The antiviral drug efavirenz reduces biofilm formation and hemolysis by Staphylococcus aureus

Conclusion. Efavirenz inhibits S. aureus biofilm formation and virulence in vitro.PMID:34668851 | DOI:10.1099/jmm.0.001433
Source: Journal of Medical Microbiology - Category: Microbiology Authors: Source Type: research

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Farnesyltransferase inhibitors (FTIs) are focus for the treatment of several diseases, particularly in the field of cancer therapy. Their potential, however, goes even further, as a number of studies have evaluated FTIs for the treatment of infectious diseases such as malaria, African sleeping sickness, leishmaniosis, and hepatitis D virus infection. Little is known about protein prenylation mechanisms in human pathogens. However, disruption of IspA, a gene encoding the geranyltranstransferase of Staphylococcus aureus (S. aureus) leads to reprogramming of cellular behavior as well as impaired growth and decreased resistanc...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Bioorg Chem. 2021 Nov 8;118:105470. doi: 10.1016/j.bioorg.2021.105470. Online ahead of print.ABSTRACTMesoporous silica nanoparticles (MNs) emerged as new promising drug-delivery platforms capable to overcome resistance in bacteria. Dual loading of drugs on these nanocarriers, exploiting synergistic interactions between the nanoparticles and the drugs, could be considered as a way to increase the efficacy against resistant bacteria with a positive effect even at very low concentrations. Considering that patients with cancer are highly susceptible to almost any type of bacterial infections, in this work, nanocarriers mesopor...
Source: Bioorganic Chemistry - Category: Chemistry Authors: Source Type: research
Conclusion. Efavirenz inhibits S. aureus biofilm formation and virulence in vitro.PMID:34668851 | DOI:10.1099/jmm.0.001433
Source: Journal of Medical Microbiology - Category: Microbiology Authors: Source Type: research
CONCLUSION: The study revealed an alarming rate of resistance to the commonly used antimicrobial agents used in treating HAIs. Also the relationship between AMR and some risk factors and thus taking steps towards controlling them have been shown.PMID:34540152 | PMC:PMC8408023 | DOI:10.18502/ijm.v13i2.5978
Source: Iranian Journal of Microbiology - Category: Microbiology Authors: Source Type: research
We present a patient with the typical manifestations of CBP. The patient underwent multiple courses of antibiotic treatment without any long-term resolution of his symptoms. Testing of prostatic secretion and semen samples revealed pathogenic bacteria in each case, which collectively included members of the Staphylococcal species such as Methicillin resistant Staphylococcus aureus (MRSA) and Staphylococcus haemolyticus, Enterococcus faecalis, and Streptococcus mitis, among others.Methods and Outcome: Bacteriophage preparations from the Eliava Institute were used to treat the patient after establishing phage sensitivity to ...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
Bioorg Med Chem. 2021 Apr 2;38:116142. doi: 10.1016/j.bmc.2021.116142. Online ahead of print.ABSTRACTMulti- drug resistant microbial pathogens are a serious global health problem and thus new antibacterial agents, which are effective both alone and in combination with traditional antibiotics, are urgently needed. Hence, the objective of the present study was to investigate the antibacterial activity of 6β-hydroxy-3-oxolup-20(29)-en-28-oic acid (6β-hydroxy betunolic acid) isolated from the bark of Schumacheria castaneifolia and its effect when combined with oxacillin. Antibacterial potential of 6β-hydroxy bet...
Source: Bioorganic and Medicinal Chemistry - Category: Chemistry Authors: Source Type: research
Khondaker Miraz Rahman Two new epimeric bibenzylated monoterpenes machaerifurogerol (1a) and 5-epi-machaerifurogerol (1b), and four known isoflavonoids (+)-vestitol (2), 7-O-methylvestitol (3), (+)-medicarpin (4), and 3,8-dihydroxy-9-methoxypterocarpan (5) were isolated from Machaerium Pers. This plant was previously assigned as Machaerium multiflorum Spruce, from which machaeriols A-D (6–9) and machaeridiols A-C (10–12) were reported, and all were then re-isolated, except the minor compound 9, for a comprehensive antimicrobial activity evaluation. Structures of the isolated compounds were determ...
Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research
Authors: Phuyal N, Jha PK, Raturi PP, Rajbhandary S Abstract Crude methanol extracts of fruits, seeds, and bark of Zanthoxylum armatum were investigated in vitro for antimicrobial activities against 9 different bacterial strains: Bacillus subtilis, Enterococcus faecalis, Proteus vulgaris, Pseudomonas aeruginosa, Salmonella typhi, Shigella dysenteriae, Staphylococcus aureus, methicillin-resistant Staphylococcus aureus (MRSA), and Staphylococcus epidermidis using agar well diffusion method, and the MBC values were determined. Only 5 bacteria, i.e., Bacillus subtilis, Enterococcus faecalis, MRSA, Staphylococcus aureus...
Source: Journal of Tropical Medicine - Category: Tropical Medicine Tags: J Trop Med Source Type: research
Conclusions and Relevance: In this study, most patients with community-onset sepsis did not have resistant pathogens, yet broad-spectrum antibiotics were frequently administered. Both inadequate and unnecessarily broad empiric antibiotics were associated with higher mortality. These findings underscore the need for better tests to rapidly identify patients with resistant pathogens and for more judicious use of broad-spectrum antibiotics for empiric sepsis treatment.
Source: Current Awareness Service for Health (CASH) - Category: Consumer Health News Source Type: news
In conclusion, our work may pave the way for the development of indole derivatives as adjuvants to potentiate aminoglycosides against gram-positive pathogens.
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
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