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Fróes YN, Araújo JGN, Gonçalves JRDS, de Oliveira MDJMG, Everton GO, Filho VEM, Silva MRC, Silva LDM, Silva LA, Neto LGL, de Oliveira RM, Torres MAO, da Silva LCN, Lopes AJO, Aliança ASDS, da Rocha CQ, Sousa JCDS. Chemical Characterization and Leishmanicidal Activity In Vitro and In Silico of Natural Products Obtained from Leaves of Vernonanthura brasiliana (L.) H. Rob (Asteraceae). Metabolites 2023; 13:285. [PMID: 36837904 PMCID: PMC9967733 DOI: 10.3390/metabo13020285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/28/2023] [Accepted: 01/31/2023] [Indexed: 02/18/2023] Open
Abstract
Vernonanthura brasiliana (L.) H. Rob is a medicinal plant used for the treatment of several infections. This study aimed to evaluate the antileishmanial activity of V. brasiliana leaves using in vitro and in silico approaches. The chemical composition of V. brasiliana leaf extract was determined through liquid chromatography-mass spectrometry (LC-MS). The inhibitory activity against Leishmania amazonensis promastigote was evaluated by the MTT method. In silico analysis was performed using Lanosterol 14alpha-demethylase (CYP51) as the target. The toxicity analysis was performed in RAW 264.7 cells and Tenebrio molitor larvae. LC-MS revealed the presence of 14 compounds in V. brasiliana crude extract, including flavonoids, flavones, sesquiterpene lactones, and quinic acids. Eriodictol (ΔGbind = -9.0), luteolin (ΔGbind = -8.7), and apigenin (ΔGbind = -8.6) obtained greater strength of molecular interaction with lanosterol demethylase in the molecular docking study. The hexane fraction of V. brasiliana showed the best leishmanicidal activity against L. amazonensis in vitro (IC50 12.44 ± 0.875 µg·mL-1) and low cytotoxicity in RAW 264.7 cells (CC50 314.89 µg·mL-1, SI = 25.30) and T. molitor larvae. However, the hexane fraction and Amphotericin-B had antagonistic interaction (FICI index ≥ 4.0). This study revealed that V. brasiliana and its metabolites are potential sources of lead compounds for drugs for leishmaniasis treatment.
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Affiliation(s)
| | | | | | | | - Gustavo Oliveira Everton
- Laboratory of Research and Application of Essential Oils, Federal University of Maranhão, São Luís 65080-805, Brazil
| | - Victor Elias Mouchrek Filho
- Laboratory of Research and Application of Essential Oils, Federal University of Maranhão, São Luís 65080-805, Brazil
| | | | | | - Lucilene Amorim Silva
- Immunophysiology Laboratory, Federal University of Maranhão, São Luís 65080-805, Brazil
| | | | | | | | | | | | | | - Cláudia Quintino da Rocha
- Natural Products Research Laboratory, Department of Chemistry, Federal University of Maranhão, São Luís 65080-805, Brazil
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Garcia AR, Amaral ACF, Maria ACB, Paz MM, Amorim MMB, Chaves FCM, Vermelho AB, Nico D, Rodrigues IA. Antileishmanial Screening, Cytotoxicity, and Chemical Composition of Essential Oils: A Special Focus on Piper callosum Essential Oil. Chem Biodivers 2023; 20:e202200689. [PMID: 36565272 DOI: 10.1002/cbdv.202200689] [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: 07/22/2022] [Revised: 12/20/2022] [Accepted: 12/23/2022] [Indexed: 12/25/2022]
Abstract
Leishmania amazonensis is the etiological agent of tegumentary leishmaniasis, a disease characterized by the emergence of cutaneous and mucocutaneous ulcerated lesions that can evolve into severe destruction of skin tissue. Treatment of the disease is often accompanied by high toxicity and variable efficacy. Essential oils stand out for having diverse pharmacological properties. Here, we screened a panel of fourteen essential oils for their anti-L. amazonensis activity, cytotoxicity, and chemical profile. Lippia sidoides (LSEO) and Piper callosum (PCEO) oils displayed the best anti-promastigote and anti-amastigote activities with IC50 of 31 and 21 μg/ml, respectively. PCEO was the safest oil with a desirable selectivity index >10. In addition, PCEO showed no cytotoxicity against the VERO line and erythrocytes. PCEO-treated amastigotes displayed mitochondrial membrane depolarization and high levels of intracellular ROS. Safrole (54.72 %) was the main component of PCEO. The results described here highlight the use of essential oils to combat tegumentary leishmaniasis.
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Affiliation(s)
- Andreza R Garcia
- Programa de Pós Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil
| | - Ana Claudia F Amaral
- Laboratório de Produtos Naturais e Derivados, Departamento de Produtos Naturais, Farmanguinhos, FIOCRUZ, Rio de Janeiro, 22775-903, Brazil
| | - Ana Clara B Maria
- Laboratório de Produtos Naturais e Derivados, Departamento de Produtos Naturais, Farmanguinhos, FIOCRUZ, Rio de Janeiro, 22775-903, Brazil
| | - Mariana M Paz
- Programa de Pós Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil
| | - Mariana M B Amorim
- Instituto Municipal de Vigilância Sanitária, Vigilância de Zoonoses e de Inspeção Agropecuária, Rio de Janeiro, 22290-240, Brazil
| | | | - Alane B Vermelho
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil
| | - Dirlei Nico
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil
| | - Igor A Rodrigues
- Programa de Pós Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil.,Departamento de Produtos Naturais e Alimentos, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-902, Brazil
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Direct In Vitro Comparison of the Anti-Leishmanial Activity of Different Olive Oil Total Polyphenolic Fractions and Assessment of Their Combined Effects with Miltefosine. Molecules 2022; 27:molecules27196176. [PMID: 36234713 PMCID: PMC9571123 DOI: 10.3390/molecules27196176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/09/2022] [Accepted: 09/17/2022] [Indexed: 11/17/2022] Open
Abstract
The bioactive compounds present in the edible products of the olive tree have been extensively studied and their favorable effects on various disease risk factors have been demonstrated. The aim of this study was to perform a comparative analysis of the anti-leishmanial effects of total phenolic fractions (TPFs) derived from extra virgin olive oil with different phenolic contents and diverse quantitative patterns. Moreover, the present study investigated their association with miltefosine, a standard anti-leishmanial drug, against both extracellular promastigotes and intracellular amastigotes of a viscerotropic and a dermotropic Leishmania strain. The chemical compositions of TPFs were determined by high performance liquid chromatography with diode array detection (HPLC-DAD). Analysis of parasite growth kinetics, reactive oxygen species production and apoptotic events were determined by microscopy and flow cytometry. Our results revealed that the presence of oleacein (OLEA) and oleocanthal (OLEO) secoiridoids enhances the anti-leishmanial effect of TPF. The association between TPFs and miltefosine was suggested as being additive in Leishmania infantum and Leishmania major promastigotes, and as antagonistic in intracellular amastigotes, as was evaluated with the modified isobologram method. The obtained data verified that TPFs are bioactive dietary extracts with a strong anti-leishmanial activity and highlighted that fractions that are richer in OLEA and OLEO phenolic compounds possess stronger inhibitory effects against parasites. This study may contribute to improving the therapeutic approaches against leishmaniasis.
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Silva-Silva JV, Moreira RF, Watanabe LA, de Souza CDSF, Hardoim DDJ, Taniwaki NN, Bertho AL, Teixeira KF, Cenci AR, Doring TH, Júnior JWDC, de Oliveira AS, Marinho PSB, Calabrese KDS, Marinho AMDR, Almeida-Souza F. Monomethylsulochrin isolated from biomass extract of Aspergillus sp. against Leishmania amazonensis: In vitro biological evaluation and molecular docking. Front Cell Infect Microbiol 2022; 12:974910. [PMID: 36093206 PMCID: PMC9452909 DOI: 10.3389/fcimb.2022.974910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 08/02/2022] [Indexed: 11/24/2022] Open
Abstract
Leishmaniasis represents a serious world health problem, with 1 billion people being exposed to infection and a broad spectrum of clinical manifestations with a potentially fatal outcome. Based on the limitations observed in the treatment of leishmaniasis, such as high cost, significant adverse effects, and the potential for drug resistance, the aim of the present study was to evaluate the leishmanicidal activity of the compounds pseurotin A and monomethylsulochrin isolated from the biomass extract of Aspergillus sp. The chromatographic profiles of the extract were determined by high-performance liquid chromatography coupled with a diode-array UV-Vis detector (HPLC-DAD-UV), and the molecular identification of the pseurotin A and monomethylsulochrin were carried out by electrospray ionization mass spectrometry in tandem (LC-ESI-MS-MS) and nuclear magnetic resonance (NMR). Antileishmanial activity was assayed against promastigote and intracellular amastigote of Leishmania amazonensis. As a control, cytotoxicity assays were performed in non-infected BALB/c peritoneal macrophages. Ultrastructural alterations in parasites were evaluated by transmission electron microscopy. Changes in mitochondrial membrane potential were determined by flow cytometry. Only monomethylsulochrin inhibited the promastigote growth (IC50 18.04 ± 1.11 µM), with cytotoxicity to peritoneal macrophages (CC50 5.09 91.63 ± 1.28 µM). Activity against intracellular amastigote forms (IC50 5.09 ± 1.06 µM) revealed an increase in antileishmanial activity when compared with promastigotes. In addition to a statistically significant reduction in the evaluated infection parameters, monomethylsulochrin altered the ultrastructure of the promastigote forms with atypical vacuoles, electron-dense corpuscles in the cytoplasm, changes at the mitochondria outer membrane and abnormal disposition around the kinetoplast. It was showed that monomethylsulochrin leads to a decrease in the mitochondrial membrane potential (25.9%, p = 0.0286). Molecular modeling studies revealed that monomethylsulochrin can act as inhibitor of sterol 14-alpha-demethylase (CYP51), a therapeutic target for human trypanosomiasis and leishmaniasis. Assessed for its drug likeness, monomethylsulochrin follows the Lipinski Rule of five and Ghose, Veber, Egan, and Muegge criteria. Furthermore, monomethylsulochrin can be used as a reference in the development of novel and therapeutically useful antileishmanial agents.
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Affiliation(s)
- João Victor Silva-Silva
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
- Laboratory of Medicinal and Computational Chemistry, Institute of Physics of São Carlos, University of São Paulo, São Carlos, SP, Brazil
| | | | | | | | - Daiana de Jesus Hardoim
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | | | - Alvaro Luiz Bertho
- Flow Cytometry Core Facility, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro, RJ, Brazil
- Laboratory of Immunoparasitology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
| | - Kerolain Faoro Teixeira
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau, SC, Brazil
| | - Arthur Ribeiro Cenci
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau, SC, Brazil
| | - Thiago Henrique Doring
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau, SC, Brazil
| | - José Wilmo da Cruz Júnior
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau, SC, Brazil
| | - Aldo Sena de Oliveira
- Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau, SC, Brazil
| | | | - Kátia da Silva Calabrese
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
- *Correspondence: Kátia da Silva Calabrese, ; Andrey Moacir do Rosario Marinho,
| | - Andrey Moacir do Rosario Marinho
- Post-graduate Program in Chemistry, Federal University of Pará, Belém, PA, Brazil
- *Correspondence: Kátia da Silva Calabrese, ; Andrey Moacir do Rosario Marinho,
| | - Fernando Almeida-Souza
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil
- Post-Graduate in Animal Sciences, State University of Maranhão, São Luís, Maranhão, Brazil
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Essential Oils and Melatonin as Functional Ingredients in Dogs. Animals (Basel) 2022; 12:ani12162089. [PMID: 36009679 PMCID: PMC9405278 DOI: 10.3390/ani12162089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/07/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Phytogenics are plant-based compounds with beneficial actions in feed technology and/or animal health. These so-called plant secondary metabolites are very diverse and with wide possible applications in humans and animals. Among them, essential oils (EOs) are the most used in feed for livestock and pets. Lately, melatonin has acquired new and interesting applications in dogs. Recent studies using EOs and/or melatonin in dog feeding and their involvement in health aspects are presented. Abstract The use of nutraceuticals or functional ingredients is increasingly widespread in human food; their use is also widespread in animal feed. These natural compounds generally come from plant materials and comprise a wide range of substances of a very diverse chemical nature. In animals, these compounds, so-called phytogenics, are used to obtain improvements in feed production/stability and also as functional components with repercussions on animal health. Along with polyphenols, isoprenoid compounds represent a family of substances with wide applications in therapy and pet nutrition. Essential oils (EOs) are a group of complex substances with fat-soluble nature that are widely used. Melatonin is an indolic amine present in all living with amphiphilic nature. In this work, we present a review of the most relevant phytogenics (polyphenol, isoprenoid, and alkaloid compounds), their characteristics, and possible uses as nutraceuticals in dogs, with special emphasis on EOs and their regulatory aspects, applied in foods and topically. Additionally, a presentation of the importance of the use of melatonin in dogs is developed, giving physiological and practical aspects about its use in dog feeding and also in topical application, with examples and future projections. This review points to the combination of EOs and melatonin in food supplements and in the topical application as an innovative product and shows excellent perspectives aimed at addressing dysfunctions in pets, such as the treatment of stress and anxiety, sleep disorders, alopecia, and hair growth problems, among others.
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Nooshadokht M, Mirzaei M, Sharifi I, Sharifi F, Lashkari M, Amirheidari B. In silico and in vitro antileishmanial effects of gamma-terpinene: Multifunctional modes of action. Chem Biol Interact 2022; 361:109957. [PMID: 35472413 DOI: 10.1016/j.cbi.2022.109957] [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: 01/25/2022] [Revised: 03/31/2022] [Accepted: 04/20/2022] [Indexed: 11/03/2022]
Abstract
INTRODUCTION Leishmaniasis denotes a significant health challenge worldwide with no ultimate treatment. The current study investigated the biological effects of gamma-terpinene (GT) on Leishmania major in putative antileishmanial action, cytotoxicity, apoptosis induction, gene expression alteration, antioxidant activity, hemolysis, and ROS generation. METHODS GT and meglumine antimoniate (MA) were probed alone and in combination (GT/MA) for their anti-leishmanial potentials using the MTT biochemical colorimetric assay and a model macrophage cell. In addition, their immunomodulatory properties were assessed by analyzing their effect on the transcription of cytokines related to Th1 and Th2 responses. GT and MA, alone and in combination, were also assessed for their potential to alter metacaspase gene expression in L. major promastigotes by real-time RT-PCR. The hemolytic potential of GT and MA-treated promastigotes were also measured by routine UV absorbance reading. Electrophoresis on agarose gel was employed to analyze genomic DNA fragmentation. RESULTS GT demonstrated notable dose-dependent antileishmanial effects towards promastigotes and amastigotes of L. major. The IC50 values for GT against L. major promastigotes and amastigotes were 46.76 mM and 25.89 mM, respectively. GT was considerably safer towards murine macrophages than L. major amastigotes with an SI value of 3.17. Transcriptional expression of iNOS, JAK-1, Interleukin (IL-10), and TGF-β was meaningfully decreased, while the levels of metacaspase mRNA were increased. Results also confirmed GT antioxidant activities. Also, increased levels of intracellular ROS were observed upon treatment of promastigotes with GT. The gel electrophoresis result indicated slight DNA fragmentation in the treated promastigotes by both drugs. A weak hemolytic effect was also observed for GT. CONCLUSION The results demonstrated that GT showed potent activity against L. major stages. It seems that its mechanism of action involves representing an immunomodulatory role towards upregulation of iNOS and JAK-1, while downregulation of IL-10 and TGF- β. Moreover, GT has an antioxidative potential and exerts its action through activating macrophages to kill the organism. Further in vivo and clinical studies are essential to explore its effect in future programs.
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Affiliation(s)
- Maryam Nooshadokht
- Pathobiology Department, Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran; Leishmaniasis Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Mirzaei
- Pathobiology Department, Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Iraj Sharifi
- Leishmaniasis Research Center, Kerman University of Medical Sciences, Kerman, Iran.
| | - Fatemeh Sharifi
- Research Center of Tropical and Infectious Diseases Kerman University of Medical Sciences, Kerman, Iran
| | - Mahla Lashkari
- Cell Therapy and Regenerative Medicine Comprehensive Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Bagher Amirheidari
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran; Extremophile and Productive Microorganisms Research Center, Kerman University of Medical Sciences, Kerman, Iran.
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Islamuddin M, Ali A, Afzal O, Ali A, Ali I, Altamimi AS, Alamri MA, Kato K, Parveen S. Thymoquinone Induced Leishmanicidal Effect via Programmed Cell Death in Leishmania donovani. ACS OMEGA 2022; 7:10718-10728. [PMID: 35382308 PMCID: PMC8973115 DOI: 10.1021/acsomega.2c00467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 03/02/2022] [Indexed: 05/08/2023]
Abstract
Visceral leishmaniasis (VL) or kala-azar is a vector-borne dreaded protozoal infection that is caused by the parasite Leishmania donovani. With increases in the dramatic infection rates, present drug toxicity, resistance, and the absence of an approved vaccine, the development of new antileishmanial compounds from plant sources remains the keystone for the control of visceral leishmaniasis. In this study, we evaluated the leishmanicidal effect of thymoquinone against L. donovani with an in vitro and ex vivo model. Thymoquinone exhibited potent antipromastigote activity with IC50 and IC90 concentrations achieved at 6.33 ± 1.21 and 20.71 ± 2.15 μM, respectively, whereas the IC50 and IC90 concentrations were found to be 7.83 ± 1.65 and 27.25 ± 2.20 μM against the intramacrophagic form of amastigotes, respectively. Morphological changes in promastigotes and growth reversibility study following treatment confirmed the leishmanicidal effect of thymoquinone. Further, thymoquinone exhibited leishmanicidal activities against L. donovani promastigote through cytoplasmic shrinkage, membrane blebbing, chromatin condensation, cellular and nuclear shrinkage, and DNA fragmentation, as observed under scanning and transmission electron microscopy analyses. The antileishmanial activity was exerted via programmed cell death as proved by exposure of phosphatidylserine, DNA nicking by TUNEL assay, and loss of mitochondrial membrane potential. Thymoquinone at a concentration of 200 μM was devoid of any cytotoxic effects against mammalian macrophage cells. Thymoquinone showed strong leishmanicidal activity against L. donovani, which is mediated via an apoptosis mode of parasitic cell death, and accordingly, thymoquinone may be the source of a new lead molecule for the cure of VL.
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Affiliation(s)
- Mohammad Islamuddin
- Molecular
Virology Laboratory, Centre for Interdisciplinary Research in Basic
Sciences, Jamia Millia Islamia, New Delhi 110025, India
- Laboratory
of Sustainable Animal Environment, Graduate School of Agricultural
Science, Tohoku University, Miyagi 989-6711, Japan
| | - Abuzer Ali
- Department
of Pharmacognosy, College of Pharmacy, Taif
University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Obaid Afzal
- Department
of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Amena Ali
- Department
of Pharmaceutical Chemistry, College of Pharmacy, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Intzar Ali
- Department
of Microbiology, Hamdard Institute of Medical
Sciences & Research, New Delhi 110062, India
| | | | - Mubarak A. Alamri
- Department
of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Kentaro Kato
- Laboratory
of Sustainable Animal Environment, Graduate School of Agricultural
Science, Tohoku University, Miyagi 989-6711, Japan
| | - Shama Parveen
- Molecular
Virology Laboratory, Centre for Interdisciplinary Research in Basic
Sciences, Jamia Millia Islamia, New Delhi 110025, India
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Silva-Silva JV, Moragas-Tellis CJ, Chagas MSS, Souza PVR, Moreira DL, Hardoim DJ, Taniwaki NN, Costa VFA, Bertho AL, Brondani D, Zapp E, de Oliveira AS, Calabrese KS, Behrens MD, Almeida-Souza F. Carajurin Induces Apoptosis in Leishmania amazonensis Promastigotes through Reactive Oxygen Species Production and Mitochondrial Dysfunction. Pharmaceuticals (Basel) 2022; 15:ph15030331. [PMID: 35337130 PMCID: PMC8948652 DOI: 10.3390/ph15030331] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 02/07/2023] Open
Abstract
Carajurin is the main constituent of Arrabidaea chica species with reported anti-Leishmania activity. However, its mechanism of action has not been described. This study investigated the mechanisms of action of carajurin against promastigote forms of Leishmania amazonensis. Carajurin was effective against promastigotes with IC50 of 7.96 ± 1.23 μg.mL−1 (26.4 µM), and the cytotoxic concentration for peritoneal macrophages was 258.2 ± 1.20 μg.mL−1 (856.9 µM) after 24 h of treatment. Ultrastructural evaluation highlighted pronounced swelling of the kinetoplast with loss of electron-density in L. amazonensis promastigotes induced by carajurin treatment. It was observed that carajurin leads to a decrease in the mitochondrial membrane potential (p = 0.0286), an increase in reactive oxygen species production (p = 0.0286), and cell death by late apoptosis (p = 0.0095) in parasites. Pretreatment with the antioxidant NAC prevented ROS production and significantly reduced carajurin-induced cell death. The electrochemical and density functional theory (DFT) data contributed to support the molecular mechanism of action of carajurin associated with the ROS generation, for which it is possible to observe a correlation between the LUMO energy and the electroactivity of carajurin in the presence of molecular oxygen. All these results suggest that carajurin targets the mitochondria in L. amazonensis. In addition, when assessed for its drug-likeness, carajurin follows Lipinski’’s rule of five, and the Ghose, Veber, Egan, and Muegge criteria.
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Affiliation(s)
- João Victor Silva-Silva
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil; (J.V.S.-S.); (D.J.H.); (F.A.-S.)
| | - Carla J. Moragas-Tellis
- Laboratory of Natural Products for Public Health, Pharmaceutical Technology Institute, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil; (C.J.M.-T.); (M.S.S.C.); (P.V.R.S.); (D.L.M.); (M.D.B.)
| | - Maria S. S. Chagas
- Laboratory of Natural Products for Public Health, Pharmaceutical Technology Institute, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil; (C.J.M.-T.); (M.S.S.C.); (P.V.R.S.); (D.L.M.); (M.D.B.)
| | - Paulo Victor R. Souza
- Laboratory of Natural Products for Public Health, Pharmaceutical Technology Institute, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil; (C.J.M.-T.); (M.S.S.C.); (P.V.R.S.); (D.L.M.); (M.D.B.)
- Postgraduate Program in Translational Research in Drugs and Medicines, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil
| | - Davyson L. Moreira
- Laboratory of Natural Products for Public Health, Pharmaceutical Technology Institute, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil; (C.J.M.-T.); (M.S.S.C.); (P.V.R.S.); (D.L.M.); (M.D.B.)
| | - Daiana J. Hardoim
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil; (J.V.S.-S.); (D.J.H.); (F.A.-S.)
| | - Noemi N. Taniwaki
- Electron Microscopy Nucleus, Adolfo Lutz Institute, Sao Paulo 01246-000, Brazil;
| | - Vanessa F. A. Costa
- Laboratory of Immunoparasitology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil; (V.F.A.C.); (A.L.B.)
| | - Alvaro L. Bertho
- Laboratory of Immunoparasitology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil; (V.F.A.C.); (A.L.B.)
- Flow Cytometry Technological Platform, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil
| | - Daniela Brondani
- Research Group on Medicinal and Biological Chemistry (GPQMedBio), Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau 89036-002, Brazil; (D.B.); (E.Z.); (A.S.d.O.)
| | - Eduardo Zapp
- Research Group on Medicinal and Biological Chemistry (GPQMedBio), Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau 89036-002, Brazil; (D.B.); (E.Z.); (A.S.d.O.)
| | - Aldo Sena de Oliveira
- Research Group on Medicinal and Biological Chemistry (GPQMedBio), Department of Exact Sciences and Education, Federal University of Santa Catarina, Blumenau 89036-002, Brazil; (D.B.); (E.Z.); (A.S.d.O.)
| | - Kátia S. Calabrese
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil; (J.V.S.-S.); (D.J.H.); (F.A.-S.)
- Correspondence: ; Tel.: +55-21-2562-1879
| | - Maria D. Behrens
- Laboratory of Natural Products for Public Health, Pharmaceutical Technology Institute, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil; (C.J.M.-T.); (M.S.S.C.); (P.V.R.S.); (D.L.M.); (M.D.B.)
| | - Fernando Almeida-Souza
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro 21040-900, Brazil; (J.V.S.-S.); (D.J.H.); (F.A.-S.)
- Postgraduate Program in Animal Science, State University of Maranhão, Sao Luis 65055-310, Brazil
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9
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Cohen A, Azas N. Challenges and Tools for In Vitro Leishmania Exploratory Screening in the Drug Development Process: An Updated Review. Pathogens 2021; 10:1608. [PMID: 34959563 PMCID: PMC8703296 DOI: 10.3390/pathogens10121608] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/03/2021] [Accepted: 12/07/2021] [Indexed: 12/13/2022] Open
Abstract
Leishmaniases are a group of vector-borne diseases caused by infection with the protozoan parasites Leishmania spp. Some of them, such as Mediterranean visceral leishmaniasis, are zoonotic diseases transmitted from vertebrate to vertebrate by a hematophagous insect, the sand fly. As there is an endemic in more than 90 countries worldwide, this complex and major health problem has different clinical forms depending on the parasite species involved, with the visceral form being the most worrying since it is fatal when left untreated. Nevertheless, currently available antileishmanial therapies are significantly limited (low efficacy, toxicity, adverse side effects, drug-resistance, length of treatment, and cost), so there is an urgent need to discover new compounds with antileishmanial activity, which are ideally inexpensive and orally administrable with few side effects and a novel mechanism of action. Therefore, various powerful approaches were recently applied in many interesting antileishmanial drug development programs. The objective of this review is to focus on the very first step in developing a potential drug and to identify the exploratory methods currently used to screen in vitro hit compounds and the challenges involved, particularly in terms of harmonizing the results of work carried out by different research teams. This review also aims to identify innovative screening tools and methods for more extensive use in the drug development process.
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Affiliation(s)
- Anita Cohen
- IHU Méditerranée Infection, Aix Marseille University, IRD (Institut de Recherche pour le Développement), AP-HM (Assistance Publique—Hôpitaux de Marseille), SSA (Service de Santé des Armées), VITROME (Vecteurs—Infections Tropicales et Méditerranéennes), 13005 Marseille, France;
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10
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Ali R, Islamuddin M, Tabrez S, Alsaweed M, Alaidarous MA, Alshehri BM, Banawas S, Bin Dukhyil AA, Rub A. Embilica officinalis L. inhibits the growth and proliferation of Leishmania donovani through the induction of ultrastructural changes, mitochondrial dysfunction, oxidative stress and apoptosis-like cell death. Biomed Pharmacother 2021; 143:112156. [PMID: 34649333 DOI: 10.1016/j.biopha.2021.112156] [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: 08/05/2021] [Revised: 08/25/2021] [Accepted: 09/01/2021] [Indexed: 12/22/2022] Open
Abstract
Visceral leishmaniasis (VL) is caused by a protozoan parasite, Leishmania donovani (L. donovani). It affects around 1-2 million people around the world annually. There is an urgent need to investigate new medicament of it due to difficult method of drug administration, long period of treatment, high cost of the drug, adverse side-effects, low efficacy and development of parasite resistance to the available drugs. Medicinal plants have also been used for the treatment of different diseases in traditional system of medicines due to their holistic effects. The Drugs for Neglected Diseases initiative (DNDi), Geneva, Switzerland has already started the program for identification of potential medicinal plant and plant products having antileishmanial potential. Keeping all these in consideration, we planned to study the antileishmanial activity of one of the medicinal plant, Embilica officinalis L. (EO) fruit extract. EO fruit extract inhibited the growth and proliferation of promastigotes as well as intra-macrophagic amastigotes in dose-dependent manner. EO fruit extract induced morphological and ultrastructural changes in parasites as observed under Electron Microscope. It also induced the oxidative stress, mitochondrial dysfunction, DNA laddering and apotosis-like cell death in parasites. Here, we for the first time reported such a detailed mechanism of action of antileishmanial activity of EO fruit extract. Our results suggested that EO fruit extract could be used for the development of new phytomedicine against leishmaniasis.
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Affiliation(s)
- Rahat Ali
- Infection and Immunity Lab (414), Department of Biotechnology, Jamia Millia Islamia (A Central University), New Delhi 110025, India
| | - Mohammad Islamuddin
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia (A Central University), New Delhi 110025, India
| | - Shams Tabrez
- Infection and Immunity Lab (414), Department of Biotechnology, Jamia Millia Islamia (A Central University), New Delhi 110025, India
| | - Mohammed Alsaweed
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Al Majmaah 11952, Saudi Arabia
| | - Mohammed A Alaidarous
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Al Majmaah 11952, Saudi Arabia
| | - Bader Mohammed Alshehri
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Al Majmaah 11952, Saudi Arabia
| | - Saeed Banawas
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Al Majmaah 11952, Saudi Arabia
| | - Abdul Aziz Bin Dukhyil
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Al Majmaah 11952, Saudi Arabia
| | - Abdur Rub
- Infection and Immunity Lab (414), Department of Biotechnology, Jamia Millia Islamia (A Central University), New Delhi 110025, India.
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11
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Amentoflavone isolated from Selaginella sellowii Hieron induces mitochondrial dysfunction in Leishmania amazonensis promastigotes. Parasitol Int 2021; 86:102458. [PMID: 34509671 DOI: 10.1016/j.parint.2021.102458] [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: 06/29/2021] [Revised: 08/26/2021] [Accepted: 09/06/2021] [Indexed: 11/21/2022]
Abstract
Leishmaniasis chemotherapy is a bottleneck in disease treatment. Although available, chemotherapy is limited, toxic, painful, and does not lead to parasite clearance, with parasite resistance also being reported. Therefore, new therapeutic options are being investigated, such as plant-derived anti-parasitic compounds. Amentoflavone is the most common biflavonoid in the Selaginella genus, and its antileishmanial activity has already been described on Leishmania amazonensis intracellular amastigotes but its direct action on the parasite is controversial. In this work we demonstrate that amentoflavone is active on L. amazonensis promastigotes (IC50 = 28.5 ± 2.0 μM) and amastigotes. Transmission electron microscopy of amentoflavone-treated promastigotes showed myelin-like figures, autophagosomes as well as enlarged mitochondria. Treated parasites also presented multiple lipid droplets and altered basal body organization. Similarly, intracellular amastigotes presented swollen mitochondria, membrane fragments in the lumen of the flagellar pocket as well as autophagic vacuoles. Flow cytometric analysis after TMRE staining showed that amentoflavone strongly decreased mitochondrial membrane potential. In silico analysis shows that amentoflavone physic-chemical, drug-likeness and bioavailability characteristics suggest it might be suitable for oral administration. We concluded that amentoflavone presents a direct effect on L. amazonensis parasites, causing mitochondrial dysfunction and parasite killing. Therefore, all results point for the potential of amentoflavone as a promising candidate for conducting advanced studies for the development of drugs against leishmaniasis.
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12
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Silva-Silva JV, Moragas-Tellis CJ, Chagas MDSDS, de Souza PVR, de Souza CDSF, Hardoim DDJ, Taniwaki NN, Moreira DDL, Dutra Behrens M, Calabrese KDS, Almeida-Souza F. Antileishmanial Activity of Flavones-Rich Fraction From Arrabidaea chica Verlot (Bignoniaceae). Front Pharmacol 2021; 12:703985. [PMID: 34354593 PMCID: PMC8329660 DOI: 10.3389/fphar.2021.703985] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 07/06/2021] [Indexed: 12/15/2022] Open
Abstract
Acknowledging the need of identifying new compounds for the treatment of leishmaniasis, this study aimed to evaluate, from in vitro trials, the activity of flavones from Arrabidaea chica against L. amazonensis. The chromatographic profiles of the hydroethanolic extract and a flavone-rich fraction (ACFF) from A. chica were determined by high-performance liquid chromatography coupled with a diode-array UV-Vis detector (HPLC-DAD-UV) and electrospray ionization mass spectrometry in tandem (LC-ESI-MS-MS). The flavones luteolin (1) and apigenin (2), isolated from chromatographic techniques and identified by Nuclear Magnetic Resonance of 1H and 13C, were also quantified in ACFF, showing 190.7 mg/g and apigenin 12.4 mg/g, respectively. The other flavones were identified by comparing their spectroscopic data with those of the literature. The in vitro activity was assayed against promastigotes and intramacrophagic amastigote forms of L. amazonensis. Cytotoxicity tests were performed with peritoneal macrophages of BALB/c mice. Nitrite quantification was performed with Griess reagent. Ultrastructural investigations were obtained by transmission electron microscopy. Anti-Leishmania assays indicated that the IC50 values for ACFF, apigenin, and luteolin were obtained at 40.42 ± 0.10 and 31.51 ± 1.13 μg/mL against promastigotes, respectively. ACFF and luteolin have concentration-dependent cytotoxicity. ACFF and luteolin also inhibited the intra-macrophagic parasite (IC50 3.575 ± 1.13 and 11.78 ± 1.24 μg/mL, respectively), with a selectivity index of 11.44 for ACFF. Promastigotes exposed to ACFF and luteolin exhibited ultrastructural changes, such as intense cytoplasm vacuolization and mitochondrial swelling. These findings data evidence the antileishmanial action of flavone-rich fractions of A. chica against L. amazonensis, encouraging further studies.
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Affiliation(s)
- João Victor Silva-Silva
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Carla Junqueira Moragas-Tellis
- Laboratory of Natural Products for Public Health, Pharmaceutical Techonology Institute - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Maria do Socorro Dos Santos Chagas
- Laboratory of Natural Products for Public Health, Pharmaceutical Techonology Institute - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Paulo Victor Ramos de Souza
- Laboratory of Natural Products for Public Health, Pharmaceutical Techonology Institute - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.,Student on Postgraduate Program in Translational Research in Drugs and Medicines, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | - Daiana de Jesus Hardoim
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | - Davyson de Lima Moreira
- Laboratory of Natural Products for Public Health, Pharmaceutical Techonology Institute - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Maria Dutra Behrens
- Laboratory of Natural Products for Public Health, Pharmaceutical Techonology Institute - Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Kátia da Silva Calabrese
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Fernando Almeida-Souza
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.,Postgraduate in Animal Science, State University of Maranhão, São Luís, Brazil
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13
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Carneiro LSA, Almeida-Souza F, Lopes YSC, Novas RCV, Santos KBA, Ligiero CBP, Calabrese KDS, Buarque CD. Synthesis of 3-aryl-4-(N-aryl)aminocoumarins via photoredox arylation and the evaluation of their biological activity. Bioorg Chem 2021; 114:105141. [PMID: 34328862 DOI: 10.1016/j.bioorg.2021.105141] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/22/2021] [Accepted: 06/29/2021] [Indexed: 01/02/2023]
Abstract
A new series of 3-aryl-4-(N-aryl)aminocoumarins was synthesized in two steps starting from the natural product 4-hydroxycoumarin using the photoredox catalysis for the key step. These conditions reactions allowed to make CC bonds is up to 95% yields in mild conditions, easy operation, in an environmentally benign way, and are compatible with several patterns of substitution. The biological activity of the new compounds was tested in vitro against MCF-7, MDA-MB-231, and CCD-1072Sk cancer cell lines, as soon as to promastigotes and intracellular amastigotes of Leishmania amazonensis. Compounds 17d, 17s and 17x showed activity against promastigote forms (IC50 = 5.96 ± 3.210, 9.05 ± 2.855 and 5.65 ± 2.078 μM respectively), and compound 17x presented the best activity against L. amazonensis amastigote intracellular form (IC50 = 9.6 ± 1.148 μM), no BALB/c peritoneal macrophage cytotoxicity at assayed concentrations (CC50 > 600 μM), and high selectivity to parasites over the mammalian cells (Selectivity Index > 62.2). There was no expressive activity for the cancer cell lines. Single crystal X-ray diffraction analysis was employed for structural elucidation of compounds 17a and 17s. In silico analyses of physicochemical, pharmacokinetic, and toxicological properties suggest that compound 17x is a potential candidate for anti-leishmaniasis drugs.
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Affiliation(s)
- Leonardo S A Carneiro
- Departmento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente 225, sala 576L, Gávea, Rio de Janeiro, RJ 20551-031, Brazil
| | - Fernando Almeida-Souza
- Pós-graduação em Ciência Animal, Universidade Estadual do Maranhão (UEMA), Cidade Universitária Paulo VI, São Luís, MA 65055-310, Brazil; Laboratório de Imunomodulação e Protozoologia, Instituto Oswaldo Cruz (Fiocruz), Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
| | - Yanne S C Lopes
- Departmento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente 225, sala 576L, Gávea, Rio de Janeiro, RJ 20551-031, Brazil
| | - Rachel C V Novas
- Departmento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente 225, sala 576L, Gávea, Rio de Janeiro, RJ 20551-031, Brazil
| | - Kaique B A Santos
- Laboratório de Imunomodulação e Protozoologia, Instituto Oswaldo Cruz (Fiocruz), Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
| | - Carolina B P Ligiero
- Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Av. Athos da Silveira Ramos, 149, CT, Bl. A-622, Cid. Universitária, Ilha do Fundão, Rio de Janeiro, RJ 21941-909, Brazil
| | - Kátia da S Calabrese
- Laboratório de Imunomodulação e Protozoologia, Instituto Oswaldo Cruz (Fiocruz), Av. Brasil 4365, Manguinhos, Rio de Janeiro, RJ, 21040-900, Brazil
| | - Camilla D Buarque
- Departmento de Química, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marquês de São Vicente 225, sala 576L, Gávea, Rio de Janeiro, RJ 20551-031, Brazil.
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Inhibitory Effect of Catechin-Rich Açaí Seed Extract on LPS-Stimulated RAW 264.7 Cells and Carrageenan-Induced Paw Edema. Foods 2021; 10:foods10051014. [PMID: 34066479 PMCID: PMC8148186 DOI: 10.3390/foods10051014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 11/17/2022] Open
Abstract
Açaí berry is a fruit from the tree commonly known as açaízeiro (Euterpe oleracea Mart.) originated from the Amazonian region and widely consumed in Brazil. There are several reports of the anti-inflammatory activity of its pulp and few data about the seed's potential in inflammation control. This work aimed to evaluate the effect of catechin-rich açaí extract on lipopolysaccharide (LPS)-stimulated RAW 264.7 cells and carrageenan-induced paw edema. The treatment with E. oleracea ethyl acetate extract (EO-ACET) was used in an in vitro model performed with macrophages stimulated by LPS, in which pro-inflammatory markers were evaluated, and in an in vivo model of acute inflammation, in which edema inhibition was evaluated. EO-ACET showed an absence of endotoxins, and did not display cytotoxic effects in RAW 264.7 cells. LPS-stimulated cells treated with EO-ACET displayed low levels of nitrite and interleukins (IL's), IL-1β, IL-6 and IL-12, when compared to untreated cells. EO-ACET treatment was able to inhibit carrageenan-induced paw edema at 500 and 1000 mg/kg, in which no acute inflammatory reaction or low mast cell counts were observed by histology at the site of inoculation of λ-carrageenan. These findings provide more evidence to support further studies with E. oleracea seeds for the treatment of inflammation.
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