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Orabi MAA, Abdelhamid RA, Elimam H, Elshaier YAMM, Ali AA, Aldabaan N, Alhasaniah AH, Refaey MS. Furofuranoid-Type Lignans and Related Phenolics from Anisacanthus virgularis (Salisb.) Nees with Promising Anticholinesterase and Anti-Ageing Properties: A Study Supported by Molecular Modelling. PLANTS (BASEL, SWITZERLAND) 2024; 13:150. [PMID: 38256704 PMCID: PMC10820861 DOI: 10.3390/plants13020150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/23/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024]
Abstract
Lignan phytomolecules demonstrate promising anti-Alzheimer activity by alleviating dementia and preserving nerve cells. The purpose of this work is to characterize the lignans of Anisacanthus virgularis and explore their potential anti-acetylcholinesterase and anti-ageing effects. Phytochemical investigation of A. virgularis aerial parts afforded a new furofuranoid-type lignan (1), four known structural analogues, namely pinoresinol (2), epipinoresinol (3), phillyrin (4), and pinoresinol 4-O-β-d-glucoside (5), in addition to p-methoxy-trans-methyl cinnamate (6) and 1H-indole-3-carboxaldehyde (7). The structures were established from thorough spectroscopic analyses and comparisons with the literature. Assessment of the anticholinesterase activity of the lignans 1-5 displayed noticeable enzyme inhibition of 1 (IC50 = 85.03 ± 4.26 nM) and 5 (64.47 ± 2.75 nM) but lower activity of compounds 2-4 as compared to the reference drug donepezil. These findings were further emphasized by molecular docking of 1 and 5 with acetylcholinesterase (AChE). Rapid overlay chemical similarity (ROCS) and structure-activity relationships (SAR) analysis highlighted and rationalized the anti-AD capability of these compounds. Telomerase activation testing of the same isolates revealed 1.64-, 1.66-, and 1.72-fold activations in cells treated with compounds 1, 5, and 4, respectively, compared to untreated cells. Our findings may pave the way for further investigations into the development of anti-Alzheimer and/or anti-ageing drugs from furofuranoid-type lignans.
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Affiliation(s)
- Mohamed A. A. Orabi
- Department of Pharmacognosy, College of Pharmacy, Najran University, Najran 66454, Saudi Arabia
| | - Reda A. Abdelhamid
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Assiut-Branch, Assiut 71524, Egypt;
| | - Hanan Elimam
- Department of Biochemistry, Faculty of Pharmacy, University of Sadat City, Sadat City 32958, Egypt;
| | - Yaseen A. M. M. Elshaier
- Department of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City 32958, Egypt;
| | - Ahmed A. Ali
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt;
| | - Nayef Aldabaan
- Department of Pharmacology, College of Pharmacy, Najran University, Najran 66454, Saudi Arabia;
| | - Abdulaziz Hassan Alhasaniah
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Najran University, Najran 66454, Saudi Arabia;
| | - Mohamed S. Refaey
- Department of Pharmacognosy, Faculty of Pharmacy, University of Sadat City, Sadat City 32958, Egypt
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Nguyen AK, Phuwapraisirisan P. A new furanonapthoquinone from the stems of Thunbergia laurifolia. Nat Prod Res 2024; 38:477-485. [PMID: 36170203 DOI: 10.1080/14786419.2022.2128343] [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: 04/30/2022] [Accepted: 09/20/2022] [Indexed: 10/14/2022]
Abstract
α-Glucosidase inhibitory assay-guided purification of Thunbergia laurifolia L. stems yielded a new compound named 5-acetoxyfuranonapthoquinone (1) along with nineteen known compounds (2-20). The structures of the isolated compounds were elucidated by the analysis of multiple spectroscopic data. The isolated compounds were evaluated for α-glucosidase inhibition. Syringaresinol (7), rosmarinic acid (11), 1,2,8-trihydroxyxanthone (16), and isojacareubin (18) showed the most potent inhibitory activity among isolated compounds. Kinetic study indicated that syringaresinol (7), 1,2,8-trihydroxyxanthone (16) and isojacareubin (18) could inhibit maltase and sucrase function by non-competitive manner, and rosmarinic acid (11) was identified as a non-competitive inhibitor against maltase and a mixed-manner inhibitor against sucrase.
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Affiliation(s)
- Anh-Khoa Nguyen
- Department of Chemistry, Faculty of Science, Center of Excellence in Natural Products, Chulalongkorn University, Bangkok, Thailand
| | - Preecha Phuwapraisirisan
- Department of Chemistry, Faculty of Science, Center of Excellence in Natural Products, Chulalongkorn University, Bangkok, Thailand
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El-Nashar HAS, Sayed AM, El-Sherief HAM, Rateb ME, Akil L, Khadra I, Majrashi TA, Al-Rashood ST, Binjubair FA, El Hassab MA, Eldehna WM, Abdelmohsen UR, Mostafa NM. Metabolomic profile, anti-trypanosomal potential and molecular docking studies of Thunbergia grandifolia. J Enzyme Inhib Med Chem 2023; 38:2199950. [PMID: 37080775 PMCID: PMC10120545 DOI: 10.1080/14756366.2023.2199950] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023] Open
Abstract
Trypanosomiasis is a protozoan disease transmitted via Trypanosoma brucei. This study aimed to examine the metabolic profile and anti-trypanosomal effect of methanol extract of Thunbergia grandifolia leaves. The liquid chromatography-high resolution electrospray ionisation mass spectrometry (LC-HRESIMS) revealed the identification of fifteen compounds of iridoid, flavonoid, lignan, phenolic acid, and alkaloid classes. The extract displayed a promising inhibitory activity against T. brucei TC 221 with MIC value of 1.90 μg/mL within 72 h. A subsequent in silico analysis of the dereplicated compounds (i.e. inverse docking, molecular dynamic simulation, and absolute binding free energy) suggested both rhodesain and farnesyl diphosphate synthase as probable targets for two compounds among those dereplicated ones in the plant extract (i.e. diphyllin and avacennone B). The absorption, distribution, metabolism, excretion, and toxicity (ADMET) profiling of diphyllin and avacennone were calculated accordingly, where both compounds showed acceptable drug-like properties. This study highlighted the antiparasitic potential of T. grandifolia leaves.
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Affiliation(s)
- Heba A S El-Nashar
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Ahmed M Sayed
- Department of Pharmacognosy, Faculty of Pharmacy, Nahda University, Beni-Suef, Egypt
| | - Hany A M El-Sherief
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Deraya University, Minia, Egypt
| | - Mostafa E Rateb
- School, of Computing, Engineering & Physical Sciences, University of the West of Scotland, Paisley, UK
| | - Lina Akil
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow, UK
| | - Ibrahim Khadra
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow, UK
| | - Taghreed A Majrashi
- Department of Pharmacognosy, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Sara T Al-Rashood
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Faizah A Binjubair
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Mahmoud A El Hassab
- Department of Medicinal Chemistry, Faculty of Pharmacy, King Salman International University (KSIU), Ras Sudr, Egypt
| | - Wagdy M Eldehna
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Usama Ramadan Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, Universities Zone, New Minia City, Egypt
| | - Nada M Mostafa
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
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Farag FSAA, Anwar HM, Aboushousha T, Mohammed HS, Ismail LDM. Ameliorative Effects of Thunbergia erecta L. Leaves Against the Initiation of Hepatocarcinogenesis Induced by Diethylnitrosamine in the Rat Model. Appl Biochem Biotechnol 2023; 195:5881-5902. [PMID: 36708488 PMCID: PMC10511368 DOI: 10.1007/s12010-022-04292-x] [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] [Accepted: 12/16/2022] [Indexed: 01/29/2023]
Abstract
Thunbergia erecta L. contains cytotoxic and liver-protective compounds. Thunbergia erecta L. leaves were macerated in 70% aqueous ethanol, then fractionated with ethyl acetate (9.3 g) and butanol (12.7 g), and attenuated Den-induced liver cancer in a Wistar rat experimental model. Ethyl acetate and butanol fractions were chromatographed using column chromatography and solid-phase extraction (SPE); Vicenin-II (1), kaempferol (2), biochanin A, sissotrin 7-O-β-glucopyranoside (3), gentianose (4), acacetin 7-O-β-glucopyranoside (5), apigenin 7-O-β-glucopyranoside (6), and rosmarinic acid (7) were extracted, and their structures were determined using NMR spectroscopy and ESI-mass spectrometry. Sixty rats were divided into six groups (ten each): control group, Den group, doxorubicin/Den-treated group, butanol fraction/Den-treated group, and isolated acacetin 7-O-β-glucopyranoside/Den-treated group. The liver enzymes and proinflammatory biomarkers were used to estimate the liver function. In addition, liver tissues were collected for analysis of oxidative stress markers, gene expression, and histopathology. There is a significant increase in the levels of liver enzymes, AFP, and TNF-ἁ. This was conveyed by a significant increase of IL-1 and caspase-3, elevation of MDA and reduction of GSH, and suppression of Bcl2 and elevation of Bax expression. All parameters in butanol, ethyl acetate fractions, and isolated acacetin 7-O-β-glucopyranoside (major constituents) of T. erecta L. were significantly improved to values close to those of the control group.
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Affiliation(s)
- Fatma Sayed Abdel-Aal Farag
- Pharmacognosy and Medicinal Plants Department, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, 11651, Egypt.
| | - Hend Mohamed Anwar
- Department of Biochemistry, National Organization for Drug Control & Research, Cairo, Egypt
| | - Tarek Aboushousha
- Department of Pathology, Theodor Bilharz Research Institute, Kornaish El-Nile, Warrak El-Hadar, P.O. 30 Imbaba, Giza, 12411, Egypt
| | - Hala Sh Mohammed
- Pharmacognosy and Medicinal Plants Department, Faculty of Pharmacy (Girls), Al-Azhar University, Cairo, 11651, Egypt
| | - Lotfi Diab Mousa Ismail
- Pharmacognosy and Medicinal Plants Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, 11651, Egypt
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Abdolmaleky HM, Zhou JR. Underlying Mechanisms of Brain Aging and Neurodegenerative Diseases as Potential Targets for Preventive or Therapeutic Strategies Using Phytochemicals. Nutrients 2023; 15:3456. [PMID: 37571393 PMCID: PMC10473240 DOI: 10.3390/nu15153456] [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: 07/01/2023] [Revised: 07/30/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023] Open
Abstract
During aging, several tissues and biological systems undergo a progressive decline in function, leading to age-associated diseases such as neurodegenerative, inflammatory, metabolic, and cardiovascular diseases and cancer. In this review, we focus on the molecular underpinning of senescence and neurodegeneration related to age-associated brain diseases, in particular, Alzheimer's and Parkinson's diseases, along with introducing nutrients or phytochemicals that modulate age-associated molecular dysfunctions, potentially offering preventive or therapeutic benefits. Based on current knowledge, the dysregulation of microglia genes and neuroinflammation, telomere attrition, neuronal stem cell degradation, vascular system dysfunction, reactive oxygen species, loss of chromosome X inactivation in females, and gut microbiome dysbiosis have been seen to play pivotal roles in neurodegeneration in an interactive manner. There are several phytochemicals (e.g., curcumin, EGCG, fucoidan, galangin, astin C, apigenin, resveratrol, phytic acid, acacetin, daucosterol, silibinin, sulforaphane, withaferin A, and betulinic acid) that modulate the dysfunction of one or several key genes (e.g., TREM2, C3, C3aR1, TNFA, NF-kb, TGFB1&2, SIRT1&6, HMGB1, and STING) affected in the aged brain. Although phytochemicals have shown promise in slowing down the progression of age-related brain diseases, more studies to identify their efficacy, alone or in combinations, in preclinical systems can help to design novel nutritional strategies for the management of neurodegenerative diseases in humans.
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Affiliation(s)
| | - Jin-Rong Zhou
- Nutrition/Metabolism Laboratory, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA;
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El-Hawary SS, Elwekeel A, Abo El-Ela SO, Abdelmohsen UR, Owis AI. Metabolic profiling and biological activity of two Livistona species: L. chinensis and L. australis. RSC Adv 2023; 13:14855-14862. [PMID: 37197185 PMCID: PMC10184005 DOI: 10.1039/d3ra01229h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 04/26/2023] [Indexed: 05/19/2023] Open
Abstract
Livistona is a genus of family Arecaceae and widely grown in tropical areas. The phytochemical analysis of the leaves and fruits of two Livistona species, L. chinensis and L. australis were carried out using UPLC/MS and determination of the total phenolic and total flavonoid contents, in addition to the isolation and identification of five phenolic compounds and one fatty acid from L. australis fruits. The total phenolic compounds varied from 19.72 to 78.87 mg GAE g-1 dry plant, while the total flavonoid contents were in the range of 4.82-17.75 mg RE g-1 dry plant. The UPLC/MS analysis of the two species led to the characterization of forty-four metabolites belonging mainly to the different classes of flavonoids and phenolic acids, while the compounds isolated from L. australis fruits were identified as gallic acid, vanillic acid, protocatechuic acid, hyperoside, quercetin 3-O-α-d-arabinopyranoside and dodecanoic acid. The in vitro biological evaluation of L. australis leaves and fruits were estimated as anticholinesterase, telomerase reverse transcriptase (TERT) potentiation and anti-diabetic through measuring the capacity of the extracts to inhibit dipeptidyl peptidase (DPP-IV). The results revealed that the leaves showed remarkable anticholinesterase and antidiabetic activity compared to fruits with IC50 values of 65.55 ± 3.75 ng mL-1 and 90.8 ± 4.48 ng mL-1, respectively. In the TERT enzyme assay, the leaves extract triggered a 1.49-fold increase in telomerase activity. This work showed that the Livistona species are a good source for flavonoids and phenolics, which play an important role in anti-aging and the treatment of chronic diseases, such as diabetes and Alzheimer's.
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Affiliation(s)
- Seham S El-Hawary
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University Cairo Egypt
| | - Ahlam Elwekeel
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University Beni-Suef Egypt
| | - Sara O Abo El-Ela
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University Beni-Suef Egypt
| | - Usama Ramadan Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University Minia Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University New Minia Egypt
| | - Asmaa I Owis
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University Beni-Suef Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Heliopolis University for Sustainable Development Cairo Egypt
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El-Din MIG, George MY, Youssef FS. Chemical characterization of the polyphenolic rich fraction of Thunbergia erecta and its therapeutic potential against doxorubicin and cyclophosphamide-induced cognitive impairment in rats. JOURNAL OF ETHNOPHARMACOLOGY 2023; 307:116213. [PMID: 36708885 DOI: 10.1016/j.jep.2023.116213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 01/22/2023] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Thunbergia erecta (Benth.) was traditionally used as anxiolytic, sedative and antidepressant. AIM OF THE STUDY The study aimed to characterize T. erecta leaf ethyl acetate fraction of alcohol extract (TEAF) and evaluate its neuroprotective effect on doxorubicin and cyclophosphamide-induced chemobrain. MATERIALS AND METHODS Chemical profiling of TEAF was done using (Liquid chromatography coupled with mass (LC-ESI-MS/MS). In vivo chemobrain model was performed by cognitive impairment induced by doxorubicin and cyclophosphamide. Behavioral assessments included moris water maze, y maze, novel object recognition task and passive avoidance tests. Histological examination and oxidative stress markers were investigated. Protein expression of HMDGB1/RAGE/pNF-κB pathway markers was done using western blotting. All results were applied to hippocampus and prefrontal cortex of rats. Molecular docking was done within the active sites of Human Receptor for Advanced Glycation Endproducts (RAGE) using Discovery studio software. RESULTS Twenty-one phytoconstituents, mostly polyphenolics, were characterized in TEAF of which eleven compounds were tentatively identified for the first time from T. erecta leaves where rosmarinic acid (11) represents the most prevailing compound. TEAF resulted in a marked dose-dependent amelioration of the histopathological changes evidenced by normal histological structure demonstrated in the hypocampal gesture of rats. TEAF demonstrated an enhanced memory and learning functioning in the different behavioral tests assessed especially at 200 mg/kg. It showed significant long-term spatial memory enhancement manifested by 50.32% increase in probe trial relative to chemobrain-induced group. It showed pronounced antioxidant activity evidenced by the significant elevation of prefrontal cortical and hippocampal reduced glutathione levels by 2.45 and 2.65 folds, respectively relative to the chemobrain-induced group. The pronounced reduction in hydrogen peroxide (1.24-1.93 folds) and malondialdehyde levels (1.42-2.60 folds) with significant elevation of catalase activity (12.65-31.47%) induced by TEAF supported its potent antioxidant activity. TEAF reversed the inflammatory cytokines release induced by chemotherapy via its interference with HMGB1/RAGE pathway suppressing the expression of HMBG1, RAGE, p65 (NF-kB), and IL-1β. In silico studies showed that rosmarinic acid displayed the best fitting at the active site of RAGE (ΔG = -40.39 kcal/mol). CONCLUSIONS Thunbergia erecta can act as a promising remedy for chemobrain that further consolidates its traditional importance.
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Affiliation(s)
- Mariam I Gamal El-Din
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, 11566, Egypt.
| | - Mina Y George
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, 11566, Cairo, Egypt.
| | - Fadia S Youssef
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, 11566, Egypt.
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Orabi MAA, Orabi EA, Abdel-Sattar ES, English AM, Hatano T, Elimam H. Structural determination and anticholinesterase assay of C-glycosidic ellagitannins from Lawsonia inermis leaves: A study supported by DFT calculations and molecular docking. Fitoterapia 2023; 164:105360. [PMID: 36423882 DOI: 10.1016/j.fitote.2022.105360] [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: 09/24/2022] [Revised: 11/18/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022]
Abstract
An ellagitannin monomer, lythracin M (1), and a dimer, lythracin D (2), along with eight known monomers (3-10) were isolated from Lawsonia inermis (Lythraceae) leaves. Lythracin M (1) is a C-glycosidic ellagitannin with a flavogallonyl dilactone moiety that participates in the creation of a γ-lactone ring with the anomeric carbon of the glucose core. Lythracin D (2) was determined as an atropisomer of the reported lythcarin D. These newly discovered structures (1 and 2) were determined by intensive spectroscopic experiments and by comparing DFT-calculated 1H1H coupling, 1H NMR chemical shifts, and ECD data with experimental values. The anti-acetylcholinesterase assay of the compounds 1-10 revealed that the C-1 ellagitannin epimers [casuarinin (7; IC50 = 34 ± 2 nM) and stachyurin (8; IC50 = 56 ± 3 nM)], and the new dimer (2; IC50 = 61 ± 4 nM) possess enzyme inhibitory effects comparable to the reference drug (donepezil, IC50 = 44 ± 3 nM). Molecular docking of compounds 1-10 with AChE identified the free galloyl moiety as an important pharmacophore in the anticholinesterase activity of tannins.
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Affiliation(s)
- Mohamed A A Orabi
- Department of Pharmacognosy, College of Pharmacy, Najran University, Najran 55461, Saudi Arabia.
| | - Esam A Orabi
- Department of Chemistry and Biochemistry, Concordia University, 7141 Sherbrooke Street West, Montréal, Québec H4B 1R6, Canada
| | - El-Shaymaa Abdel-Sattar
- Department of Medical Microbiology and Immunology, Faculty of Pharmacy, South Valley University, Qena 83523, Egypt
| | - Ann M English
- Department of Chemistry and Biochemistry, Concordia University, 7141 Sherbrooke Street West, Montréal, Québec H4B 1R6, Canada
| | - Tsutomu Hatano
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Tsushima, Kita-Ku, Okayama 700-8530, Japan
| | - Hanan Elimam
- Department of Biochemistry, Faculty of Pharmacy, University of Sadat City, Sadat City 32958, Egypt; Department of Biochemistry, Faculty of Pharmacy, Sinai University, Kantara, Egypt
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Ge L, Xie Q, Wei X, Li Y, Shen W, Hu Y, Yao J, Wang S, Du X, Zeng X. Five undescribed plant-derived bisphenols from Artemisia capillaris aerial parts: Structure elucidation, anti-hepatoma activities and plausible biogenetic pathway. ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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10
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Refaey MS, Shah MA, Fayed MA, Rasul A, Siddiqui MF, Qasim M, Althobaiti NA, Saleem U, Malik A, Blundell R, Eldahshan OA. Neuroprotective effects of steroids. PHYTONUTRIENTS AND NEUROLOGICAL DISORDERS 2023:283-304. [DOI: 10.1016/b978-0-12-824467-8.00005-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Tong L, Tian L, Xu X, Cheng Y. The complete chloroplast genome sequence of Thunbergia erecta (Benth.) T. Anders. (Acanthaceae). MITOCHONDRIAL DNA PART B 2022; 7:1952-1954. [DOI: 10.1080/23802359.2022.2140574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Lili Tong
- School of Horticulture & Landscape Architecture, Jinling Institute of Technology, Nanjing, China
| | - Lu Tian
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, Nanjing Forestry University, Nanjing, China
- State Environmental Protection Scientific Observation and Research Station for Ecology and Environment of Wuyi Mountains, Nanping, China
| | - Xiaogang Xu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, Nanjing Forestry University, Nanjing, China
- State Environmental Protection Scientific Observation and Research Station for Ecology and Environment of Wuyi Mountains, Nanping, China
| | - Yao Cheng
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Key Laboratory of State Forestry and Grassland Administration on Subtropical Forest Biodiversity Conservation, Nanjing Forestry University, Nanjing, China
- State Environmental Protection Scientific Observation and Research Station for Ecology and Environment of Wuyi Mountains, Nanping, China
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ElNashar H, Adel M, Elshazly M, Yehia IS, El-Sheshtawy HS, Almalki AA, Ibrahim N. Chemical Composition, Antiaging Activities and Molecular Docking Studies of Essential Oils from Acca sellowiana (Feijoa). Chem Biodivers 2022; 19:e202200272. [PMID: 35938449 DOI: 10.1002/cbdv.202200272] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 08/04/2022] [Indexed: 11/11/2022]
Abstract
This study aimed to investigate the chemical composition of essential oils isolated from Acca sellowiana (feijoa) leaves and stems and elaborate on their relevance as natural anti-aging, coupled with molecular-docking studies. The isolated oils were analysed using gas chromatography-mass spectrometry analysis and investigated for inhibitory effects against acetylcholinesterase, β -secretase, collagenase, elastase and tyrosinase. Molecular-modelling study was performed using MOE-Dock program to evaluate binding interactions of major components with the above-mentioned targets. The leaf oil revealed the predominance of caryophyllene oxide (24.3%), linalool (7.9%), and spathulenol (6.6%), while the stem oil was presented by caryophyllene oxide (38.1%), α-zingiberene (10.1%) and humulene oxide II (6.0%). The stem oil expressed superior inhibitory activities against acetylcholinesterase (IC 50 =0.15±0.01µg/mL), β -secretase (IC 50 =3.99±0.23µg/mL), collagenase (IC 50 =408.10±20.80 µg/mL), elastase (IC 50 =0.17±0.01 μg/mL) and tyrosinase (IC 50 =8.45 ± 0.40µg/mL). The valuable binding interactions and docking scores were observed for caryophyllene oxide and α-zingiberene with acetylcholinesterase. Besides, α-zingibirene followed by linalool and τ-cadinol revealed tight fitting with collagenase and elastase. Additionally, linalool, spathulenol and τ-cadinol showed the best binding energy to tyrosinase. This study provides valuable scientific data on A. sellowiana as potential candidates for the development of natural antiaging formulations.
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Affiliation(s)
- Heba ElNashar
- Ain Shams University Faculty of Pharmacy, pharmacognosy, Cairo, 16559, Cairo, EGYPT
| | - Mai Adel
- Ain Shams University Faculty of Pharmacy, medicinal chemistry, Cairo, Cairo, EGYPT
| | - Mohammed Elshazly
- Ain Shams University Faculty of Pharmacy, pharmacognosy, Cairo, Cairo, EGYPT
| | - Ibrahim S Yehia
- Ain Shams University Faculty of Pharmacy, pharmacognosy, Cairo, Cairo, EGYPT
| | | | - Adel A Almalki
- Ain Shams University Faculty of Pharmacy, pharmacognosy, Cairo, Cairo, EGYPT
| | - Nehal Ibrahim
- Ain Shams University Faculty of Pharmacy, pharmacognosy, Cairo, Cairo, EGYPT
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Systematic significance of seed morphology and foliar anatomy among Acanthaceous taxa. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-022-01137-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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14
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Non-Alkaloid Cholinesterase Inhibitory Compounds from Natural Sources. Molecules 2021; 26:molecules26185582. [PMID: 34577053 PMCID: PMC8472022 DOI: 10.3390/molecules26185582] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 01/12/2023] Open
Abstract
Alzheimer’s disease (AD) is a severe neurodegenerative disorder of different brain regions accompanied by distresses and affecting more than 25 million people in the world. This progressive brain deterioration affects the central nervous system and has negative impacts on a patient’s daily activities such as memory impairment. The most important challenge concerning AD is the development of new drugs for long-term treatment or prevention, with lesser side effects and greater efficiency as cholinesterases inhibitors and the ability to remove amyloid-beta(Aβ) deposits and other related AD neuropathologies. Natural sources provide promising alternatives to synthetic cholinesterase inhibitors and many have been reported for alkaloids while neglecting other classes with potential cholinesterase inhibition. This review summarizes information about the therapeutic potential of small natural molecules from medicinal herbs, belonging to terpenoids, coumarins, and phenolic compounds, and others, which have gained special attention due to their specific modes of action and their advantages of low toxicity and high efficiency in the treatment of AD. Some show superior drug-like features in comparison to synthetic cholinesterase inhibitors. We expect that the listed phytoconstituents in this review will serve as promising tools and chemical scaffolds for the discovery of new potent therapeutic leads for the amelioration and treatment of Alzheimer’s disease.
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Chemometric-enhanced metabolic profiling of five Pinus species using HPLC-MS/MS spectrometry: Correlation to in vitro anti-aging, anti-Alzheimer and antidiabetic activities. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1177:122759. [PMID: 34052752 DOI: 10.1016/j.jchromb.2021.122759] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 05/04/2021] [Accepted: 05/08/2021] [Indexed: 01/06/2023]
Abstract
Detailed metabolic profiling of needles of five Pinus species was investigated using complementary HPLC-MS/MS techniques together with supervised and unsupervised chemometric tools. This resulted in putative identification of 44 compounds belonging to flavonoids, phenolics, lignans, diterpenes and fatty acids. Unsupervised principal component analysis showed that differences were maintained across the metabolites characteristic of each Pinus species, are mainly related to di-O-p-coumaroyltrifolin, p-coumaroyl quinic acid derivative, arachidonic acid, hydroxypalmitic acid, isopimaric acid and its derivative. A supervised Partial Least Squares regression analysis was performed to correlate HPLC-MS/MS profiles with the variation observed in the in vitro anticholinesterase, antiaging and anti-diabetic potential. All investigated Pinus extracts exerted their antiaging activity via increasing telomerase and TERT levels in normal human melanocytes cells compared to the control (untreated cells). Profound inhibition activities of acetylcholinesterase and dipeptidyl peptidase-4 were also observed with P. pinea and P. canariensis extracts having comparable antidiabetic activities to sitagliptin as a standard antidiabetic drug. Our findings suggested that pine needles are a good source of phenolics and diterpenoids that have possible health promoting activities in management and alleviation of diabetic conditions and Alzheimer disease.
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El-Hawwary SS, Abd Almaksoud HM, Saber FR, Elimam H, Sayed AM, El Raey MA, Abdelmohsen UR. Green-synthesized zinc oxide nanoparticles, anti-Alzheimer potential and the metabolic profiling of Sabal blackburniana grown in Egypt supported by molecular modelling. RSC Adv 2021; 11:18009-18025. [PMID: 35480186 PMCID: PMC9033216 DOI: 10.1039/d1ra01725j] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 04/19/2021] [Indexed: 01/18/2023] Open
Abstract
Nowadays, the biosynthesis of metal nanoparticles, particularly from plants, has been gaining interest. In the present work, the methanolic extracts of leaves, fruits, and the pollen grains of Sabal blackburniana were used for the green synthesis of ZnO nanoparticles, which were early detected by the formation of precipitate and further confirmed by UV-vis spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infra-red (FT-IR) spectroscopy and zeta potential (ZP) studies. TEM analysis has shown different shapes, predominantly irregular small spherical narrow particles included in hexagonal structures with size ranging from 2.23 to 49.56 nm. The XRD pattern confirmed that all synthesized ZnO nanoparticles have wurtzite hexagonal structure with crystalline nature. The average particle crystallite sizes were 47.21, 47.67 and 47.8 nm. The UV-visible spectra showed λmax in the range of 354–368 nm, which indicated the presence of ZnO nanoparticles. The FT-IR analysis identifies the characteristic functional groups present on the surface of ZnO nanoparticles. The ZP determination demonstrated that all representative selected synthesized ZnONPs exhibited acceptable ZP values of −30.8 to −45.9 mV, which indicated their good stability. In addition, the anti-Alzheimer potential of the selected extracts and ZnONPs was evaluated by assessing acetylcholinesterase inhibitory activity in vitro according to the improved Ellman method. The results indicated that the selected extracts have acetylcholinesterase inhibitory activity, and highlighted the promising inhibitory potential of green-synthesized ZnONPs using pollen grains, fruits and leaves extracts; they exhibited a potent inhibitory effect with IC50 values 63.78 ± 1.04651, 81.985 ± 3.075 and 117.95 ± 6.858 ng ml−1 respectively in comparison to donepezil as standard (IC50 = 50.7 ± 5.769 ng ml−1). Dereplication analysis of the selected extracts was performed using LC-MS; metabolic profiling revealed the presence of 41 compounds belonging to various chemical classes: flavonoids, steroidal saponins, terpenoids, alkaloids, lignans, sterols and fatty acids. Docking these dereplicated metabolites against the human AChE showed that the non-glycosylated flavonoid class of compounds was able to achieve interesting binding modes inside the AChE active site; they are suggested to be associated with the observed anti-AChE activity of Sabal extracts. This study is the first report to shed light on the acetylcholinesterase inhibitory activity of green-synthesized ZnO nanoparticles of S. blackburniana metabolites. Schematic diagram representing the current study.![]()
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Affiliation(s)
- Seham S El-Hawwary
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University Cairo 11562 Egypt
| | | | - Fatema R Saber
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University Cairo 11562 Egypt
| | - Hanan Elimam
- Department of Biochemistry, Faculty of Pharmacy, University of Sadat City Sadat City 32897 Egypt
| | - Ahmed M Sayed
- Department of Pharmacognosy, Faculty of Pharmacy, Nahda University Beni-Suef 62513 Egypt
| | - Mohamed A El Raey
- Phytochemistry and Plant systematics Department, Pharmaceutical Division, National Research Centre Dokki Cairo Egypt
| | - Usama Ramadan Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University Universities Zone, 61111 New Minia City Minia Egypt .,Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt
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Othman A, Amen Y, Shimizu K. A novel acylated flavonol tetraglycoside and rare oleanane saponins with a unique acetal-linked dicarboxylic acid substituent from the xero-halophyte Bassia indica. Fitoterapia 2021; 152:104907. [PMID: 33892125 DOI: 10.1016/j.fitote.2021.104907] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/14/2021] [Accepted: 04/16/2021] [Indexed: 12/28/2022]
Abstract
In recent years, the scientific interest and particularly the economic significance of halophytic plants has been highly demanding due to the medicinal and nutraceutical potential of its bioactive compounds. A xero-halophyte Bassia indica is deemed to be a very cheap source of natural entities without chemical or biological investigation. In this context, a new acylated flavonol tetraglycoside, kaempferol-3-O-β-d-glucopyranosyl-(1→6)-O-[β-D-galactopyranosyl-(1→3)-2-O-trans-feruloyl-α-L-rhamnopyranosyl-(1→2)]-β-D-glucopyranoside (14), together with rare occurring flavonol triglycoside, isorhamnetin-3-O-β-d-glucopyranosyl-(1→6)-O-[α-L-rhamnopyranosyl-(1→2)]-β-D-glucopyranoside (15), were isolated from the aqueous methanol extract of the aerial parts of B. indica. The study also reported an optimal separation and characterization of a new seco-glycosidic oleanane saponin with 2'R,3'S stereocenters, identified as (2'R,3'S)-3-O-[2'-hydroxy-3'-(2"-O-glycolyl)-oxo-propionic acid-β-D-glucuronopyranosyl]-28-O-β-D-glucopyranosyl-olean-12-en-3β-ol-28-oic acid (17), in addition to its derivative, 3-O-[2'-(2"-O-glycolyl)-glyoxylyl-β-D-glucuronopyranosyl]-28-O-β-d-glucopyranosyl-olean-12-en-3β-ol-28-oic acid (16). The structures of all isolated compounds were elucidated based on 1D, 2D NMR, and HR-MS analysis, as well as comparing with similar derivatives published in the literature. Furthermore, thirteen known compounds were isolated and identified as β-sitosterol (1), vanillic acid (2), o-hydroxybenzoic acid (3), р-hydroxybenzoic acid (4), 6,7-dihydroxycoumarin (5), methyl caffeate (6), caffeic acid (7), quercetin (8), uracil (9), thymidine (10), tachioside (11), isorhamnetin-3-O-β-D-glucopyranoside (12), kaempferol-3-O-rutinoside (13). The anticholinesterase activity of all isolated compounds was evaluated.
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Affiliation(s)
- Ahmed Othman
- Department of Agro-environmental Sciences, Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University, Fukuoka 819-0395, Japan; Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo 11371, Egypt
| | - Yhiya Amen
- Department of Agro-environmental Sciences, Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University, Fukuoka 819-0395, Japan; Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Kuniyoshi Shimizu
- Department of Agro-environmental Sciences, Graduate School of Bioresources and Bioenvironmental Sciences, Kyushu University, Fukuoka 819-0395, Japan.
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Bakr RO, El-Behairy MF, Elissawy AM, Elimam H, Fayed MAA. New Adenosine Derivatives from Aizoon canariense L.: In Vitro Anticholinesterase, Antimicrobial, and Cytotoxic Evaluation of Its Extracts. Molecules 2021; 26:1198. [PMID: 33668096 PMCID: PMC7956659 DOI: 10.3390/molecules26051198] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/19/2021] [Accepted: 02/20/2021] [Indexed: 01/11/2023] Open
Abstract
Aizoaceae is a large succulent family characterized by many psychoactive species. Aizoon canariense L., a wild neglected plant traditionally used in gastrointestinal ailments, has been the subject of a limited number of phytochemical and biological studies. Therefore, herein, we investigated the in vitro cytotoxic, antimicrobial, and anticholinesteraseactivity of the aerial parts of A. canariense L. and analyzed the phytochemical compositions of the lipoidal and alkaloidal fractions. Petroleum ether extract showed the presence of behenic and tricosylic acid, while an in-depth investigation of the alkaloidal fraction revealed the identification of new adenine based alkaloids (1-5), which were isolated and identified for the first time from Aizoon canariense L. Their structures were elucidated based on extensive spectroscopic analyses. The alkaloidal extract showed a powerful cytotoxic effect (IC50 14-28 μg/mL), with the best effect against colon carcinoma, followed by liver and breast carcinomas. The alkaloidal extract also had a potent effect against Candida albicans and Escherichia coli, with minimum inhibitory concentrations (MIC) values of 312.5 and 625 µg/mL. The in vitro anticholinesterase activity was potent, with IC50 < 200 ng/mL for the tested extracts compared with 27.29 ± 0.49 ng/mL for tacrine.
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Affiliation(s)
- Riham O. Bakr
- Department of Pharmacognosy, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Giza 11787, Egypt;
| | - Mohammed F. El-Behairy
- Department of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat 32897, Egypt;
| | - Ahmed M. Elissawy
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt;
- Center for Drug Discovery Research and Development, Ain Shams University, Cairo 11566, Egypt
| | - Hanan Elimam
- Department of Biochemistry, Faculty of Pharmacy, University of Sadat City, Sadat 32897, Egypt;
| | - Marwa A. A. Fayed
- Department of Pharmacognosy, Faculty of Pharmacy, University of Sadat City, Sadat 32897, Egypt
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