19 research outputs found

    An Oil Spill Spatial Data Model for Qinzhou Bay Based on the KML

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    Qinzhou Bay is an important channel of Chinese southwest goes to sea. The Qinzhou Bay was chosen as the study area in this paper. Using the international advanced model Oilmap, Analysis of oil spill on the initial oil membrane formation factors, exclude some of initial oil film effects are not important factors, Find suitable for oil spill earlier an oil spill force model. Combined with the natural condition of Qinzhou Bay, The transport process of oil membrane in the condition of different wind and current was observed in Qinzhou Bay by means of experiments. This paper analyzes the main factors, such as the shape of oil membrane and migration directions, which leads to the oil spill, and got a suitable model of oil spill to Qinzhou Bay. In order to achieve its visual in the software of geographic information system, the model of oil spill was defined through the KML

    Open-source genomic analysis of Shiga-toxin–producing E. coli O104:H4

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    An outbreak caused by Shiga-toxin–producing Escherichia coli O104:H4 occurred in Germany in May and June of 2011, with more than 3000 persons infected. Here, we report a cluster of cases associated with a single family and describe an open-source genomic analysis of an isolate from one member of the family. This analysis involved the use of rapid, bench-top DNA sequencing technology, open-source data release, and prompt crowd-sourced analyses. In less than a week, these studies revealed that the outbreak strain belonged to an enteroaggregative E. coli lineage that had acquired genes for Shiga toxin 2 and for antibiotic resistance

    Tilapia (Oreochromis niloticus) oligopeptide TBP-1 inhibits hepatocellular carcinoma metastasis by suppressing inflammation and epithelial-mesenchymal transition

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    Hepatocellular carcinoma (HCC) is one of the deadliest forms of cancer, but the drugs currently used for its treatment are less than ideal. Tilapia oligopeptides have a wide range of biological activities and are potential sources of new drugs. In this study, the role and mechanism of TBP-1 (Ser-Val-Val-Ala-Ile), an oligopeptide from tilapia, on inflammation and endothelial-mesenchymal transition (EMT) in HCC was investigated using the LPS-induced RAW264.7 inflammation model and the transforming growth factor (TGF)-β1-induced HCC EMT model. The results showed that TBP-1 could effectively inhibit inflammatory response. Moreover, in TGF-β1-induced human hepatocellular carcinoma (HepG2) cells, 100 μM TBP-1 significantly reduced the secretion of N-cadherin (54.2 ± 10.6 %), Vimentin (47.0 ± 9.4 %) and Snail (76.0 ± 9.0 %), increased the secretion of E-cadherin (56.0 ± 16.3 %), inhibited cell metastasis, and participated in the regulatory mechanisms of TGF-β/Smad and non-TGF-β/Smad mediated EMT. TBP-1 may be a potentially valuable inhibitor of HCC

    Effect of alpha1-blockers on stentless ureteroscopic lithotripsy

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    ABSTRACT Objective To evaluate the clinical efficiency of alpha1-adrenergic antagonists on stentless ureteroscopic lithotripsy treating uncomplicated lower ureteral stones. Materials and Methods From January 2007 to January 2013, 84 patients who have uncomplicated lower ureteral stones treated by ureteroscopic intracorporeal lithotripsy with the holmium laser were analyzed. The patients were divided into two groups, group A (44 patients received indwelled double-J stents) and group B (40 patients were treated by alpha1-adrenergic antagonists without stents). All cases of group B were treated with alpha1 blocker for 1 week. Results The mean operative time of group A was significantly longer than group B. The incidences of hematuria, flank/abdominal pain, frequency/urgency after surgery were statistically different between both groups. The stone-free rate of each group was 100%. Conclusions The effect of alpha1-adrenergic antagonists is more significant than indwelling stent after ureteroscopic lithotripsy in treating uncomplicated lower ureteral stones

    Purple Sweet Potato Color Ameliorates Cognition Deficits and Attenuates Oxidative Damage and Inflammation in Aging Mouse Brain Induced by D-Galactose

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    Purple sweet potato color (PSPC), a naturally occurring anthocyanin, has a powerful antioxidant activity in vitro and in vivo. This study explores whether PSPC has the neuroprotective effect on the aging mouse brain induced by D-galactose (D-gal). The mice administrated with PSPC (100 mg/kg.day, 4 weeks, from 9th week) via oral gavage showed significantly improved behavior performance in the open field and passive avoidance test compared with D-gal-treated mice (500 mg/kg.day, 8 weeks). We further investigate the mechanism involved in neuroprotective effects of PSPC on mouse brain. Interestingly, we found, PSPC decreased the expression level of glial fibrillary acidic protein (GFAP), inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2), inhibited nuclear translocation of nuclear factor-kappaB (NF-κB), increased the activity of copper/zinc superoxide dismutase (Cu/Zn-SOD) and catalase (CAT), and reduced the content of malondialdehyde (MDA), respectively. Our data suggested that PSPC attenuated D-gal-induced cognitive impairment partly via enhancing the antioxidant and anti-inflammatory capacity
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