659 research outputs found

    Whole-genome sequencing analysis of quorumsensing Aeromonas hydrophila strain M023 from freshwater

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    YesAeromonas hydrophila is a well-known waterborne pathogen that recently was found to infect humans. Here, we report the draft genome of a freshwater isolate from a Malaysian waterfall, A. hydrophila strain M023, which portrays N-acylhomoserine lactone-dependent quorum sensing.University of Malaya via High Impact Research Grants (UM C/625/1/HIR/MOHE/CHAN/01, A-000001-50001, and UM C/625/1/HIR/MOHE/CHAN/14/1, H-50001-A000027

    Understanding the quorum-sensing bacterium Pantoea stewartii strain M009 with whole-genome sequencing analysis

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    YesPantoea stewartii is known to be the causative agent of Stewart's wilt, which usually affects sweet corn (Zea mays) with the corn flea beetle as the transmission vector. In this work, we present the whole-genome sequence of Pantoea stewartii strain M009, isolated from a Malaysian tropical rainforest waterfall.University of Malaya via High Impact Research Grants (UM C/625/1/HIR/MOHE/CHAN/01 no. A-000001- 50001 and UM C/625/1/HIR/MOHE/CHAN/14/1 no. H-50001-A000027

    Draft genome sequence of a quorum-sensing bacterium, Dickeya sp. strain 2B12, isolated from a freshwater lake

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    YesDickeya sp. strain 2B12 was isolated from a freshwater lake in Malaysia. Here, we report the draft genome sequence of Dickeya sp. 2B12 sequenced by the Illumina MiSeq platform. With the genome sequence available, this genome sequence will be useful for the study of quorum-sensing activity in this isolate.University of Malaya High-Impact Research( HIR)grants(UMC/625/1/HIR/MOHE/CHAN/01[no.A-000001- 50001] and UM-MOHE HIR UM C/625/1/HIR/MOHE/CHAN/14/1 [no. H-50001-A000027]

    Analysis of pectate lyase genes in Dickeya chrysanthemi strain L11, isolated from a recreational lake in Malyasia: a draft genome sequence perspective

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    YesDickeya chrysanthemi is well known as a plant pathogen that caused major blackleg in the European potato industry in the 1990s. D. chrysanthemi strain L11 was discovered in a recreational lake in Malaysia. Here, we present its draft genome sequence.University of Malaya High Impact Research (HIR) Grants UM C/625/1/HIR/MOHE/CHAN/01 (grant no. A-000001-50001) and UM C/625/1/HIR/MOHE/CHAN/14/1 (grant no. H-50001-A000027

    Genome sequence analysis reveals evidence of quorum-sensing genes present in Aeromonas hydrophila strain M062, isolated from freshwater

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    YesAeromonas hydrophila has emerged worldwide as a human pathogen. Here, we report the draft whole-genome sequence of a freshwater isolate from Malaysia, A. hydrophila strain M062, and its N-acylhomoserine lactone genes are also reported here.University of Malaya via High-Impact Research Grants (UM C/625/1/HIR/MOHE/CHAN/01, no. A-000001- 50001), and aUM-MOHEHIR grant (UM C/625/1/HIR/MOHE/CHAN/ 14/1, no. H-50001-A000027

    Analysis of quorum-sensing Pantoea stewartii strain M073a through whole-genome sequencing

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    YesPantoea stewartii strain M073a is a Gram-negative bacterium isolated from a tropical waterfall. This strain exhibits quorum-sensing activity. Here, the assembly and annotation of its genome are presented.High Impact Research Grants from the University of Malaya (UM.C/625/1/HIR/MOHE/CHAN/01, grant no. A-000001-50001 and UM-MOHE HIR Grant UM.C/625/1/HIR/MOHE/ CHAN/14/1, no. H-50001-A000027

    Perforated Sigmoid Colon Cancer within an Irreducible Inguinal Hernia: a Case Report

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    A perforated sigmoid colon cancer within an inguinal hernia is extremely rare. This unexpected finding is usually discovered during surgery and causes an unavoidable septic evolution. Here, we describe the case of an 84-year-old man who presented with fever, abdominal distension, and a painful, enlarged, left scrotum. A CT showed a left, incarcerated, inguinal hernia containing a perforated sigmoid adenocarcinoma (which was confirmed by histopathology). The possibility of an irreducible inguinal hernia in association with perforated sigmoid colon cancer should be considered in the array of diagnoses. A pre-operative CT scan would be helpful in facilitating an accurate diagnosis

    4β-Hydroxywithanolide E from Physalis peruviana (golden berry) inhibits growth of human lung cancer cells through DNA damage, apoptosis and G2/M arrest

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    <p>Abstract</p> <p>Background</p> <p>The crude extract of the fruit bearing plant, <it>Physalis peruviana </it>(golden berry), demonstrated anti-hepatoma and anti-inflammatory activities. However, the cellular mechanism involved in this process is still unknown.</p> <p>Methods</p> <p>Herein, we isolated the main pure compound, 4β-Hydroxywithanolide (4βHWE) derived from golden berries, and investigated its antiproliferative effect on a human lung cancer cell line (H1299) using survival, cell cycle, and apoptosis analyses. An alkaline comet-nuclear extract (NE) assay was used to evaluate the DNA damage due to the drug.</p> <p>Results</p> <p>It was shown that DNA damage was significantly induced by 1, 5, and 10 μg/mL 4βHWE for 2 h in a dose-dependent manner (<it>p </it>< 0.005). A trypan blue exclusion assay showed that the proliferation of cells was inhibited by 4βHWE in both dose- and time-dependent manners (<it>p </it>< 0.05 and 0.001 for 24 and 48 h, respectively). The half maximal inhibitory concentrations (IC<sub>50</sub>) of 4βHWE in H1299 cells for 24 and 48 h were 0.6 and 0.71 μg/mL, respectively, suggesting it could be a potential therapeutic agent against lung cancer. In a flow cytometric analysis, 4βHWE produced cell cycle perturbation in the form of sub-G<sub>1 </sub>accumulation and slight arrest at the G<sub>2</sub>/M phase with 1 μg/mL for 12 and 24 h, respectively. Using flow cytometric and annexin V/propidium iodide immunofluorescence double-staining techniques, these phenomena were proven to be apoptosis and complete G<sub>2</sub>/M arrest for H1299 cells treated with 5 μg/mL for 24 h.</p> <p>Conclusions</p> <p>In this study, we demonstrated that golden berry-derived 4βHWE is a potential DNA-damaging and chemotherapeutic agent against lung cancer.</p

    The ENCODE Imputation Challenge: a critical assessment of methods for cross-cell type imputation of epigenomic profiles

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    A promising alternative to comprehensively performing genomics experiments is to, instead, perform a subset of experiments and use computational methods to impute the remainder. However, identifying the best imputation methods and what measures meaningfully evaluate performance are open questions. We address these questions by comprehensively analyzing 23 methods from the ENCODE Imputation Challenge. We find that imputation evaluations are challenging and confounded by distributional shifts from differences in data collection and processing over time, the amount of available data, and redundancy among performance measures. Our analyses suggest simple steps for overcoming these issues and promising directions for more robust research
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