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  • 1
    In: Laryngoscope Investigative Otolaryngology, Wiley, Vol. 7, No. 6 ( 2022-12), p. 1780-1789
    Abstract: An increased incidence of acute invasive fungal sinusitis associated with the recent COVID‐19 pandemic has been observed, which is considered a public health concern. This study aims to detect the incidence, risk factors, causative agents, clinical presentations, outcomes, and susceptibility rate of various antifungals. Methods In this cross‐sectional cohort study, a total of 30 patients showing acute invasive fungal rhinosinusitis following a COVID‐19 infection were investigated. Histopathological biopsies, culture identification, and molecular confirmation of the causative agents were conducted. The demographic data, risk factors, clinical presentations, treatment regimen and its outcomes, and efficacy of antifungals were listed and analyzed. Results A total of 30 cases with a mean age of 59.6 ± 11.9 years were included. Diabetes mellitus was the most recorded comorbidity with a rate of 86.7%, whereas most of the patients received corticosteroids. The mycological examination confirmed the existence of Mucor ( Rhizopus oryzae ) and Aspergillus ( Aspergillus niger ) in 96.7% and 3.3% of the cases, respectively. Various stages of sinonasal involvement (ethmoid, maxillary, sphenoid, and inferior turbinate) represented 100%, 83.3%, 66.7%, and 86.7% of the cases, respectively. Headache and facial pain, ophthalmoplegia, visual loss, and blindness represented 100%, 66.7%, 90%, and 53.3% of the cases, respectively. All the cases were simultaneously treated with surgical debridement and amphotericin B. Moreover, R . oryzae was susceptible to it, whereas A . niger was sensitive to voriconazole, resulting in a survival rate of 86.7% (26/30). The R . oryzae and A . niger isolates were proven to be sensitive to acetic acid, ethyl alcohol, formalin, and isopropyl alcohol. Conclusions In patients with COVID‐19, the diagnosis of acute invasive fungal sinusitis and prompt treatment with antifungal medicine and surgical debridement are important in achieving better outcomes and survival rates. Level of Evidence 4
    Type of Medium: Online Resource
    ISSN: 2378-8038 , 2378-8038
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2851702-7
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  • 2
    In: Antibiotics, MDPI AG, Vol. 10, No. 5 ( 2021-04-22), p. 480-
    Abstract: Pasteurella multocida is a Gram-negative bacterium that causes drastic infections in cattle and humans. In this study, 55 isolates were recovered from 115 nasal swabs from apparently healthy and diseased cattle and humans in Minufiya and Qalyubia, Egypt. These isolates were confirmed by kmt1 existence, and molecular classification of the capsular types showed that types B, D, and E represented 23/55 (41.8%), 21/55 (38.1%), and 11/55 (20.0%), respectively. The isolates were screened for five virulence genes with hgbA, hgbB, and ptfA detected in 28/55 (50.9%), 30/55 (54.5%), and 25/55 (45.5%), respectively. We detected 17 capsular and virulence gene combinations with a discriminatory power (DI) of 0.9286; the most prevalent profiles were dcbF type D and dcbF type D, hgbA, hgbB, and ptfA, which represented 8/55 (14.5%) each. These strains exhibited high ranges of multiple antimicrobial resistance indices; the lowest resistances were against chloramphenicol, ciprofloxacin, amoxicillin/clavulanic acid, and levofloxacin. The macrolide–lincosamide–streptogramin B methylase gene erm(Q), with erm(42) encoding MLSB monomethyltransferase, mph(E) encoding a macrolide efflux pump, and msr(E) encoding macrolide-inactivating phosphotransferase were present. The class 1 and 2 integrons and extended-spectrum β-lactamase genes intl1, intl2, blaCTX-M, blaCTX-M-1, and blaTEM were detected. It is obvious to state that co-occurrence of resistance genes resulted in multiple drug-resistant phenotypes. The identified isolates were virulent, genetically diverse, and resistant to antimicrobials, highlighting the potential risk to livestock and humans.
    Type of Medium: Online Resource
    ISSN: 2079-6382
    Language: English
    Publisher: MDPI AG
    Publication Date: 2021
    detail.hit.zdb_id: 2681345-2
    SSG: 15,3
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  • 3
    In: BMC Microbiology, Springer Science and Business Media LLC, Vol. 21, No. 1 ( 2021-12)
    Abstract: The Shiga toxin-producing Escherichia coli (STEC) represented a great risk to public health. In this study, 60 STEC strains recovered from broiler and duck fecal samples, cow’s milk, cattle beef, human urine, and ear discharge were screened for 12 virulence genes, phenotypic and genotypic antimicrobial resistance, and multiple-locus variable-number tandem-repeat analysis (MLVA). Results The majority of strains harbored Shiga toxin 1 ( stx 1 ) and stx 1d , stx 2 and stx 2e , and ehx A genes, while a minority harbored stx 2c subtype and eae A. We identified 10 stx gene combinations; most of strains 31/60 (51.7%) exhibited four copies of stx genes, namely the stx 1 , stx 1d , stx 2 , and stx 2e , and the strains exhibited a high range of multiple antimicrobial resistance indices. The resistance genes bla CTX-M-1 and bla TEM were detected. For the oxytetracycline resistance genes, most of strains contained tet A, tet B, tet E, and tet G while the tet C was present at low frequency. MLVA genotyping resolved 26 unique genotypes; genotype 21 was highly prevalent. The six highly discriminatory loci DI = 0.9138 are suitable for the preliminary genotyping of STEC from animals and humans. Conclusions The STEC isolated from animals are virulent, resistant to antimicrobials, and genetically diverse, thus demands greater attention for the potential risk to human.
    Type of Medium: Online Resource
    ISSN: 1471-2180
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2021
    detail.hit.zdb_id: 2041505-9
    SSG: 12
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