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Raina K, Kumari R, Thakur P, Sharma R, Singh R, Thakur A, Anand V, Sharma R, Chaudhary A. Mechanistic role and potential of Ayurvedic herbs as anti-aging therapies. Drug Metab Pers Ther 2023; 38:211-226. [PMID: 37708954 DOI: 10.1515/dmpt-2023-0024] [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: 03/29/2023] [Accepted: 04/28/2023] [Indexed: 09/16/2023]
Abstract
INTRODUCTION Medicinal plants and herbs are the most important part of the Ayurveda. The term Rasayana in Charaka Samhita confers long life, youthfulness, strong body, freedom from diseases and the plants mentioned in Rsayana possess antiaging property. Aging is the collective term used for the complex detrimental physiological changes that reduce the functional ability of the cell. Oxidative stress, telomeres shortening, inflammation, and mitochondrial dysfunction are the main factors that regulate the aging process. Chronological aging is an irreversible process but the factors causing biological aging can be controlled. Ayurvedic herbs are better for the management of age-related problems. There are several natural bioactive agents present in plants that can delay the aging process in humans. They trigger actions like enhancing gene longevity and telomerase activity, ROS scavenging furthermore regeneration of tissues. CONTENT The plants mentioned in the Rasayana of Ayurveda have antiaging potential and can be used to solve modern problems related to aging. Some Ayurvedic plants and their antiaging potential has explained in this review. The main causes of aging, medicinal plants and their use as potential antiaging mediator are covered in this study. SUMMARY The process of aging is still an enigma. It is a complex, irretrievable, dynamic process that involves a number of factors and is subject to a number of environmental and genetic influences. Rasayana aspect has not been much investigated in clinical trials. Aging is considered to result from free radical damage. According to Charaka, Rasayana drugs open the partially or fully blocked channels. Many Rasayanas show free radical scavenging activity and has the potential to mitigate the effects of aging. It gives an overview of the significance of Ayurvedic medicinal plants as a source of inspiration and the use of these plants as remedies for antiaging. OUTLOOK This study briefly outlooks the causes of aging and how medicinal plants can be used to reverse the aging process. In this study, we discussed the antiaging potential and mechanistic roles of Ayurvedic herbs. These herbs have the properties to slow down the natural process of aging and can successfully manage common age-related problems.
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Affiliation(s)
- Kirti Raina
- Department of Plant Sciences, School of Life Sciences, Central University of Himachal Pradesh, Kangra, Himachal Pradesh, India
| | - Ruchika Kumari
- Department of Plant Sciences, School of Life Sciences, Central University of Himachal Pradesh, Kangra, Himachal Pradesh, India
| | - Palak Thakur
- Department of Plant Sciences, School of Life Sciences, Central University of Himachal Pradesh, Kangra, Himachal Pradesh, India
| | - Rohit Sharma
- Department of Forest Products, College of Forestry, Dr. Yashwant Singh Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh, India
| | - Randeep Singh
- PG Department of Zoology, Khalsa College Amritsar, Amritsar, Punjab, India
| | - Abhinay Thakur
- PG Department of Zoology, DAV College Jalandhar, Jalandhar, Punjab, India
| | - Vikas Anand
- Department of Physics & Astronomical Sciences, Central University of Himachal Pradesh, Kangra, Himachal Pradesh, India
| | - Rohit Sharma
- Department of Rasa Shastra and Bhaishajya Kalpana, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Ashun Chaudhary
- Department of Plant Sciences, School of Life Sciences, Central University of Himachal Pradesh, Kangra, Himachal Pradesh, India
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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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Sarbadhikary P, George BP. A Review on Traditionally Used African Medicinal Plant Annickia chlorantha, Its Phytochemistry, and Anticancer Potential. PLANTS 2022; 11:plants11172293. [PMID: 36079675 PMCID: PMC9460708 DOI: 10.3390/plants11172293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 08/31/2022] [Accepted: 08/31/2022] [Indexed: 11/16/2022]
Abstract
Annickia chlorantha Setten & P.J.Maas belongs to the Annonaceae family and is a multi-purpose medicinal plant, which has been extensively used for the traditional treatment option for malaria in western and central Africa. Its phytochemical composition is dominated particularly by various biologically active protoberberines and acetogenins. This review aims to provide a comprehensive review on the traditional uses, phytochemical profiles, and the toxicology of this plant from a myriad of available publications. Even after its tremendous applications against several different human ailments, this plant has been underestimated for its anticancer potential. Herein, based on the phytochemical composition, we discuss the probable mode of mechanism for its antiproliferative activity, which highlights its importance for cytotoxicity screenings against cancer cells. Additionally, this article discusses several research questions and suggests the future directions of its applications in medicinal plant-based anticancer research.
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Fongnzossie Fedoung E, Biwole AB, Nyangono Biyegue CF, Ngansop Tounkam M, Akono Ntonga P, Nguiamba VP, Essono DM, Forbi Funwi P, Tonga C, Nguenang GM, Kemeuze V, Sonwa DJ, Tsabang N, Bouelet IS, Tize Z, Boum AT, Momo Solefack MC, Betti JL, Nouga Bissoue A, Lehman LG, Mapongmetsem PM, Nneme Nneme L, Ngono Ngane RA, Ngogang Yonkeu J. A review of Cameroonian medicinal plants with potentials for the management of the COVID-19 pandemic. ADVANCES IN TRADITIONAL MEDICINE 2021. [PMCID: PMC7994110 DOI: 10.1007/s13596-021-00567-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Evariste Fongnzossie Fedoung
- Laboratory of Forest Resources and Wood Valorization, University of Douala, PO Box 1872, Douala, Cameroon
- Laboratory of Process Engineering, University of Douala, PO Box 1872, Douala, Cameroon
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
- Advanced Technical Teachers Training School for Technical Education, University of Douala,, PO Box 1872, Douala, Cameroon
| | - Achille Bernard Biwole
- Laboratory of Forest Resources and Wood Valorization, University of Douala, PO Box 1872, Douala, Cameroon
| | | | - Marlene Ngansop Tounkam
- Laboratory of Botany, University of Yaoundé 1, PO Box 812, Yaoundé, Cameroon
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
| | - Patrick Akono Ntonga
- Laboratory of Animal Biology, Department of Animal Biology, Faculty of Science, University of Douala, P.O. Box 2701, Douala, Cameroon
| | - Véronique Priscille Nguiamba
- Advanced Technical Teachers Training School for Technical Education, University of Douala,, PO Box 1872, Douala, Cameroon
| | - Damien Marie Essono
- Laboratory of Botany, University of Yaoundé 1, PO Box 812, Yaoundé, Cameroon
| | - Preasious Forbi Funwi
- Laboratory of Botany, University of Yaoundé 1, PO Box 812, Yaoundé, Cameroon
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
| | - Calvin Tonga
- Laboratory of Animal Biology, Department of Animal Biology, Faculty of Science, University of Douala, P.O. Box 2701, Douala, Cameroon
| | - Guy Merlin Nguenang
- Laboratory of Botany, University of Yaoundé 1, PO Box 812, Yaoundé, Cameroon
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
| | - Victor Kemeuze
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
| | - Denis Jean Sonwa
- Center for International Forestry Research, PO Box 2008, Messa, Yaoundé, Cameroon
| | - Nole Tsabang
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
| | | | - Zra Tize
- Laboratory of Process Engineering, University of Douala, PO Box 1872, Douala, Cameroon
| | | | - Marie Caroline Momo Solefack
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
- Laboratory of Applied Botany, University of Dschang, PO Box 67, Dschang, Cameroon
| | - Jean Lagarde Betti
- Laboratory of Plant Biology and Physiology, University of Douala, P.O. Box 24157, Douala, Cameroon
| | - Achille Nouga Bissoue
- Laboratory of Process Engineering, University of Douala, PO Box 1872, Douala, Cameroon
| | - Leopold Gustave Lehman
- Laboratory of Animal Biology, Department of Animal Biology, Faculty of Science, University of Douala, P.O. Box 2701, Douala, Cameroon
| | - Pierre Marie Mapongmetsem
- Millenium Ecologic Museum, PO Box 8038, Yaoundé, Cameroon
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
| | - Leandre Nneme Nneme
- Advanced Technical Teachers Training School for Technical Education, University of Douala,, PO Box 1872, Douala, Cameroon
| | | | - Jeanne Ngogang Yonkeu
- Cameroon Ethnobotany Network, PO Box 8038, Yaoundé, Cameroon
- Cameroon Academy of Science, Douala, Cameroon
- Université des Montagnes, Bangangté, Cameroon
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Clinical Evaluation of the Safety and Effectiveness of Heptonica: A Ghanaian Hepatorestorative Polyherbal Product. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:9596182. [PMID: 32655671 PMCID: PMC7327574 DOI: 10.1155/2020/9596182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 06/03/2020] [Indexed: 11/28/2022]
Abstract
The incidence of liver diseases is increasing globally, and many patients in developing countries are resorting to the use of herbal products as treatment. This study was aimed at establishing the safety and effectiveness outcomes for patients with deranged liver panel treated with a Ghanaian finished polyherbal product. The product Heptonica is prepared by CPMR from three medicinal plants: Bidens pilosa, Citrus aurantifolia, and Trema orientalis. Fifty (50) participants with clinical and biochemical signs of liver impairment were purposively recruited and treated for a period of 28 days. Participants received Heptonica at a dose of 30 mL 8 hourly after meals for the treatment period. Clinical and biochemical evaluation (liver panel test, renal function test, haematology, and urinalysis) of subjects for the safety and effectiveness of the product was undertaken at days 0 (baseline), 14, and 28. Compared to the baseline values, Heptonica did not have any untoward effect on renal function, haematological parameters, and urine parameters of subjects. Clinical and liver panel results of the participants also improved compared to the baseline: serum aspartate transaminase (AST) (p < 0.0001), alanine transaminase (ALT) (p < 0.0001), gamma-glutamyltransferase (GGT) (p- 0.0013), total bilirubin (p-0.0136), direct bilirubin (p < 0.0001), total proteins (p-0.0409), and alkaline phosphates (p- 0.0284). Level of albumin showed no significant difference within the study period. The outcome of this study indicates Heptonica has hepatorestorative action with no observable toxicity and can be used with confidence as indicated as a liver tonic.
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Tietcheu Galani BR, Njouom R, Moundipa PF. Hepatitis C in Cameroon: What is the progress from 2001 to 2016? J Transl Int Med 2016; 4:162-169. [PMID: 28191540 DOI: 10.1515/jtim-2016-0037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Chronic hepatitis C is a major public health problem in sub-Saharan countries and particularly in Cameroon where the prevalence rate is around 7.6% in the age group of 55-59 years. Recent investigations into this infection allowed defining a national seroprevalence, characterizing virological and biological profiles of infected patients and identifying medicinal plants of potential interest in hepatitis C therapy. However, in Cameroon, no existing report currently presents a good overview of hepatitis C research in relation to these parameters. This review seeks to discuss major findings published since 2001 that have significantly advanced our understanding of the epidemiology and treatment of hepatitis C in Cameroonian patients and highlight the major challenges that remain to overcome. We performed a systematic search in Pubmed and Google Scholar. Studies evaluating prevalence, treatment, coinfection, and genetic diversity of HCV infection in Cameroon were included. Studies suggest that HCV prevalence in Cameroon would be low (around 1.1%) with a lot of disparities according to regions and age of participants. Elders, pregnant women, blood donors, health care workers, patients on hemodialysis, and homozygous sickle cell patients have been identified as risk groups. Moreover, HCV/HBV coinfection was found more prevalent than HCV/HIV coinfection. Phylogenic studies reported circulation of three main genotypes such genotypes 1, 2, and 4 but little is known about antiviral candidates from the Cameroonian pharmacopeia. In conclusion, some epidemiological data prove that hepatitis C in Cameroon is well known but efforts are still necessary to prevent or control this infection.
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Affiliation(s)
- Borris Rosnay Tietcheu Galani
- Laboratory of Applied Biochemistry, Department of Biological Sciences, Faculty of Science, University of Ngaoundere, PO Box 454 Ngaoundere, Ngaoundere, Cameroon, Cameroon; Laboratory of Pharmacology and Toxicology, Department of Biochemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Richard Njouom
- Virology Unit, Centre Pasteur du Cameroun, Yaoundé, Cameroun
| | - Paul Fewou Moundipa
- Laboratory of Pharmacology and Toxicology, Department of Biochemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
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Khaya grandifoliola C.DC: a potential source of active ingredients against hepatitis C virus in vitro. Arch Virol 2016; 161:1169-81. [PMID: 26843184 DOI: 10.1007/s00705-016-2771-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Accepted: 01/24/2016] [Indexed: 01/11/2023]
Abstract
In this study, we examined the antiviral properties of Khaya grandifoliola C.DC (Meliaceae) on the hepatitis C virus (HCV) life cycle in vitro and identified some of the chemical constituents contained in the fraction with the most antiviral activity. Dried bark powder was extracted by maceration in a methylene chloride/methanol (MCM) system (50:50; v/v) and separated on silica gel by flash chromatography. Infection and replication rates in Huh-7 cells were investigated by luciferase reporter assay and indirect immunofluorescence assay using subgenomic replicons, HCV pseudotyped particles, and cell-culture-derived HCV (HCVcc), respectively. Cell viability was assessed by MTT assay, and cellular gene expression was analysed by qRT-PCR. The chemical composition of the fraction with the most antiviral activity was analysed by coupled gas chromatography and mass spectrometry (GC-MS). Five fractions of different polarities (F0-F100) were obtained from the MCM extract. One fraction (KgF25) showed the strongest antiviral effect on LucUbiNeoET replicons at nontoxic concentrations. Tested at 100 µg/mL, KgF25 had a high inhibitory effect on HCV replication, comparable to that of 0.01 µM daclatasvir or 1 µM telaprevir. This fraction also inhibited HCVcc infection by mostly targeting the entry step. KgF25 inhibited HCV entry in a pan-genotypic manner by directly inactivating free viral particles. Its antiviral effects were mediated by the transcriptional upregulation of the haem oxygenase-1 gene and interferon antiviral response. Three constituents, namely, benzene, 1,1'-(oxydiethylidene)bis (1), carbamic acid, (4-methylphenyl)-, 1-phenyl (2), and 6-phenyl, 4-(1'-oxyethylphenyl) hexene (3), were identified from the active fraction KgF25 by GC-MS. Khaya grandifoliola contains ingredients capable of acting on different steps of the HCV life cycle.
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Olivier DK, Van Vuuren SF, Moteetee AN. Annickia affinis and A. chlorantha (Enantia chlorantha)--A review of two closely related medicinal plants from tropical Africa. JOURNAL OF ETHNOPHARMACOLOGY 2015; 176:438-462. [PMID: 26481608 DOI: 10.1016/j.jep.2015.10.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 08/31/2015] [Accepted: 10/12/2015] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Annickia affinis (Exell) Versteegh & Sosef, closely related to A. chlorantha Setten & P.J.Maas (both species also referred to as Enantia chlorantha Oliv.), from the Annonaceae family, are multi-purpose medicinal plants used widely across tropical Africa. The two Annickia species are morphologically distinct from each other and have different distribution patterns, but are frequently confused. Furthermore, the name Enantia chlorantha is an illegitimate name, but is still used today. MATERIALS AND METHODS A review of the literature was undertaken and an in-depth analysis of previous research and future prospectives are considered. While a myriad of publications cite the species "Enantia chlorantha", this is not the case for A. affinis and A. chlorantha, and no reviews are available for any of the species to date. Consequently, a summary of their ethnobotany, phytochemistry and biological properties is presented here (for the period 1933 - November 2014) in order to substantiate their traditional importance as medicines for rural people in Africa. RESULTS To this effect, these species seem to be the preferred traditional treatments for malaria in tropical Africa, an area suffering heavily under the malaria pandemic. Their chemical composition is dominated particularly by various isoquinoline alkaloids, as well as by acetogenins and sesquiterpenes, which have been isolated from the bark and leaves. All three of these classes of compounds have been reported to exhibit noteworthy biological activity. CONCLUSIONS Due to their widespread use, especially of the bark, these species have already been categorized as threatened with extinction. Consequently this study further aims to identify areas where more research needs to be conducted involving these important species, and also to suggest possible means of increasing the biological activities of their extracts as a way to conserve the species.
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Affiliation(s)
- D K Olivier
- Department of Pharmacy and Pharmacology, University of the Witwatersrand, 7 York Road, Parktown 2193, South Africa
| | - S F Van Vuuren
- Department of Pharmacy and Pharmacology, University of the Witwatersrand, 7 York Road, Parktown 2193, South Africa.
| | - A N Moteetee
- Department of Botany and Plant Biotechnology, University of Johannesburg, Cnr Kingsway and University Road, Auckland Park 2006, Johannesburg, South Africa
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In vitro antibacterial and antibiotic-potentiation activities of the methanol extracts from Beilschmiedia acuta, Clausena anisata, Newbouldia laevis and Polyscias fulva against multidrug-resistant Gram-negative bacteria. Altern Ther Health Med 2015; 15:412. [PMID: 26590804 PMCID: PMC4655084 DOI: 10.1186/s12906-015-0944-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Accepted: 11/20/2015] [Indexed: 11/25/2022]
Abstract
Background The present study was designed to investigate the antibacterial activities of the methanol extracts from different parts of Beilschmedia acuta Kosterm (Lauraceae), Clausena anisata (Willd) Hook (Rutaceae), Newbouldia laevis Seem (Bignoniaceae) and Polyscias fulva (Hiern) Harms (Araliaceae) as well as their synergistic effects with antibiotics against a panel of Gram-negative bacteria, including multi-drug resistant (MDR) phenotypes expressing active efflux pumps. Methods Broth microdilution method was used to determine the minimum inhibitory concentrations (MICs) and the minimum bactericidal concentrations (MBCs) of the extracts, as well as those of antibiotics in association with the most active ones, B. acuta, N. laevis and P. fulva. Results MIC values obtained indicate that extracts from the bark of B. acuta were active on all the 26 tested Gram-negative bacteria, with MICs ranging from values below 8 to 256 μg/mL. Other samples displayed selective activities, their inhibitory effects being observed on 9 (34.62 %) of the 26 bacterial strains for N. laevis leaves extract, 6 (23.10 %) for both C. anisata leaves and roots extracts, 7 (26.9 %) and 4 (15.4 %) for leaves and roots extracts of P. fulva respectively. Extract from B. actua bark displayed the best antibacterial activity with MIC values below 100 μg/mL against 16 (61.5 %) of the 26 tested microorganisms. The lowest MIC values (below 8 μg/mL) were obtained with this extract against Escherichia coli W3110 and Klebsiella pneumoniae ATCC11296. The MIC values of this extract were lower than those of ciprofloxacin against E. coli W3110, Enterobacter aerogenes ATCC13048, CM64 and Providencia stuartii NAE16. At MIC/2, the best percentages of synergistic effects (100 %), were obtained with B. acuta bark extract and tetracycline (TET) as well as with P. fulva leaves extract and TET and kanamycin (KAN). Conclusion The overall results of the present study provide information for the possible use of the studied plants and mostly Beilschmedia acuta in the control of bacterial infections including MDR phenotypes. Electronic supplementary material The online version of this article (doi:10.1186/s12906-015-0944-5) contains supplementary material, which is available to authorized users.
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Galani BRT, Sahuc ME, Njayou FN, Deloison G, Mkounga P, Feudjou WF, Brodin P, Rouillé Y, Nkengfack AE, Moundipa PF, Séron K. Plant extracts from Cameroonian medicinal plants strongly inhibit hepatitis C virus infection in vitro. Front Microbiol 2015; 6:488. [PMID: 26029203 PMCID: PMC4432692 DOI: 10.3389/fmicb.2015.00488] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 05/04/2015] [Indexed: 12/26/2022] Open
Abstract
According to some recent studies, Cameroon is one of the sub-Saharan African countries most affected by hepatitis C, with low access to the standard therapy based on the combination of pegylated interferon and ribavirin. A first ethnobotanical survey, conducted in the Western region of Cameroon, reported the use of several medicinal plants in traditional medicine for the healing of liver-related disorders. Crude organic extracts of five plants surveyed were prepared and their effect against hepatitis C virus (HCV) infection investigated. The HCV JFH1 strain cell culture system HCVcc was used. The antiviral activity was quantified by immunofluorescent labeling of HCV E1 envelope protein at 30 h post-infection in the presence of the plant extracts. Active compounds were then tested in time course infection experiments. Dose-response and cellular toxicity assays were also determined. Three extracts, methanol extracts from roots of Trichilia dregeana, stems of Detarium microcarpum and leaves of Phragmanthera capitata, showed anti-HCV activity, with half-maximal inhibitory concentration of 16.16, 1.42, and 13.17 μg/mL, respectively. Huh-7 cells were incubated with the extracts for 72 h and it appears that T. dregeana extract is not toxic up to 200 μg/mL, D. microcarpum up to 100 μg/mL and P. capitata up to 800 μg/mL. All the three extracts showed a strong inhibition of HCV entry and no effect on replication or secretion. Taken together, these results showed that extracts from Cameroonian medicinal plants are promising sources of anti-HCV agents.
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Affiliation(s)
- Borris R T Galani
- Laboratory of Pharmacology and Toxicology, Department of Biochemistry, Faculty of Science, University of Yaoundé I Yaoundé, Cameroon ; Department of Biological Sciences, Faculty of Science, University of Ngaoundéré Ngaoundéré, Cameroon
| | - Marie-Emmanuelle Sahuc
- Molecular and Cellular Virology, Center for Infection and Immunity of Lille, Inserm U1019 - CNRS UMR 8204, Institut de Biologie de Lille, Pasteur Institute of Lille, University of Lille Lille, France
| | - Frederic N Njayou
- Laboratory of Pharmacology and Toxicology, Department of Biochemistry, Faculty of Science, University of Yaoundé I Yaoundé, Cameroon
| | - Gaspard Deloison
- Molecular and Cellular Virology, Center for Infection and Immunity of Lille, Inserm U1019 - CNRS UMR 8204, Institut de Biologie de Lille, Pasteur Institute of Lille, University of Lille Lille, France
| | - Pierre Mkounga
- Laboratory of Physical Chemistry and Phytochemistry, Department of Organic Chemistry, Faculty of Science, University of Yaoundé I Yaoundé, Cameroon
| | - William F Feudjou
- Laboratory of Physical Chemistry and Phytochemistry, Department of Organic Chemistry, Faculty of Science, University of Yaoundé I Yaoundé, Cameroon
| | - Priscille Brodin
- Molecular and Cellular Virology, Center for Infection and Immunity of Lille, Inserm U1019 - CNRS UMR 8204, Institut de Biologie de Lille, Pasteur Institute of Lille, University of Lille Lille, France
| | - Yves Rouillé
- Molecular and Cellular Virology, Center for Infection and Immunity of Lille, Inserm U1019 - CNRS UMR 8204, Institut de Biologie de Lille, Pasteur Institute of Lille, University of Lille Lille, France
| | - Augustin E Nkengfack
- Laboratory of Physical Chemistry and Phytochemistry, Department of Organic Chemistry, Faculty of Science, University of Yaoundé I Yaoundé, Cameroon
| | - Paul Fewou Moundipa
- Laboratory of Pharmacology and Toxicology, Department of Biochemistry, Faculty of Science, University of Yaoundé I Yaoundé, Cameroon
| | - Karin Séron
- Molecular and Cellular Virology, Center for Infection and Immunity of Lille, Inserm U1019 - CNRS UMR 8204, Institut de Biologie de Lille, Pasteur Institute of Lille, University of Lille Lille, France
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Toyang NJ, Verpoorte R. A review of the medicinal potentials of plants of the genus Vernonia (Asteraceae). JOURNAL OF ETHNOPHARMACOLOGY 2013; 146:681-723. [PMID: 23395623 DOI: 10.1016/j.jep.2013.01.040] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 01/22/2013] [Accepted: 01/22/2013] [Indexed: 05/24/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Vernonia genus has about one thousand species and members of the genus are widely used as food and medicine. The aim of this review is to analyze published data on the ethnomedicinal, ethnoveterinary and zoopharmacognostic uses of plants of the Vernonia genus. This will help to identify the state of ethnopharmacological knowledge in regard to this genus and to propose future research priorities. MATERIALS AND METHODS The major scientific databases including SciFinder, Sciencedirect, Medline and Google Scholar were queried for information on Vernonia genus using various keyword combinations. The International Plant Name Index was also used to verify the names of species and authors. RESULTS A total of 109 Vernonia species were reported in the literature to have medicinal properties. One hundred and five (105) plants were linked to the treatment or management of 44 human diseases or health conditions. Plants of the genus also feature in ethnoveterinary and zoopharmacognostic practices. A total of 12 vernonia species were identified to be used in ethnoveterinary medicine while 2 species are used in self medication practices by chimpanzees and gorillas. In vitro and in vivo research studies reporting the validation of the medicinal properties of some species were also reviewed. One hundred and three bioactive compounds isolated from various Vernonia species were also identified. Vernonia amygdalina was identified as the most frequently used member of the Vernonia genus. The Vernolides, a class of sesquiterpene lactone were identified as the most studied compounds from the genus and show interesting bioactivity in antiplasmodial, antileishmanial, antischistosomial, cytotoxicity, antimicrobial and anti-inflammatory assays. CONCLUSION On the basis of results from a combination of in vitro and in vivo efficacy and toxicity studies reported, Vernonia amygdalina holds the most promise for development into a nutraceutical against diabetes and malaria while Vernonia cinerea has potential against cancer and inflammatory conditions. Vernolide A is so far the most promising single agent from a Vernonia species that has potential for development into an anticancer agent. The other Vernonia species and isolated compounds require further studies to ascertain their medicinal potentials.
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Affiliation(s)
- Ngeh J Toyang
- Virgin Botanicals & Biotech Inc. Columbia, MD, USA; Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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