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Jain NK, Tailang M, Kumar S, Chandrasekaran B, Alghazwani Y, Chandramoorthy HC, Kumar A, Deshpande H, Wal P, Balamurugan M, Chidambaram K. Appraising the therapeutical potentials of Alchornea laxiflora (Benth .) Pax & K. Hoffm ., an underexplored medicinal herb: A systematic review. Front Pharmacol 2022; 13:958453. [PMID: 36545314 PMCID: PMC9761395 DOI: 10.3389/fphar.2022.958453] [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: 05/31/2022] [Accepted: 10/31/2022] [Indexed: 12/04/2022] Open
Abstract
Ethnopharmacological relevance: Alchornea laxiflora (Benth.) Pax & K. Hoffm. (Euphorbiaceae) is an important traditional medicinal plant grown in tropical Africa. The stem, leaves, and root have been widely used in the folk medicine systems in Nigeria, Cameroon, South Africa, and Ghana to treat various ailments, including inflammatory, infectious, and central nervous system disorders, such as anxiety and epilepsy. Material and methods: The scientific name of the plant was validated using the "The Plant List," "Kew Royal Botanic Gardens," and Tropicos Nomenclatural databases. The literature search on A. laxiflora was performed using electronic search engines and databases such as Google scholar, ScienceDirect, PubMed, AJOL, Scopus, and Mendeley. Results: To the best of our knowledge, no specific and detailed review has been reported on A. laxiflora. Consequently, this review provides an up-to-date systematic presentation on ethnobotany, phytoconstituents, pharmacological activities, and toxicity profiles of A. laxiflora. Phytochemical investigations disclosed the presence of important compounds, such as alkaloids, flavonoids, phenolics, terpenoids, and fatty acids. Furthermore, various pharmacological activities and traditional uses reported for this botanical drug were discussed comprehensively. Conclusion: This systemic review presents the current status and perspectives of A. laxiflora as a potential therapeutic modality that would assist future researchers in exploring this African botanical drug as a source of novel drug candidates for varied diseases.
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Affiliation(s)
- Nem Kumar Jain
- School of Pharmacy, ITM University, Gwalior, Gwalior, Madhya Pradesh, India,School of Studies in Pharmaceutical Sciences, Jiwaji University, Gwalior, Madhya Pradesh, India
| | - Mukul Tailang
- School of Studies in Pharmaceutical Sciences, Jiwaji University, Gwalior, Madhya Pradesh, India
| | - Santosh Kumar
- School of Sciences, ITM University, Gwalior, Gwalior, Madhya Pradesh, India
| | - Balakumar Chandrasekaran
- School of Pharmacy, ITM University, Gwalior, Gwalior, Madhya Pradesh, India,Faculty of Pharmacy, Philadelphia University, Amman, Jordan,*Correspondence: Balakumar Chandrasekaran, ; Kumarappan Chidambaram,
| | - Yahia Alghazwani
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha, Saudi Arabia
| | - Harish C. Chandramoorthy
- Department of Microbiology and Clinical Parasitology, College of Medicine, King Khalid University, Abha, Saudi Arabia,Center for Stem Cell Research, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Ashish Kumar
- Department of Microbiology and Clinical Parasitology, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Hemali Deshpande
- Department of Anatomy, College of Medicine, King Khalid University, Abha, Saudi Arabia
| | - Pranay Wal
- Department of Pharmacy, Pranveer Singh Institute of Technology, Kanpur, India
| | | | - Kumarappan Chidambaram
- Department of Pharmacology, College of Pharmacy, King Khalid University, Abha, Saudi Arabia,*Correspondence: Balakumar Chandrasekaran, ; Kumarappan Chidambaram,
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Ekennia AC, Uduagwu DN, Nwaji NN, Nwosa CC, Olowu OJ, Nwanji OL, Udu DA, Christopher SU, Andrew TA, Nkwor AN, Inya JE. Facile green synthesis and biological evaluation of biogenic silver nanoparticles using aqueous extract of Alchornea laxiflora leaf. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2021.2025398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Anthony C. Ekennia
- Department of Chemistry and Biochemistry, Alex Ekwueme Federal University, Ndufu-Alike, Ebonyi State, Nigeria
| | - Dickson N. Uduagwu
- Department of Chemistry and Biochemistry, Alex Ekwueme Federal University, Ndufu-Alike, Ebonyi State, Nigeria
| | - Njemuwa N. Nwaji
- Department of Chemistry and Biochemistry, Alex Ekwueme Federal University, Ndufu-Alike, Ebonyi State, Nigeria
| | - Chidimma C. Nwosa
- Department of Chemistry and Biochemistry, Alex Ekwueme Federal University, Ndufu-Alike, Ebonyi State, Nigeria
| | - Olawale J. Olowu
- Department of Chemistry and Biochemistry, Alex Ekwueme Federal University, Ndufu-Alike, Ebonyi State, Nigeria
| | - Obianuju L. Nwanji
- Department of Chemistry and Biochemistry, Alex Ekwueme Federal University, Ndufu-Alike, Ebonyi State, Nigeria
| | - David Agwu Udu
- Department of Science Education, Alex Ekwueme Federal University, Ndufu-Alike, Ebonyi State, Nigeria
| | - Sonde U. Christopher
- Department of Chemistry and Biochemistry, Alex Ekwueme Federal University, Ndufu-Alike, Ebonyi State, Nigeria
| | - Tyopine A. Andrew
- Department of Chemistry and Biochemistry, Alex Ekwueme Federal University, Ndufu-Alike, Ebonyi State, Nigeria
| | - Adachukwu N. Nkwor
- Department of Chemistry and Biochemistry, Alex Ekwueme Federal University, Ndufu-Alike, Ebonyi State, Nigeria
| | - Joseph E. Inya
- Department of Biochemistry, Federal University of Technology Owerri, Owerri, Imo State, Nigeria
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Pahuja M, Mehla J, Gupta YK. Status analysis of herbal drug therapies in epilepsy: advancements in the use of medicinal plants with anti-inflammatory properties. Comb Chem High Throughput Screen 2021; 25:1601-1618. [PMID: 33605852 DOI: 10.2174/1386207324666210219103430] [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: 08/20/2020] [Revised: 12/03/2020] [Accepted: 12/26/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Use of plants and plant products in health care has shown exponential increase in past two decades. INTRODUCTION In-spite of the availability of well-established pharmacotherapy for epilepsy, a large no of population still explores alternative treatments due to refractory seizures, adverse effects of drugs, chronic treatment, inaccessibility of standard therapies in rural areas and the social stigma attached to the disease. Various studies on medicinal plants showed the protective effect of herbals in animal models of epilepsy. METHOD In the present review, a status analysis of the traditional use of various medicinal plants in epilepsy with a special focus on plats having anti-inflammatory potential is recorded. RESULT AND CONCLUSION The shortcomings of research on medicinal plants which needs to be explored further in order to tackle the growing need of safer and effective drugs for epilepsy are discussed. Overall, there is a huge scope of herbal drugs in CNS disorders especially epilepsy, either as an adjunct by reducing the dose and thus side effects of standard anti-epileptic drugs or as standalone agent . Although, there is still an urgent need of well planned randomized controlled clinical trials to validate their efficacy and safety.
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Affiliation(s)
- Monika Pahuja
- Division of Basic Medical Sciences, Indian Council of Medical Research, New Delhi - 110 029. India
| | - Jogender Mehla
- Department of Neurological Surgery, Washington University School of Medicine, St. Louis-63110, Missouri. United States
| | - Yogendra Kumar Gupta
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi - 110 029. India
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Gulumian M, Yahaya ES, Steenkamp V. African Herbal Remedies with Antioxidant Activity: A Potential Resource Base for Wound Treatment. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2018; 2018:4089541. [PMID: 30595712 PMCID: PMC6282146 DOI: 10.1155/2018/4089541] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 10/23/2018] [Accepted: 11/07/2018] [Indexed: 12/21/2022]
Abstract
The use of traditional herbal remedies as alternative medicine plays an important role in Africa since it forms part of primary health care for treatment of various medical conditions, including wounds. Although physiological levels of free radicals are essential to the healing process, they are known to partly contribute to wound chronicity when in excess. Consequently, antioxidant therapy has been shown to facilitate healing of such wounds. Also, a growing body of evidence suggests that, at least, part of the therapeutic value of herbals may be explained by their antioxidant activity. This paper reviews African herbal remedies with antioxidant activity with the aim of indicating potential resources for wound treatment. Firstly, herbals with identified antioxidant compounds and, secondly, herbals with proven antioxidant activity, but where the compound(s) responsible for the activity has not yet been identified, are listed. In the latter case it has been attempted to ascribe the activity to a compound known to be present in the plant family and/or species, where related activity has previously been documented for another genus of the species. Also, the tests employed to assess antioxidant activity and the potential caveats thereof during assessment are briefly commented on.
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Affiliation(s)
- Mary Gulumian
- National Institute for Occupational Health, Johannesburg, South Africa
- Haematology and Molecular Medicine, University of the Witwatersrand, Johannesburg, South Africa
| | - Ewura Seidu Yahaya
- Department of Pharmacology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
- Department of Pharmacology, University of Cape Coast, Cape Coast, Ghana
| | - Vanessa Steenkamp
- Department of Pharmacology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
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Okokon JE, Augustine NB, Mohanakrishnan D. Antimalarial, antiplasmodial and analgesic activities of root extract of Alchornea laxiflora. PHARMACEUTICAL BIOLOGY 2017; 55:1022-1031. [PMID: 28183236 PMCID: PMC6130711 DOI: 10.1080/13880209.2017.1285947] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 11/21/2016] [Accepted: 01/19/2017] [Indexed: 05/31/2023]
Abstract
CONTEXT Alchornea laxiflora (Benth.) Pax. & Hoffman (Euphorbiaceae) root decoctions are traditionally used in the treatment of malaria and pain in Nigeria. OBJECTIVE To assess the antimalarial, antiplasmodial and analgesic potentials of root extract and fractions against malarial infections and chemically-induced pains. MATERIAL AND METHODS The root extract and fractions of Alchornea laxiflora were investigated for antimalarial activity against Plasmodium berghei infection in mice, antiplasmodial activity against chloroquine sensitive (Pf 3D7) and resistant (Pf INDO) strains of Plasmodium falciparum using SYBR green assay method and analgesic activity against experimentally-induced pain models. Acute toxicity study of the extract, cytotoxic activity against HeLa cells and GCMS analysis of the active fraction were carried out. RESULTS The root extract (75-225 mg/kg, p.o.) with LD50 of 748.33 mg/kg exerted significant (p < 0.05-0.001) antimalarial activity against P. berghei infection in suppressive, prophylactive and curative tests. The root extract and fractions also exerted moderate activity against chloroquine sensitive (Pf 3D7) and resistant (Pf INDO) strains of P. falciparum with the ethyl acetate fraction exerting the highest activity with IC50 value of 38.44 ± 0.89 μg/mL (Pf 3D7) and 40.17 ± 0.78 μg/mL (Pf INDO). The crude extract was not cytotoxic to HeLa cells with LC50 value >100 μg/mL. The crude extract and ethyl acetate fraction exerted significant (p < 0.05-0.001) analgesic activity in all pain models used. DISCUSSION AND CONCLUSIONS These results suggest that the root extract/fractions of A. laxiflora possess antimalarial, antiplasmodial and analgesic potentials and these justify its use in ethnomedicine to treat malaria and pain.
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Affiliation(s)
- Jude E. Okokon
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Uyo, Uyo, Nigeria
- Malaria Research Laboratory, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi, India
| | | | - Dinesh Mohanakrishnan
- Malaria Research Laboratory, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi, India
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Kuete V, Tchinda CF, Mambe FT, Beng VP, Efferth T. Cytotoxicity of methanol extracts of 10 Cameroonian medicinal plants towards multi-factorial drug-resistant cancer cell lines. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 16:267. [PMID: 27484842 PMCID: PMC4970256 DOI: 10.1186/s12906-016-1253-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 07/29/2016] [Indexed: 01/09/2023]
Abstract
Background Cancer chemotherapy is still hampered by clinical failures due to multi-drug resistance (MDR) of tumor cells. In the present study, we have investigated the cytotoxicity of 20 methanol extracts from 10 medicinal plants against the sensitive leukemia CCRF-CEM cells. The most cytotoxic extracts were then further tested on a panel of 8 human cancer cell lines, including various MDR phenotypes. Methods The cytotoxicity of the 20 methanol extracts from 10 Cameroonian medicinal plants was determined using a resazurin reduction assay. Meanwhile, flow cytometry was used to measure cell cycle, apoptosis, mitochondrial membrane potential (MMP), and reactive oxygen species (ROS). Results In the preliminary assay using CCRF-CEM cells, 12 extracts from five plants displayed IC50 values below 80 μg/mL, namely Albizia adianthifolia, Alchornea cordifolia, Alchornea laxiflora, Pennisetum purpureum, and Spathodea campanulata. the four best extracts were from two plants: Albizia adianthifolia roots (AAR) and bark (AAB) as well as Alchornea cordifolia leaves (ACL) and bark (ACB) had respective IC50 values of 0.98 μg/mL, 1.45 μg/mL, 8.02 μg/mL and 12.57 μg/mL in CCRF-CEM cells. They were further tested in 8 other cell lines as well as in normal AML12 hepatocytes. IC50 values ranging from 2.71 μg/mL (towards glioblastoma U87MG.ΔEGFR cells) to 10.30 μg/mL (towards breast adenocarcinoma MDA-MB-231-BCRP cells) for AAB, from 3.43 μg/mL (towards U87MG cells) to 10.77 μg/mL (towards colon carcinoma HCT116 (p53−/−) cells) for AAR and from 0.11 μg/mL (towards CCRF-CEM cells) to 108 μg/mL (towards leukemia CEM/ADR5000 cells) for doxorubicin (as control drug) were obtained. ACL and ACB extracts displayed selective activities. AAR and ACL extracts induced apoptosis in CCRF-CEM cells, through caspases activation and loss of MMP, while apoptotic cell death was mediated by MMP diruption and increase ROS production for ACL. Conclusion Some of the tested plants namely Albizia adianthifolia, Alchornea cordifolia, Alchornea laxiflora, Pennisetum purpureum, Spathodea campanulata represent a potential source of novel anticancer drugs. Especially, Albizia adianthifolia and Alchornea cordifolia revealed considerable cytotoxic activities that could be exploited to develop phytomedicines to fight cancers including MDR phenotypes.
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Tchinda CF, Voukeng IK, Beng VP, Kuete V. Antibacterial activities of the methanol extracts of Albizia adianthifolia, Alchornea laxiflora, Laportea ovalifolia and three other Cameroonian plants against multi-drug resistant Gram-negative bacteria. Saudi J Biol Sci 2016; 24:950-955. [PMID: 28490970 PMCID: PMC5415118 DOI: 10.1016/j.sjbs.2016.01.033] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 01/16/2016] [Accepted: 01/19/2016] [Indexed: 12/01/2022] Open
Abstract
In the last 10 years, resistance in Gram-negative bacteria has been increasing. The present study was designed to evaluate the in vitro antibacterial activities of the methanol extracts of six Cameroonian medicinal plants Albizia adianthifolia, Alchornea laxiflora, Boerhavia diffusa, Combretum hispidum, Laportea ovalifolia and Scoparia dulcis against a panel of 15 multidrug resistant Gram-negative bacterial strains. The broth microdilution was used to determine the minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) of the extracts. The preliminary phytochemical screening of the extracts was conducted according to the reference qualitative phytochemical methods. Results showed that all extracts contained compounds belonging to the classes of polyphenols and triterpenes, other classes of chemicals being selectively distributed. The best antibacterial activities were recorded with bark and root extracts of A. adianthifolia as well as with L. ovalifolia extract, with MIC values ranging from 64 to 1024 μg/mL on 93.3% of the fifteen tested bacteria. The lowest MIC value of 64 μg/mL was recorded with A. laxiflora bark extract against Enterobacter aerogenes EA289. Finally, the results of this study provide evidence of the antibacterial activity of the tested plants and suggest their possible use in the control of multidrug resistant phenotypes.
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Affiliation(s)
| | | | | | - Victor Kuete
- Corresponding author at: P.O. Box 67 Dschang, Cameroon. Tel.: +237 77 35 59 27; fax: +237 22 22 60 18.P.O. Box 67 DschangCameroon
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Latha M, Priyanka M, Rajasekar P, Manikandan R, Prabhu NM. Biocompatibility and antibacterial activity of the Adathoda vasica Linn extract mediated silver nanoparticles. Microb Pathog 2016; 93:88-94. [PMID: 26802519 DOI: 10.1016/j.micpath.2016.01.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 01/12/2016] [Accepted: 01/19/2016] [Indexed: 10/22/2022]
Abstract
The aim of this study is to investigate the biocompatibility and anti-Vibrio efficacy of green synthesized silver nanoparticles (AgNPs) using an aqueous leaf extract of Adathoda vasica (A. vasica). The green synthesized silver nanoparticles were characterized by UV-vis, Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX). A. vasica AgNPs showed significant antibacterial activity against Vibrio parahaemolyticus in agar bioassay and well diffusion method. Further, nanoparticles interactions with bacteria and its antibacterial activity were confirmed by CLSM analysis. In vivo evaluation results confirmed that synthesized A. vasica AgNPs had good antibacterial efficacy and also nontoxic to the Artemia nauplii.
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Affiliation(s)
- M Latha
- Department of Animal Health and Management, Alagappa University, Karaikudi 630 004, India
| | - M Priyanka
- Department of Animal Health and Management, Alagappa University, Karaikudi 630 004, India
| | - P Rajasekar
- Department of Animal Health and Management, Alagappa University, Karaikudi 630 004, India
| | - R Manikandan
- Department of Zoology, University of Madras, Guindy Campus, Chennai 600 025, India
| | - N M Prabhu
- Department of Animal Health and Management, Alagappa University, Karaikudi 630 004, India.
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Dzoyem JP, Eloff JN. Anti-inflammatory, anticholinesterase and antioxidant activity of leaf extracts of twelve plants used traditionally to alleviate pain and inflammation in South Africa. JOURNAL OF ETHNOPHARMACOLOGY 2015; 160:194-201. [PMID: 25476488 DOI: 10.1016/j.jep.2014.11.034] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 11/18/2014] [Accepted: 11/21/2014] [Indexed: 05/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Oxidative stress and inflammatory conditions are among the pathological features associated with the central nervous system in Alzheimer׳s disease. Traditionally, medicinal plants have been used to alleviate inflammation, pains and also other symptoms possibly associated with Alzheimer׳s disease. Therefore, the present study was designed to determine the in vitro anti-inflammatory, antioxidant and anticholinesterase activity of twelve South African medicinal plants traditionally used to alleviate pain and inflammation. MATERIALS AND METHODS Nitric oxide (NO) production in LPS-activated RAW 264.7 macrophages and 15-lipoxygenase (LOX) inhibitory assay were used to evaluate the anti-inflammatory activity. Acetylcholinesterase inhibition was assessed by using a modification of the Ellman׳s method. Antioxidant activity, total phenolic and total flavonoids contents were determined using standard in vitro methods. RESULTS The extract of Burkea africana had the highest anti-15-lipoxygenase activity with 85.92% inhibition at 100µg/mL. All the extracts tested inhibited nitric oxide (NO) production in a dose dependant manner in LPS-stimulated RAW 264.7 macrophages. However, extracts from Leucaena leucocephala, Lippia javanica inhibited the production of NO by 97% at a concentration of 25µg/mL. In addition, both Leucaena leucocephala and Englerophytum magaliesmontanum had strong activity against acetylcholinesterase with IC50 values of 118µg/mL and 160µg/mL respectively. Hight levels of phenolics and flavonoids were found in Leucaena leucocephala, Lippia javanica and Burkea africana. The correlation with antioxidant activities was not strong indicating that other metabolites may also be involved in antioxidant activity. CONCLUSIONS The results obtained in this study validate the use of leaf extracts of these plants in South African traditional medicine against inflammation. Extracts of these plants species might be of value in the management of various diseases emerging from oxidative stress and related degenerative disorders.
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Affiliation(s)
- J P Dzoyem
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort 0110, Pretoria, South Africa
| | - J N Eloff
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Private Bag X04, Onderstepoort 0110, Pretoria, South Africa.
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Evaluation of Antibacterial and Antifungal Properties of Alchornea laxiflora (Benth.) Pax. & Hoffman. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:684839. [PMID: 25688278 PMCID: PMC4320868 DOI: 10.1155/2015/684839] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 12/28/2014] [Indexed: 11/18/2022]
Abstract
Alchornea laxiflora leaf extract was tested against a range of microorganisms using standard microbiological methods for antimicrobial activities. The extract inhibited the growth of all the bacterial and 15 fungal isolates tested. The zones of inhibition exhibited against the test bacteria ranged between 12 mm and 24 mm and between 11 mm and 24 mm for the extract and the antibiotic streptomycin, respectively. The zones of inhibition observed against the fungal isolates by the extract ranged between 12 mm and 23 mm. The minimum inhibitory concentrations (MICs) and the minimum bactericidal concentrations (MBCs) exhibited by the extract against test bacteria ranged between 0.78 mg/mL–25 mg/mL and 1.56 mg/mL–25 mg/mL, respectively, while the MICs and minimum fungicidal concentrations (MFCs) values for the test fungi ranged between 8.75 mg/mL–35.00 mg/mL and 8.75 mg/mL–35.00 mg/L, respectively. The preliminary phytochemical screening of the extract revealed the presence of alkaloids, tannins, flavonoids, saponins, and reducing sugars as major phytoconstituents in the extract. A. laxiflora leaf extract is a potent source of antibacterial and antifungal compounds; further studies on the extract are ongoing in our laboratories to elucidate the probable mechanism(s) of action on bacteria and fungi found to be susceptible to the extract.
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11
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Adisa RA, Olorunsogo OO. Robustaside B and para‑hydroxyphenol: phenolic and antioxidant compounds purified from Cnestis ferruginea D.C induced membrane permeability transition in rat liver mitochondria. Mol Med Rep 2013; 8:1493-8. [PMID: 24026541 DOI: 10.3892/mmr.2013.1674] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 07/01/2013] [Indexed: 11/05/2022] Open
Abstract
The antioxidant properties of robustaside B and para‑hydroxyphenol isolated from Cnestis ferruginea were measured as the rate of inhibition of thiobarbituric acid reactive substance (TBARS) production in the Fe2+/ascorbate system. The modulatory effects of the compounds on mitochondrial membrane permeability transition (MMPT) were monitored spectrophotometrically as decreases in light scattering at 540 nm. The varying concentrations of robustaside B and para‑hydroxyphenol (0.05, 0.1, 0.2, 0.25, 0.5, 0.75 and 1 mM) significantly reduced (P<0.05) the amount of TBARS generated by the Fe2+/ascorbate system by 85.3, 86.4, 86.0, 86.1, 86.0, 86.0 and 86.0% and 86.7, 81.3, 81.3, 80, 80, 82.6 and 83.1%, respectively. Similarly, quercetin, a standard antioxidant, was found to induce an 80% reduction in the amount of TBARS produced. The same IC50 value of 0.025 mM was observed for robustaside B, para‑hydroxyphenol and quercetin. Pre‑incubation of varying concentrations of robustaside B (0.125, 0.2, 0.5 and 1 mM) with succinate‑energized mitochondria induced MMPT pore opening by 0, ‑33.3, ‑59.3 and ‑218.5%, compared with control mitochondria. Para‑hydroxyphenol at 0.1, 0.2, 0.25 and 0.5 mM induced MMPT pore opening in a concentration‑dependent manner up to 0.25 mM by ‑21, ‑54.4 and ‑107.0%, respectively. Quercetin at 0.05, 0.1, 0.25, 0.5, 0.75 and 1 mM also induced MMPT pore opening in the absence of calcium in a concentration‑dependent manner by 5, 3.7, ‑42.6, ‑81.5, ‑187 and ‑161.1%, respectively. The current observations confirm the antioxidant properties of robustaside B and para‑hydroxyphenol, and indicate a potential therapeutic use of the compounds for the treatment of diseases requiring the induction of cell death, including cancer.
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Affiliation(s)
- Rahmat A Adisa
- Laboratories for Biomembrane Research and Biotechnology, Department of Biochemistry, College of Medicine, University of Ibadan, Ibadan 200284, Nigeria
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Harinantenaina L, Bowman JD, Brodie PJ, Slebodnick C, Callmander MW, Rakotobe E, Randrianaivo R, Rasamison VE, Gorka A, Roepe PD, Cassera MB, Kingston DGI. Antiproliferative and antiplasmodial dimeric phloroglucinols from Mallotus oppositifolius from the Madagascar Dry Forest (1). JOURNAL OF NATURAL PRODUCTS 2013; 76:388-93. [PMID: 23286240 PMCID: PMC3606680 DOI: 10.1021/np300750q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Bioassay-guided fractionation of an ethanol extract of the leaves and inflorescence of Mallotus oppositifolius collected in Madagascar led to the isolation of the two new bioactive dimeric phloroglucinols mallotojaponins B (1) and C (2), together with the known mallotophenone (3). The structures of the new compounds were determined on the basis of spectroscopic evidence, including their 1D- and 2D-NMR spectra, mass spectrometry, and an X-ray crystal structure. Compounds 1 and 2 showed potent antimalarial activity against chloroquine-resistant Plasmodium falciparum, with IC50 values of 0.75 ± 0.30 and 0.14 ± 0.04 μM, while 3 was inactive in this assay. Compounds 1-3 also displayed strong antiproliferative activity against the A2780 human ovarian cancer cell line (IC50 1.10 ± 0.05, 1.3 ± 0.1 and 6.3 ± 0.4 μM, respectively).
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Affiliation(s)
- Liva Harinantenaina
- Department of Chemistry and Virginia Tech Center for Drug Discovery, M/C 0212, Virginia Tech, Blacksburg, VA 24061, United States
| | - Jessica D. Bowman
- Department of Biochemistry and Virginia Tech Center for Drug Discovery, M/C 0308, Virginia Tech, Blacksburg, VA 24061, United States
| | - Peggy J. Brodie
- Department of Chemistry and Virginia Tech Center for Drug Discovery, M/C 0212, Virginia Tech, Blacksburg, VA 24061, United States
| | - Carla Slebodnick
- Department of Chemistry and Virginia Tech Center for Drug Discovery, M/C 0212, Virginia Tech, Blacksburg, VA 24061, United States
| | | | - Etienne Rakotobe
- Centre National d’Application des Recherches Pharmaceutiques, B.P 702, Antananarivo 101, Madagascar
| | | | - Vincent E. Rasamison
- Centre National d’Application des Recherches Pharmaceutiques, B.P 702, Antananarivo 101, Madagascar
| | - Alexander Gorka
- Department of Chemistry and Lombardi Cancer Center, Georgetown University, 37th and O Streets NW, Washington, DC 20057, United States
| | - Paul D. Roepe
- Department of Chemistry and Lombardi Cancer Center, Georgetown University, 37th and O Streets NW, Washington, DC 20057, United States
| | - Maria B. Cassera
- Department of Biochemistry and Virginia Tech Center for Drug Discovery, M/C 0308, Virginia Tech, Blacksburg, VA 24061, United States
| | - David G. I. Kingston
- Department of Chemistry and Virginia Tech Center for Drug Discovery, M/C 0212, Virginia Tech, Blacksburg, VA 24061, United States
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Two New Fatty Acid Derivatives from the Stem Bark of Alchornea laxiflora (Euphorbiaceae). J AM OIL CHEM SOC 2011. [DOI: 10.1007/s11746-011-1770-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Calvo TR, Demarco D, Santos FV, Moraes HP, Bauab TM, Varanda EA, Cólus IMS, Vilegas W. Phenolic Compounds in Leaves of Alchornea Triplinervia: Anatomical Localization, Mutagenicity, and Antibacterial Activity. Nat Prod Commun 2010. [DOI: 10.1177/1934578x1000500816] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Phenolic compounds are produced by secretory idioblasts and hypodermis, and by specialized cells of the epidermis and chlorenchyma of leaves of Alchornea triplinervia. Phytochemical investigation of these leaves led to the isolation of the known substances quercetin, quercetin-7- O-β-D-ghicopyranoside, quercetin-3- O-β-D-glucopyranoside, quercetin-3- O-β-D-galactopyranoside, quercetin-3- O-α-L-arabinopyranoside, amentoflavone, brevifolin carboxylic acid, gallic acid, and methyl gallate from the methanolic extract, and stigmasterol, campesterol, sitosterol, lupeol, friedelan-3-ol, and friedelan-3-one from the chloroform extract. In studies of antibacterial activity and mutagenicity, the methanolic extract showed promising activity against Staphylococcus aureus (MIC=62.5 μg/mL) and was slightly mutagenic in vitro and in vivo at the highest concentrations tested (1335 mg/kg b.w.).
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Affiliation(s)
- Tamara R. Calvo
- UNESP - São Paulo State University, Instituto de Química de Araraquara, Departamento de Química Orgânica, c.p. 355, CEP 14800-900, Araraquara, SP, Brazil
| | - Diego Demarco
- FATEC - Faculty of Technology of Capão Bonito, CEP 18304-750, Capão Bonito, SP, Brazil
| | - Fabio V. Santos
- UNESP - São Paulo State University, Faculdade de Ciências Farmacêuticas, Departamento de Ciências Biológicas, CEP 14801-902, Araraquara, SP, Brazil
| | - Helen P. Moraes
- UNESP - São Paulo State University, Faculdade de Ciências Farmacêuticas, Departamento de Ciências Biológicas, CEP 14801-902, Araraquara, SP, Brazil
| | - Taís M. Bauab
- UNESP - São Paulo State University, Faculdade de Ciências Farmacêuticas, Departamento de Ciências Biológicas, CEP 14801-902, Araraquara, SP, Brazil
| | - Eliana A. Varanda
- UNESP - São Paulo State University, Faculdade de Ciências Farmacêuticas, Departamento de Ciências Biológicas, CEP 14801-902, Araraquara, SP, Brazil
| | - Ilce M. S. Cólus
- UEL - Universidade Estadual de Londrina, Centro de Ciências Biológicas, Departamento de Biologia Geral, CEP 86051-990, Londrina, PR, Brazil
| | - Wagner Vilegas
- UNESP - São Paulo State University, Instituto de Química de Araraquara, Departamento de Química Orgânica, c.p. 355, CEP 14800-900, Araraquara, SP, Brazil
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Validation of anticonvulsant and sedative activity of six medicinal plants. Epilepsy Behav 2009; 14:454-8. [PMID: 19162225 DOI: 10.1016/j.yebeh.2008.12.022] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2008] [Revised: 12/16/2008] [Accepted: 12/22/2008] [Indexed: 11/22/2022]
Abstract
Acanthus montanus, Alchornea laxiflora, Hyptis spicigera, Microglossa pyrifolia, Piliostigma reticulatum, and Voacanga africana were evaluated with respect to anticonvulsant and sedative activity in mice using animal models (maximal electroshock (MES), N-methyl-D-aspartate (NMDA), pentylenetetrazol (PTZ), isonicotinic hydrazide acid (INH), picrotoxin (PIC), and strychnine (STR)-induced convulsions or turning behavior and diazepam-induced sleep). Acanthus montanus protected 66.6% of mice against MES-, PIC-, and STR-induced convulsions and 83.3% of mice from PTZ-induced convulsions. Alchornea laxiflora protected 75% and 87.5% of mice in the STR and NMDA tests, respectively, at a dose of 120 mg/kg. Hyptis spicigera protected 100 and 87.5% of mice against STR- and PTZ-induced convulsions, respectively, at a dose of 160 mg/kg. Microglossa pyrifolia protected 50% to 100% of mice against convulsions. Piliostigma reticulatum protected 62.5% to 100% of mice against convulsions and turning behavior. Voacanga africana protected 62.5% to 87.5% of mice against convulsions and turning behavior. All of the plants except A. laxiflora also exerted sedative activity by strongly increasing the total duration of sleep induced by diazepam.
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