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Shit M, Dey A, Das Mahapatra A, Dutta B, Naskar K, Ray PP, Sinha C. Supramolecular assembly of an Au(III) complex of 2‐(3‐phenyl‐1H‐1,2,4‐triazol‐5‐yl)pyridine: Structure, biological studies and charge transportation. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Manik Shit
- Department of Chemistry Jadavpur University Kolkata India
- Narajole Raj College Paschim Medinipur Narajole India
| | - Arka Dey
- Department of Physics Jadavpur University Kolkata India
| | | | - Basudeb Dutta
- Department of Chemistry Jadavpur University Kolkata India
- Department of Chemical Sciences Indian Institute of Science Education and Research Kolkata Mohanpur West Bengal India
| | - Kaushik Naskar
- Department of Chemistry Jadavpur University Kolkata India
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Mondal J, Das Mahapatra A, Mandal KC, Chattopadhyay D. An extract of Stephania hernandifolia, an ethnomedicinal plant, inhibits herpes simplex virus 1 entry. Arch Virol 2021; 166:2187-2198. [PMID: 34041610 DOI: 10.1007/s00705-021-05093-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 03/22/2021] [Indexed: 11/25/2022]
Abstract
Stephania hernandifolia (Nimukho), an ethnomedicinal herb from rural Bengal, has been used traditionally for the management of nerve, skin, urinary, and digestive ailments. Here, we attempted to confirm the antiviral potential of aqueous, methanol, and chloroform extracts of S. hernandifolia against herpes simplex virus type 1 (HSV-1), the causative agent of orolabial herpes in humans, and decipher its underlying mechanism of action. The bioactive extract was standardized and characterized by gas chromatography-mass spectroscopy, while cytotoxicity and antiviral activity were evaluated by MTT and plaque reduction assay, respectively. Two HSV strains, HSV-1F and the clinical isolate VU-09, were inhibited by the chloroform extract (CE) with a median effective concentration (EC50) of 4.32 and 4.50 µg/ml respectively, with a selectivity index (SI) of 11. Time-of-addition assays showed that pre-treatment of virus-infected cells with the CE and its removal before infection reduced the number of plaques without lasting toxicity to the cell, indicating that the CE affected the early stage in the viral life cycle. The number of plaques was also reduced by direct inactivation of virions and by the addition of CE for a short time following attachment of virions. These results together suggest that modification of either the virion surface or the cell surface by the CE inhibits virus entry into the host cell.
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Affiliation(s)
- Joy Mondal
- ICMR-NICED Virus Unit, ID and BG Hospital, GB-4, First Floor, 57 Dr. Suresh C Banerjee Road, Beliaghata, Kolkata, 700010, India
- Department of Microbiology, Vidyasagar University, Midnapore, West Bengal, India
| | - Ananya Das Mahapatra
- ICMR-NICED Virus Unit, ID and BG Hospital, GB-4, First Floor, 57 Dr. Suresh C Banerjee Road, Beliaghata, Kolkata, 700010, India
| | - Keshab C Mandal
- Department of Microbiology, Vidyasagar University, Midnapore, West Bengal, India
| | - Debprasad Chattopadhyay
- ICMR-NICED Virus Unit, ID and BG Hospital, GB-4, First Floor, 57 Dr. Suresh C Banerjee Road, Beliaghata, Kolkata, 700010, India.
- ICMR-National Institute of Traditional Medicine, Nehru Nagar, Belagavi, 590010, India.
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Anand U, Nandy S, Mundhra A, Das N, Pandey DK, Dey A. A review on antimicrobial botanicals, phytochemicals and natural resistance modifying agents from Apocynaceae family: Possible therapeutic approaches against multidrug resistance in pathogenic microorganisms. Drug Resist Updat 2020; 51:100695. [PMID: 32442892 DOI: 10.1016/j.drup.2020.100695] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/03/2020] [Accepted: 03/29/2020] [Indexed: 12/15/2022]
Abstract
Accelerated emergence of drug- resistant pathogenic microbes, their unbeatable virulence and a gradual loss of efficacy of currently used antimicrobial agents over the last decade, have expanded the scope of herbal medicine to combat this emerging challenge to have a wide spectrum of activity to develop effective medicines with lesser untoward side effects. Plant-based natural products should be of utmost interest to today's pharmaceutical industries since they are a primary source of new chemical entities directed at new drug targets. Apocynaceae or 'Dogbane' family has attained a global reputation as a source of some life-saving plant-derived products and novel compounds. Members of this family have also been extensively investigated against several nosocomial pathogenic microbes through in vitro and in vivo experimental settings. Several plant-derived components obtained from members of this family have also exhibited remarkable microbial growth inhibitory properties. Popular and widely accepted international databases such as PubMed, Science Direct, ResearchGate, Scopus, Google Scholar, JSTOR and more were searched using the various search strings such as Apocynaceae, antimicrobials, multidrug resistance, resistance modifying agents and pathogenic microorganisms were used in various combinations to retrieve several citations related to the topic. The current review encompasses recent developments in experimental studies and phytochemical analyses which correlates with antimicrobial efficacy of selected Apocynaceous plants along with synergistic mechanism and structural details. The present review recognizes and leverages the importance of Apocynaceae plants, which could be of significant interest in the development of more effective and less toxic antimicrobial drugs which may surmount multidrug resistance. Three different paradigm models harnessing clinical antimicrobial resistance (AMR) including the plant family Apocynaceae, Gram-positive and Gram-negative bacterial species have been broadly discussed in this review. In a nutshell, the present review represents a comprehensive account on the antimicrobials and resistance modifying agents obtained from the members of the plant family Apocynaceae and derived phytochemicals. It also gives an insight into the underlying mode of action of these phytochemicals against an array of pathogenic bacteria, their mechanism of antibiosis, plant parts from which the phytochemicals were isolated or the extracts was prepared with a critical discussion on the botanically-derived antibiotics as a template for antimicrobial drug development.
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Affiliation(s)
- Uttpal Anand
- Department of Molecular and Cellular Engineering, Jacob Institute of Biotechnology and Bioengineering, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, Uttar Pradesh, 211007, India
| | - Samapika Nandy
- Ethnopharmacology and Natural Product Research Laboratory, Department of Life Sciences, Presidency University, 86/1 College Street, Kolkata, 700073, India
| | - Avinash Mundhra
- Department of Botany, Rishi Bankim Chandra College, Naihati, 743165, North 24 Parganas, West Bengal, India
| | - Neela Das
- Department of Botany, Rishi Bankim Chandra College, Naihati, 743165, North 24 Parganas, West Bengal, India
| | - Devendra Kumar Pandey
- Department of Biotechnology, Lovely Faculty of Technology and Sciences, Lovely Professional University, Phagwara, 144402, Punjab, India.
| | - Abhijit Dey
- Ethnopharmacology and Natural Product Research Laboratory, Department of Life Sciences, Presidency University, 86/1 College Street, Kolkata, 700073, India.
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Tan MCS, Carranza MS, Linis VC, Malabed RS, Oyong GG. Antioxidant, Cytotoxicity, and Antiophidian Potential of Alstonia macrophylla Bark. ACS OMEGA 2019; 4:9488-9496. [PMID: 31460040 PMCID: PMC6648722 DOI: 10.1021/acsomega.9b00082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 05/17/2019] [Indexed: 06/10/2023]
Abstract
The objective of this research was to find the possible pharmacognosy of the bark of the Philippine Alstonia macrophylla Wall. ex G.Don (AM). Gas chromatographic-mass spectral (GC-EI-MS) characterization and energy dispersive X-ray spectroscopy (EDX) were performed to detect the bioactive constituents. EDX analysis of AM bark displayed a high content of potassium (3.26%) and calcium (2.96%). Eight constituents were detected in AM crude dichloromethane (DCM) extracts, which consisted of a long-chain unsaturated fatty acid (17:0) and fatty acid esters such as ethyl hexadecanoate and methyl hexadecanoate. Extraction of AM bark using methanol and dimethyl sulfoxide (MeOH/DMSO) solvents resulted in the identification of 17 constituents, principally alkaloids (alstonerine, 34.38%; strictamin, 5.23%; rauvomitin, 4.29%; and brucine, 3.66%) and triterpenoids (γ-sitosterol, 3.85%; lupeol, 3.00%; 24-methylenecycloartanol, 2.81%; campesterol, 2.71%; β-amyrin, 2.30%; and stigmasterol, 2.13%). MeOH/DMSO samples of AM were used in the selected bioassays. The samples exhibited efficient free radical scavenging activity (IC50 = 0.71 mg/mL) and were noncytotoxic to normal HDFn (IC50 > 100 μg/mL) and neoplastic THP-1 cell lines (IC50 = 67.22 μg/mL) while highly degenerative to MCF-7 (IC50 = 6.34 μg/mL), H69PR (IC50 = 7.05 μg/mL), and HT-29 (IC50 = 9.10 μg/mL). Most interestingly, the AM samples inhibited the northern Philippine Cobra's (Naja philippinensis Taylor) venom (IC50 = 297.27 ± 9.33 μg/mL) through a secretory phospholipase A2 assay.
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Affiliation(s)
- Maria Carmen S. Tan
- Chemistry
Department, Biology Department, and Molecular Science Unit Laboratory
Center for Natural Sciences and Environmental Research, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines
| | - Mary Stephanie
S. Carranza
- Chemistry
Department, Biology Department, and Molecular Science Unit Laboratory
Center for Natural Sciences and Environmental Research, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines
| | - Virgilio C. Linis
- Chemistry
Department, Biology Department, and Molecular Science Unit Laboratory
Center for Natural Sciences and Environmental Research, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines
| | - Raymond S. Malabed
- Chemistry
Department, Biology Department, and Molecular Science Unit Laboratory
Center for Natural Sciences and Environmental Research, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines
- Department
of Chemistry, Graduate School of Science, Osaka University, 1-1
Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Glenn G. Oyong
- Chemistry
Department, Biology Department, and Molecular Science Unit Laboratory
Center for Natural Sciences and Environmental Research, De La Salle University, 2401 Taft Avenue, Manila 1004, Philippines
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Weber LD, Scur MC, Souza JGDLD, Toledo AG, Pinto FGDS. Antimicrobial activity and phytochemical prospection of vegetal extracts of Ocotea silvestris Vattimo-Gil and Ocotea diospyrifolia (Meisn.) against serotypes of Salmonella of poultry origin. REVISTA BRASILEIRA DE SAÚDE E PRODUÇÃO ANIMAL 2018. [DOI: 10.1590/s1519-99402018000100011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
SUMMARY The aim of this work was to evaluate the antimicrobial activity of plant extracts Ocotea silvestris Vattimo-Gil and Ocotea diospyrifolia (Meisn.) Mez against 10 serotypes Salmonella enterica of poultry origin of the highest incidence in the western region of Paraná, as well as to perform the phytochemical screening of the compounds of the two species. After obtaining the aqueous extract and the organic extracts (ethyl alcohol, ethyl acetate and hexane) was determined Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) by technique microdilution broth. Phytochemical prospecting performed according to qualitative methodology of precipitation and colorimetry. The extracts presented inhibitory and bactericidal activity in different concentrations (200 to 25 mg.mL-1) against the serotypes of Salmonella, varying according to the solvent extractor. The ethyl acetate extract presented the best results, followed by the alcoholic, aqueous and hexane extract. It is noteworthy that studies of antimicrobial activity with vegetable extract within the genus Ocotea are scarce, however, the Lauraceae family presents significant biological activities, mainly related to its essential oils. Phytochemical prospecting detected the presence of steroids and alkaloids in both Ocotea species, which may justify the antimicrobial potential found for Salmonella serotypes. It is concluded that these plants represent an alternative for the control of Salmonella in the poultry sector, reflecting a new perspective for studies with natural products.
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Vieira DS, Peixoto RM, Costa MM, Freire DP, Silva TMG, Silva TMS. Atividade antimicrobiana in vitro do extrato etanólico bruto da folha da Hymenaea martiana Hayne frente às Staphylococcus spp. e avaliação de seu potencial como desinfetante em cabras. PESQUISA VETERINARIA BRASILEIRA 2018. [DOI: 10.1590/1678-5150-pvb-4547] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
RESUMO: Este estudo objetivou avaliar a ação antimicrobiana e antisséptica do extrato etanólico bruto da folha da Hymenaea martiana (Jatobá). O estudo foi realizado no Laboratório de Microbiologia e Imunologia da UNIVASF, na cidade de Petrolina-PE. Os extratos foram preparados utilizando diferentes diluentes, sendo estes: álcool etílico absoluto e a água destilada. Em seguida, foi empregada a técnica da Concentração Inibitória Mínima (MIC) e da Concentração Bactericida Mínima (CBM). Todos os ensaios foram realizados em triplicata. A CBM média do extrato diluído em etanol foi de 358μg/μL e do extrato diluído em água destilada foi igual a 520,82μg/mL. Não houve diferença (P<0,05) quanto à inibição bacteriana para o extrato diluído em álcool etílico absoluto ou água destilada autoclavada. Ao comparar a atividade do extrato diluído em álcool etílico absoluto e a relação com a presença do gene blaZ, observou-se que os isolados negativos para o gene pesquisado apresentaram uma CBM igual a 412,3μg/mL, e, quando comparadas aos que foram positivos para o gene blaZ, que foi de 308,80μg/mL, contudo sem diferença estatística. Quanto à inibição das bactérias utilizando extrato aquoso, a atividade foi igual para as bactérias com ou sem o gene (520,82μg/mL). Desse modo, tanto o extrato diluído em álcool etílico absoluto quanto em agua destilada autoclavada demonstrou atividade antimicrobiana, sugerindo que ocorreu extração de substâncias bioativas. Em relação ao potencial antisséptico, H. martiana teve ação pareada com o cloro, contudo aquele agiu mais rapidamente, enquanto o cloro agiu de modo ideal uma hora após a aplicação; ambos os resultados destacam que o extrato etanólico bruto das folhas de H. martiana possui potencial de combate à proliferação de bactérias ambientais e infecciosas, surgindo como uma forma de prevenir a mastite.
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Affiliation(s)
| | - Rodolfo M. Peixoto
- Instituto Federal de Educação, Ciência e Tecnologia do Sertão Pernambucano, Brazil
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Characterization of pea starch-guar gum biocomposite edible films enriched by natural antimicrobial agents for active food packaging. FOOD AND BIOPRODUCTS PROCESSING 2017. [DOI: 10.1016/j.fbp.2017.06.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Xue P, Yang X, Sun X, Ren G. Antifungal activity and mechanism of heat-transformed ginsenosides from notoginseng against Epidermophyton floccosum, Trichophyton rubrum, and Trichophyton mentagrophytes. RSC Adv 2017. [DOI: 10.1039/c6ra27542g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The improved antifungal activity of notoginseng can be attributed to the formation of less polar ginsenosides by heat transformation.
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Affiliation(s)
- Peng Xue
- Institute of Crop Sciences
- Chinese Academy of Agricultural Sciences
- Beijing
- People's Republic of China
- College of Food Science and Technology
| | - Xiushi Yang
- Institute of Crop Sciences
- Chinese Academy of Agricultural Sciences
- Beijing
- People's Republic of China
| | - Xiaoyan Sun
- Institute of Crop Sciences
- Chinese Academy of Agricultural Sciences
- Beijing
- People's Republic of China
- College of Food Science and Technology
| | - Guixing Ren
- Institute of Crop Sciences
- Chinese Academy of Agricultural Sciences
- Beijing
- People's Republic of China
- College of Food Science and Technology
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Antimicrobial and antimalarial properties of medicinal plants used by the indigenous tribes of Andaman and Nicobar Islands, India. Microb Pathog 2016; 96:85-8. [PMID: 27174207 DOI: 10.1016/j.micpath.2016.04.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 04/27/2016] [Indexed: 11/23/2022]
Abstract
In this study, methanol extracts of six medicinal plants (Alstonia macrophylla, Claoxylon indicum, Dillenia andamanica, Jasminum syringifolium, Miliusia andamanica and Pedilanthus tithymaloides) traditionally used by Nicobarese tribes of Andaman and Nicobar Islands were studied for antimicrobial and antimalarial activities as well as preliminary photochemical analysis. Plants were collected from Car Nicobar of Andaman and Nicobar Islands and the ethnobotanical data were gathered from traditional healers who inhabit the study area. The methanol extracts were obtained by cold percolation method and the antimicrobial activity was found using agar well diffusion method. Among the plants tested, J. syringifolium, D. andamanica, C. indicum were most active. The antimalarial activity was evaluated against Plasmodium falciparum chloroquine-sensitive MRC-2 isolate. The crude extract of M. andamanica showed excellent antimalarial activity followed by extracts of P. tithymaloides, J. syringifolium and D. andamanica. The chemical injury to erythrocytes was also carried out and it showed that, there were no morphological changes in erythrocytes by the methanol crude extracts. The in vitro antimicrobial and antimalarial activity might be due to the presence of alkaloids, flavonoids, triterpenes, sterols, tannins and saponins in the methanol extracts of tested plants.
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Khyade MS, Kasote DM, Vaikos NP. Alstonia scholaris (L.) R. Br. and Alstonia macrophylla Wall. ex G. Don: A comparative review on traditional uses, phytochemistry and pharmacology. JOURNAL OF ETHNOPHARMACOLOGY 2014; 153:1-18. [PMID: 24486598 DOI: 10.1016/j.jep.2014.01.025] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 01/19/2014] [Accepted: 01/21/2014] [Indexed: 05/25/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Alstonia scholaris (L.) R. Br. and Alstonia macrophylla Wall. ex G. Don are two vital medicinal plant species (family: Apocynaceae). In India, the therapeutic use of Alstonia scholaris has been described in both codified and non-codified drug systems for the treatment of malaria, jaundice, gastrointestinal troubles, cancer and in many other ailments. Other species, Alstonia macrophylla has been used in conventional medicines in Thailand, Malaysia and Philippines as a general tonic, aphrodisiac, anticholeric, antidysentery, antipyretic, emmenagogue, and vulnerary agents. In India, Alstonia macrophylla is used as a substitute for Alstonia scholaris in various herbal pharmaceutical preparations. However, one certainly cannot evaluate the truthfulness of a practice (i.e. in scientific terms). In this article we discuss and summarize comparative data about traditional uses, phytochemistry, pharmacology and toxicity of Alstonia scholaris and Alstonia macrophylla. Moreover, in order to unfold future research opportunities, lacunae in the present knowledge are also highlighted. MATERIALS AND METHODS Literature about Alstonia scholaris and Alstonia macrophylla was collected by using electronic and library search. Additionally, referred books on traditional medicine and ethnopharmacology were also utilized for receiving traditional records about both the plant species. RESULTS Both Alstonia scholaris and Alstonia macrophylla are rich in different types of bioactive alkaloids. So far, broad spectrum of in vitro and in vivo biological and pharmacological activities have been reported to both the species. Amongst them, antimicrobial and anticancer activities were promising. CONCLUSIONS The use of Alstonia macrophylla as a substitute for Alstonia scholaris is not at all justifiable as both the species are distinct from each other in their phytochemistry and pharmacology. Further detail chemical fingerprinting and metabolic studies of these two species are warranted to prevent their mutual adulteration most importantly in the context of commercial preparations.
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Affiliation(s)
- Mahendra S Khyade
- Department of Botany, S. N. Arts, D. J. Malpani Commerce and B.N. Sarda Science College, Sangamner 422605, Maharashtra, India.
| | - Deepak M Kasote
- Department of Pharmaceutical Sciences, Tshwane University of Technology, Private Bag X680, Pretoria 0001, South Africa
| | - Nityanand P Vaikos
- Department of Botany, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, Maharashtra, India
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Subramaniam S, Keerthiraja M, Sivasubramanian A. Synergistic antibacterial action of β-sitosterol-d-glucopyranoside isolated from Desmostachya bipinnata leaves with antibiotics against common human pathogens. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2014. [DOI: 10.1590/0102-695x20142413348] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Cardoso CAL, Coelho RG, Honda NK, Pott A, Pavan FR, Leite CQF. Phenolic compounds and antioxidant, antimicrobial and antimycobacterial activities of Serjania erecta Radlk. (Sapindaceae). BRAZ J PHARM SCI 2013. [DOI: 10.1590/s1984-82502013000400017] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Serjania erecta Radlk.(Sapindaceae) is a medicinal plant traditionally used in Brazil. We assayed the ethanolic extract of leaves and roots against seven microorganisms. The REMA (Resazurin Microtiter Assay) assay was used to measure the biological activity in vitro against Mycobacterium tuberculosis and our results showed moderate activity of the ethanolic extract. On the other hand S. aureus, P. aeruginosa, S. setubal, C. albicans, S. cerevisiae and E. coli revealed that the leaves and roots of S. erecta inhibited the growth of all microorganisms. The ethanolic extracts of leaves and roots showed low values of antioxidant activities. The ethanolic extracts of leaves and roots were analyzed by chromatographic and spectrometric methods. (-)-Epicatechin, kaempferol aglycone and five glycoside derivates were isolated: kaempferol-3-O-α-L-rhamnopyranoside, kaempferol-3-O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranoside from the roots and kaempferol, kaempferol 3,7-di-O-α-L-rhamnopyranoside, vitexin, isovitexin and (-)-epicatechin in the leaves. This is the first chemical study reported in the literature about this specie.
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Affiliation(s)
| | | | | | - Arnildo Pott
- Universidade Federal de Mato Grosso do Sul, Brazil
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Ojha D, Mukherjee H, Ghosh S, Bag P, Mondal S, Chandra N, Mondal K, Samanta A, Chakrabarti S, Chattopadhyay D. Evaluation of anti-infective potential of a tribal folklore Odina wodier
Roxb against some selected microbes and herpes simplex virus associated with skin infection. J Appl Microbiol 2013; 115:1317-28. [DOI: 10.1111/jam.12330] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 07/26/2013] [Accepted: 08/12/2013] [Indexed: 11/26/2022]
Affiliation(s)
- D. Ojha
- CMR Virus Unit; I.D. & B.G. Hospital; Beliaghata Kolkata India
| | - H. Mukherjee
- CMR Virus Unit; I.D. & B.G. Hospital; Beliaghata Kolkata India
| | - S. Ghosh
- Division of Microbiology; Department of Pharmaceutical Technology; Jadavpur University; Kolkata India
| | - P. Bag
- CMR Virus Unit; I.D. & B.G. Hospital; Beliaghata Kolkata India
| | - S. Mondal
- CMR Virus Unit; I.D. & B.G. Hospital; Beliaghata Kolkata India
| | - N.S. Chandra
- CMR Virus Unit; I.D. & B.G. Hospital; Beliaghata Kolkata India
| | - K.C. Mondal
- Department of Microbiology; Vidyasagar University; Medinipur India
| | - A. Samanta
- Division of Microbiology; Department of Pharmaceutical Technology; Jadavpur University; Kolkata India
| | - S. Chakrabarti
- CMR Virus Unit; I.D. & B.G. Hospital; Beliaghata Kolkata India
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Teke GN, Elisée KN, Roger KJ. Chemical composition, antimicrobial properties and toxicity evaluation of the essential oil of Cupressus lusitanica Mill. leaves from Cameroon. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:130. [PMID: 23758765 PMCID: PMC3687683 DOI: 10.1186/1472-6882-13-130] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 06/10/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND The leaves of Cupressus lusitanica Mill. are used in the western highlands of Cameroon for their medicinal property. METHODS The leaves of this species were collected in the West Region of Cameroon in August 2010 and subjected to hydrodistillation to obtain the essential oil. The oil was fractionated using adsorption column chromatography. The chemical composition of this oil and its fractions was analysed by gas chromatography-mass spectrometry (GC-MS). The essential oil and fractions were tested for antimicrobial activity against eight bacterial species and six species of Candida by the agar diffusion method. Macrodilution method was used to determine the minimum inhibition concentrations (MICs) and minimum bactericidal and/or fungicidal concentrations (MBCs and MFCs). The toxicity profile of the oil was studied using Swiss mice and Wistar albino rats. RESULTS Forty-nine compounds were identified in the essential oil. The main components were germacrene D (18.5%), epi-zonarene (8.2%), cis-calamenene (8.2%), terpinen-4-ol (6.3%), linalool (6.0%) and umbellulone (6.0%). Enterococcus faecalis, Proteus mirabilis and Candida albicans were most susceptible to the oil (MICs of 1.25 and 0.16% for bacteria and fungi respectively). The estimated oral LD50 was 6.33 g/kg. There was an increase in sera ALT and AST activities while the blood cells and protein levels decreased in treated animals. CONCLUSION The results obtained from this study support the ethnomedicinal use of C. lusitanica leaf oil in the treatment of whooping cough and skin infections though it should be used with care. This plant oil could be useful in the standardisation of phytomedicine.
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Affiliation(s)
- Gerald Ngo Teke
- Department of Medicine, Faculty of Health Sciences, University of Bamenda, PO Box 39, Bambili, Cameroon
| | - Kemadjou Nana Elisée
- Department of Biochemistry, Faculty of Science, University of Dschang, PO Box 67, Dschang, Cameroon
| | - Kuiate Jules Roger
- Department of Biochemistry, Faculty of Science, University of Dschang, PO Box 67, Dschang, Cameroon
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Ishnava KB, Chauhan JB, Barad MB. Anticariogenic and phytochemical evaluation of Eucalyptus globules Labill. Saudi J Biol Sci 2013; 20:69-74. [PMID: 23961222 PMCID: PMC3730900 DOI: 10.1016/j.sjbs.2012.11.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 11/04/2012] [Accepted: 11/06/2012] [Indexed: 11/24/2022] Open
Abstract
In the present study, in vitro anticariogenic potential of ethyl acetate, hexane and methanol and aqueous extracts of plant leaves of Eucalyptus globules Labill. were evaluated by using four cariogenic bacteria, Lactobacillus acidophilus, Lactobacillus casei, Staphylococcus aureus and Streptococcus mutans. Agar well diffusion method and minimum inhibitory concentration (MIC) were used for this purpose. The ethyl acetate extracted fraction of plant leaves showed good inhibitory effects against all selected bacteria. In Eucalyptus globules, hexane and ethyl acetate extracts found highly effective against, Lactobacillus acidophilus with MIC value of 0.031 and 0.062 mg/mL, respectively. Qualitative phytochemical investigation of above extracts showed the presence of alkaloids, phenolic compounds, steroids, cardiac glycosides and terpenes. Based on the MIC value and bioautography, ethyl acetate of plant leaf was selected for further study. Further investigation on the structure elucidation of the bioactive compound using IR, GC-MS and NMR techniques revealed the presence of alpha-farnesene, a sesquiterpene. Eucalyptus globules plant leaf extracts have great potential as anticariogenic agents that may be useful in the treatment of oral disease.
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Affiliation(s)
- Kalpesh B. Ishnava
- Ashok and Rita Patel Institute of Integrated Studies and Research in Biotechnology and Allied Sciences (ARIBAS), New Vallabh Vidyanagar-388121, Gujarat, India
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Ghosh S, Samanta A, Mandal NB, Bannerjee S, Chattopadhyay D. Evaluation of the wound healing activity of methanol extract of Pedilanthus tithymaloides (L.) Poit leaf and its isolated active constituents in topical formulation. JOURNAL OF ETHNOPHARMACOLOGY 2012; 142:714-722. [PMID: 22683906 DOI: 10.1016/j.jep.2012.05.048] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 05/10/2012] [Accepted: 05/25/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pedilanthus tithymaloides leaves are widely used in Indian medicine to heal wounds, burn, mouth ulcers. However, systematic evaluation of these activities is lacking. Thus, the present study aimed to assesses the wound healing activity of Pedilanthus leaves and its isolated constituents in topical ointment formulation. MATERIALS AND METHODS Bioassay-guided chromatographic fractionation of the methanol extract of leaves resulted in the isolation of 2-(3,4-dihydroxy-phenyl)-5,7-dihydroxy-chromen-4-one and 1, 2-tetradecanediol, 1-(hydrogen sulfate), sodium salt. The ointment formulation of methanol extract (2.5%, 5% w/w) and isolated compounds (0.25% w/w) was prepared and evaluated on excision, incision and dead space wound models in rats. The effects of formulations on wound healing were assessed by the rate of wound closure, period of epithelialization, tensile strength, granulation tissue weight, hydroxyproline content and histopathology. RESULTS Significant wound healing activity was observed with methanol extract and isolated constituents. Topical application of isolated compound ointments caused faster epithelialization, significant wound contraction (95.41%), and better tensile strength (565.33 g) on 16 post-wounding day, while 5% extract showed wound epithelialization with 95.55% contraction on 18th post-wounding day, better than the control group (76.39% on 22 day). The tensile strength of incision wound was significantly increased in extract and compound treated animals. Moreover, in dead space model the extract significantly increased granuloma tissue weight, tensile strength and hydroxyproline content. The tissue histology of ointment treated groups showed complete epithelialization with increased collagenation, compared to the povidone-iodine group. CONCLUSIONS The results validated the traditional use of Pedilanthus tithymaloides for cutaneous wound management.
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Affiliation(s)
- Soma Ghosh
- Division of Microbiology, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
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Bag P, Chattopadhyay D, Mukherjee H, Ojha D, Mandal N, Sarkar MC, Chatterjee T, Das G, Chakraborti S. Anti-herpes virus activities of bioactive fraction and isolated pure constituent of Mallotus peltatus: an ethnomedicine from Andaman Islands. Virol J 2012; 9:98. [PMID: 22624581 PMCID: PMC3430555 DOI: 10.1186/1743-422x-9-98] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 05/24/2012] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Viral infections, particularly the infections caused by herpes simplex virus (HSV), represent one of the most serious public health concerns globally because of their devastating impact. The aim of this study was to evaluate the antiviral potential of methanolic crude extract of an ethnomedicine Mallotus peltatus, its active fraction and pure compound, against HSV-1 F and HSV-2 G. RESULT The cytotoxicity (CC(50), the concentration of 50% cellular toxicity), antiviral effective concentration (EC(50), the concentration required to achieve 50% protection against virus-induced cytopathic effect), plaque reduction and the selectivity index (SI, the ratio of CC(50) and EC(50)) was determined. Results showed that the crude methanolic extract of M. peltatus possessed weak anti-HSV activity. In contrast, the active fraction A and isolated ursolic acid from fraction A exhibited potent antiherpesvirus activity against both HSV-1 (EC(50)= 7.8 and 5.5 μg/ml; SI = 22.3 and 20) and HSV-2 (EC(50)= 8.2 and 5.8 μg/ml, and SI = 21.2 and 18.97). The fraction A and isolated ursolic acid (10 μg/ml) inhibited plaque formation of HSV-1 and HSV-2 at more than 80% levels, with a dose dependent antiviral activity, compared to acyclovir. The time response study revealed that the anti-HSV activity of fraction A and isolated ursolic acid is highest at 2-5 h post-infection. Moreover, the time kinetics study by indirect immunofluorescence assay showed a characteristic pattern of small foci of single fluorescent cells in fraction A- treated virus infected cells at 2 h and 4 h post-infection, suggesting drug inhibited viral dissemination. Further, the PCR study with infected cell cultures treated with fraction A and isolated ursolic acid at various time intervals, failed to show amplification at 48-72 h, like acyclovir treated HSV-infected cells. Moreover, fraction A or isolated ursolic acid showed no interaction in combination with acyclovir. CONCLUSION This study revealed that bioactive fraction A and isolated ursolic acid of M. peltatus has good anti-HSV activity, probably by inhibiting the early stage of multiplication (post-infection of 0-5 h), with SI value of 20, suggesting its potential use as anti-HSV agents.
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Affiliation(s)
- Paromita Bag
- ICMR Virus Unit, ID & BG Hospital, General Block 4, First floor, 57 Dr Suresh Chandra Banerjee Road, Beliaghata, Kolkata, 700010, India
| | - Debprasad Chattopadhyay
- ICMR Virus Unit, ID & BG Hospital, General Block 4, First floor, 57 Dr Suresh Chandra Banerjee Road, Beliaghata, Kolkata, 700010, India
| | - Hemanta Mukherjee
- ICMR Virus Unit, ID & BG Hospital, General Block 4, First floor, 57 Dr Suresh Chandra Banerjee Road, Beliaghata, Kolkata, 700010, India
| | - Durbadal Ojha
- ICMR Virus Unit, ID & BG Hospital, General Block 4, First floor, 57 Dr Suresh Chandra Banerjee Road, Beliaghata, Kolkata, 700010, India
| | - Nilanjan Mandal
- ICMR Virus Unit, ID & BG Hospital, General Block 4, First floor, 57 Dr Suresh Chandra Banerjee Road, Beliaghata, Kolkata, 700010, India
| | - Mamta Chawla Sarkar
- Division of Virology, National Institute of Cholera & Enteric Diseases, Kolkata, India
| | - Tapan Chatterjee
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata, India
| | - Gobardhan Das
- Immunology Group, International Centre for Genetic Engineering and Biotechnology, New Delhi, India
| | - Sekhar Chakraborti
- ICMR Virus Unit, ID & BG Hospital, General Block 4, First floor, 57 Dr Suresh Chandra Banerjee Road, Beliaghata, Kolkata, 700010, India
- Division of Virology, National Institute of Cholera & Enteric Diseases, Kolkata, India
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Inhibition of NO(2), PGE(2), TNF-α, and iNOS EXpression by Shorea robusta L.: An Ethnomedicine Used for Anti-Inflammatory and Analgesic Activity. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:254849. [PMID: 22649472 PMCID: PMC3358043 DOI: 10.1155/2012/254849] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2012] [Revised: 01/30/2012] [Accepted: 01/30/2012] [Indexed: 11/26/2022]
Abstract
This paper is an attempt to evaluate the anti-inflammatory and analgesic activities and the possible mechanism of action of tender leaf extracts of Shorea robusta, traditionally used in ailments related to inflammation. The acetic-acid-induced writhing and tail flick tests were carried out for analgesic activity, while the anti-inflammatory activity was evaluated in carrageenan-and dextran- induced paw edema and cotton-pellet-induced granuloma model. The acetic-acid-induced vascular permeability, erythrocyte membrane stabilization, release of proinflammatory mediators (nitric oxide and prostaglandin E2), and cytokines (tumor necrosis factor-α, and interleukins-1β and -6) from lipopolysaccharide-stimulated human monocytic cell lines were assessed to understand the mechanism of action. The results revealed that both aqueous and methanol extract (400 mg/kg) caused significant reduction of writhing and tail flick, paw edema, granuloma tissue formation (P < 0.01), vascular permeability, and membrane stabilization. Interestingly, the aqueous extract at 40 μg/mL significantly inhibited the production of NO and release of PGE2, TNF-α, IL-1β, and IL-6. Chemically the extract contains flavonoids and triterpenes and toxicity study showed that the extract is safe. Thus, our study validated the scientific rationale of ethnomedicinal use of S. robusta and unveils its mechanism of action. However, chronic toxicological studies with active constituents are needed before its use.
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Ishnava KB, Chauhan JB, Garg AA, Thakkar AM. Antibacterial and phytochemical studies on Calotropis gigantia (L.) R. Br. latex against selected cariogenic bacteria. Saudi J Biol Sci 2012; 19:87-91. [PMID: 23961166 PMCID: PMC3730865 DOI: 10.1016/j.sjbs.2011.10.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 10/02/2011] [Accepted: 10/08/2011] [Indexed: 11/15/2022] Open
Abstract
In vitro antibacterial potential of the chloroform, ethyl acetate, hexane, methanol and aqueous extracts of Calotropis gigantia (L.) R. Br. was evaluated by using five cariogenic bacteria, Actinomyces viscosus, Lactobacillus acidophilus, Lactobacillus casei, Streptococcus mitis and Streptococcus mutans. Agar well diffusion method and minimum inhibitory concentration (MIC) were used for this purpose. The chloroform extracted fraction of latex showed inhibitory effect against S. mutans and L. acidophilus with MIC value of 0.032 and 0.52 mg/mL, respectively. Qualitative investigation on structure elucidation of bioactive compound using IR, NMR and GC-MS techniques revealed the presence of methyl nonanoate, a saturated fatty acid.
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Affiliation(s)
- Kalpesh B. Ishnava
- Ashok and Rita Patel Institute of Integrated Studies and Research in Biotechnology and Allied Sciences (ARIBAS), New Vallabh Vidyanagar 388 121, Gujarat, India
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Bisindole alkaloids and secoiridoids from Alstonia macrophylla Wall. ex G. Don. Fitoterapia 2011; 82:798-804. [PMID: 21601617 DOI: 10.1016/j.fitote.2011.04.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 04/10/2011] [Accepted: 04/23/2011] [Indexed: 01/01/2023]
Abstract
The ethanolic extract from stems of a Thai medicinal plant, Alstonia macrophylla Wall. ex G. Don (Apocynaceae) showed a significant inhibitory effect on acetylcholinesterase (AChE) determined by using Ellman assay. Four compounds i.e., a bisindole alkaloid, macralstonine (1), a new bisindole alkaloid, thungfaine (2), a secoiridoid glycoside, sweroside (3) and a new secoiridoid glycoside, naresuanoside (4) were isolated. Compound 4 showed moderate AChE and butyrylcholinesterase (BChE) inhibitory effects. Interestingly, compound 4 inhibited cell growth on human androgen-sensitive prostate cancer cell line (LNCaP) but no effect on viability of human foreskin fibroblast cells (HF).
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Paira MK, Mondal TK, Ojha D, Slawin AM, Tiekink ER, Samanta A, Sinha C. Structures, redox behavior, antibacterial activity and correlation with electronic structure of the complexes of nickel triad with 3-(2-(alkylthio)phenylazo)-2,4-pentanedione. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.01.049] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Hazra A, Mondal S, Maity A, Naskar S, Saha P, Paira R, Sahu KB, Paira P, Ghosh S, Sinha C, Samanta A, Banerjee S, Mondal NB. Amberlite-IRA-402 (OH) ion exchange resin mediated synthesis of indolizines, pyrrolo [1,2-a] quinolines and isoquinolines: antibacterial and antifungal evaluation of the products. Eur J Med Chem 2011; 46:2132-40. [PMID: 21440339 DOI: 10.1016/j.ejmech.2011.02.066] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2010] [Revised: 02/22/2011] [Accepted: 02/26/2011] [Indexed: 10/18/2022]
Abstract
A number of indolizines and pyrrolo[1,2-a]quinolines/isoquinolines were prepared from phenacyl pyridinium, quinolinium and isoquinolinium salts derived from the reaction of the heterocycles with 2-bromo acetophenone with alkynes and alkenes using amberlite-IRA-402 (OH) ion exchange resin as the base. Antibacterial and antifungal studies were carried out against thirteen bacterial and four fungal strains, which revealed that three derivatives (4a, 4b, 7a) out of fifteen are effective against all the thirteen strains and one derivative, 10, showed dual antibactericidal and antifungal efficacy.
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Affiliation(s)
- Abhijit Hazra
- Department Of Chemistry, Indian Institute of Chemical Biology, Council of Scientific & Industrial Research, 4, Raja S. C. Mullick Road, Jadavpur, Kolkata-700032, India
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Abstract
AbstractBacterial resistance to antibiotics is increasing at an alarming rate and many commonly used antibiotics are no longer effective. Thus, there is considerable interest in investigating novel antibacterial compounds, such as the plant-derived pentacyclic triterpenoids, including oleanolic acid (OA), ursolic acid (UA) and their derivatives. These compounds can be isolated from many medicinal and crop plants and their antibacterial, antiviral, antiulcer and anti-inflammatory effects are well documented. OA and UA are active against many bacterial species, particularly Gram-positive species, including mycobacteria. They inhibit bacterial growth and survival, and the spectrum of minimal inhibitory concentration (MIC) values is very broad. In addition, OA, UA and their derivatives display potent antimutagenic activity. Studies to identify the cellular targets and molecular mechanisms of OA and UA action were initiated a few years ago and it has already been demonstrated that both acids influence bacterial gene expression, the formation and maintenance of biofilms, cell autolysis and peptidoglycan turnover. Before these compounds can be used clinically as antimicrobial agents, further extensive studies are required to determine their cytotoxicity and the optimum mode of their application.
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Parveen M, Khanam Z, Ali A, Ahmad SM. A novel antimicrobial flavonoidic glycoside from the leaves of Alstonia macrophylla Wall ex A. DC (Apocynaceae). CHINESE CHEM LETT 2010. [DOI: 10.1016/j.cclet.2009.11.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Sasidharan S, Zuraini Z, Yoga Latha L, Sangetha S, Suryani S. Antimicrobial activities of Psophocarpus tetragonolobus (L.) DC extracts. Foodborne Pathog Dis 2008; 5:303-9. [PMID: 18767977 DOI: 10.1089/fpd.2007.0078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Consecutive chloroform, ethanol, and ethyl acetate partitions of extracts from winged bean [Psophocarpus tetragonolobus (L.) DC] root, stem, leaf, and pod extracts were tested for their antimicrobial activity against 19 microbial species, including 11 bacterial pathogens, four yeasts, and four molds using the disk diffusion assay technique. The pod extract was found to be most effective against all of the tested organisms, followed by the stem, root, and leaf extracts, and the ethanol fraction showed the most significant (p < 0.05) antimicrobial activity against all of the tests among three soluble fractions of extract, followed by the ethyl acetate and chloroform fractions. The minimum inhibitory concentrations (MICs) of extracts determined by the broth dilution method ranged from 1.25 to 10.0 mg/mL. The MIC of ethanol fraction of pod extracts was the lowest by comparison with the other two extracts. The MIC for fungi was at or below 2.5 mg/mL and for bacteria was at or above 2.5 mg/mL.
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Affiliation(s)
- S Sasidharan
- School of Biological Sciences, University Sains Malaysia, Minden, Pulau Pinang, Malaysia.
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Chattopadhyay D, Das S, Mandal AB, Arunachalam G, Bhattacharya SK. Evaluation of analgesic and antiinflammatory activity of Ophiorrhiza nicobarica, an ethnomedicine from Nicobar Islands, India. ACTA ACUST UNITED AC 2007. [DOI: 10.3742/opem.2007.7.4.395] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Cira LA, González GA, Torres JC, Pelayo C, Gutiérrez M, Ramírez J. Heterologous expression of Fusarium oxysporum tomatinase in Saccharomyces cerevisiae increases its resistance to saponins and improves ethanol production during the fermentation of Agave tequilana Weber var. azul and Agave salmiana must. Antonie van Leeuwenhoek 2007; 93:259-66. [PMID: 17896184 DOI: 10.1007/s10482-007-9200-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2007] [Accepted: 09/06/2007] [Indexed: 10/22/2022]
Abstract
This paper describes the effect of the heterologous expression of tomatinase from Fusarium oxysporum f. sp lycopersici in Saccharomyces cerevisiae. The gene FoTom1 under the control of the S. cerevisiae phosphoglycerate kinase (PGK1) promoter was cloned into pYES2. S. cerevisiae strain Y45 was transformed with this vector and URA3 transformant strains were selected for resistance to alpha-tomatine. Two transformants were randomly selected for further study (designated Y45-1 and Y45-2). Control strain Y45 was inhibited at 50 muM alpha-tomatine, in contrast, transformants Y45-1 and Y45-2 did not show inhibition at 200 muM. Tomatinase activity was detected by HPLC monitoring tomatine disappearance and tomatidine appearance in the supernatants of culture medium. Maximum tomatinase activity was observed in the transformants after 6 h, remaining constant during the following 24 h. No tomatinase activity was detected in the parental strain. Moreover, the transformants were able to grow and produce ethanol in a mix of Agave tequilana Weber var. azul and Agave salmiana must, contrary to the Y45 strain which was unable to grow and ferment under these conditions.
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Affiliation(s)
- Luis Alberto Cira
- Centro de Investigación y Asistenta Tecnológica del Estado de Jalisco (CIATEJ), Unidad de Biotecnología, Av. Normalistas 800, Col. Colinas de la Normal, Guadalajara, Jalisco, Mexico
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Taviano MF, Miceli N, Monforte MT, Tzakou O, Galati EM. Ursolic acid plays a role in Nepeta sibthorpii Bentham CNS depressing effects. Phytother Res 2007; 21:382-5. [PMID: 17236171 DOI: 10.1002/ptr.2076] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The sedative, anticonvulsant and analgesic activity of ursolic acid, a terpenoid bioassay-isolated from Nepeta sibthorpii Bentham, was evaluated in mice. The oral administration of ursolic acid (2.3 mg/kg) produced a significant depressant effect on CNS by reducing spontaneous motor activity and the number and lethality of pentylenetetrazol (PTZ)-induced seizures. Two models of nociception, the writhing test and the hot plate test, were also used to examine the analgesic effect of ursolic acid. At a dose of 2.3 mg/kg, ursolic acid caused an inhibition of acetic acid-induced abdominal constriction, but was inactive in the hot plate test. Treatment at a higher dose (20 mg/kg) significantly increased the reaction time in the hot plate test. This effect, reversed by naloxone, evidently involves opioid receptors, but the analgesic activity of ursolic acid may be related also to the antiinflammatory and antioxidant properties of this compound.
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Affiliation(s)
- M F Taviano
- Pharmaco-Biological Department, School of Pharmacy, University of Messina, Vill. SS. Annunziata, 98168 Messina, Italy
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Silva E, Souza J, Rogez H, Rees J, Larondelle Y. Antioxidant activities and polyphenolic contents of fifteen selected plant species from the Amazonian region. Food Chem 2007. [DOI: 10.1016/j.foodchem.2006.02.055] [Citation(s) in RCA: 145] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Zhu X, Zhang H, Lo R, Lu Y. Antimicrobial Activities ofCynara scolymusL. Leaf, Head, and Stem Extracts. J Food Sci 2006. [DOI: 10.1111/j.1365-2621.2005.tb07106.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Chattopadhyay D, Arunachalam G, Mandal AB, Bhattacharya SK. Dose-Dependent Therapeutic Antiinfectives from Ethnomedicines of Bay Islands. Chemotherapy 2006; 52:151-7. [PMID: 16636538 DOI: 10.1159/000092859] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2004] [Accepted: 09/05/2005] [Indexed: 11/19/2022]
Abstract
BACKGROUND The methanol extract of Ophirrhiza nicobarica, Alstonia macrophylla and Mallotus peltatus, ethnomedicines of Little Andaman, were investigated for antiinfective, antiinflammatory and antioxidant activities. METHODS Toxicity was determined in cells and in an animal model. Antiviral, antibacterial and antifungal activity was determined by plaque reduction, disc diffusion and agar dilution methods. The antiinflammatory and antioxidant activities were also studied. RESULTS O. nicobarica at 300 microg ml(-1) showed anti-HSV activity while M. peltatus and A. macrophylla showed antibacterial activity at 64-1,000 microg ml(-1). Both extracts showed significant dose-dependent antiinflammatory and antioxidant activity at nontoxic concentrations. CONCLUSION The alkaloid, flavonoid and beta-sitosterol isolated from bioactive parts had a dose-dependent therapeutic efficacy, justifying their use. Further study is required to know the mechanism of action.
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Chattopadhyay D, Dungdung SR, Mandal AB, Majumder GC. A potent sperm motility-inhibiting activity of bioflavonoids from an ethnomedicine of Onge, Alstonia macrophylla Wall ex A. DC, leaf extract. Contraception 2005; 71:372-8. [PMID: 15854639 DOI: 10.1016/j.contraception.2004.11.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2004] [Accepted: 11/05/2004] [Indexed: 11/26/2022]
Abstract
The methanol extract (ME) and the n-butanol fractions of methanolic extract of Alstonia macrophylla Wall ex A. DC leaves were investigated on the forward motility (FM) of mammalian (goat and human) spermatozoa. The ME at 600 microg mL-1 as well as fraction B at 100 microg mL-1 concentrations showed marked inhibition of sperm FM in both goat and human species when tested by microscopic and spectrophotometric methods. Approximately 60-80% of the goat spermatozoa lost their FM when treated with 600 microg mL-1 of ME and 100 microg mL-1 of fraction B. At 100 microg mL-1 concentration, fraction B showed 90% loss of FM in human spermatozoa, while fraction B at 400 microg mL-1 concentration showed complete inhibition of sperm FM at 0 min. The inhibitory activity of fraction B increases with increasing concentration in a dose-dependent manner. Phytochemical study of the extract revealed that the leaf contains tannins, flavonoids, sterols, triterpenes, alkaloids and reducing sugars. Further fractionation and purification of the bioactive n-butanol part of ME showed the presence of ursolic acid (fraction B), beta-sitosterol (fraction A), beta-sitosterol glucoside and a mixture of minor compounds (fraction C, detected on thin-layer chromatography). The results reveal that fraction B (ursolic acid), a pentacyclic triterpene, has the potential of sperm motility inhibition and can serve as a topical vaginal contraceptive.
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Affiliation(s)
- Debprasad Chattopadhyay
- ICMR Virus Unit, Infectious Diseases and Beliaghata General Hospital, Beliaghata, Kolkata 700010, India.
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Chattopadhyay D, Arunachalam G, Ghosh L, Mandal AB. CNS activity of Alstonia macrophylla leaf extracts: an ethnomedicine of Onge of Bay Islands. Fitoterapia 2004; 75:673-82. [PMID: 15567243 DOI: 10.1016/j.fitote.2004.08.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2003] [Accepted: 08/24/2004] [Indexed: 11/26/2022]
Abstract
Methanol extract at 100-200 mg/kg p.o. and major nonpolar fraction B at 50 mg/kg of Alstonia macrophylla leaves caused a significant reduction in spontaneous activity, remarkable decrease in exploratory behavioural pattern, a reduction in muscle relaxant activity and also significantly potentiated phenobarbitone sodium-induced sleeping time. The phytochemical study of crude leaf extract revealed the presence of tannin, triterpenoid, flavonoid, sterol, alkaloid and reducing sugars. Further fractionation and purification of the n-butanol part of methanol extract yielded fraction A, fraction B and fraction C along with some minor fatty acids as the major compounds.
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Affiliation(s)
- Debprasad Chattopadhyay
- ICMR Virus Unit Calcutta, Infectious Diseases and Beliaghata General Hospital, GB 4, 1st Floor, 57, Dr Suresh Banerjee Road, Kolkata 700 010, India.
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Zhu X, Zhang H, Lo R. Phenolic compounds from the leaf extract of artichoke (Cynara scolymus L.) and their antimicrobial activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2004; 52:7272-8. [PMID: 15563206 DOI: 10.1021/jf0490192] [Citation(s) in RCA: 209] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A preliminary antimicrobial disk assay of chloroform, ethyl acetate, and n-butanol extracts of artichoke (Cynara scolymus L.) leaf extracts showed that the n-butanol fraction exhibited the most significant antimicrobial activities against seven bacteria species, four yeasts, and four molds. Eight phenolic compounds were isolated from the n-butanol soluble fraction of artichoke leaf extracts. On the basis of high-performance liquid chromatography/electrospray ionization mass spectrometry, tandem mass spectrometry, and nuclear magnetic resonance techniques, the structures of the isolated compounds were determined as the four caffeoylquinic acid derivatives, chlorogenic acid (1), cynarin (2), 3,5-di-O-caffeoylquinic acid (3), and 4,5-di-O-caffeoylquinic acid (4), and the four flavonoids, luteolin-7-rutinoside (5), cynaroside (6), apigenin-7-rutinoside (7), and apigenin-7-O-beta-D-glucopyranoside (8), respectively. The isolated compounds were examined for their antimicrobial activities on the above microorganisms, indicating that all eight phenolic compounds showed activity against most of the tested organisms. Among them, chlorogenic acid, cynarin, luteolin-7-rutinoside, and cynaroside exhibited a relatively higher activity than other compounds; in addition, they were more effective against fungi than bacteria. The minimum inhibitory concentrations of these compounds were between 50 and 200 microg/mL.
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Affiliation(s)
- Xianfeng Zhu
- Research Center for Eco-Environmental Sciences and Graduate School, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China
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Chandrasekaran M, Venkatesalu V. Antibacterial and antifungal activity of Syzygium jambolanum seeds. JOURNAL OF ETHNOPHARMACOLOGY 2004; 91:105-108. [PMID: 15036477 DOI: 10.1016/j.jep.2003.12.012] [Citation(s) in RCA: 116] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2002] [Revised: 11/26/2003] [Accepted: 12/01/2003] [Indexed: 05/24/2023]
Abstract
The water and methanolic extracts of Syzygium jambolanum seeds were examined for antibacterial and antifungal activity in vitro using the disc diffusion method, minimum inhibitory concentration, minimum bactericidal concentration and minimum fungicidal concentration. Activity against gram positive bacteria (Bacillus subtilis, Staphylococcus aureus), gram negative bacteria (Salmonella typhimurium, Pseudomonas aeruginosa, Klebsiella pneumoniae and Escherichia coli) and fungal strains (Candida albicans, Cryptococcus neoformans, Aspergillus flavus, Aspergillus fumigatus, Aspergillus niger, Rhizopus sp., Trichophyton rubrum, Trichophyton mentagrophytes and Microsporum gypseum) is discussed.
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Affiliation(s)
- M Chandrasekaran
- Department of Botany, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
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Chattopadhyay D, Arunachalam G, Mandal SC, Bhadra R, Mandal AB. CNS activity of the methanol extract of Mallotus peltatus (Geist) Muell Arg. leaf: an ethnomedicine of Onge. JOURNAL OF ETHNOPHARMACOLOGY 2003; 85:99-105. [PMID: 12576208 DOI: 10.1016/s0378-8741(02)00379-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The aim of the present study was to investigate several neuropharmacological effects of the methanol extract and different fractions of Mallotus peltatus (Geist) Muell Arg. var acuminatus (Euphorbiaceae) leaves in Wistar albino rats and Swiss albino mice. General behavior, exploratory behavior, muscle relaxant activity and phenobarbitone sodium-induced sleeping time were studied. The results revealed that the crude extract at 200-300 mg kg(-1) p.o. and its fractions A and B at 50 mg kg(-1) caused a significant reduction in spontaneous activity (general behavioral profile), remarkable decrease in exploratory behavioral pattern (Y-maze and head dip tests), a reduction in muscle relaxant activity (rotarod, 30 degrees inclined screen and traction tests), and also significantly potentiated phenobarbitone sodium-induced sleeping time. The phytochemical study of crude leaf extract revealed the presence of tannin, triterpenoid, flavonoid, sterol, alkaloid and reducing sugar. Further fractionation and purification yielded two major fractions A (ursolic acid) and B (beta-sitosterol) with some fatty acids as the major compounds. The psychopharmacological activity of the crude leaf extracts appeared to be either due to fraction A (50 mg kg(-1)) or a combination of fractions A and B (50 mg kg(-1)) along with some fatty acids present in the n-butanol part of methanol extract of M. peltatus leaf (MEMPL).
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Affiliation(s)
- Debprasad Chattopadhyay
- ICMR Virus Unit Calcutta, Infectious Diseases & Beliaghata General Hospital, GB 4, 1st Floor, 57 Dr. Suresh Chandra Banerjee Road, Kolkata 700 010, India.
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Chattopadhyay D, Arunachalam G, Mandal AB, Mandal SC. Evaluation of antipyretic activity of leaf extracts of Mallotus peltatus (Geist) Muell. arg. var acuminatus: a folk medicine. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2002; 9:727-730. [PMID: 12587693 DOI: 10.1078/094471102321621331] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A study was carried out to evaluate the anti-pyretic potential of the methanol extract of Mallotus peltatus (Geist) Muell. Arg. var acuminatus leaf, a folk medicine of Onge tribes of Bay Islands, on normal body temperature and yeast-induced pyrexia in Wister albino rats. The leaf extract at oral doses of 100, 200 and 300 mg kg(-1), p.o., showed significant reduction in normal body temperature and yeast-provoked elevated temperature in a dose-dependent manner and the anti-pyretic effect was comparable to that of standard anti-pyretic agent paracetamol (150 mg kg(-1), p.o.). The effect also extended up to 5 hours after the drug administration.
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Affiliation(s)
- D Chattopadhyay
- ICMR Virus Unit Calcutta, Infectious Diseases & Beliaghata General Hospital, Kolkata, India.
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Chattopadhyay D, Arunachalam G, Mandal AB, Sur TK, Mandal SC, Bhattacharya SK. Antimicrobial and anti-inflammatory activity of folklore: Mallotus peltatus leaf extract. JOURNAL OF ETHNOPHARMACOLOGY 2002; 82:229-237. [PMID: 12242000 DOI: 10.1016/s0378-8741(02)00165-4] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Since ages Mallotus peltatus (Geist) Muell. Arg. var acuminatus (Euphorbiaceae) leaf and stem bark is used in folk medicine to cure intestinal ailments and skin infections. In several intestinal ailments, localized inflammation is of common occurrence and hence we have evaluated the antimicrobial as well as anti-inflammatory activity of M. peltatus leaf extract. The crude methanol extract of M. peltatus leaves was found to be active against Staphylococcus aureus, Staphylococcus saprophyticus, Streptococcus faecalis, Bacillus subtilis, Escherichia coli and Proteus mirabilis and the dermatophytic fungi Microsporum gypseum. The minimum inhibitory concentration (MIC) ranges from 128 to 2000 microg ml(-1) for bacteria and 128 mg ml(-1) for fungi, while the minimum bactericidal concentration (MBC) was 2-4-fold higher than MIC. The methanol-water fraction of the extract showed similar activity against Staphylococcus, Streptococcus, Bacillus and Proteus isolates. The anti-inflammatory activity of the extract against carrageenan (acute model) and dextran-induced (subacute model) rat paw oedema and cotton pellet-induced granuloma (chronic model) in rats were studied using indomethacin (10 mg kg(-1)), a nonsteroid anti-inflammatory drug, as standard. The methanol extract at 200 and 400 mg kg(-1), and the n-butanol fractions A and B at 25 mg kg(-1), exhibited significant anti-inflammatory activity in Albino rats, compared with indomethacin. Phytochemical study revealed the presence of tannins, saponins, terpenoids, steroids and reducing sugars in the crude extract while the n-butanol fractions showed the presence of ursolic acid, beta-sitosterol and some fatty acids as major compounds. Further study with fractions showed that the antibacterial and anti-inflammatory activity is due to either fraction A (ursolic acid) alone or the combination of fractions A and B (beta-sitosterol and fatty acids) of the extract.
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Affiliation(s)
- Debprasad Chattopadhyay
- ICMR Virus Unit Calcutta, I.D. and B.G. Hospital, GB 4, 57 Dr. Suresh Chandra Banerjee Road, Beliaghata, Kolkata, India.
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Arunachalam G, Chattopadhyay D, Chatterjee S, Mandal AB, Sur TK, Mandal SC. Evaluation of anti-inflammatory activity of Alstonia macrophylla Wall ex A. DC. leaf extract. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2002; 9:632-635. [PMID: 12487327 DOI: 10.1078/094471102321616445] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Methanolic extract of dried leaves of Alstonia macrophylla Wall ex A. DC. and its fractions were investigated for its anti-inflammatory activity. The extract at a concentration of 200 mg kg(-1) and 400 mg kg(-1), p.o. and its fractions at 25 mg kg(-1) and 50 mg kg(-1), p.o. showed the significant dose dependent antiinflammatory activity in carrageenan and dextran-induced rats hind paw edema (acute models) as well as in cotton pellet-induced granuloma (chronic model) in rats. Anti-inflammatory activity of the tested extract and its fractions was comparable with that of the standard drug Indomethacin (10 mg kg(-1)).
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Affiliation(s)
- G Arunachalam
- ICMR Virus Unit Calcutta, I.D. & B.G. Hospital, Beliaghata, Kolkata, India
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