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de Lima RC, Valente LMM, Familiar Macedo D, de-Oliveira-Pinto LM, dos Santos FB, Mazzei JL, Siani AC, Nunes PCG, de Azeredo EL. Antiviral and Virucidal Activities of Uncaria tomentosa (Cat's Claw) against the Chikungunya Virus. Viruses 2024; 16:369. [PMID: 38543735 PMCID: PMC10974475 DOI: 10.3390/v16030369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/16/2024] [Accepted: 02/21/2024] [Indexed: 05/23/2024] Open
Abstract
Uncaria tomentosa (UT) is a medicinal plant popularly known as cat's claw belonging to the Rubiaceae family that has been reported to display antiviral and anti-inflammatory activities. The chikungunya virus (CHIKV) outbreaks constitute a Brazilian public health concern. CHIKV infection develops an abrupt onset of fever, usually accompanied by a skin rash, besides incapacitating polyarthralgia. There is no vaccine available or treatment for CHIKV infection. The present study evaluates the hydroalcoholic extract of UT bark as a potential antiviral against CHIKV. The in vitro antiviral activity of the UT extract against the Brazilian CHIKV strain was assessed using quantitative reverse transcription polymerase chain reaction, flow cytometry, and plaque assay. Results obtained demonstrated that UT inhibits CHIKV infection in a dose-dependent manner. At the non-cytotoxic concentration of 100 µg/mL, UT exhibited antiviral activity above 90% as determined by plaque reduction assay, and it reduced the viral cytopathic effect. Similarly, a significant virucidal effect of 100 µg/mL UT was observed after 24 and 48 h post-infection. This is the first report on the antiviral activity of UT against CHIKV infection, and the data presented here suggests UT as a potential antiviral to treat CHIKV infection.
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Affiliation(s)
- Raquel Curtinhas de Lima
- Laboratório das Interações Vírus Hospedeiros, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (R.C.d.L.); (D.F.M.); (L.M.d.-O.-P.); (F.B.d.S.); (P.C.G.N.)
| | - Ligia Maria Marino Valente
- Instituto de Química, Universidade Federal do Rio de Janeiro, Av. Athos da Silveira Ramos, 149, Rio de Janeiro 21941-909, Brazil;
| | - Débora Familiar Macedo
- Laboratório das Interações Vírus Hospedeiros, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (R.C.d.L.); (D.F.M.); (L.M.d.-O.-P.); (F.B.d.S.); (P.C.G.N.)
| | - Luzia Maria de-Oliveira-Pinto
- Laboratório das Interações Vírus Hospedeiros, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (R.C.d.L.); (D.F.M.); (L.M.d.-O.-P.); (F.B.d.S.); (P.C.G.N.)
| | - Flavia Barreto dos Santos
- Laboratório das Interações Vírus Hospedeiros, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (R.C.d.L.); (D.F.M.); (L.M.d.-O.-P.); (F.B.d.S.); (P.C.G.N.)
| | - José Luiz Mazzei
- Laboratório de Tecnologia para Biodiversidade em Saúde, Instituto de Tecnologia de Fármacos, Fundação Oswaldo Cruz, Rio de Janeiro 21041-250, Brazil; (J.L.M.); (A.C.S.)
| | - Antonio Carlos Siani
- Laboratório de Tecnologia para Biodiversidade em Saúde, Instituto de Tecnologia de Fármacos, Fundação Oswaldo Cruz, Rio de Janeiro 21041-250, Brazil; (J.L.M.); (A.C.S.)
| | - Priscila Conrado Guerra Nunes
- Laboratório das Interações Vírus Hospedeiros, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (R.C.d.L.); (D.F.M.); (L.M.d.-O.-P.); (F.B.d.S.); (P.C.G.N.)
| | - Elzinandes Leal de Azeredo
- Laboratório das Interações Vírus Hospedeiros, Instituto Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil; (R.C.d.L.); (D.F.M.); (L.M.d.-O.-P.); (F.B.d.S.); (P.C.G.N.)
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Computational Study of the Phytochemical Constituents from Uncaria tomentosa Stem Bark against SARS-CoV-2 Omicron Spike Protein. J CHEM-NY 2022. [DOI: 10.1155/2022/8539918] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The SARS-CoV-2 Omicron variant has spread rapidly and is considered the predominant variant in the world, and its main characteristic is related to evade immunity from natural infection or vaccines, due to its multiple mutations in the spike protein. On the other hand, medicinal plants have been used as alternatives therapies to ameliorate some signs and symptoms in COVID-19, and in our previous work, the cat’s claw (Uncaria tomentosa) stem bark has been studied in vitro and showed antiviral activity on SARS-CoV-2 as well as in silico studies on the 3CLpro protein and as disruptor between the ACE-2 human receptor and the spike protein. The aim in this computational study was to determine the main phytochemical constituents from U. tomentosa stem bark against the SARS-CoV-2 Omicron spike protein based on molecular modeling. A molecular docking was carried out on the isolated phytochemicals in a previous work against the SARS-CoV-2 Omicron spike protein-binding domain (PDB ID: 7T9K). Next, a molecular dynamic study was carried out to monitor the stability during the MD simulations. As results proanthocyanidin-C1 (-10.76 kcal/mol), quinovic acid-type 2 (-9.86 kcal/mol), and proanthocyanidin-B2 (-9.82 kcal/mol) were the constituents with the best binding free energy on the SARS-CoV-2 Omicron spike protein, and the best compound was stable during the dynamic simulation under physiological conditions. It is concluded that the anthocyanidin-based compounds determined in the stem bark ethanol extract could be responsible for the potential antiviral activity on SARS-CoV-2 Omicron variant, and the proanthocyanidin-C1 emerged as a powerful candidate to combat new variants.
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Feltrin C, Oliveira Simões CM, Marques Sincero TC. Development of a cell-based reporter assay for detection of Human alphaherpesviruses. Mol Cell Probes 2022; 62:101806. [DOI: 10.1016/j.mcp.2022.101806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 02/13/2022] [Accepted: 03/02/2022] [Indexed: 11/28/2022]
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Changes in Human Erythrocyte Membrane Exposed to Aqueous and Ethanolic Extracts from Uncaria tomentosa. Molecules 2021; 26:molecules26113189. [PMID: 34073461 PMCID: PMC8198037 DOI: 10.3390/molecules26113189] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/21/2021] [Accepted: 05/24/2021] [Indexed: 12/12/2022] Open
Abstract
Uncaria tomentosa (Willd.) DC is a woody climber species originating from South and Central America that has been used in the therapy of asthma, rheumatism, hypertension, and blood purification. Our previous study showed that U. tomentosa extracts altered human erythrocyte shape, which could be due to incorporation of the compounds contained in extracts into the erythrocyte membrane. The aim of the present study was to determine how the compounds contained in U. tomentosa extracts incorporate into the human erythrocyte membrane. The study has assessed the effect of aqueous and ethanolic extracts from leaves and bark of U. tomentosa on the osmotic resistance of the human erythrocyte, the viscosity of erythrocyte interior, and the fluidity of erythrocyte plasma membrane. Human erythrocytes were incubated with the studied extracts in the concentrations of 100, 250, and 500 µg/mL for 2, 5, and 24 h. All extracts tested caused a decrease in erythrocyte membrane fluidity and increased erythrocyte osmotic sensitivity. The ethanolic extracts from the bark and leaves increased viscosity of the erythrocytes. The largest changes in the studied parameters were observed in the cells incubated with bark ethanolic extract. We consider that the compounds from U. tomentosa extracts mainly build into the outer, hydrophilic monolayer of the erythrocyte membrane, thus protecting the erythrocytes against the adverse effects of oxidative stress.
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Amparo TR, Seibert JB, Almeida TC, Costa FSF, Silveira BM, da Silva GN, Dos Santos ODH, de Souza GHB. In silico approach of secondary metabolites from Brazilian herbal medicines to search for potential drugs against SARS-CoV-2. Phytother Res 2021; 35:4297-4308. [PMID: 33797123 PMCID: PMC8250981 DOI: 10.1002/ptr.7097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 12/16/2020] [Accepted: 02/24/2021] [Indexed: 12/29/2022]
Abstract
The new severe acute respiratory syndrome coronavirus (SARS‐CoV‐2) recently emerged as a worrying pandemic, with many confirmed cases and deaths globally. Therefore, there is a clear need for identifying effective therapeutic options and a review of secondary metabolites related to Brazilian herbal medicines was performed as a strategy for the discovery of new antiviral agents. To confirm this potential, an in silico screening of the identified compounds identified was also evaluated. The review was performed by the PubMed database and the selected natural compounds were subjected to in silico analysis such as QSAR, molecular docking and ADMET. 497 secondary metabolites were identified from 23 species. The in silico assays indicated 19 potential anti‐SARS‐CoV‐2 compounds, being triterpenes and phenolic compounds. The indicated compounds showed a high affinity with proteins considered as the main molecular targets against SARS‐CoV‐2 and parameters indicated low toxicity. In addition to Brazilian medicinal plants, these compounds can be found in other species and they can be a base for the synthesis of other anti‐COVID‐19 drugs. Therefore, this review is important to conduct researches that address the emerging need for drugs in COVID‐19 treatment.
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Affiliation(s)
- Tatiane R Amparo
- Laboratório de Fitotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Janaína B Seibert
- Laboratório de Fitotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Tamires C Almeida
- Laboratório de Pesquisas Clínicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Fernanda S F Costa
- Laboratório de Microbiologia Ambiental e Biotecnologia, Universidade Vila Velha, Vila Velha, Brazil
| | - Benila M Silveira
- Laboratório de Fitotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | - Glenda N da Silva
- Laboratório de Pesquisas Clínicas, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
| | | | - Gustavo H B de Souza
- Laboratório de Fitotecnologia, Universidade Federal de Ouro Preto, Ouro Preto, Brazil
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The Hydroalcoholic Extract of Uncaria tomentosa (Cat's Claw) Inhibits the Infection of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) In Vitro. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6679761. [PMID: 33680061 PMCID: PMC7929665 DOI: 10.1155/2021/6679761] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 01/11/2021] [Accepted: 02/02/2021] [Indexed: 12/13/2022]
Abstract
The coronavirus disease 2019 (COVID-19) has become a serious problem for public health since it was identified in the province of Wuhan (China) and spread around the world producing high mortality rates and economic losses. Nowadays, the WHO recognizes traditional, complementary, and alternative medicine for treating COVID-19 symptoms. Therefore, we investigated the antiviral potential of the hydroalcoholic extract of Uncaria tomentosa stem bark from Peru against SARS-CoV-2 in vitro. The antiviral activity of U. tomentosa against SARS-CoV-2 in vitro was assessed in Vero E6 cells using cytopathic effect (CPE) and plaque reduction assay. After 48 h of treatment, U. tomentosa showed an inhibition of 92.7% of SARS-CoV-2 at 25.0 μg/mL (p < 0.0001) by plaque reduction assay on Vero E6 cells. In addition, U. tomentosa induced a reduction of 98.6% (p=0.02) and 92.7% (p=0.03) in the CPE caused by SARS-CoV-2 on Vero E6 cells at 25 μg/mL and 12.5 μg/mL, respectively. The EC50 calculated for the U. tomentosa extract by plaque reduction assay was 6.6 μg/mL (4.89–8.85 μg/mL) for a selectivity index of 4.1. The EC50 calculated for the U. tomentosa extract by TCID50 assay was 2.57 μg/mL (1.05–3.75 μg/mL) for a selectivity index of 10.54. These results showed that U. tomentosa, known as cat's claw, has an antiviral effect against SARS-CoV-2, which was observed as a reduction in the viral titer and CPE after 48 h of treatment on Vero E6 cells. Therefore, we hypothesized that U. tomentosa stem bark could be promising in the development of new therapeutic strategies against SARS-CoV-2.
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Yepes-Pérez AF, Herrera-Calderon O, Quintero-Saumeth J. Uncaria tomentosa (cat's claw): a promising herbal medicine against SARS-CoV-2/ACE-2 junction and SARS-CoV-2 spike protein based on molecular modeling. J Biomol Struct Dyn 2020; 40:2227-2243. [PMID: 33118480 PMCID: PMC7657399 DOI: 10.1080/07391102.2020.1837676] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
COVID-19 is a novel severe acute respiratory syndrome coronavirus. Currently, there is no effective treatment and vaccines seem to be the solution in the future. Virtual screening of potential drugs against the S protein of severe acute respiratory syndrome corona virus 2 (SARS-CoV-2) has provided small molecular compounds with a high binding affinity. Unfortunately, most of these drugs do not attach with the binding interface of the receptor-binding domain (RBD)–angiotensin-converting enzyme-2 (ACE-2) complex in host cells. Molecular modeling was carried out to evaluate the potential antiviral properties of the components of the medicinal herb Uncaria tomentosa (cat’s claw) focusing on the binding interface of the RBD–ACE-2 and the viral spike protein. The in silico approach starts with protein–ligand docking of 26 Cat’s claw key components followed by molecular dynamics simulations and re-docked calculations. Finally, we carried out drug-likeness calculations for the most qualified cat’s claw components. The structural bioinformatics approaches led to the identification of several bioactive compounds of U. tomentosa with potential therapeutic effect by dual strong interaction with interface of the RBD–ACE-2 and the ACE-2 binding site on SARS-CoV-2 RBD viral spike. In addition, in silico drug-likeness indices for these components were calculated and showed good predicted therapeutic profiles of these phytochemicals found in U. tomentosa (cat’s claw). Our findings suggest the potential effectiveness of cat’s claw as complementary and/or alternative medicine for COVID-19 treatment. Communicated by Ramaswamy H. Sarma
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Affiliation(s)
- Andres F Yepes-Pérez
- Chemistry of Colombian Plants, Institute of Chemistry, Faculty of Exact and Natural Sciences, University of Antioquia-UdeA, Medellin, Colombia
| | - Oscar Herrera-Calderon
- Academic Department of Pharmacology Bromatology and Toxicology,Faculty of Pharmacy and Biochemistry, Universidad Nacional Mayor de San Marcos, Lima, Peru
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Yepes-Pérez AF, Herrera-Calderon O, Sánchez-Aparicio JE, Tiessler-Sala L, Maréchal JD, Cardona-G W. Investigating Potential Inhibitory Effect of Uncaria tomentosa (Cat's Claw) against the Main Protease 3CL pro of SARS-CoV-2 by Molecular Modeling. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2020; 2020:4932572. [PMID: 33029165 PMCID: PMC7532411 DOI: 10.1155/2020/4932572] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/25/2020] [Indexed: 12/13/2022]
Abstract
COVID-19 is a disease caused by severe acute respiratory syndrome coronavirus 2. Presently, there is no effective treatment for COVID-19. As part of the worldwide efforts to find efficient therapies and preventions, it has been reported the crystalline structure of the SARS-CoV-2 main protease Mpro (also called 3CLpro) bound to a synthetic inhibitor, which represents a major druggable target. The druggability of Mpro could be used for discovering drugs to treat COVID-19. A multilevel computational study was carried out to evaluate the potential antiviral properties of the components of the medicinal herb Uncaria tomentosa (Cat's claw), focusing on the inhibition of Mpro. The in silico approach starts with protein-ligand docking of 26 Cat's claw key components, followed by ligand pathway calculations, molecular dynamics simulations, and MM-GBSA calculation of the free energy of binding for the best docked candidates. The structural bioinformatics approaches led to identification of three bioactive compounds of Uncaria tomentosa (speciophylline, cadambine, and proanthocyanidin B2) with potential therapeutic effects by strong interaction with 3CLpro. Additionally, in silico drug-likeness indices for these components were calculated and showed good predicted therapeutic profiles of these phytochemicals. Our findings suggest the potential effectiveness of Cat's claw as complementary and/or alternative medicine for COVID-19 treatment.
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Affiliation(s)
- Andres F. Yepes-Pérez
- Chemistry of Colombian Plants, Institute of Chemistry, Faculty of Exact and Natural Sciences, University of Antioquia-UdeA, Calle 70 No. 52-21, A.A 1226, Medellin, Colombia
| | - Oscar Herrera-Calderon
- Academic Department of Pharmacology, Bromatology and Toxicology, Faculty of Pharmacy and Biochemistry, Universidad Nacional Mayor de San Marcos, Jr Puno 1002, Lima 15001, Peru
| | - José-Emilio Sánchez-Aparicio
- Insilichem, Departament de Química, Universitat Autònoma de Barcelona, Edifici C.n., 08193 Cerdanyola del Vallés, Barcelona, Spain
| | - Laura Tiessler-Sala
- Insilichem, Departament de Química, Universitat Autònoma de Barcelona, Edifici C.n., 08193 Cerdanyola del Vallés, Barcelona, Spain
| | - Jean-Didier Maréchal
- Insilichem, Departament de Química, Universitat Autònoma de Barcelona, Edifici C.n., 08193 Cerdanyola del Vallés, Barcelona, Spain
| | - Wilson Cardona-G
- Chemistry of Colombian Plants, Institute of Chemistry, Faculty of Exact and Natural Sciences, University of Antioquia-UdeA, Calle 70 No. 52-21, A.A 1226, Medellin, Colombia
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Uncaria tomentosa (Willd. ex Schult.) DC.: A Review on Chemical Constituents and Biological Activities. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10082668] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Uncaria tomentosa (Willd. ex Schult.) DC. (Family: Rubiaceae), commonly known as cat’s claw, is a tropical medicinal vine originating at the Amazon rainforest and other areas of South and Central America. It has been traditionally used to treat asthma, abscesses, fever, urinary tract infections, viral infections, and wounds and found to be effective as an immune system rejuvenator, antioxidant, antimicrobial, and anti-inflammatory agent. U. tomentosa is rich in many phytoconstituents such as oxindole and indole alkaloids, glycosides, organic acids, proanthocyanidins, sterols, and triterpenes. Biological activities of U. tomentosa have been examined against various microorganisms and parasites, including pathogenic bacteria, viruses, and Plasmodium, Babesia and Theileria parasites. Several formulations of cat’s claw (e.g., tinctures, decoctions, capsules, extracts, and teas) are recently available in the market. The current review covers the chemical constituents, biological activities, pharmacokinetics, and toxic properties of U. tomentosa extracts.
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The Use of Medicinal Plants in the Riverside Community of the Mazagão River in the Brazilian Amazon, Amapá, Brazil: Ethnobotanical and Ethnopharmacological Studies. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:6087509. [PMID: 31093296 PMCID: PMC6481105 DOI: 10.1155/2019/6087509] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 02/15/2019] [Accepted: 03/04/2019] [Indexed: 12/25/2022]
Abstract
The inhabitants of the floodplain of the Mazagão River in the State of Amapá in the Brazilian Amazon have inherited from indigenous African and Cabocla cultures indications for the use and forms of preparation of medicinal plants to cure diseases of the body and spirit. This study aimed to perform an ethnopharmacological survey of medicinal plants used by the riparian community of the floodplains of the Mazagão River, in the State of Amapá. In this study, we chose semistructured interviews with socioeconomic, ethnopharmacological, and ethnobotanical aims. The collection of medicinal plants occurred during guided tours. The Use Value (UV), Informant Consensus Factor (ICF), Correction Factor (CF), and Fidelity level (FL) were calculated. There were 130 species of medicinal plants, distributed in 116 genera and 57 families; Fabaceae (16), Lamiaceae (14), Euphorbiaceae (7), and Arecaceae (6) include 33.33% of the total species sampled. All 95 native species of floodplain forests were previously described, and 35 are exotic species. The species with the highest UV (≥ 0.5) at the mouth of the Mazagão River were Carapa guianensis (0.91), Pentachlethra macroloba (0.83), Dalbergia subcymosa (0.77), Uncaria tomentosa (0.75), Otacanthus azureus (0.62), Virola surinamensis (0.62), Hura crepitans (0.58), Euterpe oleracea (0.56), and Arrabidaea chica (0.51). These species were also the ones that presented the highest ICF among the informants and 100% in FL for a specific therapeutic use. The study is comprised of 16 categories of therapeutic use, of which the majority of the plants used are related to diseases such as microbial infections (20.67%, 73 species), gastrointestinal disorders (13.31%), and inflammation (11.61%). The results showed that knowledge about the use of medicinal plants along the rivers and streams that form the mouth of the Mazagão River is evenly distributed. Most of the interviewees present diversified knowledge about the medicinal resources because they have a close relationship with the floodplain forest. Native species of this forest predominate among the most commonly used medicinal plants as subsidies for future pharmacological studies.
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Churqui MP, Lind L, Thörn K, Svensson A, Savolainen O, Aranda KT, Eriksson K. Extracts of Equisetum giganteum L and Copaifera reticulate Ducke show strong antiviral activity against the sexually transmitted pathogen herpes simplex virus type 2. JOURNAL OF ETHNOPHARMACOLOGY 2018; 210:192-197. [PMID: 28807852 DOI: 10.1016/j.jep.2017.08.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 08/04/2017] [Accepted: 08/09/2017] [Indexed: 05/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Equisetum giganteum L and Copaifera reticulate Ducke have been traditionally used by women of the Tacana tribe in the Bolivian Amazonas for genital hygiene and for treatment of genital infection/inflammation. AIM OF THE STUDY To assess the ability of extracts from Equisetum giganteum L and Copaifera reticulate Ducke to block genital viral infection by herpes simplex virus type 2. MATERIALS AND METHODS Equisetum giganteum L and Copaifera reticulate Ducke were collected from the Amazon region of La Paz, Bolivia. Extracts were prepared and screened for anti-viral activity against herpes simplex virus type 2 (HSV-2) using both in vitro and in in vivo models of infection. RESULTS Equisetum giganteum L and Copaifera reticulate Ducke efficiently blocked HSV-2 infection of cell cultures without major cell cytotoxic effects. Extracts of Equisetum giganteum L and Copaifera reticulate Ducke could prevent HSV-2 disease development when administered together with virus in a mouse model of genital HSV-2 infection. In vitro analyses revealed that both plant extracts exerted their anti-HSV-2 effects by interfering with viral cell attachment and entry, but could not block viral replication post entry. CONCLUSIONS These studies show that extracts of Equisetum giganteum L and Copaifera reticulate Ducke have potent antiviral activities against HSV-2 comparable to those two previously identified plants, Croton lechleri Müll. Arg. and Uncaria tomentosa (Willd. ex Schult.) DC. These studies confirm that plants used by the Tacana tribe could be explored further for the development of novel topical antiviral microbicides.
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Affiliation(s)
- Marianela Patzi Churqui
- Department of Rheumatology & Inflammation research, Gothenburg University, Gothenburg, Sweden; Virology, Immunity and Infection Unity, SELADIS institute, Biochemistry and Pharmacy Faculty, Universidad Mayor de San Andres, La Paz, Bolivia
| | - Liza Lind
- Department of Rheumatology & Inflammation research, Gothenburg University, Gothenburg, Sweden
| | - Karolina Thörn
- Department of Rheumatology & Inflammation research, Gothenburg University, Gothenburg, Sweden
| | - Alexandra Svensson
- Department of Rheumatology & Inflammation research, Gothenburg University, Gothenburg, Sweden
| | - Otto Savolainen
- Chalmers Mass Spectrometry Infrastructure, Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Katty Terrazas Aranda
- Virology, Immunity and Infection Unity, SELADIS institute, Biochemistry and Pharmacy Faculty, Universidad Mayor de San Andres, La Paz, Bolivia
| | - Kristina Eriksson
- Department of Rheumatology & Inflammation research, Gothenburg University, Gothenburg, Sweden.
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Moraes RC, Carvalho AR, Lana AJD, Kaiser S, Pippi B, Fuentefria AM, Ortega GG. In vitro synergism of a water insoluble fraction of Uncaria tomentosa combined with fluconazole and terbinafine against resistant non-Candida albicans isolates. PHARMACEUTICAL BIOLOGY 2017; 55:406-415. [PMID: 27931150 PMCID: PMC6130498 DOI: 10.1080/13880209.2016.1242631] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 09/11/2016] [Accepted: 09/26/2016] [Indexed: 06/06/2023]
Abstract
CONTEXT Uncaria tomentosa D.C. (Rubiaceae) has several biological activities, including activity against resistant Candida strains. The synergistic interaction with terbinafine or fluconazole can be an important alternative to overcome this resistance. OBJECTIVES The potential synergy between a water insoluble fraction (WIF) from Uncaria tomentosa bark and the antifungals terbinafine (TRB) and fluconazole (FLZ) against non-Candida albicans resistant strains was investigated. MATERIALS AND METHODS TRB and FLZ, alone and combined with WIF, were tested by the checkerboard procedure using the micro-dilution technique against seven isolates of Candida glabrata and C. krusei. The molecular interactions occurring outside the cell wall were evaluated by scanning electron microscopy, Fourier transform infrared (FT-IR) and differential scanning calorimetry (DSC) analysis. RESULTS The checkerboard inhibitory assay demonstrated synergy for WIF:TRB and WIF:FLZ combinations, respectively. The best synergistic cell damage was demonstrated unequivocally for the associations of WIF and TRB (1.95:4.0 μg/mL) and WIF and FLZ (1.95:8.0 μg/mL). The comparison of the FT-IR spectra of the antifungal alone, and in combination with WIF, allows recognizing clear differences in 3000, 1600, 1400, and 700-800 cm-1 bands. Additionally, modifications on TRB and FLZ thermograms were clearly noticed after their combination with WIF. CONCLUSIONS DSC and infrared analysis demonstrated intermolecular interactions between WIF and either TRB or FLZ. Hence, quite likely the synergistic effect is related to interaction events occurring outside the cell wall between antifungal and cat's claw proanthocyanidins. A direct action on the cell wall is suggested, without connection with the ABC efflux pump mechanism.
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Affiliation(s)
- Renata Cougo Moraes
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Anderson Ramos Carvalho
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Aline Jacobi Dalla Lana
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Samuel Kaiser
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Bruna Pippi
- Post-Graduate Program in Agricultural and Environmental Microbiology (PPGMAA), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Alexandre Meneghello Fuentefria
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
- Post-Graduate Program in Agricultural and Environmental Microbiology (PPGMAA), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - George González Ortega
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
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Kour J, Ali MN, Ganaie HA, Tabassum N. Amelioration of the cyclophosphamide induced genotoxic damage in mice by the ethanolic extract of Equisetum arvense. Toxicol Rep 2017; 4:226-233. [PMID: 28959643 PMCID: PMC5615123 DOI: 10.1016/j.toxrep.2017.05.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 05/08/2017] [Accepted: 05/09/2017] [Indexed: 12/27/2022] Open
Abstract
Plants like E. arvense posess not only nutritional value but therapeutic value as well. CPA is an important chemotherapeutic agent but is associated with various mutagenic and other toxic side effects. Ethanolic extract of the plant has immense protective effect against the genotoxic damage induced by the cyclophosphamide. GC–MS analysis of the extract shows various important phyto components which may be associated with its antimutagenic property. Plant can be used in cancer as a chemopreventive agent or even as a coadjuvant to chemotherapy to reduce the side effects associated with it.
In the present study, we evaluated the potential of the plant E. arvense against the cytotoxic and mutagenic effects induced by cyclophosphamide (chemotherapeutic agent) in the bone marrow cells of mice using the Chromosome assay (CA) and Mitotic index (MI) in vivo as the biomarkers. The study was performed following 3 protocols: pre-treatment, simultaneous treatment and post-treatment with the ethanolic extract of the plant. The results demonstrated that the plant extract was not cytotoxic and mutagenic and has a protective effect against the mutagenicity induced by cyclophosphamide in pre, simultaneous and post treatments and against its cytotoxicity as well. Because of its ability to prevent chromosomal damage, E. arvense is likely to open an interesting field concerning its possible use in clinical applications, most importantly in cancer as a chemopreventive agent or even as a coadjuvant to chemotherapy to reduce the side effects associated with it.
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Affiliation(s)
- Jasbir Kour
- Cytogenetics & Molecular Biology Research Laboratory, Centre of Research for Development, University of Kashmir, Srinagar 190 006, JK, India
| | - Md Niamat Ali
- Cytogenetics & Molecular Biology Research Laboratory, Centre of Research for Development, University of Kashmir, Srinagar 190 006, JK, India
| | - Hilal Ahmad Ganaie
- Cytogenetics & Molecular Biology Research Laboratory, Centre of Research for Development, University of Kashmir, Srinagar 190 006, JK, India
| | - Nahida Tabassum
- Department of Pharmaceutical Sciences, University of Kashmir, Srinagar 190 006, JK, India
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14
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Kumar A, Banerjee N, Singamaneni V, K Dokuparthi S, Chakrabarti T, Mukhopadhyay S. Phytochemical investigations and evaluation of antimutagenic activity of the alcoholic extract of Glycosmis pentaphylla and Tabernaemontana coronaria by Ames test. Nat Prod Res 2017; 32:582-587. [DOI: 10.1080/14786419.2017.1318384] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ashish Kumar
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Nilanjana Banerjee
- Cell Biology & Physiology Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Venugopal Singamaneni
- National Institute of Pharmaceutical Education and Research, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Sudheer K Dokuparthi
- National Institute of Pharmaceutical Education and Research, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Tulika Chakrabarti
- Chemistry Division, Sir Padmapat Singhania University, Udaipur, Rajasthan, India
| | - Sibabrata Mukhopadhyay
- Organic & Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Kolkata, India
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15
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Rojas Rojas T, Bourdy G, Ruiz E, Cerapio JP, Pineau P, Gardon J, Doimi F, Deparis X, Deharo E, Bertani S. Herbal Medicine Practices of Patients With Liver Cancer in Peru: A Comprehensive Study Toward Integrative Cancer Management. Integr Cancer Ther 2016; 17:52-64. [PMID: 28088871 PMCID: PMC5950939 DOI: 10.1177/1534735416681642] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Rationale: The highest burden of liver cancer occurs in developing
countries, where the use of herbal medicine (HM) is still widespread. Despite
this trend, few studies have been conducted to report HM practices of patients
with a hepatic tumor in the developing world. Hence, this study aimed to
document the use of HM among patients with liver cancer in Peru. Study
Design and Methods: A comparative behavioral epidemiological survey
was conducted among liver cancer patients attending the National Cancer
Institute of Peru. Information was obtained by direct interviews based on a
semistructured questionnaire. The use of HM in Peruvian liver cancer patients
was reported, first, regarding general consumption prior to the onset of
disease, and second, after the appearance of symptoms that patients would relate
to their tumor. In parallel, general consumption of HM in noncancerous people
was assessed as a comparative figure. A correspondence analysis was performed to
reveal potential associations between the symptoms of cancer and the specific
use of HM. Results: Eighty-eight patients and 117 noncancerous
individuals participated in the survey. Overall, 68.3% of the people interviewed
claimed to use HM on a regular basis for general health preservation.
Furthermore, 56.8% of the patients turned to plants first to treat the disorders
for which they later came to the cancer care center. When compared with the
number of plant species used routinely (n = 78), a selection of plants was made
by patients in response to the symptoms of cancer (n = 46). At least 2 plant
species, Aloe vera and Morinda citrifolia,
were significantly associated with the treatment of liver cancer–related
symptoms in the patient group. Conclusions: The present study is
the first survey on the HM practices of patients with liver cancer in Latin
America and, more broadly, in the developing world. Our findings confirm that HM
remains one of the principal primary health care resources in Peru, even for a
severe disease like liver cancer. These traditional, complementary and
alternative medicine practices should be taken into consideration in Peruvian
health programs aiming to educate the population in cancer prevention and
treatment, as well as integrative cancer management.
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Affiliation(s)
| | | | - Eloy Ruiz
- 3 Instituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | - Juan-Pablo Cerapio
- 4 Sorbonne Universités, UPMC Univ Paris 06, Institut Pasteur, Paris, France
| | - Pascal Pineau
- 5 Institut Pasteur, Paris, France.,6 INSERM, U 993, Paris, France
| | - Jacques Gardon
- 7 Université de Montpellier, IRD, CNRS, UMR 5569, Montpellier, France
| | - Franco Doimi
- 3 Instituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | - Xavier Deparis
- 1 Aix-Marseille Université, IRD, INSERM, UMR 912, Marseille, France
| | - Eric Deharo
- 2 Université de Toulouse, IRD, UPS, UMR 152, Toulouse, France
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16
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Boff L, Silva IT, Argenta DF, Farias LM, Alvarenga LF, Pádua RM, Braga FC, Leite JPV, Kratz JM, Simões CMO. Strychnos pseudoquina A. St. Hil.: a Brazilian medicinal plant with promising in vitro antiherpes activity. J Appl Microbiol 2016; 121:1519-1529. [PMID: 27566664 DOI: 10.1111/jam.13279] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 07/22/2016] [Accepted: 08/22/2016] [Indexed: 11/29/2022]
Abstract
AIMS To investigate the anti-HSV and anti-inflammatory effects of a standardized ethyl acetate extract (SEAE) prepared with the stem bark of Strychnos pseudoquina, along with two isolated compounds: quercetin 3-O-methyl ether (3MQ) and strychnobiflavone (SBF). METHODS AND RESULTS The mechanisms of action were evaluated by different methodological strategies. SEAE and SBF affected the early stages of viral infection and reduced HSV-1 protein expression. Both flavonoids elicited a concentration-dependent inhibition of monocyte chemoattractant protein-1 (MCP-1), whereas 3MQ reduced the chemokine release more significantly than SBF. Conversely, both compounds stimulated the production of the cytokines TNF-α and IL-1-β in LPS-stimulated cells, especially at the intermediate and the highest tested concentrations. CONCLUSIONS SEAE and SBF interfered with various steps of HSV replication cycle, mainly adsorption, postadsorption and penetration, as well as with β and γ viral proteins expression; moreover, a direct inactivation of viral particles was observed. Besides, both flavonoids inhibited MCP-1 selectively, a feature that may be beneficial for the development of new anti-HSV agents. SIGNIFICANCE AND IMPACT OF THE STUDY The results indicated that the samples present anti-HSV and anti-inflammatory activities, at different levels, which is an interesting feature since cold and genital sores are accompanied by an inflammation process.
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Affiliation(s)
- L Boff
- Laboratório de Virologia Aplicada, Programa de Pós-graduação em Farmácia, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - I T Silva
- Laboratório de Virologia Aplicada, Programa de Pós-graduação em Farmácia, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - D F Argenta
- Laboratório de Virologia Aplicada, Programa de Pós-graduação em Farmácia, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - L M Farias
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa (UFV), Viçosa, MG, Brazil
| | - L F Alvarenga
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - R M Pádua
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - F C Braga
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, MG, Brazil
| | - J P V Leite
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa (UFV), Viçosa, MG, Brazil
| | - J M Kratz
- Laboratório de Virologia Aplicada, Programa de Pós-graduação em Farmácia, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
| | - C M O Simões
- Laboratório de Virologia Aplicada, Programa de Pós-graduação em Farmácia, Universidade Federal de Santa Catarina (UFSC), Florianópolis, SC, Brazil
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