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Singh A, Singh J, Parween G, Khator R, Monga V. A comprehensive review of apigenin a dietary flavonoid: biological sources, nutraceutical prospects, chemistry and pharmacological insights and health benefits. Crit Rev Food Sci Nutr 2024:1-37. [PMID: 39154213 DOI: 10.1080/10408398.2024.2390550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2024]
Abstract
A multitude of plant-derived bioactive compounds have shown significant promise in preventing chronic illnesses, with flavonoids constituting a substantial class of naturally occurring polyphenolic compounds. Apigenin, a flavone identified as 4',5,7-trihydroxyflavone, holds immense promise as a preventative agent against chronic illnesses. Despite its extensive research and recognized nutraceutical value, its therapeutic application remains underexplored, necessitating further clinical investigations. This review delves into the biological sources, nutraceutical prospects, chemistry, pharmacological insights, and health benefits of apigenin. Through multifaceted analytical studies, we explore its diverse pharmacological profile and potential therapeutic applications across various health domains. The manuscript comprehensively examines apigenin's role as a neuroprotective , anti-inflammatory compound, and a potent antioxidant agent. Additionally, its efficacy in combating cardiovascular diseases, anti-diabetic properties, and anticancer potential has been discussed. Furthermore, the antimicrobial attributes and the challenges surrounding its bioavailability, particularly from herbal supplements have been addressed. Available in diverse forms including tablets, capsules, solid dispersions, co-crystals, inclusion complexes and nano formulations. Additionally, it is prevalent as a nutraceutical supplement in herbal formulations. While strides have been made in overcoming pharmacokinetic hurdles, further research into apigenin's clinical effectiveness and bioavailability from herbal supplements remains imperative for its widespread utilization in preventive medicine.
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Affiliation(s)
- Abhinav Singh
- Drug Design and Molecular Synthesis Laboratory, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, VPO-Ghudda, Bathinda, India
| | - Jagjit Singh
- Drug Design and Molecular Synthesis Laboratory, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, VPO-Ghudda, Bathinda, India
| | - Gulistan Parween
- Drug Design and Molecular Synthesis Laboratory, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, VPO-Ghudda, Bathinda, India
| | - Rakesh Khator
- Drug Design and Molecular Synthesis Laboratory, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, VPO-Ghudda, Bathinda, India
| | - Vikramdeep Monga
- Drug Design and Molecular Synthesis Laboratory, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, VPO-Ghudda, Bathinda, India
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Charalambous D, Christoforou M, Christou K, Christou M, Ververis A, Andreou M, Christodoulou K, Koutsoulidou A, Papachrysostomou C, Pantelidou M. Saponin and Phenolic Composition and Assessment of Biological Activities of Saponaria officinalis L. Root Extracts. PLANTS (BASEL, SWITZERLAND) 2024; 13:1982. [PMID: 39065509 PMCID: PMC11281274 DOI: 10.3390/plants13141982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2024] [Revised: 07/11/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024]
Abstract
The purpose of this study was to identify the saponin and phenolic components in root extracts of Saponaria officinalis, a widespread species, found in Cyprus. A total of six major saponins, including gypsogenin and gypsogenic acid derivatives, as well as saponariosides C, D, and E, were identified using UHPLC/Q-TOF-MS analysis, with gypsogenin derivatives being the most common saponins detected through quantitative analysis. A total of six phenolic compounds were also identified, including rutin, quercetin galactoside, syringic acid, apigenin, protocatechuic, and vanillic acid. In addition to their saponin and phenolic contents, the root extracts were prepared through different extraction methods, and their biological activity was assessed. All samples demonstrated antioxidant capacity, as well as antibacterial activity, against four bacterial strains (Escherichia coli, Staphylococcus aureus, Enterococcus faecalis, and Salmonella enteritidis), with the acetone extract presenting higher susceptibility. The evaluation of anticancer activity in A375 (human malignant melanoma), HeLa (human cervical epithelioid carcinoma), and HaCaT (healthy human keratinocytes) cell lines revealed that the acetone extract of S. officinalis extract demonstrated a significant inhibitory effect on the proliferation of A375 cells in a concentration-dependent manner. None of the extracts demonstrated anti-neurotoxic potential against Aβ25-35 cytotoxic peptides. The results of this study support previous findings that reveal that the Saponaria species are an excellent natural source of biologically active compounds with antioxidant, antimicrobial, and anticancer properties.
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Affiliation(s)
- Despina Charalambous
- Frederick Research Center, Nicosia 1036, Cyprus; (M.C.); (K.C.)
- Department of Pharmacy, School of Health Sciences, Frederick University, Nicosia 1036, Cyprus
| | | | | | - Melina Christou
- Molecular Genetics, Function & Therapy Department, The Cyprus Institute of Neurology and Genetics, 6 Iroon Avenue, P.O. Box 23462, Nicosia 1683, Cyprus; (M.C.); (A.K.)
| | - Antonis Ververis
- Neurogenetics Department, The Cyprus Institute of Neurology and Genetics, Nicosia 2371, Cyprus; (A.V.); (K.C.)
| | - Marios Andreou
- Nature Conservation Unit, Frederick University, Nicosia 1036, Cyprus;
| | - Kyproula Christodoulou
- Neurogenetics Department, The Cyprus Institute of Neurology and Genetics, Nicosia 2371, Cyprus; (A.V.); (K.C.)
| | - Andrie Koutsoulidou
- Molecular Genetics, Function & Therapy Department, The Cyprus Institute of Neurology and Genetics, 6 Iroon Avenue, P.O. Box 23462, Nicosia 1683, Cyprus; (M.C.); (A.K.)
| | | | - Maria Pantelidou
- Frederick Research Center, Nicosia 1036, Cyprus; (M.C.); (K.C.)
- Department of Pharmacy, School of Health Sciences, Frederick University, Nicosia 1036, Cyprus
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Tawfiq Jaffer N, Mohamed-Ameen Hasan R, Abd Alrhman Taqa G. Influence of apigenin and seashell nanoparticles on the biological attitude of soft denture liner. Saudi Dent J 2024; 36:712-717. [PMID: 38766293 PMCID: PMC11096622 DOI: 10.1016/j.sdentj.2024.02.013] [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: 10/29/2023] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 05/22/2024] Open
Abstract
Objective To determine the "biocompatibility" of a soft denture liner impregnated with apigenin and seashell nanoparticles via histopathological assessment in rabbit models. Materials and Methods Twenty-six albino rabbits aged 5-7 months and weighing, 1.25-1.5 kg were randomly divided into apigenin and seashell-modified groups, n = 13 each). A total of 104 disc-shaped specimens (3 mm thick and 5 mm in diameter) of a heat-cured soft liner, (GC, USA) were prepared. In the apigenin group, each rabbit was subcutaneously implanted with 4 specimens: (positive control, unmodified-liner, and 0.25 %, 0.5 %, and 1 % of apigenin-modified liner). In the seashell group, rabbits were implanted with positive control and 1.25 %, 2.5 % and 5 % seashell-modified liner. A non-implanted incision was performed for all the groups as a negative control. Histopathological observations were evaluated according to inflammatory and angiogenesis scores 14 days after implantation. Results A significant decrease in inflammatory responses and an increase in angiogenesis were observed for both apigenin and seashell-modified soft liner groups. Higher compatibility effectiveness was positively related to and recorded in the increased ratios of nanoparticles within the soft liner material. Conclusion Apigenin and seashell-modified soft liners at higher ratios 1% and 5% respectively were more compatible with the rabbit mucosa.
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Affiliation(s)
- Nadia Tawfiq Jaffer
- Prosthodontics Department, College of Dentistry, Duhok University, Duhok, Iraq
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Stegmüller J, Rodríguez Estévez M, Shu W, Gläser L, Myronovskyi M, Rückert-Reed C, Kalinowski J, Luzhetskyy A, Wittmann C. Systems metabolic engineering of the primary and secondary metabolism of Streptomyces albidoflavus enhances production of the reverse antibiotic nybomycin against multi-resistant Staphylococcus aureus. Metab Eng 2024; 81:123-143. [PMID: 38072358 DOI: 10.1016/j.ymben.2023.12.004] [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: 08/11/2023] [Revised: 11/17/2023] [Accepted: 12/01/2023] [Indexed: 01/23/2024]
Abstract
Nybomycin is an antibiotic compound with proven activity against multi-resistant Staphylococcus aureus, making it an interesting candidate for combating these globally threatening pathogens. For exploring its potential, sufficient amounts of nybomycin and its derivatives must be synthetized to fully study its effectiveness, safety profile, and clinical applications. As native isolates only accumulate low amounts of the compound, superior producers are needed. The heterologous cell factory S. albidoflavus 4N24, previously derived from the cluster-free chassis S. albidoflavus Del14, produced 860 μg L-1 of nybomycin, mainly in the stationary phase. A first round of strain development modulated expression of genes involved in supply of nybomycin precursors under control of the common Perm* promoter in 4N24, but without any effect. Subsequent studies with mCherry reporter strains revealed that Perm* failed to drive expression during the product synthesis phase but that use of two synthetic promoters (PkasOP* and P41) enabled strong constitutive expression during the entire process. Using PkasOP*, several rounds of metabolic engineering successively streamlined expression of genes involved in the pentose phosphate pathway, the shikimic acid pathway, supply of CoA esters, and nybomycin biosynthesis and export, which more than doubled the nybomycin titer to 1.7 mg L-1 in the sixth-generation strain NYB-6B. In addition, we identified the minimal set of nyb genes needed to synthetize the molecule using single-gene-deletion strains. Subsequently, deletion of the regulator nybW enabled nybomycin production to begin during the growth phase, further boosting the titer and productivity. Based on RNA sequencing along the created strain genealogy, we discovered that the nyb gene cluster was unfavorably downregulated in all advanced producers. This inspired removal of a part and the entire set of the four regulatory genes at the 3'-end nyb of the cluster. The corresponding mutants NYB-8 and NYB-9 exhibited marked further improvement in production, and the deregulated cluster was combined with all beneficial targets from primary metabolism. The best strain, S. albidoflavus NYB-11, accumulated up to 12 mg L-1 nybomycin, fifteenfold more than the basic strain. The absence of native gene clusters in the host and use of a lean minimal medium contributed to a selective production process, providing an important next step toward further development of nybomycin.
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Affiliation(s)
- Julian Stegmüller
- Institute of Systems Biotechnology, Saarland University, Saarbrücken, Germany
| | | | - Wei Shu
- Institute of Systems Biotechnology, Saarland University, Saarbrücken, Germany
| | - Lars Gläser
- Institute of Systems Biotechnology, Saarland University, Saarbrücken, Germany
| | - Maksym Myronovskyi
- Department of Pharmaceutical Biotechnology, Saarland University, Saarbrücken, Germany
| | | | - Jörn Kalinowski
- Center for Biotechnology, Bielefeld University, Bielefeld, Germany
| | - Andriy Luzhetskyy
- Department of Pharmaceutical Biotechnology, Saarland University, Saarbrücken, Germany
| | - Christoph Wittmann
- Institute of Systems Biotechnology, Saarland University, Saarbrücken, Germany.
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Pathak D, Mazumder A. Potential of Flavonoids as Promising Phytotherapeutic Agents to Combat Multidrug-Resistant Infections. Curr Pharm Biotechnol 2024; 25:1664-1692. [PMID: 38031767 DOI: 10.2174/0113892010271172231108190233] [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: 07/08/2023] [Revised: 09/18/2023] [Accepted: 10/03/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND Considering the limited number of current effective treatments, Multidrug- Resistant (MDR) illnesses have grown to be a serious concern to public health. It has become necessary to look for new antimicrobial drugs because of the emergence of resistance to numerous kinds of antibiotics. The use of flavonoids is one phytotherapeutic strategy that has been researched as a potential remedy for this issue. Secondary plant compounds called flavonoids have been found to have an antibacterial effect against resistant microorganisms. OBJECTIVE This review seeks to give readers a glimpse into contemporary studies on flavonoids' potential to fight MDR infections. METHODS A systematic search was conducted on electronic databases (PubMed, Scopus, and Google Scholar) using relevant keywords such as flavonoids, MDR infections, antimicrobial activity, and resistance microbes. Studies that investigated the antimicrobial activity of flavonoids against resistant microbes were included in this review. RESULTS Most research found that flavonoids have antibacterial efficacy against resistant microorganisms, and some also showed that they have synergistic benefits with traditional antibiotics. The flavonoids quercetin, kaempferol, apigenin, and luteolin were the most often investigated ones. According to research, flavonoids affect microbial gene expression, inhibit microbial enzymes, and disrupt the integrity of microbial cell membranes. Additionally, a few studies have noted the flavonoids' low toxicity and safety. CONCLUSION For the treatment of infections that are resistant to many drugs, flavonoids constitute a promising class of phytotherapeutic agents. To develop flavonoid-based treatment methods for treating MDR illnesses and assess the potential of flavonoids as adjuvants to conventional antimicrobial drugs, more study is required.
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Affiliation(s)
- Deepika Pathak
- Department of Pharmacy, Noida Institute of Engineering and Technology (Pharmacy Institute), Uttar Pradesh, India
| | - Avijit Mazumder
- Department of Pharmacy, Noida Institute of Engineering and Technology (Pharmacy Institute), Uttar Pradesh, India
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Fuzi M, Sokurenko E. Commensal Fitness Advantage May Contribute to the Global Dissemination of Multidrug-Resistant Lineages of Bacteria-The Case of Uropathogenic E. coli. Pathogens 2023; 12:1150. [PMID: 37764958 PMCID: PMC10536240 DOI: 10.3390/pathogens12091150] [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: 06/14/2023] [Revised: 09/01/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023] Open
Abstract
It is widely accepted that favorable fitness in commensal colonization is one of the prime facilitators of clonal dissemination in bacteria. The question arises as to what kind of fitness advantage may be wielded by uropathogenic strains of the two predominant fluoroquinolone- and multidrug-resistant clonal groups of E. coli-ST131-H30 and ST1193, which has permitted their unprecedented pandemic-like global expansion in the last few decades. The colonization-associated genes' content, carriage of low-cost plasmids, and integrons with weak promoters could certainly contribute to the fitness of the pandemic groups, although those genetic factors are common among other clonal groups as well. Also, ST131-H30 and ST1193 strains harbor fluoroquinolone-resistance conferring mutations targeting serine residues in DNA gyrase (GyrA-S83) and topoisomerase IV (ParC-S80) that, in those clonal backgrounds, might result in a commensal fitness benefit, i.e., beyond the antibiotic resistance per se. This fitness gain might have contributed not only to the widespread dissemination of these major clones in the healthcare setting but also to their long-term colonization of healthy individuals and, thus, circulation in the community, even in a low or no fluoroquinolone use environment. This evolutionary shift affecting commensal E. coli, initiated by mutations co-favorable in both antibiotics-treated patients and healthy individuals warrants more in-depth studies to monitor further changes in the epidemiological situation and develop effective measures to reduce the antibiotic resistance spread.
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Affiliation(s)
- Miklos Fuzi
- Independent Researcher, Seattle, WA 98195, USA
| | - Evgeni Sokurenko
- Department of Microbiology, University of Washington School of Medicine, 1705 NE Pacific St., Seattle, WA 98195, USA;
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CID12261165, a flavonoid compound as antibacterial agents against quinolone-resistant Staphylococcus aureus. Sci Rep 2023; 13:1725. [PMID: 36720958 PMCID: PMC9889749 DOI: 10.1038/s41598-023-28859-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 01/25/2023] [Indexed: 02/01/2023] Open
Abstract
Flavonoids are plant-produced secondary metabolites that are found ubiquitously. We have previously reported that apigenin, a class of flavonoid, has unique antimicrobial activity against Staphylococcus aureus (S. aureus), one of the major human pathogens. Apigenin inhibited fluoroquinolone-resistant S. aureus with DNA gyrase harboring the quinolone-resistant S84L mutation but did not inhibit wild-type DNA gyrase. In this study, we describe five flavonoids, quercetin, luteolin, kaempferol, baicalein, and commercially available CID12261165, that show similar antimicrobial activity against fluoroquinolone-resistant S. aureus. Among them, CID12261165 was the most effective with MIC values of ≤ 4 mg/L against quinolone-resistant S. aureus strains. In vitro DNA cleavage and supercoiling assays demonstrated inhibitory activity of CID12261165 against mutated DNA gyrase, whereas activity against wild-type DNA gyrase was not observed. CID12261165 also inhibited quinolone-resistant Enterococci with an MIC value of 8 mg/L. While fluoroquinolone-resistant amino acid replacements can improve the fitness of bacterial cells, it is unknown why quinolone-susceptible S. aureus strains were predominant before the introduction of fluoroquinolone. The present study discusses the current discrepancies in the interpretation of antimicrobial activities of flavonoids, as well as the possible reasons for the preservation of wild-type DNA gyrase wherein the environmental flavonoids cannot be ignored.
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Mohidin SRNSP, Moshawih S, Hermansyah A, Asmuni MI, Shafqat N, Ming LC. Cassava ( Manihot esculenta Crantz): A Systematic Review for the Pharmacological Activities, Traditional Uses, Nutritional Values, and Phytochemistry. J Evid Based Integr Med 2023; 28:2515690X231206227. [PMID: 37822215 PMCID: PMC10571719 DOI: 10.1177/2515690x231206227] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 06/08/2023] [Accepted: 09/16/2023] [Indexed: 10/13/2023] Open
Abstract
Cassava (Manihot esculenta Crantz) is considered one of the essential tuber crops, serving as a dietary staple food for various populations. This systematic review provides a comprehensive summary of the nutritional and therapeutic properties of cassava, which is an important dietary staple and traditional medicine. The review aims to evaluate and summarize the phytochemical components of cassava and their association with pharmacological activities, traditional uses, and nutritional importance in global food crises. To collect all relevant information, electronic databases; Cochrane Library, PubMed, Scopus, Web of Science, Google Scholar, and Preprint Platforms were searched for studies on cassava from inception until October 2022. A total of 1582 studies were screened, while only 34 were included in this review. The results of the review indicate that cassava has diverse pharmacological activities, including anti-bacterial, anti-cancer, anti-diabetic, anti-diarrheal, anti-inflammatory, hypocholesterolemic effects, and wound healing properties. However, more studies that aim to isolate the phytochemicals in cassava extracts and evaluate their pharmacological property are necessary to further validate their medical and nutritional values.
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Affiliation(s)
| | - Said Moshawih
- PAP Rashidah Sa’adatul Bolkiah Institute of Health Sciences, Universiti Brunei Darussalam, Gadong, Brunei Darussalam
| | - Andi Hermansyah
- Department of Pharmacy Practice, Faculty of Pharmacy, Universitas Airlangga, Surabaya, Indonesia
| | - Mohd Ikmal Asmuni
- Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - Naeem Shafqat
- PAP Rashidah Sa’adatul Bolkiah Institute of Health Sciences, Universiti Brunei Darussalam, Gadong, Brunei Darussalam
| | - Long Chiau Ming
- PAP Rashidah Sa’adatul Bolkiah Institute of Health Sciences, Universiti Brunei Darussalam, Gadong, Brunei Darussalam
- Department of Pharmacy Practice, Faculty of Pharmacy, Universitas Airlangga, Surabaya, Indonesia
- School of Medical and Life Sciences, Sunway University, Sunway City, Malaysia
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Liang J, Huang X, Ma G. Antimicrobial activities and mechanisms of extract and components of herbs in East Asia. RSC Adv 2022; 12:29197-29213. [PMID: 36320733 PMCID: PMC9554739 DOI: 10.1039/d2ra02389j] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 10/03/2022] [Indexed: 11/05/2022] Open
Abstract
Antibacterial drugs face increasing challenges due to drug resistance and adverse reactions, which has created a pressing need for the discovery and development of novel antibacterial drugs. Herbs have played an important role in the treatment of infectious diseases. This review aims to summarize, analyze and evaluate the antibacterial activities and mechanisms of components from popular herbs in East Asia. In this review, we have searched and summarized the scientific papers published during the past twenty-year period from electronic databases such as PubMed, ScienceDirect, and Web of Science. These herbs and their components, including alkaloids, flavonoids, essential oils, terpenes, organic acids, coumarins and lignans, display potential antimicrobial effects. Herbal medicine formulas (HMFs) usually show stronger antibacterial activity than single herbs. Herbs and HMFs bring forth antibacterial activities by damaging cell membranes and walls, inhibiting nucleic acid and protein synthesis, and increasing intracellular osmotic pressure. These herbs and their components can be developed as potential and promising novel antibacterial herbal products.
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Affiliation(s)
- Jingru Liang
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University 826 Zhangheng Road Shanghai 201203 China +86-21-5198-0025
| | - Xuan Huang
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University 826 Zhangheng Road Shanghai 201203 China +86-21-5198-0025
| | - Guo Ma
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University 826 Zhangheng Road Shanghai 201203 China +86-21-5198-0025
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Tammar S, Salem N, Aidi Wannes W, Limam H, Bourgou S, Fares N, Dakhlaoui S, Hammami M, Khammassi S, Re GD, Hessini K, Msaada K. Chemometric Profiling and Bioactivity of Verbena ( Aloysia citrodora) Methanolic Extract from Four Localities in Tunisia. Foods 2021; 10:2912. [PMID: 34945462 PMCID: PMC8700817 DOI: 10.3390/foods10122912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/13/2021] [Accepted: 11/22/2021] [Indexed: 11/16/2022] Open
Abstract
This research aimed to study the chemical composition of Aloysia citrodora methanolic extract and its biological activities as an antioxidant, and its antibacterial, antifungal and anti-inflammatory activities based on four bioclimatic collection stages. The contents of total phenols, total flavonoids and total tannins were determined. Nine phenolic compounds were identified by LC-DAD-ESI-MS/MS. The major compound was acteoside, a phenylpropanoid which represented about 80% of the methanolic fraction in the various regions. The antioxidant activities of different locations were measured by different analytical assays, such as DPPH, ABTS and iron reducing power. The results showed that phenolic compounds and antioxidant activities varied with climatic and environmental factors. Moreover, there was a significant dependency between regions and biological activities. The use of a principal component analysis showed that there was a close relationship among phenylpropanoids, phenolic compounds and the studied biological activities.
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Affiliation(s)
- Sonia Tammar
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Center in Borj-Cedria Technopol, BP. 901, Hammam-Lif 2050, Tunisia; (S.T.); (H.L.); (S.B.); (S.D.); (M.H.); (S.K.); (K.M.)
- Faculté des Sciences de Bizerte, Université de Carthage, Zarzouna, Bizerte 7021, Tunisia
| | - Nidhal Salem
- Laboratory of Bioactive Substances, Biotechnology Center in Borj-Cedria Technopol, BP. 901, Hammam-Lif 2050, Tunisia; (N.S.); (N.F.)
| | - Wissem Aidi Wannes
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Center in Borj-Cedria Technopol, BP. 901, Hammam-Lif 2050, Tunisia; (S.T.); (H.L.); (S.B.); (S.D.); (M.H.); (S.K.); (K.M.)
| | - Hajer Limam
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Center in Borj-Cedria Technopol, BP. 901, Hammam-Lif 2050, Tunisia; (S.T.); (H.L.); (S.B.); (S.D.); (M.H.); (S.K.); (K.M.)
- College of Sciences of Tunis, Tunis El Manar University, Tunis 2092, Tunisia
| | - Soumaya Bourgou
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Center in Borj-Cedria Technopol, BP. 901, Hammam-Lif 2050, Tunisia; (S.T.); (H.L.); (S.B.); (S.D.); (M.H.); (S.K.); (K.M.)
| | - Nedia Fares
- Laboratory of Bioactive Substances, Biotechnology Center in Borj-Cedria Technopol, BP. 901, Hammam-Lif 2050, Tunisia; (N.S.); (N.F.)
| | - Sarra Dakhlaoui
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Center in Borj-Cedria Technopol, BP. 901, Hammam-Lif 2050, Tunisia; (S.T.); (H.L.); (S.B.); (S.D.); (M.H.); (S.K.); (K.M.)
| | - Majdi Hammami
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Center in Borj-Cedria Technopol, BP. 901, Hammam-Lif 2050, Tunisia; (S.T.); (H.L.); (S.B.); (S.D.); (M.H.); (S.K.); (K.M.)
| | - Saber Khammassi
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Center in Borj-Cedria Technopol, BP. 901, Hammam-Lif 2050, Tunisia; (S.T.); (H.L.); (S.B.); (S.D.); (M.H.); (S.K.); (K.M.)
| | - Giovanni Del Re
- Dipartimento di Ingegneria Industriale e dell’ Informazione e di Economia, Università dell’Aquila, Piazzale Ernesto Pontieri, Monteluco di Roio, 67100 L’Aquila, Italy;
| | - Kamel Hessini
- Department of Biology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Kamel Msaada
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Center in Borj-Cedria Technopol, BP. 901, Hammam-Lif 2050, Tunisia; (S.T.); (H.L.); (S.B.); (S.D.); (M.H.); (S.K.); (K.M.)
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11
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Godzieba M, Ciesielski S. Natural DNA Intercalators as Promising Therapeutics for Cancer and Infectious Diseases. Curr Cancer Drug Targets 2021; 20:19-32. [PMID: 31589125 DOI: 10.2174/1568009619666191007112516] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/11/2019] [Accepted: 06/24/2019] [Indexed: 02/08/2023]
Abstract
Cancer and infectious diseases are one of the greatest challenges of modern medicine. An unhealthy lifestyle, the improper use of drugs, or their abuse are conducive to the increase of morbidity and mortality caused by these diseases. The imperfections of drugs currently used in therapy for these diseases and the increasing problem of drug resistance have forced a search for new substances with therapeutic potential. Throughout history, plants, animals, fungi and microorganisms have been rich sources of biologically active compounds. Even today, despite the development of chemistry and the introduction of many synthetic chemotherapeutics, a substantial part of the new compounds being tested for treatment are still of natural origin. Natural compounds exhibit a great diversity of chemical structures, and thus possess diverse mechanisms of action and molecular targets. Nucleic acids seem to be a good molecular target for substances with anticancer potential in particular, but they may also be a target for antimicrobial compounds. There are many types of interactions of small-molecule ligands with DNA. This publication focuses on the intercalation process. Intercalators are compounds that usually have planar aromatic moieties and can insert themselves between adjacent base pairs in the DNA helix. These types of interactions change the structure of DNA, leading to various types of disorders in the functioning of cells and the cell cycle. This article presents the most promising intercalators of natural origin, which have aroused interest in recent years due to their therapeutic potential.
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Affiliation(s)
- Martyna Godzieba
- Department of Environmental Biotechnology, Faculty of Environmental Sciences, University of Warmia and Mazury in Olsztyn, ul. Sloneczna 45 G, 10-917 Olsztyn, Poland
| | - Slawomir Ciesielski
- Department of Environmental Biotechnology, Faculty of Environmental Sciences, University of Warmia and Mazury in Olsztyn, ul. Sloneczna 45 G, 10-917 Olsztyn, Poland
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12
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Francolini I, Piozzi A. Role of Antioxidant Molecules and Polymers in Prevention of Bacterial Growth and Biofilm Formation. Curr Med Chem 2020; 27:4882-4904. [DOI: 10.2174/0929867326666190409120409] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/27/2019] [Accepted: 04/04/2019] [Indexed: 01/22/2023]
Abstract
Background:
Antioxidants are multifaceted molecules playing a crucial role in several
cellular functions. There is by now a well-established knowledge about their involvement in numerous
processes associated with aging, including vascular damage, neurodegenerative diseases and
cancer. An emerging area of application has been lately identified for these compounds in relation to
the recent findings indicating their ability to affect biofilm formation by some microbial pathogens,
including Staphylococcus aureus, Streptococcus mutans, and Pseudomonas aeruginosa.
Methods:
A structured search of bibliographic databases for peer-reviewed research literature was
performed using a focused review question. The quality of retrieved papers was appraised using
standard tools.
Results:
One hundred sixty-five papers extracted from pubmed database and published in the last
fifteen years were included in this review focused on the assessment of the antimicrobial and antibiofilm
activity of antioxidant compounds, including vitamins, flavonoids, non-flavonoid polyphenols,
and antioxidant polymers. Mechanisms of action of some important antioxidant compounds,
especially for vitamin C and phenolic acids, were identified.
Conclusion:
The findings of this review confirm the potential benefits of the use of natural antioxidants
as antimicrobial/antibiofilm compounds. Generally, gram-positive bacteria were found to be
more sensitive to antioxidants than gram-negatives. Antioxidant polymeric systems have also been
developed mainly derived from functionalization of polysaccharides with antioxidant molecules.
The application of such systems in clinics may permit to overcome some issues related to the systemic
delivery of antioxidants, such as poor absorption, loss of bioactivity, and limited half-life.
However, investigations focused on the study of antibiofilm activity of antioxidant polymers are still
very limited in number and therefore they are strongly encouraged in order to lay the foundations for
application of antioxidant polymers in treatment of biofilm-based infections.
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Affiliation(s)
- Iolanda Francolini
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro, 5 - 00185, Rome, Italy
| | - Antonella Piozzi
- Department of Chemistry, Sapienza University of Rome, P.le A. Moro, 5 - 00185, Rome, Italy
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Fuzi M, Rodriguez Baño J, Toth A. Global Evolution of Pathogenic Bacteria With Extensive Use of Fluoroquinolone Agents. Front Microbiol 2020; 11:271. [PMID: 32158437 PMCID: PMC7052298 DOI: 10.3389/fmicb.2020.00271] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 02/06/2020] [Indexed: 12/11/2022] Open
Abstract
It is well-established that the spread of many multidrug-resistant (MDR) bacteria is predominantly clonal. Interestingly the international clones/sequence types (STs) of most pathogens emerged and disseminated during the last three decades. Strong experimental evidence from multiple laboratories indicate that diverse fitness cost associated with high-level resistance to fluoroquinolones contributed to the selection and promotion of the international clones/STs of hospital-associated methicillin-resistant Staphylococcus aureus (HA-MRSA), extended-spectrum β-lactamase-(ESBL)-producing Klebsiella pneumoniae, ESBL-producing Escherichia coli and Clostridioides difficile. The overwhelming part of the literature investigating the epidemiology of the pathogens as a function of fluoroquinolone use remain in concordence with these findings. Moreover, recent in vitro data clearly show the potential of fluoroquinolone exposure to shape the clonal evolution of Salmonella Enteritidis. The success of the international clones/STs in all these species was linked to the strains' unique ability to evolve multiple energetically beneficial gyrase and topoisomerase IV mutations conferring high-level resistance to fluorquinolones and concomittantly permitting the acquisition of an extra resistance gene load without evoking appreciable fitness cost. Furthermore, by analyzing the clonality of multiple species, the review highlights, that in environments under high antibiotic exposure virulence factors play only a subsidiary role in the clonal dynamics of bacteria relative to multidrug-resistance coupled with favorable fitness (greater speed of replication). Though other groups of antibiotics should also be involved in selecting clones of bacterial pathogens the role of fluoroquinolones due to their peculiar fitness effect remains unique. It is suggested that probably no bacteria remain immune to the influence of fluoroquinolones in shaping their evolutionary dynamics. Consequently a more judicious use of fluoroquinolones, attuned to the proportion of international clone/ST isolates among local pathogens, would not only decrease resistance rates against this group of antibiotics but should also ameliorate the overall antibiotic resistance landscape.
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Affiliation(s)
- Miklos Fuzi
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Jesus Rodriguez Baño
- Unit of Infectious Diseases, Clinical Microbiology and Preventive Medicine, Department of Medicine, Hospital Universitario Virgen Macarena, University of Seville - Biomedicine Institute of Seville (IBiS), Seville, Spain
| | - Akos Toth
- Department of Bacteriology, Mycology and Parasitology, National Public Health Center, Budapest, Hungary
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14
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The Interaction of Flavonols with Membrane Components: Potential Effect on Antioxidant Activity. J Membr Biol 2020; 253:57-71. [DOI: 10.1007/s00232-019-00105-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 12/14/2019] [Indexed: 11/25/2022]
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15
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Adamczak A, Ożarowski M, Karpiński TM. Antibacterial Activity of Some Flavonoids and Organic Acids Widely Distributed in Plants. J Clin Med 2019; 9:E109. [PMID: 31906141 PMCID: PMC7019947 DOI: 10.3390/jcm9010109] [Citation(s) in RCA: 209] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 12/24/2019] [Accepted: 12/27/2019] [Indexed: 01/03/2023] Open
Abstract
Among natural substances widespread in fruits, vegetables, spices, and medicinal plants, flavonoids and organic acids belong to the promising groups of bioactive compounds with strong antioxidant and anti-inflammatory properties. The aim of the present work was to evaluate the antibacterial activity of 13 common flavonoids (flavones, flavonols, flavanones) and 6 organic acids (aliphatic and aromatic acids). The minimal inhibitory concentrations (MICs) of selected plant substances were determined by the micro-dilution method using clinical strains of four species of pathogenic bacteria. All tested compounds showed antimicrobial properties, but their biological activity was moderate or relatively low. Bacterial growth was most strongly inhibited by salicylic acid (MIC = 250-500 μg/mL). These compounds were generally more active against Gram-negative bacteria: Escherichia coli and Pseudomonas aeruginosa than Gram-positive ones: Enterococcus faecalis and Staphylococcus aureus. An analysis of the antibacterial effect of flavone, chrysin, apigenin, and luteolin showed that the presence of hydroxyl groups in the phenyl rings A and B usually did not influence on the level of their activity. A significant increase in the activity of the hydroxy derivatives of flavone was observed only for S. aureus. Similarly, the presence and position of the sugar group in the flavone glycosides generally had no effect on the MIC values.
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Affiliation(s)
- Artur Adamczak
- Department of Botany, Breeding and Agricultural Technology of Medicinal Plants, Institute of Natural Fibres and Medicinal Plants, Kolejowa 2, 62-064 Plewiska, Poland;
| | - Marcin Ożarowski
- Department of Biotechnology, Institute of Natural Fibres and Medicinal Plants, Wojska Polskiego 71b, 60-630 Poznań, Poland;
| | - Tomasz M. Karpiński
- Department of Medical Microbiology, Poznań University of Medical Sciences, Wieniawskiego 3, 61-712 Poznań, Poland
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16
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Wang X, Elshahawi SI, Ponomareva LV, Ye Q, Liu Y, Copley GC, Hower JC, Hatcher BE, Kharel MK, Van Lanen SG, She QB, Voss SR, Thorson JS, Shaaban KA. Structure Determination, Functional Characterization, and Biosynthetic Implications of Nybomycin Metabolites from a Mining Reclamation Site-Associated Streptomyces. JOURNAL OF NATURAL PRODUCTS 2019; 82:3469-3476. [PMID: 31833370 PMCID: PMC7084111 DOI: 10.1021/acs.jnatprod.9b01015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
We report the isolation and characterization of three new nybomycins (nybomycins B-D, 1-3) and six known compounds (nybomycin, 4; deoxynyboquinone, 5; α-rubromycin, 6; β-rubromycin, 7; γ-rubromycin, 8; and [2α(1E,3E),4β]-2-(1,3-pentadienyl)-4-piperidinol, 9) from the Rock Creek (McCreary County, KY) underground coal mine acid reclamation site isolate Streptomyces sp. AD-3-6. Nybomycin D (3) and deoxynyboquinone (5) displayed moderate (3) to potent (5) cancer cell line cytotoxicity and displayed weak to moderate anti-Gram-(+) bacterial activity, whereas rubromycins 6-8 displayed little to no cancer cell line cytotoxicity but moderate to potent anti-Gram-(+) bacterial and antifungal activity. Assessment of the impact of 3 or 5 cancer cell line treatment on 4E-BP1 phosphorylation, a predictive marker of ROS-mediated control of cap-dependent translation, also revealed deoxynyboquinone (5)-mediated downstream inhibition of 4E-BP1p. Evaluation of 1-9 in a recently established axolotl embryo tail regeneration assay also highlighted the prototypical telomerase inhibitor γ-rubromycin (8) as a new inhibitor of tail regeneration. Cumulatively, this work highlights an alternative nybomycin production strain, a small set of new nybomycin metabolites, and previously unknown functions of rubromycins (antifungal activity and inhibition of tail regeneration) and also provides a basis for revision of the previously proposed nybomycin biosynthetic pathway.
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Affiliation(s)
- Xiachang Wang
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Sherif I. Elshahawi
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Irvine, California 92618, United States
| | - Larissa V. Ponomareva
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Qing Ye
- Markey Cancer Center, Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Yang Liu
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Gregory C. Copley
- Center for Applied Energy Research, University of Kentucky, Lexington, Kentucky 40511, United States
| | - James C. Hower
- Center for Applied Energy Research, University of Kentucky, Lexington, Kentucky 40511, United States
| | - Bruce E. Hatcher
- Division of Water, Kentucky Energy and Environment Cabinet, 2642 Russellville Road, Bowling Green, Kentucky 42101, United States
| | - Madan K. Kharel
- School of Pharmacy, University of Maryland Eastern Shore, Princess Anne, Maryland 21853, United States
| | - Steven G. Van Lanen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Qing-Bai She
- Markey Cancer Center, Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, Kentucky 40536, United States
| | - S. Randal Voss
- Department of Neuroscience, University of Kentucky, Lexington, Kentucky 40536, United States
- Ambystoma Genetic Stock Center, University of Kentucky, Lexington, Kentucky 40536, United States
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Jon S. Thorson
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Khaled A. Shaaban
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
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17
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A Review on Flavonoid Apigenin: Dietary Intake, ADME, Antimicrobial Effects, and Interactions with Human Gut Microbiota. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7010467. [PMID: 31737673 PMCID: PMC6817918 DOI: 10.1155/2019/7010467] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 06/25/2019] [Accepted: 07/31/2019] [Indexed: 12/31/2022]
Abstract
Apigenin is a flavonoid of low toxicity and multiple beneficial bioactivities. Published reviews all focused on the findings using eukaryotic cells, animal models, or epidemiological studies covering the pharmacokinetics, cancer chemoprevention, and drug interactions of apigenin; however, no review is available on the antimicrobial effects of apigenin. Research proves that dietary apigenin passes through the upper gastrointestinal tract and reaches the colon after consumption. For that reason, it is worthwhile to study the potential interactions between apigenin and human gut microbiota. This review summarizes studies on antimicrobial effects of apigenin as well as what has been reported on apigenin and human gut microbiota. Various levels of effectiveness have been reported on apigenin's antibacterial, antifungal, and antiparasitic capability. It has been shown that apigenin or its glycosides are degraded into smaller metabolites by certain gut bacteria which can regulate the human body after absorption. How apigenin contributes to the structural and functional changes in human gut microbiota as well as the bioactivities of apigenin bacterial metabolites are worth further investigation.
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18
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Discovery of novel oxoindolin derivatives as atypical dual inhibitors for DNA Gyrase and FabH. Bioorg Chem 2019; 93:103309. [PMID: 31585266 DOI: 10.1016/j.bioorg.2019.103309] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/20/2019] [Accepted: 09/19/2019] [Indexed: 12/24/2022]
Abstract
The antibacterial agents and therapies today are facing serious problems such as drug resistance. Introducing dual inhibiting effect is a valid approach to solve this trouble and bring advantages including wide adaptability, favorable safety and superiority of combination. We started from potential DNA Gyrase inhibitory backbone isatin to develop oxoindolin derivatives as atypical dual Gyrase (major) and FabH (assistant) inhibitors via a two-round screening. Aiming at blocking both duplication (Gyrase) and survival (FabH), most of synthesized compounds indicated potency against Gyrase and some of them inferred favorable inhibitory effect on FabH. The top hit I18 suggested comparable Gyrase inhibitory activity (IC50 = 0.025 μM) and antibacterial effect with the positive control Novobiocin (IC50 = 0.040 μM). FabH inhibitory activity (IC50 = 5.20 μM) was also successfully introduced. Docking simulation hinted possible important interacted residues and binding patterns for both target proteins. Adequate Structure-Activity Relation discussions provide the future orientations of modification. With high potency, low initial toxicity and dual inhibiting strategy, advanced compounds with therapeutic methods will be developed for clinical application.
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19
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Bridi R, Atala E, Pizarro PN, Montenegro G. Honeybee Pollen Load: Phenolic Composition and Antimicrobial Activity and Antioxidant Capacity. JOURNAL OF NATURAL PRODUCTS 2019; 82:559-565. [PMID: 30839214 DOI: 10.1021/acs.jnatprod.8b00945] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Honeybee pollen loads result from the agglutination of pollen grains and salivary secretions of bees. The potential use of honeybee pollen as a food supplement greatly depends on its chemical composition, which varies depending on the botanical and geographical origin of the pollen grains. This study aimed to characterize the botanical origin, chemical composition, and antioxidant and antibacterial activities of honeybee pollen from the V Region of Chile. The introduced species Brassica rapa and Eschscholzia californica predominated in the bee pollen analyzed. The honeybee pollen extracts showed antioxidant and antibacterial properties, specifically against the pathogenic microorganism Streptococcus pyogenes. Quercetin and myricetin were found in all samples in large concentrations. The separation of pollen loads from a multifloral sample demonstrated that E. californica pollen loads are responsible for antibacterial activity. This sample also showed a high concentration of quercetin (304.8 mg/100 g of bee pollen). Based on the present results, honeybee pollen from the V Region of Chile has been found to exhibit antioxidant and antimicrobial activities. Furthermore, it is proposed to use quercetin as a quality indicator for honeybee pollen from this region of Chile. These results should help establish better quality control criteria for Chilean honeybee pollen and its potential use as a functional ingredient.
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Affiliation(s)
- Raquel Bridi
- Departamento de Farmacia, Facultad de Química y de Farmacia , Pontificia Universidad Católica de Chile , Avenida Vicuña Mackenna 4860 , Macul, Santiago 7810000 , Chile
| | - Elias Atala
- Departamento de Farmacia, Facultad de Química y de Farmacia , Pontificia Universidad Católica de Chile , Avenida Vicuña Mackenna 4860 , Macul, Santiago 7810000 , Chile
| | - Paula Núñez Pizarro
- Departamento de Farmacia, Facultad de Química y de Farmacia , Pontificia Universidad Católica de Chile , Avenida Vicuña Mackenna 4860 , Macul, Santiago 7810000 , Chile
| | - Gloria Montenegro
- Departamento de Ciencias Vegetales, Facultad de Agronomía e Ingeniería Forestal , Pontificia Universidad Católica de Chile , Avenida Vicuña Mackenna 4860 , Santiago 7810000 , Chile
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20
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Kitamura M, Kimura K, Ido A, Seki T, Banno H, Jin W, Wachino JI, Yamada K, Arakawa Y. Relatively high rates of cefotaxime- and ceftriaxone-non-susceptible isolates among group B streptococci with reduced penicillin susceptibility (PRGBS) in Japan. J Antimicrob Chemother 2019; 74:931-934. [DOI: 10.1093/jac/dky542] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/07/2018] [Accepted: 11/27/2018] [Indexed: 11/13/2022] Open
Affiliation(s)
- Masaki Kitamura
- Department of Bacteriology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Kouji Kimura
- Department of Bacteriology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Ayaka Ido
- Department of Bacteriology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Tomomi Seki
- Department of Bacteriology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Hirotsugu Banno
- Department of Bacteriology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Wanchun Jin
- Department of Bacteriology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Jun-ichi Wachino
- Department of Bacteriology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Keiko Yamada
- Department of Bacteriology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
| | - Yoshichika Arakawa
- Department of Bacteriology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Japan
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21
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Alshehri SM, Shakeel F, Ibrahim MA, Elzayat EM, Altamimi M, Mohsin K, Almeanazel OT, Alkholief M, Alshetaili A, Alsulays B, Alanazi FK, Alsarra IA. Dissolution and bioavailability improvement of bioactive apigenin using solid dispersions prepared by different techniques. Saudi Pharm J 2018; 27:264-273. [PMID: 30766439 PMCID: PMC6362180 DOI: 10.1016/j.jsps.2018.11.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 11/13/2018] [Indexed: 10/31/2022] Open
Abstract
Apigenin (APG) is a poorly soluble bioactive compound/nutraceutical which shows poor bioavailability upon oral administration. Hence, the objective of this research work was to develop APG solid dispersions (SDs) using different techniques with the expectation to obtain improvement in its in vitro dissolution rate and in vivo bioavailability upon oral administration. Different SDs of APG were prepared by microwave, melted and kneaded technology using pluronic-F127 (PL) as a carrier. Prepared SDs were characterized using "thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Fourier transform infra-red (FTIR) spectrometer, powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM)". After characterization, prepared SDs of APG were studied for in vitro drug release/dissolution profile and in vivo pharmacokinetic studies. The results of TGA, DSC, FTIR, PXRD and SEM indicated successful formation of APG SDs. In vitro dissolution experiments suggested significant release of APG from all SDs (67.39-84.13%) in comparison with control (32.74%). Optimized SD of APG from each technology was subjected to in vivo pharmacokinetic study in rats. The results indicated significant improvement in oral absorption of APG from SD prepared using microwave and melted technology in comparison with pure drug and commercial capsule. The enhancement in oral bioavailability of APG from microwave SD (319.19%) was 3.19 fold as compared with marketed capsule (100.00%). Significant enhancement in the dissolution rate and oral absorption of APG from SD suggested that developed SD systems can be successfully used for oral drug delivery system of APG.
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Affiliation(s)
- Sultan M Alshehri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Faiyaz Shakeel
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mohamed A Ibrahim
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ehab M Elzayat
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Mohammad Altamimi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Kazi Mohsin
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Osaid T Almeanazel
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Musaed Alkholief
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Abdullah Alshetaili
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Bader Alsulays
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Fars K Alanazi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ibrahim A Alsarra
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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23
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Fuzi M, Szabo D, Csercsik R. Double-Serine Fluoroquinolone Resistance Mutations Advance Major International Clones and Lineages of Various Multi-Drug Resistant Bacteria. Front Microbiol 2017; 8:2261. [PMID: 29250038 PMCID: PMC5715326 DOI: 10.3389/fmicb.2017.02261] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 11/02/2017] [Indexed: 01/06/2023] Open
Abstract
The major international sequence types/lineages of methicillin-resistant Staphylococcus aureus (MRSA), extended-spectrum β-lactamase (ESBL)-producing Klebsiella pneumoniae and ESBL-producing E. coli were demonstrated to have been advanced by favorable fitness balance associated with high-level resistance to fluoroquinolones. The paper shows that favorable fitness in the major STs/lineages of these pathogens was principally attained by the capacity of evolving mutations in the fluoroquinolone-binding serine residues of both the DNA gyrase and topoisomerase IV enzymes. The available information on fitness balance incurred by individual and various combinations of mutations in the enzymes is reviewed in multiple species. Moreover, strong circumstantial evidence is presented that major STs/lineages of other multi-drug resistant bacteria, primarily vancomycin-resistant Enterococcus faecium (VRE), emerged by a similar mechanism. The reason(s) why the major ST/lineage strains of various pathogens proved more adept at evolving favorable mutations than most isolates of the same species remains to be elucidated.
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Affiliation(s)
- Miklos Fuzi
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Dora Szabo
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Rita Csercsik
- Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
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24
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Karamese M, Erol HS, Albayrak M, Findik Guvendi G, Aydin E, Aksak Karamese S. Anti-oxidant and anti-inflammatory effects of apigenin in a rat model of sepsis: an immunological, biochemical, and histopathological study. Immunopharmacol Immunotoxicol 2017; 38:228-37. [PMID: 27144896 DOI: 10.3109/08923973.2016.1173058] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
OBJECTIVE We hypothesize that apigenin may inhibit some cellular process of sepsis-induced spleen injury and simultaneously improve inflammation and oxidative stress. Therefore, the aim of this study was to investigate the potential protective effects of apigenin in a polymicrobial sepsis rat model of by cecal ligation and puncture. MATERIALS AND METHODS 64 female Wistar albino rats were divided into 8 groups. The pro-inflammatory (tumor necrosis factor-alpha, interleukin-6, and interleukin-1-beta) and anti-inflammatory (tumor growth factor-beta and interleukin-10) cytokine levels were measured by enzyme-linked immunosorbent assay. CD3, CD68, and nuclear factor kappa B (NF-κB) positivity rates were detected by immunohistochemical methods. Oxidative stress parameters were measured by tissue biochemistry. RESULTS Sepsis caused a significant increase in TNF-alpha, IL-1-beta, IL-6, and TGF-beta levels whereas it reduced IL-10 level. Additionally, it led to an increase in CD3, CD68, and NF-κB positivity rates as well as oxidative stress parameters levels. However, apigenin inhibited the inflammation process, increased the IL-10 level and normalized the oxidative stress parameters. DISCUSSION AND CONCLUSION Pretreatment with apigenin results in a significant reduction in the amount of inflammatory cells. The beneficial effect of apigenin on spleen injury also involved inhibition of NF-κB pathway, suppression of proinflammatory cytokines, and induction of anti-inflammatory cytokine production. Additionally, it led to a decrease in oxidative stress in spleen tissue. Taking everything into account, apigenin may be an alternative therapeutic option for prevention of sepsis-induced organ.
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Affiliation(s)
- Murat Karamese
- a Department of Microbiology, Faculty of Medicine , Kafkas University , Kars , Turkey
| | - Huseyin Serkan Erol
- b Department of Biochemistry, Faculty of Veterinary Medicine , Ataturk University , Erzurum , Turkey
| | - Mevlut Albayrak
- c Department of Pathology, Faculty of Medicine , Ataturk University , Erzurum , Turkey
| | | | - Emsal Aydin
- e Department of Infectious Diseases and Clinical Microbiology, Faculty of Medicine , Kafkas University , Kars , Turkey
| | - Selina Aksak Karamese
- f Department of Histology and Embryology, Faculty of Medicine , Kafkas University , Kars , Turkey
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Abstract
DNA gyrase and topoisomerase IV are type IIA bacterial topoisomerases that are targeted by highly effective antibiotics. However, resistance via multiple mechanisms arises to limit the efficacies of these drugs. Continued research on type IIA bacterial topoisomerases has provided novel approaches to counter the most common resistance mechanism for utilization of these proven targets in antibacterial therapy. Bacterial topoisomerase I is being explored as an alternative target that is not expected to show cross-resistance. Dual targeting or combination therapy could be strategies for circumventing the development of resistance to topoisomerase-targeting antibiotics. Bacterial topoisomerases are high-value bactericidal targets that could continue to be exploited for antibacterial therapy, if new tactics to counter resistance can be adopted.
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