scholarly journals Novel Alkylimidazolium Ionic Liquids as an Antibacterial Alternative to Pathogens of the Skin and Soft Tissue Infections

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2354 ◽  
Author(s):  
Oscar Forero Doria ◽  
Ricardo Castro ◽  
Margarita Gutierrez ◽  
Diego Gonzalez Valenzuela ◽  
Leonardo Santos ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Ionic Liquids ◽  
Soft Tissue ◽  
Inhibitory Concentration ◽  
Membrane Surface ◽  
Soft Tissue Infections ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Antibacterial Screening ◽  
Mic Value

Keeping in mind the concept of green chemistry, this research aims to synthesize and characterize new ionic liquids (ILs) derived from N-cinnamyl imidazole with different sizes of alkyl chains (1, 6, 8, and 10 carbon atoms), and evaluate their antibacterial activity against Skin and soft tissue infections (SSTIs) causative bacteria. The antibacterial screening was carried out by agar well diffusion and the Minimum Inhibitory Concentration (MIC) and Half Maximum Inhibitory Concentration (IC50) of the different ILs were determined by microdilution in broth, also Molecular dynamics simulations were performed to study the interaction mechanism between ILs and membranes. The MIC value in Gram-positive bacteria showed that as the hydrocarbon chain increases, the MIC value decreases with a dose-dependent effect. Furthermore, Gram-negative bacteria showed high MIC values, which were also evidenced in the antibacterial screening. The molecular dynamics showed an incorporation of the ILs with the longer chain (10 C), corresponding to a passive diffusion towards the membrane surface, for its part, the ILs with the shorter chain due to its lack of hydrophobicity was not incorporated into the bilayer. Finally, the new ILs synthesized could be an alternative for the treatment of Gram-positive bacteria causative of SSTIs.

scholarly journals Telavancin Versus Standard Therapy for Treatment of Complicated Skin and Soft-Tissue Infections Due to Gram-Positive Bacteria

2005 ◽  
Vol 40 (11) ◽  
pp. 1601-1607 ◽  
Author(s):  
M. E. Stryjewski ◽  
W. D. O'Riordan ◽  
W. K. Lau ◽  
F. D. Pien ◽  
L. M. Dunbar ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Standard Therapy ◽  
Soft Tissue Infections ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Complicated Skin

Randomized Comparison Trial of Teicoplanin IV, Teicoplanin IM, and Cefazolin Therapy for Skin and Soft Tissue Infections Caused by Gram-Positive Bacteria

1994 ◽  
Vol 87 (9) ◽  
pp. 875-880 ◽  
Author(s):  
VALERIE A. CHIRURGI ◽  
HOWARD EDELSTEIN ◽  
SHARON E. OSTER ◽  
RICHARD KARP ◽  
KAREN B. CASSANO ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Soft Tissue Infections ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Comparison Trial

scholarly journals 289. Impact of Clinician Specialty on the Use of Oral Antibiotic Therapy for Definitive Treatment of Uncomplicated Bloodstream Infections

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S144-S145
Author(s):  
Jasmine R Marcelin ◽  
Mackenzie R Keintz ◽  
Jihyun Ma ◽  
Erica J Stohs ◽  
Bryan Alexander ◽  
...  
Keyword(s):  
Social Media ◽  
Soft Tissue ◽  
Infectious Diseases ◽  
Antibiotic Therapy ◽  
Bloodstream Infections ◽  
Definitive Treatment ◽  
Oral Antibiotic ◽  
Soft Tissue Infections ◽  
Gram Positive ◽  
Oral Antibiotic Therapy

Abstract Background No established guidelines exist regarding the role of oral antibiotic therapy (OAT) to treat uncomplicated bloodstream infections (uBSIs) and practices may vary depending on clinician specialty and experience. Methods An IRB-exempt web-based survey was emailed to Nebraska Medicine clinicians caring for hospitalized patients, and widely disseminated using social media. The survey was open access and once disseminated on social media, it was impossible to ascertain the total number of individuals who received the survey. Chi-squared analysis for categorical data was conducted to evaluate the association between responses and demographic groups. Results Of 275 survey responses, 51% were via social media, and 94% originated in the United States. Two-thirds of respondents were physicians, 16% pharmacists, and infectious diseases clinicians (IDC) represented 71% of respondents. The syndromes where most were comfortable using OAT routinely for uBSI were urinary tract infection (92%), pneumonia (82%), pyelonephritis (82%), and skin/soft tissue infections (69%). IDC were more comfortable routinely using OAT to treat uBSIs associated with vertebral osteomyelitis and prosthetic joint infections than non-infectious diseases clinicians (NIDC), but NIDC were more likely to report comfort with routine use of OAT to treat uBSIs associated with meningitis and skin/soft tissue infections. IDC were more likely to report comfort with routine use of OAT for uBSIs due to Enterobacteriaceae and gram-positive anaerobes, while NIDC were more likely to be comfortable with routinely using OAT to treat uBSIs associated with S. aureus, coagulase-negative staphylococci and gram-positive bacilli. In one clinical vignette of S. aureus uBSI due to debrided abscess, 11% of IDC would be comfortable using OAT vs 28% of NIDC; IDC were more likely to report routinely repeating blood cultures (99% vs 83%, p< 0.05). Figure 1: Clinician comfort using oral antibiotic therapy to treat uncomplicated bacteremia due to specific syndromes Figure 2: Clinician comfort using oral antibiotic therapy to treat uncomplicated bacteremia due to specific organisms Conclusion Considerable variation in comfort using OAT for uBSIs among IDC vs NIDC exists, highlighting opportunities for IDC to continue to demonstrate their value in clinical practice. Understanding the reasons for variability may be helpful in creating best practice guidelines to standardize decision making. Disclosures All Authors: No reported disclosures

Antimicrobial Activity of Fractions and Compounds from Calophyllum brasiliense (Clusiaceae/Guttiferae)

2004 ◽  
Vol 59 (9-10) ◽  
pp. 657-662 ◽  
Author(s):  
Juliana B. Pretto ◽  
Valdir Cechinel-Filho ◽  
Vânia F. Noldin ◽  
Mara R. K. Sartori ◽  
Daniela E. B Isaias ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Pathogenic Bacteria ◽  
Protocatechuic Acid ◽  
Inhibitory Concentration ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Methanolic Extracts ◽  
Calophyllum Brasiliense

Abstract Calophyllum brasiliense (Clusiaceae/Guttiferae) is a native Brazilian medicinal plant traditionally used against several diseases, including infectious pathologies. Crude methanolic extracts (CME) and two fractions, denoted non-polar (soluble in chloroform) and polar (nonsoluble in chloroform), were prepared from different parts of the plant (roots, stems, leaves, flowers and fruits) and studied. The following compounds were isolated and tested against pathogenic bacteria and yeasts by determination of the minimal inhibitory concentration (MIC): brasiliensic acid (1), gallic acid (2), epicatechin (3), protocatechuic acid (4), friedelin (5) and 1,5-dihydroxyxanthone (6). The results indicated that all the parts of the plant exhibited antimicrobial activity against Gram-positive bacteria, which are selectively inhibited by components of C. brasiliense. No activity was observed against Gram-negative bacteria and yeasts tested. Regarding the isolated compounds, substance 4 showed antimicrobial activity against all the tested microorganisms, whereas compound 6 exhibited antimicrobial activity only against Gram-positive bacteria. The results from the current study confirm and justify the popular use of this plant to treat infectious processes.

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