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Summary Growth response to griseofulvin has been studied in 24 strains of 16 species of geophilic dermatophytes and related keratinophilic fungi. Based on their sensitivity to griseofulvin these fungi fall into three groups: (1) Resistant group includesKeratinomyces ajelloi, Trichophyton terrestre andTrichophyton evolceanui which can grow upto 40µg per ml concentration of griseofulvin. (2) Fairly resistant group comprisingMicrosporon cookei, Microsporon vanbreuseghemii, a strain ofMicrosporon gypseum andTrichophyton sp., with growth occurring upto 8–16µg per ml concentration. (3) Sensitive group includes species ofTrichophyton, Keratinophyton, Microsporon, Nannizzia, Chrysosporium andCtenomyces which are completely inhibited at 4–8µg or lower griseofulvin concentrations. Griseofulvin inhibited formation of cleistothecia inK. terreum, delayed pleomorphic growth inT. indicum andN. incurvata, and influenced pigment production in several strains. 相似文献
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S. Randhawa M. M. Brashears K. W. McMahon M. Fokar E. Karunasena 《Probiotics and antimicrobial proteins》2010,2(4):274-283
The species level identity of Lactobacillus NP51, a commercial direct-fed microbial previously identified as Lactobacillus acidophilus NP51, was re-evaluated to determine whether new technologies resulted in changes in the original identification. The phenotypic methods for species identification included API 50 CHL kit and two automated systems, Vitek 2 and MIDI (FAME analysis; a total of three independent FAME analyses). Discrepancies among the identification results with all methods of phenotypic analysis were reported. MicroSeqID 500 16S rRNA system (SeqWright Inc., Houston, TX), a genotypic method, identified the organism as Lactobacillus animalis. Cloning, sequencing and subsequent sequence comparison of NP51 16S–23S intergenic spacer region (ISRs) to nucleotide sequence databases using the BLAST search tool indicated that NP51 can now be named L. animalis. When NP51 was originally identified as L. acidophilus, the designation of L. animalis did not exist taxonomically. The NP51 sequence comparisons using BLAST also revealed that NP51 and a strain previously identified as L. animalis LA51 HOFG1 by Flint and Angert are identical strains under different names. A strain-specific primer pair was also identified for HOFG1 by the same research group. A primer pair (using HOFG1 forward pair) also produced an amplicon unique to NP51. These methods demonstrate the significance of genetic-based detection methods both for scientific identification of organisms from biological samples and to prevent misidentification in food and health industry related microorganisms in which proprietary considerations are an important concern. 相似文献
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Robert Mason Helen C. Dearden Bella Nguyen Jennifer A. Soon Jessica Louise Smith Manreet Randhawa Andrew Mant Lydai Warburton Serigne Lo Tarek Meniawy Alexander Guminski Phillip Parente Sayed Ali Andrew Haydon Georgina V. Long Matteo S. Carlino Michael Millward Victoria G. Atkinson Alexander M. Menzies 《Pigment cell & melanoma research》2020,33(2):358-365
The combination of ipilimumab and nivolumab is a highly active systemic therapy for metastatic melanoma but can cause significant toxicity. We explore the safety and efficacy of this treatment in routine clinical practice, particularly in the setting of serine/threonine‐protein kinase B‐Raf (BRAF)‐targeted therapy. Consecutive patients with unresectable stage IIIC/IV melanoma commenced on ipilimumab and nivolumab across 10 tertiary melanoma institutions in Australia were identified retrospectively. Data collected included demographics, response and survival outcomes. A total of 152 patients were included for analysis, 39% were treatment‐naïve and 22% failed first‐line BRAF/MEK inhibitors. Treatment‐related adverse events occurred in 67% of patients, grade 3–5 in 38%. The overall objective response rate was 41%, 57% in treatment‐naïve and 21% in BRAF/MEK failure patients. Median progression‐free survival was 4.0 months (95% CI, 3.0–6.0) in the whole cohort, 11.0 months (95% CI, 6.0‐NR) in treatment‐naïve and 2.0 months (95% CI, 1.4–4.6) in BRAF/MEK failure patients. The combination of ipilimumab and nivolumab can be used safely and effectively in a real‐world population. While first‐line efficacy appears comparable to trial populations, BRAF‐mutant patients failing prior BRAF/MEK inhibitors show less response. 相似文献
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Shivalika Pathania Vinay Randhawa 《Journal of biomolecular structure & dynamics》2020,38(17):5108-5125
AbstractNipah Virus (NiV) is a newly emergent paramyxovirus that has caused various outbreaks in Asian countries. Despite its acute pathogenicity and lack of approved therapeutics for human use, there is an urgent need to determine inhibitors against NiV. Hence, this work includes prospection of potential entry inhibitors by implementing an integrative structure- and network-based drug discovery approach. FDA-approved drugs were screened against attachment glycoprotein (NiV-G, PDB: 2VSM), one of the prime targets to inhibit viral entry, using a molecular docking approach that was benchmarked both on CCDC/ASTEX and known NIV-G inhibitor set. The predicted small molecules were prioritized on the basis of topological analysis of the chemical-protein interaction network, which was inferred by integrating the drug-target network, NiV-human interaction network, and human protein-protein interaction network. A total of 17 drugs were predicted to be NiV-G inhibitors using molecular docking studies that were further prioritized to 3 novel leads???Nilotinib, Deslanoside and Acetyldigitoxin???on the basis of topological analysis of inferred chemical-protein interaction network. While Deslanoside and Acetyldigitoxin belong to an already known class of anti-NiV inhibitors, Nilotinib belongs to Benzenoids chemical class that has not been reported hitherto for developing anti-NiV inhibitors. These identified drugs are expected to be successful in further experimental evaluation and therefore could be used for anti-Nipah drug discovery. Apart, we also obtained various insights into the underlying chemical-protein interaction network, based on which several important network nodes were predicted. The applicability of our proposed approach was also demonstrated by prospecting for anti-NiV phytochemicals on an independent dataset.Communicated by Ramaswamy H. Sarma 相似文献