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Nunes AP, Dos Santos YM, da Silva Sanfelice RA, Concato-Lopes VM, Silva TF, Tomiotto-Pellissier F, Lazarin-Bidoia D, Machado RRB, de Barros LD, Garcia JL, Conchon-Costa I, Pavanelli WR, Kobayashi RKT, de Freitas Barbosa B, Ferro EAV, Costa IN. Essential oil of oregano (Origanum vulgare L.) reduces infection and proliferation of Toxoplasma gondii in BeWo cells with induction of autophagy and death of tachyzoites through a mechanism similar to necrosis. Parasitol Res 2024; 123:217. [PMID: 38772951 DOI: 10.1007/s00436-024-08231-z] [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: 02/19/2024] [Accepted: 05/02/2024] [Indexed: 05/23/2024]
Abstract
Toxoplasmosis poses a global health threat, ranging from asymptomatic cases to severe, potentially fatal manifestations, especially in immunocompromised individuals and congenital transmission. Prior research suggests that oregano essential oil (OEO) exhibits diverse biological effects, including antiparasitic activity against Toxoplasma gondii. Given concerns about current treatments, exploring new compounds is important. This study was to assess the toxicity of OEO on BeWo cells and T. gondii tachyzoites, as well as to evaluate its effectiveness in in vitro infection models and determine its direct action on free tachyzoites. OEO toxicity on BeWo cells and T. gondii tachyzoites was assessed by MTT and trypan blue methods, determining cytotoxic concentration (CC50), inhibitory concentration (IC50), and selectivity index (SI). Infection and proliferation indices were analyzed. Direct assessments of the parasite included reactive oxygen species (ROS) levels, mitochondrial membrane potential, necrosis, and apoptosis, as well as electron microscopy. Oregano oil exhibited low cytotoxicity on BeWo cells (CC50: 114.8 µg/mL ± 0.01) and reduced parasite viability (IC50 12.5 ± 0.06 µg/mL), demonstrating 9.18 times greater selectivity for parasites than BeWo cells. OEO treatment significantly decreased intracellular proliferation in infected cells by 84% after 24 h with 50 μg/mL. Mechanistic investigations revealed increased ROS levels, mitochondrial depolarization, and lipid droplet formation, linked to autophagy induction and plasma membrane permeabilization. These alterations, observed through electron microscopy, suggested a necrotic process confirmed by propidium iodide labeling. OEO treatment demonstrated anti-T. gondii action through cellular and metabolic change while maintaining low toxicity to trophoblastic cells.
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Affiliation(s)
- Angélica Paulina Nunes
- Department of Immunology, Parasitology and General Pathology - Laboratory of Experimental Immunoparasitology, State University of Londrina, Londrina, Paraná, Brazil
| | - Yasmin Munhoz Dos Santos
- Department of Immunology, Parasitology and General Pathology - Laboratory of Experimental Immunoparasitology, State University of Londrina, Londrina, Paraná, Brazil
| | - Raquel Arruda da Silva Sanfelice
- Department of Immunology, Parasitology and General Pathology - Laboratory of Experimental Immunoparasitology, State University of Londrina, Londrina, Paraná, Brazil
| | - Virgínia Marcia Concato-Lopes
- Department of Immunology, Parasitology and General Pathology - Laboratory of Immunoparasitology of Neglected Diseases and Cancer, State University of Londrina, Londrina, Paraná, Brazil
| | - Taylon Felipe Silva
- Department of Immunology, Parasitology and General Pathology - Laboratory of Immunoparasitology of Neglected Diseases and Cancer, State University of Londrina, Londrina, Paraná, Brazil
| | - Fernanda Tomiotto-Pellissier
- Department of Immunology, Parasitology and General Pathology - Laboratory of Immunoparasitology of Neglected Diseases and Cancer, State University of Londrina, Londrina, Paraná, Brazil
| | - Danielle Lazarin-Bidoia
- Department of Immunology, Parasitology and General Pathology - Laboratory of Immunoparasitology of Neglected Diseases and Cancer, State University of Londrina, Londrina, Paraná, Brazil
| | - Rayanne Regina Beltrame Machado
- Department of Immunology, Parasitology and General Pathology - Laboratory of Immunoparasitology of Neglected Diseases and Cancer, State University of Londrina, Londrina, Paraná, Brazil
| | - Luiz Daniel de Barros
- Department of Veterinary Medicine - Laboratory of Animal Protozoology, State University of Londrina, Londrina, Paraná, Brazil
| | - João Luis Garcia
- Department of Veterinary Medicine - Laboratory of Animal Protozoology, State University of Londrina, Londrina, Paraná, Brazil
| | - Ivete Conchon-Costa
- Department of Immunology, Parasitology and General Pathology - Laboratory of Immunoparasitology of Neglected Diseases and Cancer, State University of Londrina, Londrina, Paraná, Brazil
| | - Wander Rogério Pavanelli
- Department of Immunology, Parasitology and General Pathology - Laboratory of Immunoparasitology of Neglected Diseases and Cancer, State University of Londrina, Londrina, Paraná, Brazil
| | | | - Bellisa de Freitas Barbosa
- Department of Cell Biology, Histology and Embryology - Laboratory of Reproduction Immunophysiology, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Eloisa Amália Vieira Ferro
- Department of Cell Biology, Histology and Embryology - Laboratory of Reproduction Immunophysiology, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Idessania Nazareth Costa
- Department of Immunology, Parasitology and General Pathology - Laboratory of Experimental Immunoparasitology, State University of Londrina, Londrina, Paraná, Brazil.
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Zhou X, Zeng M, Huang F, Qin G, Song Z, Liu F. The potential role of plant secondary metabolites on antifungal and immunomodulatory effect. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12601-5. [PMID: 37272939 DOI: 10.1007/s00253-023-12601-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/13/2023] [Accepted: 05/17/2023] [Indexed: 06/06/2023]
Abstract
With the widespread use of antibiotic drugs worldwide and the global increase in the number of immunodeficient patients, fungal infections have become a serious threat to global public health security. Moreover, the evolution of fungal resistance to existing antifungal drugs is on the rise. To address these issues, the development of new antifungal drugs or fungal inhibitors needs to be targeted urgently. Plant secondary metabolites are characterized by a wide variety of chemical structures, low price, high availability, high antimicrobial activity, and few side effects. Therefore, plant secondary metabolites may be important resources for the identification and development of novel antifungal drugs. However, there are few studies to summarize those contents. In this review, the antifungal modes of action of plant secondary metabolites toward different types of fungi and fungal infections are covered, as well as highlighting immunomodulatory effects on the human body. This review of the literature should lay the foundation for research into new antifungal drugs and the discovery of new targets. KEY POINTS: • Immunocompromised patients who are infected the drug-resistant fungi are increasing. • Plant secondary metabolites toward various fungal targets are covered. • Plant secondary metabolites with immunomodulatory effect are verified in vivo.
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Affiliation(s)
- Xue Zhou
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Meng Zeng
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Fujiao Huang
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Gang Qin
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Zhangyong Song
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China.
- Molecular Biotechnology Platform, Public Center of Experimental Technology, Southwest Medical University, Luzhou, 646000, People's Republic of China.
| | - Fangyan Liu
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China.
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Fernandes L, Costa R, Silva S, Henriques M, Costa-de-Oliveira S, Rodrigues ME. Effect of Vapor-Phase Oregano Essential Oil on Resistant Candida Species Biofilms: Mechanisms of Action. Microbiol Spectr 2023; 11:e0512422. [PMID: 36971589 PMCID: PMC10100680 DOI: 10.1128/spectrum.05124-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 03/06/2023] [Indexed: 03/29/2023] Open
Abstract
Vulvovaginal candidiasis (VVC) is one of the most prevalent vaginal infectious diseases. The increasing incidence of drug-resistant Candida strains and the limited therapeutic options make the discovery of effective alternative therapies fundamental. Essential oils (EOs) have been suggested as a promising alternative, and interestingly, vapor-phase essential oils (VP-EOs) present more advantages than their direct application. Thus, this study aims to evaluate the effect of oregano VP-EO (VP-OEO) on biofilms of antifungal-resistant vaginal isolates of Candida species (Candida albicans and Candida glabrata) and determine its mode of action. CFU, membrane integrity, and metabolic activity were evaluated. Furthermore, a reconstituted vaginal epithelium was used to mimic vaginal conditions and evaluate the effect of VP-OEO on Candida species infection, analyzed by DNA quantification, microscopy, and lactate dehydrogenase activity. The results revealed high VP-OEO antifungal activity. There was a significant reduction (>4 log CFU) in Candida species biofilms. Furthermore, the results show that the mechanisms of action of VP-OEO are related to membrane integrity and metabolic activity. The epithelium model confirms the effectiveness of VP-OEO. This study suggests that VP-EO can be considered a first approach for the development of an alternative form of VVC treatment. IMPORTANCE This work presents a new approach to the application of essential oils, exposure to the vapor phase, which can be considered a first approach for the development of a complementary or alternative form of vulvovaginal candidiasis (VVC) treatment. VVC is a significant infection caused by Candida species and remains a common disease that affects millions of women every year. The great difficulty in treating VVC and the extremely limited effective therapeutic options make the development of alternative treatments crucial. In this scope, this study aims to contribute to the development of effective, inexpensive, and nontoxic strategies for the prevention and treatment of this infectious disease, based on natural products. Moreover, this new approach has several advantages for women, such as lower costs, easy access, an easier mode of application, avoidance of skin contact, and, therefore, fewer negative impacts on women's health.
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Affiliation(s)
- Liliana Fernandes
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, University of Minho, Campus de Gualtar, Braga, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
| | - Raquel Costa
- Aromas Aqua Spa—Clínica Saúde, Vila Verde, Braga, Portugal
| | - Sónia Silva
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, University of Minho, Campus de Gualtar, Braga, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
- National Institute for Agrarian and Veterinary Research, Vairão, Vila do Conde, Portugal
| | - Mariana Henriques
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, University of Minho, Campus de Gualtar, Braga, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
| | - Sofia Costa-de-Oliveira
- Division of Microbiology, Department of Pathology, Faculty of Medicine, University of Porto, Porto, Portugal
- Center for Health Technology and Services Research—CINTESIS@RISE, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Maria E. Rodrigues
- Centre of Biological Engineering, LMaS—Laboratório de Microbiologia Aplicada à Saúde, University of Minho, Campus de Gualtar, Braga, Portugal
- LABBELS—Associate Laboratory, Braga/Guimarães, Portugal
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Santos AS, Borges Dos Anjos LR, Costa VAF, Freitas VAQ, Zara ALDSA, Costa CR, Neves BJ, Silva MDRR. In silico-chemogenomic repurposing of new chemical scaffolds for histoplasmosis treatment. J Mycol Med 2023; 33:101363. [PMID: 36842411 DOI: 10.1016/j.mycmed.2023.101363] [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: 09/27/2022] [Revised: 01/10/2023] [Accepted: 02/10/2023] [Indexed: 02/13/2023]
Abstract
BACKGROUND Histoplasmosis is a systemic form of endemic mycosis to the American continent and may be lethal to people living with HIV/AIDS. The drugs available for treating histoplasmosis are limited, costly, and highly toxic. New drug development is time-consuming and costly; hence, drug repositioning is an advantageous strategy for discovering new therapeutic options. OBJECTIVE This study was conducted to identify drugs that can be repositioned for treating histoplasmosis in immunocompromised patients. METHODS Homologous proteins among Histoplasma capsulatum strains were selected and used to search for homologous targets in the DrugBank and Therapeutic Target Database. Essential genes were selected using Saccharomyces cerevisiae as a model, and functional regions of the therapeutic targets were analyzed. The antifungal activity of the selected drugs was verified, and homology modeling and molecular docking were performed to verify the interactions between the drugs with low inhibitory concentration values and their corresponding targets. RESULTS We selected 149 approved drugs with potential activity against histoplasmosis, among which eight were selected for evaluating their in vitro activity. For drugs with low minimum inhibitory concentration values, such as mebendazole, everolimus, butenafine, and bifonazole, molecular docking studies were performed. A chemogenomic framework revealed lanosterol 14-α-demethylase, squalene monooxygenase, serine/threonine-protein kinase mTOR, and the β-4B tubulin chain of H. capsulatum, respectively, as the protein targets of the drugs. CONCLUSIONS Our strategy can be used to identify promising antifungal targets, and drugs with repositioning potential for treating H. capsulatum.
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Affiliation(s)
- Andressa Santana Santos
- Institute of Tropical Pathology and Public Health (IPTSP), Federal University of Goiás, Goiânia, Brazil
| | | | | | | | | | - Carolina Rodrigues Costa
- Institute of Tropical Pathology and Public Health (IPTSP), Federal University of Goiás, Goiânia, Brazil
| | - Bruno Junior Neves
- Laboratory of Cheminformatics (LabChem), Faculty of Pharmacy, Federal University of Goiás, Goiânia, Brazil
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Formation and Characterization of Oregano Essential Oil Nanocapsules Applied onto Polyester Textile. Polymers (Basel) 2022; 14:polym14235188. [PMID: 36501585 PMCID: PMC9736421 DOI: 10.3390/polym14235188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 12/03/2022] Open
Abstract
Oregano essential oil was encapsulated in poly-ϵ-caprolactone nanoparticles by a nanoprecipitation method using glycerin as a moisturizer. Nanocapsule characterization was performed by measuring the particle size, colloidal stability and encapsulation efficiency using dynamic light scattering, UV-Vis spectrophotometry and scanning electron microscopy (SEM). The nanoparticles had a mean particle size of 235 nm with a monomodal distribution. In addition, a low polydispersity index was obtained, as well as a negative zeta potential of -36.3 mV and an encapsulation efficiency of 75.54%. Nanocapsules were applied to polyester textiles through bath exhaustion and foulard processing. Citric acid and a resin were applied as crosslinking agents to improve the nanocapsules' adhesion to the fabric. The adsorption, desorption, moisture content and essential oil extraction were evaluated to determine the affinity between the nanocapsules and the polyester. The adsorption was higher when the citric acid and the resin were applied. When standard oregano nanocapsules were used, almost all of the impregnated nanoparticles were removed when washed with water. The moisture content was evaluated for treated and non-treated textiles. There was a significant increase in the moisture content of the treated polyester compared to the non-treated polyester, which indicates that the polyester hydrophilicity increased with an important absorption of the essential oil nanocapsules; this can improve fabric comfort and probably promote antibacterial properties.
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Aleksić A, Stojanović-Radić Z, Harmanus C, Kuijper E, Stojanović P. In vitro anti-clostridial action and potential of the spice herbs essential oils to prevent biofilm formation of hypervirulent Clostridioides difficile strains isolated from hospitalized patients with CDI. Anaerobe 2022; 76:102604. [PMID: 35709937 DOI: 10.1016/j.anaerobe.2022.102604] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Clostridioides difficile is the most common causative agent of antibiotic-acquired diarrhea in hospitalized patients associated with substantial morbidity and mortality. The global epidemic of CDI (Clostridioides difficile infection) began in the early 20th century with the emergence of the hypervirulent and resistant ribotype 027 strains, and requires an urgent search for new therapeutic agents. OBJECTIVE The aim of this study is to investigate the antibacterial activity of the three essential oils isolated from spice herbs (wild oregano, garlic and black pepper) against C. difficile clinical isolates belonging to 6 different PCR ribotypes and their potential inhibitory effect on the biofilm production in in vitro conditions. RESULTS Wild oregano essential oil showed strong inhibitory activity in concentrations 0.02-1.25 mg/mL and bactericidal activity in concentrations from 0.08 to 10 mg/mL. Garlic essential oil was effective in the concentration range of 0.02-40 mg/mL, and 0.16 - > 40 mg/mL. MIC and MBC for black pepper oil ranged from 0.04 to 40 mg/mL, and 0.08 - > 40 mg/mL, respectively. All the tested oils reduced in vitro biofilm production, with the best activity of oregano oil. CONCLUSION Essential oils of wild oregano, black pepper and garlic are candidates for adjunctive therapeutics in the treatment of CDI. Oregano oil should certainly be preferred due to the lack of selectivity of action in relation to the ribotype, the strength of the produced biofilm and/or antibiotic-susceptibility patterns.
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Affiliation(s)
- Ana Aleksić
- Faculty of Sciences and Mathematics, Department of Biology and Ecology, University of Nis, Serbia
| | - Zorica Stojanović-Radić
- Faculty of Sciences and Mathematics, Department of Biology and Ecology, University of Nis, Serbia.
| | - Celine Harmanus
- National Reference Laboratory for Clostridioides Difficile, Department of Medical Microbiology, Leiden University Medical Center, Leiden, the Netherlands
| | - EdJ Kuijper
- National Reference Laboratory for Clostridioides Difficile, Department of Medical Microbiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Predrag Stojanović
- Faculty of Medicine, University of Nis, Serbia; Institute for Public Health Nis, Center of Microbiology, Serbia
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Chukwudozie IK, Ezeonu IM. ANTIMICROBIAL PROPERTIES AND ACUTE TOXICITY EVALUATION OF Pycnanthus angolensis STEM BARK. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Cid-Chevecich C, Müller-Sepúlveda A, Jara JA, López-Muñoz R, Santander R, Budini M, Escobar A, Quijada R, Criollo A, Díaz-Dosque M, Molina-Berríos A. Origanum vulgare L. essential oil inhibits virulence patterns of Candida spp. and potentiates the effects of fluconazole and nystatin in vitro. BMC Complement Med Ther 2022; 22:39. [PMID: 35139827 PMCID: PMC8827202 DOI: 10.1186/s12906-022-03518-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 01/17/2022] [Indexed: 12/19/2022] Open
Abstract
Background Recurrence and resistance of Candida spp. infections is associated with the ability of these microorganisms to present several virulence patterns such as morphogenesis, adhesion, and biofilm formation. In the search for agents with antivirulence activity, essential oils could represent a strategy to act against biofilms and to potentiate antifungal drugs. Objective To evaluate the antivirulence effect of Origanum vulgare L. essential oil (O-EO) against Candida spp. and to potentiate the effect of fluconazole and nystatin. Methods The effect of O-EO was evaluated on ATCC reference strains of C. albicans and non-albicans Candida species. Minimum inhibitory concentration (MIC) was determined through broth microdilution assay. Adhesion to microplates was determined by crystal violet (CV) assay. An adapted scratch assay in 24-well was used to determine the effect of essential oil on biofilms proliferation. Viability of biofilms was evaluated by MTT reduction assay and through a checkerboard assay we determined if O-EO could act synergistically with fluconazole and nystatin. Results MIC for C. albicans ATCC-90029 and ATCC-10231 was 0.01 mg/L and 0.97 mg/L, respectively. For non-albicans Candida strains MIC values were 2.6 mg/L for C. dubliniensis ATCC-CD36 and 5.3 mg/L for C. krusei ATCC-6258. By using these concentrations, O-EO inhibited morphogenesis, adhesion, and proliferation at least by 50% for the strains assayed. In formed biofilms O-EO decreased viability in ATCC 90029 and ATCC 10231 strains (IC50 7.4 and 2.8 mg/L respectively). Finally, we show that O-EO interacted synergistically with fluconazole and nystatin. Conclusions This study demonstrate that O-EO could be considered to improve the antifungal treatment against Candida spp. Supplementary Information The online version contains supplementary material available at 10.1186/s12906-022-03518-z.
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Affiliation(s)
- Camila Cid-Chevecich
- Laboratory of Pharmacology, Institute for Research in Dental Sciences (ICOD), Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile
| | - Andrea Müller-Sepúlveda
- Institute of Agrifood, Animals and Environmental Sciences, Universidad de O'Higgins, San Fernando, Chile
| | - José Antonio Jara
- Laboratory of Pharmacology, Institute for Research in Dental Sciences (ICOD), Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile
| | - Rodrigo López-Muñoz
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Rocío Santander
- Department of Environmental Sciences, Faculty of Chemistry and Biology, Universidad de Santiago de Chile, Santiago, Chile
| | - Mauricio Budini
- Laboratory of Pharmacology, Institute for Research in Dental Sciences (ICOD), Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile
| | - Alejandro Escobar
- Laboratory of Pharmacology, Institute for Research in Dental Sciences (ICOD), Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile
| | - Raúl Quijada
- Faculty of Physical and Mathematical Sciences, Universidad de Chile, Santiago, Chile
| | - Alfredo Criollo
- Laboratory of Pharmacology, Institute for Research in Dental Sciences (ICOD), Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile
| | - Mario Díaz-Dosque
- Laboratory of Pharmacology, Institute for Research in Dental Sciences (ICOD), Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile.
| | - Alfredo Molina-Berríos
- Laboratory of Pharmacology, Institute for Research in Dental Sciences (ICOD), Faculty of Dentistry, University of Chile, Olivos 943, Independencia, Santiago, Chile.
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Lu H, Butler JA, Britten NS, Venkatraman PD, Rahatekar SS. Natural Antimicrobial Nano Composite Fibres Manufactured from a Combination of Alginate and Oregano Essential Oil. NANOMATERIALS 2021; 11:nano11082062. [PMID: 34443893 PMCID: PMC8398160 DOI: 10.3390/nano11082062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 12/18/2022]
Abstract
Alginate is a linear biodegradable polysaccharide polymer, which is bio-renewable and widely used for various biomedical applications. For the next generation of medical textiles, alginate nanofibres are desirable for their use in wound dressings that are biocompatible, sustainable, and abundantly available. This study has developed a unique manufacturing process for producing alginate nanofibres with exceptional antimicrobial properties of oregano essential oil (OEO) as a natural antimicrobial agent. OEO with varying degrees of concentration was incorporated in an aqueous alginate solution. Appropriate materials and electrospinning process parameter selection allowed us to manufacture alginate fibres with a range of diameters between 38 and 105 nm. A unique crosslinking process for alginate nanofibres using extended water soaking was developed. Mechanical characterisation using micro-mechanical testing of nonwoven electrospun alginate/oregano composite nanofibres revealed that it was durable. An extensive antimicrobial study was carried out on alginate/oregano composite nanofibres using a range of Gram-positive (methicillin-resistant Staphylococcus aureus (MRSA) and Listeria monocytogenes) and Gram-negative bacteria (Klebsiella pneumoniae and Salmonella enterica), which are common wound and food pathogens. The results indicated that increasing the concentration of OEO from 2 to 3 wt % showed improved antimicrobial activity against all pathogens, and activity was significantly improved against MRSA compared to a non-alginate-based control disk containing OEO. Therefore, our research suggests that all-natural alginate/oregano nanofibre composite textiles offer a new generation of medical textiles for advanced wound dressing technology as well as for food packaging applications.
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Affiliation(s)
- Hao Lu
- Enhanced Composites and Structures Centre, School of Aerospace, Transport and Manufacturing, Cranfield University, Bedfordshire MK43 0AL, UK;
| | - Jonathan A. Butler
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK; (J.A.B.); (N.S.B.)
| | - Nicole S. Britten
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, UK; (J.A.B.); (N.S.B.)
| | - Prabhuraj D. Venkatraman
- Manchester Fashion Institute, Faculty of Arts and Humanities, Manchester Metropolitan University, Cavendish Street, Manchester M15 6BH, UK
- Correspondence: (P.D.V.); (S.S.R.)
| | - Sameer S. Rahatekar
- Enhanced Composites and Structures Centre, School of Aerospace, Transport and Manufacturing, Cranfield University, Bedfordshire MK43 0AL, UK;
- Correspondence: (P.D.V.); (S.S.R.)
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ÖZER Z. Chemical Composition and Antioxidant Activities of Leaf and Flower Essential Oils of Origanum onites L. Growing in Mount Ida-Turkey. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2020. [DOI: 10.18596/jotcsa.780334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Study of the antifungal potential of carvacrol on growth inhibition of Candida krusei in a systemic candidiasis. ADVANCES IN TRADITIONAL MEDICINE 2020. [DOI: 10.1007/s13596-020-00482-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Oregano Oil and Its Principal Component, Carvacrol, Inhibit HIV-1 Fusion into Target Cells. J Virol 2020; 94:JVI.00147-20. [PMID: 32461309 DOI: 10.1128/jvi.00147-20] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 05/01/2020] [Indexed: 02/07/2023] Open
Abstract
Oregano essential oil has long been known for its health-promoting benefits. Here, we report its activity against viral replication. Oregano oil was found to specifically inhibit lentiviruses, such as human and simian immunodeficiency viruses (HIV and SIV), irrespective of virus tropism, but not hepatitis C virus, adenovirus 5 (ADV5), Zika virus, and influenza (H1N1) virus. Oregano oil's most abundant components, carvacrol and its isomer, thymol, were shown to block virus-target cell fusion while not perturbing other stages of the virus life cycle. We detected changes in virus particle density, suggesting that cholesterol depletion from the HIV-1 envelope membrane reduces virus entry. Furthermore, infection was rescued by adding exogenous cholesterol. The evolution of viral resistance to carvacrol supported this mechanism of action with the identification of mutations in the viral gp41 fusion protein that counteracted cholesterol depletion. In addition, resistance to carvacrol emerged later than typically observed for other clinically used drugs, strengthening its antiviral potential. Structure-activity relationship studies revealed key motifs of carvacrol and thymol required for HIV neutralization and identified previously unknown active analogs. Carvacrol was also shown to additively cooperate with antiretroviral therapy. In sum, oregano oil and improved carvacrol and thymol analogs could be considered to supplement current HIV therapeutics.IMPORTANCE Oregano essential oil has multiple benefits in traditional medicine, cosmetics, and food industries. Carvacrol and its analog, thymol, are well-described components of oregano oil. Here, we show that these compounds inhibit HIV-target cell fusion independently of viral tropism. Our results suggest that carvacrol and thymol alter the cholesterol content of the viral membrane, blocking HIV-1 entry into the target cell. Resistance to carvacrol has selected for viruses with mutations in the viral envelope glycoprotein, gp41. This protein is known for its interaction with cholesterol present in membrane lipid rafts. Together, these results demonstrate the potential of therapies targeting the viral envelope membrane, and oregano oil is a safe supplement to antiretrovirals, potentially delaying disease progression and resistance development.
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The Applications of Origanum Vulgare and Its Derivatives in Human, Ruminant and Fish Nutrition – A Review. ANNALS OF ANIMAL SCIENCE 2020. [DOI: 10.2478/aoas-2020-0004] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Abstract
Origanum vulgare L. is an aromatic enduring herb that belongs to Lamiaceae family. The bioactive constituents of this herb, such as carvacrol and thymol possess several medicinal properties, such as antioxidant, antidiabetic, anti-inflammatory, antimicrobial, antiviral, antiparasitic, anti-neoplastic, and immune modulatory. Moreover, it is considered a standard natural, less toxic, and residue free feed additive, that is successfully used in livestock and fish. Additionally, in human, Origanum vulgare is extensively used with promising health benefits against respiratory, digestive and urinary disorders. This review casts light on description, chemical composition and structure of Origanum vulgare, as well as its therapeutic applications in human and its biological activities in ruminants and fish, data that will be possibly useful for physiologists, nutritionists and veterinarians.
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14
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Dananjaya S, Thu Thao N, Wijerathna H, Lee J, Edussuriya M, Choi D, Saravana Kumar R. In vitro and in vivo anticandidal efficacy of green synthesized gold nanoparticles using Spirulina maxima polysaccharide. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.03.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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15
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Niu C, Wang C, Yang Y, Chen R, Zhang J, Chen H, Zhuge Y, Li J, Cheng J, Xu K, Chu M, Ren C, Zhang C, Jia C. Carvacrol Induces Candida albicans Apoptosis Associated With Ca 2+/Calcineurin Pathway. Front Cell Infect Microbiol 2020; 10:192. [PMID: 32426298 PMCID: PMC7203418 DOI: 10.3389/fcimb.2020.00192] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 04/09/2020] [Indexed: 12/11/2022] Open
Abstract
As the prevalence of systemic fungal infections caused by Candida albicans gradually increases, it is necessary to explore potential and effective antifungals. Carvacrol is reported to be lethally toxic to C. albicans, involving several potential mechanisms. However, the form and specific mechanism of cell death caused by this compound has not been delineated. In this study, we found that carvacrol could significantly decrease C. albicans survival rates, consistent with previous researches. Further examination proved that carvacrol treatment caused cell membrane permeability and depolarization. To elucidate the association between cell death and apoptosis, DNA fragmentation and metacaspase activation were determined; as expected, these two apoptosis-related markers were clearly observed. Moreover, total and mitochondrial reactive oxygen species (ROS) levels were elevated, and both mitochondrial transmembrane potential and morphology were disrupted. Additionally, cytosolic and mitochondrial calcium levels were also increased by carvacrol. Calcineurin inhibition experiments revealed cyclosporine A (CsA) addition notably rescued cell growth and inhibited metacaspase activation, indicating that carvacrol triggered C. albicans apoptosis through inducing calcineurin activation. Carvacrol was demonstrated to both have low toxicity and be effective in alleviating systemic infections with C. albicans, which might be via its antifungal and immunomodulation activities. This study suggests that carvacrol has excellent potential as a natural protective compound against C. albicans infections.
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Affiliation(s)
- Chao Niu
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Chenglu Wang
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China.,Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yijia Yang
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China.,Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ruiyao Chen
- Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jian Zhang
- Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Haiyan Chen
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China.,Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yingzhi Zhuge
- Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jingqi Li
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China.,Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jianhua Cheng
- Department of Neurology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ke Xu
- The Institute of Life Sciences, Wenzhou University, Wenzhou, China
| | - Maoping Chu
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China.,Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Chunhua Ren
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Chunxiang Zhang
- Children's Heart Center, Institute of Cardiovascular Development and Translational Medicine, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Chang Jia
- Pediatric Research Institute, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
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16
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The phenolic contents, antioxidant and anticholinesterase activity of section Amaracus (Gled.) Vogel and Anatolicon Ietsw. of Origanum L. species. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.01.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] Open
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17
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El-Saber Batiha G, Alkazmi LM, Wasef LG, Beshbishy AM, Nadwa EH, Rashwan EK. Syzygium aromaticum L. (Myrtaceae): Traditional Uses, Bioactive Chemical Constituents, Pharmacological and Toxicological Activities. Biomolecules 2020; 10:biom10020202. [PMID: 32019140 PMCID: PMC7072209 DOI: 10.3390/biom10020202] [Citation(s) in RCA: 151] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 01/27/2020] [Accepted: 01/28/2020] [Indexed: 12/22/2022] Open
Abstract
Herbal medicinal products have been documented as a significant source for discovering new pharmaceutical molecules that have been used to treat serious diseases. Many plant species have been reported to have pharmacological activities attributable to their phytoconstituents such are glycosides, saponins, flavonoids, steroids, tannins, alkaloids, terpenes, etc. Syzygium aromaticum (clove) is a traditional spice that has been used for food preservation and possesses various pharmacological activities. S. aromaticum is rich in many phytochemicals as follows: sesquiterpenes, monoterpenes, hydrocarbon, and phenolic compounds. Eugenyl acetate, eugenol, and β-caryophyllene are the most significant phytochemicals in clove oil. Pharmacologically, S. aromaticum has been examined toward various pathogenic parasites and microorganisms, including pathogenic bacteria, Plasmodium, Babesia, Theileria parasites, Herpes simplex, and hepatitis C viruses. Several reports documented the analgesic, antioxidant, anticancer, antiseptic, anti-depressant, antispasmodic, anti-inflammatory, antiviral, antifungal, and antibacterial activity of eugenol against several pathogenic bacteria including methicillin-resistant Staphylococcus epidermidis and S. aureus. Moreover, eugenol was found to protect against CCl4-induced hepatotoxicity and showed a potential lethal efficacy against the multiplication of various parasites including Giardia lamblia, Fasciola gigantica, Haemonchus contortus, and Schistosoma mansoni. This review examines the phytochemical composition and biological activities of clove extracts along with clove essential oil and the main active compound, eugenol, and implicates new findings from gas chromatography-mass spectroscopy (GC-MS) analysis.
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Affiliation(s)
- Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheira, Egypt;
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Nishi 2-13, Inada-cho, Obihiro 080-8555, Hokkaido, Japan;
- Correspondence: or ; Tel./Fax: +20-45-271-6024
| | - Luay M. Alkazmi
- Biology Department, Faculty of Applied Sciences, Umm Al-Qura University, Makkah 21955, Saudi Arabia;
| | - Lamiaa G. Wasef
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheira, Egypt;
| | - Amany Magdy Beshbishy
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Nishi 2-13, Inada-cho, Obihiro 080-8555, Hokkaido, Japan;
| | - Eman H. Nadwa
- Department of Pharmacology and Therapeutics, College of Medicine, Jouf University, Sakaka 72345, Saudi Arabia;
- Department of Medical Pharmacology, Faculty of Medicine, Cairo University, Giza 12613, Egypt
| | - Eman K. Rashwan
- Department of Physiology, College of Medicine, Al-Azhar University, Assuit 71524, Egypt;
- Department of Physiology, College of Medicine, Jouf University, Sakaka 42421, Saudi Arabia
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18
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Nikapitiya C, Dananjaya S, Chandrarathna H, De Zoysa M, Whang I. Octominin: A Novel Synthetic Anticandidal Peptide Derived from Defense Protein of Octopus minor. Mar Drugs 2020; 18:md18010056. [PMID: 31952292 PMCID: PMC7024321 DOI: 10.3390/md18010056] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 02/07/2023] Open
Abstract
The rapid emergence of multidrug-resistant pathogens makes an urgent need for discovering novel antimicrobial agents as alternatives to conventional antibiotics. Towards this end, we designed and synthesized a synthetic peptide of 23 amino acids (AAs) (1GWLIRGAIHAGKAIHGLIHRRRH23) from a defense protein 3 cDNA sequence of Octopus minor. The sequence of the peptide, which was named Octominin, had characteristic features of known antimicrobial peptides (AMPs) such as a positive charge (+5), high hydrophobic residue ratio (43%), and 1.86 kcal/mol of Boman index. Octominin was predicted to have an alpha-helix secondary structure. The synthesized Octominin was 2625.2 Da with 92.5% purity. The peptide showed a minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of 50 and 200 μg/mL, respectively, against Candida albicans. Field emission scanning electron microscopy observation confirmed that Octominin caused ultrastructural cell wall deformities in C. albicans. In addition, propidium iodide penetrated the Octominin-treated C. albicans cells, further demonstrating loss of cell membrane integrity that caused cell death at both MIC and MFC. Octominin treatment increased the production of intracellular reactive oxygen species and decreased cell viability in a concentration dependent manner. Cytotoxicity assays revealed no significant influence of Octominin on the viability of human embryonic kidney 293T cell line, with over 95% live cells in the Octominin-treated group observed up to 100 µg/mL. Moreover, we confirmed the antifungal action of Octominin in vivo using a zebrafish experimental infection model. Overall, our results demonstrate the Octominin is a lead compound for further studies, which exerts its effects by inducing cell wall damage, causing loss of cell membrane integrity, and elevating oxidative stress.
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Affiliation(s)
- Chamilani Nikapitiya
- College of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Korea; (C.N.)
| | - S.H.S. Dananjaya
- College of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Korea; (C.N.)
| | - H.P.S.U. Chandrarathna
- College of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Korea; (C.N.)
| | - Mahanama De Zoysa
- College of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Korea; (C.N.)
- Correspondence: (M.D.Z.); (I.W.)
| | - Ilson Whang
- National Marine Biodiversity Institute of Korea (MABIK), 75, Jangsan-ro 101beon-gil, Janghang-eup, Seochun-gun, Chungchungnam-do 33662, Korea
- Correspondence: (M.D.Z.); (I.W.)
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19
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Inhibitory effects of Cinnamaldehyde, Carvacrol, and honey on the expression of exoS and ampC genes in multidrug-resistant Pseudomonas aeruginosa isolated from burn wound infections. Microb Pathog 2019; 140:103946. [PMID: 31874231 DOI: 10.1016/j.micpath.2019.103946] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 12/13/2022]
Abstract
This study aimed to evaluate the effects of Cinnamaldehyde, Carvacrol, and honey either alone or in combinations on the expression of exoS and ampC genes in multidrug-resistant (MDR) P. aeruginosa isolates. Thirty-five P. aeruginosa isolates were recovered from burn wound infections of patients admitted to the burn ward of Besat hospital of Hamadan, Iran, during 2018. Antibiotic susceptibility testing was performed using the Kirby-Bauer disk diffusion method to identify MDR isolates. The antibacterial effects of Cinnamaldehyde, Carvacrol, and honey either alone or in combinations with each other were compared to Imipenem (as the control group) using the broth dilution method. The expressions of exoS and ampC genes were determined in bacteria treated with sub-minimum inhibitory concentration (MIC) of the ternary combination of Cinnamaldehyde, Carvacrol, and honey by Real-Time-PCR. The data were analyzed using SPSS software applying student t-test, Kruskal-Wallis, and Mann-Whitney U tests. The P-value less than 0.05 was considered as statistically significant. The average MICs of Cinnamaldehyde, Carvacrol, and honey were 0.82-0.01, 0.01-0.6, and 62.5-250 μg/mL, respectively. The average MIC of the mentioned compounds was 430 times lower than that of Imipenem. A synergistic effect was detected between these drugs against 70% of the isolates. At sub-MIC concentration, the triple combination of Cinnamaldehyde, Carvacrol, and honey reduced the expressions of exoS and ampC genes by 6.12 and 2.85 folds, respectively. The combination of Cinnamaldehyde, Carvacrol, and honey showed a higher antibacterial effect than Imipenem. However, it needs confirmation with more isolates.
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20
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Quinto EJ, Caro I, Villalobos-Delgado LH, Mateo J, De-Mateo-Silleras B, Redondo-Del-Río MP. Food Safety through Natural Antimicrobials. Antibiotics (Basel) 2019; 8:E208. [PMID: 31683578 PMCID: PMC6963522 DOI: 10.3390/antibiotics8040208] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 10/17/2019] [Accepted: 10/24/2019] [Indexed: 02/07/2023] Open
Abstract
Microbial pathogens are the cause of many foodborne diseases after the ingestion of contaminated food. Several preservation methods have been developed to assure microbial food safety, as well as nutritional values and sensory characteristics of food. However, the demand for natural antimicrobial agents is increasing due to consumers' concern on health issues. Moreover, the use of antibiotics is leading to multidrug resistant microorganisms reinforcing the focus of researchers and the food industry on natural antimicrobials. Natural antimicrobial compounds from plants, animals, bacteria, viruses, algae and mushrooms are covered. Finally, new perspectives from researchers in the field and the interest of the food industry in innovations are reviewed. These new approaches should be useful for controlling foodborne bacterial pathogens; furthermore, the shelf-life of food would be extended.
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Affiliation(s)
- Emiliano J Quinto
- Department of Nutrition and Food Science, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain.
| | - Irma Caro
- Department of Nutrition and Food Science, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain.
| | - Luz H Villalobos-Delgado
- Institute of Agroindustry, Technological University of the Mixteca, Huajuapan de León, Oaxaca 69000, Mexico.
| | - Javier Mateo
- Department of Hygiene and Food Technology, Faculty of Veterinary Medicine, University of León, 24071 León, Spain.
| | - Beatriz De-Mateo-Silleras
- Department of Nutrition and Food Science, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain.
| | - María P Redondo-Del-Río
- Department of Nutrition and Food Science, Faculty of Medicine, University of Valladolid, 47005 Valladolid, Spain.
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Antifungal activity of essential oil from Mentha spicata L. and Mentha pulegium L. growing wild in Sardinia island (Italy). Nat Prod Res 2019; 35:993-999. [PMID: 31321997 DOI: 10.1080/14786419.2019.1610755] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This study aims to evaluate the antifungal activity of Mentha spicata L. and Mentha pulegium L. from Sardinia and to assess their efficacy on virulence factors for Candida albicans, particularly on the inhibition of the germ tube formation. The major compounds of the essential oils were carvone (62.9%) for M. spicata and pulegone (86.2%) for M. pulegium. The essential oil from M. spicata showed a more preeminent effect against Cryptococcus neoformans and the dermatophytes Trichophyton rubrum and T. verrucosum (0.32 μL/mL). Both oils were very effective in inhibiting C. albicans germ tube formation, at doses well below their MIC (0.16 μL/mL).
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22
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Natu KN, Tatke PA. Essential oils – prospective candidates for antifungal treatment? JOURNAL OF ESSENTIAL OIL RESEARCH 2019. [DOI: 10.1080/10412905.2019.1604437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Kalyani N. Natu
- C. U. Shah College of Pharmacy, S.N.D.T. Women’s University, Mumbai, India
| | - Pratima A. Tatke
- C. U. Shah College of Pharmacy, S.N.D.T. Women’s University, Mumbai, India
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Lu M, Dai T, Murray CK, Wu MX. Bactericidal Property of Oregano Oil Against Multidrug-Resistant Clinical Isolates. Front Microbiol 2018; 9:2329. [PMID: 30344513 PMCID: PMC6182053 DOI: 10.3389/fmicb.2018.02329] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 09/11/2018] [Indexed: 12/14/2022] Open
Abstract
Development of non-antibiotic alternatives to treat infections caused by multidrug-resistant (MDR) microbes represents one of the top priorities in healthcare and community settings, especially in the care of combat trauma-associated wound infections. Here, we investigate efficacy of oregano oil against pathogenic bacteria including MDR isolates from the combat casualties in vitro and in a mouse burn model. Oregano oil showed a significant anti-bacterial activity against 11 MDR clinical isolates including four Acinetobacter baumannii, three Pseudomonas aeruginosa, and four methicillin-resistant Staphylococcus aureus (MRSA) obtained from combat casualties and two luminescent strains of PA01 and MRSA USA300, with a MIC ranging from 0.08 mg/ml to 0.64 mg/ml. Oregano oil also effectively eradicated biofilms formed by each of the 13 pathogens above at similar MICs. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) revealed that oregano oil damaged bacterial cells and altered the morphology of their biofilms. While efficiently inactivating bacteria, there was no evidence of resistance development after up to 20 consecutive passages of representative bacterial strains in the presence of sublethal doses of oregano oil. In vivo study using the third-degree burn wounds infected with PA01 or USA300 demonstrated that oregano oil, topically applied 24 h after bacterial inoculation, sufficiently reduced the bacterial load in the wounds by 3 log10 in 1 h, as measured by drastic reduction of bacterial bioluminescence. This bactericidal activity of oregano oil concurred with no significant side effect on the skin histologically or genotoxicity after three topical applications of oregano oil at 10 mg/ml for three consecutive days. The investigation suggests potentials of oregano oil as an alternative to antibiotics for the treatment of wound-associated infections regardless of antibiotic susceptibility.
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Affiliation(s)
- Min Lu
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Tianhong Dai
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Clinton K Murray
- First Area Medical Laboratory, JBSA-Fort Sam Houston, Houston, TX, United States
| | - Mei X Wu
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
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Antifungal effect of Satureja khuzestanica Jamzad essential oil on oral candidiasis in immunosuppressed rats. HERBA POLONICA 2018. [DOI: 10.2478/hepo-2018-0017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Summary
Introduction: The antimicrobial, antibacterial, antioxidant, antihyperlipidaemic, antidiabetic, anti-inflammatory and analgesic effects of Satureja khuzestanica (Lamiaceae) have been investigated in numerous studies.
Objective: The antifungal effects of S. khuzestanica essential oil (SKJO) in immunosuppressed rats suffering from oral candidiasis were investigated.
Methods: A fungal suspension with a density of 3×108 CFU/ml was taken from the isolate of a case with acute vaginitis. In order to achieve a medicinal formulation, accurate twice the minimum inhibitory concentration (MIC) of SKJO and 10 times MIC of nystatin was used with 0.8% agar as a base material. In this study, 35 rats divided into 5 groups each of 7 were used. The assessment of level of infection and specification of the effects of treatment were performed using microbiological and histopathological methods as well as clinical examinations.
Results: Our results show that carvacrol is the main compound of SKJ essential oil. Lesions completely disappeared in both treatment groups (SKJO and nystatin) after 8 days of treatment. Furthermore, in groups treated with SKJO and nystatin, the quantities of mean logarithm of colony forming unit (CFU) were 85.62% and 90.62%, respectively, in comparison with placebo group. Also, histopathological properties suggested no infection in groups who had clean and normal dorsal tongue mucosa.
Conclusions: Using SKJO with twice accuracy it was concluded that MIC in immunosuppressed rats was quite successful in a time of a week and equal with that of a nystatin treatment with an accuracy of 10 times the MIC.
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26
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Reactive oxygen species-independent apoptotic pathway by gold nanoparticles in Candida albicans. Microbiol Res 2018; 207:33-40. [DOI: 10.1016/j.micres.2017.11.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 10/28/2017] [Accepted: 11/04/2017] [Indexed: 11/23/2022]
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Singh SP, Chandel VS, Manohar R. Dielectric study of Clove oil. J Ayurveda Integr Med 2018; 9:53-56. [PMID: 29229369 PMCID: PMC5884008 DOI: 10.1016/j.jaim.2017.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Revised: 11/27/2016] [Accepted: 01/11/2017] [Indexed: 11/28/2022] Open
Abstract
Dielectric properties of clove oil were determined using an impedance gain phase analyzer (HP 4194 A) at discrete frequencies between 10 kHz and 3 MHz and a range of temperature between 25 °C and 45 °C. A micro processor controller based temperature controller (Julabo F-25) was used for keeping the temperature of clove oil constant. Dielectric constant of the sample is found to decrease with increase in frequency and temperature, while dielectric loss decreases with increase in frequency but increases with increase in temperature. Penetration depth has been calculated with the help of dielectric data and is found to decrease with increase in frequency.
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Affiliation(s)
| | | | - Rajiv Manohar
- Department of Physics, Lucknow University, Lucknow 226007, India
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Szczepanik M, Walczak M, Zawitowska B, Michalska-Sionkowska M, Szumny A, Wawrzeńczyk C, Brzezinska MS. Chemical composition, antimicromicrobial activity and insecticidal activity against the lesser mealworm Alphitobius diaperinus (Panzer) (Coleoptera: Tenebrionidae) of Origanum vulgare L. ssp. hirtum (Link) and Artemisia dracunculus L. essential oils. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:767-774. [PMID: 28675464 DOI: 10.1002/jsfa.8524] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 06/06/2017] [Accepted: 06/26/2017] [Indexed: 05/27/2023]
Abstract
BACKGROUND Essential oils (EOs) from Artemisia dracunculus L. and Origanum vulgare L. ssp. hirtum were obtained and the qualitative and quantitative chemical composition of the extracts was investigated. The insecticidal activity of EOs against the larval stages of Alphitobius diaperinus (Panzer) was studied. Moreover, the antimicrobial activity of these oils against pathogens transmitted by this pest was also investigated. RESULTS The obtained results indicate the possibility of using Greek oregano EO with a high content of carvacrol as a feed additive in poultry nutrition. The use of the Greek oregano oil at 1% (w/w) dose showed stronger reduction of body weight gain of stage IV larvae. Their body mass was only 10.92% of the control. Moreover, EOs from O. vulgare strongly inhibited the growth of tested bacterial strains as well as Candida albicans. CONCLUSION Greek oregano EO may be a good alternative to antibiotic growth promoters and coccidiostats whose use in feeding farm animals has been prohibited since January 2006 under European Union directives. The introduction of O. vulgare L. ssp. hirtum EO into the premises of farm and poultry houses may help to improve sanitary conditions and control of the lesser mealworm inhabiting these buildings. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Maryla Szczepanik
- Department of Invertebrate Zoology, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University in Torun, Torun, Poland
| | - Maciej Walczak
- Department of Environmental Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University in Torun, Torun, Poland
| | - Beata Zawitowska
- Department of Invertebrate Zoology, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University in Torun, Torun, Poland
| | - Marta Michalska-Sionkowska
- Department of Environmental Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University in Torun, Torun, Poland
| | - Antoni Szumny
- Department of Chemistry, Wroclaw University of Environmental and Life Sciences, Wrocław, Poland
| | - Czesław Wawrzeńczyk
- Department of Chemistry, Wroclaw University of Environmental and Life Sciences, Wrocław, Poland
| | - Maria Swiontek Brzezinska
- Department of Environmental Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University in Torun, Torun, Poland
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Bhat V, Sharma SM, Shetty V, Shastry CS, Rao CV, Shenoy S, Saha S, Balaji S. Characterization of Herbal Antifungal Agent, Origanum vulgare against Oral Candida spp. Isolated from Patients with Candida-Associated Denture Stomatitis: An In vitro Study. Contemp Clin Dent 2018; 9:S3-S10. [PMID: 29962756 PMCID: PMC6006875 DOI: 10.4103/ccd.ccd_537_17] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background: Candida Associated Denture Stomatitis is the prevalent fungal pathosis in denture wearers, especially in immunocompromized patients. Existing antifungal agents are ineffective since the Candida species become resistant and also, they become toxic. Origanum vulgare is a herbal plant with high anti-fungal activity against Candida of blood and urine origin. However, it has never been explored against Candida from oral cavity. Materials & Methodology: Dry leaves of the plant were purchased and authenticated. Oil extraction was done using Hydro-distillation method. Clinical isolates of Candida from denture wearers was speciated using CHROMagar. Well Diffusion test was used to confirm the antifungal activity. Hydro-distillation & Maceration methods of extraction were compared. MIC/MFC was determined using CSLI guidelines. Infra-Red Spectroscopy was used to identify the active functional group. Results: O.vulgare showed 30±3mm of zone of inhibition as against 19mm for fluconazole. The suitable extraction method was Hydro-distillation. MIC & MFC were found to be 0.024% and 0.097% respectively which was much lesser than for fluconazole (0.25%). The active functional group had chemically similar structure as Carvacrol, usually found in antifungal herbs. Conclusion: within the limitations of the study, it was concluded that (a)O.vulgare is anticandidal for clinical isolates of oral Candida, (b) Hydro-distillation is an effective method as compared to Maceration (c) MIC & MFC are much lower than that of fluconazole (d) the major functional group was structurally similar to Carvacrol.
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Affiliation(s)
- Vinaya Bhat
- Department of Prosthodontics, A B Shetty Memorial Institute of Dental Sciences, NITTE (Deemed to be University), Mangalore, Karnataka, India
| | - S M Sharma
- Department of Oral and Maxillofacial Surgery, ABSMIDS, NITTE (Deemed to be University), Mangalore, Karnataka, India
| | - Veena Shetty
- Department of Microbiology, KSHEMA, NITTE (Deemed to be University), Mangalore, Karnataka, India
| | - C S Shastry
- Principal, NGSM Institute of Pharmaceutical Sciences, NITTE (Deemed to be University), Mangalore, Karnataka, India
| | - C Vaman Rao
- Department of Biotechnology, NMAM Institute of Technology, NITTE (Deemed to be University), Mangalore, Karnataka, India
| | - Shilpa Shenoy
- Department of Microbiology, NITTE (Deemed to be University), Mangalore, Karnataka, India
| | - Santanu Saha
- Department of Pharmacognosy, NGSM Institute of Pharmaceutical Sciences, NITTE (Deemed to be University), Mangalore, Karnataka, India
| | - Sriram Balaji
- Department of Prosthodontics, Sri Ramakrishna Dental College and Hospitals, Coimbatore, Tamil Nadu, India
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Rawat P, Agarwal S, Tripathi S. Effect of Addition of Antifungal Agents on Physical and Biological Properties of a Tissue Conditioner: An In-Vitro Study. Adv Pharm Bull 2017; 7:485-490. [PMID: 29071233 PMCID: PMC5651072 DOI: 10.15171/apb.2017.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 08/19/2017] [Accepted: 08/23/2017] [Indexed: 12/02/2022] Open
Abstract
Purpose: Tissue conditioners are used for healing of abused oral tissues. They may harbour microorganisms causing oral diseases such as candidiasis compromising the health of the patient. Also, addition of antifungal agents into tissue conditioner may alter its properties. This study compares the anti-fungal property and mechanical properties of tissue conditioner containing different antifungal agents. Methods: Three antifungal agents, one synthetic – fluconazole, and two natural - oregano oil and virgin coconut oil were added into the tissue conditioner (Viscogel) in different concentrations. The antifungal property, tensile bond strength and viscoelasticity of Viscogel containing these antifungal agents were assessed after 24 hours, three days and seven days. Results: While, the highest antifungal activity was shown by Viscogel containing fluconazole, the maximum tensile bond strength was found to be of Viscogel alone (control). Although Viscogel alone and in combination of fluconazole showed deterioration in viscoelasticity, Viscogel in combination of natural agents showed no significant changes over the period of seven days. Conclusion: Incorporation of the natural agents in the tissue conditioner can be used as an effective alternative to systemic or topical synthetic antifungal agents.
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Affiliation(s)
- Pragati Rawat
- Department of Prosthodontics and Crown & Bridge, Kothiwal dental college and research center, Moradabad, UP-244001, India
| | - Swatantra Agarwal
- Department of Prosthodontics and Crown & Bridge, Kothiwal dental college and research center, Moradabad, UP-244001, India
| | - Siddhi Tripathi
- Department of Prosthodontics and Crown & Bridge, Kothiwal dental college and research center, Moradabad, UP-244001, India
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Nóbrega RDO, Teixeira APDC, Oliveira WAD, Lima EDO, Lima IO. Investigation of the antifungal activity of carvacrol against strains of Cryptococcus neoformans. PHARMACEUTICAL BIOLOGY 2016; 54:2591-2596. [PMID: 27225838 DOI: 10.3109/13880209.2016.1172319] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Cryptococcus neoformans is the etiologic agent of opportunistic systemic fungal infection cryptococcosis, which affects individuals with compromised immune systems. Thus, natural products research has become important, since monoterpenes such as carvacrol, a promising molecule in the search antifungal agents, have shown significant biological activity. OBJECTIVE The study aimed to investigate the antifungal activity and mode of action of carvacrol against strains of C. neoformans. METHODS The minimum inhibitory concentration (MIC) was determined by microdilution method. Minimum fungicidal concentration (MFC) was performed by seeding technique on solid media. Studying the mode of action was performed using broth microdilution. RESULTS The MIC ranged from 25 to 81 μg/mL and the MFC ranged from 25 to 102 μg/mL. Carvacrol bonded to exogenous ergosterol and cholesterol. DISCUSSION The results suggest that carvacrol has antifungal activity against C. neoformans and its mode of action is related to fungal membrane instability. CONCLUSIONS The phytoconstituent carvacrol may eventually become a drug; however, further studies are needed to elucidate its mechanism.
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Affiliation(s)
- Rafaela de Oliveira Nóbrega
- a Pós-graduanda em Ciências Naturais e Biotecnologia , Centro de Educação e Saúde , Cuité , Paraíba , Brasil
| | | | - Wylly Araújo de Oliveira
- b Centro de Educação e Saúde , Universidade Federal de Campina Grande , Cuité , Paraíba , Brasil
| | - Edeltrudes de Oliveira Lima
- c Departamento de Ciências Farmacêuticas , Centro de Ciências da Saúde, Universidade Federal da Paraíba , João Pessoa , Brasil
| | - Igara Oliveira Lima
- b Centro de Educação e Saúde , Universidade Federal de Campina Grande , Cuité , Paraíba , Brasil
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Bona E, Cantamessa S, Pavan M, Novello G, Massa N, Rocchetti A, Berta G, Gamalero E. Sensitivity of Candida albicans to essential oils: are they an alternative to antifungal agents? J Appl Microbiol 2016; 121:1530-1545. [PMID: 27568869 DOI: 10.1111/jam.13282] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 07/14/2016] [Accepted: 08/25/2016] [Indexed: 11/30/2022]
Abstract
AIMS Candida albicans is an important opportunistic pathogen, responsible for the majority of yeast infections in humans. Essential oils, extracted from aromatic plants, are well-known antimicrobial agents, characterized by a broad spectrum of activities, including antifungal properties. The aim of this work was to assess the sensitivity of 30 different vaginal isolated strains of C. albicans to 12 essential oils, compared to the three main used drugs (clotrimazole, fluconazole and itraconazole). METHODS AND RESULTS Thirty strains of C. albicans were isolated from vaginal swab on CHROMagar™ Candida. The agar disc diffusion method was employed to determine the sensitivity to the essential oils. The antifungal activity of the essential oils and antifungal drugs (clotrimazole, itraconazole and fluconazole) were investigated using a microdilution method. Transmission and scanning electron microscopy analyses were performed to get a deep inside on cellular damages. Mint, basil, lavender, tea tree oil, winter savory and oregano essential oils inhibited both the growth and the activity of C. albicans more efficiently than clotrimazole. Damages induced by essential oils at the cellular level were stronger than those caused by clotrimazole. CONCLUSIONS Candida albicans is more sensitive to different essential oils compared to the main used drugs. Moreover, the essential oil affected mainly the cell wall and the membranes of the yeast. SIGNIFICANCE AND IMPACT OF THE STUDY The results of this work support the research for new alternatives or complementary therapies against vaginal candidiasis.
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Affiliation(s)
- E Bona
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy
| | - S Cantamessa
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy
| | - M Pavan
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy
| | - G Novello
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy
| | - N Massa
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy
| | - A Rocchetti
- Azienda Sanitaria Santi Antonio, Biagio e Cesare Arrigo, Alessandria, Italy
| | - G Berta
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy
| | - E Gamalero
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy
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Alzate P, Miramont S, Flores S, Gerschenson LN. Effect of the potassium sorbate and carvacrol addition on the properties and antimicrobial activity of tapioca starch - Hydroxypropyl methylcellulose edible films. STARCH-STARKE 2016. [DOI: 10.1002/star.201600261] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Paola Alzate
- Facultad de Ciencias Exactas y Naturales (FCEN); Departamento de Industrias; Universidad de Buenos Aires (UBA); Buenos Aires Argentina
| | - Sofía Miramont
- Facultad de Ciencias Exactas y Naturales (FCEN); Departamento de Industrias; Universidad de Buenos Aires (UBA); Buenos Aires Argentina
| | - Silvia Flores
- Facultad de Ciencias Exactas y Naturales (FCEN); Departamento de Industrias; Universidad de Buenos Aires (UBA); Buenos Aires Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Buenos Aires Argentina
| | - Lía Noemí Gerschenson
- Facultad de Ciencias Exactas y Naturales (FCEN); Departamento de Industrias; Universidad de Buenos Aires (UBA); Buenos Aires Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Buenos Aires Argentina
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Pereira JV, Freires IA, Castilho AR, da Cunha MG, Alves HDS, Rosalen PL. Antifungal potential of Sideroxylon obtusifolium and Syzygium cumini and their mode of action against Candida albicans. PHARMACEUTICAL BIOLOGY 2016; 54:2312-2319. [PMID: 26987037 DOI: 10.3109/13880209.2016.1155629] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Context The emergence of resistant pathogens and toxicity of antifungals have encouraged an active search for novel candidates to manage Candida biofilms. Objective In this study, the little known species Sideroxylon obtusifolium T.D. Penn (Sapotacea) and Syzygium cumini (L.) Skeels (Myrtaceae), from the Caatinga biome in Brazil were chemically characterized and explored for their antifungal potential against C. albicans. Materials and methods We determined the effects of hydroalcoholic extracts/fractions upon fungal growth (minimum inhibitory and fungicidal concentrations, MIC/MFC), biofilm morphology (scanning electron microscopy) and viability (confocal laser scanning microscopy), proposed their mode of action (sorbitol and ergosterol assays), and finally investigated their effects against macrophage and keratinocyte cells in a cell-based assay. Data were analysed using one-way analysis of variance with Tukey-Kramer post-test (α = 0.05). Results The n-butanol (Nb) fraction from S. obtusifolium and S. cumini extract (Sc) showed flavonoids (39.11 ± 6.62 mg/g) and saponins (820.35 ± 225.38 mg/g), respectively, in their chemical composition and demonstrated antifungal activity, with MICs of 62.5 and 125 μg/mL, respectively. Nb and Sc may complex with ergosterol as there was a 4-16-fold increase in MICs in the presence of exogenous ergosterol, leading to disrupted permeability of cell membrane. Deleterious effects were observed on morphology and viability of treated biofilms from concentrations as low as their MICs and higher. Sc was not toxic to macrophages and keratinocytes at these concentrations (p > 0.05), unlike Nb. Conclusions Nb and Sc demonstrated considerable antifungal activity and should be further investigated as potential alternative candidates to treat Candida biofilms.
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Affiliation(s)
| | - Irlan Almeida Freires
- b Division of Pharmacology, Anesthesiology and Therapeutics, Department of Physiological Sciences , Piracicaba Dental School, University of Campinas , Piracicaba , SP , Brazil
| | - Aline Rogéria Castilho
- b Division of Pharmacology, Anesthesiology and Therapeutics, Department of Physiological Sciences , Piracicaba Dental School, University of Campinas , Piracicaba , SP , Brazil
| | - Marcos Guilherme da Cunha
- b Division of Pharmacology, Anesthesiology and Therapeutics, Department of Physiological Sciences , Piracicaba Dental School, University of Campinas , Piracicaba , SP , Brazil
| | - Harley da Silva Alves
- c Department of Pharmacy , State University of Paraiba , Campina Grande , PB , Brazil
| | - Pedro Luiz Rosalen
- b Division of Pharmacology, Anesthesiology and Therapeutics, Department of Physiological Sciences , Piracicaba Dental School, University of Campinas , Piracicaba , SP , Brazil
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Phytochemical analysis and assessment of in vitro antibacterial activity of non-polar solvent based Camelina seed extracts. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s40502-016-0223-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Ezzat Abd El-Hack M, Alagawany M, Ragab Farag M, Tiwari R, Karthik K, Dhama K, Zorriehzahra J, Adel M. Beneficial impacts of thymol essential oil on health and production of animals, fish and poultry: a review. JOURNAL OF ESSENTIAL OIL RESEARCH 2016. [DOI: 10.1080/10412905.2016.1153002] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Mahmoud Alagawany
- Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Mayada Ragab Farag
- Department of Forensic Medicine and Toxicology, Veterinary Medicine Faculty, Zagazig University, Zagazig, Egypt
| | - Ruchi Tiwari
- Department of Veterinary Microbiology, Uttar PradeshPandit Deen Dayal Upadhayay Pashu Chikitsa Vigyan Vishwa Vidyalaya Evum Go-Anusandhan Sansthan (DUVASU), Mathura (Uttar Pradesh) India
| | - Kumaragurubaran Karthik
- Division of Bacteriology and Mycology, Indian Veterinary Research Institute, Izatnagar, Bareilly (Uttar Pradesh), India
| | - Kuldeep Dhama
- Division of Pathology, Indian Veterinary Research Institute, Izatnagar, Bareilly (Uttar Pradesh) India
| | - Jalil Zorriehzahra
- Aquatic Animal Health & Diseases Department, Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization(AREEO),Tehran, I.R. Iran
| | - Milad Adel
- Aquatic Animal Health and Diseases Department, Caspian Sea Ecology Research Center, Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO), Tehran, I.R. Iran
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Asdadi A, Hamdouch A, Oukacha A, Moutaj R, Gharby S, Harhar H, El Hadek M, Chebli B, Idrissi Hassani LM. Study on chemical analysis, antioxidant and in vitro antifungal activities of essential oil from wild Vitex agnus-castus L. seeds growing in area of Argan Tree of Morocco against clinical strains of Candida responsible for nosocomial infections. J Mycol Med 2015; 25:e118-27. [PMID: 26611404 DOI: 10.1016/j.mycmed.2015.10.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 09/27/2015] [Accepted: 10/04/2015] [Indexed: 12/22/2022]
Abstract
OBJECTIVE To study the composition, the antioxidant activity and the in vitro antifungal action anti-Candida species of essential oils extracted from seeds of Vite xagnus-castus L. MATERIALS AND METHOD The essential oils were extracted using Clevenger-type apparatus and analyzed by gas chromatography/mass spectrometry (GC/MS). The antioxidant activity was analyzed using the DPPH free radical-scavenging method. Susceptibility tests for Candida albicans (12), C. dubliniensis (1), C. glabrata (3), C. krusei (3), C. parapsilosis (6), C. lusitaniae (1), C. famata (1) and C. tropicalis (3) were expressed as inhibition zone by the disc-diffusion method and as minimal inhibitory concentration (MIC) and minimal fungicidal concentration (MFC) by the broth macrodilution method, compared to amphotricin B and fluconazol as standard drugs. RESULTS Major components were: 1,8-cineole (19.61%), sabinene (14.57%), α-pinene (9.76%), β-farnesene (6.04%), β-caryophyllene oxide (5.83%) and β-caryophyllene (5.02%). A low antioxidant activity was found (IC50=1.072mg/ml), but it can be exploited. V. agnus-castus seeds essential oils disosed a 35-58mm zone of inhibition (mean: 49mm) against all 30 isolates tested. In broth macrodilution method, all the tested Candida species were susceptible to the essential oils and this activity was concentration-dependent. MIC values varied from 0.13 to 2.13mg/ml V. agnus-castus seeds essential oils. CONCLUSION Results of this study indicated that the oils of plant origin could be used as potential anti-Candida species causative agents of nosocomial infections. These oils exhibited a noticeable antifungal activity against the selected fungi. The natural antifungal substances are inexpensive and have fewer side effects, they may represent alternative therapies for candidiasis.
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Affiliation(s)
- A Asdadi
- Équipe Planta Sud, laboratoire de biotechnologies végétales, faculté des sciences d'Agadir, université Ibn Zohr, BP 28/S, Agadir, Morocco.
| | - A Hamdouch
- Équipe Planta Sud, laboratoire de biotechnologies végétales, faculté des sciences d'Agadir, université Ibn Zohr, BP 28/S, Agadir, Morocco
| | - A Oukacha
- Laboratoire de biotechnologies végétales, lutte biologique et phytochimie, faculté des sciences d'Agadir, université Ibn Zohr, BP 28/S, Agadir, Morocco
| | - R Moutaj
- Laboratoire de parasitologie et de mycologie, hôpital militaire Avicenne, CHU Med VI, 40000 Marrakech, Morocco
| | - S Gharby
- Laboratoire de chimie des plantes et de synthèse organique et bioorganique, faculté des sciences, université Mohammed V-Agdal, BP 1014, Rabat, Morocco
| | - H Harhar
- Laboratoire de chimie des plantes et de synthèse organique et bioorganique, faculté des sciences, université Mohammed V-Agdal, BP 1014, Rabat, Morocco
| | - M El Hadek
- Laboratoire de génie des procédés, faculté des sciences d'Agadir, université Ibn Zohr, BP 28/S, Agadir, Morocco
| | - B Chebli
- Laboratoire de mécanique de procédé de l'énergie et de l'environnement, école nationale des sciences appliquées, université Ibn Zohr, BP 1136, Agadir, Morocco
| | - L M Idrissi Hassani
- Équipe Planta Sud, laboratoire de biotechnologies végétales, faculté des sciences d'Agadir, université Ibn Zohr, BP 28/S, Agadir, Morocco
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Özogul F, Kaçar Ç, Kuley E. The Impact of Carvacrol on Ammonia and Biogenic Amine Production by Common Foodborne Pathogens. J Food Sci 2015; 80:M2899-903. [PMID: 26580308 DOI: 10.1111/1750-3841.13140] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 10/05/2015] [Indexed: 11/28/2022]
Abstract
The impact of carvacrol at different levels (0.1%, 0.5%, and 1%) on ammonia (AMN) and biogenic amines (BAs) production by 8 common foodborne pathogens (FBPs) (Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Enterococcus faecalis, Pseudomonas aeruginosa, Listeria monocytogenes, Aeromonas hydrophila, and Salmonella Paratyphi A) was studied using a rapid high-performance liquid chromatography method. Significant differences among bacteria (P < 0.05) in AMN and BA production were observed using a tyrosine decarboxylase broth. Tyramine, dopamine, agmatine, spermine, and putrescine were the main amines produced by the bacteria. Tyramine production by P. aeruginosa was the highest (967 mg/L), whereas K. pneumoniae was the poorest tyramine producer (6.42 mg/L). AMN and BA production varied significantly depending on carvacrol levels and the specific bacterial strains. Tyramine production for all bacterial strains was significantly suppressed by addition of carvacrol at levels of 0.5% and 1%, but not 0.1%. Consequently, the effect of carvacrol on BA and AMN formation by FBP was dependent on bacterial strain as well as carvacrol level.
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Affiliation(s)
- Fatih Özogul
- Dept. of Seafood Processing Technology, Faculty of Fisheries, Cukurova Univ., 01330, Balcali, Adana, Turkey
| | - Çiğdem Kaçar
- Dept. of Seafood Processing Technology, Faculty of Fisheries, Cukurova Univ., 01330, Balcali, Adana, Turkey
| | - Esmeray Kuley
- Dept. of Seafood Processing Technology, Faculty of Fisheries, Cukurova Univ., 01330, Balcali, Adana, Turkey
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Influence of a blend of essential oils and an enzyme combination on growth performance, microbial counts, ileum microscopic anatomy and the expression of inflammatory mediators in weaned piglets following an Escherichia coli infection. Anim Feed Sci Technol 2015. [DOI: 10.1016/j.anifeedsci.2015.08.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Inhibition effects of carvacrol on biogenic amines formation by common food-borne pathogens in histidine decarboxylase broth. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2015.05.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Yu GJ, Choi IW, Kim GY, Hwang HJ, Kim BW, Kim CM, Kim WJ, Yoo YH, Choi YH. Induction of reactive oxygen species–mediated apoptosis by purified Schisandrae semen essential oil in human leukemia U937 cells through activation of the caspase cascades and nuclear relocation of mitochondrial apoptogenic factors. Nutr Res 2015; 35:910-920. [DOI: 10.1016/j.nutres.2015.06.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 06/15/2015] [Accepted: 06/30/2015] [Indexed: 10/23/2022]
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Topical Rosemary officinalis essential oil improves wound healing against disseminated Candida albicans infection in rat model. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/s00580-015-2086-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abrão PHO, Pizi RB, de Souza TB, Silva NC, Fregnan AM, Silva FN, Coelho LFL, Malaquias LCC, Dias ALT, Dias DF, Veloso MP, Carvalho DT. Synthesis and Biological Evaluation of New Eugenol Mannich Bases as Promising Antifungal Agents. Chem Biol Drug Des 2015; 86:459-65. [DOI: 10.1111/cbdd.12504] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 12/15/2014] [Indexed: 01/11/2023]
Affiliation(s)
- Pedro Henrique O. Abrão
- Laboratório de Pesquisa em Química Farmacêutica; Faculdade de Ciências Farmacêuticas; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva Alfenas MG 700 Brazil
| | - Rafael B. Pizi
- Laboratório de Pesquisa em Química Farmacêutica; Faculdade de Ciências Farmacêuticas; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva Alfenas MG 700 Brazil
| | - Thiago B. de Souza
- Laboratório de Pesquisa em Química Farmacêutica; Faculdade de Ciências Farmacêuticas; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva Alfenas MG 700 Brazil
| | - Naiara C. Silva
- Departamento de Microbiologia e Imunologia; Instituto de Ciências Biomédicas; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva 700 Alfenas Brazil
| | - Antonio M. Fregnan
- Laboratório de Pesquisa em Química Farmacêutica; Faculdade de Ciências Farmacêuticas; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva Alfenas MG 700 Brazil
| | - Fernanda N. Silva
- Laboratório de Pesquisa em Química Farmacêutica; Faculdade de Ciências Farmacêuticas; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva Alfenas MG 700 Brazil
| | - Luiz Felipe L. Coelho
- Departamento de Microbiologia e Imunologia; Instituto de Ciências Biomédicas; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva 700 Alfenas Brazil
| | - Luiz Cosme C. Malaquias
- Departamento de Microbiologia e Imunologia; Instituto de Ciências Biomédicas; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva 700 Alfenas Brazil
| | - Amanda Latercia T. Dias
- Departamento de Microbiologia e Imunologia; Instituto de Ciências Biomédicas; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva 700 Alfenas Brazil
| | - Danielle F. Dias
- Laboratório de Fitoquímica e Química Medicinal; Instituto de Química; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva Alfenas MG 700 Brazil
| | - Marcia P. Veloso
- Laboratório de Pesquisa em Química Farmacêutica; Faculdade de Ciências Farmacêuticas; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva Alfenas MG 700 Brazil
| | - Diogo T. Carvalho
- Laboratório de Pesquisa em Química Farmacêutica; Faculdade de Ciências Farmacêuticas; Universidade Federal de Alfenas; Rua Gabriel Monteiro da Silva Alfenas MG 700 Brazil
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Rambabu V, Suba S, Vijayakumar S. Antimicrobial and antiproliferative prospective of kosinostatin - a secondary metabolite isolated from Streptomyces sp. J Pharm Anal 2014; 5:378-382. [PMID: 29403952 PMCID: PMC5762245 DOI: 10.1016/j.jpha.2014.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 11/17/2014] [Accepted: 11/20/2014] [Indexed: 12/30/2022] Open
Abstract
Cancer is a communal health hazard worldwide. The present investigation attempts to evaluate antimicrobial and anticancer potential of kosinostatin on mammary carcinoma cell line (MCF-7). The anticancer and antiproliferative activities of kosinostatin were analyzed on MCF cell line by MTT assay and cytotoxicity assays like lactate dehydrogenase (LDH) and glutathione (GSH). The secondary metabolite kosinostatin exhibited its apoptotic nature by expressing p53 protein. Collectively, the results acquired from this study promise that kosinostatin shows the potent anticancer activity.
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Affiliation(s)
- Vinayagam Rambabu
- P.G. and Research Department of Botany and Microbiology, A.V.V.M. Sri Pushpam College (Autonomous), Poondi, Thanjavur, Tamil Nadu, India
| | | | - Suburamaniyan Vijayakumar
- P.G. and Research Department of Botany and Microbiology, A.V.V.M. Sri Pushpam College (Autonomous), Poondi, Thanjavur, Tamil Nadu, India
- Corresponding author. Tel.: +91 9003311921; fax: +91 4374239328.
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Crystallinity, antimicrobial activity and dyeing properties of chitosan-g-poly(N-acryloyl morpholine) copolymer. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.06.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ozkan G, Ozcan MM. Some phenolic compounds of extracts obtained from Origanum species growing in Turkey. ENVIRONMENTAL MONITORING AND ASSESSMENT 2014; 186:4947-57. [PMID: 24691738 DOI: 10.1007/s10661-014-3750-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Accepted: 03/18/2014] [Indexed: 06/03/2023]
Abstract
Caffeic acid, rosmarinic acid, rutin, apigenin 7-O-glucoside, apigenin, and acesetin were the main phenolic compounds of Origanum onites extracts in all applications. While acesetin contents ranged from 133.59 mg/100 g (U1) to 437.25 mg/100 g (S3), rosmarinic acid changed between 215.94 mg/100 g (U4) and 1120.56 mg/100 g (S2) in Origanum vulgare L. subsp. hirtum (Link) Ietsw. Both rosmarinic acid and acesetin were not found in U5 application. Only caffeic acid (19.39 mg/100 g) was found in U5 application. Rosmarinic acid contents of O. onites extract changed between 158.62 mg/100 g (U5) and 799.87 mg/100 g (S2). Generally, dominant phenolic compound of Origanum extracts was rosmarinic acid compared with other extracts. In addition, methanol:water:acetic acid mixture (S2) (95:4.5:0.5) was found as the best application. Phenolic contents of extracts obtained with U series mixtures were found low.
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Affiliation(s)
- Gülcan Ozkan
- Department of Food Engineering, Faculty of Engineering, University of Süleyman Demirel, 32000, Isparta, Turkey
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Thosar N, Basak S, Bahadure RN, Rajurkar M. Antimicrobial efficacy of five essential oils against oral pathogens: An in vitro study. Eur J Dent 2014; 7:S071-S077. [PMID: 24966732 PMCID: PMC4054083 DOI: 10.4103/1305-7456.119078] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Objectives: This study was aimed to find out the minimum inhibitory concentration (MIC) of five essential oils against oral pathogens and to find out the minimum bactericidal concentration (MBC) and minimum fungicidal concentration (MFC) of five essential oils against oral pathogens. Materials and Methods: The antimicrobial activities by detecting MIC and MBC/MFC of five essential oils such as tea tree oil, lavender oil, thyme oil, peppermint oil and eugenol oil were evaluated against four common oral pathogens by broth dilution method. The strains used for the study were Staphylococcus aureus ATCC 25923, Enterococcus fecalis ATCC 29212, Escherichia coli ATCC 25922 and Candida albicans ATCC 90028. Results: Out of five essential oils, eugenol oil, peppermint oil, tea tree oil exhibited significant inhibitory effect with mean MIC of 0.62 ± 0.45, 9.00 ± 15.34, 17.12 ± 31.25 subsequently. Mean MBC/MFC for tea tree oil was 17.12 ± 31.25, for lavender oil 151.00 ± 241.82, for thyme oil 22.00 ± 12.00, for peppermint oil 9.75 ± 14.88 and for eugenol oil 0.62 ± 0.45. E. fecalis exhibited low degree of sensitivity compared with all essential oils. Conclusion: Peppermint, tea tree and thyme oil can act as an effective intracanal antiseptic solution against oral pathogens.
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Affiliation(s)
- Nilima Thosar
- Department of Pedodontics and Preventive Dentistry, Sharad Pawar Dental College, Datta Meghe Institute of Medical Sciences (Deemed University), Wardha, Maharashtra, India
| | - Silpi Basak
- Department of Microbiology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Medical Sciences (Deemed University), Wardha, Maharashtra, India
| | | | - Monali Rajurkar
- Department of Microbiology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Medical Sciences (Deemed University), Wardha, Maharashtra, India
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Santin R, Giordani C, Madrid I, Matos C, Freitag R, Meireles M, Cleff M, Mello J. Atividade antifúngica do óleo essencial de Origanum vulgare frente a Malassezia pachydermatis. ARQ BRAS MED VET ZOO 2014. [DOI: 10.1590/1678-41626476] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objetivou-se com este estudo avaliar a atividade antifúngica in vitro do óleo essencial de Origanum vulgare frente a isolados clínicos de Malassezia pachydermatis. As folhas secas de O. vulgare foram adquiridas de distribuidor comercial com certificado de qualidade e origem e encaminhadas para extração do óleo essencial e cromatografia. Para realização do teste in vitro, foi utilizada a técnica de microdiluição em caldo (CLSI M27A3) com modificações para fitofármacos e M. pachydermatis. O óleo essencial de orégano foi testado nas concentrações de 28 a 0,87mg/mL diluído em caldo Sabouraud com 1% de tween 80. Todos os isolados foram testados em duplicata. Na análise cromatográfica do óleo essencial, foram identificados 12 compostos, sendo timol, a-terpineno e 4-terpineol os compostos majoritários. A CIM e a CFM dos 42 isolados de M. pachydermatis variaram de <0,87 a 7mg/mL, com valores de CIM50 e CIM90 de 1,18 e 3,28mg/mL, respectivamente. Com este estudo foi possível concluir que M. pachydermatis é sensível ao óleo essencial de orégano mesmo em concentrações baixas. Dessa maneira, o óleo essencial de orégano apresenta-se como promissor na bioprospecção de novos fármacos para o tratamento das otites e dermatites na clínica de pequenos animais.
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Affiliation(s)
- R. Santin
- Universidade Federal do Rio Grande do Sul
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Ličina BZ, Stefanović OD, Vasić SM, Radojević ID, Dekić MS, Čomić LR. Biological activities of the extracts from wild growing Origanum vulgare L. Food Control 2013. [DOI: 10.1016/j.foodcont.2013.03.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Srivatstava A, Ginjupalli K, Perampalli NU, Bhat N, Ballal M. Evaluation of the properties of a tissue conditioner containing origanum oil as an antifungal additive. J Prosthet Dent 2013; 110:313-9. [DOI: 10.1016/s0022-3913(13)60381-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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