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Oladeji OS, Oluyori AP, Dada AO. Landolphia (P. Beauv.) genus: Ethnobotanical, phytochemical and pharmacological studies. Saudi J Biol Sci 2024; 31:103988. [PMID: 38725580 PMCID: PMC11078703 DOI: 10.1016/j.sjbs.2024.103988] [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: 01/29/2024] [Revised: 03/31/2024] [Accepted: 04/04/2024] [Indexed: 05/12/2024] Open
Abstract
The genus Landolphia (P. Beauv.) belongs to the Apocynaceae family with over 65 species distributed all over the tropical regions. This genus has a considerable number of documented medicinal, industrial, and ecologically beneficial effects. Therefore, this review is tailored towards the appraisal of the traditional significance, phytochemistry, and pharmacological activities of the genus Landolphia. This will help researchers understand future research trends by bridging the gaps between documented literature and contemporary uses. Relevant information was obtained from selection of scientific databases such as Web of Science, PubMed, Scopus, Google Scholar, ScienceDirect and Wiley. From documented literature, different parts of Landolphia have been used to improve fertility, lessen menstrual pain, boost sex libido, cure malaria and typhoid. Several classes of bioactive constituents such as terpenoids, phenolics, flavonoids, steroids, fatty acids, saponins, phytosterol and phenylpropanoid, volatile compounds, lignans and coumarins have been isolated from this genus. These secondary metabolites could be responsible for the reported antimicrobial, antimalarial, aphrodisiac, antioxidant, anti-inflammatory, antidiabetic and anticancer activities exhibited by this genus. The leaves, flower, bark and root of this genus have a wide range of essential nutrients and antinutrients which are essential for normal growth and development in living organisms. Despite all findings indicating the economical, industrial and pharmacological activities of Landolphia species, secondary metabolites and pharmacological potency of Landolphia of this genus are not adequately documented. Therefore, bioassay-guided isolation on the Landolphia extracts with proven biological activities should be prioritised in order to isolate pharmacophores with unique structural frameworks.
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Affiliation(s)
- Oluwole Solomon Oladeji
- Industrial Chemistry Unit, Department of Physical Sciences, Landmark University, PMB 1001 Omu-Aran, Nigeria
- Landmark University SDG III: Good Health and Well-Being, Landmark University, PMB 1001 Omu-Aran, Nigeria
| | - Abimbola Peter Oluyori
- Industrial Chemistry Unit, Department of Physical Sciences, Landmark University, PMB 1001 Omu-Aran, Nigeria
- Landmark University SDG III: Good Health and Well-Being, Landmark University, PMB 1001 Omu-Aran, Nigeria
| | - Adewumi Oluwasogo Dada
- Industrial Chemistry Unit, Department of Physical Sciences, Landmark University, PMB 1001 Omu-Aran, Nigeria
- Landmark University SDG VI: Clean Water and Sanitation, Landmark University, PMB 1001 Omu-Aran, Nigeria
- Landmark University SDG XI: Sustainable Cities and Communities, Landmark University, PMB 1001 Omu-Aran, Nigeria
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Boateng R, Opoku-Ansah J, Eghan MJ, Adueming POW, Amuah CLY. Identification of Commercial Antimalarial Herbal Drugs Using Laser-Induced Autofluorescence Technique and Multivariate Algorithms. J Fluoresc 2024; 34:855-864. [PMID: 37392364 DOI: 10.1007/s10895-023-03309-w] [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: 04/19/2023] [Accepted: 06/13/2023] [Indexed: 07/03/2023]
Abstract
In malaria-prone developing countries the integrity of Anti-Malarial Herbal Drugs (AMHDs) which are easily preferred for treatment can be compromised. Currently, existing techniques for identifying AMHDs are destructive. We report on the use of non-destructive and sensitive technique, Laser-Induced-Autofluorescence (LIAF) in combination with multivariate algorithms for identification of AMHDs. The LIAF spectra were recorded from commercially prepared decoction AMHDs purchased from accredited pharmacy shop in Ghana. Deconvolution of the LIAF spectra revealed secondary metabolites belonging to derivatives of alkaloids and classes of phenolic compounds of the AMHDs. Principal Component Analysis (PCA) and Hierarchical Clustering Analysis (HCA) were able to discriminate the AMHDs base on their physicochemical properties. Based on two principal components, the PCA- QDA (Quadratic Discriminant Analysis), PCA-LDA (Linear Discriminant Analysis), PCA-SVM (Support Vector Machine) and PCA-KNN (K-Nearest Neighbour) models were developed with an accuracy performance of 99.0, 99.7, 100.0, and 100%, respectively, in identifying AMHDs. PCA-SVM and PCA-KNN provided the best classification and stability performance. The LIAF technique in combination with multivariate techniques may offer a non-destructive and viable tool for AMHDs identification.
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Affiliation(s)
- Rabbi Boateng
- Laser and Fibre Optics Centre, School of Physical Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Jerry Opoku-Ansah
- Laser and Fibre Optics Centre, School of Physical Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Moses Jojo Eghan
- Laser and Fibre Optics Centre, School of Physical Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana.
| | - Peter Osei-Wusu Adueming
- Laser and Fibre Optics Centre, School of Physical Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Charles Lloyd Yeboah Amuah
- Laser and Fibre Optics Centre, School of Physical Sciences, College of Agriculture and Natural Sciences, University of Cape Coast, Cape Coast, Ghana
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Agbebi EA, Omotuyi OI, Oyinloye BE, Okeke UB, Apanisile I, Okor B, Adefabijo D. Ethnomedicine, phytochemistry, and pharmacological activities of Uvaria chamae P. Beauv.: A comprehensive review. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03018-6. [PMID: 38421410 DOI: 10.1007/s00210-024-03018-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 02/20/2024] [Indexed: 03/02/2024]
Abstract
The use of medicinal plants as food and medicine has been a common practice in the world, especially in tropical African countries. One such plant in West Africa is Uvaria chamae, also known as Bush banana, renowned for its diverse ethnomedicinal applications and, more recently, for its pharmacological activities attributed to a rich array of phytochemical constituents. Various parts of the plant have been traditionally employed for the treatment of diverse health issues such as digestive disorders, fever, dysmenorrhea, cancer, wound healing, and many more. To unravel the bioactive compounds responsible for these medicinal properties, a comprehensive phytochemical analysis has been undertaken. Notable isolates include chamanetin, dichamanetin, uvaretin, and uvarinol from different parts of the plant. The pharmacological evaluation of these compounds has revealed significant anticancer and antimicrobial properties. Therefore, this review provides a thorough examination of the phytochemicals derived from Uvaria chamae, detailing their associated pharmacological activities both in vitro and in vivo. The review emphasizes the potential of Uvaria chamae as a valuable source of lead compounds for cancer chemotherapy and antimicrobial drug discovery.
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Affiliation(s)
- Emmanuel Ayodeji Agbebi
- Institute for Drug Research and Development, S.E. Bogoro Center, Afe Babalola University, PMB 5454, Ado Ekiti, 360001, Nigeria.
- Department of Pharmacognosy and Natural Products, College of Pharmacy, Afe Babalola University, PMB 5454, Ado Ekiti, 360001, Nigeria.
| | - Olaposi Idowu Omotuyi
- Institute for Drug Research and Development, S.E. Bogoro Center, Afe Babalola University, PMB 5454, Ado Ekiti, 360001, Nigeria
- Department of Pharmacology and Toxicology, College of Pharmacy, Afe Babalola University, PMB 5454, Ado Ekiti, 360001, Nigeria
- Bio-Computing & Drug Research Unit, Mols and Sims, Ado Ekiti, Ekiti State, Nigeria
| | - Babatunji Emmanuel Oyinloye
- Institute for Drug Research and Development, S.E. Bogoro Center, Afe Babalola University, PMB 5454, Ado Ekiti, 360001, Nigeria
- Phytomedicine, Biochemical Toxicology and Biotechnology Research Laboratories, Department of Biochemistry, College of Sciences, Afe Babalola University, PMB 5454, Ado Ekiti, 360001, Nigeria
- Biotechnology and Structural Biology (BSB) Group, Department of Biochemistry and Microbiology, University of Zululand, Kwa-Dlangezwa, 3886, South Africa
| | - Uchenna Benjamin Okeke
- Department of Pharmaceutical and Medicinal Chemistry, College of Pharmacy, Afe Babalola University, PMB 5454, Ado Ekiti, 360001, Nigeria
| | - IyanuOluwa Apanisile
- Institute for Drug Research and Development, S.E. Bogoro Center, Afe Babalola University, PMB 5454, Ado Ekiti, 360001, Nigeria
| | - Beatrice Okor
- Institute for Drug Research and Development, S.E. Bogoro Center, Afe Babalola University, PMB 5454, Ado Ekiti, 360001, Nigeria
| | - Daniel Adefabijo
- Institute for Drug Research and Development, S.E. Bogoro Center, Afe Babalola University, PMB 5454, Ado Ekiti, 360001, Nigeria
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Adelusi TI, Ojo TO, Bolaji OQ, Oyewole MP, Olaoba OT, Oladipo EK. Predicting Plasmodium falciparum kinase inhibitors from antimalarial medicinal herbs using computational modeling approach. In Silico Pharmacol 2023; 12:4. [PMID: 38130691 PMCID: PMC10730500 DOI: 10.1007/s40203-023-00175-z] [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: 08/23/2023] [Accepted: 11/03/2023] [Indexed: 12/23/2023] Open
Abstract
Malaria remains a significant public health challenge, with resistance to available drugs necessitating the development of novel therapies targeting invasion-dependent proteins. Plasmodium falciparum calcium-dependent protein kinase 1 (PfCDPK-1) is essential for host erythrocyte invasion and parasite asexual development. This study screened a library of 490 compounds using computational methods to identify potential PfCDPK-1 inhibitors. Three compounds; 17-hydroxyazadiradione, Picracin, and Epicatechin-gallate derived from known antimalarial botanicals, showed potent inhibitory effects on PfCDPK-1. These compounds exhibited better binding affinities (-8.8, -9.1, -9.3 kCal/mol respectively), pharmacokinetics, and physicochemical properties than the purported inhibitory standard of PfCDPK-1, Purfalcamine. Molecular dynamics simulations (50 ns) and molecular mechanics analyses confirmed the stability and binding rigidity of these compounds at the active pocket of PfCDPK-1. The results suggest that these compounds are promising pharmacological targets with potential therapeutic effects for malaria treatment/management without undesirable side effects. Therefore, this study provides new insights into the development of effective antimalarial agents targeting invasion-dependent proteins, which could help combat the global malaria burden. Supplementary Information The online version contains supplementary material available at 10.1007/s40203-023-00175-z.
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Affiliation(s)
- Temitope Isaac Adelusi
- Computational Molecular Biology and Drug Discovery Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, P.M.B 210214, Ogbomoso, Oyo State Nigeria
| | - Taiwo Ooreoluwa Ojo
- Computational Molecular Biology and Drug Discovery Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, P.M.B 210214, Ogbomoso, Oyo State Nigeria
- Genomics unit, Helix Biogen Institute, P.M.B 212102, Ogbomoso, Oyo State Nigeria
| | - Olawale Quadri Bolaji
- Computational Molecular Biology and Drug Discovery Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, P.M.B 210214, Ogbomoso, Oyo State Nigeria
| | - Moyosoluwa Precious Oyewole
- Computational Molecular Biology and Drug Discovery Laboratory, Department of Biochemistry, Ladoke Akintola University of Technology, P.M.B 210214, Ogbomoso, Oyo State Nigeria
| | - Olamide Tosin Olaoba
- Department of Molecular Microbiology and Immunology, University of Missouri, Columbia, MO 65211 USA
| | - Elijah Kolawole Oladipo
- Genomics unit, Helix Biogen Institute, P.M.B 212102, Ogbomoso, Oyo State Nigeria
- Laboratory of Molecular Biology, Bioinformatics and Immunology, Department of Microbiology, Adeleke University, Ede, Osun State Nigeria
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Elebiyo TC, Oluba OM, Adeyemi OS. Anti-malarial and haematological evaluation of the ethanolic, ethyl acetate and aqueous fractions of Chromolaena odorata. BMC Complement Med Ther 2023; 23:402. [PMID: 37946127 PMCID: PMC10634035 DOI: 10.1186/s12906-023-04200-8] [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: 02/21/2023] [Accepted: 10/06/2023] [Indexed: 11/12/2023] Open
Abstract
Malaria is a global health challenge with endemicity in sub-Saharan Africa, where there are multiple drug-resistant strains and limited access to modern health care facilities, especially in rural areas. Studies indicate that African traditional medicine could make a substantial contribution to the reduction of malaria-related deaths and achievement of universal health coverage (UHC), particularly in these regions. Thus, this study evaluated the curative antimalarial effects of Chromolaena odorata leaf extract using mouse model. Forty-five (45) albino mice weighing between 18 and 22 g were grouped into nine groups of 5 animals each. Animals in groups 2-9 were infected with the chloroquine-resistant strain of Plasmodium berghei, while animals in groups 3-9 were subsequently treated with 10 mg/kg chloroquine, a combination of 1.4 mg/kg artemether and 8.75 mg/kg lumefantrine (Coartem), and varying concentrations of the fraction from the aqueous leaf extract of C. odorata at day 3 post-infection. The findings from this study indicate that treatment with 400 mg/kg of the ethanolic fraction of the crude extract resulted in a significant decrease in parasite load (97.6%), which was comparable to the activities of the conventional drugs chloroquine (98.6%) and Coartem (98.8%). The ethyl acetate and ethanolic fractions at 400 mg/kg also ameliorated the significant alterations in the red blood cells, white blood cells, and platelets of the infected animals. The high antimalarial activity displayed by the ethanolic fraction could be due to the presence of quercetin and kaempferol, as detected by high performance liquid chromatography (HPLC) analysis. The findings suggest that the fractions from C. odorata could serve as an alternative source of malaria therapy, particularly in sub-Saharan Africa.
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Affiliation(s)
- Tobiloba Christiana Elebiyo
- SDG 03 Group - Good Health & Well-being, Landmark University, Omu-Aran, 251101, Kwara State, Nigeria
- Department of Biochemistry, Landmark University, PMB 1001, Omu-Aran, 251101, Nigeria
| | | | - Oluyomi Stephen Adeyemi
- SDG 03 Group - Good Health & Well-being, Landmark University, Omu-Aran, 251101, Kwara State, Nigeria.
- Department of Biochemistry, Landmark University, PMB 1001, Omu-Aran, 251101, Nigeria.
- Department of Biochemistry, Laboratory of Medicinal Biochemistry, Nanomedicine, & Toxicology, Bowen University, Iwo, Nigeria.
- Laboratory of Sustainable Animal Environment, Graduate School of Agricultural Science, Tohoku University, 232-3 Yomogida, Naruko-Onsen, Osaki, Miyagi, 989-6711, Japan.
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Iwuanyanwu VU, Banjo OW, Babalola KT, Olajide OA. Neuroprotection by Alstonia boonei De Wild., Anacardium occidentale L., Azadirachta indica A.Juss. and Mangifera indica L. JOURNAL OF ETHNOPHARMACOLOGY 2023; 310:116390. [PMID: 36965546 DOI: 10.1016/j.jep.2023.116390] [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: 01/09/2023] [Revised: 03/07/2023] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGY RELEVANCE Alstonia boonei De Wild. (stem bark), Anacardium occidentale L. (stem bark), Azadirachta indica A.Juss (leaves), Enantia chlorantha Oliv. (stem bark), Khaya senegalensis A.Juss (stem bark) Mangifera indica L. (stem bark), and Nauclea latifolia Sm. (stem bark) are used for treating malaria in southwest Nigeria. Surveys revealed that these plants are also employed for treating symptoms of malaria and cerebral malaria in the region. AIM OF THE STUDY In this study, the effects of freeze-dried extracts of these plants were investigated on synthetic hemozoin (HZ)-induced neuroinflammation, neuronal damage, and increased permeability of brain microvascular endothelial cells. MATERIALS AND METHODS Effects of freeze-dried plant extracts were investigated on neuroinflammation by measuring levels of pro-inflammatory mediators in culture supernatants, while in-cell western assays were used to measure protein levels of iNOS and NLRP3. Effects on HZ-induced neurotoxicity and ROS generation was measured using MTT and DCFDA assays, respectively. HZ-induced permeability of hCMEC/D3 endothelial cells was determined using the in vitro vascular permeability assay kit. RESULTS The extracts produced significant (p < 0.05) reduction in TNFα, IL-6, IL-1β, MCP-1, RANTES and iNOS/NO production in HZ-stimulated BV-2 microglia. Pre-treatment with 50 μg/mL of A. boonei, A. indica, A. occidentale, E. chlorantha and M. indica also resulted in the inhibition of NF-κB activation. Pre-treatment with A. indica produced, A. occidentale, M. indica and A. boonei reduced HZ-induced increased NLRP3 protein expression. HZ-induced increased caspase-1 activity was also reduced by A. boonei, A. occidentale, A. indica, E. chlorantha, and M. indica. Freeze-dried extracts of A. boonei, A. occidentale, A. indica and M. indica produced neuroprotective effect in HT-22 neuronal cells incubated with HZ by preventing HZ-induced neurotoxicity, ROS generation, DNA fragmentation and caspase 3/7 activity. Inhibition of HZ-induced increase in permeability of human hCMEC/D3 brain endothelial cells was also observed with A. boonei, A. occidentale, A. indica and M. indica, while reducing the release of TNFα and MMP-9. CONCLUSIONS These results suggest that A. boonei, A. occidentale, A. indica and M. indica are neuroprotective through inhibition of neuroinflammation, neuronal damage and increased permeability of blood brain barrier. The outcome of the study provides pharmacological evidence for the potential benefits of plants as herbal treatments for cerebral malaria symptoms.
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Affiliation(s)
- Victoria U Iwuanyanwu
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield, HD1 3DH, United Kingdom.
| | - Owolabi W Banjo
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield, HD1 3DH, United Kingdom.
| | - Kabirat T Babalola
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield, HD1 3DH, United Kingdom.
| | - Olumayokun A Olajide
- Department of Pharmacy, School of Applied Sciences, University of Huddersfield, Huddersfield, HD1 3DH, United Kingdom.
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Bezerra JJL, Pinheiro AAV, Dourado D. Antimalarial potential of Moringa oleifera Lam. (Moringaceae): A review of the ethnomedicinal, pharmacological, toxicological, and phytochemical evidence. J Venom Anim Toxins Incl Trop Dis 2023; 29:e20220079. [PMID: 37266375 PMCID: PMC10231345 DOI: 10.1590/1678-9199-jvatitd-2022-0079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 04/27/2023] [Indexed: 06/03/2023] Open
Abstract
Several regions of the world frequently use the species Moringa oleifera Lam. (Moringaceae) in traditional medicine. This situation is even more common in African countries. Many literature reports point to the antimalarial potential of this species, indicating the efficacy of its chemical compounds against malaria-causing parasites of the genus Plasmodium. From this perspective, the present study reviews the ethnobotanical, pharmacological, toxicological, and phytochemical (flavonoids) evidence of M. oleifera, focusing on the treatment of malaria. Scientific articles were retrieved from Google Scholar, PubMed®, ScienceDirect®, and SciELO databases. Only articles published between 2002 and 2022 were selected. After applying the inclusion and exclusion criteria, this review used a total of 72 articles. These documents mention a large use of M. oleifera for the treatment of malaria in African and Asian countries. The leaves (63%) of this plant are the main parts used in the preparation of herbal medicines. The in vivo antimalarial activity of M. oleifera was confirmed through several studies using polar and nonpolar extracts, fractions obtained from the extracts, infusion, pellets, and oils obtained from this plant and tested in rodents infected by the following parasites of the genus Plasmodium: P. berghei, P. falciparum, P. yoelii, and P. chabaudi. Extracts obtained from M. oleifera showed no toxicity in preclinical tests. A total of 46 flavonoids were identified in the leaves and seeds of M. oleifera by different chromatography and mass spectrometry methods. Despite the scarcity of research on the antimalarial potential of compounds isolated from M. oleifera, the positive effects against malaria-causing parasites in previous studies are likely to correlate with the flavonoids that occur in this species.
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Affiliation(s)
- José Jailson Lima Bezerra
- Graduate Program in Plant Biology, Department of Botany, Federal University of Pernambuco, Recife, PE, Brazil
| | | | - Douglas Dourado
- Graduate Program in Biosciences and Biotechnology in Health, Department of Immunology, Aggeu Magalhães-Fiocruz Institute, Recife, PE, Brazil
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Zothantluanga JH, Chetia D, Rajkhowa S, Umar AK. Unsupervised machine learning, QSAR modelling and web tool development for streamlining the lead identification process of antimalarial flavonoids. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2023; 34:117-146. [PMID: 36744427 DOI: 10.1080/1062936x.2023.2169347] [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: 10/31/2022] [Accepted: 01/10/2023] [Indexed: 06/18/2023]
Abstract
Identification of lead compounds with the traditional laboratory approach is expensive and time-consuming. Nowadays, in silico techniques have emerged as a promising approach for lead identification. In this study, we aim to develop robust and predictive 2D-QSAR models to identify lead flavonoids by predicting the IC50 against Plasmodium falciparum. We applied machine learning algorithms (Principal component analysis followed by K-means clustering) and Pearson correlation analysis to select 9 molecular descriptors (MDs) for model building. We selected and validated the three best QSAR models after execution of multiple linear regression (MLR) 100 times with different combinations of MDs. The developed models have fulfilled the five principles for QSAR models as specified by the Organization for Economic Co-operation and Development. The outcome of the study is a reliable and sustainable in silico method of IC50 (Mean ± SD) prediction that will positively impact the antimalarial drug development process by reducing the money and time required to identify potential antimalarial lead compounds from the class of flavonoids. We also developed a web tool (JazQSAR, https://etflin.com/news/4) to offer an easily accessible platform for the developed QSAR models.
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Affiliation(s)
- J H Zothantluanga
- Department of Pharmaceutical Sciences, Faculty of Science and Engineering, Dibrugarh University, Dibrugarh, India
| | - D Chetia
- Department of Pharmaceutical Sciences, Faculty of Science and Engineering, Dibrugarh University, Dibrugarh, India
| | - S Rajkhowa
- Centre for Biotechnology and Bioinformatics, Faculty of Biological Sciences, Dibrugarh University, Dibrugarh, India
| | - A K Umar
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Sumedang, Indonesia
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Okoye I, Yu S, Caruso F, Rossi M. X-ray Structure Determination, Antioxidant Voltammetry Studies of Butein and 2',4'-Dihydroxy-3,4-dimethoxychalcone. Computational Studies of 4 Structurally Related 2',4'-diOH Chalcones to Examine Their Antimalarial Activity by Binding to Falcipain-2. Molecules 2021; 26:molecules26216511. [PMID: 34770920 PMCID: PMC8588236 DOI: 10.3390/molecules26216511] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/20/2021] [Accepted: 10/24/2021] [Indexed: 12/02/2022] Open
Abstract
Malaria is a huge global health burden with resistance to currently available medicines resulting in the search for newer antimalarial compounds from traditional medicinal plants in malaria-endemic regions. Previous studies on two chalcones, homobutein and 5-prenylbutein, present in E. abyssinica, have shown moderate antiplasmodial activity. Here, we describe results from experimental and computational investigations of four structurally related chalcones, butein, 2′,4′-dihydroxy-3,4-dimethoxychalcone (DHDM), homobutein and 5-prenylbutein to elucidate possible molecular mechanisms by which these compounds clear malaria parasites. The crystal structures of butein and DHDM show that butein engages in more hydrogen bonding and consequently, more intermolecular interactions than DHDM. Rotating ring-disk electrode (RRDE) voltammetry results show that butein has a higher antioxidant activity towards the superoxide radical anion compared to DHDM. Computational docking experiments were conducted to examine the inhibitory potential of all four compounds on falcipain-2, a cysteine protease that is involved in the degradation of hemoglobin in plasmodium-infected red blood cells of the host. Overall, this work suggests butein as a better antimalarial compound due to its structural features which allow it to have greater intermolecular interactions, higher antioxidant activity and to create a covalent complex at the active site of falcipain-2.
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