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Zanul Abidin Z, Mohd Salleh N, Himratul-Aznita WH, Ahmad SF, Lim GS, Raja Mohd N, Dziaruddin N. Antifungal effects of eugenol on Candida albicans adherence to denture polymers. PeerJ 2023; 11:e15750. [PMID: 37601266 PMCID: PMC10439715 DOI: 10.7717/peerj.15750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 06/22/2023] [Indexed: 08/22/2023] Open
Abstract
Background The study's objective is to assess the adherence of C. albicans in different types of denture polymers and the effectiveness of eugenol and commercialized denture cleansers in the removal of C. albicans. Three types of denture base polymers (Lucitone® 199 (High-Impact PMMA), Impact® (conventional PMMA) and Eclipse® (UDMA)) and two hard denture reline materials (Kooliner® and Tokuyama® Rebase II Fast) were used in this study. Methods Three hundred samples were prepared (6 × 2 mm disc shape) and divided into five groups of denture polymers (n = 60) and further subjected into five treatment groups (Polident®, Steradent, distilled water, eugenol 5-minutes, and eugenol 10-min). Three samples were extracted from each treatment group for baseline data (n = 12). Baseline data were used to calculate the initial number of C. albicans adherence. A 0.5 ml immersion solution from each specimen was cultured on YPD agar and incubated for 48 h at 37 °C. Visible colonies were counted using a colony counter machine (ROCKER Galaxy 230). Results The result showed that the denture base polymer significantly affected the initial adherence (p = 0.007). The removal of C. albicans was also considerably affected by the denture base polymers and denture cleansers (p < 0.05). Lucitone®, Tokuyama®, and Kooliner® denture base polymers immersed for 3 min in eugenol showed the best results of removal. Discussion This study's overall results showed that all denture polymers used as denture bases had an effect on C. albicans initial adherence and removal from the denture base, and eugenol is comparable to commercialised denture cleansers in reducing the number of attached C. albicans on denture base polymers.
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Affiliation(s)
- Zubaidah Zanul Abidin
- Department of Restorative Dentistry, Universiti Malaya, Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Nosizana Mohd Salleh
- Department of Restorative Dentistry, Universiti Malaya, Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Wan Harun Himratul-Aznita
- Department of Oral and Craniofacial Sciences, Universiti Malaya, Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Siti Fauzza Ahmad
- Department of Restorative Dentistry, Universiti Malaya, Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Ghee Seong Lim
- Department of Restorative Dentistry, Universiti Malaya, Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Noorhayati Raja Mohd
- Department of Restorative Dentistry, Universiti Malaya, Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Nabihah Dziaruddin
- Department of Paediatric Dentistry & Orthodontics, Universiti Malaya, Kuala Lumpur, Kuala Lumpur, Malaysia
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Trans-cinnamaldehyde inhibits Penicillium italicum by damaging mitochondria and inducing apoptosis mechanisms. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2022.03.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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He W, Zhu Y, Chen Y, Shen Q, Hua Z, Wang X, Xue P. Inhibitory Effect and Mechanism of Chitosan-Ag Complex Hydrogel on Fungal Disease in Grape. Molecules 2022; 27:1688. [PMID: 35268789 PMCID: PMC8911985 DOI: 10.3390/molecules27051688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/23/2022] [Accepted: 03/02/2022] [Indexed: 01/27/2023] Open
Abstract
Hydrogel antibacterial agent is an ideal antibacterial material because of its ability to diffuse antibacterial molecules into the decayed area by providing a suitable microenvironment and acting as a protective barrier on the decay interface. The biocompatibility and biodegradation make the removal process easy and it is already widely used in medical fields. However, there have been few reports on its application for controlling postharvest diseases in fruit. In this study, the Chitosan-silver (CS-Ag) complex hydrogels were prepared using the physical crosslinking method, which is used for controlling postharvest diseases in grape. The prepared hydrogels were stable for a long period at room temperature. The structure and surface morphology of CS-Ag composite hydrogels were characterized by UV-Vis, FTIR, SEM, and XRD. The inhibitory effects of CS-Ag hydrogel on disease in grape caused by P. expansum, A. niger, and B. cinerea were investigated both in vivo and in vitro. The remarkable antibacterial activity of CS-Ag hydrogels was mainly due to the combined antibacterial and antioxidant effects of CS and Ag. Preservation tests showed that the CS-Ag hydrogel had positive fresh-keeping effect. This revealed that CS-Ag hydrogels can play a critical role in controlling fungal disease in grapes.
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Affiliation(s)
- Weizhong He
- Institute of Quality Standards & Testing Technology for Agro-Products, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (W.H.); (Q.S.); (Z.H.); (X.W.)
- Key Laboratory of Agro-Product Quality and Safety of Xinjiang, Laboratory of Quality and Safety Risk Assessment for Agro-Products, Ministry of Agriculture and Rural Affairs, Urumqi 830091, China
| | - Yajuan Zhu
- The Center for Disease Control and Prevention of Xinjiang Production and Construction Crops, Urumqi 830002, China
| | - Yan Chen
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China;
| | - Qi Shen
- Institute of Quality Standards & Testing Technology for Agro-Products, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (W.H.); (Q.S.); (Z.H.); (X.W.)
- Key Laboratory of Agro-Product Quality and Safety of Xinjiang, Laboratory of Quality and Safety Risk Assessment for Agro-Products, Ministry of Agriculture and Rural Affairs, Urumqi 830091, China
| | - Zhenyu Hua
- Institute of Quality Standards & Testing Technology for Agro-Products, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (W.H.); (Q.S.); (Z.H.); (X.W.)
- Key Laboratory of Agro-Product Quality and Safety of Xinjiang, Laboratory of Quality and Safety Risk Assessment for Agro-Products, Ministry of Agriculture and Rural Affairs, Urumqi 830091, China
| | - Xian Wang
- Institute of Quality Standards & Testing Technology for Agro-Products, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (W.H.); (Q.S.); (Z.H.); (X.W.)
- Key Laboratory of Agro-Product Quality and Safety of Xinjiang, Laboratory of Quality and Safety Risk Assessment for Agro-Products, Ministry of Agriculture and Rural Affairs, Urumqi 830091, China
| | - Peng Xue
- Institute of Quality Standards & Testing Technology for Agro-Products, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China; (W.H.); (Q.S.); (Z.H.); (X.W.)
- Key Laboratory of Agro-Product Quality and Safety of Xinjiang, Laboratory of Quality and Safety Risk Assessment for Agro-Products, Ministry of Agriculture and Rural Affairs, Urumqi 830091, China
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Antifungal activity of Ocimum gratissimum L., Lantana camara L. & Pteleopsis suberosa Engl. & Dies used in the treatment of vulvovaginal candidiasis in Benin. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00383-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Vulvovaginal candidiasis is a widespread mycotic infection that affects a large proportion of women of childbearing age. Its management in traditional medicine is based on the use of medicinal plants. This study aimed to evaluate the antifungal activity of Ocimum gratissimum L., Lantana camara L. and Pteleopsis suberosa Engl. & Diels used in the treatment of vulvovaginal candidiasis in Benin.
Results
The data obtained from the in vitro antifungal test show that the strains tested (ATCC 90028 and two clinical strains: 1MA and 3MA) were more sensitive to aqueous extracts with a better effect for Pteleopsis suberosa. This potential of the tested extracts correlated with their richness in total polyphenols. The extract of the Pteleopsis suberosa was very active on the inhibition of the reference strain ATCC 90028. On the clinical strains (1MA and 3MA) the aqueous extract of Pteleopsis suberosa showed a better MIC on the 1MA strain. In vivo model, inoculation of 100 µL of the concentrated Candida albicans suspension 1.5 × 105 UFC/mL induced the candidiasis of the female Wistar rat. The treatment with the aqueous extract of Pteleopsis suberosa, like fluconazole (reference drug), significantly reduced Candida albicans infection at a dose of 100 mg/kg after 1, 7 and 13 days of treatment.
Conclusion
This study revealed the potential antifungal of the Ocimum gratissimum, Lantana camara and Pteleopsis suberosa. Pteleopsis suberosa has better antifungal activity in vitro and in vivo. These observations justify the use of their medicinal plant in the traditional treatment of vulvovaginal candidiasis in Benin.
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Ugbogu OC, Emmanuel O, Agi GO, Ibe C, Ekweogu CN, Ude VC, Uche ME, Nnanna RO, Ugbogu EA. A review on the traditional uses, phytochemistry, and pharmacological activities of clove basil ( Ocimum gratissimum L.). Heliyon 2021; 7:e08404. [PMID: 34901489 PMCID: PMC8642617 DOI: 10.1016/j.heliyon.2021.e08404] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 07/29/2021] [Accepted: 11/11/2021] [Indexed: 01/03/2023] Open
Abstract
In traditional medicine, Ocimum gratissimum (clove basil) is used in the treatment of various diseases such as diabetes, cancer, inflammation, anaemia, diarrhoea, pains, and fungal and bacterial infections. The present study reviewed the phytochemicals, essential oils, and pharmacological activities of O. gratissimum. The bioactive compounds extracted from O. gratissimum include phytochemicals (oleanolic acid, caffeic acid, ellagic acid, epicatechin, sinapic acid, rosmarinic acid, chlorogenic acid, luteolin, apigenin, nepetoidin, xanthomicrol, nevadensin, salvigenin, gallic acid, catechin, quercetin, rutin, and kaempfero) and essential oils (camphene, β-caryophyllene, α- and β-pinene, α-humulene, sabinene, β-myrcene, limonene, 1,8-cineole, trans-β-ocimene, linalool, α- and δ-terpineol, eugenol, α-copaene, β-elemene, p-cymene, thymol, and carvacrol). Various in vivo and in vitro studies have shown that O. gratissimum and its bioactive constituents possess pharmacological properties such as antioxidant, anti-inflammatory, anticancer, hepatoprotective, antidiabetic, antihypertensive, antidiarrhoeal, and antimicrobial properties. This review demonstrated that O. gratissimum has a strong preventive and therapeutic effect against several diseases. The effectiveness of O. gratissimum to ameliorate various diseases may be attributed to its antimicrobial and antioxidant properties as well as its capacity to improve the antioxidant systems. However, despite the widespread pharmacological activities of O. gratissimum, further experiments in human clinical trial studies are needed to establish effective and safe doses for the treatment of various diseases.
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Affiliation(s)
| | - Okezie Emmanuel
- Department of Biochemistry, Abia State University, PMB 2000, Uturu, Abia State, Nigeria
| | - Grace Oka Agi
- Department of Human Nutrition and Dietetics, University of Ibadan, Nigeria
| | - Chibuike Ibe
- Department of Microbiology, Abia State University, Uturu, PMB 2000, Uturu, Abia State, Nigeria
| | - Celestine Nwabu Ekweogu
- Department of Medical Biochemistry, Imo State University, PMB 2000, Owerri, Imo State, Nigeria
| | - Victor Chibueze Ude
- Department of Medical Biochemistry, College of Medicine Enugu State University of Science and Technology, PMB 01660, Enugu, Nigeria
| | - Miracle Ebubechi Uche
- Department of Biochemistry, Abia State University, PMB 2000, Uturu, Abia State, Nigeria
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Colombian Essential Oil of Ruta graveolens against Nosocomial Antifungal Resistant Candida Strains. J Fungi (Basel) 2021; 7:jof7050383. [PMID: 34069001 PMCID: PMC8156898 DOI: 10.3390/jof7050383] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 12/12/2022] Open
Abstract
Drug resistance in antifungal therapy, a problem unknown until a few years ago, is increasingly assuming importance especially in immunosuppressed patients and patients receiving chemotherapy and radiotherapy. In the past years, the use of essential oils as an approach to improve the effectiveness of antifungal agents and to reduce antifungal resistance levels has been proposed. Our research aimed to evaluate the antifungal activity of Colombian rue, Ruta graveolens, essential oil (REO) against clinical strains of Candida albicans, Candida parapsilopsis, Candida glabrata, and Candida tropicalis. Data obtained showed that C. tropicalis and C. albicans were the most sensitive strains showing minimum inhibitory concentrations (MIC) of 4.1 and 8.2 µg/mL of REO. Time–kill kinetics assay demonstrated that REO showed a fungicidal effect against C. tropicalis and a fungistatic effect against C. albicans. In addition, an amount of 40% of the biofilm formed by C. albicans was eradicated using 8.2 µg/mL of REO after 1 h of exposure. The synergistic effect of REO together with some antifungal compounds was also investigated. Fractional inhibitory concentration index (FICI) showed synergic effects of REO combined with amphotericin B. REO Lead a disruption in the cellular membrane integrity, consequently resulting in increased intracellular leakage of the macromolecules, thus confirming that the plasma membrane is a target of the mode of action of REO against C. albicans and C. tropicalis.
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Luke AM, Patnaik R, Kuriadom ST, Jaber M, Mathew S. An in vitro study of Ocimum sanctum as a chemotherapeutic agent on oral cancer cell-line. Saudi J Biol Sci 2021; 28:887-890. [PMID: 33424380 PMCID: PMC7783796 DOI: 10.1016/j.sjbs.2020.11.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/02/2020] [Accepted: 11/03/2020] [Indexed: 11/27/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) is the most commom cancer in the world. If remain untreated for several years, it may be fatal. Hence, it is important to prevent and treat OSCC at an early stage. In this study the effect of aqueous and dry leaves extract of Ocimum sanctum was observed on Ca9-22 cell line, which is an OSCC cell line. For this, Ca9-22 cell line was cultured and maintained. After 24 h, the cells were treated with aqueous and dry leaves extract of Ocimum sanctum plant. Viability of the cancerous cells were studied by 3-(4, 5-dimethythiazol-2-yl)-2, 5-diphenyl tetrazolium bromide (MTT) assay and neutral red uptake (NRU) assay. Minimum inhibitory concentrations (MIC), lethal concentration25 (LC25), lethal concentration50 (LC50) and highest permissive concentration (HPC) was calculated by probit computational method. Experimentally, the MIC value was 5 mg/L, whereas the HPC was 30 mg/L of the plant extract in aqueous state. For the dry extract the MIC was 5 mg/L whereas the HPC was 35 mg/L for both MTT and NRU assays. For MTT assay LC values: 7.41 (LC25), 14.79 (LC50) and 26.91 mg/L (LC75) for aqueous extract and 12.58 (LC25), 20.89 (LC50), 29.51 mg/L (LC75) for dry extract. For NRU assay LC values were 10.23 (LC25), 14.79 (LC50) and 20.89 mg/L (LC75) aqueous extract, and 16.59 (LC25), 23.44 (LC50), 30.19 mg/L (LC75) dry extract of the plant. From the above study it was concluded that, Ocimum sanctum have anti-cancerous activity. It can further be used for therapeutic purposes.
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Affiliation(s)
- A M Luke
- Department of Clinical Sciences, College of Dentistry, Ajman University, Al Jurf, Ajman, United Arab Emirates
| | - R Patnaik
- Department of Clinical Sciences, College of Dentistry, Ajman University, Al Jurf, Ajman, United Arab Emirates
| | - S T Kuriadom
- Department of Clinical Sciences, College of Dentistry, Ajman University, Al Jurf, Ajman, United Arab Emirates
| | - M Jaber
- Department of Clinical Sciences, College of Dentistry, Ajman University, Al Jurf, Ajman, United Arab Emirates
| | - S Mathew
- Department of Basic Medical and Dental Sciences, College of Dentistry, Ajman University, Al Jurf, Ajman, UAE
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Fuloria S, Fuloria N, Subramaniyan V, Darnal H, Meenakshi D, Sekar M, Nordin R, Chakravarthi S, Sathasivam K, Khan S, Wu Y, Kumari U, Sudhakar K, Malviya R, Sharma V. COVID-19-associated mucormycosis and treatments. ASIAN PAC J TROP MED 2021. [DOI: 10.4103/1995-7645.326253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Karpiński TM. Essential Oils of Lamiaceae Family Plants as Antifungals. Biomolecules 2020; 10:biom10010103. [PMID: 31936168 PMCID: PMC7023020 DOI: 10.3390/biom10010103] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 01/03/2020] [Accepted: 01/06/2020] [Indexed: 12/29/2022] Open
Abstract
The incidence of fungal infections has been steadily increasing in recent years. Systemic mycoses are characterized by the highest mortality. At the same time, the frequency of infections caused by drug-resistant strains and new pathogens e.g., Candida auris increases. An alternative to medicines may be essential oils, which can have a broad antimicrobial spectrum. Rich in the essential oils are plants from the Lamiaceae family. In this review are presented antifungal activities of essential oils from 72 Lamiaceae plants. More than half of these have good activity (minimum inhibitory concentrations (MICs) < 1000 µg/mL) against fungi. The best activity (MICs < 100) have essential oils from some species of the genera Clinopodium, Lavandula, Mentha, Thymbra, and Thymus. In some cases were observed significant discrepancies between different studies. In the review are also shown the most important compounds of described essential oils. To the chemical components most commonly found as the main ingredients include β-caryophyllene (41 plants), linalool (27 plants), limonene (26), β-pinene (25), 1,8-cineole (22), carvacrol (21), α-pinene (21), p-cymene (20), γ-terpinene (20), and thymol (20).
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Affiliation(s)
- Tomasz M Karpiński
- Department of Medical Microbiology, Poznań University of Medical Sciences, Wieniawskiego 3, 61-712 Poznań, Poland
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Qian W, Sun Z, Wang T, Yang M, Liu M, Zhang J, Li Y. Antimicrobial activity of eugenol against carbapenem-resistant Klebsiella pneumoniae and its effect on biofilms. Microb Pathog 2019; 139:103924. [PMID: 31837416 DOI: 10.1016/j.micpath.2019.103924] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/06/2019] [Accepted: 12/10/2019] [Indexed: 01/01/2023]
Abstract
A preliminary study found that eugenol expressed an antibacterial activity against Klebsiella pneumoniae. However, the mechanism of action of eugenol against K. pneumoniae still remains unexplored. The aim of this study was to gain further insight into the antibacterial effect of eugenol against carbapenem-resistant Klebsiella pneumoniae (CRKP) and possible mode of action. Here, minimum inhibitory concentration (MIC) of eugenol against CRKP strains was determined using the agar dilution method. Moreover, variations in intracellular ATP concentration, intracellular pH (pHin), membrane potential and membrane integrity were measured to evaluate the effect of eugenol on cell membrane. Besides, changes in cell structure and biofilm formation of CRKP as well as biofilm-associated cell damage were determined using field emission scanning electron microscope (FESEM), transmission electron microscope (TEM) and confocal laser scanning microscopy (CLSM). Finally, gene expression of biofilm-related biosynthesis was investigated. The results showed that MICs of eugenol against four tested CRKP were 0.2 mg/mL. Eugenol damaged the cell membrane of CRKP, as evidenced by decreased intracellular ATP concentration, reduced pHin and cell membrane hyperpolarization, coupled with enhanced membrane permeability. Furthermore, eugenol compromised cell structure and induced loss of intracellular components of CRKP. Additionally, eugenol inhibited biofilm formation and inactivated biofilm CRKP cells. Finally, eugenol presented strong inhibitory effects on biofilm formation and biofilm-associated gene expression, and inactivated CRKP cells growing in biofilms. These findings suggest that eugenol exhibits antimicrobial effect against CRKP strains and could be potentially used to control CRKP-related infections.
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Affiliation(s)
- Weidong Qian
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China
| | - Zhaohuan Sun
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China
| | - Ting Wang
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China
| | - Min Yang
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China
| | - Miao Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China
| | - Jianing Zhang
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China
| | - Yongdong Li
- Ningbo Municipal Center for Disease Control and Prevention, Ningbo, 315010, PR China.
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Chen Y, Guo Q, Wei J, Zhang J, Zhang Z, Wang JD, Wu B. Inhibitory effect and mechanism of nitric oxide (NO) fumigation on fungal disease in Xinjiang Saimaiti dried apricots. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.108507] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Madhumita M, Guha P, Nag A. Optimization of the exhaustive hydrodistillation method in the recovery of essential oil from fresh and cured betel leaves (
Piper betle
L.) using the Box–Behnken design. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.14196] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Mitali Madhumita
- Department of Agricultural and Food Engineering Indian Institute of Technology Kharagpur Kharagpur India
| | - Proshanta Guha
- Department of Agricultural and Food Engineering Indian Institute of Technology Kharagpur Kharagpur India
| | - Ahindra Nag
- Department of Chemistry Indian Institute of Technology Kharagpur Kharagpur India
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Maurya S, Chandra M, Yadav RK, Narnoliya LK, Sangwan RS, Bansal S, Sandhu P, Singh U, Kumar D, Sangwan NS. Interspecies comparative features of trichomes in Ocimum reveal insights for biosynthesis of specialized essential oil metabolites. PROTOPLASMA 2019; 256:893-907. [PMID: 30656458 DOI: 10.1007/s00709-018-01338-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 12/06/2018] [Indexed: 05/12/2023]
Abstract
Ocimum species commonly referred to as "Tulsi" are well-known for their distinct medicinal and aromatic properties. The characteristic aroma of Ocimum species and cultivars is attributed to their specific combination of volatile phytochemicals mainly belonging to terpenoid and/or phenylpropanoid classes in their essential oils. The essential oil constituents are synthesized and sequestered in specialized epidermal secretory structures called as glandular trichomes. In this comparative study, inter- and intra-species diversity in structural attributes and profiles of expression of selected genes related to terpenoid and phenylpropanoid biosynthetic pathways have been investigated. This is performed to seek relationship of variations in the yield and phytochemical composition of the essential oils. Microscopic analysis of trichomes of O. basilicum, O. gratissimum, O. kilimandscharicum, and O. tenuiflorum (green and purple cultivars) revealed substantial variations in density, size, and relative proportions of peltate and capitate trichomes among them. The essential oil yield has been observed to be controlled by the population, dominance, and size of peltate and capitate glandular trichomes. The essential oil sequestration in leaf is controlled by the dominance of peltate glandular trichome size over its number and is also affected by the capitate glandular trichome size/number with variations in leaf area albeit at lower proportions. Comprehension and comparison of results of GC-MS analysis of essential oils showed that most of the Ocimum (O. basilicum, O. tenuiflorum, and O. gratissimum) species produce phenylpropanoids (eugenol, methyl chavicol) as major volatiles except O. kilimandscharicum, which is discrete in being monoterpenoid-rich species. Among the phenylpropanoid-enriched Ocimum (O. basilicum, O. gratissimum, O. tenuiflorum purple, O. tenuiflorum green) as well, terpenoids were important constituents in imparting characteristic aroma. Further, comparative abundance of transcripts of key genes of phenylpropanoid (PAL, C4H, 4CL, CAD, COMT, and ES) and terpenoid (DXS and HMGR) biosynthetic pathways was evaluated vis-à-vis volatile oil constituents. Transcript abundance demonstrated that richness of their essential oils with specific constituent(s) of a chemical group/subgroup was manifested by the predominant upregulation of phenylpropanoid/terpenoid pathway genes. The study provides trichomes as well as biosynthetic pathway-based knowledge for genetic improvement in Ocimum species for essential oil yield and quality.
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Affiliation(s)
- Shiwani Maurya
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, 226015, India
- CSIR- Human Resource Development Centre Campus, Academy of Scientific and Innovative Research (AcSIR), Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh, 201002, India
| | - Muktesh Chandra
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, 226015, India
| | - Ritesh K Yadav
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, 226015, India
| | - Lokesh K Narnoliya
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, 226015, India
| | - Rajender S Sangwan
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, 226015, India
- CSIR- Human Resource Development Centre Campus, Academy of Scientific and Innovative Research (AcSIR), Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh, 201002, India
- Center of Innovative and Applied Bioprocessing (A National Institute under the Department of Biotechnology, Govt. of India), Sector-81 (Knowledge City), P.O. Manauli, S.A.S. Nagar, Mohali, Punjab, 140306, India
| | - Shilpi Bansal
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, 226015, India
- CSIR- Human Resource Development Centre Campus, Academy of Scientific and Innovative Research (AcSIR), Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh, 201002, India
| | - Pankajpreet Sandhu
- Center of Innovative and Applied Bioprocessing (A National Institute under the Department of Biotechnology, Govt. of India), Sector-81 (Knowledge City), P.O. Manauli, S.A.S. Nagar, Mohali, Punjab, 140306, India
| | - Umesh Singh
- Center of Innovative and Applied Bioprocessing (A National Institute under the Department of Biotechnology, Govt. of India), Sector-81 (Knowledge City), P.O. Manauli, S.A.S. Nagar, Mohali, Punjab, 140306, India
| | - Devender Kumar
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, 226015, India
| | - Neelam Singh Sangwan
- Department of Metabolic and Structural Biology, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, 226015, India.
- CSIR- Human Resource Development Centre Campus, Academy of Scientific and Innovative Research (AcSIR), Sector 19, Kamla Nehru Nagar, Ghaziabad, Uttar Pradesh, 201002, India.
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Barupal T, Meena M, Sharma K. Inhibitory effects of leaf extract of Lawsonia inermis on Curvularia lunata and characterization of novel inhibitory compounds by GC-MS analysis. ACTA ACUST UNITED AC 2019; 23:e00335. [PMID: 31194076 PMCID: PMC6546954 DOI: 10.1016/j.btre.2019.e00335] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/27/2019] [Accepted: 03/31/2019] [Indexed: 11/10/2022]
Abstract
Isolation of active principle compound was found maximum in acetone extract of L. inermis leaf. Phytochemical tests suggest that carbohydrate, steroids, volatile oils, flavonoids, and tannins were found to be present in acetone extract of L. inermis leaf. In vitro assay of antifungal activity of all column fractions fraction no. F1 which exhibited most significant antifungal activity against the test fungus. GC–MS analysis of column fraction showed the occurrence of total 6 constituents. The obtained constituents are hexacosane, octadecane, docosane, heptacosane methyl, octacosane, and tetracosane.
Plants produce a high diversity of natural products with a prominent function in the protection against microbial pathogens on the basis of their toxic effect on growth and reproduction. In the present study, effect of partially purified acetone fraction of L. inermis leaves on various cytomorphological parameters i.e. mycelium width, conidial size, etc. of test fungi and fraction was subjected to confirming the presence of primary and secondary metabolites by rapid qualitative phytochemical tests, chromatographic methods such as TLC, column chromatography, GC–MS, etc. which were responsible for the inhibition of growth of test pathogen conidial size of Curvularia lunata decreased up to 64.76% at 0.039 μg/ml concentration of the extract. Mycelial width of C. lunata increased up to 55.91% at 0.312 μg/ml concentration of the extract. Carbohydrate, steroids, volatile oils, flavonoids, and tannins were found to be present in acetone extract of L. inermis leaf. Total of 7 bands were observed in TLC fingerprinting of L. inermis acetone fraction. Total of 10 fractions were collected from the column chromatography. Fractions which show the most significant antifungal activity against the test fungus was subjected to further GC–MS analysis for the separation and identification of active principle. GC–MS analyses show the presence of total 6 constituents i.e. hexacosane, octadecane, docosane, heptacosane methyl, octacosane, and tetracosane.
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Key Words
- Bioformulations
- CC, Column chromatography
- CD, Critical difference
- CV, Coefficient of variation
- Chromatography
- Curvularia lunata
- DAD, Diode array detector
- FeCl3, Ferric chloride
- GC–MS, Gas chromatography–mass spectrometry
- H2SO4, Sulfuric acid
- HCl, Hydrochloric acid
- HPLC, High performance liquid chromatography
- Lawsonia inermis
- MFC, Minimum fungicidal concentration
- MIC, Minimum inhibitory concentration
- NaOH, Sodium hydroxide
- PDA, Potato dextrose agar
- PE, Petroleum ether
- PE, petroleum ether
- RF, Retardation factor
- SE, Standard error
- Secondary metabolites
- TLC, Thin layer chromatography
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Affiliation(s)
- Tansukh Barupal
- Department of Botany, University College of Science, Mohanlal Sukhadia University, Udaipur 313001, Rajasthan, India
| | - Mukesh Meena
- Department of Botany, University College of Science, Mohanlal Sukhadia University, Udaipur 313001, Rajasthan, India
| | - Kanika Sharma
- Department of Botany, University College of Science, Mohanlal Sukhadia University, Udaipur 313001, Rajasthan, India
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Sivareddy B, Reginald BA, Sireesha D, Samatha M, Reddy KH, Subrahamanyam G. Antifungal activity of solvent extracts of Piper betle and Ocimum sanctum Linn on Candida albicans: An in vitro comparative study. J Oral Maxillofac Pathol 2019; 23:333-337. [PMID: 31942110 PMCID: PMC6948066 DOI: 10.4103/jomfp.jomfp_167_19] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Oral candidiasis is a common fungal infection caused by Candida albicans. In recent years, Candida species have shown resistance against many synthetic drugs, which has highlighted the need for novel antifungal drugs with fewer side effects for effective management of candidiasis. Several studies have suggested that some plant species possess promising antimicrobial compounds. Piper betle and Ocimum sanctum Linn are such common medicinal plants that show strong antimicrobial activity by the release of secondary metabolites. However, the effect of these plants on oral candidiasis has not been studied and hence, the present study aimed to evaluate the antifungal activity of these plant extracts on the subcultures of C. albicans and compared with a standard drug, fluconazole. Materials and Methods Subcultures of C. albicans obtained from oral thrush patients were used in the present study. Ethanolic and ethyl acetate extracts of P. betle (betel) and O. sanctum L. (tulsi) leaves were prepared by cold extraction method. The anticandidal activity and minimum inhibitory concentration (MIC) were evaluated using disc diffusion method and microbroth dilution method, respectively. Values were compared with the standard drug fluconazole. Results Both the extracts exhibited anticandidal activity on the subcultures of C. albicans. The ethyl acetate extract of mature betel leaf showed a maximum zone of inhibition (26 mm) when compared with tulsi and fluconazole (13 mm). Betel leaf extract showed better MIC values (125 μg/ml) than tulsi (2000 μg/ml). However, these values were high when compared with those of fluconazole (62.5 μg/ml). Conclusion Ethyl acetate extract of mature betel leaf exhibited good anticandidal activity than that of tulsi and fluconazole.
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Affiliation(s)
- Basireddy Sivareddy
- Department of Oral and Maxillofacial Pathology, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India
| | - Bernard Ajay Reginald
- Department of Oral and Maxillofacial Pathology, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India
| | - D Sireesha
- Department of Oral and Maxillofacial Pathology, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India
| | - Meda Samatha
- Department of Oral and Maxillofacial Pathology, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India
| | - K Himakar Reddy
- Department of Oral and Maxillofacial Pathology, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India
| | - G Subrahamanyam
- Department of Oral and Maxillofacial Pathology, Narayana Dental College and Hospital, Nellore, Andhra Pradesh, India
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Chimnoi N, Reuk-Ngam N, Chuysinuan P, Khlaychan P, Khunnawutmanotham N, Chokchaichamnankit D, Thamniyom W, Klayraung S, Mahidol C, Techasakul S. Characterization of essential oil from Ocimum gratissimum leaves: Antibacterial and mode of action against selected gastroenteritis pathogens. Microb Pathog 2018; 118:290-300. [PMID: 29578062 DOI: 10.1016/j.micpath.2018.03.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 03/20/2018] [Accepted: 03/21/2018] [Indexed: 02/06/2023]
Abstract
Essential oil of fresh leaves of Ocimum gratissimum (OGEO) was water-steam distilled and analyzed by GC-MS. Thirty-seven compounds were identified, with eugenol (55.6%) as the major component followed by cis-ocimene (13.9%), γ-muurolene (11.6%), (Z,E)-α-farnesene (5.6%), α-trans-bergamotene (4.1%), and β-caryophyllene (2.7%). Antimicrobial activity of OGEO was tested against four gastroenteritis pathogens (Staphylococcus aureus, Escherichia coli, Salmonella Typhimurium, and Shigella flexneri). OGEO exhibited antibacterial effect, with MICs of 1-2 mg ml-1, against the tested species. OGEO also displayed rapid killing effect within 5 s at four times of MIC against both E. coli and S. Typhimurium. Various assays were performed to investigate the mode of action of the oil. OGEO increased the permeability of microbial cell membrane as evidenced by LIVE/DEAD BacLight assay. Analyses of the release of absorbing materials at 260 nm, protein leakage, SDS-PAGE, and SEM strongly suggested the disruptive action of the oil on the cytoplasmic membrane of the tested microorganisms. Results revealed that the antibacterial property of OGEO could be due to membrane disruption.
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Affiliation(s)
- Nitirat Chimnoi
- Laboratory of Natural Products, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Nanthawan Reuk-Ngam
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Piyachat Chuysinuan
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Panita Khlaychan
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Nisachon Khunnawutmanotham
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Daranee Chokchaichamnankit
- Laboratory of Biochemistry, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Wassapol Thamniyom
- Office of Research, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Srikanjana Klayraung
- Department of Biology, Faculty of Science, Maejo University, Chiang Mai 50290, Thailand
| | - Chulabhorn Mahidol
- Laboratory of Natural Products, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand
| | - Supanna Techasakul
- Laboratory of Organic Synthesis, Chulabhorn Research Institute, 54 Kamphaeng Phet 6, Talat Bang Khen, Lak Si, Bangkok 10210, Thailand.
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Moraes RC, Carvalho AR, Lana AJD, Kaiser S, Pippi B, Fuentefria AM, Ortega GG. In vitro synergism of a water insoluble fraction of Uncaria tomentosa combined with fluconazole and terbinafine against resistant non-Candida albicans isolates. PHARMACEUTICAL BIOLOGY 2017; 55:406-415. [PMID: 27931150 PMCID: PMC6130498 DOI: 10.1080/13880209.2016.1242631] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 09/11/2016] [Accepted: 09/26/2016] [Indexed: 06/06/2023]
Abstract
CONTEXT Uncaria tomentosa D.C. (Rubiaceae) has several biological activities, including activity against resistant Candida strains. The synergistic interaction with terbinafine or fluconazole can be an important alternative to overcome this resistance. OBJECTIVES The potential synergy between a water insoluble fraction (WIF) from Uncaria tomentosa bark and the antifungals terbinafine (TRB) and fluconazole (FLZ) against non-Candida albicans resistant strains was investigated. MATERIALS AND METHODS TRB and FLZ, alone and combined with WIF, were tested by the checkerboard procedure using the micro-dilution technique against seven isolates of Candida glabrata and C. krusei. The molecular interactions occurring outside the cell wall were evaluated by scanning electron microscopy, Fourier transform infrared (FT-IR) and differential scanning calorimetry (DSC) analysis. RESULTS The checkerboard inhibitory assay demonstrated synergy for WIF:TRB and WIF:FLZ combinations, respectively. The best synergistic cell damage was demonstrated unequivocally for the associations of WIF and TRB (1.95:4.0 μg/mL) and WIF and FLZ (1.95:8.0 μg/mL). The comparison of the FT-IR spectra of the antifungal alone, and in combination with WIF, allows recognizing clear differences in 3000, 1600, 1400, and 700-800 cm-1 bands. Additionally, modifications on TRB and FLZ thermograms were clearly noticed after their combination with WIF. CONCLUSIONS DSC and infrared analysis demonstrated intermolecular interactions between WIF and either TRB or FLZ. Hence, quite likely the synergistic effect is related to interaction events occurring outside the cell wall between antifungal and cat's claw proanthocyanidins. A direct action on the cell wall is suggested, without connection with the ABC efflux pump mechanism.
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Affiliation(s)
- Renata Cougo Moraes
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Anderson Ramos Carvalho
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Aline Jacobi Dalla Lana
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Samuel Kaiser
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Bruna Pippi
- Post-Graduate Program in Agricultural and Environmental Microbiology (PPGMAA), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Alexandre Meneghello Fuentefria
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
- Post-Graduate Program in Agricultural and Environmental Microbiology (PPGMAA), Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - George González Ortega
- Post-Graduate Program in Pharmaceutical Sciences (PPGCF), Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
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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: 112] [Impact Index Per Article: 16.0] [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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Antifungal Properties of Crude Extracts, Fractions, and Purified Compounds from Bark of Curatella americana L. (Dilleniaceae) against Candida Species. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:673962. [PMID: 26347790 PMCID: PMC4548135 DOI: 10.1155/2015/673962] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Revised: 07/02/2015] [Accepted: 07/21/2015] [Indexed: 01/09/2023]
Abstract
The ethnomedicinal plant Curatella americana L. (Dilleniaceae) is a common shrub in the Brazilian cerrado, in which crude extract showed antifungal activity in a preliminary study. In this work, the antifungal and cytotoxic properties of the crude extract, fractions, and isolated compounds from C. americana were evaluated against the standard yeast strains Candida albicans, C. tropicalis, and C. parapsilosis, clinical isolates, and fluconazole-resistant strains. The combinatory effects between subfractions and isolated compounds and effects on cell morphology, virulence factors, and exogenous ergosterol were also evaluated. The MIC obtained against the Candida species including fluconazole-resistant strain ranged from 15.3 to 31.3 µg/mL for crude extract, 3.9 to 15.6 µg/mL for ethyl acetate fraction, and 7.8 to 31.3 µg/mL for subfractions. The isolated compounds identified as 4′-O-methyl-catechin, epicatechin-3-O-gallate, and 4′-O-methyl-catechin-3-O-gallate showed lower antifungal activity than the crude extract and fractions (MIC ranging from 31.3 to 125.0 µg/mL). The addition of exogenous ergosterol to yeast culture did not interfere in the antifungal activity of the extract and its fractions. Synergistic antifungal activity was observed between subfractions and isolated compounds. The effects on virulence factors and the different mechanisms of action compared to fluconazole and nystatin suggest that this ethnomedicinal plant may be an effective alternative treatment for candidiasis.
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Mahapatra SK, Roy S. Phytopharmacological approach of free radical scavenging and anti-oxidative potential of eugenol and Ocimum gratissimum Linn. ASIAN PAC J TROP MED 2014; 7S1:S391-7. [DOI: 10.1016/s1995-7645(14)60264-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 05/10/2014] [Accepted: 06/04/2014] [Indexed: 11/25/2022] Open
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Effect of Eugenol on Cell Surface Hydrophobicity, Adhesion, and Biofilm of Candida tropicalis and Candida dubliniensis Isolated from Oral Cavity of HIV-Infected Patients. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:505204. [PMID: 24799938 PMCID: PMC3996878 DOI: 10.1155/2014/505204] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Accepted: 02/21/2014] [Indexed: 11/17/2022]
Abstract
Most Candida spp. infections are associated with biofilm formation on host surfaces. Cells within these communities display a phenotype resistant to antimicrobials and host defenses, so biofilm-associated infections are difficult to treat, representing a source of reinfections. The present study evaluated the effect of eugenol on the adherence properties and biofilm formation capacity of Candida dubliniensis and Candida tropicalis isolated from the oral cavity of HIV-infected patients. All isolates were able to form biofilms on different substrate surfaces. Eugenol showed inhibitory activity against planktonic and sessile cells of Candida spp. No metabolic activity in biofilm was detected after 24 h of treatment. Scanning electron microscopy demonstrated that eugenol drastically reduced the number of sessile cells on denture material surfaces. Most Candida species showed hydrophobic behavior and a significant difference in cell surface hydrophobicity was observed after exposure of planktonic cells to eugenol for 1 h. Eugenol also caused a significant reduction in adhesion of most Candida spp. to HEp-2 cells and to polystyrene. These findings corroborate the effectiveness of eugenol against Candida species other than C. albicans, reinforcing its potential as an antifungal applied to limit both the growth of planktonic cells and biofilm formation on different surfaces.
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Early state research on antifungal natural products. Molecules 2014; 19:2925-56. [PMID: 24609016 PMCID: PMC6271505 DOI: 10.3390/molecules19032925] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 01/01/2014] [Accepted: 01/09/2014] [Indexed: 01/20/2023] Open
Abstract
Nosocomial infections caused by fungi have increased greatly in recent years, mainly due to the rising number of immunocompromised patients. However, the available antifungal therapeutic arsenal is limited, and the development of new drugs has been slow. Therefore, the search for alternative drugs with low resistance rates and fewer side effects remains a major challenge. Plants produce a variety of medicinal components that can inhibit pathogen growth. Studies of plant species have been conducted to evaluate the characteristics of natural drug products, including their sustainability, affordability, and antimicrobial activity. A considerable number of studies of medicinal plants and alternative compounds, such as secondary metabolites, phenolic compounds, essential oils and extracts, have been performed. Thus, this review discusses the history of the antifungal arsenal, surveys natural products with potential antifungal activity, discusses strategies to develop derivatives of natural products, and presents perspectives on the development of novel antifungal drug candidates.
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Identification of chicoric acid as a hypoglycemic agent from Ocimum gratissimum leaf extract in a biomonitoring in vivo study. Fitoterapia 2014; 93:132-41. [PMID: 24418658 DOI: 10.1016/j.fitote.2013.12.024] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 12/29/2013] [Accepted: 12/31/2013] [Indexed: 11/20/2022]
Abstract
Ocimum gratissimum L. is popularly used to treat diabetes mellitus. The hypoglycemic activity of this medicinal species has been confirmed by in vivo studies. The present study conducted a chemical investigation of a leaf decoction (10% p/v) of O. gratissimum monitored by in vivo hypoglycemic activity assays. Four phenolic substances were identified: L-caftaric acid (1), L-chicoric acid (2), eugenyl-β-D-glucopyranoside (3) and vicenin-2 (4). The acute hypoglycemic activity of the O. gratissimum decoction fractions Og1-S (300 mg/kg), Og1-A (240 mg/kg) and Og1-B (80 mg/kg) was evaluated intraperitoneally in normal and streptozotocin-induced diabetic mice. They reduced glycemia by 63%, 76% and 60% (in 120 min), respectively, in the diabetic mice. Subfractions of Og1-A were also evaluated under the same conditions: Og1-AS (200 mg/kg) and Og1-AP (40 mg/kg) produced a decrease of only 37% and 39%, respectively. Among the major phenolic substances, only chicoric acid (2; 3 mg/kg) reduced significantly the glycemic levels of diabetic mice by 53%, 120 min after treatment. This is the first study describing the hypoglycemic activity of chicoric acid in an animal model of diabetes mellitus. In addition, we suggest that there may be other substances contributing to this activity. Thus, for the first time, a correlation is established between the hypoglycemic activity of O. gratissimum and its chemical composition.
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Growth inhibitory response and ultrastructural modification of oral-associated candidal reference strains (ATCC) by Piper betle L. extract. Int J Oral Sci 2014; 6:15-21. [PMID: 24406634 PMCID: PMC3967311 DOI: 10.1038/ijos.2013.97] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 11/11/2013] [Indexed: 11/09/2022] Open
Abstract
Candida species have been associated with the emergence of strains resistant to selected antifungal agents. Plant products have been used traditionally as alternative medicine to ease mucosal fungal infections. This study aimed to investigate the effects of Piper betle extract on the growth profile and the ultrastructure of commonly isolated oral candidal cells. The major component of P. betle was identified using liquid chromatography-mass spectrophotometry (LC-MS/MS). Seven ATCC control strains of Candida species were cultured in yeast peptone dextrose broth under four different growth environments: (i) in the absence of P. betle extract; and in the presence of P. betle extract at respective concentrations of (ii) 1 mg⋅mL(-1); (iii) 3 mg⋅mL(-1); and (iv) 6 mg⋅mL(-1). The growth inhibitory responses of the candidal cells were determined based on changes in the specific growth rates (µ). Scanning electron microscopy (SEM) was used to observe any ultrastructural alterations in the candida colonies. LC-MS/MS was performed to validate the presence of bioactive compounds in the extract. Following treatment, it was observed that the µ-values of the treated cells were significantly different than those of the untreated cells (P<0.05), indicating the fungistatic properties of the P. betle extract. The candidal population was also reduced from an average of 13.44×10(6) to 1.78×10(6) viable cell counts (CFU)⋅mL(-1). SEM examination exhibited physical damage and considerable morphological alterations of the treated cells. The compound profile from LC-MS/MS indicated the presence of hydroxybenzoic acid, chavibetol and hydroxychavicol in P. betle extract. The effects of P. betle on candida cells could potentiate its antifungal activity.
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Dodonaea viscosa var. angustifolia Inhibits Germ Tube and Biofilm Formation by C. albicans. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:261978. [PMID: 24223612 PMCID: PMC3809598 DOI: 10.1155/2013/261978] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 09/05/2013] [Indexed: 11/30/2022]
Abstract
The virulence factors of Candida albicans are germ tube and biofilm formation, adherence to host tissues, and production of hydrolytic enzymes. This study investigated the effect of Dodonaea viscosa var. angustifolia extract on the germ tube and biofilm formation of C. albicans. Serum containing the three subinhibitory concentrations of leaf extract was inoculated with C. albicans, incubated, and viewed under a light microscope. Number of cells with germ tube was recorded and the results were analysed using Scheffe test for pairwise comparison. Biofilms were grown on coverslips in the presence of plant extracts and processed for scanning electron microscopy (SEM). Planktonic cells were grown in the presence of plant extract for 6 h and processed for electron microscopy (TEM).
The crude plant extract significantly (P < 0.01) reduced the germ tube formation of C. albicans at 3.125 (85.36%), 1.56 (61.91%), and 0.78 mg/mL (26.27%) showing a concentration dependent effect. SEM results showed concentration dependent reduction in biofilm and hyphae formation. TEM results showed that the plant extract caused damage to the cell wall and cell membrane. DVA extract has ability to reduce virulence of C. albicans by inhibiting germ tube and biofilm formation through damage to the cell wall. Therefore, it has therapeutic potential.
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Moura-Costa GF, Nocchi SR, Ceole LF, de Mello JCP, Nakamura CV, Dias Filho BP, Temponi LG, Ueda-Nakamura T. Antimicrobial activity of plants used as medicinals on an indigenous reserve in Rio das Cobras, Paraná, Brazil. JOURNAL OF ETHNOPHARMACOLOGY 2012; 143:631-638. [PMID: 22867638 DOI: 10.1016/j.jep.2012.07.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2012] [Revised: 07/16/2012] [Accepted: 07/20/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE A considerable percentage of global biodiversity is located in Brazil, a country that also has rich cultural and ethnic diversity. In the community of Rio das Cobras, Paraná, plants are still widely used in the health care not only by indigenous people but also by the non-indigenous population that inhabits the region. The investigation of the efficacy and safety of these plants in the treatment of infectious diseases provides insights for future studies of these species allowing the appropriated use by the indigenous people, since few or none study has been conducted so far. AIM OF THE STUDY Evaluate the antimicrobial activity and cytotoxicity of some plants used as medicinal on an indigenous reserve in Rio das Cobras, Paraná, Brazil. MATERIALS AND METHODS The aqueous extracts were obtained by decoction and the 50% and 70% hydroalcoholic extracts by turbo extraction. The extracts were tested against strains of Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, Candida albicans, Candida parapsilosis, Candida tropicalis, Leishmania amazonensis, Poliovirus and HSV-1. Cytotoxicity assay using VERO cells were also performed. RESULTS None of the extracts had a selectivity index (SI)>1 for any of the tested bacteria. Only Campomanesia eugenioides and Schinus terebinthifolius had an SI>1.0 for all of the tested Candida species. The best anti-Leishmania activity was obtained with Zanthoxylum rhoifolium and Schinus terebinthifolius. Extracts of Cordia americana were the most effective against herpes simplex virus type 1. Zanthoxylum rhoifolium was the most effective against Poliovirus, and Ocimum gratissimum was effective against both Poliovirus and Herpes Simplex virus. Among the plants investigated in the present study, Zanthoxylum rhoifolium had the fewest cytotoxic effect. CONCLUSIONS The plants investigated in the present study exhibited potential for future pharmacological uses, but additional studies, especially with regard to in vivo toxicity, must be conducted. The results of this preliminary survey are important for the Rio das Cobras Reserve community for the safe and effective use of plants in the treatment of some infectious diseases.
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Affiliation(s)
- Gislaine F Moura-Costa
- Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Estadual de Maringá, Av. Colombo, 5790, 87020-900, Maringá, Paraná, Brazil.
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Enhanced chemical and biological activities of a newly biosynthesized eugenol glycoconjugate, eugenol α-D-glucopyranoside. Appl Microbiol Biotechnol 2012; 97:1043-50. [PMID: 22923067 DOI: 10.1007/s00253-012-4351-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 07/12/2012] [Accepted: 08/02/2012] [Indexed: 10/28/2022]
Abstract
Eugenol, the essential component (over 90 %) of clove oil from Eugenia caryophyllata Thunb. (Myrtaceae), is a phenolic compound well known for its versatile pharmacological actions, including analgesic, local anesthetic, anti-inflammatory, antimicrobial, antitumor, and hair-growing effects. However, the application of eugenol is greatly limited mainly because of its unwanted physicochemical properties, such as low solubility, liability to sublimation, and pungent odor. Since glycosylation has been suggested to improve the physicochemical and biological properties of the parental compound, we have previously developed a novel and efficient way to biosynthesize highly purified eugenol α-D-glucopyranoside (α-EG). In light of the widely acknowledged importance of pure eugenol and the potential superiority of the glycosylation, it is crucial to further explore and compare the physicochemical and biological properties of these two phenolic compounds. In this study, we demonstrate that glucosylation is a promising method for modification of phenolic compound, and that α-EG is superior over its parent eugenol, in all of the tested aspects, including physicochemical properties, antioxidation activity, and antimicrobial and antitumor activities. These results strongly suggest that α-EG, as a novel prodrug, may serve as a useful probe and potential therapeutic drug in both fundamental research and clinical application in the coming future.
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Tian J, Ban X, Zeng H, Huang B, He J, Wang Y. In vitro and in vivo activity of essential oil from dill (Anethum graveolens L.) against fungal spoilage of cherry tomatoes. Food Control 2011. [DOI: 10.1016/j.foodcont.2011.05.018] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Rao BRR, Kothari SK, Rajput DK, Patel RP, Darokar MP. Chemical and Biological Diversity in Fourteen Selections of Four Ocimum Species. Nat Prod Commun 2011. [DOI: 10.1177/1934578x1100601134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Biomass, essential oil yield, essential oil composition diversity, and antibacterial and antifungal activities of 14 selections of 4 Ocimum species [ Ocimum basilicum L. (selections: T1-T10), O. gratissimum L. (selections: T11-T12), O. tenuflorum L.f., syn. O. sanctum L. (selection: T13) and O. kilimandscharicum Baker ex. Guerke (selection: T14)] were investigated. O. basilicum selections T9 (methyl chavicol: 87.0%) and T10 {( Z)- and ( E)-methyl cinnamate: 69.1%} produced higher biomass (67.8 and 56.7 t/ha) and oil (203.4 and 141.7 kg/ha) yields relative to 8 (T1-T8) linalool (up to 58.9%), or methyl chavicol (up to 61.8%) rich selections. O. gratissimum selection T12 (eugenol: 84.1%, 254.6 kg/ha oil yield) was significantly superior to T11 (62.1% eugenol and 18.4% camphor). O. tenuiflorum (T13, methyl eugenol: 72.5%) and O. kilimandscharicum (T14, camphor: 51.7%) produced 171.7 and 96.2 kg/ha essential oil, respectively. The essential oils exhibited broad spectrum antibacterial (against 5 Gram-positive and 7 Gram-negative bacteria) and antifungal (against 10 fungi) activities. The bacterial species Bacillus subtilis, Staphylococcus aureus, Streptococcus mutans, and Enterococcus faecalis, and the fungal species Epidermophyton floccosum, Microsporum gypseum, and Sporothrix schenckii were more sensitive to the essential oils.
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Affiliation(s)
- Bhaskaruni R. Rajeswara Rao
- Central Institute of Medicinal and Aromatic Plants (CIMAP) Research Centre, Boduppal, Uppal, Hyderabad-500 092, India
| | - Sushil K. Kothari
- Central Institute of Medicinal and Aromatic Plants (CIMAP) Research Centre, Boduppal, Uppal, Hyderabad-500 092, India
| | - Dharmendra K. Rajput
- Central Institute of Medicinal and Aromatic Plants (CIMAP) Research Centre, Boduppal, Uppal, Hyderabad-500 092, India
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Anti-Candida albicans activity, cytotoxicity and interaction with antifungal drugs of essential oils and extracts from aromatic and medicinal plants. INFECTIO 2011. [DOI: 10.1016/s0123-9392(11)70080-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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de las Mercedes Oliva M, Carezzano ME, Gallucci MN, Demo MS. Antimycotic Effect of the Essential Oil of Aloysia Triphylla against Candida Species Obtained from Human Pathologies. Nat Prod Commun 2011. [DOI: 10.1177/1934578x1100600729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The research of alternative substances to treat infections caused by Candida species is a need. Aromatic plants have the ability to produce secondary metabolites, such as essential oils (EO). The antimicrobial properties of Aloysia triphylla (L'Her.) Britton (cedrón) EO has been previously described. The aims of this work were to determine the antimicrobial activity and the effect on the cell structure of the EO of A. triphylla against Candida sp isolated from human illnesses. The EO was obtained by hydrodistillation of A. triphylla leaves. The minimum inhibitory concentration (MIC) was performed with microdilution method and the minimum fungicidal concentration (MFC) was determined. A. triphylla EO's showed antifungal activity against all yeast: C. albicans, C. dubliniensis, C. glabrata, C. krusei, C. guillermondii, C. parapsilosis and C. tropicalis which were resistant to fluconazol (150 mg/mL). The range of MIC values was from: 35 to 140 μg/mL and the MFC: 1842 to 2300μg/mL. The time of killing at the MFC against C. albicans (3 × 105 UFC/mL) was 140 min. The dates of OD620 and OD260 suggest lysis and loss of absorbing material, respectively. The HROM shows distortion in morphology and shape of the cell, with large vacuoles in the cytoplasm. These studies clearly show that A. triphylla EO is a promising alternative for the treatment of candidiasis.
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Affiliation(s)
- María de las Mercedes Oliva
- Departmento de Microbiologia e Inmunología, Fac. de Ciencias Exactas, Fco-Qcas y Naturales. Universidad Nacional de Río Cuarto. Córdoba, Argentina
| | - María Evangelina Carezzano
- Departmento de Microbiologia e Inmunología, Fac. de Ciencias Exactas, Fco-Qcas y Naturales. Universidad Nacional de Río Cuarto. Córdoba, Argentina
| | - Mauro Nicolás Gallucci
- Departmento de Microbiologia e Inmunología, Fac. de Ciencias Exactas, Fco-Qcas y Naturales. Universidad Nacional de Río Cuarto. Córdoba, Argentina
| | - Mirta Susana Demo
- Departmento de Microbiologia e Inmunología, Fac. de Ciencias Exactas, Fco-Qcas y Naturales. Universidad Nacional de Río Cuarto. Córdoba, Argentina
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de Oliveira WA, de Oliveira Pereira F, de Luna GCDG, Lima IO, Wanderley PA, de Lima RB, de Oliveira Lima E. Antifungal activity of Cymbopogon winterianus jowitt ex bor against Candida albicans. Braz J Microbiol 2011; 42:433-41. [PMID: 24031651 PMCID: PMC3769829 DOI: 10.1590/s1517-83822011000200004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2010] [Revised: 05/22/2010] [Accepted: 11/04/2010] [Indexed: 11/21/2022] Open
Abstract
Candida albicans is an opportunistic yeast and a member of the normal human flora that commonly causes infections in patients with any type of deficiency of the immune system. The essential oils have been tested for antimycotic activity and pose much potential as antifungal agents. This work investigated the activity of the essential oil of Cymbopogon winterianus against C. albicans by MIC, MFC and time-kill methods. The essential oil (EO) was obtained by hydrodistillation using a Clevenger-type apparatus. It was tested fifteen strains of C. albicans. The MIC was determined by the microdilution method and the MFC was determined when an aliquot of the broth microdilution was cultivated in SDA medium. The phytochemical analysis of EO showed presence of citronellal (23,59%), geraniol (18,81%) and citronellol (11,74%). The EO showed antifungal activity, and the concentrations 625 µg/mL and 1250 µg/mL inhibited the growth of all strains tested and it was fungicidal, respectively. The antimicrobial activity of various concentrations of EO was analyzed over time, it was found concentration-dependent antifungal activity, whose behavior was similar to amphotericin B and nystatin.
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Affiliation(s)
- Wylly Araújo de Oliveira
- Laboratório de Tecnologia Farmacêutica, Centro de Ciências da Saúde, Universidade Federal da Paraíba , João Pessoa. PB , Brasil ; Centro de Educação e Saúde, Universidade Federal de Campina Grande , Cuité, PB , Brasil
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Sati S, Joshi S. Aspects of Antifungal Potential of Ethnobotanically Known Medicinal Plants. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/rjmp.2011.377.391] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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de Toledo CEM, Britta EA, Ceole LF, Silva ER, de Mello JCP, Dias Filho BP, Nakamura CV, Ueda-Nakamura T. Antimicrobial and cytotoxic activities of medicinal plants of the Brazilian cerrado, using Brazilian cachaça as extractor liquid. JOURNAL OF ETHNOPHARMACOLOGY 2011; 133:420-5. [PMID: 20951786 DOI: 10.1016/j.jep.2010.10.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Revised: 09/22/2010] [Accepted: 10/07/2010] [Indexed: 05/20/2023]
Abstract
ETHNOPHARMACOLOGICAL IMPORTANCE Many species of plants in the Brazilian cerrado (savanna) are widely used in ethnomedicine. However, the safety and effectiveness of medicinal plants used in communities with little or no access to manufactured drugs should be evaluated. AIM OF THE STUDY Evaluate the antimicrobial and cytotoxic activities of extracts from eight plant species, obtained using Brazilian cachaça as the extractor liquid. MATERIALS AND METHODS The extracts were tested against Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Candida albicans, Candida parapsilosis, promastigote forms of Leishmania amazonensis, and poliovirus. In addition, cytotoxic activity was assayed in Vero cells and in human erythrocytes. RESULTS The plant species Curatella americana, Sclerolobium aureum, and Plathymenia reticulata showed the best activity against yeasts, especially the crude extract of C. americana and its ethyl-acetate fraction. Kielmeyera lathrophyton showed a minimum inhibitory concentration of 250 μg/ml against S. aureus, and was inactive against gram-negative bacteria. The extract obtained from Annona coriacea showed the best activity against the promastigote forms of Leishmania amazonensis (IC(50)=175 μg/ml). Only C. americana showed potential for antipoliovirus activity. The concentrations of the crude extracts that showed toxicity to VERO cells had CC(50) between 31 and 470 μg/ml, and the lyophilized Brazilian cachaça showed a CC(50) of 307 μg/ml. None of the extracts showed toxicity against human erythrocytes. CONCLUSIONS Among the plant species studied, C. americana proved to be effective against microorganisms, especially as an antifungal. The results will help in the search for alternative drugs to be used in pharmacotherapy, and will contribute to establish safe and effective use of phytomedicines in the treatment of infectious diseases.
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Affiliation(s)
- Cleyton E M de Toledo
- Programa de Pós-graduação em Ciências Farmacêuticas, Universidade Estadual de Maringá, Av. Colombo 5790, Maringá, Brazil
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Prakash B, Shukla R, Singh P, Mishra PK, Dubey NK, Kharwar RN. Efficacy of chemically characterized Ocimum gratissimum L. essential oil as an antioxidant and a safe plant based antimicrobial against fungal and aflatoxin B1 contamination of spices. Food Res Int 2011. [DOI: 10.1016/j.foodres.2010.10.002] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Benini P, Schwan-Estrada K, Klais E, Cruz M, Itako A, Mesquini R, Stangarlin J, Tolentino Júnior J. EFEITO IN VITRO DO ÓLEO ESSENCIAL E EXTRATO AQUOSO DE OCIMUM GRATISSIMUM COLHIDO NAS QUATRO ESTAÇÕES DO ANO SOBRE FITOPATÓGENOS. ARQUIVOS DO INSTITUTO BIOLÓGICO 2010. [DOI: 10.1590/1808-1657v77p6772010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
RESUMO O trabalho foi desenvolvido para verificar o efeito do óleo essencial e do extrato bruto de alfavaca-cravo (Ocimum gratissimum), coletado nas quatro estações do ano, no crescimento micelial in vitro dos fungos Rhizoctonia solani, Sclerotium rolfsii, Phytophthora sp. e Alternaria alternata. Para avaliar o efeito do óleo essencial no crescimento micelial dos fungos, alíquotas de 20 ?L, 40 ?L e 60 ?L de óleo esterilizado foram distribuídas na superfície de meio BDA (batata-dextrose-ágar) antes da repicagem dos fungos. O extrato bruto aquoso (EBA) foi filtrado e incorporado em BDA nas concentrações de 1%, 5%, 10%, 15%, 20%, 25% e 50%. Os resultados indicaram que houve inibição total do crescimento micelial dos fungos nas diferentes alíquotas de óleo essencial. O EBA das plantas colhidas no outono proporcionou os melhores resultados, sendo que nesta estação do ano o EBA na concentração de 5% foi suficiente para promover 100% de inibição do crescimento micelial dos fitopatógenos A. alternata e S. rolfsii.
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Affiliation(s)
| | | | - E.C. Klais
- Universidade Estadual de Maringá, Brasil
| | | | - A.T. Itako
- Universidade Estadual de Maringá, Brasil
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Chemical composition and biological properties of Rhododendron anthopogon essential oil. Molecules 2010; 15:2326-38. [PMID: 20428045 PMCID: PMC6257328 DOI: 10.3390/molecules15042326] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Revised: 03/16/2010] [Accepted: 03/29/2010] [Indexed: 11/17/2022] Open
Abstract
The essential oil of Rhododendron anthopogon was investigated by GC-MS, and seventeen compounds (representing approximately 98% of the oil) were identified. The major components of the aerial parts of the oil were the monoterpenes α-pinene, β-pinene, limonene and the sesquiterpene δ-cadinene. Biological studies revealed a weak topical anti-inflammatory activity; a significant killing effect against some Gram-positive reference strains: Staphylococcus aureus, Enterococcusfecalis, Bacillus subtilis was measured; Mycobacterium tuberculosis reference strain and a clinical isolate of Candida, C. pseudotropicalis were killed by as low as 0.04% (v/v) essential oil. Moreover, the oil was able to reduce cancer cell growth independently of the cell line and the treatment protocols used.
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Moreira ACP, de Oliveira Lima E, Wanderley PA, Carmo ES, de Souza EL. Chemical composition and antifungal activity of Hyptis Suaveolens (L.) Poit leaves essential oil against Aspergillus species. Braz J Microbiol 2010; 41:28-33. [PMID: 24031459 PMCID: PMC3768604 DOI: 10.1590/s1517-83822010000100006] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2008] [Revised: 06/23/2009] [Accepted: 08/22/2009] [Indexed: 11/22/2022] Open
Abstract
This study aimed to identify the constituents of the essential oil from Hyptis suaveolens (L.) leaves using a Gas Chromatograph - Mass Spectrometer and assess its inhibitory effect on some potentially pathogenic Aspergilli (A. flavus, A. parasiticus, A. ochraceus, A. fumigatus and A. niger). Eucaliptol (47.64 %) was the most abundant component in the oil, followed for gama-ellemene (8.15 %), beta-pynene (6.55 %), (+)-3-carene (5.16 %), trans-beta-cariophyllene (4.69 %) and germacrene (4.86 %). The essential oil revealed an interesting anti-Aspergillus property characterized by a Minimum Inhibitory Concentration and Minimum Fungicidal Concentration of 40 and 80 µL/mL, respectively. The oil at 80 and 40 µL/mL strongly inhibited the mycelial growth of A. fumigatus and A. parasiticus along 14 days. In addition, at 10 and 20 µL/mL the oil was able to cause morphological changes in A. flavus as decreased conidiation, leakage of cytoplasm, loss of pigmentation and disrupted cell structure suggesting fungal wall degeneration. These findings showed the interesting anti-Aspergillus property of H. suaveolens leaves essential oil supporting its possible rational use as alternative source of new antifungal compounds to be applied in the aspergillosis treatment.
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Ali I, Khan FG, Suri KA, Gupta BD, Satti NK, Dutt P, Afrin F, Qazi GN, Khan IA. In vitro antifungal activity of hydroxychavicol isolated from Piper betle L. Ann Clin Microbiol Antimicrob 2010; 9:7. [PMID: 20128889 PMCID: PMC2841090 DOI: 10.1186/1476-0711-9-7] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Accepted: 02/03/2010] [Indexed: 11/30/2022] Open
Abstract
Background Hydroxychavicol, isolated from the chloroform extraction of the aqueous leaf extract of Piper betle L., (Piperaceae) was investigated for its antifungal activity against 124 strains of selected fungi. The leaves of this plant have been long in use tropical countries for the preparation of traditional herbal remedies. Methods The minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of hydroxychavicol were determined by using broth microdilution method following CLSI guidelines. Time kill curve studies, post-antifungal effects and mutation prevention concentrations were determined against Candida species and Aspergillus species "respectively". Hydroxychavicol was also tested for its potential to inhibit and reduce the formation of Candida albicans biofilms. The membrane permeability was measured by the uptake of propidium iodide. Results Hydroxychavicol exhibited inhibitory effect on fungal species of clinical significance, with the MICs ranging from 15.62 to 500 μg/ml for yeasts, 125 to 500 μg/ml for Aspergillus species, and 7.81 to 62.5 μg/ml for dermatophytes where as the MFCs were found to be similar or two fold greater than the MICs. There was concentration-dependent killing of Candida albicans and Candida glabrata up to 8 × MIC. Hydroxychavicol also exhibited an extended post antifungal effect of 6.25 to 8.70 h at 4 × MIC for Candida species and suppressed the emergence of mutants of the fungal species tested at 2 × to 8 × MIC concentration. Furthermore, it also inhibited the growth of biofilm generated by C. albicans and reduced the preformed biofilms. There was increased uptake of propidium iodide by C. albicans cells when exposed to hydroxychavicol thus indicating that the membrane disruption could be the probable mode of action of hydroxychavicol. Conclusions The antifungal activity exhibited by this compound warrants its use as an antifungal agent particularly for treating topical infections, as well as gargle mouthwash against oral Candida infections.
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Affiliation(s)
- Intzar Ali
- Clinical Microbiology Division Indian Institute of Integrative Medicine, Canal Road, Jammu-180 001, India
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Iroanya O, Okpuzor J, Mbagwu H. Anti-Nociceptive and Anti-Phlogistic Actions of a Polyherbal Decoction. INT J PHARMACOL 2009. [DOI: 10.3923/ijp.2010.31.36] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Nweze EI, Eze EE. Justification for the use of Ocimum gratissimum L in herbal medicine and its interaction with disc antibiotics. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2009; 9:37. [PMID: 19785729 PMCID: PMC2762446 DOI: 10.1186/1472-6882-9-37] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Accepted: 09/28/2009] [Indexed: 11/29/2022]
Abstract
BACKGROUND The ethanolic extract of the leaves of Ocimium gratisimum L. (Lamiaceae), used in traditional medicine for the treatment of several ailments such as urinary tract, wound, skin and gastrointestinal infections, was evaluated for its antibacterial properties against four clinical bacteria isolates namely: Escherichia coli, Proteus mirabilis, Staphylococcus aureus and Pseudomonas aeruginosa and the antifungal properties using a clinical isolate of Candida albicans. A typed bacterium of Escherichia coli ATCC 11775 and another typed fungal strain of Candida albicans (ATCC 90028) were also included. The study also intended to verify if the concomitant administration of conventional antibiotics with Ocimium gratisimum which is normally taken as food (spice) will negatively affect its activity. METHODS The agar diffusion method was used to test the in vitro activity of the plant extract. The interaction of the plant extract with some disc antibiotics namely: ciprofloxacin, septrin, streptomycin, ampicillin, nystatin and ketoconazole was tested using the agar overlay inoculum susceptibility disc method. Phytochemical analysis of the extract was performed following established methods. RESULTS The extract showed good but varying in vitro activities against all the isolates tested. While ampicillin showed synergistic interaction with the plant extract against clinical isolates of E. coli and P. mirabilis, septrin was synergistic against the clinical isolate of E. coli only. Similarly, the activity of the extract against C. albicans isolate was synergistic with ketoconazole and nystatin. CONCLUSION The study has validated the folkloric use of O. gratissimum in traditional medicinal practice and goes further to show that the use of this plant material as food spice may not really threaten the efficacy of some conventional antibiotics that may have been taken concomitantly with it as is the popular belief in the practice of herbal medicine in local/rural communities of many countries in the world.
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Affiliation(s)
- Emeka I Nweze
- Department of Microbiology, University of Nigeria, Nsukka, Enugu State, Nigeria
- Department of Dermatology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Elizabeth E Eze
- Department of Microbiology, University of Nigeria, Nsukka, Enugu State, Nigeria
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Mahapatra SK, Chakraborty SP, Das S, Roy S. Methanol extract of Ocimum gratissimum protects murine peritoneal macrophages from nicotine toxicity by decreasing free radical generation, lipid and protein damage and enhances antioxidant protection. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2009; 2:222-30. [PMID: 20716908 PMCID: PMC2763260 DOI: 10.4161/oxim.2.4.9000] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Revised: 05/13/2009] [Accepted: 05/13/2009] [Indexed: 11/19/2022]
Abstract
In the present study, methanol extract of Ocimum gratissimum Linn (ME-Og) was tested against nicotine-induced murine peritoneal macrophage in vitro. Phytochemical analysis of ME-Og shown high amount of flavonoid and phenolic compound present in it. The cytotoxic effect of ME-Og was studied in murine peritoneal macrophages at different concentrations (0.1 to 100 microg/ml) using the 3-(4, 5-dimethylthiazol-2-yl)-2, 5 diphenyltetrazolium bromide (MTT) method. To establish the protective role of ME-Og against nicotine toxicity, peritoneal macrophages from mice were treated with nicotine (10 mM), nicotine+ME-Og (1 to 25 microg/ml) for 12h in culture media. The significantly (P< 0.05) increased super oxide anion generation, reduced nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity, myeloperoxidase (MPO) activity, lipid peroxidation, protein carbonyls, oxidized glutathione levels were observed in nicotine-treated group as compared to control group; those were significantly (p < 0.05) reduced in ME-Og supplemented groups in concentration dependent manner. More over, significantly (p < 0.05) reduced antioxidant status due to nicotine exposure was effectively ameliorated by ME-Og supplementation in murine peritoneal macrophages. Among the different concentration of ME-Og, maximum protective effect was observed by 25 microg/ml, which does not produce significant cell cytotoxicity in murine peritoneal macrophages. These findings suggest the potential use and beneficial role of O. gratissimum as a modulator of nicotine-induced free radical generation, lipid-protein damage and antioxidant status in important immune cell, peritoneal macrophages.
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Affiliation(s)
- Santanu Kar Mahapatra
- Immunology and Microbiology Laboratory, Department of Human Physiology, Community Health, Vidyasagar University, Midnapore, West Bengal, India
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Soylu S, Yigitbas H, Soylu EM, Kurt S. Antifungal effects of essential oils from oregano and fennel onSclerotinia sclerotiorum. J Appl Microbiol 2007; 103:1021-30. [PMID: 17897206 DOI: 10.1111/j.1365-2672.2007.03310.x] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS The antifungal effects of essential oils of oregano (Origanum syriacum var. bevanii) and fennel (Foeniculum vulgare) were evaluated against Sclerotinia sclerotiorum. Effects of the essential oils on morphological structures of hyphae and sclerotia were studied under light and scanning electron microscopes (SEM). METHODS AND RESULTS Inhibitory effects of volatile and contact phases of the essential oils used were determined on hyphae and sclerotia. Both essential oils have a marked antifungal effect against S. sclerotiorum. Soil amendment with essential oils has significant effect on reducing sclerotial viability. Both essential oils significantly inhibited the fungal growth in soil, thereby increasing the number of surviving tomato seedling by 69.8% and 53.3%, respectively. Light and SEM observations on pathogen hyphae and sclerotia revealed considerable morphological alterations in hyphae and sclerotia. CONCLUSIONS The significant reduction in the mycelial growth and germination of sclerotia would greatly reduce the pathogen inoculum source. This may influence the rate of disease development in soil. SIGNIFICANCE AND IMPACT OF THE STUDY Considering the reduction in the number of diseased plants in infested soil amended with essential oils, we concluded that oregano and fennel essential oils could be used as possible bio fungicides alternative to synthetic fungicides against phytopathogenic fungi.
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Affiliation(s)
- S Soylu
- Mustafa Kemal University, Department of Plant Protection, Faculty of Agriculture, Antakya, Hatay, Turkey.
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LEAL PATRÍCIAF, CHAVES FCÉLIOM, MING LINC, PETENATE ADEMIRJ, MEIRELES MANGELAA. GLOBAL YIELDS, CHEMICAL COMPOSITIONS AND ANTIOXIDANT ACTIVITIES OF CLOVE BASIL (OCIMUM GRATISSIMUM L.) EXTRACTS OBTAINED BY SUPERCRITICAL FLUID EXTRACTION. J FOOD PROCESS ENG 2006. [DOI: 10.1111/j.1745-4530.2006.00082.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Ueda-Nakamura T, Mendonça-Filho RR, Morgado-Díaz JA, Korehisa Maza P, Prado Dias Filho B, Aparício Garcia Cortez D, Alviano DS, Rosa MDSS, Lopes AHCS, Alviano CS, Nakamura CV. Antileishmanial activity of Eugenol-rich essential oil from Ocimum gratissimum. Parasitol Int 2006; 55:99-105. [PMID: 16343984 DOI: 10.1016/j.parint.2005.10.006] [Citation(s) in RCA: 131] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2005] [Accepted: 10/28/2005] [Indexed: 10/25/2022]
Abstract
Leishmaniasis is a group of diseases with a large spectrum of clinical manifestations caused by protozoans of the genus Leishmania. Here we demonstrate the leishmanicidal activity of the essential oil of Ocimum gratissimum as well as its main constituent, eugenol. The eugenol-rich essential oil of O. gratissimum progressively inhibited Leishmania amazonensis growth at concentrations ranging from 100 to 1000 microg/ml. The IC50 (sub-inhibitory concentration) of the essential oil for promastigotes and amastigotes were respectively 135 and 100 microg/ml and the IC50 of eugenol was 80 microg/ml for promastigote forms. L. amazonensis exposed to essential oil at concentrations corresponding to IC50 for promastigotes and for amastigotes underwent considerable ultrastructural alterations, as shown by transmission electron microscopy. Two or more nuclei or flagella were observed in 31% and 23.3% of treated amastigote and promastigote forms, respectively, suggesting interference in cell division. Considerable mitochondrial swelling was observed in essential oil-treated promastigotes and amastigotes, which had the inner mitochondrial membrane altered, with a significant increase in the number of cristae; in some amastigotes the mitochondrial matrix became less electron-dense. The minimum inhibitory concentration for both promastigotes and amastigotes was 150 microg/ml. Pretreatment of mouse peritoneal macrophages with 100 and 150 microg/ml essential oil reduced the indices of association between promastigotes and the macrophages, followed by increased in nitric oxide production by the infected macrophages. The essential oil showed no cytototoxic effects against mammalian cells. This set of results suggests that O. gratissimum essential oil and its compounds could be used as sources for new antileishmanial drugs.
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Affiliation(s)
- Tânia Ueda-Nakamura
- Programa de Pós-graduação em Ciências Farmacêuticas, Universidade Estadual de Maringá, Brazil
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Mincoff PC, Garcia Cortez DA, Ueda-Nakamura T, Nakamura CV, Dias Filho BP. Isolation and characterization of a 30 kD antifungal protein from seeds of Sorghum bicolor. Res Microbiol 2006; 157:326-32. [PMID: 16364603 DOI: 10.1016/j.resmic.2005.09.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2005] [Revised: 05/19/2005] [Accepted: 09/26/2005] [Indexed: 11/22/2022]
Abstract
An antifungal protein of about 30,000 Da was isolated from seeds of Sorghum bicolor L. using chromatographic techniques, including gel filtration, ion exchange, and high-performance liquid chromatography in a reverse-phase column. This protein (termed 30 kD protein) showed a minimal inhibitory concentration of 36 microg/ml for Candida parapsilosis and C. tropicalis, and 18 microg/ml for C. albicans. The 30 kD protein inhibited adherence to the cover glass and formation of a germinative tube of C. albicans at concentrations over 300 and 150 microg/ml, respectively. Transmission electron microscopy of yeast forms of C. albicans after incubation with 18 mug/ml of the 30 kD protein for 24 h revealed marked ultrastructural changes in the fungus. No toxicity of the 30 kD protein to the culture of Hep2 cells at concentrations equal to or less than 1,000 microg/ml was observed.
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Affiliation(s)
- Patricia Costa Mincoff
- Programa de Pós-graduação em Ciências Farmacêuticas, Universidade Estadual de Maringá, Av. Colombo, 5790, 87020-900 Maringá, PR, Brazil
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Soylu EM, Soylu S, Kurt S. Antimicrobial Activities of the Essential Oils of Various Plants against Tomato Late Blight Disease Agent Phytophthora infestans. Mycopathologia 2006; 161:119-28. [PMID: 16463095 DOI: 10.1007/s11046-005-0206-z] [Citation(s) in RCA: 186] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2005] [Accepted: 10/26/2005] [Indexed: 10/25/2022]
Abstract
The aim of this study was to find an alternative to synthetic fungicides currently used in the control of devastating oomycete pathogen Phytophthora infestans, causal agent of late blight disease of tomato. Antifungal activities of essential oils obtained from aerial parts of aromatic plants such as oregano (Origanum syriacum var. bevanii), thyme (Thymbra spicata subsp. spicata), lavender (Lavandula stoechas subsp. stoechas), rosemary (Rosmarinus officinalis), fennel (Foeniculum vulgare), and laurel (Laurus nobilis), were investigated against P. infestans. Both contact and volatile phase effects of different concentrations of the essential oils used were determined by using two in vitro methods. Chemical compositions of the essential oils were also determined by GC-MS analysis. Major compounds found in essential oils of thyme, oregano, rosemary, lavender, fennel and laurel were carvacrol (37.9%), carvacrol (79.8), borneol (20.4%), camphor (20.2%), anethole (82.8%) and 1,8-cineole (35.5%), respectively. All essential oils were found to inhibit the growth of P. infestans in a dose-dependent manner. Volatile phase effect of oregano and thyme oils at 0.3 microg/ml air was found to completely inhibit the growth of P. infestans. Complete growth inhibition of pathogen by essential oil of fennel, rosemary, lavender and laurel was, however, observed at 0.4-2.0 microg/ml air concentrations. For the determination of the contact phase effects of the tested essential oils, oregano, thyme and fennel oils at 6.4 microg/ml were found to inhibit the growth of P. infestans completely. Essential oils of rosemary, lavender and laurel were inhibitory at relatively higher concentrations (12.8, 25.6, 51.2 microg/ml respectively). Volatile phase effects of essential oils were consistently found to be more effective on fungal growth than contact phase effect. Sporangial production was also inhibited by the essential oil tested. Light and scanning electron microscopic (SEM) observation on pathogen hyphae, exposed to both volatile and contact phase of oil, revealed considerable morphological alterations in hyphae such as cytoplasmic coagulation, vacuolations, hyphal shrivelling and protoplast leakage.
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Affiliation(s)
- E Mine Soylu
- Department of Plant Protection, Faculty of Agriculture, Mustafa Kemal University, 31034, Antakya-Hatay, Turkey.
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Current awareness in flavour and fragrance. FLAVOUR FRAG J 2005. [DOI: 10.1002/ffj.1536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Current awareness on yeast. Yeast 2005; 22:241-8. [PMID: 15762016 DOI: 10.1002/yea.1159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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