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Donadio G, Chini MG, Parisi V, Mensitieri F, Malafronte N, Bifulco G, Bisio A, De Tommasi N, Bader A. Diterpenoid Constituents of Psiadia punctulata and Evaluation of Their Antimicrobial Activity. JOURNAL OF NATURAL PRODUCTS 2022; 85:1667-1680. [PMID: 35748331 PMCID: PMC9315948 DOI: 10.1021/acs.jnatprod.1c01093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Sixteen diterpenes (1-16), along with 10 previously described compounds, including four flavonoids and six diterpenes, were isolated from the aerial parts of Psiadia punctulata growing in Saudi Arabia. The diterpene structures were elucidated using NMR spectroscopy and mass spectrometry data. Furthermore, a DFT/NMR procedure was used to suggest the relative configuration of several compounds. The labdane-derived skeletons, namely, ent-atisane, ent-beyerene, ent-trachylobane, and ent-kaurene, were identified. The extracts, fractions, and pure compounds were then tested against Staphylococcus aureus, Streptococcus mutans, Treponema denticola, and Lactobacillus plantarum. One diterpenoid, namely, psiadin, showed an additive effect with the antiseptic chlorhexidine, with a fractional inhibitory concentration index of less than 1. Additionally, psiadin showed a prospective inhibition activity for bacterial efflux pumps.
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Affiliation(s)
- Giuliana Donadio
- Department
of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Maria Giovanna Chini
- Department
of Biosciences and Territory, University
of Molise, Contrada Fonte Lappone, I-86090, Pesche, Isernia, Italy
| | - Valentina Parisi
- Department
of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
- Ph.D.
Program in Drug Discovery and Development, Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Francesca Mensitieri
- Department
of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Via Salvador Allende, 84081, Baronissi, Italy
| | - Nicola Malafronte
- Department
of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Giuseppe Bifulco
- Department
of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Angela Bisio
- Department
of Pharmacy, University of Genova, Viale Cembrano 4, 16148, Genova, Italy
| | - Nunziatina De Tommasi
- Department
of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084, Fisciano, Salerno, Italy
| | - Ammar Bader
- Department
of Pharmacognosy, Umm Al-Qura University, 21955 Makkah, Saudi Arabia
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The invasive Opuntia ficus-indica homogenizes native plant species compositions in the highlands of Eritrea. Biol Invasions 2020. [DOI: 10.1007/s10530-020-02373-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
AbstractInvasion by exotic species is recognized as one of the major threats to biodiversity. The effects of invasion by Opuntia ficus-indica (Cactaceae) on the species diversity, richness and composition of invaded communities were studied at three sites in the highlands of Eritrea, East Africa. This paper investigates whether the presence of O. ficus-indica causes a negative effect on the native biodiversity in a region rarely studied so far. The vegetation in invaded and uninvaded plots with similar habitat conditions was sampled and differences in the species composition, diversity and richness were compared between the plots. The overall plant species composition differed significantly with invasion by O. ficus-indica. The invasion by O. ficus-indica also led to a significant homogenization of community compositions. The species richness and Shannon diversity index did not differ significantly between the invaded and uninvaded plots. Nevertheless, we still detected species with significantly lower occurrence in the invaded plots (Psiadia punctulata), but also species which preferred invaded plots (Plectranthus hadiensis). We conclude that O. ficus-indica exerts a negligible effect on the species diversity and richness but that it affects species composition and that there are species which suffer due to its presence. Due to the continuous pressure of the invasion by O. ficus-indica on the species composition and dry climates, further homogenization in the native species diversity is to be expected in the future for the highlands of Eritrea.
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Abdallah HM, Hassan NA, El-Halawany AM, Mohamed GA, Safo MK, El-Bassossy HM. Major flavonoids from Psiadia punctulata produce vasodilation via activation of endothelial dependent NO signaling. J Adv Res 2020; 24:273-279. [PMID: 32382447 PMCID: PMC7200196 DOI: 10.1016/j.jare.2020.01.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 01/01/2020] [Accepted: 01/02/2020] [Indexed: 12/11/2022] Open
Abstract
Methanol extract of Psiadia punctulata (MAPP) produced a significant vasodilation. Chloroform fraction and its methylated flavonoids were responsible for this effect. Vasodilation is referred to endothelial nitric oxide and, Ca2+ dependent eNOS. Interference with calcium entrance is another possible mechanism of vasodilation.
Vasodilators are important pharmacologic agents for managing and/or treating hypertension. Medicinal plants are considered as valuable source of bioactive compounds. We used a bioguided approach to isolate, identify, and investigate the possible vasodilation activities and mechanism(s) of the prepared methanol extract from aerial parts of Psiadia punctulata (MAPP), its bioactive fraction and active compounds. Vascular effects of MAPP were studied using isolated artery technique in the presence or absence of specific candidate pathways inhibitors, and found to produce a significant vasodilation of phenylephrine preconstricted rat aortae. The bioactive chloroform fraction yielded five methoxylated flavonoids: umuhengerin (1), gardenin A (2), gardenin B (3), luteolin-3′,4′ -dimethyl ether (4), and 5,3′-dihydroxy-6,7,4′,5′-tetramethoxyflavone (5). Metabolites 1, 4, and 5 produced a significant vasodilation. Removal of the endothelium significantly inhibited MAPP vasodilation. Nitric oxide synthase inhibition and not prostacycline inhibition or K+ channel blocking, was found to cause the observed vasodilation inhibition. Both guanylate cyclase and adenylate cyclase inhibitions markedly inhibited MAPP vasodilation. In conclusion MAPP possesses vasodilation activities that is mediated through endothelial nitric oxide pathway, calcium dependent endothelial nitric oxide synthase activation, and interference with the depolarization process through calcium channel blocking activity.
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Key Words
- AC, adenylate cyclase
- Ca2+, calcium
- CaM, calmodulin
- CaMKII, Ca2+/calmodulin-dependent protein kinase II
- Endothelial nitric oxide
- Flavonoids
- GTP, guanosine triphosphate
- Hypertension
- L-NAME, Nω-nitro-L-arginine methyl ester
- MAPP, methanol extract from aerial parts of Psiadia punctulata
- MDL, cis-N-(2-Phenylcyclopentyl)azacyclotridec-1-en-2-amine.HCl (MDL-12, 330A)
- NO, nitric oxide
- NOS, nitric oxide synthase
- ODQ, 1H-(1,2,4)-oxadiazolo(4,3-a)quinoxalin-1-one
- PE, phenylephrine
- PI3K, phosphoinositide 3-kinase
- PKG, protein kinase G
- PP, Psiadia punctulata
- Psiadia punctulata
- TEA, tetraethylammonium chloride
- VSMCs, vascular smooth muscle cells
- Vasodilator
- cGMP, cyclic guanosine monophosphate
- eNOS, endothelial nitric oxide synthase
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Affiliation(s)
- Hossam M Abdallah
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia.,Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Noura A Hassan
- Department of Pharmacology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Ali M El-Halawany
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Gamal A Mohamed
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia.,Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Assuit Branch, Assuit 71524, Egypt
| | - Martin K Safo
- Department of Medicinal Chemistry, Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, VA 23219, USA
| | - Hany M El-Bassossy
- Department of Pharmacology, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
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Dal Piaz F, Bader A, Malafronte N, D'Ambola M, Petrone AM, Porta A, Ben Hadda T, De Tommasi N, Bisio A, Severino L. Phytochemistry of compounds isolated from the leaf-surface extract of Psiadia punctulata (DC.) Vatke growing in Saudi Arabia. PHYTOCHEMISTRY 2018; 155:191-202. [PMID: 30149245 DOI: 10.1016/j.phytochem.2018.08.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 07/27/2018] [Accepted: 08/12/2018] [Indexed: 05/22/2023]
Abstract
The surface extract of an accession of Psiadia punctulata (DC.) Vatke (Asteraceae) growing in Saudi Arabia was investigated for its phytochemical composition. A bio-guided investigation of the extract led to the isolation of thirteen ent-kaurane and trachylobane diterpenes and seventeen compounds previously described, including nine flavonoids and eight diterpenes. Three flavonoids and one ent-kaurane diterpene showed antimicrobial activity with MIC100 values ranging from 25 to 150 μg/ml. The extract showed antibacterial activity against Staphylococcus aureus (MIC100 = 180 μg/ml) and antifungal activity against Candida albicans (MIC0 = 130 μg/ml). The isolated 3',4',5,7-tetramethoxyflavone, at a concentration of 40 μg/ml, displayed the ability to reduce biofilm formation of S. aureus and C. albicans by 50% and 90% respectively.
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Affiliation(s)
- Fabrizio Dal Piaz
- Department of Pharmacy, University of Salerno, Fisciano, Via Giovanni Paolo II, SA, Italy
| | - Ammar Bader
- Department of Pharmacognosy, Umm Al-Qura University, 21955, Makkah, Saudi Arabia
| | - Nicola Malafronte
- Department of Pharmacy, University of Salerno, Fisciano, Via Giovanni Paolo II, SA, Italy
| | - Massimiliano D'Ambola
- Department of Pharmacy, University of Salerno, Fisciano, Via Giovanni Paolo II, SA, Italy
| | - Anna Maria Petrone
- Department of Pharmacy, University of Salerno, Fisciano, Via Giovanni Paolo II, SA, Italy; PhD Program in Drug Discovery and Development, University of Salerno, Fisciano, SA, Italy
| | - Amalia Porta
- Department of Pharmacy, University of Salerno, Fisciano, Via Giovanni Paolo II, SA, Italy
| | - Taibi Ben Hadda
- LCM Laboratory, University of Mohammed Premier, Oujda, 60000, Morocco
| | - Nunziatina De Tommasi
- Department of Pharmacy, University of Salerno, Fisciano, Via Giovanni Paolo II, SA, Italy.
| | - Angela Bisio
- Department of Pharmacy, University of Genova, Viale Cembrano 4, 16148, Genova, Italy.
| | - Lorella Severino
- Department of Veterinary Medicine and Animal Production, University of Napoli Federico II, Via Delpino 1, 80137, Napoli, Italy
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Soares ACF, Cabral MMW, Martins CHG, Ferreira AE, Bergamo PAS, Omosa LK, Midiwo JO, Parreira RLT, Heleno VCG. Study of Anti-Tuberculosis Activity Behaviour of Natural Kaurane and Trachylobane Diterpenes Compared with Structural Properties Obtained by Theoretical Calculations. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A set of seven diterpenes, three kauranes and four trachylobanes, isolated from the African plant Psiadia punctulata were assayed against Mycobacterium tuberculosis and reached activity comparable with cycloserine, a second line drug used to treat tuberculosis (TB). Several structural properties of those diterpenes, such as lipophilicity, HOMO and LUMO energies, charge density, and intramolecular hydrogen bond (IHB) formation, were obtained by theoretical calculations and compared with their activities. Peculiar correlations were observed, especially between activity, lipophilicity and IHB formation.
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Affiliation(s)
- Ana C. F. Soares
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404–600, Franca, São Paulo, Brazil
| | - Mirela M. W. Cabral
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404–600, Franca, São Paulo, Brazil
| | - Carlos H. G. Martins
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404–600, Franca, São Paulo, Brazil
| | - Alexsandro E. Ferreira
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404–600, Franca, São Paulo, Brazil
| | - Pedro A. S. Bergamo
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404–600, Franca, São Paulo, Brazil
| | - Leonida K. Omosa
- Department of Chemistry, University of Nairobi, Nairobi 00100, Kenya
| | - Jacob O. Midiwo
- Department of Chemistry, University of Nairobi, Nairobi 00100, Kenya
| | - Renato L. T. Parreira
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404–600, Franca, São Paulo, Brazil
| | - Vladimir C. G. Heleno
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, 14404–600, Franca, São Paulo, Brazil
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Omosa LK, Midiwo JO, Mbaveng AT, Tankeo SB, Seukep JA, Voukeng IK, Dzotam JK, Isemeki J, Derese S, Omolle RA, Efferth T, Kuete V. Antibacterial activities and structure-activity relationships of a panel of 48 compounds from Kenyan plants against multidrug resistant phenotypes. SPRINGERPLUS 2016; 5:901. [PMID: 27386347 PMCID: PMC4923020 DOI: 10.1186/s40064-016-2599-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 06/16/2016] [Indexed: 12/04/2022]
Abstract
In the current study forty eight compounds belonging to anthraquinones, naphthoquinones, benzoquinones, flavonoids (chalcones and polymethoxylated flavones) and diterpenoids (clerodanes and kauranes) were explored for their antimicrobial potential against a panel of sensitive and multi-drug resistant Gram-negative and Gram-positive bacteria. The minimal inhibitory concentration (MIC) determinations on the tested bacteria were conducted using modified rapid INT colorimetric assay. To evaluate the role of efflux pumps in the susceptibility of Gram-negative bacteria to the most active compounds, they were tested in the presence of phenylalanine arginine β-naphthylamide (PAβN) (at 30 µg/mL) against selected multidrug resistance (MDR) bacteria. The anthraquinone, emodin, naphthaquinone, plumbagin and the benzoquinone, rapanone were active against methicillin resistant Staphylococcus aureus (MRSA) strains of bacteria with MIC values ranging from 2 to 128 μg/mL. The structure activity relationships of benzoquinones against the MDR Gram-negative phenotype showed antibacterial activities increasing with increase in side chain length. In the chalcone series the presence of a hydroxyl group at C3′ together with a methoxy group and a second hydroxyl group in meta orientation in ring B of the chalcone skeleton appeared to be necessary for minimal activities against MRSA. In most cases, the optimal potential of the active compounds were not attained as they were extruded by bacterial efflux pumps. However, the presence of the PAβN significantly increased the antibacterial activities of emodin against Gram-negative MDR E. coli AG102, 100ATet; K. pneumoniae KP55 and KP63 by >4–64 g/mL. The antibacterial activities were substantially enhanced and were higher than those of the standard drug, chloramphenicol. These data clearly demonstrate that the active compounds, having the necessary pharmacophores for antibacterial activities, including some quinones and chalcones are substrates of bacterial efflux pumps and therefore should be combined to efflux pump inhibitors in the fight against MDR bacterial infections.
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Affiliation(s)
- Leonidah K Omosa
- Department of Chemistry, School of Physical Sciences, University of Nairobi, P. O. Box 30197-00100, Nairobi, Kenya ; Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany
| | - Jacob O Midiwo
- Department of Chemistry, School of Physical Sciences, University of Nairobi, P. O. Box 30197-00100, Nairobi, Kenya
| | - Armelle T Mbaveng
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Simplice B Tankeo
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Jackson A Seukep
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Igor K Voukeng
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Joachim K Dzotam
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - John Isemeki
- Department of Chemistry, School of Physical Sciences, University of Nairobi, P. O. Box 30197-00100, Nairobi, Kenya
| | - Solomon Derese
- Department of Chemistry, School of Physical Sciences, University of Nairobi, P. O. Box 30197-00100, Nairobi, Kenya
| | - Ruth A Omolle
- Department of Chemistry, School of Physical Sciences, University of Nairobi, P. O. Box 30197-00100, Nairobi, Kenya
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, Johannes Gutenberg University, Staudinger Weg 5, 55128 Mainz, Germany
| | - Victor Kuete
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
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