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Commercial Essential Oils as Potential Antimicrobials to Treat Skin Diseases. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:4517971. [PMID: 28546822 PMCID: PMC5435909 DOI: 10.1155/2017/4517971] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 10/09/2016] [Indexed: 01/22/2023]
Abstract
Essential oils are one of the most notorious natural products used for medical purposes. Combined with their popular use in dermatology, their availability, and the development of antimicrobial resistance, commercial essential oils are often an option for therapy. At least 90 essential oils can be identified as being recommended for dermatological use, with at least 1500 combinations. This review explores the fundamental knowledge available on the antimicrobial properties against pathogens responsible for dermatological infections and compares the scientific evidence to what is recommended for use in common layman's literature. Also included is a review of combinations with other essential oils and antimicrobials. The minimum inhibitory concentration dilution method is the preferred means of determining antimicrobial activity. While dermatological skin pathogens such as Staphylococcus aureus have been well studied, other pathogens such as Streptococcus pyogenes, Propionibacterium acnes, Haemophilus influenzae, and Brevibacterium species have been sorely neglected. Combination studies incorporating oil blends, as well as interactions with conventional antimicrobials, have shown that mostly synergy is reported. Very few viral studies of relevance to the skin have been made. Encouragement is made for further research into essential oil combinations with other essential oils, antimicrobials, and carrier oils.
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Marqués-Calvo MS, Codony F, Agustí G, Lahera C. Visible light enhances the antimicrobial effect of some essential oils. Photodiagnosis Photodyn Ther 2016; 17:180-184. [PMID: 27965057 DOI: 10.1016/j.pdpdt.2016.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/25/2016] [Accepted: 12/02/2016] [Indexed: 11/24/2022]
Abstract
The photodisinfection is a topical, broad spectrum antimicrobial technology, targeting bacteria, virus, fungi, and protozoa effective for single cells as for biofilms. Natural molecules have been studied less than synthetic agents in the process but they are currently receiving great interest. Therefore, the aim of this study is to evaluate for the first time if non-coherent blue and red light enhances the antimicrobial activity of some essential oils when standard strains for antibiotic or fungicide tests are enlightened in vitro. Staphylococcus epidermidis, Pseudomonas aeruginosa and Candida albicans collection strains were irradiated with monochromatic visible light from light emitting diodes in the presence of 5% and 0.5% eucalyptus (Eucalyptus globulus), clove (Eugenia caryophyllata), and thyme (Thymus vulgaris) essential oils. Microbial levels were measured by plate count on culture media. In this preliminary report, the results differ according to the kind and concentration of antimicrobial oils, the wavelength of light, and the prokaryotic or eukaryotic microorganism. The results support the idea that mainly blue light enhances the innate antimicrobial activity of the essential oils, especially phenols, and could offer a very efficient and natural way to combat microorganisms in several industries and medical applications (cutaneous and oral infections, medical textiles, foodstuffs and fruit surface, etc.).
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Affiliation(s)
- María Soledad Marqués-Calvo
- Departament d'Òptica i Optometria, Universitat Politècnica de Catalunya-Barcelona Tech, Rambla Sant Nebridi 22, 08222-Terrassa, Barcelona, Spain.
| | - Francesc Codony
- GenIUL, Rambla Sant Nebridi 22, 08222-Terrassa, Barcelona, Spain
| | - Gemma Agustí
- GenIUL, Rambla Sant Nebridi 22, 08222-Terrassa, Barcelona, Spain
| | - Carlos Lahera
- Departament d'Òptica i Optometria, Universitat Politècnica de Catalunya-Barcelona Tech, Rambla Sant Nebridi 22, 08222-Terrassa, Barcelona, Spain
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Gottardi D, Bukvicki D, Prasad S, Tyagi AK. Beneficial Effects of Spices in Food Preservation and Safety. Front Microbiol 2016; 7:1394. [PMID: 27708620 PMCID: PMC5030248 DOI: 10.3389/fmicb.2016.01394] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 08/23/2016] [Indexed: 01/04/2023] Open
Abstract
Spices have been used since ancient times. Although they have been employed mainly as flavoring and coloring agents, their role in food safety and preservation have also been studied in vitro and in vivo. Spices have exhibited numerous health benefits in preventing and treating a wide variety of diseases such as cancer, aging, metabolic, neurological, cardiovascular, and inflammatory diseases. The present review aims to provide a comprehensive summary of the most relevant and recent findings on spices and their active compounds in terms of targets and mode of action; in particular, their potential use in food preservation and enhancement of shelf life as a natural bioingredient.
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Affiliation(s)
- Davide Gottardi
- Department of Agricultural and Food Sciences, Alma Mater Studiorum, University of BolognaCesena, Italy
| | - Danka Bukvicki
- Faculty of Biology, Institute of Botany and Botanical Garden “Jevremovac”, University of BelgradeBelgrade, Serbia
| | - Sahdeo Prasad
- Division of Cancer Medicine, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
| | - Amit K. Tyagi
- Department of Agricultural and Food Sciences, Alma Mater Studiorum, University of BolognaCesena, Italy
- Division of Cancer Medicine, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer CenterHouston, TX, USA
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Chemical Composition and Antibacterial Activity of Essential Oils of Tagetes minuta (Asteraceae) against Selected Plant Pathogenic Bacteria. Int J Microbiol 2016; 2016:7352509. [PMID: 27721831 PMCID: PMC5046036 DOI: 10.1155/2016/7352509] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Accepted: 08/18/2016] [Indexed: 12/29/2022] Open
Abstract
The objective of this study was to determine the chemical composition and antibacterial activity of essential oils (EOs) of Tagetes minuta against three phytopathogenic bacteria Pseudomonas savastanoi pv. phaseolicola, Xanthomonas axonopodis pv. phaseoli, and Xanthomonas axonopodis pv. manihotis. The essential oils were extracted using steam distillation method in a modified Clevenger-type apparatus while antibacterial activity of the EOs was evaluated by disc diffusion method. Gas chromatography coupled to mass spectrometry (GC/MS) was used for analysis of the chemical profile of the EOs. Twenty compounds corresponding to 96% of the total essential oils were identified with 70% and 30% of the identified components being monoterpenes and sesquiterpenes, respectively. The essential oils of T. minuta revealed promising antibacterial activities against the test pathogens with Pseudomonas savastanoi pv. phaseolicola being the most susceptible with mean inhibition zone diameters of 41.83 and 44.83 mm after 24 and 48 hours, respectively. The minimum inhibitory concentrations and minimum bactericidal concentrations of the EOs on the test bacteria were in the ranges of 24-48 mg/mL and 95-190 mg/mL, respectively. These findings provide a scientific basis for the use of T. minuta essential oils as a botanical pesticide for management of phytopathogenic bacteria.
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Phytochemical Profile and Evaluation of the Biological Activities of Essential Oils Derived from the Greek Aromatic Plant Species Ocimum basilicum, Mentha spicata, Pimpinella anisum and Fortunella margarita. Molecules 2016; 21:molecules21081069. [PMID: 27537869 PMCID: PMC6274325 DOI: 10.3390/molecules21081069] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 08/02/2016] [Accepted: 08/10/2016] [Indexed: 12/31/2022] Open
Abstract
Natural products, known for their medicinal properties since antiquity, are continuously being studied for their biological properties. In the present study, we analyzed the composition of the volatile preparations of essential oils of the Greek plants Ocimum basilicum (sweet basil), Mentha spicata (spearmint), Pimpinella anisum (anise) and Fortunella margarita (kumquat). GC/MS analyses revealed that the major components in the essential oil fractions, were carvone (85.4%) in spearmint, methyl chavicol (74.9%) in sweet basil, trans-anethole (88.1%) in anise, and limonene (93.8%) in kumquat. We further explored their biological potential by studying their antimicrobial, antioxidant and antiproliferative activities. Only the essential oils from spearmint and sweet basil demonstrated cytotoxicity against common foodborne bacteria, while all preparations were active against the fungi Saccharomyces cerevisiae and Aspergillus niger. Antioxidant evaluation by DPPH and ABTS radical scavenging activity assays revealed a variable degree of antioxidant potency. Finally, their antiproliferative potential was tested against a panel of human cancer cell lines and evaluated by using the sulforhodamine B (SRB) assay. All essential oil preparations exhibited a variable degree of antiproliferative activity, depending on the cancer model used, with the most potent one being sweet basil against an in vitro model of human colon carcinoma.
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Kavoosi G, Amirghofran Z. Chemical composition, radical scavenging and anti-oxidant capacity of Ocimum Basilicum essential oil. JOURNAL OF ESSENTIAL OIL RESEARCH 2016. [DOI: 10.1080/10412905.2016.1213667] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gholamreza Kavoosi
- Institute of Biotechnology, Faculty of Agriculture, Shiraz University, Shiraz, Iran
| | - Zahra Amirghofran
- Department of Immunology, Autoimmune Disease Research Center and Medicinal and Natural Products Chemistry Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Jaradat NA, Ayesh OI, Anderson C. Ethnopharmacological survey about medicinal plants utilized by herbalists and traditional practitioner healers for treatments of diarrhea in the West Bank/Palestine. JOURNAL OF ETHNOPHARMACOLOGY 2016; 182:57-66. [PMID: 26883246 DOI: 10.1016/j.jep.2016.02.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 02/09/2016] [Accepted: 02/12/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Folk herbal medicine knowledge and its utilization by aboriginal cultures are not only useful for conservation of cultural traditions and biodiversity, but also useful for community healthcare and drug discovery in the present and in the future. AIM OF THE STUDY Using a semi-structured questionnaire, an ethnopharmacological survey of medicinal plants used for treatment of diarrhea in the West Bank/Palestine was investigated. RESULTS Information about fifty medicinal plants used for treatment of diarrhea, including the names of plants, parts used, mode and methods of preparation was obtained from 100 traditional healers and herbalists. This research is the first scientific work in the Middle East to collect data about plants used by traditional healers for treatments of diarrhea and their evidence based effects against this disease. The fidelity levels were 97% for Salvia fruticosa, Teucrium polium and Musa paradisiaca, 95% for Camellia sinensis and Aegle marmelos, 79% for Oryza sativa and Solanum tuberosum, 77% for Quercus boissieri, 66% for Psidium guajava, 56% for Anthemis palestina, 54% for Solanum nigrum and 52% for Juglans regia while the highest use and choice values were for S. fruticosa, T. polium and M. paradisiaca as well as the factor of informant's consensus for medicinal plants used for treatment of diarrhea was 0.505.The leaves were the most commonly used parts, followed by fruits, roots and rhizomes, while decoctions and infusions are the preferred methods of preparation. CONCLUSIONS The Palestinian traditional medicine is rich with herbal remedies for treatment of diarrhea in comparison with other countries, but most of these herbal remedies lack standard in-vitro and in-vivo evaluations to establish their antidiarrheal effects. Therefore, the information obtained can serve as a basis for further phytochemical and pharmacological studies to determine their efficacy and safety which might contribute to a better integration of Palestinian traditional medicine into the national health system in the future.
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Affiliation(s)
- Nidal Amin Jaradat
- Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, P.O. Box 7, Nablus, Palestine.
| | - Ola Ibrahim Ayesh
- Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, P.O. Box 7, Nablus, Palestine
| | - Cynthia Anderson
- English Language Center, An-Najah National University, P.O. Box 7, Nablus, Palestine
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Raina P, M. D, C.V. C, Agarwal A, Wagh N, Kaul-Ghanekar R. Comparative analysis of anti-inflammatory activity of aqueous and methanolic extracts of Ocimum basilicum (basil) in RAW264.7, SW1353 and human primary chondrocytes in respect of the management of osteoarthritis. J Herb Med 2016. [DOI: 10.1016/j.hermed.2016.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Chenni M, El Abed D, Rakotomanomana N, Fernandez X, Chemat F. Comparative Study of Essential Oils Extracted from Egyptian Basil Leaves (Ocimum basilicum L.) Using Hydro-Distillation and Solvent-Free Microwave Extraction. Molecules 2016; 21:E113. [PMID: 26797599 PMCID: PMC6273689 DOI: 10.3390/molecules21010113] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 01/10/2016] [Accepted: 01/15/2016] [Indexed: 02/07/2023] Open
Abstract
Solvent-free microwave extraction (SFME) and conventional hydro-distillation (HD) were used for the extraction of essential oils (EOs) from Egyptian sweet basil (Ocimum basilicum L.) leaves. The two resulting EOs were compared with regards to their chemical composition, antioxidant, and antimicrobial activities. The EO analyzed by GC and GC-MS, presented 65 compounds constituting 99.3% and 99.0% of the total oils obtained by SFME and HD, respectively. The main components of both oils were linalool (43.5% SFME; 48.4% HD), followed by methyl chavicol (13.3% SFME; 14.3% HD) and 1,8-cineole (6.8% SFME; 7.3% HD). Their antioxidant activity were studied with the 2,2-diphenyl-1-picrylhydrazyl (DPPH•) radical scavenging method. The heating conditions effect was evaluated by the determination of the Total Polar Materials (TPM) content. The antimicrobial activity was investigated against five microorganisms: two Gram-positive bacteria, Staphylococcus aureus and Bacillus subtilis, two Gram-negative bacteria, Escherichia coli and Pseudomonas aeruginosa, and one yeast, Candida albicans. Both EOs showed high antimicrobial, but weak antioxidant, activities. The results indicated that the SFME method may be a better alternative for the extraction of EO from O. basilicum since it could be considered as providing a richer source of natural antioxidants, as well as strong antimicrobial agents for food preservation.
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Affiliation(s)
- Mohammed Chenni
- Laboratoire de Chimie Fine, Département de Chimie, Faculté des Sciences Exactes et Appliquées, Université d'Oran 1 Ahmed Ben Bella, B.P. 1524, El M'Naouer, Oran 31000, Algeria.
| | - Douniazad El Abed
- Laboratoire de Chimie Fine, Département de Chimie, Faculté des Sciences Exactes et Appliquées, Université d'Oran 1 Ahmed Ben Bella, B.P. 1524, El M'Naouer, Oran 31000, Algeria.
| | - Njara Rakotomanomana
- GREEN Extraction Team, INRA, UMR 408, Université d'Avignon et des Pays du Vaucluse, Avignon 84000, France.
| | - Xavier Fernandez
- Institut de Chimie de Nice, UMR 7272, Université de Nice-Sophia Antipolis/CNRS, Parc Valrose, Nice 06108, France.
| | - Farid Chemat
- GREEN Extraction Team, INRA, UMR 408, Université d'Avignon et des Pays du Vaucluse, Avignon 84000, France.
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In vitro evaluation of anti-diabetic activity and cytotoxicity of chemically analysed Ocimum basilicum extracts. Food Chem 2015; 196:1066-74. [PMID: 26593590 DOI: 10.1016/j.foodchem.2015.10.044] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 06/21/2015] [Accepted: 10/11/2015] [Indexed: 12/26/2022]
Abstract
The aim of this study was to evaluate the role of glucose transporter-4 (GLUT4) in the anti-diabetic effects of methanol, hexane and dichloromethane extracts of the aerial parts of Ocimum basilicum (OB) and to analyze their phytochemical composition. Phytochemical analysis of the three extracts by GC/MS using the silylation derivatization technique revealed 53 compounds, 17 of them were found for the first time in OB. Cytotoxic and anti-diabetic properties of the extracts were evaluated using L6-GLUT4myc muscle cells stably expressing myc epitope at the exofacial loop (GLUT4). No cytotoxic effects were observed in treated cells up to 0.25 mg/ml extract as measured with MTT and LDH-leakage assays. GLUT4 translocation to the plasma membrane was elevated by 3.5 and 7 folds (-/+ insulin) after treatment with OB extracts for 20 h. Our findings suggest that the observed anti-diabetic properties of OB extracts are possibly mediated in part through one or more of the 17 new identified compound.
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Chemical composition and antibacterial activity of essential oil isolated from Omani basil (Ocimum basilicum Linn.). ASIAN PACIFIC JOURNAL OF TROPICAL DISEASE 2015. [DOI: 10.1016/s2222-1808(15)60905-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Hepatocyte Growth Factor Mediates the Antifibrogenic Action of Ocimum bacilicum Essential Oil against CCl4-Induced Liver Fibrosis in Rats. Molecules 2015. [PMID: 26213907 PMCID: PMC6331802 DOI: 10.3390/molecules200813518] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The current investigation aimed to evaluate the antifibrogenic potential of Ocimum basilicum essential oil (OBE) and further to explore some of its underlying mechanisms. Three groups of rats were used: group I (control), group II (CCl4 model) and group III (OBE-treated) received CCl4 and OBE 2 weeks after the start of CCl4 administration. Oxidative damage was assessed by the measurement of MDA, NO, SOD, CAT, GSH and total antioxidant capacity (TAC). Liver fibrosis was assessed histopathologically by Masson’s trichrome staining and α-smooth muscle actin (α-SMA) immunostaining. Expression of hepatocyte growth factor (HGF) and cytochrome P450 (CYP2EI isoform) was estimated using real-time PCR and immunohistochemistry. OBE successfully attenuated liver injury, as shown by histopathology, decreased serum transaminases and improved oxidative status of the liver. Reduced collagen deposition and α-SMA immuopositive cells indicated an abrogation of hepatic stellate cell activation by OBE. Furthermore, OBE was highly effective in stimulating HGF mRNA and protein expression and inhibiting CCl4-induced CYP2E1 down-regulation. The mechanism of antifibrogenic action of OBE is hypothesized to proceed via scavenging free radicals and activating liver regeneration by induction of HGF. These data suggest the use of OBE as a complementary treatment in liver fibrosis.
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El-Soud NHA, Deabes M, El-Kassem LA, Khalil M. Chemical Composition and Antifungal Activity of Ocimum basilicum L. Essential Oil. Open Access Maced J Med Sci 2015; 3:374-9. [PMID: 27275253 PMCID: PMC4877822 DOI: 10.3889/oamjms.2015.082] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 06/21/2015] [Accepted: 06/26/2015] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND The leaves of Ocimum basilicum L. (basil) are used in traditional cuisine as spices; its essential oil has found a wide application in perfumery, dental products as well as antifungal agents. AIM To assess the chemical composition as well as the in vitro antifungal activity of O. basilicum L. essential oil against Aspergillus flavus fungal growth and aflatoxin B1 production. MATERIAL AND METHODS The essential oil of O. basilicum was obtained by hydrodistillation and analysed using gas chromatography (GC) and GC coupled with mass spectrometry (GC/MS). The essential oil was tested for its effects on Aspergillus flavus (A. flavus) mycelial growth and aflatoxin B1 production in Yeast Extract Sucrose (YES) growth media. Aflatoxin B1 production was determined by high performance liquid chromatography (HPLC). RESULTS Nineteen compounds, representing 96.7% of the total oil were identified. The main components were as follows: linalool (48.4%), 1,8-cineol (12.2%), eugenol (6.6%), methyl cinnamate (6.2%), α-cubebene (5.7%), caryophyllene (2.5%), β-ocimene (2.1%) and α-farnesene (2.0%). The tested oil showed significant antifungal activity that was dependent on the used oil concentration. The complete inhibition of A. flavus growth was observed at 1000 ppm oil concentration, while marked inhibition of aflatoxin B1 production was observed at all oil concentrations tested (500, 750 and 1000 ppm). CONCLUSION These results confirm the antifungal activities of O. basilicum L. oil and its potential use to cure mycotic infections and act as pharmaceutical preservative against A. flavus growth and aflatoxin B1 production.
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Affiliation(s)
- Neveen Helmy Abou El-Soud
- Complementary Medicine Department, Medical Researches Division, National Research Center, El-Behouth Street, Dokki, 12311 Cairo, Egypt
| | - Mohamed Deabes
- Food Toxicology and Contaminants Department, National Research Center, El-Behouth Street, Dokki, 12311 Cairo, Egypt
| | - Lamia Abou El-Kassem
- Pharmacognosy Department - National Research Center- El-Behouth Street, Dokki, 12311 Cairo, Egypt
| | - Mona Khalil
- Biochemistry Department - Gizan University - K.S.A., Cairo, Egypt
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Anti-proliferative effects of Siegesbeckia orientalis ethanol extract on human endometrial RL-95 cancer cells. Molecules 2014; 19:19980-94. [PMID: 25470271 PMCID: PMC6271391 DOI: 10.3390/molecules191219980] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 11/18/2014] [Accepted: 11/21/2014] [Indexed: 11/17/2022] Open
Abstract
Endometrial cancer is a common malignancy of the female genital tract. This study demonstrates that Siegesbeckia orientalis ethanol extract (SOE) significantly inhibited the proliferation of RL95-2 human endometrial cancer cells. Treating RL95-2 cells with SOE caused cell arrest in the G2/M phase and induced apoptosis of RL95-2 cells by up-regulating Bad, Bak and Bax protein expression and down-regulation of Bcl-2 and Bcl-xL protein expression. Treatment with SOE increased protein expression of caspase-3, -8 and -9 dose-dependently, indicating that apoptosis was through the intrinsic and extrinsic apoptotic pathways. Moreover, SOE was also effective against A549 (lung cancer), Hep G2 (hepatoma), FaDu (pharynx squamous cancer), MDA-MB-231 (breast cancer), and especially on LNCaP (prostate cancer) cell lines. In total, 10 constituents of SOE were identified by Gas chromatography-mass analysis. Caryophyllene oxide and caryophyllene are largely responsible for most cytotoxic activity of SOE against RL95-2 cells. Overall, this study suggests that SOE is a promising anticancer agent for treating endometrial cancer.
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