Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12494/33487
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Title: The Hydroalcoholic Extract of Uncaria tomentosa (Cat’s Claw) Inhibits the Infection of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) In Vitro
Author: Zapata, Wildeman
Rugeles, Maira T.
Yepes, Lina
Zapata, María I.
Florez, Lizdany
Aguilar Jimenez, Wbeimar
Oliveros, Cristian
Yepes-Perez, Andres
Herrera-Calderon, Oscar
Email autor: wildeman.zapatab@campusucc.edu.co
metadata.dc.description.cvlac: https://scienti.minciencias.gov.co/cvlac/EnProdArticulo/query.do?cod_producto=73&cod_rh=0000157775
Issue Date: 24-Feb-2021
Advisor / Validator: Zapata, Wildeman
Keywords: SARS-CoV-2
COVID-19
Uncaria tomentosa
Cat´s claw
Antivirals
Severe acute respiratory syndrome coronavirus 2
Resume: 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, 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 48h 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 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 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 antiviral effect against SARS-CoV-2 observed as a reduction in the viral titer and CPE after 48h of treatment on Vero E6 cells. Therefore, we hypothesized that U. tomentosa stem bark, could be promissory to the development of new therapeutic strategies against SARS-CoV-2.
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, 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 48h 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 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 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 antiviral effect against SARS-CoV-2 observed as a reduction in the viral titer and CPE after 48h of treatment on Vero E6 cells. Therefore, we hypothesized that U. tomentosa stem bark, could be promissory to the development of new therapeutic strategies against SARS-CoV-2.
Program: Medicina
Headquarters: Medellín
Type: Artículos Científicos
Citation: Yepes-Pérez, A. F., Herrera-Calderón, O., Oliveros, C. A., Flórez-Álvarez, L., Zapata-Cardona, M. I., Yepes, L., Aguilar-Jiménez, W., Rugeles, M. T. and Zapata, W. (2021). 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, vol. 2021, Article ID 6679761, 1-11. https://doi.org/10.1155/2021/6679761.
Resource reference: https://www.hindawi.com/journals/ecam/2021/6679761/
Appears in Collections:Medicina

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