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Wyświetlanie 1-10 z 422
Tytuł:
Chemical Composition and Antimicrobial Activity of Selected Essential Oils against Staphylococcus spp. Isolated from Human Semen
Autorzy:
Štefániková, Jana
Vukovic, Nenad
Žiarovská, Jana
Tvrdá, Eva
Terentjeva, Margarita
Kowalczewski, Przemysław Łukasz
Savitskaya, Tatsiana
Kačániová, Miroslava
Grinshpan, Dmitrij
Wydawca:
MDPI
Cytata wydawnicza:
Kačániová M, Terentjeva M, Štefániková J, Žiarovská J, Savitskaya T, Grinshpan D, Kowalczewski PŁ, Vukovic N, Tvrdá E. Chemical Composition and Antimicrobial Activity of Selected Essential Oils against Staphylococcus spp. Isolated from Human Semen. Antibiotics. 2020; 9(11):765. https://doi.org/10.3390/antibiotics9110765; https://www.mdpi.com/2079-6382/9/11/765
Opis:
Staphylococcus spp. is not only a commensal bacteria but also a major human pathogen that causes a wide range of clinical infections. Recent evidence suggests that Staphylococcus has the ability to colonize the reproductive system and to affect its structure and functions. The objective of this study was to determine the chemical properties and antibacterial effects of select essential oils (EOs): Amyris balsamifera L., Boswellia carterii Birdw., Canarium luzonicum (Blume) A. Gray, Cinnamomum camphora (L.) J. Presl., Cinnamomum camphora var. linaloolifera Y. Fuita, Citrus x aurantium L., Gaultheria procumbens L., Litsea cubeba (Lour.) Pers., Melaleuca ericifolia Smith., Melaleuca leucadendra L., Pogostemon cablin (Blanco) Benth., Citrus limon (L.) Osbeck, Santalum album L., and Vetiveria zizanoides (L.) Roberty against 50 Staphylococcus spp. cultures isolated from human semen, specifically Staphylococcus aureus, S. capiti, S. epidermidis, S. haemoliticus, and S. hominis. The disc diffusion and broth microdilution methods were used to assess the antimicrobial potential and to determine the minimum inhibitory concentration (MIC) of the selected EOs. The best anti-Staphylococcus activities were found with both methods for the essential oils of C. luzonicum (Blume) A. Gray, A. balsamifera, C. camphora, and P. cabli.
Dostawca treści:
Repozytorium Centrum Otwartej Nauki
Artykuł
Tytuł:
In Vitro Antagonistic Effect of Gut Bacteriota Isolated from Indigenous Honey Bees and Essential Oils against Paenibacillus Larvae
Autorzy:
Kacániová, Miroslava
Žiarovská, Jana
Terentjeva, Margarita
Kowalczewski, Przemysław Łukasz
Wydawca:
MDPI
Cytata wydawnicza:
Kačániová M, Terentjeva M, Žiarovská J, Kowalczewski PŁ. In Vitro Antagonistic Effect of Gut Bacteriota Isolated from Indigenous Honey Bees and Essential Oils against Paenibacillus Larvae. International Journal of Molecular Sciences. 2020; 21(18):6736. https://doi.org/10.3390/ijms21186736; (https://www.mdpi.com/1422-0067/21/18/6736)
Opis:
The aim of study was to isolate and identify the gut bacteria of Apis mellifera and to evaluate antagonistic effect of the bacteriota against Paenibacillus larvae, which causes American foulbrood (AFB) in honeybees. The dilution plating method was used for the quantification of selected microbial groups from digestive tract of bees, with an emphasis on the bacteriota of the bees’ intestines. Bacteria were identified using mass spectrometry (MALDI-TOF-MS Biotyper). Overall, five classes, 27 genera and 66 species of bacteria were identified. Genera Lactobacillus (10 species) and Bacillus (8 species) were the most abundant. Gram-negative bacteria were represented with 16 genera, whereas Gram-positive with 10 genera. Delftia acidovorans and Escherichia coli were the most abundant in the digestive tract of honey bee. Resistance to a selection of antimicrobials was assessed for the bacterial isolates from bee gut and confirmed against all antimicrobials included in the study, with the exception of cefepime. Lactobacillus spp., especially L. kunkeei, L. crispatus and L. acidophilus. showed the strongest antimicrobial activity against P. larvae, the causal pathogen of AFB. Antimicrobial activity of essential oils against isolated bacteria and two isolates of P. larvae were assessed. Application of a broad selection of plant essential oils indicated that Thymus vulgaris had the highest antimicrobial activity against P. larvae.
Dostawca treści:
Repozytorium Centrum Otwartej Nauki
Artykuł
Tytuł:
Antimicrobial resistance in Rhodococcus equi
Autorzy:
Cisek, Agata
Rzewuska, Magdalena
Witkowski, Lucjan
Binek, Marian
Tematy:
antimicrobial susceptibility
Rhodococcus equi
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Wydawca:
Polskie Towarzystwo Biochemiczne
Powiązania:
https://bibliotekanauki.pl/articles/1039187.pdf  Link otwiera się w nowym oknie
Opis:
Rhodococcus equi is an important etiologic agent of respiratory- and non-respiratory tract infections, diseases of animals and humans. Therapy includes the use of various group of chemotherapeutic agents, however resistance acquirement is quite common. To date there is no preferred treatment protocol for infections caused by isolates resistant to macrolides and rifampicin. The resistance acquirement is a result of many molecular mechanisms, some of which include alterations in the cell envelope composition and structure, activity of the efflux pumps, enzymatic destruction or inactivation of antibiotics, and changes in the target site. This paper contains an overview of antimicrobial susceptibility of R. equi, and explains the possible molecular mechanisms responsible for antimicrobial resistance in this particular microorganism.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis characterization and antimicrobial activity of ethyl-4-(2,4-dichlorophenyl)-1,2,3,4-tetrahydro-6-methyl-2-thioxopyrimidine-5-carboxylate
Autorzy:
Pasupathi, M.
Santhi, N.
Tematy:
MIC
antimicrobial
mesoporous
pyrimidine
Pokaż więcej
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:
https://bibliotekanauki.pl/articles/1076112.pdf  Link otwiera się w nowym oknie
Opis:
Heteroatoms like nitrogen, sulfur, and oxygen containing biologically active ethyl 4-(2,4-dichlorophenyl)-1,2,3,4-tetrahydro-6-methyl-2-thioxopyrimidine-5-carboxylate was synthesized from 2,4-dichloro benzaldehyde, acetoacetic ester and thiourea using AlTiTUD-1 as a catalyst. The synthesized compound was characterized by FT-IR, 1H and 13C NMR spectral values. The compound possesses good antimicrobial activity is determined by well diffusion method against gram positive, gram negative and fungal species. The minimum inhibitory concentration value of the compound was determined by broth dilution method.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and antimicrobial activity of some new imidazolinone derivatives containing benzimidazole
Autorzy:
Mehta, P.
Davadra, P.
Shah, N.
Joshi, H.
Tematy:
benzimidazole
imidazolinone
antimicrobial activity
Pokaż więcej
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:
https://bibliotekanauki.pl/articles/411949.pdf  Link otwiera się w nowym oknie
Opis:
In this study some new o-benzimidazol-2'-yl-benzamido-p'-benzamido-2-phenyl-4-substituted phenyl-5-oxo-Imidazolines 3a-3j were synthesized. To synthesized target molecules we used various substituted oxazolone derivatives, synthesized from substituted benzaldehyde with hippuric acid. Substituted oxazolones 2a-2j were reacted with carbohydrazide derivative of benzimidazole 1 in presence of pyridine as base to obtained substituted imidazolinone derivatives. All synthesized compounds were characterized by IR, 1H NMR, elemental analysis and further supported by mass spectroscopy. All synthesized compounds were screened for their antimicrobial activity against gram positive and gram negative bacteria which showed moderate to good activity. All compounds showing good to moderate active against fungal strain as compare to standard drug.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis and antimicrobial activity of new adamantane derivatives I.
Autorzy:
Orzeszko, Andrzej
Gralewska, Renata
Starościak, Bohdan
Kazimierczuk, Zygmunt
Tematy:
imides
antimicrobial activity
adamantane derivatives
Pokaż więcej
Wydawca:
Polskie Towarzystwo Biochemiczne
Powiązania:
https://bibliotekanauki.pl/articles/1044397.pdf  Link otwiera się w nowym oknie
Opis:
A series of fourteen derivatives of adamantane was synthesised. The new compound 4-(adamant-1-ylmethoxycarbonyl)phthalanhydride obtained from 1-adamantane- methanol and trimellitic anhydride chloride appeared very useful for preparation of a number of N-substituted phthalimides. Antimicrobial activity of the newly obtained derivatives such as, for example, 4-(adamant-1-ylmethoxycarbonyl)-N-(5-carboxypentamethylene)phthalimide or 4-(adamant-1-ylmethoxycarbonyl)-N-(L-alanyl)phthalimide was tested against Staphylococcus aureus, Bacillus sp., Micrococcus flavus and Enterococcus faecium. The minimal inhibitory concentration (MIC) for these compounds against S. aureus were 0.022 and 0.05 μg/ml, respectively.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of antimicrobial resistance genes in intestinal content from Coyote (Canis latrans)
Autorzy:
López-Islas, J.J.
Méndez-Olvera, ET.
Reyes C, T.
Martínez-Gómez, D.
Tematy:
antimicrobial resistance
metagenome
Canis latrans
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Powiązania:
https://bibliotekanauki.pl/articles/16647515.pdf  Link otwiera się w nowym oknie
Opis:
Antibiotic resistance has become a global public health concern in the last few years. Given the widespread rate of recurrence, increasing attention is being turned toward environmental pathways that potentially contribute to antibiotic resistance genes (ARGs) dissemination outside the clinical realm. In this study, a metagenome analysis of intestinal virus-like particle fraction (VLPs) from a wild coyote (Canis latrans) revealed for the first time, multiple ARGs, such as B-lactamases and multidrug efflux pumps. Description of ARGs presence in natural environments is critical to understand the emergence of resistant strains.
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 422

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