de Lille, Lille, France
| | - Aida Bouratbine
- Laboratoire de Recherche, LR 16-IPT-06, Parasitoses Médicales, Biotechnologies et Biomolécules, Institut Pasteur de Tunis, Université Tunis El-Manar, Tunis, Tunisia
- Service de Parasitologie-Mycologie, Institut Pasteur de Tunis, Tunis, Tunisia
| | - Sylviane Pied
- Univ. Lille, Univ. French Guiana, CNRS UMR 9017-INSERM U1019, Center for Infection and Immunity of Lille-CIIL, Institut Pasteur de Lille, Lille, France
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Bauer IL. The oral repellent - science fiction or common sense? Insects, vector-borne diseases, failing strategies, and a bold proposition. Trop Dis Travel Med Vaccines 2023; 9:7. [PMID: 37381000 DOI: 10.1186/s40794-023-00195-9] [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: 12/21/2022] [Accepted: 06/09/2023] [Indexed: 06/30/2023] Open
Abstract
Over the last decades, unimaginable amounts of money have gone into research and development of vector control measures, repellents, treatment, and vaccines for vector borne diseases. Technological progress and scientific breakthroughs allowed for ever more sophisticated and futuristic strategies. Yet, each year, millions of people still die or suffer from potentially serious consequences of malaria or dengue to more recent infections, such as zika or chikungunya, or of debilitating consequences of neglected tropical diseases. This does not seem value for money. In addition, all current vector control strategies and personal protection methods have shortcomings, some serious, that are either destructive to non-target species or unsatisfactory in their effectiveness. On the other hand, the rapid decline in insect populations and their predators reflects decades-long aggressive and indiscriminate vector control. This major disruption of biodiversity has an impact on human life not anticipated by the well-meaning killing of invertebrates. The objective of this paper is to re-examine current control methods, their effectiveness, their impact on biodiversity, human and animal health, and to call for scientific courage in the pursuit of fresh ideas. This paper brings together topics that are usually presented in isolation, thereby missing important links that offer potential solutions to long-standing problems in global health. First, it serves as a reminder of the importance of insects to human life and discusses the few that play a role in transmitting disease. Next, it examines critically the many currently employed vector control strategies and personal protection methods. Finally, based on new insights into insect chemo-sensation and attractants, this perspective makes a case for revisiting a previously abandoned idea, the oral repellent, and its use via currently successful methods of mass-application. The call is out for focused research to provide a powerful tool for public health, tropical medicine, and travel medicine.
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Affiliation(s)
- Irmgard L Bauer
- College of Healthcare Sciences, Academy - Tropical Health and Medicine, James Cook University, Townsville, QLD, 4811, Australia.
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Cantanhêde LM, Cupolillo E. Leishmania (Viannia) naiffi Lainson & Shaw 1989. Parasit Vectors 2023; 16:194. [PMID: 37291682 PMCID: PMC10251559 DOI: 10.1186/s13071-023-05814-0] [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: 03/31/2023] [Accepted: 05/18/2023] [Indexed: 06/10/2023] Open
Abstract
Just over 30 years ago, a new species of Leishmania of the subgenus Leishmania (Viannia) was described infecting the armadillo Dasypus novemcinctus; then, a report of human infection followed. From the Brazilian Amazon and apparently restricted to this region and its close borders, Leishmania (Viannia) naiffi has been characterized as a species that grows easily in axenic culture medium and causes few to no lesions after inoculation in experimental animal models. Results in the last decade indicate the occurrence of L. naiffi in vectors and human infections, including a report of therapeutic failure possibly associated with Leishmania RNA virus 1. Overall, such accounts suggest that the parasite is more dispersed and the disease less self-healing than previously expected.
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Affiliation(s)
- Lilian Motta Cantanhêde
- Leishmaniasis Research Laboratory, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental, INCT EpiAmO, Porto Velho, Brazil
| | - Elisa Cupolillo
- Leishmaniasis Research Laboratory, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, Brazil
- Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental, INCT EpiAmO, Porto Velho, Brazil
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Grifferty G, Shirley H, O'Brien K, Hirsch JL, Orriols AM, Amechi KL, Lo J, Chanda N, El Hamzaoui S, Kahn J, Yap SV, Watson KE, Curran C, Atef AbdelAlim A, Bose N, Cilfone AL, Wamai R. The leishmaniases in Kenya: A scoping review. PLoS Negl Trop Dis 2023; 17:e0011358. [PMID: 37262045 DOI: 10.1371/journal.pntd.0011358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 05/07/2023] [Indexed: 06/03/2023] Open
Abstract
BACKGROUND The leishmaniases are a group of four vector-borne neglected tropical diseases caused by 20 species of protozoan parasites of the genus Leishmania and transmitted through a bite of infected female phlebotomine sandflies. Endemic in over 100 countries, the four types of leishmaniasis-visceral leishmaniasis (VL) (known as kala-azar), cutaneous leishmaniasis (CL), mucocutaneous leishmaniasis (MCL), and post-kala-azar dermal leishmaniasis (PKDL)-put 1.6 billion people at risk. In Kenya, the extent of leishmaniasis research has not yet been systematically described. This knowledge is instrumental in identifying existing research gaps and designing appropriate interventions for diagnosis, treatment, and elimination. METHODOLOGY/PRINCIPAL FINDINGS This study used the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) methodology to determine the state of leishmaniases research in Kenya and identify research gaps. We searched seven online databases to identify articles published until January 2022 covering VL, CL, MCL, and/or PKDL in Kenya. A total of 7,486 articles were found, of which 479 underwent full-text screening, and 269 met our eligibility criteria. Most articles covered VL only (n = 141, 52%), were published between 1980 and 1994 (n = 108, 39%), and focused on the theme of "vectors" (n = 92, 34%). The most prevalent study types were "epidemiological research" (n = 88, 33%) tied with "clinical research" (n = 88, 33%), then "basic science research" (n = 49, 18%) and "secondary research" (n = 44, 16%). CONCLUSION/SIGNIFICANCE While some studies still provide useful guidance today, most leishmaniasis research in Kenya needs to be updated and focused on prevention, co-infections, health systems/policy, and general topics, as these themes combined comprised less than 4% of published articles. Our findings also indicate minimal research on MCL (n = 1, <1%) and PKDL (n = 2, 1%). We urge researchers to renew and expand their focus on these neglected diseases in Kenya.
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Affiliation(s)
- Grace Grifferty
- Department of Cellular and Molecular Biology, College of Science, Northeastern University, Boston, Massachusetts, United States of America
- African Centre for Community Investment in Health, Nginyang, Baringo County, Kenya
| | - Hugh Shirley
- African Centre for Community Investment in Health, Nginyang, Baringo County, Kenya
- Harvard Medical School, Boston, Massachusetts, United States of America
| | - Katherine O'Brien
- African Centre for Community Investment in Health, Nginyang, Baringo County, Kenya
- Department of Health Sciences, Bouvé College of Health Sciences, Northeastern University, Boston, Massachusetts, United States of America
| | - Jason L Hirsch
- The Ohio State University College of Medicine, Columbus, Ohio, United States of America
| | - Adrienne M Orriols
- African Centre for Community Investment in Health, Nginyang, Baringo County, Kenya
- University of Florida College of Medicine, Gainesville, Florida, United States of America
| | - Kiira Lani Amechi
- Department of International Affairs, College of Social Sciences and Humanities, Northeastern University, Boston, Massachusetts, United States of America
| | - Joshua Lo
- Department of Mathematics and Department of Psychology, College of Science, Northeastern University, Boston, Massachusetts, United States of America
| | - Neeharika Chanda
- Department of Cellular and Molecular Biology, College of Science, Northeastern University, Boston, Massachusetts, United States of America
| | - Sarra El Hamzaoui
- Department of Health Sciences, Bouvé College of Health Sciences, Northeastern University, Boston, Massachusetts, United States of America
| | - Jorja Kahn
- Department of Behavioral Neuroscience, College of Science, Northeastern University, Boston, Massachusetts, United States of America
| | - Samantha V Yap
- Department of Biology, College of Science, Northeastern University, Boston, Massachusetts, United States of America
| | - Kyleigh E Watson
- Department of Health Sciences, Bouvé College of Health Sciences, Northeastern University, Boston, Massachusetts, United States of America
| | - Christina Curran
- Department of Biochemistry, College of Science, Northeastern University, Boston, Massachusetts, United States of America
| | - Amina Atef AbdelAlim
- Department of Biology, College of Science, Northeastern University, Boston, Massachusetts, United States of America
| | - Neeloy Bose
- Department of Bioengineering, College of Engineering, Northeastern University, Boston, Massachusetts, United States of America
| | - Alissa Link Cilfone
- Northeastern University Library, Northeastern University, Boston, Massachusetts, United States of America
| | - Richard Wamai
- African Centre for Community Investment in Health, Nginyang, Baringo County, Kenya
- Department of Cultures, Societies and Global Studies, College of Social Sciences and Humanities, Integrated Initiative for Global Health, Northeastern University, Boston, Massachusetts, United States of America
- Department of Global and Public Health, University of Nairobi, Nairobi, Kenya
- Nigerian Institute of Medical Research, Federal Ministry of Health, Lagos, Nigeria
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Fayaz S, Raz A, Bahrami F, Fard-Esfahani P, Parvizi P, Ajdary S. Molecular identification of Phlebotomus kandelakii apyrase and assessment of the immunogenicity of its recombinant protein in BALB/c mice. Sci Rep 2023; 13:8766. [PMID: 37253833 DOI: 10.1038/s41598-023-36037-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 05/28/2023] [Indexed: 06/01/2023] Open
Abstract
Sand fly salivary proteins have immunomodulatory and anti-inflammatory features; hence, they are proven to perform important roles in the early establishment of Leishmania parasite in the vertebrate host. Among them, salivary apyrase with anti-hemostatic properties has a crucial role during the blood meal process. In the present study, a Genome-Walking method was used to characterize a full-length nucleotide sequence of Phlebotomus (P.) kandelakii apyrase (Pkapy). Bioinformatics analyses revealed that Pkapy is a ~ 36 kDa stable and hydrophilic protein that belongs to the Cimex family of apyrases. Moreover, recombinant proteins of Pkapy and P. papatasi apyrase (Ppapy) were over-expressed in Escherichia coli BL2 (DE3) and their antigenicity in BALB/c mice was evaluated. Dot-blot and ELISA results indicated that both recombinant apyrases could induce antibodies in BALB/c. Moreover, a partial cross-reactivity between Pkapy and Ppapy was found. In vitro stimulation of splenocytes from immunized mice with the recombinant proteins indicated cross-reactive T cell proliferative responses. Cytokine analysis revealed significant production of IFN-γ (p < 0.001) and IL-10 (p < 0.01) in response to Pkapy. In conclusion, the full-length nucleotide sequence and molecular characteristics of Pkapy were identified for the first time. Immunologic analyses indicated that Pkapy and Ppapy are immunogenic in BALB/c mice and show partial cross-reactive responses. The immunity to Pkapy was found to be a Th1-dominant response that highlights its potential as a component for an anti-Leishmania vaccine.
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Affiliation(s)
- Shima Fayaz
- Department of Immunology, Pasteur Institute of Iran, Tehran, Iran
- Department of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
| | - Abbasali Raz
- Malaria and Vector Research Group (MVRG), Biotechnology Research Center (BRC), Pasteur Institute of Iran, Tehran, Iran
| | - Fariborz Bahrami
- Department of Immunology, Pasteur Institute of Iran, Tehran, Iran
| | | | - Parviz Parvizi
- Department of Parasitology, Pasteur Institute of Iran, Tehran, Iran
| | - Soheila Ajdary
- Department of Immunology, Pasteur Institute of Iran, Tehran, Iran.
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Firouraghi N, Bergquist R, Fatima M, Mohammadi A, Hamer DH, Shirzadi MR, Kiani B. High-risk spatiotemporal patterns of cutaneous leishmaniasis: a nationwide study in Iran from 2011 to 2020. Infect Dis Poverty 2023; 12:49. [PMID: 37189157 PMCID: PMC10184363 DOI: 10.1186/s40249-023-01103-1] [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: 11/16/2022] [Accepted: 05/05/2023] [Indexed: 05/17/2023] Open
Abstract
BACKGROUND Cutaneous leishmaniasis (CL) is a wide-reaching infection of major public health concern. Iran is one of the six most endemic countries in the world. This study aims to provide a spatiotemporal visualization of CL cases in Iran at the county level from 2011 to 2020, detecting high-risk zones, while also noting the movement of high-risk clusters. METHODS On the basis of clinical observations and parasitological tests, data of 154,378 diagnosed patients were obtained from the Iran Ministry of Health and Medical Education. Utilizing spatial scan statistics, we investigated the disease's purely temporal, purely spatial, spatial variation in temporal trends and spatiotemporal patterns. At P = 0.05 level, the null hypothesis was rejected in every instance. RESULTS In general, the number of new CL cases decreased over the course of the 9-year research period. From 2011 to 2020, a regular seasonal pattern, with peaks in the fall and troughs in the spring, was found. The period of September-February of 2014-2015 was found to hold the highest risk in terms of CL incidence rate in the whole country [relative risk (RR) = 2.24, P < 0.001)]. In terms of location, six significant high-risk CL clusters covering 40.6% of the total area of the country were observed, with the RR ranging from 1.87 to 9.69. In addition, spatial variation in the temporal trend analysis found 11 clusters as potential high-risk areas that highlighted certain regions with an increasing tendency. Finally, five space-time clusters were found. The geographical displacement and spread of the disease followed a moving pattern over the 9-year study period affecting many regions of the country. CONCLUSIONS Our study has revealed significant regional, temporal, and spatiotemporal patterns of CL distribution in Iran. Over the years, there have been multiple shifts in spatiotemporal clusters, encompassing many different parts of the country from 2011 to 2020. The results reveal the formation of clusters across counties that cover certain parts of provinces, indicating the importance of conducting spatiotemporal analyses at the county level for studies that encompass entire countries. Such analyses, at a finer geographical scale, such as county level, might provide more precise results than analyses at the scale of the province.
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Affiliation(s)
- Neda Firouraghi
- Department of Medical Informatics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Robert Bergquist
- Ingerod, Brastad, Sweden
- Formerly with the UNICEF/UNDP/World Bank/WHO Special Program for Research and Training in Tropical Diseases, World Health Organization, Geneva, Switzerland
| | - Munazza Fatima
- Department of Geography, The Islamia University of Bahawalpur, Bahawalpur, Punjab, Pakistan
| | - Alireza Mohammadi
- Department of Geography and Urban Planning, Faculty of Social Sciences, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Davidson H Hamer
- Department of Global Health, Boston University School of Public Health, Boston, MA, USA
- Section of Infectious Diseases, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Mohammad Reza Shirzadi
- Center for Disease Control and Prevention (CDC), Iran Ministry of Health & Medical Education, Tehran, Iran
| | - Behzad Kiani
- Centre de Recherche en Santé Publique, Université de Montréal, 7101, Avenue du Parc, Montréal, Canada
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Almeida FS, Vanderley SER, Comberlang FC, Andrade AGD, Cavalcante-Silva LHA, Silva EDS, Palmeira PHDS, Amaral IPGD, Keesen TSL. Leishmaniasis: Immune Cells Crosstalk in Macrophage Polarization. Trop Med Infect Dis 2023; 8:tropicalmed8050276. [PMID: 37235324 DOI: 10.3390/tropicalmed8050276] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
Leishmaniasis is a complex infectious parasitic disease caused by protozoa of the genus Leishmania, belonging to a group of neglected tropical diseases. It establishes significant global health challenges, particularly in socio-economically disadvantaged regions. Macrophages, as innate immune cells, play a crucial role in initiating the inflammatory response against the pathogens responsible for this disease. Macrophage polarization, the process of differentiating macrophages into pro-inflammatory (M1) or anti-inflammatory (M2) phenotypes, is essential for the immune response in leishmaniasis. The M1 phenotype is associated with resistance to Leishmania infection, while the M2 phenotype is predominant in susceptible environments. Notably, various immune cells, including T cells, play a significant role in modulating macrophage polarization by releasing cytokines that influence macrophage maturation and function. Furthermore, other immune cells can also impact macrophage polarization in a T-cell-independent manner. Therefore, this review comprehensively examines macrophage polarization's role in leishmaniasis and other immune cells' potential involvement in this intricate process.
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Affiliation(s)
- Fernanda Silva Almeida
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Shayenne Eduarda Ramos Vanderley
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Fernando Cézar Comberlang
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Arthur Gomes de Andrade
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Luiz Henrique Agra Cavalcante-Silva
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Edson Dos Santos Silva
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Pedro Henrique de Sousa Palmeira
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Ian P G do Amaral
- Laboratory of Biochemistry, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
| | - Tatjana S L Keesen
- Immunology of Infectious Diseases Laboratory, Department of Cellular and Molecular Biology, Federal University of Paraiba, João Pessoa 58051-900, PB, Brazil
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Singh R, Kashif M, Srivastava P, Manna PP. Recent Advances in Chemotherapeutics for Leishmaniasis: Importance of the Cellular Biochemistry of the Parasite and Its Molecular Interaction with the Host. Pathogens 2023; 12:pathogens12050706. [PMID: 37242374 DOI: 10.3390/pathogens12050706] [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: 12/20/2022] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Leishmaniasis, a category 1 neglected protozoan disease caused by a kinetoplastid pathogen called Leishmania, is transmitted through dipteran insect vectors (phlebotomine, sand flies) in three main clinical forms: fatal visceral leishmaniasis, self-healing cutaneous leishmaniasis, and mucocutaneous leishmaniasis. Generic pentavalent antimonials have long been the drug of choice against leishmaniasis; however, their success is plagued with limitations such as drug resistance and severe side effects, which makes them redundant as frontline therapy for endemic visceral leishmaniasis. Alternative therapeutic regimens based on amphotericin B, miltefosine, and paromomycin have also been approved. Due to the unavailability of human vaccines, first-line chemotherapies such as pentavalent antimonials, pentamidine, and amphotericin B are the only options to treat infected individuals. The higher toxicity, adverse effects, and perceived cost of these pharmaceutics, coupled with the emergence of parasite resistance and disease relapse, makes it urgent to identify new, rationalized drug targets for the improvement in disease management and palliative care for patients. This has become an emergent need and more relevant due to the lack of information on validated molecular resistance markers for the monitoring and surveillance of changes in drug sensitivity and resistance. The present study reviewed the recent advances in chemotherapeutic regimens by targeting novel drugs using several strategies including bioinformatics to gain new insight into leishmaniasis. Leishmania has unique enzymes and biochemical pathways that are distinct from those of its mammalian hosts. In light of the limited number of available antileishmanial drugs, the identification of novel drug targets and studying the molecular and cellular aspects of these drugs in the parasite and its host is critical to design specific inhibitors targeting and controlling the parasite. The biochemical characterization of unique Leishmania-specific enzymes can be used as tools to read through possible drug targets. In this review, we discuss relevant metabolic pathways and novel drugs that are unique, essential, and linked to the survival of the parasite based on bioinformatics and cellular and biochemical analyses.
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Affiliation(s)
- Ranjeet Singh
- Immunobiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Mohammad Kashif
- Immunobiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Prateek Srivastava
- Immunobiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
- Department of Clinical Biochemistry and Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Partha Pratim Manna
- Immunobiology Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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Hassanein RAM, El-Shemi AG, Albalawi BM. Cutaneous leishmaniasis in Tabuk, Saudi Arabia: epidemiological trends from 2006 to 2021. Pan Afr Med J 2023; 45:11. [PMID: 37426462 PMCID: PMC10323816 DOI: 10.11604/pamj.2023.45.11.38632] [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: 12/25/2022] [Accepted: 04/07/2023] [Indexed: 07/11/2023] Open
Abstract
Introduction cutaneous leishmaniasis (CL) is a vector-borne protozoan skin disease that affects all human ages and can pose extreme social and psychological impacts. This study aimed to reveal the epidemiological trends of CL in the Tabuk region, the Kingdom of Saudi Arabia (KSA), during the period from 2006 to 2021. Methods patients with CL, who were detected and registered at the regional Vector-borne Diseases Control Unit of the Tabuk province, between January 2006 and December 2021, were analyzed in this retrospective study. The patients´ data included their nationality, gender, and age, and their annual and month-by-month recorded patterns. Results a total of 1575 CL patients were reported during the said period. They were 53.1% Saudis and 46.9% non-Saudi expatriates with a ratio around 1.1: 1.0; and they were re-categorized as 83.17% males and 16.83% females with a ratio of 4.9: 1.0 (p <0.5). Additionally, the majority (1002/1575; 63.6%) of these CL patients were in age group of 15-45 years (p <0.5), and the lowest number was in age group of <5 years. Most importantly, there was a continuous annual and month-by-month record of these patients; reflecting CL endemicity in the Tabuk region of KSA. Conclusion the present findings imply that CL is endemic in the Tabuk region of KSA. As there is a recent increase in human immigration to this region, sustainable monitoring of CL and improving its control measures is warranted.
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Affiliation(s)
- Raafat Abdel Moneim Hassanein
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
- Department of Zoonoses, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Adel Galal El-Shemi
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Bader Mohammed Albalawi
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
- Department of Laboratory and Blood Bank, Alwajh General Hospital, Tabuk, Saudi Arabia
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Mušković M, Pokrajac R, Malatesti N. Combination of Two Photosensitisers in Anticancer, Antimicrobial and Upconversion Photodynamic Therapy. Pharmaceuticals (Basel) 2023; 16:ph16040613. [PMID: 37111370 PMCID: PMC10143496 DOI: 10.3390/ph16040613] [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: 03/22/2023] [Revised: 04/12/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
Photodynamic therapy (PDT) is a special form of phototherapy in which oxygen is needed, in addition to light and a drug called a photosensitiser (PS), to create cytotoxic species that can destroy cancer cells and various pathogens. PDT is often used in combination with other antitumor and antimicrobial therapies to sensitise cells to other agents, minimise the risk of resistance and improve overall outcomes. Furthermore, the aim of combining two photosensitising agents in PDT is to overcome the shortcomings of the monotherapeutic approach and the limitations of individual agents, as well as to achieve synergistic or additive effects, which allows the administration of PSs in lower concentrations, consequently reducing dark toxicity and preventing skin photosensitivity. The most common strategies in anticancer PDT use two PSs to combine the targeting of different organelles and cell-death mechanisms and, in addition to cancer cells, simultaneously target tumour vasculature and induce immune responses. The use of PDT with upconversion nanoparticles is a promising approach to the treatment of deep tissues and the goal of using two PSs is to improve drug loading and singlet oxygen production. In antimicrobial PDT, two PSs are often combined to generate various reactive oxygen species through both Type I and Type II processes.
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Affiliation(s)
- Martina Mušković
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, Croatia
| | - Rafaela Pokrajac
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, Croatia
| | - Nela Malatesti
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, Croatia
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Castelli G, Oliveri E, Valenza V, Giardina S, Facciponte F, La Russa F, Vitale F, Bruno F. Cultivation of Protozoa Parasites In Vitro: Growth Potential in Conventional Culture Media versus RPMI-PY Medium. Vet Sci 2023; 10:vetsci10040252. [PMID: 37104407 PMCID: PMC10143000 DOI: 10.3390/vetsci10040252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/20/2023] [Accepted: 03/24/2023] [Indexed: 03/29/2023] Open
Abstract
The in vitro cultivation of Leishmania and Trypanosoma parasites plays an important role in the diagnosis and treatment of parasitic diseases. Although Evans’s modified Tobie and Novy–MacNeal–Nicolle media, for Leishmania spp. and Trypanosoma cruzi, respectively, are the two commonly used media for both isolation and maintenance of strains in vitro, their preparation is expensive and laborious and requires fresh rabbit blood from housed animals. The purpose of this study was to evaluate the in vitro growth of both parasites with an alternative monophasic, blood-free, easy, and affordable medium called RPMI-PY, which was previously demonstrated suitable for the in vitro growth of Leishmania infantum. The potential growth of different Leishmania species and Trypanosoma cruzi was evaluated in traditional culture media versus RPMI-PY medium, and we recorded the protozoa parasites’ morphology via orange acridine–ethidium bromide staining. The results of our study show that RPMI-PY medium can be used for Trypanosoma cruzi, Leishmania amazonensis, Leishmania major, and Leishmania tropica species since in all the species except Leishmania braziliensis, the exponential growth of the parasite was observed, in many cases higher than conventional media. The staining confirmed not only their growth during the 72 h investigation but also the optimal morphology and viability of the protozoa in the RPMI-PY medium.
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Ribeiro IMM, de Sousa VC, Melo ECS, Carvalho RDCVD, Santos MDSD, Neto JADON, Melo DSD, Teixeira LSDA, Citó AMDGL, Moura AKS, Arcanjo DDR, Carvalho FADA, Alves MMDM, Mendonça ILD. Antileishmania and immunomodulatory potential of cashew nut shell liquid and cardanol. Toxicol In Vitro 2023; 87:105524. [PMID: 36435415 DOI: 10.1016/j.tiv.2022.105524] [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: 08/23/2022] [Revised: 10/25/2022] [Accepted: 11/21/2022] [Indexed: 11/24/2022]
Abstract
Conventional treatments for leishmaniasis have caused serious adverse effects, poor tolerance, development of resistant strains. Natural products have been investigated as potential therapeutic alternatives. The cashew nut shell liquid (CNSL) is a natural source of phenolic compounds with several biological activities, where cardanol (CN) is considered one of the most important and promising compounds. This study aimed to evaluate antileishmanial, cytotoxic and immunomodulatory activities of CNSL and CN. Both showed antileishmanial potential, with IC50 for CNSL and CN against Leishmania infantum: 148.12 and 56.74 μg/mL; against Leishmania braziliensis: 85.71 and 64.28 μg/mL; against Leishmania major: 153.56 and 122.31 μg/mL, respectively. The mean cytotoxic concentrations (CC50) of CNSL and CN were 37.51 and 31.44 μg/mL, respectively. CNSL and CN significantly reduced the percentage of infected macrophages, with a selectivity index (SI) >20 for CN. CNSL and cardanol caused an increase in phagocytic capacity and lysosomal volume. Survival rates of Zophobas morio larvae at doses of 3; 30 and 300 mg/kg were: 85%, 75% and 60% in contact with CNSL and 85%, 60% and 40% in contact with CN, respectively. There was a significant difference between the survival curves of larvae when treated with CN, demonstrating a significant acute toxicity for this substance. Additional investigations are needed to evaluate these substances in the in vivo experimental infection model.
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Affiliation(s)
- Iuliana Marjory Martins Ribeiro
- Programa de Pós-Graduação em Tecnologias Aplicadas a Animais de Interesse Regional, Universidade Federal do Piauí, Teresina, Piauí, Brazil
| | - Valéria Carlos de Sousa
- Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, Piauí, Brazil
| | | | | | | | | | - Danielly Silva de Melo
- Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, Piauí, Brazil
| | | | | | | | - Daniel Dias Rufino Arcanjo
- Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, Piauí, Brazil; Departamento de Biofísica e Fisiologia, Universidade Federal do Piauí, Teresina, Piauí, Brazil.
| | | | - Michel Muálem de Moraes Alves
- Programa de Pós-Graduação em Tecnologias Aplicadas a Animais de Interesse Regional, Universidade Federal do Piauí, Teresina, Piauí, Brazil; Núcleo de Pesquisas em Plantas Medicinais, Universidade Federal do Piauí, Teresina, Piauí, Brazil; Departamento de Morfofisiologia Veterinária, Universidade Federal do Piauí, Teresina, Piauí, Brazil.
| | - Ivete Lopes de Mendonça
- Programa de Pós-Graduação em Tecnologias Aplicadas a Animais de Interesse Regional, Universidade Federal do Piauí, Teresina, Piauí, Brazil; Departamento de Clínica e Cirurgia Veterinária, Universidade Federal do Piauí, Teresina, Piauí, Brazil
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Kelleci K, Gölebatmaz E. In Vitro Determination of Antileshmanial Activities of Benzimidazolium Derivatives on L. major Promastigotes and Amastigotes. Acta Parasitol 2023; 68:51-55. [PMID: 36348181 DOI: 10.1007/s11686-022-00632-3] [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: 07/25/2022] [Accepted: 10/17/2022] [Indexed: 11/09/2022]
Abstract
PURPOSE Leishmaniasis is a serious public health problem infecting millions of people worldwide. An effective and reliable treatment method to be used in the treatment of the disease has not been developed yet. METHODS In this article, the anti-leishmanial activities of two benzimidazolium derivatives (B.A and B.B) against Leishmania major promastigotes and amastigotes, which are known to cause cutaneous leishmaniasis, were investigated for the first time. The immunostimulatory activity of the developed formulations was determined using the J774 murine macrophage cell line. RESULTS B.A and B.B compounds were found to have a much higher cytotoxic effect than Amphotericin B (IC50 value 0.75 μM ± 0.03), which is used as the reference drug. The IC50 value was determined as 2.02 µM ± 0.52 for B.A and 1.83 µM ± 0.71 for B.B in Leishmania promastigotes. In addition, IC50 values of B. A and B.B Leishmania amastigotes were found to be 1.01 µM and 0.67 µM, respectively. It was found that B.B was 81.12 times more selective than Amphotericin B and showed the highest selectivity against L. major promastigotes (359.09) and amastigotes (980.80). Considering the selectivity indices (SI) of B.A and B.B, both compounds tested are more promising than Amphotericin B. CONCLUSION The results showed that benzimidazolium derivatives have anti-leishmanial potential against L. major, which is the causative agent of cutaneous leishmaniasis. Thus, we can say that the obtained results will help the development of effective and safe antileishmanial drug formulations against cutaneous leishmaniasis.
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Affiliation(s)
- Kübra Kelleci
- Vocational School, Department of Medical Services and Techniques, Beykoz University, Vatan Caddesi, No: 69 PK, Beykoz, 34805, Istanbul, Turkey. .,Faculty of Chemistry and Metallurgy, Department of Bioengineering, Yıldız Technical University, Esenler, Istanbul, Turkey.
| | - Eda Gölebatmaz
- Institute of Science and Technology, Department of Biology, Eskişehir Osmangazi University, Eskisehir, Turkey
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O’Connor C. From Cork to India to Liverpool: Colonel Charles Donovan (1863–1951). Indian J Dermatol Venereol Leprol 2023:1-4. [PMID: 37067126 DOI: 10.25259/ijdvl_569_2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 01/23/2023] [Indexed: 03/31/2023]
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