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Onetto AL, Novosak MG, Winnik DL, Cortese IJ, Stockmanns PE, Oviedo PN, Laczeski ME. Screening of antimicrobial activity of Ilex paraguariensis St. Hil. leaf extracts against carbapenemase-producing bacteria. AN ACAD BRAS CIENC 2024; 96:e20221129. [PMID: 38922267 DOI: 10.1590/0001-3765202420221129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 09/21/2023] [Indexed: 06/27/2024] Open
Abstract
I. paraguariensis St. Hil. is a south American species of agronomic interest with studies supporting its medicinal properties. As the investigation of active ingredients with antimicrobial effect from medicinal plants is a suitable approach to the current antibacterial resistance problem, the aim of the present study was to determine the antibacterial activity of yerba mate ethanolic extracts against carbapenemase-producing gram-negative bacteria (reference strains and clinical isolates). Extracts showed antibacterial activity against Klebsiella pneumoniae ATCC® BAA-2342™ (KPC producing), Providencia rettgeri (NDM producing), Pseudomonas aeruginosa (MBL producing) and P. aeruginosa (VIM producing) at the concentrations tested. The Minimal-Inhibitory-Concentration and Minimal-Bactericidal-Concentration values ranged between 1 and 32 mg.ml-1 for the reference strains, and between 0.125 and 1 mg.ml-1 for the clinical isolates. The MBC/MIC index characterized the extracts as bactericidal. The combinations of commercial antibiotics and extracts showed a synergistic action on the reference strains studied. The lethal concentration 50 obtained using the Artemia salina toxicity assay were higher than 1 mg.ml-1 for all the extracts, indicating a low toxicity. The in vitro activity and low toxicity suggest that ethanolic I. paraguariensis leaf extracts constitute an outstanding source for new antibacterial compounds, and further studies should be carried out to understand their mechanism of action.
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Affiliation(s)
- Andrea Liliana Onetto
- Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto de Ciencias de la Salud de Misiones (InCiSMi), Departamento de Microbiología, Laboratorio de Bacteriología, Avda. Mariano Moreno 1375, CP 3300, Misiones, Argentina
- Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto de Biotecnología Misiones "Dra. María Ebe Reca" (InBioMis), Laboratorio de Biotecnología Molecular, Ruta 12 Km 7 1/2, CP 3304, Misiones, Argentina
- CONICET, Buenos Aires, Argentina
| | - Marina Gisel Novosak
- Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto de Ciencias de la Salud de Misiones (InCiSMi), Departamento de Microbiología, Laboratorio de Bacteriología, Avda. Mariano Moreno 1375, CP 3300, Misiones, Argentina
| | - Daniana Liliana Winnik
- Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto de Ciencias de la Salud de Misiones (InCiSMi), Departamento de Microbiología, Laboratorio de Bacteriología, Avda. Mariano Moreno 1375, CP 3300, Misiones, Argentina
| | - Iliana Julieta Cortese
- Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto de Ciencias de la Salud de Misiones (InCiSMi), Departamento de Microbiología, Laboratorio de Bacteriología, Avda. Mariano Moreno 1375, CP 3300, Misiones, Argentina
- Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto de Biotecnología Misiones "Dra. María Ebe Reca" (InBioMis), Laboratorio de Biotecnología Molecular, Ruta 12 Km 7 1/2, CP 3304, Misiones, Argentina
- CONICET, Buenos Aires, Argentina
| | - Patricia Elizabeth Stockmanns
- Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto de Ciencias de la Salud de Misiones (InCiSMi), Departamento de Microbiología, Laboratorio de Bacteriología, Avda. Mariano Moreno 1375, CP 3300, Misiones, Argentina
| | - Patricia Noemí Oviedo
- Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto de Ciencias de la Salud de Misiones (InCiSMi), Departamento de Microbiología, Laboratorio de Bacteriología, Avda. Mariano Moreno 1375, CP 3300, Misiones, Argentina
| | - Margarita Ester Laczeski
- Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto de Ciencias de la Salud de Misiones (InCiSMi), Departamento de Microbiología, Laboratorio de Bacteriología, Avda. Mariano Moreno 1375, CP 3300, Misiones, Argentina
- Universidad Nacional de Misiones, Facultad de Ciencias Exactas, Químicas y Naturales, Instituto de Biotecnología Misiones "Dra. María Ebe Reca" (InBioMis), Laboratorio de Biotecnología Molecular, Ruta 12 Km 7 1/2, CP 3304, Misiones, Argentina
- CONICET, Buenos Aires, Argentina
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de Moura C, Kabbas Junior T, Mendanha Cruz T, Boscacci Marques M, Araújo Vieira do Carmo M, Turnes Pasini Deolindo C, Daguer H, Azevedo L, Xu YQ, Granato D. Sustainable and effective approach to recover antioxidant compounds from purple tea (Camellia sinensis var. assamica cv. Zijuan) leaves. Food Res Int 2023; 164:112402. [PMID: 36737984 DOI: 10.1016/j.foodres.2022.112402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/20/2022] [Accepted: 12/24/2022] [Indexed: 01/01/2023]
Abstract
Camellia sinensis var. assamica cv. Zijuan (purple tea) is known for its content of anthocyanins, flavan-3-ols, and bioactivities. This study aimed to verify the influence of solvent polarity, in a solid-liquid extraction, on the content of phenolic compounds and chlorophylls, instrumental color, and antioxidant activity. Different proportions of water and ethanol (0:100, 25:75, 50:50, 75:25, and 100:0 v/v) were used for extraction. The results showed that the hydroalcoholic extract (75 % ethanol + 25 % water) had the highest contents of total flavonoids, total anthocyanins, chlorophyll A, and total carotenoids, as well as presenting the highest color intensity, proportion of yellow pigments, and antioxidant activity (total reducing capacity and scavenging of the DPPH free radical). Twenty-two compounds were identified, with chlorogenic acid, hesperidin, (-)-epicatechin, (-)-epigallocatechin gallate, and isoquercitrin being the main phenolics. This phenolic-rich extract inhibited lipoperoxidation induced in egg yolk homogenate (IC50 = 455 mg/L), showed no hemolytic behavior when human erythrocytes were subjected to osmotic stress, and exerted in vitro cytotoxic effects against cancer and hybrid cells. The extract obtained with the mixture of non-toxic solvents presented critical bioactivities, as well as a comprehensive identification of phenolic compounds in the cultivar, and has potential to be used in technological applications.
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Affiliation(s)
- Cristiane de Moura
- Department of Chemistry, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, PR, Brazil
| | - Tufy Kabbas Junior
- Department of Chemistry, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, PR, Brazil
| | - Thiago Mendanha Cruz
- Department of Chemistry, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, PR, Brazil
| | - Mariza Boscacci Marques
- Department of Chemistry, State University of Ponta Grossa (UEPG), Av. Carlos Cavalcanti, 4748, 84030-900, Ponta Grossa, PR, Brazil
| | | | - Carolina Turnes Pasini Deolindo
- Brazilian Ministry of Agriculture, Livestock, and Food Supply (MAPA), Federal Agricultural Defense Laboratory, 88102-600 São José, SC, Brazil
| | - Heitor Daguer
- Brazilian Ministry of Agriculture, Livestock, and Food Supply (MAPA), Federal Agricultural Defense Laboratory, 88102-600 São José, SC, Brazil
| | - Luciana Azevedo
- Nutrition Faculty, Federal University of Alfenas, Rua Gabriel Monteiro da Silva, 714, 37130-000 Alfenas, MG, Brazil
| | - Yong-Quan Xu
- Tea Research Institute, Chinese Academy of Agricultural Sciences, Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture and Rural Affairs, 9 South Meiling Road, Hangzhou 310008, China
| | - Daniel Granato
- Bioactivity & Applications Lab, Department of Biological Sciences, Faculty of Science and Engineering, School of Natural Sciences, University of Limerick, V94 T9PX Limerick, Ireland.
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Chen M, Xiao J, El-Seedi HR, Woźniak KS, Daglia M, Little PJ, Weng J, Xu S. Kaempferol and atherosclerosis: From mechanism to medicine. Crit Rev Food Sci Nutr 2022; 64:2157-2175. [PMID: 36099317 DOI: 10.1080/10408398.2022.2121261] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Natural products possess pleiotropic cardiovascular protective effects owing to their anti-oxidation, anti-inflammation and anti-thrombotic properties. Kaempferol, (3,5,7-trihydroxy-2-(4-hydroxyphenyl)-4H-1-benzopyran-4-one), is a kind of naturally occurring flavonoid existing in many common fruits and vegetables (e.g., onions, broccoli, strawberries and grapes) and particularly in traditional Chinese medicine as exemplified by Ginkgo biloba. Epidemiological, preclinical and clinical studies have revealed an inverse association between the consumption of kaempferol-containing foods and medicines and the risk of developing cardiovascular diseases. Numerous translational studies in experimental animal models and cultured cells have demonstrated a wide range of pharmacological activities of kaempferol. In this article, we reviewed the antioxidant, anti-inflammatory and cardio-protective activities of kaempferol and elucidated the potential molecular basis of the therapeutic capacity of kaempferol by focusing on its anti-atherosclerotic effects. Overall, the review presents the health benefits of kaempferol-containing plants and medicines and reflects on the potential of kaempferol as a possible drug candidate to prevent and treat atherosclerosis, the underlying pathology of most cardiovascular diseases.
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Affiliation(s)
- Meijie Chen
- Department of Endocrinology, Institute of Endocrine and Metabolic Diseases, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Clinical Research Hospital of Chinese Academy of Sciences (Hefei), University of Science and Technology of China, Hefei, Anhui, China
| | - Jianbo Xiao
- Department of Analytical Chemistry and Food Science, University of Vigo, Vigo, Spain
| | - Hesham R El-Seedi
- Pharmacognosy Group, Department of Pharmaceutical Biosciences, Uppsala University, Uppsala, Sweden
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang, China
| | | | - Maria Daglia
- International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang, China
- Department of Pharmacy, University of Napoli Federico II, Naples, Italy
| | - Peter J Little
- School of Pharmacy, University of Queensland, Pharmacy Australia Centre of Excellence, Woolloongabba, QLD, Australia
| | - Jianping Weng
- Department of Endocrinology, Institute of Endocrine and Metabolic Diseases, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Clinical Research Hospital of Chinese Academy of Sciences (Hefei), University of Science and Technology of China, Hefei, Anhui, China
| | - Suowen Xu
- Department of Endocrinology, Institute of Endocrine and Metabolic Diseases, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Clinical Research Hospital of Chinese Academy of Sciences (Hefei), University of Science and Technology of China, Hefei, Anhui, China
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