Antimicrobial potential of Pectis substriata essential oil (Asteraceae) against drug-resistant Staphylococcus strains. 2020

Genilson S DE Jesus, and Ana C Micheletti, and Karen M Takahashi, and Tatiana Matayoshi, and Arnildo Pott, and NÍdia C Yoshida
Universidade Federal de Mato Grosso do Sul, Instituto de Química, Av. Senador Filinto Müller, 1555, Jardim Ipiranga, 79074-460 Campo Grande, MS, Brazil.

Resistant bacterial infections represent one of the major threats in worldwide health services. In this scenario, plant essential oils are considered promising antimicrobial agents. Therefore, this study aimed to evaluate the antimicrobial potential of Pectis substriata essential oil alone and in combination with antibiotics, against clinical drug-resistant bacterial strains. The essential oil from the plant aerial parts was obtained by hydrodistillation. Antimicrobial activity was assessed against standard and clinical bacterial strains by broth microdilution method, and the synergistic effect was evaluated by checkerboard microtiter assay. The oil alone showed significant activity against clinical Staphylococcus warneri (62.5 µg.mL-1), and was moderately active on Staphylococcus aureus (standard strain) and clinical Staphylococcus intermedius (125 and 250 µg.mL-1, respectively). Synergism was achieved for the combinations of essential oil and ampicillin on S. warneri and of oil and kanamycin on S. intermedius. Additive effects were also observed. This is the first report of the chemical composition of P. substriata essential oil, and the results revealed the presence of compounds with proven antimicrobial activity. The oil proved active against resistant Gram-positive cocci, and showed synergism with antibiotics, revealing its potential use as adjuvant or in the development of new alternative treatments of drug-resistant antimicrobial infections.

UI MeSH Term Description Entries
D008826 Microbial Sensitivity Tests Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses). Bacterial Sensitivity Tests,Drug Sensitivity Assay, Microbial,Minimum Inhibitory Concentration,Antibacterial Susceptibility Breakpoint Determination,Antibiogram,Antimicrobial Susceptibility Breakpoint Determination,Bacterial Sensitivity Test,Breakpoint Determination, Antibacterial Susceptibility,Breakpoint Determination, Antimicrobial Susceptibility,Fungal Drug Sensitivity Tests,Fungus Drug Sensitivity Tests,Sensitivity Test, Bacterial,Sensitivity Tests, Bacterial,Test, Bacterial Sensitivity,Tests, Bacterial Sensitivity,Viral Drug Sensitivity Tests,Virus Drug Sensitivity Tests,Antibiograms,Concentration, Minimum Inhibitory,Concentrations, Minimum Inhibitory,Inhibitory Concentration, Minimum,Inhibitory Concentrations, Minimum,Microbial Sensitivity Test,Minimum Inhibitory Concentrations,Sensitivity Test, Microbial,Sensitivity Tests, Microbial,Test, Microbial Sensitivity,Tests, Microbial Sensitivity
D009822 Oils, Volatile Oils which evaporate readily. The volatile oils occur in aromatic plants, to which they give odor and other characteristics. Most volatile oils consist of a mixture of two or more TERPENES or of a mixture of an eleoptene (the more volatile constituent of a volatile oil) with a stearopten (the more solid constituent). The synonym essential oils refers to the essence of a plant, as its perfume or scent, and not to its indispensability. Essential Oil,Oil, Essential,Oil, Volatile,Oils, Essential,Volatile Oil,Essential Oils,Volatile Oils
D004364 Pharmaceutical Preparations Drugs intended for human or veterinary use, presented in their finished dosage form. Included here are materials used in the preparation and/or formulation of the finished dosage form. Drug,Drugs,Pharmaceutical,Pharmaceutical Preparation,Pharmaceutical Product,Pharmaceutic Preparations,Pharmaceutical Products,Pharmaceuticals,Preparations, Pharmaceutical,Preparation, Pharmaceutical,Preparations, Pharmaceutic,Product, Pharmaceutical,Products, Pharmaceutical
D000890 Anti-Infective Agents Substances that prevent infectious agents or organisms from spreading or kill infectious agents in order to prevent the spread of infection. Anti-Infective Agent,Anti-Microbial Agent,Antimicrobial Agent,Microbicide,Microbicides,Anti-Microbial Agents,Antiinfective Agents,Antimicrobial Agents,Agent, Anti-Infective,Agent, Anti-Microbial,Agent, Antimicrobial,Agents, Anti-Infective,Agents, Anti-Microbial,Agents, Antiinfective,Agents, Antimicrobial,Anti Infective Agent,Anti Infective Agents,Anti Microbial Agent,Anti Microbial Agents
D000900 Anti-Bacterial Agents Substances that inhibit the growth or reproduction of BACTERIA. Anti-Bacterial Agent,Anti-Bacterial Compound,Anti-Mycobacterial Agent,Antibacterial Agent,Antibiotics,Antimycobacterial Agent,Bacteriocidal Agent,Bacteriocide,Anti-Bacterial Compounds,Anti-Mycobacterial Agents,Antibacterial Agents,Antibiotic,Antimycobacterial Agents,Bacteriocidal Agents,Bacteriocides,Agent, Anti-Bacterial,Agent, Anti-Mycobacterial,Agent, Antibacterial,Agent, Antimycobacterial,Agent, Bacteriocidal,Agents, Anti-Bacterial,Agents, Anti-Mycobacterial,Agents, Antibacterial,Agents, Antimycobacterial,Agents, Bacteriocidal,Anti Bacterial Agent,Anti Bacterial Agents,Anti Bacterial Compound,Anti Bacterial Compounds,Anti Mycobacterial Agent,Anti Mycobacterial Agents,Compound, Anti-Bacterial,Compounds, Anti-Bacterial
D013210 Staphylococcus A genus of gram-positive, facultatively anaerobic, coccoid bacteria. Its organisms occur singly, in pairs, and in tetrads and characteristically divide in more than one plane to form irregular clusters. Natural populations of Staphylococcus are found on the skin and mucous membranes of warm-blooded animals. Some species are opportunistic pathogens of humans and animals.
D055624 Methicillin-Resistant Staphylococcus aureus A strain of Staphylococcus aureus that is non-susceptible to the action of METHICILLIN. The mechanism of resistance usually involves modification of normal or the presence of acquired PENICILLIN BINDING PROTEINS. MRSA,Methicillin Resistant Staphylococcus aureus
D019659 Asteraceae A large plant family of the order Asterales, subclass Asteridae, class Magnoliopsida. The family is also known as Compositae. Flower petals are joined near the base and stamens alternate with the corolla lobes. The common name of "daisy" refers to several genera of this family including Aster; CHRYSANTHEMUM; RUDBECKIA; TANACETUM. Aspilia,Carpesium,Clibadium,Compositae,Doronicum,Emilia Plant,Heterotheca,Iostephane,Leopard's Bane, False,Lychnophora,Phagnalon,Sphaeranthus,Trixis,Viguiera,Enhydra fluctuans,Ixeris,Pseudognaphalium,Silphium,Aspilias,Bane, False Leopard's,Banes, False Leopard's,Carpesiums,Clibadiums,Doronicums,Emilia Plants,Enhydra fluctuan,False Leopard's Bane,False Leopard's Banes,Heterothecas,Iostephanes,Ixeri,Leopard Bane, False,Leopard's Banes, False,Leopards Bane, False,Lychnophoras,Phagnalons,Plant, Emilia,Plants, Emilia,Pseudognaphaliums,Silphiums,Trixi,Viguieras,fluctuan, Enhydra

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