The in vitro antibacterial effect of permethrin and formaldehyde on Staphylococcus aureus

This study investigated the effect of permethrin and formaldehyde on the growth ofStaphylococcus aureus, in particular MRSA strains. While permethrin alone was not bactericidal, formaldehyde both in the presence and absence of permethrin was. This was at concentrations of formaldehyde and permethrin found in the anti ‐scabies permethrin cream and suggests a potential use of such creams for treating bacterial skin infections, particularly refractory impetigo. AbstractAntibiotic ‐resistant strains of bacteria such as methicillin‐resistantStaphylococcus aureus are a threat to human health, and effective treatment options against them are needed. This study aimed to determine whether the insecticide permethrin was capable of inhibiting the growth ofS.  aureus or if some other component of a permethrin cream was responsible for a decrease in scabies associated bacterial infection previously observed. TenS.  aureus strains were grown in the presence of permethrin and formaldehyde both alone and in combination with percent inhibition determined by viable counts. Also, a time ‐kill assay was conducted onS.  aureus exposed to the same conditions. Finally, the morphology ofS.  aureus grown in the presence of permethrin was examined by scanning electron microscopy. Bacterial inhibition by permethrin ranged from 0% to 41% whereas inhibition by formaldehyde was 100%. The time ‐kill curves of permethrin exposed cells were very similar to the positive growth co...
Source: MicrobiologyOpen - Category: Microbiology Authors: Tags: ORIGINAL ARTICLE Source Type: research

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Authors: Reissier S, Cattoir V Abstract INTRODUCTION: Streptogramins (pristinamycin and quinupristin-dalfopristin) can be interesting options for the treatment of infections due to Gram-positive cocci, especially multidrug-resistant isolates. AREAS COVERED: This review provides an updated overview on structural and activity characteristics, mechanisms of action and resistance, pharmacokinetic/pharmacodynamic and clinical use of streptogramins. EXPERT OPINION: The streptogramin antibiotics act by inhibition of the bacterial protein synthesis. They are composed of two chemically distinct compounds, namely typ...
Source: Expert Review of Anti-Infective Therapy - Category: Infectious Diseases Tags: Expert Rev Anti Infect Ther Source Type: research
CONCLUSIONS: Immunohistochemistry seems to be a promising option not only in clinical recognition, but also in the selection and monitoring of treatment effects. However, these methods have not yet recommended for routine clinical use. PMID: 33032462 [PubMed - as supplied by publisher]
Source: Scandinavian Journal of Gastroenterology - Category: Gastroenterology Tags: Scand J Gastroenterol Source Type: research
CONCLUSIONS: Paramagnetic rims might be a characteristic MRI finding for MS, and therefore they have potential as an imaging marker for differentially diagnosing MS from NMOSD using 3-T MRI. PMID: 33029961 [PubMed]
Source: Journal of Clinical Neurology - Category: Neurology Tags: J Clin Neurol Source Type: research
This study investigated antibacterial-producing Streptomyces isolated from the gut of estuarine fish Chanos chanos, emphasizing screening for the producer of peptide-containing antibacterial compounds. Eighteen isolates were found during preliminary screening, in which four isolates showed the best antibacterial activities. Based on the morphological, physiological, and biochemical characterization, as well as 16S rRNA partial sequencing, all of the four isolates belonged to Streptomyces. Three isolates were suspected as novel isolate candidates based on homology presentations and phylogenetic tree analysis. Disk-diffusion...
Source: International Journal of Microbiology - Category: Microbiology Tags: Int J Microbiol Source Type: research
From 5G to a fancy scanner
Source: Reuters: Health - Category: Consumer Health News Source Type: news
Publication date: Available online 9 October 2020Source: Colloids and Surfaces B: BiointerfacesAuthor(s): Cezhi Du, Chengyong Wang, Jianbo Sui, Lijuan Zheng
Source: Colloids and Surfaces B: Biointerfaces - Category: Biochemistry Source Type: research
CONCLUSION: There is a high prevalence of MRSA causing abscesses in the Hispanic population evaluated in an ED in Puerto Rico. Systemic antibiotic use for the treatment of skin abscesses after incision and drainage remains high despite published guidelines arguing against their widespread use. Clindamycin resistance in our patient population appears to be more frequent than previously reported. PMID: 33031694 [PubMed - as supplied by publisher]
Source: Puerto Rico Health Sciences Journal - Category: International Medicine & Public Health Tags: P R Health Sci J Source Type: research
Background: Controversy exists regarding the need for proximal fibular epiphysiodesis in conjunction with proximal tibial epiphysiodesis to prevent relative overgrowth of the fibula. The purpose of this study was to determine the incidence of relative fibular overgrowth in patients who had undergone proximal tibial epiphysiodesis with or without proximal fibular epiphysiodesis to manage leg-length discrepancy. Methods: We identified patients who had undergone proximal tibial epiphysiodesis, with or without concomitant fibular epiphysiodesis, followed to skeletal maturity, and with adequate scanograms to measure tibial...
Source: Journal of Pediatric Orthopaedics - Category: Orthopaedics Tags: Leg Length Discrepancy Source Type: research
Conclusions: This study demonstrates that there is minimal error due to image acquisition and measurement when using a biplanar slot scanner. Biplanar slot scanning technology tended to underestimate the size of the marker; however, the least accurate measurements only erred by 1.5% from the true length. This indicates that unlike traditional radiographs the sources of error in biplanar slot scanning images are not due to parallax and are likely due to patient-specific factors and rather than the technology itself.
Source: Journal of Pediatric Orthopaedics - Category: Orthopaedics Tags: Scioliosis/Kyphosis Source Type: research
Publication date: December 2020Source: Microbial Pathogenesis, Volume 149Author(s): Cemile Selin Aksoy, Fatma Gizem Avci, Osman Mutluhan Ugurel, Basak Atas, Nihat Alpagu Sayar, Berna Sariyar Akbulut
Source: Microbial Pathogenesis - Category: Infectious Diseases Source Type: research
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