Abstract:
OBJECTIVES:Scorpion venoms are a rich source of bioactive peptides with promising clinical value that may lead to the discovery and development of new drugs. The present study was designed to evaluate the in vitro antimicrobial activities of the venoms extracted from three medically important Saudi scorpions (Androctonus crassicauda, Androctonus bicolor and Leiurus quinquestriatus). METHODS:Antimicrobial assays were performed using a microplate growth inhibition assay against 10 multidrug-resistant (MDR) micro-organisms (4 Gram-negative bacteria, 2 Gram-positive bacteria and 4 fungi and yeasts) at concentrations ranging from 0 to 20mg/mL of each venom. Following qualitative analysis, dose-response assays were performed for bacterial and fungal killing curves using the MTT colorimetric assay. RESULTS:Among the three tested scorpion venoms, only L. quinquestriatus venom showed significant broad-spectrum antimicrobial activity in a dose-dependent manner from 5 to 20mg/mL. Leiurus quinquestriatus venom inhibited the growth and survival of MDR Escherichia coli (55.2%), Acinetobacter baumannii (50.6%), Klebsiella pneumoniae (35.1%), Pseudomonas aeruginosa (31.3%), Staphylococcus aureus (36.4%), Enterococcus faecalis (47.6%), Candida albicans (31.2%) and Candida glabrata (39.0%), whereas no significant activity against Fusarium oxysporum and Aspergillus flavus was observed. In contrast, the venoms of A. crassicauda and A. bicolor did not show noticeable antimicrobial activity against any of the tested organisms. CONCLUSIONS:The findings of the current study demonstrate that L. quinquestriatus venom possesses antimicrobial activity and thus can be used as a template for designing and development of novel antimicrobial drugs.
journal_name
J Glob Antimicrob Resistjournal_title
Journal of global antimicrobial resistanceauthors
Al-Asmari AK,Alamri MA,Almasoudi AS,Abbasmanthiri R,Mahfoud Mdoi
10.1016/j.jgar.2017.03.008subject
Has Abstractpub_date
2017-09-01 00:00:00pages
14-18eissn
2213-7165issn
2213-7173pii
S2213-7165(17)30073-5journal_volume
10pub_type
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
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journal_title:Journal of global antimicrobial resistance
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doi:10.1016/j.jgar.2016.02.003
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abstract::Selection of resistant pathogens by antimicrobial use is probably the most important cause of antimicrobial resistance. Antimicrobial stewardship (AMS) refers to a multifaceted approach to optimise prescribing. The benefits of AMS programmes have been widely demonstrated in terms of reductions in antimicrobial use, mo...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章,评审
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abstract:OBJECTIVES:We analysed the concordance of rectal swab isolates and blood culture for Gram-negative bacteria (GNB) isolates in neonates with a suspicion of neonatal sepsis admitted to a neonatal care unit in Haiti. METHODS:We matched pairs of blood and rectal samples taken on the date of suspected sepsis onset in the s...
journal_title:Journal of global antimicrobial resistance
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abstract::Mycobacterium tuberculosis is naturally resistant to clarithromycin (CLR). The genes Rv3197A (whiB7) and Rv1988 (ermMT) have been shown to be involved in the resistant phenotype. In this study, a CLR-susceptible M. tuberculosis clinical strain was identified, designated as DS3214, and the nucleotide sequences and expr...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2015.07.004
更新日期:2015-12-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to evaluate the efficacy of pyrimethamine-loaded poloxamer 407 nanomicelles on Plasmodium berghei strain NICD in vivo. METHODS:Pyrimethamine-loaded nanomicelles were prepared and their zeta potential, particle size and polydispersity index were measured. For antiplasmodial assessme...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.08.002
更新日期:2020-03-01 00:00:00
abstract:BACKGROUND:OXA-48 is an Ambler class D β-lactamase that hydrolyses penicillin and imipenem but has poor hydrolytic activity against cephalosporins. However, very few clinical experiences of treating extended-spectrum β-lactamase (ESBL)-negative OXA-48 producers with cephalosporins have been published. OBJECTIVES:The a...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.02.016
更新日期:2019-12-01 00:00:00
abstract:OBJECTIVES:Escherichia coli and Enterobacter cloacae are two major pathogens causing urinary tract infection (UTI). Here we characterised the genome of an NDM-1-producing E. cloacae strain and an extended-spectrum β-lactamase (ESBL)-producing E. coli strain that were co-isolated from a UTI. METHODS:The genomes of E. c...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.04.007
更新日期:2019-06-01 00:00:00
abstract::Uropathogenic Escherichia coli (UPEC) is the most frequent cause of urinary tract infection (UTI). Virulence factors (VFs) of UPEC in children are not well known. Circulating antibiotic resistance mechanisms in the community are increasing. In this study, the aetiological agents of UTI and antibiotic resistance mechan...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2014.08.003
更新日期:2014-12-01 00:00:00
abstract:OBJECTIVES:The present study aimed to screen for the presence of extended-spectrum β-lactamase (ESBL)-producing Enterobacteriaceae in wild boars and Barbary macaques in Béjaïa and Jijel, Algeria. METHODS:A total of 216 faecal samples collected between September 2014 and August 2015 were cultured on MacConkey agar supp...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2016.10.005
更新日期:2017-03-01 00:00:00
abstract:OBJECTIVES:Antibiotic resistance among Gram-negative pathogens isolated from ventilator-associated pneumonia (VAP) poses a grave threat in intensive care unit (ICU) patients. The aim of this study was to assess the prevalence of pathogens in ICU patients and their drug resistance profile. The prevalence of extended-spe...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2016.12.016
更新日期:2017-06-01 00:00:00
abstract:OBJECTIVES:The aims of this study were (i) to determine the frequency of plasmid-mediated resistance to fluoroquinolones (FQs) in Escherichia coli isolated from patients with urinary tract infections (UTIs) of nosocomial and community origin and (ii) to determine the relationships between the presence of extended-spect...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2017.12.013
更新日期:2018-06-01 00:00:00
abstract:OBJECTIVES:Vancomycin is the primary treatment for methicillin-resistant Staphylococcus aureus (MRSA). However, an increasing proportion of MRSA isolates with high minimum inhibitory concentrations (MICs) within the susceptible range (vancomycin 'MIC creep') is being observed. The aim of this study was to assess the va...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2017.04.007
更新日期:2017-09-01 00:00:00
abstract:OBJECTIVES:Marine bivalves can act as bioindicators of marine environment pollution by multidrug-resistant (MDR) enteric bacteria of medical interest. The aim of this study was to report the draft genome sequence of a plasmid-encoded AmpC (pAmpC) (CMY-2)-carrying Escherichia coli isolate recovered from a marine bivalve...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2018.06.010
更新日期:2018-09-01 00:00:00
abstract::Antibiotics are frequently used in food animal production in developing countries to promote the well-being and growth of animals. This practice provides some economic benefits to producers and consumers at large. Nevertheless, this practice is also associated with a number of concerns. A major concern has been that r...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章,评审
doi:10.1016/j.jgar.2019.07.031
更新日期:2020-03-01 00:00:00
abstract:OBJECTIVES:Farm animals have been recognised as important carriers and reservoirs of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli. The aim of this study was to report the draft genome sequences of two multidrug-resistant (MDR) CTX-M-15-producing E. coli strains (47VL and 13B) isolated from different ...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2017.10.009
更新日期:2017-12-01 00:00:00
abstract:OBJECTIVES:Citrobacter spp. are part of normal human and animal intestinal flora. Citrobacter portucalensis (C. portucalensis) is closely related to Citrobacter freundii, which is an emerging opportunistic nosocomial pathogen. The aim of this study was to retrieve colistin-resistant Citrobacter spp. from poultry in Ban...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.05.031
更新日期:2019-09-01 00:00:00
abstract::Antibiotic resistance genes are rapidly spread between pathogens and the normal flora, with plasmids playing an important role in their circulation. This study aimed to investigate antibiotic resistance plasmids in the gut microbiome of hospitalised patients. Stool samples were collected from seven inpatients at Sirir...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2016.03.001
更新日期:2016-09-01 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.05.001
更新日期:2019-12-01 00:00:00
abstract:OBJECTIVES:Multidrug-resistant (MDR) enterococci are found extensively in food samples. This study characterized the phenotypic virulence factors and the ability of horizontal gene transfer of a streptomycin resistance gene among enterococci isolated from fermented pork. METHODS:Thirty-six MDR enterococci were subject...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.04.016
更新日期:2020-09-01 00:00:00
abstract:OBJECTIVES:To determine the contribution of specific uropathogenic Escherichia coli (UPEC) lineages, drug resistance genes, and plasmid incompatibility/replicon (Inc) groups to the prevalence of β-lactam-resistant urinary tract infections (UTIs) in a university community. METHODS:Urine samples were consecutively colle...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.03.002
更新日期:2019-12-01 00:00:00
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journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.02.020
更新日期:2020-06-01 00:00:00
abstract::This study aimed to evaluate the clinical outcomes of vancomycin-resistant enterococcal bloodstream infections (VRE BSI) caused by Enterococcus gallinarum or Enterococcus casseliflavus. Variables associated with treatment failure were determined and treatment options were compared. This was a national retrospective st...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2015.12.002
更新日期:2016-06-01 00:00:00
abstract:OBJECTIVES:The emergence of multidrug-resistance (MDR) in Streptococcus pneumoniae clones and non-vaccine serotypes necessitate the development of novel treatment strategies. This work aimed to determine the efficacy of the Mn complex [Mn(CO)3(tpa-κ3N)]Br against clinically important MDR strains of S. pneumoniae. METH...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.04.031
更新日期:2020-09-01 00:00:00
abstract:OBJECTIVES:Infections caused by multidrug-resistant Gram-negative bacteria are associated with high mortality. A relevant concern is the efficacy of antibiotic therapy in burn patients in whom pathophysiological changes strongly influence pharmacokinetic (PK) parameters. This study aimed to describe the PK parameters o...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2019.06.011
更新日期:2020-03-01 00:00:00
abstract:OBJECTIVES:Malaria treatment is impeded by increasing resistance to conventional antimalarial drugs. Here we explored the activity of ten novel benzothiophene, thiophene and benzene aminoquinolines. METHODS:In vitro testing was performed by the lactate dehydrogenase assay in chloroquine (CQ)-sensitive Plasmodium falci...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2020.07.027
更新日期:2020-12-01 00:00:00
abstract:OBJECTIVES:The aim of study was to evaluate by comparative study the level of selection of antibiotic-resistant Enterobacteriaceae in the digestive microbiota of piglets when using amoxicillin and Algo-Bio®. METHODS:Amoxicillin and Algo-Bio® administration was carried out over a period of 5 days (D0-D4) at a dose of 1...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2018.01.008
更新日期:2018-06-01 00:00:00
abstract:OBJECTIVES:Here we describe a clinical isolate of Klebsiella pneumoniae ST11 harbouring both blaKPC-2 and rmtB genes in Japan. METHODS:A carbapenem- and aminoglycoside-resistant K. pneumoniae was isolated from an inpatient in Japan. Whole-genome sequencing (WGS) was performed using an Illumina next-generation sequence...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2018.11.026
更新日期:2019-06-01 00:00:00
abstract:OBJECTIVES:This study examined the antimicrobial susceptibility and resistance mechanisms of Clostridium difficile recovered in Greek hospitals during 2012-2015. METHODS:C. difficile isolates (n=88) were collected from clinically-confirmed C. difficile infection from symptomatic patients in 10 Greek hospitals. Minimum...
journal_title:Journal of global antimicrobial resistance
pub_type: 杂志文章
doi:10.1016/j.jgar.2018.09.009
更新日期:2019-03-01 00:00:00