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Neuhauser C, Schwarzinger B, Schwarzinger C, Feichtinger M, Stadlbauer V, Arnaut V, Drotarova I, Blank-Landeshammer B, Weghuber J. Insulin-Mimetic Activity of Herbal Extracts Identified with Large-Scale Total Internal Reflection Fluorescence Microscopy. Nutrients 2024; 16:2182. [PMID: 39064624 PMCID: PMC11280383 DOI: 10.3390/nu16142182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2024] [Revised: 07/01/2024] [Accepted: 07/04/2024] [Indexed: 07/28/2024] Open
Abstract
Diabetes mellitus is a spreading global pandemic. Type 2 diabetes mellitus (T2DM) is the predominant form of diabetes, in which a reduction in blood glucose uptake is caused by impaired glucose transporter 4 (GLUT4) translocation to the plasma membrane in adipose and muscle cells. Antihyperglycemic drugs play a pivotal role in ameliorating diabetes symptoms but often are associated with side effects. Hence, novel antidiabetic compounds and nutraceutical candidates are urgently needed. Phytogenic therapy can support the prevention and amelioration of impaired glucose homeostasis. Using total internal reflection fluorescence microscopy (TIRFM), 772 plant extracts of an open-access plant extract library were screened for their GLUT4 translocation activation potential, resulting in 9% positive hits. Based on commercial interest and TIRFM assay-based GLUT4 translocation activation, some of these extracts were selected, and their blood glucose-reducing effects in ovo were investigated using a modified hen's egg test (Gluc-HET). To identify the active plant part, some of the available candidate plants were prepared in-house from blossoms, leaves, stems, or roots and tested. Acacia catechu (catechu), Pulmonaria officinalis (lungwort), Mentha spicata (spearmint), and Saponaria officinalis (common soapwort) revealed their potentials as antidiabetic nutraceuticals, with common soapwort containing GLUT4 translocation-activating saponarin.
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Affiliation(s)
- Cathrina Neuhauser
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (B.S.); (M.F.); (V.S.); (V.A.); (I.D.)
- FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria;
| | - Bettina Schwarzinger
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (B.S.); (M.F.); (V.S.); (V.A.); (I.D.)
- FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria;
| | - Clemens Schwarzinger
- Institute for Chemical Technology of Organic Materials, Johannes Kepler University, 4040 Linz, Austria;
| | - Michaela Feichtinger
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (B.S.); (M.F.); (V.S.); (V.A.); (I.D.)
| | - Verena Stadlbauer
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (B.S.); (M.F.); (V.S.); (V.A.); (I.D.)
- FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria;
| | - Verena Arnaut
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (B.S.); (M.F.); (V.S.); (V.A.); (I.D.)
| | - Ivana Drotarova
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (B.S.); (M.F.); (V.S.); (V.A.); (I.D.)
| | - Bernhard Blank-Landeshammer
- FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria;
| | - Julian Weghuber
- Center of Excellence Food Technology and Nutrition, University of Applied Sciences Upper Austria, Stelzhamerstraße 23, 4600 Wels, Austria; (C.N.); (B.S.); (M.F.); (V.S.); (V.A.); (I.D.)
- FFoQSI GmbH-Austrian Competence Centre for Feed and Food Quality, Safety and Innovation, Technopark 1D, 3430 Tulln, Austria;
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Lee EB, Lee K. Coptis rhizome extract influence on Streptococcus pneumoniae through autolysin activation. AMB Express 2024; 14:79. [PMID: 38965154 PMCID: PMC11224187 DOI: 10.1186/s13568-024-01736-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 06/25/2024] [Indexed: 07/06/2024] Open
Abstract
This study investigated the antibacterial properties of Coptis rhizome, a plant traditionally used for respiratory infections, against Streptoccus pneumonia (S. pneumoniae), for which there has been minimal empirical evidence of effectiveness. The study particularly examined autolysis, indirectly associated with antibacterial resistance, when using Coptis rhizome for bacterial infections. In our methodology, Coptis rhizome was processed with ethanol and distilled water to produce four different extracts: CRET30, CRET50, CRET70, and CRDW. The antibacterial activity of these extracts were tested through Minimum Inhibitory Concentration (MIC) assays, disk diffusion tests, and time-kill assays, targeting both standard (ATCC 49619) and resistant (ATCC 70067) strains. The study also evaluated the extracts' biofilm inhibition properties and monitored the expression of the lyt gene, integral to autolysis. The results prominently showed that the CRET70 extract demonstrated remarkable antibacterial strength. It achieved an MIC of 0.125 µg/mL against both tested S. pneumoniae strains. The disk diffusion assay recorded inhibition zones of 22.17 mm for ATCC 49619 and 17.20 mm for ATCC 70067. Impressively, CRET70 resulted in a 2-log decrease in bacterial numbers for both strains, showcasing its potent bactericidal capacity. The extract was also effective in inhibiting 77.40% of biofilm formation. Additionally, the significant overexpression of the lytA gene in the presence of CRET70 pointed to a potential mechanism of action for its antibacterial effects. The outcomes provided new perspectives on the use of Coptis rhizome in combating S. pneumoniae, especially significant in an era of escalating antibiotic resistance.
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Affiliation(s)
- Eon-Bee Lee
- Laboratory of Veterinary Pharmacokinetics and Pharmacodynamics, College of Veterinary Medicine, Kyungpook National University, Daegu, 41566, Republic of Korea
- Veterinary Drugs and Biologics Division, Animal and Plant Quarantine Agency, Gimcheon, 39660, Republic of Korea
| | - Kyubae Lee
- Department of Biomedical Materials, Konyang University, Daejeon, 35365, Republic of Korea.
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Adeeyo AO, Oyetade JA, Alabi MA, Adeeyo RO, Samie A, Makungo R. Tuning water chemistry for the recovery of greener products: pragmatic and sustainable approaches. RSC Adv 2023; 13:6808-6826. [PMID: 36865581 PMCID: PMC9972008 DOI: 10.1039/d2ra06596g] [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: 10/19/2022] [Accepted: 02/17/2023] [Indexed: 03/04/2023] Open
Abstract
The environmental impact and denaturing propensity of organic solvents in the extraction of plant bioactives pose great challenges in extraction systems. As a result, proactive consideration of procedures and evidence for tuning water properties for better recovery and positive influence on the green synthesis of products become pivotal. The conventional maceration approach takes a longer duration (1-72 h) for product recovery while percolation, distillation, and Soxhlet extractions take about 1 to 6 h. An intensified modern hydro-extraction process was identified for tuning water properties with an appreciable yield similar to organic solvents within 10-15 min. The percentage yield of tuned hydro-solvents achieved close to 90% recovery of active metabolites. The additional advantage of using tuned water over organic solvents is in the preservation of the bio-activities and forestalling the possibility of contamination of the bio-matrices during extractions with an organic solvent. This advantage is based on the fast extraction rate and selectivity of the tuned solvent when compared to the traditional approach. This review uniquely approaches the study of biometabolite recovery through insights from the chemistry of water under different extraction techniques for the very first time. Current challenges and prospects from the study are further presented.
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Affiliation(s)
- A. O. Adeeyo
- Ecology and Resource Management Unit, Faculty of Science, Engineering and Agriculture, University of VendaThohoyandou 0950South Africa,Aqua Plantae Research Group, University of VendaThohoyandou 0950South Africa
| | - J. A. Oyetade
- Material Science and Engineering, School of Materials, Water, Energy and Environmental Science, Nelson Mandela African Institution of Science and TechnologyArushaTanzania
| | - M. A. Alabi
- Department of Microbiology, School of Life Sciences, Federal University of TechnologyAkureNigeria
| | - R. O. Adeeyo
- Ecology and Resource Management Unit, Faculty of Science, Engineering and Agriculture, University of VendaThohoyandou 0950South Africa
| | - A. Samie
- Department of Microbiology, Faculty of Science, Engineering and Agriculture, University of VendaThohoyandou 0950South Africa
| | - R. Makungo
- Department of Earth Science, University of VendaThohoyandou 0950South Africa
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Bitwell C, Sen IS, Luke C, Kakoma MK. A review of Modern and Conventional Extraction Techniques and their Applications for Extracting Phytochemicals from Plants. SCIENTIFIC AFRICAN 2023. [DOI: 10.1016/j.sciaf.2023.e01585] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023] Open
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