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Salleh WMNHW, Khamis S. Essential Oil of Thottea grandiflora and its Lipoxygenase Inhibitory Activity. Chem Nat Compd 2021. [DOI: 10.1007/s10600-021-03522-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Lebedeva NS, Yurina ES, Guseinov SS, Gubarev YA, V’yugin AI. Destruction of Chitosan and Its Complexes with Cobalt(II) and Copper(II) Tetrasulphophthalocyanines. Polymers (Basel) 2021; 13:polym13162781. [PMID: 34451319 PMCID: PMC8400729 DOI: 10.3390/polym13162781] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 08/14/2021] [Accepted: 08/16/2021] [Indexed: 11/29/2022] Open
Abstract
Chitosan is a naturally occurring polysaccharide derived from chitin with a wide range of uses. Phthalocyanines are macroheterocyclic compounds that have a number of useful properties such as coloring and catalytic and antioxidant activity. Phthalocyanines are able to immobilize on chitosan, forming complexes with new useful properties. In this work, we evaluated the ability of phthalocyanines to increase the thermal stability of chitosan. Chitosan (CS) forms complexes with copper(II)-(CuPc) and cobalt(II)-(CoPc) tetrasulphophthalocyanines. The processes of destruction of chitosan (CS) and its complexes with sulphophthalocyanines CuPc and CoPc in oxidizing and inert atmospheres have been studied. It was established that, regardless of the atmosphere composition, the first chemical reactions taking place in the studied systems are elimination reactions. The latter ones in the case of chitosan and complex CS-CuPc lead to the formation of spatially crosslinked polymer structures, and it causes the release of CuPc from the polymer complex. It was found that in the case of CS-CoPc elimination reactions did not lead to the formation of crosslinked polymer structures but caused the destruction of the pyranose rings with a partial release of CoPc. Metallophthalocyanines showed antioxidant properties in the composition of complexes with chitosan, increasing the temperature of the beginning of glycosidic bond cleavage reaction by 30–35 °C in comparison with the similar characteristics for chitosan.
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Ghanbariasad A, Valizadeh A, Ghadimi SN, Fereidouni Z, Osanloo M. Nanoformulating Cinnamomum zeylanicum essential oil with an extreme effect on Leishmania tropica and Leishmania major. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102436] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Potential therapeutic natural products against Alzheimer's disease with Reference of Acetylcholinesterase. Biomed Pharmacother 2021; 139:111609. [PMID: 33915501 DOI: 10.1016/j.biopha.2021.111609] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 04/04/2021] [Accepted: 04/12/2021] [Indexed: 12/17/2022] Open
Abstract
Alzheimer's disease (AD), is the most common type of dementia primarily affecting the later years of life. Its prevalence is likely to increase in any aging population and will be a major burden on healthcare system by the mid of the century. Despite scientific and technological breakthroughs in the last 50 years, that have expanded our understanding of the disease on a system, cellular and molecular level, therapies that could stop or slow the progression of the disease are still unavailable. The Food and Drug Administration (FDA), has approved acetylcholinesterase (AChE) inhibitors (donepezil, galantamine, tacrine and rivastigmine) and glutamate receptor antagonist (memantine) for the treatment of AD. In this review we summarize the studies reporting phytocompounds and extracts from medicinal plants that show AChE inhibitory activities and could be of potential benefit in AD. Future research directions are suggested and recommendations made to expand the use of medicinal plants and their formulations to prevent, mitigate and treat AD.
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Wan Salleh WMNH, Ogunwa TH. Insights into the inhibitory mechanism and molecular interaction of novel alkaloids from Beilschmiedia glabra with lipoxygenase and acetylcholinesterase. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2020. [DOI: 10.1142/s021963361950038x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In this study, the mechanism underlying acetylcholinesterase (AChE) and 5-lipoxygenase (LOX) inhibition by two novel alkaloids, beilschglabrine A and beilschglabrine B, as well as their interaction footprints on the binding pockets were investigated. The results showed that beilschglabrine A and beilschglabrine B inhibit both AChE and LOX in a competitive manner by binding to their active sites thereby interfering with substrate access. The interaction of the alkaloids with the enzymes was favorable and stable with low binding energy values which correlate well with their IC[Formula: see text]. The depicted molecular interaction, structure-energetic pattern and binding conformations confirmed that beilschglabrine A is more potent than beilschglabrine B. The differences in the binding pose and potency of the alkaloids is occasioned by an extra methyl moiety on beilschglabrine B. The chemical scaffold of the alkaloids respected Lipinski’s rule of five and may be relevant in the development of new anti-inflammatory and anti-neurodegenerative disease drugs acting via AChE and LOX inhibition.
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Affiliation(s)
- Wan Mohd Nuzul Hakimi Wan Salleh
- Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris (UPSI), 35900 Tanjong Malim, Perak, Malaysia
| | - Tomisin Happy Ogunwa
- Centre for Biocomputing and Drug Design, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
- Department of Biochemistry, Adekunle Ajasin University, Akungba-Akoko, Ondo State, Nigeria
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Salleh WMNHW, Anuar MZA, Khamis S, Nafiah MA, Sul'ain MD. Chemical investigation and biological activities of the essential oil of Knema kunstleri Warb. from Malaysia. Nat Prod Res 2019; 35:2279-2284. [PMID: 31544509 DOI: 10.1080/14786419.2019.1669027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The chemical composition of the essential oil of Knema kunstleri Warb. (Myristicaceae) was investigated for the first time. The essential oil was obtained by hydrodistillation and fully characterized by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). In total, 36 components were identified in the essential oil, which made up 91.7% of the total oil. The essential oil is composed mainly of β-caryophyllene (23.2%), bicyclogermacrene (9.6%), δ-cadinene (7.3%), α-humulene (5.7%), and germacrene D (4.3%). The essential oil showed moderate activity towards DPPH free-radical scavenging and lipoxygenase inhibition. To the best of our knowledge, this is the first study of the composition and bioactivities of the essential oil report concerning the genus Knema.
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Affiliation(s)
| | - Muhammad Zul Afiq Anuar
- Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris (UPSI), Tanjong Malim, Malaysia
| | - Shamsul Khamis
- School of Environmental and Natural Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - Mohd Azlan Nafiah
- Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris (UPSI), Tanjong Malim, Malaysia
| | - Mohd Dasuki Sul'ain
- School of Health Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian, Malaysia
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Kh Akramov D, Zengin G, Kang SC, Sh Tojibaev K, Mahomoodally MF, Azimova SS, Mamadalieva NZ. Comparative study on the chemical composition and biological activities of the essential oils of three Lagochilus species collected from Uzbekistan. Nat Prod Res 2019; 35:2734-2738. [PMID: 31441666 DOI: 10.1080/14786419.2019.1655417] [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] [Indexed: 10/26/2022]
Abstract
Lagochilus species are mainly distributed in Central Asia and widely used in folk medicine as a sedative and haemostatic. The present investigation reports on the extraction by hydrodistillation and the chemical composition of three Lagochilus species (L. gypsaceus, L. inebrians and L. setulosus) essential oils from Uzbekistan. The chemical composition of these essential oils was determined by GC-MS. The results showed that the studied essential oils are made up mainly of linalool (11.97%), β-ionone (11.75%), trans-chrysanthenyl acetate (7.15%), α-terpineol (7.40%) for L. gypsaceus; trans-chrysanthenyl acetate (9.40%), eugenol (7.01%), trans-verbenol (3.85%), bicyclo[3.1.1]hept-3-en-2-one (3.76%), pinocarvone (3.43%) for L. inebrians; and finally 2,4-bis(1,1-dimethylethyl)phenol (19.78%), bicyclo[3.1.1]hept-2-en-4-ol (5.43%), hexadecanoic acid (5.39%), limonene (5.19%), 2-hexenal (5.03%) for L. setulosus. The best antioxidant and tyrosinase inhibitory activity was observed for the essential oil of L. inebrians. However, L. setulosus essential oil exhibited the strongest inhibitory effect against amylase.
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Affiliation(s)
- Davlat Kh Akramov
- Institute of the Chemistry of Plant Substances, Academy Sciences of Uzbekistan, Tashkent, Uzbekistan
| | - Gokhan Zengin
- Department of Biology, Selcuk University, Science Faculty, Konya, Turkey
| | - Sun Chul Kang
- Department of Biotechnology, Daegu University, Daegu, South Korea
| | - Komiljon Sh Tojibaev
- Institute of Botany, of the Academy Sciences of Uzbekistan, Tashkent, Uzbekistan
| | | | - Shahnoz S Azimova
- Institute of the Chemistry of Plant Substances, Academy Sciences of Uzbekistan, Tashkent, Uzbekistan
| | - Nilufar Z Mamadalieva
- Institute of the Chemistry of Plant Substances, Academy Sciences of Uzbekistan, Tashkent, Uzbekistan
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Salleh WMNH, Ahmad F, Yen KH, Zulkifli RM. Essential Oil Compositions of Malaysian Lauraceae: A Mini Review. PHARMACEUTICAL SCIENCES 2016. [DOI: 10.15171/ps.2016.11] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Salleh WMNHW, Ahmad F, Yen KH, Zulkifli RM. Anticholinesterase and Anti-inflammatory Constituents fromBeilschmiedia pulverulentaKosterm. ACTA ACUST UNITED AC 2016. [DOI: 10.20307/nps.2016.22.4.225] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Farediah Ahmad
- Department of Chemistry, Faculty of Science, University, Teknologi Malaysia (UTM), 81310 Skudai, Johor, Malaysia
| | - Khong Heng Yen
- School of Chemistry and Environment Studies, Faculty of Applied Sciences, University Teknologi MARA (UiTM) Sarawak Jalan Meranek, 94300 Kota Samarahan, Sarawak, Malaysia
| | - Razauden Mohamed Zulkifli
- Department of Bioscience and Health Sciences, Faculty of Biosciences and Medical Engineering, University Teknologi Malaysia (UTM), 81310 Skudai, Johor, Malaysia
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Salleh WMNHW, Ahmad F, Khong HY, Mohamed Zulkifli R. Comparative study of the essential oils of threeBeilschmiediaspecies and their biological activities. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12962] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
| | - Farediah Ahmad
- Department of Chemistry; Faculty of Science; Universiti Teknologi Malaysia (UTM); Skudai 81310 Johor Malaysia
| | - Heng Yen Khong
- School of Chemistry and Environmental Studies; Faculty of Applied Sciences; Universiti Teknologi MARA (UiTM) Sarawak; Kota Samarahan 94300 Sarawak Malaysia
| | - Razauden Mohamed Zulkifli
- Department of Bioscience and Health Sciences; Faculty of Biosciences and Medical Engineering; Universiti Teknologi Malaysia (UTM); Skudai 81310 Johor Malaysia
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