Effect of Combined Plant Essential Oils on Dermanyssus gallinae: In vitro and in vivo study

Amer, Aziza Mm; Amer, M. M.; Mekky, Hoda M.; Fedawy, Hanaa S.

doi:10.36380/scil.2020.wvj26

Cited by 4 publications

(3 citation statements)

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“…However, lower resistance against first generation was recorded by Talavera-González et al ( 2021). The resistance against second generation FQs; ENR, CIP, and NOR in the current study (72.2%, 65.3%, and 58.3% respectively) was close to results from previous findings (Ammar et al, 2015;Agabou et al, 2016;Abo-Amer et al, 2018;Amer et al, 2018;Kim et al, 2020;Effendi et al, 2021), while higher rates were reported by El-Shazly et al ( 2017), and lower rates were recorded by Khalaf et al (2020). These variations in resistance rates may be attributed to the varied levels of Qs and FQs use in animal production in different regions (Mehdi et al, 2018;Roth et al, 2019), and anthropological and socioeconomic factors (Collignon et al, 2018).…”

Section: Discussionsupporting

confidence: 91%

Fluoroquinolones Resistance Pattern of Escherichia coli from Apparently Healthy Broiler Chickens in Egypt

Hussein¹,

Fahmy²,

Tawab³

2021

AAVS

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A ntimicrobial resistance poses a serious threat to human and animal health worldwide (Berendonk et al., 2015). The growing emergence of resistance in pathogenic bacteria constitutes a direct threat to humans and animals. However, there is mounting evidence that commensal and environmental bacteria are reservoirs of resistance determinants that can be transferred to pathogenic bacteria ( Juricova et al., 2021). Commensal Escherichia coli (E. coli), in particular, is widely recognized as an indicator for tracking antimicrobial resistance in monitoring programs, and serves as a model for studying the emergence of antimicrobial resistance in animals, for a wide range of bacteria research Article Abstract | Antimicrobial resistance in Escherichia coli is increasingly becoming a matter of serious concern in veterinary and human health sectors worldwide. The objective of this study was to investigate the phenotypic and genotypic characteristics of quinolones and fluoroquinolones resistance in Escherichia coli recovered from apparently healthy broiler chickens in Egypt. A total of 150 cloacal swabs collected from broiler chickens from farms and bird markets were subjected to bacteriological and biochemical examination. The results revealed that 92% (138/150) of samples were found positive for E. coli. The antimicrobial susceptibility testing of 72 confirmed E. coli isolates against seven quinolones and fluoroquinolones antibiotics revealed that 62 (86.1%) were resistant to at least one antibiotic, with highest resistance rates observed against first generation (86.1% for nalidixic acid, and 81.9% for flumequine), and lowest rate against levofloxacin (33.3%). A total of 24 isolates, dsplaying high resistance to at least 5 fluroquinolone antibiotics, were then screened for plasmid-mediated quinolone resistance (PMQR) genes qnrA, qnrB, qnrS, qepA and aac(6′)-Ib-cr by PCR. The results revealed that 22 isolates (91.7%) harboured at least one PMQR gene, with qnrS being the most frequent (83.3%). The qepA, qnrB and aa (6′)-Ib-cr genes occurrence was 54.2%, 16.7% and 4.2% respectively, while qnrA was not detected in any isolate. The high prevalence of fluoroquinolones resistance, and transferable fluoroquinolones resistance determinants in E. coli from apparently healthy broilers in this study could pose a serious public health hazard, which highlights the need for effective monitoring and surveillance programs and cooperation between the sectors related to the epidemiology of these determinants.

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Section: Discussionsupporting

confidence: 91%

Fluoroquinolones Resistance Pattern of Escherichia coli from Apparently Healthy Broiler Chickens in Egypt

Hussein¹,

Fahmy²,

Tawab³

2021

AAVS

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“…The results revealed that multidrug resistance was observed in all Salmonella isolates against four antibiotics or more and in all E. coli isolates against three antibiotics or more (except in O44). This high prevalence of multidrug resistance in Salmonella and E. coli has been previously reported in Egypt (Amer et al, 2018), Bangladesh (Matin et al, 2017), Pakistan (Kamboh et al, 2018), western Algeria (Yahya et al, 2021) and in Côte d'Ivoire (Assoumy et al, 2021).…”

Section: Discussionsupporting

confidence: 68%

Influence of Hygienic Measures on Enterobacteriaceae Prevalence and Antimicrobial Resistance in Poultry Farms

Aidaros¹,

Khalafallah²,

Diab³

et al. 2022

AAVS

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“…The ovicidal toxicity of GC16 to T. pueraricola eggs was assessed by the petri dish-spraying method according to a previous study with some modifications [ 33 , 34 , 35 , 36 , 37 ]. In total, 15 adult females were placed on a 20 mm diameter bean leaf disc placed on 0.3% agar in a petri dish for egg deposition.…”

Section: Methodsmentioning

confidence: 99%

The Insecticidal Efficacy and Physiological Action Mechanism of a Novel Agent GC16 against Tetranychus pueraricola (Acari: Tetranychidae)

Xie

et al. 2022

Insects

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Chemical control plays a crucial role in pest management but has to face challenges due to insect resistance. It is important to discover alternatives to traditional pesticides. The spider mite Tetranychus pueraricola (Ehara & Gotoh) (Acari: Tetranychidae) is a major agricultural pest that causes severe damage to many crops. GC16 is a new agent that consists of a mixture of Calcium chloride (CaCl2) and lecithin. To explore the acaricidal effects and mode of action of GC16 against T. pueraricola, bioassays, cryogenic scanning electron microscopy (cryo-SEM) and transmission electron microscopy (TEM) were performed. GC16 had lethal effects on the eggs, larvae, nymphs, and adults of T. pueraricola, caused the mites to dehydrate and inactivate, and inhibited the development of eggs. GC16 displayed contact toxicity rather than stomach toxicity through the synergistic effects of CaCl2 with lecithin. Cryo-SEM analysis revealed that GC16 damaged T. pueraricola by disordering the array of the cuticle layer crest. Mitochondrial abnormalities were detected by TEM in mites treated by GC16. Overall, GC16 had the controlling efficacy on T. pueraricola by cuticle penetration and mitochondria dysfunction and had no effects on Picromerus lewisi and Harmonia axyridis, indicating that GC16 is likely a new eco-friendly acaricide.

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Effect of Combined Plant Essential Oils on Dermanyssus gallinae: In vitro and in vivo study

Cited by 4 publications

References 0 publications

Fluoroquinolones Resistance Pattern of Escherichia coli from Apparently Healthy Broiler Chickens in Egypt

Fluoroquinolones Resistance Pattern of Escherichia coli from Apparently Healthy Broiler Chickens in Egypt

Influence of Hygienic Measures on Enterobacteriaceae Prevalence and Antimicrobial Resistance in Poultry Farms

The Insecticidal Efficacy and Physiological Action Mechanism of a Novel Agent GC16 against Tetranychus pueraricola (Acari: Tetranychidae)

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