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Sfogliarini C, Pepe G, Cesta CM, Allegretti M, Locati M, Vegeto E. The immune activity of selective estrogen receptor modulators is gene and macrophage subtype-specific yet converges on Il1b downregulation. Biomed Pharmacother 2023; 165:115008. [PMID: 37442065 DOI: 10.1016/j.biopha.2023.115008] [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: 04/05/2023] [Revised: 05/29/2023] [Accepted: 06/11/2023] [Indexed: 07/15/2023] Open
Abstract
Raloxifene belongs to the family of Selective Estrogen Receptor Modulators (SERMs), which are drugs widely prescribed for Estrogen Receptor alpha (ERα)-related pathologies. Recently, SERMs are being tested in repurposing strategies for ERα-independent clinical indications, including a wide range of microbial infections. Macrophages are central in the fight against pathogen invasion. Despite estrogens have been shown to regulate macrophage phenotype, SERMs activity in these cells is still poorly defined. We investigated the activity of Raloxifene in comparison with another widely used SERM, Tamoxifen, on immune gene expression in macrophages obtained from mouse and human tissues, including mouse peritoneal macrophages, bone marrow-derived macrophages, microglia or human blood-derived macrophages, assaying for the involvement of the ERα, PI3K and NRF2 pathways also under inflammatory conditions. Our data demonstrate that Raloxifene acts by a dual mechanism, which entails ERα antagonism and off-target mediators. Moreover, micromolar concentrations of Raloxifene increase the expression of immune metabolic genes, such as Vegfa and Hmox1, through PI3K and NRF2 activation selectively in peritoneal macrophages. Conversely, Il1b mRNA down-regulation by SERMs is consistently observed in all macrophage subtypes and unrelated to the PI3K/NRF2 system. Importantly, the production of the inflammatory cytokine TNFα induced by the bacterial endotoxin, LPS, is potentiated by SERMs and paralleled by the cell subtype-specific increase in IL1β secretion. This work extends our knowledge on the biological and molecular mechanisms of SERMs immune activity and indicate macrophages as a pharmacological target for the exploitation of the antimicrobial potential of these drugs.
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Affiliation(s)
- Chiara Sfogliarini
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy.
| | - Giovanna Pepe
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy.
| | | | | | - Massimo Locati
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, 20089 Milan, Italy; Department of Medical Biotechnology and Translational Medicine, University of Milan, 20133 Milan, Italy.
| | - Elisabetta Vegeto
- Department of Pharmaceutical Sciences, University of Milan, 20133 Milan, Italy.
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Alyamani M, Alshehri S, Alam P, Ud Din Wani S, Ghoneim MM, Shakeel F. Solubility and solution thermodynamics of raloxifene hydrochloride in various (DMSO + water) compositions. ALEXANDRIA ENGINEERING JOURNAL 2022; 61:9119-9128. [DOI: 10.1016/j.aej.2022.02.051] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/22/2023]
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3
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Conserva GA, Costa-Silva TA, Quirós-Guerrero LM, Marcourt L, Wolfender JL, Queiroz EF, Tempone AG, Lago JHG. Kaempferol-3-O-α-(3,4-di-E-p-coumaroyl)-rhamnopyranoside from Nectandra oppositifolia releases Ca 2+ from intracellular pools of Trypanosoma cruzi affecting the bioenergetics system. Chem Biol Interact 2021; 349:109661. [PMID: 34537181 DOI: 10.1016/j.cbi.2021.109661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 08/12/2021] [Accepted: 09/15/2021] [Indexed: 12/22/2022]
Abstract
Phytochemical analysis of EtOH extract from leaves of Nectandra oppositifolia afforded three flavonoids: kaempferol (1), kaempferol-3-O-α-rhamnopyranoside (2) and kaempferol-3-O-α-(3,4-di-E-p-coumaroyl)-rhamnopyranoside (3), which were characterized by NMR and ESI-HRMS. When tested against the protozoan parasite Trypanosoma cruzi, the etiologic agent of Chagas disease, flavonoids 1 and 3 were effective to kill the trypomastigotes with IC50 values of 32.0 and 6.7 μM, respectively, while flavonoid 2 was inactive. Isolated flavonoids 1-3 were also tested in mammalian fibroblasts and showed CC50 values of 24.8, 48.7 and 153.1 μM, respectively. Chemically, these results suggested that the free aglycone plays an important role in the bioactivity while the presence of p-coumaroyl unities linked in the rhamnoside unity is important to enhance the antitrypanosomal activity and reduce the mammalian cytotoxicity. The mechanism of cellular death was investigated for the most potent flavonoid 3 in the trypomastigotes using fluorescent and luminescent-based assays. It indicated that this compound induced neither permeabilization of the plasma membrane nor depolarization of the membrane electric potential. However, early time incubation (20 min) with flavonoid 3 resulted in a constant elevation of the Ca2+ levels inside the parasite. This effect was followed by a mitochondrial imbalance, leading to a hyperpolarization and depolarization of the mitochondrial membrane potential, with reduction of the ATP levels. During this time, the levels of reactive oxygen species levels (ROS) were unaltered. The leakage of Ca2+ from the intracellular pools can affect the bioenergetics system of T. cruzi, leading to the parasite death. Therefore, flavonoid 3 can be a useful tool for future studies against T. cruzi parasites.
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Affiliation(s)
- Geanne A Conserva
- Center of Natural Sciences and Humanities, Federal University of ABC, Santo Andre, SP, 09210-180, Brazil.
| | - Thais A Costa-Silva
- Center of Natural Sciences and Humanities, Federal University of ABC, Santo Andre, SP, 09210-180, Brazil.
| | - Luis M Quirós-Guerrero
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, Geneva, Switzerland.
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, Geneva, Switzerland.
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, Geneva, Switzerland.
| | - Emerson F Queiroz
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, Geneva, Switzerland.
| | - Andre G Tempone
- Centre for Parasitology and Mycology, Instituto Adolfo Lutz, São Paulo, SP, 01246-000, Brazil.
| | - João Henrique G Lago
- Center of Natural Sciences and Humanities, Federal University of ABC, Santo Andre, SP, 09210-180, Brazil.
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4
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Garg A, Singh A, Kumar A. Selective estrogen receptor modulators against Gram-positive and Gram-negative bacteria: an experimental study. Future Microbiol 2021; 16:987-1001. [PMID: 34406075 DOI: 10.2217/fmb-2020-0310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: This study was conducted to explore the antibacterial potential of selective estrogen receptor modulators (SERMs). Materials & methods: The percentage growth retardation, bacterial growth kinetics, biofilm, checkerboard and bacterial burden assays were conducted to check antibacterial potential of SERMs. Finally, docking study was also conducted to predict possible antibacterial mechanism of SERMs. Results: In vitro and in vivo studies have shown the antibacterial activity of SERMs against different tested strains of bacteria. The synergistic activity of SERMs in combination with standard antibacterial agents was also observed and tested further under in vivo conditions. In vivo results have shown decreased bacterial bioburden. Docking studies have predicted the multimodal antibacterial mechanism of SERMs. Conclusion: SERMs can be considered as promising broad-spectrum antibacterial agents.
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Affiliation(s)
- Aakriti Garg
- Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
| | - Arti Singh
- Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
| | - Anoop Kumar
- Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India.,Department of Pharmacology & Clinical Research, Delhi Institute of Pharmaceutical Sciences & Research (DIPSAR), Delhi Pharmaceutical Sciences & Research University (DPSRU), New Delhi, 110017, India
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Londero VS, Costa-Silva TA, Antar GM, Baitello JB, de Oliveira LVF, Camilo FF, Batista ANL, Batista JM, Tempone AG, Lago JHG. Antitrypanosomal Lactones from Nectandra barbellata. JOURNAL OF NATURAL PRODUCTS 2021; 84:1489-1497. [PMID: 33857368 DOI: 10.1021/acs.jnatprod.0c01303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Twigs of Nectandra barbellata were extracted using a solution of the ionic liquid 1-butyl-3-methylimidazolium bromide (BMImBr) in H2O, assisted by microwave (MAE). After successive chromatographic steps, one sesquiterpene, costic acid, and three new related lactones, (R)-3(7)-Z-3-hexadec-21-enylidene-5-(hydroxymethyl)tetrahydrofuran-2-one (1), (R)-3(7)-Z-3-hexadecylidene-5-(hydroxymethyl)tetrahydrofuran-2-one (2), and (R)-3(7)-Z-3-docosylidene-5-(hydroxymethyl)tetrahydrofuran-2-one (3), were isolated. After structural elucidation using IR, UV, HRESIMS, NMR, ECD, and VCD, compounds 1-3 were tested against trypomastigote forms of Trypanosoma cruzi. The mechanism of action of bioactive isolated compounds was studied using different fluorescent-based approaches to investigate alterations of the plasma membrane, permeability/electric potential (ΔΨp), reactive oxygen species levels, mitochondria (electric membrane potential, ΔΨm/ATP levels), Ca2+ levels, and pH of the acidocalcisomes. In addition, in silico studies predicted no resemblance to pan assay interference compounds (PAINS).
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Affiliation(s)
- Vinicius S Londero
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, São Paulo 05508-000, Brazil
| | - Thais A Costa-Silva
- Center for Natural and Human Sciences, Federal University of ABC, São Paulo 09210-170, Brazil
| | - Guilherme M Antar
- Department of Botany, Institute of Biosciences, University of São Paulo, São Paulo 05508-090, Brazil
| | - João B Baitello
- Dasonomy Division, Instituto Florestal, São Paulo 02377-000, Brazil
| | - Larissa V F de Oliveira
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, São Paulo 05508-000, Brazil
| | - Fernanda F Camilo
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, São Paulo 05508-000, Brazil
| | - Andrea N L Batista
- Institute of Chemistry, Fluminense Federal University, Rio de Janeiro 24220-900, Brazil
| | - Joao M Batista
- Institute of Science and Technology, Federal University of São Paulo, São Paulo 12231-280, Brazil
| | - Andre G Tempone
- Centre for Parasitology and Mycology, Instituto Adolfo Lutz, São Paulo 01246-902, Brazil
| | - Joao Henrique G Lago
- Center for Natural and Human Sciences, Federal University of ABC, São Paulo 09210-170, Brazil
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Barbosa H, Costa-Silva TA, Alves Conserva GA, Araujo AJ, Lordello ALL, Antar GM, Amaral M, Soares MG, Tempone AG, Lago JHG. Aporphine Alkaloids from Ocotea puberula with Anti-Trypanosoma Cruzi Potential - Activity of Dicentrine-β-N-Oxide in the Plasma Membrane Electric Potentials. Chem Biodivers 2021; 18:e2001022. [PMID: 33635585 DOI: 10.1002/cbdv.202001022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/11/2021] [Indexed: 11/05/2022]
Abstract
One new aporphine, dicentrine-β-N-oxide (1), together with five related known alkaloids dehydrodicentrine (2), predicentrine (3), N-methyllaurotetanine (4), cassythicine (5), and dicentrine (6) were isolated from the leaves of Ocotea puberula (Lauraceae). Antiprotozoal activity of the isolated compounds was evaluated in vitro against trypomastigote forms of Trypanosoma cruzi. Among the tested compounds, alkaloid 1 exhibited higher potential with EC50 value of 18.2 μM and reduced toxicity against NCTC cells (CC50 >200 μM - SI>11.0), similar to positive control benznidazole (EC50 of 17.7 μM and SI=10.7). Considering the promising results of dicentrine-β-N-oxide (1) against trypomastigotes, the mechanism of parasite death caused by this alkaloid was investigated. As observed, this compound reached the plasma membrane electric potential directly after 2 h of incubation and triggered mitochondrial depolarization, which probably leads to trypomastigote death. Therefore, dicentrine-β-N-oxide (1), reported for the first time in this work, can contribute to future works for the development of new trypanocidal agents.
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Affiliation(s)
- Henrique Barbosa
- Center for Natural and Human Sciences, Federal University of ABC, 09210-580, Santo Andre, SP, Brazil
| | - Thais A Costa-Silva
- Center for Natural and Human Sciences, Federal University of ABC, 09210-580, Santo Andre, SP, Brazil
| | - Geanne A Alves Conserva
- Center for Natural and Human Sciences, Federal University of ABC, 09210-580, Santo Andre, SP, Brazil
| | - Adelson J Araujo
- Department of Chemistry, Federal University of Paraná, 81531-980, Curitiba, PR, Brazil
| | - Ana Luísa L Lordello
- Department of Chemistry, Federal University of Paraná, 81531-980, Curitiba, PR, Brazil
| | - Guilherme M Antar
- Institute of Biosciences, University of São Paulo, 05508-090, São Paulo, SP, Brazil
| | - Maiara Amaral
- Center for Parasitology and Mycology, Instituto Adolfo Lutz, 01246-902, São Paulo, SP, Brazil
| | - Marisi G Soares
- Institute of Chemistry, Federal University of Alfenas, 37130-001, Alfenas, MG, Brazil
| | - Andre G Tempone
- Center for Parasitology and Mycology, Instituto Adolfo Lutz, 01246-902, São Paulo, SP, Brazil
| | - João Henrique G Lago
- Center for Natural and Human Sciences, Federal University of ABC, 09210-580, Santo Andre, SP, Brazil
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Ferreira RAA, Junior CDOR, Martinez PDG, Koovits PJ, Soares BM, Ferreira LLG, Michelan-Duarte S, Chelucci RC, Andricopulo AD, Galuppo MK, Uliana SRB, Matheeussen A, Caljon G, Maes L, Campbell S, Kratz JM, Mowbray CE, Dias LC. 2-aminobenzimidazoles for leishmaniasis: From initial hit discovery to in vivo profiling. PLoS Negl Trop Dis 2021; 15:e0009196. [PMID: 33617566 PMCID: PMC7932521 DOI: 10.1371/journal.pntd.0009196] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 03/04/2021] [Accepted: 02/02/2021] [Indexed: 12/30/2022] Open
Abstract
Leishmaniasis is a major infectious disease with hundreds of thousands of new cases and over 20,000 deaths each year. The current drugs to treat this life-threatening infection have several drawbacks such as toxicity and long treatment regimens. A library of 1.8 million compounds, from which the hits reported here are publicly available, was screened against Leishmania infantum as part of an optimization program; a compound was found with a 2-aminobenzimidazole functionality presenting moderate potency, low metabolic stability and high lipophilicity. Several rounds of synthesis were performed to incorporate chemical groups capable of reducing lipophilicity and clearance, leading to the identification of compounds that are active against different parasite strains and have improved in vitro properties. As a result of this optimization program, a group of compounds was further tested in anticipation of in vivo evaluation. In vivo tests were carried out with compounds 29 (L. infantum IC50: 4.1 μM) and 39 (L. infantum IC50: 0.5 μM) in an acute L. infantum VL mouse model, which showed problems of poor exposure and lack of efficacy, despite the good in vitro potency. Leishmaniasis is a neglected tropical disease affecting millions of people worldwide and, in the case of visceral leishmaniasis (VL), is potentially fatal if untreated. Protozoan parasites of the genus Leishmania spp. are the causative agents of leishmaniasis, which has different clinical manifestations, including the visceral form and a cutaneous form that causes disfiguring skin lesions. The current treatment options are limited either by the length of treatment or toxic side effects. Starting from a promising hit in an in vitro phenotypic screen, hundreds of analogues were synthesized with the aim of finding a molecule capable of killing the parasite whilst causing little or no harm to the patient. The program led to several active compounds with good in vitro activity against L. infantum intracellular amastigotes, however, in vivo data showed low parasiticidal efficacy.
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Affiliation(s)
| | | | | | - Paul John Koovits
- Institute of Chemistry, University of Campinas (UNICAMP), Campinas-SP, Brazil
| | | | - Leonardo L. G. Ferreira
- Laboratory of Medicinal and Computational Chemistry, Physics Institute of São Carlos, University of São Paulo (USP), São Carlos-SP, Brazil
| | - Simone Michelan-Duarte
- Laboratory of Medicinal and Computational Chemistry, Physics Institute of São Carlos, University of São Paulo (USP), São Carlos-SP, Brazil
| | - Rafael Consolin Chelucci
- Laboratory of Medicinal and Computational Chemistry, Physics Institute of São Carlos, University of São Paulo (USP), São Carlos-SP, Brazil
| | - Adriano D. Andricopulo
- Laboratory of Medicinal and Computational Chemistry, Physics Institute of São Carlos, University of São Paulo (USP), São Carlos-SP, Brazil
| | - Mariana K. Galuppo
- Department of Parasitology, Biomedical Sciences Institute, University of São Paulo (USP), São Paulo-SP, Brazil
| | - Silvia R. B. Uliana
- Department of Parasitology, Biomedical Sciences Institute, University of São Paulo (USP), São Paulo-SP, Brazil
| | - An Matheeussen
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Antwerpen, Belgium
| | - Guy Caljon
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Antwerpen, Belgium
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Antwerpen, Belgium
| | - Simon Campbell
- Drugs for Neglected Diseases initiative (DNDi), Geneva, Switzerland
| | - Jadel M. Kratz
- Drugs for Neglected Diseases initiative (DNDi), Geneva, Switzerland
| | | | - Luiz Carlos Dias
- Institute of Chemistry, University of Campinas (UNICAMP), Campinas-SP, Brazil
- * E-mail:
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Umehara E, Costa Silva TA, Mendes VM, Guadagnin RC, Sartorelli P, Tempone AG, Lago JHG. Differential lethal action of C17:2 and C17:0 anacardic acid derivatives in Trypanosoma cruzi – A mechanistic study. Bioorg Chem 2020; 102:104068. [DOI: 10.1016/j.bioorg.2020.104068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 06/27/2020] [Accepted: 06/29/2020] [Indexed: 02/07/2023]
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9
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Garg A, Singh B, Sharma R, Singh A, Kumar A. Selective Estrogen Receptor Modulators (SERMs): Mechanistic Insights Against Microbial Infections. Curr Mol Med 2020; 20:102-115. [PMID: 31622201 DOI: 10.2174/1566524019666191014112133] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 09/06/2019] [Accepted: 09/13/2019] [Indexed: 12/31/2022]
Abstract
Background:
Infections are one of the leading causes of death worldwide
and currently available treatments remain unsatisfactory due to rise in the cases of
antimicrobial resistance. Thus, there is a need for the development of new drugs with
different mechanisms of action. However, the development of new antimicrobials agents
is a long and expensive process. Hence, most of the pharmaceutical companies are
Methodology:
The data related to SERMs and microbial infection has been extracted
from Pub Med (from January 1997 to December 2018). A total of 101 studies have been
published from 1997 -2018 regarding SERMs and microbial infections.
Results:
On the basis of inclusion and exclusion criteria, 25 studies have been included
for the analysis of level of evidence regarding antimicrobial effects of SERMs. Emerging
reports have indicated the antimicrobial property of selective estrogen receptor
modulators (SERMs) against normal and resistant strains under in vitro and in vivo
conditions against wide variety of microorganisms through different mechanisms of
action.
Conclusion:
In conclusion, SERMs could be developed as a broad spectrum
antimicrobial agent alone or in combination with existing antimicrobial agents.
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Affiliation(s)
- Aakriti Garg
- Department of Pharmacology, Indo-Soviet Friendship College of Pharmacy (ISFCP), Moga, Punjab, India
| | - Balraj Singh
- Department of Pharmacology, Indo-Soviet Friendship College of Pharmacy (ISFCP), Moga, Punjab, India
| | - Ruchika Sharma
- Department of Biotechnology, Indo-Soviet Friendship Institute of Professional Studies (ISFIPS), Moga, Punjab, India
| | - Arti Singh
- Department of Pharmacology, Indo-Soviet Friendship College of Pharmacy (ISFCP), Moga, Punjab, India
| | - Anoop Kumar
- Department of Pharmacology, Indo-Soviet Friendship College of Pharmacy (ISFCP), Moga, Punjab, India
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Study of Ethinyl Estradiol Activity Against Promastigotes, Axenic and Macrophage-Dwelling Amastigotes of Leishmania infantum by Using Atomic Force Microscopy and Methyl Thiazolyl Tetrazolium Methods. Jundishapur J Microbiol 2019. [DOI: 10.5812/jjm.90857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Sundar S, Agrawal N, Singh B. Exploiting knowledge on pharmacodynamics-pharmacokinetics for accelerated anti-leishmanial drug discovery/development. Expert Opin Drug Metab Toxicol 2019; 15:595-612. [PMID: 31174439 DOI: 10.1080/17425255.2019.1629417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Introduction: Being on the top list of neglected tropical diseases, leishmaniasis has been marked for elimination by 2020. In the light of small armamentarium of drugs and their associated drawbacks, the understanding of pharmacodynamics and/or pharmacokinetics becomes a priority to achieve and sustain disease elimination. Areas covered: The authors have looked into pharmacological aspects of existing and emerging drugs for treatment of leishmaniasis. An in-depth understanding of pharmacodynamics and pharmacokinetics (PKPD) provides a rationale for drug designing and optimizing the treatment strategies. It forms a key to prevent drug resistance and avoid drug-associated adverse effects. The authors have compiled the researches on the PKPD of different anti-leishmanial formulations that have the potential for improved and/or effective disease intervention. Expert opinion: Understanding the pharmacological aspects of drugs forms the basis for the clinical application of novel drugs. Tailoring drug dosage and individualized treatment can avoid the adverse events and bridge gap between the in vitro models and their clinical application. An integrated approach, with pragmatic use of technological advances can improve phenotypic screening and physiochemical properties of novel drugs. Concomitantly, this can serve to improve clinical efficacies, reduce the incidence of relapse and accelerate the drug discovery/development process for leishmaniasis elimination.
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Affiliation(s)
- Shyam Sundar
- a Department of Medicine , Institute of Medical Sciences, Banaras Hindu University , Varanasi , India
| | - Neha Agrawal
- b Hepatology , Temple University , Philadelphia , PA , USA
| | - Bhawana Singh
- a Department of Medicine , Institute of Medical Sciences, Banaras Hindu University , Varanasi , India.,c Department of Pathology , Wexner Medical Center, The Ohio State University , Columbus , OH , USA
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Upadhyay A, Chandrakar P, Gupta S, Parmar N, Singh SK, Rashid M, Kushwaha P, Wahajuddin M, Sashidhara KV, Kar S. Synthesis, Biological Evaluation, Structure-Activity Relationship, and Mechanism of Action Studies of Quinoline-Metronidazole Derivatives Against Experimental Visceral Leishmaniasis. J Med Chem 2019; 62:5655-5671. [PMID: 31124675 DOI: 10.1021/acs.jmedchem.9b00628] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In our efforts to identify novel chemical scaffolds for the development of antileishmanial agents, a series of quinoline-metronidazole hybrid compounds was synthesized and tested against the murine model of visceral leishmaniasis. Among all synthesized derivatives, 15b and 15i showed significant antileishmanial efficacy against both extracellular promastigote (IC50 9.54 and 5.42 μM, respectively) and intracellular amastigote (IC50 9.81 and 3.75 μM, respectively) forms of Leishmania donovani with negligible cytotoxicity toward the host (J774 macrophages, Vero cells). However, compound 15i effectively inhibited the parasite burden in the liver and spleen (>80%) of infected BALB/c mice. Mechanistic studies revealed that 15i triggers oxidative stress which induces bioenergetic collapse and apoptosis of the parasite by decreasing ATP production and mitochondrial membrane potential. Structure-activity analyses and pharmacokinetic studies suggest 15i as a promising antileishmanial lead and emphasize the importance of quinoline-metronidazole series as a suitable platform for the future development of antileishmanial agents.
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Affiliation(s)
- Akanksha Upadhyay
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan , New Delhi 110025 , India
| | - Pragya Chandrakar
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan , New Delhi 110025 , India
| | - Sampa Gupta
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan , New Delhi 110025 , India
| | - Naveen Parmar
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan , New Delhi 110025 , India
| | - Sandeep Kumar Singh
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan , New Delhi 110025 , India
| | - Mamunur Rashid
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan , New Delhi 110025 , India
| | - Pragati Kushwaha
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan , New Delhi 110025 , India
| | - Muhammad Wahajuddin
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan , New Delhi 110025 , India
| | - Koneni V Sashidhara
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan , New Delhi 110025 , India
| | - Susanta Kar
- Academy of Scientific and Innovative Research (AcSIR) , Anusandhan Bhawan , New Delhi 110025 , India
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13
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Amaral M, de Sousa FS, Silva TAC, Junior AJG, Taniwaki NN, Johns DM, Lago JHG, Anderson EA, Tempone AG. A semi-synthetic neolignan derivative from dihydrodieugenol B selectively affects the bioenergetic system of Leishmania infantum and inhibits cell division. Sci Rep 2019; 9:6114. [PMID: 30992481 PMCID: PMC6467890 DOI: 10.1038/s41598-019-42273-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 03/26/2019] [Indexed: 01/07/2023] Open
Abstract
Leishmaniasis is a neglected disease that affects more than 12 million people, with a limited therapy. Plant-derived natural products represent a useful source of anti-protozoan prototypes. In this work, four derivatives were prepared from neolignans isolated from the Brazilian plant Nectandra leucantha, and their effects against intracellular amastigotes of Leishmania (L.) infantum evaluated in vitro. IC50 values between 6 and 35 µM were observed and in silico predictions suggested good oral bioavailability, no PAINS similarities, and ADMET risks typical of lipophilic compounds. The most selective (SI > 32) compound was chosen for lethal action and immunomodulatory studies. This compound caused a transient depolarization of the plasma membrane potential and induced an imbalance of intracellular Ca2+, possibly resulting in a mitochondrial impairment and leading to a strong depolarization of the membrane potential and decrease of ATP levels. The derivative also interfered with the cell cycle of Leishmania, inducing a programmed cell death-like mechanism and affecting DNA replication. Further immunomodulatory studies demonstrated that the compound eliminates amastigotes via an independent activation of the host cell, with decrease levels of IL-10, TNF and MCP-1. Additionally, this derivative caused no hemolytic effects in murine erythrocytes and could be considered promising for future lead studies.
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Affiliation(s)
- Maiara Amaral
- Centre for Parasitology and Mycology, Instituto Adolfo Lutz, São Paulo, 01246-000, Brazil
| | - Fernanda S de Sousa
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, São Paulo, 09972-270, Brazil
| | - Thais A Costa Silva
- Centre of Natural and Human Sciences, Federal University of ABC, Santo André, 09210-580, Brazil
| | - Andrés Jimenez G Junior
- Hospital das Clínicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, São Paulo, 05403-000, Brazil
| | - Noemi N Taniwaki
- Laboratory of Electron Microscopy, Instituto Adolfo Lutz, São Paulo, 01246-000, Brazil
| | - Deidre M Johns
- Department of Biomedical Sciences, Oregon State University, Corvallis, Oregon, 97331, USA
| | - João Henrique G Lago
- Centre of Natural and Human Sciences, Federal University of ABC, Santo André, 09210-580, Brazil
| | - Edward A Anderson
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Andre G Tempone
- Centre for Parasitology and Mycology, Instituto Adolfo Lutz, São Paulo, 01246-000, Brazil.
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14
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Zahedifard F, Lee H, No JH, Salimi M, Seyed N, Asoodeh A, Rafati S. Anti-leishmanial activity of Brevinin 2R and its Lauric acid conjugate type against L. major: In vitro mechanism of actions and in vivo treatment potentials. PLoS Negl Trop Dis 2019; 13:e0007217. [PMID: 30811391 PMCID: PMC6411200 DOI: 10.1371/journal.pntd.0007217] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 03/11/2019] [Accepted: 02/05/2019] [Indexed: 12/18/2022] Open
Abstract
Leishmaniasis, as a major health problem in tropical and sub-tropical areas in the world, needs novel, safe, nontoxic and plausible therapeutic solutions for its control. As a part of innate immune system, natural antimicrobial peptides have a potential to be used as new generation of antibiotics especially after persistent resistance of conventional antimicrobial agents. Brevinin 2R, a member of Defensin families of host defense peptides, showed promising effects against bacterial and fungal infections as well as cancerous cell lines. In the current research, the anti-leishmanial effect of Brevinin 2R and its lauric acid conjugate was investigated against Leishmania major (L. major) parasite. The data revealed that, conjugation of fatty acid to Brevinin 2R, strengthen its effect on L. major promastigotes as well as toxicity and hemolytic effect. These peptides showed anitleishmanial activity through cell membrane disruption and changes in the electrical and mitochondrial membrane potential. No signs of apoptosis induction or caspase activation were detected. Despite its hemolytic and cytotoxic effect in in vitro conditions, lauric acid- Brevinin 2R (L- Brevinin 2R) did not show site specific adverse reactions in animal model. Treatment course with L- Brevinin 2R in the L. major infected mice exhibited decreased parasite load in the lymph nodes adjacent to the infected site despite cytokine production profile and footpad swelling data. Seeking novel drugs against leishmaniasis is a necessity due to inefficiency of current medications. Brevinin 2R, as a non-hemolytic natural antimicrobial peptide, was effective against vast majority of bacterial and fungal infections as well as cancerous cell lines. In this regard in the current study, the efficacy of Brevinin 2R and its lauric acid conjugate version were studied against L. major parasite growth inhibition at in vitro and in animal model. The results exhibited that, conjugation of fatty acid to Brevinin 2R exacerbated anti-leishmanial effect. L- Brevinin 2R resolved the promastigotes through membrane disruption and changes in the membrane and mitochondrial potential. Also, L- Brevinin 2R was able to limit successfully the parasite load in the lymph nodes of L. major infected animals.
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Affiliation(s)
- Farnaz Zahedifard
- Immunotherapy and Leishmania Vaccine Research Department, Pasteur Institute of Iran, Tehran, Iran
- Leishmania Research Lab, Institut Pasteur Korea, Seongnam-si, Republic of Korea
| | - Hyeryon Lee
- Leishmania Research Lab, Institut Pasteur Korea, Seongnam-si, Republic of Korea
| | - Joo Hwan No
- Leishmania Research Lab, Institut Pasteur Korea, Seongnam-si, Republic of Korea
| | - Mona Salimi
- Physiology and Pharmacology Department, Pasteur Institute of Iran, Tehran, Iran
| | - Negar Seyed
- Immunotherapy and Leishmania Vaccine Research Department, Pasteur Institute of Iran, Tehran, Iran
| | - Ahmad Asoodeh
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Sima Rafati
- Immunotherapy and Leishmania Vaccine Research Department, Pasteur Institute of Iran, Tehran, Iran
- * E-mail:
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15
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Carvalho SH, Frézard F, Pereira NP, Moura AS, Ramos LMQC, Carvalho GB, Rocha MOC. American tegumentary leishmaniasis in Brazil: a critical review of the current therapeutic approach with systemic meglumine antimoniate and short‐term possibilities for an alternative treatment. Trop Med Int Health 2019; 24:380-391. [DOI: 10.1111/tmi.13210] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sílvia H. Carvalho
- Serviço de Doenças Infecciosas e Parasitárias Hospital Eduardo de Menezes Fundação Hospitalar do Estado de Minas Gerais Belo Horizonte, Minas Gerais Brazil
| | - Frédéric Frézard
- Departamento de Fisiologia e Biofísica Instituto de Ciências Biológicas Universidade Federal de Minas Gerais Belo Horizonte, Minas Gerais Brazil
| | - Neila P. Pereira
- Departamento do Medicamento Faculdade de Farmácia Universidade Federal da Bahia Salvador, Bahia Brazil
| | - Alexandre S. Moura
- Departamento de Medicina Universidade José do Rosário Vellano‐Unifenas Belo Horizonte, Minas Gerais Brazil
| | - Lucinéia M. Q. C. Ramos
- Serviço de Doenças Infecciosas e Parasitárias Hospital Eduardo de Menezes Fundação Hospitalar do Estado de Minas Gerais Belo Horizonte, Minas Gerais Brazil
| | - Gabriel B. Carvalho
- Escola Superior de Ciências da Santa Casa de Misericórdia de Vitória Vitória, Espírito Santo Brazil
| | - Manoel O. C. Rocha
- Departamento de Clínica Médica Faculdade de Medicina Universidade Federal de Minas Gerais Belo Horizonte, Minas Gerais Brazil
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16
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Ahad A, Shakeel F, Alfaifi OA, Raish M, Ahmad A, Al-Jenoobi FI, Al-Mohizea AM. Solubility determination of raloxifene hydrochloride in ten pure solvents at various temperatures: Thermodynamics-based analysis and solute-solvent interactions. Int J Pharm 2018; 544:165-171. [PMID: 29679751 DOI: 10.1016/j.ijpharm.2018.04.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 04/12/2018] [Accepted: 04/13/2018] [Indexed: 01/28/2023]
Abstract
The purpose of the present study was to determine the solubility of raloxifene hydrochloride (RHCl) in ten solvents: water, ethanol, isopropyl alcohol (IPA), ethylene glycol (EG), propylene glycol (PG), polyethylene glycol-400 (PEG-400), Transcutol, 1-butanol, dimethyl sulfoxide (DMSO), and ethyl acetate (EA) at temperatures of 298.2-323.2 K and a pressure of 0.1 MPa. The solubility data obtained was fitted upon "Apelblat and Van't Hoff" equations. The maximum mole fraction solubility of RHCl was obtained in DMSO (5.02 × 10-2 at 323.2 K), followed by PEG-400 (5.92 × 10-3 at 323.2 K), EA (3.11 × 10-3 at 323.2 K), Transcutol (1.22 × 10-3 at 323.2 K), PG (2.19 × 10-4 at 323.2 K), 1-butanol (1.96 × 10-4 at 323.2 K), IPA (1.47 × 10-4 at 323.2 K), ethanol (7.90 × 10-5 at 323.2 K), EG (6.65 × 10-5 at 323.2 K), and water (3.60 × 10-5 at 323.2 K). Similar fashions were noticed at each studied temperature. The higher solubility of RHCl in DMSO, PEG-400, EA, and Transcutol was possibly referable to their lower polarity in comparison with water. The molecular interactions between the solute and solvent molecules were estimated by calculating parameters like activity coefficients, and more prominent solute-solvent molecular interactions were noted for RHCl-DMSO, RHCl-EA, and RHCl-PEG-400 in comparison with the other solute-solvent combinations. The outcomes of the "apparent thermodynamic analysis" showed that the dissolution of RHCl was "endothermic, spontaneous and entropy-driven" in all investigated solvents. The obtained solubility data of RHCl in commonly used solvents could be useful in the purification, recrystallization, and dosage form design of the drug.
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Affiliation(s)
- Abdul Ahad
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia.
| | - Faiyaz Shakeel
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Omar Ali Alfaifi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mohammad Raish
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ajaz Ahmad
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Fahad I Al-Jenoobi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Abdullah M Al-Mohizea
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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17
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Londero VS, da Costa-Silva TA, Gomes KS, Ferreira DD, Mesquita JT, Tempone AG, Young MCM, Jerz G, Lago JHG. Acetylenic fatty acids from Porcelia macrocarpa (Annonaceae) against trypomastigotes of Trypanosoma cruzi: Effect of octadec-9-ynoic acid in plasma membrane electric potential. Bioorg Chem 2018; 78:307-311. [PMID: 29625270 DOI: 10.1016/j.bioorg.2018.03.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 03/27/2018] [Accepted: 03/28/2018] [Indexed: 10/17/2022]
Abstract
Porcelia macrocarpa (Warm.) R. E. Fries (Annonaceae) is an endemic plant in Brazil where its tasty pulp has been eaten fresh. The hexane extract from its flowers was subjected to chromatographic procedures to afford four acetylene derivatives identified as octadec-9-ynoic (stearolic acid - 1), (11E)-octadec-11-en-9-ynoic (santalbic acid - 2), 8-hydroxyoctadec-9,11-diynoic (3) and 8-hydroxyoctadec-17-en-9,11-diynoic (isanolic acid - 4) acids by NMR and HRESIMS. Among tested compounds against trypomastigote forms of T. cruzi, octadec-9-ynoic acid (1) displayed higher potential with IC50 = 27.6 µM and a selectivity index (SI) higher than 7. Compounds 2 and 3 showed IC50 of approximately 60 µM while compound 4 was inactive. The lethal action of the compound 1 was investigated using spectrofluorometric techniques to detect ROS content, plasma membrane permeability and plasma membrane potential by flow cytometry. Compound 1 showed no alteration in the production of ROS of treated trypomastigotes and no alteration of the plasma membrane permeability was observed as detected by the fluorescent probe SYTOX-green after 120 min of incubation. However, by using the potential-sensitive fluorescent probe DiSBAC2(3), compound 1 caused depolarization of the plasma membrane potential when compared to untreated parasites. Our results demonstrated the anti-T. cruzi effects of compounds 1-3 isolated from flowers of P. macrocarpa and indicated that the lethal effect of compound 1 in T. cruzi could be associated to the plasma membrane disturbance of the parasite.
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Affiliation(s)
- Vinicius S Londero
- Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, São Paulo 09972-270, Brazil
| | - Thais A da Costa-Silva
- Center of Natural and Human Sciences, Federal University of ABC, Santo André 09210-580, Brazil
| | - Kaio S Gomes
- Center of Natural and Human Sciences, Federal University of ABC, Santo André 09210-580, Brazil
| | - Daiane D Ferreira
- Center for Parasitology and Mycology, Adolfo Lutz Institute, São Paulo 01246-000, Brazil
| | - Juliana T Mesquita
- Center for Parasitology and Mycology, Adolfo Lutz Institute, São Paulo 01246-000, Brazil
| | - Andre G Tempone
- Center for Parasitology and Mycology, Adolfo Lutz Institute, São Paulo 01246-000, Brazil
| | - Maria Claudia M Young
- Nucleus of Research in Physiology and Biochemistry, Institute of Botany of São Paulo, São Paulo 04301-902, Brazil
| | - Gerold Jerz
- Institute of Food Chemistry, Technische Universität Braunschweig, Braunschweig 38106, Germany
| | - João Henrique G Lago
- Center of Natural and Human Sciences, Federal University of ABC, Santo André 09210-580, Brazil.
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18
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Charlton RL, Rossi-Bergmann B, Denny PW, Steel PG. Repurposing as a strategy for the discovery of new anti-leishmanials: the-state-of-the-art. Parasitology 2018; 145:219-236. [PMID: 28805165 PMCID: PMC5964475 DOI: 10.1017/s0031182017000993] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 05/23/2017] [Accepted: 05/25/2017] [Indexed: 12/17/2022]
Abstract
Leishmaniasis is a vector-borne neglected tropical disease caused by protozoan parasites of the genus Leishmania for which there is a paucity of effective viable non-toxic drugs. There are 1·3 million new cases each year causing considerable socio-economic hardship, best measured in 2·4 million disability adjusted life years, with greatest impact on the poorest communities, which means that desperately needed new antileishmanial treatments have to be both affordable and accessible. Established medicines with cheaper and faster development times may hold the cure for this neglected tropical disease. This concept of using old drugs for new diseases may not be novel but, with the ambitious target of controlling or eradicating tropical diseases by 2020, this strategy is still an important one. In this review, we will explore the current state-of-the-art of drug repurposing strategies in the search for new treatments for leishmaniasis.
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Affiliation(s)
- Rebecca L Charlton
- Department of Chemistry,University Science Laboratories,South Road,Durham DH1 3LE,UK
| | - Bartira Rossi-Bergmann
- Instituto de Biofísica Carlos Chagas Filho,Universidade Federal do Rio de Janeiro,Ilha do Fundão,CEP 21·949-900 Rio de Janeiro,RJ,Brazil
| | - Paul W Denny
- Department of Biosciences,University Science Laboratories,South Road,Durham DH1 3LE,UK
| | - Patrick G Steel
- Department of Chemistry,University Science Laboratories,South Road,Durham DH1 3LE,UK
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19
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Anand D, Yadav PK, Patel OPS, Parmar N, Maurya RK, Vishwakarma P, Raju KSR, Taneja I, Wahajuddin M, Kar S, Yadav PP. Antileishmanial Activity of Pyrazolopyridine Derivatives and Their Potential as an Adjunct Therapy with Miltefosine. J Med Chem 2017; 60:1041-1059. [DOI: 10.1021/acs.jmedchem.6b01447] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | - Pawan Kumar Yadav
- Academy of Scientific and Innovative Research, Anusandhan Bhawan, New Delhi 110025, India
| | | | - Naveen Parmar
- Academy of Scientific and Innovative Research, Anusandhan Bhawan, New Delhi 110025, India
| | | | - Preeti Vishwakarma
- Academy of Scientific and Innovative Research, Anusandhan Bhawan, New Delhi 110025, India
| | - Kanumuri S. R. Raju
- Academy of Scientific and Innovative Research, Anusandhan Bhawan, New Delhi 110025, India
| | - Isha Taneja
- Academy of Scientific and Innovative Research, Anusandhan Bhawan, New Delhi 110025, India
| | - M. Wahajuddin
- Academy of Scientific and Innovative Research, Anusandhan Bhawan, New Delhi 110025, India
| | - Susanta Kar
- Academy of Scientific and Innovative Research, Anusandhan Bhawan, New Delhi 110025, India
| | - Prem P. Yadav
- Academy of Scientific and Innovative Research, Anusandhan Bhawan, New Delhi 110025, India
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20
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Drug repositioning approaches to parasitic diseases: a medicinal chemistry perspective. Drug Discov Today 2016; 21:1699-1710. [PMID: 27365271 DOI: 10.1016/j.drudis.2016.06.021] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 05/20/2016] [Accepted: 06/21/2016] [Indexed: 01/25/2023]
Abstract
Identifying new indications for clinically useful drugs is a worthwhile approach for neglected tropical diseases. The number of successful repurposing cases in the field is growing as not-for-profit organizations, in association with academia and pharmaceutical companies, enable screening campaigns for the identification of new repositioning candidates. Current programs have delivered encouraging results as the use of state-of-the-art technologies, such as genomic and structural biology tools, and high-throughput screening platforms have become increasingly common in infectious disease research. Drug repositioning has played a key part in improving the lives of those suffering from these conditions, as evidenced by successful precedents and recent studies on preeminent parasitic disorders.
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21
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Preston S, Luo J, Zhang Y, Jabbar A, Crawford S, Baell J, Hofmann A, Hu M, Zhou HB, Gasser RB. Selenophene and thiophene-core estrogen receptor ligands that inhibit motility and development of parasitic stages of Haemonchus contortus. Parasit Vectors 2016; 9:346. [PMID: 27306029 PMCID: PMC4910235 DOI: 10.1186/s13071-016-1612-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 05/27/2016] [Indexed: 12/17/2022] Open
Abstract
Background Parasitic worms represent a substantial disease burden in animals and humans worldwide. The control of parasitic roundworms (nematodes) relies heavily on the use of anthelmintic drugs. However, widespread drug resistance in nematodes seriously compromises the effectiveness of many anthelmintics around the world. Thus, there is a need to discover new drugs, with unique modes of action, against parasites. Methods Here, we synthesised and tested 74 selective estrogen receptor modulators (SERMs) for in vitro-activity on parasitic larvae of Haemonchus contortus (barber’s pole worm), one of the most important nematode pathogens of small ruminants (including sheep and goats) and a key representative of one of the largest groups of parasitic nematodes (the Strongylida) of animals. We also studied the morphology of treated and untreated larvae using scanning electron microscopy (SEM), and assessed the agonistic/antagonistic activity of SERMs in a human embryonic kidney cell line using a luciferase reporter assay system. Results We identified three SERMs (one selenophene and two thiophene-core compounds) with potent inhibitory activities (at 3–25 μM) on the motility and development of parasitic stages of H. contortus. An SEM examination of treated H. contortus revealed considerable damage to the cuticle of fourth- but not exsheathed, third-stage larvae; this damage appeared to be consistent with that observed upon treatment with monepantel but not moxidectin (control compounds). Conclusion The potency of the three SERMs compared favourably with commercially available anthelmintics, such that they warrant further assessment as nematocides. Future studies could focus on assessing the selectivity of these SERMs to parasites, characterising their target(s) and/or designing analogs that are parasite-specific. Electronic supplementary material The online version of this article (doi:10.1186/s13071-016-1612-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sarah Preston
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Junjie Luo
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430072, China
| | - Yuezhou Zhang
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, 3010, Australia.,Medicinal Chemistry, Monash University Institute of Pharmaceutical Sciences (MIPS), Monash University, Parkville, VIC, 3052, Australia.,State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Abdul Jabbar
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Simon Crawford
- School of Biosciences, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Jonathan Baell
- Medicinal Chemistry, Monash University Institute of Pharmaceutical Sciences (MIPS), Monash University, Parkville, VIC, 3052, Australia
| | - Andreas Hofmann
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, 3010, Australia.,Structural Chemistry Program, Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD, 4111, Australia
| | - Min Hu
- State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Hai-Bing Zhou
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430072, China.
| | - Robin B Gasser
- Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC, 3010, Australia. .,Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Wuhan University School of Pharmaceutical Sciences, Wuhan, 430072, China.
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