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Sirirungruang S, Blay V, Scott YF, Pereira JH, Hammel M, Barnum CR, Adams PD, Shih PM. Structural and biochemical basis for regiospecificity of the flavonoid glycosyltransferase UGT95A1. J Biol Chem 2024; 300:107602. [PMID: 39059496 DOI: 10.1016/j.jbc.2024.107602] [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: 04/30/2024] [Revised: 07/02/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
Glycosylation is a predominant strategy plants use to fine-tune the properties of small molecule metabolites to affect their bioactivity, transport, and storage. It is also important in biotechnology and medicine as many glycosides are utilized in human health. Small molecule glycosylation is largely carried out by family 1 glycosyltransferases. Here, we report a structural and biochemical investigation of UGT95A1, a family 1 GT enzyme from Pilosella officinarum that exhibits a strong, unusual regiospecificity for the 3'-O position of flavonoid acceptor substrate luteolin. We obtained an apo crystal structure to help drive the analyses of a series of binding site mutants, revealing that while most residues are tolerant to mutations, key residues M145 and D464 are important for overall glycosylation activity. Interestingly, E347 is crucial for maintaining the strong preference for 3'-O glycosylation, while R462 can be mutated to increase regioselectivity. The structural determinants of regioselectivity were further confirmed in homologous enzymes. Our study also suggests that the enzyme contains large, highly dynamic, disordered regions. We showed that while most disordered regions of the protein have little to no implication in catalysis, the disordered regions conserved among investigated homologs are important to both the overall efficiency and regiospecificity of the enzyme. This report represents a comprehensive in-depth analysis of a family 1 GT enzyme with a unique substrate regiospecificity and may provide a basis for enzyme functional prediction and engineering.
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Affiliation(s)
- Sasilada Sirirungruang
- Department of Plant and Microbial Biology, University of California, Berkeley, California, USA; Feedstocks Division, Joint BioEnergy Institute, Emeryville, California, USA; Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA; Center for Biomolecular Structure, Function and Application, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Vincent Blay
- Biofuels and Bioproducts Division, Joint BioEnergy Institute, Emeryville, California, USA
| | - Yasmine F Scott
- Department of Molecular and Cell Biology, University of California, Berkeley, California, USA
| | - Jose H Pereira
- Technology Division, Joint BioEnergy Institute, Emeryville, California, USA; Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Michal Hammel
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Collin R Barnum
- Biochemistry, Molecular, Cellular and Developmental Biology Graduate Group, University of California, Davis, California, USA
| | - Paul D Adams
- Technology Division, Joint BioEnergy Institute, Emeryville, California, USA; Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Patrick M Shih
- Department of Plant and Microbial Biology, University of California, Berkeley, California, USA; Feedstocks Division, Joint BioEnergy Institute, Emeryville, California, USA; Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA; Innovative Genomics Institute, University of California, Berkeley, California, USA.
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Zhu M, Sun Y, Su Y, Guan W, Wang Y, Han J, Wang S, Yang B, Wang Q, Kuang H. Luteolin: A promising multifunctional natural flavonoid for human diseases. Phytother Res 2024; 38:3417-3443. [PMID: 38666435 DOI: 10.1002/ptr.8217] [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: 01/02/2024] [Revised: 04/06/2024] [Accepted: 04/14/2024] [Indexed: 07/12/2024]
Abstract
Natural products are closely associated with human health. Luteolin (LUT), a flavonoid polyphenolic compound, is widely found in fruits, vegetables, flowers, and herbs. It is noteworthy that LUT exhibits a variety of beneficial pharmacological properties and holds significant potential for clinical applications, particularly in antitumor, anti-convulsion, diabetes control, anti-inflammatory, neuroprotection, anti-oxidation, anti-cardiovascular, and other aspects. The potential mechanism of action has been partially elucidated, including the mediation of NF-κB, toll-like receptor, MAPK, Wnt/β-catenin, PI3K/Akt, AMPK/mTOR, and Nrf-2, among others. The review that aimed to comprehensively consolidate essential information on natural sources, pharmacological effects, therapeutic and preventive potential, as well as potential mechanisms of LUT. The objective is to establish a theoretical basis for the continued development and application of LUT.
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Affiliation(s)
- Mingtao Zhu
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Yanping Sun
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Yang Su
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Wei Guan
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Yu Wang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Jianwei Han
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Shuang Wang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Bingyou Yang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
| | - Qiuhong Wang
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Haixue Kuang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin, China
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Le TH, Nguyen THC, Le LS, Tran TVT, Nguyen TTH, Nguyen VT, Nguyen QM, Nguyen HLN, Ho XAV, Nguyen CC. An insight into the antioxidant activities and the exploration of record high quantities of quercetin and luteolin in the plant parts of Myxopyrum smilacifolium (wall.) Blume. Nat Prod Res 2024:1-8. [PMID: 38824679 DOI: 10.1080/14786419.2024.2359538] [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: 12/26/2023] [Accepted: 05/18/2024] [Indexed: 06/04/2024]
Abstract
This study attempts to reveal antioxidants in the plant parts of Myxopyrum smilacifolium (Wall.) Blume using antioxidant assays and LC-MS/MS analysis. Methanol is the most effective solvent for collecting antioxidants. The roots-derived methanol extract demonstrates the greatest antioxidant activity, corresponding to the extremely low IC50 values of 16.39 µg/mL and 19.80 µg/mL for DPPH and ABTS radicals, respectively. The high phenolic and flavonoid contents are the primary reason for outstanding total antioxidant capacity (TAC; i.e. 247.73 ± 1.62 mg GA/g or 163.93 ± 0.83 mg AS/g) of the root extract. LC-MS/MS quantification of five phenolic compounds reveals exceptionally high amounts of quercetin and luteolin in the root extract, ranging from 238.86 ± 5.74 to 310.99 ± 1.44 µg/g and from 201.49 ± 7.84 to 234.10 ± 2.54 µg/g, respectively, in the root-derived methanol extract. The achievement highlights M. smilacifolium as a promising source of natural antioxidants for large-scale medical applications.
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Affiliation(s)
- Trung Hieu Le
- Hue University of Sciences, Hue University, Thua Thien Hue, Vietnam
| | - Thi Hong Chuong Nguyen
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, Danang, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Danang, Vietnam
| | - Lam Son Le
- Hue University of Sciences, Hue University, Thua Thien Hue, Vietnam
| | - Thi Van Thi Tran
- Hue University of Sciences, Hue University, Thua Thien Hue, Vietnam
| | - Thi Thanh Huyen Nguyen
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, Danang, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Danang, Vietnam
| | | | - Quang Man Nguyen
- University of Medicine and Pharmacy, Hue University, Thua Thien Hue, Vietnam
| | - Hoang Luong Ngoc Nguyen
- Hue University of Sciences, Hue University, Thua Thien Hue, Vietnam
- Ho Chi Minh University of Industry and Trade, Ho Chi Minh, Vietnam
| | - Xuan Anh Vu Ho
- Hue University of Sciences, Hue University, Thua Thien Hue, Vietnam
| | - Chinh Chien Nguyen
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, Danang, Vietnam
- Faculty of Natural Sciences, Duy Tan University, Danang, Vietnam
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Atolani O, Usman MA, Adejumo JO, Ayeni AE, Ibukun OJ, Kola-Mustapha AT, Njinga NS, Quadri LA, Ajani EO, Amusa TO, Bakare-Odunola MT, Oladiji AT, Alqahtani A, Abbas M, Kambizi L. Isolation, characterization and anti-inflammatory activity of compounds from the Vernonia amygdalina. Heliyon 2024; 10:e29518. [PMID: 38665563 PMCID: PMC11043951 DOI: 10.1016/j.heliyon.2024.e29518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
The need to explore the abundance of natural products cannot be overemphasized particularly in the management of various disease conditions. In traditional medical practice, Vernonia amygdalina has been widely adopted in the management of various inflammatory disorders. The objective of this investigation was to isolate the bioactive principles from the stem-bark and root of V. amygdalina and assess the anti-inflammatory (in vitro) activity of both the crude extracts and the isolated compounds. Following extraction with the methanol, the extract was subjected to gravity column chromatography and the resultant fractions was further purified to obtained pure compounds. The structural elucidation of the compounds were based on data obtained from 1H to 13C nuclear magnetic resonance (NMR) spectroscopies as well as fourier transform infrared (FT-IR). Using diclofenac as a control drug, the albumin denaturation assay was used to determine the in vitro anti-inflammatory activity of the extracts and isolates. Three distinct compounds characterized are vernoamyoside D, luteolin-7-α-o-glucuronide, and vernotolaside, a new glycoside. When compared to diclofenac, which has an IC50 of 167.8 μg/mL, luteolin-7-α-o-glucuronide, vernoamyoside D, and vernotolaside all showed significant inhibitions with respective IC50 values 549.8, 379.5, and 201.7 μg/mL. Vernotolaside is reported for the first time from the root. The assertion that the plant is used in traditional medicine for the management of inflammatory disorder is somewhat validated by the confirmation of the existence of the compounds with the biochemical actions. Further validation of the isolated compounds would be required in animal studies.
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Affiliation(s)
- Olubunmi Atolani
- African Centre for Herbal Research, Ilorin (ACHRI), University of Ilorin, Nigeria
- Department of Chemistry, University of Ilorin, Ilorin, Nigeria
| | | | | | | | - Olamilekan Joseph Ibukun
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
| | - Adeola T. Kola-Mustapha
- African Centre for Herbal Research, Ilorin (ACHRI), University of Ilorin, Nigeria
- Department of Pharmaceutics and Industrial Pharmacy, University of Ilorin, Ilorin, Nigeria
| | - Ngaitad S. Njinga
- African Centre for Herbal Research, Ilorin (ACHRI), University of Ilorin, Nigeria
- Department of Pharmaceutical and Medicinal Chemistry, University of Ilorin, Ilorin, Nigeria
| | - Luqman A. Quadri
- African Centre for Herbal Research, Ilorin (ACHRI), University of Ilorin, Nigeria
- Department of Biochemistry, University of Ilorin, Ilorin, Nigeria
| | - Emmanuel O. Ajani
- African Centre for Herbal Research, Ilorin (ACHRI), University of Ilorin, Nigeria
- Phytomedicine Toxicology and Drug Development Laboratory, Department of Biochemistry, Kwara State University, Malete, Nigeria
| | - Tajudeen O. Amusa
- African Centre for Herbal Research, Ilorin (ACHRI), University of Ilorin, Nigeria
- Department of Forest Research Management, University of Ilorin, Ilorin, Nigeria
| | - Moji T. Bakare-Odunola
- African Centre for Herbal Research, Ilorin (ACHRI), University of Ilorin, Nigeria
- Department of Pharmaceutical and Medicinal Chemistry, University of Ilorin, Ilorin, Nigeria
| | - Adenike T. Oladiji
- African Centre for Herbal Research, Ilorin (ACHRI), University of Ilorin, Nigeria
- Department of Biochemistry, University of Ilorin, Ilorin, Nigeria
| | - Athba Alqahtani
- Research Centre, King Fahad Medical City. P.O. Box: 59046, Riyadh 11525, Saudi Arabia
| | - Mohamed Abbas
- Electrical Engineering Department, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia
| | - Learnmore Kambizi
- African Centre for Herbal Research, Ilorin (ACHRI), University of Ilorin, Nigeria
- Department of Hulticulture, Cape Peninsula University of Technology, South Africa
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5
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Omran S, Elnaggar YSR, Abdallah OY. Controlled release, chitosan-tethered luteolin phytocubosomes; Formulation optimization to in-vivo antiglaucoma and anti-inflammatory ocular evaluation. Int J Biol Macromol 2024; 254:127930. [PMID: 37944733 DOI: 10.1016/j.ijbiomac.2023.127930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/31/2023] [Accepted: 11/05/2023] [Indexed: 11/12/2023]
Abstract
A chitosan-coated luteolin-loaded phytocubosomal system was prepared to improve the pharmacodynamic performance of luteolin in the treatment of glaucoma and ocular inflammation after topical ocular administration. Luteolin, a potent anti-oxidant herbal drug with poor aqueous solubility, was complexed with phospholipid. The prepared phytocubosomes were coated with chitosan, producing homogenously distributed nanosized particles (258 ± 9.05 nm) with a positive charge (+49 ± 6.09 mV), improved EE% (96 %), and increased concentration of encapsulated drug to 288 μg/ml. Polarized light microscopy revealed a cubic phase. Chitosan-coated phytocubosomes showed a sustained drug release profile (38 % over 24 h) and improved anti-oxidant activity (IC50 of 32 μg/ml). Ex vivo transcorneal permeation was higher by 3.60 folds compared to luteolin suspension. Irritancy tests confirmed their safety in ocular tissues after single and multiple administrations. The pharmacodynamic studies on glaucomatous rabbit eyes demonstrated 6.46-, 3.88-, and 1.89-fold reductions in IOP of chitosan-coated phytocubosomes compared to luteolin suspension, cubosomes, and phytocubosomes, respectively. Pharmacodynamic anti-inflammatory studies revealed faster recovery capabilities of chitosan-coated phytocubosomes over other formulations. Thus, chitosan-coated phytocubosomes could be a promising ocular hybrid system for delivering herbal lipophilic drugs such as luteolin.
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Affiliation(s)
- Sarah Omran
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt
| | - Yosra S R Elnaggar
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt; Head of International Publication & Nanotechnology Consultation Center (INCC), Faculty of Pharmacy, Pharos University in Alexandria, Egypt.
| | - Ossama Y Abdallah
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt
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6
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Omran S, Elnaggar YSR, Abdallah OY. Carrageenan tethered ion sensitive smart nanogel containing oleophytocubosomes for improved ocular luteolin delivery. Int J Pharm 2023; 646:123482. [PMID: 37802260 DOI: 10.1016/j.ijpharm.2023.123482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 10/08/2023]
Abstract
Ophthalmic delivery of luteolin (LU) was studied after formulating a carrageenan-based novel ion-sensitive in situ gel (ISG) incorporating oleophytocubosomes for prolonged ocular residence time and improved ocular bioavailability of the poorly absorbed herbal drug luteolin. The prepared oleophytocubosomes and ISG were compared with LU suspension. Optimized oleophytocubosomes possessed small, homogenously distributed negatively charged particles with high entrapment efficiency. Polarized light microscope revealed a cubic phase. Optimized ISG matrix composed of 0.4% kappa carrageenan (KC), and 2% hydroxypropylmethylcellulose (HPMC) demonstrated rapid gelation, high resistance to dilution, increased viscosity after gelation, and strong mucoadhesive properties. oleophytocubosomes exerted improved drug release, while a more sustained release was observed for ISG oleophytocubosomes. The antioxidant activity of both formulations was significantly higher than that of LU suspension. Oleophytocubosome and ISG oleophytocubosome revealed significantly higher apparent permeability coefficients of 3.62 and 2.90 folds, respectively, compared to LU suspension. Irritation tests showed the safety of both formulations for single- and multiple-ocular administration. In-vivo studies demonstrated that the ISG system showed prolonged antiglaucoma effects and a faster anti-inflammatory effect, followed by oleophytocubosomes.
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Affiliation(s)
- Sarah Omran
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt
| | - Yosra S R Elnaggar
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt; Head of International-Publishing and Nanotechnology Consultation Center INCC, Pharos University in Alexandria, Egypt.
| | - Ossama Y Abdallah
- Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Egypt
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7
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Sidhic J, George S, Alfarhan A, Rajagopal R, Olatunji OJ, Narayanankutty A. Phytochemical Composition and Antioxidant and Anti-Inflammatory Activities of Humboldtia sanjappae Sasidh. & Sujanapal, an Endemic Medicinal Plant to the Western Ghats. Molecules 2023; 28:6875. [PMID: 37836717 PMCID: PMC10574196 DOI: 10.3390/molecules28196875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/11/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Ethnomedicinal plants are important sources of drug candidates, and many of these plants, especially in the Western Ghats, are underexplored. Humboldtia, a genus within the Fabaceae family, thrives in the biodiversity of the Western Ghats, Kerala, India, and holds significant ethnobotanical importance. However, many Humboldtia species remain understudied in terms of their biological efficacy, while some lack scientific validation for their traditional uses. However, Humboldtia sanjappae, an underexplored plant, was investigated for the phytochemical composition of the plant, and its antioxidant, enzyme-inhibitory, anti-inflammatory, and antibacterial activities were assessed. The LC-MS analysis indicated the presence of several bioactive substances, such as Naringenin, Luteolin, and Pomiferin. The results revealed that the ethanol extract of H. sanjappae exhibited significant in vitro DPPH scavenging activity (6.53 ± 1.49 µg/mL). Additionally, it demonstrated noteworthy FRAP (Ferric Reducing Antioxidant Power) activity (8.46 ± 1.38 µg/mL). Moreover, the ethanol extract of H. sanjappae exhibited notable efficacy in inhibiting the activities of α-amylase (47.60 ± 0.19µg/mL) and β-glucosidase (32.09 ± 0.54 µg/mL). The pre-treatment with the extract decreased the LPS-stimulated release of cytokines in the Raw 264.7 macrophages, demonstrating the anti-inflammatory potential. Further, the antibacterial properties were also evident in both Gram-positive and Gram-negative bacteria. The observed high zone of inhibition in the disc diffusion assay and MIC values were also promising. H. sanjappae displays significant anti-inflammatory, antioxidant, antidiabetic, and antibacterial properties, likely attributable to its rich composition of various biological compounds such as Naringenin, Luteolin, Epicatechin, Maritemin, and Pomiferin. Serving as a promising reservoir of these beneficial molecules, the potential of H. sanjappae as a valuable source for bioactive ingredients within the realms of nutraceutical and pharmaceutical industries is underscored, showcasing its potential for diverse applications.
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Affiliation(s)
- Jameema Sidhic
- Phytochemistry and Pharmacology Division, PG & Research Department of Botany, St. Joseph’s College (Autonomous), Calicut 673008, India
| | - Satheesh George
- Phytochemistry and Pharmacology Division, PG & Research Department of Botany, St. Joseph’s College (Autonomous), Calicut 673008, India
| | - Ahmed Alfarhan
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (A.A.); (R.R.)
| | - Rajakrishnan Rajagopal
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (A.A.); (R.R.)
| | | | - Arunaksharan Narayanankutty
- Division of Cell and Molecular Biology, PG & Research Department of Zoology, St. Joseph’s College (Autonomous), Calicut 673008, India
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Abdullah Al Awadh A. Biomedical applications of selective metal complexes of indole, benzimidazole, benzothiazole and benzoxazole: A review (From 2015 to 2022). Saudi Pharm J 2023; 31:101698. [PMID: 37533494 PMCID: PMC10393588 DOI: 10.1016/j.jsps.2023.101698] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 07/04/2023] [Indexed: 08/04/2023] Open
Abstract
Indole, benzoxazole benzothiazole and benzimidazole are excellent classes of organic heterocyclic compounds. These compounds show significant application in pharmacy, industries, dyes, medicine, polymers and food packages. These compounds also form metal complexes with copper, zinc, cadmium, nickel, cobalt, platinum, gold, palladium chromium, silver, iron, and other metals that have shown to be significant applications. Recently, researchers have attracted enormous attention toward heterocyclic compounds such as indole, benzimidazole, benzothiazole, benzoxazole, and their complexes due to their excellent medicinal applications such as anti-ulcerogenic, anti-cancer, antihypertensive, antifungal, anti-inflammatory, antitubercular, antiparasitic, anti-obesity, antimalarial, antiglycation, antiviral potency, antineuropathic, analgesic antioxidant, antihistaminic, and antibacterial potentials. In this article, we summarize the medicinal applications of these compounds as well as their metal complexes. We hope this article will help researchers in designing and synthesizing novel and potent compounds with significant applications in various fields.
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Lin W, Hu X, Tang Z, Wang Q, Qin Y, Shen N, Xiao Y, Yuan M, Chen H, Bu T, Li Q, Huang L. Preparation, structural analysis and physicochemical properties of the Cordyceps cicadae exopolysaccharide iron complex. Int J Biol Macromol 2023; 240:124377. [PMID: 37044322 DOI: 10.1016/j.ijbiomac.2023.124377] [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: 10/08/2022] [Revised: 02/17/2023] [Accepted: 04/04/2023] [Indexed: 04/14/2023]
Abstract
In this study, EPS-Fe(III) complexes were synthesized, and their structural characteristics, thermal stability, antioxidant activity and digestive properties were evaluated. The content of iron in the EPS-Fe(III) complex was 6.34 ± 1.43 %. The absorbance bands of EPS and EPS-Fe(III) complexes were easily changed, indicating that iron ions can interact with the hydroxyl or carboxyl groups of EPS. Energy spectrometric analysis showed that a strong iron signal was observed in the EPS-Fe(III) complex. The IC50 values of the EPS-Fe(III) complex for DPPH, hydroxyl radical and ABTS were 1.52 mg/mL, 2.63 mg/mL and 1.20 mg/mL, respectively. Under oxidative stress, EPS-Fe(III) can prolong the lifespan of nematodes through the DAF-16 and SKN-1 pathways. Under the condition of gastric juice and intestinal juice, the iron content released from artificial intestinal juice reached 66 %. In addition, the negative effect of trypsin or polyphenols on the solubility of iron in EPS-Fe(III) digestive solution was lower than that in ferric chloride digestive solution. In conclusion, the EPS-Fe(III) complex can be used as a new type of iron supplement, which has good antioxidant activity, high stability and good water solubility.
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Affiliation(s)
- Wenjie Lin
- College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China
| | - Xiangting Hu
- College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China
| | - Zizhong Tang
- College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China.
| | - Qing Wang
- College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China
| | - Yihan Qin
- College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China
| | - Nayu Shen
- College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China
| | - Yirong Xiao
- College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China; Sichuan Agricultural University Hospital, Ya'an 625014, China
| | - Ming Yuan
- College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China
| | - Hui Chen
- College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China
| | - Tongliang Bu
- College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China
| | - Qingfeng Li
- College of Life Sciences, Sichuan Agricultural University, Ya'an 625014, China
| | - Lin Huang
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, China
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Prestianni L, Espinal ER, Hathcock SF, Vollmuth N, Wang P, Holler RA, Liu S, Kim BJ, Bao Y. Synthesis and Characterization of Quercetin-Iron Complex Nanoparticles for Overcoming Drug Resistance. Pharmaceutics 2023; 15:pharmaceutics15041041. [PMID: 37111527 PMCID: PMC10144594 DOI: 10.3390/pharmaceutics15041041] [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: 01/19/2023] [Revised: 02/16/2023] [Accepted: 03/17/2023] [Indexed: 04/29/2023] Open
Abstract
Quercetin, one of the major natural flavonoids, has demonstrated great pharmacological potential as an antioxidant and in overcoming drug resistance. However, its low aqueous solubility and poor stability limit its potential applications. Previous studies suggest that the formation of quercetin-metal complexes could increase quercetin stability and biological activity. In this paper, we systematically investigated the formation of quercetin-iron complex nanoparticles by varying the ligand-to-metal ratios with the goal of increasing the aqueous solubility and stability of quercetin. It was found that quercetin-iron complex nanoparticles could be reproducibly synthesized with several ligand-to-iron ratios at room temperature. The UV-Vis spectra of the nanoparticles indicated that nanoparticle formation greatly increased the stability and solubility of quercetin. Compared to free quercetin, the quercetin-iron complex nanoparticles exhibited enhanced antioxidant activities and elongated effects. Our preliminary cellular evaluation suggests that these nanoparticles had minimal cytotoxicity and could effectively block the efflux pump of cells, indicating their potential for cancer treatment.
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Affiliation(s)
- Lucas Prestianni
- Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Eric R Espinal
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Sarah F Hathcock
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Nadine Vollmuth
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Pixiang Wang
- Department of Chemistry and Physics, Center for Materials and Manufacturing Sciences, Troy University, Troy, AL 36082, USA
| | - Robert A Holler
- Alabama Analytical Research Center, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Shaoyang Liu
- Department of Chemistry and Physics, Center for Materials and Manufacturing Sciences, Troy University, Troy, AL 36082, USA
| | - Brandon J Kim
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
- Department of Microbiology, Heersink School of Medicine, The University of Alabama at Birmingham, Birmingham, AL 35487, USA
- Center for Convergent Biosciences and Medicine, The University of Alabama, Tuscaloosa, AL 35487, USA
- Alabama Life Research Institute, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Yuping Bao
- Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
- Center for Convergent Biosciences and Medicine, The University of Alabama, Tuscaloosa, AL 35487, USA
- Alabama Life Research Institute, The University of Alabama, Tuscaloosa, AL 35487, USA
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11
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Xi M, Hou Y, Cai Y, Shen H, Ao J, Li M, Wang J, Luo A. Antioxidant and antimicrobial characteristics of ethyl acetate polar fractions from walnut green husk. J Food Sci 2023; 88:1060-1074. [PMID: 36695779 DOI: 10.1111/1750-3841.16473] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 12/17/2022] [Accepted: 01/04/2023] [Indexed: 01/26/2023]
Abstract
Walnut green husk (WGH) is rich in natural compounds and is valued as a potential source of antioxidant and antimicrobial properties. In this study, the antioxidant and antimicrobial activities of petroleum ether polar fraction, dichloromethane polar fraction, ethyl acetate polar fraction (EAPF), and n-butanol polar fraction from WGH were analyzed. The results showed that EAPF exhibited the highest total flavonoid content (65.74 ± 1.01 mg rutin equivalents [RE]/g dry weight [DW]) and total phenol content (48.73 ± 1.09 mg gallic acid equivalent [GAE]/g DW), with the highest 2,2-diphenyl-1-picrylhydrazyl, hydroxyl radical (•OH), and 2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonate scavenging activity compared with other fractions. EAPF also showed good antibacterial activity against Escherichia coli and Bacillus cereus vegetative cells, with a diameter of inhibition zones of 33.5 and 37.6 mm, respectively, a minimum inhibitory concentration of 31.25 mg/ml and a minimum bactericidal concentration of 62.5 mg/ml, which inhibited the growth of both bacteria. Analysis of the antibacterial mechanism demonstrated that EAPF damaged the integrity of the cell membrane, increased the membrane permeability, and triggered the leakage of intracellular material. In addition, ultrahigh performance liquid chromatography-tandem with mass spectrometry analysis revealed that 8 polyphenols and 14 flavonoids were mainly present in EAPF, such as chlorogenic acid (C16 H18 O9 ), gallic acid (C7 H6 O5 ), vanillic acid (C8 H8 O4 ), ferulic acid (C10 H10 O4 ), epicatechin (C15 H14 O6 ), catechin (C15 H14 O6 ), hesperetin (C16 H14 O6 ), naringenin (C15 H12 O5 ), hyperin (C21 H20 O12 ), luteolin (C15 H10 O6 ), and so on. Therefore, WGH had the potential to be developed as a natural antioxidant and antibacterial material. PRACTICAL APPLICATION: Our work indicates that WGH contains abundant flavonoids and polyphenols compounds. Therefore, the plant byproducts like WGH may have a promising application as a source of antimicrobial and antioxidant additives.
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Affiliation(s)
- Meihua Xi
- College of Food Science and Engineering, Northwest A&F University, Xianyang, China
| | - Yujie Hou
- College of Food Science and Engineering, Northwest A&F University, Xianyang, China
| | - Yingying Cai
- College of Food Science and Engineering, Northwest A&F University, Xianyang, China
| | - Heyu Shen
- College of Food Science and Engineering, Northwest A&F University, Xianyang, China
| | - Jingfang Ao
- College of Food Science and Engineering, Northwest A&F University, Xianyang, China
| | - Mei Li
- College of Food Science and Engineering, Northwest A&F University, Xianyang, China
| | - Jun Wang
- College of Food Science and Engineering, Northwest A&F University, Xianyang, China
| | - Anwei Luo
- College of Food Science and Engineering, Northwest A&F University, Xianyang, China
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12
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Benetis NP, Paloncýová M, Knippenberg S. Multiscale Modeling Unravels the Influence of Biomembranes on the Photochemical Properties of Embedded Anti-Oxidative Polyphenolic and Phenanthroline Chelating Dyes. J Phys Chem B 2023; 127:212-227. [PMID: 36563093 DOI: 10.1021/acs.jpcb.2c07072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The embedding of caffeate methyl ester, the flavonoids luteolin and quercetin, and the o-phenanthroline and neocuproine in a liquid disordered lipid bilayer has been studied through extensive atomistic calculations. The location and the orientation of these bio-active antioxidants are explained and analyzed. While the two phenanthrolines strongly associate with the lipid tail region, the other three compounds are rather found among the head groups. The simulations showcase conformational changes of the flavonoids. Through the use of a hybrid quantum mechanics-molecular mechanics scheme and supported by a profound benchmarking of the electronic excited-state method for these compounds, the influence of the anisotropic environment on the compounds' optical properties is analyzed. Influences of surrounding water molecules and of the polar parts of the lipids on the transition dipole moments and excited-state dipole moments are weighted with respect to a change in conformation. The current study highlights the importance of the mapping of molecular interactions in model membranes and pinpoints properties, which can be biomedically used to discriminate and detect different lipid environments.
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Affiliation(s)
| | - Markéta Paloncýová
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technologies and Research Institute, Palacký University Olomouc, Křížkovského 8, Olomouc779 00, Czech Republic
| | - Stefan Knippenberg
- Hasselt University, Theory Lab, Agoralaan Building D, 3590Diepenbeek, Belgium.,Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), Université Libre de Bruxelles, 50 Avenue F. Roosevelt, C.P. 160/09, B-1050Brussels, Belgium
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13
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Prasher P, Sharma M, Singh SK, Gulati M, Chellappan DK, Zacconi F, De Rubis G, Gupta G, Sharifi-Rad J, Cho WC, Dua K. Luteolin: a flavonoid with a multifaceted anticancer potential. Cancer Cell Int 2022; 22:386. [PMID: 36482329 PMCID: PMC9730645 DOI: 10.1186/s12935-022-02808-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 11/24/2022] [Indexed: 12/13/2022] Open
Abstract
Therapeutic effect of phytochemicals has been emphasized in the traditional medicine owing to the presence of bioactive molecules, such as polyphenols. Luteolin is a flavone belonging to the flavonoid class of polyphenolic phytochemicals with healing effect on hypertension, inflammatory disorders, and cancer due to its action as pro-oxidants and antioxidants. The anticancer profile of luteolin is of interest due to the toxic effect of contemporary chemotherapy paradigm, leading to the pressing need for the development and identification of physiologically benevolent anticancer agents and molecules. Luteolin exerts anticancer activity by downregulation of key regulatory pathways associated with oncogenesis, in addition to the induction of oxidative stress, cell cycle arrest, upregulation of apoptotic genes, and inhibition of cell proliferation and angiogenesis in cancer cells. In this review, we discuss about the anticancer profile of luteolin.
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Affiliation(s)
- Parteek Prasher
- grid.444415.40000 0004 1759 0860Department of Chemistry, University of Petroleum & Energy Studies, Dehradun, 248007 India
| | - Mousmee Sharma
- grid.449906.60000 0004 4659 5193Department of Chemistry, Uttaranchal University, Dehradun, 248007 India
| | - Sachin Kumar Singh
- grid.449005.cSchool of Pharmacy and Pharmaceutical Science, Lovely Professional University, Phagwara, India ,grid.117476.20000 0004 1936 7611Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, NSW 2007 Australia
| | - Monica Gulati
- grid.449005.cSchool of Pharmacy and Pharmaceutical Science, Lovely Professional University, Phagwara, India ,grid.117476.20000 0004 1936 7611Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, NSW 2007 Australia
| | - Dinesh Kumar Chellappan
- grid.411729.80000 0000 8946 5787Department of Life Sciences, School of Pharmacy, International Medical University, Bukit Jalil, 57000 Kuala Lumpur, Malaysia
| | - Flavia Zacconi
- grid.7870.80000 0001 2157 0406Departamento de Quimica Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Av. Vicuna Mackenna 4860, Macul, 7820436 Santiago, Chile ,grid.7870.80000 0001 2157 0406Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, 7820436 Santiago, Chile
| | - Gabriele De Rubis
- grid.117476.20000 0004 1936 7611Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, NSW 2007 Australia ,grid.117476.20000 0004 1936 7611Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, Australia
| | - Gaurav Gupta
- grid.448952.60000 0004 1767 7579School of Pharmacy, Suresh Gyan Vihar University, Jaipur, Rajasthan India ,grid.412431.10000 0004 0444 045XDepartment of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India ,grid.449906.60000 0004 4659 5193Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, India
| | - Javad Sharifi-Rad
- grid.442126.70000 0001 1945 2902Facultad de Medicina, Universidad del Azuay, Cuenca, Ecuador
| | - William C. Cho
- grid.415499.40000 0004 1771 451XDepartment of Clinical Oncology, Queen Elizabeth Hospital, Kowloon, Hong Kong China
| | - Kamal Dua
- grid.117476.20000 0004 1936 7611Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Sydney, NSW 2007 Australia ,grid.117476.20000 0004 1936 7611Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, Australia
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EGF-conjugated bio-safe luteolin gold nanoparticles induce cellular toxicity and cell death mediated by site-specific rapid uptake in human triple negative breast cancer cells. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.104148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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15
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Liu K, Zeng N, Pan J, Gong D, Zhang G. Synthesis, characterization, toxicity evaluation and inhibitory effect of hesperitin-copper (Ⅱ) complex on xanthine oxidase. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Self-Emulsifying Phospholipid Preconcentrates for the Enhanced Photoprotection of Luteolin. Pharmaceutics 2022; 14:pharmaceutics14091896. [PMID: 36145644 PMCID: PMC9506472 DOI: 10.3390/pharmaceutics14091896] [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: 08/04/2022] [Revised: 08/25/2022] [Accepted: 09/05/2022] [Indexed: 11/18/2022] Open
Abstract
Exposure to ultraviolet B (UVB) leads to the overproduction of reactive oxygen species (ROS), causing higher risks of skin disorders. Luteolin (Lut) is a naturally occurring antioxidant that can absorb a broad range of ultraviolet light, but its water solubility and skin permeability are limited and insufficient. The aim of the current study was to develop a Lut-loaded self-emulsifying phospholipid preconcentrate (LSEPP) for enhancing the solubility, permeability, and photoprotective activity of Lut. The designed formulations were firstly examined for their droplet size, zeta potential, dispersity, and in vitro corneum permeability after dispensing the preconcentrate to form an emulsion; the optimized formulation was further characterized for its emulsified morphology, compatibility with excipients, stability in the preconcentrate form, and photoprotective activity by the HaCaT cell model under the emulsified status. The optimized LSEPP formulation attained a smaller droplet size (140.6 ± 24.2 nm) with the addition of 1,8-cineole and increased the permeability of Lut by 7-fold. As evidenced in the cell model studies, the optimized LSEPP formulation can efficiently deliver Lut into HaCaT cells after emulsification and result in a 115% better cell viability as well as a 203% stronger ROS scavenging capability, compared with those of unformulated Lut after UVB irradiation. To sum up, we have successfully developed an LSEPP formulation, which is a safe and promising topical delivery system for enhancing the photoprotective effects of Lut.
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Ivyna de Araújo Rêgo R, Guedes Silvestre GF, Ferreira de Melo D, Albino SL, Pimentel MM, Silva Costa Cruz SB, Silva Wurzba SD, Rodrigues WF, Goulart de Lima Damasceno BP, Cançado Castellano LR. Flavonoids-Rich Plant Extracts Against Helicobacter pylori Infection as Prevention to Gastric Cancer. Front Pharmacol 2022; 13:951125. [PMID: 36120379 PMCID: PMC9470917 DOI: 10.3389/fphar.2022.951125] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/20/2022] [Indexed: 11/15/2022] Open
Abstract
Gastric cancer is the fifth most common and fourth type to cause the highest mortality rates worldwide. The leading cause is related to Helicobacter pylori (H. pylori) infection. Unfortunately, current treatments have low success rates, highlighting the need for alternative treatments against carcinogenic agents, specifically H. pylori. Noteworthy, natural origin products contain pharmacologically active metabolites such as flavonoids, with potential antimicrobial applications. Objective: This article overviews flavonoid-rich extracts’ biological and pharmacological activities. It focuses on using these substances against Helicobacter pylori infection to prevent gastric cancer. For this, PubMed and Science Direct databases were searched for studies that reported the activity of flavonoids against H. pylori, published within a 10-year time frame (2010 to August 2020). It resulted in 1,773 publications, of which 44 were selected according to the search criteria. The plant family primarily found in publications was Fabaceae (9.61%). Among the flavonoids identified after extraction, the most prevalent were quercetin (19.61%), catechin (13.72), epicatechin (11.76), and rutin (11.76). The potential mechanisms associated with anti-H. pylori activity to the extracts were: inhibition of urease, damage to genetic material, inhibition of protein synthesis, and adhesion of the microorganism to host cells. Conclusion: Plant extracts rich in flavonoids with anti-H. pylori potential proved to be a promising alternative therapy source, reinforcing the relevance of studies with natural products.
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Affiliation(s)
- Renaly Ivyna de Araújo Rêgo
- Human Immunology Research and Education Group-GEPIH, Federal University of Paraiba, João Pessoa, Brazil
- Postgraduate Program of Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Brazil
- Postgraduate Program of Science and Technology in Health, State University of Paraíba, Campina Grande, Brazil
| | | | - Demis Ferreira de Melo
- Postgraduate Program of Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Brazil
| | - Sonaly Lima Albino
- Postgraduate Program of Therapeutic Innovation, Federal University of Pernambuco, Recife, Brazil
| | - Marcela Monteiro Pimentel
- Postgraduate Program of Science and Technology in Health, State University of Paraíba, Campina Grande, Brazil
| | - Sara Brito Silva Costa Cruz
- Postgraduate Program in Dentistry, Federal University of Paraíba, João Pessoa, Brazil
- Department of Otolaryngology and Head and Neck Surgery, McGill University, Montreal, QC, Canada
- Segal Cancer Centre and Lady Davis Institute for Medical Research, Departments of Medicine and Oncology, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Sabrina Daniela Silva Wurzba
- Department of Otolaryngology and Head and Neck Surgery, McGill University, Montreal, QC, Canada
- Segal Cancer Centre and Lady Davis Institute for Medical Research, Departments of Medicine and Oncology, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | | | | | - Lúcio Roberto Cançado Castellano
- Human Immunology Research and Education Group-GEPIH, Federal University of Paraiba, João Pessoa, Brazil
- Postgraduate Program of Pharmaceutical Sciences, State University of Paraíba, Campina Grande, Brazil
- Postgraduate Program in Dentistry, Federal University of Paraíba, João Pessoa, Brazil
- Department of Otolaryngology and Head and Neck Surgery, McGill University, Montreal, QC, Canada
- Segal Cancer Centre and Lady Davis Institute for Medical Research, Departments of Medicine and Oncology, Faculty of Medicine, McGill University, Montreal, QC, Canada
- *Correspondence: Lúcio Roberto Cançado Castellano,
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18
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De Marco I. Production of carrier/antioxidant particles by Supercritical Assisted Atomization as an adjuvant treatment of the CoVID-19 pathology. J Supercrit Fluids 2022; 186:105604. [PMID: 35431435 PMCID: PMC8994258 DOI: 10.1016/j.supflu.2022.105604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/27/2022] [Accepted: 04/06/2022] [Indexed: 12/13/2022]
Affiliation(s)
- Iolanda De Marco
- Department of Industrial Engineering, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
- Research Centre for Biomaterials BIONAM, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy
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19
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Das R, Bej S, Murmu NC, Banerjee P. Selective recognition of ammonia and aliphatic amines by C-N fused phenazine derivative: A hydrogel based smartphone assisted ‘opto-electronic nose’ for food spoilage evaluation with potent anti-counterfeiting activity and a potential prostate cancer biomarker sensor. Anal Chim Acta 2022; 1202:339597. [DOI: 10.1016/j.aca.2022.339597] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 02/04/2022] [Accepted: 02/08/2022] [Indexed: 12/21/2022]
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20
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Jafar M, Khalid MS, Alghamdi H, Amir M, Al Makki SA, Alotaibi OS, Al Rmais AA, Imam SS, Alshehri S, Gilani SJ. Formulation of Apigenin-Cyclodextrin-Chitosan Ternary Complex: Physicochemical Characterization, In Vitro and In Vivo Studies. AAPS PharmSciTech 2022; 23:71. [PMID: 35146576 DOI: 10.1208/s12249-022-02218-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 01/17/2022] [Indexed: 01/01/2023] Open
Abstract
The current investigation was performed with an aim to improve the aqueous solubility, dissolution rate, and thus the biological activity of apigenin (APG) using the solubilizers hydroxypropyl beta-cyclodextrin (HPβCD) and chitosan (CTSN). A binary and ternary inclusion complexes of APG with HPβCD and CTSN were prepared by physical mixing, fusion, and solvent evaporation methods. The liquid state characterization of the APG, the solubilizers, and the physical and chemical interactions between them was done through phase solubility approach. The solid-state characterization was performed by proton nuclear magnetic resonance (1H-NMR), differential scanning calorimetry (DSC), and X-ray diffractometry (XRD). The in vitro dissolution test and antioxidant activity and in vivo anti-inflammatory activity of the ternary inclusion complex in albino rats were performed to assess the performance of the APG. Phase solubility study results revealed a remarkable increase in apparent stability constant (Kc) and complexation efficiency (CE) of HPβCD in presence of CTSN in ternary complex with above 8 folds more increment in solubility of APG than its binary complex. The in vitro dissolution rate, antioxidant activity, and the anti-inflammatory effect of the APG ternary inclusion complex were found to be significantly higher than that of pure APG. Solid state characterization confirmed the formation of a ternary inclusion complex. 1H-NMR study gave more insight at molecular level into how different groups of APG were responsible for complex formation with the HPβCD and how CTSN was significantly influencing on the APG-HPβCD complex formed. Nevertheless, pharmacokinetic and histopathological studies of our APG-HPβCD-CTSN ternary complex would yield much rewarding results.
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21
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Jafar M, Salahuddin M, Khan MSA, Alshehry Y, Alrwaili NR, Alzahrani YA, Imam SS, Alshehri S. Preparation and In Vitro-In Vivo Evaluation of Luteolin Loaded Gastroretentive Microsponge for the Eradication of Helicobacter pylori Infections. Pharmaceutics 2021; 13:2094. [PMID: 34959375 PMCID: PMC8705744 DOI: 10.3390/pharmaceutics13122094] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 11/26/2021] [Accepted: 11/30/2021] [Indexed: 11/17/2022] Open
Abstract
The current study aimed to develop a luteolin gastric floating microsponge for targeting Helicobacter pylori. The microsponge formulations were prepared by a quasi-emulsion method, and then evaluated for various physicochemical variables. The best microsponge was further assessed for drug-polymer interactions, surface morphology, in vivo floating, and in vitro anti H. pylori activity. The formulation which exhibited comparatively good production yield (64.45% ± 0.83), high entrapment efficiency (67.33% ± 3.79), prolonged in vitro floating time (>8 h), and sustained in-vitro drug release was selected as the best microsponge. The SEM study revealed that the best microsponge was spherical in shape and has a porous surface with interconnecting channels. DSC and XRD studies demonstrated the dispersion of luteolin in the polymeric matrix of the microsponge. Ultrasonography confirmed that the best microsponge could in the rat stomach for 4 h. The in vitro MIC results indicate that the anti H. pylori activity of the best microsponge was almost doubled and more sustained compared to pure luteolin. To conclude, it can be said that the developed luteolin gastric floating microsponge could be a better option to effectively eradicate H. pylori infections and the histopathological and pharmacodynamic assessments of our best microsponge can be expected to provide a rewarding outcome.
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Affiliation(s)
- Mohammed Jafar
- Department of Pharmaceutics, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 34212, Saudi Arabia; (Y.A.); (N.R.A.); (Y.A.A.)
| | - Mohammed Salahuddin
- Department of Clinical Pharmacy Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 34212, Saudi Arabia;
| | - Mohd Sajjad Ahmad Khan
- Department of Basic Sciences, Deanship of Preparatory Year and Supporting Studies, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 34212, Saudi Arabia;
| | - Yasir Alshehry
- Department of Pharmaceutics, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 34212, Saudi Arabia; (Y.A.); (N.R.A.); (Y.A.A.)
| | - Nazar Radwan Alrwaili
- Department of Pharmaceutics, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 34212, Saudi Arabia; (Y.A.); (N.R.A.); (Y.A.A.)
| | - Yazeed Ali Alzahrani
- Department of Pharmaceutics, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 34212, Saudi Arabia; (Y.A.); (N.R.A.); (Y.A.A.)
| | - Syed Sarim Imam
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (S.S.I.); (S.A.)
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (S.S.I.); (S.A.)
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22
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The Synergistic Beneficial Effect of Thyme Honey and Olive Oil against Diabetes and Its Complications Induced by Alloxan in Wistar Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:9949056. [PMID: 34594393 PMCID: PMC8478563 DOI: 10.1155/2021/9949056] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 08/08/2021] [Accepted: 09/08/2021] [Indexed: 12/25/2022]
Abstract
Diabetes is a metabolic disorder characterized by a chronic increase in blood glucose. Owing to the limitations observed with antidiabetics in modern medicine, medicinal plants and bee products are known as good matrices for the search for new antidiabetic molecules. The present study focused on the evaluation of the hypoglycemic and the protective properties of two natural products widely used in complementary and alternative medicine (thyme honey and olive oil). To achieve this, the study was carried out on Wistar rats rendered diabetic by the injection of a single dose of alloxan monohydrate (65 mg/kg body weight (BW)). First, the physicochemical characterization and the phytochemical analysis of thyme honey and olive oil were carried out, and then in vivo study was conducted on 42 Wistar rats divided into seven groups: three groups were normal, one group was untreated diabetic, and three groups were diabetic rats treated with thyme honey (2 g/kg BW) or olive oil (10 mL/kg BW) or their combination ((1 g/kg BW of thyme honey) and (5 mL/kg BW of olive oil)). During the experiment, the glycemia was measured regularly every 10 days. After 30 days of treatment, the rats were sacrificed. The serum and urine were analyzed to determine hepatic enzymes levels (AST, ALT, ALP, and LDH), lipidic profile (total cholesterol, triglycerides, high-density lipoprotein, low-density lipoprotein), and kidney parameters (urea, uric acid, creatinine, total protein, sodium, potassium, and chloride). The liver, pancreas, and kidneys were analyzed to evaluate their histological changes and to determine their enzymatic antioxidant content (catalase, GSH, and GPx) and the levels of MDA. The results obtained showed that thyme honey or olive oil, and especially their combination, improved significantly the blood glucose levels and they protect against metabolic changes and the complications induced by diabetes.
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Baruah K, Haque M, Langbang L, Das S, Aguan K, Singha Roy A. Ocimum sanctum mediated green synthesis of silver nanoparticles: A biophysical study towards lysozyme binding and anti-bacterial activity. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116422] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Zhu P, Chen L, Zhao Y, Gao C, Yang J, Liao X, Liu D, Yang B. A novel host-guest complex based on biotin functionalized polyamine-β-cyclodextrin for tumor targeted delivery of luteolin. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130339] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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25
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Kalinowska M, Gołębiewska E, Mazur L, Lewandowska H, Pruszyński M, Świderski G, Wyrwas M, Pawluczuk N, Lewandowski W. Crystal Structure, Spectroscopic Characterization, Antioxidant and Cytotoxic Activity of New Mg(II) and Mn(II)/Na(I) Complexes of Isoferulic Acid. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3236. [PMID: 34208366 PMCID: PMC8231219 DOI: 10.3390/ma14123236] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/29/2021] [Accepted: 06/07/2021] [Indexed: 12/17/2022]
Abstract
The Mg(II) and heterometallic Mn(II)/Na(I) complexes of isoferulic acid (3-hydroxy-4-methoxycinnamic acid, IFA) were synthesized and characterized by infrared spectroscopy FT-IR, FT-Raman, electronic absorption spectroscopy UV/VIS, and single-crystal X-ray diffraction. The reaction of MgCl2 with isoferulic acid in the aqueous solutions of NaOH resulted in synthesis of the complex salt of the general formula of [Mg(H2O)6]⋅(C10H9O4)2⋅6H2O. The crystal structure of this compound consists of discrete octahedral [Mg(H2O)6]2+ cations, isoferulic acid anions and solvent water molecules. The hydrated metal cations are arranged among the organic layers. The multiple hydrogen-bonding interactions established between the coordinated and lattice water molecules and the functional groups of the ligand stabilize the 3D architecture of the crystal. The use of MnCl2 instead of MgCl2 led to the formation of the Mn(II)/Na(I) complex of the general formula [Mn3Na2(C10H7O4)8(H2O)8]. The compound is a 3D coordination polymer composed of centrosymmetric pentanuclear subunits. The antioxidant activity of these compounds was evaluated by assays based on different antioxidant mechanisms of action, i.e., with •OH, DPPH• and ABTS•+ radicals as well as CUPRAC (cupric ions reducing power) and lipid peroxidation inhibition assays. The pro-oxidant property of compounds was measured as the rate of oxidation of Trolox. The Mg(II) and Mn(II)/Na(I) complexes with isoferulic acid showed higher antioxidant activity than ligand alone in DPPH (IFA, IC50 = 365.27 μM, Mg(II) IFA IC50 = 153.50 μM, Mn(II)/Na(I) IFA IC50 = 149.00 μM) and CUPRAC assays (IFA 40.92 μM of Trolox, Mg(II) IFA 87.93 μM and Mn(II)/Na(I) IFA 105.85 μM of Trolox; for compounds' concentration 10 μM). Mg(II) IFA is a better scavenger of •OH than IFA and Mn(II)/Na(I) IFA complex. There was no distinct difference in ABTS•+ and lipid peroxidation assays between isoferulic acid and its Mg(II) complex, while Mn(II)/Na(I) complex showed lower activity than these compounds. The tested complexes displayed only slight antiproliferative activity tested in HaCaT human immortalized keratinocyte cell line within the solubility range. The Mn(II)/Na(I) IFA (16 μM in medium) caused an 87% (±5%) decrease in cell viability, the Mg salt caused a comparable, i.e., 87% (±4%) viability decrease in a concentration of 45 μM, while IFA caused this level of cell activity attenuation (87% ± 5%) at the concentration of 1582 μM (significant at α = 0.05).
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Affiliation(s)
- Monika Kalinowska
- Department of Chemistry, Biology and Biotechnology, Institute of Civil Engineering and Energetics, Faculty of Civil Engineering and Environmental Science, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (E.G.); (G.Ś.); (M.W.); (N.P.); (W.L.)
| | - Ewelina Gołębiewska
- Department of Chemistry, Biology and Biotechnology, Institute of Civil Engineering and Energetics, Faculty of Civil Engineering and Environmental Science, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (E.G.); (G.Ś.); (M.W.); (N.P.); (W.L.)
| | - Liliana Mazur
- Department of General and Coordination Chemistry and Crystallography, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, M. C. Skłodowskiej Sq. 2, 20-031 Lublin, Poland;
| | - Hanna Lewandowska
- Institute of Nuclear Chemistry and Technology, 16 Dorodna Street, 03-195 Warsaw, Poland; (H.L.); (M.P.)
| | - Marek Pruszyński
- Institute of Nuclear Chemistry and Technology, 16 Dorodna Street, 03-195 Warsaw, Poland; (H.L.); (M.P.)
- NOMATEN Centre of Excellence, National Centre of Nuclear Research, 7 Andrzeja Soltana Street, 05-400 Otwock, Poland
| | - Grzegorz Świderski
- Department of Chemistry, Biology and Biotechnology, Institute of Civil Engineering and Energetics, Faculty of Civil Engineering and Environmental Science, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (E.G.); (G.Ś.); (M.W.); (N.P.); (W.L.)
| | - Marta Wyrwas
- Department of Chemistry, Biology and Biotechnology, Institute of Civil Engineering and Energetics, Faculty of Civil Engineering and Environmental Science, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (E.G.); (G.Ś.); (M.W.); (N.P.); (W.L.)
| | - Natalia Pawluczuk
- Department of Chemistry, Biology and Biotechnology, Institute of Civil Engineering and Energetics, Faculty of Civil Engineering and Environmental Science, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (E.G.); (G.Ś.); (M.W.); (N.P.); (W.L.)
| | - Włodzimierz Lewandowski
- Department of Chemistry, Biology and Biotechnology, Institute of Civil Engineering and Energetics, Faculty of Civil Engineering and Environmental Science, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland; (E.G.); (G.Ś.); (M.W.); (N.P.); (W.L.)
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Aneklaphakij C, Saigo T, Watanabe M, Naake T, Fernie AR, Bunsupa S, Satitpatipan V, Tohge T. Diversity of Chemical Structures and Biosynthesis of Polyphenols in Nut-Bearing Species. FRONTIERS IN PLANT SCIENCE 2021; 12:642581. [PMID: 33889165 PMCID: PMC8056029 DOI: 10.3389/fpls.2021.642581] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 02/25/2021] [Indexed: 05/27/2023]
Abstract
Nuts, such as peanut, almond, and chestnut, are valuable food crops for humans being important sources of fatty acids, vitamins, minerals, and polyphenols. Polyphenols, such as flavonoids, stilbenoids, and hydroxycinnamates, represent a group of plant-specialized (secondary) metabolites which are characterized as health-beneficial antioxidants within the human diet as well as physiological stress protectants within the plant. In food chemistry research, a multitude of polyphenols contained in culinary nuts have been studied leading to the identification of their chemical properties and bioactivities. Although functional elucidation of the biosynthetic genes of polyphenols in nut species is crucially important for crop improvement in the creation of higher-quality nuts and stress-tolerant cultivars, the chemical diversity of nut polyphenols and the key biosynthetic genes responsible for their production are still largely uncharacterized. However, current technical advances in whole-genome sequencing have facilitated that nut plant species became model plants for omics-based approaches. Here, we review the chemical diversity of seed polyphenols in majorly consumed nut species coupled to insights into their biological activities. Furthermore, we present an example of the annotation of key genes involved in polyphenolic biosynthesis in peanut using comparative genomics as a case study outlining how we are approaching omics-based approaches of the nut plant species.
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Affiliation(s)
- Chaiwat Aneklaphakij
- Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
- Graduate School of Biological Science, Nara Institute of Science and Technology, Ikoma, Japan
| | - Tomoki Saigo
- Graduate School of Biological Science, Nara Institute of Science and Technology, Ikoma, Japan
| | - Mutsumi Watanabe
- Graduate School of Biological Science, Nara Institute of Science and Technology, Ikoma, Japan
| | - Thomas Naake
- Max-Planck-Institute of Molecular Plant Physiology, Potsdam, Germany
| | | | - Somnuk Bunsupa
- Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Veena Satitpatipan
- Department of Pharmacognosy, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Takayuki Tohge
- Graduate School of Biological Science, Nara Institute of Science and Technology, Ikoma, Japan
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Characterization and Quantification of Luteolin-Metal Complexes in Aqueous Extract of Lonicerae Japonicae Flos and Huangshan Wild Chrysanthemum. Int J Anal Chem 2021; 2021:6677437. [PMID: 33777144 PMCID: PMC7979300 DOI: 10.1155/2021/6677437] [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: 11/03/2020] [Revised: 02/08/2021] [Accepted: 03/01/2021] [Indexed: 11/30/2022] Open
Abstract
Luteolin is a flavonoid compound widely found in vegetables, fruits, and medicinal plants. In this study, the reaction conditions for luteolin and five metal ions (Ca2+, Mg2+, Zn2+, Fe3+, and Cu2+) to form complexes in hot water were optimized, which was at a molar ratio of 1 : 1 for luteolin and metal ions at 90°C in a volume of 20 mL for 2 h, and the ability of luteolin to form complexes with Cu2+ was the strongest. The DPPH scavenging test showed that luteolin exerted a dose-dependent effect on the clearance of free radicals; luteolin-Cu2+ complexes and luteolin-Fe3+ complexes accentuated the clearance of free radicals. Furthermore, we used high performance liquid chromatography (HPLC) to analyze luteolin in samples from two medicinal plants, obtained from the dissolution of aqueous extracts in two different solvents. The results showed that the peak areas for luteolin in the samples dissolved in 20% formic acid-methanol were significantly larger than those from the samples dissolved in methanol alone, with increases in the peak area being 135.6% (Lonicerae Japonicae Flos), and 161.16% (Huangshan wild chrysanthemum). The aforementioned results indicate that complexes formed from organic compounds and metal ions are present in the decoction of a plant.
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Yellow Lake Pigments from Weld in Art: Investigating the Winsor & Newton 19th Century Archive. HERITAGE 2021. [DOI: 10.3390/heritage4010026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Weld (Reseda luteola) was one of the main sources of yellow dyes used for dyeing textiles and to prepare artists’ pigments in Europe until the 19th century. For the first time, this work explores the technology of preparing weld lake pigments in the 19th century by Winsor & Newton (W&N), a renowned supplier of artists’ materials. Five recipes were discovered in the W&N 19th century Archive Database and reconstructed in the laboratory. W&N was extracting weld in neutral and basic media, and preparing the insoluble lake by complexation with Al3+ in the form of alum (KAl(SO4)2•12H2O) or hydrated alumina (Al(OH)3). Five yellow lake pigments were successfully obtained and characterized by High-Performance Liquid Chromatography-Diode Array Detector (HPLC-DAD) and Fourier Transform Infrared Spectroscopy (FTIR). Their chromatographic profiles display as main yellows, luteolin 7-O-glucoside (Lut-7-O-glu) or both Lut-7-O-glu plus luteolin 3′,7-O-glucoside (Lut-3’,7-O-glu). In two of the processes, the presence of gypsum (CaSO4•2H2O) was unequivocally detected by FTIR, being formed as a by-product. This work offers the first identification of weld lake pigments’ characteristic infrared bands. The W&N Database proved again to be a unique source of information on 19th-century artists’ materials and their commercial preparation. The knowledge gain is essential to ensure effective conservation and authentication procedures.
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Wang Z, Zeng M, Wang Z, Qin F, Chen J, He Z. Dietary Luteolin: A Narrative Review Focusing on Its Pharmacokinetic Properties and Effects on Glycolipid Metabolism. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:1441-1454. [PMID: 33522240 DOI: 10.1021/acs.jafc.0c08085] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Luteolin, a flavone subclass of flavonoids, is commonly found in food plants and has multiple biological activities. Recently, evidence is growing with regard to the potential of luteolin intake to beneficially affect glycolipid metabolism disorders (GLMDs), particularly insulin resistance, diabetes, and obesity. The aim of this contribution is to provide an overview of recent advances in identifying and understanding the pharmacokinetic properties (absorption, metabolism, and bioavailability) of luteolin, its regulatory effects on glycolipid metabolism, and the underlying mechanisms of action of luteolin in the brain, liver, adipose tissues, and other tissues/organs. Collectively, luteolin or its principal metabolites may contribute to counteracting GLMDs, especially for human obesity and diabetes.
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Affiliation(s)
- Zhenyu Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Maomao Zeng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Zhaojun Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Fang Qin
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Jie Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Zhiyong He
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
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Kaur M, Kaushal R. Synthesis, characterization and
α
‐amylase and
α
‐glucosidase inhibition studies of novel vanadyl chalcone complexes. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mandeep Kaur
- Department of Chemistry National Institute of Technology Hamirpur India
| | - Raj Kaushal
- Department of Chemistry National Institute of Technology Hamirpur India
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31
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Experimental and computational studies of the interaction of gemifloxacin and manganese (II) gemifloxacin complex with DNA. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129248] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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32
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Pitchaimani J, Rajkumar STRJ, Mahalingam SM, Philip Anthony S, Moon D, Madhu V. Coordination diversity in transition metal complexes with 4-aminoantipyrine tethered bis(imino)pyridine ligand: structures, superoxide dismutase and anticancer properties. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1853109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Jayaraman Pitchaimani
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, India
| | | | - S. M. Mahalingam
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Kancheepuram, India
| | | | - Dohyun Moon
- Beamline Department, Pohang Accelerator Laboratory, Pohang, Gyeongbuk, Korea
| | - Vedichi Madhu
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, Tamil Nadu, India
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Zheng K, Xiong Y, Li Z, Peng L, Guo Q, Li X, Deng X. ESI-TOF MS analysis and DNA cleavage activity of complexes formed by luteolin and five metal ions in hot water. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1737820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Kangkang Zheng
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
| | - Yunhao Xiong
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
| | - Zhimin Li
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
| | - Liang Peng
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
| | - Qianhui Guo
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
| | - Xiaojun Li
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
| | - Xuezhen Deng
- Jiangxi Provincial Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science & Technology Normal University, Nanchang, China
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Gawlik-Dziki U, Sugier P, Dziki D, Sugier D, Pecio Ł. Water Soldier Stratiotes aloides L.-Forgotten Famine Plant With Unique Composition and Antioxidant Properties. Molecules 2020; 25:molecules25215065. [PMID: 33142839 PMCID: PMC7662255 DOI: 10.3390/molecules25215065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/24/2020] [Accepted: 10/28/2020] [Indexed: 11/16/2022] Open
Abstract
Stratiotes aloides L. is common water plant in central Poland. Due to its expansive character, S. aloides L. can strongly affect the functioning of aquatic ecosystems. S. aloides L. was an important famine plant in central Poland. This plant was commonly collected and cooked until the turn of the 20th century. It has also been used to heal wounds, especially when these are made by an iron implement. The objective of the present work was to study the phenolic profile in the leaves and roots of S. aloides as well as their antioxidant potential and ability to inhibit lipoxygenase (LOX) in the light of their potential bioaccessibility. The dominant compound in its leaves was luteolin-7-O-hexoside-glucuronide (5.84 mg/g DW), whereas the dominant root component was chrysoeriol-7-O-hexoside-glucuronide (0.83 mg/g DW). Infusions from leaves, roots, and their 1:1 (v/v) mixture contained potentially bioaccessible antiradical compounds. S. aloides is a good source of water-extractable reductive compounds. Especially valuable are the leaves of this plant. The roots of S. aloides contained very active hydrophilic compounds able to chelate metal ions. However, their potential bioaccessibility was relatively low. The hydrophilic compounds from the leaves were the most effective XO inhibitors (EC50 = 9.91 mg DW/mL). The water-extractable compounds derived from the leaves and roots acted as uncompetitive LOX inhibitors.
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Affiliation(s)
- Urszula Gawlik-Dziki
- Department of Biochemistry and Food Chemistry, University of Life Sciences, 8 Skromna Str., 20-704 Lublin, Poland
- Correspondence:
| | - Piotr Sugier
- Department of Botany, Mycology and Ecology, Institute of Biological Sciences, Maria Curie-Skłodowska University, 19 Akademicka Str., 20-033 Lublin, Poland;
| | - Dariusz Dziki
- Department of Thermal Technology and Food Process Engineering, University of Life Sciences in Lublin, 31 Głęboka St., 20-612 Lublin, Poland;
| | - Danuta Sugier
- Department of Industrial and Medicinal Plants, University of Life Sciences in Lublin, 15 Akademicka Street, 20-950 Lublin, Poland;
| | - Łukasz Pecio
- Department of Biochemistry and Crop Quality, Institute of Soil Science and Plant Cultivation State Research Institute, Czartoryskich Str. 8, 24-100 Pulawy, Poland;
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Jafar M, Khalid MS, Aldossari MFE, Amir M, Alshaer FI, Adrees FAA, Gilani SJ, Alshehri S, Hassan MZ, Imam SS. Formulation of Curcumin-β-cyclodextrin-polyvinylpyrrolidone supramolecular inclusion complex: experimental, molecular docking, and preclinical anti-inflammatory assessment. Drug Dev Ind Pharm 2020; 46:1524-1534. [PMID: 32808552 DOI: 10.1080/03639045.2020.1810268] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This research planned to ameliorate an aqueous solubility and dissolution of Curcumin (CUR) by the formulation of inclusion complex with β-cyclodextrin (β-CD) and polyvinylpyrrolidone (PVP). The phase solubility study was performed to assess the solubility of CUR. The prepared CUR complex assessed for dissolution study, physicochemical evaluation, in-vitro antioxidant activity, molecular modeling, and anti-inflammatory assessment. The pivotal findings of phase-solubility studies demonstrate apparent stability constant (Kc) and complexation efficiency (CE) values for CUR-β-CD and CUR-β-CD-PVP complex was 175.4 M -1, 1.15% and 833.3.2 M -1 and 5.21%, respectively. The characterization results revealed amorphization of crystalline state (CUR) into amorphous state. The maximum drug release found with the ternary CUR complex (F7), i.e. 45.41 ± 3.78% in 6 h study. The chemical shift in the NMR supports that the aromatic ring of CUR is completely complexed inside the β-CD cavity. The antioxidant activity of pure CUR was found to be 58.02 ± 2.21% and CUR ternary complex (F7) showed significantly higher activity to 96.02 ± 2.46%. The in-vivo effect of CUR complex (F7) was also found significantly higher than that of pure CUR. The molecular modeling study depicted that PVP increased the stability of the ternary complex by forming the link between CUR and β-CD. Thus, the ternary inclusion complex of CUR-β-CD-PVP could contribute as an innovative outcome in the enhancement of solubility and in-vivo activity.
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Affiliation(s)
- Mohammed Jafar
- Department of Pharmaceutics, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Mohammed Saifuddin Khalid
- Department of Pharmacology, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Mashael Fehaid Eid Aldossari
- Department of Pharmaceutics, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Mohd Amir
- Department of Natural Products and Alternative Medicine, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Fatima Ibrahim Alshaer
- Department of Pharmaceutics, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Fatima Ali Abdullah Adrees
- Department of Pharmaceutics, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Sadaf Jamal Gilani
- Department of Basic Health Sciences, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Sultan Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.,College of Pharmacy, Almaarefa University, Riyadh, Saudi Arabia
| | - Mohd Zaheen Hassan
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Syed Sarim Imam
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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Wang Q, Zhao H, Zhu M, Gao L, Cheng N, Cao W. Spectroscopy characterization, theoretical study and antioxidant activities of the flavonoids-Pb(II) complexes. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127919] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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37
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Recent Studies on the Antimicrobial Activity of Transition Metal Complexes of Groups 6–12. CHEMISTRY-SWITZERLAND 2020. [DOI: 10.3390/chemistry2020026] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Antimicrobial resistance is an increasingly serious threat to global public health that requires innovative solutions to counteract new resistance mechanisms emerging and spreading globally in infectious pathogens. Classic organic antibiotics are rapidly exhausting the structural variations available for an effective antimicrobial drug and new compounds emerging from the industrial pharmaceutical pipeline will likely have a short-term and limited impact before the pathogens can adapt. Inorganic and organometallic complexes offer the opportunity to discover and develop new active antimicrobial agents by exploiting their wide range of three-dimensional geometries and virtually infinite design possibilities that can affect their substitution kinetics, charge, lipophilicity, biological targets and modes of action. This review describes recent studies on the antimicrobial activity of transition metal complexes of groups 6–12. It focuses on the effectiveness of the metal complexes in relation to the rich structural chemical variations of the same. The aim is to provide a short vade mecum for the readers interested in the subject that can complement other reviews.
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Smit P, Cullere M, Dalle Zotte A, Balzan S, Hoffman LC, Novelli E. Effects of honeybush ( Cyclopia subternata) extract on physico-chemical, oxidative and sensory traits of typical Italian salami. Food Sci Nutr 2020; 8:2299-2306. [PMID: 32405387 PMCID: PMC7215206 DOI: 10.1002/fsn3.1509] [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: 11/07/2019] [Revised: 02/12/2020] [Accepted: 02/18/2020] [Indexed: 11/19/2022] Open
Abstract
Honeybush (Cyclopia subternata Vogel) is an indigenous South African shrub enjoyed as hot brewed tea. "Unfermented" honeybush is also a potential antioxidant bioactive extract for foodstuffs due to its polyphenol content. The effect of "unfermented" honeybush extract (Hob; 0.5%) was evaluated in typical Italian salami and compared with nitrate (Nit; 100 mg/kg) and a control (Ctl; without nitrate or honeybush). After 35 days of ripening, Hob had a higher (p < .01) water activity (0.928), compared with Ctl (0.923) and Nit (0.924). Final pH (5.35-5.24) was not affected by treatments. Lower lipid oxidation was observed in Hob and Nit treatments (p < .001) compared with Ctl. Internal color and odor intensity were similar among treatments. Salami with honeybush extract had less spontaneous outer surface mold growth whereas the Ctl showed intermediate growth (p < .05). Honeybush extract seems a promising natural ingredient with antioxidant action.
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Affiliation(s)
- Paula Smit
- Department of Animal Medicine, Production and HealthPadova UniversityAgripolisLegnaro (PD)Italy
- Department of Food ScienceUniversity of StellenboschStellenboschSouth Africa
| | - Marco Cullere
- Department of Animal Medicine, Production and HealthPadova UniversityAgripolisLegnaro (PD)Italy
| | - Antonella Dalle Zotte
- Department of Animal Medicine, Production and HealthPadova UniversityAgripolisLegnaro (PD)Italy
| | - Stefania Balzan
- Department of Comparative Biomedicine and Food SciencePadova UniversityAgripolisLegnaro (PD)Italy
| | - Louwrens Christiaan Hoffman
- Department of Animal SciencesUniversity of StellenboschStellenboschSouth Africa
- Centre for Nutrition and Food SciencesQueensland Alliance for Agriculture and Food Innovation (QAAFI)Health and Food Sciences PrecinctUniversity of QueenslandCoopers PlainsQldAustralia
| | - Enrico Novelli
- Department of Food ScienceUniversity of StellenboschStellenboschSouth Africa
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Alshehri S, Imam SS, Altamimi MA, Hussain A, Shakeel F, Elzayat E, Mohsin K, Ibrahim M, Alanazi F. Enhanced Dissolution of Luteolin by Solid Dispersion Prepared by Different Methods: Physicochemical Characterization and Antioxidant Activity. ACS OMEGA 2020; 5:6461-6471. [PMID: 32258881 PMCID: PMC7114142 DOI: 10.1021/acsomega.9b04075] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 03/11/2020] [Indexed: 05/26/2023]
Abstract
Luteolin (LT) is a poorly soluble bioactive compound that suffered bioavailability problems after oral administration. Hence, the aim of the proposed research work was to formulate and investigate various solid dispersions (SDs) of LT in order to enhance its dissolution and bioactivity. LT-SD was prepared using polyethylene glycol 4000 (PEG 4000) as a carrier at the mass ratios of 1:1, 1:2, and 1:4. LT-SD was prepared using different methods including fusion (FU), solvent evaporation (SE), and microwave irradiation (MI) methods. The prepared LT-SD was duly characterized in terms of differential scanning calorimetry (DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM), infrared (IR) spectroscopy, and nuclear magnetic resonance (NMR) and evaluated for dissolution and in vitro antioxidant activity. The results of DSC, XRD, SEM, IR, and NMR suggested the formation of LT-SD. After 90 min of the dissolution study, the results displayed that the % release of LT from prepared SD was significantly higher compared with the pure LT and its physical mixture dispersion (PMD). LT-SD prepared using the MI method displayed the maximum release of LT (i.e., 97.78 ± 4.41%) at a 1:2 mass ratio of LT:PEG 4000. The LT-SD prepared using the SE method displayed the maximum release of 93.78 ± 3.98% at a mass ratio of 1:4 of LT:PEG 4000. The SD prepared by the MI method showed enhanced dissolution due to higher aqueous solubility and the reduction of particle size. The solid-state characterization studies (DSC, XRD, SEM, IR, and NMR studies) suggested the morphological conversion of LT into the amorphous form from the crystalline state. The results of the antioxidant study revealed that the formation LT-SD displayed significantly higher radical scavenging activity than the pure LT. Therefore, SD obtained using PEG 4000 could be a potential strategy for maximizing the solubility, in vitro dissolution, and therapeutic efficacy of LT.
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From Xanthine Oxidase Inhibition to In Vivo Hypouricemic Effect: An Integrated Overview of In Vitro and In Vivo Studies with Focus on Natural Molecules and Analogues. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:9531725. [PMID: 32184901 PMCID: PMC7060854 DOI: 10.1155/2020/9531725] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 12/10/2019] [Accepted: 12/24/2019] [Indexed: 01/05/2023]
Abstract
Hyperuricemia is characterized by elevated uric acid (UA) levels on blood, which can lead to gout, a common pathology. These high UA levels are associated with increased purine ingestion and metabolization and/or its decreased excretion. In this field, xanthine oxidase (XO), by converting hypoxanthine and xanthine to UA, plays an important role in hyperuricemia control. Based on limitations and adverse effects associated with the use of allopurinol and febuxostat, the most known approved drugs with XO inhibitory effect, the search for new molecules with XO activity is growing. However, despite the high number of studies, it was found that the majority of tested products with relevant XO inhibition were left out, and no further pharmacological evaluation was performed. Thus, in the present review, available information published in the past six years concerning isolated molecules with in vitro XO inhibition complemented with cytotoxicity evaluation as well as other relevant studies, including in vivo hypouricemic effect, and pharmacokinetic/pharmacodynamic profile was compiled. Interestingly, the analysis of data collected demonstrated that molecules from natural sources or their mimetics and semisynthetic derivatives constitute the majority of compounds being explored at the moment by means of in vitro and in vivo animal studies. Therefore, several of these molecules can be useful as lead compounds and some of them can even have the potential to be considered in the future clinical candidates for the treatment of hyperuricemia.
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Alshehri S, Imam SS, Altamimi MA, Jafar M, Hassan MZ, Hussain A, Ahad A, Mahdi W. Host-guest complex of β-cyclodextrin and pluronic F127 with Luteolin: Physicochemical characterization, anti-oxidant activity and molecular modeling studies. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101356] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Yu S, Jiang J, Li W. Co-cultured Lepista sordida and Pholiota nameko polysaccharide-iron(iii) chelates exhibit good antioxidant activity. RSC Adv 2020; 10:27259-27265. [PMID: 35516923 PMCID: PMC9055521 DOI: 10.1039/d0ra03258a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 05/18/2020] [Indexed: 11/24/2022] Open
Abstract
In the present study, the structural characteristics and antioxidant activities of polysaccharide from the co-cultured Lepista sordida and Pholiota nameko and its polysaccharide-iron(iii) chelates were determined. Two polysaccharide fractions named CP-1 and CP-3 were isolated previously from polysaccharide of the fermentation liquid of the co-cultured Lepista sordida and Pholiota nameko. And their chemical structures were measured by FT-IR infrared spectroscopy, TG analysis, X-ray diffraction and 1H NMR spectroscopy. The results suggested that polysaccharides were chelated with iron(iii) by –OH and –COOH groups, forming a stable structure of β-FeOOH and improving crystallinity. Furthermore, the antioxidant activities of polysaccharide-iron(iii) chelates exhibited stronger hydroxyl radical and superoxide radical scavenging activity than the polysaccharides. Therefore, the polysaccharide-iron(iii) chelates could be used as a potential iron supplement. In the present study, the structural characteristics and antioxidant activities of polysaccharide from the co-cultured Lepista sordida and Pholiota nameko and its polysaccharide-iron(iii) chelates were determined.![]()
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Affiliation(s)
- Shuping Yu
- Qingdao Agricultural University
- Qingdao
- China
- Shandong Provincial Laboratory of Applied Mycology
- Qingdao Agricultural University
| | - Jikang Jiang
- Qingdao Agricultural University
- Qingdao
- China
- Shandong Provincial Laboratory of Applied Mycology
- Qingdao Agricultural University
| | - Wenxiang Li
- Qingdao Agricultural University
- Qingdao
- China
- Shandong Provincial Laboratory of Applied Mycology
- Qingdao Agricultural University
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Metal complexes of flavonoids: their synthesis, characterization and enhanced antioxidant and anticancer activities. Future Med Chem 2019; 11:2845-2867. [DOI: 10.4155/fmc-2019-0237] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Flavonoids are polyphenolic compounds of natural origin. They are extensively studied within drug discovery programs due to their wide ranging biological activities such as antimicrobial, antioxidant, antitumor, neuroprotective and cardioprotective properties. The ability of flavonoids to coordinate with metal atoms has provided new leads for drug discovery programs, with better pharmacological activities and clinical profiles than the parent flavonoids. In this review, the enhanced antioxidant and anticancer activities of flavonoid metal complexes versus the parent flavonoids are discussed. Possible mechanisms of action for the metal complexes, such as DNA binding and apoptosis induction, are also presented alongside an overview of the synthesis of the metal complexes, and the different techniques used for their characterization.
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Chen SJ, Du KZ, Li J, Chang YX. A chitosan solution-based vortex-forced matrix solid phase dispersion method for the extraction and determination of four bioactive constituents from Ligustri Lucidi Fructus by high performance liquid chromatography. J Chromatogr A 2019; 1609:460509. [PMID: 31515076 DOI: 10.1016/j.chroma.2019.460509] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 08/26/2019] [Accepted: 09/02/2019] [Indexed: 12/17/2022]
Abstract
A simple and efficient sample preparation method to extract four bioactive compounds (echinacoside, specnuezhenide, oleuropein and nuezhenoside G13) from Ligustri Lucidi Fructus was established by vortex-forced matrix solid phase dispersion (VFMSPD) method. Chitosan solution was applied as green eluent in this procedure and Celite AZO was employed as dispersant. High performance liquid chromatography (HPLC) equipped with ultraviolet (UV) detector was used to analyze the target analytes. The best result of the investigation was obtained with Celite AZO as dispersant, sample/ dispersant ratio as 1:1, grinding for 2 min, 1 mL high-viscosity chitosan solution (0.5 mg mL-1) used as the elution reagent and vortex mixing for 1.5 min. The method exhibit a good linearity for the analytes (r2 > 0.999). The absolute recoveries of the four target compounds in Ligustri Lucidi Fructus ranged from 90.7% to 98.8% and the relative recoveries of the target compounds ranged from 99.2% to 102% (RSD ≤ 3.4%), which were obtained by the final optimization method. Consequently, the newly developed chitosan solution-based vortex-forced matrix solid phase dispersion (MSPD) combined with HPLC could be efficiently applied to extract and analyze the target compounds in Ligustri Lucidi Fructus samples.
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Affiliation(s)
- Shu-Jing Chen
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301600, China; Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 301600, China
| | - Kun-Ze Du
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301600, China; Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 301600, China
| | - Jin Li
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301600, China; Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 301600, China
| | - Yan-Xu Chang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301600, China; Tianjin Key Laboratory of Phytochemistry and Pharmaceutical Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin 301600, China.
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Shinde P, Agraval H, Singh A, Yadav UC, Kumar U. Synthesis of luteolin loaded zein nanoparticles for targeted cancer therapy improving bioavailability and efficacy. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.04.044] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Tang J, Huang R, Zheng S, Jiang S, Yu H, Li Z, Wang J. A sensitive and selective electrochemical sensor based on graphene quantum dots/gold nanoparticles nanocomposite modified electrode for the determination of luteolin in peanut hulls. Microchem J 2019. [DOI: 10.1016/j.microc.2018.12.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Deng SP, Yang YL, Cheng XX, Li WR, Cai JY. Synthesis, Spectroscopic Study and Radical Scavenging Activity of Kaempferol Derivatives: Enhanced Water Solubility and Antioxidant Activity. Int J Mol Sci 2019; 20:E975. [PMID: 30813425 PMCID: PMC6412309 DOI: 10.3390/ijms20040975] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 02/13/2019] [Accepted: 02/19/2019] [Indexed: 12/19/2022] Open
Abstract
Kaempferol (Kae) is a natural flavonoid with potent antioxidant activity, but its therapeutic use is limited by its low aqueous solubility. Here, a series of Kae derivatives were synthesized to improve Kae dissolution property in water and antioxidant activity. These compounds included sulfonated Kae (Kae-SO₃), gallium (Ga) complexes with Kae (Kae-Ga) and Kae-SO₃ (Kae-SO₃-Ga). The compound structures were characterized by high-resolution mass spectrometry (HRMS), nuclear magnetic resonance (NMR) spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy and thermal methods (TG/DSC). The results showed that a sulfonic group (-SO₃) was successfully tethered on the C3' of Kae to form Kae-SO₃. And in the metal complexation, 4-CO and 3-OH of the ligand participated in the coordination with Ga(III). The metal-to-ligand ratio 1:2 was suggested for both complexes. Interestingly, Kae-SO₃-Ga was obviously superior to other compounds in terms of overcoming the poor water-solubility of free Kae, and the solubility of Kae-SO₃-Ga was about 300-fold higher than that of Kae-Ga. Furthermore, the evaluation of antioxidant activities in vitro was carried out for Kae derivatives by using α,α-diphenyl-β-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzo-thiazoline-6-sulfonic acid) diammonium salt (ABTS) free radical scavenging. The results showed that Kae-SO₃-Ga was also optimal for scavenging free radicals in a dose-dependent manner. These data demonstrate that sulfonate kaempferol-gallium complex has a promising future as a potential antioxidant and as a potential therapeutic agent for further biomedical studies.
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Affiliation(s)
- Sui-Ping Deng
- Department of Chemistry, Jinan University, Guangzhou 510632, China.
| | - Yi-Li Yang
- Department of Chemistry, Jinan University, Guangzhou 510632, China.
| | - Xing-Xing Cheng
- Department of Chemistry, Jinan University, Guangzhou 510632, China.
| | - Wen-Rong Li
- Department of Chemistry, Jinan University, Guangzhou 510632, China.
| | - Ji-Ye Cai
- Department of Chemistry, Jinan University, Guangzhou 510632, China.
- State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Macau 000853, China.
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